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alistair23-linux/drivers/acpi
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Bjorn Helgaas 02bfeb4842 PCI/portdrv: Simplify PCIe feature permission checking 
Some PCIe features (AER, DPC, hotplug, PME) can be managed by either the
platform firmware or the OS, so the host bridge driver may have to request
permission from the platform before using them.  On ACPI systems, this is
done by negotiate_os_control() in acpi_pci_root_add().

The PCIe port driver later uses pcie_port_platform_notify() and
pcie_port_acpi_setup() to figure out whether it can use these features.
But all we need is a single bit for each service, so these interfaces are
needlessly complicated.

Simplify this by adding bits in the struct pci_host_bridge to show when the
OS has permission to use each feature:

  + unsigned int native_aer:1;       /* OS may use PCIe AER */
  + unsigned int native_hotplug:1;   /* OS may use PCIe hotplug */
  + unsigned int native_pme:1;       /* OS may use PCIe PME */

These are set when we create a host bridge, and the host bridge driver can
clear the bits corresponding to any feature the platform doesn't want us to
use.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-30 17:26:54 -05:00
..
acpica ACPICA: All acpica: Update copyrights to 2018 2018-02-06 10:31:20 +01:00
apei Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-01-30 14:18:52 -08:00
arm64 arm64 updates for 4.15 2017-11-15 10:56:56 -08:00
dptf License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfit Merge branch 'for-4.16/nfit' into libnvdimm-for-next 2018-02-03 00:26:26 -07:00
pmic ACPI / PMIC: Convert to use builtin_platform_driver() macro 2018-01-11 02:17:41 +01:00
x86 ACPI / x86: Extend KIOX000A quirk to cover all affected BIOS versions 2017-10-21 13:24:53 +02:00
ac.c ACPI: Mark expected switch fall-throughs 2017-11-09 00:55:16 +01:00
acpi_amba.c
acpi_apd.c ACPI / APD: Add clock frequency for ThunderX2 I2C controller 2017-10-17 23:52:54 +02:00
acpi_cmos_rtc.c
acpi_configfs.c ACPI: configfs: make config_item_type const 2017-10-19 16:15:29 +02:00
acpi_dbg.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
acpi_extlog.c
acpi_ipmi.c
acpi_lpat.c ACPI / lpat: Fix typos in comments and kerneldoc style 2017-07-24 22:52:00 +02:00
acpi_lpit.c ACPI / LPIT: Export lpit_read_residency_count_address() 2018-02-04 15:55:52 +02:00
acpi_lpss.c ACPI / LPSS: Do not instiate platform_dev for devs without MMIO resources 2018-01-15 17:45:25 +01:00
acpi_memhotplug.c
acpi_pad.c
acpi_platform.c
acpi_pnp.c
acpi_processor.c ACPI: Mark expected switch fall-throughs 2017-11-09 00:55:16 +01:00
acpi_video.c ACPI / video: Use true for boolean value 2018-02-04 08:55:36 +01:00
acpi_watchdog.c ACPI / watchdog: properly initialize resources 2017-09-19 01:49:02 +02:00
battery.c ACPI / battery: Add quirk for Asus UX360UA and UX410UAK 2018-02-04 09:17:47 +01:00
battery.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bgrt.c ACPI: BGRT: constify attribute_group structures 2017-07-04 22:15:20 +02:00
blacklist.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
bus.c More ACPI updates for v4.16-rc1 2018-02-09 09:44:25 -08:00
button.c ACPI: button: Add a LID switch blacklist and add 1 model to it 2017-12-13 01:05:02 +01:00
cm_sbs.c
container.c
cppc_acpi.c ACPI / CPPC: Use 64-bit arithmetic instead of 32-bit 2018-02-07 11:15:02 +01:00
