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2019-09-27ptp: correctly disable flags on old ioctlsJacob Keller1-2/+2
Commit 415606588c61 ("PTP: introduce new versions of IOCTLs", 2019-09-13) introduced new versions of the PTP ioctls which actually validate that the flags are acceptable values. As part of this, it cleared the flags value using a bitwise and+negation, in an attempt to prevent the old ioctl from accidentally enabling new features. This is incorrect for a couple of reasons. First, it results in accidentally preventing previously working flags on the request ioctl. By clearing the "valid" flags, we now no longer allow setting the enable, rising edge, or falling edge flags. Second, if we add new additional flags in the future, they must not be set by the old ioctl. (Since the flag wasn't checked before, we could potentially break userspace programs which sent garbage flag data. The correct way to resolve this is to check for and clear all but the originally valid flags. Create defines indicating which flags are correctly checked and interpreted by the original ioctls. Use these to clear any bits which will not be correctly interpreted by the original ioctls. In the future, new flags must be added to the VALID_FLAGS macros, but *not* to the V1_VALID_FLAGS macros. In this way, new features may be exposed over the v2 ioctls, but without breaking previous userspace which happened to not clear the flags value properly. The old ioctl will continue to behave the same way, while the new ioctl gains the benefit of using the flags fields. Cc: Richard Cochran <richardcochran@gmail.com> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Christopher Hall <christopher.s.hall@intel.com> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-13PTP: introduce new versions of IOCTLsFelipe Balbi1-0/+63
The current version of the IOCTL have a small problem which prevents us from extending the API by making use of reserved fields. In these new IOCTLs, we are now making sure that flags and rsv fields are zero which will allow us to extend the API in the future. Reviewed-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-25ptp: ptp_dte: remove redundant dev_err messageDing Xiang1-4/+1
devm_ioremap_resource already contains error message, so remove the redundant dev_err message Signed-off-by: Ding Xiang <dingxiang@cmss.chinamobile.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-15ptp: add QorIQ PTP support for DPAA2Yangbo Lu1-1/+1
This patch is to add QorIQ PTP support for DPAA2. Although dpaa2-ptp.c driver is a fsl_mc_driver which is using MC APIs for register accessing, it's same IP block with eTSEC/DPAA/ENETC 1588 timer. We will convert to reuse ptp_qoriq driver by using register ioremap and dropping related MC APIs. Also allow to compile ptp_qoriq with COMPILE_TEST. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-06-13ptp: ptp_clock: Publish scaled_ppm_to_ppbShalom Toledo1-1/+2
Publish scaled_ppm_to_ppb to allow drivers to use it. Signed-off-by: Shalom Toledo <shalomt@mellanox.com> Reviewed-by: Petr Machata <petrm@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 167Thomas Gleixner1-13/+1
Based on 1 normalized pattern(s): 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 of the license 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 you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 83 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.021731668@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157Thomas Gleixner1-11/+1
Based on 3 normalized pattern(s): 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 either version 2 of the license or at your option any later version 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 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 either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] 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 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 either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61Thomas Gleixner6-84/+6
Based on 1 normalized pattern(s): 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 either version 2 of the license or at your option any later version 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 you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc) Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner1-0/+1
