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2020-02-24media: rc: add keymap for Videostrong KII ProMohammad Rasim1-0/+1
This is an NEC remote control device shipped with the Videostrong KII Pro tv box as well as other devices from videostrong. Signed-off-by: Mohammad Rasim <mohammad.rasim96@gmail.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-02-24media: atmel: atmel-isc-base: expose white balance as v4l2 controlsEugen Hristev2-0/+64
This exposes the white balance configuration of the ISC as v4l2 controls into userspace. There are 8 controls available: 4 gain controls, sliders, for each of the BAYER components: R, B, GR, GB. These gains are multipliers for each component, in format unsigned 0:4:9 with a default value of 512 (1.0 multiplier). 4 offset controls, sliders, for each of the BAYER components: R, B, GR, GB. These offsets are added/substracted from each component, in format signed 1:12:0 with a default value of 0 (+/- 0) To expose this to userspace, added 8 custom controls, in an auto cluster. To summarize the functionality: The auto cluster switch is the auto white balance control, and it works like this: AWB == 1: autowhitebalance is on, the do_white_balance button is inactive, the gains/offsets are inactive, but volatile and readable. Thus, the results of the whitebalance algorithm are available to userspace to read at any time. AWB == 0: autowhitebalance is off, cluster is in manual mode, user can configure the gain/offsets directly. More than that, if the do_white_balance button is pressed, the driver will perform one-time-adjustment, (preferably with color checker card) and the userspace can read again the new values. With this feature, the userspace can save the coefficients and reinstall them for example after reboot or reprobing the driver. [hverkuil: fix checkpatch warning] [hverkuil: minor spacing adjustments in the functionality description] Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-02-24mac80211: Add api to support configuring TID specific configurationTamizh chelvam1-0/+10
Implement drv_set_tid_config api to allow TID specific configuration and drv_reset_tid_config api to reset peer specific TID configuration. This per-TID onfiguration will be applied for all the connected stations when MAC is NULL. Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> Link: https://lore.kernel.org/r/1579506687-18296-7-git-send-email-tamizhr@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24nl80211: Add support to configure TID specific RTSCTS configurationTamizh chelvam2-0/+6
This patch adds support to configure per TID RTSCTS control configuration to enable/disable through the NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL attribute. Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> Link: https://lore.kernel.org/r/1579506687-18296-5-git-send-email-tamizhr@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24nl80211: Add support to configure TID specific AMPDU configurationTamizh chelvam2-0/+6
This patch adds support to configure per TID AMPDU control configuration to enable/disable aggregation through the NL80211_TID_CONFIG_ATTR_AMPDU_CTRL attribute. Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> Link: https://lore.kernel.org/r/1579506687-18296-4-git-send-email-tamizhr@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24nl80211: Add support to configure TID specific retry configurationTamizh chelvam2-0/+20
This patch adds support to configure per TID retry configuration through the NL80211_TID_CONFIG_ATTR_RETRY_SHORT and NL80211_TID_CONFIG_ATTR_RETRY_LONG attributes. This TID specific retry configuration will have more precedence than phy level configuration. Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> Link: https://lore.kernel.org/r/1579506687-18296-3-git-send-email-tamizhr@codeaurora.org [rebase completely on top of my previous API changes] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24nl80211: modify TID-config APIJohannes Berg2-40/+54
Make some changes to the TID-config API: * use u16 in nl80211 (only, and restrict to using 8 bits for now), to avoid issues in the future if we ever want to use higher TIDs. * reject empty TIDs mask (via netlink policy) * change feature advertising to not use extended feature flags but have own mechanism for this, which simplifies the code * fix all variable names from 'tid' to 'tids' since it's a mask * change to cfg80211_ name prefixes, not ieee80211_ * fix some minor docs/spelling things. Change-Id: Ia234d464b3f914cdeab82f540e018855be580dce Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24sched/pelt: Add a new runnable average signalVincent Guittot1-10/+16
