P-state software coordination for ACPI core

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>

2 files changed, 30 insertions, 1 deletions

diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index badf0277b1be..0c46d1b3dda2 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -3,6 +3,7 @@
 
 #include <linux/kernel.h>
 #include <linux/config.h>
+#include <linux/cpu.h>
 
 #include <asm/acpi.h>
 
@@ -18,6 +19,17 @@
 
 #define ACPI_PDC_REVISION_ID            0x1
 
+#define ACPI_PSD_REV0_REVISION          0 /* Support for _PSD as in ACPI 3.0 */
+#define ACPI_PSD_REV0_ENTRIES           5
+
+/*
+ * Types of coordination defined in ACPI 3.0. Same macros can be used across
+ * P, C and T states
+ */
+#define DOMAIN_COORD_TYPE_SW_ALL        0xfc
+#define DOMAIN_COORD_TYPE_SW_ANY        0xfd
+#define DOMAIN_COORD_TYPE_HW_ALL        0xfe
+
 /* Power Management */
 
 struct acpi_processor_cx;
@@ -66,6 +78,14 @@ struct acpi_processor_power {
 
 /* Performance Management */
 
+struct acpi_psd_package {
+        acpi_integer num_entries;
+        acpi_integer revision;
+        acpi_integer domain;
+        acpi_integer coord_type;
+        acpi_integer num_processors;
+} __attribute__ ((packed));
+
 struct acpi_pct_register {
         u8 descriptor;
         u16 length;
@@ -92,7 +112,9 @@ struct acpi_processor_performance {
         struct acpi_pct_register status_register;
         unsigned int state_count;
         struct acpi_processor_px *states;
-
+        struct acpi_psd_package domain_info;
+        cpumask_t shared_cpu_map;
+        unsigned int shared_type;
 };
 
 /* Throttling Control */
@@ -161,6 +183,9 @@ struct acpi_processor_errata {
         } piix4;
 };
 
+extern int acpi_processor_preregister_performance(
+                struct acpi_processor_performance **performance);
+
 extern int acpi_processor_register_performance(struct acpi_processor_performance
                                                *performance, unsigned int cpu);
 extern void acpi_processor_unregister_performance(struct
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 17866d7e2b71..f7d988366941 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -73,6 +73,8 @@ struct cpufreq_real_policy {
 
 struct cpufreq_policy {
         cpumask_t               cpus;   /* affected CPUs */
+        unsigned int            shared_type; /* ANY or ALL affected CPUs
+                                                should set cpufreq */
         unsigned int            cpu;    /* cpu nr of registered CPU */
         struct cpufreq_cpuinfo  cpuinfo;/* see above */
 
@@ -99,6 +101,8 @@ struct cpufreq_policy {
 #define CPUFREQ_INCOMPATIBLE    (1)
 #define CPUFREQ_NOTIFY          (2)
 
+#define CPUFREQ_SHARED_TYPE_ALL (0) /* All dependent CPUs should set freq */
+#define CPUFREQ_SHARED_TYPE_ANY (1) /* Freq can be set from any dependent CPU */
 
 /******************** cpufreq transition notifiers *******************/