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-09ptp_qoriq: fix NULL access if ptp dt node missingClaudiu Manoil1-0/+3
Make sure ptp dt node exists before accessing it in case of NULL pointer call trace. Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com> Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-05Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-1/+1
Pull year 2038 updates from Thomas Gleixner: "Another round of changes to make the kernel ready for 2038. After lots of preparatory work this is the first set of syscalls which are 2038 safe: 403 clock_gettime64 404 clock_settime64 405 clock_adjtime64 406 clock_getres_time64 407 clock_nanosleep_time64 408 timer_gettime64 409 timer_settime64 410 timerfd_gettime64 411 timerfd_settime64 412 utimensat_time64 413 pselect6_time64 414 ppoll_time64 416 io_pgetevents_time64 417 recvmmsg_time64 418 mq_timedsend_time64 419 mq_timedreceiv_time64 420 semtimedop_time64 421 rt_sigtimedwait_time64 422 futex_time64 423 sched_rr_get_interval_time64 The syscall numbers are identical all over the architectures" * 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) riscv: Use latest system call ABI checksyscalls: fix up mq_timedreceive and stat exceptions unicore32: Fix __ARCH_WANT_STAT64 definition asm-generic: Make time32 syscall numbers optional asm-generic: Drop getrlimit and setrlimit syscalls from default list 32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option compat ABI: use non-compat openat and open_by_handle_at variants y2038: add 64-bit time_t syscalls to all 32-bit architectures y2038: rename old time and utime syscalls y2038: remove struct definition redirects y2038: use time32 syscall names on 32-bit syscalls: remove obsolete __IGNORE_ macros y2038: syscalls: rename y2038 compat syscalls x86/x32: use time64 versions of sigtimedwait and recvmmsg timex: change syscalls to use struct __kernel_timex timex: use __kernel_timex internally sparc64: add custom adjtimex/clock_adjtime functions time: fix sys_timer_settime prototype time: Add struct __kernel_timex time: make adjtime compat handling available for 32 bit ...
2019-02-19ptp_qoriq: don't pass a large struct by value but instead pass it by referenceColin Ian King1-3/+3
Passing the struct ptp_clock_info caps by parameter is passing over 130 bytes of data by value on the stack. Optimize this by passing it by reference instead. Also shinks the object code size: Before: text data bss dec hex filename 12596 2160 64 14820 39e4 drivers/ptp/ptp_qoriq.o After: text data bss dec hex filename 12567 2160 64 14791 39c7 drivers/ptp/ptp_qoriq.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12ptp: add QorIQ PTP support for ENETCYangbo Lu1-1/+1
This patch is to add QorIQ PTP support for ENETC. ENETC PTP driver which is a PCI driver for same 1588 timer IP block will reuse QorIQ PTP driver. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12ptp_qoriq: fix register memory mapYangbo Lu1-5/+6
The 1588 timer on eTSEC Ethernet controller uses different register memory map with DPAA Ethernet controller. Now the new ENETC Ethernet controller uses same reigster memory map with DPAA. To support ENETC, let's use register memory map of DPAA/ENETC in default. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12ptp_qoriq: add little enadian supportYangbo Lu2-36/+45
There is QorIQ 1588 timer IP block on the new ENETC Ethernet controller. However it uses little endian mode which is different with before. This patch is to add little endian support for the driver by using "little-endian" dts node property. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12ptp_qoriq: convert to use ptp_qoriq_init/freeYangbo Lu1-67/+77
Moved QorIQ PTP clock initialization/free into new functions ptp_qoriq_init()/ptp_qoriq_free(). These functions could also be reused by ENETC PTP drvier which is a PCI driver for same 1588 timer IP block. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12ptp_qoriq: make ptp operations globalYangbo Lu1-11/+16
This patch is to make functions of ptp operations global, so that ENETC PTP driver which is a PCI driver for same 1588 timer IP block could reuse them. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-12ptp_qoriq: make structure/function names more consistentYangbo Lu2-162/+162
