174 static void init_amd_k5(struct cpuinfo_x86 *c)  in init_amd_k5()  argument
186 	if (c->x86_model == 9 || c->x86_model == 10) {  in init_amd_k5()
193 static void init_amd_k6(struct cpuinfo_x86 *c)  in init_amd_k6()  argument
199 	if (c->x86_model < 6) {  in init_amd_k6()
201 		if (c->x86_model == 0) {  in init_amd_k6()
202 			clear_cpu_cap(c, X86_FEATURE_APIC);  in init_amd_k6()
203 			set_cpu_cap(c, X86_FEATURE_PGE);  in init_amd_k6()
208 	if (c->x86_model == 6 && c->x86_stepping == 1) {  in init_amd_k6()
237 	if (c->x86_model < 8 ||  in init_amd_k6()
238 	   (c->x86_model == 8 && c->x86_stepping < 8)) {  in init_amd_k6()
257 	if ((c->x86_model == 8 && c->x86_stepping > 7) ||  in init_amd_k6()
258 	     c->x86_model == 9 || c->x86_model == 13) {  in init_amd_k6()
279 	if (c->x86_model == 10) {  in init_amd_k6()
287 static void init_amd_k7(struct cpuinfo_x86 *c)  in init_amd_k7()  argument
297 	if (c->x86_model >= 6 && c->x86_model <= 10) {  in init_amd_k7()
298 		if (!cpu_has(c, X86_FEATURE_XMM)) {  in init_amd_k7()
301 			set_cpu_cap(c, X86_FEATURE_XMM);  in init_amd_k7()
310 	if ((c->x86_model == 8 && c->x86_stepping >= 1) || (c->x86_model > 8)) {  in init_amd_k7()
320 	if (!c->cpu_index)  in init_amd_k7()
328 	if ((c->x86_model == 6) && ((c->x86_stepping == 0) ||  in init_amd_k7()
329 	    (c->x86_stepping == 1)))  in init_amd_k7()
333 	if ((c->x86_model == 7) && (c->x86_stepping == 0))  in init_amd_k7()
343 	if (((c->x86_model == 6) && (c->x86_stepping >= 2)) ||  in init_amd_k7()
344 	    ((c->x86_model == 7) && (c->x86_stepping >= 1)) ||  in init_amd_k7()
345 	     (c->x86_model > 7))  in init_amd_k7()
346 		if (cpu_has(c, X86_FEATURE_MP))  in init_amd_k7()
389 static void legacy_fixup_core_id(struct cpuinfo_x86 *c)  in legacy_fixup_core_id()  argument
393 	if (c->x86 >= 0x17)  in legacy_fixup_core_id()
396 	cus_per_node = c->x86_max_cores / nodes_per_socket;  in legacy_fixup_core_id()
397 	c->cpu_core_id %= cus_per_node;  in legacy_fixup_core_id()
406 static void amd_get_topology(struct cpuinfo_x86 *c)  in amd_get_topology()  argument
417 		c->cpu_die_id  = ecx & 0xff;  in amd_get_topology()
419 		if (c->x86 == 0x15)  in amd_get_topology()
420 			c->cu_id = ebx & 0xff;  in amd_get_topology()
422 		if (c->x86 >= 0x17) {  in amd_get_topology()
423 			c->cpu_core_id = ebx & 0xff;  in amd_get_topology()
426 				c->x86_max_cores /= smp_num_siblings;  in amd_get_topology()
433 		err = detect_extended_topology(c);  in amd_get_topology()
435 			c->x86_coreid_bits = get_count_order(c->x86_max_cores);  in amd_get_topology()
437 		cacheinfo_amd_init_llc_id(c, cpu);  in amd_get_topology()
439 	} else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) {  in amd_get_topology()
443 		c->cpu_die_id = value & 7;  in amd_get_topology()
445 		per_cpu(cpu_llc_id, cpu) = c->cpu_die_id;  in amd_get_topology()
450 		set_cpu_cap(c, X86_FEATURE_AMD_DCM);  in amd_get_topology()
451 		legacy_fixup_core_id(c);  in amd_get_topology()
459 static void amd_detect_cmp(struct cpuinfo_x86 *c)  in amd_detect_cmp()  argument
464 	bits = c->x86_coreid_bits;  in amd_detect_cmp()
466 	c->cpu_core_id = c->initial_apicid & ((1 << bits)-1);  in amd_detect_cmp()
468 	c->phys_proc_id = c->initial_apicid >> bits;  in amd_detect_cmp()
470 	per_cpu(cpu_llc_id, cpu) = c->cpu_die_id = c->phys_proc_id;  in amd_detect_cmp()
