OpenSDV
/
linux-stable-rt
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
linux-stable-rt/include/acpi/pdc_intel.h

31 lines
836 B
C
Raw Normal View History

[ACPI] enable C2 and C3 idle power states on SMP http://bugzilla.kernel.org/show_bug.cgi?id=4401 Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-16 03:07:10 +08:00
/* _PDC bit definition for Intel processors */
#ifndef __PDC_INTEL_H__
#define __PDC_INTEL_H__
#define ACPI_PDC_P_FFH (0x0001)
#define ACPI_PDC_C_C1_HALT (0x0002)
#define ACPI_PDC_T_FFH (0x0004)
#define ACPI_PDC_SMP_C1PT (0x0008)
#define ACPI_PDC_SMP_C2C3 (0x0010)
#define ACPI_PDC_SMP_P_SWCOORD (0x0020)
#define ACPI_PDC_SMP_C_SWCOORD (0x0040)
#define ACPI_PDC_SMP_T_SWCOORD (0x0080)
#define ACPI_PDC_C_C1_FFH (0x0100)
#define ACPI_PDC_EST_CAPABILITY_SMP (ACPI_PDC_SMP_C1PT | \
[ACPI] Avoid BIOS inflicted crashes by evaluating _PDC only once Linux invokes the AML _PDC method (Processor Driver Capabilities) to tell the BIOS what features it can handle. While the ACPI spec says nothing about the OS invoking _PDC multiple times, doing so with changing bits seems to hopelessly confuse the BIOS on multiple platforms up to and including crashing the system. Factor out the _PDC invocation so Linux invokes it only once. http://bugzilla.kernel.org/show_bug.cgi?id=5483 Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2005-10-24 04:31:00 +08:00
ACPI_PDC_C_C1_HALT | \
[ACPI] enable C2 and C3 idle power states on SMP http://bugzilla.kernel.org/show_bug.cgi?id=4401 Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-16 03:07:10 +08:00
ACPI_PDC_P_FFH)
Enable P-state software coordination via _PDC http://bugzilla.kernel.org/show_bug.cgi?id=5737 Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2005-12-15 04:05:00 +08:00
#define ACPI_PDC_EST_CAPABILITY_SWSMP (ACPI_PDC_SMP_C1PT | \
ACPI_PDC_C_C1_HALT | \
ACPI_PDC_SMP_P_SWCOORD | \
ACPI_PDC_P_FFH)
[ACPI] enable C2 and C3 idle power states on SMP http://bugzilla.kernel.org/show_bug.cgi?id=4401 Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2005-04-16 03:07:10 +08:00
#define ACPI_PDC_C_CAPABILITY_SMP (ACPI_PDC_SMP_C2C3 | \
ACPI_PDC_SMP_C1PT | \
ACPI_PDC_C_C1_HALT)
[ACPI] Lindent all ACPI files Signed-off-by: Len Brown <len.brown@intel.com>
2005-08-05 12:44:28 +08:00
#endif /* __PDC_INTEL_H__ */