Strings containing "ptp_qoriq" or "qoriq_ptp" which were used for structure/function names were complained by users. Let's just use the unique "ptp_qoriq" to make these names more consistent. This patch is just to unify the names using "ptp_qoriq". It hasn't changed any functions. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-02-10Merge tag 'y2038-new-syscalls' of git://git.kernel.org:/pub/scm/linux/kernel/git/arnd/playground into timers/2038Thomas Gleixner1-1/+1
Pull y2038 - time64 system calls from Arnd Bergmann: This series finally gets us to the point of having system calls with 64-bit time_t on all architectures, after a long time of incremental preparation patches. There was actually one conversion that I missed during the summer, i.e. Deepa's timex series, which I now updated based the 5.0-rc1 changes and review comments. The following system calls are now added on all 32-bit architectures using the same system call numbers: 403 clock_gettime64 404 clock_settime64 405 clock_adjtime64 406 clock_getres_time64 407 clock_nanosleep_time64 408 timer_gettime64 409 timer_settime64 410 timerfd_gettime64 411 timerfd_settime64 412 utimensat_time64 413 pselect6_time64 414 ppoll_time64 416 io_pgetevents_time64 417 recvmmsg_time64 418 mq_timedsend_time64 419 mq_timedreceiv_time64 420 semtimedop_time64 421 rt_sigtimedwait_time64 422 futex_time64 423 sched_rr_get_interval_time64 Each one of these corresponds directly to an existing system call that includes a 'struct timespec' argument, or a structure containing a timespec or (in case of clock_adjtime) timeval. Not included here are new versions of getitimer/setitimer and getrusage/waitid, which are planned for the future but only needed to make a consistent API rather than for correct operation beyond y2038. These four system calls are based on 'timeval', and it has not been finally decided what the replacement kernel interface will use instead. So far, I have done a lot of build testing across most architectures, which has found a number of bugs. Runtime testing so far included testing LTP on 32-bit ARM with the existing system calls, to ensure we do not regress for existing binaries, and a test with a 32-bit x86 build of LTP against a modified version of the musl C library that has been adapted to the new system call interface [3]. This library can be used for testing on all architectures supported by musl-1.1.21, but it is not how the support is getting integrated into the official musl release. Official musl support is planned but will require more invasive changes to the library. Link: https://lore.kernel.org/lkml/20190110162435.309262-1-arnd@arndb.de/T/ Link: https://lore.kernel.org/lkml/20190118161835.2259170-1-arnd@arndb.de/ Link: https://git.linaro.org/people/arnd/musl-y2038.git/ [2]
2019-02-07timex: use __kernel_timex internallyDeepa Dinamani1-1/+1
struct timex is not y2038 safe. Replace all uses of timex with y2038 safe __kernel_timex. Note that struct __kernel_timex is an ABI interface definition. We could define a new structure based on __kernel_timex that is only available internally instead. Right now, there isn't a strong motivation for this as the structure is isolated to a few defined struct timex interfaces and such a structure would be exactly the same as struct timex. The patch was generated by the following coccinelle script: virtual patch @depends on patch forall@ identifier ts; expression e; @@ ( - struct timex ts; + struct __kernel_timex ts; | - struct timex ts = {}; + struct __kernel_timex ts = {}; | - struct timex ts = e; + struct __kernel_timex ts = e; | - struct timex *ts; + struct __kernel_timex *ts; | (memset \| copy_from_user \| copy_to_user \)(..., - sizeof(struct timex)) + sizeof(struct __kernel_timex)) ) @depends on patch forall@ identifier ts; identifier fn; @@ fn(..., - struct timex *ts, + struct __kernel_timex *ts, ...) { ... } @depends on patch forall@ identifier ts; identifier fn; @@ fn(..., - struct timex *ts) { + struct __kernel_timex *ts) { ... } Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Cc: linux-alpha@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-01-25ptp: fix debugfs_simple_attr.cocci warningsYueHaibing1-8/+8
