diff options
288 files changed, 8298 insertions, 1868 deletions
diff --git a/Documentation/DocBook/media/v4l/compat.xml b/Documentation/DocBook/media/v4l/compat.xml index 07ffc76553ba..0a2debfa68f6 100644 --- a/Documentation/DocBook/media/v4l/compat.xml +++ b/Documentation/DocBook/media/v4l/compat.xml @@ -2566,6 +2566,10 @@ fields changed from _s32 to _u32. <para>Added compound control types and &VIDIOC-QUERY-EXT-CTRL;. </para> </listitem> + </orderedlist> + </section> + + <section> <title>V4L2 in Linux 3.18</title> <orderedlist> <listitem> diff --git a/Documentation/arm64/memory.txt b/Documentation/arm64/memory.txt index 344e85cc7323..d7273a5f6456 100644 --- a/Documentation/arm64/memory.txt +++ b/Documentation/arm64/memory.txt @@ -17,7 +17,7 @@ User addresses have bits 63:48 set to 0 while the kernel addresses have the same bits set to 1. TTBRx selection is given by bit 63 of the virtual address. The swapper_pg_dir contains only kernel (global) mappings while the user pgd contains only user (non-global) mappings. -The swapper_pgd_dir address is written to TTBR1 and never written to +The swapper_pg_dir address is written to TTBR1 and never written to TTBR0. diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.txt b/Documentation/devicetree/bindings/thermal/imx-thermal.txt index 1f0f67234a91..3c67bd50aa10 100644 --- a/Documentation/devicetree/bindings/thermal/imx-thermal.txt +++ b/Documentation/devicetree/bindings/thermal/imx-thermal.txt @@ -1,7 +1,10 @@ * Temperature Monitor (TEMPMON) on Freescale i.MX SoCs Required properties: -- compatible : "fsl,imx6q-thermal" +- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for i.MX6SX. + i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC, + when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature + is higher than panic threshold, system will auto reboot by SRC module. - fsl,tempmon : phandle pointer to system controller that contains TEMPMON control registers, e.g. ANATOP on imx6q. - fsl,tempmon-data : phandle pointer to fuse controller that contains TEMPMON diff --git a/Documentation/filesystems/Locking b/Documentation/filesystems/Locking index 94d93b1f8b53..b30753cbf431 100644 --- a/Documentation/filesystems/Locking +++ b/Documentation/filesystems/Locking @@ -67,6 +67,7 @@ prototypes: struct file *, unsigned open_flag, umode_t create_mode, int *opened); int (*tmpfile) (struct inode *, struct dentry *, umode_t); + int (*dentry_open)(struct dentry *, struct file *, const struct cred *); locking rules: all may block @@ -96,6 +97,7 @@ fiemap: no update_time: no atomic_open: yes tmpfile: no +dentry_open: no Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on victim. diff --git a/Documentation/filesystems/overlayfs.txt b/Documentation/filesystems/overlayfs.txt new file mode 100644 index 000000000000..530850a72735 --- /dev/null +++ b/Documentation/filesystems/overlayfs.txt @@ -0,0 +1,198 @@ +Written by: Neil Brown <neilb@suse.de> + +Overlay Filesystem +================== + +This document describes a prototype for a new approach to providing +overlay-filesystem functionality in Linux (sometimes referred to as +union-filesystems). An overlay-filesystem tries to present a +filesystem which is the result over overlaying one filesystem on top +of the other. + +The result will inevitably fail to look exactly like a normal +filesystem for various technical reasons. The expectation is that +many use cases will be able to ignore these differences. + +This approach is 'hybrid' because the objects that appear in the +filesystem do not all appear to belong to that filesystem. In many +cases an object accessed in the union will be indistinguishable +from accessing the corresponding object from the original filesystem. +This is most obvious from the 'st_dev' field returned by stat(2). + +While directories will report an st_dev from the overlay-filesystem, +all non-directory objects will report an st_dev from the lower or +upper filesystem that is providing the object. Similarly st_ino will +only be unique when combined with st_dev, and both of these can change +over the lifetime of a non-directory object. Many applications and +tools ignore these values and will not be affected. + +Upper and Lower +--------------- + +An overlay filesystem combines two filesystems - an 'upper' filesystem +and a 'lower' filesystem. When a name exists in both filesystems, the +object in the 'upper' filesystem is visible while the object in the +'lower' filesystem is either hidden or, in the case of directories, +merged with the 'upper' object. + +It would be more correct to refer to an upper and lower 'directory +tree' rather than 'filesystem' as it is quite possible for both +directory trees to be in the same filesystem and there is no +requirement that the root of a filesystem be given for either upper or +lower. + +The lower filesystem can be any filesystem supported by Linux and does +not need to be writable. The lower filesystem can even be another +overlayfs. The upper filesystem will normally be writable and if it +is it must support the creation of trusted.* extended attributes, and +must provide valid d_type in readdir responses, so NFS is not suitable. + +A read-only overlay of two read-only filesystems may use any +filesystem type. + +Directories +----------- + +Overlaying mainly involves directories. If a given name appears in both +upper and lower filesystems and refers to a non-directory in either, +then the lower object is hidden - the name refers only to the upper +object. + +Where both upper and lower objects are directories, a merged directory +is formed. + +At mount time, the two directories given as mount options "lowerdir" and +"upperdir" are combined into a merged directory: + + mount -t overlayfs overlayfs -olowerdir=/lower,upperdir=/upper,\ +workdir=/work /merged + +The "workdir" needs to be an empty directory on the same filesystem +as upperdir. + +Then whenever a lookup is requested in such a merged directory, the +lookup is performed in each actual directory and the combined result +is cached in the dentry belonging to the overlay filesystem. If both +actual lookups find directories, both are stored and a merged +directory is created, otherwise only one is stored: the upper if it +exists, else the lower. + +Only the lists of names from directories are merged. Other content +such as metadata and extended attributes are reported for the upper +directory only. These attributes of the lower directory are hidden. + +whiteouts and opaque directories +-------------------------------- + +In order to support rm and rmdir without changing the lower +filesystem, an overlay filesystem needs to record in the upper filesystem +that files have been removed. This is done using whiteouts and opaque +directories (non-directories are always opaque). + +A whiteout is created as a character device with 0/0 device number. +When a whiteout is found in the upper level of a merged directory, any +matching name in the lower level is ignored, and the whiteout itself +is also hidden. + +A directory is made opaque by setting the xattr "trusted.overlay.opaque" +to "y". Where the upper filesystem contains an opaque directory, any +directory in the lower filesystem with the same name is ignored. + +readdir +------- + +When a 'readdir' request is made on a merged directory, the upper and +lower directories are each read and the name lists merged in the +obvious way (upper is read first, then lower - entries that already +exist are not re-added). This merged name list is cached in the +'struct file' and so remains as long as the file is kept open. If the +directory is opened and read by two processes at the same time, they +will each have separate caches. A seekdir to the start of the +directory (offset 0) followed by a readdir will cause the cache to be +discarded and rebuilt. + +This means that changes to the merged directory do not appear while a +directory is being read. This is unlikely to be noticed by many +programs. + +seek offsets are assigned sequentially when the directories are read. +Thus if + - read part of a directory + - remember an offset, and close the directory + - re-open the directory some time later + - seek to the remembered offset + +there may be little correlation between the old and new locations in +the list of filenames, particularly if anything has changed in the +directory. + +Readdir on directories that are not merged is simply handled by the +underlying directory (upper or lower). + + +Non-directories +--------------- + +Objects that are not directories (files, symlinks, device-special +files etc.) are presented either from the upper or lower filesystem as +appropriate. When a file in the lower filesystem is accessed in a way +the requires write-access, such as opening for write access, changing +some metadata etc., the file is first copied from the lower filesystem +to the upper filesystem (copy_up). Note that creating a hard-link +also requires copy_up, though of course creation of a symlink does +not. + +The copy_up may turn out to be unnecessary, for example if the file is +opened for read-write but the data is not modified. + +The copy_up process first makes sure that the containing directory +exists in the upper filesystem - creating it and any parents as +necessary. It then creates the object with the same metadata (owner, +mode, mtime, symlink-target etc.) and then if the object is a file, the +data is copied from the lower to the upper filesystem. Finally any +extended attributes are copied up. + +Once the copy_up is complete, the overlay filesystem simply +provides direct access to the newly created file in the upper +filesystem - future operations on the file are barely noticed by the +overlay filesystem (though an operation on the name of the file such as +rename or unlink will of course be noticed and handled). + + +Non-standard behavior +--------------------- + +The copy_up operation essentially creates a new, identical file and +moves it over to the old name. The new file may be on a different +filesystem, so both st_dev and st_ino of the file may change. + +Any open files referring to this inode will access the old data and +metadata. Similarly any file locks obtained before copy_up will not +apply to the copied up file. + +On a file opened with O_RDONLY fchmod(2), fchown(2), futimesat(2) and +fsetxattr(2) will fail with EROFS. + +If a file with multiple hard links is copied up, then this will +"break" the link. Changes will not be propagated to other names +referring to the same inode. + +Symlinks in /proc/PID/ and /proc/PID/fd which point to a non-directory +object in overlayfs will not contain valid absolute paths, only +relative paths leading up to the filesystem's root. This will be +fixed in the future. + +Some operations are not atomic, for example a crash during copy_up or +rename will leave the filesystem in an inconsistent state. This will +be addressed in the future. + +Changes to underlying filesystems +--------------------------------- + +Offline changes, when the overlay is not mounted, are allowed to either +the upper or the lower trees. + +Changes to the underlying filesystems while part of a mounted overlay +filesystem are not allowed. If the underlying filesystem is changed, +the behavior of the overlay is undefined, though it will not result in +a crash or deadlock. diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index fceff7c00a3c..20bf204426ca 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -364,6 +364,7 @@ struct inode_operations { int (*atomic_open)(struct inode *, struct dentry *, struct file *, unsigned open_flag, umode_t create_mode, int *opened); int (*tmpfile) (struct inode *, struct dentry *, umode_t); + int (*dentry_open)(struct dentry *, struct file *, const struct cred *); }; Again, all methods are called without any locks being held, unless @@ -696,6 +697,12 @@ struct address_space_operations { but instead uses bmap to find out where the blocks in the file are and uses those addresses directly. + dentry_open: *WARNING: probably going away soon, do not use!* This is an + alternative to f_op->open(), the difference is that this method may open + a file not necessarily originating from the same filesystem as the one + i_op->open() was called on. It may be useful for stacking filesystems + which want to allow native I/O directly on underlying files. + invalidatepage: If a page has PagePrivate set, then invalidatepage will be called when part or all of the page is to be removed diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 988160a4ad31..74339c57b914 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1015,10 +1015,14 @@ bytes respectively. Such letter suffixes can also be entirely omitted. Format: {"off" | "on" | "skip[mbr]"} efi= [EFI] - Format: { "old_map" } + Format: { "old_map", "nochunk", "noruntime" } old_map [X86-64]: switch to the old ioremap-based EFI runtime services mapping. 32-bit still uses this one by default. + nochunk: disable reading files in "chunks" in the EFI + boot stub, as chunking can cause problems with some + firmware implementations. + noruntime : disable EFI runtime services support efi_no_storage_paranoia [EFI; X86] Using this parameter you can use more than 50% of @@ -2232,7 +2236,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. nodsp [SH] Disable hardware DSP at boot time. - noefi [X86] Disable EFI runtime services support. + noefi Disable EFI runtime services support. noexec [IA-64] diff --git a/Documentation/power/pm_qos_interface.txt b/Documentation/power/pm_qos_interface.txt index a5da5c7e7128..129f7c0e1483 100644 --- a/Documentation/power/pm_qos_interface.txt +++ b/Documentation/power/pm_qos_interface.txt @@ -5,7 +5,8 @@ performance expectations by drivers, subsystems and user space applications on one of the parameters. Two different PM QoS frameworks are available: -1. PM QoS classes for cpu_dma_latency, network_latency, network_throughput. +1. PM QoS classes for cpu_dma_latency, network_latency, network_throughput, +memory_bandwidth. 2. the per-device PM QoS framework provides the API to manage the per-device latency constraints and PM QoS flags. @@ -13,6 +14,7 @@ Each parameters have defined units: * latency: usec * timeout: usec * throughput: kbs (kilo bit / sec) + * memory bandwidth: mbs (mega bit / sec) 1. PM QoS framework diff --git a/MAINTAINERS b/MAINTAINERS index d333c3e4abeb..1cfabdd1d23f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1749,6 +1749,13 @@ M: Nicolas Ferre <nicolas.ferre@atmel.com> S: Supported F: drivers/spi/spi-atmel.* +ATMEL SSC DRIVER +M: Bo Shen <voice.shen@atmel.com> +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +S: Supported +F: drivers/misc/atmel-ssc.c +F: include/linux/atmel-ssc.h + ATMEL Timer Counter (TC) AND CLOCKSOURCE DRIVERS M: Nicolas Ferre <nicolas.ferre@atmel.com> L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) @@ -6840,6 +6847,13 @@ F: drivers/scsi/osd/ F: include/scsi/osd_* F: fs/exofs/ +OVERLAYFS FILESYSTEM +M: Miklos Szeredi <miklos@szeredi.hu> +L: linux-fsdevel@vger.kernel.org +S: Supported +F: fs/overlayfs/* +F: Documentation/filesystems/overlayfs.txt + P54 WIRELESS DRIVER M: Christian Lamparter <chunkeey@googlemail.com> L: linux-wireless@vger.kernel.org @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 18 SUBLEVEL = 0 -EXTRAVERSION = -rc1 +EXTRAVERSION = -rc2 NAME = Shuffling Zombie Juror # *DOCUMENTATION* diff --git a/arch/arc/kernel/kgdb.c b/arch/arc/kernel/kgdb.c index a2ff5c5d1450..ecf6a7869375 100644 --- a/arch/arc/kernel/kgdb.c +++ b/arch/arc/kernel/kgdb.c @@ -158,11 +158,6 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, return -1; } -unsigned long kgdb_arch_pc(int exception, struct pt_regs *regs) -{ - return instruction_pointer(regs); -} - int kgdb_arch_init(void) { single_step_data.armed = 0; diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi index d68b3c4862bc..51416c7d0625 100644 --- a/arch/arm/boot/dts/at91sam9263.dtsi +++ b/arch/arm/boot/dts/at91sam9263.dtsi @@ -122,9 +122,10 @@ interrupts-extended = <&pmc AT91_PMC_LOCKB>; clocks = <&main>; reg = <1>; - atmel,clk-input-range = <1000000 5000000>; + atmel,clk-input-range = <1000000 32000000>; #atmel,pll-clk-output-range-cells = <4>; - atmel,pll-clk-output-ranges = <70000000 130000000 1 1>; + atmel,pll-clk-output-ranges = <80000000 200000000 0 1>, + <190000000 240000000 2 1>; }; mck: masterck { diff --git a/arch/arm/boot/dts/imx28-evk.dts b/arch/arm/boot/dts/imx28-evk.dts index 09664fcf5afb..0e13b4b10a92 100644 --- a/arch/arm/boot/dts/imx28-evk.dts +++ b/arch/arm/boot/dts/imx28-evk.dts @@ -193,7 +193,6 @@ i2c0: i2c@80058000 { pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins_a>; - clock-frequency = <400000>; status = "okay"; sgtl5000: codec@0a { diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi index 45fce2cf6fed..4472fd92685c 100644 --- a/arch/arm/boot/dts/socfpga.dtsi +++ b/arch/arm/boot/dts/socfpga.dtsi @@ -547,7 +547,7 @@ status = "disabled"; }; - gpio@ff708000 { + gpio0: gpio@ff708000 { #address-cells = <1>; #size-cells = <0>; compatible = "snps,dw-apb-gpio"; @@ -555,7 +555,7 @@ clocks = <&per_base_clk>; status = "disabled"; - gpio0: gpio-controller@0 { + porta: gpio-controller@0 { compatible = "snps,dw-apb-gpio-port"; gpio-controller; #gpio-cells = <2>; @@ -567,7 +567,7 @@ }; }; - gpio@ff709000 { + gpio1: gpio@ff709000 { #address-cells = <1>; #size-cells = <0>; compatible = "snps,dw-apb-gpio"; @@ -575,7 +575,7 @@ clocks = <&per_base_clk>; status = "disabled"; - gpio1: gpio-controller@0 { + portb: gpio-controller@0 { compatible = "snps,dw-apb-gpio-port"; gpio-controller; #gpio-cells = <2>; @@ -587,7 +587,7 @@ }; }; - gpio@ff70a000 { + gpio2: gpio@ff70a000 { #address-cells = <1>; #size-cells = <0>; compatible = "snps,dw-apb-gpio"; @@ -595,7 +595,7 @@ clocks = <&per_base_clk>; status = "disabled"; - gpio2: gpio-controller@0 { + portc: gpio-controller@0 { compatible = "snps,dw-apb-gpio-port"; gpio-controller; #gpio-cells = <2>; diff --git a/arch/arm/boot/dts/socfpga_arria5.dtsi b/arch/arm/boot/dts/socfpga_arria5.dtsi index 03e8268ae219..1907cc600452 100644 --- a/arch/arm/boot/dts/socfpga_arria5.dtsi +++ b/arch/arm/boot/dts/socfpga_arria5.dtsi @@ -29,7 +29,7 @@ }; }; - dwmmc0@ff704000 { + mmc0: dwmmc0@ff704000 { num-slots = <1>; broken-cd; bus-width = <4>; diff --git a/arch/arm/boot/dts/socfpga_arria5_socdk.dts b/arch/arm/boot/dts/socfpga_arria5_socdk.dts index 27d551c384d0..ccaf41742fc3 100644 --- a/arch/arm/boot/dts/socfpga_arria5_socdk.dts +++ b/arch/arm/boot/dts/socfpga_arria5_socdk.dts @@ -37,6 +37,13 @@ */ ethernet0 = &gmac1; }; + + regulator_3_3v: 3-3-v-regulator { + compatible = "regulator-fixed"; + regulator-name = "3.3V"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; }; &gmac1 { @@ -68,6 +75,11 @@ }; }; +&mmc0 { + vmmc-supply = <®ulator_3_3v>; + vqmmc-supply = <®ulator_3_3v>; +}; + &usb1 { status = "okay"; }; diff --git a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts index d7296a5f750c..258865da8f6a 100644 --- a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts +++ b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts @@ -37,6 +37,13 @@ */ ethernet0 = &gmac1; }; + + regulator_3_3v: 3-3-v-regulator { + compatible = "regulator-fixed"; + regulator-name = "3.3V"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; }; &gmac1 { @@ -53,6 +60,10 @@ rxc-skew-ps = <2000>; }; +&gpio1 { + status = "okay"; +}; + &i2c0 { status = "okay"; @@ -69,7 +80,9 @@ }; &mmc0 { - cd-gpios = <&gpio1 18 0>; + cd-gpios = <&portb 18 0>; + vmmc-supply = <®ulator_3_3v>; + vqmmc-supply = <®ulator_3_3v>; }; &usb1 { diff --git a/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts b/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts index d26f155f5fd9..16ea6f5f2ab8 100644 --- a/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts +++ b/arch/arm/boot/dts/socfpga_cyclone5_sockit.dts @@ -37,6 +37,13 @@ */ ethernet0 = &gmac1; }; + + regulator_3_3v: vcc3p3-regulator { + compatible = "regulator-fixed"; + regulator-name = "VCC3P3"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + }; }; &gmac1 { @@ -53,6 +60,11 @@ rxc-skew-ps = <2000>; }; +&mmc0 { + vmmc-supply = <®ulator_3_3v>; + vqmmc-supply = <®ulator_3_3v>; +}; + &usb1 { status = "okay"; }; diff --git a/arch/arm/boot/dts/zynq-7000.dtsi b/arch/arm/boot/dts/zynq-7000.dtsi index 24036c440440..ce2ef5bec4f2 100644 --- a/arch/arm/boot/dts/zynq-7000.dtsi +++ b/arch/arm/boot/dts/zynq-7000.dtsi @@ -30,7 +30,6 @@ /* kHz uV */ 666667 1000000 333334 1000000 - 222223 1000000 >; }; @@ -65,7 +64,7 @@ interrupt-parent = <&intc>; ranges; - adc@f8007100 { + adc: adc@f8007100 { compatible = "xlnx,zynq-xadc-1.00.a"; reg = <0xf8007100 0x20>; interrupts = <0 7 4>; @@ -137,7 +136,7 @@ <0xF8F00100 0x100>; }; - L2: cache-controller { + L2: cache-controller@f8f02000 { compatible = "arm,pl310-cache"; reg = <0xF8F02000 0x1000>; arm,data-latency = <3 2 2>; @@ -146,10 +145,10 @@ cache-level = <2>; }; - memory-controller@f8006000 { + mc: memory-controller@f8006000 { compatible = "xlnx,zynq-ddrc-a05"; reg = <0xf8006000 0x1000>; - } ; + }; uart0: serial@e0000000 { compatible = "xlnx,xuartps", "cdns,uart-r1p8"; @@ -195,7 +194,7 @@ gem0: ethernet@e000b000 { compatible = "cdns,gem"; - reg = <0xe000b000 0x4000>; + reg = <0xe000b000 0x1000>; status = "disabled"; interrupts = <0 22 4>; clocks = <&clkc 30>, <&clkc 30>, <&clkc 13>; @@ -206,7 +205,7 @@ gem1: ethernet@e000c000 { compatible = "cdns,gem"; - reg = <0xe000c000 0x4000>; + reg = <0xe000c000 0x1000>; status = "disabled"; interrupts = <0 45 4>; clocks = <&clkc 31>, <&clkc 31>, <&clkc 14>; @@ -315,5 +314,16 @@ reg = <0xf8f00600 0x20>; clocks = <&clkc 4>; }; + + watchdog0: watchdog@f8005000 { + clocks = <&clkc 45>; + compatible = "xlnx,zynq-wdt-r1p2"; + device_type = "watchdog"; + interrupt-parent = <&intc>; + interrupts = <0 9 1>; + reg = <0xf8005000 0x1000>; + reset = <0>; + timeout-sec = <10>; + }; }; }; diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 9702b140ae04..f1dc7fc668f3 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -354,6 +354,7 @@ CONFIG_MMC_MVSDIO=y CONFIG_MMC_SUNXI=y CONFIG_MMC_DW=y CONFIG_MMC_DW_EXYNOS=y +CONFIG_MMC_DW_ROCKCHIP=y CONFIG_NEW_LEDS=y CONFIG_LEDS_CLASS=y CONFIG_LEDS_GPIO=y diff --git a/arch/arm/configs/sunxi_defconfig b/arch/arm/configs/sunxi_defconfig index 847045313101..f7ac0379850f 100644 --- a/arch/arm/configs/sunxi_defconfig +++ b/arch/arm/configs/sunxi_defconfig @@ -76,6 +76,7 @@ CONFIG_WATCHDOG=y CONFIG_SUNXI_WATCHDOG=y CONFIG_MFD_AXP20X=y CONFIG_REGULATOR=y +CONFIG_REGULATOR_FIXED_VOLTAGE=y CONFIG_REGULATOR_GPIO=y CONFIG_USB=y CONFIG_USB_EHCI_HCD=y diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 713e807621d2..2d2d6087b9b1 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -10,6 +10,7 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <linux/compiler.h> #include <linux/sched.h> #include <linux/mm.h> #include <linux/dma-mapping.h> @@ -39,10 +40,19 @@ * GCC 3.2.x: miscompiles NEW_AUX_ENT in fs/binfmt_elf.c * (http://gcc.gnu.org/PR8896) and incorrect structure * initialisation in fs/jffs2/erase.c + * GCC 4.8.0-4.8.2: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58854 + * miscompiles find_get_entry(), and can result in EXT3 and EXT4 + * filesystem corruption (possibly other FS too). */ +#ifdef __GNUC__ #if (__GNUC__ == 3 && __GNUC_MINOR__ < 3) #error Your compiler is too buggy; it is known to miscompile kernels. -#error Known good compilers: 3.3 +#error Known good compilers: 3.3, 4.x +#endif +#if GCC_VERSION >= 40800 && GCC_VERSION < 40803 +#error Your compiler is too buggy; it is known to miscompile kernels +#error and result in filesystem corruption and oopses. +#endif #endif int main(void) diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 1412daf4a714..4e79da7c5e30 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -50,8 +50,8 @@ static const char *pcie_axi_sels[] = { "axi", "ahb", }; static const char *ssi_sels[] = { "pll3_pfd2_508m", "pll3_pfd3_454m", "pll4_audio_div", }; static const char *usdhc_sels[] = { "pll2_pfd2_396m", "pll2_pfd0_352m", }; static const char *enfc_sels[] = { "pll2_pfd0_352m", "pll2_bus", "pll3_usb_otg", "pll2_pfd2_396m", }; -static const char *emi_sels[] = { "pll2_pfd2_396m", "pll3_usb_otg", "axi", "pll2_pfd0_352m", }; -static const char *emi_slow_sels[] = { "axi", "pll3_usb_otg", "pll2_pfd2_396m", "pll2_pfd0_352m", }; +static const char *eim_sels[] = { "pll2_pfd2_396m", "pll3_usb_otg", "axi", "pll2_pfd0_352m", }; +static const char *eim_slow_sels[] = { "axi", "pll3_usb_otg", "pll2_pfd2_396m", "pll2_pfd0_352m", }; static const char *vdo_axi_sels[] = { "axi", "ahb", }; static const char *vpu_axi_sels[] = { "axi", "pll2_pfd2_396m", "pll2_pfd0_352m", }; static const char *cko1_sels[] = { "pll3_usb_otg", "pll2_bus", "pll1_sys", "pll5_video_div", @@ -302,8 +302,8 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[IMX6QDL_CLK_USDHC3_SEL] = imx_clk_fixup_mux("usdhc3_sel", base + 0x1c, 18, 1, usdhc_sels, ARRAY_SIZE(usdhc_sels), imx_cscmr1_fixup); clk[IMX6QDL_CLK_USDHC4_SEL] = imx_clk_fixup_mux("usdhc4_sel", base + 0x1c, 19, 1, usdhc_sels, ARRAY_SIZE(usdhc_sels), imx_cscmr1_fixup); clk[IMX6QDL_CLK_ENFC_SEL] = imx_clk_mux("enfc_sel", base + 0x2c, 16, 2, enfc_sels, ARRAY_SIZE(enfc_sels)); - clk[IMX6QDL_CLK_EMI_SEL] = imx_clk_fixup_mux("emi_sel", base + 0x1c, 27, 2, emi_sels, ARRAY_SIZE(emi_sels), imx_cscmr1_fixup); - clk[IMX6QDL_CLK_EMI_SLOW_SEL] = imx_clk_fixup_mux("emi_slow_sel", base + 0x1c, 29, 2, emi_slow_sels, ARRAY_SIZE(emi_slow_sels), imx_cscmr1_fixup); + clk[IMX6QDL_CLK_EIM_SEL] = imx_clk_fixup_mux("eim_sel", base + 0x1c, 27, 2, eim_sels, ARRAY_SIZE(eim_sels), imx_cscmr1_fixup); + clk[IMX6QDL_CLK_EIM_SLOW_SEL] = imx_clk_fixup_mux("eim_slow_sel", base + 0x1c, 29, 2, eim_slow_sels, ARRAY_SIZE(eim_slow_sels), imx_cscmr1_fixup); clk[IMX6QDL_CLK_VDO_AXI_SEL] = imx_clk_mux("vdo_axi_sel", base + 0x18, 11, 1, vdo_axi_sels, ARRAY_SIZE(vdo_axi_sels)); clk[IMX6QDL_CLK_VPU_AXI_SEL] = imx_clk_mux("vpu_axi_sel", base + 0x18, 14, 2, vpu_axi_sels, ARRAY_SIZE(vpu_axi_sels)); clk[IMX6QDL_CLK_CKO1_SEL] = imx_clk_mux("cko1_sel", base + 0x60, 0, 4, cko1_sels, ARRAY_SIZE(cko1_sels)); @@ -354,8 +354,8 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[IMX6QDL_CLK_USDHC4_PODF] = imx_clk_divider("usdhc4_podf", "usdhc4_sel", base + 0x24, 22, 3); clk[IMX6QDL_CLK_ENFC_PRED] = imx_clk_divider("enfc_pred", "enfc_sel", base + 0x2c, 18, 3); clk[IMX6QDL_CLK_ENFC_PODF] = imx_clk_divider("enfc_podf", "enfc_pred", base + 0x2c, 21, 6); - clk[IMX6QDL_CLK_EMI_PODF] = imx_clk_fixup_divider("emi_podf", "emi_sel", base + 0x1c, 20, 3, imx_cscmr1_fixup); - clk[IMX6QDL_CLK_EMI_SLOW_PODF] = imx_clk_fixup_divider("emi_slow_podf", "emi_slow_sel", base + 0x1c, 23, 3, imx_cscmr1_fixup); + clk[IMX6QDL_CLK_EIM_PODF] = imx_clk_fixup_divider("eim_podf", "eim_sel", base + 0x1c, 20, 3, imx_cscmr1_fixup); + clk[IMX6QDL_CLK_EIM_SLOW_PODF] = imx_clk_fixup_divider("eim_slow_podf", "eim_slow_sel", base + 0x1c, 23, 3, imx_cscmr1_fixup); clk[IMX6QDL_CLK_VPU_AXI_PODF] = imx_clk_divider("vpu_axi_podf", "vpu_axi_sel", base + 0x24, 25, 3); clk[IMX6QDL_CLK_CKO1_PODF] = imx_clk_divider("cko1_podf", "cko1_sel", base + 0x60, 4, 3); clk[IMX6QDL_CLK_CKO2_PODF] = imx_clk_divider("cko2_podf", "cko2_sel", base + 0x60, 21, 3); @@ -456,7 +456,7 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node) clk[IMX6QDL_CLK_USDHC2] = imx_clk_gate2("usdhc2", "usdhc2_podf", base + 0x80, 4); clk[IMX6QDL_CLK_USDHC3] = imx_clk_gate2("usdhc3", "usdhc3_podf", base + 0x80, 6); clk[IMX6QDL_CLK_USDHC4] = imx_clk_gate2("usdhc4", "usdhc4_podf", base + 0x80, 8); - clk[IMX6QDL_CLK_EIM_SLOW] = imx_clk_gate2("eim_slow", "emi_slow_podf", base + 0x80, 10); + clk[IMX6QDL_CLK_EIM_SLOW] = imx_clk_gate2("eim_slow", "eim_slow_podf", base + 0x80, 10); clk[IMX6QDL_CLK_VDO_AXI] = imx_clk_gate2("vdo_axi", "vdo_axi_sel", base + 0x80, 12); clk[IMX6QDL_CLK_VPU_AXI] = imx_clk_gate2("vpu_axi", "vpu_axi_podf", base + 0x80, 14); clk[IMX6QDL_CLK_CKO1] = imx_clk_gate("cko1", "cko1_podf", base + 0x60, 7); diff --git a/arch/arm/mach-socfpga/core.h b/arch/arm/mach-socfpga/core.h index 572b8f719ffb..60c443dadb58 100644 --- a/arch/arm/mach-socfpga/core.h +++ b/arch/arm/mach-socfpga/core.h @@ -40,7 +40,7 @@ extern void __iomem *rst_manager_base_addr; extern struct smp_operations socfpga_smp_ops; extern char secondary_trampoline, secondary_trampoline_end; -extern unsigned long cpu1start_addr; +extern unsigned long socfpga_cpu1start_addr; #define SOCFPGA_SCU_VIRT_BASE 0xfffec000 diff --git a/arch/arm/mach-socfpga/headsmp.S b/arch/arm/mach-socfpga/headsmp.S index 95c115d8b5ee..f65ea0af4af3 100644 --- a/arch/arm/mach-socfpga/headsmp.S +++ b/arch/arm/mach-socfpga/headsmp.S @@ -9,21 +9,26 @@ */ #include <linux/linkage.h> #include <linux/init.h> +#include <asm/memory.h> .arch armv7-a ENTRY(secondary_trampoline) - movw r2, #:lower16:cpu1start_addr - movt r2, #:upper16:cpu1start_addr - - /* The socfpga VT cannot handle a 0xC0000000 page offset when loading - the cpu1start_addr, we bit clear it. Tested on HW and VT. */ - bic r2, r2, #0x40000000 - - ldr r0, [r2] - ldr r1, [r0] - bx r1 + /* CPU1 will always fetch from 0x0 when it is brought out of reset. + * Thus, we can just subtract the PAGE_OFFSET to get the physical + * address of &cpu1start_addr. This would not work for platforms + * where the physical memory does not start at 0x0. + */ + adr r0, 1f + ldmia r0, {r1, r2} + sub r2, r2, #PAGE_OFFSET + ldr r3, [r2] + ldr r4, [r3] + bx r4 + .align +1: .long . + .long socfpga_cpu1start_addr ENTRY(secondary_trampoline_end) ENTRY(socfpga_secondary_startup) diff --git a/arch/arm/mach-socfpga/platsmp.c b/arch/arm/mach-socfpga/platsmp.c index 5356a72bc8ce..16ca97b039f9 100644 --- a/arch/arm/mach-socfpga/platsmp.c +++ b/arch/arm/mach-socfpga/platsmp.c @@ -33,11 +33,11 @@ static int socfpga_boot_secondary(unsigned int cpu, struct task_struct *idle) { int trampoline_size = &secondary_trampoline_end - &secondary_trampoline; - if (cpu1start_addr) { + if (socfpga_cpu1start_addr) { memcpy(phys_to_virt(0), &secondary_trampoline, trampoline_size); __raw_writel(virt_to_phys(socfpga_secondary_startup), - (sys_manager_base_addr + (cpu1start_addr & 0x000000ff))); + (sys_manager_base_addr + (socfpga_cpu1start_addr & 0x000000ff))); flush_cache_all(); smp_wmb(); diff --git a/arch/arm/mach-socfpga/socfpga.c b/arch/arm/mach-socfpga/socfpga.c index adbf38314ca8..383d61e138af 100644 --- a/arch/arm/mach-socfpga/socfpga.c +++ b/arch/arm/mach-socfpga/socfpga.c @@ -29,7 +29,7 @@ void __iomem *socfpga_scu_base_addr = ((void __iomem *)(SOCFPGA_SCU_VIRT_BASE)); void __iomem *sys_manager_base_addr; void __iomem *rst_manager_base_addr; -unsigned long cpu1start_addr; +unsigned long socfpga_cpu1start_addr; static struct map_desc scu_io_desc __initdata = { .virtual = SOCFPGA_SCU_VIRT_BASE, @@ -70,7 +70,7 @@ void __init socfpga_sysmgr_init(void) np = of_find_compatible_node(NULL, NULL, "altr,sys-mgr"); if (of_property_read_u32(np, "cpu1-start-addr", - (u32 *) &cpu1start_addr)) + (u32 *) &socfpga_cpu1start_addr)) pr_err("SMP: Need cpu1-start-addr in device tree.\n"); sys_manager_base_addr = of_iomap(np, 0); diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 92bba32d9230..9481f85c56e6 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -559,10 +559,10 @@ void __init mem_init(void) #ifdef CONFIG_MODULES " modules : 0x%08lx - 0x%08lx (%4ld MB)\n" #endif - " .text : 0x%p" " - 0x%p" " (%4d kB)\n" - " .init : 0x%p" " - 0x%p" " (%4d kB)\n" - " .data : 0x%p" " - 0x%p" " (%4d kB)\n" - " .bss : 0x%p" " - 0x%p" " (%4d kB)\n", + " .text : 0x%p" " - 0x%p" " (%4td kB)\n" + " .init : 0x%p" " - 0x%p" " (%4td kB)\n" + " .data : 0x%p" " - 0x%p" " (%4td kB)\n" + " .bss : 0x%p" " - 0x%p" " (%4td kB)\n", MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) + (PAGE_SIZE)), diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index ac9afde76dea..9532f8d5857e 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1,5 +1,6 @@ config ARM64 def_bool y + select ARCH_BINFMT_ELF_RANDOMIZE_PIE select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE select ARCH_HAS_SG_CHAIN select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST @@ -232,7 +233,7 @@ config ARM64_VA_BITS_42 config ARM64_VA_BITS_48 bool "48-bit" - depends on BROKEN + depends on !ARM_SMMU endchoice diff --git a/arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi b/arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi index ac2cb2418025..c46cbb29f3c6 100644 --- a/arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi +++ b/arch/arm64/boot/dts/rtsm_ve-motherboard.dtsi @@ -22,7 +22,7 @@ bank-width = <4>; }; - vram@2,00000000 { + v2m_video_ram: vram@2,00000000 { compatible = "arm,vexpress-vram"; reg = <2 0x00000000 0x00800000>; }; @@ -179,9 +179,42 @@ clcd@1f0000 { compatible = "arm,pl111", "arm,primecell"; reg = <0x1f0000 0x1000>; + interrupt-names = "combined"; interrupts = <14>; clocks = <&v2m_oscclk1>, <&v2m_clk24mhz>; clock-names = "clcdclk", "apb_pclk"; + arm,pl11x,framebuffer = <0x18000000 0x00180000>; + memory-region = <&v2m_video_ram>; + max-memory-bandwidth = <130000000>; /* 16bpp @ 63.5MHz */ + + port { + v2m_clcd_pads: endpoint { + remote-endpoint = <&v2m_clcd_panel>; + arm,pl11x,tft-r0g0b0-pads = <0 8 16>; + }; + }; + + panel { + compatible = "panel-dpi"; + + port { + v2m_clcd_panel: endpoint { + remote-endpoint = <&v2m_clcd_pads>; + }; + }; + + panel-timing { + clock-frequency = <63500127>; + hactive = <1024>; + hback-porch = <152>; + hfront-porch = <48>; + hsync-len = <104>; + vactive = <768>; + vback-porch = <23>; + vfront-porch = <3>; + vsync-len = <4>; + }; + }; }; virtio_block@0130000 { diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 9cd37de9aa8d..4ce602c2c6de 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -78,6 +78,7 @@ CONFIG_NET_XGENE=y # CONFIG_WLAN is not set CONFIG_INPUT_EVDEV=y # CONFIG_SERIO_SERPORT is not set +CONFIG_SERIO_AMBAKMI=y CONFIG_LEGACY_PTY_COUNT=16 CONFIG_SERIAL_8250=y CONFIG_SERIAL_8250_CONSOLE=y @@ -90,6 +91,7 @@ CONFIG_VIRTIO_CONSOLE=y CONFIG_REGULATOR=y CONFIG_REGULATOR_FIXED_VOLTAGE=y CONFIG_FB=y +CONFIG_FB_ARMCLCD=y CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_LOGO=y # CONFIG_LOGO_LINUX_MONO is not set diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index 253e33bc94fb..56de5aadede2 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -37,8 +37,8 @@ typedef s32 compat_ssize_t; typedef s32 compat_time_t; typedef s32 compat_clock_t; typedef s32 compat_pid_t; -typedef u32 __compat_uid_t; -typedef u32 __compat_gid_t; +typedef u16 __compat_uid_t; +typedef u16 __compat_gid_t; typedef u16 __compat_uid16_t; typedef u16 __compat_gid16_t; typedef u32 __compat_uid32_t; diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index 01d3aab64b79..1f65be393139 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -126,7 +126,7 @@ typedef struct user_fpsimd_state elf_fpregset_t; * that it will "exec", and that there is sufficient room for the brk. */ extern unsigned long randomize_et_dyn(unsigned long base); -#define ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_64 / 3)) +#define ELF_ET_DYN_BASE (2 * TASK_SIZE_64 / 3) /* * When the program starts, a1 contains a pointer to a function to be @@ -169,7 +169,7 @@ extern unsigned long arch_randomize_brk(struct mm_struct *mm); #define COMPAT_ELF_PLATFORM ("v8l") #endif -#define COMPAT_ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_32 / 3)) +#define COMPAT_ELF_ET_DYN_BASE (2 * TASK_SIZE_32 / 3) /* AArch32 registers. */ #define COMPAT_ELF_NGREG 18 diff --git a/arch/arm64/include/asm/irq_work.h b/arch/arm64/include/asm/irq_work.h index 8e24ef3f7c82..b4f6b19a8a68 100644 --- a/arch/arm64/include/asm/irq_work.h +++ b/arch/arm64/include/asm/irq_work.h @@ -1,6 +1,8 @@ #ifndef __ASM_IRQ_WORK_H #define __ASM_IRQ_WORK_H +#ifdef CONFIG_SMP + #include <asm/smp.h> static inline bool arch_irq_work_has_interrupt(void) @@ -8,4 +10,13 @@ static inline bool arch_irq_work_has_interrupt(void) return !!__smp_cross_call; } +#else + +static inline bool arch_irq_work_has_interrupt(void) +{ + return false; +} + +#endif + #endif /* __ASM_IRQ_WORK_H */ diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c index 03aaa99e1ea0..95c49ebc660d 100644 --- a/arch/arm64/kernel/efi.c +++ b/arch/arm64/kernel/efi.c @@ -89,7 +89,8 @@ static int __init uefi_init(void) */ if (efi.systab->hdr.signature != EFI_SYSTEM_TABLE_SIGNATURE) { pr_err("System table signature incorrect\n"); - return -EINVAL; + retval = -EINVAL; + goto out; } if ((efi.systab->hdr.revision >> 16) < 2) pr_warn("Warning: EFI system table version %d.%02d, expected 2.00 or greater\n", @@ -103,6 +104,7 @@ static int __init uefi_init(void) for (i = 0; i < (int) sizeof(vendor) - 1 && *c16; ++i) vendor[i] = c16[i]; vendor[i] = '\0'; + early_memunmap(c16, sizeof(vendor)); } pr_info("EFI v%u.%.02u by %s\n", @@ -113,29 +115,11 @@ static int __init uefi_init(void) if (retval == 0) set_bit(EFI_CONFIG_TABLES, &efi.flags); - early_memunmap(c16, sizeof(vendor)); +out: early_memunmap(efi.systab, sizeof(efi_system_table_t)); - return retval; } -static __initdata char memory_type_name[][32] = { - {"Reserved"}, - {"Loader Code"}, - {"Loader Data"}, - {"Boot Code"}, - {"Boot Data"}, - {"Runtime Code"}, - {"Runtime Data"}, - {"Conventional Memory"}, - {"Unusable Memory"}, - {"ACPI Reclaim Memory"}, - {"ACPI Memory NVS"}, - {"Memory Mapped I/O"}, - {"MMIO Port Space"}, - {"PAL Code"}, -}; - /* * Return true for RAM regions we want to permanently reserve. */ @@ -166,10 +150,13 @@ static __init void reserve_regions(void) paddr = md->phys_addr; npages = md->num_pages; - if (uefi_debug) - pr_info(" 0x%012llx-0x%012llx [%s]", + if (uefi_debug) { + char buf[64]; + + pr_info(" 0x%012llx-0x%012llx %s", paddr, paddr + (npages << EFI_PAGE_SHIFT) - 1, - memory_type_name[md->type]); + efi_md_typeattr_format(buf, sizeof(buf), md)); + } memrange_efi_to_native(&paddr, &npages); size = npages << PAGE_SHIFT; @@ -393,11 +380,16 @@ static int __init arm64_enter_virtual_mode(void) return -1; } - pr_info("Remapping and enabling EFI services.\n"); - - /* replace early memmap mapping with permanent mapping */ mapsize = memmap.map_end - memmap.map; early_memunmap(memmap.map, mapsize); + + if (efi_runtime_disabled()) { + pr_info("EFI runtime services will be disabled.\n"); + return -1; + } + + pr_info("Remapping and enabling EFI services.\n"); + /* replace early memmap mapping with permanent mapping */ memmap.map = (__force void *)ioremap_cache((phys_addr_t)memmap.phys_map, mapsize); memmap.map_end = memmap.map + mapsize; diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index c3065dbc4fa2..fde9923af859 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -378,8 +378,3 @@ unsigned long arch_randomize_brk(struct mm_struct *mm) { return randomize_base(mm->brk); } - -unsigned long randomize_et_dyn(unsigned long base) -{ - return randomize_base(base); -} diff --git a/arch/arm64/mm/ioremap.c b/arch/arm64/mm/ioremap.c index fa324bd5a5c4..4a07630a6616 100644 --- a/arch/arm64/mm/ioremap.c +++ b/arch/arm64/mm/ioremap.c @@ -105,10 +105,10 @@ EXPORT_SYMBOL(ioremap_cache); static pte_t bm_pte[PTRS_PER_PTE] __page_aligned_bss; #if CONFIG_ARM64_PGTABLE_LEVELS > 2 -static pte_t bm_pmd[PTRS_PER_PMD] __page_aligned_bss; +static pmd_t bm_pmd[PTRS_PER_PMD] __page_aligned_bss; #endif #if CONFIG_ARM64_PGTABLE_LEVELS > 3 -static pte_t bm_pud[PTRS_PER_PUD] __page_aligned_bss; +static pud_t bm_pud[PTRS_PER_PUD] __page_aligned_bss; #endif static inline pud_t * __init early_ioremap_pud(unsigned long addr) diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 6894ef3e6234..0bf90d26e745 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -297,11 +297,15 @@ static void __init map_mem(void) * create_mapping requires puds, pmds and ptes to be allocated from * memory addressable from the initial direct kernel mapping. * - * The initial direct kernel mapping, located at swapper_pg_dir, - * gives us PUD_SIZE memory starting from PHYS_OFFSET (which must be - * aligned to 2MB as per Documentation/arm64/booting.txt). + * The initial direct kernel mapping, located at swapper_pg_dir, gives + * us PUD_SIZE (4K pages) or PMD_SIZE (64K pages) memory starting from + * PHYS_OFFSET (which must be aligned to 2MB as per + * Documentation/arm64/booting.txt). */ - limit = PHYS_OFFSET + PUD_SIZE; + if (IS_ENABLED(CONFIG_ARM64_64K_PAGES)) + limit = PHYS_OFFSET + PMD_SIZE; + else + limit = PHYS_OFFSET + PUD_SIZE; memblock_set_current_limit(limit); /* map all the memory banks */ diff --git a/arch/arm64/mm/pgd.c b/arch/arm64/mm/pgd.c index 62c6101df260..6682b361d3ac 100644 --- a/arch/arm64/mm/pgd.c +++ b/arch/arm64/mm/pgd.c @@ -30,12 +30,14 @@ #define PGD_SIZE (PTRS_PER_PGD * sizeof(pgd_t)) +static struct kmem_cache *pgd_cache; + pgd_t *pgd_alloc(struct mm_struct *mm) { if (PGD_SIZE == PAGE_SIZE) return (pgd_t *)get_zeroed_page(GFP_KERNEL); else - return kzalloc(PGD_SIZE, GFP_KERNEL); + return kmem_cache_zalloc(pgd_cache, GFP_KERNEL); } void pgd_free(struct mm_struct *mm, pgd_t *pgd) @@ -43,5 +45,17 @@ void pgd_free(struct mm_struct *mm, pgd_t *pgd) if (PGD_SIZE == PAGE_SIZE) free_page((unsigned long)pgd); else - kfree(pgd); + kmem_cache_free(pgd_cache, pgd); +} + +static int __init pgd_cache_init(void) +{ + /* + * Naturally aligned pgds required by the architecture. + */ + if (PGD_SIZE != PAGE_SIZE) + pgd_cache = kmem_cache_create("pgd_cache", PGD_SIZE, PGD_SIZE, + SLAB_PANIC, NULL); + return 0; } +core_initcall(pgd_cache_init); diff --git a/arch/arm64/net/bpf_jit.h b/arch/arm64/net/bpf_jit.h index 2134f7e6c288..de0a81a539a0 100644 --- a/arch/arm64/net/bpf_jit.h +++ b/arch/arm64/net/bpf_jit.h @@ -144,8 +144,12 @@ /* Data-processing (2 source) */ /* Rd = Rn OP Rm */ -#define A64_UDIV(sf, Rd, Rn, Rm) aarch64_insn_gen_data2(Rd, Rn, Rm, \ - A64_VARIANT(sf), AARCH64_INSN_DATA2_UDIV) +#define A64_DATA2(sf, Rd, Rn, Rm, type) aarch64_insn_gen_data2(Rd, Rn, Rm, \ + A64_VARIANT(sf), AARCH64_INSN_DATA2_##type) +#define A64_UDIV(sf, Rd, Rn, Rm) A64_DATA2(sf, Rd, Rn, Rm, UDIV) +#define A64_LSLV(sf, Rd, Rn, Rm) A64_DATA2(sf, Rd, Rn, Rm, LSLV) +#define A64_LSRV(sf, Rd, Rn, Rm) A64_DATA2(sf, Rd, Rn, Rm, LSRV) +#define A64_ASRV(sf, Rd, Rn, Rm) A64_DATA2(sf, Rd, Rn, Rm, ASRV) /* Data-processing (3 source) */ /* Rd = Ra + Rn * Rm */ diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 7ae33545535b..41f1e3e2ea24 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -19,12 +19,13 @@ #define pr_fmt(fmt) "bpf_jit: " fmt #include <linux/filter.h> -#include <linux/moduleloader.h> #include <linux/printk.h> #include <linux/skbuff.h> #include <linux/slab.h> + #include <asm/byteorder.h> #include <asm/cacheflush.h> +#include <asm/debug-monitors.h> #include "bpf_jit.h" @@ -119,6 +120,14 @@ static inline int bpf2a64_offset(int bpf_to, int bpf_from, return to - from; } +static void jit_fill_hole(void *area, unsigned int size) +{ + u32 *ptr; + /* We are guaranteed to have aligned memory. */ + for (ptr = area; size >= sizeof(u32); size -= sizeof(u32)) + *ptr++ = cpu_to_le32(AARCH64_BREAK_FAULT); +} + static inline int epilogue_offset(const struct jit_ctx *ctx) { int to = ctx->offset[ctx->prog->len - 1]; @@ -196,6 +205,12 @@ static void build_epilogue(struct jit_ctx *ctx) emit(A64_RET(A64_LR), ctx); } +/* JITs an eBPF instruction. + * Returns: + * 0 - successfully JITed an 8-byte eBPF instruction. + * >0 - successfully JITed a 16-byte eBPF instruction. + * <0 - failed to JIT. + */ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) { const u8 code = insn->code; @@ -252,6 +267,18 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) emit(A64_MUL(is64, tmp, tmp, src), ctx); emit(A64_SUB(is64, dst, dst, tmp), ctx); break; + case BPF_ALU | BPF_LSH | BPF_X: + case BPF_ALU64 | BPF_LSH | BPF_X: + emit(A64_LSLV(is64, dst, dst, src), ctx); + break; + case BPF_ALU | BPF_RSH | BPF_X: + case BPF_ALU64 | BPF_RSH | BPF_X: + emit(A64_LSRV(is64, dst, dst, src), ctx); + break; + case BPF_ALU | BPF_ARSH | BPF_X: + case BPF_ALU64 | BPF_ARSH | BPF_X: + emit(A64_ASRV(is64, dst, dst, src), ctx); + break; /* dst = -dst */ case BPF_ALU | BPF_NEG: case BPF_ALU64 | BPF_NEG: @@ -443,6 +470,27 @@ emit_cond_jmp: emit(A64_B(jmp_offset), ctx); break; + /* dst = imm64 */ + case BPF_LD | BPF_IMM | BPF_DW: + { + const struct bpf_insn insn1 = insn[1]; + u64 imm64; + + if (insn1.code != 0 || insn1.src_reg != 0 || + insn1.dst_reg != 0 || insn1.off != 0) { + /* Note: verifier in BPF core must catch invalid + * instructions. + */ + pr_err_once("Invalid BPF_LD_IMM64 instruction\n"); + return -EINVAL; + } + + imm64 = (u64)insn1.imm << 32 | imm; + emit_a64_mov_i64(dst, imm64, ctx); + + return 1; + } + /* LDX: dst = *(size *)(src + off) */ case BPF_LDX | BPF_MEM | BPF_W: case BPF_LDX | BPF_MEM | BPF_H: @@ -594,6 +642,10 @@ static int build_body(struct jit_ctx *ctx) ctx->offset[i] = ctx->idx; ret = build_insn(insn, ctx); + if (ret > 0) { + i++; + continue; + } if (ret) return ret; } @@ -613,8 +665,10 @@ void bpf_jit_compile(struct bpf_prog *prog) void bpf_int_jit_compile(struct bpf_prog *prog) { + struct bpf_binary_header *header; struct jit_ctx ctx; int image_size; + u8 *image_ptr; if (!bpf_jit_enable) return; @@ -636,23 +690,25 @@ void bpf_int_jit_compile(struct bpf_prog *prog) goto out; build_prologue(&ctx); - build_epilogue(&ctx); /* Now we know the actual image size. */ image_size = sizeof(u32) * ctx.idx; - ctx.image = module_alloc(image_size); - if (unlikely(ctx.image == NULL)) + header = bpf_jit_binary_alloc(image_size, &image_ptr, + sizeof(u32), jit_fill_hole); + if (header == NULL) goto out; /* 2. Now, the actual pass. */ + ctx.image = (u32 *)image_ptr; ctx.idx = 0; + build_prologue(&ctx); ctx.body_offset = ctx.idx; if (build_body(&ctx)) { - module_free(NULL, ctx.image); + bpf_jit_binary_free(header); goto out; } @@ -663,17 +719,25 @@ void bpf_int_jit_compile(struct bpf_prog *prog) bpf_jit_dump(prog->len, image_size, 2, ctx.image); bpf_flush_icache(ctx.image, ctx.image + ctx.idx); - prog->bpf_func = (void *)ctx.image; - prog->jited = 1; + set_memory_ro((unsigned long)header, header->pages); + prog->bpf_func = (void *)ctx.image; + prog->jited = true; out: kfree(ctx.offset); } void bpf_jit_free(struct bpf_prog *prog) { - if (prog->jited) - module_free(NULL, prog->bpf_func); + unsigned long addr = (unsigned long)prog->bpf_func & PAGE_MASK; + struct bpf_binary_header *header = (void *)addr; + + if (!prog->jited) + goto free_filter; + + set_memory_rw(addr, header->pages); + bpf_jit_binary_free(header); - kfree(prog); +free_filter: + bpf_prog_unlock_free(prog); } diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c index 741b99c1a0b1..c52d7540dc05 100644 --- a/arch/ia64/kernel/efi.c +++ b/arch/ia64/kernel/efi.c @@ -568,6 +568,7 @@ efi_init (void) { const char *unit; unsigned long size; + char buf[64]; md = p; size = md->num_pages << EFI_PAGE_SHIFT; @@ -586,9 +587,10 @@ efi_init (void) unit = "KB"; } - printk("mem%02d: type=%2u, attr=0x%016lx, " + printk("mem%02d: %s " "range=[0x%016lx-0x%016lx) (%4lu%s)\n", - i, md->type, md->attribute, md->phys_addr, + i, efi_md_typeattr_format(buf, sizeof(buf), md), + md->phys_addr, md->phys_addr + efi_md_size(md), size, unit); } } diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index ad6badb6be71..f43aa536c517 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2066,6 +2066,7 @@ config MIPS_CPS support is unavailable. config MIPS_CPS_PM + depends on MIPS_CPS select MIPS_CPC bool diff --git a/arch/mips/ath79/mach-db120.c b/arch/mips/ath79/mach-db120.c index 4d661a1d2dae..9423f5aed287 100644 --- a/arch/mips/ath79/mach-db120.c +++ b/arch/mips/ath79/mach-db120.c @@ -113,7 +113,7 @@ static void __init db120_pci_init(u8 *eeprom) ath79_register_pci(); } #else -static inline void db120_pci_init(void) {} +static inline void db120_pci_init(u8 *eeprom) {} #endif /* CONFIG_PCI */ static void __init db120_setup(void) diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c index 38f4c32e2816..5ebdb32d9a2b 100644 --- a/arch/mips/cavium-octeon/setup.c +++ b/arch/mips/cavium-octeon/setup.c @@ -806,15 +806,6 @@ void __init prom_init(void) #endif } - if (octeon_is_simulation()) { - /* - * The simulator uses a mtdram device pre filled with - * the filesystem. Also specify the calibration delay - * to avoid calculating it every time. - */ - strcat(arcs_cmdline, " rw root=1f00 slram=root,0x40000000,+1073741824"); - } - mips_hpt_frequency = octeon_get_clock_rate(); octeon_init_cvmcount(); diff --git a/arch/mips/include/asm/cop2.h b/arch/mips/include/asm/cop2.h index 51f80bd36fcc..63b3468ede4c 100644 --- a/arch/mips/include/asm/cop2.h +++ b/arch/mips/include/asm/cop2.h @@ -37,15 +37,15 @@ extern void nlm_cop2_restore(struct nlm_cop2_state *); #define cop2_present 1 #define cop2_lazy_restore 1 -#define cop2_save(r) do { (r); } while (0) -#define cop2_restore(r) do { (r); } while (0) +#define cop2_save(r) do { (void)(r); } while (0) +#define cop2_restore(r) do { (void)(r); } while (0) #else #define cop2_present 0 #define cop2_lazy_restore 0 -#define cop2_save(r) do { (r); } while (0) -#define cop2_restore(r) do { (r); } while (0) +#define cop2_save(r) do { (void)(r); } while (0) +#define cop2_restore(r) do { (void)(r); } while (0) #endif enum cu2_ops { diff --git a/arch/mips/include/asm/ftrace.h b/arch/mips/include/asm/ftrace.h index 992aaba603b5..b463f2aa5a61 100644 --- a/arch/mips/include/asm/ftrace.h +++ b/arch/mips/include/asm/ftrace.h @@ -24,7 +24,7 @@ do { \ asm volatile ( \ "1: " load " %[tmp_dst], 0(%[tmp_src])\n" \ " li %[tmp_err], 0\n" \ - "2:\n" \ + "2: .insn\n" \ \ ".section .fixup, \"ax\"\n" \ "3: li %[tmp_err], 1\n" \ @@ -46,7 +46,7 @@ do { \ asm volatile ( \ "1: " store " %[tmp_src], 0(%[tmp_dst])\n"\ " li %[tmp_err], 0\n" \ - "2:\n" \ + "2: .insn\n" \ \ ".section .fixup, \"ax\"\n" \ "3: li %[tmp_err], 1\n" \ diff --git a/arch/mips/include/asm/idle.h b/arch/mips/include/asm/idle.h index d9f932de80e9..1c967abd545c 100644 --- a/arch/mips/include/asm/idle.h +++ b/arch/mips/include/asm/idle.h @@ -8,19 +8,12 @@ extern void (*cpu_wait)(void); extern void r4k_wait(void); extern asmlinkage void __r4k_wait(void); extern void r4k_wait_irqoff(void); -extern void __pastwait(void); static inline int using_rollback_handler(void) { return cpu_wait == r4k_wait; } -static inline int address_is_in_r4k_wait_irqoff(unsigned long addr) -{ - return addr >= (unsigned long)r4k_wait_irqoff && - addr < (unsigned long)__pastwait; -} - extern int mips_cpuidle_wait_enter(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index); diff --git a/arch/mips/include/uapi/asm/ptrace.h b/arch/mips/include/uapi/asm/ptrace.h index bbcfb8ba8106..91a3d197ede3 100644 --- a/arch/mips/include/uapi/asm/ptrace.h +++ b/arch/mips/include/uapi/asm/ptrace.h @@ -9,6 +9,8 @@ #ifndef _UAPI_ASM_PTRACE_H #define _UAPI_ASM_PTRACE_H +#include <linux/types.h> + /* 0 - 31 are integer registers, 32 - 63 are fp registers. */ #define FPR_BASE 32 #define PC 64 diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c index 09ce45980758..0b9082b6b683 100644 --- a/arch/mips/kernel/idle.c +++ b/arch/mips/kernel/idle.c @@ -68,9 +68,6 @@ void r4k_wait_irqoff(void) " wait \n" " .set pop \n"); local_irq_enable(); - __asm__( - " .globl __pastwait \n" - "__pastwait: \n"); } /* diff --git a/arch/mips/lasat/Kconfig b/arch/mips/lasat/Kconfig index 1d2ee8a9be13..8776d0a34274 100644 --- a/arch/mips/lasat/Kconfig +++ b/arch/mips/lasat/Kconfig @@ -4,7 +4,7 @@ config PICVUE config PICVUE_PROC tristate "PICVUE LCD display driver /proc interface" - depends on PICVUE + depends on PICVUE && PROC_FS config DS1603 bool "DS1603 RTC driver" diff --git a/arch/mips/loongson/lemote-2f/clock.c b/arch/mips/loongson/lemote-2f/clock.c index a217061beee3..462e34d46b4a 100644 --- a/arch/mips/loongson/lemote-2f/clock.c +++ b/arch/mips/loongson/lemote-2f/clock.c @@ -91,6 +91,7 @@ EXPORT_SYMBOL(clk_put); int clk_set_rate(struct clk *clk, unsigned long rate) { + unsigned int rate_khz = rate / 1000; struct cpufreq_frequency_table *pos; int ret = 0; int regval; @@ -107,9 +108,9 @@ int clk_set_rate(struct clk *clk, unsigned long rate) propagate_rate(clk); cpufreq_for_each_valid_entry(pos, loongson2_clockmod_table) - if (rate == pos->frequency) + if (rate_khz == pos->frequency) break; - if (rate != pos->frequency) + if (rate_khz != pos->frequency) return -ENOTSUPP; clk->rate = rate; diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index 7a4727795a70..51a0fde4bec1 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -1023,7 +1023,7 @@ emul: goto emul; case cop1x_op: - if (cpu_has_mips_4_5 || cpu_has_mips64) + if (cpu_has_mips_4_5 || cpu_has_mips64 || cpu_has_mips32r2) /* its one of ours */ goto emul; @@ -1068,7 +1068,7 @@ emul: break; case cop1x_op: - if (!cpu_has_mips_4_5 && !cpu_has_mips64) + if (!cpu_has_mips_4_5 && !cpu_has_mips64 && !cpu_has_mips32r2) return SIGILL; sig = fpux_emu(xcp, ctx, ir, fault_addr); diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index a08dd53a1cc5..b5f228e7eae6 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -1062,6 +1062,7 @@ static void build_update_entries(u32 **p, unsigned int tmp, unsigned int ptep) struct mips_huge_tlb_info { int huge_pte; int restore_scratch; + bool need_reload_pte; }; static struct mips_huge_tlb_info @@ -1076,6 +1077,7 @@ build_fast_tlb_refill_handler (u32 **p, struct uasm_label **l, rv.huge_pte = scratch; rv.restore_scratch = 0; + rv.need_reload_pte = false; if (check_for_high_segbits) { UASM_i_MFC0(p, tmp, C0_BADVADDR); @@ -1264,6 +1266,7 @@ static void build_r4000_tlb_refill_handler(void) } else { htlb_info.huge_pte = K0; htlb_info.restore_scratch = 0; + htlb_info.need_reload_pte = true; vmalloc_mode = refill_noscratch; /* * create the plain linear handler @@ -1300,7 +1303,8 @@ static void build_r4000_tlb_refill_handler(void) } #ifdef CONFIG_MIPS_HUGE_TLB_SUPPORT uasm_l_tlb_huge_update(&l, p); - UASM_i_LW(&p, K0, 0, K1); + if (htlb_info.need_reload_pte) + UASM_i_LW(&p, htlb_info.huge_pte, 0, K1); build_huge_update_entries(&p, htlb_info.huge_pte, K1); build_huge_tlb_write_entry(&p, &l, &r, K0, tlb_random, htlb_info.restore_scratch); diff --git a/arch/mips/mti-malta/Makefile b/arch/mips/mti-malta/Makefile index b9510ea8db56..6510ace272d4 100644 --- a/arch/mips/mti-malta/Makefile +++ b/arch/mips/mti-malta/Makefile @@ -5,8 +5,9 @@ # Copyright (C) 2008 Wind River Systems, Inc. # written by Ralf Baechle <ralf@linux-mips.org> # -obj-y := malta-amon.o malta-display.o malta-init.o \ +obj-y := malta-display.o malta-init.o \ malta-int.o malta-memory.o malta-platform.o \ malta-reset.o malta-setup.o malta-time.o +obj-$(CONFIG_MIPS_CMP) += malta-amon.o obj-$(CONFIG_MIPS_MALTA_PM) += malta-pm.o diff --git a/arch/mips/mti-sead3/Makefile b/arch/mips/mti-sead3/Makefile index febf4334545e..2ae49e99eb67 100644 --- a/arch/mips/mti-sead3/Makefile +++ b/arch/mips/mti-sead3/Makefile @@ -14,7 +14,6 @@ obj-y := sead3-lcd.o sead3-display.o sead3-init.o \ sead3-setup.o sead3-time.o obj-y += sead3-i2c-dev.o sead3-i2c.o \ - sead3-pic32-i2c-drv.o sead3-pic32-bus.o \ leds-sead3.o sead3-leds.o obj-$(CONFIG_EARLY_PRINTK) += sead3-console.o diff --git a/arch/mips/mti-sead3/sead3-i2c.c b/arch/mips/mti-sead3/sead3-i2c.c index f70d5fc58ef5..795ae83894e0 100644 --- a/arch/mips/mti-sead3/sead3-i2c.c +++ b/arch/mips/mti-sead3/sead3-i2c.c @@ -5,10 +5,8 @@ * * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. */ -#include <linux/module.h> #include <linux/init.h> #include <linux/platform_device.h> -#include <irq.h> struct resource sead3_i2c_resources[] = { { @@ -30,8 +28,4 @@ static int __init sead3_i2c_init(void) return platform_device_register(&sead3_i2c_device); } -module_init(sead3_i2c_init); - -MODULE_AUTHOR("Chris Dearman <chris@mips.com>"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("I2C probe driver for SEAD3"); +device_initcall(sead3_i2c_init); diff --git a/arch/mips/mti-sead3/sead3-pic32-bus.c b/arch/mips/mti-sead3/sead3-pic32-bus.c deleted file mode 100644 index 3b12aa5a7c88..000000000000 --- a/arch/mips/mti-sead3/sead3-pic32-bus.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. - */ -#include <linux/delay.h> -#include <linux/kernel.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/errno.h> - -#define PIC32_NULL 0x00 -#define PIC32_RD 0x01 -#define PIC32_SYSRD 0x02 -#define PIC32_WR 0x10 -#define PIC32_SYSWR 0x20 -#define PIC32_IRQ_CLR 0x40 -#define PIC32_STATUS 0x80 - -#define DELAY() udelay(100) /* FIXME: needed? */ - -/* spinlock to ensure atomic access to PIC32 */ -static DEFINE_SPINLOCK(pic32_bus_lock); - -/* FIXME: io_remap these */ -static void __iomem *bus_xfer = (void __iomem *)0xbf000600; -static void __iomem *bus_status = (void __iomem *)0xbf000060; - -static inline unsigned int ioready(void) -{ - return readl(bus_status) & 1; -} - -static inline void wait_ioready(void) -{ - do { } while (!ioready()); -} - -static inline void wait_ioclear(void) -{ - do { } while (ioready()); -} - -static inline void check_ioclear(void) -{ - if (ioready()) { - pr_debug("ioclear: initially busy\n"); - do { - (void) readl(bus_xfer); - DELAY(); - } while (ioready()); - pr_debug("ioclear: cleared busy\n"); - } -} - -u32 pic32_bus_readl(u32 reg) -{ - unsigned long flags; - u32 status, val; - - spin_lock_irqsave(&pic32_bus_lock, flags); - - check_ioclear(); - - writel((PIC32_RD << 24) | (reg & 0x00ffffff), bus_xfer); - DELAY(); - wait_ioready(); - status = readl(bus_xfer); - DELAY(); - val = readl(bus_xfer); - wait_ioclear(); - - pr_debug("pic32_bus_readl: *%x -> %x (status=%x)\n", reg, val, status); - - spin_unlock_irqrestore(&pic32_bus_lock, flags); - - return val; -} - -void pic32_bus_writel(u32 val, u32 reg) -{ - unsigned long flags; - u32 status; - - spin_lock_irqsave(&pic32_bus_lock, flags); - - check_ioclear(); - - writel((PIC32_WR << 24) | (reg & 0x00ffffff), bus_xfer); - DELAY(); - writel(val, bus_xfer); - DELAY(); - wait_ioready(); - status = readl(bus_xfer); - wait_ioclear(); - - pr_debug("pic32_bus_writel: *%x <- %x (status=%x)\n", reg, val, status); - - spin_unlock_irqrestore(&pic32_bus_lock, flags); -} diff --git a/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c b/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c deleted file mode 100644 index 80fe194cfa53..000000000000 --- a/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c +++ /dev/null @@ -1,423 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. - */ -#include <linux/delay.