Now that runnable_load_avg has been removed, we can replace it by a new signal that will highlight the runnable pressure on a cfs_rq. This signal track the waiting time of tasks on rq and can help to better define the state of rqs. At now, only util_avg is used to define the state of a rq: A rq with more that around 80% of utilization and more than 1 tasks is considered as overloaded. But the util_avg signal of a rq can become temporaly low after that a task migrated onto another rq which can bias the classification of the rq. When tasks compete for the same rq, their runnable average signal will be higher than util_avg as it will include the waiting time and we can use this signal to better classify cfs_rqs. The new runnable_avg will track the runnable time of a task which simply adds the waiting time to the running time. The runnable _avg of cfs_rq will be the /Sum of se's runnable_avg and the runnable_avg of group entity will follow the one of the rq similarly to util_avg. Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: "Dietmar Eggemann <dietmar.eggemann@arm.com>" Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Phil Auld <pauld@redhat.com> Cc: Hillf Danton <hdanton@sina.com> Link: https://lore.kernel.org/r/20200224095223.13361-9-mgorman@techsingularity.net
2020-02-24sched/pelt: Remove unused runnable load averageVincent Guittot1-4/+1
Now that runnable_load_avg is no more used, we can remove it to make space for a new signal. Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: "Dietmar Eggemann <dietmar.eggemann@arm.com>" Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Phil Auld <pauld@redhat.com> Cc: Hillf Danton <hdanton@sina.com> Link: https://lore.kernel.org/r/20200224095223.13361-8-mgorman@techsingularity.net
2020-02-24sched/numa: Distinguish between the different task_numa_migrate() failure casesMel Gorman1-22/+27
sched:sched_stick_numa is meant to fire when a task is unable to migrate to the preferred node but from the trace, it's possibile to tell the difference between "no CPU found", "migration to idle CPU failed" and "tasks could not be swapped". Extend the tracepoint accordingly. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> [ Minor edits. ] Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Vincent Guittot <vincent.guittot@linaro.org> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Dietmar Eggemann <dietmar.eggemann@arm.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Phil Auld <pauld@redhat.com> Cc: Hillf Danton <hdanton@sina.com> Link: https://lore.kernel.org/r/20200224095223.13361-4-mgorman@techsingularity.net
2020-02-24PCI: endpoint: Assign function number for each PF in EPC coreKishon Vijay Abraham I1-0/+2
The PCIe endpoint core relies on the drivers that invoke the pci_epc_add_epf() API to allocate and assign a function number to each physical function (PF). Since endpoint function device can be created by multiple mechanisms (configfs, devicetree, etc..), allowing each of these mechanisms to assign a function number would result in mutliple endpoint function devices having the same function number. In order to avoid this, let EPC core assign a function number to the endpoint device. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2020-02-24PCI: endpoint: Protect concurrent access to pci_epf_ops with mutexKishon Vijay Abraham I1-0/+3
Protect concurrent access to pci_epf_ops with a mutex. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2020-02-24nl80211: Add NL command to support TID speicific configurationsTamizh chelvam2-0/+111
Add the new NL80211_CMD_SET_TID_CONFIG command to support data TID specific configuration. Per TID configuration is passed in the nested NL80211_ATTR_TID_CONFIG attribute. This patch adds support to configure per TID noack policy through the NL80211_TID_CONFIG_ATTR_NOACK attribute. Signed-off-by: Tamizh chelvam <tamizhr@codeaurora.org> Link: https://lore.kernel.org/r/1579506687-18296-2-git-send-email-tamizhr@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24PCI: endpoint: Fix for concurrent memory allocation in OB address regionKishon Vijay Abraham I1-0/+3
pci-epc-mem uses a bitmap to manage the Endpoint outbound (OB) address region. This address region will be shared by multiple endpoint functions (in the case of multi function endpoint) and it has to be protected from concurrent access to avoid updating an inconsistent state. Use a mutex to protect bitmap updates to prevent the memory allocation API from returning incorrect addresses. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: stable@vger.kernel.org # v4.14+
2020-02-24PCI: endpoint: Replace spinlock with mutexKishon Vijay Abraham I1-3/+3
The pci_epc_ops is not intended to be invoked from interrupt context. Hence replace spin_lock_irqsave and spin_unlock_irqrestore with mutex_lock and mutex_unlock respectively. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
2020-02-24PCI: endpoint: Use notification chain mechanism to notify EPC events to EPFKishon Vijay Abraham I2-4/+10