479 static void srat_detect_node(struct cpuinfo_x86 *c)  in srat_detect_node()  argument
484 	unsigned apicid = c->apicid;  in srat_detect_node()
496 		x86_cpuinit.fixup_cpu_id(c, node);  in srat_detect_node()
518 		int ht_nodeid = c->initial_apicid;  in srat_detect_node()
530 static void early_init_amd_mc(struct cpuinfo_x86 *c)  in early_init_amd_mc()  argument
536 	if (c->extended_cpuid_level < 0x80000008)  in early_init_amd_mc()
541 	c->x86_max_cores = (ecx & 0xff) + 1;  in early_init_amd_mc()
548 		while ((1 << bits) < c->x86_max_cores)  in early_init_amd_mc()
552 	c->x86_coreid_bits = bits;  in early_init_amd_mc()
556 static void bsp_init_amd(struct cpuinfo_x86 *c)  in bsp_init_amd()  argument
558 	if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) {  in bsp_init_amd()
560 		if (c->x86 > 0x10 ||  in bsp_init_amd()
561 		    (c->x86 == 0x10 && c->x86_model >= 0x2)) {  in bsp_init_amd()
570 	if (c->x86 == 0x15) {  in bsp_init_amd()
585 	if (cpu_has(c, X86_FEATURE_MWAITX))  in bsp_init_amd()
602 	    c->x86 >= 0x15 && c->x86 <= 0x17) {  in bsp_init_amd()
605 		switch (c->x86) {  in bsp_init_amd()
622 	resctrl_cpu_detect(c);  in bsp_init_amd()
625 static void early_detect_mem_encrypt(struct cpuinfo_x86 *c)  in early_detect_mem_encrypt()  argument
643 	if (cpu_has(c, X86_FEATURE_SME) || cpu_has(c, X86_FEATURE_SEV)) {  in early_detect_mem_encrypt()
654 		c->x86_phys_bits -= (cpuid_ebx(0x8000001f) >> 6) & 0x3f;  in early_detect_mem_encrypt()
676 static void early_init_amd(struct cpuinfo_x86 *c)  in early_init_amd()  argument
681 	early_init_amd_mc(c);  in early_init_amd()
683 	if (c->x86 >= 0xf)  in early_init_amd()
684 		set_cpu_cap(c, X86_FEATURE_K8);  in early_init_amd()
686 	rdmsr_safe(MSR_AMD64_PATCH_LEVEL, &c->microcode, &dummy);  in early_init_amd()
692 	if (c->x86_power & (1 << 8)) {  in early_init_amd()
693 		set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);  in early_init_amd()
694 		set_cpu_cap(c, X86_FEATURE_NONSTOP_TSC);  in early_init_amd()
698 	if (c->x86_power & BIT(12))  in early_init_amd()
699 		set_cpu_cap(c, X86_FEATURE_ACC_POWER);  in early_init_amd()
702 	if (c->x86_power & BIT(14))  in early_init_amd()
703 		set_cpu_cap(c, X86_FEATURE_RAPL);  in early_init_amd()
706 	set_cpu_cap(c, X86_FEATURE_SYSCALL32);  in early_init_amd()
709 	if (c->x86 == 5)  in early_init_amd()
710 		if (c->x86_model == 13 || c->x86_model == 9 ||  in early_init_amd()
711 		    (c->x86_model == 8 && c->x86_stepping >= 8))  in early_init_amd()
712 			set_cpu_cap(c, X86_FEATURE_K6_MTRR);  in early_init_amd()
722 		if (c->x86 > 0x16)  in early_init_amd()
723 			set_cpu_cap(c, X86_FEATURE_EXTD_APICID);  in early_init_amd()
724 		else if (c->x86 >= 0xf) {  in early_init_amd()
730 				set_cpu_cap(c, X86_FEATURE_EXTD_APICID);  in early_init_amd()
740 	set_cpu_cap(c, X86_FEATURE_VMMCALL);  in early_init_amd()
743 	if (c->x86 == 0x16 && c->x86_model <= 0xf)  in early_init_amd()
752 	if (cpu_has_amd_erratum(c, amd_erratum_400))  in early_init_amd()
753 		set_cpu_bug(c, X86_BUG_AMD_E400);  in early_init_amd()
755 	early_detect_mem_encrypt(c);  in early_init_amd()
758 	if (c->x86 == 0x15 &&  in early_init_amd()
759 	    (c->x86_model >= 0x10 && c->x86_model <= 0x6f) &&  in early_init_amd()
