utils/helpers/cpuid.c

46 int get_cpu_info(struct cpupower_cpu_info *cpu_info)
56 	cpu_info->vendor		= X86_VENDOR_UNKNOWN;
57 	cpu_info->family		= unknown;
58 	cpu_info->model			= unknown;
59 	cpu_info->stepping		= unknown;
60 	cpu_info->caps			= 0;
81 					cpu_info->vendor = x;
86 			       &cpu_info->family);
89 			       &cpu_info->model);
92 			       &cpu_info->stepping);
95 			if (cpu_info->vendor == X86_VENDOR_UNKNOWN ||
96 			    cpu_info->family == unknown ||
97 			    cpu_info->model == unknown ||
98 			    cpu_info->stepping == unknown) {
111 	if (cpu_info->vendor != X86_VENDOR_AMD &&
112 	    cpu_info->vendor != X86_VENDOR_HYGON &&
113 	    cpu_info->vendor != X86_VENDOR_INTEL)
122 		cpu_info->caps |= CPUPOWER_CAP_INV_TSC;
126 		cpu_info->caps |= CPUPOWER_CAP_APERF;
129 	if (cpu_info->vendor == X86_VENDOR_AMD ||
130 	    cpu_info->vendor == X86_VENDOR_HYGON) {
133 				cpu_info->caps |= CPUPOWER_CAP_AMD_CPB;
135 				if (cpu_info->family >= 0x17)
136 					cpu_info->caps |= CPUPOWER_CAP_AMD_CPB_MSR;
140 			    cpu_info->family != 0x14) {
142 				cpu_info->caps |= CPUPOWER_CAP_AMD_HW_PSTATE;
144 				if (cpu_info->family >= 0x17)
145 					cpu_info->caps |= CPUPOWER_CAP_AMD_PSTATEDEF;
151 			cpu_info->caps |= CPUPOWER_CAP_AMD_RDPRU;
154 			cpu_info->caps |= CPUPOWER_CAP_AMD_PSTATE;
160 			cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB;
161 			cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB_MSR;
162 			cpu_info->caps &= ~CPUPOWER_CAP_AMD_HW_PSTATE;
163 			cpu_info->caps &= ~CPUPOWER_CAP_AMD_PSTATEDEF;
167 	if (cpu_info->vendor == X86_VENDOR_INTEL) {
170 			cpu_info->caps |= CPUPOWER_CAP_INTEL_IDA;
173 	if (cpu_info->vendor == X86_VENDOR_INTEL) {
176 			cpu_info->caps |= CPUPOWER_CAP_PERF_BIAS;
179 		if (cpu_info->family == 6) {
180 			switch (cpu_info->model) {
192 				cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
198 				cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
199 				cpu_info->caps |= CPUPOWER_CAP_IS_SNB;
210 		cpuid_level, ext_cpuid_level, cpu_info->caps);