custom_method.c
debugfs.c
device_pm.c Merge back PM core material for v4.16. 2017-12-16 02:05:48 +01:00
device_sysfs.c treewide: Use DEVICE_ATTR_RO 2018-01-09 16:34:34 +01:00
dock.c ACPI: Mark expected switch fall-throughs 2017-11-09 00:55:16 +01:00
ec.c ACPI: EC: Fix debugfs_create_*() usage 2018-01-04 13:54:51 +01:00
ec_sys.c ACPI: EC: Fix debugfs_create_*() usage 2018-01-04 13:54:51 +01:00
event.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
evged.c ACPI: GED: unregister interrupts during shutdown 2017-12-16 03:05:37 +01:00
fan.c
glue.c
hed.c
internal.h ACPI: EC: Fix debugfs_create_*() usage 2018-01-04 13:54:51 +01:00
ioapic.c ACPI: fix whitespace in pr_fmt() to align log entries 2017-06-22 02:18:20 +02:00
irq.c ACPI / irq: Fix return code of acpi_gsi_to_irq() 2017-07-12 13:11:49 +02:00
Kconfig More ACPI updates for v4.16-rc1 2018-02-09 09:44:25 -08:00
Makefile - New Drivers 2017-11-16 09:15:57 -08:00
numa.c ACPI / NUMA: ia64: Parse all entries of SRAT memory affinity table 2017-11-27 01:19:52 +01:00
nvs.c
osi.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
osl.c ACPI / LPIT: Add Low Power Idle Table (LPIT) support 2017-10-11 15:38:10 +02:00
pci_irq.c
pci_link.c ACPI/PCI: pci_link: reduce verbosity when IRQ is enabled 2018-01-17 12:53:04 +01:00
pci_mcfg.c
pci_root.c PCI/portdrv: Simplify PCIe feature permission checking 2018-03-30 17:26:54 -05:00
pci_slot.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
power.c ACPI / power: constify attribute_group structures 2017-07-04 22:15:14 +02:00
proc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
processor_core.c
processor_driver.c ACPI: processor: use dev_dbg() instead of dev_warn() when CPPC probe failed 2017-07-27 01:51:06 +02:00
processor_idle.c More ACPI updates for v4.16-rc1 2018-02-09 09:44:25 -08:00
processor_pdc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
processor_perflib.c ACPI: processor_perflib: Do not send _PPC change notification if not ready 2018-02-04 09:14:50 +01:00
processor_thermal.c
processor_throttling.c
property.c ACPI: properties: Implement get_match_data() callback 2017-12-13 14:10:58 +05:30
reboot.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
resource.c ACPI: Mark expected switch fall-throughs 2017-11-09 00:55:16 +01:00
sbs.c Merge branches 'acpi-video', 'acpi-battery', 'acpi-spcr' and 'acpi-misc' 2017-09-03 23:54:29 +02:00
sbshc.c ACPI: sbshc: remove raw pointer from printk() message 2018-02-08 09:50:08 +01:00
sbshc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
scan.c ACPI / scan: Use acpi_bus_get_status() to initialize ACPI_TYPE_DEVICE devs 2018-02-04 09:11:56 +01:00
sleep.c ACPI / PM: Use Low Power S0 Idle on more systems 2018-01-11 18:54:31 +01:00
sleep.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spcr.c ACPI: SPCR: Make SPCR available to x86 2018-02-07 11:39:58 +01:00
sysfs.c ACPI: sysfs: Make ACPI GPE mask kernel parameter cover all GPEs 2017-12-13 01:11:33 +01:00
tables.c ACPI / tables: Add IORT to injectable table list 2018-02-07 11:06:48 +01:00
thermal.c dmi: Mark all struct dmi_system_id instances const 2017-09-14 11:59:30 +02:00
utils.c ACPI: utils: Introduce acpi_dev_get_first_match_name() 2018-01-10 00:41:43 +01:00
video_detect.c ACPI / video: Add force_none quirk for Dell OptiPlex 9020M 2017-07-16 02:27:23 +02:00
wakeup.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00