[PATCH 1/4] x86/thermal: Add bit definitions for Intel Directed Package Thermal Interrupt

[Ricardo Neri]

Add CPUID and MSR bit definitions required to support Intel Directed
Package Thermal Interrupts.

A CPU requests directed package-level thermal interrupts by setting bit 25
in IA32_THERM_INTERRUPT. Hardware acknowledges by setting bit 25 in
IA32_PACKAGE_THERM_STATUS, indicating that only CPUs that opted in will
receive the interrupt. If no CPU in the package requests it, delivery
falls back to broadcast.

Signed-off-by: Ricardo Neri <ricardo.neri-calderon@xxxxxxxxxxxxxxx>
---
 arch/x86/include/asm/cpufeatures.h | 1 +
 arch/x86/include/asm/msr-index.h   | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index dbe104df339b..487bf9da0cef 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -364,6 +364,7 @@
 #define X86_FEATURE_HWP_PKG_REQ		(14*32+11) /* "hwp_pkg_req" HWP Package Level Request */
 #define X86_FEATURE_HWP_HIGHEST_PERF_CHANGE (14*32+15) /* HWP Highest perf change */
 #define X86_FEATURE_HFI			(14*32+19) /* "hfi" Hardware Feedback Interface */
+#define X86_FEATURE_DIRECTED_PKG_THRM_INTR (14*32+24) /* Intel Directed Package Thermal Interrupt */
 
 /* AMD SVM Feature Identification, CPUID level 0x8000000a (EDX), word 15 */
 #define X86_FEATURE_NPT			(15*32+ 0) /* "npt" Nested Page Table support */
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 6673601246b3..aa1c652a9581 100644
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -995,6 +995,7 @@
 #define THERM_INT_HIGH_ENABLE		(1 << 0)
 #define THERM_INT_LOW_ENABLE		(1 << 1)
 #define THERM_INT_PLN_ENABLE		(1 << 24)
+#define THERM_DIRECTED_INTR_ENABLE	(1 << 25)
 
 #define MSR_IA32_THERM_STATUS		0x0000019c
 
@@ -1024,6 +1025,7 @@
 
 #define PACKAGE_THERM_STATUS_PROCHOT		(1 << 0)
 #define PACKAGE_THERM_STATUS_POWER_LIMIT	(1 << 10)
+#define PACKAGE_THERM_STATUS_DIRECTED_INTR_ACK	(1 << 25)
 #define PACKAGE_THERM_STATUS_HFI_UPDATED	(1 << 26)
 
 #define MSR_IA32_PACKAGE_THERM_INTERRUPT	0x000001b2

-- 
2.43.0