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freebsd-dev/sys/dev/acpica
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Andriy Gapon f1e1ddc3d9 acpi_cpu: fixup for PIIX4E PCI config related to C2 
This is triggered only if BIOS configures ACPI_BITREG_BUS_MASTER_RLD
aka BRLD_EN_BM to 1.
Rationale:
1. we do not support C3 on PIIX4E
2. bus master activity need not break out of C2 state
3. because of CPU_QUIRK_NO_BM_CTRL quirk we may reset bus master
   status which would result in immediate break out from C2

So if you have seen
cpu0: too many short sleeps, backing off to C1
with this chipset before you may want to try cx_lowest of C2 again.

Reviewed by: rpaulo (mentor), njl
Approved by: rpaulo (mentor)
2009-02-19 14:39:52 +00:00
..
Osd Remove " + 1". 2008-11-03 18:28:12 +00:00
acpi_acad.c Catch up with ACPI-CA 20070320 import. 2007-03-22 18:16:43 +00:00
acpi_battery.c Convert battery capacity/rate from mA to mW only when summary is requested. 2009-01-17 17:40:44 +00:00
acpi_button.c Catch up with ACPI-CA 20070320 import. 2007-03-22 18:16:43 +00:00
acpi_cmbat.c Catch up with ACPI-CA 20070320 import. 2007-03-22 18:16:43 +00:00
acpi_cpu.c acpi_cpu: fixup for PIIX4E PCI config related to C2 2009-02-19 14:39:52 +00:00
acpi_dock.c Use ACPICA defined value for notification rather than locally defined one. 2007-05-31 08:49:51 +00:00
acpi_ec.c Whitespace only. 2007-11-08 21:20:34 +00:00
acpi_hpet.c Make sure legacy replacement route is turned off when enbling HPET. 2008-11-19 20:31:38 +00:00
acpi_hpet.h Add a header containing constants for the various HPET registers and their 2008-01-16 18:47:07 +00:00
acpi_if.m Canonize the include of acpi.h. 2005-09-11 18:39:03 +00:00
acpi_isab.c Canonize the include of acpi.h. 2005-09-11 18:39:03 +00:00
acpi_lid.c Catch up with ACPI-CA 20070320 import. 2007-03-22 18:16:43 +00:00
acpi_package.c Re-work Cx handling to be per-cpu and asymmetrical, fixing support on 2007-01-07 21:53:42 +00:00
acpi_pci_link.c Don't return an error from resume() if execution of _DIS fails for some 2007-10-27 22:14:17 +00:00
acpi_pci.c Don't destroy an ACPI device_t for a PCI device and reassign the ACPI 2007-10-27 14:54:43 +00:00
acpi_pcib_acpi.c pcib_read_config and pcib_write_config take u_int params. 2009-02-05 18:40:42 +00:00
acpi_pcib_pci.c Revamp the MSI/MSI-X code a bit to achieve two main goals: 2007-05-02 17:50:36 +00:00
acpi_pcib.c Remove unused variable. 2008-11-25 19:06:20 +00:00
acpi_pcibvar.h Protect against multiple includes and use _KERNEL to protect the PCI fns. 2005-02-28 05:39:34 +00:00
acpi_perf.c Catch up with ACPI-CA 20070320 import. 2007-03-22 18:16:43 +00:00
acpi_powerres.c Remove unnecessary assignment. 2006-04-21 19:06:29 +00:00
acpi_quirk.c Clean up DSDT and XSDT correctly instead of FADT when the tables are bad. 2008-09-19 15:25:13 +00:00
acpi_quirks Add a quirk for a motherboard whose acpi timer runs too fast. 2005-06-26 18:19:14 +00:00
acpi_resource.c Catch up with ACPI-CA 20070320 import. 2007-03-22 18:16:43 +00:00
acpi_smbat.c Quick change to r186026. One of the conditionals was: 2008-12-13 07:45:48 +00:00
acpi_smbus.h Import ACPI smart battery support. Newer systems (Acer, mostly) do not 2005-10-23 00:20:13 +00:00
acpi_thermal.c Initialize tz_active to a new constant TZ_ACTIVE_UNKNOWN and make no 2008-04-25 16:45:13 +00:00
acpi_throttle.c Catch up with ACPI-CA 20070320 import. 2007-03-22 18:16:43 +00:00
acpi_timer.c Dynamically choose the quality of the ACPI timer depending on whether 2007-07-30 15:21:26 +00:00
acpi_video.c Improve the way we'll detect video devices as per ACPI 3.0. 2006-08-10 13:18:02 +00:00
acpi.c Allow device hints to wire the unit numbers of devices. 2008-11-18 21:01:54 +00:00
acpiio.h Update the suspend/resume user API while maintaining backwards compat. 2007-06-21 22:50:37 +00:00
acpivar.h Rework how the nexus(4) device works on x86 to better handle the idea of 2008-03-13 20:39:04 +00:00