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/platform_device.h> -#include <linux/init.h> -#include <linux/errno.h> -#include <linux/i2c.h> -#include <linux/slab.h> - -#define PIC32_I2CxCON 0x0000 -#define PIC32_I2CxCONCLR 0x0004 -#define PIC32_I2CxCONSET 0x0008 -#define PIC32_I2CxCONINV 0x000C -#define I2CCON_ON (1<<15) -#define I2CCON_FRZ (1<<14) -#define I2CCON_SIDL (1<<13) -#define I2CCON_SCLREL (1<<12) -#define I2CCON_STRICT (1<<11) -#define I2CCON_A10M (1<<10) -#define I2CCON_DISSLW (1<<9) -#define I2CCON_SMEN (1<<8) -#define I2CCON_GCEN (1<<7) -#define I2CCON_STREN (1<<6) -#define I2CCON_ACKDT (1<<5) -#define I2CCON_ACKEN (1<<4) -#define I2CCON_RCEN (1<<3) -#define I2CCON_PEN (1<<2) -#define I2CCON_RSEN (1<<1) -#define I2CCON_SEN (1<<0) - -#define PIC32_I2CxSTAT 0x0010 -#define PIC32_I2CxSTATCLR 0x0014 -#define PIC32_I2CxSTATSET 0x0018 -#define PIC32_I2CxSTATINV 0x001C -#define I2CSTAT_ACKSTAT (1<<15) -#define I2CSTAT_TRSTAT (1<<14) -#define I2CSTAT_BCL (1<<10) -#define I2CSTAT_GCSTAT (1<<9) -#define I2CSTAT_ADD10 (1<<8) -#define I2CSTAT_IWCOL (1<<7) -#define I2CSTAT_I2COV (1<<6) -#define I2CSTAT_DA (1<<5) -#define I2CSTAT_P (1<<4) -#define I2CSTAT_S (1<<3) -#define I2CSTAT_RW (1<<2) -#define I2CSTAT_RBF (1<<1) -#define I2CSTAT_TBF (1<<0) - -#define PIC32_I2CxADD 0x0020 -#define PIC32_I2CxADDCLR 0x0024 -#define PIC32_I2CxADDSET 0x0028 -#define PIC32_I2CxADDINV 0x002C -#define PIC32_I2CxMSK 0x0030 -#define PIC32_I2CxMSKCLR 0x0034 -#define PIC32_I2CxMSKSET 0x0038 -#define PIC32_I2CxMSKINV 0x003C -#define PIC32_I2CxBRG 0x0040 -#define PIC32_I2CxBRGCLR 0x0044 -#define PIC32_I2CxBRGSET 0x0048 -#define PIC32_I2CxBRGINV 0x004C -#define PIC32_I2CxTRN 0x0050 -#define PIC32_I2CxTRNCLR 0x0054 -#define PIC32_I2CxTRNSET 0x0058 -#define PIC32_I2CxTRNINV 0x005C -#define PIC32_I2CxRCV 0x0060 - -struct i2c_platform_data { - u32 base; - struct i2c_adapter adap; - u32 xfer_timeout; - u32 ack_timeout; - u32 ctl_timeout; -}; - -extern u32 pic32_bus_readl(u32 reg); -extern void pic32_bus_writel(u32 val, u32 reg); - -static inline void -StartI2C(struct i2c_platform_data *adap) -{ - pr_debug("StartI2C\n"); - pic32_bus_writel(I2CCON_SEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -StopI2C(struct i2c_platform_data *adap) -{ - pr_debug("StopI2C\n"); - pic32_bus_writel(I2CCON_PEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -AckI2C(struct i2c_platform_data *adap) -{ - pr_debug("AckI2C\n"); - pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONCLR); - pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); -} - -static inline void -NotAckI2C(struct i2c_platform_data *adap) -{ - pr_debug("NakI2C\n"); - pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONSET); - pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); -} - -static inline int -IdleI2C(struct i2c_platform_data *adap) -{ - int i; - - pr_debug("IdleI2C\n"); - for (i = 0; i < adap->ctl_timeout; i++) { - if (((pic32_bus_readl(adap->base + PIC32_I2CxCON) & - (I2CCON_ACKEN | I2CCON_RCEN | I2CCON_PEN | I2CCON_RSEN | - I2CCON_SEN)) == 0) && - ((pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & - (I2CSTAT_TRSTAT)) == 0)) - return 0; - udelay(1); - } - return -ETIMEDOUT; -} - -static inline u32 -MasterWriteI2C(struct i2c_platform_data *adap, u32 byte) -{ - pr_debug("MasterWriteI2C\n"); - - pic32_bus_writel(byte, adap->base + PIC32_I2CxTRN); - - return pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_IWCOL; -} - -static inline u32 -MasterReadI2C(struct i2c_platform_data *adap) -{ - pr_debug("MasterReadI2C\n"); - - pic32_bus_writel(I2CCON_RCEN, adap->base + PIC32_I2CxCONSET); - - while (pic32_bus_readl(adap->base + PIC32_I2CxCON) & I2CCON_RCEN) - ; - - pic32_bus_writel(I2CSTAT_I2COV, adap->base + PIC32_I2CxSTATCLR); - - return pic32_bus_readl(adap->base + PIC32_I2CxRCV); -} - -static int -do_address(struct i2c_platform_data *adap, unsigned int addr, int rd) -{ - pr_debug("doaddress\n"); - - IdleI2C(adap); - StartI2C(adap); - IdleI2C(adap); - - addr <<= 1; - if (rd) - addr |= 1; - - if (MasterWriteI2C(adap, addr)) - return -EIO; - IdleI2C(adap); - if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_ACKSTAT) - return -EIO; - return 0; -} - -static int -i2c_read(struct i2c_platform_data *adap, unsigned char *buf, - unsigned int len) -{ - int i; - u32 data; - - pr_debug("i2c_read\n"); - - i = 0; - while (i < len) { - data = MasterReadI2C(adap); - buf[i++] = data; - if (i < len) - AckI2C(adap); - else - NotAckI2C(adap); - } - - StopI2C(adap); - IdleI2C(adap); - return 0; -} - -static int -i2c_write(struct i2c_platform_data *adap, unsigned char *buf, - unsigned int len) -{ - int i; - u32 data; - - pr_debug("i2c_write\n"); - - i = 0; - while (i < len) { - data = buf[i]; - if (MasterWriteI2C(adap, data)) - return -EIO; - IdleI2C(adap); - if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & - I2CSTAT_ACKSTAT) - return -EIO; - i++; - } - - StopI2C(adap); - IdleI2C(adap); - return 0; -} - -static int -platform_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) -{ - struct i2c_platform_data *adap = i2c_adap->algo_data; - struct i2c_msg *p; - int i, err = 0; - - pr_debug("platform_xfer\n"); - for (i = 0; i < num; i++) { -#define __BUFSIZE 80 - int ii; - static char buf[__BUFSIZE]; - char *b = buf; - - p = &msgs[i]; - b += sprintf(buf, " [%d bytes]", p->len); - if ((p->flags & I2C_M_RD) == 0) { - for (ii = 0; ii < p->len; ii++) { - if (b < &buf[__BUFSIZE-4]) { - b += sprintf(b, " %02x", p->buf[ii]); - } else { - strcat(b, "..."); - break; - } - } - } - pr_debug("xfer%d: DevAddr: %04x Op:%s Data:%s\n", i, p->addr, - (p->flags & I2C_M_RD) ? "Rd" : "Wr", buf); - } - - - for (i = 0; !err && i < num; i++) { - p = &msgs[i]; - err = do_address(adap, p->addr, p->flags & I2C_M_RD); - if (err || !p->len) - continue; - if (p->flags & I2C_M_RD) - err = i2c_read(adap, p->buf, p->len); - else - err = i2c_write(adap, p->buf, p->len); - } - - /* Return the number of messages processed, or the error code. */ - if (err == 0) - err = num; - - return err; -} - -static u32 -platform_func(struct i2c_adapter *adap) -{ - pr_debug("platform_algo\n"); - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; -} - -static const struct i2c_algorithm platform_algo = { - .master_xfer = platform_xfer, - .functionality = platform_func, -}; - -static void i2c_platform_setup(struct i2c_platform_data *priv) -{ - pr_debug("i2c_platform_setup\n"); - - pic32_bus_writel(500, priv->base + PIC32_I2CxBRG); - pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONCLR); - pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONSET); - pic32_bus_writel((I2CSTAT_BCL | I2CSTAT_IWCOL), - (priv->base + PIC32_I2CxSTATCLR)); -} - -static void i2c_platform_disable(struct i2c_platform_data *priv) -{ - pr_debug("i2c_platform_disable\n"); -} - -static int i2c_platform_probe(struct platform_device *pdev) -{ - struct i2c_platform_data *priv; - struct resource *r; - int ret; - - pr_debug("i2c_platform_probe\n"); - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!r) - return -ENODEV; - - priv = devm_kzalloc(&pdev->dev, sizeof(struct i2c_platform_data), - GFP_KERNEL); - if (!priv) - return -ENOMEM; - - /* FIXME: need to allocate resource in PIC32 space */ -#if 0 - priv->base = bus_request_region(r->start, resource_size(r), - pdev->name); -#else - priv->base = r->start; -#endif - if (!priv->base) - return -EBUSY; - - priv->xfer_timeout = 200; - priv->ack_timeout = 200; - priv->ctl_timeout = 200; - - priv->adap.nr = pdev->id; - priv->adap.algo = &platform_algo; - priv->adap.algo_data = priv; - priv->adap.dev.parent = &pdev->dev; - strlcpy(priv->adap.name, "PIC32 I2C", sizeof(priv->adap.name)); - - i2c_platform_setup(priv); - - ret = i2c_add_numbered_adapter(&priv->adap); - if (ret) { - i2c_platform_disable(priv); - return ret; - } - - platform_set_drvdata(pdev, priv); - return 0; -} - -static int i2c_platform_remove(struct platform_device *pdev) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - pr_debug("i2c_platform_remove\n"); - platform_set_drvdata(pdev, NULL); - i2c_del_adapter(&priv->adap); - i2c_platform_disable(priv); - return 0; -} - -#ifdef CONFIG_PM -static int -i2c_platform_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - dev_dbg(&pdev->dev, "i2c_platform_disable\n"); - i2c_platform_disable(priv); - - return 0; -} - -static int -i2c_platform_resume(struct platform_device *pdev) -{ - struct i2c_platform_data *priv = platform_get_drvdata(pdev); - - dev_dbg(&pdev->dev, "i2c_platform_setup\n"); - i2c_platform_setup(priv); - - return 0; -} -#else -#define i2c_platform_suspend NULL -#define i2c_platform_resume NULL -#endif - -static struct platform_driver i2c_platform_driver = { - .driver = { - .name = "i2c_pic32", - .owner = THIS_MODULE, - }, - .probe = i2c_platform_probe, - .remove = i2c_platform_remove, - .suspend = i2c_platform_suspend, - .resume = i2c_platform_resume, -}; - -static int __init -i2c_platform_init(void) -{ - pr_debug("i2c_platform_init\n"); - return platform_driver_register(&i2c_platform_driver); -} - -static void __exit -i2c_platform_exit(void) -{ - pr_debug("i2c_platform_exit\n"); - platform_driver_unregister(&i2c_platform_driver); -} - -MODULE_AUTHOR("Chris Dearman, MIPS Technologies INC."); -MODULE_DESCRIPTION("PIC32 I2C driver"); -MODULE_LICENSE("GPL"); - -module_init(i2c_platform_init); -module_exit(i2c_platform_exit); diff --git a/arch/mips/pci/pci-lantiq.c b/arch/mips/pci/pci-lantiq.c index 37fe8e7887e2..d3ed15b2b2d1 100644 --- a/arch/mips/pci/pci-lantiq.c +++ b/arch/mips/pci/pci-lantiq.c @@ -215,17 +215,12 @@ static int ltq_pci_probe(struct platform_device *pdev) pci_clear_flags(PCI_PROBE_ONLY); - res_cfg = platform_get_resource(pdev, IORESOURCE_MEM, 0); res_bridge = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!res_cfg || !res_bridge) { - dev_err(&pdev->dev, "missing memory resources\n"); - return -EINVAL; - } - ltq_pci_membase = devm_ioremap_resource(&pdev->dev, res_bridge); if (IS_ERR(ltq_pci_membase)) return PTR_ERR(ltq_pci_membase); + res_cfg = platform_get_resource(pdev, IORESOURCE_MEM, 0); ltq_pci_mapped_cfg = devm_ioremap_resource(&pdev->dev, res_cfg); if (IS_ERR(ltq_pci_mapped_cfg)) return PTR_ERR(ltq_pci_mapped_cfg); diff --git a/arch/mips/pmcs-msp71xx/msp_irq.c b/arch/mips/pmcs-msp71xx/msp_irq.c index f914c753de21..8d53d7a2ed45 100644 --- a/arch/mips/pmcs-msp71xx/msp_irq.c +++ b/arch/mips/pmcs-msp71xx/msp_irq.c @@ -16,6 +16,7 @@ #include <linux/time.h> #include <asm/irq_cpu.h> +#include <asm/setup.h> #include <msp_int.h> diff --git a/arch/mips/pmcs-msp71xx/msp_irq_cic.c b/arch/mips/pmcs-msp71xx/msp_irq_cic.c index b8df2f7b3328..1207ec4dfb77 100644 --- a/arch/mips/pmcs-msp71xx/msp_irq_cic.c +++ b/arch/mips/pmcs-msp71xx/msp_irq_cic.c @@ -131,11 +131,11 @@ static int msp_cic_irq_set_affinity(struct irq_data *d, int cpu; unsigned long flags; unsigned int mtflags; - unsigned long imask = (1 << (irq - MSP_CIC_INTBASE)); + unsigned long imask = (1 << (d->irq - MSP_CIC_INTBASE)); volatile u32 *cic_mask = (volatile u32 *)CIC_VPE0_MSK_REG; /* timer balancing should be disabled in kernel code */ - BUG_ON(irq == MSP_INT_VPE0_TIMER || irq == MSP_INT_VPE1_TIMER); + BUG_ON(d->irq == MSP_INT_VPE0_TIMER || d->irq == MSP_INT_VPE1_TIMER); LOCK_CORE(flags, mtflags); /* enable if any of each VPE's TCs require this IRQ */ diff --git a/arch/mips/sibyte/Makefile b/arch/mips/sibyte/Makefile index c8ed2c807e69..455c40d6d625 100644 --- a/arch/mips/sibyte/Makefile +++ b/arch/mips/sibyte/Makefile @@ -25,3 +25,4 @@ obj-$(CONFIG_SIBYTE_RHONE) += swarm/ obj-$(CONFIG_SIBYTE_SENTOSA) += swarm/ obj-$(CONFIG_SIBYTE_SWARM) += swarm/ obj-$(CONFIG_SIBYTE_BIGSUR) += swarm/ +obj-$(CONFIG_SIBYTE_LITTLESUR) += swarm/ diff --git a/arch/sparc/include/asm/oplib_64.h b/arch/sparc/include/asm/oplib_64.h index f34682430fcf..2e3a4add8591 100644 --- a/arch/sparc/include/asm/oplib_64.h +++ b/arch/sparc/include/asm/oplib_64.h @@ -62,7 +62,8 @@ struct linux_mem_p1275 { /* You must call prom_init() before using any of the library services, * preferably as early as possible. Pass it the romvec pointer. */ -void prom_init(void *cif_handler, void *cif_stack); +void prom_init(void *cif_handler); +void prom_init_report(void); /* Boot argument acquisition, returns the boot command line string. */ char *prom_getbootargs(void); diff --git a/arch/sparc/include/asm/setup.h b/arch/sparc/include/asm/setup.h index f5fffd84d0dd..29d64b1758ed 100644 --- a/arch/sparc/include/asm/setup.h +++ b/arch/sparc/include/asm/setup.h @@ -48,6 +48,8 @@ unsigned long safe_compute_effective_address(struct pt_regs *, unsigned int); #endif #ifdef CONFIG_SPARC64 +void __init start_early_boot(void); + /* unaligned_64.c */ int handle_ldf_stq(u32 insn, struct pt_regs *regs); void handle_ld_nf(u32 insn, struct pt_regs *regs); diff --git a/arch/sparc/kernel/entry.h b/arch/sparc/kernel/entry.h index ebaba6167dd4..88d322b67fac 100644 --- a/arch/sparc/kernel/entry.h +++ b/arch/sparc/kernel/entry.h @@ -65,13 +65,10 @@ struct pause_patch_entry { extern struct pause_patch_entry __pause_3insn_patch, __pause_3insn_patch_end; -void __init per_cpu_patch(void); void sun4v_patch_1insn_range(struct sun4v_1insn_patch_entry *, struct sun4v_1insn_patch_entry *); void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *, struct sun4v_2insn_patch_entry *); -void __init sun4v_patch(void); -void __init boot_cpu_id_too_large(int cpu); extern unsigned int dcache_parity_tl1_occurred; extern unsigned int icache_parity_tl1_occurred; diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S index 4fdeb8040d4d..3d61fcae7ee3 100644 --- a/arch/sparc/kernel/head_64.S +++ b/arch/sparc/kernel/head_64.S @@ -672,14 +672,12 @@ tlb_fixup_done: sethi %hi(init_thread_union), %g6 or %g6, %lo(init_thread_union), %g6 ldx [%g6 + TI_TASK], %g4 - mov %sp, %l6 wr %g0, ASI_P, %asi mov 1, %g1 sllx %g1, THREAD_SHIFT, %g1 sub %g1, (STACKFRAME_SZ + STACK_BIAS), %g1 add %g6, %g1, %sp - mov 0, %fp /* Set per-cpu pointer initially to zero, this makes * the boot-cpu use the in-kernel-image per-cpu areas @@ -706,44 +704,14 @@ tlb_fixup_done: nop #endif - mov %l6, %o1 ! OpenPROM stack call prom_init mov %l7, %o0 ! OpenPROM cif handler - /* Initialize current_thread_info()->cpu as early as possible. - * In order to do that accurately we have to patch up the get_cpuid() - * assembler sequences. And that, in turn, requires that we know - * if we are on a Starfire box or not. While we're here, patch up - * the sun4v sequences as well. + /* To create a one-register-window buffer between the kernel's + * initial stack and the last stack frame we use from the firmware, + * do the rest of the boot from a C helper function. */ - call check_if_starfire - nop - call per_cpu_patch - nop - call sun4v_patch - nop - -#ifdef CONFIG_SMP - call hard_smp_processor_id - nop - cmp %o0, NR_CPUS - blu,pt %xcc, 1f - nop - call boot_cpu_id_too_large - nop - /* Not reached... */ - -1: -#else - mov 0, %o0 -#endif - sth %o0, [%g6 + TI_CPU] - - call prom_init_report - nop - - /* Off we go.... */ - call start_kernel + call start_early_boot nop /* Not reached... */ diff --git a/arch/sparc/kernel/hvtramp.S b/arch/sparc/kernel/hvtramp.S index b7ddcdd1dea9..cdbfec299f2f 100644 --- a/arch/sparc/kernel/hvtramp.S +++ b/arch/sparc/kernel/hvtramp.S @@ -109,7 +109,6 @@ hv_cpu_startup: sllx %g5, THREAD_SHIFT, %g5 sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5 add %g6, %g5, %sp - mov 0, %fp call init_irqwork_curcpu nop diff --git a/arch/sparc/kernel/setup_64.c b/arch/sparc/kernel/setup_64.c index e629b8377587..c38d19fc27ba 100644 --- a/arch/sparc/kernel/setup_64.c +++ b/arch/sparc/kernel/setup_64.c @@ -30,6 +30,7 @@ #include <linux/cpu.h> #include <linux/initrd.h> #include <linux/module.h> +#include <linux/start_kernel.h> #include <asm/io.h> #include <asm/processor.h> @@ -162,7 +163,7 @@ char reboot_command[COMMAND_LINE_SIZE]; static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; -void __init per_cpu_patch(void) +static void __init per_cpu_patch(void) { struct cpuid_patch_entry *p; unsigned long ver; @@ -254,7 +255,7 @@ void sun4v_patch_2insn_range(struct sun4v_2insn_patch_entry *start, } } -void __init sun4v_patch(void) +static void __init sun4v_patch(void) { extern void sun4v_hvapi_init(void); @@ -323,14 +324,25 @@ static void __init pause_patch(void) } } -#ifdef CONFIG_SMP -void __init boot_cpu_id_too_large(int cpu) +void __init start_early_boot(void) { - prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n", - cpu, NR_CPUS); - prom_halt(); + int cpu; + + check_if_starfire(); + per_cpu_patch(); + sun4v_patch(); + + cpu = hard_smp_processor_id(); + if (cpu >= NR_CPUS) { + prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n", + cpu, NR_CPUS); + prom_halt(); + } + current_thread_info()->cpu = cpu; + + prom_init_report(); + start_kernel(); } -#endif /* On Ultra, we support all of the v8 capabilities. */ unsigned long sparc64_elf_hwcap = (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | diff --git a/arch/sparc/kernel/trampoline_64.S b/arch/sparc/kernel/trampoline_64.S index 737f8cbc7d56..88ede1d53b4c 100644 --- a/arch/sparc/kernel/trampoline_64.S +++ b/arch/sparc/kernel/trampoline_64.S @@ -109,10 +109,13 @@ startup_continue: brnz,pn %g1, 1b nop - sethi %hi(p1275buf), %g2 - or %g2, %lo(p1275buf), %g2 - ldx [%g2 + 0x10], %l2 - add %l2, -(192 + 128), %sp + /* Get onto temporary stack which will be in the locked + * kernel image. + */ + sethi %hi(tramp_stack), %g1 + or %g1, %lo(tramp_stack), %g1 + add %g1, TRAMP_STACK_SIZE, %g1 + sub %g1, STACKFRAME_SZ + STACK_BIAS + 256, %sp flushw /* Setup the loop variables: @@ -394,7 +397,6 @@ after_lock_tlb: sllx %g5, THREAD_SHIFT, %g5 sub %g5, (STACKFRAME_SZ + STACK_BIAS), %g5 add %g6, %g5, %sp - mov 0, %fp rdpr %pstate, %o1 or %o1, PSTATE_IE, %o1 diff --git a/arch/sparc/mm/gup.c b/arch/sparc/mm/gup.c index 1aed0432c64b..ae6ce383d4df 100644 --- a/arch/sparc/mm/gup.c +++ b/arch/sparc/mm/gup.c @@ -160,6 +160,36 @@ static int gup_pud_range(pgd_t pgd, unsigned long addr, unsigned long end, return 1; } +int __get_user_pages_fast(unsigned long start, int nr_pages, int write, + struct page **pages) +{ + struct mm_struct *mm = current->mm; + unsigned long addr, len, end; + unsigned long next, flags; + pgd_t *pgdp; + int nr = 0; + + start &= PAGE_MASK; + addr = start; + len = (unsigned long) nr_pages << PAGE_SHIFT; + end = start + len; + + local_irq_save(flags); + pgdp = pgd_offset(mm, addr); + do { + pgd_t pgd = *pgdp; + + next = pgd_addr_end(addr, end); + if (pgd_none(pgd)) + break; + if (!gup_pud_range(pgd, addr, next, write, pages, &nr)) + break; + } while (pgdp++, addr = next, addr != end); + local_irq_restore(flags); + + return nr; +} + int get_user_pages_fast(unsigned long start, int nr_pages, int write, struct page **pages) { diff --git a/arch/sparc/prom/cif.S b/arch/sparc/prom/cif.S index 9c86b4b7d429..8050f381f518 100644 --- a/arch/sparc/prom/cif.S +++ b/arch/sparc/prom/cif.S @@ -11,11 +11,10 @@ .text .globl prom_cif_direct prom_cif_direct: + save %sp, -192, %sp sethi %hi(p1275buf), %o1 or %o1, %lo(p1275buf), %o1 - ldx [%o1 + 0x0010], %o2 ! prom_cif_stack - save %o2, -192, %sp - ldx [%i1 + 0x0008], %l2 ! prom_cif_handler + ldx [%o1 + 0x0008], %l2 ! prom_cif_handler mov %g4, %l0 mov %g5, %l1 mov %g6, %l3 diff --git a/arch/sparc/prom/init_64.c b/arch/sparc/prom/init_64.c index d95db755828f..110b0d78b864 100644 --- a/arch/sparc/prom/init_64.c +++ b/arch/sparc/prom/init_64.c @@ -26,13 +26,13 @@ phandle prom_chosen_node; * It gets passed the pointer to the PROM vector. */ -extern void prom_cif_init(void *, void *); +extern void prom_cif_init(void *); -void __init prom_init(void *cif_handler, void *cif_stack) +void __init prom_init(void *cif_handler) { phandle node; - prom_cif_init(cif_handler, cif_stack); + prom_cif_init(cif_handler); prom_chosen_node = prom_finddevice(prom_chosen_path); if (!prom_chosen_node || (s32)prom_chosen_node == -1) diff --git a/arch/sparc/prom/p1275.c b/arch/sparc/prom/p1275.c index b2340f008ae0..545d8bb79b65 100644 --- a/arch/sparc/prom/p1275.c +++ b/arch/sparc/prom/p1275.c @@ -20,7 +20,6 @@ struct { long prom_callback; /* 0x00 */ void (*prom_cif_handler)(long *); /* 0x08 */ - unsigned long prom_cif_stack; /* 0x10 */ } p1275buf; extern void prom_world(int); @@ -52,5 +51,4 @@ void p1275_cmd_direct(unsigned long *args) void prom_cif_init(void *cif_handler, void *cif_stack) { p1275buf.prom_cif_handler = (void (*)(long *))cif_handler; - p1275buf.prom_cif_stack = (unsigned long)cif_stack; } diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c index de8eebd6f67c..1acf605a646d 100644 --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -330,8 +330,10 @@ __setup_efi_pci32(efi_pci_io_protocol_32 *pci, struct pci_setup_rom **__rom) size = pci->romsize + sizeof(*rom); status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to alloc mem for rom\n"); return status; + } memset(rom, 0, sizeof(*rom)); @@ -344,14 +346,18 @@ __setup_efi_pci32(efi_pci_io_protocol_32 *pci, struct pci_setup_rom **__rom) status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, PCI_VENDOR_ID, 1, &(rom->vendor)); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to read rom->vendor\n"); goto free_struct; + } status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, PCI_DEVICE_ID, 1, &(rom->devid)); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to read rom->devid\n"); goto free_struct; + } status = efi_early->call(pci->get_location, pci, &(rom->segment), &(rom->bus), &(rom->device), &(rom->function)); @@ -432,8 +438,10 @@ __setup_efi_pci64(efi_pci_io_protocol_64 *pci, struct pci_setup_rom **__rom) size = pci->romsize + sizeof(*rom); status = efi_call_early(allocate_pool, EFI_LOADER_DATA, size, &rom); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to alloc mem for rom\n"); return status; + } rom->data.type = SETUP_PCI; rom->data.len = size - sizeof(struct setup_data); @@ -444,14 +452,18 @@ __setup_efi_pci64(efi_pci_io_protocol_64 *pci, struct pci_setup_rom **__rom) status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, PCI_VENDOR_ID, 1, &(rom->vendor)); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to read rom->vendor\n"); goto free_struct; + } status = efi_early->call(pci->pci.read, pci, EfiPciIoWidthUint16, PCI_DEVICE_ID, 1, &(rom->devid)); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to read rom->devid\n"); goto free_struct; + } status = efi_early->call(pci->get_location, pci, &(rom->segment), &(rom->bus), &(rom->device), &(rom->function)); @@ -538,8 +550,10 @@ static void setup_efi_pci(struct boot_params *params) EFI_LOADER_DATA, size, (void **)&pci_handle); - if (status != EFI_SUCCESS) + if (status != EFI_SUCCESS) { + efi_printk(sys_table, "Failed to alloc mem for pci_handle\n"); return; + } status = efi_call_early(locate_handle, EFI_LOCATE_BY_PROTOCOL, &pci_proto, @@ -1105,6 +1119,10 @@ struct boot_params *make_boot_params(struct efi_config *c) memset(sdt, 0, sizeof(*sdt)); + status = efi_parse_options(cmdline_ptr); + if (status != EFI_SUCCESS) + goto fail2; + status = handle_cmdline_files(sys_table, image, (char *)(unsigned long)hdr->cmd_line_ptr, "initrd=", hdr->initrd_addr_max, diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h index 0ec241ede5a2..9b11757975d0 100644 --- a/arch/x86/include/asm/efi.h +++ b/arch/x86/include/asm/efi.h @@ -81,24 +81,23 @@ extern u64 asmlinkage efi_call(void *fp, ...); */ #define __efi_call_virt(f, args...) efi_call_virt(f, args) -extern void __iomem *efi_ioremap(unsigned long addr, unsigned long size, - u32 type, u64 attribute); +extern void __iomem *__init efi_ioremap(unsigned long addr, unsigned long size, + u32 type, u64 attribute); #endif /* CONFIG_X86_32 */ -extern int add_efi_memmap; extern struct efi_scratch efi_scratch; -extern void efi_set_executable(efi_memory_desc_t *md, bool executable); -extern int efi_memblock_x86_reserve_range(void); -extern void efi_call_phys_prelog(void); -extern void efi_call_phys_epilog(void); -extern void efi_unmap_memmap(void); -extern void efi_memory_uc(u64 addr, unsigned long size); +extern void __init efi_set_executable(efi_memory_desc_t *md, bool executable); +extern int __init efi_memblock_x86_reserve_range(void); +extern void __init efi_call_phys_prolog(void); +extern void __init efi_call_phys_epilog(void); +extern void __init efi_unmap_memmap(void); +extern void __init efi_memory_uc(u64 addr, unsigned long size); extern void __init efi_map_region(efi_memory_desc_t *md); extern void __init efi_map_region_fixed(efi_memory_desc_t *md); extern void efi_sync_low_kernel_mappings(void); -extern int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages); -extern void efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages); +extern int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages); +extern void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages); extern void __init old_map_region(efi_memory_desc_t *md); extern void __init runtime_code_page_mkexec(void); extern void __init efi_runtime_mkexec(void); @@ -162,16 +161,6 @@ static inline efi_status_t efi_thunk_set_virtual_address_map( extern bool efi_reboot_required(void); #else -/* - * IF EFI is not configured, have the EFI calls return -ENOSYS. - */ -#define efi_call0(_f) (-ENOSYS) -#define efi_call1(_f, _a1) (-ENOSYS) -#define efi_call2(_f, _a1, _a2) (-ENOSYS) -#define efi_call3(_f, _a1, _a2, _a3) (-ENOSYS) -#define efi_call4(_f, _a1, _a2, _a3, _a4) (-ENOSYS) -#define efi_call5(_f, _a1, _a2, _a3, _a4, _a5) (-ENOSYS) -#define efi_call6(_f, _a1, _a2, _a3, _a4, _a5, _a6) (-ENOSYS) static inline void parse_efi_setup(u64 phys_addr, u32 data_len) {} static inline bool efi_reboot_required(void) { diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 7d603a71ab3a..6ed0c30d6a0c 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -989,6 +989,20 @@ static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code) kvm_queue_exception_e(vcpu, GP_VECTOR, error_code); } +static inline u64 get_canonical(u64 la) +{ + return ((int64_t)la << 16) >> 16; +} + +static inline bool is_noncanonical_address(u64 la) +{ +#ifdef CONFIG_X86_64 + return get_canonical(la) != la; +#else + return false; +#endif +} + #define TSS_IOPB_BASE_OFFSET 0x66 #define TSS_BASE_SIZE 0x68 #define TSS_IOPB_SIZE (65536 / 8) @@ -1050,7 +1064,7 @@ void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm, unsigned long address); void kvm_define_shared_msr(unsigned index, u32 msr); -void kvm_set_shared_msr(unsigned index, u64 val, u64 mask); +int kvm_set_shared_msr(unsigned index, u64 val, u64 mask); bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip); diff --git a/arch/x86/include/uapi/asm/vmx.h b/arch/x86/include/uapi/asm/vmx.h index 0e79420376eb..990a2fe1588d 100644 --- a/arch/x86/include/uapi/asm/vmx.h +++ b/arch/x86/include/uapi/asm/vmx.h @@ -67,6 +67,7 @@ #define EXIT_REASON_EPT_MISCONFIG 49 #define EXIT_REASON_INVEPT 50 #define EXIT_REASON_PREEMPTION_TIMER 52 +#define EXIT_REASON_INVVPID 53 #define EXIT_REASON_WBINVD 54 #define EXIT_REASON_XSETBV 55 #define EXIT_REASON_APIC_WRITE 56 @@ -114,6 +115,7 @@ { EXIT_REASON_EOI_INDUCED, "EOI_INDUCED" }, \ { EXIT_REASON_INVALID_STATE, "INVALID_STATE" }, \ { EXIT_REASON_INVD, "INVD" }, \ + { EXIT_REASON_INVVPID, "INVVPID" }, \ { EXIT_REASON_INVPCID, "INVPCID" } #endif /* _UAPIVMX_H */ diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index a46207a05835..749f9fa38254 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -504,11 +504,6 @@ static void rsp_increment(struct x86_emulate_ctxt *ctxt, int inc) masked_increment(reg_rmw(ctxt, VCPU_REGS_RSP), stack_mask(ctxt), inc); } -static inline void jmp_rel(struct x86_emulate_ctxt *ctxt, int rel) -{ - register_address_increment(ctxt, &ctxt->_eip, rel); -} - static u32 desc_limit_scaled(struct desc_struct *desc) { u32 limit = get_desc_limit(desc); @@ -569,6 +564,38 @@ static int emulate_nm(struct x86_emulate_ctxt *ctxt) return emulate_exception(ctxt, NM_VECTOR, 0, false); } +static inline int assign_eip_far(struct x86_emulate_ctxt *ctxt, ulong dst, + int cs_l) +{ + switch (ctxt->op_bytes) { + case 2: + ctxt->_eip = (u16)dst; + break; + case 4: + ctxt->_eip = (u32)dst; + break; + case 8: + if ((cs_l && is_noncanonical_address(dst)) || + (!cs_l && (dst & ~(u32)-1))) + return emulate_gp(ctxt, 0); + ctxt->_eip = dst; + break; + default: + WARN(1, "unsupported eip assignment size\n"); + } + return X86EMUL_CONTINUE; +} + +static inline int assign_eip_near(struct x86_emulate_ctxt *ctxt, ulong dst) +{ + return assign_eip_far(ctxt, dst, ctxt->mode == X86EMUL_MODE_PROT64); +} + +static inline int jmp_rel(struct x86_emulate_ctxt *ctxt, int rel) +{ + return assign_eip_near(ctxt, ctxt->_eip + rel); +} + static u16 get_segment_selector(struct x86_emulate_ctxt *ctxt, unsigned seg) { u16 selector; @@ -751,8 +778,10 @@ static int __do_insn_fetch_bytes(struct x86_emulate_ctxt *ctxt, int op_size) static __always_inline int do_insn_fetch_bytes(struct x86_emulate_ctxt *ctxt, unsigned size) { - if (unlikely(ctxt->fetch.end - ctxt->fetch.ptr < size)) - return __do_insn_fetch_bytes(ctxt, size); + unsigned done_size = ctxt->fetch.end - ctxt->fetch.ptr; + + if (unlikely(done_size < size)) + return __do_insn_fetch_bytes(ctxt, size - done_size); else return X86EMUL_CONTINUE; } @@ -1416,7 +1445,9 @@ static int write_segment_descriptor(struct x86_emulate_ctxt *ctxt, /* Does not support long mode */ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt, - u16 selector, int seg, u8 cpl, bool in_task_switch) + u16 selector, int seg, u8 cpl, + bool in_task_switch, + struct desc_struct *desc) { struct desc_struct seg_desc, old_desc; u8 dpl, rpl; @@ -1557,6 +1588,8 @@ static int __load_segment_descriptor(struct x86_emulate_ctxt *ctxt, } load: ctxt->ops->set_segment(ctxt, selector, &seg_desc, base3, seg); + if (desc) + *desc = seg_desc; return X86EMUL_CONTINUE; exception: return emulate_exception(ctxt, err_vec, err_code, true); @@ -1566,7 +1599,7 @@ static int load_segment_descriptor(struct x86_emulate_ctxt *ctxt, u16 selector, int seg) { u8 cpl = ctxt->ops->cpl(ctxt); - return __load_segment_descriptor(ctxt, selector, seg, cpl, false); + return __load_segment_descriptor(ctxt, selector, seg, cpl, false, NULL); } static void write_register_operand(struct operand *op) @@ -1960,17 +1993,31 @@ static int em_iret(struct x86_emulate_ctxt *ctxt) static int em_jmp_far(struct x86_emulate_ctxt *ctxt) { int rc; - unsigned short sel; + unsigned short sel, old_sel; + struct desc_struct old_desc, new_desc; + const struct x86_emulate_ops *ops = ctxt->ops; + u8 cpl = ctxt->ops->cpl(ctxt); + + /* Assignment of RIP may only fail in 64-bit mode */ + if (ctxt->mode == X86EMUL_MODE_PROT64) + ops->get_segment(ctxt, &old_sel, &old_desc, NULL, + VCPU_SREG_CS); memcpy(&sel, ctxt->src.valptr + ctxt->op_bytes, 2); - rc = load_segment_descriptor(ctxt, sel, VCPU_SREG_CS); + rc = __load_segment_descriptor(ctxt, sel, VCPU_SREG_CS, cpl, false, + &new_desc); if (rc != X86EMUL_CONTINUE) return rc; - ctxt->_eip = 0; - memcpy(&ctxt->_eip, ctxt->src.valptr, ctxt->op_bytes); - return X86EMUL_CONTINUE; + rc = assign_eip_far(ctxt, ctxt->src.val, new_desc.l); + if (rc != X86EMUL_CONTINUE) { + WARN_ON(!ctxt->mode != X86EMUL_MODE_PROT64); + /* assigning eip failed; restore the old cs */ + ops->set_segment(ctxt, old_sel, &old_desc, 0, VCPU_SREG_CS); + return rc; + } + return rc; } static int em_grp45(struct x86_emulate_ctxt *ctxt) @@ -1981,13 +2028,15 @@ static int em_grp45(struct x86_emulate_ctxt *ctxt) case 2: /* call near abs */ { long int old_eip; old_eip = ctxt->_eip; - ctxt->_eip = ctxt->src.val; + rc = assign_eip_near(ctxt, ctxt->src.val); + if (rc != X86EMUL_CONTINUE) + break; ctxt->src.val = old_eip; rc = em_push(ctxt); break; } case 4: /* jmp abs */ - ctxt->_eip = ctxt->src.val; + rc = assign_eip_near(ctxt, ctxt->src.val); break; case 5: /* jmp far */ rc = em_jmp_far(ctxt); @@ -2022,30 +2071,47 @@ static int em_cmpxchg8b(struct x86_emulate_ctxt *ctxt) static int em_ret(struct x86_emulate_ctxt *ctxt) { - ctxt->dst.type = OP_REG; - ctxt->dst.addr.reg = &ctxt->_eip; - ctxt->dst.bytes = ctxt->op_bytes; - return em_pop(ctxt); + int rc; + unsigned long eip; + + rc = emulate_pop(ctxt, &eip, ctxt->op_bytes); + if (rc != X86EMUL_CONTINUE) + return rc; + + return assign_eip_near(ctxt, eip); } static int em_ret_far(struct x86_emulate_ctxt *ctxt) { int rc; - unsigned long cs; + unsigned long eip, cs; + u16 old_cs; int cpl = ctxt->ops->cpl(ctxt); + struct desc_struct old_desc, new_desc; + const struct x86_emulate_ops *ops = ctxt->ops; - rc = emulate_pop(ctxt, &ctxt->_eip, ctxt->op_bytes); + if (ctxt->mode == X86EMUL_MODE_PROT64) + ops->get_segment(ctxt, &old_cs, &old_desc, NULL, + VCPU_SREG_CS); + + rc = emulate_pop(ctxt, &eip, ctxt->op_bytes); if (rc != X86EMUL_CONTINUE) return rc; - if (ctxt->op_bytes == 4) - ctxt->_eip = (u32)ctxt->_eip; rc = emulate_pop(ctxt, &cs, ctxt->op_bytes); if (rc != X86EMUL_CONTINUE) return rc; /* Outer-privilege level return is not implemented */ if (ctxt->mode >= X86EMUL_MODE_PROT16 && (cs & 3) > cpl) return X86EMUL_UNHANDLEABLE; - rc = load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS); + rc = __load_segment_descriptor(ctxt, (u16)cs, VCPU_SREG_CS, 0, false, + &new_desc); + if (rc != X86EMUL_CONTINUE) + return rc; + rc = assign_eip_far(ctxt, eip, new_desc.l); + if (rc != X86EMUL_CONTINUE) { + WARN_ON(!ctxt->mode != X86EMUL_MODE_PROT64); + ops->set_segment(ctxt, old_cs, &old_desc, 0, VCPU_SREG_CS); + } return rc; } @@ -2306,7 +2372,7 @@ static int em_sysexit(struct x86_emulate_ctxt *ctxt) { const struct x86_emulate_ops *ops = ctxt->ops; struct desc_struct cs, ss; - u64 msr_data; + u64 msr_data, rcx, rdx; int usermode; u16 cs_sel = 0, ss_sel = 0; @@ -2322,6 +2388,9 @@ static int em_sysexit(struct x86_emulate_ctxt *ctxt) else usermode = X86EMUL_MODE_PROT32; + rcx = reg_read(ctxt, VCPU_REGS_RCX); + rdx = reg_read(ctxt, VCPU_REGS_RDX); + cs.dpl = 3; ss.dpl = 3; ops->get_msr(ctxt, MSR_IA32_SYSENTER_CS, &msr_data); @@ -2339,6 +2408,9 @@ static int em_sysexit(struct x86_emulate_ctxt *ctxt) ss_sel = cs_sel + 8; cs.d = 0; cs.l = 1; + if (is_noncanonical_address(rcx) || + is_noncanonical_address(rdx)) + return emulate_gp(ctxt, 0); break; } cs_sel |= SELECTOR_RPL_MASK; @@ -2347,8 +2419,8 @@ static int em_sysexit(struct x86_emulate_ctxt *ctxt) ops->set_segment(ctxt, cs_sel, &cs, 0, VCPU_SREG_CS); ops->set_segment(ctxt, ss_sel, &ss, 0, VCPU_SREG_SS); - ctxt->_eip = reg_read(ctxt, VCPU_REGS_RDX); - *reg_write(ctxt, VCPU_REGS_RSP) = reg_read(ctxt, VCPU_REGS_RCX); + ctxt->_eip = rdx; + *reg_write(ctxt, VCPU_REGS_RSP) = rcx; return X86EMUL_CONTINUE; } @@ -2466,19 +2538,24 @@ static int load_state_from_tss16(struct x86_emulate_ctxt *ctxt, * Now load segment descriptors. If fault happens at this stage * it is handled in a context of new task */ - ret = __load_segment_descriptor(ctxt, tss->ldt, VCPU_SREG_LDTR, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ldt, VCPU_SREG_LDTR, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; @@ -2603,25 +2680,32 @@ static int load_state_from_tss32(struct x86_emulate_ctxt *ctxt, * Now load segment descriptors. If fault happenes at this stage * it is handled in a context of new task */ - ret = __load_segment_descriptor(ctxt, tss->ldt_selector, VCPU_SREG_LDTR, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ldt_selector, VCPU_SREG_LDTR, + cpl, true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->es, VCPU_SREG_ES, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->cs, VCPU_SREG_CS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ss, VCPU_SREG_SS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->ds, VCPU_SREG_DS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->fs, VCPU_SREG_FS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->fs, VCPU_SREG_FS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; - ret = __load_segment_descriptor(ctxt, tss->gs, VCPU_SREG_GS, cpl, true); + ret = __load_segment_descriptor(ctxt, tss->gs, VCPU_SREG_GS, cpl, + true, NULL); if (ret != X86EMUL_CONTINUE) return ret; @@ -2888,10 +2972,13 @@ static int em_aad(struct x86_emulate_ctxt *ctxt) static int em_call(struct x86_emulate_ctxt *ctxt) { + int rc; long rel = ctxt->src.val; ctxt->src.val = (unsigned long)ctxt->_eip; - jmp_rel(ctxt, rel); + rc = jmp_rel(ctxt, rel); + if (rc != X86EMUL_CONTINUE) + return rc; return em_push(ctxt); } @@ -2900,34 +2987,50 @@ static int em_call_far(struct x86_emulate_ctxt *ctxt) u16 sel, old_cs; ulong old_eip; int rc; + struct desc_struct old_desc, new_desc; + const struct x86_emulate_ops *ops = ctxt->ops; + int cpl = ctxt->ops->cpl(ctxt); - old_cs = get_segment_selector(ctxt, VCPU_SREG_CS); old_eip = ctxt->_eip; + ops->get_segment(ctxt, &old_cs, &old_desc, NULL, VCPU_SREG_CS); memcpy(&sel, ctxt->src.valptr + ctxt->op_bytes, 2); - if (load_segment_descriptor(ctxt, sel, VCPU_SREG_CS)) + rc = __load_segment_descriptor(ctxt, sel, VCPU_SREG_CS, cpl, false, + &new_desc); + if (rc != X86EMUL_CONTINUE) return X86EMUL_CONTINUE; - ctxt->_eip = 0; - memcpy(&ctxt->_eip, ctxt->src.valptr, ctxt->op_bytes); + rc = assign_eip_far(ctxt, ctxt->src.val, new_desc.l); + if (rc != X86EMUL_CONTINUE) + goto fail; ctxt->src.val = old_cs; rc = em_push(ctxt); if (rc != X86EMUL_CONTINUE) - return rc; + goto fail; ctxt->src.val = old_eip; - return em_push(ctxt); + rc = em_push(ctxt); + /* If we failed, we tainted the memory, but the very least we should + restore cs */ + if (rc != X86EMUL_CONTINUE) + goto fail; + return rc; +fail: + ops->set_segment(ctxt, old_cs, &old_desc, 0, VCPU_SREG_CS); + return rc; + } static int em_ret_near_imm(struct x86_emulate_ctxt *ctxt) { int rc; + unsigned long eip; - ctxt->dst.type = OP_REG; - ctxt->dst.addr.reg = &ctxt->_eip; - ctxt->dst.bytes = ctxt->op_bytes; - rc = emulate_pop(ctxt, &ctxt->dst.val, ctxt->op_bytes); + rc = emulate_pop(ctxt, &eip, ctxt->op_bytes); + if (rc != X86EMUL_CONTINUE) + return rc; + rc = assign_eip_near(ctxt, eip); if (rc != X86EMUL_CONTINUE) return rc; rsp_increment(ctxt, ctxt->src.val); @@ -3254,20 +3357,24 @@ static int em_lmsw(struct x86_emulate_ctxt *ctxt) static int em_loop(struct x86_emulate_ctxt *ctxt) { + int rc = X86EMUL_CONTINUE; + register_address_increment(ctxt, reg_rmw(ctxt, VCPU_REGS_RCX), -1); if ((address_mask(ctxt, reg_read(ctxt, VCPU_REGS_RCX)) != 0) && (ctxt->b == 0xe2 || test_cc(ctxt->b ^ 0x5, ctxt->eflags))) - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); - return X86EMUL_CONTINUE; + return rc; } static int em_jcxz(struct x86_emulate_ctxt *ctxt) { + int rc = X86EMUL_CONTINUE; + if (address_mask(ctxt, reg_read(ctxt, VCPU_REGS_RCX)) == 0) - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); - return X86EMUL_CONTINUE; + return rc; } static int em_in(struct x86_emulate_ctxt *ctxt) @@ -3355,6 +3462,12 @@ static int em_bswap(struct x86_emulate_ctxt *ctxt) return X86EMUL_CONTINUE; } +static int em_clflush(struct x86_emulate_ctxt *ctxt) +{ + /* emulating clflush regardless of cpuid */ + return X86EMUL_CONTINUE; +} + static bool valid_cr(int nr) { switch (nr) { @@ -3693,6 +3806,16 @@ static const struct opcode group11[] = { X7(D(Undefined)), }; +static const struct gprefix pfx_0f_ae_7 = { + I(SrcMem | ByteOp, em_clflush), N, N, N, +}; + +static const struct group_dual group15 = { { + N, N, N, N, N, N, N, GP(0, &pfx_0f_ae_7), +}, { + N, N, N, N, N, N, N, N, +} }; + static const struct gprefix pfx_0f_6f_0f_7f = { I(Mmx, em_mov), I(Sse | Aligned, em_mov), N, I(Sse | Unaligned, em_mov), }; @@ -3901,10 +4024,11 @@ static const struct opcode twobyte_table[256] = { N, I(ImplicitOps | EmulateOnUD, em_syscall), II(ImplicitOps | Priv, em_clts, clts), N, DI(ImplicitOps | Priv, invd), DI(ImplicitOps | Priv, wbinvd), N, N, - N, D(ImplicitOps | ModRM), N, N, + N, D(ImplicitOps | ModRM | SrcMem | NoAccess), N, N, /* 0x10 - 0x1F */ N, N, N, N, N, N, N, N, - D(ImplicitOps | ModRM), N, N, N, N, N, N, D(ImplicitOps | ModRM), + D(ImplicitOps | ModRM | SrcMem | NoAccess), + N, N, N, N, N, N, D(ImplicitOps | ModRM | SrcMem | NoAccess), /* 0x20 - 0x2F */ DIP(ModRM | DstMem | Priv | Op3264 | NoMod, cr_read, check_cr_read), DIP(ModRM | DstMem | Priv | Op3264 | NoMod, dr_read, check_dr_read), @@ -3956,7 +4080,7 @@ static const struct opcode twobyte_table[256] = { F(DstMem | SrcReg | ModRM | BitOp | Lock | PageTable, em_bts), F(DstMem | SrcReg | Src2ImmByte | ModRM, em_shrd), F(DstMem | SrcReg | Src2CL | ModRM, em_shrd), - D(ModRM), F(DstReg | SrcMem | ModRM, em_imul), + GD(0, &group15), F(DstReg | SrcMem | ModRM, em_imul), /* 0xB0 - 0xB7 */ I2bv(DstMem | SrcReg | ModRM | Lock | PageTable, em_cmpxchg), I(DstReg | SrcMemFAddr | ModRM | Src2SS, em_lseg), @@ -4473,10 +4597,10 @@ done_prefixes: /* Decode and fetch the destination operand: register or memory. */ rc = decode_operand(ctxt, &ctxt->dst, (ctxt->d >> DstShift) & OpMask); -done: if (ctxt->rip_relative) ctxt->memopp->addr.mem.ea += ctxt->_eip; +done: return (rc != X86EMUL_CONTINUE) ? EMULATION_FAILED : EMULATION_OK; } @@ -4726,7 +4850,7 @@ special_insn: break; case 0x70 ... 0x7f: /* jcc (short) */ if (test_cc(ctxt->b, ctxt->eflags)) - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); break; case 0x8d: /* lea r16/r32, m */ ctxt->dst.val = ctxt->src.addr.mem.ea; @@ -4756,7 +4880,7 @@ special_insn: break; case 0xe9: /* jmp rel */ case 0xeb: /* jmp rel short */ - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); ctxt->dst.type = OP_NONE; /* Disable writeback. */ break; case 0xf4: /* hlt */ @@ -4881,13 +5005,11 @@ twobyte_insn: break; case 0x80 ... 0x8f: /* jnz rel, etc*/ if (test_cc(ctxt->b, ctxt->eflags)) - jmp_rel(ctxt, ctxt->src.val); + rc = jmp_rel(ctxt, ctxt->src.val); break; case 0x90 ... 0x9f: /* setcc r/m8 */ ctxt->dst.val = test_cc(ctxt->b, ctxt->eflags); break; - case 0xae: /* clflush */ - break; case 0xb6 ... 0xb7: /* movzx */ ctxt->dst.bytes = ctxt->op_bytes; ctxt->dst.val = (ctxt->src.bytes == 1) ? (u8) ctxt->src.val diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index 518d86471b76..298781d4cfb4 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c @@ -262,8 +262,10 @@ void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu) return; timer = &pit->pit_state.timer; + mutex_lock(&pit->pit_state.lock); if (hrtimer_cancel(timer)) hrtimer_start_expires(timer, HRTIMER_MODE_ABS); + mutex_unlock(&pit->pit_state.lock); } static void destroy_pit_timer(struct kvm_pit *pit) diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 806d58e3c320..fd49c867b25a 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -298,7 +298,7 @@ retry_walk: } #endif walker->max_level = walker->level; - ASSERT(!is_long_mode(vcpu) && is_pae(vcpu)); + ASSERT(!(is_long_mode(vcpu) && !is_pae(vcpu))); accessed_dirty = PT_GUEST_ACCESSED_MASK; pt_access = pte_access = ACC_ALL; diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 65510f624dfe..7527cefc5a43 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3251,7 +3251,7 @@ static int wrmsr_interception(struct vcpu_svm *svm) msr.host_initiated = false; svm->next_rip = kvm_rip_read(&svm->vcpu) + 2; - if (svm_set_msr(&svm->vcpu, &msr)) { + if (kvm_set_msr(&svm->vcpu, &msr)) { trace_kvm_msr_write_ex(ecx, data); kvm_inject_gp(&svm->vcpu, 0); } else { @@ -3551,9 +3551,9 @@ static int handle_exit(struct kvm_vcpu *vcpu) if (exit_code >= ARRAY_SIZE(svm_exit_handlers) || !svm_exit_handlers[exit_code]) { - kvm_run->exit_reason = KVM_EXIT_UNKNOWN; - kvm_run->hw.hardware_exit_reason = exit_code; - return 0; + WARN_ONCE(1, "vmx: unexpected exit reason 0x%x\n", exit_code); + kvm_queue_exception(vcpu, UD_VECTOR); + return 1; } return svm_exit_handlers[exit_code](svm); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 0acac81f198b..a8b76c4c95e2 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2659,12 +2659,15 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) default: msr = find_msr_entry(vmx, msr_index); if (msr) { + u64 old_msr_data = msr->data; msr->data = data; if (msr - vmx->guest_msrs < vmx->save_nmsrs) { preempt_disable(); - kvm_set_shared_msr(msr->index, msr->data, - msr->mask); + ret = kvm_set_shared_msr(msr->index, msr->data, + msr->mask); preempt_enable(); + if (ret) + msr->data = old_msr_data; } break; } @@ -5291,7 +5294,7 @@ static int handle_wrmsr(struct kvm_vcpu *vcpu) msr.data = data; msr.index = ecx; msr.host_initiated = false; - if (vmx_set_msr(vcpu, &msr) != 0) { + if (kvm_set_msr(vcpu, &msr) != 0) { trace_kvm_msr_write_ex(ecx, data); kvm_inject_gp(vcpu, 0); return 1; @@ -6743,6 +6746,12 @@ static int handle_invept(struct kvm_vcpu *vcpu) return 1; } +static int handle_invvpid(struct kvm_vcpu *vcpu) +{ + kvm_queue_exception(vcpu, UD_VECTOR); + return 1; +} + /* * The exit handlers return 1 if the exit was handled fully and guest execution * may resume. Otherwise they set the kvm_run parameter to indicate what needs @@ -6788,6 +6797,7 @@ static int (*const kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu) = { [EXIT_REASON_MWAIT_INSTRUCTION] = handle_mwait, [EXIT_REASON_MONITOR_INSTRUCTION] = handle_monitor, [EXIT_REASON_INVEPT] = handle_invept, + [EXIT_REASON_INVVPID] = handle_invvpid, }; static const int kvm_vmx_max_exit_handlers = @@ -7023,7 +7033,7 @@ static bool nested_vmx_exit_handled(struct kvm_vcpu *vcpu) case EXIT_REASON_VMPTRST: case EXIT_REASON_VMREAD: case EXIT_REASON_VMRESUME: case EXIT_REASON_VMWRITE: case EXIT_REASON_VMOFF: case EXIT_REASON_VMON: - case EXIT_REASON_INVEPT: + case EXIT_REASON_INVEPT: case EXIT_REASON_INVVPID: /* * VMX instructions trap unconditionally. This allows L1 to * emulate them for its L2 guest, i.e., allows 3-level nesting! @@ -7164,10 +7174,10 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu) && kvm_vmx_exit_handlers[exit_reason]) return kvm_vmx_exit_handlers[exit_reason](vcpu); else { - vcpu->run->exit_reason = KVM_EXIT_UNKNOWN; - vcpu->run->hw.hardware_exit_reason = exit_reason; + WARN_ONCE(1, "vmx: unexpected exit reason 0x%x\n", exit_reason); + kvm_queue_exception(vcpu, UD_VECTOR); + return 1; } - return 0; } static void update_cr8_intercept(struct kvm_vcpu *vcpu, int tpr, int irr) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 34c8f94331f8..0033df32a745 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -229,20 +229,25 @@ static void kvm_shared_msr_cpu_online(void) shared_msr_update(i, shared_msrs_global.msrs[i]); } -void kvm_set_shared_msr(unsigned slot, u64 value, u64 mask) +int kvm_set_shared_msr(unsigned slot, u64 value, u64 mask) { unsigned int cpu = smp_processor_id(); struct kvm_shared_msrs *smsr = per_cpu_ptr(shared_msrs, cpu); + int err; if (((value ^ smsr->values[slot].curr) & mask) == 0) - return; + return 0; smsr->values[slot].curr = value; - wrmsrl(shared_msrs_global.msrs[slot], value); + err = wrmsrl_safe(shared_msrs_global.msrs[slot], value); + if (err) + return 1; + if (!smsr->registered) { smsr->urn.on_user_return = kvm_on_user_return; user_return_notifier_register(&smsr->urn); smsr->registered = true; } + return 0; } EXPORT_SYMBOL_GPL(kvm_set_shared_msr); @@ -987,7 +992,6 @@ void kvm_enable_efer_bits(u64 mask) } EXPORT_SYMBOL_GPL(kvm_enable_efer_bits); - /* * Writes msr value into into the appropriate "register". * Returns 0 on success, non-0 otherwise. @@ -995,8 +999,34 @@ EXPORT_SYMBOL_GPL(kvm_enable_efer_bits); */ int kvm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr) { + switch (msr->index) { + case MSR_FS_BASE: + case MSR_GS_BASE: + case MSR_KERNEL_GS_BASE: + case MSR_CSTAR: + case MSR_LSTAR: + if (is_noncanonical_address(msr->data)) + return 1; + break; + case MSR_IA32_SYSENTER_EIP: + case MSR_IA32_SYSENTER_ESP: + /* + * IA32_SYSENTER_ESP and IA32_SYSENTER_EIP cause #GP if + * non-canonical address is written on Intel but not on + * AMD (which ignores the top 32-bits, because it does + * not implement 64-bit SYSENTER). + * + * 64-bit code should hence be able to write a non-canonical + * value on AMD. Making the address canonical ensures that + * vmentry does not fail on Intel after writing a non-canonical + * value, and that something deterministic happens if the guest + * invokes 64-bit SYSENTER. + */ + msr->data = get_canonical(msr->data); + } return kvm_x86_ops->set_msr(vcpu, msr); } +EXPORT_SYMBOL_GPL(kvm_set_msr); /* * Adapt set_msr() to msr_io()'s calling convention diff --git a/arch/x86/platform/efi/efi-bgrt.c b/arch/x86/platform/efi/efi-bgrt.c index f15103dff4b4..d143d216d52b 100644 --- a/arch/x86/platform/efi/efi-bgrt.c +++ b/arch/x86/platform/efi/efi-bgrt.c @@ -40,20 +40,40 @@ void __init efi_bgrt_init(void) if (ACPI_FAILURE(status)) return; - if (bgrt_tab->header.length < sizeof(*bgrt_tab)) + if (bgrt_tab->header.length < sizeof(*bgrt_tab)) { + pr_err("Ignoring BGRT: invalid length %u (expected %zu)\n", + bgrt_tab->header.length, sizeof(*bgrt_tab)); return; - if (bgrt_tab->version != 1 || bgrt_tab->status != 1) + } + if (bgrt_tab->version != 1) { + pr_err("Ignoring BGRT: invalid version %u (expected 1)\n", + bgrt_tab->version); + return; + } + if (bgrt_tab->status != 1) { + pr_err("Ignoring BGRT: invalid status %u (expected 1)\n", + bgrt_tab->status); + return; + } + if (bgrt_tab->image_type != 0) { + pr_err("Ignoring BGRT: invalid image type %u (expected 0)\n", + bgrt_tab->image_type); return; - if (bgrt_tab->image_type != 0 || !bgrt_tab->image_address) + } + if (!bgrt_tab->image_address) { + pr_err("Ignoring BGRT: null image address\n"); return; + } image = efi_lookup_mapped_addr(bgrt_tab->image_address); if (!image) { image = early_memremap(bgrt_tab->image_address, sizeof(bmp_header)); ioremapped = true; - if (!image) + if (!image) { + pr_err("Ignoring BGRT: failed to map image header memory\n"); return; + } } memcpy_fromio(&bmp_header, image, sizeof(bmp_header)); @@ -61,14 +81,18 @@ void __init efi_bgrt_init(void) early_iounmap(image, sizeof(bmp_header)); bgrt_image_size = bmp_header.size; - bgrt_image = kmalloc(bgrt_image_size, GFP_KERNEL); - if (!bgrt_image) + bgrt_image = kmalloc(bgrt_image_size, GFP_KERNEL | __GFP_NOWARN); + if (!bgrt_image) { + pr_err("Ignoring BGRT: failed to allocate memory for image (wanted %zu bytes)\n", + bgrt_image_size); return; + } if (ioremapped) { image = early_memremap(bgrt_tab->image_address, bmp_header.size); if (!image) { + pr_err("Ignoring BGRT: failed to map image memory\n"); kfree(bgrt_image); bgrt_image = NULL; return; diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 850da94fef30..dbc8627a5cdf 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -70,17 +70,7 @@ static efi_config_table_type_t arch_tables[] __initdata = { u64 efi_setup; /* efi setup_data physical address */ -static bool disable_runtime __initdata = false; -static int __init setup_noefi(char *arg) -{ - disable_runtime = true; - return 0; -} -early_param("noefi", setup_noefi); - -int add_efi_memmap; -EXPORT_SYMBOL(add_efi_memmap); - +static int add_efi_memmap __initdata; static int __init setup_add_efi_memmap(char *arg) { add_efi_memmap = 1; @@ -96,7 +86,7 @@ static efi_status_t __init phys_efi_set_virtual_address_map( { efi_status_t status; - efi_call_phys_prelog(); + efi_call_phys_prolog(); status = efi_call_phys(efi_phys.set_virtual_address_map, memory_map_size, descriptor_size, descriptor_version, virtual_map); @@ -210,9 +200,12 @@ static void __init print_efi_memmap(void) for (p = memmap.map, i = 0; p < memmap.map_end; p += memmap.desc_size, i++) { + char buf[64]; + md = p; - pr_info("mem%02u: type=%u, attr=0x%llx, range=[0x%016llx-0x%016llx) (%lluMB)\n", - i, md->type, md->attribute, md->phys_addr, + pr_info("mem%02u: %s range=[0x%016llx-0x%016llx) (%lluMB)\n", + i, efi_md_typeattr_format(buf, sizeof(buf), md), + md->phys_addr, md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT), (md->num_pages >> (20 - EFI_PAGE_SHIFT))); } @@ -344,9 +337,9 @@ static int __init efi_runtime_init32(void) } /* - * We will only need *early* access to the following two - * EFI runtime services before set_virtual_address_map - * is invoked. + * We will only need *early* access to the SetVirtualAddressMap + * EFI runtime service. All other runtime services will be called + * via the virtual mapping. */ efi_phys.set_virtual_address_map = (efi_set_virtual_address_map_t *) @@ -368,9 +361,9 @@ static int __init efi_runtime_init64(void) } /* - * We will only need *early* access to the following two - * EFI runtime services before set_virtual_address_map - * is invoked. + * We will only need *early* access to the SetVirtualAddressMap + * EFI runtime service. All other runtime services will be called + * via the virtual mapping. */ efi_phys.set_virtual_address_map = (efi_set_virtual_address_map_t *) @@ -492,7 +485,7 @@ void __init efi_init(void) if (!efi_runtime_supported()) pr_info("No EFI runtime due to 32/64-bit mismatch with kernel\n"); else { - if (disable_runtime || efi_runtime_init()) + if (efi_runtime_disabled() || efi_runtime_init()) return; } if (efi_memmap_init()) @@ -537,7 +530,7 @@ void __init runtime_code_page_mkexec(void) } } -void efi_memory_uc(u64 addr, unsigned long size) +void __init efi_memory_uc(u64 addr, unsigned long size) { unsigned long page_shift = 1UL << EFI_PAGE_SHIFT; u64 npages; @@ -732,6 +725,7 @@ static void __init kexec_enter_virtual_mode(void) */ if (!efi_is_native()) { efi_unmap_memmap(); + clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); return; } @@ -805,6 +799,7 @@ static void __init __efi_enter_virtual_mode(void) new_memmap = efi_map_regions(&count, &pg_shift); if (!new_memmap) { pr_err("Error reallocating memory, EFI runtime non-functional!