[PATCH 02/19] x86/msr: add AMD CPPC MSR definitions

Huang Rui
2021-09-08T15:01:33Z

AMD CPPC (Collaborative Processor Performance Control) function uses MSR
registers to manage the performance hints. So add the MSR register macro
here.

Signed-off-by: Huang Rui <ray.huang@amd.com>
---
arch/x86/include/asm/msr-index.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index a7c413432b33..ce42e15cf303 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -486,6 +486,23 @@

#define MSR_AMD64_VIRT_SPEC_CTRL 0xc001011f

+/* AMD Collaborative Processor Performance Control MSRs */
+#define MSR_AMD_CPPC_CAP1 0xc00102b0
+#define MSR_AMD_CPPC_ENABLE 0xc00102b1
+#define MSR_AMD_CPPC_CAP2 0xc00102b2
+#define MSR_AMD_CPPC_REQ 0xc00102b3
+#define MSR_AMD_CPPC_STATUS 0xc00102b4
+
+#define CAP1_LOWEST_PERF(x) (((x) >> 0) & 0xff)
+#define CAP1_LOWNONLIN_PERF(x) (((x) >> 8) & 0xff)
+#define CAP1_NOMINAL_PERF(x) (((x) >> 16) & 0xff)
+#define CAP1_HIGHEST_PERF(x) (((x) >> 24) & 0xff)
+
+#define REQ_MAX_PERF(x) (((x) & 0xff) << 0)
+#define REQ_MIN_PERF(x) (((x) & 0xff) << 8)
+#define REQ_DES_PERF(x) (((x) & 0xff) << 16)
+#define REQ_ENERGY_PERF_PREF(x) (((x) & 0xff) << 24)
+
/* Fam 17h MSRs */
#define MSR_F17H_IRPERF 0xc00000e9

--
2.25.1