| ␉␉␉␉␉case CPU_MODEL_WESTMERE_EX:␊ |
| ␉␉␉␉␉{␊ |
| ␉␉␉␉␉␉maximum.Control = rdmsr64(MSR_IA32_PERF_STATUS) & 0xff; // Seems it always contains maximum multiplier value (with turbo, that's we need)...␊ |
| ␉␉␉␉␉␉minimum.Control = (rdmsr64(MSR_PLATFORM_INFO) >> 40) & 0xff;␊ |
| ␉␉␉␉␉␉␊ |
| ␉␉␉␉␉␉/*uint8_t i;␊ |
| ␉␉␉␉␉␉// Probe for lowest fid␊ |
| ␉␉␉␉␉␉for (i = maximum.Control; i >= 0x7; i--) ␊ |
| ␉␉␉␉␉␉{␊ |
| ␉␉␉␉␉␉␉wrmsr64(MSR_IA32_PERF_CONTROL, i);␊ |
| ␉␉␉␉␉␉␉delay(1);␊ |
| ␉␉␉␉␉␉␉minimum.Control = rdmsr64(MSR_IA32_PERF_STATUS);␊ |
| ␉␉␉␉␉␉␉delay(1);␊ |
| ␉␉␉␉␉␉}*/␊ |
| ␉␉␉␉␉␉␊ |
| ␉␉␉␉␉␉if (!minimum.Control)␊ |
| ␉␉␉␉␉␉{␊ |
| ␉␉␉␉␉␉␉// fix me: dirty method to get lowest multiplier... Hardcoded value!␊ |
| ␉␉␉␉␉␉␉if (strstr(Platform.CPU.BrandString, "Core(TM) i7"))␊ |
| ␉␉␉␉␉␉␉␉minimum.Control = 0x07;␊ |
| ␉␉␉␉␉␉␉else␊ |
| ␉␉␉␉␉␉␉␉minimum.Control = 0x09;␊ |
| ␉␉␉␉␉␉}␊ |
| ␉␉␉␉␉␉␊ |
| ␉␉␉␉␉␉verbose("P-States: min 0x%x, max 0x%x\n", minimum.Control, maximum.Control);␉␉␉␊ |
| ␉␉␉␉␉␉␊ |
| ␉␉␉␉␉␉// Sanity check␊ |