\n"); + clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); return; } @@ -812,8 +807,10 @@ static void __init __efi_enter_virtual_mode(void) BUG_ON(!efi.systab); - if (efi_setup_page_tables(__pa(new_memmap), 1 << pg_shift)) + if (efi_setup_page_tables(__pa(new_memmap), 1 << pg_shift)) { + clear_bit(EFI_RUNTIME_SERVICES, &efi.flags); return; + } efi_sync_low_kernel_mappings(); efi_dump_pagetable(); @@ -938,14 +935,11 @@ u64 efi_mem_attributes(unsigned long phys_addr) return 0; } -static int __init parse_efi_cmdline(char *str) +static int __init arch_parse_efi_cmdline(char *str) { - if (*str == '=') - str++; - - if (!strncmp(str, "old_map", 7)) + if (parse_option_str(str, "old_map")) set_bit(EFI_OLD_MEMMAP, &efi.flags); return 0; } -early_param("efi", parse_efi_cmdline); +early_param("efi", arch_parse_efi_cmdline); diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c index 9ee3491e31fb..40e7cda52936 100644 --- a/arch/x86/platform/efi/efi_32.c +++ b/arch/x86/platform/efi/efi_32.c @@ -33,7 +33,7 @@ /* * To make EFI call EFI runtime service in physical addressing mode we need - * prelog/epilog before/after the invocation to disable interrupt, to + * prolog/epilog before/after the invocation to disable interrupt, to * claim EFI runtime service handler exclusively and to duplicate a memory in * low memory space say 0 - 3G. */ @@ -41,11 +41,13 @@ static unsigned long efi_rt_eflags; void efi_sync_low_kernel_mappings(void) {} void __init efi_dump_pagetable(void) {} -int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) +int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) { return 0; } -void efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) {} +void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) +{ +} void __init efi_map_region(efi_memory_desc_t *md) { @@ -55,7 +57,7 @@ void __init efi_map_region(efi_memory_desc_t *md) void __init efi_map_region_fixed(efi_memory_desc_t *md) {} void __init parse_efi_setup(u64 phys_addr, u32 data_len) {} -void efi_call_phys_prelog(void) +void __init efi_call_phys_prolog(void) { struct desc_ptr gdt_descr; @@ -69,7 +71,7 @@ void efi_call_phys_prelog(void) load_gdt(&gdt_descr); } -void efi_call_phys_epilog(void) +void __init efi_call_phys_epilog(void) { struct desc_ptr gdt_descr; diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 290d397e1dd9..35aecb6042fb 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -79,7 +79,7 @@ static void __init early_code_mapping_set_exec(int executable) } } -void __init efi_call_phys_prelog(void) +void __init efi_call_phys_prolog(void) { unsigned long vaddress; int pgd; @@ -139,7 +139,7 @@ void efi_sync_low_kernel_mappings(void) sizeof(pgd_t) * num_pgds); } -int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) +int __init efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) { unsigned long text; struct page *page; @@ -192,7 +192,7 @@ int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages) return 0; } -void efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) +void __init efi_cleanup_page_tables(unsigned long pa_memmap, unsigned num_pages) { pgd_t *pgd = (pgd_t *)__va(real_mode_header->trampoline_pgd); diff --git a/arch/x86/platform/efi/efi_stub_32.S b/arch/x86/platform/efi/efi_stub_32.S index fbe66e626c09..040192b50d02 100644 --- a/arch/x86/platform/efi/efi_stub_32.S +++ b/arch/x86/platform/efi/efi_stub_32.S @@ -27,13 +27,13 @@ ENTRY(efi_call_phys) * set to 0x0010, DS and SS have been set to 0x0018. In EFI, I found * the values of these registers are the same. And, the corresponding * GDT entries are identical. So I will do nothing about segment reg - * and GDT, but change GDT base register in prelog and epilog. + * and GDT, but change GDT base register in prolog and epilog. */ /* * 1. Now I am running with EIP = <physical address> + PAGE_OFFSET. * But to make it smoothly switch from virtual mode to flat mode. - * The mapping of lower virtual memory has been created in prelog and + * The mapping of lower virtual memory has been created in prolog and * epilog. */ movl $1f, %edx diff --git a/arch/x86/platform/intel-mid/intel_mid_weak_decls.h b/arch/x86/platform/intel-mid/intel_mid_weak_decls.h index 46aa25c8ce06..3c1c3866d82b 100644 --- a/arch/x86/platform/intel-mid/intel_mid_weak_decls.h +++ b/arch/x86/platform/intel-mid/intel_mid_weak_decls.h @@ -10,10 +10,9 @@ */ -/* __attribute__((weak)) makes these declarations overridable */ /* For every CPU addition a new get_<cpuname>_ops interface needs * to be added. */ -extern void *get_penwell_ops(void) __attribute__((weak)); -extern void *get_cloverview_ops(void) __attribute__((weak)); -extern void *get_tangier_ops(void) __attribute__((weak)); +extern void *get_penwell_ops(void); +extern void *get_cloverview_ops(void); +extern void *get_tangier_ops(void); diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 1a3f0445432a..fac5e4f9607c 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1636,9 +1636,6 @@ asmlinkage __visible void __init xen_start_kernel(void) xen_raw_console_write("mapping kernel into physical memory\n"); xen_setup_kernel_pagetable((pgd_t *)xen_start_info->pt_base, xen_start_info->nr_pages); - /* Allocate and initialize top and mid mfn levels for p2m structure */ - xen_build_mfn_list_list(); - /* keep using Xen gdt for now; no urgent need to change it */ #ifdef CONFIG_X86_32 diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index f62af7647ec9..a8a1a3d08d4d 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1217,10 +1217,13 @@ static void __init xen_pagetable_p2m_copy(void) static void __init xen_pagetable_init(void) { paging_init(); - xen_setup_shared_info(); #ifdef CONFIG_X86_64 xen_pagetable_p2m_copy(); #endif + /* Allocate and initialize top and mid mfn levels for p2m structure */ + xen_build_mfn_list_list(); + + xen_setup_shared_info(); xen_post_allocator_init(); } static void xen_write_cr2(unsigned long cr2) diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 9f5983b01ed9..b456b048eca9 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -163,6 +163,7 @@ #include <linux/hash.h> #include <linux/sched.h> #include <linux/seq_file.h> +#include <linux/bootmem.h> #include <asm/cache.h> #include <asm/setup.h> @@ -181,21 +182,20 @@ static void __init m2p_override_init(void); unsigned long xen_max_p2m_pfn __read_mostly; +static unsigned long *p2m_mid_missing_mfn; +static unsigned long *p2m_top_mfn; +static unsigned long **p2m_top_mfn_p; + /* Placeholders for holes in the address space */ static RESERVE_BRK_ARRAY(unsigned long, p2m_missing, P2M_PER_PAGE); static RESERVE_BRK_ARRAY(unsigned long *, p2m_mid_missing, P2M_MID_PER_PAGE); -static RESERVE_BRK_ARRAY(unsigned long, p2m_mid_missing_mfn, P2M_MID_PER_PAGE); static RESERVE_BRK_ARRAY(unsigned long **, p2m_top, P2M_TOP_PER_PAGE); -static RESERVE_BRK_ARRAY(unsigned long, p2m_top_mfn, P2M_TOP_PER_PAGE); -static RESERVE_BRK_ARRAY(unsigned long *, p2m_top_mfn_p, P2M_TOP_PER_PAGE); static RESERVE_BRK_ARRAY(unsigned long, p2m_identity, P2M_PER_PAGE); static RESERVE_BRK_ARRAY(unsigned long *, p2m_mid_identity, P2M_MID_PER_PAGE); -static RESERVE_BRK_ARRAY(unsigned long, p2m_mid_identity_mfn, P2M_MID_PER_PAGE); RESERVE_BRK(p2m_mid, PAGE_SIZE * (MAX_DOMAIN_PAGES / (P2M_PER_PAGE * P2M_MID_PER_PAGE))); -RESERVE_BRK(p2m_mid_mfn, PAGE_SIZE * (MAX_DOMAIN_PAGES / (P2M_PER_PAGE * P2M_MID_PER_PAGE))); /* For each I/O range remapped we may lose up to two leaf pages for the boundary * violations and three mid pages to cover up to 3GB. With @@ -272,11 +272,11 @@ static void p2m_init(unsigned long *p2m) * Build the parallel p2m_top_mfn and p2m_mid_mfn structures * * This is called both at boot time, and after resuming from suspend: - * - At boot time we're called very early, and must use extend_brk() + * - At boot time we're called rather early, and must use alloc_bootmem*() * to allocate memory. * * - After resume we're called from within stop_machine, but the mfn - * tree should alreay be completely allocated. + * tree should already be completely allocated. */ void __ref xen_build_mfn_list_list(void) { @@ -287,20 +287,17 @@ void __ref xen_build_mfn_list_list(void) /* Pre-initialize p2m_top_mfn to be completely missing */ if (p2m_top_mfn == NULL) { - p2m_mid_missing_mfn = extend_brk(PAGE_SIZE, PAGE_SIZE); + p2m_mid_missing_mfn = alloc_bootmem_align(PAGE_SIZE, PAGE_SIZE); p2m_mid_mfn_init(p2m_mid_missing_mfn, p2m_missing); - p2m_mid_identity_mfn = extend_brk(PAGE_SIZE, PAGE_SIZE); - p2m_mid_mfn_init(p2m_mid_identity_mfn, p2m_identity); - p2m_top_mfn_p = extend_brk(PAGE_SIZE, PAGE_SIZE); + p2m_top_mfn_p = alloc_bootmem_align(PAGE_SIZE, PAGE_SIZE); p2m_top_mfn_p_init(p2m_top_mfn_p); - p2m_top_mfn = extend_brk(PAGE_SIZE, PAGE_SIZE); + p2m_top_mfn = alloc_bootmem_align(PAGE_SIZE, PAGE_SIZE); p2m_top_mfn_init(p2m_top_mfn); } else { /* Reinitialise, mfn's all change after migration */ p2m_mid_mfn_init(p2m_mid_missing_mfn, p2m_missing); - p2m_mid_mfn_init(p2m_mid_identity_mfn, p2m_identity); } for (pfn = 0; pfn < xen_max_p2m_pfn; pfn += P2M_PER_PAGE) { @@ -328,10 +325,9 @@ void __ref xen_build_mfn_list_list(void) /* * XXX boot-time only! We should never find * missing parts of the mfn tree after - * runtime. extend_brk() will BUG if we call - * it too late. + * runtime. */ - mid_mfn_p = extend_brk(PAGE_SIZE, PAGE_SIZE); + mid_mfn_p = alloc_bootmem_align(PAGE_SIZE, PAGE_SIZE); p2m_mid_mfn_init(mid_mfn_p, p2m_missing); p2m_top_mfn_p[topidx] = mid_mfn_p; @@ -415,7 +411,6 @@ void __init xen_build_dynamic_phys_to_machine(void) m2p_override_init(); } #ifdef CONFIG_X86_64 -#include <linux/bootmem.h> unsigned long __init xen_revector_p2m_tree(void) { unsigned long va_start; @@ -477,7 +472,6 @@ unsigned long __init xen_revector_p2m_tree(void) copy_page(new, mid_p); p2m_top[topidx][mididx] = &mfn_list[pfn_free]; - p2m_top_mfn_p[topidx][mididx] = virt_to_mfn(&mfn_list[pfn_free]); pfn_free += P2M_PER_PAGE; @@ -538,12 +532,13 @@ static bool alloc_p2m(unsigned long pfn) unsigned topidx, mididx; unsigned long ***top_p, **mid; unsigned long *top_mfn_p, *mid_mfn; + unsigned long *p2m_orig; topidx = p2m_top_index(pfn); mididx = p2m_mid_index(pfn); top_p = &p2m_top[topidx]; - mid = *top_p; + mid = ACCESS_ONCE(*top_p); if (mid == p2m_mid_missing) { /* Mid level is missing, allocate a new one */ @@ -558,7 +553,7 @@ static bool alloc_p2m(unsigned long pfn) } top_mfn_p = &p2m_top_mfn[topidx]; - mid_mfn = p2m_top_mfn_p[topidx]; + mid_mfn = ACCESS_ONCE(p2m_top_mfn_p[topidx]); BUG_ON(virt_to_mfn(mid_mfn) != *top_mfn_p); @@ -566,6 +561,7 @@ static bool alloc_p2m(unsigned long pfn) /* Separately check the mid mfn level */ unsigned long missing_mfn; unsigned long mid_mfn_mfn; + unsigned long old_mfn; mid_mfn = alloc_p2m_page(); if (!mid_mfn) @@ -575,17 +571,19 @@ static bool alloc_p2m(unsigned long pfn) missing_mfn = virt_to_mfn(p2m_mid_missing_mfn); mid_mfn_mfn = virt_to_mfn(mid_mfn); - if (cmpxchg(top_mfn_p, missing_mfn, mid_mfn_mfn) != missing_mfn) + old_mfn = cmpxchg(top_mfn_p, missing_mfn, mid_mfn_mfn); + if (old_mfn != missing_mfn) { free_p2m_page(mid_mfn); - else + mid_mfn = mfn_to_virt(old_mfn); + } else { p2m_top_mfn_p[topidx] = mid_mfn; + } } - if (p2m_top[topidx][mididx] == p2m_identity || - p2m_top[topidx][mididx] == p2m_missing) { + p2m_orig = ACCESS_ONCE(p2m_top[topidx][mididx]); + if (p2m_orig == p2m_identity || p2m_orig == p2m_missing) { /* p2m leaf page is missing */ unsigned long *p2m; - unsigned long *p2m_orig = p2m_top[topidx][mididx]; p2m = alloc_p2m_page(); if (!p2m) @@ -606,7 +604,6 @@ static bool __init early_alloc_p2m(unsigned long pfn, bool check_boundary) { unsigned topidx, mididx, idx; unsigned long *p2m; - unsigned long *mid_mfn_p; topidx = p2m_top_index(pfn); mididx = p2m_mid_index(pfn); @@ -633,43 +630,21 @@ static bool __init early_alloc_p2m(unsigned long pfn, bool check_boundary) p2m_top[topidx][mididx] = p2m; - /* For save/restore we need to MFN of the P2M saved */ - - mid_mfn_p = p2m_top_mfn_p[topidx]; - WARN(mid_mfn_p[mididx] != virt_to_mfn(p2m_missing), - "P2M_TOP_P[%d][%d] != MFN of p2m_missing!\n", - topidx, mididx); - mid_mfn_p[mididx] = virt_to_mfn(p2m); - return true; } static bool __init early_alloc_p2m_middle(unsigned long pfn) { unsigned topidx = p2m_top_index(pfn); - unsigned long *mid_mfn_p; unsigned long **mid; mid = p2m_top[topidx]; - mid_mfn_p = p2m_top_mfn_p[topidx]; if (mid == p2m_mid_missing) { mid = extend_brk(PAGE_SIZE, PAGE_SIZE); p2m_mid_init(mid, p2m_missing); p2m_top[topidx] = mid; - - BUG_ON(mid_mfn_p != p2m_mid_missing_mfn); - } - /* And the save/restore P2M tables.. */ - if (mid_mfn_p == p2m_mid_missing_mfn) { - mid_mfn_p = extend_brk(PAGE_SIZE, PAGE_SIZE); - p2m_mid_mfn_init(mid_mfn_p, p2m_missing); - - p2m_top_mfn_p[topidx] = mid_mfn_p; - p2m_top_mfn[topidx] = virt_to_mfn(mid_mfn_p); - /* Note: we don't set mid_mfn_p[midix] here, - * look in early_alloc_p2m() */ } return true; } @@ -680,14 +655,13 @@ static bool __init early_alloc_p2m_middle(unsigned long pfn) * replace the P2M leaf with a p2m_missing or p2m_identity. * Stick the old page in the new P2M tree location. */ -bool __init early_can_reuse_p2m_middle(unsigned long set_pfn, unsigned long set_mfn) +static bool __init early_can_reuse_p2m_middle(unsigned long set_pfn) { unsigned topidx; unsigned mididx; unsigned ident_pfns; unsigned inv_pfns; unsigned long *p2m; - unsigned long *mid_mfn_p; unsigned idx; unsigned long pfn; @@ -733,11 +707,6 @@ bool __init early_can_reuse_p2m_middle(unsigned long set_pfn, unsigned long set_ found: /* Found one, replace old with p2m_identity or p2m_missing */ p2m_top[topidx][mididx] = (ident_pfns ? p2m_identity : p2m_missing); - /* And the other for save/restore.. */ - mid_mfn_p = p2m_top_mfn_p[topidx]; - /* NOTE: Even if it is a p2m_identity it should still be point to - * a page filled with INVALID_P2M_ENTRY entries. */ - mid_mfn_p[mididx] = virt_to_mfn(p2m_missing); /* Reset where we want to stick the old page in. */ topidx = p2m_top_index(set_pfn); @@ -752,8 +721,6 @@ found: p2m_init(p2m); p2m_top[topidx][mididx] = p2m; - mid_mfn_p = p2m_top_mfn_p[topidx]; - mid_mfn_p[mididx] = virt_to_mfn(p2m); return true; } @@ -763,7 +730,7 @@ bool __init early_set_phys_to_machine(unsigned long pfn, unsigned long mfn) if (!early_alloc_p2m_middle(pfn)) return false; - if (early_can_reuse_p2m_middle(pfn, mfn)) + if (early_can_reuse_p2m_middle(pfn)) return __set_phys_to_machine(pfn, mfn); if (!early_alloc_p2m(pfn, false /* boundary crossover OK!*/)) diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index af7216128d93..29834b3fd87f 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -595,6 +595,7 @@ char * __init xen_memory_setup(void) rc = 0; } BUG_ON(rc); + BUG_ON(memmap.nr_entries == 0); /* * Xen won't allow a 1:1 mapping to be created to UNUSABLE diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c index a1d430b112b3..f473d268d387 100644 --- a/arch/x86/xen/time.c +++ b/arch/x86/xen/time.c @@ -158,7 +158,7 @@ cycle_t xen_clocksource_read(void) cycle_t ret; preempt_disable_notrace(); - src = this_cpu_ptr(&xen_vcpu->time); + src = &__this_cpu_read(xen_vcpu)->time; ret = pvclock_clocksource_read(src); preempt_enable_notrace(); return ret; diff --git a/crypto/cts.c b/crypto/cts.c index 042223f8e733..133f0874c95e 100644 --- a/crypto/cts.c +++ b/crypto/cts.c @@ -202,7 +202,8 @@ static int cts_cbc_decrypt(struct crypto_cts_ctx *ctx, /* 5. Append the tail (BB - Ln) bytes of Xn (tmp) to Cn to create En */ memcpy(s + bsize + lastn, tmp + lastn, bsize - lastn); /* 6. Decrypt En to create Pn-1 */ - memset(iv, 0, sizeof(iv)); + memzero_explicit(iv, sizeof(iv)); + sg_set_buf(&sgsrc[0], s + bsize, bsize); sg_set_buf(&sgdst[0], d, bsize); err = crypto_blkcipher_decrypt_iv(&lcldesc, sgdst, sgsrc, bsize); diff --git a/crypto/sha1_generic.c b/crypto/sha1_generic.c index 42794803c480..7bb047432782 100644 --- a/crypto/sha1_generic.c +++ b/crypto/sha1_generic.c @@ -64,7 +64,7 @@ int crypto_sha1_update(struct shash_desc *desc, const u8 *data, src = data + done; } while (done + SHA1_BLOCK_SIZE <= len); - memset(temp, 0, sizeof(temp)); + memzero_explicit(temp, sizeof(temp)); partial = 0; } memcpy(sctx->buffer + partial, src, len - done); diff --git a/crypto/sha256_generic.c b/crypto/sha256_generic.c index 0bb558344699..65e7b76b057f 100644 --- a/crypto/sha256_generic.c +++ b/crypto/sha256_generic.c @@ -211,10 +211,9 @@ static void sha256_transform(u32 *state, const u8 *input) /* clear any sensitive info... */ a = b = c = d = e = f = g = h = t1 = t2 = 0; - memset(W, 0, 64 * sizeof(u32)); + memzero_explicit(W, 64 * sizeof(u32)); } - static int sha224_init(struct shash_desc *desc) { struct sha256_state *sctx = shash_desc_ctx(desc); @@ -317,7 +316,7 @@ static int sha224_final(struct shash_desc *desc, u8 *hash) sha256_final(desc, D); memcpy(hash, D, SHA224_DIGEST_SIZE); - memset(D, 0, SHA256_DIGEST_SIZE); + memzero_explicit(D, SHA256_DIGEST_SIZE); return 0; } diff --git a/crypto/sha512_generic.c b/crypto/sha512_generic.c index 6dde57dc511b..95db67197cd9 100644 --- a/crypto/sha512_generic.c +++ b/crypto/sha512_generic.c @@ -239,7 +239,7 @@ static int sha384_final(struct shash_desc *desc, u8 *hash) sha512_final(desc, D); memcpy(hash, D, 48); - memset(D, 0, 64); + memzero_explicit(D, 64); return 0; } diff --git a/crypto/tgr192.c b/crypto/tgr192.c index 87403556fd0b..3c7af0d1ff7a 100644 --- a/crypto/tgr192.c +++ b/crypto/tgr192.c @@ -612,7 +612,7 @@ static int tgr160_final(struct shash_desc *desc, u8 * out) tgr192_final(desc, D); memcpy(out, D, TGR160_DIGEST_SIZE); - memset(D, 0, TGR192_DIGEST_SIZE); + memzero_explicit(D, TGR192_DIGEST_SIZE); return 0; } @@ -623,7 +623,7 @@ static int tgr128_final(struct shash_desc *desc, u8 * out) tgr192_final(desc, D); memcpy(out, D, TGR128_DIGEST_SIZE); - memset(D, 0, TGR192_DIGEST_SIZE); + memzero_explicit(D, TGR192_DIGEST_SIZE); return 0; } diff --git a/crypto/vmac.c b/crypto/vmac.c index 2eb11a30c29c..d84c24bd7ff7 100644 --- a/crypto/vmac.c +++ b/crypto/vmac.c @@ -613,7 +613,7 @@ static int vmac_final(struct shash_desc *pdesc, u8 *out) } mac = vmac(ctx->partial, ctx->partial_size, nonce, NULL, ctx); memcpy(out, &mac, sizeof(vmac_t)); - memset(&mac, 0, sizeof(vmac_t)); + memzero_explicit(&mac, sizeof(vmac_t)); memset(&ctx->__vmac_ctx, 0, sizeof(struct vmac_ctx)); ctx->partial_size = 0; return 0; diff --git a/crypto/wp512.c b/crypto/wp512.c index 180f1d6e03f4..ec64e7762fbb 100644 --- a/crypto/wp512.c +++ b/crypto/wp512.c @@ -1102,8 +1102,8 @@ static int wp384_final(struct shash_desc *desc, u8 *out) u8 D[64]; wp512_final(desc, D); - memcpy (out, D, WP384_DIGEST_SIZE); - memset (D, 0, WP512_DIGEST_SIZE); + memcpy(out, D, WP384_DIGEST_SIZE); + memzero_explicit(D, WP512_DIGEST_SIZE); return 0; } @@ -1113,8 +1113,8 @@ static int wp256_final(struct shash_desc *desc, u8 *out) u8 D[64]; wp512_final(desc, D); - memcpy (out, D, WP256_DIGEST_SIZE); - memset (D, 0, WP512_DIGEST_SIZE); + memcpy(out, D, WP256_DIGEST_SIZE); + memzero_explicit(D, WP512_DIGEST_SIZE); return 0; } diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index d0f3265fb85d..b23fe37f67c0 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -144,7 +144,7 @@ config ACPI_VIDEO config ACPI_FAN tristate "Fan" - select THERMAL + depends on THERMAL default y help This driver supports ACPI fan devices, allowing user-mode diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 505d4d79fe3e..c3b2fcb729f3 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -43,6 +43,7 @@ acpi-y += pci_root.o pci_link.o pci_irq.o acpi-y += acpi_lpss.o acpi-y += acpi_platform.o acpi-y += acpi_pnp.o +acpi-y += int340x_thermal.o acpi-y += power.o acpi-y += event.o acpi-y += sysfs.o diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c index 2bf9082f7523..6ba8beb6b9d2 100644 --- a/drivers/acpi/acpi_platform.c +++ b/drivers/acpi/acpi_platform.c @@ -16,6 +16,7 @@ #include <linux/err.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/dma-mapping.h> #include <linux/platform_device.h> #include "internal.h" @@ -102,6 +103,7 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev) pdevinfo.res = resources; pdevinfo.num_res = count; pdevinfo.acpi_node.companion = adev; + pdevinfo.dma_mask = DMA_BIT_MASK(32); pdev = platform_device_register_full(&pdevinfo); if (IS_ERR(pdev)) dev_err(&adev->dev, "platform device creation failed: %ld\n", @@ -113,3 +115,4 @@ struct platform_device *acpi_create_platform_device(struct acpi_device *adev) kfree(resources); return pdev; } +EXPORT_SYMBOL_GPL(acpi_create_platform_device); diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index 2ad2351a9833..c318d3e27893 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -127,7 +127,7 @@ acpi_hw_clear_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, acpi_status acpi_hw_get_gpe_status(struct acpi_gpe_event_info *gpe_event_info, - acpi_event_status * event_status); + acpi_event_status *event_status); acpi_status acpi_hw_disable_all_gpes(void); diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index 2747279fbe3c..c00e7e41ad75 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -413,8 +413,8 @@ struct acpi_gpe_handler_info { acpi_gpe_handler address; /* Address of handler, if any */ void *context; /* Context to be passed to handler */ struct acpi_namespace_node *method_node; /* Method node for this GPE level (saved) */ - u8 original_flags; /* Original (pre-handler) GPE info */ - u8 originally_enabled; /* True if GPE was originally enabled */ + u8 original_flags; /* Original (pre-handler) GPE info */ + u8 originally_enabled; /* True if GPE was originally enabled */ }; /* Notify info for implicit notify, multiple device objects */ diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h index f14882788eee..1afe46e44dac 100644 --- a/drivers/acpi/acpica/actables.h +++ b/drivers/acpi/acpica/actables.h @@ -49,6 +49,8 @@ acpi_status acpi_allocate_root_table(u32 initial_table_count); /* * tbxfroot - Root pointer utilities */ +u32 acpi_tb_get_rsdp_length(struct acpi_table_rsdp *rsdp); + acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp); u8 *acpi_tb_scan_memory_for_rsdp(u8 *start_address, u32 length); diff --git a/drivers/acpi/acpica/amlresrc.h b/drivers/acpi/acpica/amlresrc.h index f3f834408441..3a0beeb86ba5 100644 --- a/drivers/acpi/acpica/amlresrc.h +++ b/drivers/acpi/acpica/amlresrc.h @@ -117,6 +117,12 @@ struct asl_resource_node { struct asl_resource_node *next; }; +struct asl_resource_info { + union acpi_parse_object *descriptor_type_op; /* Resource descriptor parse node */ + union acpi_parse_object *mapping_op; /* Used for mapfile support */ + u32 current_byte_offset; /* Offset in resource template */ +}; + /* Macros used to generate AML resource length fields */ #define ACPI_AML_SIZE_LARGE(r) (sizeof (r) - sizeof (struct aml_resource_large_header)) @@ -449,4 +455,32 @@ union aml_resource { u8 byte_item; }; +/* Interfaces used by both the disassembler and compiler */ + +void +mp_save_gpio_info(union acpi_parse_object *op, + union aml_resource *resource, + u32 pin_count, u16 *pin_list, char *device_name); + +void +mp_save_serial_info(union acpi_parse_object *op, + union aml_resource *resource, char *device_name); + +char *mp_get_hid_from_parse_tree(struct acpi_namespace_node *hid_node); + +char *mp_get_hid_via_namestring(char *device_name); + +char *mp_get_connection_info(union acpi_parse_object *op, + u32 pin_index, + struct acpi_namespace_node **target_node, + char **target_name); + +char *mp_get_parent_device_hid(union acpi_parse_object *op, + struct acpi_namespace_node **target_node, + char **parent_device_name); + +char *mp_get_ddn_value(char *device_name); + +char *mp_get_hid_value(struct acpi_namespace_node *device_node); + #endif diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index e4ba4dec86af..2095dfb72bcb 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -100,13 +100,14 @@ acpi_ev_update_gpe_enable_mask(struct acpi_gpe_event_info *gpe_event_info) * * FUNCTION: acpi_ev_enable_gpe * - * PARAMETERS: gpe_event_info - GPE to enable + * PARAMETERS: gpe_event_info - GPE to enable * * RETURN: Status * * DESCRIPTION: Clear a GPE of stale events and enable it. * ******************************************************************************/ + acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info) { acpi_status status; @@ -125,6 +126,7 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info) } /* Clear the GPE (of stale events) */ + status = acpi_hw_clear_gpe(gpe_event_info); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); @@ -136,7 +138,6 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info) return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_ev_add_gpe_reference @@ -212,7 +213,7 @@ acpi_ev_remove_gpe_reference(struct acpi_gpe_event_info *gpe_event_info) if (ACPI_SUCCESS(status)) { status = acpi_hw_low_set_gpe(gpe_event_info, - ACPI_GPE_DISABLE); + ACPI_GPE_DISABLE); } if (ACPI_FAILURE(status)) { @@ -334,7 +335,7 @@ struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device, * ******************************************************************************/ -u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list) +u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info *gpe_xrupt_list) { acpi_status status; struct acpi_gpe_block_info *gpe_block; @@ -427,7 +428,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list) /* Check if there is anything active at all in this register */ - enabled_status_byte = (u8) (status_reg & enable_reg); + enabled_status_byte = (u8)(status_reg & enable_reg); if (!enabled_status_byte) { /* No active GPEs in this register, move on */ @@ -450,7 +451,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list) acpi_ev_gpe_dispatch(gpe_block-> node, &gpe_block-> - event_info[((acpi_size) i * ACPI_GPE_REGISTER_WIDTH) + j], j + gpe_register_info->base_gpe_number); + event_info[((acpi_size) i * ACPI_GPE_REGISTER_WIDTH) + j], j + gpe_register_info->base_gpe_number); } } } @@ -636,7 +637,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_enable_gpe(void *context) * ******************************************************************************/ -acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info *gpe_event_info) +acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info * gpe_event_info) { acpi_status status; @@ -666,9 +667,9 @@ acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info *gpe_event_info) * * FUNCTION: acpi_ev_gpe_dispatch * - * PARAMETERS: gpe_device - Device node. NULL for GPE0/GPE1 - * gpe_event_info - Info for this GPE - * gpe_number - Number relative to the parent GPE block + * PARAMETERS: gpe_device - Device node. NULL for GPE0/GPE1 + * gpe_event_info - Info for this GPE + * gpe_number - Number relative to the parent GPE block * * RETURN: INTERRUPT_HANDLED or INTERRUPT_NOT_HANDLED * @@ -681,7 +682,7 @@ acpi_status acpi_ev_finish_gpe(struct acpi_gpe_event_info *gpe_event_info) u32 acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device, - struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number) + struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number) { acpi_status status; u32 return_value; diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c index 49fc7effd961..7be928379879 100644 --- a/drivers/acpi/acpica/evgpeinit.c +++ b/drivers/acpi/acpica/evgpeinit.c @@ -424,6 +424,7 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle, } /* Disable the GPE in case it's been enabled already. */ + (void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE); /* diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c index 11e5803b8b41..55a58f3ec8df 100644 --- a/drivers/acpi/acpica/evxface.c +++ b/drivers/acpi/acpica/evxface.c @@ -786,18 +786,26 @@ acpi_install_gpe_handler(acpi_handle gpe_device, handler->method_node = gpe_event_info->dispatch.method_node; handler->original_flags = (u8)(gpe_event_info->flags & (ACPI_GPE_XRUPT_TYPE_MASK | - ACPI_GPE_DISPATCH_MASK)); + ACPI_GPE_DISPATCH_MASK)); /* * If the GPE is associated with a method, it may have been enabled * automatically during initialization, in which case it has to be * disabled now to avoid spurious execution of the handler. */ - - if ((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) - && gpe_event_info->runtime_count) { - handler->originally_enabled = 1; + if (((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) || + (handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) && + gpe_event_info->runtime_count) { + handler->originally_enabled = TRUE; (void)acpi_ev_remove_gpe_reference(gpe_event_info); + + /* Sanity check of original type against new type */ + + if (type != + (u32)(gpe_event_info->flags & ACPI_GPE_XRUPT_TYPE_MASK)) { + ACPI_WARNING((AE_INFO, + "GPE type mismatch (level/edge)")); + } } /* Install the handler */ @@ -808,7 +816,7 @@ acpi_install_gpe_handler(acpi_handle gpe_device, gpe_event_info->flags &= ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); - gpe_event_info->flags |= (u8) (type | ACPI_GPE_DISPATCH_HANDLER); + gpe_event_info->flags |= (u8)(type | ACPI_GPE_DISPATCH_HANDLER); acpi_os_release_lock(acpi_gbl_gpe_lock, flags); @@ -893,7 +901,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, gpe_event_info->dispatch.method_node = handler->method_node; gpe_event_info->flags &= - ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); + ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); gpe_event_info->flags |= handler->original_flags; /* @@ -901,7 +909,8 @@ acpi_remove_gpe_handler(acpi_handle gpe_device, * enabled, it should be enabled at this point to restore the * post-initialization configuration. */ - if ((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) && + if (((handler->original_flags & ACPI_GPE_DISPATCH_METHOD) || + (handler->original_flags & ACPI_GPE_DISPATCH_NOTIFY)) && handler->originally_enabled) { (void)acpi_ev_add_gpe_reference(gpe_event_info); } @@ -946,7 +955,7 @@ ACPI_EXPORT_SYMBOL(acpi_remove_gpe_handler) * handle is returned. * ******************************************************************************/ -acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle) +acpi_status acpi_acquire_global_lock(u16 timeout, u32 *handle) { acpi_status status; diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c index e286640ad4ff..bb8cbf5961bf 100644 --- a/drivers/acpi/acpica/evxfevnt.c +++ b/drivers/acpi/acpica/evxfevnt.c @@ -324,8 +324,9 @@ ACPI_EXPORT_SYMBOL(acpi_clear_event) ******************************************************************************/ acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status) { - acpi_status status = AE_OK; - u32 value; + acpi_status status; + acpi_event_status local_event_status = 0; + u32 in_byte; ACPI_FUNCTION_TRACE(acpi_get_event_status); @@ -339,29 +340,40 @@ acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status) return_ACPI_STATUS(AE_BAD_PARAMETER); } - /* Get the status of the requested fixed event */ + /* Fixed event currently can be dispatched? */ + + if (acpi_gbl_fixed_event_handlers[event].handler) { + local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER; + } + + /* Fixed event currently enabled? */ status = acpi_read_bit_register(acpi_gbl_fixed_event_info[event]. - enable_register_id, &value); - if (ACPI_FAILURE(status)) + enable_register_id, &in_byte); + if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); + } - *event_status = value; + if (in_byte) { + local_event_status |= ACPI_EVENT_FLAG_ENABLED; + } + + /* Fixed event currently active? */ status = acpi_read_bit_register(acpi_gbl_fixed_event_info[event]. - status_register_id, &value); - if (ACPI_FAILURE(status)) + status_register_id, &in_byte); + if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); + } - if (value) - *event_status |= ACPI_EVENT_FLAG_SET; - - if (acpi_gbl_fixed_event_handlers[event].handler) - *event_status |= ACPI_EVENT_FLAG_HANDLE; + if (in_byte) { + local_event_status |= ACPI_EVENT_FLAG_SET; + } - return_ACPI_STATUS(status); + (*event_status) = local_event_status; + return_ACPI_STATUS(AE_OK); } ACPI_EXPORT_SYMBOL(acpi_get_event_status) diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index 56710a03c9b0..e889a5304abd 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -106,8 +106,8 @@ ACPI_EXPORT_SYMBOL(acpi_update_all_gpes) * * FUNCTION: acpi_enable_gpe * - * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 - * gpe_number - GPE level within the GPE block + * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 + * gpe_number - GPE level within the GPE block * * RETURN: Status * @@ -115,7 +115,6 @@ ACPI_EXPORT_SYMBOL(acpi_update_all_gpes) * hardware-enabled. * ******************************************************************************/ - acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number) { acpi_status status = AE_BAD_PARAMETER; @@ -490,8 +489,8 @@ ACPI_EXPORT_SYMBOL(acpi_clear_gpe) * * FUNCTION: acpi_get_gpe_status * - * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 - * gpe_number - GPE level within the GPE block + * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1 + * gpe_number - GPE level within the GPE block * event_status - Where the current status of the event * will be returned * @@ -524,9 +523,6 @@ acpi_get_gpe_status(acpi_handle gpe_device, status = acpi_hw_get_gpe_status(gpe_event_info, event_status); - if (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) - *event_status |= ACPI_EVENT_FLAG_HANDLE; - unlock_and_exit: acpi_os_release_lock(acpi_gbl_gpe_lock, flags); return_ACPI_STATUS(status); diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c index ea62d40fd161..48ac7b7b59cd 100644 --- a/drivers/acpi/acpica/hwgpe.c +++ b/drivers/acpi/acpica/hwgpe.c @@ -202,7 +202,7 @@ acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info) acpi_status acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info, - acpi_event_status * event_status) + acpi_event_status *event_status) { u32 in_byte; u32 register_bit; @@ -216,6 +216,13 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info, return (AE_BAD_PARAMETER); } + /* GPE currently handled? */ + + if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) != + ACPI_GPE_DISPATCH_NONE) { + local_event_status |= ACPI_EVENT_FLAG_HAS_HANDLER; + } + /* Get the info block for the entire GPE register */ gpe_register_info = gpe_event_info->register_info; diff --git a/drivers/acpi/acpica/tbxfroot.c b/drivers/acpi/acpica/tbxfroot.c index 65ab8fed3d5e..43a54af2b548 100644 --- a/drivers/acpi/acpica/tbxfroot.c +++ b/drivers/acpi/acpica/tbxfroot.c @@ -50,6 +50,36 @@ ACPI_MODULE_NAME("tbxfroot") /******************************************************************************* * + * FUNCTION: acpi_tb_get_rsdp_length + * + * PARAMETERS: rsdp - Pointer to RSDP + * + * RETURN: Table length + * + * DESCRIPTION: Get the length of the RSDP + * + ******************************************************************************/ +u32 acpi_tb_get_rsdp_length(struct acpi_table_rsdp *rsdp) +{ + + if (!ACPI_VALIDATE_RSDP_SIG(rsdp->signature)) { + + /* BAD Signature */ + + return (0); + } + + /* "Length" field is available if table version >= 2 */ + + if (rsdp->revision >= 2) { + return (rsdp->length); + } else { + return (ACPI_RSDP_CHECKSUM_LENGTH); + } +} + +/******************************************************************************* + * * FUNCTION: acpi_tb_validate_rsdp * * PARAMETERS: rsdp - Pointer to unvalidated RSDP @@ -59,7 +89,8 @@ ACPI_MODULE_NAME("tbxfroot") * DESCRIPTION: Validate the RSDP (ptr) * ******************************************************************************/ -acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp *rsdp) + +acpi_status acpi_tb_validate_rsdp(struct acpi_table_rsdp * rsdp) { /* diff --git a/drivers/acpi/device_pm.c b/drivers/acpi/device_pm.c index bea6896be122..143ec6ea1468 100644 --- a/drivers/acpi/device_pm.c +++ b/drivers/acpi/device_pm.c @@ -343,6 +343,7 @@ int acpi_device_update_power(struct acpi_device *device, int *state_p) return 0; } +EXPORT_SYMBOL_GPL(acpi_device_update_power); int acpi_bus_update_power(acpi_handle handle, int *state_p) { @@ -710,7 +711,7 @@ int acpi_pm_device_run_wake(struct device *phys_dev, bool enable) return -ENODEV; } - return acpi_device_wakeup(adev, enable, ACPI_STATE_S0); + return acpi_device_wakeup(adev, ACPI_STATE_S0, enable); } EXPORT_SYMBOL(acpi_pm_device_run_wake); #endif /* CONFIG_PM_RUNTIME */ diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index cb6066c809ea..3d304ff7f095 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -128,12 +128,13 @@ static int EC_FLAGS_SKIP_DSDT_SCAN; /* Not all BIOS survive early DSDT scan */ static int EC_FLAGS_CLEAR_ON_RESUME; /* Needs acpi_ec_clear() on boot/resume */ /* -------------------------------------------------------------------------- - Transaction Management - -------------------------------------------------------------------------- */ + * Transaction Management + * -------------------------------------------------------------------------- */ static inline u8 acpi_ec_read_status(struct acpi_ec *ec) { u8 x = inb(ec->command_addr); + pr_debug("EC_SC(R) = 0x%2.2x " "SCI_EVT=%d BURST=%d CMD=%d IBF=%d OBF=%d\n", x, @@ -148,6 +149,7 @@ static inline u8 acpi_ec_read_status(struct acpi_ec *ec) static inline u8 acpi_ec_read_data(struct acpi_ec *ec) { u8 x = inb(ec->data_addr); + pr_debug("EC_DATA(R) = 0x%2.2x\n", x); return x; } @@ -164,10 +166,32 @@ static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data) outb(data, ec->data_addr); } +#ifdef DEBUG +static const char *acpi_ec_cmd_string(u8 cmd) +{ + switch (cmd) { + case 0x80: + return "RD_EC"; + case 0x81: + return "WR_EC"; + case 0x82: + return "BE_EC"; + case 0x83: + return "BD_EC"; + case 0x84: + return "QR_EC"; + } + return "UNKNOWN"; +} +#else +#define acpi_ec_cmd_string(cmd) "UNDEF" +#endif + static int ec_transaction_completed(struct acpi_ec *ec) { unsigned long flags; int ret = 0; + spin_lock_irqsave(&ec->lock, flags); if (ec->curr && (ec->curr->flags & ACPI_EC_COMMAND_COMPLETE)) ret = 1; @@ -181,7 +205,8 @@ static bool advance_transaction(struct acpi_ec *ec) u8 status; bool wakeup = false; - pr_debug("===== %s =====\n", in_interrupt() ? "IRQ" : "TASK"); + pr_debug("===== %s (%d) =====\n", + in_interrupt() ? "IRQ" : "TASK", smp_processor_id()); status = acpi_ec_read_status(ec); t = ec->curr; if (!t) @@ -198,7 +223,8 @@ static bool advance_transaction(struct acpi_ec *ec) if (t->rlen == t->ri) { t->flags |= ACPI_EC_COMMAND_COMPLETE; if (t->command == ACPI_EC_COMMAND_QUERY) - pr_debug("hardware QR_EC completion\n"); + pr_debug("***** Command(%s) hardware completion *****\n", + acpi_ec_cmd_string(t->command)); wakeup = true; } } else @@ -221,7 +247,8 @@ static bool advance_transaction(struct acpi_ec *ec) t->flags |= ACPI_EC_COMMAND_POLL; t->rdata[t->ri++] = 0x00; t->flags |= ACPI_EC_COMMAND_COMPLETE; - pr_debug("software QR_EC completion\n"); + pr_debug("***** Command(%s) software completion *****\n", + acpi_ec_cmd_string(t->command)); wakeup = true; } else if ((status & ACPI_EC_FLAG_IBF) == 0) { acpi_ec_write_cmd(ec, t->command); @@ -264,6 +291,7 @@ static int ec_poll(struct acpi_ec *ec) { unsigned long flags; int repeat = 5; /* number of command restarts */ + while (repeat--) { unsigned long delay = jiffies + msecs_to_jiffies(ec_delay); @@ -296,18 +324,25 @@ static int acpi_ec_transaction_unlocked(struct acpi_ec *ec, { unsigned long tmp; int ret = 0; + if (EC_FLAGS_MSI) udelay(ACPI_EC_MSI_UDELAY); /* start transaction */ spin_lock_irqsave(&ec->lock, tmp); /* following two actions should be kept atomic */ ec->curr = t; + pr_debug("***** Command(%s) started *****\n", + acpi_ec_cmd_string(t->command)); start_transaction(ec); spin_unlock_irqrestore(&ec->lock, tmp); ret = ec_poll(ec); spin_lock_irqsave(&ec->lock, tmp); - if (ec->curr->command == ACPI_EC_COMMAND_QUERY) + if (ec->curr->command == ACPI_EC_COMMAND_QUERY) { clear_bit(EC_FLAGS_QUERY_PENDING, &ec->flags); + pr_debug("***** Event stopped *****\n"); + } + pr_debug("***** Command(%s) stopped *****\n", + acpi_ec_cmd_string(t->command)); ec->curr = NULL; spin_unlock_irqrestore(&ec->lock, tmp); return ret; @@ -317,6 +352,7 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t) { int status; u32 glk; + if (!ec || (!t) || (t->wlen && !t->wdata) || (t->rlen && !t->rdata)) return -EINVAL; if (t->rdata) @@ -333,8 +369,6 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t) goto unlock; } } - pr_debug("transaction start (cmd=0x%02x, addr=0x%02x)\n", - t->command, t->wdata ? t->wdata[0] : 0); /* disable GPE during transaction if storm is detected */ if (test_bit(EC_FLAGS_GPE_STORM, &ec->flags)) { /* It has to be disabled, so that it doesn't trigger. */ @@ -355,7 +389,6 @@ static int acpi_ec_transaction(struct acpi_ec *ec, struct transaction *t) t->irq_count); set_bit(EC_FLAGS_GPE_STORM, &ec->flags); } - pr_debug("transaction end\n"); if (ec->global_lock) acpi_release_global_lock(glk); unlock: @@ -383,7 +416,7 @@ static int acpi_ec_burst_disable(struct acpi_ec *ec) acpi_ec_transaction(ec, &t) : 0; } -static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 * data) +static int acpi_ec_read(struct acpi_ec *ec, u8 address, u8 *data) { int result; u8 d; @@ -419,10 +452,9 @@ int ec_read(u8 addr, u8 *val) if (!err) { *val = temp_data; return 0; - } else - return err; + } + return err; } - EXPORT_SYMBOL(ec_read); int ec_write(u8 addr, u8 val) @@ -436,22 +468,21 @@ int ec_write(u8 addr, u8 val) return err; } - EXPORT_SYMBOL(ec_write); int ec_transaction(u8 command, - const u8 * wdata, unsigned wdata_len, - u8 * rdata, unsigned rdata_len) + const u8 *wdata, unsigned wdata_len, + u8 *rdata, unsigned rdata_len) { struct transaction t = {.command = command, .wdata = wdata, .rdata = rdata, .wlen = wdata_len, .rlen = rdata_len}; + if (!first_ec) return -ENODEV; return acpi_ec_transaction(first_ec, &t); } - EXPORT_SYMBOL(ec_transaction); /* Get the handle to the EC device */ @@ -461,7 +492,6 @@ acpi_handle ec_get_handle(void) return NULL; return first_ec->handle; } - EXPORT_SYMBOL(ec_get_handle); /* @@ -525,13 +555,14 @@ void acpi_ec_unblock_transactions_early(void) clear_bit(EC_FLAGS_BLOCKED, &first_ec->flags); } -static int acpi_ec_query_unlocked(struct acpi_ec *ec, u8 * data) +static int acpi_ec_query_unlocked(struct acpi_ec *ec, u8 *data) { int result; u8 d; struct transaction t = {.command = ACPI_EC_COMMAND_QUERY, .wdata = NULL, .rdata = &d, .wlen = 0, .rlen = 1}; + if (!ec || !data) return -EINVAL; /* @@ -557,6 +588,7 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, { struct acpi_ec_query_handler *handler = kzalloc(sizeof(struct acpi_ec_query_handler), GFP_KERNEL); + if (!handler) return -ENOMEM; @@ -569,12 +601,12 @@ int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit, mutex_unlock(&ec->mutex); return 0; } - EXPORT_SYMBOL_GPL(acpi_ec_add_query_handler); void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit) { struct acpi_ec_query_handler *handler, *tmp; + mutex_lock(&ec->mutex); list_for_each_entry_safe(handler, tmp, &ec->list, node) { if (query_bit == handler->query_bit) { @@ -584,20 +616,20 @@ void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit) } mutex_unlock(&ec->mutex); } - EXPORT_SYMBOL_GPL(acpi_ec_remove_query_handler); static void acpi_ec_run(void *cxt) { struct acpi_ec_query_handler *handler = cxt; + if (!handler) return; - pr_debug("start query execution\n"); + pr_debug("##### Query(0x%02x) started #####\n", handler->query_bit); if (handler->func) handler->func(handler->data); else if (handler->handle) acpi_evaluate_object(handler->handle, NULL, NULL, NULL); - pr_debug("stop query execution\n"); + pr_debug("##### Query(0x%02x) stopped #####\n", handler->query_bit); kfree(handler); } @@ -620,8 +652,8 @@ static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data) if (!copy) return -ENOMEM; memcpy(copy, handler, sizeof(*copy)); - pr_debug("push query execution (0x%2x) on queue\n", - value); + pr_debug("##### Query(0x%02x) scheduled #####\n", + handler->query_bit); return acpi_os_execute((copy->func) ? OSL_NOTIFY_HANDLER : OSL_GPE_HANDLER, acpi_ec_run, copy); @@ -633,6 +665,7 @@ static int acpi_ec_sync_query(struct acpi_ec *ec, u8 *data) static void acpi_ec_gpe_query(void *ec_cxt) { struct acpi_ec *ec = ec_cxt; + if (!ec) return; mutex_lock(&ec->mutex); @@ -644,7 +677,7 @@ static int ec_check_sci(struct acpi_ec *ec, u8 state) { if (state & ACPI_EC_FLAG_SCI) { if (!test_and_set_bit(EC_FLAGS_QUERY_PENDING, &ec->flags)) { - pr_debug("push gpe query to the queue\n"); + pr_debug("***** Event started *****\n"); return acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ec_gpe_query, ec); } @@ -667,8 +700,8 @@ static u32 acpi_ec_gpe_handler(acpi_handle gpe_device, } /* -------------------------------------------------------------------------- - Address Space Management - -------------------------------------------------------------------------- */ + * Address Space Management + * -------------------------------------------------------------------------- */ static acpi_status acpi_ec_space_handler(u32 function, acpi_physical_address address, @@ -699,27 +732,26 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address, switch (result) { case -EINVAL: return AE_BAD_PARAMETER; - break; case -ENODEV: return AE_NOT_FOUND; - break; case -ETIME: return AE_TIME; - break; default: return AE_OK; } } /* -------------------------------------------------------------------------- - Driver Interface - -------------------------------------------------------------------------- */ + * Driver Interface + * -------------------------------------------------------------------------- */ + static acpi_status ec_parse_io_ports(struct acpi_resource *resource, void *context); static struct acpi_ec *make_acpi_ec(void) { struct acpi_ec *ec = kzalloc(sizeof(struct acpi_ec), GFP_KERNEL); + if (!ec) return NULL; ec->flags = 1 << EC_FLAGS_QUERY_PENDING; @@ -742,9 +774,8 @@ acpi_ec_register_query_methods(acpi_handle handle, u32 level, status = acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer); - if (ACPI_SUCCESS(status) && sscanf(node_name, "_Q%x", &value) == 1) { + if (ACPI_SUCCESS(status) && sscanf(node_name, "_Q%x", &value) == 1) acpi_ec_add_query_handler(ec, value, handle, NULL, NULL); - } return AE_OK; } @@ -753,7 +784,6 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval) { acpi_status status; unsigned long long tmp = 0; - struct acpi_ec *ec = context; /* clear addr values, ec_parse_io_ports depend on it */ @@ -781,6 +811,7 @@ ec_parse_device(acpi_handle handle, u32 Level, void *context, void **retval) static int ec_install_handlers(struct acpi_ec *ec) { acpi_status status; + if (test_bit(EC_FLAGS_HANDLERS_INSTALLED, &ec->flags)) return 0; status = acpi_install_gpe_handler(NULL, ec->gpe, @@ -1078,7 +1109,8 @@ int __init acpi_ec_ecdt_probe(void) boot_ec->data_addr = ecdt_ptr->data.address; boot_ec->gpe = ecdt_ptr->gpe; boot_ec->handle = ACPI_ROOT_OBJECT; - acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle); + acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, + &boot_ec->handle); /* Don't trust ECDT, which comes from ASUSTek */ if (!EC_FLAGS_VALIDATE_ECDT) goto install; @@ -1162,6 +1194,5 @@ static void __exit acpi_ec_exit(void) { acpi_bus_unregister_driver(&acpi_ec_driver); - return; } #endif /* 0 */ diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c index 5328b1090e08..caf9b76b7ef8 100644 --- a/drivers/acpi/fan.c +++ b/drivers/acpi/fan.c @@ -30,22 +30,19 @@ #include <linux/uaccess.h> #include <linux/thermal.h> #include <linux/acpi.h> - -#define ACPI_FAN_CLASS "fan" -#define ACPI_FAN_FILE_STATE "state" - -#define _COMPONENT ACPI_FAN_COMPONENT -ACPI_MODULE_NAME("fan"); +#include <linux/platform_device.h> +#include <linux/sort.h> MODULE_AUTHOR("Paul Diefenbaugh"); MODULE_DESCRIPTION("ACPI Fan Driver"); MODULE_LICENSE("GPL"); -static int acpi_fan_add(struct acpi_device *device); -static int acpi_fan_remove(struct acpi_device *device); +static int acpi_fan_probe(struct platform_device *pdev); +static int acpi_fan_remove(struct platform_device *pdev); static const struct acpi_device_id fan_device_ids[] = { {"PNP0C0B", 0}, + {"INT3404", 0}, {"", 0}, }; MODULE_DEVICE_TABLE(acpi, fan_device_ids); @@ -64,37 +61,100 @@ static struct dev_pm_ops acpi_fan_pm = { #define FAN_PM_OPS_PTR NULL #endif -static struct acpi_driver acpi_fan_driver = { - .name = "fan", - .class = ACPI_FAN_CLASS, - .ids = fan_device_ids, - .ops = { - .add = acpi_fan_add, - .remove = acpi_fan_remove, - }, - .drv.pm = FAN_PM_OPS_PTR, +struct acpi_fan_fps { + u64 control; + u64 trip_point; + u64 speed; + u64 noise_level; + u64 power; +}; + +struct acpi_fan_fif { + u64 revision; + u64 fine_grain_ctrl; + u64 step_size; + u64 low_speed_notification; +}; + +struct acpi_fan { + bool acpi4; + struct acpi_fan_fif fif; + struct acpi_fan_fps *fps; + int fps_count; + struct thermal_cooling_device *cdev; +}; + +static struct platform_driver acpi_fan_driver = { + .probe = acpi_fan_probe, + .remove = acpi_fan_remove, + .driver = { + .name = "acpi-fan", + .acpi_match_table = fan_device_ids, + .pm = FAN_PM_OPS_PTR, + }, }; /* thermal cooling device callbacks */ static int fan_get_max_state(struct thermal_cooling_device *cdev, unsigned long *state) { - /* ACPI fan device only support two states: ON/OFF */ - *state = 1; + struct acpi_device *device = cdev->devdata; + struct acpi_fan *fan = acpi_driver_data(device); + + if (fan->acpi4) + *state = fan->fps_count - 1; + else + *state = 1; return 0; } -static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long - *state) +static int fan_get_state_acpi4(struct acpi_device *device, unsigned long *state) +{ + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_fan *fan = acpi_driver_data(device); + union acpi_object *obj; + acpi_status status; + int control, i; + + status = acpi_evaluate_object(device->handle, "_FST", NULL, &buffer); + if (ACPI_FAILURE(status)) { + dev_err(&device->dev, "Get fan state failed\n"); + return status; + } + + obj = buffer.pointer; + if (!obj || obj->type != ACPI_TYPE_PACKAGE || + obj->package.count != 3 || + obj->package.elements[1].type != ACPI_TYPE_INTEGER) { + dev_err(&device->dev, "Invalid _FST data\n"); + status = -EINVAL; + goto err; + } + + control = obj->package.elements[1].integer.value; + for (i = 0; i < fan->fps_count; i++) { + if (control == fan->fps[i].control) + break; + } + if (i == fan->fps_count) { + dev_dbg(&device->dev, "Invalid control value returned\n"); + status = -EINVAL; + goto err; + } + + *state = i; + +err: + kfree(obj); + return status; +} + +static int fan_get_state(struct acpi_device *device, unsigned long *state) { - struct acpi_device *device = cdev->devdata; int result; int acpi_state = ACPI_STATE_D0; - if (!device) - return -EINVAL; - - result = acpi_bus_update_power(device->handle, &acpi_state); + result = acpi_device_update_power(device, &acpi_state); if (result) return result; @@ -103,21 +163,57 @@ static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long return 0; } -static int -fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) +static int fan_get_cur_state(struct thermal_cooling_device *cdev, unsigned long + *state) { struct acpi_device *device = cdev->devdata; - int result; + struct acpi_fan *fan = acpi_driver_data(device); - if (!device || (state != 0 && state != 1)) + if (fan->acpi4) + return fan_get_state_acpi4(device, state); + else + return fan_get_state(device, state); +} + +static int fan_set_state(struct acpi_device *device, unsigned long state) +{ + if (state != 0 && state != 1) return -EINVAL; - result = acpi_bus_set_power(device->handle, - state ? ACPI_STATE_D0 : ACPI_STATE_D3_COLD); + return acpi_device_set_power(device, + state ? ACPI_STATE_D0 : ACPI_STATE_D3_COLD); +} - return result; +static int fan_set_state_acpi4(struct acpi_device *device, unsigned long state) +{ + struct acpi_fan *fan = acpi_driver_data(device); + acpi_status status; + + if (state >= fan->fps_count) + return -EINVAL; + + status = acpi_execute_simple_method(device->handle, "_FSL", + fan->fps[state].control); + if (ACPI_FAILURE(status)) { + dev_dbg(&device->dev, "Failed to set state by _FSL\n"); + return status; + } + + return 0; } +static int +fan_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) +{ + struct acpi_device *device = cdev->devdata; + struct acpi_fan *fan = acpi_driver_data(device); + + if (fan->acpi4) + return fan_set_state_acpi4(device, state); + else + return fan_set_state(device, state); + } + static const struct thermal_cooling_device_ops fan_cooling_ops = { .get_max_state = fan_get_max_state, .get_cur_state = fan_get_cur_state, @@ -129,21 +225,125 @@ static const struct thermal_cooling_device_ops fan_cooling_ops = { * -------------------------------------------------------------------------- */ -static int acpi_fan_add(struct acpi_device *device) +static bool acpi_fan_is_acpi4(struct acpi_device *device) { - int result = 0; - struct thermal_cooling_device *cdev; + return acpi_has_method(device->handle, "_FIF") && + acpi_has_method(device->handle, "_FPS") && + acpi_has_method(device->handle, "_FSL") && + acpi_has_method(device->handle, "_FST"); +} - if (!device) - return -EINVAL; +static int acpi_fan_get_fif(struct acpi_device *device) +{ + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_fan *fan = acpi_driver_data(device); + struct acpi_buffer format = { sizeof("NNNN"), "NNNN" }; + struct acpi_buffer fif = { sizeof(fan->fif), &fan->fif }; + union acpi_object *obj; + acpi_status status; + + status = acpi_evaluate_object(device->handle, "_FIF", NULL, &buffer); + if (ACPI_FAILURE(status)) + return status; + + obj = buffer.pointer; + if (!obj || obj->type != ACPI_TYPE_PACKAGE) { + dev_err(&device->dev, "Invalid _FIF data\n"); + status = -EINVAL; + goto err; + } - strcpy(acpi_device_name(device), "Fan"); - strcpy(acpi_device_class(device), ACPI_FAN_CLASS); + status = acpi_extract_package(obj, &format, &fif); + if (ACPI_FAILURE(status)) { + dev_err(&device->dev, "Invalid _FIF element\n"); + status = -EINVAL; + } - result = acpi_bus_update_power(device->handle, NULL); - if (result) { - dev_err(&device->dev, "Setting initial power state\n"); - goto end; +err: + kfree(obj); + return status; +} + +static int acpi_fan_speed_cmp(const void *a, const void *b) +{ + const struct acpi_fan_fps *fps1 = a; + const struct acpi_fan_fps *fps2 = b; + return fps1->speed - fps2->speed; +} + +static int acpi_fan_get_fps(struct acpi_device *device) +{ + struct acpi_fan *fan = acpi_driver_data(device); + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *obj; + acpi_status status; + int i; + + status = acpi_evaluate_object(device->handle, "_FPS", NULL, &buffer); + if (ACPI_FAILURE(status)) + return status; + + obj = buffer.pointer; + if (!obj || obj->type != ACPI_TYPE_PACKAGE || obj->package.count < 2) { + dev_err(&device->dev, "Invalid _FPS data\n"); + status = -EINVAL; + goto err; + } + + fan->fps_count = obj->package.count - 1; /* minus revision field */ + fan->fps = devm_kzalloc(&device->dev, + fan->fps_count * sizeof(struct acpi_fan_fps), + GFP_KERNEL); + if (!fan->fps) { + dev_err(&device->dev, "Not enough memory\n"); + status = -ENOMEM; + goto err; + } + for (i = 0; i < fan->fps_count; i++) { + struct acpi_buffer format = { sizeof("NNNNN"), "NNNNN" }; + struct acpi_buffer fps = { sizeof(fan->fps[i]), &fan->fps[i] }; + status = acpi_extract_package(&obj->package.elements[i + 1], + &format, &fps); + if (ACPI_FAILURE(status)) { + dev_err(&device->dev, "Invalid _FPS element\n"); + break; + } + } + + /* sort the state array according to fan speed in increase order */ + sort(fan->fps, fan->fps_count, sizeof(*fan->fps), + acpi_fan_speed_cmp, NULL); + +err: + kfree(obj); + return status; +} + +static int acpi_fan_probe(struct platform_device *pdev) +{ + int result = 0; + struct thermal_cooling_device *cdev; + struct acpi_fan *fan; + struct acpi_device *device = ACPI_COMPANION(&pdev->dev); + + fan = devm_kzalloc(&pdev->dev, sizeof(*fan), GFP_KERNEL); + if (!fan) { + dev_err(&device->dev, "No memory for fan\n"); + return -ENOMEM; + } + device->driver_data = fan; + platform_set_drvdata(pdev, fan); + + if (acpi_fan_is_acpi4(device)) { + if (acpi_fan_get_fif(device) || acpi_fan_get_fps(device)) + goto end; + fan->acpi4 = true; + } else { + result = acpi_device_update_power(device, NULL); + if (result) { + dev_err(&device->dev, "Setting initial power state\n"); + goto end; + } } cdev = thermal_cooling_device_register("Fan", device, @@ -153,44 +353,32 @@ static int acpi_fan_add(struct acpi_device *device) goto end; } - dev_dbg(&device->dev, "registered as cooling_device%d\n", cdev->id); + dev_dbg(&pdev->dev, "registered as cooling_device%d\n", cdev->id); - device->driver_data = cdev; - result = sysfs_create_link(&device->dev.kobj, + fan->cdev = cdev; + result = sysfs_create_link(&pdev->dev.kobj, &cdev->device.kobj, "thermal_cooling"); if (result) - dev_err(&device->dev, "Failed to create sysfs link " - "'thermal_cooling'\n"); + dev_err(&pdev->dev, "Failed to create sysfs link 'thermal_cooling'\n"); result = sysfs_create_link(&cdev->device.kobj, - &device->dev.kobj, + &pdev->dev.kobj, "device"); if (result) - dev_err(&device->dev, "Failed to create sysfs link 'device'\n"); - - dev_info(&device->dev, "ACPI: %s [%s] (%s)\n", - acpi_device_name(device), acpi_device_bid(device), - !device->power.state ? "on" : "off"); + dev_err(&pdev->dev, "Failed to create sysfs link 'device'\n"); end: return result; } -static int acpi_fan_remove(struct acpi_device *device) +static int acpi_fan_remove(struct platform_device *pdev) { - struct thermal_cooling_device *cdev; - - if (!device) - return -EINVAL; - - cdev = acpi_driver_data(device); - if (!cdev) - return -EINVAL; + struct acpi_fan *fan = platform_get_drvdata(pdev); - sysfs_remove_link(&device->dev.kobj, "thermal_cooling"); - sysfs_remove_link(&cdev->device.kobj, "device"); - thermal_cooling_device_unregister(cdev); + sysfs_remove_link(&pdev->dev.kobj, "thermal_cooling"); + sysfs_remove_link(&fan->cdev->device.kobj, "device"); + thermal_cooling_device_unregister(fan->cdev); return 0; } @@ -198,10 +386,11 @@ static int acpi_fan_remove(struct acpi_device *device) #ifdef CONFIG_PM_SLEEP static int acpi_fan_suspend(struct device *dev) { - if (!dev) - return -EINVAL; + struct acpi_fan *fan = dev_get_drvdata(dev); + if (fan->acpi4) + return 0; - acpi_bus_set_power(to_acpi_device(dev)->handle, ACPI_STATE_D0); + acpi_device_set_power(ACPI_COMPANION(dev), ACPI_STATE_D0); return AE_OK; } @@ -209,11 +398,12 @@ static int acpi_fan_suspend(struct device *dev) static int acpi_fan_resume(struct device *dev) { int result; + struct acpi_fan *fan = dev_get_drvdata(dev); - if (!dev) - return -EINVAL; + if (fan->acpi4) + return 0; - result = acpi_bus_update_power(to_acpi_device(dev)->handle, NULL); + result = acpi_device_update_power(ACPI_COMPANION(dev), NULL); if (result) dev_err(dev, "Error updating fan power state\n"); @@ -221,4 +411,4 @@ static int acpi_fan_resume(struct device *dev) } #endif -module_acpi_driver(acpi_fan_driver); +module_platform_driver(acpi_fan_driver); diff --git a/drivers/acpi/int340x_thermal.c b/drivers/acpi/int340x_thermal.c new file mode 100644 index 000000000000..a27d31d1ba24 --- /dev/null +++ b/drivers/acpi/int340x_thermal.c @@ -0,0 +1,51 @@ +/* + * ACPI support for int340x thermal drivers + * + * Copyright (C) 2014, Intel Corporation + * Authors: Zhang Rui <rui.zhang@intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/acpi.h> +#include <linux/module.h> + +#include "internal.h" + +#define DO_ENUMERATION 0x01 +static const struct acpi_device_id int340x_thermal_device_ids[] = { + {"INT3400", DO_ENUMERATION }, + {"INT3401"}, + {"INT3402"}, + {"INT3403"}, + {"INT3404"}, + {"INT3406"}, + {"INT3407"}, + {"INT3408"}, + {"INT3409"}, + {"INT340A"}, + {"INT340B"}, + {""}, +}; + +static int int340x_thermal_handler_attach(struct acpi_device *adev, + const struct acpi_device_id *id) +{ +#if defined(CONFIG_INT340X_THERMAL) || defined(CONFIG_INT340X_THERMAL_MODULE) + if (id->driver_data == DO_ENUMERATION) + acpi_create_platform_device(adev); +#endif + return 1; +} + +static struct acpi_scan_handler int340x_thermal_handler = { + .ids = int340x_thermal_device_ids, + .attach = int340x_thermal_handler_attach, +}; + +void __init acpi_int340x_thermal_init(void) +{ + acpi_scan_add_handler(&int340x_thermal_handler); +} diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 4c5cf77e7576..447f6d679b29 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -31,6 +31,7 @@ void acpi_pci_link_init(void); void acpi_processor_init(void); void acpi_platform_init(void); void acpi_pnp_init(void); +void acpi_int340x_thermal_init(void); int acpi_sysfs_init(void); void acpi_container_init(void); void acpi_memory_hotplug_init(void); @@ -103,8 +104,6 @@ int acpi_power_get_inferred_state(struct acpi_device *device, int *state); int acpi_power_on_resources(struct acpi_device *device, int state); int acpi_power_transition(struct acpi_device *device, int state); -int acpi_device_update_power(struct acpi_device *device, int *state_p); - int acpi_wakeup_device_init(void); #ifdef CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC @@ -168,13 +167,6 @@ static inline void suspend_nvs_restore(void) {} #endif /*-------------------------------------------------------------------------- - Platform bus support - -------------------------------------------------------------------------- */ -struct platform_device; - -struct platform_device *acpi_create_platform_device(struct acpi_device *adev); - -/*-------------------------------------------------------------------------- Video -------------------------------------------------------------------------- */ #if defined(CONFIG_ACPI_VIDEO) || defined(CONFIG_ACPI_VIDEO_MODULE) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index ae44d8654c82..d670158a26c5 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1470,7 +1470,7 @@ static void acpi_wakeup_gpe_init(struct acpi_device *device) if (ACPI_FAILURE(status)) return; - wakeup->flags.run_wake = !!(event_status & ACPI_EVENT_FLAG_HANDLE); + wakeup->flags.run_wake = !!(event_status & ACPI_EVENT_FLAG_HAS_HANDLER); } static void acpi_bus_get_wakeup_device_flags(struct acpi_device *device) @@ -2315,6 +2315,7 @@ int __init acpi_scan_init(void) acpi_container_init(); acpi_memory_hotplug_init(); acpi_pnp_init(); + acpi_int340x_thermal_init(); mutex_lock(&acpi_scan_lock); /* diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c index 38cb9782d4b8..13e577c80201 100644 --- a/drivers/acpi/sysfs.c +++ b/drivers/acpi/sysfs.c @@ -537,7 +537,7 @@ static ssize_t counter_show(struct kobject *kobj, if (result) goto end; - if (!(status & ACPI_EVENT_FLAG_HANDLE)) + if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER)) size += sprintf(buf + size, " invalid"); else if (status & ACPI_EVENT_FLAG_ENABLED) size += sprintf(buf + size, " enabled"); @@ -581,7 +581,7 @@ static ssize_t counter_set(struct kobject *kobj, if (result) goto end; - if (!