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ee7abc105e
linux/drivers/platform/x86
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Tamar Mashiah ee7abc105e platform/x86: intel_pmc_core: export platform global reset bits via etr3 sysfs file 
During PCH (platform/board) manufacturing process a global platform
reset has to be induced in order for the configuration changes take
the effect upon following platform reset. This is an internal platform
state and is not intended to be used in the regular platform resets.
The setting is exposed via ETR3 (Extended Test Mode Register 3).
After the manufacturing process is completed the register cannot be
written anymore and is hardware locked.
This setting was commonly done by accessing PMC registers via /dev/mem
but due to security concerns /dev/mem access is much more restricted,
hence the reason for exposing this setting via the dedicated sysfs
interface.
To prevent post manufacturing abuse the register is protected
by hardware locking and the file is set to read-only mode via is_visible
handler.

The register in MMIO space is defined for Cannon Lake and newer PCHs.

Cc: Hans de Goede <hdegoede@redhat.com>
Cc: David E Box <david.e.box@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tamar Mashiah <tamar.mashiah@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20210411141532.3004893-1-tomas.winkler@intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2021-04-13 09:26:40 +02:00
..
dell platform/x86: Adjust Dell drivers to a personal email address 2021-04-07 19:47:23 +02:00
intel_speed_select_if platform/x86: ISST: Account for increased timeout in some cases 2021-04-07 19:47:22 +02:00
acer-wireless.c acer-wireless: send an EV_SYN/SYN_REPORT between state changes 2020-12-07 16:10:11 +01:00
acer-wmi.c platform/x86: acer-wmi: Don't use ACPI_EXCEPTION() 2021-02-04 15:15:19 +01:00
acerhdf.c thermal/core: Remove ms based delay fields 2021-01-19 22:23:49 +01:00
adv_swbutton.c platform/x86: add support for Advantech software defined button 2021-04-07 19:46:56 +02:00
amd-pmc.c platform/x86: amd-pmc: put device on error paths 2021-02-02 19:33:44 +01:00
amilo-rfkill.c
apple-gmux.c platform/x86: apple-gmux: Replace HTTP links with HTTPS ones 2020-07-15 13:01:20 +03:00
asus-laptop.c platform/x86: asus-laptop: fix kobj_to_dev.cocci warnings 2021-03-23 21:06:10 +01:00
asus-nb-wmi.c platform/x86: asus-wmi: Add support for SW_TABLET_MODE on UX360 2020-10-28 12:47:37 +01:00
asus-wireless.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
asus-wmi.c platform/x86: asus-wmi: Add param to turn fn-lock mode on by default 2021-04-07 19:47:08 +02:00
asus-wmi.h platform/x86: asus-wmi: Add support for SW_TABLET_MODE on UX360 2020-10-28 12:47:37 +01:00
classmate-laptop.c platform/x86: Typo fix in the file classmate-laptop.c 2021-03-23 21:05:58 +01:00
compal-laptop.c platform/x86: compal-laptop: Initialize "value" in ec_read_u8() 2019-09-07 21:16:09 +03:00
eeepc-laptop.c platform/x86: eeepc-laptop: Drop duplicate check for led_classdev_unregister() 2020-05-07 19:39:32 +03:00
eeepc-wmi.c
fujitsu-laptop.c
fujitsu-tablet.c
gpd-pocket-fan.c platform/x86: GPD pocket fan: Fix error message when temp-limits are out of range 2020-03-20 14:44:47 +02:00