Use atomic_notifier_call_chain() to notify EPC events like linkup to EPF driver instead of using linkup ops in EPF driver. This is in preparation for adding proper locking mechanism to EPF ops. This will also enable to add more events (in addition to linkup) in the future. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Vidya Sagar <vidyas@nvidia.com>
2020-02-24cfg80211: Support key configuration for Beacon protection (BIGTK)Jouni Malinen2-0/+11
IEEE P802.11-REVmd/D3.0 adds support for protecting Beacon frames using a new set of keys (BIGTK; key index 6..7) similarly to the way group-addressed Robust Management frames are protected (IGTK; key index 4..5). Extend cfg80211 and nl80211 to allow the new BIGTK to be configured. Add an extended feature flag to indicate driver support for the new key index values to avoid array overflows in driver implementations and also to indicate to user space when this functionality is available. Signed-off-by: Jouni Malinen <jouni@codeaurora.org> Link: https://lore.kernel.org/r/20200222132548.20835-2-jouni@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: fix indentation errorsJérôme Pouiller1-11/+11
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-10-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: merge documentations of field "dev"Jérôme Pouiller1-3/+3
The field "dev" was documented on two places. This patch merges the comments. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-8-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: merge documentations of field "debugfsdir"Jérôme Pouiller1-3/+2
The field "privid" is documented twice. Comments were more or less the same. The patch merge them. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-7-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: drop duplicated documentation of field "reg_notifier"Jérôme Pouiller1-1/+0
The field "reg_notifier" was already documented above the definition of struct wiphy. The comment inside the definition of the struct did not bring more information. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-6-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: drop duplicated documentation of field "perm_addr"Jérôme Pouiller1-1/+0
The field "perm_addr" was already documented above the definition of struct wiphy. Comments were almost identical. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-5-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: drop duplicated documentation of field "_net"Jérôme Pouiller1-1/+0
The field "_net" was already documented above the definition of struct wiphy. Both comments were identical. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-4-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: drop duplicated documentation of field "registered"Jérôme Pouiller1-2/+0
Field "registered" was documented three times: twice in the documentation block of struct wiphy and once inside the struct definition. This patch keep only one comment. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-3-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: drop duplicated documentation of field "privid"Jérôme Pouiller1-5/+0
The field "privid" was already documented above the definition of struct wiphy. Comments were not identical, but they said more or less the same thing. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-2-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24cfg80211: drop duplicated documentation of field "probe_resp_offload"Jérôme Pouiller1-5/+0
The field "probe_resp_offload" was already documented above the definition of struct wiphy. Both comments were identical. Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20200221115604.594035-1-Jerome.Pouiller@silabs.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24Revert "nl80211: add src and dst addr attributes for control port tx/rx"Johannes Berg2-17/+2
This reverts commit 8c3ed7aa2b9ef666195b789e9b02e28383243fa8. As Jouni points out, there's really no need for this, since the RSN pre-authentication frames are normal data frames, not port control frames (locally). We can still revert this now since it hasn't actually gone beyond -next. Fixes: 8c3ed7aa2b9e ("nl80211: add src and dst addr attributes for control port tx/rx") Signed-off-by: Johannes Berg <johannes.berg@intel.com> Link: https://lore.kernel.org/r/20200224101910.b746e263287a.I9eb15d6895515179d50964dec3550c9dc784bb93@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2020-02-24Merge 5.6-rc3 into usb-nextGreg Kroah-Hartman36-358/+190
We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-24clk: imx: imx8mp: fix a53 cpu clockPeng Fan1-1/+2