Use DEFINE_DEBUGFS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTRIBUTE for debugfs files. Semantic patch information: Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file() imposes some significant overhead as compared to DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe(). Generated by: scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-22ptp: add debugfs support for ptp_qoriqYangbo Lu4-2/+108
This patch is to add debugfs support for ptp_qoriq. Current debugfs supports to control fiper1/fiper2 loopback mode. If the loopback mode is enabled, the fiper1/fiper2 pulse is looped back into trigger1/ trigger2 input. This is very useful for validating hardware and driver without external hardware. Below is an example to enable fiper1 loopback. echo 1 > /sys/kernel/debug/2d10e00.ptp_clock/fiper1-loopback Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-22ptp_qoriq: support external trigger stamp FIFOYangbo Lu1-14/+54
The external trigger stamp FIFO was introduced as a new feature for QorIQ 1588 timer IP block. This patch is to support it by adding a new dts property "fsl,extts-fifo". Any QorIQ 1588 timer supporting this feature is required to add this property in its dts node. In addition, the FIFO should be cleaned up before enabling external trigger interrupts. Otherwise, there will be interrupts immediately just after enabling external trigger interrupts. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-22ptp_qoriq: fix interrupt enabling and handlingYangbo Lu1-31/+31
The tmr_tevent register would update event bits no matter tmr_temask bits were set or not. So we should get interrupts by tmr_tevent & tmr_temask, and clean up interrupts in tmr_tevent before enabling them. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-01-08ptp: check that rsv field is zero in struct ptp_sys_offset_extendedEugene Syromiatnikov1-1/+2
Otherwise it is impossible to use it for something else, as it will break userspace that puts garbage there. The same check should be done in other structures, but the fact that data in reserved fields is ignored is already part of the kernel ABI. Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-28Merge tag 'char-misc-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds1-2/+2
Pull char/misc driver updates from Greg KH: "Here is the big set of char and misc driver patches for 4.21-rc1. Lots of different types of driver things in here, as this tree seems to be the "collection of various driver subsystems not big enough to have their own git tree" lately. Anyway, some highlights of the changes in here: - binderfs: is it a rule that all driver subsystems will eventually grow to have their own filesystem? Binder now has one to handle the use of it in containerized systems. This was discussed at the Plumbers conference a few months ago and knocked into mergable shape very fast by Christian Brauner. Who also has signed up to be another binder maintainer, showing a distinct lack of good judgement :) - binder updates and fixes - mei driver updates - fpga driver updates and additions - thunderbolt driver updates - soundwire driver updates - extcon driver updates - nvmem driver updates - hyper-v driver updates - coresight driver updates - pvpanic driver additions and reworking for more device support - lp driver updates. Yes really, it's _finally_ moved to the proper parallal port driver model, something I never thought I would see happen. Good stuff. - other tiny driver updates and fixes. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (116 commits) MAINTAINERS: add another Android binder maintainer intel_th: msu: Fix an off-by-one in attribute store stm class: Add a reference to the SyS-T document stm class: Fix a module refcount leak in policy creation error path char: lp: use new parport device model char: lp: properly count the lp devices char: lp: use first unused lp number while registering char: lp: detach the device when parallel port is removed char: lp: introduce list to save port number bus: qcom: remove duplicated include from qcom-ebi2.c VMCI: Use memdup_user() rather than duplicating its implementation char/rtc: Use of_node_name_eq for node name comparisons misc: mic: fix a DMA pool free failure ptp: fix an IS_ERR() vs NULL check genwqe: Fix size check binder: implement binderfs binder: fix use-after-free due to ksys_close() during fdget() bus: fsl-mc: remove duplicated include files bus: fsl-mc: explicitly define the fsl_mc_command endianness misc: ti-st: make array read_ver_cmd static, shrinks object size ...
