Merge pull request #253 from leoliu-oc/linux-6.6.y-01-cpu-topo-features

[linux-6.6.y] Add support for Zhaoxin Processors
deepin-community · Jul 3, 2024 · 843171e · 843171e
2 parents b6a0bbd + 28abea9
commit 843171e
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Showing 3 changed files with 32 additions and 2 deletions.
diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
@@ -150,6 +150,8 @@
 #define X86_FEATURE_SM2_EN		( 5*32+ 1) /* SM2 Zhaoxin GMI enabled */
 #define X86_FEATURE_XSTORE		( 5*32+ 2) /* "rng" RNG present (xstore) */
 #define X86_FEATURE_XSTORE_EN		( 5*32+ 3) /* "rng_en" RNG enabled */
+#define X86_FEATURE_CCS			( 5*32+ 4) /*  "sm3 sm4" present */
+#define X86_FEATURE_CCS_EN		( 5*32+ 5) /*  "sm3_en sm4_en" enabled */
 #define X86_FEATURE_XCRYPT		( 5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */
 #define X86_FEATURE_XCRYPT_EN		( 5*32+ 7) /* "ace_en" on-CPU crypto enabled */
 #define X86_FEATURE_ACE2		( 5*32+ 8) /* Advanced Cryptography Engine v2 */
@@ -158,6 +160,23 @@
 #define X86_FEATURE_PHE_EN		( 5*32+11) /* PHE enabled */
 #define X86_FEATURE_PMM			( 5*32+12) /* PadLock Montgomery Multiplier */
 #define X86_FEATURE_PMM_EN		( 5*32+13) /* PMM enabled */
+#define X86_FEATURE_ZX_FMA		( 5*32+15) /* FMA supported */
+#define X86_FEATURE_PARALLAX		( 5*32+16) /* Adaptive P-state control present */
+#define X86_FEATURE_PARALLAX_EN		( 5*32+17) /* Adaptive P-state control enabled */
+#define X86_FEATURE_OVERSTRESS		( 5*32+18) /* Overstress for auto overclock present */
+#define X86_FEATURE_OVERSTRESS_EN	( 5*32+19) /* Overstress for auto overclock enabled */
+#define X86_FEATURE_TM3			( 5*32+20) /* Thermal Monitor 3 present */
+#define X86_FEATURE_TM3_EN		( 5*32+21) /* Thermal Monitor 3 enabled */
+#define X86_FEATURE_RNG2		( 5*32+22) /* 2nd generation of RNG present */
+#define X86_FEATURE_RNG2_EN		( 5*32+23) /* 2nd generation of RNG enabled */
+#define X86_FEATURE_SEM			( 5*32+24) /* SME feature present */
+#define X86_FEATURE_PHE2		( 5*32+25) /* SHA384 and SHA 512 present */
+#define X86_FEATURE_PHE2_EN		( 5*32+26) /* SHA384 and SHA 512 enabled */
+#define X86_FEATURE_XMODX		( 5*32+27) /* "rsa" XMODEXP and MONTMUL2 are present */
+#define X86_FEATURE_XMODX_EN		( 5*32+28) /* "rsa_en" XMODEXP and MONTMUL2 are enabled */
+#define X86_FEATURE_VEX			( 5*32+29) /* VEX instructions are present */
+#define X86_FEATURE_VEX_EN		( 5*32+30) /* VEX instructions are enabled */
+#define X86_FEATURE_STK			( 5*32+31) /* STK are present */
 
 /* More extended AMD flags: CPUID level 0x80000001, ECX, word 6 */
 #define X86_FEATURE_LAHF_LM		( 6*32+ 0) /* LAHF/SAHF in long mode */

diff --git a/arch/x86/kernel/cpu/centaur.c b/arch/x86/kernel/cpu/centaur.c
@@ -112,6 +112,9 @@ static void early_init_centaur(struct cpuinfo_x86 *c)
 
 	if (cpuid_eax(0xC0000000) >= 0xC0000006)
 		c->x86_capability[CPUID_C000_0006_EAX] = cpuid_eax(0xC0000006);
+
+	if (detect_extended_topology_early(c) < 0)
+		detect_ht_early(c);
 }
 
 static void init_centaur(struct cpuinfo_x86 *c)
@@ -130,11 +133,14 @@ static void init_centaur(struct cpuinfo_x86 *c)
 	clear_cpu_cap(c, 0*32+31);
 #endif
 	early_init_centaur(c);
+	detect_extended_topology(c);
 	init_intel_cacheinfo(c);
-	detect_num_cpu_cores(c);
+	if (!cpu_has(c, X86_FEATURE_XTOPOLOGY)) {
+		detect_num_cpu_cores(c);
 #ifdef CONFIG_X86_32
 	detect_ht(c);
 #endif
+	}
 
 	if (c->cpuid_level > 9) {
 		unsigned int eax = cpuid_eax(10);

diff --git a/arch/x86/kernel/cpu/zhaoxin.c b/arch/x86/kernel/cpu/zhaoxin.c
@@ -66,16 +66,21 @@ static void early_init_zhaoxin(struct cpuinfo_x86 *c)
 		set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC);
 	}
 
+	if (detect_extended_topology_early(c) < 0)
+		detect_ht_early(c);
 }
 
 static void init_zhaoxin(struct cpuinfo_x86 *c)
 {
 	early_init_zhaoxin(c);
+	detect_extended_topology(c);
 	init_intel_cacheinfo(c);
-	detect_num_cpu_cores(c);
+	if (!cpu_has(c, X86_FEATURE_XTOPOLOGY)) {
+		detect_num_cpu_cores(c);
 #ifdef CONFIG_X86_32
 	detect_ht(c);
 #endif
+	}
 
 	if (c->cpuid_level > 9) {
 		unsigned int eax = cpuid_eax(10);