The A53 CCM clk root only accepts input up to 1GHz, CCM A53 root signoff timing is 1Ghz, however the A53 core which sources from CCM root could run above 1GHz which voilates the CCM. There is a CORE_SEL slice before A53 core, we need configure the CORE_SEL slice source from ARM PLL, not A53 CCM clk root. The A53 CCM clk root should only be used when need to change ARM PLL frequency. Add arm_a53_core clk that could source from arm_a53_div and arm_pll_out. Configure a53 ccm root sources from 800MHz sys pll Configure a53 core sources from arm_pll_out Mark arm_a53_core as critical clk Reviewed-by: Jacky Bai <ping.bai@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-02-24clk: imx: imx8mn: fix a53 cpu clockPeng Fan1-1/+3
The A53 CCM clk root only accepts input up to 1GHz, CCM A53 root signoff timing is 1Ghz, however the A53 core which sources from CCM root could run above 1GHz which voilates the CCM. There is a CORE_SEL slice before A53 core, we need configure the CORE_SEL slice source from ARM PLL, not A53 CCM clk root. The A53 CCM clk root should only be used when need to change ARM PLL frequency. Add arm_a53_core clk that could source from arm_a53_div and arm_pll_out. Configure a53 ccm root sources from 800MHz sys pll Configure a53 core sources from arm_pll_out Mark arm_a53_core as critical clk. Fixes: 96d6392b54db ("clk: imx: Add support for i.MX8MN clock driver") Reviewed-by: Jacky Bai <ping.bai@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-02-24clk: imx: imx8mm: fix a53 cpu clockPeng Fan1-1/+3
The A53 CCM clk root only accepts input up to 1GHz, CCM A53 root signoff timing is 1Ghz, however the A53 core which sources from CCM root could run above 1GHz which voilates the CCM. There is a CORE_SEL slice before A53 core, we need configure the CORE_SEL slice source from ARM PLL, not A53 CCM clk root. The A53 CCM clk root should only be used when need to change ARM PLL frequency. Add arm_a53_core clk that could source from arm_a53_div and arm_pll_out. Configure a53 ccm root sources from 800MHz sys pll Configure a53 core sources from arm_pll_out Mark arm_a53_core as critical clock Fixes: ba5625c3e272 ("clk: imx: Add clock driver support for imx8mm") Reviewed-by: Jacky Bai <ping.bai@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-02-24clk: imx: imx8mq: fix a53 cpu clockPeng Fan1-1/+3
The A53 CCM clk root only accepts input up to 1GHz, CCM A53 root signoff timing is 1Ghz, however the A53 core which sources from CCM root could run above 1GHz which violates the CCM. There is a CORE_SEL slice before A53 core, we need to configure the CORE_SEL slice source from ARM PLL, not A53 CCM clk root. The A53 CCM clk root should only be used when need to change ARM PLL frequency. Add arm_a53_core clk that could source from arm_a53_div and arm_pll_out. Configure a53 ccm root sources from 800MHz sys pll Configure a53 core sources from arm_pll_out Mark arm_a53_core as critical clock Fixes: db27e40b27f1 ("clk: imx8mq: Add the missing ARM clock") Reviewed-by: Jacky Bai <ping.bai@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-02-24Merge 5.6-rc3 into tty-nextGreg Kroah-Hartman36-358/+190
We want the tty fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-02-24firmware: imx: Remove IMX_SC_RPC_SVC_ABORTLeonard Crestez1-1/+0
This is not used by linux and not supported as part of imx SCU api, it was added by mistake. The constant value "9" has since been reassigned in firmware to a different service. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-02-24clk: imx8mp: Rename the IMX8MP_CLK_HDMI_27M clockAnson Huang1-1/+1
On i.MX8MP, internal HDMI 27M clock is actually 24MHz, so rename the IMX8MP_CLK_HDMI_27M to IMX8MP_CLK_HDMI_24M. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2020-02-23efi: Bump the Linux EFI stub major version number to #1Ard Biesheuvel1-1/+19
Now that we have introduced new, generic ways for the OS loader to interface with Linux kernels during boot, we need to record this fact in a way that allows loaders to discover this information, and fall back to the existing methods for older kernels. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi/libstub: Introduce symbolic constants for the stub major/minor versionArd Biesheuvel1-0/+3
Now that we have added new ways to load the initrd or the mixed mode kernel, we will also need a way to tell the loader about this. Add symbolic constants for the PE/COFF major/minor version numbers (which fortunately have always been 0x0 for all architectures), so that we can bump them later to document the capabilities of the stub. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Add support for EFI_RT_PROPERTIES tableArd Biesheuvel1-0/+9
Take the newly introduced EFI_RT_PROPERTIES_TABLE configuration table into account, which carries a mask of which EFI runtime services are still functional after ExitBootServices() has been called by the OS. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Store mask of supported runtime services in struct efiArd Biesheuvel1-0/+31
Revision 2.8 of the UEFI spec introduces provisions for firmware to advertise lack of support for certain runtime services at OS runtime. Let's store this mask in struct efi for easy access. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi/arm: Move FDT specific definitions into fdtparams.cArd Biesheuvel1-9/+1