2018-12-19ptp: fix an IS_ERR() vs NULL checkDan Carpenter1-1/+2
We recently modified pps_register_source() to return error pointers instead of NULL but it seems like there was a merge issue and part of the commit was lost. Anyway, the ptp_clock_register() function needs to be updated to check for IS_ERR() as well. Fixes: 3b1ad360acad ("pps: using ERR_PTR instead of NULL while pps_register_source fails") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-23ptp: Fix pass zero to ERR_PTR() in ptp_clock_registerYueHaibing1-1/+4
Fix smatch warning: drivers/ptp/ptp_clock.c:298 ptp_clock_register() warn: passing zero to 'ERR_PTR' 'err' should be set while device_create_with_groups and pps_register_source fails Fixes: 85a66e550195 ("ptp: create "pins" together with the rest of attributes") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-09ptp: deprecate gettime64() in favor of gettimex64()Miroslav Lichvar2-2/+8
When a driver provides gettimex64(), use it in the PTP_SYS_OFFSET ioctl and POSIX clock's gettime() instead of gettime64(). Drivers should provide only one of the functions. Cc: Richard Cochran <richardcochran@gmail.com> Cc: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-09ptp: add PTP_SYS_OFFSET_EXTENDED ioctlMiroslav Lichvar1-0/+33
The PTP_SYS_OFFSET ioctl, which can be used to measure the offset between a PHC and the system clock, includes the total time that the driver needs to read the PHC timestamp. This typically involves reading of multiple PCI registers (sometimes in multiple iterations) and the register that contains the lowest bits of the timestamp is not read in the middle between the two readings of the system clock. This asymmetry causes the measured offset to have a significant error. Introduce a new ioctl, driver function, and helper functions, which allow the reading of the lowest register to be isolated from the other readings in order to reduce the asymmetry. The ioctl returns three timestamps for each measurement: - system time right before reading the lowest bits of the PHC timestamp - PHC time - system time immediately after reading the lowest bits of the PHC timestamp Cc: Richard Cochran <richardcochran@gmail.com> Cc: Jacob Keller <jacob.e.keller@intel.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-09ptp: check gettime64 return code in PTP_SYS_OFFSET ioctlMiroslav Lichvar1-1/+4
If a gettime64 call fails, return the error and avoid copying data back to user. Cc: Richard Cochran <richardcochran@gmail.com> Cc: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-09ptp: reorder declarations in ptp_ioctl()Miroslav Lichvar1-7/+7
Reorder declarations of variables as reversed Christmas tree. Cc: Richard Cochran <richardcochran@gmail.com> Suggested-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-28ptp: drop redundant kasprintf() to create worker nameRasmus Villemoes1-5/+1
Building with -Wformat-nonliteral, gcc complains drivers/ptp/ptp_clock.c: In function ‘ptp_clock_register’: drivers/ptp/ptp_clock.c:239:26: warning: format not a string literal and no format arguments [-Wformat-nonliteral] worker_name : info->name); kthread_create_worker takes fmt+varargs to set the name of the worker, and that happens with a vsnprintf() to a stack buffer (that is then copied into task_comm). So there's no reason not to just pass "ptp%d", ptp->index to kthread_create_worker() and avoid the intermediate worker_name variable. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by: Richard Cochran <richardcochran@gmail.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-22ptp: ptp_dte: simplify getting .driver_dataWolfram Sang1-4/+2
We should get 'driver_data' from 'struct device' directly. Going via platform_device is an unneeded step back and forth. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-10-17ptp: fix Spectre v1 vulnerabilityGustavo A. R. Silva1-0/+4
pin_index can be indirectly controlled by user-space, hence leading to a potential exploitation of the Spectre variant 1 vulnerability. This issue was detected with the help of Smatch: drivers/ptp/ptp_chardev.c:253 ptp_ioctl() warn: potential spectre issue 'ops->pin_config' [r] (local cap) Fix this by sanitizing pin_index before using it to index ops->pin_config, and before passing it as an argument to function ptp_set_pinfunc(), in which it is used to index info->pin_config. Notice that given that speculation windows are large, the policy is to kill the speculation on the first load and not worry if it can be completed with a dependent load/store [1]. [1] https://marc.info/?l=linux-kernel&m=152449131114778&w=2 Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-18Merge tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds1-0/+1
Pull char/misc driver updates from Greg KH: "Here is the bit set of char/misc drivers for 4.19-rc1 There is a lot here, much more than normal, seems like everyone is writing new driver subsystems these days... Anyway, major things here are: - new FSI driver subsystem, yet-another-powerpc low-level hardware bus - gnss, finally an in-kernel GPS subsystem to try to tame all of the crazy out-of-tree drivers that have been floating around for years, combined with some really hacky userspace implementations. This is only for GNSS receivers, but you have to start somewhere, and this is great to see. Other than that, there are new slimbus drivers, new coresight drivers, new fpga drivers, and loads of DT bindings for all of these and existing drivers. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits) android: binder: Rate-limit debug and userspace triggered err msgs fsi: sbefifo: Bump max command length fsi: scom: Fix NULL dereference misc: mic: SCIF Fix scif_get_new_port() error handling misc: cxl: changed asterisk position genwqe: card_base: Use true and false for boolean values misc: eeprom: assignment outside the if statement uio: potential double frees if __uio_register_device() fails eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency misc: ti-st: Fix memory leak in the error path of probe() android: binder: Show extra_buffers_size in trace firmware: vpd: Fix section enabled flag on vpd_section_destroy platform: goldfish: Retire pdev_bus goldfish: Use dedicated macros instead of manual bit shifting goldfish: Add missing includes to goldfish.h mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux dt-bindings: mux: add adi,adgs1408 Drivers: hv: vmbus: Cleanup synic memory free path Drivers: hv: vmbus: Remove use of slow_virt_to_phys() Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind() ...
