linux-sg2042/include/acpi
Venkatesh Pallipadi 991528d734 ACPI: Processor native C-states using MWAIT
Intel processors starting with the Core Duo support
support processor native C-state using the MWAIT instruction.
Refer: Intel Architecture Software Developer's Manual
http://www.intel.com/design/Pentium4/manuals/253668.htm

Platform firmware exports the support for Native C-state to OS using
ACPI _PDC and _CST methods.
Refer: Intel Processor Vendor-Specific ACPI: Interface Specification
http://www.intel.com/technology/iapc/acpi/downloads/302223.htm

With Processor Native C-state, we use 'MWAIT' instruction on the processor
to enter different C-states (C1, C2, C3).  We won't use the special IO
ports to enter C-state and no SMM mode etc required to enter C-state.
Overall this will mean better C-state support.

One major advantage of using MWAIT for all C-states is, with this and
"treat interrupt as break event" feature of MWAIT, we can now get accurate
timing for the time spent in C1, C2, ..  states.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2006-10-14 00:35:39 -04:00
..
platform Pull acpi_os_allocate into test branch 2006-07-10 02:39:47 -04:00
acconfig.h ACPI: ACPICA 20060707 2006-07-09 15:15:40 -04:00
acdebug.h [ACPI] ACPICA 20060113 2006-01-20 02:23:50 -05:00
acdisasm.h ACPI: ACPICA 20060512 2006-06-14 02:34:48 -04:00
acdispat.h ACPI: ACPICA 20060623 2006-06-28 03:11:38 -04:00
acevents.h ACPI: ACPICA 20060512 2006-06-14 02:34:48 -04:00
acexcep.h ACPI: ACPICA 20060421 2006-06-14 02:30:55 -04:00
acglobal.h ACPI: ACPICA 20060623 2006-06-28 03:11:38 -04:00
achware.h [ACPI] ACPICA 20060113 2006-01-20 02:23:50 -05:00
acinterp.h ACPI: ACPICA 20060707 2006-07-09 15:15:40 -04:00
aclocal.h ACPI: Allow setting SCI_EN bit in PM1_CONTROL register 2006-10-10 17:14:44 -07:00
acmacros.h ACPI: acpi_os_allocate() fixes 2006-07-10 02:37:22 -04:00
acnames.h [ACPI] ACPICA 20060113 2006-01-20 02:23:50 -05:00
acnamesp.h ACPI: ACPICA 20060526 2006-06-14 02:44:35 -04:00
acobject.h ACPI: ACPICA 20060623 2006-06-28 03:11:38 -04:00
acopcode.h ACPI: ACPICA 20060526 2006-06-14 02:44:35 -04:00
acoutput.h ACPI: ACPICA 20060421 2006-06-14 02:30:55 -04:00
acparser.h ACPI: ACPICA 20060526 2006-06-14 02:44:35 -04:00
acpi.h [ACPI] ACPICA 20060113 2006-01-20 02:23:50 -05:00
acpi_bus.h Revert "ACPI: dock driver" 2006-07-09 08:47:46 -07:00
acpi_drivers.h Revert "ACPI: dock driver" 2006-07-09 08:47:46 -07:00
acpi_numa.h [PATCH] Unify pxm_to_node() and node_to_pxm() 2006-06-23 07:42:48 -07:00
acpiosxf.h ACPI: delete acpi_os_free(), use kfree() directly 2006-06-30 03:19:10 -04:00
acpixf.h [ACPI] ACPICA 20060317 2006-06-14 01:22:20 -04:00
acresrc.h ACPI: ACPICA 20060707 2006-07-09 15:15:40 -04:00
acstruct.h ACPI: ACPICA 20060526 2006-06-14 02:44:35 -04:00
actables.h ACPI: ACPICA 20060331 2006-06-14 02:04:16 -04:00
actbl.h ACPI: ACPICA 20060512 2006-06-14 02:34:48 -04:00
actbl1.h ACPI: ACPICA 20060331 2006-06-14 02:04:16 -04:00
actbl2.h ACPI: ACPICA 20060331 2006-06-14 02:04:16 -04:00
actbl71.h [ACPI] Lindent all ACPI files 2005-08-05 00:45:14 -04:00
actypes.h ACPI: ACPICA 20060623 2006-06-28 03:11:38 -04:00
acutils.h ACPI: ACPICA 20060421 2006-06-14 02:30:55 -04:00
amlcode.h ACPI: ACPICA 20060512 2006-06-14 02:34:48 -04:00
amlresrc.h ACPI: ACPICA 20060512 2006-06-14 02:34:48 -04:00
container.h [ACPI] Lindent all ACPI files 2005-08-05 00:45:14 -04:00
pdc_intel.h ACPI: Processor native C-states using MWAIT 2006-10-14 00:35:39 -04:00
processor.h ACPI: Processor native C-states using MWAIT 2006-10-14 00:35:39 -04:00