Push the FDT params specific types and definition into fdtparams.c, and instead, pass a reference to the memory map data structure and populate it directly, and return the system table address as the return value. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi/x86: Drop 'systab' member from struct efiArd Biesheuvel1-25/+27
The systab member in struct efi has outlived its usefulness, now that we have better ways to access the only piece of information we are interested in after init, which is the EFI runtime services table address. So instead of instantiating a doctored copy at early boot with lots of mangled values, and switching the pointer when switching into virtual mode, let's grab the values we need directly, and get rid of the systab pointer entirely. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Add 'runtime' pointer to struct efiArd Biesheuvel1-0/+1
Instead of going through the EFI system table each time, just copy the runtime services table pointer into struct efi directly. This is the last use of the system table pointer in struct efi, allowing us to drop it in a future patch, along with a fair amount of quirky handling of the translated address. Note that usually, the runtime services pointer changes value during the call to SetVirtualAddressMap(), so grab the updated value as soon as that call returns. (Mixed mode uses a 1:1 mapping, and kexec boot enters with the updated address in the system table, so in those cases, we don't need to do anything here) Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi/x86: Make fw_vendor, config_table and runtime sysfs nodes x86 specificArd Biesheuvel1-3/+0
There is some code that exposes physical addresses of certain parts of the EFI firmware implementation via sysfs nodes. These nodes are only used on x86, and are of dubious value to begin with, so let's move their handling into the x86 arch code. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Clean up config_parse_tables()Ard Biesheuvel1-2/+3
config_parse_tables() is a jumble of pointer arithmetic, due to the fact that on x86, we may be dealing with firmware whose native word size differs from the kernel's. This is not a concern on other architectures, and doesn't quite justify the state of the code, so let's clean it up by adding a non-x86 code path, constifying statically allocated tables and replacing preprocessor conditionals with IS_ENABLED() checks. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Make efi_config_init() x86 onlyArd Biesheuvel1-1/+0
The efi_config_init() routine is no longer shared with ia64 so let's move it into the x86 arch code before making further x86 specific changes to it. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Merge EFI system table revision and vendor checksArd Biesheuvel1-0/+4
We have three different versions of the code that checks the EFI system table revision and copies the firmware vendor string, and they are mostly equivalent, with the exception of the use of early_memremap_ro vs. __va() and the lowest major revision to warn about. Let's move this into common code and factor out the commonalities. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Make memreserve table handling local to efi.cArd Biesheuvel1-1/+0
There is no need for struct efi to carry the address of the memreserve table and share it with the world. So move it out and make it __initdata as well. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Move mem_attr_table out of struct efiArd Biesheuvel1-1/+2
The memory attributes table is only used at init time by the core EFI code, so there is no need to carry its address in struct efi that is shared with the world. So move it out, and make it __ro_after_init as well, considering that the value is set during early boot. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Make rng_seed table handling local to efi.cArd Biesheuvel1-1/+0
Move the rng_seed table address from struct efi into a static global variable in efi.c, which is the only place we ever refer to it anyway. This reduces the footprint of struct efi, which is a r/w data structure that is shared with the world. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-02-23efi: Move UGA and PROP table handling to x86 codeArd Biesheuvel1-2/+0
The UGA table is x86 specific (its handling was introduced when the EFI support code was modified to accommodate IA32), so there is no need to handle it in generic code. The EFI properties table is not strictly x86 specific, but it was deprecated almost immediately after having been introduced, due to implementation difficulties. Only x86 takes it into account today, and this is not going to change, so make this table x86 only as well. Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64 Signed-off-by: Ard Biesheuvel <ardb@kernel.org>