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authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>2005-04-15 23:07:10 +0400
committerLen Brown <len.brown@intel.com>2005-07-12 08:14:36 +0400
commit02df8b9385c21fdba165bd380f60eca1d3b0578b (patch)
tree988ad0e0ca73a40993fb1458d5cd19f90f922b31 /include/acpi
parent17e9c78a75ce9eacd61200f9e1f1924012e28846 (diff)
downloadlinux-02df8b9385c21fdba165bd380f60eca1d3b0578b.tar.xz
[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>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/pdc_intel.h29
-rw-r--r--include/acpi/processor.h34
2 files changed, 61 insertions, 2 deletions
diff --git a/include/acpi/pdc_intel.h b/include/acpi/pdc_intel.h
new file mode 100644
index 000000000000..fd6730e4e567
--- /dev/null
+++ b/include/acpi/pdc_intel.h
@@ -0,0 +1,29 @@
+
+/* _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_PDC_C_C1_HALT)
+
+#define ACPI_PDC_EST_CAPABILITY_SMP_MSR (ACPI_PDC_EST_CAPABILITY_SMP | \
+ ACPI_PDC_P_FFH)
+
+#define ACPI_PDC_C_CAPABILITY_SMP (ACPI_PDC_SMP_C2C3 | \
+ ACPI_PDC_SMP_C1PT | \
+ ACPI_PDC_C_C1_HALT)
+
+#endif /* __PDC_INTEL_H__ */
+
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 2f50a5bb0c78..50cfea4ff6ca 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -4,6 +4,8 @@
#include <linux/kernel.h>
#include <linux/config.h>
+#include <asm/acpi.h>
+
#define ACPI_PROCESSOR_BUSY_METRIC 10
#define ACPI_PROCESSOR_MAX_POWER 8
@@ -14,6 +16,8 @@
#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
+#define ACPI_PDC_REVISION_ID 0x1
+
/* Power Management */
struct acpi_processor_cx;
@@ -59,6 +63,9 @@ struct acpi_processor_power {
u32 bm_activity;
int count;
struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
+
+ /* the _PDC objects passed by the driver, if any */
+ struct acpi_object_list *pdc;
};
/* Performance Management */
@@ -82,8 +89,6 @@ struct acpi_processor_px {
acpi_integer status; /* success indicator */
};
-#define ACPI_PDC_REVISION_ID 0x1
-
struct acpi_processor_performance {
unsigned int state;
unsigned int platform_limit;
@@ -179,7 +184,32 @@ int acpi_processor_notify_smm(struct module *calling_module);
extern struct acpi_processor *processors[NR_CPUS];
extern struct acpi_processor_errata errata;
+int acpi_processor_set_pdc(struct acpi_processor *pr,
+ struct acpi_object_list *pdc_in);
+
+#ifdef ARCH_HAS_POWER_PDC_INIT
+void acpi_processor_power_init_pdc(struct acpi_processor_power *pow,
+ unsigned int cpu);
+void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
+ unsigned int cpu);
+#else
+static inline void acpi_processor_power_init_pdc(
+ struct acpi_processor_power *pow, unsigned int cpu)
+{
+ pow->pdc = NULL;
+ return;
+}
+
+static inline void acpi_processor_power_init_bm_check(
+ struct acpi_processor_flags *flags, unsigned int cpu)
+{
+ flags->bm_check = 1;
+ return;
+}
+#endif
+
/* in processor_perflib.c */
+
#ifdef CONFIG_CPU_FREQ
void acpi_processor_ppc_init(void);
void acpi_processor_ppc_exit(void);