#define MSR_IA32_PERF_STATUS 0x198
#define MSR_IA32_MISC_ENABLES 0x1a0
#define MSR_IA32_ENERGY_PERF_BIAS 0x1b0
+#define MSR_NEHALEM_TURBO_RATIO_LIMIT 0x1ad
/*
* read_msr
ret = read_msr(cpu, MSR_IA32_MISC_ENABLES, &misc_enables);
if (ret)
return ret;
+
return (misc_enables >> 38) & 0x1;
}
return ret;
return 0;
}
+
+unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu)
+{
+ unsigned long long val;
+ int ret;
+
+ if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_HAS_TURBO_RATIO))
+ return -1;
+
+ ret = read_msr(cpu, MSR_NEHALEM_TURBO_RATIO_LIMIT, &val);
+ if (ret)
+ return ret;
+ return val;
+}
#endif