diff options
| author | Jan Beulich <jbeulich@novell.com> | 2011-08-22 10:12:36 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@novell.com> | 2011-08-22 10:12:36 +0100 |
| commit | 1d6ffea6d04357f92cca684d44e7bed44de7cbcd (patch) | |
| tree | 1a3f9ed447979a7120ee8a10ca1b546c0c366ef9 /xen/include/acpi | |
| parent | 2fba91e1d95292860076efce894c850413de8a15 (diff) | |
| download | xen-1d6ffea6d04357f92cca684d44e7bed44de7cbcd.tar.gz xen-1d6ffea6d04357f92cca684d44e7bed44de7cbcd.tar.bz2 xen-1d6ffea6d04357f92cca684d44e7bed44de7cbcd.zip | |
ACPI: add _PDC input override mechanism
In order to have Dom0 call _PDC with input fully representing Xen's
capabilities, and in order to avoid building knowledge of Xen
implementation details into Dom0, this provides a mechanism by which
the Dom0 kernel can, once it filled the _PDC input buffer according to
its own knowledge, present the buffer to Xen to apply overrides for
the parts of the C-, P-, and T-state management that it controls. This
is particularly to address the dependency of Xen using MWAIT to enter
certain C-states on the availability of the break-on-interrupt
extension (which the Dom0 kernel should have no need to know about).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Diffstat (limited to 'xen/include/acpi')
| -rw-r--r-- | xen/include/acpi/cpufreq/processor_perf.h | 2 | ||||
| -rw-r--r-- | xen/include/acpi/pdc_intel.h | 17 |
2 files changed, 18 insertions, 1 deletions
diff --git a/xen/include/acpi/cpufreq/processor_perf.h b/xen/include/acpi/cpufreq/processor_perf.h index 7ad75e29fc..b909796e1a 100644 --- a/xen/include/acpi/cpufreq/processor_perf.h +++ b/xen/include/acpi/cpufreq/processor_perf.h @@ -3,10 +3,10 @@ #include <public/platform.h> #include <public/sysctl.h> +#include <xen/acpi.h> #define XEN_PX_INIT 0x80000000 -int get_cpu_id(u32); int powernow_cpufreq_init(void); unsigned int powernow_register_driver(void); unsigned int get_measured_perf(unsigned int cpu, unsigned int flag); diff --git a/xen/include/acpi/pdc_intel.h b/xen/include/acpi/pdc_intel.h index e72bfdd887..4fb719d6f5 100644 --- a/xen/include/acpi/pdc_intel.h +++ b/xen/include/acpi/pdc_intel.h @@ -4,6 +4,8 @@ #ifndef __PDC_INTEL_H__ #define __PDC_INTEL_H__ +#define ACPI_PDC_REVISION_ID 1 + #define ACPI_PDC_P_FFH (0x0001) #define ACPI_PDC_C_C1_HALT (0x0002) #define ACPI_PDC_T_FFH (0x0004) @@ -14,6 +16,7 @@ #define ACPI_PDC_SMP_T_SWCOORD (0x0080) #define ACPI_PDC_C_C1_FFH (0x0100) #define ACPI_PDC_C_C2C3_FFH (0x0200) +#define ACPI_PDC_SMP_P_HWCOORD (0x0800) #define ACPI_PDC_EST_CAPABILITY_SMP (ACPI_PDC_SMP_C1PT | \ ACPI_PDC_C_C1_HALT | \ @@ -22,6 +25,7 @@ #define ACPI_PDC_EST_CAPABILITY_SWSMP (ACPI_PDC_SMP_C1PT | \ ACPI_PDC_C_C1_HALT | \ ACPI_PDC_SMP_P_SWCOORD | \ + ACPI_PDC_SMP_P_HWCOORD | \ ACPI_PDC_P_FFH) #define ACPI_PDC_C_CAPABILITY_SMP (ACPI_PDC_SMP_C2C3 | \ @@ -30,4 +34,17 @@ ACPI_PDC_C_C1_FFH | \ ACPI_PDC_C_C2C3_FFH) +#define ACPI_PDC_C_MASK (ACPI_PDC_C_C1_HALT | \ + ACPI_PDC_C_C1_FFH | \ + ACPI_PDC_SMP_C2C3 | \ + ACPI_PDC_SMP_C_SWCOORD | \ + ACPI_PDC_C_C2C3_FFH) + +#define ACPI_PDC_P_MASK (ACPI_PDC_P_FFH | \ + ACPI_PDC_SMP_P_SWCOORD | \ + ACPI_PDC_SMP_P_HWCOORD) + +#define ACPI_PDC_T_MASK (ACPI_PDC_T_FFH | \ + ACPI_PDC_SMP_T_SWCOORD) + #endif /* __PDC_INTEL_H__ */ |