(status & ACPI_EVENT_FLAG_HANDLE)) { + if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER)) { printk(KERN_WARNING PREFIX "Can not change Invalid GPE/Fixed Event status\n"); return -EINVAL; diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 112817e963e0..d24fa1964eb8 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -528,7 +528,6 @@ static void acpi_thermal_check(void *data) } /* sys I/F for generic thermal sysfs support */ -#define KELVIN_TO_MILLICELSIUS(t, off) (((t) - (off)) * 100) static int thermal_get_temp(struct thermal_zone_device *thermal, unsigned long *temp) @@ -543,7 +542,8 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, if (result) return result; - *temp = KELVIN_TO_MILLICELSIUS(tz->temperature, tz->kelvin_offset); + *temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(tz->temperature, + tz->kelvin_offset); return 0; } @@ -647,7 +647,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal, if (tz->trips.critical.flags.valid) { if (!trip) { - *temp = KELVIN_TO_MILLICELSIUS( + *temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET( tz->trips.critical.temperature, tz->kelvin_offset); return 0; @@ -657,7 +657,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal, if (tz->trips.hot.flags.valid) { if (!trip) { - *temp = KELVIN_TO_MILLICELSIUS( + *temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET( tz->trips.hot.temperature, tz->kelvin_offset); return 0; @@ -667,7 +667,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal, if (tz->trips.passive.flags.valid) { if (!trip) { - *temp = KELVIN_TO_MILLICELSIUS( + *temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET( tz->trips.passive.temperature, tz->kelvin_offset); return 0; @@ -678,7 +678,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal, for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE && tz->trips.active[i].flags.valid; i++) { if (!trip) { - *temp = KELVIN_TO_MILLICELSIUS( + *temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET( tz->trips.active[i].temperature, tz->kelvin_offset); return 0; @@ -694,7 +694,7 @@ static int thermal_get_crit_temp(struct thermal_zone_device *thermal, struct acpi_thermal *tz = thermal->devdata; if (tz->trips.critical.flags.valid) { - *temperature = KELVIN_TO_MILLICELSIUS( + *temperature = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET( tz->trips.critical.temperature, tz->kelvin_offset); return 0; @@ -714,8 +714,8 @@ static int thermal_get_trend(struct thermal_zone_device *thermal, if (type == THERMAL_TRIP_ACTIVE) { unsigned long trip_temp; - unsigned long temp = KELVIN_TO_MILLICELSIUS(tz->temperature, - tz->kelvin_offset); + unsigned long temp = DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET( + tz->temperature, tz->kelvin_offset); if (thermal_get_trip_temp(thermal, trip, &trip_temp)) return -EINVAL; diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c index 834f35c4bf8d..371ac12d25b1 100644 --- a/drivers/acpi/utils.c +++ b/drivers/acpi/utils.c @@ -149,6 +149,21 @@ acpi_extract_package(union acpi_object *package, break; } break; + case ACPI_TYPE_LOCAL_REFERENCE: + switch (format_string[i]) { + case 'R': + size_required += sizeof(void *); + tail_offset += sizeof(void *); + break; + default: + printk(KERN_WARNING PREFIX "Invalid package element" + " [%d] got reference," + " expecting [%c]\n", + i, format_string[i]); + return AE_BAD_DATA; + break; + } + break; case ACPI_TYPE_PACKAGE: default: @@ -247,7 +262,18 @@ acpi_extract_package(union acpi_object *package, break; } break; - + case ACPI_TYPE_LOCAL_REFERENCE: + switch (format_string[i]) { + case 'R': + *(void **)head = + (void *)element->reference.handle; + head += sizeof(void *); + break; + default: + /* Should never get here */ + break; + } + break; case ACPI_TYPE_PACKAGE: /* TBD: handle nested packages... */ default: diff --git a/drivers/char/random.c b/drivers/char/random.c index 82759cef9043..04645c09fe5e 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1106,7 +1106,7 @@ static void extract_buf(struct entropy_store *r, __u8 *out) __mix_pool_bytes(r, hash.w, sizeof(hash.w)); spin_unlock_irqrestore(&r->lock, flags); - memset(workspace, 0, sizeof(workspace)); + memzero_explicit(workspace, sizeof(workspace)); /* * In case the hash function has some recognizable output @@ -1118,7 +1118,7 @@ static void extract_buf(struct entropy_store *r, __u8 *out) hash.w[2] ^= rol32(hash.w[2], 16); memcpy(out, &hash, EXTRACT_SIZE); - memset(&hash, 0, sizeof(hash)); + memzero_explicit(&hash, sizeof(hash)); } /* @@ -1175,7 +1175,7 @@ static ssize_t extract_entropy(struct entropy_store *r, void *buf, } /* Wipe data just returned from memory */ - memset(tmp, 0, sizeof(tmp)); + memzero_explicit(tmp, sizeof(tmp)); return ret; } @@ -1218,7 +1218,7 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf, } /* Wipe data just returned from memory */ - memset(tmp, 0, sizeof(tmp)); + memzero_explicit(tmp, sizeof(tmp)); return ret; } diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index 6bbb8b913446..92c162af5045 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -18,6 +18,7 @@ #include <linux/cpu.h> #include <linux/cpu_cooling.h> #include <linux/cpufreq.h> +#include <linux/cpufreq-dt.h> #include <linux/cpumask.h> #include <linux/err.h> #include <linux/module.h> @@ -146,8 +147,8 @@ try_again: goto try_again; } - dev_warn(cpu_dev, "failed to get cpu%d regulator: %ld\n", - cpu, PTR_ERR(cpu_reg)); + dev_dbg(cpu_dev, "no regulator for cpu%d: %ld\n", + cpu, PTR_ERR(cpu_reg)); } cpu_clk = clk_get(cpu_dev, NULL); @@ -178,6 +179,7 @@ try_again: static int cpufreq_init(struct cpufreq_policy *policy) { + struct cpufreq_dt_platform_data *pd; struct cpufreq_frequency_table *freq_table; struct thermal_cooling_device *cdev; struct device_node *np; @@ -265,9 +267,18 @@ static int cpufreq_init(struct cpufreq_policy *policy) policy->driver_data = priv; policy->clk = cpu_clk; - ret = cpufreq_generic_init(policy, freq_table, transition_latency); - if (ret) + ret = cpufreq_table_validate_and_show(policy, freq_table); + if (ret) { + dev_err(cpu_dev, "%s: invalid frequency table: %d\n", __func__, + ret); goto out_cooling_unregister; + } + + policy->cpuinfo.transition_latency = transition_latency; + + pd = cpufreq_get_driver_data(); + if (pd && !pd->independent_clocks) + cpumask_setall(policy->cpus); of_node_put(np); @@ -335,6 +346,8 @@ static int dt_cpufreq_probe(struct platform_device *pdev) if (!IS_ERR(cpu_reg)) regulator_put(cpu_reg); + dt_cpufreq_driver.driver_data = dev_get_platdata(&pdev->dev); + ret = cpufreq_register_driver(&dt_cpufreq_driver); if (ret) dev_err(cpu_dev, "failed register driver: %d\n", ret); diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 24bf76fba141..644b54e1e7d1 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -512,7 +512,18 @@ show_one(cpuinfo_max_freq, cpuinfo.max_freq); show_one(cpuinfo_transition_latency, cpuinfo.transition_latency); show_one(scaling_min_freq, min); show_one(scaling_max_freq, max); -show_one(scaling_cur_freq, cur); + +static ssize_t show_scaling_cur_freq( + struct cpufreq_policy *policy, char *buf) +{ + ssize_t ret; + + if (cpufreq_driver && cpufreq_driver->setpolicy && cpufreq_driver->get) + ret = sprintf(buf, "%u\n", cpufreq_driver->get(policy->cpu)); + else + ret = sprintf(buf, "%u\n", policy->cur); + return ret; +} static int cpufreq_set_policy(struct cpufreq_policy *policy, struct cpufreq_policy *new_policy); @@ -906,11 +917,11 @@ static int cpufreq_add_dev_interface(struct cpufreq_policy *policy, if (ret) goto err_out_kobj_put; } - if (has_target()) { - ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr); - if (ret) - goto err_out_kobj_put; - } + + ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr); + if (ret) + goto err_out_kobj_put; + if (cpufreq_driver->bios_limit) { ret = sysfs_create_file(&policy->kobj, &bios_limit.attr); if (ret) @@ -1731,6 +1742,21 @@ const char *cpufreq_get_current_driver(void) } EXPORT_SYMBOL_GPL(cpufreq_get_current_driver); +/** + * cpufreq_get_driver_data - return current driver data + * + * Return the private data of the currently loaded cpufreq + * driver, or NULL if no cpufreq driver is loaded. + */ +void *cpufreq_get_driver_data(void) +{ + if (cpufreq_driver) + return cpufreq_driver->driver_data; + + return NULL; +} +EXPORT_SYMBOL_GPL(cpufreq_get_driver_data); + /********************************************************************* * NOTIFIER LISTS INTERFACE * *********************************************************************/ diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 0668b389c516..27bb6d3877ed 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -52,6 +52,17 @@ static inline int32_t div_fp(int32_t x, int32_t y) return div_s64((int64_t)x << FRAC_BITS, y); } +static inline int ceiling_fp(int32_t x) +{ + int mask, ret; + + ret = fp_toint(x); + mask = (1 << FRAC_BITS) - 1; + if (x & mask) + ret += 1; + return ret; +} + struct sample { int32_t core_pct_busy; u64 aperf; @@ -64,6 +75,7 @@ struct pstate_data { int current_pstate; int min_pstate; int max_pstate; + int scaling; int turbo_pstate; }; @@ -113,6 +125,7 @@ struct pstate_funcs { int (*get_max)(void); int (*get_min)(void); int (*get_turbo)(void); + int (*get_scaling)(void); void (*set)(struct cpudata*, int pstate); void (*get_vid)(struct cpudata *); }; @@ -138,6 +151,7 @@ struct perf_limits { static struct perf_limits limits = { .no_turbo = 0, + .turbo_disabled = 0, .max_perf_pct = 100, .max_perf = int_tofp(1), .min_perf_pct = 0, @@ -218,6 +232,18 @@ static inline void intel_pstate_reset_all_pid(void) } } +static inline void update_turbo_state(void) +{ + u64 misc_en; + struct cpudata *cpu; + + cpu = all_cpu_data[0]; + rdmsrl(MSR_IA32_MISC_ENABLE, misc_en); + limits.turbo_disabled = + (misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE || + cpu->pstate.max_pstate == cpu->pstate.turbo_pstate); +} + /************************** debugfs begin ************************/ static int pid_param_set(void *data, u64 val) { @@ -274,6 +300,20 @@ static void __init intel_pstate_debug_expose_params(void) return sprintf(buf, "%u\n", limits.object); \ } +static ssize_t show_no_turbo(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + ssize_t ret; + + update_turbo_state(); + if (limits.turbo_disabled) + ret = sprintf(buf, "%u\n", limits.turbo_disabled); + else + ret = sprintf(buf, "%u\n", limits.no_turbo); + + return ret; +} + static ssize_t store_no_turbo(struct kobject *a, struct attribute *b, const char *buf, size_t count) { @@ -283,11 +323,14 @@ static ssize_t store_no_turbo(struct kobject *a, struct attribute *b, ret = sscanf(buf, "%u", &input); if (ret != 1) return -EINVAL; - limits.no_turbo = clamp_t(int, input, 0 , 1); + + update_turbo_state(); if (limits.turbo_disabled) { pr_warn("Turbo disabled by BIOS or unavailable on processor\n"); - limits.no_turbo = limits.turbo_disabled; + return -EPERM; } + limits.no_turbo = clamp_t(int, input, 0, 1); + return count; } @@ -323,7 +366,6 @@ static ssize_t store_min_perf_pct(struct kobject *a, struct attribute *b, return count; } -show_one(no_turbo, no_turbo); show_one(max_perf_pct, max_perf_pct); show_one(min_perf_pct, min_perf_pct); @@ -394,7 +436,7 @@ static void byt_set_pstate(struct cpudata *cpudata, int pstate) cpudata->vid.ratio); vid_fp = clamp_t(int32_t, vid_fp, cpudata->vid.min, cpudata->vid.max); - vid = fp_toint(vid_fp); + vid = ceiling_fp(vid_fp); if (pstate > cpudata->pstate.max_pstate) vid = cpudata->vid.turbo; @@ -404,6 +446,22 @@ static void byt_set_pstate(struct cpudata *cpudata, int pstate) wrmsrl(MSR_IA32_PERF_CTL, val); } +#define BYT_BCLK_FREQS 5 +static int byt_freq_table[BYT_BCLK_FREQS] = { 833, 1000, 1333, 1167, 800}; + +static int byt_get_scaling(void) +{ + u64 value; + int i; + + rdmsrl(MSR_FSB_FREQ, value); + i = value & 0x3; + + BUG_ON(i > BYT_BCLK_FREQS); + + return byt_freq_table[i] * 100; +} + static void byt_get_vid(struct cpudata *cpudata) { u64 value; @@ -449,6 +507,11 @@ static int core_get_turbo_pstate(void) return ret; } +static inline int core_get_scaling(void) +{ + return 100000; +} + static void core_set_pstate(struct cpudata *cpudata, int pstate) { u64 val; @@ -473,6 +536,7 @@ static struct cpu_defaults core_params = { .get_max = core_get_max_pstate, .get_min = core_get_min_pstate, .get_turbo = core_get_turbo_pstate, + .get_scaling = core_get_scaling, .set = core_set_pstate, }, }; @@ -491,6 +555,7 @@ static struct cpu_defaults byt_params = { .get_min = byt_get_min_pstate, .get_turbo = byt_get_turbo_pstate, .set = byt_set_pstate, + .get_scaling = byt_get_scaling, .get_vid = byt_get_vid, }, }; @@ -501,7 +566,7 @@ static void intel_pstate_get_min_max(struct cpudata *cpu, int *min, int *max) int max_perf_adj; int min_perf; - if (limits.no_turbo) + if (limits.no_turbo || limits.turbo_disabled) max_perf = cpu->pstate.max_pstate; max_perf_adj = fp_toint(mul_fp(int_tofp(max_perf), limits.max_perf)); @@ -516,6 +581,8 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate) { int max_perf, min_perf; + update_turbo_state(); + intel_pstate_get_min_max(cpu, &min_perf, &max_perf); pstate = clamp_t(int, pstate, min_perf, max_perf); @@ -523,7 +590,7 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate) if (pstate == cpu->pstate.current_pstate) return; - trace_cpu_frequency(pstate * 100000, cpu->cpu); + trace_cpu_frequency(pstate * cpu->pstate.scaling, cpu->cpu); cpu->pstate.current_pstate = pstate; @@ -535,6 +602,7 @@ static void intel_pstate_get_cpu_pstates(struct cpudata *cpu) cpu->pstate.min_pstate = pstate_funcs.get_min(); cpu->pstate.max_pstate = pstate_funcs.get_max(); cpu->pstate.turbo_pstate = pstate_funcs.get_turbo(); + cpu->pstate.scaling = pstate_funcs.get_scaling(); if (pstate_funcs.get_vid) pstate_funcs.get_vid(cpu); @@ -550,7 +618,9 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu) core_pct = div64_u64(core_pct, int_tofp(sample->mperf)); sample->freq = fp_toint( - mul_fp(int_tofp(cpu->pstate.max_pstate * 1000), core_pct)); + mul_fp(int_tofp( + cpu->pstate.max_pstate * cpu->pstate.scaling / 100), + core_pct)); sample->core_pct_busy = (int32_t)core_pct; } @@ -671,7 +741,9 @@ static int intel_pstate_init_cpu(unsigned int cpunum) { struct cpudata *cpu; - all_cpu_data[cpunum] = kzalloc(sizeof(struct cpudata), GFP_KERNEL); + if (!all_cpu_data[cpunum]) + all_cpu_data[cpunum] = kzalloc(sizeof(struct cpudata), + GFP_KERNEL); if (!all_cpu_data[cpunum]) return -ENOMEM; @@ -714,9 +786,10 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy) if (policy->policy == CPUFREQ_POLICY_PERFORMANCE) { limits.min_perf_pct = 100; limits.min_perf = int_tofp(1); + limits.max_policy_pct = 100; limits.max_perf_pct = 100; limits.max_perf = int_tofp(1); - limits.no_turbo = limits.turbo_disabled; + limits.no_turbo = 0; return 0; } limits.min_perf_pct = (policy->min * 100) / policy->cpuinfo.max_freq; @@ -751,15 +824,12 @@ static void intel_pstate_stop_cpu(struct cpufreq_policy *policy) del_timer_sync(&all_cpu_data[cpu_num]->timer); intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate); - kfree(all_cpu_data[cpu_num]); - all_cpu_data[cpu_num] = NULL; } static int intel_pstate_cpu_init(struct cpufreq_policy *policy) { struct cpudata *cpu; int rc; - u64 misc_en; rc = intel_pstate_init_cpu(policy->cpu); if (rc) @@ -767,23 +837,18 @@ static int intel_pstate_cpu_init(struct cpufreq_policy *policy) cpu = all_cpu_data[policy->cpu]; - rdmsrl(MSR_IA32_MISC_ENABLE, misc_en); - if (misc_en & MSR_IA32_MISC_ENABLE_TURBO_DISABLE || - cpu->pstate.max_pstate == cpu->pstate.turbo_pstate) { - limits.turbo_disabled = 1; - limits.no_turbo = 1; - } if (limits.min_perf_pct == 100 && limits.max_perf_pct == 100) policy->policy = CPUFREQ_POLICY_PERFORMANCE; else policy->policy = CPUFREQ_POLICY_POWERSAVE; - policy->min = cpu->pstate.min_pstate * 100000; - policy->max = cpu->pstate.turbo_pstate * 100000; + policy->min = cpu->pstate.min_pstate * cpu->pstate.scaling; + policy->max = cpu->pstate.turbo_pstate * cpu->pstate.scaling; /* cpuinfo and default policy values */ - policy->cpuinfo.min_freq = cpu->pstate.min_pstate * 100000; - policy->cpuinfo.max_freq = cpu->pstate.turbo_pstate * 100000; + policy->cpuinfo.min_freq = cpu->pstate.min_pstate * cpu->pstate.scaling; + policy->cpuinfo.max_freq = + cpu->pstate.turbo_pstate * cpu->pstate.scaling; policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL; cpumask_set_cpu(policy->cpu, policy->cpus); @@ -841,6 +906,7 @@ static void copy_cpu_funcs(struct pstate_funcs *funcs) pstate_funcs.get_max = funcs->get_max; pstate_funcs.get_min = funcs->get_min; pstate_funcs.get_turbo = funcs->get_turbo; + pstate_funcs.get_scaling = funcs->get_scaling; pstate_funcs.set = funcs->set; pstate_funcs.get_vid = funcs->get_vid; } diff --git a/drivers/cpuidle/Kconfig.mips b/drivers/cpuidle/Kconfig.mips index 0e70ee28a5ca..4102be01d06a 100644 --- a/drivers/cpuidle/Kconfig.mips +++ b/drivers/cpuidle/Kconfig.mips @@ -3,7 +3,7 @@ # config MIPS_CPS_CPUIDLE bool "CPU Idle driver for MIPS CPS platforms" - depends on CPU_IDLE + depends on CPU_IDLE && MIPS_CPS depends on SYS_SUPPORTS_MIPS_CPS select ARCH_NEEDS_CPU_IDLE_COUPLED if MIPS_MT select GENERIC_CLOCKEVENTS_BROADCAST if SMP diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c index a64be578dab2..7d3a3497dd4c 100644 --- a/drivers/cpuidle/cpuidle-powernv.c +++ b/drivers/cpuidle/cpuidle-powernv.c @@ -163,7 +163,8 @@ static int powernv_add_idle_states(void) int nr_idle_states = 1; /* Snooze */ int dt_idle_states; const __be32 *idle_state_flags; - u32 len_flags, flags; + const __be32 *idle_state_latency; + u32 len_flags, flags, latency_ns; int i; /* Currently we have snooze statically defined */ @@ -180,18 +181,32 @@ static int powernv_add_idle_states(void) return nr_idle_states; } + idle_state_latency = of_get_property(power_mgt, + "ibm,cpu-idle-state-latencies-ns", NULL); + if (!idle_state_latency) { + pr_warn("DT-PowerMgmt: missing ibm,cpu-idle-state-latencies-ns\n"); + return nr_idle_states; + } + dt_idle_states = len_flags / sizeof(u32); for (i = 0; i < dt_idle_states; i++) { flags = be32_to_cpu(idle_state_flags[i]); + + /* Cpuidle accepts exit_latency in us and we estimate + * target residency to be 10x exit_latency + */ + latency_ns = be32_to_cpu(idle_state_latency[i]); if (flags & IDLE_USE_INST_NAP) { /* Add NAP state */ strcpy(powernv_states[nr_idle_states].name, "Nap"); strcpy(powernv_states[nr_idle_states].desc, "Nap"); powernv_states[nr_idle_states].flags = CPUIDLE_FLAG_TIME_VALID; - powernv_states[nr_idle_states].exit_latency = 10; - powernv_states[nr_idle_states].target_residency = 100; + powernv_states[nr_idle_states].exit_latency = + ((unsigned int)latency_ns) / 1000; + powernv_states[nr_idle_states].target_residency = + ((unsigned int)latency_ns / 100); powernv_states[nr_idle_states].enter = &nap_loop; nr_idle_states++; } @@ -202,8 +217,10 @@ static int powernv_add_idle_states(void) strcpy(powernv_states[nr_idle_states].desc, "FastSleep"); powernv_states[nr_idle_states].flags = CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TIMER_STOP; - powernv_states[nr_idle_states].exit_latency = 300; - powernv_states[nr_idle_states].target_residency = 1000000; + powernv_states[nr_idle_states].exit_latency = + ((unsigned int)latency_ns) / 1000; + powernv_states[nr_idle_states].target_residency = + ((unsigned int)latency_ns / 100); powernv_states[nr_idle_states].enter = &fastsleep_loop; nr_idle_states++; } diff --git a/drivers/edac/cpc925_edac.c b/drivers/edac/cpc925_edac.c index df6575f1430d..682288ced4ac 100644 --- a/drivers/edac/cpc925_edac.c +++ b/drivers/edac/cpc925_edac.c @@ -562,7 +562,7 @@ static void cpc925_mc_check(struct mem_ctl_info *mci) if (apiexcp & UECC_EXCP_DETECTED) { cpc925_mc_printk(mci, KERN_INFO, "DRAM UECC Fault\n"); - edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, + edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, pfn, offset, 0, csrow, -1, -1, mci->ctl_name, ""); diff --git a/drivers/edac/e7xxx_edac.c b/drivers/edac/e7xxx_edac.c index 3cda79bc8b00..ece3aef16bb1 100644 --- a/drivers/edac/e7xxx_edac.c +++ b/drivers/edac/e7xxx_edac.c @@ -226,7 +226,7 @@ static void process_ce(struct mem_ctl_info *mci, struct e7xxx_error_info *info) static void process_ce_no_info(struct mem_ctl_info *mci) { edac_dbg(3, "\n"); - edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0, -1, -1, -1, + edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, 0, -1, -1, -1, "e7xxx CE log register overflow", ""); } diff --git a/drivers/edac/i3200_edac.c b/drivers/edac/i3200_edac.c index 022a70273ada..aa98b136f5d0 100644 --- a/drivers/edac/i3200_edac.c +++ b/drivers/edac/i3200_edac.c @@ -242,11 +242,11 @@ static void i3200_process_error_info(struct mem_ctl_info *mci, -1, -1, "i3000 UE", ""); } else if (log & I3200_ECCERRLOG_CE) { - edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, + edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, 0, 0, eccerrlog_syndrome(log), eccerrlog_row(channel, log), -1, -1, - "i3000 UE", ""); + "i3000 CE", ""); } } } diff --git a/drivers/edac/i82860_edac.c b/drivers/edac/i82860_edac.c index 3382f6344e42..4382343a7c60 100644 --- a/drivers/edac/i82860_edac.c +++ b/drivers/edac/i82860_edac.c @@ -124,7 +124,7 @@ static int i82860_process_error_info(struct mem_ctl_info *mci, dimm->location[0], dimm->location[1], -1, "i82860 UE", ""); else - edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, + edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, info->eap, 0, info->derrsyn, dimm->location[0], dimm->location[1], -1, "i82860 CE", ""); diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 64ecbb501c50..8590099ac148 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -41,6 +41,28 @@ struct efi __read_mostly efi = { }; EXPORT_SYMBOL(efi); +static bool disable_runtime; +static int __init setup_noefi(char *arg) +{ + disable_runtime = true; + return 0; +} +early_param("noefi", setup_noefi); + +bool efi_runtime_disabled(void) +{ + return disable_runtime; +} + +static int __init parse_efi_cmdline(char *str) +{ + if (parse_option_str(str, "noruntime")) + disable_runtime = true; + + return 0; +} +early_param("efi", parse_efi_cmdline); + static struct kobject *efi_kobj; static struct kobject *efivars_kobj; @@ -423,3 +445,60 @@ int __init efi_get_fdt_params(struct efi_fdt_params *params, int verbose) return ret; } #endif /* CONFIG_EFI_PARAMS_FROM_FDT */ + +static __initdata char memory_type_name[][20] = { + "Reserved", + "Loader Code", + "Loader Data", + "Boot Code", + "Boot Data", + "Runtime Code", + "Runtime Data", + "Conventional Memory", + "Unusable Memory", + "ACPI Reclaim Memory", + "ACPI Memory NVS", + "Memory Mapped I/O", + "MMIO Port Space", + "PAL Code" +}; + +char * __init efi_md_typeattr_format(char *buf, size_t size, + const efi_memory_desc_t *md) +{ + char *pos; + int type_len; + u64 attr; + + pos = buf; + if (md->type >= ARRAY_SIZE(memory_type_name)) + type_len = snprintf(pos, size, "[type=%u", md->type); + else + type_len = snprintf(pos, size, "[%-*s", + (int)(sizeof(memory_type_name[0]) - 1), + memory_type_name[md->type]); + if (type_len >= size) + return buf; + + pos += type_len; + size -= type_len; + + attr = md->attribute; + if (attr & ~(EFI_MEMORY_UC | EFI_MEMORY_WC | EFI_MEMORY_WT | + EFI_MEMORY_WB | EFI_MEMORY_UCE | EFI_MEMORY_WP | + EFI_MEMORY_RP | EFI_MEMORY_XP | EFI_MEMORY_RUNTIME)) + snprintf(pos, size, "|attr=0x%016llx]", + (unsigned long long)attr); + else + snprintf(pos, size, "|%3s|%2s|%2s|%2s|%3s|%2s|%2s|%2s|%2s]", + attr & EFI_MEMORY_RUNTIME ? "RUN" : "", + attr & EFI_MEMORY_XP ? "XP" : "", + attr & EFI_MEMORY_RP ? "RP" : "", + attr & EFI_MEMORY_WP ? "WP" : "", + attr & EFI_MEMORY_UCE ? "UCE" : "", + attr & EFI_MEMORY_WB ? "WB" : "", + attr & EFI_MEMORY_WT ? "WT" : "", + attr & EFI_MEMORY_WC ? "WC" : "", + attr & EFI_MEMORY_UC ? "UC" : ""); + return buf; +} diff --git a/drivers/firmware/efi/libstub/arm-stub.c b/drivers/firmware/efi/libstub/arm-stub.c index 480339b6b110..75ee05964cbc 100644 --- a/drivers/firmware/efi/libstub/arm-stub.c +++ b/drivers/firmware/efi/libstub/arm-stub.c @@ -226,6 +226,10 @@ unsigned long __init efi_entry(void *handle, efi_system_table_t *sys_table, goto fail_free_image; } + status = efi_parse_options(cmdline_ptr); + if (status != EFI_SUCCESS) + pr_efi_err(sys_table, "Failed to parse EFI cmdline options\n"); + /* * Unauthenticated device tree data is a security hazard, so * ignore 'dtb=' unless UEFI Secure Boot is disabled. diff --git a/drivers/firmware/efi/libstub/efi-stub-helper.c b/drivers/firmware/efi/libstub/efi-stub-helper.c index 32d5cca30f49..a920fec8fe88 100644 --- a/drivers/firmware/efi/libstub/efi-stub-helper.c +++ b/drivers/firmware/efi/libstub/efi-stub-helper.c @@ -15,8 +15,23 @@ #include "efistub.h" +/* + * Some firmware implementations have problems reading files in one go. + * A read chunk size of 1MB seems to work for most platforms. + * + * Unfortunately, reading files in chunks triggers *other* bugs on some + * platforms, so we provide a way to disable this workaround, which can + * be done by passing "efi=nochunk" on the EFI boot stub command line. + * + * If you experience issues with initrd images being corrupt it's worth + * trying efi=nochunk, but chunking is enabled by default because there + * are far more machines that require the workaround than those that + * break with it enabled. + */ #define EFI_READ_CHUNK_SIZE (1024 * 1024) +static unsigned long __chunk_size = EFI_READ_CHUNK_SIZE; + struct file_info { efi_file_handle_t *handle; u64 size; @@ -281,6 +296,49 @@ void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, efi_call_early(free_pages, addr, nr_pages); } +/* + * Parse the ASCII string 'cmdline' for EFI options, denoted by the efi= + * option, e.g. efi=nochunk. + * + * It should be noted that efi= is parsed in two very different + * environments, first in the early boot environment of the EFI boot + * stub, and subsequently during the kernel boot. + */ +efi_status_t efi_parse_options(char *cmdline) +{ + char *str; + + /* + * If no EFI parameters were specified on the cmdline we've got + * nothing to do. + */ + str = strstr(cmdline, "efi="); + if (!str) + return EFI_SUCCESS; + + /* Skip ahead to first argument */ + str += strlen("efi="); + + /* + * Remember, because efi= is also used by the kernel we need to + * skip over arguments we don't understand. + */ + while (*str) { + if (!strncmp(str, "nochunk", 7)) { + str += strlen("nochunk"); + __chunk_size = -1UL; + } + + /* Group words together, delimited by "," */ + while (*str && *str != ',') + str++; + + if (*str == ',') + str++; + } + + return EFI_SUCCESS; +} /* * Check the cmdline for a LILO-style file= arguments. @@ -423,8 +481,8 @@ efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, size = files[j].size; while (size) { unsigned long chunksize; - if (size > EFI_READ_CHUNK_SIZE) - chunksize = EFI_READ_CHUNK_SIZE; + if (size > __chunk_size) + chunksize = __chunk_size; else chunksize = size; diff --git a/drivers/firmware/efi/runtime-wrappers.c b/drivers/firmware/efi/runtime-wrappers.c index 10daa4bbb258..228bbf910461 100644 --- a/drivers/firmware/efi/runtime-wrappers.c +++ b/drivers/firmware/efi/runtime-wrappers.c @@ -14,11 +14,80 @@ * This file is released under the GPLv2. */ +#include <linux/bug.h> #include <linux/efi.h> -#include <linux/spinlock.h> /* spinlock_t */ +#include <linux/mutex.h> +#include <linux/spinlock.h> #include <asm/efi.h> /* + * According to section 7.1 of the UEFI spec, Runtime Services are not fully + * reentrant, and there are particular combinations of calls that need to be + * serialized. (source: UEFI Specification v2.4A) + * + * Table 31. Rules for Reentry Into Runtime Services + * +------------------------------------+-------------------------------+ + * | If previous call is busy in | Forbidden to call | + * +------------------------------------+-------------------------------+ + * | Any | SetVirtualAddressMap() | + * +------------------------------------+-------------------------------+ + * | ConvertPointer() | ConvertPointer() | + * +------------------------------------+-------------------------------+ + * | SetVariable() | ResetSystem() | + * | UpdateCapsule() | | + * | SetTime() | | + * | SetWakeupTime() | | + * | GetNextHighMonotonicCount() | | + * +------------------------------------+-------------------------------+ + * | GetVariable() | GetVariable() | + * | GetNextVariableName() | GetNextVariableName() | + * | SetVariable() | SetVariable() | + * | QueryVariableInfo() | QueryVariableInfo() | + * | UpdateCapsule() | UpdateCapsule() | + * | QueryCapsuleCapabilities() | QueryCapsuleCapabilities() | + * | GetNextHighMonotonicCount() | GetNextHighMonotonicCount() | + * +------------------------------------+-------------------------------+ + * | GetTime() | GetTime() | + * | SetTime() | SetTime() | + * | GetWakeupTime() | GetWakeupTime() | + * | SetWakeupTime() | SetWakeupTime() | + * +------------------------------------+-------------------------------+ + * + * Due to the fact that the EFI pstore may write to the variable store in + * interrupt context, we need to use a spinlock for at least the groups that + * contain SetVariable() and QueryVariableInfo(). That leaves little else, as + * none of the remaining functions are actually ever called at runtime. + * So let's just use a single spinlock to serialize all Runtime Services calls. + */ +static DEFINE_SPINLOCK(efi_runtime_lock); + +/* + * Some runtime services calls can be reentrant under NMI, even if the table + * above says they are not. (source: UEFI Specification v2.4A) + * + * Table 32. Functions that may be called after Machine Check, INIT and NMI + * +----------------------------+------------------------------------------+ + * | Function | Called after Machine Check, INIT and NMI | + * +----------------------------+------------------------------------------+ + * | GetTime() | Yes, even if previously busy. | + * | GetVariable() | Yes, even if previously busy | + * | GetNextVariableName() | Yes, even if previously busy | + * | QueryVariableInfo() | Yes, even if previously busy | + * | SetVariable() | Yes, even if previously busy | + * | UpdateCapsule() | Yes, even if previously busy | + * | QueryCapsuleCapabilities() | Yes, even if previously busy | + * | ResetSystem() | Yes, even if previously busy | + * +----------------------------+------------------------------------------+ + * + * In order to prevent deadlocks under NMI, the wrappers for these functions + * may only grab the efi_runtime_lock or rtc_lock spinlocks if !efi_in_nmi(). + * However, not all of the services listed are reachable through NMI code paths, + * so the the special handling as suggested by the UEFI spec is only implemented + * for QueryVariableInfo() and SetVariable(), as these can be reached in NMI + * context through efi_pstore_write(). + */ + +/* * As per commit ef68c8f87ed1 ("x86: Serialize EFI time accesses on rtc_lock"), * the EFI specification requires that callers of the time related runtime * functions serialize with other CMOS accesses in the kernel, as the EFI time @@ -32,7 +101,9 @@ static efi_status_t virt_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc) efi_status_t status; spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&efi_runtime_lock); status = efi_call_virt(get_time, tm, tc); + spin_unlock(&efi_runtime_lock); spin_unlock_irqrestore(&rtc_lock, flags); return status; } @@ -43,7 +114,9 @@ static efi_status_t virt_efi_set_time(efi_time_t *tm) efi_status_t status; spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&efi_runtime_lock); status = efi_call_virt(set_time, tm); + spin_unlock(&efi_runtime_lock); spin_unlock_irqrestore(&rtc_lock, flags); return status; } @@ -56,7 +129,9 @@ static efi_status_t virt_efi_get_wakeup_time(efi_bool_t *enabled, efi_status_t status; spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&efi_runtime_lock); status = efi_call_virt(get_wakeup_time, enabled, pending, tm); + spin_unlock(&efi_runtime_lock); spin_unlock_irqrestore(&rtc_lock, flags); return status; } @@ -67,7 +142,9 @@ static efi_status_t virt_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm) efi_status_t status; spin_lock_irqsave(&rtc_lock, flags); + spin_lock(&efi_runtime_lock); status = efi_call_virt(set_wakeup_time, enabled, tm); + spin_unlock(&efi_runtime_lock); spin_unlock_irqrestore(&rtc_lock, flags); return status; } @@ -78,14 +155,27 @@ static efi_status_t virt_efi_get_variable(efi_char16_t *name, unsigned long *data_size, void *data) { - return efi_call_virt(get_variable, name, vendor, attr, data_size, data); + unsigned long flags; + efi_status_t status; + + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(get_variable, name, vendor, attr, data_size, + data); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_get_next_variable(unsigned long *name_size, efi_char16_t *name, efi_guid_t *vendor) { - return efi_call_virt(get_next_variable, name_size, name, vendor); + unsigned long flags; + efi_status_t status; + + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(get_next_variable, name_size, name, vendor); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_set_variable(efi_char16_t *name, @@ -94,24 +184,61 @@ static efi_status_t virt_efi_set_variable(efi_char16_t *name, unsigned long data_size, void *data) { - return efi_call_virt(set_variable, name, vendor, attr, data_size, data); + unsigned long flags; + efi_status_t status; + + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(set_variable, name, vendor, attr, data_size, + data); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } +static efi_status_t +virt_efi_set_variable_nonblocking(efi_char16_t *name, efi_guid_t *vendor, + u32 attr, unsigned long data_size, + void *data) +{ + unsigned long flags; + efi_status_t status; + + if (!spin_trylock_irqsave(&efi_runtime_lock, flags)) + return EFI_NOT_READY; + + status = efi_call_virt(set_variable, name, vendor, attr, data_size, + data); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; +} + + static efi_status_t virt_efi_query_variable_info(u32 attr, u64 *storage_space, u64 *remaining_space, u64 *max_variable_size) { + unsigned long flags; + efi_status_t status; + if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION) return EFI_UNSUPPORTED; - return efi_call_virt(query_variable_info, attr, storage_space, - remaining_space, max_variable_size); + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(query_variable_info, attr, storage_space, + remaining_space, max_variable_size); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_get_next_high_mono_count(u32 *count) { - return efi_call_virt(get_next_high_mono_count, count); + unsigned long flags; + efi_status_t status; + + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(get_next_high_mono_count, count); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static void virt_efi_reset_system(int reset_type, @@ -119,17 +246,27 @@ static void virt_efi_reset_system(int reset_type, unsigned long data_size, efi_char16_t *data) { + unsigned long flags; + + spin_lock_irqsave(&efi_runtime_lock, flags); __efi_call_virt(reset_system, reset_type, status, data_size, data); + spin_unlock_irqrestore(&efi_runtime_lock, flags); } static efi_status_t virt_efi_update_capsule(efi_capsule_header_t **capsules, unsigned long count, unsigned long sg_list) { + unsigned long flags; + efi_status_t status; + if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION) return EFI_UNSUPPORTED; - return efi_call_virt(update_capsule, capsules, count, sg_list); + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(update_capsule, capsules, count, sg_list); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules, @@ -137,11 +274,17 @@ static efi_status_t virt_efi_query_capsule_caps(efi_capsule_header_t **capsules, u64 *max_size, int *reset_type) { + unsigned long flags; + efi_status_t status; + if (efi.runtime_version < EFI_2_00_SYSTEM_TABLE_REVISION) return EFI_UNSUPPORTED; - return efi_call_virt(query_capsule_caps, capsules, count, max_size, - reset_type); + spin_lock_irqsave(&efi_runtime_lock, flags); + status = efi_call_virt(query_capsule_caps, capsules, count, max_size, + reset_type); + spin_unlock_irqrestore(&efi_runtime_lock, flags); + return status; } void efi_native_runtime_setup(void) @@ -153,6 +296,7 @@ void efi_native_runtime_setup(void) efi.get_variable = virt_efi_get_variable; efi.get_next_variable = virt_efi_get_next_variable; efi.set_variable = virt_efi_set_variable; + efi.set_variable_nonblocking = virt_efi_set_variable_nonblocking; efi.get_next_high_mono_count = virt_efi_get_next_high_mono_count; efi.reset_system = virt_efi_reset_system; efi.query_variable_info = virt_efi_query_variable_info; diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c index 5abe943e3404..70a0fb10517f 100644 --- a/drivers/firmware/efi/vars.c +++ b/drivers/firmware/efi/vars.c @@ -321,11 +321,11 @@ static unsigned long var_name_strnsize(efi_char16_t *variable_name, * Print a warning when duplicate EFI variables are encountered and * disable the sysfs workqueue since the firmware is buggy. */ -static void dup_variable_bug(efi_char16_t *s16, efi_guid_t *vendor_guid, +static void dup_variable_bug(efi_char16_t *str16, efi_guid_t *vendor_guid, unsigned long len16) { size_t i, len8 = len16 / sizeof(efi_char16_t); - char *s8; + char *str8; /* * Disable the workqueue since the algorithm it uses for @@ -334,16 +334,16 @@ static void dup_variable_bug(efi_char16_t *s16, efi_guid_t *vendor_guid, */ efivar_wq_enabled = false; - s8 = kzalloc(len8, GFP_KERNEL); - if (!s8) + str8 = kzalloc(len8, GFP_KERNEL); + if (!str8) return; for (i = 0; i < len8; i++) - s8[i] = s16[i]; + str8[i] = str16[i]; printk(KERN_WARNING "efivars: duplicate variable: %s-%pUl\n", - s8, vendor_guid); - kfree(s8); + str8, vendor_guid); + kfree(str8); } /** @@ -595,6 +595,39 @@ int efivar_entry_set(struct efivar_entry *entry, u32 attributes, } EXPORT_SYMBOL_GPL(efivar_entry_set); +/* + * efivar_entry_set_nonblocking - call set_variable_nonblocking() + * + * This function is guaranteed to not block and is suitable for calling + * from crash/panic handlers. + * + * Crucially, this function will not block if it cannot acquire + * __efivars->lock. Instead, it returns -EBUSY. + */ +static int +efivar_entry_set_nonblocking(efi_char16_t *name, efi_guid_t vendor, + u32 attributes, unsigned long size, void *data) +{ + const struct efivar_operations *ops = __efivars->ops; + unsigned long flags; + efi_status_t status; + + if (!spin_trylock_irqsave(&__efivars->lock, flags)) + return -EBUSY; + + status = check_var_size(attributes, size + ucs2_strsize(name, 1024)); + if (status != EFI_SUCCESS) { + spin_unlock_irqrestore(&__efivars->lock, flags); + return -ENOSPC; + } + + status = ops->set_variable_nonblocking(name, &vendor, attributes, + size, data); + + spin_unlock_irqrestore(&__efivars->lock, flags); + return efi_status_to_err(status); +} + /** * efivar_entry_set_safe - call set_variable() if enough space in firmware * @name: buffer containing the variable name @@ -622,6 +655,20 @@ int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, if (!ops->query_variable_store) return -ENOSYS; + /* + * If the EFI variable backend provides a non-blocking + * ->set_variable() operation and we're in a context where we + * cannot block, then we need to use it to avoid live-locks, + * since the implication is that the regular ->set_variable() + * will block. + * + * If no ->set_variable_nonblocking() is provided then + * ->set_variable() is assumed to be non-blocking. + */ + if (!block && ops->set_variable_nonblocking) + return efivar_entry_set_nonblocking(name, vendor, attributes, + size, data); + if (!block) { if (!spin_trylock_irqsave(&__efivars->lock, flags)) return -EBUSY; diff --git a/drivers/gpu/drm/cirrus/cirrus_drv.c b/drivers/gpu/drm/cirrus/cirrus_drv.c index e705335101a5..c2a1cba1e984 100644 --- a/drivers/gpu/drm/cirrus/cirrus_drv.c +++ b/drivers/gpu/drm/cirrus/cirrus_drv.c @@ -32,6 +32,8 @@ static struct drm_driver driver; static const struct pci_device_id pciidlist[] = { { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, 0x1af4, 0x1100, 0, 0, 0 }, + { PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_5446, PCI_VENDOR_ID_XEN, + 0x0001, 0, 0, 0 }, {0,} }; diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 3201986bf25e..f66392b6e287 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1711,7 +1711,7 @@ static irqreturn_t gen8_gt_irq_handler(struct drm_device *dev, #define HPD_STORM_DETECT_PERIOD 1000 #define HPD_STORM_THRESHOLD 5 -static int ilk_port_to_hotplug_shift(enum port port) +static int pch_port_to_hotplug_shift(enum port port) { switch (port) { case PORT_A: @@ -1727,7 +1727,7 @@ static int ilk_port_to_hotplug_shift(enum port port) } } -static int g4x_port_to_hotplug_shift(enum port port) +static int i915_port_to_hotplug_shift(enum port port) { switch (port) { case PORT_A: @@ -1785,12 +1785,12 @@ static inline void intel_hpd_irq_handler(struct drm_device *dev, if (port && dev_priv->hpd_irq_port[port]) { bool long_hpd; - if (IS_G4X(dev)) { - dig_shift = g4x_port_to_hotplug_shift(port); - long_hpd = (hotplug_trigger >> dig_shift) & PORTB_HOTPLUG_LONG_DETECT; - } else { - dig_shift = ilk_port_to_hotplug_shift(port); + if (HAS_PCH_SPLIT(dev)) { + dig_shift = pch_port_to_hotplug_shift(port); long_hpd = (dig_hotplug_reg >> dig_shift) & PORTB_HOTPLUG_LONG_DETECT; + } else { + dig_shift = i915_port_to_hotplug_shift(port); + long_hpd = (hotplug_trigger >> dig_shift) & PORTB_HOTPLUG_LONG_DETECT; } DRM_DEBUG_DRIVER("digital hpd port %c - %s\n", @@ -3458,12 +3458,13 @@ static void gen8_irq_reset(struct drm_device *dev) void gen8_irq_power_well_post_enable(struct drm_i915_private *dev_priv) { unsigned long irqflags; + uint32_t extra_ier = GEN8_PIPE_VBLANK | GEN8_PIPE_FIFO_UNDERRUN; spin_lock_irqsave(&dev_priv->irq_lock, irqflags); GEN8_IRQ_INIT_NDX(DE_PIPE, PIPE_B, dev_priv->de_irq_mask[PIPE_B], - ~dev_priv->de_irq_mask[PIPE_B]); + ~dev_priv->de_irq_mask[PIPE_B] | extra_ier); GEN8_IRQ_INIT_NDX(DE_PIPE, PIPE_C, dev_priv->de_irq_mask[PIPE_C], - ~dev_priv->de_irq_mask[PIPE_C]); + ~dev_priv->de_irq_mask[PIPE_C] | extra_ier); spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); } diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 507370513f3d..c9e220963a78 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -73,9 +73,6 @@ static const uint32_t intel_cursor_formats[] = { DRM_FORMAT_ARGB8888, }; -#define DIV_ROUND_CLOSEST_ULL(ll, d) \ -({ unsigned long long _tmp = (ll)+(d)/2; do_div(_tmp, d); _tmp; }) - static void intel_increase_pllclock(struct drm_device *dev, enum pipe pipe); static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on); @@ -12357,27 +12354,36 @@ static void intel_setup_outputs(struct drm_device *dev) if (I915_READ(PCH_DP_D) & DP_DETECTED) intel_dp_init(dev, PCH_DP_D, PORT_D); } else if (IS_VALLEYVIEW(dev)) { - if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIB) & SDVO_DETECTED) { + /* + * The DP_DETECTED bit is the latched state of the DDC + * SDA pin at boot. However since eDP doesn't require DDC + * (no way to plug in a DP->HDMI dongle) the DDC pins for + * eDP ports may have been muxed to an alternate function. + * Thus we can't rely on the DP_DETECTED bit alone to detect + * eDP ports. Consult the VBT as well as DP_DETECTED to + * detect eDP ports. + */ + if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIB) & SDVO_DETECTED) intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIB, PORT_B); - if (I915_READ(VLV_DISPLAY_BASE + DP_B) & DP_DETECTED) - intel_dp_init(dev, VLV_DISPLAY_BASE + DP_B, PORT_B); - } + if (I915_READ(VLV_DISPLAY_BASE + DP_B) & DP_DETECTED || + intel_dp_is_edp(dev, PORT_B)) + intel_dp_init(dev, VLV_DISPLAY_BASE + DP_B, PORT_B); - if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED) { + if (I915_READ(VLV_DISPLAY_BASE + GEN4_HDMIC) & SDVO_DETECTED) intel_hdmi_init(dev, VLV_DISPLAY_BASE + GEN4_HDMIC, PORT_C); - if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED) - intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C, PORT_C); - } + if (I915_READ(VLV_DISPLAY_BASE + DP_C) & DP_DETECTED || + intel_dp_is_edp(dev, PORT_C)) + intel_dp_init(dev, VLV_DISPLAY_BASE + DP_C, PORT_C); if (IS_CHERRYVIEW(dev)) { - if (I915_READ(VLV_DISPLAY_BASE + CHV_HDMID) & SDVO_DETECTED) { + if (I915_READ(VLV_DISPLAY_BASE + CHV_HDMID) & SDVO_DETECTED) intel_hdmi_init(dev, VLV_DISPLAY_BASE + CHV_HDMID, PORT_D); - if (I915_READ(VLV_DISPLAY_BASE + DP_D) & DP_DETECTED) - intel_dp_init(dev, VLV_DISPLAY_BASE + DP_D, PORT_D); - } + /* eDP not supported on port D, so don't check VBT */ + if (I915_READ(VLV_DISPLAY_BASE + DP_D) & DP_DETECTED) + intel_dp_init(dev, VLV_DISPLAY_BASE + DP_D, PORT_D); } intel_dsi_init(dev); diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index 07ce04683c30..ba715229a540 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -35,6 +35,9 @@ #include <drm/drm_fb_helper.h> #include <drm/drm_dp_mst_helper.h> +#define DIV_ROUND_CLOSEST_ULL(ll, d) \ +({ unsigned long long _tmp = (ll)+(d)/2; do_div(_tmp, d); _tmp; }) + /** * _wait_for - magic (register) wait macro * diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 18784470a760..0e018cb49147 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -419,9 +419,8 @@ static uint32_t scale(uint32_t source_val, source_val = clamp(source_val, source_min, source_max); /* avoid overflows */ - target_val = (uint64_t)(source_val - source_min) * - (target_max - target_min); - do_div(target_val, source_max - source_min); + target_val = DIV_ROUND_CLOSEST_ULL((uint64_t)(source_val - source_min) * + (target_max - target_min), source_max - source_min); target_val += target_min; return target_val; diff --git a/drivers/gpu/drm/nouveau/core/engine/graph/ctxnv50.c b/drivers/gpu/drm/nouveau/core/engine/graph/ctxnv50.c index 552fdbd45ebe..1d0e33fb5f61 100644 --- a/drivers/gpu/drm/nouveau/core/engine/graph/ctxnv50.c +++ b/drivers/gpu/drm/nouveau/core/engine/graph/ctxnv50.c @@ -113,6 +113,8 @@ #define IS_NVA3F(x) (((x) > 0xa0 && (x) < 0xaa) || (x) == 0xaf) #define IS_NVAAF(x) ((x) >= 0xaa && (x) <= 0xac) +#include <subdev/fb.h> + /* * This code deals with PGRAPH contexts on NV50 family cards. Like NV40, it's * the GPU itself that does context-switching, but it needs a special @@ -569,8 +571,12 @@ nv50_graph_construct_mmio(struct nouveau_grctx *ctx) gr_def(ctx, 0x407d08, 0x00010040); else if (device->chipset < 0xa0) gr_def(ctx, 0x407d08, 0x00390040); - else - gr_def(ctx, 0x407d08, 0x003d0040); + else { + if (nouveau_fb(device)->ram->type != NV_MEM_TYPE_GDDR5) + gr_def(ctx, 0x407d08, 0x003d0040); + else + gr_def(ctx, 0x407d08, 0x003c0040); + } gr_def(ctx, 0x407d0c, 0x00000022); } diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.c b/drivers/gpu/drm/nouveau/nouveau_chan.c index 589dbb582da2..fd3dbd59d73e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_chan.c +++ b/drivers/gpu/drm/nouveau/nouveau_chan.c @@ -400,15 +400,20 @@ nouveau_channel_new(struct nouveau_drm *drm, struct nvif_device *device, struct nouveau_channel **pchan) { struct nouveau_cli *cli = (void *)nvif_client(&device->base); + bool super; int ret; + /* hack until fencenv50 is fixed, and agp access relaxed */ + super = cli->base.super; + cli->base.super = true; + ret = nouveau_channel_ind(drm, device, handle, arg0, pchan); if (ret) { NV_PRINTK(debug, cli, "ib channel create, %d\n", ret); ret = nouveau_channel_dma(drm, device, handle, pchan); if (ret) { NV_PRINTK(debug, cli, "dma channel create, %d\n", ret); - return ret; + goto done; } } @@ -416,8 +421,9 @@ nouveau_channel_new(struct nouveau_drm *drm, struct nvif_device *device, if (ret) { NV_PRINTK(error, cli, "channel failed to initialise, %d\n", ret); nouveau_channel_del(pchan); - return ret; } - return 0; +done: + cli->base.super = super; + return ret; } diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c index af9e78546688..0d1396266857 100644 --- a/drivers/gpu/drm/qxl/qxl_display.c +++ b/drivers/gpu/drm/qxl/qxl_display.c @@ -572,7 +572,6 @@ static int qxl_crtc_mode_set(struct drm_crtc *crtc, struct qxl_framebuffer *qfb; struct qxl_bo *bo, *old_bo = NULL; struct qxl_crtc *qcrtc = to_qxl_crtc(crtc); - uint32_t width, height, base_offset; bool recreate_primary = false; int ret; int surf_id; @@ -602,9 +601,10 @@ static int qxl_crtc_mode_set(struct drm_crtc *crtc, if (qcrtc->index == 0) recreate_primary = true; - width = mode->hdisplay; - height = mode->vdisplay; - base_offset = 0; + if (bo->surf.stride * bo->surf.height > qdev->vram_size) { + DRM_ERROR("Mode doesn't fit in vram size (vgamem)"); + return -EINVAL; + } ret = qxl_bo_reserve(bo, false); if (ret != 0) @@ -618,10 +618,10 @@ static int qxl_crtc_mode_set(struct drm_crtc *crtc, if (recreate_primary) { qxl_io_destroy_primary(qdev); qxl_io_log(qdev, - "recreate primary: %dx%d (was %dx%d,%d,%d)\n", - width, height, bo->surf.width, - bo->surf.height, bo->surf.stride, bo->surf.format); - qxl_io_create_primary(qdev, base_offset, bo); + "recreate primary: %dx%d,%d,%d\n", + bo->surf.width, bo->surf.height, + bo->surf.stride, bo->surf.format); + qxl_io_create_primary(qdev, 0, bo); bo->is_primary = true; } diff --git a/drivers/gpu/drm/radeon/btc_dpm.c b/drivers/gpu/drm/radeon/btc_dpm.c index 300d971187c4..0b2929de9f41 100644 --- a/drivers/gpu/drm/radeon/btc_dpm.c +++ b/drivers/gpu/drm/radeon/btc_dpm.c @@ -24,6 +24,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "btcd.h" #include "r600_dpm.h" #include "cypress_dpm.h" @@ -1170,6 +1171,23 @@ static const struct radeon_blacklist_clocks btc_blacklist_clocks[] = { 25000, 30000, RADEON_SCLK_UP } }; +void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table, + u32 *max_clock) +{ + u32 i, clock = 0; + + if ((table == NULL) || (table->count == 0)) { + *max_clock = clock; + return; + } + + for (i = 0; i < table->count; i++) { + if (clock < table->entries[i].clk) + clock = table->entries[i].clk; + } + *max_clock = clock; +} + void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table, u32 clock, u16 max_voltage, u16 *voltage) { diff --git a/drivers/gpu/drm/radeon/btc_dpm.h b/drivers/gpu/drm/radeon/btc_dpm.h index 1a15e0e41950..3b6f12b7760b 100644 --- a/drivers/gpu/drm/radeon/btc_dpm.h +++ b/drivers/gpu/drm/radeon/btc_dpm.h @@ -46,6 +46,8 @@ void btc_adjust_clock_combinations(struct radeon_device *rdev, struct rv7xx_pl *pl); void btc_apply_voltage_dependency_rules(struct radeon_clock_voltage_dependency_table *table, u32 clock, u16 max_voltage, u16 *voltage); +void btc_get_max_clock_from_voltage_dependency_table(struct radeon_clock_voltage_dependency_table *table, + u32 *max_clock); void btc_apply_voltage_delta_rules(struct radeon_device *rdev, u16 max_vddc, u16 max_vddci, u16 *vddc, u16 *vddci); diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c index f5c8c0445a94..11a55e9dad7f 100644 --- a/drivers/gpu/drm/radeon/ci_dpm.c +++ b/drivers/gpu/drm/radeon/ci_dpm.c @@ -24,6 +24,7 @@ #include <linux/firmware.h> #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "radeon_ucode.h" #include "cikd.h" #include "r600_dpm.h" diff --git a/drivers/gpu/drm/radeon/cik_sdma.c b/drivers/gpu/drm/radeon/cik_sdma.c index c77dad1a4576..4e8432d07f15 100644 --- a/drivers/gpu/drm/radeon/cik_sdma.c +++ b/drivers/gpu/drm/radeon/cik_sdma.c @@ -611,16 +611,19 @@ int cik_sdma_ring_test(struct radeon_device *rdev, { unsigned i; int r; - void __iomem *ptr = (void *)rdev->vram_scratch.ptr; + unsigned index; u32 tmp; + u64 gpu_addr; - if (!ptr) { - DRM_ERROR("invalid vram scratch pointer\n"); - return -EINVAL; - } + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + index = R600_WB_DMA_RING_TEST_OFFSET; + else + index = CAYMAN_WB_DMA1_RING_TEST_OFFSET; + + gpu_addr = rdev->wb.gpu_addr + index; tmp = 0xCAFEDEAD; - writel(tmp, ptr); + rdev->wb.wb[index/4] = cpu_to_le32(tmp); r = radeon_ring_lock(rdev, ring, 5); if (r) { @@ -628,14 +631,14 @@ int cik_sdma_ring_test(struct radeon_device *rdev, return r; } radeon_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_WRITE, SDMA_WRITE_SUB_OPCODE_LINEAR, 0)); - radeon_ring_write(ring, rdev->vram_scratch.gpu_addr & 0xfffffffc); - radeon_ring_write(ring, upper_32_bits(rdev->vram_scratch.gpu_addr)); + radeon_ring_write(ring, lower_32_bits(gpu_addr)); + radeon_ring_write(ring, upper_32_bits(gpu_addr)); radeon_ring_write(ring, 1); /* number of DWs to follow */ radeon_ring_write(ring, 0xDEADBEEF); radeon_ring_unlock_commit(rdev, ring, false); for (i = 0; i < rdev->usec_timeout; i++) { - tmp = readl(ptr); + tmp = le32_to_cpu(rdev->wb.wb[index/4]); if (tmp == 0xDEADBEEF) break; DRM_UDELAY(1); diff --git a/drivers/gpu/drm/radeon/cypress_dpm.c b/drivers/gpu/drm/radeon/cypress_dpm.c index 47d31e915758..9aad0327e4d1 100644 --- a/drivers/gpu/drm/radeon/cypress_dpm.c +++ b/drivers/gpu/drm/radeon/cypress_dpm.c @@ -24,6 +24,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "evergreend.h" #include "r600_dpm.h" #include "cypress_dpm.h" diff --git a/drivers/gpu/drm/radeon/dce3_1_afmt.c b/drivers/gpu/drm/radeon/dce3_1_afmt.c index 950af153f30e..2fe8cfc966d9 100644 --- a/drivers/gpu/drm/radeon/dce3_1_afmt.c +++ b/drivers/gpu/drm/radeon/dce3_1_afmt.c @@ -32,7 +32,7 @@ static void dce3_2_afmt_write_speaker_allocation(struct drm_encoder *encoder) struct drm_connector *connector; struct radeon_connector *radeon_connector = NULL; u32 tmp; - u8 *sadb; + u8 *sadb = NULL; int sad_count; list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) { @@ -49,8 +49,8 @@ static void dce3_2_afmt_write_speaker_allocation(struct drm_encoder *encoder) sad_count = drm_edid_to_speaker_allocation(radeon_connector->edid, &sadb); if (sad_count < 0) { - DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sad_count); - return; + DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n", sad_count); + sad_count = 0; } /* program the speaker allocation */ diff --git a/drivers/gpu/drm/radeon/dce6_afmt.c b/drivers/gpu/drm/radeon/dce6_afmt.c index c0bbf68dbc27..f312edf4d50e 100644 --- a/drivers/gpu/drm/radeon/dce6_afmt.c +++ b/drivers/gpu/drm/radeon/dce6_afmt.c @@ -155,7 +155,7 @@ void dce6_afmt_write_speaker_allocation(struct drm_encoder *encoder) struct drm_connector *connector; struct radeon_connector *radeon_connector = NULL; u32 offset, tmp; - u8 *sadb; + u8 *sadb = NULL; int sad_count; if (!dig || !dig->afmt || !dig->afmt->pin) @@ -176,9 +176,9 @@ void dce6_afmt_write_speaker_allocation(struct drm_encoder *encoder) } sad_count = drm_edid_to_speaker_allocation(radeon_connector_edid(connector), &sadb); - if (sad_count <= 0) { - DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sad_count); - return; + if (sad_count < 0) { + DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n", sad_count); + sad_count = 0; } /* program the speaker allocation */ diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c index 2514d659b1ba..53abd9b17a50 100644 --- a/drivers/gpu/drm/radeon/evergreen_hdmi.c +++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c @@ -133,7 +133,7 @@ static void dce4_afmt_write_speaker_allocation(struct drm_encoder *encoder) struct drm_connector *connector; struct radeon_connector *radeon_connector = NULL; u32 tmp; - u8 *sadb; + u8 *sadb = NULL; int sad_count; list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) { @@ -149,9 +149,9 @@ static void dce4_afmt_write_speaker_allocation(struct drm_encoder *encoder) } sad_count = drm_edid_to_speaker_allocation(radeon_connector_edid(connector), &sadb); - if (sad_count <= 0) { - DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sad_count); - return; + if (sad_count < 0) { + DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n", sad_count); + sad_count = 0; } /* program the speaker allocation */ diff --git a/drivers/gpu/drm/radeon/ni_dpm.c b/drivers/gpu/drm/radeon/ni_dpm.c index 715b181c6243..6d2f16cf2c1c 100644 --- a/drivers/gpu/drm/radeon/ni_dpm.c +++ b/drivers/gpu/drm/radeon/ni_dpm.c @@ -23,6 +23,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "nid.h" #include "r600_dpm.h" #include "ni_dpm.h" diff --git a/drivers/gpu/drm/radeon/r600_dma.c b/drivers/gpu/drm/radeon/r600_dma.c index 100189ec5fa8..aabc343b9a8f 100644 --- a/drivers/gpu/drm/radeon/r600_dma.c +++ b/drivers/gpu/drm/radeon/r600_dma.c @@ -232,16 +232,19 @@ int r600_dma_ring_test(struct radeon_device *rdev, { unsigned i; int r; - void __iomem *ptr = (void *)rdev->vram_scratch.ptr; + unsigned index; u32 tmp; + u64 gpu_addr; - if (!ptr) { - DRM_ERROR("invalid vram scratch pointer\n"); - return -EINVAL; - } + if (ring->idx == R600_RING_TYPE_DMA_INDEX) + index = R600_WB_DMA_RING_TEST_OFFSET; + else + index = CAYMAN_WB_DMA1_RING_TEST_OFFSET; + + gpu_addr = rdev->wb.gpu_addr + index; tmp = 0xCAFEDEAD; - writel(tmp, ptr); + rdev->wb.wb[index/4] = cpu_to_le32(tmp); r = radeon_ring_lock(rdev, ring, 4); if (r) { @@ -249,13 +252,13 @@ int r600_dma_ring_test(struct radeon_device *rdev, return r; } radeon_ring_write(ring, DMA_PACKET(DMA_PACKET_WRITE, 0, 0, 1)); - radeon_ring_write(ring, rdev->vram_scratch.gpu_addr & 0xfffffffc); - radeon_ring_write(ring, upper_32_bits(rdev->vram_scratch.gpu_addr) & 0xff); + radeon_ring_write(ring, lower_32_bits(gpu_addr)); + radeon_ring_write(ring, upper_32_bits(gpu_addr) & 0xff); radeon_ring_write(ring, 0xDEADBEEF); radeon_ring_unlock_commit(rdev, ring, false); for (i = 0; i < rdev->usec_timeout; i++) { - tmp = readl(ptr); + tmp = le32_to_cpu(rdev->wb.wb[index/4]); if (tmp == 0xDEADBEEF) break; DRM_UDELAY(1); diff --git a/drivers/gpu/drm/radeon/r600_dpm.c b/drivers/gpu/drm/radeon/r600_dpm.c index 9c61b74ef441..f6309bd23e01 100644 --- a/drivers/gpu/drm/radeon/r600_dpm.c +++ b/drivers/gpu/drm/radeon/r600_dpm.c @@ -24,6 +24,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "r600d.h" #include "r600_dpm.h" #include "atom.h" diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index f7c4b226a284..a9717b3fbf1b 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1133,6 +1133,8 @@ struct radeon_wb { #define R600_WB_EVENT_OFFSET 3072 #define CIK_WB_CP1_WPTR_OFFSET 3328 #define CIK_WB_CP2_WPTR_OFFSET 3584 +#define R600_WB_DMA_RING_TEST_OFFSET 3588 +#define CAYMAN_WB_DMA1_RING_TEST_OFFSET 3592 /** * struct radeon_pm - power management datas diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index f41cc1538e48..ea2676954dde 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -1130,7 +1130,7 @@ static void radeon_check_arguments(struct radeon_device *rdev) if (radeon_vm_block_size == -1) { /* Total bits covered by PD + PTs */ - unsigned bits = ilog2(radeon_vm_size) + 17; + unsigned bits = ilog2(radeon_vm_size) + 18; /* Make sure the PD is 4K in size up to 8GB address space. Above that split equal between PD and PTs */ diff --git a/drivers/gpu/drm/radeon/rs780_dpm.c b/drivers/gpu/drm/radeon/rs780_dpm.c index 02f7710de470..9031f4b69824 100644 --- a/drivers/gpu/drm/radeon/rs780_dpm.c +++ b/drivers/gpu/drm/radeon/rs780_dpm.c @@ -24,6 +24,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "rs780d.h" #include "r600_dpm.h" #include "rs780_dpm.h" diff --git a/drivers/gpu/drm/radeon/rv6xx_dpm.c b/drivers/gpu/drm/radeon/rv6xx_dpm.c index e7045b085715..6a5c233361e9 100644 --- a/drivers/gpu/drm/radeon/rv6xx_dpm.c +++ b/drivers/gpu/drm/radeon/rv6xx_dpm.c @@ -24,6 +24,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "rv6xxd.h" #include "r600_dpm.h" #include "rv6xx_dpm.h" diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c index 3c76e1dcdf04..755a8f96fe46 100644 --- a/drivers/gpu/drm/radeon/rv770_dpm.c +++ b/drivers/gpu/drm/radeon/rv770_dpm.c @@ -24,6 +24,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "rv770d.h" #include "r600_dpm.h" #include "rv770_dpm.h" diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index 9e4d5d7d348f..a53c2e79d9cb 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -23,6 +23,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "sid.h" #include "r600_dpm.h" #include "si_dpm.h" @@ -2916,6 +2917,7 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev, bool disable_sclk_switching = false; u32 mclk, sclk; u16 vddc, vddci; + u32 max_sclk_vddc, max_mclk_vddci, max_mclk_vddc; int i; if ((rdev->pm.dpm.new_active_crtc_count > 1) || @@ -2949,6 +2951,29 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev, } } + /* limit clocks to max supported clocks based on voltage dependency tables */ + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk, + &max_sclk_vddc); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddci_dependency_on_mclk, + &max_mclk_vddci); + btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk, + &max_mclk_vddc); + + for (i = 0; i < ps->performance_level_count; i++) { + if (max_sclk_vddc) { + if (ps->performance_levels[i].sclk > max_sclk_vddc) + ps->performance_levels[i].sclk = max_sclk_vddc; + } + if (max_mclk_vddci) { + if (ps->performance_levels[i].mclk > max_mclk_vddci) + ps->performance_levels[i].mclk = max_mclk_vddci; + } + if (max_mclk_vddc) { + if (ps->performance_levels[i].mclk > max_mclk_vddc) + ps->performance_levels[i].mclk = max_mclk_vddc; + } + } + /* XXX validate the min clocks required for display */ if (disable_mclk_switching) { diff --git a/drivers/gpu/drm/radeon/sumo_dpm.c b/drivers/gpu/drm/radeon/sumo_dpm.c index 3f0e8d7b8dbe..1f8a8833e1be 100644 --- a/drivers/gpu/drm/radeon/sumo_dpm.c +++ b/drivers/gpu/drm/radeon/sumo_dpm.c @@ -23,6 +23,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "sumod.h" #include "r600_dpm.h" #include "cypress_dpm.h" diff --git a/drivers/gpu/drm/radeon/trinity_dpm.c b/drivers/gpu/drm/radeon/trinity_dpm.c index 57f780053b3e..b4ec5c4e7969 100644 --- a/drivers/gpu/drm/radeon/trinity_dpm.c +++ b/drivers/gpu/drm/radeon/trinity_dpm.c @@ -23,6 +23,7 @@ #include "drmP.h" #include "radeon.h" +#include "radeon_asic.h" #include "trinityd.h" #include "r600_dpm.h" #include "trinity_dpm.h" diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index 8f5cec67c47d..d395b0bef73b 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -709,6 +709,7 @@ out: static int ttm_mem_evict_first(struct ttm_bo_device *bdev, uint32_t mem_type, + const struct ttm_place *place, bool interruptible, bool no_wait_gpu) { @@ -720,8 +721,21 @@ static int ttm_mem_evict_first(struct ttm_bo_device *bdev, spin_lock(&glob->lru_lock); list_for_each_entry(bo, &man->lru, lru) { ret = __ttm_bo_reserve(bo, false, true, false, NULL); - if (!ret) + if (!ret) { + if (place && (place->fpfn || place->lpfn)) { + /* Don't evict this BO if it's outside of the + * requested placement range + */ + if (place->fpfn >= (bo->mem.start + bo->mem.size) || + (place->lpfn && place->lpfn <= bo->mem.start)) { + __ttm_bo_unreserve(bo); + ret = -EBUSY; + continue; + } + } + break; + } } if (ret) { @@ -782,7 +796,7 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo, return ret; if (mem->mm_node) break; - ret = ttm_mem_evict_first(bdev, mem_type, + ret = ttm_mem_evict_first(bdev, mem_type, place, interruptible, no_wait_gpu); if (unlikely(ret != 0)) return ret; @@ -994,9 +1008,9 @@ static bool ttm_bo_mem_compat(struct ttm_placement *placement, for (i = 0; i < placement->num_placement; i++) { const struct ttm_place *heap = &placement->placement[i]; - if (mem->mm_node && heap->lpfn != 0 && + if (mem->mm_node && (mem->start < heap->fpfn || - mem->start + mem->num_pages > heap->lpfn)) + (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) continue; *new_flags = heap->flags; @@ -1007,9 +1021,9 @@ static bool ttm_bo_mem_compat(struct ttm_placement *placement, for (i = 0; i < placement->num_busy_placement; i++) { const struct ttm_place *heap = &placement->busy_placement[i]; - if (mem->mm_node && heap->lpfn != 0 && + if (mem->mm_node && (mem->start < heap->fpfn || - mem->start + mem->num_pages > heap->lpfn)) + (heap->lpfn != 0 && (mem->start + mem->num_pages) > heap->lpfn))) continue; *new_flags = heap->flags; @@ -1233,7 +1247,7 @@ static int ttm_bo_force_list_clean(struct ttm_bo_device *bdev, spin_lock(&glob->lru_lock); while (!list_empty(&man->lru)) { spin_unlock(&glob->lru_lock); - ret = ttm_mem_evict_first(bdev, mem_type, false, false); + ret = ttm_mem_evict_first(bdev, mem_type, NULL, false, false); if (ret) { if (allow_errors) { return ret; diff --git a/drivers/hwmon/menf21bmc_hwmon.c b/drivers/hwmon/menf21bmc_hwmon.c index c92229d321c9..afc6b58eaa62 100644 --- a/drivers/hwmon/menf21bmc_hwmon.c +++ b/drivers/hwmon/menf21bmc_hwmon.c @@ -21,6 +21,7 @@ #include <linux/jiffies.h> #include <linux/slab.h> #include <linux/i2c.h> +#include <linux/err.h> #define DRV_NAME "menf21bmc_hwmon" diff --git a/drivers/media/common/saa7146/saa7146_core.c b/drivers/media/common/saa7146/saa7146_core.c index 97afee672d07..4418119cf707 100644 --- a/drivers/media/common/saa7146/saa7146_core.c +++ b/drivers/media/common/saa7146/saa7146_core.c @@ -364,6 +364,9 @@ static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent goto out; } + /* create a nice device name */ + sprintf(dev->name, "saa7146 (%d)", saa7146_num); + DEB_EE("pci:%p\n", pci); err = pci_enable_device(pci); @@ -438,9 +441,6 @@ static int saa7146_init_one(struct pci_dev *pci, const struct pci_device_id *ent /* the rest + print status message */ - /* create a nice device name */ - sprintf(dev->name, "saa7146 (%d)", saa7146_num); - pr_info("found saa7146 @ mem %p (revision %d, irq %d) (0x%04x,0x%04x)\n", dev->mem, dev->revision, pci->irq, pci->subsystem_vendor, pci->subsystem_device); diff --git a/drivers/media/pci/cx23885/cx23885-dvb.c b/drivers/media/pci/cx23885/cx23885-dvb.c index 13734b8c7917..4cb90317ff45 100644 --- a/drivers/media/pci/cx23885/cx23885-dvb.c +++ b/drivers/media/pci/cx23885/cx23885-dvb.c @@ -1600,6 +1600,7 @@ static int dvb_register(struct cx23885_tsport *port) break; /* attach tuner */ + memset(&m88ts2022_config, 0, sizeof(m88ts2022_config)); m88ts2022_config.fe = fe0->dvb.frontend; m88ts2022_config.clock = 27000000; memset(&info, 0, sizeof(struct i2c_board_info)); @@ -1635,6 +1636,7 @@ static int dvb_register(struct cx23885_tsport *port) /* port c - terrestrial/cable */ case 2: /* attach frontend */ + memset(&si2168_config, 0, sizeof(si2168_config)); si2168_config.i2c_adapter = &adapter; si2168_config.fe = &fe0->dvb.frontend; si2168_config.ts_mode = SI2168_TS_SERIAL; @@ -1654,6 +1656,7 @@ static int dvb_register(struct cx23885_tsport *port) port->i2c_client_demod = client_demod; /* attach tuner */ + memset(&si2157_config, 0, sizeof(si2157_config)); si2157_config.fe = fe0->dvb.frontend; memset(&info, 0, sizeof(struct i2c_board_info)); strlcpy(info.type, "si2157", I2C_NAME_SIZE); diff --git a/drivers/media/pci/tw68/Kconfig b/drivers/media/pci/tw68/Kconfig index 5425ba1e320d..95d5d5202048 100644 --- a/drivers/media/pci/tw68/Kconfig +++ b/drivers/media/pci/tw68/Kconfig @@ -1,7 +1,6 @@ config VIDEO_TW68 tristate "Techwell tw68x Video For Linux" depends on VIDEO_DEV && PCI && VIDEO_V4L2 - select I2C_ALGOBIT select VIDEOBUF2_DMA_SG ---help--- Support for Techwell tw68xx based frame grabber boards. diff --git a/drivers/media/pci/tw68/tw68-core.c b/drivers/media/pci/tw68/tw68-core.c index a6fb48cf7aae..63f0b64057cb 100644 --- a/drivers/media/pci/tw68/tw68-core.c +++ b/drivers/media/pci/tw68/tw68-core.c @@ -306,7 +306,7 @@ static int tw68_initdev(struct pci_dev *pci_dev, /* get irq */ err = devm_request_irq(&pci_dev->dev, pci_dev->irq, tw68_irq, - IRQF_SHARED | IRQF_DISABLED, dev->name, dev); + IRQF_SHARED, dev->name, dev); if (err < 0) { pr_err("%s: can't get IRQ %d\n", dev->name, pci_dev->irq); diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index bee9074ebc13..3aac88f1d54a 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -166,7 +166,7 @@ config VIDEO_MEM2MEM_DEINTERLACE config VIDEO_SAMSUNG_S5P_G2D tristate "Samsung S5P and EXYNOS4 G2D 2d graphics accelerator driver" depends on VIDEO_DEV && VIDEO_V4L2 - depends on PLAT_S5P || ARCH_EXYNOS || COMPILE_TEST + depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST depends on HAS_DMA select VIDEOBUF2_DMA_CONTIG select V4L2_MEM2MEM_DEV @@ -178,7 +178,7 @@ config VIDEO_SAMSUNG_S5P_G2D config VIDEO_SAMSUNG_S5P_JPEG tristate "Samsung S5P/Exynos3250/Exynos4 JPEG codec driver" depends on VIDEO_DEV && VIDEO_V4L2 - depends on PLAT_S5P || ARCH_EXYNOS || COMPILE_TEST + depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST depends on HAS_DMA select VIDEOBUF2_DMA_CONTIG select V4L2_MEM2MEM_DEV @@ -189,7 +189,7 @@ config VIDEO_SAMSUNG_S5P_JPEG config VIDEO_SAMSUNG_S5P_MFC tristate "Samsung S5P MFC Video Codec" depends on VIDEO_DEV && VIDEO_V4L2 - depends on PLAT_S5P || ARCH_EXYNOS || COMPILE_TEST + depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST depends on HAS_DMA select VIDEOBUF2_DMA_CONTIG default n diff --git a/drivers/media/platform/exynos4-is/Kconfig b/drivers/media/platform/exynos4-is/Kconfig index 77c951237744..b7b2e472240a 100644 --- a/drivers/media/platform/exynos4-is/Kconfig +++ b/drivers/media/platform/exynos4-is/Kconfig @@ -2,7 +2,7 @@ config VIDEO_SAMSUNG_EXYNOS4_IS bool "Samsung S5P/EXYNOS4 SoC series Camera Subsystem driver" depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API - depends on (PLAT_S5P || ARCH_EXYNOS || COMPILE_TEST) + depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST depends on OF && COMMON_CLK help Say Y here to enable camera host interface devices for diff --git a/drivers/media/platform/exynos4-is/fimc-core.c b/drivers/media/platform/exynos4-is/fimc-core.c index b70fd996d794..aee92d908e49 100644 --- a/drivers/media/platform/exynos4-is/fimc-core.c +++ b/drivers/media/platform/exynos4-is/fimc-core.c @@ -832,6 +832,7 @@ err: return -ENXIO; } +#if defined(CONFIG_PM_RUNTIME) || defined(CONFIG_PM_SLEEP) static int fimc_m2m_suspend(struct fimc_dev *fimc) { unsigned long flags; @@ -870,6 +871,7 @@ static int fimc_m2m_resume(struct fimc_dev *fimc) return 0; } +#endif /* CONFIG_PM_RUNTIME || CONFIG_PM_SLEEP */ static const struct of_device_id fimc_of_match[]; diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c index e525a7c8d885..6fcc7f072ace 100644 --- a/drivers/media/platform/s5p-jpeg/jpeg-core.c +++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c @@ -893,7 +893,7 @@ static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result, unsigned long buffer, unsigned long size, struct s5p_jpeg_ctx *ctx) { - int c, components, notfound; + int c, components = 0, notfound; unsigned int height, width, word, subsampling = 0; long length; struct s5p_jpeg_buffer jpeg_buffer; @@ -2632,6 +2632,7 @@ static int s5p_jpeg_remove(struct platform_device *pdev) return 0; } +#if defined(CONFIG_PM_RUNTIME) || defined(CONFIG_PM_SLEEP) static int s5p_jpeg_runtime_suspend(struct device *dev) { struct s5p_jpeg *jpeg = dev_get_drvdata(dev); @@ -2681,7 +2682,9 @@ static int s5p_jpeg_runtime_resume(struct device *dev) return 0; } +#endif /* CONFIG_PM_RUNTIME || CONFIG_PM_SLEEP */ +#ifdef CONFIG_PM_SLEEP static int s5p_jpeg_suspend(struct device *dev) { if (pm_runtime_suspended(dev)) @@ -2697,6 +2700,7 @@ static int s5p_jpeg_resume(struct device *dev) return s5p_jpeg_runtime_resume(dev); } +#endif static const struct dev_pm_ops s5p_jpeg_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(s5p_jpeg_suspend, s5p_jpeg_resume) diff --git a/drivers/media/platform/s5p-tv/Kconfig b/drivers/media/platform/s5p-tv/Kconfig index a9d56f8936b4..beb180e71ba0 100644 --- a/drivers/media/platform/s5p-tv/Kconfig +++ b/drivers/media/platform/s5p-tv/Kconfig @@ -9,7 +9,7 @@ config VIDEO_SAMSUNG_S5P_TV bool "Samsung TV driver for S5P platform" depends on PM_RUNTIME - depends on PLAT_S5P || ARCH_EXYNOS || COMPILE_TEST + depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST default n ---help--- Say Y here to enable selecting the TV output devices for diff --git a/drivers/media/platform/vivid/Kconfig b/drivers/media/platform/vivid/Kconfig index d71139a2ae00..c3090932f06d 100644 --- a/drivers/media/platform/vivid/Kconfig +++ b/drivers/media/platform/vivid/Kconfig @@ -1,8 +1,11 @@ config VIDEO_VIVID tristate "Virtual Video Test Driver" - depends on VIDEO_DEV && VIDEO_V4L2 && !SPARC32 && !SPARC64 + depends on VIDEO_DEV && VIDEO_V4L2 && !SPARC32 && !SPARC64 && FB select FONT_SUPPORT select FONT_8x16 + select FB_CFB_FILLRECT + select FB_CFB_COPYAREA + select FB_CFB_IMAGEBLIT select VIDEOBUF2_VMALLOC default n ---help--- diff --git a/drivers/media/platform/vivid/vivid-tpg.c b/drivers/media/platform/vivid/vivid-tpg.c index 0c6fa53fa646..cbcd6250e7b2 100644 --- a/drivers/media/platform/vivid/vivid-tpg.c +++ b/drivers/media/platform/vivid/vivid-tpg.c @@ -136,7 +136,7 @@ int tpg_alloc(struct tpg_data *tpg, unsigned max_w) tpg->black_line[plane] = vzalloc(max_w * pixelsz); if (!tpg->black_line[plane]) return -ENOMEM; - tpg->random_line[plane] = vzalloc(max_w * pixelsz); + tpg->random_line[plane] = vzalloc(max_w * 2 * pixelsz); if (!tpg->random_line[plane]) return -ENOMEM; } diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c index 6f28f6e02ea5..704397f3c106 100644 --- a/drivers/media/radio/wl128x/fmdrv_common.c +++ b/drivers/media/radio/wl128x/fmdrv_common.c @@ -1256,7 +1256,7 @@ static int fm_download_firmware(struct fmdev *fmdev, const u8 *fw_name) fmerr("Unable to read firmware(%s) content\n", fw_name); return ret; } - fmdbg("Firmware(%s) length : %d bytes\n", fw_name, fw_entry->size); + fmdbg("Firmware(%s) length : %zu bytes\n", fw_name, fw_entry->size); fw_data = (void *)fw_entry->data; fw_len = fw_entry->size; diff --git a/drivers/media/tuners/xc5000.c b/drivers/media/tuners/xc5000.c index e44c8aba6074..803a0e63d47e 100644 --- a/drivers/media/tuners/xc5000.c +++ b/drivers/media/tuners/xc5000.c @@ -1333,9 +1333,9 @@ static int xc5000_release(struct dvb_frontend *fe) if (priv) { cancel_delayed_work(&priv->timer_sleep); - hybrid_tuner_release_state(priv); if (priv->firmware) release_firmware(priv->firmware); + hybrid_tuner_release_state(priv); } mutex_unlock(&xc5000_list_mutex); diff --git a/drivers/media/usb/dvb-usb-v2/af9035.c b/drivers/media/usb/dvb-usb-v2/af9035.c index 00758c83eec7..1896ab218b11 100644 --- a/drivers/media/usb/dvb-usb-v2/af9035.c +++ b/drivers/media/usb/dvb-usb-v2/af9035.c @@ -193,8 +193,8 @@ static int af9035_wr_reg_mask(struct dvb_usb_device *d, u32 reg, u8 val, return af9035_wr_regs(d, reg, &val, 1); } -static int af9035_add_i2c_dev(struct dvb_usb_device *d, char *type, u8 addr, - void *platform_data, struct i2c_adapter *adapter) +static int af9035_add_i2c_dev(struct dvb_usb_device *d, const char *type, + u8 addr, void *platform_data, struct i2c_adapter *adapter) { int ret, num; struct state *state = d_to_priv(d); @@ -221,7 +221,7 @@ static int af9035_add_i2c_dev(struct dvb_usb_device *d, char *type, u8 addr, goto err; } - request_module(board_info.type); + request_module("%s", board_info.type); /* register I2C device */ client = i2c_new_device(adapter, &board_info); diff --git a/drivers/media/usb/dvb-usb-v2/anysee.c b/drivers/media/usb/dvb-usb-v2/anysee.c index d3c5f230e97a..ae917c042a52 100644 --- a/drivers/media/usb/dvb-usb-v2/anysee.c +++ b/drivers/media/usb/dvb-usb-v2/anysee.c @@ -630,8 +630,8 @@ error: return ret; } -static int anysee_add_i2c_dev(struct dvb_usb_device *d, char *type, u8 addr, - void *platform_data) +static int anysee_add_i2c_dev(struct dvb_usb_device *d, const char *type, + u8 addr, void *platform_data) { int ret, num; struct anysee_state *state = d_to_priv(d); @@ -659,7 +659,7 @@ static int anysee_add_i2c_dev(struct dvb_usb_device *d, char *type, u8 addr, goto err; } - request_module(board_info.type); + request_module("%s", board_info.type); /* register I2C device */ client = i2c_new_device(adapter, &board_info); diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c index b5e52fe7957a..901cf2b952d7 100644 --- a/drivers/media/usb/em28xx/em28xx-core.c +++ b/drivers/media/usb/em28xx/em28xx-core.c @@ -504,7 +504,7 @@ EXPORT_SYMBOL_GPL(em28xx_audio_analog_set); int em28xx_audio_setup(struct em28xx *dev) { int vid1, vid2, feat, cfg; - u32 vid; + u32 vid = 0; u8 i2s_samplerates; if (dev->chip_id == CHIP_ID_EM2870 || diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c index 581f6dad4ca9..23f8f6afa2e0 100644 --- a/drivers/media/usb/em28xx/em28xx-input.c +++ b/drivers/media/usb/em28xx/em28xx-input.c @@ -712,8 +712,10 @@ static int em28xx_ir_init(struct em28xx *dev) em28xx_info("Registering input extension\n"); ir = kzalloc(sizeof(*ir), GFP_KERNEL); + if (!ir) + return -ENOMEM; rc = rc_allocate_device(); - if (!ir || !rc) + if (!rc) goto error; /* record handles to ourself */ diff --git a/drivers/media/usb/hackrf/hackrf.c b/drivers/media/usb/hackrf/hackrf.c index 328b5ba47a0a..fd1fa412e094 100644 --- a/drivers/media/usb/hackrf/hackrf.c +++ b/drivers/media/usb/hackrf/hackrf.c @@ -932,7 +932,7 @@ static int hackrf_set_bandwidth(struct hackrf_dev *dev) dev->bandwidth->val = bandwidth; dev->bandwidth->cur.val = bandwidth; - dev_dbg(dev->dev, "bandwidth selected=%d\n", bandwidth_lut[i].freq); + dev_dbg(dev->dev, "bandwidth selected=%d\n", bandwidth); u16tmp = 0; u16tmp |= ((bandwidth >> 0) & 0xff) << 0; diff --git a/drivers/media/usb/usbvision/usbvision-video.c b/drivers/media/usb/usbvision/usbvision-video.c index 68bc9615660e..9bfa041e3316 100644 --- a/drivers/media/usb/usbvision/usbvision-video.c +++ b/drivers/media/usb/usbvision/usbvision-video.c @@ -446,6 +446,7 @@ static int usbvision_v4l2_close(struct file *file) if (usbvision->remove_pending) { printk(KERN_INFO "%s: Final disconnect\n", __func__); usbvision_release(usbvision); + return 0; } mutex_unlock(&usbvision->v4l2_lock); @@ -1221,6 +1222,7 @@ static int usbvision_radio_close(struct file *file) if (usbvision->remove_pending) { printk(KERN_INFO "%s: Final disconnect\n", __func__); usbvision_release(usbvision); + return err_code; } mutex_unlock(&usbvision->v4l2_lock); diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 60a8e2c3631e..378ae02e593b 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -318,7 +318,6 @@ static int uvc_v4l2_set_format(struct uvc_streaming *stream, stream->ctrl = probe; stream->cur_format = format; stream->cur_frame = frame; - stream->frame_size = fmt->fmt.pix.sizeimage; done: mutex_unlock(&stream->mutex); diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c index 9ace520bb079..df81b9c4faf1 100644 --- a/drivers/media/usb/uvc/uvc_video.c +++ b/drivers/media/usb/uvc/uvc_video.c @@ -1143,7 +1143,7 @@ static int uvc_video_encode_data(struct uvc_streaming *stream, static void uvc_video_validate_buffer(const struct uvc_streaming *stream, struct uvc_buffer *buf) { - if (stream->frame_size != buf->bytesused && + if (stream->ctrl.dwMaxVideoFrameSize != buf->bytesused && !(stream->cur_format->flags & UVC_FMT_FLAG_COMPRESSED)) buf->error = 1; } diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index 6f676c29ec09..864ada740360 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -457,7 +457,6 @@ struct uvc_streaming { struct uvc_format *def_format; struct uvc_format *cur_format; struct uvc_frame *cur_frame; - size_t frame_size; /* Protect access to ctrl, cur_format, cur_frame and hardware video * probe control. diff --git a/drivers/media/v4l2-core/videobuf-dma-contig.c b/drivers/media/v4l2-core/videobuf-dma-contig.c index bf80f0f7dfb8..e02353e340dd 100644 --- a/drivers/media/v4l2-core/videobuf-dma-contig.c +++ b/drivers/media/v4l2-core/videobuf-dma-contig.c @@ -305,6 +305,15 @@ static int __videobuf_mmap_mapper(struct videobuf_queue *q, /* Try to remap memory */ size = vma->vm_end - vma->vm_start; vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + + /* the "vm_pgoff" is just used in v4l2 to find the + * corresponding buffer data structure which is allocated + * earlier and it does not mean the offset from the physical + * buffer start address as usual. So set it to 0 to pass + * the sanity check in vm_iomap_memory(). + */ + vma->vm_pgoff = 0; + retval = vm_iomap_memory(vma, mem->dma_handle, size); if (retval) { dev_err(q->dev, "mmap: remap failed with error %d. ", diff --git a/drivers/pci/pcie/pme.c b/drivers/pci/pcie/pme.c index a9f9c46e5022..63fc63911295 100644 --- a/drivers/pci/pcie/pme.c +++ b/drivers/pci/pcie/pme.c @@ -397,6 +397,7 @@ static int pcie_pme_suspend(struct pcie_device *srv) struct pcie_pme_service_data *data = get_service_data(srv); struct pci_dev *port = srv->port; bool wakeup; + int ret; if (device_may_wakeup(&port->dev)) { wakeup = true; @@ -407,9 +408,10 @@ static int pcie_pme_suspend(struct pcie_device *srv) } spin_lock_irq(&data->lock); if (wakeup) { - enable_irq_wake(srv->irq); + ret = enable_irq_wake(srv->irq); data->suspend_level = PME_SUSPEND_WAKEUP; - } else { + } + if (!wakeup || ret) { struct pci_dev *port = srv->port; pcie_pme_interrupt_enable(port, false); diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c index 3611806c9cfd..3cb36693343a 100644 --- a/drivers/power/reset/at91-reset.c +++ b/drivers/power/reset/at91-reset.c @@ -100,11 +100,11 @@ static void at91sam9g45_restart(enum reboot_mode mode, const char *cmd) /* Disable SDRAM0 accesses */ "1: str %3, [%0, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t" /* Power down SDRAM0 */ - " str %4, [%0, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t" + " str %4, [%0, #" __stringify(AT91_DDRSDRC_LPR) "]\n\t" /* Disable SDRAM1 accesses */ " strne %3, [%1, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t" /* Power down SDRAM1 */ - " strne %4, [%1, #" __stringify(AT91_DDRSDRC_RTR) "]\n\t" + " strne %4, [%1, #" __stringify(AT91_DDRSDRC_LPR) "]\n\t" /* Reset CPU */ " str %5, [%2, #" __stringify(AT91_RSTC_CR) "]\n\t" diff --git a/drivers/regulator/rk808-regulator.c b/drivers/regulator/rk808-regulator.c index e305416d7697..196a5c8838c4 100644 --- a/drivers/regulator/rk808-regulator.c +++ b/drivers/regulator/rk808-regulator.c @@ -44,7 +44,7 @@ static const int rk808_buck_config_regs[] = { }; static const struct regulator_linear_range rk808_buck_voltage_ranges[] = { - REGULATOR_LINEAR_RANGE(700000, 0, 63, 12500), + REGULATOR_LINEAR_RANGE(712500, 0, 63, 12500), }; static const struct regulator_linear_range rk808_buck4_voltage_ranges[] = { diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 8cd0beebdc3f..94ae1798d48a 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -830,7 +830,7 @@ config RTC_DRV_DA9063 config RTC_DRV_EFI tristate "EFI RTC" - depends on EFI + depends on EFI && !X86 help If you say yes here you will get support for the EFI Real Time Clock. diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c index c384fec6d173..53b589dc34eb 100644 --- a/drivers/rtc/rtc-efi.c +++ b/drivers/rtc/rtc-efi.c @@ -236,3 +236,4 @@ MODULE_ALIAS("platform:rtc-efi"); MODULE_AUTHOR("dann frazier <dannf@hp.com>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("EFI RTC driver"); +MODULE_ALIAS("platform:rtc-efi"); diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 729215885250..72e12bad14b9 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -669,6 +669,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws) master->cleanup = dw_spi_cleanup; master->transfer_one_message = dw_spi_transfer_one_message; master->max_speed_hz = dws->max_freq; + master->dev.of_node = dev->of_node; /* Basic HW init */ spi_hw_init(dws); diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index 835cdda6f4f5..c76b7d7879df 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -454,7 +454,7 @@ static int orion_spi_probe(struct platform_device *pdev) spi->master = master; of_id = of_match_device(orion_spi_of_match_table, &pdev->dev); - devdata = of_id->data; + devdata = (of_id) ? of_id->data : &orion_spi_dev_data; spi->devdata = devdata; spi->clk = devm_clk_get(&pdev->dev, NULL); diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index f35f723816ea..fc2dd8441608 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -1106,7 +1106,7 @@ err_rxdesc: pl022->sgt_tx.nents, DMA_TO_DEVICE); err_tx_sgmap: dma_unmap_sg(rxchan->device->dev, pl022->sgt_rx.sgl, - pl022->sgt_tx.nents, DMA_FROM_DEVICE); + pl022->sgt_rx.nents, DMA_FROM_DEVICE); err_rx_sgmap: sg_free_table(&pl022->sgt_tx); err_alloc_tx_sg: diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index f96ea8a38d64..87bc16f491f0 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -145,6 +145,9 @@ #define RXBUSY (1 << 0) #define TXBUSY (1 << 1) +/* sclk_out: spi master internal logic in rk3x can support 50Mhz */ +#define MAX_SCLK_OUT 50000000 + enum rockchip_ssi_type { SSI_MOTO_SPI = 0, SSI_TI_SSP, @@ -325,6 +328,8 @@ static int rockchip_spi_unprepare_message(struct spi_master *master, spin_unlock_irqrestore(&rs->lock, flags); + spi_enable_chip(rs, 0); + return 0; } @@ -381,6 +386,8 @@ static int rockchip_spi_pio_transfer(struct rockchip_spi *rs) if (rs->tx) wait_for_idle(rs); + spi_enable_chip(rs, 0); + return 0; } @@ -392,8 +399,10 @@ static void rockchip_spi_dma_rxcb(void *data) spin_lock_irqsave(&rs->lock, flags); rs->state &= ~RXBUSY; - if (!(rs->state & TXBUSY)) + if (!(rs->state & TXBUSY)) { + spi_enable_chip(rs, 0); spi_finalize_current_transfer(rs->master); + } spin_unlock_irqrestore(&rs->lock, flags); } @@ -409,8 +418,10 @@ static void rockchip_spi_dma_txcb(void *data) spin_lock_irqsave(&rs->lock, flags); rs->state &= ~TXBUSY; - if (!(rs->state & RXBUSY)) + if (!(rs->state & RXBUSY)) { + spi_enable_chip(rs, 0); spi_finalize_current_transfer(rs->master); + } spin_unlock_irqrestore(&rs->lock, flags); } @@ -496,12 +507,19 @@ static void rockchip_spi_config(struct rockchip_spi *rs) dmacr |= RF_DMA_EN; } + if (WARN_ON(rs->speed > MAX_SCLK_OUT)) + rs->speed = MAX_SCLK_OUT; + + /* the minimum divsor is 2 */ + if (rs->max_freq < 2 * rs->speed) { + clk_set_rate(rs->spiclk, 2 * rs->speed); + rs->max_freq = clk_get_rate(rs->spiclk); + } + /* div doesn't support odd number */ div = max_t(u32, rs->max_freq / rs->speed, 1); div = (div + 1) & 0xfffe; - spi_enable_chip(rs, 0); - writel_relaxed(cr0, rs->regs + ROCKCHIP_SPI_CTRLR0); writel_relaxed(rs->len - 1, rs->regs + ROCKCHIP_SPI_CTRLR1); @@ -515,8 +533,6 @@ static void rockchip_spi_config(struct rockchip_spi *rs) spi_set_clk(rs, div); dev_dbg(rs->dev, "cr0 0x%x, div %d\n", cr0, div); - - spi_enable_chip(rs, 1); } static int rockchip_spi_transfer_one( @@ -524,7 +540,7 @@ static int rockchip_spi_transfer_one( struct spi_device *spi, struct spi_transfer *xfer) { - int ret = 0; + int ret = 1; struct rockchip_spi *rs = spi_master_get_devdata(master); WARN_ON(readl_relaxed(rs->regs + ROCKCHIP_SPI_SSIENR) && @@ -556,17 +572,27 @@ static int rockchip_spi_transfer_one( rs->tmode = CR0_XFM_RO; /* we need prepare dma before spi was enabled */ - if (master->can_dma && master->can_dma(master, spi, xfer)) { + if (master->can_dma && master->can_dma(master, spi, xfer)) rs->use_dma = 1; - rockchip_spi_prepare_dma(rs); - } else { + else rs->use_dma = 0; - } rockchip_spi_config(rs); - if (!rs->use_dma) + if (rs->use_dma) { + if (rs->tmode == CR0_XFM_RO) { + /* rx: dma must be prepared first */ + rockchip_spi_prepare_dma(rs); + spi_enable_chip(rs, 1); + } else { + /* tx or tr: spi must be enabled first */ + spi_enable_chip(rs, 1); + rockchip_spi_prepare_dma(rs); + } + } else { + spi_enable_chip(rs, 1); ret = rockchip_spi_pio_transfer(rs); + } return ret; } diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index e3bc23bb5883..e50039fb1474 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -82,10 +82,11 @@ struct spidev_data { struct spi_device *spi; struct list_head device_entry; - /* buffer is NULL unless this device is open (users > 0) */ + /* TX/RX buffers are NULL unless this device is open (users > 0) */ struct mutex buf_lock; unsigned users; - u8 *buffer; + u8 *tx_buffer; + u8 *rx_buffer; }; static LIST_HEAD(device_list); @@ -135,7 +136,7 @@ static inline ssize_t spidev_sync_write(struct spidev_data *spidev, size_t len) { struct spi_transfer t = { - .tx_buf = spidev->buffer, + .tx_buf = spidev->tx_buffer, .len = len, }; struct spi_message m; @@ -149,7 +150,7 @@ static inline ssize_t spidev_sync_read(struct spidev_data *spidev, size_t len) { struct spi_transfer t = { - .rx_buf = spidev->buffer, + .rx_buf = spidev->rx_buffer, .len = len, }; struct spi_message m; @@ -179,7 +180,7 @@ spidev_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos) if (status > 0) { unsigned long missing; - missing = copy_to_user(buf, spidev->buffer, status); + missing = copy_to_user(buf, spidev->rx_buffer, status); if (missing == status) status = -EFAULT; else @@ -206,7 +207,7 @@ spidev_write(struct file *filp, const char __user *buf, spidev = filp->private_data; mutex_lock(&spidev->buf_lock); - missing = copy_from_user(spidev->buffer, buf, count); + missing = copy_from_user(spidev->tx_buffer, buf, count); if (missing == 0) status = spidev_sync_write(spidev, count); else @@ -224,7 +225,7 @@ static int spidev_message(struct spidev_data *spidev, struct spi_transfer *k_tmp; struct spi_ioc_transfer *u_tmp; unsigned n, total; - u8 *buf; + u8 *tx_buf, *rx_buf; int status = -EFAULT; spi_message_init(&msg); @@ -236,7 +237,8 @@ static int spidev_message(struct spidev_data *spidev, * We walk the array of user-provided transfers, using each one * to initialize a kernel version of the same transfer. */ - buf = spidev->buffer; + tx_buf = spidev->tx_buffer; + rx_buf = spidev->rx_buffer; total = 0; for (n = n_xfers, k_tmp = k_xfers, u_tmp = u_xfers; n; @@ -250,20 +252,21 @@ static int spidev_message(struct spidev_data *spidev, } if (u_tmp->rx_buf) { - k_tmp->rx_buf = buf; + k_tmp->rx_buf = rx_buf; if (!access_ok(VERIFY_WRITE, (u8 __user *) (uintptr_t) u_tmp->rx_buf, u_tmp->len)) goto done; } if (u_tmp->tx_buf) { - k_tmp->tx_buf = buf; - if (copy_from_user(buf, (const u8 __user *) + k_tmp->tx_buf = tx_buf; + if (copy_from_user(tx_buf, (const u8 __user *) (uintptr_t) u_tmp->tx_buf, u_tmp->len)) goto done; } - buf += k_tmp->len; + tx_buf += k_tmp->len; + rx_buf += k_tmp->len; k_tmp->cs_change = !!u_tmp->cs_change; k_tmp->tx_nbits = u_tmp->tx_nbits; @@ -290,17 +293,17 @@ static int spidev_message(struct spidev_data *spidev, goto done; /* copy any rx data out of bounce buffer */ - buf = spidev->buffer; + rx_buf = spidev->rx_buffer; for (n = n_xfers, u_tmp = u_xfers; n; n--, u_tmp++) { if (u_tmp->rx_buf) { if (__copy_to_user((u8 __user *) - (uintptr_t) u_tmp->rx_buf, buf, + (uintptr_t) u_tmp->rx_buf, rx_buf, u_tmp->len)) { status = -EFAULT; goto done; } } - buf += u_tmp->len; + rx_buf += u_tmp->len; } status = total; @@ -508,22 +511,41 @@ static int spidev_open(struct inode *inode, struct file *filp) break; } } - if (status == 0) { - if (!spidev->buffer) { - spidev->buffer = kmalloc(bufsiz, GFP_KERNEL); - if (!spidev->buffer) { + + if (status) { + pr_debug("spidev: nothing for minor %d\n", iminor(inode)); + goto err_find_dev; + } + + if (!spidev->tx_buffer) { + spidev->tx_buffer = kmalloc(bufsiz, GFP_KERNEL); + if (!spidev->tx_buffer) { dev_dbg(&spidev->spi->dev, "open/ENOMEM\n"); status = -ENOMEM; + goto err_find_dev; } } - if (status == 0) { - spidev->users++; - filp->private_data = spidev; - nonseekable_open(inode, filp); + + if (!spidev->rx_buffer) { + spidev->rx_buffer = kmalloc(bufsiz, GFP_KERNEL); + if (!spidev->rx_buffer) { + dev_dbg(&spidev->spi->dev, "open/ENOMEM\n"); + status = -ENOMEM; + goto err_alloc_rx_buf; } - } else - pr_debug("spidev: nothing for minor %d\n", iminor(inode)); + } + + spidev->users++; + filp->private_data = spidev; + nonseekable_open(inode, filp); + + mutex_unlock(&device_list_lock); + return 0; +err_alloc_rx_buf: + kfree(spidev->tx_buffer); + spidev->tx_buffer = NULL; +err_find_dev: mutex_unlock(&device_list_lock); return status; } @@ -542,8 +564,11 @@ static int spidev_release(struct inode *inode, struct file *filp) if (!spidev->users) { int dofree; - kfree(spidev->buffer); - spidev->buffer = NULL; + kfree(spidev->tx_buffer); + spidev->tx_buffer = NULL; + + kfree(spidev->rx_buffer); + spidev->rx_buffer = NULL; /* ... after we unbound from the underlying device? */ spin_lock_irq(&spidev->spi_lock); diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index ef5587fe2c69..f554d25b4399 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -84,6 +84,16 @@ config THERMAL_GOV_STEP_WISE Enable this to manage platform thermals using a simple linear governor. +config THERMAL_GOV_BANG_BANG + bool "Bang Bang thermal governor" + default n + help + Enable this to manage platform thermals using bang bang governor. + + Say 'Y' here if you want to use two point temperature regulation + used for fans without throttling. Some fan drivers depend on this + governor to be enabled (e.g. acerhdf). + config THERMAL_GOV_USER_SPACE bool "User_space thermal governor" help @@ -207,21 +217,6 @@ config X86_PKG_TEMP_THERMAL two trip points which can be set by user to get notifications via thermal notification methods. -config ACPI_INT3403_THERMAL - tristate "ACPI INT3403 thermal driver" - depends on X86 && ACPI - help - Newer laptops and tablets that use ACPI may have thermal sensors - outside the core CPU/SOC for thermal safety reasons. These - temperature sensors are also exposed for the OS to use via the so - called INT3403 ACPI object. This driver will, on devices that have - such sensors, expose the temperature information from these sensors - to userspace via the normal thermal framework. This means that a wide - range of applications and GUI widgets can show this information to - the user or use this information for making decisions. For example, - the Intel Thermal Daemon can use this information to allow the user - to select his laptop to run without turning on the fans. - config INTEL_SOC_DTS_THERMAL tristate "Intel SoCs DTS thermal driver" depends on X86 && IOSF_MBI @@ -234,6 +229,30 @@ config INTEL_SOC_DTS_THERMAL notification methods.The other trip is a critical trip point, which was set by the driver based on the TJ MAX temperature. +config INT340X_THERMAL + tristate "ACPI INT340X thermal drivers" + depends on X86 && ACPI + select THERMAL_GOV_USER_SPACE + select ACPI_THERMAL_REL + select ACPI_FAN + help + Newer laptops and tablets that use ACPI may have thermal sensors and + other devices with thermal control capabilities outside the core + CPU/SOC, for thermal safety reasons. + They are exposed for the OS to use via the INT3400 ACPI device object + as the master, and INT3401~INT340B ACPI device objects as the slaves. + Enable this to expose the temperature information and cooling ability + from these objects to userspace via the normal thermal framework. + This means that a wide range of applications and GUI widgets can show + the information to the user or use this information for making + decisions. For example, the Intel Thermal Daemon can use this + information to allow the user to select his laptop to run without + turning on the fans. + +config ACPI_THERMAL_REL + tristate + depends on ACPI + menu "Texas Instruments thermal drivers" source "drivers/thermal/ti-soc-thermal/Kconfig" endmenu diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 31e232f84b6b..39c4fe87da2f 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -11,6 +11,7 @@ thermal_sys-$(CONFIG_THERMAL_OF) += of-thermal.o # governors thermal_sys-$(CONFIG_THERMAL_GOV_FAIR_SHARE) += fair_share.o +thermal_sys-$(CONFIG_THERMAL_GOV_BANG_BANG) += gov_bang_bang.o thermal_sys-$(CONFIG_THERMAL_GOV_STEP_WISE) += step_wise.o thermal_sys-$(CONFIG_THERMAL_GOV_USER_SPACE) += user_space.o @@ -31,5 +32,5 @@ obj-$(CONFIG_INTEL_POWERCLAMP) += intel_powerclamp.o obj-$(CONFIG_X86_PKG_TEMP_THERMAL) += x86_pkg_temp_thermal.o obj-$(CONFIG_INTEL_SOC_DTS_THERMAL) += intel_soc_dts_thermal.o obj-$(CONFIG_TI_SOC_THERMAL) += ti-soc-thermal/ -obj-$(CONFIG_ACPI_INT3403_THERMAL) += int3403_thermal.o +obj-$(CONFIG_INT340X_THERMAL) += int340x_thermal/ obj-$(CONFIG_ST_THERMAL) += st/ diff --git a/drivers/thermal/fair_share.c b/drivers/thermal/fair_share.c index 944ba2f340c8..6e0a3fbfae86 100644 --- a/drivers/thermal/fair_share.c +++ b/drivers/thermal/fair_share.c @@ -23,6 +23,7 @@ */ #include <linux/thermal.h> +#include <trace/events/thermal.h> #include "thermal_core.h" @@ -34,6 +35,7 @@ static int get_trip_level(struct thermal_zone_device *tz) { int count = 0; unsigned long trip_temp; + enum thermal_trip_type trip_type; if (tz->trips == 0 || !tz->ops->get_trip_temp) return 0; @@ -43,6 +45,16 @@ static int get_trip_level(struct thermal_zone_device *tz) if (tz->temperature < trip_temp) break; } + + /* + * count > 0 only if temperature is greater than first trip + * point, in which case, trip_point = count - 1 + */ + if (count > 0) { + tz->ops->get_trip_type(tz, count - 1, &trip_type); + trace_thermal_zone_trip(tz, count - 1, trip_type); + } + return count; } diff --git a/drivers/thermal/gov_bang_bang.c b/drivers/thermal/gov_bang_bang.c new file mode 100644 index 000000000000..c5dd76b2ee74 --- /dev/null +++ b/drivers/thermal/gov_bang_bang.c @@ -0,0 +1,131 @@ +/* + * gov_bang_bang.c - A simple thermal throttling governor using hysteresis + * + * Copyright (C) 2014 Peter Feuerer <peter@piie.net> + * + * Based on step_wise.c with following Copyrights: + * Copyright (C) 2012 Intel Corp + * Copyright (C) 2012 Durgadoss R <durgadoss.r@intel.com> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + */ + +#include <linux/thermal.h> + +#include "thermal_core.h" + +static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) +{ + long trip_temp; + unsigned long trip_hyst; + struct thermal_instance *instance; + + tz->ops->get_trip_temp(tz, trip, &trip_temp); + tz->ops->get_trip_hyst(tz, trip, &trip_hyst); + + dev_dbg(&tz->device, "Trip%d[temp=%ld]:temp=%d:hyst=%ld\n", + trip, trip_temp, tz->temperature, + trip_hyst); + + mutex_lock(&tz->lock); + + list_for_each_entry(instance, &tz->thermal_instances, tz_node) { + if (instance->trip != trip) + continue; + + /* in case fan is in initial state, switch the fan off */ + if (instance->target == THERMAL_NO_TARGET) + instance->target = 0; + + /* in case fan is neither on nor off set the fan to active */ + if (instance->target != 0 && instance->target != 1) { + pr_warn("Thermal instance %s controlled by bang-bang has unexpected state: %ld\n", + instance->name, instance->target); + instance->target = 1; + } + + /* + * enable fan when temperature exceeds trip_temp and disable + * the fan in case it falls below trip_temp minus hysteresis + */ + if (instance->target == 0 && tz->temperature >= trip_temp) + instance->target = 1; + else if (instance->target == 1 && + tz->temperature < trip_temp - trip_hyst) + instance->target = 0; + + dev_dbg(&instance->cdev->device, "target=%d\n", + (int)instance->target); + + instance->cdev->updated = false; /* cdev needs update */ + } + + mutex_unlock(&tz->lock); +} + +/** + * bang_bang_control - controls devices associated with the given zone + * @tz - thermal_zone_device + * @trip - the trip point + * + * Regulation Logic: a two point regulation, deliver cooling state depending + * on the previous state shown in this diagram: + * + * Fan: OFF ON + * + * | + * | + * trip_temp: +---->+ + * | | ^ + * | | | + * | | Temperature + * (trip_temp - hyst): +<----+ + * | + * | + * | + * + * * If the fan is not running and temperature exceeds trip_temp, the fan + * gets turned on. + * * In case the fan is running, temperature must fall below + * (trip_temp - hyst) so that the fan gets turned off again. + * + */ +static int bang_bang_control(struct thermal_zone_device *tz, int trip) +{ + struct thermal_instance *instance; + + thermal_zone_trip_update(tz, trip); + + mutex_lock(&tz->lock); + + list_for_each_entry(instance, &tz->thermal_instances, tz_node) + thermal_cdev_update(instance->cdev); + + mutex_unlock(&tz->lock); + + return 0; +} + +static struct thermal_governor thermal_gov_bang_bang = { + .name = "bang_bang", + .throttle = bang_bang_control, +}; + +int thermal_gov_bang_bang_register(void) +{ + return thermal_register_governor(&thermal_gov_bang_bang); +} + +void thermal_gov_bang_bang_unregister(void) +{ + thermal_unregister_governor(&thermal_gov_bang_bang); +} diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c index 2c516f2eebed..461bf3d033a0 100644 --- a/drivers/thermal/imx_thermal.c +++ b/drivers/thermal/imx_thermal.c @@ -19,6 +19,7 @@ #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/slab.h> @@ -31,6 +32,11 @@ #define MISC0 0x0150 #define MISC0_REFTOP_SELBIASOFF (1 << 3) +#define MISC1 0x0160 +#define MISC1_IRQ_TEMPHIGH (1 << 29) +/* Below LOW and PANIC bits are only for TEMPMON_IMX6SX */ +#define MISC1_IRQ_TEMPLOW (1 << 28) +#define MISC1_IRQ_TEMPPANIC (1 << 27) #define TEMPSENSE0 0x0180 #define TEMPSENSE0_ALARM_VALUE_SHIFT 20 @@ -43,6 +49,12 @@ #define TEMPSENSE1 0x0190 #define TEMPSENSE1_MEASURE_FREQ 0xffff +/* Below TEMPSENSE2 is only for TEMPMON_IMX6SX */ +#define TEMPSENSE2 0x0290 +#define TEMPSENSE2_LOW_VALUE_SHIFT 0 +#define TEMPSENSE2_LOW_VALUE_MASK 0xfff +#define TEMPSENSE2_PANIC_VALUE_SHIFT 16 +#define TEMPSENSE2_PANIC_VALUE_MASK 0xfff0000 #define OCOTP_ANA1 0x04e0 @@ -66,6 +78,21 @@ enum imx_thermal_trip { #define FACTOR1 15976 #define FACTOR2 4297157 +#define TEMPMON_IMX6Q 1 +#define TEMPMON_IMX6SX 2 + +struct thermal_soc_data { + u32 version; +}; + +static struct thermal_soc_data thermal_imx6q_data = { + .version = TEMPMON_IMX6Q, +}; + +static struct thermal_soc_data thermal_imx6sx_data = { + .version = TEMPMON_IMX6SX, +}; + struct imx_thermal_data { struct thermal_zone_device *tz; struct thermal_cooling_device *cdev; @@ -79,8 +106,21 @@ struct imx_thermal_data { bool irq_enabled; int irq; struct clk *thermal_clk; + const struct thermal_soc_data *socdata; }; +static void imx_set_panic_temp(struct imx_thermal_data *data, + signed long panic_temp) +{ + struct regmap *map = data->tempmon; + int critical_value; + + critical_value = (data->c2 - panic_temp) / data->c1; + regmap_write(map, TEMPSENSE2 + REG_CLR, TEMPSENSE2_PANIC_VALUE_MASK); + regmap_write(map, TEMPSENSE2 + REG_SET, critical_value << + TEMPSENSE2_PANIC_VALUE_SHIFT); +} + static void imx_set_alarm_temp(struct imx_thermal_data *data, signed long alarm_temp) { @@ -142,13 +182,17 @@ static int imx_get_temp(struct thermal_zone_device *tz, unsigned long *temp) /* See imx_get_sensor_data() for formula derivation */ *temp = data->c2 - n_meas * data->c1; - /* Update alarm value to next higher trip point */ - if (data->alarm_temp == data->temp_passive && *temp >= data->temp_passive) - imx_set_alarm_temp(data, data->temp_critical); - if (data->alarm_temp == data->temp_critical && *temp < data->temp_passive) { - imx_set_alarm_temp(data, data->temp_passive); - dev_dbg(&tz->device, "thermal alarm off: T < %lu\n", - data->alarm_temp / 1000); + /* Update alarm value to next higher trip point for TEMPMON_IMX6Q */ + if (data->socdata->version == TEMPMON_IMX6Q) { + if (data->alarm_temp == data->temp_passive && + *temp >= data->temp_passive) + imx_set_alarm_temp(data, data->temp_critical); + if (data->alarm_temp == data->temp_critical && + *temp < data->temp_passive) { + imx_set_alarm_temp(data, data->temp_passive); + dev_dbg(&tz->device, "thermal alarm off: T < %lu\n", + data->alarm_temp / 1000); + } } if (*temp != data->last_temp) { @@ -398,8 +442,17 @@ static irqreturn_t imx_thermal_alarm_irq_thread(int irq, void *dev) return IRQ_HANDLED; } +static const struct of_device_id of_imx_thermal_match[] = { + { .compatible = "fsl,imx6q-tempmon", .data = &thermal_imx6q_data, }, + { .compatible = "fsl,imx6sx-tempmon", .data = &thermal_imx6sx_data, }, + { /* end */ } +}; +MODULE_DEVICE_TABLE(of, of_imx_thermal_match); + static int imx_thermal_probe(struct platform_device *pdev) { + const struct of_device_id *of_id = + of_match_device(of_imx_thermal_match, &pdev->dev); struct imx_thermal_data *data; struct cpumask clip_cpus; struct regmap *map; @@ -418,6 +471,20 @@ static int imx_thermal_probe(struct platform_device *pdev) } data->tempmon = map; + data->socdata = of_id->data; + + /* make sure the IRQ flag is clear before enabling irq on i.MX6SX */ + if (data->socdata->version == TEMPMON_IMX6SX) { + regmap_write(map, MISC1 + REG_CLR, MISC1_IRQ_TEMPHIGH | + MISC1_IRQ_TEMPLOW | MISC1_IRQ_TEMPPANIC); + /* + * reset value of LOW ALARM is incorrect, set it to lowest + * value to avoid false trigger of low alarm. + */ + regmap_write(map, TEMPSENSE2 + REG_SET, + TEMPSENSE2_LOW_VALUE_MASK); + } + data->irq = platform_get_irq(pdev, 0); if (data->irq < 0) return data->irq; @@ -489,6 +556,10 @@ static int imx_thermal_probe(struct platform_device *pdev) measure_freq = DIV_ROUND_UP(32768, 10); /* 10 Hz */ regmap_write(map, TEMPSENSE1 + REG_SET, measure_freq); imx_set_alarm_temp(data, data->temp_passive); + + if (data->socdata->version == TEMPMON_IMX6SX) + imx_set_panic_temp(data, data->temp_critical); + regmap_write(map, TEMPSENSE0 + REG_CLR, TEMPSENSE0_POWER_DOWN); regmap_write(map, TEMPSENSE0 + REG_SET, TEMPSENSE0_MEASURE_TEMP); @@ -550,12 +621,6 @@ static int imx_thermal_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(imx_thermal_pm_ops, imx_thermal_suspend, imx_thermal_resume); -static const struct of_device_id of_imx_thermal_match[] = { - { .compatible = "fsl,imx6q-tempmon", }, - { /* end */ } -}; -MODULE_DEVICE_TABLE(of, of_imx_thermal_match); - static struct platform_driver imx_thermal = { .driver = { .name = "imx_thermal", diff --git a/drivers/thermal/int3403_thermal.c b/drivers/thermal/int3403_thermal.c deleted file mode 100644 index 17554eeb3953..000000000000 --- a/drivers/thermal/int3403_thermal.c +++ /dev/null @@ -1,296 +0,0 @@ -/* - * ACPI INT3403 thermal driver - * Copyright (c) 2013, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/acpi.h> -#include <linux/thermal.h> - -#define INT3403_TYPE_SENSOR 0x03 -#define INT3403_PERF_CHANGED_EVENT 0x80 -#define INT3403_THERMAL_EVENT 0x90 - -#define DECI_KELVIN_TO_MILLI_CELSIUS(t, off) (((t) - (off)) * 100) -#define KELVIN_OFFSET 2732 -#define MILLI_CELSIUS_TO_DECI_KELVIN(t, off) (((t) / 100) + (off)) - -#define ACPI_INT3403_CLASS "int3403" -#define ACPI_INT3403_FILE_STATE "state" - -struct int3403_sensor { - struct thermal_zone_device *tzone; - unsigned long *thresholds; - unsigned long crit_temp; - int crit_trip_id; - unsigned long psv_temp; - int psv_trip_id; -}; - -static int sys_get_curr_temp(struct thermal_zone_device *tzone, - unsigned long *temp) -{ - struct acpi_device *device = tzone->devdata; - unsigned long long tmp; - acpi_status status; - - status = acpi_evaluate_integer(device->handle, "_TMP", NULL, &tmp); - if (ACPI_FAILURE(status)) - return -EIO; - - *temp = DECI_KELVIN_TO_MILLI_CELSIUS(tmp, KELVIN_OFFSET); - - return 0; -} - -static int sys_get_trip_hyst(struct thermal_zone_device *tzone, - int trip, unsigned long *temp) -{ - struct acpi_device *device = tzone->devdata; - unsigned long long hyst; - acpi_status status; - - status = acpi_evaluate_integer(device->handle, "GTSH", NULL, &hyst); - if (ACPI_FAILURE(status)) - return -EIO; - - /* - * Thermal hysteresis represents a temperature difference. - * Kelvin and Celsius have same degree size. So the - * conversion here between tenths of degree Kelvin unit - * and Milli-Celsius unit is just to multiply 100. - */ - *temp = hyst * 100; - - return 0; -} - -static int sys_get_trip_temp(struct thermal_zone_device *tzone, - int trip, unsigned long *temp) -{ - struct acpi_device *device = tzone->devdata; - struct int3403_sensor *obj = acpi_driver_data(device); - - if (trip == obj->crit_trip_id) - *temp = obj->crit_temp; - else if (trip == obj->psv_trip_id) - *temp = obj->psv_temp; - else { - /* - * get_trip_temp is a mandatory callback but - * PATx method doesn't return any value, so return - * cached value, which was last set from user space. - */ - *temp = obj->thresholds[trip]; - } - - return 0; -} - -static int sys_get_trip_type(struct thermal_zone_device *thermal, - int trip, enum thermal_trip_type *type) -{ - struct acpi_device *device = thermal->devdata; - struct int3403_sensor *obj = acpi_driver_data(device); - - /* Mandatory callback, may not mean much here */ - if (trip == obj->crit_trip_id) - *type = THERMAL_TRIP_CRITICAL; - else - *type = THERMAL_TRIP_PASSIVE; - - return 0; -} - -int sys_set_trip_temp(struct thermal_zone_device *tzone, int trip, - unsigned long temp) -{ - struct acpi_device *device = tzone->devdata; - acpi_status status; - char name[10]; - int ret = 0; - struct int3403_sensor *obj = acpi_driver_data(device); - - snprintf(name, sizeof(name), "PAT%d", trip); - if (acpi_has_method(device->handle, name)) { - status = acpi_execute_simple_method(device->handle, name, - MILLI_CELSIUS_TO_DECI_KELVIN(temp, - KELVIN_OFFSET)); - if (ACPI_FAILURE(status)) - ret = -EIO; - else - obj->thresholds[trip] = temp; - } else { - ret = -EIO; - dev_err(&device->dev, "sys_set_trip_temp: method not found\n"); - } - - return ret; -} - -static struct thermal_zone_device_ops tzone_ops = { - .get_temp = sys_get_curr_temp, - .get_trip_temp = sys_get_trip_temp, - .get_trip_type = sys_get_trip_type, - .set_trip_temp = sys_set_trip_temp, - .get_trip_hyst = sys_get_trip_hyst, -}; - -static void acpi_thermal_notify(struct acpi_device *device, u32 event) -{ - struct int3403_sensor *obj; - - if (!device) - return; - - obj = acpi_driver_data(device); - if (!obj) - return; - - switch (event) { - case INT3403_PERF_CHANGED_EVENT: - break; - case INT3403_THERMAL_EVENT: - thermal_zone_device_update(obj->tzone); - break; - default: - dev_err(&device->dev, "Unsupported event [0x%x]\n", event); - break; - } -} - -static int sys_get_trip_crt(struct acpi_device *device, unsigned long *temp) -{ - unsigned long long crt; - acpi_status status; - - status = acpi_evaluate_integer(device->handle, "_CRT", NULL, &crt); - if (ACPI_FAILURE(status)) - return -EIO; - - *temp = DECI_KELVIN_TO_MILLI_CELSIUS(crt, KELVIN_OFFSET); - - return 0; -} - -static int sys_get_trip_psv(struct acpi_device *device, unsigned long *temp) -{ - unsigned long long psv; - acpi_status status; - - status = acpi_evaluate_integer(device->handle, "_PSV", NULL, &psv); - if (ACPI_FAILURE(status)) - return -EIO; - - *temp = DECI_KELVIN_TO_MILLI_CELSIUS(psv, KELVIN_OFFSET); - - return 0; -} - -static int acpi_int3403_add(struct acpi_device *device) -{ - int result = 0; - unsigned long long ptyp; - acpi_status status; - struct int3403_sensor *obj; - unsigned long long trip_cnt; - int trip_mask = 0; - - if (!device) - return -EINVAL; - - status = acpi_evaluate_integer(device->handle, "PTYP", NULL, &ptyp); - if (ACPI_FAILURE(status)) - return -EINVAL; - - if (ptyp != INT3403_TYPE_SENSOR) - return -EINVAL; - - obj = devm_kzalloc(&device->dev, sizeof(*obj), GFP_KERNEL); - if (!obj) - return -ENOMEM; - - device->driver_data = obj; - - status = acpi_evaluate_integer(device->handle, "PATC", NULL, - &trip_cnt); - if (ACPI_FAILURE(status)) - trip_cnt = 0; - - if (trip_cnt) { - /* We have to cache, thresholds can't be readback */ - obj->thresholds = devm_kzalloc(&device->dev, - sizeof(*obj->thresholds) * trip_cnt, - GFP_KERNEL); - if (!obj->thresholds) - return -ENOMEM; - trip_mask = BIT(trip_cnt) - 1; - } - - obj->psv_trip_id = -1; - if (!sys_get_trip_psv(device, &obj->psv_temp)) - obj->psv_trip_id = trip_cnt++; - - obj->crit_trip_id = -1; - if (!sys_get_trip_crt(device, &obj->crit_temp)) - obj->crit_trip_id = trip_cnt++; - - obj->tzone = thermal_zone_device_register(acpi_device_bid(device), - trip_cnt, trip_mask, device, &tzone_ops, - NULL, 0, 0); - if (IS_ERR(obj->tzone)) { - result = PTR_ERR(obj->tzone); - return result; - } - - strcpy(acpi_device_name(device), "INT3403"); - strcpy(acpi_device_class(device), ACPI_INT3403_CLASS); - - return 0; -} - -static int acpi_int3403_remove(struct acpi_device *device) -{ - struct int3403_sensor *obj; - - obj = acpi_driver_data(device); - thermal_zone_device_unregister(obj->tzone); - - return 0; -} - -ACPI_MODULE_NAME("int3403"); -static const struct acpi_device_id int3403_device_ids[] = { - {"INT3403", 0}, - {"", 0}, -}; -MODULE_DEVICE_TABLE(acpi, int3403_device_ids); - -static struct acpi_driver acpi_int3403_driver = { - .name = "INT3403", - .class = ACPI_INT3403_CLASS, - .ids = int3403_device_ids, - .ops = { - .add = acpi_int3403_add, - .remove = acpi_int3403_remove, - .notify = acpi_thermal_notify, - }, -}; - -module_acpi_driver(acpi_int3403_driver); - -MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); -MODULE_LICENSE("GPL v2"); -MODULE_DESCRIPTION("ACPI INT3403 thermal driver"); diff --git a/drivers/thermal/int340x_thermal/Makefile b/drivers/thermal/int340x_thermal/Makefile new file mode 100644 index 000000000000..ffe40bffaf1a --- /dev/null +++ b/drivers/thermal/int340x_thermal/Makefile @@ -0,0 +1,4 @@ +obj-$(CONFIG_INT340X_THERMAL) += int3400_thermal.o +obj-$(CONFIG_INT340X_THERMAL) += int3402_thermal.o +obj-$(CONFIG_INT340X_THERMAL) += int3403_thermal.o +obj-$(CONFIG_ACPI_THERMAL_REL) += acpi_thermal_rel.o diff --git a/drivers/thermal/int340x_thermal/acpi_thermal_rel.c b/drivers/thermal/int340x_thermal/acpi_thermal_rel.c new file mode 100644 index 000000000000..0d8db808f0ae --- /dev/null +++ b/drivers/thermal/int340x_thermal/acpi_thermal_rel.c @@ -0,0 +1,400 @@ +/* acpi_thermal_rel.c driver for exporting ACPI thermal relationship + * + * Copyright (c) 2014 Intel Corp + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + */ + +/* + * Two functionalities included: + * 1. Export _TRT, _ART, via misc device interface to the userspace. + * 2. Provide parsing result to kernel drivers + * + */ +#include <linux/init.h> +#include <linux/export.