lkml.org 
[lkml]   [2022]   [Jan]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 2/7] x86/cpu: Add definitions for the Intel Hardware Feedback Interface
Date
Add the CPUID feature bit and the model-specific registers needed to
identify and configure the Intel Hardware Feedback Interface.

Cc: Andi Kleen <ak@linux.intel.com>
Cc: Aubrey Li <aubrey.li@linux.intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: "Ravi V. Shankar" <ravi.v.shankar@intel.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
---
Changes since v2:
* Replaced subject prefix to be "x86/cpu:". (Boris)

Changes since v1:
* Renamed X86_FEATURE_INTEL_HFI as X86_FEATURE_HFI. (Boris)
---
arch/x86/include/asm/cpufeatures.h | 1 +
arch/x86/include/asm/msr-index.h | 6 ++++++
2 files changed, 7 insertions(+)

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index d5b5f2ab87a0..1a31b3ef15f0 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -327,6 +327,7 @@
#define X86_FEATURE_HWP_ACT_WINDOW (14*32+ 9) /* HWP Activity Window */
#define X86_FEATURE_HWP_EPP (14*32+10) /* HWP Energy Perf. Preference */
#define X86_FEATURE_HWP_PKG_REQ (14*32+11) /* HWP Package Level Request */
+#define X86_FEATURE_HFI (14*32+19) /* Hardware Feedback Interface */

/* AMD SVM Feature Identification, CPUID level 0x8000000a (EDX), word 15 */
#define X86_FEATURE_NPT (15*32+ 0) /* Nested Page Table support */
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 01e2650b9585..ad958a49b2bb 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -687,12 +687,14 @@

#define PACKAGE_THERM_STATUS_PROCHOT (1 << 0)
#define PACKAGE_THERM_STATUS_POWER_LIMIT (1 << 10)
+#define PACKAGE_THERM_STATUS_HFI_UPDATED (1 << 26)

#define MSR_IA32_PACKAGE_THERM_INTERRUPT 0x000001b2

#define PACKAGE_THERM_INT_HIGH_ENABLE (1 << 0)
#define PACKAGE_THERM_INT_LOW_ENABLE (1 << 1)
#define PACKAGE_THERM_INT_PLN_ENABLE (1 << 24)
+#define PACKAGE_THERM_INT_HFI_ENABLE (1 << 25)

/* Thermal Thresholds Support */
#define THERM_INT_THRESHOLD0_ENABLE (1 << 15)
@@ -941,4 +943,8 @@
#define MSR_VM_IGNNE 0xc0010115
#define MSR_VM_HSAVE_PA 0xc0010117

+/* Hardware Feedback Interface */
+#define MSR_IA32_HW_FEEDBACK_PTR 0x17d0
+#define MSR_IA32_HW_FEEDBACK_CONFIG 0x17d1
+
#endif /* _ASM_X86_MSR_INDEX_H */
--
2.17.1
\
 
 \ /
  Last update: 2022-01-06 03:50    [W:0.075 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site