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e1d9148582
linux/drivers/acpi
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Mario Limonciello e1d9148582 ACPICA: Drop port I/O validation for some regions 
Microsoft introduced support in Windows XP for blocking port I/O
to various regions.  For Windows compatibility ACPICA has adopted
the same protections and will disallow writes to those
(presumably) the same regions.

On some systems the AML included with the firmware will issue 4 byte
long writes to 0x80.  These writes aren't making it over because of this
blockage. The first 4 byte write attempt is rejected, and then
subsequently 1 byte at a time each offset is tried. The first at 0x80
works, but then the next 3 bytes are rejected.

This manifests in bizarre failures for devices that expected the AML to
write all 4 bytes.  Trying the same AML on Windows 10 or 11 doesn't hit
this failure and all 4 bytes are written.

Either some of these regions were wrong or some point after Windows XP
some of these regions blocks have been lifted.

In the last 15 years there doesn't seem to be any reports popping up of
this error in the Windows event viewer anymore.  There is no documentation
at Microsoft's developer site indicating that Windows ACPI interpreter
blocks these regions. Between the lack of documentation and the fact that
the writes actually do work in Windows 10 and 11, it's quite likely
Windows doesn't actually enforce this anymore.

So to help the issue, only enforce Windows XP specific entries if the
latest _OSI supported is Windows XP. Continue to enforce the
ALWAYS_ILLEGAL entries.