hdaps.c treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
hp_accel.c platform/x86: hp_accel: Add support for HP ZBook 17 G5 2019-07-29 18:31:48 +03:00
hp-wireless.c
hp-wmi.c platform/x86: hp-wmi: add platform profile support 2021-03-08 11:33:39 +01:00
huawei-wmi.c platform/x86: huawei-wmi: Remove unnecessary battery mutex 2019-10-21 12:17:30 +03:00
i2c-multi-instantiate.c platform/x86: i2c-multi-instantiate: Don't create platform device for INT3515 ACPI nodes 2021-01-04 15:54:45 +01:00
ibm_rtl.c
ideapad-laptop.c platform/x86: ideapad-laptop: add "always on USB charging" control support 2021-02-04 10:21:43 +01:00
intel_atomisp2_led.c platform/x86: Add new intel_atomisp2_led driver 2020-07-09 22:47:27 +03:00
intel_atomisp2_pm.c platform/x86: intel_atomisp2_pm: Spelling fixes 2020-01-10 11:57:22 +02:00
intel_bxtwc_tmu.c platform/x86: intel_bxtwc_tmu: Remove dev_err() usage after platform_get_irq() 2019-08-01 18:03:02 +03:00
intel_cht_int33fe_common.c platform/x86: intel_cht_int33fe: Drop double check for ACPI companion device 2020-07-09 22:40:36 +03:00
intel_cht_int33fe_common.h platform/x86: intel_cht_int33fe: Split code to Micro-B and Type-C 2019-10-15 10:55:10 +03:00
intel_cht_int33fe_microb.c platform/x86: intel_cht_int33fe: Split code to Micro-B and Type-C 2019-10-15 10:55:10 +03:00
intel_cht_int33fe_typec.c platform/x86: intel_cht_int33fe: Fix spelling issues 2020-04-20 14:47:45 +03:00
intel_chtdc_ti_pwrbtn.c
intel_int0002_vgpio.c Additional power management updates for 5.7-rc1 2020-04-06 10:14:39 -07:00
intel_ips.c
intel_ips.h platform/x86: intel-ips: Use the correct style for SPDX License Identifier 2020-01-10 11:57:21 +02:00
intel_menlow.c platform/x86: intel_menlow: switch to use <linux/units.h> helpers 2020-01-31 10:30:40 -08:00
intel_mrfld_pwrbtn.c
intel_oaktrail.c platform/x86: intel_oaktrail: Use pr_warn instead of pr_warning 2019-10-18 15:01:35 +02:00
intel_pmc_core_pltdrv.c platform/x86: intel_pmc_core: do not create a static struct device 2020-09-24 14:05:21 +03:00
intel_pmc_core.c platform/x86: intel_pmc_core: export platform global reset bits via etr3 sysfs file 2021-04-13 09:26:40 +02:00
intel_pmc_core.h platform/x86: intel_pmc_core: export platform global reset bits via etr3 sysfs file 2021-04-13 09:26:40 +02:00
intel_pmt_class.c platform/x86: intel_pmt_class: Initial resource to 0 2021-03-23 21:05:47 +01:00
intel_pmt_class.h mfd: intel_pmt: Add support for DG1 2021-03-10 10:48:48 +00:00
intel_pmt_crashlog.c platform/x86: intel_pmt_crashlog: Fix incorrect macros 2021-03-23 21:05:51 +01:00
intel_pmt_telemetry.c mfd: intel_pmt: Add support for DG1 2021-03-10 10:48:48 +00:00
intel_punit_ipc.c platform/x86: intel_punit_ipc: Drop useless label 2019-10-27 02:10:57 +03:00
intel_scu_ipc.c platform/x86: intel_scu_ipc: Increase virtual timeout from 3 to 5 seconds 2021-02-11 16:49:10 +01:00
intel_scu_ipcutil.c platform/x86: intel_scu_ipcutil: Convert to use new SCU IPC API 2020-04-24 11:17:41 +01:00
intel_scu_pcidrv.c sfi: Remove framework for deprecated firmware 2021-02-15 20:09:46 +01:00
intel_scu_pltdrv.c platform/x86: Add Elkhart Lake SCU/PMC support 2020-05-05 20:26:16 +03:00
intel_scu_wdt.c platform/x86: intel_scu_wdt: Drop mistakenly added const 2021-02-05 12:54:27 +02:00