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/acpi.h> +#include <linux/uaccess.h> +#include <linux/miscdevice.h> +#include "acpi_thermal_rel.h" + +static acpi_handle acpi_thermal_rel_handle; +static DEFINE_SPINLOCK(acpi_thermal_rel_chrdev_lock); +static int acpi_thermal_rel_chrdev_count; /* #times opened */ +static int acpi_thermal_rel_chrdev_exclu; /* already open exclusive? */ + +static int acpi_thermal_rel_open(struct inode *inode, struct file *file) +{ + spin_lock(&acpi_thermal_rel_chrdev_lock); + if (acpi_thermal_rel_chrdev_exclu || + (acpi_thermal_rel_chrdev_count && (file->f_flags & O_EXCL))) { + spin_unlock(&acpi_thermal_rel_chrdev_lock); + return -EBUSY; + } + + if (file->f_flags & O_EXCL) + acpi_thermal_rel_chrdev_exclu = 1; + acpi_thermal_rel_chrdev_count++; + + spin_unlock(&acpi_thermal_rel_chrdev_lock); + + return nonseekable_open(inode, file); +} + +static int acpi_thermal_rel_release(struct inode *inode, struct file *file) +{ + spin_lock(&acpi_thermal_rel_chrdev_lock); + acpi_thermal_rel_chrdev_count--; + acpi_thermal_rel_chrdev_exclu = 0; + spin_unlock(&acpi_thermal_rel_chrdev_lock); + + return 0; +} + +/** + * acpi_parse_trt - Thermal Relationship Table _TRT for passive cooling + * + * @handle: ACPI handle of the device contains _TRT + * @art_count: the number of valid entries resulted from parsing _TRT + * @artp: pointer to pointer of array of art entries in parsing result + * @create_dev: whether to create platform devices for target and source + * + */ +int acpi_parse_trt(acpi_handle handle, int *trt_count, struct trt **trtp, + bool create_dev) +{ + acpi_status status; + int result = 0; + int i; + int nr_bad_entries = 0; + struct trt *trts; + struct acpi_device *adev; + union acpi_object *p; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_buffer element = { 0, NULL }; + struct acpi_buffer trt_format = { sizeof("RRNNNNNN"), "RRNNNNNN" }; + + if (!acpi_has_method(handle, "_TRT")) + return 0; + + status = acpi_evaluate_object(handle, "_TRT", NULL, &buffer); + if (ACPI_FAILURE(status)) + return -ENODEV; + + p = buffer.pointer; + if (!p || (p->type != ACPI_TYPE_PACKAGE)) { + pr_err("Invalid _TRT data\n"); + result = -EFAULT; + goto end; + } + + *trt_count = p->package.count; + trts = kzalloc(*trt_count * sizeof(struct trt), GFP_KERNEL); + if (!trts) { + result = -ENOMEM; + goto end; + } + + for (i = 0; i < *trt_count; i++) { + struct trt *trt = &trts[i - nr_bad_entries]; + + element.length = sizeof(struct trt); + element.pointer = trt; + + status = acpi_extract_package(&(p->package.elements[i]), + &trt_format, &element); + if (ACPI_FAILURE(status)) { + nr_bad_entries++; + pr_warn("_TRT package %d is invalid, ignored\n", i); + continue; + } + if (!create_dev) + continue; + + result = acpi_bus_get_device(trt->source, &adev); + if (!result) + acpi_create_platform_device(adev); + else + pr_warn("Failed to get source ACPI device\n"); + + result = acpi_bus_get_device(trt->target, &adev); + if (!result) + acpi_create_platform_device(adev); + else + pr_warn("Failed to get target ACPI device\n"); + } + + *trtp = trts; + /* don't count bad entries */ + *trt_count -= nr_bad_entries; +end: + kfree(buffer.pointer); + return result; +} +EXPORT_SYMBOL(acpi_parse_trt); + +/** + * acpi_parse_art - Parse Active Relationship Table _ART + * + * @handle: ACPI handle of the device contains _ART + * @art_count: the number of valid entries resulted from parsing _ART + * @artp: pointer to pointer of array of art entries in parsing result + * @create_dev: whether to create platform devices for target and source + * + */ +int acpi_parse_art(acpi_handle handle, int *art_count, struct art **artp, + bool create_dev) +{ + acpi_status status; + int result = 0; + int i; + int nr_bad_entries = 0; + struct art *arts; + struct acpi_device *adev; + union acpi_object *p; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct acpi_buffer element = { 0, NULL }; + struct acpi_buffer art_format = { + sizeof("RRNNNNNNNNNNN"), "RRNNNNNNNNNNN" }; + + if (!acpi_has_method(handle, "_ART")) + return 0; + + status = acpi_evaluate_object(handle, "_ART", NULL, &buffer); + if (ACPI_FAILURE(status)) + return -ENODEV; + + p = buffer.pointer; + if (!p || (p->type != ACPI_TYPE_PACKAGE)) { + pr_err("Invalid _ART data\n"); + result = -EFAULT; + goto end; + } + + /* ignore p->package.elements[0], as this is _ART Revision field */ + *art_count = p->package.count - 1; + arts = kzalloc(*art_count * sizeof(struct art), GFP_KERNEL); + if (!arts) { + result = -ENOMEM; + goto end; + } + + for (i = 0; i < *art_count; i++) { + struct art *art = &arts[i - nr_bad_entries]; + + element.length = sizeof(struct art); + element.pointer = art; + + status = acpi_extract_package(&(p->package.elements[i + 1]), + &art_format, &element); + if (ACPI_FAILURE(status)) { + pr_warn("_ART package %d is invalid, ignored", i); + nr_bad_entries++; + continue; + } + if (!create_dev) + continue; + + if (art->source) { + result = acpi_bus_get_device(art->source, &adev); + if (!result) + acpi_create_platform_device(adev); + else + pr_warn("Failed to get source ACPI device\n"); + } + if (art->target) { + result = acpi_bus_get_device(art->target, &adev); + if (!result) + acpi_create_platform_device(adev); + else + pr_warn("Failed to get source ACPI device\n"); + } + } + + *artp = arts; + /* don't count bad entries */ + *art_count -= nr_bad_entries; +end: + kfree(buffer.pointer); + return result; +} +EXPORT_SYMBOL(acpi_parse_art); + + +/* get device name from acpi handle */ +static void get_single_name(acpi_handle handle, char *name) +{ + struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER}; + + if (ACPI_FAILURE(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer))) + pr_warn("Failed get name from handle\n"); + else { + memcpy(name, buffer.pointer, ACPI_NAME_SIZE); + kfree(buffer.pointer); + } +} + +static int fill_art(char __user *ubuf) +{ + int i; + int ret; + int count; + int art_len; + struct art *arts = NULL; + union art_object *art_user; + + ret = acpi_parse_art(acpi_thermal_rel_handle, &count, &arts, false); + if (ret) + goto free_art; + art_len = count * sizeof(union art_object); + art_user = kzalloc(art_len, GFP_KERNEL); + if (!art_user) { + ret = -ENOMEM; + goto free_art; + } + /* now fill in user art data */ + for (i = 0; i < count; i++) { + /* userspace art needs device name instead of acpi reference */ + get_single_name(arts[i].source, art_user[i].source_device); + get_single_name(arts[i].target, art_user[i].target_device); + /* copy the rest int data in addition to source and target */ + memcpy(&art_user[i].weight, &arts[i].weight, + sizeof(u64) * (ACPI_NR_ART_ELEMENTS - 2)); + } + + if (copy_to_user(ubuf, art_user, art_len)) + ret = -EFAULT; + kfree(art_user); +free_art: + kfree(arts); + return ret; +} + +static int fill_trt(char __user *ubuf) +{ + int i; + int ret; + int count; + int trt_len; + struct trt *trts = NULL; + union trt_object *trt_user; + + ret = acpi_parse_trt(acpi_thermal_rel_handle, &count, &trts, false); + if (ret) + goto free_trt; + trt_len = count * sizeof(union trt_object); + trt_user = kzalloc(trt_len, GFP_KERNEL); + if (!trt_user) { + ret = -ENOMEM; + goto free_trt; + } + /* now fill in user trt data */ + for (i = 0; i < count; i++) { + /* userspace trt needs device name instead of acpi reference */ + get_single_name(trts[i].source, trt_user[i].source_device); + get_single_name(trts[i].target, trt_user[i].target_device); + trt_user[i].sample_period = trts[i].sample_period; + trt_user[i].influence = trts[i].influence; + } + + if (copy_to_user(ubuf, trt_user, trt_len)) + ret = -EFAULT; + kfree(trt_user); +free_trt: + kfree(trts); + return ret; +} + +static long acpi_thermal_rel_ioctl(struct file *f, unsigned int cmd, + unsigned long __arg) +{ + int ret = 0; + unsigned long length = 0; + unsigned long count = 0; + char __user *arg = (void __user *)__arg; + struct trt *trts; + struct art *arts; + + switch (cmd) { + case ACPI_THERMAL_GET_TRT_COUNT: + ret = acpi_parse_trt(acpi_thermal_rel_handle, (int *)&count, + &trts, false); + kfree(trts); + if (!ret) + return put_user(count, (unsigned long __user *)__arg); + return ret; + case ACPI_THERMAL_GET_TRT_LEN: + ret = acpi_parse_trt(acpi_thermal_rel_handle, (int *)&count, + &trts, false); + kfree(trts); + length = count * sizeof(union trt_object); + if (!ret) + return put_user(length, (unsigned long __user *)__arg); + return ret; + case ACPI_THERMAL_GET_TRT: + return fill_trt(arg); + case ACPI_THERMAL_GET_ART_COUNT: + ret = acpi_parse_art(acpi_thermal_rel_handle, (int *)&count, + &arts, false); + kfree(arts); + if (!ret) + return put_user(count, (unsigned long __user *)__arg); + return ret; + case ACPI_THERMAL_GET_ART_LEN: + ret = acpi_parse_art(acpi_thermal_rel_handle, (int *)&count, + &arts, false); + kfree(arts); + length = count * sizeof(union art_object); + if (!ret) + return put_user(length, (unsigned long __user *)__arg); + return ret; + + case ACPI_THERMAL_GET_ART: + return fill_art(arg); + + default: + return -ENOTTY; + } +} + +static const struct file_operations acpi_thermal_rel_fops = { + .owner = THIS_MODULE, + .open = acpi_thermal_rel_open, + .release = acpi_thermal_rel_release, + .unlocked_ioctl = acpi_thermal_rel_ioctl, + .llseek = no_llseek, +}; + +static struct miscdevice acpi_thermal_rel_misc_device = { + .minor = MISC_DYNAMIC_MINOR, + "acpi_thermal_rel", + &acpi_thermal_rel_fops +}; + +int acpi_thermal_rel_misc_device_add(acpi_handle handle) +{ + acpi_thermal_rel_handle = handle; + + return misc_register(&acpi_thermal_rel_misc_device); +} +EXPORT_SYMBOL(acpi_thermal_rel_misc_device_add); + +int acpi_thermal_rel_misc_device_remove(acpi_handle handle) +{ + misc_deregister(&acpi_thermal_rel_misc_device); + + return 0; +} +EXPORT_SYMBOL(acpi_thermal_rel_misc_device_remove); + +MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>"); +MODULE_AUTHOR("Jacob Pan <jacob.jun.pan@intel.com"); +MODULE_DESCRIPTION("Intel acpi thermal rel misc dev driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/thermal/int340x_thermal/acpi_thermal_rel.h b/drivers/thermal/int340x_thermal/acpi_thermal_rel.h new file mode 100644 index 000000000000..f00700bc9d79 --- /dev/null +++ b/drivers/thermal/int340x_thermal/acpi_thermal_rel.h @@ -0,0 +1,84 @@ +#ifndef __ACPI_ACPI_THERMAL_H +#define __ACPI_ACPI_THERMAL_H + +#include <asm/ioctl.h> + +#define ACPI_THERMAL_MAGIC 's' + +#define ACPI_THERMAL_GET_TRT_LEN _IOR(ACPI_THERMAL_MAGIC, 1, unsigned long) +#define ACPI_THERMAL_GET_ART_LEN _IOR(ACPI_THERMAL_MAGIC, 2, unsigned long) +#define ACPI_THERMAL_GET_TRT_COUNT _IOR(ACPI_THERMAL_MAGIC, 3, unsigned long) +#define ACPI_THERMAL_GET_ART_COUNT _IOR(ACPI_THERMAL_MAGIC, 4, unsigned long) + +#define ACPI_THERMAL_GET_TRT _IOR(ACPI_THERMAL_MAGIC, 5, unsigned long) +#define ACPI_THERMAL_GET_ART _IOR(ACPI_THERMAL_MAGIC, 6, unsigned long) + +struct art { + acpi_handle source; + acpi_handle target; + u64 weight; + u64 ac0_max; + u64 ac1_max; + u64 ac2_max; + u64 ac3_max; + u64 ac4_max; + u64 ac5_max; + u64 ac6_max; + u64 ac7_max; + u64 ac8_max; + u64 ac9_max; +} __packed; + +struct trt { + acpi_handle source; + acpi_handle target; + u64 influence; + u64 sample_period; + u64 reverved1; + u64 reverved2; + u64 reverved3; + u64 reverved4; +} __packed; + +#define ACPI_NR_ART_ELEMENTS 13 +/* for usrspace */ +union art_object { + struct { + char source_device[8]; /* ACPI single name */ + char target_device[8]; /* ACPI single name */ + u64 weight; + u64 ac0_max_level; + u64 ac1_max_level; + u64 ac2_max_level; + u64 ac3_max_level; + u64 ac4_max_level; + u64 ac5_max_level; + u64 ac6_max_level; + u64 ac7_max_level; + u64 ac8_max_level; + u64 ac9_max_level; + }; + u64 __data[ACPI_NR_ART_ELEMENTS]; +}; + +union trt_object { + struct { + char source_device[8]; /* ACPI single name */ + char target_device[8]; /* ACPI single name */ + u64 influence; + u64 sample_period; + u64 reserved[4]; + }; + u64 __data[8]; +}; + +#ifdef __KERNEL__ +int acpi_thermal_rel_misc_device_add(acpi_handle handle); +int acpi_thermal_rel_misc_device_remove(acpi_handle handle); +int acpi_parse_art(acpi_handle handle, int *art_count, struct art **arts, + bool create_dev); +int acpi_parse_trt(acpi_handle handle, int *trt_count, struct trt **trts, + bool create_dev); +#endif + +#endif /* __ACPI_ACPI_THERMAL_H */ diff --git a/drivers/thermal/int340x_thermal/int3400_thermal.c b/drivers/thermal/int340x_thermal/int3400_thermal.c new file mode 100644 index 000000000000..edc1cce117ba --- /dev/null +++ b/drivers/thermal/int340x_thermal/int3400_thermal.c @@ -0,0 +1,271 @@ +/* + * INT3400 thermal driver + * + * Copyright (C) 2014, Intel Corporation + * Authors: Zhang Rui <rui.zhang@intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/acpi.h> +#include <linux/thermal.h> +#include "acpi_thermal_rel.h" + +enum int3400_thermal_uuid { + INT3400_THERMAL_PASSIVE_1, + INT3400_THERMAL_PASSIVE_2, + INT3400_THERMAL_ACTIVE, + INT3400_THERMAL_CRITICAL, + INT3400_THERMAL_COOLING_MODE, + INT3400_THERMAL_MAXIMUM_UUID, +}; + +static u8 *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = { + "42A441D6-AE6A-462b-A84B-4A8CE79027D3", + "9E04115A-AE87-4D1C-9500-0F3E340BFE75", + "3A95C389-E4B8-4629-A526-C52C88626BAE", + "97C68AE7-15FA-499c-B8C9-5DA81D606E0A", + "16CAF1B7-DD38-40ed-B1C1-1B8A1913D531", +}; + +struct int3400_thermal_priv { + struct acpi_device *adev; + struct thermal_zone_device *thermal; + int mode; + int art_count; + struct art *arts; + int trt_count; + struct trt *trts; + u8 uuid_bitmap; + int rel_misc_dev_res; +}; + +static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv) +{ + struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL}; + union acpi_object *obja, *objb; + int i, j; + int result = 0; + acpi_status status; + + status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf); + if (ACPI_FAILURE(status)) + return -ENODEV; + + obja = (union acpi_object *)buf.pointer; + if (obja->type != ACPI_TYPE_PACKAGE) { + result = -EINVAL; + goto end; + } + + for (i = 0; i < obja->package.count; i++) { + objb = &obja->package.elements[i]; + if (objb->type != ACPI_TYPE_BUFFER) { + result = -EINVAL; + goto end; + } + + /* UUID must be 16 bytes */ + if (objb->buffer.length != 16) { + result = -EINVAL; + goto end; + } + + for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) { + u8 uuid[16]; + + acpi_str_to_uuid(int3400_thermal_uuids[j], uuid); + if (!strncmp(uuid, objb->buffer.pointer, 16)) { + priv->uuid_bitmap |= (1 << j); + break; + } + } + } + +end: + kfree(buf.pointer); + return result; +} + +static int int3400_thermal_run_osc(acpi_handle handle, + enum int3400_thermal_uuid uuid, bool enable) +{ + u32 ret, buf[2]; + acpi_status status; + int result = 0; + struct acpi_osc_context context = { + .uuid_str = int3400_thermal_uuids[uuid], + .rev = 1, + .cap.length = 8, + }; + + buf[OSC_QUERY_DWORD] = 0; + buf[OSC_SUPPORT_DWORD] = enable; + + context.cap.pointer = buf; + + status = acpi_run_osc(handle, &context); + if (ACPI_SUCCESS(status)) { + ret = *((u32 *)(context.ret.pointer + 4)); + if (ret != enable) + result = -EPERM; + } else + result = -EPERM; + + kfree(context.ret.pointer); + return result; +} + +static int int3400_thermal_get_temp(struct thermal_zone_device *thermal, + unsigned long *temp) +{ + *temp = 20 * 1000; /* faked temp sensor with 20C */ + return 0; +} + +static int int3400_thermal_get_mode(struct thermal_zone_device *thermal, + enum thermal_device_mode *mode) +{ + struct int3400_thermal_priv *priv = thermal->devdata; + + if (!priv) + return -EINVAL; + + *mode = priv->mode; + + return 0; +} + +static int int3400_thermal_set_mode(struct thermal_zone_device *thermal, + enum thermal_device_mode mode) +{ + struct int3400_thermal_priv *priv = thermal->devdata; + bool enable; + int result = 0; + + if (!priv) + return -EINVAL; + + if (mode == THERMAL_DEVICE_ENABLED) + enable = true; + else if (mode == THERMAL_DEVICE_DISABLED) + enable = false; + else + return -EINVAL; + + if (enable != priv->mode) { + priv->mode = enable; + /* currently, only PASSIVE COOLING is supported */ + result = int3400_thermal_run_osc(priv->adev->handle, + INT3400_THERMAL_PASSIVE_1, enable); + } + return result; +} + +static struct thermal_zone_device_ops int3400_thermal_ops = { + .get_temp = int3400_thermal_get_temp, +}; + +static struct thermal_zone_params int3400_thermal_params = { + .governor_name = "user_space", + .no_hwmon = true, +}; + +static int int3400_thermal_probe(struct platform_device *pdev) +{ + struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); + struct int3400_thermal_priv *priv; + int result; + + if (!adev) + return -ENODEV; + + priv = kzalloc(sizeof(struct int3400_thermal_priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->adev = adev; + + result = int3400_thermal_get_uuids(priv); + if (result) + goto free_priv; + + result = acpi_parse_art(priv->adev->handle, &priv->art_count, + &priv->arts, true); + if (result) + goto free_priv; + + + result = acpi_parse_trt(priv->adev->handle, &priv->trt_count, + &priv->trts, true); + if (result) + goto free_art; + + platform_set_drvdata(pdev, priv); + + if (priv->uuid_bitmap & 1 << INT3400_THERMAL_PASSIVE_1) { + int3400_thermal_ops.get_mode = int3400_thermal_get_mode; + int3400_thermal_ops.set_mode = int3400_thermal_set_mode; + } + priv->thermal = thermal_zone_device_register("INT3400 Thermal", 0, 0, + priv, &int3400_thermal_ops, + &int3400_thermal_params, 0, 0); + if (IS_ERR(priv->thermal)) { + result = PTR_ERR(priv->thermal); + goto free_trt; + } + + priv->rel_misc_dev_res = acpi_thermal_rel_misc_device_add( + priv->adev->handle); + + return 0; +free_trt: + kfree(priv->trts); +free_art: + kfree(priv->arts); +free_priv: + kfree(priv); + return result; +} + +static int int3400_thermal_remove(struct platform_device *pdev) +{ + struct int3400_thermal_priv *priv = platform_get_drvdata(pdev); + + if (!priv->rel_misc_dev_res) + acpi_thermal_rel_misc_device_remove(priv->adev->handle); + + thermal_zone_device_unregister(priv->thermal); + kfree(priv->trts); + kfree(priv->arts); + kfree(priv); + return 0; +} + +static const struct acpi_device_id int3400_thermal_match[] = { + {"INT3400", 0}, + {} +}; + +MODULE_DEVICE_TABLE(acpi, int3400_thermal_match); + +static struct platform_driver int3400_thermal_driver = { + .probe = int3400_thermal_probe, + .remove = int3400_thermal_remove, + .driver = { + .name = "int3400 thermal", + .owner = THIS_MODULE, + .acpi_match_table = ACPI_PTR(int3400_thermal_match), + }, +}; + +module_platform_driver(int3400_thermal_driver); + +MODULE_DESCRIPTION("INT3400 Thermal driver"); +MODULE_AUTHOR("Zhang Rui <rui.zhang@intel.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/thermal/int340x_thermal/int3402_thermal.c b/drivers/thermal/int340x_thermal/int3402_thermal.c new file mode 100644 index 000000000000..a5d08c14ba24 --- /dev/null +++ b/drivers/thermal/int340x_thermal/int3402_thermal.c @@ -0,0 +1,242 @@ +/* + * INT3402 thermal driver for memory temperature reporting + * + * Copyright (C) 2014, Intel Corporation + * Authors: Aaron Lu <aaron.lu@intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/acpi.h> +#include <linux/thermal.h> + +#define ACPI_ACTIVE_COOLING_MAX_NR 10 + +struct active_trip { + unsigned long temp; + int id; + bool valid; +}; + +struct int3402_thermal_data { + unsigned long *aux_trips; + int aux_trip_nr; + unsigned long psv_temp; + int psv_trip_id; + unsigned long crt_temp; + int crt_trip_id; + unsigned long hot_temp; + int hot_trip_id; + struct active_trip act_trips[ACPI_ACTIVE_COOLING_MAX_NR]; + acpi_handle *handle; +}; + +static int int3402_thermal_get_zone_temp(struct thermal_zone_device *zone, + unsigned long *temp) +{ + struct int3402_thermal_data *d = zone->devdata; + unsigned long long tmp; + acpi_status status; + + status = acpi_evaluate_integer(d->handle, "_TMP", NULL, &tmp); + if (ACPI_FAILURE(status)) + return -ENODEV; + + /* _TMP returns the temperature in tenths of degrees Kelvin */ + *temp = DECI_KELVIN_TO_MILLICELSIUS(tmp); + + return 0; +} + +static int int3402_thermal_get_trip_temp(struct thermal_zone_device *zone, + int trip, unsigned long *temp) +{ + struct int3402_thermal_data *d = zone->devdata; + int i; + + if (trip < d->aux_trip_nr) + *temp = d->aux_trips[trip]; + else if (trip == d->crt_trip_id) + *temp = d->crt_temp; + else if (trip == d->psv_trip_id) + *temp = d->psv_temp; + else if (trip == d->hot_trip_id) + *temp = d->hot_temp; + else { + for (i = 0; i < ACPI_ACTIVE_COOLING_MAX_NR; i++) { + if (d->act_trips[i].valid && + d->act_trips[i].id == trip) { + *temp = d->act_trips[i].temp; + break; + } + } + if (i == ACPI_ACTIVE_COOLING_MAX_NR) + return -EINVAL; + } + return 0; +} + +static int int3402_thermal_get_trip_type(struct thermal_zone_device *zone, + int trip, enum thermal_trip_type *type) +{ + struct int3402_thermal_data *d = zone->devdata; + int i; + + if (trip < d->aux_trip_nr) + *type = THERMAL_TRIP_PASSIVE; + else if (trip == d->crt_trip_id) + *type = THERMAL_TRIP_CRITICAL; + else if (trip == d->hot_trip_id) + *type = THERMAL_TRIP_HOT; + else if (trip == d->psv_trip_id) + *type = THERMAL_TRIP_PASSIVE; + else { + for (i = 0; i < ACPI_ACTIVE_COOLING_MAX_NR; i++) { + if (d->act_trips[i].valid && + d->act_trips[i].id == trip) { + *type = THERMAL_TRIP_ACTIVE; + break; + } + } + if (i == ACPI_ACTIVE_COOLING_MAX_NR) + return -EINVAL; + } + return 0; +} + +static int int3402_thermal_set_trip_temp(struct thermal_zone_device *zone, int trip, + unsigned long temp) +{ + struct int3402_thermal_data *d = zone->devdata; + acpi_status status; + char name[10]; + + snprintf(name, sizeof(name), "PAT%d", trip); + status = acpi_execute_simple_method(d->handle, name, + MILLICELSIUS_TO_DECI_KELVIN(temp)); + if (ACPI_FAILURE(status)) + return -EIO; + + d->aux_trips[trip] = temp; + return 0; +} + +static struct thermal_zone_device_ops int3402_thermal_zone_ops = { + .get_temp = int3402_thermal_get_zone_temp, + .get_trip_temp = int3402_thermal_get_trip_temp, + .get_trip_type = int3402_thermal_get_trip_type, + .set_trip_temp = int3402_thermal_set_trip_temp, +}; + +static struct thermal_zone_params int3402_thermal_params = { + .governor_name = "user_space", + .no_hwmon = true, +}; + +static int int3402_thermal_get_temp(acpi_handle handle, char *name, + unsigned long *temp) +{ + unsigned long long r; + acpi_status status; + + status = acpi_evaluate_integer(handle, name, NULL, &r); + if (ACPI_FAILURE(status)) + return -EIO; + + *temp = DECI_KELVIN_TO_MILLICELSIUS(r); + return 0; +} + +static int int3402_thermal_probe(struct platform_device *pdev) +{ + struct acpi_device *adev = ACPI_COMPANION(&pdev->dev); + struct int3402_thermal_data *d; + struct thermal_zone_device *zone; + acpi_status status; + unsigned long long trip_cnt; + int trip_mask = 0, i; + + if (!acpi_has_method(adev->handle, "_TMP")) + return -ENODEV; + + d = devm_kzalloc(&pdev->dev, sizeof(*d), GFP_KERNEL); + if (!d) + return -ENOMEM; + + status = acpi_evaluate_integer(adev->handle, "PATC", NULL, &trip_cnt); + if (ACPI_FAILURE(status)) + trip_cnt = 0; + else { + d->aux_trips = devm_kzalloc(&pdev->dev, + sizeof(*d->aux_trips) * trip_cnt, GFP_KERNEL); + if (!d->aux_trips) + return -ENOMEM; + trip_mask = trip_cnt - 1; + d->handle = adev->handle; + d->aux_trip_nr = trip_cnt; + } + + d->crt_trip_id = -1; + if (!int3402_thermal_get_temp(adev->handle, "_CRT", &d->crt_temp)) + d->crt_trip_id = trip_cnt++; + d->hot_trip_id = -1; + if (!int3402_thermal_get_temp(adev->handle, "_HOT", &d->hot_temp)) + d->hot_trip_id = trip_cnt++; + d->psv_trip_id = -1; + if (!int3402_thermal_get_temp(adev->handle, "_PSV", &d->psv_temp)) + d->psv_trip_id = trip_cnt++; + for (i = 0; i < ACPI_ACTIVE_COOLING_MAX_NR; i++) { + char name[5] = { '_', 'A', 'C', '0' + i, '\0' }; + if (int3402_thermal_get_temp(adev->handle, name, + &d->act_trips[i].temp)) + break; + d->act_trips[i].id = trip_cnt++; + d->act_trips[i].valid = true; + } + + zone = thermal_zone_device_register(acpi_device_bid(adev), trip_cnt, + trip_mask, d, + &int3402_thermal_zone_ops, + &int3402_thermal_params, + 0, 0); + if (IS_ERR(zone)) + return PTR_ERR(zone); + platform_set_drvdata(pdev, zone); + + return 0; +} + +static int int3402_thermal_remove(struct platform_device *pdev) +{ + struct thermal_zone_device *zone = platform_get_drvdata(pdev); + + thermal_zone_device_unregister(zone); + return 0; +} + +static const struct acpi_device_id int3402_thermal_match[] = { + {"INT3402", 0}, + {} +}; + +MODULE_DEVICE_TABLE(acpi, int3402_thermal_match); + +static struct platform_driver int3402_thermal_driver = { + .probe = int3402_thermal_probe, + .remove = int3402_thermal_remove, + .driver = { + .name = "int3402 thermal", + .owner = THIS_MODULE, + .acpi_match_table = int3402_thermal_match, + }, +}; + +module_platform_driver(int3402_thermal_driver); + +MODULE_DESCRIPTION("INT3402 Thermal driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/thermal/int340x_thermal/int3403_thermal.c b/drivers/thermal/int340x_thermal/int3403_thermal.c new file mode 100644 index 000000000000..d20dba986f0f --- /dev/null +++ b/drivers/thermal/int340x_thermal/int3403_thermal.c @@ -0,0 +1,477 @@ +/* + * ACPI INT3403 thermal driver + * Copyright (c) 2013, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/acpi.h> +#include <linux/thermal.h> +#include <linux/platform_device.h> + +#define INT3403_TYPE_SENSOR 0x03 +#define INT3403_TYPE_CHARGER 0x0B +#define INT3403_TYPE_BATTERY 0x0C +#define INT3403_PERF_CHANGED_EVENT 0x80 +#define INT3403_THERMAL_EVENT 0x90 + +#define DECI_KELVIN_TO_MILLI_CELSIUS(t, off) (((t) - (off)) * 100) +#define KELVIN_OFFSET 2732 +#define MILLI_CELSIUS_TO_DECI_KELVIN(t, off) (((t) / 100) + (off)) + +struct int3403_sensor { + struct thermal_zone_device *tzone; + unsigned long *thresholds; + unsigned long crit_temp; + int crit_trip_id; + unsigned long psv_temp; + int psv_trip_id; + +}; + +struct int3403_performance_state { + u64 performance; + u64 power; + u64 latency; + u64 linear; + u64 control; + u64 raw_performace; + char *raw_unit; + int reserved; +}; + +struct int3403_cdev { + struct thermal_cooling_device *cdev; + unsigned long max_state; +}; + +struct int3403_priv { + struct platform_device *pdev; + struct acpi_device *adev; + unsigned long long type; + void *priv; +}; + +static int sys_get_curr_temp(struct thermal_zone_device *tzone, + unsigned long *temp) +{ + struct int3403_priv *priv = tzone->devdata; + struct acpi_device *device = priv->adev; + unsigned long long tmp; + acpi_status status; + + status = acpi_evaluate_integer(device->handle, "_TMP", NULL, &tmp); + if (ACPI_FAILURE(status)) + return -EIO; + + *temp = DECI_KELVIN_TO_MILLI_CELSIUS(tmp, KELVIN_OFFSET); + + return 0; +} + +static int sys_get_trip_hyst(struct thermal_zone_device *tzone, + int trip, unsigned long *temp) +{ + struct int3403_priv *priv = tzone->devdata; + struct acpi_device *device = priv->adev; + unsigned long long hyst; + acpi_status status; + + status = acpi_evaluate_integer(device->handle, "GTSH", NULL, &hyst); + if (ACPI_FAILURE(status)) + return -EIO; + + *temp = DECI_KELVIN_TO_MILLI_CELSIUS(hyst, KELVIN_OFFSET); + + return 0; +} + +static int sys_get_trip_temp(struct thermal_zone_device *tzone, + int trip, unsigned long *temp) +{ + struct int3403_priv *priv = tzone->devdata; + struct int3403_sensor *obj = priv->priv; + + if (priv->type != INT3403_TYPE_SENSOR || !obj) + return -EINVAL; + + if (trip == obj->crit_trip_id) + *temp = obj->crit_temp; + else if (trip == obj->psv_trip_id) + *temp = obj->psv_temp; + else { + /* + * get_trip_temp is a mandatory callback but + * PATx method doesn't return any value, so return + * cached value, which was last set from user space + */ + *temp = obj->thresholds[trip]; + } + + return 0; +} + +static int sys_get_trip_type(struct thermal_zone_device *thermal, + int trip, enum thermal_trip_type *type) +{ + struct int3403_priv *priv = thermal->devdata; + struct int3403_sensor *obj = priv->priv; + + /* Mandatory callback, may not mean much here */ + if (trip == obj->crit_trip_id) + *type = THERMAL_TRIP_CRITICAL; + else + *type = THERMAL_TRIP_PASSIVE; + + return 0; +} + +int sys_set_trip_temp(struct thermal_zone_device *tzone, int trip, + unsigned long temp) +{ + struct int3403_priv *priv = tzone->devdata; + struct acpi_device *device = priv->adev; + struct int3403_sensor *obj = priv->priv; + acpi_status status; + char name[10]; + int ret = 0; + + snprintf(name, sizeof(name), "PAT%d", trip); + if (acpi_has_method(device->handle, name)) { + status = acpi_execute_simple_method(device->handle, name, + MILLI_CELSIUS_TO_DECI_KELVIN(temp, + KELVIN_OFFSET)); + if (ACPI_FAILURE(status)) + ret = -EIO; + else + obj->thresholds[trip] = temp; + } else { + ret = -EIO; + dev_err(&device->dev, "sys_set_trip_temp: method not found\n"); + } + + return ret; +} + +static struct thermal_zone_device_ops tzone_ops = { + .get_temp = sys_get_curr_temp, + .get_trip_temp = sys_get_trip_temp, + .get_trip_type = sys_get_trip_type, + .set_trip_temp = sys_set_trip_temp, + .get_trip_hyst = sys_get_trip_hyst, +}; + +static struct thermal_zone_params int3403_thermal_params = { + .governor_name = "user_space", + .no_hwmon = true, +}; + +static void int3403_notify(acpi_handle handle, + u32 event, void *data) +{ + struct int3403_priv *priv = data; + struct int3403_sensor *obj; + + if (!priv) + return; + + obj = priv->priv; + if (priv->type != INT3403_TYPE_SENSOR || !obj) + return; + + switch (event) { + case INT3403_PERF_CHANGED_EVENT: + break; + case INT3403_THERMAL_EVENT: + thermal_zone_device_update(obj->tzone); + break; + default: + dev_err(&priv->pdev->dev, "Unsupported event [0x%x]\n", event); + break; + } +} + +static int sys_get_trip_crt(struct acpi_device *device, unsigned long *temp) +{ + unsigned long long crt; + acpi_status status; + + status = acpi_evaluate_integer(device->handle, "_CRT", NULL, &crt); + if (ACPI_FAILURE(status)) + return -EIO; + + *temp = DECI_KELVIN_TO_MILLI_CELSIUS(crt, KELVIN_OFFSET); + + return 0; +} + +static int sys_get_trip_psv(struct acpi_device *device, unsigned long *temp) +{ + unsigned long long psv; + acpi_status status; + + status = acpi_evaluate_integer(device->handle, "_PSV", NULL, &psv); + if (ACPI_FAILURE(status)) + return -EIO; + + *temp = DECI_KELVIN_TO_MILLI_CELSIUS(psv, KELVIN_OFFSET); + + return 0; +} + +static int int3403_sensor_add(struct int3403_priv *priv) +{ + int result = 0; + acpi_status status; + struct int3403_sensor *obj; + unsigned long long trip_cnt; + int trip_mask = 0; + + obj = devm_kzalloc(&priv->pdev->dev, sizeof(*obj), GFP_KERNEL); + if (!obj) + return -ENOMEM; + + priv->priv = obj; + + status = acpi_evaluate_integer(priv->adev->handle, "PATC", NULL, + &trip_cnt); + if (ACPI_FAILURE(status)) + trip_cnt = 0; + + if (trip_cnt) { + /* We have to cache, thresholds can't be readback */ + obj->thresholds = devm_kzalloc(&priv->pdev->dev, + sizeof(*obj->thresholds) * trip_cnt, + GFP_KERNEL); + if (!obj->thresholds) { + result = -ENOMEM; + goto err_free_obj; + } + trip_mask = BIT(trip_cnt) - 1; + } + + obj->psv_trip_id = -1; + if (!sys_get_trip_psv(priv->adev, &obj->psv_temp)) + obj->psv_trip_id = trip_cnt++; + + obj->crit_trip_id = -1; + if (!sys_get_trip_crt(priv->adev, &obj->crit_temp)) + obj->crit_trip_id = trip_cnt++; + + obj->tzone = thermal_zone_device_register(acpi_device_bid(priv->adev), + trip_cnt, trip_mask, priv, &tzone_ops, + &int3403_thermal_params, 0, 0); + if (IS_ERR(obj->tzone)) { + result = PTR_ERR(obj->tzone); + obj->tzone = NULL; + goto err_free_obj; + } + + result = acpi_install_notify_handler(priv->adev->handle, + ACPI_DEVICE_NOTIFY, int3403_notify, + (void *)priv); + if (result) + goto err_free_obj; + + return 0; + + err_free_obj: + if (obj->tzone) + thermal_zone_device_unregister(obj->tzone); + return result; +} + +static int int3403_sensor_remove(struct int3403_priv *priv) +{ + struct int3403_sensor *obj = priv->priv; + + thermal_zone_device_unregister(obj->tzone); + return 0; +} + +/* INT3403 Cooling devices */ +static int int3403_get_max_state(struct thermal_cooling_device *cdev, + unsigned long *state) +{ + struct int3403_priv *priv = cdev->devdata; + struct int3403_cdev *obj = priv->priv; + + *state = obj->max_state; + return 0; +} + +static int int3403_get_cur_state(struct thermal_cooling_device *cdev, + unsigned long *state) +{ + struct int3403_priv *priv = cdev->devdata; + unsigned long long level; + acpi_status status; + + status = acpi_evaluate_integer(priv->adev->handle, "PPPC", NULL, &level); + if (ACPI_SUCCESS(status)) { + *state = level; + return 0; + } else + return -EINVAL; +} + +static int +int3403_set_cur_state(struct thermal_cooling_device *cdev, unsigned long state) +{ + struct int3403_priv *priv = cdev->devdata; + acpi_status status; + + status = acpi_execute_simple_method(priv->adev->handle, "SPPC", state); + if (ACPI_SUCCESS(status)) + return 0; + else + return -EINVAL; +} + +static const struct thermal_cooling_device_ops int3403_cooling_ops = { + .get_max_state = int3403_get_max_state, + .get_cur_state = int3403_get_cur_state, + .set_cur_state = int3403_set_cur_state, +}; + +static int int3403_cdev_add(struct int3403_priv *priv) +{ + int result = 0; + acpi_status status; + struct int3403_cdev *obj; + struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL }; + union acpi_object *p; + + obj = devm_kzalloc(&priv->pdev->dev, sizeof(*obj), GFP_KERNEL); + if (!obj) + return -ENOMEM; + + status = acpi_evaluate_object(priv->adev->handle, "PPSS", NULL, &buf); + if (ACPI_FAILURE(status)) + return -ENODEV; + + p = buf.pointer; + if (!p || (p->type != ACPI_TYPE_PACKAGE)) { + printk(KERN_WARNING "Invalid PPSS data\n"); + return -EFAULT; + } + + obj->max_state = p->package.count - 1; + obj->cdev = + thermal_cooling_device_register(acpi_device_bid(priv->adev), + priv, &int3403_cooling_ops); + if (IS_ERR(obj->cdev)) + result = PTR_ERR(obj->cdev); + + priv->priv = obj; + + /* TODO: add ACPI notification support */ + + return result; +} + +static int int3403_cdev_remove(struct int3403_priv *priv) +{ + struct int3403_cdev *obj = priv->priv; + + thermal_cooling_device_unregister(obj->cdev); + return 0; +} + +static int int3403_add(struct platform_device *pdev) +{ + struct int3403_priv *priv; + int result = 0; + acpi_status status; + + priv = devm_kzalloc(&pdev->dev, sizeof(struct int3403_priv), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->pdev = pdev; + priv->adev = ACPI_COMPANION(&(pdev->dev)); + if (!priv->adev) { + result = -EINVAL; + goto err; + } + + status = acpi_evaluate_integer(priv->adev->handle, "PTYP", + NULL, &priv->type); + if (ACPI_FAILURE(status)) { + result = -EINVAL; + goto err; + } + + platform_set_drvdata(pdev, priv); + switch (priv->type) { + case INT3403_TYPE_SENSOR: + result = int3403_sensor_add(priv); + break; + case INT3403_TYPE_CHARGER: + case INT3403_TYPE_BATTERY: + result = int3403_cdev_add(priv); + break; + default: + result = -EINVAL; + } + + if (result) + goto err; + return result; + +err: + return result; +} + +static int int3403_remove(struct platform_device *pdev) +{ + struct int3403_priv *priv = platform_get_drvdata(pdev); + + switch (priv->type) { + case INT3403_TYPE_SENSOR: + int3403_sensor_remove(priv); + break; + case INT3403_TYPE_CHARGER: + case INT3403_TYPE_BATTERY: + int3403_cdev_remove(priv); + break; + default: + break; + } + + return 0; +} + +static const struct acpi_device_id int3403_device_ids[] = { + {"INT3403", 0}, + {"", 0}, +}; +MODULE_DEVICE_TABLE(acpi, int3403_device_ids); + +static struct platform_driver int3403_driver = { + .probe = int3403_add, + .remove = int3403_remove, + .driver = { + .name = "int3403 thermal", + .owner = THIS_MODULE, + .acpi_match_table = int3403_device_ids, + }, +}; + +module_platform_driver(int3403_driver); + +MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("ACPI INT3403 thermal driver"); diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c index 4b2b999b7611..f8eb625b8400 100644 --- a/drivers/thermal/of-thermal.c +++ b/drivers/thermal/of-thermal.c @@ -401,6 +401,10 @@ thermal_zone_of_sensor_register(struct device *dev, int sensor_id, struct of_phandle_args sensor_specs; int ret, id; + /* Check whether child is enabled or not */ + if (!of_device_is_available(child)) + continue; + /* For now, thermal framework supports only 1 sensor per zone */ ret = of_parse_phandle_with_args(child, "thermal-sensors", "#thermal-sensor-cells", @@ -771,6 +775,10 @@ int __init of_parse_thermal_zones(void) struct thermal_zone_device *zone; struct thermal_zone_params *tzp; + /* Check whether child is enabled or not */ + if (!of_device_is_available(child)) + continue; + tz = thermal_of_build_thermal_zone(child); if (IS_ERR(tz)) { pr_err("failed to build thermal zone %s: %ld\n", @@ -838,6 +846,10 @@ void of_thermal_destroy_zones(void) for_each_child_of_node(np, child) { struct thermal_zone_device *zone; + /* Check whether child is enabled or not */ + if (!of_device_is_available(child)) + continue; + zone = thermal_zone_get_zone_by_name(child->name); if (IS_ERR(zone)) continue; diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c index f251521baaa2..fdd1f523a1ed 100644 --- a/drivers/thermal/step_wise.c +++ b/drivers/thermal/step_wise.c @@ -23,6 +23,7 @@ */ #include <linux/thermal.h> +#include <trace/events/thermal.h> #include "thermal_core.h" @@ -76,7 +77,7 @@ static unsigned long get_target_state(struct thermal_instance *instance, next_target = instance->upper; break; case THERMAL_TREND_DROPPING: - if (cur_state == instance->lower) { + if (cur_state <= instance->lower) { if (!throttle) next_target = THERMAL_NO_TARGET; } else { @@ -129,8 +130,10 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) trend = get_tz_trend(tz, trip); - if (tz->temperature >= trip_temp) + if (tz->temperature >= trip_temp) { throttle = true; + trace_thermal_zone_trip(tz, trip, trip_type); + } dev_dbg(&tz->device, "Trip%d[type=%d,temp=%ld]:trend=%d,throttle=%d\n", trip, trip_type, trip_temp, trend, throttle); diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 1e23f4f8d2c2..9bf10aa6069b 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -38,6 +38,9 @@ #include <net/netlink.h> #include <net/genetlink.h> +#define CREATE_TRACE_POINTS +#include <trace/events/thermal.h> + #include "thermal_core.h" #include "thermal_hwmon.h" @@ -368,6 +371,8 @@ static void handle_critical_trips(struct thermal_zone_device *tz, if (tz->temperature < trip_temp) return; + trace_thermal_zone_trip(tz, trip, trip_type); + if (tz->ops->notify) tz->ops->notify(tz, trip, trip_type); @@ -463,6 +468,7 @@ static void update_temperature(struct thermal_zone_device *tz) tz->temperature = temp; mutex_unlock(&tz->lock); + trace_thermal_temperature(tz); dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n", tz->last_temperature, tz->temperature); } @@ -1287,6 +1293,7 @@ void thermal_cdev_update(struct thermal_cooling_device *cdev) mutex_unlock(&cdev->lock); cdev->ops->set_cur_state(cdev, target); cdev->updated = true; + trace_cdev_update(cdev, target); dev_dbg(&cdev->device, "set to state %lu\n", target); } EXPORT_SYMBOL(thermal_cdev_update); @@ -1790,6 +1797,10 @@ static int __init thermal_register_governors(void) if (result) return result; + result = thermal_gov_bang_bang_register(); + if (result) + return result; + return thermal_gov_user_space_register(); } @@ -1797,6 +1808,7 @@ static void thermal_unregister_governors(void) { thermal_gov_step_wise_unregister(); thermal_gov_fair_share_unregister(); + thermal_gov_bang_bang_unregister(); thermal_gov_user_space_unregister(); } diff --git a/drivers/thermal/thermal_core.h b/drivers/thermal/thermal_core.h index 3db339fb636f..d15d243de27a 100644 --- a/drivers/thermal/thermal_core.h +++ b/drivers/thermal/thermal_core.h @@ -69,6 +69,14 @@ static inline int thermal_gov_fair_share_register(void) { return 0; } static inline void thermal_gov_fair_share_unregister(void) {} #endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */ +#ifdef CONFIG_THERMAL_GOV_BANG_BANG +int thermal_gov_bang_bang_register(void); +void thermal_gov_bang_bang_unregister(void); +#else +static inline int thermal_gov_bang_bang_register(void) { return 0; } +static inline void thermal_gov_bang_bang_unregister(void) {} +#endif /* CONFIG_THERMAL_GOV_BANG_BANG */ + #ifdef CONFIG_THERMAL_GOV_USER_SPACE int thermal_gov_user_space_register(void); void thermal_gov_user_space_unregister(void); diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 1e0a317d3dcd..3860d02729dc 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -167,6 +167,9 @@ static struct page *balloon_next_page(struct page *page) static enum bp_state update_schedule(enum bp_state state) { + if (state == BP_ECANCELED) + return BP_ECANCELED; + if (state == BP_DONE) { balloon_stats.schedule_delay = 1; balloon_stats.retry_count = 1; diff --git a/drivers/xen/pci.c b/drivers/xen/pci.c index dd9c249ea311..95ee4302ffb8 100644 --- a/drivers/xen/pci.c +++ b/drivers/xen/pci.c @@ -41,24 +41,29 @@ static int xen_add_device(struct device *dev) #endif if (pci_seg_supported) { - struct physdev_pci_device_add add = { - .seg = pci_domain_nr(pci_dev->bus), - .bus = pci_dev->bus->number, - .devfn = pci_dev->devfn + struct { + struct physdev_pci_device_add add; + uint32_t pxm; + } add_ext = { + .add.seg = pci_domain_nr(pci_dev->bus), + .add.bus = pci_dev->bus->number, + .add.devfn = pci_dev->devfn }; + struct physdev_pci_device_add *add = &add_ext.add; + #ifdef CONFIG_ACPI acpi_handle handle; #endif #ifdef CONFIG_PCI_IOV if (pci_dev->is_virtfn) { - add.flags = XEN_PCI_DEV_VIRTFN; - add.physfn.bus = physfn->bus->number; - add.physfn.devfn = physfn->devfn; + add->flags = XEN_PCI_DEV_VIRTFN; + add->physfn.bus = physfn->bus->number; + add->physfn.devfn = physfn->devfn; } else #endif if (pci_ari_enabled(pci_dev->bus) && PCI_SLOT(pci_dev->devfn)) - add.flags = XEN_PCI_DEV_EXTFN; + add->flags = XEN_PCI_DEV_EXTFN; #ifdef CONFIG_ACPI handle = ACPI_HANDLE(&pci_dev->dev); @@ -77,8 +82,8 @@ static int xen_add_device(struct device *dev) status = acpi_evaluate_integer(handle, "_PXM", NULL, &pxm); if (ACPI_SUCCESS(status)) { - add.optarr[0] = pxm; - add.flags |= XEN_PCI_DEV_PXM; + add->optarr[0] = pxm; + add->flags |= XEN_PCI_DEV_PXM; break; } status = acpi_get_parent(handle, &handle); @@ -86,7 +91,7 @@ static int xen_add_device(struct device *dev) } #endif /* CONFIG_ACPI */ - r = HYPERVISOR_physdev_op(PHYSDEVOP_pci_device_add, &add); + r = HYPERVISOR_physdev_op(PHYSDEVOP_pci_device_add, add); if (r != -ENOSYS) return r; pci_seg_supported = false; diff --git a/fs/Kconfig b/fs/Kconfig index db5dc1598716..664991afe0c0 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -67,6 +67,7 @@ source "fs/quota/Kconfig" source "fs/autofs4/Kconfig" source "fs/fuse/Kconfig" +source "fs/overlayfs/Kconfig" menu "Caches" diff --git a/fs/Makefile b/fs/Makefile index 90c88529892b..34a1b9dea6dd 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -104,6 +104,7 @@ obj-$(CONFIG_QNX6FS_FS) += qnx6/ obj-$(CONFIG_AUTOFS4_FS) += autofs4/ obj-$(CONFIG_ADFS_FS) += adfs/ obj-$(CONFIG_FUSE_FS) += fuse/ +obj-$(CONFIG_OVERLAYFS_FS) += overlayfs/ obj-$(CONFIG_UDF_FS) += udf/ obj-$(CONFIG_SUN_OPENPROMFS) += openpromfs/ obj-$(CONFIG_OMFS_FS) += omfs/ diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 8d2b76e29d3b..4399f0c3a4ce 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -765,23 +765,6 @@ out: return ret; } -/* copy of check_sticky in fs/namei.c() -* It's inline, so penalty for filesystems that don't use sticky bit is -* minimal. -*/ -static inline int btrfs_check_sticky(struct inode *dir, struct inode *inode) -{ - kuid_t fsuid = current_fsuid(); - - if (!(dir->i_mode & S_ISVTX)) - return 0; - if (uid_eq(inode->i_uid, fsuid)) - return 0; - if (uid_eq(dir->i_uid, fsuid)) - return 0; - return !capable(CAP_FOWNER); -} - /* copy of may_delete in fs/namei.c() * Check whether we can remove a link victim from directory dir, check * whether the type of victim is right. @@ -817,8 +800,7 @@ static int btrfs_may_delete(struct inode *dir, struct dentry *victim, int isdir) return error; if (IS_APPEND(dir)) return -EPERM; - if (btrfs_check_sticky(dir, victim->d_inode)|| - IS_APPEND(victim->d_inode)|| + if (check_sticky(dir, victim->d_inode) || IS_APPEND(victim->d_inode) || IS_IMMUTABLE(victim->d_inode) || IS_SWAPFILE(victim->d_inode)) return -EPERM; if (isdir) { diff --git a/fs/dcache.c b/fs/dcache.c index d5a23fd0da90..3ffef7f4e5cd 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2673,11 +2673,13 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry) if (!IS_ROOT(new)) { spin_unlock(&inode->i_lock); dput(new); + iput(inode); return ERR_PTR(-EIO); } if (d_ancestor(new, dentry)) { spin_unlock(&inode->i_lock); dput(new); + iput(inode); return ERR_PTR(-EIO); } write_seqlock(&rename_lock); diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c index 1b119d3bf924..c4cd1fd86cc2 100644 --- a/fs/ecryptfs/main.c +++ b/fs/ecryptfs/main.c @@ -566,6 +566,13 @@ static struct dentry *ecryptfs_mount(struct file_system_type *fs_type, int flags s->s_maxbytes = path.dentry->d_sb->s_maxbytes; s->s_blocksize = path.dentry->d_sb->s_blocksize; s->s_magic = ECRYPTFS_SUPER_MAGIC; + s->s_stack_depth = path.dentry->d_sb->s_stack_depth + 1; + + rc = -EINVAL; + if (s->s_stack_depth > FILESYSTEM_MAX_STACK_DEPTH) { + pr_err("eCryptfs: maximum fs stacking depth exceeded\n"); + goto out_free; + } inode = ecryptfs_get_inode(path.dentry->d_inode, s); rc = PTR_ERR(inode); diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index adb559de23c1..123798c5ac31 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3148,6 +3148,39 @@ static void ext4_update_dir_count(handle_t *handle, struct ext4_renament *ent) } } +static struct inode *ext4_whiteout_for_rename(struct ext4_renament *ent, + int credits, handle_t **h) +{ + struct inode *wh; + handle_t *handle; + int retries = 0; + + /* + * for inode block, sb block, group summaries, + * and inode bitmap + */ + credits += (EXT4_MAXQUOTAS_TRANS_BLOCKS(ent->dir->i_sb) + + EXT4_XATTR_TRANS_BLOCKS + 4); +retry: + wh = ext4_new_inode_start_handle(ent->dir, S_IFCHR | WHITEOUT_MODE, + &ent->dentry->d_name, 0, NULL, + EXT4_HT_DIR, credits); + + handle = ext4_journal_current_handle(); + if (IS_ERR(wh)) { + if (handle) + ext4_journal_stop(handle); + if (PTR_ERR(wh) == -ENOSPC && + ext4_should_retry_alloc(ent->dir->i_sb, &retries)) + goto retry; + } else { + *h = handle; + init_special_inode(wh, wh->i_mode, WHITEOUT_DEV); + wh->i_op = &ext4_special_inode_operations; + } + return wh; +} + /* * Anybody can rename anything with this: the permission checks are left to the * higher-level routines. @@ -3157,7 +3190,8 @@ static void ext4_update_dir_count(handle_t *handle, struct ext4_renament *ent) * This comes from rename(const char *oldpath, const char *newpath) */ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, - struct inode *new_dir, struct dentry *new_dentry) + struct inode *new_dir, struct dentry *new_dentry, + unsigned int flags) { handle_t *handle = NULL; struct ext4_renament old = { @@ -3172,6 +3206,9 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, }; int force_reread; int retval; + struct inode *whiteout = NULL; + int credits; + u8 old_file_type; dquot_initialize(old.dir); dquot_initialize(new.dir); @@ -3210,11 +3247,17 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, if (new.inode && !test_opt(new.dir->i_sb, NO_AUTO_DA_ALLOC)) ext4_alloc_da_blocks(old.inode); - handle = ext4_journal_start(old.dir, EXT4_HT_DIR, - (2 * EXT4_DATA_TRANS_BLOCKS(old.dir->i_sb) + - EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2)); - if (IS_ERR(handle)) - return PTR_ERR(handle); + credits = (2 * EXT4_DATA_TRANS_BLOCKS(old.dir->i_sb) + + EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2); + if (!(flags & RENAME_WHITEOUT)) { + handle = ext4_journal_start(old.dir, EXT4_HT_DIR, credits); + if (IS_ERR(handle)) + return PTR_ERR(handle); + } else { + whiteout = ext4_whiteout_for_rename(&old, credits, &handle); + if (IS_ERR(whiteout)) + return PTR_ERR(whiteout); + } if (IS_DIRSYNC(old.dir) || IS_DIRSYNC(new.dir)) ext4_handle_sync(handle); @@ -3242,13 +3285,26 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, */ force_reread = (new.dir->i_ino == old.dir->i_ino && ext4_test_inode_flag(new.dir, EXT4_INODE_INLINE_DATA)); + + old_file_type = old.de->file_type; + if (whiteout) { + /* + * Do this before adding a new entry, so the old entry is sure + * to be still pointing to the valid old entry. + */ + retval = ext4_setent(handle, &old, whiteout->i_ino, + EXT4_FT_CHRDEV); + if (retval) + goto end_rename; + ext4_mark_inode_dirty(handle, whiteout); + } if (!new.bh) { retval = ext4_add_entry(handle, new.dentry, old.inode); if (retval) goto end_rename; } else { retval = ext4_setent(handle, &new, - old.inode->i_ino, old.de->file_type); + old.inode->i_ino, old_file_type); if (retval) goto end_rename; } @@ -3263,10 +3319,12 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, old.inode->i_ctime = ext4_current_time(old.inode); ext4_mark_inode_dirty(handle, old.inode); - /* - * ok, that's it - */ - ext4_rename_delete(handle, &old, force_reread); + if (!whiteout) { + /* + * ok, that's it + */ + ext4_rename_delete(handle, &old, force_reread); + } if (new.inode) { ext4_dec_count(handle, new.inode); @@ -3302,6 +3360,12 @@ end_rename: brelse(old.dir_bh); brelse(old.bh); brelse(new.bh); + if (whiteout) { + if (retval) + drop_nlink(whiteout); + unlock_new_inode(whiteout); + iput(whiteout); + } if (handle) ext4_journal_stop(handle); return retval; @@ -3434,18 +3498,15 @@ static int ext4_rename2(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry, unsigned int flags) { - if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) + if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) return -EINVAL; if (flags & RENAME_EXCHANGE) { return ext4_cross_rename(old_dir, old_dentry, new_dir, new_dentry); } - /* - * Existence checking was done by the VFS, otherwise "RENAME_NOREPLACE" - * is equivalent to regular rename. - */ - return ext4_rename(old_dir, old_dentry, new_dir, new_dentry); + + return ext4_rename(old_dir, old_dentry, new_dir, new_dentry, flags); } /* diff --git a/fs/internal.h b/fs/internal.h index 9477f8f6aefc..757ba2abf21e 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -47,7 +47,6 @@ extern void __init chrdev_init(void); /* * namei.c */ -extern int __inode_permission(struct inode *, int); extern int user_path_mountpoint_at(int, const char __user *, unsigned int, struct path *); extern int vfs_path_lookup(struct dentry *, struct vfsmount *, const char *, unsigned int, struct path *); @@ -139,12 +138,6 @@ extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan, extern int rw_verify_area(int, struct file *, const loff_t *, size_t); /* - * splice.c - */ -extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, - loff_t *opos, size_t len, unsigned int flags); - -/* * pipe.c */ extern const struct file_operations pipefifo_fops; diff --git a/fs/namei.c b/fs/namei.c index 43927d14db67..42df664e95e5 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -416,6 +416,7 @@ int __inode_permission(struct inode *inode, int mask) return security_inode_permission(inode, mask); } +EXPORT_SYMBOL(__inode_permission); /** * sb_permission - Check superblock-level permissions @@ -2383,22 +2384,17 @@ kern_path_mountpoint(int dfd, const char *name, struct path *path, } EXPORT_SYMBOL(kern_path_mountpoint); -/* - * It's inline, so penalty for filesystems that don't use sticky bit is - * minimal. - */ -static inline int check_sticky(struct inode *dir, struct inode *inode) +int __check_sticky(struct inode *dir, struct inode *inode) { kuid_t fsuid = current_fsuid(); - if (!(dir->i_mode & S_ISVTX)) - return 0; if (uid_eq(inode->i_uid, fsuid)) return 0; if (uid_eq(dir->i_uid, fsuid)) return 0; return !capable_wrt_inode_uidgid(inode, CAP_FOWNER); } +EXPORT_SYMBOL(__check_sticky); /* * Check whether we can remove a link victim from directory dir, check @@ -3064,9 +3060,12 @@ finish_open_created: error = may_open(&nd->path, acc_mode, open_flag); if (error) goto out; - file->f_path.mnt = nd->path.mnt; - error = finish_open(file, nd->path.dentry, NULL, opened); - if (error) { + + BUG_ON(*opened & FILE_OPENED); /* once it's opened, it's opened */ + error = vfs_open(&nd->path, file, current_cred()); + if (!error) { + *opened |= FILE_OPENED; + } else { if (error == -EOPENSTALE) goto stale_open; goto out; @@ -4210,12 +4209,16 @@ SYSCALL_DEFINE5(renameat2, int, olddfd, const char __user *, oldname, bool should_retry = false; int error; - if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) + if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) return -EINVAL; - if ((flags & RENAME_NOREPLACE) && (flags & RENAME_EXCHANGE)) + if ((flags & (RENAME_NOREPLACE | RENAME_WHITEOUT)) && + (flags & RENAME_EXCHANGE)) return -EINVAL; + if ((flags & RENAME_WHITEOUT) && !capable(CAP_MKNOD)) + return -EPERM; + retry: from = user_path_parent(olddfd, oldname, &oldnd, lookup_flags); if (IS_ERR(from)) { @@ -4347,6 +4350,20 @@ SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newna return sys_renameat2(AT_FDCWD, oldname, AT_FDCWD, newname, 0); } +int vfs_whiteout(struct inode *dir, struct dentry *dentry) +{ + int error = may_create(dir, dentry); + if (error) + return error; + + if (!dir->i_op->mknod) + return -EPERM; + + return dir->i_op->mknod(dir, dentry, + S_IFCHR | WHITEOUT_MODE, WHITEOUT_DEV); +} +EXPORT_SYMBOL(vfs_whiteout); + int readlink_copy(char __user *buffer, int buflen, const char *link) { int len = PTR_ERR(link); diff --git a/fs/namespace.c b/fs/namespace.c index fbba8b17330d..5b66b2b3624d 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1686,6 +1686,33 @@ void drop_collected_mounts(struct vfsmount *mnt) namespace_unlock(); } +/** + * clone_private_mount - create a private clone of a path + * + * This creates a new vfsmount, which will be the clone of @path. The new will + * not be attached anywhere in the namespace and will be private (i.e. changes + * to the originating mount won't be propagated into this). + * + * Release with mntput(). + */ +struct vfsmount *clone_private_mount(struct path *path) +{ + struct mount *old_mnt = real_mount(path->mnt); + struct mount *new_mnt; + + if (IS_MNT_UNBINDABLE(old_mnt)) + return ERR_PTR(-EINVAL); + + down_read(&namespace_sem); + new_mnt = clone_mnt(old_mnt, path->dentry, CL_PRIVATE); + up_read(&namespace_sem); + if (IS_ERR(new_mnt)) + return ERR_CAST(new_mnt); + + return &new_mnt->mnt; +} +EXPORT_SYMBOL_GPL(clone_private_mount); + int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg, struct vfsmount *root) { diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index cdeb3cfd6f32..0beb023f25ac 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1272,7 +1272,8 @@ static bool need_wrongsec_check(struct svc_rqst *rqstp) */ if (argp->opcnt == resp->opcnt) return false; - + if (next->opnum == OP_ILLEGAL) + return false; nextd = OPDESC(next); /* * Rest of 2.6.3.1.1: certain operations will return WRONGSEC @@ -1589,7 +1590,8 @@ static inline u32 nfsd4_rename_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op static inline u32 nfsd4_sequence_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) { - return NFS4_MAX_SESSIONID_LEN + 20; + return (op_encode_hdr_size + + XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) * sizeof(__be32); } static inline u32 nfsd4_setattr_rsize(struct svc_rqst *rqstp, struct nfsd4_op *op) @@ -1893,6 +1895,7 @@ static struct nfsd4_operation nfsd4_ops[] = { .op_func = (nfsd4op_func)nfsd4_sequence, .op_flags = ALLOWED_WITHOUT_FH | ALLOWED_AS_FIRST_OP, .op_name = "OP_SEQUENCE", + .op_rsize_bop = (nfsd4op_rsize)nfsd4_sequence_rsize, }, [OP_DESTROY_CLIENTID] = { .op_func = (nfsd4op_func)nfsd4_destroy_clientid, diff --git a/fs/open.c b/fs/open.c index d6fd3acde134..de92c13b58be 100644 --- a/fs/open.c +++ b/fs/open.c @@ -823,8 +823,7 @@ struct file *dentry_open(const struct path *path, int flags, f = get_empty_filp(); if (!IS_ERR(f)) { f->f_flags = flags; - f->f_path = *path; - error = do_dentry_open(f, NULL, cred); + error = vfs_open(path, f, cred); if (!error) { /* from now on we need fput() to dispose of f */ error = open_check_o_direct(f); @@ -841,6 +840,26 @@ struct file *dentry_open(const struct path *path, int flags, } EXPORT_SYMBOL(dentry_open); +/** + * vfs_open - open the file at the given path + * @path: path to open + * @filp: newly allocated file with f_flag initialized + * @cred: credentials to use + */ +int vfs_open(const struct path *path, struct file *filp, + const struct cred *cred) +{ + struct inode *inode = path->dentry->d_inode; + + if (inode->i_op->dentry_open) + return inode->i_op->dentry_open(path->dentry, filp, cred); + else { + filp->f_path = *path; + return do_dentry_open(filp, NULL, cred); + } +} +EXPORT_SYMBOL(vfs_open); + static inline int build_open_flags(int flags, umode_t mode, struct open_flags *op) { int lookup_flags = 0; diff --git a/fs/overlayfs/Kconfig b/fs/overlayfs/Kconfig new file mode 100644 index 000000000000..e60125976873 --- /dev/null +++ b/fs/overlayfs/Kconfig @@ -0,0 +1,10 @@ +config OVERLAYFS_FS + tristate "Overlay filesystem support" + help + An overlay filesystem combines two filesystems - an 'upper' filesystem + and a 'lower' filesystem. When a name exists in both filesystems, the + object in the 'upper' filesystem is visible while the object in the + 'lower' filesystem is either hidden or, in the case of directories, + merged with the 'upper' object. + + For more information see Documentation/filesystems/overlayfs.txt diff --git a/fs/overlayfs/Makefile b/fs/overlayfs/Makefile new file mode 100644 index 000000000000..8f91889480d0 --- /dev/null +++ b/fs/overlayfs/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the overlay filesystem. +# + +obj-$(CONFIG_OVERLAYFS_FS) += overlayfs.o + +overlayfs-objs := super.o inode.o dir.o readdir.o copy_up.o diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c new file mode 100644 index 000000000000..ea10a8719107 --- /dev/null +++ b/fs/overlayfs/copy_up.c @@ -0,0 +1,414 @@ +/* + * + * Copyright (C) 2011 Novell Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/fs.h> +#include <linux/slab.h> +#include <linux/file.h> +#include <linux/splice.h> +#include <linux/xattr.h> +#include <linux/security.h> +#include <linux/uaccess.h> +#include <linux/sched.h> +#include <linux/namei.h> +#include "overlayfs.h" + +#define OVL_COPY_UP_CHUNK_SIZE (1 << 20) + +int ovl_copy_xattr(struct dentry *old, struct dentry *new) +{ + ssize_t list_size, size; + char *buf, *name, *value; + int error; + + if (!old->d_inode->i_op->getxattr || + !new->d_inode->i_op->getxattr) + return 0; + + list_size = vfs_listxattr(old, NULL, 0); + if (list_size <= 0) { + if (list_size == -EOPNOTSUPP) + return 0; + return list_size; + } + + buf = kzalloc(list_size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + error = -ENOMEM; + value = kmalloc(XATTR_SIZE_MAX, GFP_KERNEL); + if (!value) + goto out; + + list_size = vfs_listxattr(old, buf, list_size); + if (list_size <= 0) { + error = list_size; + goto out_free_value; + } + + for (name = buf; name < (buf + list_size); name += strlen(name) + 1) { + size = vfs_getxattr(old, name, value, XATTR_SIZE_MAX); + if (size <= 0) { + error = size; + goto out_free_value; + } + error = vfs_setxattr(new, name, value, size, 0); + if (error) + goto out_free_value; + } + +out_free_value: + kfree(value); +out: + kfree(buf); + return error; +} + +static int ovl_copy_up_data(struct path *old, struct path *new, loff_t len) +{ + struct file *old_file; + struct file *new_file; + loff_t old_pos = 0; + loff_t new_pos = 0; + int error = 0; + + if (len == 0) + return 0; + + old_file = ovl_path_open(old, O_RDONLY); + if (IS_ERR(old_file)) + return PTR_ERR(old_file); + + new_file = ovl_path_open(new, O_WRONLY); + if (IS_ERR(new_file)) { + error = PTR_ERR(new_file); + goto out_fput; + } + + /* FIXME: copy up sparse files efficiently */ + while (len) { + size_t this_len = OVL_COPY_UP_CHUNK_SIZE; + long bytes; + + if (len < this_len) + this_len = len; + + if (signal_pending_state(TASK_KILLABLE, current)) { + error = -EINTR; + break; + } + + bytes = do_splice_direct(old_file, &old_pos, + new_file, &new_pos, + this_len, SPLICE_F_MOVE); + if (bytes <= 0) { + error = bytes; + break; + } + WARN_ON(old_pos != new_pos); + + len -= bytes; + } + + fput(new_file); +out_fput: + fput(old_file); + return error; +} + +static char *ovl_read_symlink(struct dentry *realdentry) +{ + int res; + char *buf; + struct inode *inode = realdentry->d_inode; + mm_segment_t old_fs; + + res = -EINVAL; + if (!inode->i_op->readlink) + goto err; + + res = -ENOMEM; + buf = (char *) __get_free_page(GFP_KERNEL); + if (!buf) + goto err; + + old_fs = get_fs(); + set_fs(get_ds()); + /* The cast to a user pointer is valid due to the set_fs() */ + res = inode->i_op->readlink(realdentry, + (char __user *)buf, PAGE_SIZE - 1); + set_fs(old_fs); + if (res < 0) { + free_page((unsigned long) buf); + goto err; + } + buf[res] = '\0'; + + return buf; + +err: + return ERR_PTR(res); +} + +static int ovl_set_timestamps(struct dentry *upperdentry, struct kstat *stat) +{ + struct iattr attr = { + .ia_valid = + ATTR_ATIME | ATTR_MTIME | ATTR_ATIME_SET | ATTR_MTIME_SET, + .ia_atime = stat->atime, + .ia_mtime = stat->mtime, + }; + + return notify_change(upperdentry, &attr, NULL); +} + +int ovl_set_attr(struct dentry *upperdentry, struct kstat *stat) +{ + int err = 0; + + if (!S_ISLNK(stat->mode)) { + struct iattr attr = { + .ia_valid = ATTR_MODE, + .ia_mode = stat->mode, + }; + err = notify_change(upperdentry, &attr, NULL); + } + if (!err) { + struct iattr attr = { + .ia_valid = ATTR_UID | ATTR_GID, + .ia_uid = stat->uid, + .ia_gid = stat->gid, + }; + err = notify_change(upperdentry, &attr, NULL); + } + if (!err) + ovl_set_timestamps(upperdentry, stat); + + return err; + +} + +static int ovl_copy_up_locked(struct dentry *workdir, struct dentry *upperdir, + struct dentry *dentry, struct path *lowerpath, + struct kstat *stat, struct iattr *attr, + const char *link) +{ + struct inode *wdir = workdir->d_inode; + struct inode *udir = upperdir->d_inode; + struct dentry *newdentry = NULL; + struct dentry *upper = NULL; + umode_t mode = stat->mode; + int err; + + newdentry = ovl_lookup_temp(workdir, dentry); + err = PTR_ERR(newdentry); + if (IS_ERR(newdentry)) + goto out; + + upper = lookup_one_len(dentry->d_name.name, upperdir, + dentry->d_name.len); + err = PTR_ERR(upper); + if (IS_ERR(upper)) + goto out1; + + /* Can't properly set mode on creation because of the umask */ + stat->mode &= S_IFMT; + err = ovl_create_real(wdir, newdentry, stat, link, NULL, true); + stat->mode = mode; + if (err) + goto out2; + + if (S_ISREG(stat->mode)) { + struct path upperpath; + ovl_path_upper(dentry, &upperpath); + BUG_ON(upperpath.dentry != NULL); + upperpath.dentry = newdentry; + + err = ovl_copy_up_data(lowerpath, &upperpath, stat->size); + if (err) + goto out_cleanup; + } + + err = ovl_copy_xattr(lowerpath->dentry, newdentry); + if (err) + goto out_cleanup; + + mutex_lock(&newdentry->d_inode->i_mutex); + err = ovl_set_attr(newdentry, stat); + if (!err && attr) + err = notify_change(newdentry, attr, NULL); + mutex_unlock(&newdentry->d_inode->i_mutex); + if (err) + goto out_cleanup; + + err = ovl_do_rename(wdir, newdentry, udir, upper, 0); + if (err) + goto out_cleanup; + + ovl_dentry_update(dentry, newdentry); + newdentry = NULL; + + /* + * Non-directores become opaque when copied up. + */ + if (!S_ISDIR(stat->mode)) + ovl_dentry_set_opaque(dentry, true); +out2: + dput(upper); +out1: + dput(newdentry); +out: + return err; + +out_cleanup: + ovl_cleanup(wdir, newdentry); + goto out; +} + +/* + * Copy up a single dentry + * + * Directory renames only allowed on "pure upper" (already created on + * upper filesystem, never copied up). Directories which are on lower or + * are merged may not be renamed. For these -EXDEV is returned and + * userspace has to deal with it. This means, when copying up a + * directory we can rely on it and ancestors being stable. + * + * Non-directory renames start with copy up of source if necessary. The + * actual rename will only proceed once the copy up was successful. Copy + * up uses upper parent i_mutex for exclusion. Since rename can change + * d_parent it is possible that the copy up will lock the old parent. At + * that point the file will have already been copied up anyway. + */ +int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry, + struct path *lowerpath, struct kstat *stat, + struct iattr *attr) +{ + struct dentry *workdir = ovl_workdir(dentry); + int err; + struct kstat pstat; + struct path parentpath; + struct dentry *upperdir; + struct dentry *upperdentry; + const struct cred *old_cred; + struct cred *override_cred; + char *link = NULL; + + ovl_path_upper(parent, &parentpath); + upperdir = parentpath.dentry; + + err = vfs_getattr(&parentpath, &pstat); + if (err) + return err; + + if (S_ISLNK(stat->mode)) { + link = ovl_read_symlink(lowerpath->dentry); + if (IS_ERR(link)) + return PTR_ERR(link); + } + + err = -ENOMEM; + override_cred = prepare_creds(); + if (!override_cred) + goto