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b57a73f8e7
freebsd-dev/sys/dev/acpica
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Konstantin Belousov b57a73f8e7 If x86 CPU implementation of the MWAIT instruction reasonably 
interacts with interrupts, query ACPI and use MWAIT for entrance into
Cx sleep states.  Support C1 "I/O then halt" mode.  See Intel'
document 302223-007 "Intelб╝ Processor Vendor-Specific ACPI Interface
Specification" for description.

Move the acpi_cpu_c1() function into x86/cpu_machdep.c and use
it instead of inlining "sti; hlt" sequence in several places.

In the acpi(4) man page, besides documenting the dev.cpu.N.cx_methods
sysctl, correct the names for dev.cpu.N.{cx_usage,cx_lowest,cx_supported}
sysctls.

Both jkim and avg have some other patches implementing the mwait
functionality; this work is unrelated.  Linux does not rely on the
ACPI to provide correct tables describing Cx modes.  Instead, the
driver has pre-defined knowledge of the CPU models, it was supplied by
Intel.

Tested by:    pho (previous versions)
Sponsored by:	The FreeBSD Foundation
2015-05-09 12:28:48 +00:00
..
Osd Merge ACPICA 20140926. 2014-10-02 19:11:18 +00:00
acpi_acad.c Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays 2013-01-30 18:01:20 +00:00
acpi_battery.c Prevent a division by zero with some broken batteries 2011-11-26 13:43:50 +00:00
acpi_button.c Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays 2013-01-30 18:01:20 +00:00
acpi_cmbat.c Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays 2013-01-30 18:01:20 +00:00
acpi_cpu.c If x86 CPU implementation of the MWAIT instruction reasonably 2015-05-09 12:28:48 +00:00
acpi_dock.c Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays 2013-01-30 18:01:20 +00:00
acpi_ec.c Simplify retry loops. No functional change. 2015-01-23 18:55:04 +00:00
acpi_hpet.c Set the caching mode for the usermode mapping of the HPET registers 2014-10-25 21:01:50 +00:00
acpi_hpet.h Always check current HPET counter value after comparator programming to 2011-08-16 21:51:29 +00:00
acpi_if.m
acpi_isab.c - There's no need to overwrite the default device method with the default 2011-11-22 21:28:20 +00:00
acpi_lid.c Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays 2013-01-30 18:01:20 +00:00
acpi_package.c If x86 CPU implementation of the MWAIT instruction reasonably 2015-05-09 12:28:48 +00:00
acpi_pci_link.c - Some BIOSes use an Extended IRQ resource descriptor in _PRS for a link 2013-04-22 15:51:06 +00:00
acpi_pci.c Implement interface to create SR-IOV Virtual Functions 2015-03-01 00:40:09 +00:00
acpi_pcib_acpi.c Merge ACPICA 20150410. 2015-04-11 03:23:41 +00:00
acpi_pcib_pci.c Add support for managing PCI bus numbers. As with BARs and PCI-PCI bridge 2014-02-12 04:30:37 +00:00
acpi_pcib.c Array cannot be NULL, remove always true comparision. ACPI spec 2015-02-16 22:18:43 +00:00
acpi_pcibvar.h
acpi_perf.c Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays 2013-01-30 18:01:20 +00:00
acpi_powerres.c Remove not needed initialisation code. 2014-06-26 10:48:01 +00:00
acpi_quirk.c
acpi_quirks
acpi_resource.c Merge ACPICA 20150410. 2015-04-11 03:23:41 +00:00
acpi_smbat.c Remove instances of variables that were set, but never used. gcc 4.9 2014-03-30 23:43:36 +00:00
acpi_smbus.h
acpi_thermal.c acpi_thermal: Warn about insane _TMP temperature only once 2013-08-30 19:21:12 +00:00
acpi_throttle.c Use DEVMETHOD_END macro defined in sys/bus.h instead of {0, 0} sentinel on device_method_t arrays 2013-01-30 18:01:20 +00:00
acpi_timer.c If the power management timer is unsupported the PmTimerLength value will 2015-05-06 14:09:54 +00:00
acpi_video.c Fix undefined behavior: (1 << 31) is not defined as 1 is an int and this 2013-11-30 22:17:27 +00:00
acpi.c AcpiGbl_FACS will not be defined when building using the reduced hardware 2015-05-06 14:14:14 +00:00
acpiio.h
acpivar.h If x86 CPU implementation of the MWAIT instruction reasonably 2015-05-09 12:28:48 +00:00