760 	    !cpu_has(c, X86_FEATURE_TOPOEXT)) {  in early_init_amd()
765 				set_cpu_cap(c, X86_FEATURE_TOPOEXT);  in early_init_amd()
771 	if (cpu_has(c, X86_FEATURE_TOPOEXT))  in early_init_amd()
774 	if (!cpu_has(c, X86_FEATURE_HYPERVISOR) && !cpu_has(c, X86_FEATURE_IBPB_BRTYPE)) {  in early_init_amd()
775 		if (c->x86 == 0x17 && boot_cpu_has(X86_FEATURE_AMD_IBPB))  in early_init_amd()
777 		else if (c->x86 >= 0x19 && !wrmsrl_safe(MSR_IA32_PRED_CMD, PRED_CMD_SBPB)) {  in early_init_amd()
784 static void init_amd_k8(struct cpuinfo_x86 *c)  in init_amd_k8()  argument
792 		set_cpu_cap(c, X86_FEATURE_REP_GOOD);  in init_amd_k8()
799 	if (c->x86_model < 0x14 && cpu_has(c, X86_FEATURE_LAHF_LM)) {  in init_amd_k8()
800 		clear_cpu_cap(c, X86_FEATURE_LAHF_LM);  in init_amd_k8()
807 	if (!c->x86_model_id[0])  in init_amd_k8()
808 		strcpy(c->x86_model_id, "Hammer");  in init_amd_k8()
820 	set_cpu_bug(c, X86_BUG_SWAPGS_FENCE);  in init_amd_k8()
823 static void init_amd_gh(struct cpuinfo_x86 *c)  in init_amd_gh()  argument
827 	if (c == &boot_cpu_data)  in init_amd_gh()
854 	if (cpu_has_amd_erratum(c, amd_erratum_383))  in init_amd_gh()
855 		set_cpu_bug(c, X86_BUG_AMD_TLB_MMATCH);  in init_amd_gh()
858 static void init_amd_ln(struct cpuinfo_x86 *c)  in init_amd_ln()  argument
883 static void clear_rdrand_cpuid_bit(struct cpuinfo_x86 *c)  in clear_rdrand_cpuid_bit()  argument
911 	clear_cpu_cap(c, X86_FEATURE_RDRAND);  in clear_rdrand_cpuid_bit()
915 static void init_amd_jg(struct cpuinfo_x86 *c)  in init_amd_jg()  argument
922 	clear_rdrand_cpuid_bit(c);  in init_amd_jg()
925 static void init_amd_bd(struct cpuinfo_x86 *c)  in init_amd_bd()  argument
933 	if ((c->x86_model >= 0x02) && (c->x86_model < 0x20)) {  in init_amd_bd()
945 	clear_rdrand_cpuid_bit(c);  in init_amd_bd()
948 void init_spectral_chicken(struct cpuinfo_x86 *c)  in init_spectral_chicken()  argument
961 	if (!cpu_has(c, X86_FEATURE_HYPERVISOR) && cpu_has(c, X86_FEATURE_AMD_STIBP)) {  in init_spectral_chicken()
976 	clear_cpu_cap(c, X86_FEATURE_XSAVES);  in init_spectral_chicken()
979 static void init_amd_zn(struct cpuinfo_x86 *c)  in init_amd_zn()  argument
981 	set_cpu_cap(c, X86_FEATURE_ZEN);  in init_amd_zn()
988 	if (!cpu_has(c, X86_FEATURE_HYPERVISOR)) {  in init_amd_zn()
991 		if (!cpu_has(c, X86_FEATURE_CPB))  in init_amd_zn()
992 			set_cpu_cap(c, X86_FEATURE_CPB);  in init_amd_zn()
999 		if (c->x86 == 0x19 && !cpu_has(c, X86_FEATURE_BTC_NO))  in init_amd_zn()
1000 			set_cpu_cap(c, X86_FEATURE_BTC_NO);  in init_amd_zn()
1026 static void zenbleed_check(struct cpuinfo_x86 *c)  in zenbleed_check()  argument
1028 	if (!cpu_has_amd_erratum(c, amd_zenbleed))  in zenbleed_check()
1031 	if (cpu_has(c, X86_FEATURE_HYPERVISOR))  in zenbleed_check()
1034 	if (!cpu_has(c, X86_FEATURE_AVX))  in zenbleed_check()
1045 static void init_amd(struct cpuinfo_x86 *c)  in init_amd()  argument
1047 	early_init_amd(c);  in init_amd()
1053 	clear_cpu_cap(c, 0*32+31);  in init_amd()
1055 	if (c->x86 >= 0x10)  in init_amd()
1056 		set_cpu_cap(c, X86_FEATURE_REP_GOOD);  in init_amd()
1059 	if (cpu_has(c, X86_FEATURE_FSRM))  in init_amd()
1060 		set_cpu_cap(c, X86_FEATURE_FSRS);  in init_amd()
1063 	c->apicid = read_apic_id();  in init_amd()
1066 	if (c->x86 < 6)  in init_amd()
1067 		clear_cpu_cap(c, X86_FEATURE_MCE);  in init_amd()