Link: https://github.com/acpica/acpica/pull/817
Fixes: 7f07190390 ("ACPICA: New: I/O port protection")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-12-30 18:49:18 +01:00
..
acpica ACPICA: Drop port I/O validation for some regions 2022-12-30 18:49:18 +01:00
apei treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
arm64 ACPI: APMT: Fix kerneldoc and indentation 2022-11-15 13:09:44 +00:00
dptf ACPI: DPTF: Drop stale link from Kconfig help 2022-09-28 17:26:25 +02:00
nfit cxl for 6.2 2022-12-12 13:55:31 -08:00
numa MM patches for 6.2-rc1. 2022-12-13 19:29:45 -08:00
pmic ACPI: PMIC: xpower: Fix _TMP ACPI errors 2021-12-08 15:34:57 +01:00
x86 ACPI: x86: Add skip i2c clients quirk for Medion Lifetab S10346 2022-12-08 15:32:53 +01:00
ac.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
acpi_adxl.c
acpi_amba.c Merge branches 'acpi-ec', 'acpi-ac', 'acpi-fan', 'acpi-video' and 'acpi-amba' 2022-10-03 19:59:47 +02:00
acpi_apd.c ACPI: APD: Use the helper acpi_dev_get_memory_resources() 2022-09-10 18:22:24 +02:00
acpi_cmos_rtc.c
acpi_configfs.c
acpi_dbg.c
acpi_extlog.c ACPI: extlog: Handle multiple records 2022-10-13 20:43:10 +02:00
acpi_ffh.c ACPI: Implement a generic FFH Opregion handler 2022-11-14 19:09:07 +01:00
acpi_fpdt.c ACPI: tables: FPDT: Don't call acpi_os_map_memory() on invalid phys address 2022-09-10 18:18:34 +02:00
acpi_ipmi.c ACPI: IPMI: replace usage of found with dedicated list iterator variable 2022-03-25 18:01:40 +01:00
acpi_lpat.c
acpi_lpit.c Revert "ACPI / PM: LPIT: Register sysfs attributes based on FADT" 2022-07-15 20:04:07 +02:00
acpi_lpss.c Merge branch 'acpi-uid' 2022-10-03 20:09:22 +02:00
acpi_memhotplug.c ACPI: memhotplug: use a single static memory group for a single memory device 2021-09-08 11:50:23 -07:00
acpi_pad.c Merge branches 'acpi-fan', 'acpi-pcc', 'acpi-misc' and 'pnp' 2022-12-12 15:24:15 +01:00
acpi_pcc.c ACPI: PCC: Setup PCC Opregion handler only if platform interrupt is available 2022-11-23 19:06:56 +01:00
acpi_platform.c Merge branches 'acpi-scan', 'acpi-bus' and 'acpi-platform' 2022-09-30 20:28:22 +02:00
acpi_pnp.c ACPI: PNP: remove duplicated BRI0A49 and BDP3336 entries 2021-09-24 18:12:15 +02:00
acpi_processor.c
acpi_tad.c
acpi_video.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
acpi_watchdog.c
battery.c ACPI updates for 6.2-rc1 2022-12-12 13:38:17 -08:00
bgrt.c ACPI: BGRT: use static for BGRT_SHOW kobj_attribute defines 2022-04-22 16:55:33 +02:00
blacklist.c
bus.c ACPI updates for 6.2-rc1 2022-12-12 13:38:17 -08:00
button.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
container.c ACPI: container: Use acpi_dev_for_each_child() 2022-06-20 20:33:05 +02:00
cppc_acpi.c ACPI: use sysfs_emit() instead of scnprintf() 2022-12-02 20:24:55 +01:00
custom_method.c
debugfs.c
device_pm.c Merge branches 'acpi-apei', 'acpi-wakeup', 'acpi-reboot' and 'acpi-thermal' 2022-10-10 18:11:11 +02:00
device_sysfs.c ACPI: bus: Drop driver member of struct acpi_device 2022-06-30 14:11:21 +02:00
dock.c ACPI: Use acpi_fetch_acpi_dev() instead of acpi_bus_get_device() 2021-12-17 18:45:51 +01:00
ec_sys.c ACPI: EC: Mark the ec_sys write_support param as module_param_hw() 2021-12-01 20:19:30 +01:00
ec.c Merge branch 'acpi-ec' 2022-12-15 18:38:22 +01:00
event.c
evged.c
fan_attr.c ACPI: fan: Convert to use sysfs_emit_at() API 2022-12-06 12:44:14 +01:00
fan_core.c ACPI: fan: Bail out if extract package failed 2022-11-23 19:31:57 +01:00
fan.h ACPI: DPTF: Support Meteor Lake 2022-05-25 15:37:07 +02:00
glue.c ACPI: glue: Introduce acpi_find_child_by_adr() 2022-06-20 20:28:48 +02:00
hed.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
internal.h ACPI: EC: Fix EC address space handler unregistration 2022-12-08 17:42:12 +01:00
ioapic.c
irq.c ACPI: irq: Fix some kernel-doc issues 2022-11-10 20:21:35 +01:00
Kconfig ACPI updates for 6.2-rc1 2022-12-12 13:38:17 -08:00
Makefile ACPI: Implement a generic FFH Opregion handler 2022-11-14 19:09:07 +01:00
nvs.c
osi.c ACPI: OSI: Remove Linux-HPI-Hybrid-Graphics _OSI string 2022-08-25 20:18:17 +02:00
osl.c ACPI: OSL: Remove the helper for deactivating memory region 2022-04-27 20:44:55 +02:00
pci_irq.c ACPI / PCI: fix LPIC IRQ model default PCI IRQ polarity 2022-11-26 12:57:18 +00:00
pci_link.c ACPI/PCI: Remove useless NULL pointer checks 2022-07-27 21:21:27 +02:00
pci_mcfg.c PCI: loongson: Add ACPI init support 2022-07-14 15:25:36 -05:00
pci_root.c cxl/acpi: Set ACPI's CXL _OSC to indicate RCD mode support 2022-12-05 10:32:26 -08:00
pci_slot.c
pfr_telemetry.c ACPI: pfr_telemetry: use ACPI_FREE() to free acpi_object 2022-11-23 19:23:25 +01:00
pfr_update.c iov_iter work; most of that is about getting rid of 2022-12-12 18:29:54 -08:00
platform_profile.c
power.c ACPI: PM: Print full name path while adding power resource 2022-11-10 20:43:30 +01:00
pptt.c ACPI: PPTT: Leave the table mapped for the runtime usage 2022-07-22 10:04:43 +02:00
prmt.c ACPI: PRM: Change handler_addr type to void pointer 2022-06-30 17:35:45 +02:00
proc.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
processor_core.c
processor_driver.c ACPI: processor: Split out thermal initialization from ACPI PSS 2022-06-29 18:51:22 +02:00
processor_idle.c ACPI: processor: idle: Drop unnecessary statements and parens 2022-12-07 18:07:15 +01:00
processor_pdc.c
processor_perflib.c ACPI: processor: perflib: Adjust acpi_processor_notify_smm() return value 2022-12-07 18:09:39 +01:00
processor_thermal.c ACPI: processor: Remove freq Qos request for all CPUs 2022-08-23 18:09:06 +02:00
processor_throttling.c ACPI: processor: throttling: remove variable count 2022-10-28 19:02:45 +02:00
property.c Merge branch 'acpi-dev' 2022-09-30 20:05:16 +02:00
reboot.c
resource.c ACPI: resource: Skip IRQ override on Asus Vivobook S5602ZA 2022-10-26 13:41:11 +02:00
sbs.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
sbshc.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
sbshc.h
scan.c ACPI: scan: substitute empty_zero_page with helper ZERO_PAGE(0) 2022-11-03 19:51:52 +01:00
sleep.c PM: ACPI: reboot: Reinstate S5 for reboot 2022-10-04 15:59:36 +02:00
sleep.h ACPI: s2idle: Add a new ->check() callback for platform_s2idle_ops 2022-09-09 17:37:40 +02:00
spcr.c ACPI: SPCR: Add support for NVIDIA 16550-compatible port subtype 2022-04-13 20:37:29 +02:00
sysfs.c ACPI: sysfs: use sysfs_emit() to instead of scnprintf() 2022-11-10 20:24:49 +01:00
tables.c ACPI: tables: Fix the stale comments for acpi_locate_initial_tables() 2022-11-10 20:15:55 +01:00
thermal.c Merge branches 'acpi-scan', 'acpi-bus', 'acpi-tables' and 'acpi-sysfs' 2022-12-12 14:55:44 +01:00
tiny-power-button.c ACPI: make remove callback of ACPI driver void 2022-11-23 19:11:22 +01:00
utils.c Merge branch 'acpi-uid' 2022-10-03 20:09:22 +02:00
video_detect.c ACPI: video: Prefer native over vendor 2022-11-16 19:52:48 +01:00
viot.c iommu/dma: Make header private 2022-09-09 09:26:22 +02:00
wakeup.c