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kernel: Add cpufreq module for Intel P-states

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Since Sandy Bridge managing P-states on Intel processors is much easier
and more powerful than when using previous versions of EIST.
This commit is contained in:
Pawel Dziepak
2013-10-30 00:55:03 +01:00
parent 1e3cf82d85
commit 9c0ff0eed1
8 changed files with 259 additions and 0 deletions
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headers/private/kernel/arch/x86/arch_cpu.h
+6
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@@ -31,10 +31,16 @@
#define IA32_MSR_TSC 0x10
#define IA32_MSR_APIC_BASE 0x1b
#define IA32_MSR_PLATFORM_INFO 0xce
#define IA32_MSR_MPERF 0xe7
#define IA32_MSR_APERF 0xe8
#define IA32_MSR_MTRR_CAPABILITIES 0xfe
#define IA32_MSR_SYSENTER_CS 0x174
#define IA32_MSR_SYSENTER_ESP 0x175
#define IA32_MSR_SYSENTER_EIP 0x176
#define IA32_MSR_PERF_STATUS 0x198
#define IA32_MSR_PERF_CTL 0x199
#define IA32_MSR_TURBO_RATIO_LIMIT 0x1ad
#define IA32_MSR_ENERGY_PERF_BIAS 0x1b0
#define IA32_MSR_MTRR_DEFAULT_TYPE 0x2ff
#define IA32_MSR_MTRR_PHYSICAL_BASE_0 0x200