2018-08-06ptp_qoriq: use div_u64/div_u64_rem for 64-bit divisionYangbo Lu1-2/+4
This is a fix-up patch for below build issue with multi_v7_defconfig. drivers/ptp/ptp_qoriq.o: In function `qoriq_ptp_probe': ptp_qoriq.c:(.text+0xd0c): undefined reference to `__aeabi_uldivmod' Fixes: 91305f281262 ("ptp_qoriq: support automatic configuration for ptp timer") Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-05ptp_qoriq: support automatic configuration for ptp timerYangbo Lu1-3/+108
This patch is to support automatic configuration for ptp timer. If required ptp dts properties are not provided, driver could try to calculate a set of default configurations to initialize the ptp timer. This makes the driver work for many boards which don't have the required ptp dts properties in current kernel. Also the users could set dts properties by themselves according to their requirement. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-20Merge ra.kernel.org:/pub/scm/linux/kernel/git/torvalds/linuxDavid S. Miller1-0/+1
All conflicts were trivial overlapping changes, so reasonably easy to resolve. Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-18ptp: fix missing break in switchGustavo A. R. Silva1-0/+1
It seems that a *break* is missing in order to avoid falling through to the default case. Otherwise, checking *chan* makes no sense. Fixes: 72df7a7244c0 ("ptp: Allow reassigning calibration pin function") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-07-07headers: separate linux/mod_devicetable.h from linux/platform_device.hRandy Dunlap1-0/+1
At over 4000 #includes, <linux/platform_device.h> is the 9th most #included header file in the Linux kernel. It does not need <linux/mod_devicetable.h>, so drop that header and explicitly add <linux/mod_devicetable.h> to source files that need it. 4146 #include <linux/platform_device.h> After this patch, there are 225 files that use <linux/mod_devicetable.h>, for a reduction of around 3900 times that <linux/mod_devicetable.h> does not have to be read & parsed. 225 #include <linux/mod_devicetable.h> This patch was build-tested on 20 different arch-es. It also makes these drivers SubmitChecklist#1 compliant. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kbuild test robot <lkp@intel.com> # drivers/media/platform/vimc/ Reported-by: kbuild test robot <lkp@intel.com> # drivers/pinctrl/pinctrl-u300.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-06-26ptp: support DPAA FMan 1588 timer in ptp_qoriqYangbo Lu2-39/+67
This patch is to support DPAA (Data Path Acceleration Architecture) 1588 timer by adding "fsl,fman-ptp-timer" compatible, sharing interrupt with FMan, adding FSL_DPAA_ETH dependency, and fixing up register offset. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Madalin Bucur <madalin.bucur@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-20ptp: replace getnstimeofday64() with ktime_get_real_ts64()Arnd Bergmann2-3/+3
getnstimeofday64() is deprecated and getting replaced throughout the kernel with ktime_get_*() based helpers for a more consistent interface. The two functions do the exact same thing, so this is just a cosmetic change. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-28ptp_qoriq: move some definitions to header fileYangbo Lu1-131/+1
This patch is to move some definitions in ptp_qoriq.c to the header file. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-05-28ptp: rework gianfar_ptp as QorIQ common PTP driverYangbo Lu3-7/+592
gianfar_ptp was the PTP clock driver for 1588 timer module of Freescale QorIQ eTSEC (Enhanced Three-Speed Ethernet Controllers) platforms. Actually QorIQ DPAA (Data Path Acceleration Architecture) platforms is also using the same 1588 timer module in hardware. This patch is to rework gianfar_ptp as QorIQ common PTP driver to support both DPAA and eTSEC. Moved gianfar_ptp.c to drivers/ptp/, renamed it as ptp_qoriq.c, and renamed many variables. There were not any function changes. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-04-27ptp_pch: use helpers function for converting between ns and timespecYueHaibing1-5/+2