1069 	switch (c->x86) {  in init_amd()
1070 	case 4:    init_amd_k5(c); break;  in init_amd()
1071 	case 5:    init_amd_k6(c); break;  in init_amd()
1072 	case 6:	   init_amd_k7(c); break;  in init_amd()
1073 	case 0xf:  init_amd_k8(c); break;  in init_amd()
1074 	case 0x10: init_amd_gh(c); break;  in init_amd()
1075 	case 0x12: init_amd_ln(c); break;  in init_amd()
1076 	case 0x15: init_amd_bd(c); break;  in init_amd()
1077 	case 0x16: init_amd_jg(c); break;  in init_amd()
1078 	case 0x17: init_spectral_chicken(c);  in init_amd()
1080 	case 0x19: init_amd_zn(c); break;  in init_amd()
1087 	if ((c->x86 >= 6) && (!cpu_has(c, X86_FEATURE_XSAVEERPTR)))  in init_amd()
1088 		set_cpu_bug(c, X86_BUG_FXSAVE_LEAK);  in init_amd()
1090 	cpu_detect_cache_sizes(c);  in init_amd()
1092 	amd_detect_cmp(c);  in init_amd()
1093 	amd_get_topology(c);  in init_amd()
1094 	srat_detect_node(c);  in init_amd()
1096 	init_amd_cacheinfo(c);  in init_amd()
1098 	if (!cpu_has(c, X86_FEATURE_LFENCE_RDTSC) && cpu_has(c, X86_FEATURE_XMM2)) {  in init_amd()
1109 		set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);  in init_amd()
1116 	if (c->x86 > 0x11)  in init_amd()
1117 		set_cpu_cap(c, X86_FEATURE_ARAT);  in init_amd()
1120 	if (!cpu_has(c, X86_FEATURE_3DNOWPREFETCH))  in init_amd()
1121 		if (cpu_has(c, X86_FEATURE_3DNOW) || cpu_has(c, X86_FEATURE_LM))  in init_amd()
1122 			set_cpu_cap(c, X86_FEATURE_3DNOWPREFETCH);  in init_amd()
1126 		set_cpu_bug(c, X86_BUG_SYSRET_SS_ATTRS);  in init_amd()
1133 	if (cpu_has(c, X86_FEATURE_IRPERF) &&  in init_amd()
1134 	    !cpu_has_amd_erratum(c, amd_erratum_1054))  in init_amd()
1137 	check_null_seg_clears_base(c);  in init_amd()
1147 	    cpu_has(c, X86_FEATURE_AUTOIBRS))  in init_amd()
1150 	zenbleed_check(c);  in init_amd()
1152 	if (cpu_has_amd_erratum(c, amd_div0)) {  in init_amd()
1157 	if (!cpu_has(c, X86_FEATURE_HYPERVISOR) &&  in init_amd()
1158 	     cpu_has_amd_erratum(c, amd_erratum_1485))  in init_amd()
1163 static unsigned int amd_size_cache(struct cpuinfo_x86 *c, unsigned int size)  in amd_size_cache()  argument
1166 	if (c->x86 == 6) {  in amd_size_cache()
1168 		if (c->x86_model == 3 && c->x86_stepping == 0)  in amd_size_cache()
1171 		if (c->x86_model == 4 &&  in amd_size_cache()
1172 			(c->x86_stepping == 0 || c->x86_stepping == 1))  in amd_size_cache()
1179 static void cpu_detect_tlb_amd(struct cpuinfo_x86 *c)  in cpu_detect_tlb_amd()  argument
1184 	if (c->x86 < 0xf)  in cpu_detect_tlb_amd()
1187 	if (c->extended_cpuid_level < 0x80000006)  in cpu_detect_tlb_amd()
1199 	if (c->x86 == 0xf) {  in cpu_detect_tlb_amd()
1216 		if (c->x86 == 0x15 && c->x86_model <= 0x1f) {  in cpu_detect_tlb_amd()
1295 	struct cpuinfo_x86 *c = &boot_cpu_data;  in amd_get_highest_perf()  local
1297 	if (c->x86 == 0x17 && ((c->x86_model >= 0x30 && c->x86_model < 0x40) ||  in amd_get_highest_perf()
1298 			       (c->x86_model >= 0x70 && c->x86_model < 0x80)))  in amd_get_highest_perf()
1301 	if (c->x86 == 0x19 && ((c->x86_model >= 0x20 && c->x86_model < 0x30) ||  in amd_get_highest_perf()
1302 			       (c->x86_model >= 0x40 && c->x86_model < 0x70)))  in amd_get_highest_perf()
1311 	struct cpuinfo_x86 *c = &cpu_data(smp_processor_id());  in zenbleed_check_cpu()  local
1313 	zenbleed_check(c);  in zenbleed_check_cpu()