out_free_link; + + override_cred->fsuid = stat->uid; + override_cred->fsgid = stat->gid; + /* + * CAP_SYS_ADMIN for copying up extended attributes + * CAP_DAC_OVERRIDE for create + * CAP_FOWNER for chmod, timestamp update + * CAP_FSETID for chmod + * CAP_CHOWN for chown + * CAP_MKNOD for mknod + */ + cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN); + cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE); + cap_raise(override_cred->cap_effective, CAP_FOWNER); + cap_raise(override_cred->cap_effective, CAP_FSETID); + cap_raise(override_cred->cap_effective, CAP_CHOWN); + cap_raise(override_cred->cap_effective, CAP_MKNOD); + old_cred = override_creds(override_cred); + + err = -EIO; + if (lock_rename(workdir, upperdir) != NULL) { + pr_err("overlayfs: failed to lock workdir+upperdir\n"); + goto out_unlock; + } + upperdentry = ovl_dentry_upper(dentry); + if (upperdentry) { + unlock_rename(workdir, upperdir); + err = 0; + /* Raced with another copy-up? Do the setattr here */ + if (attr) { + mutex_lock(&upperdentry->d_inode->i_mutex); + err = notify_change(upperdentry, attr, NULL); + mutex_unlock(&upperdentry->d_inode->i_mutex); + } + goto out_put_cred; + } + + err = ovl_copy_up_locked(workdir, upperdir, dentry, lowerpath, + stat, attr, link); + if (!err) { + /* Restore timestamps on parent (best effort) */ + ovl_set_timestamps(upperdir, &pstat); + } +out_unlock: + unlock_rename(workdir, upperdir); +out_put_cred: + revert_creds(old_cred); + put_cred(override_cred); + +out_free_link: + if (link) + free_page((unsigned long) link); + + return err; +} + +int ovl_copy_up(struct dentry *dentry) +{ + int err; + + err = 0; + while (!err) { + struct dentry *next; + struct dentry *parent; + struct path lowerpath; + struct kstat stat; + enum ovl_path_type type = ovl_path_type(dentry); + + if (type != OVL_PATH_LOWER) + break; + + next = dget(dentry); + /* find the topmost dentry not yet copied up */ + for (;;) { + parent = dget_parent(next); + + type = ovl_path_type(parent); + if (type != OVL_PATH_LOWER) + break; + + dput(next); + next = parent; + } + + ovl_path_lower(next, &lowerpath); + err = vfs_getattr(&lowerpath, &stat); + if (!err) + err = ovl_copy_up_one(parent, next, &lowerpath, &stat, NULL); + + dput(parent); + dput(next); + } + + return err; +} diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c new file mode 100644 index 000000000000..15cd91ad9940 --- /dev/null +++ b/fs/overlayfs/dir.c @@ -0,0 +1,921 @@ +/* + * + * Copyright (C) 2011 Novell Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/fs.h> +#include <linux/namei.h> +#include <linux/xattr.h> +#include <linux/security.h> +#include <linux/cred.h> +#include "overlayfs.h" + +void ovl_cleanup(struct inode *wdir, struct dentry *wdentry) +{ + int err; + + dget(wdentry); + if (S_ISDIR(wdentry->d_inode->i_mode)) + err = ovl_do_rmdir(wdir, wdentry); + else + err = ovl_do_unlink(wdir, wdentry); + dput(wdentry); + + if (err) { + pr_err("overlayfs: cleanup of '%pd2' failed (%i)\n", + wdentry, err); + } +} + +struct dentry *ovl_lookup_temp(struct dentry *workdir, struct dentry *dentry) +{ + struct dentry *temp; + char name[20]; + + snprintf(name, sizeof(name), "#%lx", (unsigned long) dentry); + + temp = lookup_one_len(name, workdir, strlen(name)); + if (!IS_ERR(temp) && temp->d_inode) { + pr_err("overlayfs: workdir/%s already exists\n", name); + dput(temp); + temp = ERR_PTR(-EIO); + } + + return temp; +} + +/* caller holds i_mutex on workdir */ +static struct dentry *ovl_whiteout(struct dentry *workdir, + struct dentry *dentry) +{ + int err; + struct dentry *whiteout; + struct inode *wdir = workdir->d_inode; + + whiteout = ovl_lookup_temp(workdir, dentry); + if (IS_ERR(whiteout)) + return whiteout; + + err = ovl_do_whiteout(wdir, whiteout); + if (err) { + dput(whiteout); + whiteout = ERR_PTR(err); + } + + return whiteout; +} + +int ovl_create_real(struct inode *dir, struct dentry *newdentry, + struct kstat *stat, const char *link, + struct dentry *hardlink, bool debug) +{ + int err; + + if (newdentry->d_inode) + return -ESTALE; + + if (hardlink) { + err = ovl_do_link(hardlink, dir, newdentry, debug); + } else { + switch (stat->mode & S_IFMT) { + case S_IFREG: + err = ovl_do_create(dir, newdentry, stat->mode, debug); + break; + + case S_IFDIR: + err = ovl_do_mkdir(dir, newdentry, stat->mode, debug); + break; + + case S_IFCHR: + case S_IFBLK: + case S_IFIFO: + case S_IFSOCK: + err = ovl_do_mknod(dir, newdentry, + stat->mode, stat->rdev, debug); + break; + + case S_IFLNK: + err = ovl_do_symlink(dir, newdentry, link, debug); + break; + + default: + err = -EPERM; + } + } + if (!err && WARN_ON(!newdentry->d_inode)) { + /* + * Not quite sure if non-instantiated dentry is legal or not. + * VFS doesn't seem to care so check and warn here. + */ + err = -ENOENT; + } + return err; +} + +static int ovl_set_opaque(struct dentry *upperdentry) +{ + return ovl_do_setxattr(upperdentry, ovl_opaque_xattr, "y", 1, 0); +} + +static void ovl_remove_opaque(struct dentry *upperdentry) +{ + int err; + + err = ovl_do_removexattr(upperdentry, ovl_opaque_xattr); + if (err) { + pr_warn("overlayfs: failed to remove opaque from '%s' (%i)\n", + upperdentry->d_name.name, err); + } +} + +static int ovl_dir_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) +{ + int err; + enum ovl_path_type type; + struct path realpath; + + type = ovl_path_real(dentry, &realpath); + err = vfs_getattr(&realpath, stat); + if (err) + return err; + + stat->dev = dentry->d_sb->s_dev; + stat->ino = dentry->d_inode->i_ino; + + /* + * It's probably not worth it to count subdirs to get the + * correct link count. nlink=1 seems to pacify 'find' and + * other utilities. + */ + if (type == OVL_PATH_MERGE) + stat->nlink = 1; + + return 0; +} + +static int ovl_create_upper(struct dentry *dentry, struct inode *inode, + struct kstat *stat, const char *link, + struct dentry *hardlink) +{ + struct dentry *upperdir = ovl_dentry_upper(dentry->d_parent); + struct inode *udir = upperdir->d_inode; + struct dentry *newdentry; + int err; + + mutex_lock_nested(&udir->i_mutex, I_MUTEX_PARENT); + newdentry = lookup_one_len(dentry->d_name.name, upperdir, + dentry->d_name.len); + err = PTR_ERR(newdentry); + if (IS_ERR(newdentry)) + goto out_unlock; + err = ovl_create_real(udir, newdentry, stat, link, hardlink, false); + if (err) + goto out_dput; + + ovl_dentry_version_inc(dentry->d_parent); + ovl_dentry_update(dentry, newdentry); + ovl_copyattr(newdentry->d_inode, inode); + d_instantiate(dentry, inode); + newdentry = NULL; +out_dput: + dput(newdentry); +out_unlock: + mutex_unlock(&udir->i_mutex); + return err; +} + +static int ovl_lock_rename_workdir(struct dentry *workdir, + struct dentry *upperdir) +{ + /* Workdir should not be the same as upperdir */ + if (workdir == upperdir) + goto err; + + /* Workdir should not be subdir of upperdir and vice versa */ + if (lock_rename(workdir, upperdir) != NULL) + goto err_unlock; + + return 0; + +err_unlock: + unlock_rename(workdir, upperdir); +err: + pr_err("overlayfs: failed to lock workdir+upperdir\n"); + return -EIO; +} + +static struct dentry *ovl_clear_empty(struct dentry *dentry, + struct list_head *list) +{ + struct dentry *workdir = ovl_workdir(dentry); + struct inode *wdir = workdir->d_inode; + struct dentry *upperdir = ovl_dentry_upper(dentry->d_parent); + struct inode *udir = upperdir->d_inode; + struct path upperpath; + struct dentry *upper; + struct dentry *opaquedir; + struct kstat stat; + int err; + + err = ovl_lock_rename_workdir(workdir, upperdir); + if (err) + goto out; + + ovl_path_upper(dentry, &upperpath); + err = vfs_getattr(&upperpath, &stat); + if (err) + goto out_unlock; + + err = -ESTALE; + if (!S_ISDIR(stat.mode)) + goto out_unlock; + upper = upperpath.dentry; + if (upper->d_parent->d_inode != udir) + goto out_unlock; + + opaquedir = ovl_lookup_temp(workdir, dentry); + err = PTR_ERR(opaquedir); + if (IS_ERR(opaquedir)) + goto out_unlock; + + err = ovl_create_real(wdir, opaquedir, &stat, NULL, NULL, true); + if (err) + goto out_dput; + + err = ovl_copy_xattr(upper, opaquedir); + if (err) + goto out_cleanup; + + err = ovl_set_opaque(opaquedir); + if (err) + goto out_cleanup; + + mutex_lock(&opaquedir->d_inode->i_mutex); + err = ovl_set_attr(opaquedir, &stat); + mutex_unlock(&opaquedir->d_inode->i_mutex); + if (err) + goto out_cleanup; + + err = ovl_do_rename(wdir, opaquedir, udir, upper, RENAME_EXCHANGE); + if (err) + goto out_cleanup; + + ovl_cleanup_whiteouts(upper, list); + ovl_cleanup(wdir, upper); + unlock_rename(workdir, upperdir); + + /* dentry's upper doesn't match now, get rid of it */ + d_drop(dentry); + + return opaquedir; + +out_cleanup: + ovl_cleanup(wdir, opaquedir); +out_dput: + dput(opaquedir); +out_unlock: + unlock_rename(workdir, upperdir); +out: + return ERR_PTR(err); +} + +static struct dentry *ovl_check_empty_and_clear(struct dentry *dentry, + enum ovl_path_type type) +{ + int err; + struct dentry *ret = NULL; + LIST_HEAD(list); + + err = ovl_check_empty_dir(dentry, &list); + if (err) + ret = ERR_PTR(err); + else if (type == OVL_PATH_MERGE) + ret = ovl_clear_empty(dentry, &list); + + ovl_cache_free(&list); + + return ret; +} + +static int ovl_create_over_whiteout(struct dentry *dentry, struct inode *inode, + struct kstat *stat, const char *link, + struct dentry *hardlink) +{ + struct dentry *workdir = ovl_workdir(dentry); + struct inode *wdir = workdir->d_inode; + struct dentry *upperdir = ovl_dentry_upper(dentry->d_parent); + struct inode *udir = upperdir->d_inode; + struct dentry *upper; + struct dentry *newdentry; + int err; + + err = ovl_lock_rename_workdir(workdir, upperdir); + if (err) + goto out; + + newdentry = ovl_lookup_temp(workdir, dentry); + err = PTR_ERR(newdentry); + if (IS_ERR(newdentry)) + goto out_unlock; + + upper = lookup_one_len(dentry->d_name.name, upperdir, + dentry->d_name.len); + err = PTR_ERR(upper); + if (IS_ERR(upper)) + goto out_dput; + + err = ovl_create_real(wdir, newdentry, stat, link, hardlink, true); + if (err) + goto out_dput2; + + if (S_ISDIR(stat->mode)) { + err = ovl_set_opaque(newdentry); + if (err) + goto out_cleanup; + + err = ovl_do_rename(wdir, newdentry, udir, upper, + RENAME_EXCHANGE); + if (err) + goto out_cleanup; + + ovl_cleanup(wdir, upper); + } else { + err = ovl_do_rename(wdir, newdentry, udir, upper, 0); + if (err) + goto out_cleanup; + } + ovl_dentry_version_inc(dentry->d_parent); + ovl_dentry_update(dentry, newdentry); + ovl_copyattr(newdentry->d_inode, inode); + d_instantiate(dentry, inode); + newdentry = NULL; +out_dput2: + dput(upper); +out_dput: + dput(newdentry); +out_unlock: + unlock_rename(workdir, upperdir); +out: + return err; + +out_cleanup: + ovl_cleanup(wdir, newdentry); + goto out_dput2; +} + +static int ovl_create_or_link(struct dentry *dentry, int mode, dev_t rdev, + const char *link, struct dentry *hardlink) +{ + int err; + struct inode *inode; + struct kstat stat = { + .mode = mode, + .rdev = rdev, + }; + + err = -ENOMEM; + inode = ovl_new_inode(dentry->d_sb, mode, dentry->d_fsdata); + if (!inode) + goto out; + + err = ovl_copy_up(dentry->d_parent); + if (err) + goto out_iput; + + if (!ovl_dentry_is_opaque(dentry)) { + err = ovl_create_upper(dentry, inode, &stat, link, hardlink); + } else { + const struct cred *old_cred; + struct cred *override_cred; + + err = -ENOMEM; + override_cred = prepare_creds(); + if (!override_cred) + goto out_iput; + + /* + * CAP_SYS_ADMIN for setting opaque xattr + * CAP_DAC_OVERRIDE for create in workdir, rename + * CAP_FOWNER for removing whiteout from sticky dir + */ + cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN); + cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE); + cap_raise(override_cred->cap_effective, CAP_FOWNER); + old_cred = override_creds(override_cred); + + err = ovl_create_over_whiteout(dentry, inode, &stat, link, + hardlink); + + revert_creds(old_cred); + put_cred(override_cred); + } + + if (!err) + inode = NULL; +out_iput: + iput(inode); +out: + return err; +} + +static int ovl_create_object(struct dentry *dentry, int mode, dev_t rdev, + const char *link) +{ + int err; + + err = ovl_want_write(dentry); + if (!err) { + err = ovl_create_or_link(dentry, mode, rdev, link, NULL); + ovl_drop_write(dentry); + } + + return err; +} + +static int ovl_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool excl) +{ + return ovl_create_object(dentry, (mode & 07777) | S_IFREG, 0, NULL); +} + +static int ovl_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + return ovl_create_object(dentry, (mode & 07777) | S_IFDIR, 0, NULL); +} + +static int ovl_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, + dev_t rdev) +{ + /* Don't allow creation of "whiteout" on overlay */ + if (S_ISCHR(mode) && rdev == WHITEOUT_DEV) + return -EPERM; + + return ovl_create_object(dentry, mode, rdev, NULL); +} + +static int ovl_symlink(struct inode *dir, struct dentry *dentry, + const char *link) +{ + return ovl_create_object(dentry, S_IFLNK, 0, link); +} + +static int ovl_link(struct dentry *old, struct inode *newdir, + struct dentry *new) +{ + int err; + struct dentry *upper; + + err = ovl_want_write(old); + if (err) + goto out; + + err = ovl_copy_up(old); + if (err) + goto out_drop_write; + + upper = ovl_dentry_upper(old); + err = ovl_create_or_link(new, upper->d_inode->i_mode, 0, NULL, upper); + +out_drop_write: + ovl_drop_write(old); +out: + return err; +} + +static int ovl_remove_and_whiteout(struct dentry *dentry, + enum ovl_path_type type, bool is_dir) +{ + struct dentry *workdir = ovl_workdir(dentry); + struct inode *wdir = workdir->d_inode; + struct dentry *upperdir = ovl_dentry_upper(dentry->d_parent); + struct inode *udir = upperdir->d_inode; + struct dentry *whiteout; + struct dentry *upper; + struct dentry *opaquedir = NULL; + int err; + + if (is_dir) { + opaquedir = ovl_check_empty_and_clear(dentry, type); + err = PTR_ERR(opaquedir); + if (IS_ERR(opaquedir)) + goto out; + } + + err = ovl_lock_rename_workdir(workdir, upperdir); + if (err) + goto out_dput; + + whiteout = ovl_whiteout(workdir, dentry); + err = PTR_ERR(whiteout); + if (IS_ERR(whiteout)) + goto out_unlock; + + if (type == OVL_PATH_LOWER) { + upper = lookup_one_len(dentry->d_name.name, upperdir, + dentry->d_name.len); + err = PTR_ERR(upper); + if (IS_ERR(upper)) + goto kill_whiteout; + + err = ovl_do_rename(wdir, whiteout, udir, upper, 0); + dput(upper); + if (err) + goto kill_whiteout; + } else { + int flags = 0; + + upper = ovl_dentry_upper(dentry); + if (opaquedir) + upper = opaquedir; + err = -ESTALE; + if (upper->d_parent != upperdir) + goto kill_whiteout; + + if (is_dir) + flags |= RENAME_EXCHANGE; + + err = ovl_do_rename(wdir, whiteout, udir, upper, flags); + if (err) + goto kill_whiteout; + + if (is_dir) + ovl_cleanup(wdir, upper); + } + ovl_dentry_version_inc(dentry->d_parent); +out_d_drop: + d_drop(dentry); + dput(whiteout); +out_unlock: + unlock_rename(workdir, upperdir); +out_dput: + dput(opaquedir); +out: + return err; + +kill_whiteout: + ovl_cleanup(wdir, whiteout); + goto out_d_drop; +} + +static int ovl_remove_upper(struct dentry *dentry, bool is_dir) +{ + struct dentry *upperdir = ovl_dentry_upper(dentry->d_parent); + struct inode *dir = upperdir->d_inode; + struct dentry *upper = ovl_dentry_upper(dentry); + int err; + + mutex_lock_nested(&dir->i_mutex, I_MUTEX_PARENT); + err = -ESTALE; + if (upper->d_parent == upperdir) { + /* Don't let d_delete() think it can reset d_inode */ + dget(upper); + if (is_dir) + err = vfs_rmdir(dir, upper); + else + err = vfs_unlink(dir, upper, NULL); + dput(upper); + ovl_dentry_version_inc(dentry->d_parent); + } + + /* + * Keeping this dentry hashed would mean having to release + * upperpath/lowerpath, which could only be done if we are the + * sole user of this dentry. Too tricky... Just unhash for + * now. + */ + d_drop(dentry); + mutex_unlock(&dir->i_mutex); + + return err; +} + +static inline int ovl_check_sticky(struct dentry *dentry) +{ + struct inode *dir = ovl_dentry_real(dentry->d_parent)->d_inode; + struct inode *inode = ovl_dentry_real(dentry)->d_inode; + + if (check_sticky(dir, inode)) + return -EPERM; + + return 0; +} + +static int ovl_do_remove(struct dentry *dentry, bool is_dir) +{ + enum ovl_path_type type; + int err; + + err = ovl_check_sticky(dentry); + if (err) + goto out; + + err = ovl_want_write(dentry); + if (err) + goto out; + + err = ovl_copy_up(dentry->d_parent); + if (err) + goto out_drop_write; + + type = ovl_path_type(dentry); + if (type == OVL_PATH_PURE_UPPER) { + err = ovl_remove_upper(dentry, is_dir); + } else { + const struct cred *old_cred; + struct cred *override_cred; + + err = -ENOMEM; + override_cred = prepare_creds(); + if (!override_cred) + goto out_drop_write; + + /* + * CAP_SYS_ADMIN for setting xattr on whiteout, opaque dir + * CAP_DAC_OVERRIDE for create in workdir, rename + * CAP_FOWNER for removing whiteout from sticky dir + * CAP_FSETID for chmod of opaque dir + * CAP_CHOWN for chown of opaque dir + */ + cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN); + cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE); + cap_raise(override_cred->cap_effective, CAP_FOWNER); + cap_raise(override_cred->cap_effective, CAP_FSETID); + cap_raise(override_cred->cap_effective, CAP_CHOWN); + old_cred = override_creds(override_cred); + + err = ovl_remove_and_whiteout(dentry, type, is_dir); + + revert_creds(old_cred); + put_cred(override_cred); + } +out_drop_write: + ovl_drop_write(dentry); +out: + return err; +} + +static int ovl_unlink(struct inode *dir, struct dentry *dentry) +{ + return ovl_do_remove(dentry, false); +} + +static int ovl_rmdir(struct inode *dir, struct dentry *dentry) +{ + return ovl_do_remove(dentry, true); +} + +static int ovl_rename2(struct inode *olddir, struct dentry *old, + struct inode *newdir, struct dentry *new, + unsigned int flags) +{ + int err; + enum ovl_path_type old_type; + enum ovl_path_type new_type; + struct dentry *old_upperdir; + struct dentry *new_upperdir; + struct dentry *olddentry; + struct dentry *newdentry; + struct dentry *trap; + bool old_opaque; + bool new_opaque; + bool new_create = false; + bool cleanup_whiteout = false; + bool overwrite = !(flags & RENAME_EXCHANGE); + bool is_dir = S_ISDIR(old->d_inode->i_mode); + bool new_is_dir = false; + struct dentry *opaquedir = NULL; + const struct cred *old_cred = NULL; + struct cred *override_cred = NULL; + + err = -EINVAL; + if (flags & ~(RENAME_EXCHANGE | RENAME_NOREPLACE)) + goto out; + + flags &= ~RENAME_NOREPLACE; + + err = ovl_check_sticky(old); + if (err) + goto out; + + /* Don't copy up directory trees */ + old_type = ovl_path_type(old); + err = -EXDEV; + if ((old_type == OVL_PATH_LOWER || old_type == OVL_PATH_MERGE) && is_dir) + goto out; + + if (new->d_inode) { + err = ovl_check_sticky(new); + if (err) + goto out; + + if (S_ISDIR(new->d_inode->i_mode)) + new_is_dir = true; + + new_type = ovl_path_type(new); + err = -EXDEV; + if (!overwrite && (new_type == OVL_PATH_LOWER || new_type == OVL_PATH_MERGE) && new_is_dir) + goto out; + + err = 0; + if (new_type == OVL_PATH_LOWER && old_type == OVL_PATH_LOWER) { + if (ovl_dentry_lower(old)->d_inode == + ovl_dentry_lower(new)->d_inode) + goto out; + } + if (new_type != OVL_PATH_LOWER && old_type != OVL_PATH_LOWER) { + if (ovl_dentry_upper(old)->d_inode == + ovl_dentry_upper(new)->d_inode) + goto out; + } + } else { + if (ovl_dentry_is_opaque(new)) + new_type = OVL_PATH_UPPER; + else + new_type = OVL_PATH_PURE_UPPER; + } + + err = ovl_want_write(old); + if (err) + goto out; + + err = ovl_copy_up(old); + if (err) + goto out_drop_write; + + err = ovl_copy_up(new->d_parent); + if (err) + goto out_drop_write; + if (!overwrite) { + err = ovl_copy_up(new); + if (err) + goto out_drop_write; + } + + old_opaque = old_type != OVL_PATH_PURE_UPPER; + new_opaque = new_type != OVL_PATH_PURE_UPPER; + + if (old_opaque || new_opaque) { + err = -ENOMEM; + override_cred = prepare_creds(); + if (!override_cred) + goto out_drop_write; + + /* + * CAP_SYS_ADMIN for setting xattr on whiteout, opaque dir + * CAP_DAC_OVERRIDE for create in workdir + * CAP_FOWNER for removing whiteout from sticky dir + * CAP_FSETID for chmod of opaque dir + * CAP_CHOWN for chown of opaque dir + */ + cap_raise(override_cred->cap_effective, CAP_SYS_ADMIN); + cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE); + cap_raise(override_cred->cap_effective, CAP_FOWNER); + cap_raise(override_cred->cap_effective, CAP_FSETID); + cap_raise(override_cred->cap_effective, CAP_CHOWN); + old_cred = override_creds(override_cred); + } + + if (overwrite && (new_type == OVL_PATH_LOWER || new_type == OVL_PATH_MERGE) && new_is_dir) { + opaquedir = ovl_check_empty_and_clear(new, new_type); + err = PTR_ERR(opaquedir); + if (IS_ERR(opaquedir)) { + opaquedir = NULL; + goto out_revert_creds; + } + } + + if (overwrite) { + if (old_opaque) { + if (new->d_inode || !new_opaque) { + /* Whiteout source */ + flags |= RENAME_WHITEOUT; + } else { + /* Switch whiteouts */ + flags |= RENAME_EXCHANGE; + } + } else if (is_dir && !new->d_inode && new_opaque) { + flags |= RENAME_EXCHANGE; + cleanup_whiteout = true; + } + } + + old_upperdir = ovl_dentry_upper(old->d_parent); + new_upperdir = ovl_dentry_upper(new->d_parent); + + trap = lock_rename(new_upperdir, old_upperdir); + + olddentry = ovl_dentry_upper(old); + newdentry = ovl_dentry_upper(new); + if (newdentry) { + if (opaquedir) { + newdentry = opaquedir; + opaquedir = NULL; + } else { + dget(newdentry); + } + } else { + new_create = true; + newdentry = lookup_one_len(new->d_name.name, new_upperdir, + new->d_name.len); + err = PTR_ERR(newdentry); + if (IS_ERR(newdentry)) + goto out_unlock; + } + + err = -ESTALE; + if (olddentry->d_parent != old_upperdir) + goto out_dput; + if (newdentry->d_parent != new_upperdir) + goto out_dput; + if (olddentry == trap) + goto out_dput; + if (newdentry == trap) + goto out_dput; + + if (is_dir && !old_opaque && new_opaque) { + err = ovl_set_opaque(olddentry); + if (err) + goto out_dput; + } + if (!overwrite && new_is_dir && old_opaque && !new_opaque) { + err = ovl_set_opaque(newdentry); + if (err) + goto out_dput; + } + + if (old_opaque || new_opaque) { + err = ovl_do_rename(old_upperdir->d_inode, olddentry, + new_upperdir->d_inode, newdentry, + flags); + } else { + /* No debug for the plain case */ + BUG_ON(flags & ~RENAME_EXCHANGE); + err = vfs_rename(old_upperdir->d_inode, olddentry, + new_upperdir->d_inode, newdentry, + NULL, flags); + } + + if (err) { + if (is_dir && !old_opaque && new_opaque) + ovl_remove_opaque(olddentry); + if (!overwrite && new_is_dir && old_opaque && !new_opaque) + ovl_remove_opaque(newdentry); + goto out_dput; + } + + if (is_dir && old_opaque && !new_opaque) + ovl_remove_opaque(olddentry); + if (!overwrite && new_is_dir && !old_opaque && new_opaque) + ovl_remove_opaque(newdentry); + + if (old_opaque != new_opaque) { + ovl_dentry_set_opaque(old, new_opaque); + if (!overwrite) + ovl_dentry_set_opaque(new, old_opaque); + } + + if (cleanup_whiteout) + ovl_cleanup(old_upperdir->d_inode, newdentry); + + ovl_dentry_version_inc(old->d_parent); + ovl_dentry_version_inc(new->d_parent); + +out_dput: + dput(newdentry); +out_unlock: + unlock_rename(new_upperdir, old_upperdir); +out_revert_creds: + if (old_opaque || new_opaque) { + revert_creds(old_cred); + put_cred(override_cred); + } +out_drop_write: + ovl_drop_write(old); +out: + dput(opaquedir); + return err; +} + +const struct inode_operations ovl_dir_inode_operations = { + .lookup = ovl_lookup, + .mkdir = ovl_mkdir, + .symlink = ovl_symlink, + .unlink = ovl_unlink, + .rmdir = ovl_rmdir, + .rename2 = ovl_rename2, + .link = ovl_link, + .setattr = ovl_setattr, + .create = ovl_create, + .mknod = ovl_mknod, + .permission = ovl_permission, + .getattr = ovl_dir_getattr, + .setxattr = ovl_setxattr, + .getxattr = ovl_getxattr, + .listxattr = ovl_listxattr, + .removexattr = ovl_removexattr, +}; diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c new file mode 100644 index 000000000000..af2d18c9fcee --- /dev/null +++ b/fs/overlayfs/inode.c @@ -0,0 +1,425 @@ +/* + * + * Copyright (C) 2011 Novell Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/fs.h> +#include <linux/slab.h> +#include <linux/xattr.h> +#include "overlayfs.h" + +static int ovl_copy_up_last(struct dentry *dentry, struct iattr *attr, + bool no_data) +{ + int err; + struct dentry *parent; + struct kstat stat; + struct path lowerpath; + + parent = dget_parent(dentry); + err = ovl_copy_up(parent); + if (err) + goto out_dput_parent; + + ovl_path_lower(dentry, &lowerpath); + err = vfs_getattr(&lowerpath, &stat); + if (err) + goto out_dput_parent; + + if (no_data) + stat.size = 0; + + err = ovl_copy_up_one(parent, dentry, &lowerpath, &stat, attr); + +out_dput_parent: + dput(parent); + return err; +} + +int ovl_setattr(struct dentry *dentry, struct iattr *attr) +{ + int err; + struct dentry *upperdentry; + + err = ovl_want_write(dentry); + if (err) + goto out; + + upperdentry = ovl_dentry_upper(dentry); + if (upperdentry) { + mutex_lock(&upperdentry->d_inode->i_mutex); + err = notify_change(upperdentry, attr, NULL); + mutex_unlock(&upperdentry->d_inode->i_mutex); + } else { + err = ovl_copy_up_last(dentry, attr, false); + } + ovl_drop_write(dentry); +out: + return err; +} + +static int ovl_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) +{ + struct path realpath; + + ovl_path_real(dentry, &realpath); + return vfs_getattr(&realpath, stat); +} + +int ovl_permission(struct inode *inode, int mask) +{ + struct ovl_entry *oe; + struct dentry *alias = NULL; + struct inode *realinode; + struct dentry *realdentry; + bool is_upper; + int err; + + if (S_ISDIR(inode->i_mode)) { + oe = inode->i_private; + } else if (mask & MAY_NOT_BLOCK) { + return -ECHILD; + } else { + /* + * For non-directories find an alias and get the info + * from there. + */ + alias = d_find_any_alias(inode); + if (WARN_ON(!alias)) + return -ENOENT; + + oe = alias->d_fsdata; + } + + realdentry = ovl_entry_real(oe, &is_upper); + + /* Careful in RCU walk mode */ + realinode = ACCESS_ONCE(realdentry->d_inode); + if (!realinode) { + WARN_ON(!(mask & MAY_NOT_BLOCK)); + err = -ENOENT; + goto out_dput; + } + + if (mask & MAY_WRITE) { + umode_t mode = realinode->i_mode; + + /* + * Writes will always be redirected to upper layer, so + * ignore lower layer being read-only. + * + * If the overlay itself is read-only then proceed + * with the permission check, don't return EROFS. + * This will only happen if this is the lower layer of + * another overlayfs. + * + * If upper fs becomes read-only after the overlay was + * constructed return EROFS to prevent modification of + * upper layer. + */ + err = -EROFS; + if (is_upper && !IS_RDONLY(inode) && IS_RDONLY(realinode) && + (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode))) + goto out_dput; + } + + err = __inode_permission(realinode, mask); +out_dput: + dput(alias); + return err; +} + + +struct ovl_link_data { + struct dentry *realdentry; + void *cookie; +}; + +static void *ovl_follow_link(struct dentry *dentry, struct nameidata *nd) +{ + void *ret; + struct dentry *realdentry; + struct inode *realinode; + + realdentry = ovl_dentry_real(dentry); + realinode = realdentry->d_inode; + + if (WARN_ON(!realinode->i_op->follow_link)) + return ERR_PTR(-EPERM); + + ret = realinode->i_op->follow_link(realdentry, nd); + if (IS_ERR(ret)) + return ret; + + if (realinode->i_op->put_link) { + struct ovl_link_data *data; + + data = kmalloc(sizeof(struct ovl_link_data), GFP_KERNEL); + if (!data) { + realinode->i_op->put_link(realdentry, nd, ret); + return ERR_PTR(-ENOMEM); + } + data->realdentry = realdentry; + data->cookie = ret; + + return data; + } else { + return NULL; + } +} + +static void ovl_put_link(struct dentry *dentry, struct nameidata *nd, void *c) +{ + struct inode *realinode; + struct ovl_link_data *data = c; + + if (!data) + return; + + realinode = data->realdentry->d_inode; + realinode->i_op->put_link(data->realdentry, nd, data->cookie); + kfree(data); +} + +static int ovl_readlink(struct dentry *dentry, char __user *buf, int bufsiz) +{ + struct path realpath; + struct inode *realinode; + + ovl_path_real(dentry, &realpath); + realinode = realpath.dentry->d_inode; + + if (!realinode->i_op->readlink) + return -EINVAL; + + touch_atime(&realpath); + + return realinode->i_op->readlink(realpath.dentry, buf, bufsiz); +} + + +static bool ovl_is_private_xattr(const char *name) +{ + return strncmp(name, "trusted.overlay.", 14) == 0; +} + +int ovl_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + int err; + struct dentry *upperdentry; + + err = ovl_want_write(dentry); + if (err) + goto out; + + err = -EPERM; + if (ovl_is_private_xattr(name)) + goto out_drop_write; + + err = ovl_copy_up(dentry); + if (err) + goto out_drop_write; + + upperdentry = ovl_dentry_upper(dentry); + err = vfs_setxattr(upperdentry, name, value, size, flags); + +out_drop_write: + ovl_drop_write(dentry); +out: + return err; +} + +ssize_t ovl_getxattr(struct dentry *dentry, const char *name, + void *value, size_t size) +{ + if (ovl_path_type(dentry->d_parent) == OVL_PATH_MERGE && + ovl_is_private_xattr(name)) + return -ENODATA; + + return vfs_getxattr(ovl_dentry_real(dentry), name, value, size); +} + +ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size) +{ + ssize_t res; + int off; + + res = vfs_listxattr(ovl_dentry_real(dentry), list, size); + if (res <= 0 || size == 0) + return res; + + if (ovl_path_type(dentry->d_parent) != OVL_PATH_MERGE) + return res; + + /* filter out private xattrs */ + for (off = 0; off < res;) { + char *s = list + off; + size_t slen = strlen(s) + 1; + + BUG_ON(off + slen > res); + + if (ovl_is_private_xattr(s)) { + res -= slen; + memmove(s, s + slen, res - off); + } else { + off += slen; + } + } + + return res; +} + +int ovl_removexattr(struct dentry *dentry, const char *name) +{ + int err; + struct path realpath; + enum ovl_path_type type; + + err = ovl_want_write(dentry); + if (err) + goto out; + + if (ovl_path_type(dentry->d_parent) == OVL_PATH_MERGE && + ovl_is_private_xattr(name)) + goto out_drop_write; + + type = ovl_path_real(dentry, &realpath); + if (type == OVL_PATH_LOWER) { + err = vfs_getxattr(realpath.dentry, name, NULL, 0); + if (err < 0) + goto out_drop_write; + + err = ovl_copy_up(dentry); + if (err) + goto out_drop_write; + + ovl_path_upper(dentry, &realpath); + } + + err = vfs_removexattr(realpath.dentry, name); +out_drop_write: + ovl_drop_write(dentry); +out: + return err; +} + +static bool ovl_open_need_copy_up(int flags, enum ovl_path_type type, + struct dentry *realdentry) +{ + if (type != OVL_PATH_LOWER) + return false; + + if (special_file(realdentry->d_inode->i_mode)) + return false; + + if (!(OPEN_FMODE(flags) & FMODE_WRITE) && !(flags & O_TRUNC)) + return false; + + return true; +} + +static int ovl_dentry_open(struct dentry *dentry, struct file *file, + const struct cred *cred) +{ + int err; + struct path realpath; + enum ovl_path_type type; + bool want_write = false; + + type = ovl_path_real(dentry, &realpath); + if (ovl_open_need_copy_up(file->f_flags, type, realpath.dentry)) { + want_write = true; + err = ovl_want_write(dentry); + if (err) + goto out; + + if (file->f_flags & O_TRUNC) + err = ovl_copy_up_last(dentry, NULL, true); + else + err = ovl_copy_up(dentry); + if (err) + goto out_drop_write; + + ovl_path_upper(dentry, &realpath); + } + + err = vfs_open(&realpath, file, cred); +out_drop_write: + if (want_write) + ovl_drop_write(dentry); +out: + return err; +} + +static const struct inode_operations ovl_file_inode_operations = { + .setattr = ovl_setattr, + .permission = ovl_permission, + .getattr = ovl_getattr, + .setxattr = ovl_setxattr, + .getxattr = ovl_getxattr, + .listxattr = ovl_listxattr, + .removexattr = ovl_removexattr, + .dentry_open = ovl_dentry_open, +}; + +static const struct inode_operations ovl_symlink_inode_operations = { + .setattr = ovl_setattr, + .follow_link = ovl_follow_link, + .put_link = ovl_put_link, + .readlink = ovl_readlink, + .getattr = ovl_getattr, + .setxattr = ovl_setxattr, + .getxattr = ovl_getxattr, + .listxattr = ovl_listxattr, + .removexattr = ovl_removexattr, +}; + +struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, + struct ovl_entry *oe) +{ + struct inode *inode; + + inode = new_inode(sb); + if (!inode) + return NULL; + + mode &= S_IFMT; + + inode->i_ino = get_next_ino(); + inode->i_mode = mode; + inode->i_flags |= S_NOATIME | S_NOCMTIME; + + switch (mode) { + case S_IFDIR: + inode->i_private = oe; + inode->i_op = &ovl_dir_inode_operations; + inode->i_fop = &ovl_dir_operations; + break; + + case S_IFLNK: + inode->i_op = &ovl_symlink_inode_operations; + break; + + case S_IFREG: + case S_IFSOCK: + case S_IFBLK: + case S_IFCHR: + case S_IFIFO: + inode->i_op = &ovl_file_inode_operations; + break; + + default: + WARN(1, "illegal file type: %i\n", mode); + iput(inode); + inode = NULL; + } + + return inode; + +} diff --git a/fs/overlayfs/overlayfs.h b/fs/overlayfs/overlayfs.h new file mode 100644 index 000000000000..814bed33dd07 --- /dev/null +++ b/fs/overlayfs/overlayfs.h @@ -0,0 +1,191 @@ +/* + * + * Copyright (C) 2011 Novell Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/kernel.h> + +struct ovl_entry; + +enum ovl_path_type { + OVL_PATH_PURE_UPPER, + OVL_PATH_UPPER, + OVL_PATH_MERGE, + OVL_PATH_LOWER, +}; + +extern const char *ovl_opaque_xattr; + +static inline int ovl_do_rmdir(struct inode *dir, struct dentry *dentry) +{ + int err = vfs_rmdir(dir, dentry); + pr_debug("rmdir(%pd2) = %i\n", dentry, err); + return err; +} + +static inline int ovl_do_unlink(struct inode *dir, struct dentry *dentry) +{ + int err = vfs_unlink(dir, dentry, NULL); + pr_debug("unlink(%pd2) = %i\n", dentry, err); + return err; +} + +static inline int ovl_do_link(struct dentry *old_dentry, struct inode *dir, + struct dentry *new_dentry, bool debug) +{ + int err = vfs_link(old_dentry, dir, new_dentry, NULL); + if (debug) { + pr_debug("link(%pd2, %pd2) = %i\n", + old_dentry, new_dentry, err); + } + return err; +} + +static inline int ovl_do_create(struct inode *dir, struct dentry *dentry, + umode_t mode, bool debug) +{ + int err = vfs_create(dir, dentry, mode, true); + if (debug) + pr_debug("create(%pd2, 0%o) = %i\n", dentry, mode, err); + return err; +} + +static inline int ovl_do_mkdir(struct inode *dir, struct dentry *dentry, + umode_t mode, bool debug) +{ + int err = vfs_mkdir(dir, dentry, mode); + if (debug) + pr_debug("mkdir(%pd2, 0%o) = %i\n", dentry, mode, err); + return err; +} + +static inline int ovl_do_mknod(struct inode *dir, struct dentry *dentry, + umode_t mode, dev_t dev, bool debug) +{ + int err = vfs_mknod(dir, dentry, mode, dev); + if (debug) { + pr_debug("mknod(%pd2, 0%o, 0%o) = %i\n", + dentry, mode, dev, err); + } + return err; +} + +static inline int ovl_do_symlink(struct inode *dir, struct dentry *dentry, + const char *oldname, bool debug) +{ + int err = vfs_symlink(dir, dentry, oldname); + if (debug) + pr_debug("symlink(\"%s\", %pd2) = %i\n", oldname, dentry, err); + return err; +} + +static inline int ovl_do_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + int err = vfs_setxattr(dentry, name, value, size, flags); + pr_debug("setxattr(%pd2, \"%s\", \"%*s\", 0x%x) = %i\n", + dentry, name, (int) size, (char *) value, flags, err); + return err; +} + +static inline int ovl_do_removexattr(struct dentry *dentry, const char *name) +{ + int err = vfs_removexattr(dentry, name); + pr_debug("removexattr(%pd2, \"%s\") = %i\n", dentry, name, err); + return err; +} + +static inline int ovl_do_rename(struct inode *olddir, struct dentry *olddentry, + struct inode *newdir, struct dentry *newdentry, + unsigned int flags) +{ + int err; + + pr_debug("rename2(%pd2, %pd2, 0x%x)\n", + olddentry, newdentry, flags); + + err = vfs_rename(olddir, olddentry, newdir, newdentry, NULL, flags); + + if (err) { + pr_debug("...rename2(%pd2, %pd2, ...) = %i\n", + olddentry, newdentry, err); + } + return err; +} + +static inline int ovl_do_whiteout(struct inode *dir, struct dentry *dentry) +{ + int err = vfs_whiteout(dir, dentry); + pr_debug("whiteout(%pd2) = %i\n", dentry, err); + return err; +} + +enum ovl_path_type ovl_path_type(struct dentry *dentry); +u64 ovl_dentry_version_get(struct dentry *dentry); +void ovl_dentry_version_inc(struct dentry *dentry); +void ovl_path_upper(struct dentry *dentry, struct path *path); +void ovl_path_lower(struct dentry *dentry, struct path *path); +enum ovl_path_type ovl_path_real(struct dentry *dentry, struct path *path); +struct dentry *ovl_dentry_upper(struct dentry *dentry); +struct dentry *ovl_dentry_lower(struct dentry *dentry); +struct dentry *ovl_dentry_real(struct dentry *dentry); +struct dentry *ovl_entry_real(struct ovl_entry *oe, bool *is_upper); +struct ovl_dir_cache *ovl_dir_cache(struct dentry *dentry); +void ovl_set_dir_cache(struct dentry *dentry, struct ovl_dir_cache *cache); +struct dentry *ovl_workdir(struct dentry *dentry); +int ovl_want_write(struct dentry *dentry); +void ovl_drop_write(struct dentry *dentry); +bool ovl_dentry_is_opaque(struct dentry *dentry); +void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque); +bool ovl_is_whiteout(struct dentry *dentry); +void ovl_dentry_update(struct dentry *dentry, struct dentry *upperdentry); +struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, + unsigned int flags); +struct file *ovl_path_open(struct path *path, int flags); + +struct dentry *ovl_upper_create(struct dentry *upperdir, struct dentry *dentry, + struct kstat *stat, const char *link); + +/* readdir.c */ +extern const struct file_operations ovl_dir_operations; +int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list); +void ovl_cleanup_whiteouts(struct dentry *upper, struct list_head *list); +void ovl_cache_free(struct list_head *list); + +/* inode.c */ +int ovl_setattr(struct dentry *dentry, struct iattr *attr); +int ovl_permission(struct inode *inode, int mask); +int ovl_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags); +ssize_t ovl_getxattr(struct dentry *dentry, const char *name, + void *value, size_t size); +ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size); +int ovl_removexattr(struct dentry *dentry, const char *name); + +struct inode *ovl_new_inode(struct super_block *sb, umode_t mode, + struct ovl_entry *oe); +static inline void ovl_copyattr(struct inode *from, struct inode *to) +{ + to->i_uid = from->i_uid; + to->i_gid = from->i_gid; +} + +/* dir.c */ +extern const struct inode_operations ovl_dir_inode_operations; +struct dentry *ovl_lookup_temp(struct dentry *workdir, struct dentry *dentry); +int ovl_create_real(struct inode *dir, struct dentry *newdentry, + struct kstat *stat, const char *link, + struct dentry *hardlink, bool debug); +void ovl_cleanup(struct inode *dir, struct dentry *dentry); + +/* copy_up.c */ +int ovl_copy_up(struct dentry *dentry); +int ovl_copy_up_one(struct dentry *parent, struct dentry *dentry, + struct path *lowerpath, struct kstat *stat, + struct iattr *attr); +int ovl_copy_xattr(struct dentry *old, struct dentry *new); +int ovl_set_attr(struct dentry *upper, struct kstat *stat); diff --git a/fs/overlayfs/readdir.c b/fs/overlayfs/readdir.c new file mode 100644 index 000000000000..910553f37aca --- /dev/null +++ b/fs/overlayfs/readdir.c @@ -0,0 +1,590 @@ +/* + * + * Copyright (C) 2011 Novell Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/fs.h> +#include <linux/slab.h> +#include <linux/namei.h> +#include <linux/file.h> +#include <linux/xattr.h> +#include <linux/rbtree.h> +#include <linux/security.h> +#include <linux/cred.h> +#include "overlayfs.h" + +struct ovl_cache_entry { + unsigned int len; + unsigned int type; + u64 ino; + bool is_whiteout; + struct list_head l_node; + struct rb_node node; + char name[]; +}; + +struct ovl_dir_cache { + long refcount; + u64 version; + struct list_head entries; +}; + +struct ovl_readdir_data { + struct dir_context ctx; + bool is_merge; + struct rb_root root; + struct list_head *list; + struct list_head middle; + int count; + int err; +}; + +struct ovl_dir_file { + bool is_real; + bool is_upper; + struct ovl_dir_cache *cache; + struct ovl_cache_entry cursor; + struct file *realfile; + struct file *upperfile; +}; + +static struct ovl_cache_entry *ovl_cache_entry_from_node(struct rb_node *n) +{ + return container_of(n, struct ovl_cache_entry, node); +} + +static struct ovl_cache_entry *ovl_cache_entry_find(struct rb_root *root, + const char *name, int len) +{ + struct rb_node *node = root->rb_node; + int cmp; + + while (node) { + struct ovl_cache_entry *p = ovl_cache_entry_from_node(node); + + cmp = strncmp(name, p->name, len); + if (cmp > 0) + node = p->node.rb_right; + else if (cmp < 0 || len < p->len) + node = p->node.rb_left; + else + return p; + } + + return NULL; +} + +static struct ovl_cache_entry *ovl_cache_entry_new(const char *name, int len, + u64 ino, unsigned int d_type) +{ + struct ovl_cache_entry *p; + size_t size = offsetof(struct ovl_cache_entry, name[len + 1]); + + p = kmalloc(size, GFP_KERNEL); + if (p) { + memcpy(p->name, name, len); + p->name[len] = '\0'; + p->len = len; + p->type = d_type; + p->ino = ino; + p->is_whiteout = false; + } + + return p; +} + +static int ovl_cache_entry_add_rb(struct ovl_readdir_data *rdd, + const char *name, int len, u64 ino, + unsigned int d_type) +{ + struct rb_node **newp = &rdd->root.rb_node; + struct rb_node *parent = NULL; + struct ovl_cache_entry *p; + + while (*newp) { + int cmp; + struct ovl_cache_entry *tmp; + + parent = *newp; + tmp = ovl_cache_entry_from_node(*newp); + cmp = strncmp(name, tmp->name, len); + if (cmp > 0) + newp = &tmp->node.rb_right; + else if (cmp < 0 || len < tmp->len) + newp = &tmp->node.rb_left; + else + return 0; + } + + p = ovl_cache_entry_new(name, len, ino, d_type); + if (p == NULL) + return -ENOMEM; + + list_add_tail(&p->l_node, rdd->list); + rb_link_node(&p->node, parent, newp); + rb_insert_color(&p->node, &rdd->root); + + return 0; +} + +static int ovl_fill_lower(struct ovl_readdir_data *rdd, + const char *name, int namelen, + loff_t offset, u64 ino, unsigned int d_type) +{ + struct ovl_cache_entry *p; + + p = ovl_cache_entry_find(&rdd->root, name, namelen); + if (p) { + list_move_tail(&p->l_node, &rdd->middle); + } else { + p = ovl_cache_entry_new(name, namelen, ino, d_type); + if (p == NULL) + rdd->err = -ENOMEM; + else + list_add_tail(&p->l_node, &rdd->middle); + } + + return rdd->err; +} + +void ovl_cache_free(struct list_head *list) +{ + struct ovl_cache_entry *p; + struct ovl_cache_entry *n; + + list_for_each_entry_safe(p, n, list, l_node) + kfree(p); + + INIT_LIST_HEAD(list); +} + +static void ovl_cache_put(struct ovl_dir_file *od, struct dentry *dentry) +{ + struct ovl_dir_cache *cache = od->cache; + + list_del(&od->cursor.l_node); + WARN_ON(cache->refcount <= 0); + cache->refcount--; + if (!cache->refcount) { + if (ovl_dir_cache(dentry) == cache) + ovl_set_dir_cache(dentry, NULL); + + ovl_cache_free(&cache->entries); + kfree(cache); + } +} + +static int ovl_fill_merge(void *buf, const char *name, int namelen, + loff_t offset, u64 ino, unsigned int d_type) +{ + struct ovl_readdir_data *rdd = buf; + + rdd->count++; + if (!rdd->is_merge) + return ovl_cache_entry_add_rb(rdd, name, namelen, ino, d_type); + else + return ovl_fill_lower(rdd, name, namelen, offset, ino, d_type); +} + +static inline int ovl_dir_read(struct path *realpath, + struct ovl_readdir_data *rdd) +{ + struct file *realfile; + int err; + + realfile = ovl_path_open(realpath, O_RDONLY | O_DIRECTORY); + if (IS_ERR(realfile)) + return PTR_ERR(realfile); + + rdd->ctx.pos = 0; + do { + rdd->count = 0; + rdd->err = 0; + err = iterate_dir(realfile, &rdd->ctx); + if (err >= 0) + err = rdd->err; + } while (!err && rdd->count); + fput(realfile); + + return err; +} + +static void ovl_dir_reset(struct file *file) +{ + struct ovl_dir_file *od = file->private_data; + struct ovl_dir_cache *cache = od->cache; + struct dentry *dentry = file->f_path.dentry; + enum ovl_path_type type = ovl_path_type(dentry); + + if (cache && ovl_dentry_version_get(dentry) != cache->version) { + ovl_cache_put(od, dentry); + od->cache = NULL; + } + WARN_ON(!od->is_real && type != OVL_PATH_MERGE); + if (od->is_real && type == OVL_PATH_MERGE) + od->is_real = false; +} + +static int ovl_dir_mark_whiteouts(struct dentry *dir, + struct ovl_readdir_data *rdd) +{ + struct ovl_cache_entry *p; + struct dentry *dentry; + const struct cred *old_cred; + struct cred *override_cred; + + override_cred = prepare_creds(); + if (!override_cred) { + ovl_cache_free(rdd->list); + return -ENOMEM; + } + + /* + * CAP_DAC_OVERRIDE for lookup + */ + cap_raise(override_cred->cap_effective, CAP_DAC_OVERRIDE); + old_cred = override_creds(override_cred); + + mutex_lock(&dir->d_inode->i_mutex); + list_for_each_entry(p, rdd->list, l_node) { + if (!p->name) + continue; + + if (p->type != DT_CHR) + continue; + + dentry = lookup_one_len(p->name, dir, p->len); + if (IS_ERR(dentry)) + continue; + + p->is_whiteout = ovl_is_whiteout(dentry); + dput(dentry); + } + mutex_unlock(&dir->d_inode->i_mutex); + + revert_creds(old_cred); + put_cred(override_cred); + + return 0; +} + +static inline int ovl_dir_read_merged(struct path *upperpath, + struct path *lowerpath, + struct list_head *list) +{ + int err; + struct ovl_readdir_data rdd = { + .ctx.actor = ovl_fill_merge, + .list = list, + .root = RB_ROOT, + .is_merge = false, + }; + + if (upperpath->dentry) { + err = ovl_dir_read(upperpath, &rdd); + if (err) + goto out; + + if (lowerpath->dentry) { + err = ovl_dir_mark_whiteouts(upperpath->dentry, &rdd); + if (err) + goto out; + } + } + if (lowerpath->dentry) { + /* + * Insert lowerpath entries before upperpath ones, this allows + * offsets to be reasonably constant + */ + list_add(&rdd.middle, rdd.list); + rdd.is_merge = true; + err = ovl_dir_read(lowerpath, &rdd); + list_del(&rdd.middle); + } +out: + return err; + +} + +static void ovl_seek_cursor(struct ovl_dir_file *od, loff_t pos) +{ + struct ovl_cache_entry *p; + loff_t off = 0; + + list_for_each_entry(p, &od->cache->entries, l_node) { + if (!p->name) + continue; + if (off >= pos) + break; + off++; + } + list_move_tail(&od->cursor.l_node, &p->l_node); +} + +static struct ovl_dir_cache *ovl_cache_get(struct dentry *dentry) +{ + int res; + struct path lowerpath; + struct path upperpath; + struct ovl_dir_cache *cache; + + cache = ovl_dir_cache(dentry); + if (cache && ovl_dentry_version_get(dentry) == cache->version) { + cache->refcount++; + return cache; + } + ovl_set_dir_cache(dentry, NULL); + + cache = kzalloc(sizeof(struct ovl_dir_cache), GFP_KERNEL); + if (!cache) + return ERR_PTR(-ENOMEM); + + cache->refcount = 1; + INIT_LIST_HEAD(&cache->entries); + + ovl_path_lower(dentry, &lowerpath); + ovl_path_upper(dentry, &upperpath); + + res = ovl_dir_read_merged(&upperpath, &lowerpath, &cache->entries); + if (res) { + ovl_cache_free(&cache->entries); + kfree(cache); + return ERR_PTR(res); + } + + cache->version = ovl_dentry_version_get(dentry); + ovl_set_dir_cache(dentry, cache); + + return cache; +} + +static int ovl_iterate(struct file *file, struct dir_context *ctx) +{ + struct ovl_dir_file *od = file->private_data; + struct dentry *dentry = file->f_path.dentry; + + if (!ctx->pos) + ovl_dir_reset(file); + + if (od->is_real) + return iterate_dir(od->realfile, ctx); + + if (!od->cache) { + struct ovl_dir_cache *cache; + + cache = ovl_cache_get(dentry); + if (IS_ERR(cache)) + return PTR_ERR(cache); + + od->cache = cache; + ovl_seek_cursor(od, ctx->pos); + } + + while (od->cursor.l_node.next != &od->cache->entries) { + struct ovl_cache_entry *p; + + p = list_entry(od->cursor.l_node.next, struct ovl_cache_entry, l_node); + /* Skip cursors */ + if (p->name) { + if (!p->is_whiteout) { + if (!dir_emit(ctx, p->name, p->len, p->ino, p->type)) + break; + } + ctx->pos++; + } + list_move(&od->cursor.l_node, &p->l_node); + } + return 0; +} + +static loff_t ovl_dir_llseek(struct file *file, loff_t offset, int origin) +{ + loff_t res; + struct ovl_dir_file *od = file->private_data; + + mutex_lock(&file_inode(file)->i_mutex); + if (!file->f_pos) + ovl_dir_reset(file); + + if (od->is_real) { + res = vfs_llseek(od->realfile, offset, origin); + file->f_pos = od->realfile->f_pos; + } else { + res = -EINVAL; + + switch (origin) { + case SEEK_CUR: + offset += file->f_pos; + break; + case SEEK_SET: + break; + default: + goto out_unlock; + } + if (offset < 0) + goto out_unlock; + + if (offset != file->f_pos) { + file->f_pos = offset; + if (od->cache) + ovl_seek_cursor(od, offset); + } + res = offset; + } +out_unlock: + mutex_unlock(&file_inode(file)->i_mutex); + + return res; +} + +static int ovl_dir_fsync(struct file *file, loff_t start, loff_t end, + int datasync) +{ + struct ovl_dir_file *od = file->private_data; + struct dentry *dentry = file->f_path.dentry; + struct file *realfile = od->realfile; + + /* + * Need to check if we started out being a lower dir, but got copied up + */ + if (!od->is_upper && ovl_path_type(dentry) == OVL_PATH_MERGE) { + struct inode *inode = file_inode(file); + + realfile = od->upperfile; + if (!realfile) { + struct path upperpath; + + ovl_path_upper(dentry, &upperpath); + realfile = ovl_path_open(&upperpath, O_RDONLY); + mutex_lock(&inode->i_mutex); + if (!od->upperfile) { + if (IS_ERR(realfile)) { + mutex_unlock(&inode->i_mutex); + return PTR_ERR(realfile); + } + od->upperfile = realfile; + } else { + /* somebody has beaten us to it */ + if (!IS_ERR(realfile)) + fput(realfile); + realfile = od->upperfile; + } + mutex_unlock(&inode->i_mutex); + } + } + + return vfs_fsync_range(realfile, start, end, datasync); +} + +static int ovl_dir_release(struct inode *inode, struct file *file) +{ + struct ovl_dir_file *od = file->private_data; + + if (od->cache) { + mutex_lock(&inode->i_mutex); + ovl_cache_put(od, file->f_path.dentry); + mutex_unlock(&inode->i_mutex); + } + fput(od->realfile); + if (od->upperfile) + fput(od->upperfile); + kfree(od); + + return 0; +} + +static int ovl_dir_open(struct inode *inode, struct file *file) +{ + struct path realpath; + struct file *realfile; + struct ovl_dir_file *od; + enum ovl_path_type type; + + od = kzalloc(sizeof(struct ovl_dir_file), GFP_KERNEL); + if (!od) + return -ENOMEM; + + type = ovl_path_real(file->f_path.dentry, &realpath); + realfile = ovl_path_open(&realpath, file->f_flags); + if (IS_ERR(realfile)) { + kfree(od); + return PTR_ERR(realfile); + } + INIT_LIST_HEAD(&od->cursor.l_node); + od->realfile = realfile; + od->is_real = (type != OVL_PATH_MERGE); + od->is_upper = (type != OVL_PATH_LOWER); + file->private_data = od; + + return 0; +} + +const struct file_operations ovl_dir_operations = { + .read = generic_read_dir, + .open = ovl_dir_open, + .iterate = ovl_iterate, + .llseek = ovl_dir_llseek, + .fsync = ovl_dir_fsync, + .release = ovl_dir_release, +}; + +int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list) +{ + int err; + struct path lowerpath; + struct path upperpath; + struct ovl_cache_entry *p; + + ovl_path_upper(dentry, &upperpath); + ovl_path_lower(dentry, &lowerpath); + + err = ovl_dir_read_merged(&upperpath, &lowerpath, list); + if (err) + return err; + + err = 0; + + list_for_each_entry(p, list, l_node) { + if (p->is_whiteout) + continue; + + if (p->name[0] == '.') { + if (p->len == 1) + continue; + if (p->len == 2 && p->name[1] == '.') + continue; + } + err = -ENOTEMPTY; + break; + } + + return err; +} + +void ovl_cleanup_whiteouts(struct dentry *upper, struct list_head *list) +{ + struct ovl_cache_entry *p; + + mutex_lock_nested(&upper->d_inode->i_mutex, I_MUTEX_PARENT); + list_for_each_entry(p, list, l_node) { + struct dentry *dentry; + + if (!p->is_whiteout) + continue; + + dentry = lookup_one_len(p->name, upper, p->len); + if (IS_ERR(dentry)) { + pr_err("overlayfs: lookup '%s/%.*s' failed (%i)\n", + upper->d_name.name, p->len, p->name, + (int) PTR_ERR(dentry)); + continue; + } + ovl_cleanup(upper->d_inode, dentry); + dput(dentry); + } + mutex_unlock(&upper->d_inode->i_mutex); +} diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c new file mode 100644 index 000000000000..08b704cebfc4 --- /dev/null +++ b/fs/overlayfs/super.c @@ -0,0 +1,796 @@ +/* + * + * Copyright (C) 2011 Novell Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/fs.h> +#include <linux/namei.h> +#include <linux/xattr.h> +#include <linux/security.h> +#include <linux/mount.h> +#include <linux/slab.h> +#include <linux/parser.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/statfs.h> +#include <linux/seq_file.h> +#include "overlayfs.h" + +MODULE_AUTHOR("Miklos Szeredi <miklos@szeredi.hu>"); +MODULE_DESCRIPTION("Overlay filesystem"); +MODULE_LICENSE("GPL"); + +#define OVERLAYFS_SUPER_MAGIC 0x794c764f + +struct ovl_config { + char *lowerdir; + char *upperdir; + char *workdir; +}; + +/* private information held for overlayfs's superblock */ +struct ovl_fs { + struct vfsmount *upper_mnt; + struct vfsmount *lower_mnt; + struct dentry *workdir; + long lower_namelen; + /* pathnames of lower and upper dirs, for show_options */ + struct ovl_config config; +}; + +struct ovl_dir_cache; + +/* private information held for every overlayfs dentry */ +struct ovl_entry { + struct dentry *__upperdentry; + struct dentry *lowerdentry; + struct ovl_dir_cache *cache; + union { + struct { + u64 version; + bool opaque; + }; + struct rcu_head rcu; + }; +}; + +const char *ovl_opaque_xattr = "trusted.overlay.opaque"; + + +enum ovl_path_type ovl_path_type(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + if (oe->__upperdentry) { + if (oe->lowerdentry) { + if (S_ISDIR(dentry->d_inode->i_mode)) + return OVL_PATH_MERGE; + else + return OVL_PATH_UPPER; + } else { + if (oe->opaque) + return OVL_PATH_UPPER; + else + return OVL_PATH_PURE_UPPER; + } + } else { + return OVL_PATH_LOWER; + } +} + +static struct dentry *ovl_upperdentry_dereference(struct ovl_entry *oe) +{ + struct dentry *upperdentry = ACCESS_ONCE(oe->__upperdentry); + /* + * Make sure to order reads to upperdentry wrt ovl_dentry_update() + */ + smp_read_barrier_depends(); + return upperdentry; +} + +void ovl_path_upper(struct dentry *dentry, struct path *path) +{ + struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_entry *oe = dentry->d_fsdata; + + path->mnt = ofs->upper_mnt; + path->dentry = ovl_upperdentry_dereference(oe); +} + +enum ovl_path_type ovl_path_real(struct dentry *dentry, struct path *path) +{ + + enum ovl_path_type type = ovl_path_type(dentry); + + if (type == OVL_PATH_LOWER) + ovl_path_lower(dentry, path); + else + ovl_path_upper(dentry, path); + + return type; +} + +struct dentry *ovl_dentry_upper(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + return ovl_upperdentry_dereference(oe); +} + +struct dentry *ovl_dentry_lower(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + return oe->lowerdentry; +} + +struct dentry *ovl_dentry_real(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + struct dentry *realdentry; + + realdentry = ovl_upperdentry_dereference(oe); + if (!realdentry) + realdentry = oe->lowerdentry; + + return realdentry; +} + +struct dentry *ovl_entry_real(struct ovl_entry *oe, bool *is_upper) +{ + struct dentry *realdentry; + + realdentry = ovl_upperdentry_dereference(oe); + if (realdentry) { + *is_upper = true; + } else { + realdentry = oe->lowerdentry; + *is_upper = false; + } + return realdentry; +} + +struct ovl_dir_cache *ovl_dir_cache(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + return oe->cache; +} + +void ovl_set_dir_cache(struct dentry *dentry, struct ovl_dir_cache *cache) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + oe->cache = cache; +} + +void ovl_path_lower(struct dentry *dentry, struct path *path) +{ + struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct ovl_entry *oe = dentry->d_fsdata; + + path->mnt = ofs->lower_mnt; + path->dentry = oe->lowerdentry; +} + +int ovl_want_write(struct dentry *dentry) +{ + struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + return mnt_want_write(ofs->upper_mnt); +} + +void ovl_drop_write(struct dentry *dentry) +{ + struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + mnt_drop_write(ofs->upper_mnt); +} + +struct dentry *ovl_workdir(struct dentry *dentry) +{ + struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + return ofs->workdir; +} + +bool ovl_dentry_is_opaque(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + return oe->opaque; +} + +void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque) +{ + struct ovl_entry *oe = dentry->d_fsdata; + oe->opaque = opaque; +} + +void ovl_dentry_update(struct dentry *dentry, struct dentry *upperdentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + WARN_ON(!mutex_is_locked(&upperdentry->d_parent->d_inode->i_mutex)); + WARN_ON(oe->__upperdentry); + BUG_ON(!upperdentry->d_inode); + /* + * Make sure upperdentry is consistent before making it visible to + * ovl_upperdentry_dereference(). + */ + smp_wmb(); + oe->__upperdentry = upperdentry; +} + +void ovl_dentry_version_inc(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + WARN_ON(!mutex_is_locked(&dentry->d_inode->i_mutex)); + oe->version++; +} + +u64 ovl_dentry_version_get(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + WARN_ON(!mutex_is_locked(&dentry->d_inode->i_mutex)); + return oe->version; +} + +bool ovl_is_whiteout(struct dentry *dentry) +{ + struct inode *inode = dentry->d_inode; + + return inode && IS_WHITEOUT(inode); +} + +static bool ovl_is_opaquedir(struct dentry *dentry) +{ + int res; + char val; + struct inode *inode = dentry->d_inode; + + if (!S_ISDIR(inode->i_mode) || !inode->i_op->getxattr) + return false; + + res = inode->i_op->getxattr(dentry, ovl_opaque_xattr, &val, 1); + if (res == 1 && val == 'y') + return true; + + return false; +} + +static void ovl_dentry_release(struct dentry *dentry) +{ + struct ovl_entry *oe = dentry->d_fsdata; + + if (oe) { + dput(oe->__upperdentry); + dput(oe->lowerdentry); + kfree_rcu(oe, rcu); + } +} + +static const struct dentry_operations ovl_dentry_operations = { + .d_release = ovl_dentry_release, +}; + +static struct ovl_entry *ovl_alloc_entry(void) +{ + return kzalloc(sizeof(struct ovl_entry), GFP_KERNEL); +} + +static inline struct dentry *ovl_lookup_real(struct dentry *dir, + struct qstr *name) +{ + struct dentry *dentry; + + mutex_lock(&dir->d_inode->i_mutex); + dentry = lookup_one_len(name->name, dir, name->len); + mutex_unlock(&dir->d_inode->i_mutex); + + if (IS_ERR(dentry)) { + if (PTR_ERR(dentry) == -ENOENT) + dentry = NULL; + } else if (!dentry->d_inode) { + dput(dentry); + dentry = NULL; + } + return dentry; +} + +struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry, + unsigned int flags) +{ + struct ovl_entry *oe; + struct dentry *upperdir; + struct dentry *lowerdir; + struct dentry *upperdentry = NULL; + struct dentry *lowerdentry = NULL; + struct inode *inode = NULL; + int err; + + err = -ENOMEM; + oe = ovl_alloc_entry(); + if (!oe) + goto out; + + upperdir = ovl_dentry_upper(dentry->d_parent); + lowerdir = ovl_dentry_lower(dentry->d_parent); + + if (upperdir) { + upperdentry = ovl_lookup_real(upperdir, &dentry->d_name); + err = PTR_ERR(upperdentry); + if (IS_ERR(upperdentry)) + goto out_put_dir; + + if (lowerdir && upperdentry) { + if (ovl_is_whiteout(upperdentry)) { + dput(upperdentry); + upperdentry = NULL; + oe->opaque = true; + } else if (ovl_is_opaquedir(upperdentry)) { + oe->opaque = true; + } + } + } + if (lowerdir && !oe->opaque) { + lowerdentry = ovl_lookup_real(lowerdir, &dentry->d_name); + err = PTR_ERR(lowerdentry); + if (IS_ERR(lowerdentry)) + goto out_dput_upper; + } + + if (lowerdentry && upperdentry && + (!S_ISDIR(upperdentry->d_inode->i_mode) || + !S_ISDIR(lowerdentry->d_inode->i_mode))) { + dput(lowerdentry); + lowerdentry = NULL; + oe->opaque = true; + } + + if (lowerdentry || upperdentry) { + struct dentry *realdentry; + + realdentry = upperdentry ? upperdentry : lowerdentry; + err = -ENOMEM; + inode = ovl_new_inode(dentry->d_sb, realdentry->d_inode->i_mode, + oe); + if (!inode) + goto out_dput; + ovl_copyattr(realdentry->d_inode, inode); + } + + oe->__upperdentry = upperdentry; + oe->lowerdentry = lowerdentry; + + dentry->d_fsdata = oe; + d_add(dentry, inode); + + return NULL; + +out_dput: + dput(lowerdentry); +out_dput_upper: + dput(upperdentry); +out_put_dir: + kfree(oe); +out: + return ERR_PTR(err); +} + +struct file *ovl_path_open(struct path *path, int flags) +{ + return dentry_open(path, flags, current_cred()); +} + +static void ovl_put_super(struct super_block *sb) +{ + struct ovl_fs *ufs = sb->s_fs_info; + + dput(ufs->workdir); + mntput(ufs->upper_mnt); + mntput(ufs->lower_mnt); + + kfree(ufs->config.lowerdir); + kfree(ufs->config.upperdir); + kfree(ufs->config.workdir); + kfree(ufs); +} + +/** + * ovl_statfs + * @sb: The overlayfs super block + * @buf: The struct kstatfs to fill in with stats + * + * Get the filesystem statistics. As writes always target the upper layer + * filesystem pass the statfs to the same filesystem. + */ +static int ovl_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + struct ovl_fs *ofs = dentry->d_sb->s_fs_info; + struct dentry *root_dentry = dentry->d_sb->s_root; + struct path path; + int err; + + ovl_path_upper(root_dentry, &path); + + err = vfs_statfs(&path, buf); + if (!err) { + buf->f_namelen = max(buf->f_namelen, ofs->lower_namelen); + buf->f_type = OVERLAYFS_SUPER_MAGIC; + } + + return err; +} + +/** + * ovl_show_options + * + * Prints the mount options for a given superblock. + * Returns zero; does not fail. + */ +static int ovl_show_options(struct seq_file *m, struct dentry *dentry) +{ + struct super_block *sb = dentry->d_sb; + struct ovl_fs *ufs = sb->s_fs_info; + + seq_printf(m, ",lowerdir=%s", ufs->config.lowerdir); + seq_printf(m, ",upperdir=%s", ufs->config.upperdir); + seq_printf(m, ",workdir=%s", ufs->config.workdir); + return 0; +} + +static const struct super_operations ovl_super_operations = { + .put_super = ovl_put_super, + .statfs = ovl_statfs, + .show_options = ovl_show_options, +}; + +enum { + OPT_LOWERDIR, + OPT_UPPERDIR, + OPT_WORKDIR, + OPT_ERR, +}; + +static const match_table_t ovl_tokens = { + {OPT_LOWERDIR, "lowerdir=%s"}, + {OPT_UPPERDIR, "upperdir=%s"}, + {OPT_WORKDIR, "workdir=%s"}, + {OPT_ERR, NULL} +}; + +static int ovl_parse_opt(char *opt, struct ovl_config *config) +{ + char *p; + + while ((p = strsep(&opt, ",")) != NULL) { + int token; + substring_t args[MAX_OPT_ARGS]; + + if (!