use ns_to_timespec64() and timespec64_to_ns() instead of open coding Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-11vfs: do bulk POLL* -> EPOLL* replacementLinus Torvalds1-1/+1
This is the mindless scripted replacement of kernel use of POLL* variables as described by Al, done by this script: for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'` for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done done with de-mangling cleanups yet to come. NOTE! On almost all architectures, the EPOLL* constants have the same values as the POLL* constants do. But they keyword here is "almost". For various bad reasons they aren't the same, and epoll() doesn't actually work quite correctly in some cases due to this on Sparc et al. The next patch from Al will sort out the final differences, and we should be all done. Scripted-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-11-28the rest of drivers/*: annotate ->poll() instancesAl Viro2-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-16Merge tag 'for-linus-4.15-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds1-1/+4
Pull xen updates from Juergen Gross: "Xen features and fixes for v4.15-rc1 Apart from several small fixes it contains the following features: - a series by Joao Martins to add vdso support of the pv clock interface - a series by Juergen Gross to add support for Xen pv guests to be able to run on 5 level paging hosts - a series by Stefano Stabellini adding the Xen pvcalls frontend driver using a paravirtualized socket interface" * tag 'for-linus-4.15-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (34 commits) xen/pvcalls: fix potential endless loop in pvcalls-front.c xen/pvcalls: Add MODULE_LICENSE() MAINTAINERS: xen, kvm: track pvclock-abi.h changes x86/xen/time: setup vcpu 0 time info page x86/xen/time: set pvclock flags on xen_time_init() x86/pvclock: add setter for pvclock_pvti_cpu0_va ptp_kvm: probe for kvm guest availability xen/privcmd: remove unused variable pageidx xen: select grant interface version xen: update arch/x86/include/asm/xen/cpuid.h xen: add grant interface version dependent constants to gnttab_ops xen: limit grant v2 interface to the v1 functionality xen: re-introduce support for grant v2 interface xen: support priv-mapping in an HVM tools domain xen/pvcalls: remove redundant check for irq >= 0 xen/pvcalls: fix unsigned less than zero error check xen/time: Return -ENODEV from xen_get_wallclock() xen/pvcalls-front: mark expected switch fall-through xen: xenbus_probe_frontend: mark expected switch fall-throughs xen/time: do not decrease steal time after live migration on xen ...
2017-11-08x86/pvclock: add setter for pvclock_pvti_cpu0_vaJoao Martins1-1/+1
Right now there is only a pvclock_pvti_cpu0_va() which is defined on kvmclock since: commit dac16fba6fc5 ("x86/vdso: Get pvclock data from the vvar VMA instead of the fixmap") The only user of this interface so far is kvm. This commit adds a setter function for the pvti page and moves pvclock_pvti_cpu0_va to pvclock, which is a more generic place to have it; and would allow other PV clocksources to use it, such as Xen. While moving pvclock_pvti_cpu0_va into pvclock, rename also this function to pvclock_get_pvti_cpu0_va (including its call sites) to be symmetric with the setter (pvclock_set_pvti_cpu0_va). Signed-off-by: Joao Martins <joao.m.martins@oracle.com> Acked-by: Andy Lutomirski <luto@kernel.org> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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