intel_telemetry_core.c platform/x86: intel_telemetry: Add telemetry_get_pltdata() 2020-04-24 11:18:30 +01:00
intel_telemetry_debugfs.c platform/x86: intel_pmc_ipc: Convert to MFD 2020-04-24 11:18:44 +01:00
intel_telemetry_pltdrv.c platform/x86: intel_pmc_ipc: Convert to MFD 2020-04-24 11:18:44 +01:00
intel_turbo_max_3.c platform/x86: Convert to new CPU match macros 2020-03-24 21:33:00 +01:00
intel-hid.c platform/x86: intel-hid: Fix spurious wakeups caused by tablet-mode events during suspend 2021-04-06 18:02:57 +02:00
intel-rst.c
intel-smartconnect.c
intel-uncore-frequency.c platform/x86/intel-uncore-freq: Add Sapphire Rapids server support 2021-02-03 13:10:34 +01:00
intel-vbtn.c platform/x86: intel-vbtn: Remove unused KEYMAP_LEN define 2021-04-07 19:47:13 +02:00
intel-wmi-sbl-fw-update.c platform/x86: wmi: Make remove callback return void 2021-03-08 11:33:39 +01:00
intel-wmi-thunderbolt.c platform/x86: wmi: Make remove callback return void 2021-03-08 11:33:39 +01:00
Kconfig platform/x86: add support for Advantech software defined button 2021-04-07 19:46:56 +02:00
lg-laptop.c platform: x86: ACPI: Get rid of ACPICA message printing 2021-03-08 11:33:39 +01:00
Makefile platform/x86: add support for Advantech software defined button 2021-04-07 19:46:56 +02:00
mlx-platform.c platform/x86: mlx-platform: Fix item counter assignment for MSN2700/ComEx system 2020-12-08 11:14:49 +01:00
msi-laptop.c
msi-wmi.c platform/x86: msi-wmi: Fix variable 'status' set but not used compiler warning 2021-02-04 13:35:20 +01:00
mxm-wmi.c
panasonic-laptop.c platform/x86: panasonic-laptop: remove redundant assignment of variable result 2021-04-07 19:47:22 +02:00
pcengines-apuv2.c platform/x86: pcengines-apuv2: Fix typo on define of AMD_FCH_GPIO_REG_GPIO55_DEVSLP0 2020-09-24 14:04:53 +03:00
peaq-wmi.c platform/x86: peaq-wmi: switch to using polled mode of input devices 2019-10-15 10:55:09 +03:00
pmc_atom.c platform/x86: pmc_atom: Add Lex 2I385SW to critclk_systems DMI table 2020-02-10 17:47:38 +02:00
samsung-laptop.c platform/x86: samsung-laptop: Drop duplicate check for led_classdev_unregister() 2020-05-07 20:14:24 +03:00
samsung-q10.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
sony-laptop.c platform/x86: remove unneeded break 2020-10-28 12:32:06 +01:00
system76_acpi.c platform/x86: system76-acpi: Fix brightness_set schedule while atomic 2020-07-09 22:40:36 +03:00
tc1100-wmi.c
thinkpad_acpi.c platform/x86: thinkpad_acpi: Correct thermal sensor allocation 2021-04-13 08:29:17 +02:00
topstar-laptop.c
toshiba_acpi.c platform/x86: toshiba_acpi: Fix the wrong variable assignment 2020-11-26 15:48:46 +01:00
toshiba_bluetooth.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
toshiba_haps.c
toshiba-wmi.c
touchscreen_dmi.c platform/x86: touchscreen_dmi: Handle device properties with software node API 2021-03-08 11:33:39 +01:00
uv_sysfs.c x86/platform/uv: Add sysfs hubless leaves 2020-12-07 19:51:05 +01:00
wmi-bmof.c platform/x86: wmi: Make remove callback return void 2021-03-08 11:33:39 +01:00
wmi.c platform/x86: wmi: Make remove callback return void 2021-03-08 11:33:39 +01:00
xiaomi-wmi.c platform/x86: wmi: Make two functions static 2020-04-17 16:47:26 +03:00
xo1-rfkill.c
xo15-ebook.c platform: x86: ACPI: Get rid of ACPICA message printing 2021-03-08 11:33:39 +01:00