*p) + continue; + + token = match_token(p, ovl_tokens, args); + switch (token) { + case OPT_UPPERDIR: + kfree(config->upperdir); + config->upperdir = match_strdup(&args[0]); + if (!config->upperdir) + return -ENOMEM; + break; + + case OPT_LOWERDIR: + kfree(config->lowerdir); + config->lowerdir = match_strdup(&args[0]); + if (!config->lowerdir) + return -ENOMEM; + break; + + case OPT_WORKDIR: + kfree(config->workdir); + config->workdir = match_strdup(&args[0]); + if (!config->workdir) + return -ENOMEM; + break; + + default: + return -EINVAL; + } + } + return 0; +} + +#define OVL_WORKDIR_NAME "work" + +static struct dentry *ovl_workdir_create(struct vfsmount *mnt, + struct dentry *dentry) +{ + struct inode *dir = dentry->d_inode; + struct dentry *work; + int err; + bool retried = false; + + err = mnt_want_write(mnt); + if (err) + return ERR_PTR(err); + + mutex_lock_nested(&dir->i_mutex, I_MUTEX_PARENT); +retry: + work = lookup_one_len(OVL_WORKDIR_NAME, dentry, + strlen(OVL_WORKDIR_NAME)); + + if (!IS_ERR(work)) { + struct kstat stat = { + .mode = S_IFDIR | 0, + }; + + if (work->d_inode) { + err = -EEXIST; + if (retried) + goto out_dput; + + retried = true; + ovl_cleanup(dir, work); + dput(work); + goto retry; + } + + err = ovl_create_real(dir, work, &stat, NULL, NULL, true); + if (err) + goto out_dput; + } +out_unlock: + mutex_unlock(&dir->i_mutex); + mnt_drop_write(mnt); + + return work; + +out_dput: + dput(work); + work = ERR_PTR(err); + goto out_unlock; +} + +static int ovl_mount_dir(const char *name, struct path *path) +{ + int err; + + err = kern_path(name, LOOKUP_FOLLOW, path); + if (err) { + pr_err("overlayfs: failed to resolve '%s': %i\n", name, err); + err = -EINVAL; + } + return err; +} + +static bool ovl_is_allowed_fs_type(struct dentry *root) +{ + const struct dentry_operations *dop = root->d_op; + + /* + * We don't support: + * - automount filesystems + * - filesystems with revalidate (FIXME for lower layer) + * - filesystems with case insensitive names + */ + if (dop && + (dop->d_manage || dop->d_automount || + dop->d_revalidate || dop->d_weak_revalidate || + dop->d_compare || dop->d_hash)) { + return false; + } + return true; +} + +/* Workdir should not be subdir of upperdir and vice versa */ +static bool ovl_workdir_ok(struct dentry *workdir, struct dentry *upperdir) +{ + bool ok = false; + + if (workdir != upperdir) { + ok = (lock_rename(workdir, upperdir) == NULL); + unlock_rename(workdir, upperdir); + } + return ok; +} + +static int ovl_fill_super(struct super_block *sb, void *data, int silent) +{ + struct path lowerpath; + struct path upperpath; + struct path workpath; + struct inode *root_inode; + struct dentry *root_dentry; + struct ovl_entry *oe; + struct ovl_fs *ufs; + struct kstatfs statfs; + int err; + + err = -ENOMEM; + ufs = kzalloc(sizeof(struct ovl_fs), GFP_KERNEL); + if (!ufs) + goto out; + + err = ovl_parse_opt((char *) data, &ufs->config); + if (err) + goto out_free_config; + + /* FIXME: workdir is not needed for a R/O mount */ + err = -EINVAL; + if (!ufs->config.upperdir || !ufs->config.lowerdir || + !ufs->config.workdir) { + pr_err("overlayfs: missing upperdir or lowerdir or workdir\n"); + goto out_free_config; + } + + err = -ENOMEM; + oe = ovl_alloc_entry(); + if (oe == NULL) + goto out_free_config; + + err = ovl_mount_dir(ufs->config.upperdir, &upperpath); + if (err) + goto out_free_oe; + + err = ovl_mount_dir(ufs->config.lowerdir, &lowerpath); + if (err) + goto out_put_upperpath; + + err = ovl_mount_dir(ufs->config.workdir, &workpath); + if (err) + goto out_put_lowerpath; + + err = -EINVAL; + if (!S_ISDIR(upperpath.dentry->d_inode->i_mode) || + !S_ISDIR(lowerpath.dentry->d_inode->i_mode) || + !S_ISDIR(workpath.dentry->d_inode->i_mode)) { + pr_err("overlayfs: upperdir or lowerdir or workdir not a directory\n"); + goto out_put_workpath; + } + + if (upperpath.mnt != workpath.mnt) { + pr_err("overlayfs: workdir and upperdir must reside under the same mount\n"); + goto out_put_workpath; + } + if (!ovl_workdir_ok(workpath.dentry, upperpath.dentry)) { + pr_err("overlayfs: workdir and upperdir must be separate subtrees\n"); + goto out_put_workpath; + } + + if (!ovl_is_allowed_fs_type(upperpath.dentry)) { + pr_err("overlayfs: filesystem of upperdir is not supported\n"); + goto out_put_workpath; + } + + if (!ovl_is_allowed_fs_type(lowerpath.dentry)) { + pr_err("overlayfs: filesystem of lowerdir is not supported\n"); + goto out_put_workpath; + } + + err = vfs_statfs(&lowerpath, &statfs); + if (err) { + pr_err("overlayfs: statfs failed on lowerpath\n"); + goto out_put_workpath; + } + ufs->lower_namelen = statfs.f_namelen; + + sb->s_stack_depth = max(upperpath.mnt->mnt_sb->s_stack_depth, + lowerpath.mnt->mnt_sb->s_stack_depth) + 1; + + err = -EINVAL; + if (sb->s_stack_depth > FILESYSTEM_MAX_STACK_DEPTH) { + pr_err("overlayfs: maximum fs stacking depth exceeded\n"); + goto out_put_workpath; + } + + ufs->upper_mnt = clone_private_mount(&upperpath); + err = PTR_ERR(ufs->upper_mnt); + if (IS_ERR(ufs->upper_mnt)) { + pr_err("overlayfs: failed to clone upperpath\n"); + goto out_put_workpath; + } + + ufs->lower_mnt = clone_private_mount(&lowerpath); + err = PTR_ERR(ufs->lower_mnt); + if (IS_ERR(ufs->lower_mnt)) { + pr_err("overlayfs: failed to clone lowerpath\n"); + goto out_put_upper_mnt; + } + + ufs->workdir = ovl_workdir_create(ufs->upper_mnt, workpath.dentry); + err = PTR_ERR(ufs->workdir); + if (IS_ERR(ufs->workdir)) { + pr_err("overlayfs: failed to create directory %s/%s\n", + ufs->config.workdir, OVL_WORKDIR_NAME); + goto out_put_lower_mnt; + } + + /* + * Make lower_mnt R/O. That way fchmod/fchown on lower file + * will fail instead of modifying lower fs. + */ + ufs->lower_mnt->mnt_flags |= MNT_READONLY; + + /* If the upper fs is r/o, we mark overlayfs r/o too */ + if (ufs->upper_mnt->mnt_sb->s_flags & MS_RDONLY) + sb->s_flags |= MS_RDONLY; + + sb->s_d_op = &ovl_dentry_operations; + + err = -ENOMEM; + root_inode = ovl_new_inode(sb, S_IFDIR, oe); + if (!root_inode) + goto out_put_workdir; + + root_dentry = d_make_root(root_inode); + if (!root_dentry) + goto out_put_workdir; + + mntput(upperpath.mnt); + mntput(lowerpath.mnt); + path_put(&workpath); + + oe->__upperdentry = upperpath.dentry; + oe->lowerdentry = lowerpath.dentry; + + root_dentry->d_fsdata = oe; + + sb->s_magic = OVERLAYFS_SUPER_MAGIC; + sb->s_op = &ovl_super_operations; + sb->s_root = root_dentry; + sb->s_fs_info = ufs; + + return 0; + +out_put_workdir: + dput(ufs->workdir); +out_put_lower_mnt: + mntput(ufs->lower_mnt); +out_put_upper_mnt: + mntput(ufs->upper_mnt); +out_put_workpath: + path_put(&workpath); +out_put_lowerpath: + path_put(&lowerpath); +out_put_upperpath: + path_put(&upperpath); +out_free_oe: + kfree(oe); +out_free_config: + kfree(ufs->config.lowerdir); + kfree(ufs->config.upperdir); + kfree(ufs->config.workdir); + kfree(ufs); +out: + return err; +} + +static struct dentry *ovl_mount(struct file_system_type *fs_type, int flags, + const char *dev_name, void *raw_data) +{ + return mount_nodev(fs_type, flags, raw_data, ovl_fill_super); +} + +static struct file_system_type ovl_fs_type = { + .owner = THIS_MODULE, + .name = "overlayfs", + .mount = ovl_mount, + .kill_sb = kill_anon_super, +}; +MODULE_ALIAS_FS("overlayfs"); + +static int __init ovl_init(void) +{ + return register_filesystem(&ovl_fs_type); +} + +static void __exit ovl_exit(void) +{ + unregister_filesystem(&ovl_fs_type); +} + +module_init(ovl_init); +module_exit(ovl_exit); diff --git a/fs/splice.c b/fs/splice.c index f5cb9ba84510..75c6058eabf2 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -1330,6 +1330,7 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, return ret; } +EXPORT_SYMBOL(do_splice_direct); static int splice_pipe_to_pipe(struct pipe_inode_info *ipipe, struct pipe_inode_info *opipe, diff --git a/include/acpi/acnames.h b/include/acpi/acnames.h index f97804bdf1ff..7461327e14e4 100644 --- a/include/acpi/acnames.h +++ b/include/acpi/acnames.h @@ -52,6 +52,7 @@ #define METHOD_NAME__CBA "_CBA" #define METHOD_NAME__CID "_CID" #define METHOD_NAME__CRS "_CRS" +#define METHOD_NAME__DDN "_DDN" #define METHOD_NAME__HID "_HID" #define METHOD_NAME__INI "_INI" #define METHOD_NAME__PLD "_PLD" diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 57ee0528aacb..f34a0835aa4f 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -433,6 +433,7 @@ int acpi_device_set_power(struct acpi_device *device, int state); int acpi_bus_init_power(struct acpi_device *device); int acpi_device_fix_up_power(struct acpi_device *device); int acpi_bus_update_power(acpi_handle handle, int *state_p); +int acpi_device_update_power(struct acpi_device *device, int *state_p); bool acpi_bus_power_manageable(acpi_handle handle); #ifdef CONFIG_PM diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 9fc1d71c82bc..ab2acf629a64 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -46,7 +46,7 @@ /* Current ACPICA subsystem version in YYYYMMDD format */ -#define ACPI_CA_VERSION 0x20140828 +#define ACPI_CA_VERSION 0x20140926 #include <acpi/acconfig.h> #include <acpi/actypes.h> diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index ac03ec81d342..7000e66f768e 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -721,7 +721,7 @@ typedef u32 acpi_event_type; * | | | +--- Enabled for wake? * | | +----- Set? * | +------- Has a handler? - * +----------- <Reserved> + * +------------- <Reserved> */ typedef u32 acpi_event_status; @@ -729,7 +729,7 @@ typedef u32 acpi_event_status; #define ACPI_EVENT_FLAG_ENABLED (acpi_event_status) 0x01 #define ACPI_EVENT_FLAG_WAKE_ENABLED (acpi_event_status) 0x02 #define ACPI_EVENT_FLAG_SET (acpi_event_status) 0x04 -#define ACPI_EVENT_FLAG_HANDLE (acpi_event_status) 0x08 +#define ACPI_EVENT_FLAG_HAS_HANDLER (acpi_event_status) 0x08 /* Actions for acpi_set_gpe, acpi_gpe_wakeup, acpi_hw_low_set_gpe */ diff --git a/include/dt-bindings/clock/imx6qdl-clock.h b/include/dt-bindings/clock/imx6qdl-clock.h index ddaef8620b2c..b690cdba163b 100644 --- a/include/dt-bindings/clock/imx6qdl-clock.h +++ b/include/dt-bindings/clock/imx6qdl-clock.h @@ -62,8 +62,8 @@ #define IMX6QDL_CLK_USDHC3_SEL 50 #define IMX6QDL_CLK_USDHC4_SEL 51 #define IMX6QDL_CLK_ENFC_SEL 52 -#define IMX6QDL_CLK_EMI_SEL 53 -#define IMX6QDL_CLK_EMI_SLOW_SEL 54 +#define IMX6QDL_CLK_EIM_SEL 53 +#define IMX6QDL_CLK_EIM_SLOW_SEL 54 #define IMX6QDL_CLK_VDO_AXI_SEL 55 #define IMX6QDL_CLK_VPU_AXI_SEL 56 #define IMX6QDL_CLK_CKO1_SEL 57 @@ -106,8 +106,8 @@ #define IMX6QDL_CLK_USDHC4_PODF 94 #define IMX6QDL_CLK_ENFC_PRED 95 #define IMX6QDL_CLK_ENFC_PODF 96 -#define IMX6QDL_CLK_EMI_PODF 97 -#define IMX6QDL_CLK_EMI_SLOW_PODF 98 +#define IMX6QDL_CLK_EIM_PODF 97 +#define IMX6QDL_CLK_EIM_SLOW_PODF 98 #define IMX6QDL_CLK_VPU_AXI_PODF 99 #define IMX6QDL_CLK_CKO1_PODF 100 #define IMX6QDL_CLK_AXI 101 diff --git a/include/linux/acpi.h b/include/linux/acpi.h index b7926bb9b444..407a12f663eb 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -432,6 +432,7 @@ static inline bool acpi_driver_match_device(struct device *dev, int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *); int acpi_device_modalias(struct device *, char *, int); +struct platform_device *acpi_create_platform_device(struct acpi_device *); #define ACPI_PTR(_ptr) (_ptr) #else /* !CONFIG_ACPI */ diff --git a/include/linux/audit.h b/include/linux/audit.h index 36dffeccebdb..e58fe7df8b9c 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -90,7 +90,7 @@ extern unsigned compat_dir_class[]; extern unsigned compat_chattr_class[]; extern unsigned compat_signal_class[]; -extern int __weak audit_classify_compat_syscall(int abi, unsigned syscall); +extern int audit_classify_compat_syscall(int abi, unsigned syscall); /* audit_names->type values */ #define AUDIT_TYPE_UNKNOWN 0 /* we don't know yet */ diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h index 653f0e2b6ca9..abcafaa20b86 100644 --- a/include/linux/clocksource.h +++ b/include/linux/clocksource.h @@ -287,7 +287,7 @@ extern struct clocksource* clocksource_get_next(void); extern void clocksource_change_rating(struct clocksource *cs, int rating); extern void clocksource_suspend(void); extern void clocksource_resume(void); -extern struct clocksource * __init __weak clocksource_default_clock(void); +extern struct clocksource * __init clocksource_default_clock(void); extern void clocksource_mark_unstable(struct clocksource *cs); extern u64 diff --git a/include/linux/cpufreq-dt.h b/include/linux/cpufreq-dt.h new file mode 100644 index 000000000000..0414009e2c30 --- /dev/null +++ b/include/linux/cpufreq-dt.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2014 Marvell + * Thomas Petazzoni <thomas.petazzoni@free-electrons.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __CPUFREQ_DT_H__ +#define __CPUFREQ_DT_H__ + +struct cpufreq_dt_platform_data { + /* + * True when each CPU has its own clock to control its + * frequency, false when all CPUs are controlled by a single + * clock. + */ + bool independent_clocks; +}; + +#endif /* __CPUFREQ_DT_H__ */ diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 138336b6bb04..503b085b7832 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -219,6 +219,7 @@ __ATTR(_name, 0644, show_##_name, store_##_name) struct cpufreq_driver { char name[CPUFREQ_NAME_LEN]; u8 flags; + void *driver_data; /* needed by all drivers */ int (*init) (struct cpufreq_policy *policy); @@ -312,6 +313,7 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data); int cpufreq_unregister_driver(struct cpufreq_driver *driver_data); const char *cpufreq_get_current_driver(void); +void *cpufreq_get_driver_data(void); static inline void cpufreq_verify_within_limits(struct cpufreq_policy *policy, unsigned int min, unsigned int max) diff --git a/include/linux/crash_dump.h b/include/linux/crash_dump.h index 72ab536ad3de..3849fce7ecfe 100644 --- a/include/linux/crash_dump.h +++ b/include/linux/crash_dump.h @@ -14,14 +14,13 @@ extern unsigned long long elfcorehdr_addr; extern unsigned long long elfcorehdr_size; -extern int __weak elfcorehdr_alloc(unsigned long long *addr, - unsigned long long *size); -extern void __weak elfcorehdr_free(unsigned long long addr); -extern ssize_t __weak elfcorehdr_read(char *buf, size_t count, u64 *ppos); -extern ssize_t __weak elfcorehdr_read_notes(char *buf, size_t count, u64 *ppos); -extern int __weak remap_oldmem_pfn_range(struct vm_area_struct *vma, - unsigned long from, unsigned long pfn, - unsigned long size, pgprot_t prot); +extern int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size); +extern void elfcorehdr_free(unsigned long long addr); +extern ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos); +extern ssize_t elfcorehdr_read_notes(char *buf, size_t count, u64 *ppos); +extern int remap_oldmem_pfn_range(struct vm_area_struct *vma, + unsigned long from, unsigned long pfn, + unsigned long size, pgprot_t prot); extern ssize_t copy_oldmem_page(unsigned long, char *, size_t, unsigned long, int); diff --git a/include/linux/efi.h b/include/linux/efi.h index 45cb4ffdea62..0949f9c7e872 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -92,6 +92,7 @@ typedef struct { #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ +#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ @@ -502,6 +503,10 @@ typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 attr, unsigned long data_size, void *data); +typedef efi_status_t +efi_set_variable_nonblocking_t(efi_char16_t *name, efi_guid_t *vendor, + u32 attr, unsigned long data_size, void *data); + typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); typedef void efi_reset_system_t (int reset_type, efi_status_t status, unsigned long data_size, efi_char16_t *data); @@ -821,6 +826,7 @@ extern struct efi { efi_get_variable_t *get_variable; efi_get_next_variable_t *get_next_variable; efi_set_variable_t *set_variable; + efi_set_variable_nonblocking_t *set_variable_nonblocking; efi_query_variable_info_t *query_variable_info; efi_update_capsule_t *update_capsule; efi_query_capsule_caps_t *query_capsule_caps; @@ -886,6 +892,13 @@ extern bool efi_poweroff_required(void); (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \ (md) = (void *)(md) + (m)->desc_size) +/* + * Format an EFI memory descriptor's type and attributes to a user-provided + * character buffer, as per snprintf(), and return the buffer. + */ +char * __init efi_md_typeattr_format(char *buf, size_t size, + const efi_memory_desc_t *md); + /** * efi_range_is_wc - check the WC bit on an address range * @start: starting kvirt address @@ -1034,6 +1047,7 @@ struct efivar_operations { efi_get_variable_t *get_variable; efi_get_next_variable_t *get_next_variable; efi_set_variable_t *set_variable; + efi_set_variable_nonblocking_t *set_variable_nonblocking; efi_query_variable_store_t *query_variable_store; }; @@ -1227,4 +1241,7 @@ efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, unsigned long *load_addr, unsigned long *load_size); +efi_status_t efi_parse_options(char *cmdline); + +bool efi_runtime_disabled(void); #endif /* _LINUX_EFI_H */ diff --git a/include/linux/fs.h b/include/linux/fs.h index a957d4366c24..4e41a4a331bb 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -223,6 +223,13 @@ typedef void (dio_iodone_t)(struct kiocb *iocb, loff_t offset, #define ATTR_TIMES_SET (1 << 16) /* + * Whiteout is represented by a char device. The following constants define the + * mode and device number to use. + */ +#define WHITEOUT_MODE 0 +#define WHITEOUT_DEV 0 + +/* * This is the Inode Attributes structure, used for notify_change(). It * uses the above definitions as flags, to know which values have changed. * Also, in this manner, a Filesystem can look at only the values it cares @@ -254,6 +261,12 @@ struct iattr { */ #include <linux/quota.h> +/* + * Maximum number of layers of fs stack. Needs to be limited to + * prevent kernel stack overflow + */ +#define FILESYSTEM_MAX_STACK_DEPTH 2 + /** * enum positive_aop_returns - aop return codes with specific semantics * @@ -1266,6 +1279,11 @@ struct super_block { struct list_lru s_dentry_lru ____cacheline_aligned_in_smp; struct list_lru s_inode_lru ____cacheline_aligned_in_smp; struct rcu_head rcu; + + /* + * Indicates how deep in a filesystem stack this SB is + */ + int s_stack_depth; }; extern struct timespec current_fs_time(struct super_block *sb); @@ -1398,6 +1416,7 @@ extern int vfs_link(struct dentry *, struct inode *, struct dentry *, struct ino extern int vfs_rmdir(struct inode *, struct dentry *); extern int vfs_unlink(struct inode *, struct dentry *, struct inode **); extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *, struct inode **, unsigned int); +extern int vfs_whiteout(struct inode *, struct dentry *); /* * VFS dentry helper functions. @@ -1528,6 +1547,9 @@ struct inode_operations { umode_t create_mode, int *opened); int (*tmpfile) (struct inode *, struct dentry *, umode_t); int (*set_acl)(struct inode *, struct posix_acl *, int); + + /* WARNING: probably going away soon, do not use! */ + int (*dentry_open)(struct dentry *, struct file *, const struct cred *); } ____cacheline_aligned; ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector, @@ -1625,6 +1647,9 @@ struct super_operations { #define IS_AUTOMOUNT(inode) ((inode)->i_flags & S_AUTOMOUNT) #define IS_NOSEC(inode) ((inode)->i_flags & S_NOSEC) +#define IS_WHITEOUT(inode) (S_ISCHR(inode->i_mode) && \ + (inode)->i_rdev == WHITEOUT_DEV) + /* * Inode state bits. Protected by inode->i_lock * @@ -2040,6 +2065,7 @@ extern struct file *file_open_name(struct filename *, int, umode_t); extern struct file *filp_open(const char *, int, umode_t); extern struct file *file_open_root(struct dentry *, struct vfsmount *, const char *, int); +extern int vfs_open(const struct path *, struct file *, const struct cred *); extern struct file * dentry_open(const struct path *, int, const struct cred *); extern int filp_close(struct file *, fl_owner_t id); @@ -2253,7 +2279,9 @@ extern sector_t bmap(struct inode *, sector_t); #endif extern int notify_change(struct dentry *, struct iattr *, struct inode **); extern int inode_permission(struct inode *, int); +extern int __inode_permission(struct inode *, int); extern int generic_permission(struct inode *, int); +extern int __check_sticky(struct inode *dir, struct inode *inode); static inline bool execute_ok(struct inode *inode) { @@ -2452,6 +2480,9 @@ extern ssize_t iter_file_splice_write(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int); extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe, struct file *out, loff_t *, size_t len, unsigned int flags); +extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out, + loff_t *opos, size_t len, unsigned int flags); + extern void file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping); @@ -2737,6 +2768,14 @@ static inline int is_sxid(umode_t mode) return (mode & S_ISUID) || ((mode & S_ISGID) && (mode & S_IXGRP)); } +static inline int check_sticky(struct inode *dir, struct inode *inode) +{ + if (!(dir->i_mode & S_ISVTX)) + return 0; + + return __check_sticky(dir, inode); +} + static inline void inode_has_no_xattr(struct inode *inode) { if (!is_sxid(inode->i_mode) && (inode->i_sb->s_flags & MS_NOSEC)) diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 40728cf1c452..3d770f5564b8 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -403,6 +403,7 @@ int vsscanf(const char *, const char *, va_list); extern int get_option(char **str, int *pint); extern char *get_options(const char *str, int nints, int *ints); extern unsigned long long memparse(const char *ptr, char **retptr); +extern bool parse_option_str(const char *str, const char *option); extern int core_kernel_text(unsigned long addr); extern int core_kernel_data(unsigned long addr); diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h index 6b06d378f3df..e465bb15912d 100644 --- a/include/linux/kgdb.h +++ b/include/linux/kgdb.h @@ -283,7 +283,7 @@ struct kgdb_io { extern struct kgdb_arch arch_kgdb_ops; -extern unsigned long __weak kgdb_arch_pc(int exception, struct pt_regs *regs); +extern unsigned long kgdb_arch_pc(int exception, struct pt_regs *regs); #ifdef CONFIG_SERIAL_KGDB_NMI extern int kgdb_register_nmi_console(void); diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 28be31f49250..ea53b04993f2 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1080,6 +1080,7 @@ void kvm_device_get(struct kvm_device *dev); void kvm_device_put(struct kvm_device *dev); struct kvm_device *kvm_device_from_filp(struct file *filp); int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type); +void kvm_unregister_device_ops(u32 type); extern struct kvm_device_ops kvm_mpic_ops; extern struct kvm_device_ops kvm_xics_ops; diff --git a/include/linux/memory.h b/include/linux/memory.h index bb7384e3c3d8..8b8d8d12348e 100644 --- a/include/linux/memory.h +++ b/include/linux/memory.h @@ -35,7 +35,7 @@ struct memory_block { }; int arch_get_memory_phys_device(unsigned long start_pfn); -unsigned long __weak memory_block_size_bytes(void); +unsigned long memory_block_size_bytes(void); /* These states are exposed to userspace as text strings in sysfs */ #define MEM_ONLINE (1<<0) /* exposed to userspace */ diff --git a/include/linux/mount.h b/include/linux/mount.h index 9262e4bf0cc3..c2c561dc0114 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -81,6 +81,9 @@ extern struct vfsmount *mntget(struct vfsmount *mnt); extern struct vfsmount *mnt_clone_internal(struct path *path); extern int __mnt_is_readonly(struct vfsmount *mnt); +struct path; +extern struct vfsmount *clone_private_mount(struct path *path); + struct file_system_type; extern struct vfsmount *vfs_kern_mount(struct file_system_type *type, int flags, const char *name, diff --git a/include/linux/oom.h b/include/linux/oom.h index 647395a1a550..e8d6e1058723 100644 --- a/include/linux/oom.h +++ b/include/linux/oom.h @@ -50,6 +50,9 @@ static inline bool oom_task_origin(const struct task_struct *p) extern unsigned long oom_badness(struct task_struct *p, struct mem_cgroup *memcg, const nodemask_t *nodemask, unsigned long totalpages); + +extern int oom_kills_count(void); +extern void note_oom_kill(void); extern void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, unsigned int points, unsigned long totalpages, struct mem_cgroup *memcg, nodemask_t *nodemask, diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h index 9ab4bf7c4646..636e82834506 100644 --- a/include/linux/pm_qos.h +++ b/include/linux/pm_qos.h @@ -15,6 +15,7 @@ enum { PM_QOS_CPU_DMA_LATENCY, PM_QOS_NETWORK_LATENCY, PM_QOS_NETWORK_THROUGHPUT, + PM_QOS_MEMORY_BANDWIDTH, /* insert new class ID */ PM_QOS_NUM_CLASSES, @@ -32,6 +33,7 @@ enum pm_qos_flags_status { #define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC) #define PM_QOS_NETWORK_THROUGHPUT_DEFAULT_VALUE 0 +#define PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE 0 #define PM_QOS_RESUME_LATENCY_DEFAULT_VALUE 0 #define PM_QOS_LATENCY_TOLERANCE_DEFAULT_VALUE 0 #define PM_QOS_LATENCY_TOLERANCE_NO_CONSTRAINT (-1) @@ -69,7 +71,8 @@ struct dev_pm_qos_request { enum pm_qos_type { PM_QOS_UNITIALIZED, PM_QOS_MAX, /* return the largest value */ - PM_QOS_MIN /* return the smallest value */ + PM_QOS_MIN, /* return the smallest value */ + PM_QOS_SUM /* return the sum */ }; /* diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index d347c805f923..f540b1496e2f 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -35,6 +35,8 @@ #ifndef __LINUX_REGULATOR_CONSUMER_H_ #define __LINUX_REGULATOR_CONSUMER_H_ +#include <linux/err.h> + struct device; struct notifier_block; struct regmap; diff --git a/include/linux/string.h b/include/linux/string.h index e6edfe51575a..2e22a2e58f3a 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -132,7 +132,7 @@ int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4); #endif extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos, - const void *from, size_t available); + const void *from, size_t available); /** * strstarts - does @str start with @prefix? @@ -144,7 +144,8 @@ static inline bool strstarts(const char *str, const char *prefix) return strncmp(str, prefix, strlen(prefix)) == 0; } -extern size_t memweight(const void *ptr, size_t bytes); +size_t memweight(const void *ptr, size_t bytes); +void memzero_explicit(void *s, size_t count); /** * kbasename - return the last part of a pathname. diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 0305cde21a74..ef90838b36a0 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -44,6 +44,10 @@ #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ ((long)t-2732+5)/10 : ((long)t-2732-5)/10) #define CELSIUS_TO_KELVIN(t) ((t)*10+2732) +#define DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(t, off) (((t) - (off)) * 100) +#define DECI_KELVIN_TO_MILLICELSIUS(t) DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(t, 2732) +#define MILLICELSIUS_TO_DECI_KELVIN_WITH_OFFSET(t, off) (((t) / 100) + (off)) +#define MILLICELSIUS_TO_DECI_KELVIN(t) MILLICELSIUS_TO_DECI_KELVIN_WITH_OFFSET(t, 2732) /* Adding event notification support elements */ #define THERMAL_GENL_FAMILY_NAME "thermal_event" diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h index 4f844c6b03ee..60beb5dc7977 100644 --- a/include/linux/uprobes.h +++ b/include/linux/uprobes.h @@ -98,11 +98,11 @@ struct uprobes_state { struct xol_area *xol_area; }; -extern int __weak set_swbp(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr); -extern int __weak set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr); -extern bool __weak is_swbp_insn(uprobe_opcode_t *insn); -extern bool __weak is_trap_insn(uprobe_opcode_t *insn); -extern unsigned long __weak uprobe_get_swbp_addr(struct pt_regs *regs); +extern int set_swbp(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr); +extern int set_orig_insn(struct arch_uprobe *aup, struct mm_struct *mm, unsigned long vaddr); +extern bool is_swbp_insn(uprobe_opcode_t *insn); +extern bool is_trap_insn(uprobe_opcode_t *insn); +extern unsigned long uprobe_get_swbp_addr(struct pt_regs *regs); extern unsigned long uprobe_get_trap_addr(struct pt_regs *regs); extern int uprobe_write_opcode(struct mm_struct *mm, unsigned long vaddr, uprobe_opcode_t); extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc); @@ -128,8 +128,8 @@ extern bool arch_uprobe_xol_was_trapped(struct task_struct *tsk); extern int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val, void *data); extern void arch_uprobe_abort_xol(struct arch_uprobe *aup, struct pt_regs *regs); extern unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr, struct pt_regs *regs); -extern bool __weak arch_uprobe_ignore(struct arch_uprobe *aup, struct pt_regs *regs); -extern void __weak arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr, +extern bool arch_uprobe_ignore(struct arch_uprobe *aup, struct pt_regs *regs); +extern void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr, void *src, unsigned long len); #else /* !CONFIG_UPROBES */ struct uprobes_state { diff --git a/include/trace/events/thermal.h b/include/trace/events/thermal.h new file mode 100644 index 000000000000..0f4f95d63c03 --- /dev/null +++ b/include/trace/events/thermal.h @@ -0,0 +1,83 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM thermal + +#if !defined(_TRACE_THERMAL_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_THERMAL_H + +#include <linux/thermal.h> +#include <linux/tracepoint.h> + +TRACE_EVENT(thermal_temperature, + + TP_PROTO(struct thermal_zone_device *tz), + + TP_ARGS(tz), + + TP_STRUCT__entry( + __string(thermal_zone, tz->type) + __field(int, id) + __field(int, temp_prev) + __field(int, temp) + ), + + TP_fast_assign( + __assign_str(thermal_zone, tz->type); + __entry->id = tz->id; + __entry->temp_prev = tz->last_temperature; + __entry->temp = tz->temperature; + ), + + TP_printk("thermal_zone=%s id=%d temp_prev=%d temp=%d", + __get_str(thermal_zone), __entry->id, __entry->temp_prev, + __entry->temp) +); + +TRACE_EVENT(cdev_update, + + TP_PROTO(struct thermal_cooling_device *cdev, unsigned long target), + + TP_ARGS(cdev, target), + + TP_STRUCT__entry( + __string(type, cdev->type) + __field(unsigned long, target) + ), + + TP_fast_assign( + __assign_str(type, cdev->type); + __entry->target = target; + ), + + TP_printk("type=%s target=%lu", __get_str(type), __entry->target) +); + +TRACE_EVENT(thermal_zone_trip, + + TP_PROTO(struct thermal_zone_device *tz, int trip, + enum thermal_trip_type trip_type), + + TP_ARGS(tz, trip, trip_type), + + TP_STRUCT__entry( + __string(thermal_zone, tz->type) + __field(int, id) + __field(int, trip) + __field(enum thermal_trip_type, trip_type) + ), + + TP_fast_assign( + __assign_str(thermal_zone, tz->type); + __entry->id = tz->id; + __entry->trip = trip; + __entry->trip_type = trip_type; + ), + + TP_printk("thermal_zone=%s id=%d trip=%d trip_type=%d", + __get_str(thermal_zone), __entry->id, __entry->trip, + __entry->trip_type) +); + +#endif /* _TRACE_THERMAL_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h index ca1a11bb4443..3735fa0a6784 100644 --- a/include/uapi/linux/fs.h +++ b/include/uapi/linux/fs.h @@ -37,6 +37,7 @@ #define RENAME_NOREPLACE (1 << 0) /* Don't overwrite target */ #define RENAME_EXCHANGE (1 << 1) /* Exchange source and dest */ +#define RENAME_WHITEOUT (1 << 2) /* Whiteout source */ struct fstrim_range { __u64 start; diff --git a/include/uapi/linux/v4l2-dv-timings.h b/include/uapi/linux/v4l2-dv-timings.h index 6a0764c89fcb..6c8f159e416e 100644 --- a/include/uapi/linux/v4l2-dv-timings.h +++ b/include/uapi/linux/v4l2-dv-timings.h @@ -21,8 +21,17 @@ #ifndef _V4L2_DV_TIMINGS_H #define _V4L2_DV_TIMINGS_H +#if __GNUC__ < 4 || (__GNUC__ == 4 && (__GNUC_MINOR__ < 6)) +/* Sadly gcc versions older than 4.6 have a bug in how they initialize + anonymous unions where they require additional curly brackets. + This violates the C1x standard. This workaround adds the curly brackets + if needed. */ #define V4L2_INIT_BT_TIMINGS(_width, args...) \ { .bt = { _width , ## args } } +#else +#define V4L2_INIT_BT_TIMINGS(_width, args...) \ + .bt = { _width , ## args } +#endif /* CEA-861-E timings (i.e. standard HDTV timings) */ diff --git a/kernel/freezer.c b/kernel/freezer.c index aa6a8aadb911..a8900a3bc27a 100644 --- a/kernel/freezer.c +++ b/kernel/freezer.c @@ -42,6 +42,9 @@ bool freezing_slow_path(struct task_struct *p) if (p->flags & (PF_NOFREEZE | PF_SUSPEND_TASK)) return false; + if (test_thread_flag(TIF_MEMDIE)) + return false; + if (pm_nosig_freezing || cgroup_freezing(p)) return true; @@ -147,12 +150,6 @@ void __thaw_task(struct task_struct *p) { unsigned long flags; - /* - * Clear freezing and kick @p if FROZEN. Clearing is guaranteed to - * be visible to @p as waking up implies wmb. Waking up inside - * freezer_lock also prevents wakeups from leaking outside - * refrigerator. - */ spin_lock_irqsave(&freezer_lock, flags); if (frozen(p)) wake_up_process(p); diff --git a/kernel/power/process.c b/kernel/power/process.c index 7b323221b9ee..5a6ec8678b9a 100644 --- a/kernel/power/process.c +++ b/kernel/power/process.c @@ -46,13 +46,13 @@ static int try_to_freeze_tasks(bool user_only) while (true) { todo = 0; read_lock(&tasklist_lock); - do_each_thread(g, p) { + for_each_process_thread(g, p) { if (p == current || !freeze_task(p)) continue; if (!freezer_should_skip(p)) todo++; - } while_each_thread(g, p); + } read_unlock(&tasklist_lock); if (!user_only) { @@ -93,11 +93,11 @@ static int try_to_freeze_tasks(bool user_only) if (!wakeup) { read_lock(&tasklist_lock); - do_each_thread(g, p) { + for_each_process_thread(g, p) { if (p != current && !freezer_should_skip(p) && freezing(p) && !frozen(p)) sched_show_task(p); - } while_each_thread(g, p); + } read_unlock(&tasklist_lock); } } else { @@ -108,6 +108,30 @@ static int try_to_freeze_tasks(bool user_only) return todo ? -EBUSY : 0; } +static bool __check_frozen_processes(void) +{ + struct task_struct *g, *p; + + for_each_process_thread(g, p) + if (p != current && !freezer_should_skip(p) && !frozen(p)) + return false; + + return true; +} + +/* + * Returns true if all freezable tasks (except for current) are frozen already + */ +static bool check_frozen_processes(void) +{ + bool ret; + + read_lock(&tasklist_lock); + ret = __check_frozen_processes(); + read_unlock(&tasklist_lock); + return ret; +} + /** * freeze_processes - Signal user space processes to enter the refrigerator. * The current thread will not be frozen. The same process that calls @@ -118,6 +142,7 @@ static int try_to_freeze_tasks(bool user_only) int freeze_processes(void) { int error; + int oom_kills_saved; error = __usermodehelper_disable(UMH_FREEZING); if (error) @@ -132,11 +157,25 @@ int freeze_processes(void) pm_wakeup_clear(); printk("Freezing user space processes ... "); pm_freezing = true; + oom_kills_saved = oom_kills_count(); error = try_to_freeze_tasks(true); if (!error) { - printk("done."); __usermodehelper_set_disable_depth(UMH_DISABLED); oom_killer_disable(); + + /* + * There might have been an OOM kill while we were + * freezing tasks and the killed task might be still + * on the way out so we have to double check for race. + */ + if (oom_kills_count() != oom_kills_saved && + !check_frozen_processes()) { + __usermodehelper_set_disable_depth(UMH_ENABLED); + printk("OOM in progress."); + error = -EBUSY; + } else { + printk("done."); + } } printk("\n"); BUG_ON(in_atomic()); @@ -191,11 +230,11 @@ void thaw_processes(void) thaw_workqueues(); read_lock(&tasklist_lock); - do_each_thread(g, p) { + for_each_process_thread(g, p) { /* No other threads should have PF_SUSPEND_TASK set */ WARN_ON((p != curr) && (p->flags & PF_SUSPEND_TASK)); __thaw_task(p); - } while_each_thread(g, p); + } read_unlock(&tasklist_lock); WARN_ON(!(curr->flags & PF_SUSPEND_TASK)); @@ -218,10 +257,10 @@ void thaw_kernel_threads(void) thaw_workqueues(); read_lock(&tasklist_lock); - do_each_thread(g, p) { + for_each_process_thread(g, p) { if (p->flags & (PF_KTHREAD | PF_WQ_WORKER)) __thaw_task(p); - } while_each_thread(g, p); + } read_unlock(&tasklist_lock); schedule(); diff --git a/kernel/power/qos.c b/kernel/power/qos.c index 884b77058864..5f4c006c4b1e 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -105,11 +105,27 @@ static struct pm_qos_object network_throughput_pm_qos = { }; +static BLOCKING_NOTIFIER_HEAD(memory_bandwidth_notifier); +static struct pm_qos_constraints memory_bw_constraints = { + .list = PLIST_HEAD_INIT(memory_bw_constraints.list), + .target_value = PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE, + .default_value = PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE, + .no_constraint_value = PM_QOS_MEMORY_BANDWIDTH_DEFAULT_VALUE, + .type = PM_QOS_SUM, + .notifiers = &memory_bandwidth_notifier, +}; +static struct pm_qos_object memory_bandwidth_pm_qos = { + .constraints = &memory_bw_constraints, + .name = "memory_bandwidth", +}; + + static struct pm_qos_object *pm_qos_array[] = { &null_pm_qos, &cpu_dma_pm_qos, &network_lat_pm_qos, - &network_throughput_pm_qos + &network_throughput_pm_qos, + &memory_bandwidth_pm_qos, }; static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf, @@ -130,6 +146,9 @@ static const struct file_operations pm_qos_power_fops = { /* unlocked internal variant */ static inline int pm_qos_get_value(struct pm_qos_constraints *c) { + struct plist_node *node; + int total_value = 0; + if (plist_head_empty(&c->list)) return c->no_constraint_value; @@ -140,6 +159,12 @@ static inline int pm_qos_get_value(struct pm_qos_constraints *c) case PM_QOS_MAX: return plist_last(&c->list)->prio; + case PM_QOS_SUM: + plist_for_each(node, &c->list) + total_value += node->prio; + + return total_value; + default: /* runtime check for not using enum */ BUG(); diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index fb186b9ddf51..31c90fec4158 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1925,8 +1925,16 @@ ftrace_find_tramp_ops_curr(struct dyn_ftrace *rec) * when we are adding another op to the rec or removing the * current one. Thus, if the op is being added, we can * ignore it because it hasn't attached itself to the rec - * yet. That means we just need to find the op that has a - * trampoline and is not beeing added. + * yet. + * + * If an ops is being modified (hooking to different functions) + * then we don't care about the new functions that are being + * added, just the old ones (that are probably being removed). + * + * If we are adding an ops to a function that already is using + * a trampoline, it needs to be removed (trampolines are only + * for single ops connected), then an ops that is not being + * modified also needs to be checked. */ do_for_each_ftrace_op(op, ftrace_ops_list) { @@ -1940,17 +1948,23 @@ ftrace_find_tramp_ops_curr(struct dyn_ftrace *rec) if (op->flags & FTRACE_OPS_FL_ADDING) continue; + /* - * If the ops is not being added and has a trampoline, - * then it must be the one that we want! + * If the ops is being modified and is in the old + * hash, then it is probably being removed from this + * function. */ - if (hash_contains_ip(ip, op->func_hash)) - return op; - - /* If the ops is being modified, it may be in the old hash. */ if ((op->flags & FTRACE_OPS_FL_MODIFYING) && hash_contains_ip(ip, &op->old_hash)) return op; + /* + * If the ops is not being added or modified, and it's + * in its normal filter hash, then this must be the one + * we want! + */ + if (!(op->flags & FTRACE_OPS_FL_MODIFYING) && + hash_contains_ip(ip, op->func_hash)) + return op; } while_for_each_ftrace_op(op); @@ -2293,10 +2307,13 @@ static void ftrace_run_update_code(int command) FTRACE_WARN_ON(ret); } -static void ftrace_run_modify_code(struct ftrace_ops *ops, int command) +static void ftrace_run_modify_code(struct ftrace_ops *ops, int command, + struct ftrace_hash *old_hash) { ops->flags |= FTRACE_OPS_FL_MODIFYING; + ops->old_hash.filter_hash = old_hash; ftrace_run_update_code(command); + ops->old_hash.filter_hash = NULL; ops->flags &= ~FTRACE_OPS_FL_MODIFYING; } @@ -3340,7 +3357,7 @@ static struct ftrace_ops trace_probe_ops __read_mostly = static int ftrace_probe_registered; -static void __enable_ftrace_function_probe(void) +static void __enable_ftrace_function_probe(struct ftrace_hash *old_hash) { int ret; int i; @@ -3348,7 +3365,8 @@ static void __enable_ftrace_function_probe(void) if (ftrace_probe_registered) { /* still need to update the function call sites */ if (ftrace_enabled) - ftrace_run_modify_code(&trace_probe_ops, FTRACE_UPDATE_CALLS); + ftrace_run_modify_code(&trace_probe_ops, FTRACE_UPDATE_CALLS, + old_hash); return; } @@ -3477,13 +3495,14 @@ register_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops, } while_for_each_ftrace_rec(); ret = ftrace_hash_move(&trace_probe_ops, 1, orig_hash, hash); + + __enable_ftrace_function_probe(old_hash); + if (!ret) free_ftrace_hash_rcu(old_hash); else count = ret; - __enable_ftrace_function_probe(); - out_unlock: mutex_unlock(&ftrace_lock); out: @@ -3764,10 +3783,11 @@ ftrace_match_addr(struct ftrace_hash *hash, unsigned long ip, int remove) return add_hash_entry(hash, ip); } -static void ftrace_ops_update_code(struct ftrace_ops *ops) +static void ftrace_ops_update_code(struct ftrace_ops *ops, + struct ftrace_hash *old_hash) { if (ops->flags & FTRACE_OPS_FL_ENABLED && ftrace_enabled) - ftrace_run_modify_code(ops, FTRACE_UPDATE_CALLS); + ftrace_run_modify_code(ops, FTRACE_UPDATE_CALLS, old_hash); } static int @@ -3813,7 +3833,7 @@ ftrace_set_hash(struct ftrace_ops *ops, unsigned char *buf, int len, old_hash = *orig_hash; ret = ftrace_hash_move(ops, enable, orig_hash, hash); if (!ret) { - ftrace_ops_update_code(ops); + ftrace_ops_update_code(ops, old_hash); free_ftrace_hash_rcu(old_hash); } mutex_unlock(&ftrace_lock); @@ -4058,7 +4078,7 @@ int ftrace_regex_release(struct inode *inode, struct file *file) ret = ftrace_hash_move(iter->ops, filter_hash, orig_hash, iter->hash); if (!ret) { - ftrace_ops_update_code(iter->ops); + ftrace_ops_update_code(iter->ops, old_hash); free_ftrace_hash_rcu(old_hash); } mutex_unlock(&ftrace_lock); diff --git a/lib/cmdline.c b/lib/cmdline.c index 76a712e6e20e..8f13cf73c2ec 100644 --- a/lib/cmdline.c +++ b/lib/cmdline.c @@ -160,3 +160,32 @@ unsigned long long memparse(const char *ptr, char **retptr) return ret; } EXPORT_SYMBOL(memparse); + +/** + * parse_option_str - Parse a string and check an option is set or not + * @str: String to be parsed + * @option: option name + * + * This function parses a string containing a comma-separated list of + * strings like a=b,c. + * + * Return true if there's such option in the string, or return false. + */ +bool parse_option_str(const char *str, const char *option) +{ + while (*str) { + if (!strncmp(str, option, strlen(option))) { + str += strlen(option); + if (!*str || *str == ',') + return true; + } + + while (*str && *str != ',') + str++; + + if (*str == ',') + str++; + } + + return false; +} diff --git a/lib/string.c b/lib/string.c index 2fc20aa06f84..10063300b830 100644 --- a/lib/string.c +++ b/lib/string.c @@ -598,6 +598,22 @@ void *memset(void *s, int c, size_t count) EXPORT_SYMBOL(memset); #endif +/** + * memzero_explicit - Fill a region of memory (e.g. sensitive + * keying data) with 0s. + * @s: Pointer to the start of the area. + * @count: The size of the area. + * + * memzero_explicit() doesn't need an arch-specific version as + * it just invokes the one of memset() implicitly. + */ +void memzero_explicit(void *s, size_t count) +{ + memset(s, 0, count); + OPTIMIZER_HIDE_VAR(s); +} +EXPORT_SYMBOL(memzero_explicit); + #ifndef __HAVE_ARCH_MEMCPY /** * memcpy - Copy one area of memory to another diff --git a/mm/memory.c b/mm/memory.c index 1cc6bfbd872e..3e503831e042 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1147,6 +1147,7 @@ again: print_bad_pte(vma, addr, ptent, page); if (unlikely(!__tlb_remove_page(tlb, page))) { force_flush = 1; + addr += PAGE_SIZE; break; } continue; diff --git a/mm/oom_kill.c b/mm/oom_kill.c index bbf405a3a18f..5340f6b91312 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -404,6 +404,23 @@ static void dump_header(struct task_struct *p, gfp_t gfp_mask, int order, dump_tasks(memcg, nodemask); } +/* + * Number of OOM killer invocations (including memcg OOM killer). + * Primarily used by PM freezer to check for potential races with + * OOM killed frozen task. + */ +static atomic_t oom_kills = ATOMIC_INIT(0); + +int oom_kills_count(void) +{ + return atomic_read(&oom_kills); +} + +void note_oom_kill(void) +{ + atomic_inc(&oom_kills); +} + #define K(x) ((x) << (PAGE_SHIFT-10)) /* * Must be called while holding a reference to p, which will be released upon diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 736d8e1b6381..9cd36b822444 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2252,6 +2252,14 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order, } /* + * PM-freezer should be notified that there might be an OOM killer on + * its way to kill and wake somebody up. This is too early and we might + * end up not killing anything but false positives are acceptable. + * See freeze_processes. + */ + note_oom_kill(); + + /* * Go through the zonelist yet one more time, keep very high watermark * here, this is only to catch a parallel oom killing, we must fail if * we're still under heavy pressure. diff --git a/mm/shmem.c b/mm/shmem.c index cd6fc7590e54..185836ba53ef 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2345,6 +2345,32 @@ static int shmem_exchange(struct inode *old_dir, struct dentry *old_dentry, stru return 0; } +static int shmem_whiteout(struct inode *old_dir, struct dentry *old_dentry) +{ + struct dentry *whiteout; + int error; + + whiteout = d_alloc(old_dentry->d_parent, &old_dentry->d_name); + if (!whiteout) + return -ENOMEM; + + error = shmem_mknod(old_dir, whiteout, + S_IFCHR | WHITEOUT_MODE, WHITEOUT_DEV); + dput(whiteout); + if (error) + return error; + + /* + * Cheat and hash the whiteout while the old dentry is still in + * place, instead of playing games with FS_RENAME_DOES_D_MOVE. + * + * d_lookup() will consistently find one of them at this point, + * not sure which one, but that isn't even important. + */ + d_rehash(whiteout); + return 0; +} + /* * The VFS layer already does all the dentry stuff for rename, * we just have to decrement the usage count for the target if @@ -2356,7 +2382,7 @@ static int shmem_rename2(struct inode *old_dir, struct dentry *old_dentry, struc struct inode *inode = old_dentry->d_inode; int they_are_dirs = S_ISDIR(inode->i_mode); - if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) + if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT)) return -EINVAL; if (flags & RENAME_EXCHANGE) @@ -2365,6 +2391,14 @@ static int shmem_rename2(struct inode *old_dir, struct dentry *old_dentry, struc if (!simple_empty(new_dentry)) return -ENOTEMPTY; + if (flags & RENAME_WHITEOUT) { + int error; + + error = shmem_whiteout(old_dir, old_dentry); + if (error) + return error; + } + if (new_dentry->d_inode) { (void) shmem_unlink(new_dir, new_dentry); if (they_are_dirs) { diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index bfe1cf6b492f..166d59cdc86b 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -781,16 +781,15 @@ static int snd_pcm_action_group(struct action_ops *ops, { struct snd_pcm_substream *s = NULL; struct snd_pcm_substream *s1; - int res = 0; + int res = 0, depth = 1; snd_pcm_group_for_each_entry(s, substream) { if (do_lock && s != substream) { if (s->pcm->nonatomic) - mutex_lock_nested(&s->self_group.mutex, - SINGLE_DEPTH_NESTING); + mutex_lock_nested(&s->self_group.mutex, depth); else - spin_lock_nested(&s->self_group.lock, - SINGLE_DEPTH_NESTING); + spin_lock_nested(&s->self_group.lock, depth); + depth++; } res = ops->pre_action(s, state); if (res < 0) @@ -906,8 +905,7 @@ static int snd_pcm_action_lock_mutex(struct action_ops *ops, down_read(&snd_pcm_link_rwsem); if (snd_pcm_stream_linked(substream)) { mutex_lock(&substream->group->mutex); - mutex_lock_nested(&substream->self_group.mutex, - SINGLE_DEPTH_NESTING); + mutex_lock(&substream->self_group.mutex); res = snd_pcm_action_group(ops, substream, state, 1); mutex_unlock(&substream->self_group.mutex); mutex_unlock(&substream->group->mutex); @@ -3311,7 +3309,7 @@ static const struct vm_operations_struct snd_pcm_vm_ops_data_fault = { #ifndef ARCH_HAS_DMA_MMAP_COHERENT /* This should be defined / handled globally! */ -#ifdef CONFIG_ARM +#if defined(CONFIG_ARM) || defined(CONFIG_ARM64) #define ARCH_HAS_DMA_MMAP_COHERENT #endif #endif diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index 7eb44e78e141..62658f2f8c9f 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -419,7 +419,7 @@ struct snd_hda_pin_quirk { .subvendor = _subvendor,\ .name = _name,\ .value = _value,\ - .pins = (const struct hda_pintbl[]) { _pins } \ + .pins = (const struct hda_pintbl[]) { _pins, {0, 0}} \ } #else @@ -427,7 +427,7 @@ struct snd_hda_pin_quirk { { .codec = _codec,\ .subvendor = _subvendor,\ .value = _value,\ - .pins = (const struct hda_pintbl[]) { _pins } \ + .pins = (const struct hda_pintbl[]) { _pins, {0, 0}} \ } #endif diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 39862e98551c..9dc9cf8c90e9 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1583,19 +1583,22 @@ static bool hdmi_present_sense(struct hdmi_spec_per_pin *per_pin, int repoll) } } - if (pin_eld->eld_valid && !eld->eld_valid) { - update_eld = true; + if (pin_eld->eld_valid != eld->eld_valid) eld_changed = true; - } + + if (pin_eld->eld_valid && !eld->eld_valid) + update_eld = true; + if (update_eld) { bool old_eld_valid = pin_eld->eld_valid; pin_eld->eld_valid = eld->eld_valid; - eld_changed = pin_eld->eld_size != eld->eld_size || + if (pin_eld->eld_size != eld->eld_size || memcmp(pin_eld->eld_buffer, eld->eld_buffer, - eld->eld_size) != 0; - if (eld_changed) + eld->eld_size) != 0) { memcpy(pin_eld->eld_buffer, eld->eld_buffer, eld->eld_size); + eld_changed = true; + } pin_eld->eld_size = eld->eld_size; pin_eld->info = eld->info; diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index bc86c36b4bfa..34b7bdb510c7 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -2884,6 +2884,9 @@ static void alc283_shutup(struct hda_codec *codec) alc_write_coef_idx(codec, 0x43, 0x9004); + /*depop hp during suspend*/ + alc_write_coef_idx(codec, 0x06, 0x2100); + snd_hda_codec_write(codec, hp_pin, 0, AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE); @@ -5610,9 +5613,9 @@ static void alc662_led_gpio1_mute_hook(void *private_data, int enabled) unsigned int oldval = spec->gpio_led; if (enabled) - spec->gpio_led &= ~0x01; - else spec->gpio_led |= 0x01; + else + spec->gpio_led &= ~0x01; if (spec->gpio_led != oldval) snd_hda_codec_write(codec, 0x01, 0, AC_VERB_SET_GPIO_DATA, spec->gpio_led); diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 223c47b33ba3..c657752a420c 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -385,6 +385,36 @@ YAMAHA_DEVICE(0x105d, NULL), } }, { + USB_DEVICE(0x0499, 0x1509), + .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) { + /* .vendor_name = "Yamaha", */ + /* .product_name = "Steinberg UR22", */ + .ifnum = QUIRK_ANY_INTERFACE, + .type = QUIRK_COMPOSITE, + .data = (const struct snd_usb_audio_quirk[]) { + { + .ifnum = 1, + .type = QUIRK_AUDIO_STANDARD_INTERFACE + }, + { + .ifnum = 2, + .type = QUIRK_AUDIO_STANDARD_INTERFACE + }, + { + .ifnum = 3, + .type = QUIRK_MIDI_YAMAHA + }, + { + .ifnum = 4, + .type = QUIRK_IGNORE_INTERFACE + }, + { + .ifnum = -1 + } + } + } +}, +{ USB_DEVICE(0x0499, 0x150a), .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) { /* .vendor_name = "Yamaha", */ diff --git a/tools/power/acpi/os_specific/service_layers/osunixxf.c b/tools/power/acpi/os_specific/service_layers/osunixxf.c index 60b58cd18410..7ccb073f8316 100644 --- a/tools/power/acpi/os_specific/service_layers/osunixxf.c +++ b/tools/power/acpi/os_specific/service_layers/osunixxf.c @@ -122,6 +122,14 @@ static void os_enter_line_edit_mode(void) { struct termios local_term_attributes; + term_attributes_were_set = 0; + + /* STDIN must be a terminal */ + + if (!isatty(STDIN_FILENO)) { + return; + } + /* Get and keep the original attributes */ if (tcgetattr(STDIN_FILENO, &original_term_attributes)) { diff --git a/tools/power/acpi/tools/acpidump/apdump.c b/tools/power/acpi/tools/acpidump/apdump.c index 53cee781e24e..24d32968802d 100644 --- a/tools/power/acpi/tools/acpidump/apdump.c +++ b/tools/power/acpi/tools/acpidump/apdump.c @@ -146,7 +146,7 @@ u32 ap_get_table_length(struct acpi_table_header *table) if (ACPI_VALIDATE_RSDP_SIG(table->signature)) { rsdp = ACPI_CAST_PTR(struct acpi_table_rsdp, table); - return (rsdp->length); + return (acpi_tb_get_rsdp_length(rsdp)); } /* Normal ACPI table */ diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c index e51d9f9b995f..c1e6ae989a43 100644 --- a/virt/kvm/iommu.c +++ b/virt/kvm/iommu.c @@ -43,13 +43,13 @@ static void kvm_iommu_put_pages(struct kvm *kvm, gfn_t base_gfn, unsigned long npages); static pfn_t kvm_pin_pages(struct kvm_memory_slot *slot, gfn_t gfn, - unsigned long size) + unsigned long npages) { gfn_t end_gfn; pfn_t pfn; pfn = gfn_to_pfn_memslot(slot, gfn); - end_gfn = gfn + (size >> PAGE_SHIFT); + end_gfn = gfn + npages; gfn += 1; if (is_error_noslot_pfn(pfn)) @@ -119,7 +119,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot) * Pin all pages we are about to map in memory. This is * important because we unmap and unpin in 4kb steps later. */ - pfn = kvm_pin_pages(slot, gfn, page_size); + pfn = kvm_pin_pages(slot, gfn, page_size >> PAGE_SHIFT); if (is_error_noslot_pfn(pfn)) { gfn += 1; continue; @@ -131,7 +131,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot) if (r) { printk(KERN_ERR "kvm_iommu_map_address:" "iommu failed to map pfn=%llx\n", pfn); - kvm_unpin_pages(kvm, pfn, page_size); + kvm_unpin_pages(kvm, pfn, page_size >> PAGE_SHIFT); goto unmap_pages; } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 384eaa7b02fa..25ffac9e947d 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2354,6 +2354,12 @@ int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type) return 0; } +void kvm_unregister_device_ops(u32 type) +{ + if (kvm_device_ops_table[type] != NULL) + kvm_device_ops_table[type] = NULL; +} + static int kvm_ioctl_create_device(struct kvm *kvm, struct kvm_create_device *cd) { @@ -3328,5 +3334,6 @@ void kvm_exit(void) kvm_arch_exit(); kvm_irqfd_exit(); free_cpumask_var(cpus_hardware_enabled); + kvm_vfio_ops_exit(); } EXPORT_SYMBOL_GPL(kvm_exit); diff --git a/virt/kvm/vfio.c b/virt/kvm/vfio.c index 281e7cf2b8e5..620e37f741b8 100644 --- a/virt/kvm/vfio.c +++ b/virt/kvm/vfio.c @@ -283,3 +283,8 @@ int kvm_vfio_ops_init(void) { return kvm_register_device_ops(&kvm_vfio_ops, KVM_DEV_TYPE_VFIO); } + +void kvm_vfio_ops_exit(void) +{ + kvm_unregister_device_ops(KVM_DEV_TYPE_VFIO); +} diff --git a/virt/kvm/vfio.h b/virt/kvm/vfio.h index 92eac75d6b62..ab88c7dc0514 100644 --- a/virt/kvm/vfio.h +++ b/virt/kvm/vfio.h @@ -3,11 +3,15 @@ #ifdef CONFIG_KVM_VFIO int kvm_vfio_ops_init(void); +void kvm_vfio_ops_exit(void); #else static inline int kvm_vfio_ops_init(void) { return 0; } +static inline void kvm_vfio_ops_exit(void) +{ +} #endif #endif |