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Merge pull request #56 from X0rg/master

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Fix for AMD multipliers
This commit is contained in:
Veselin Georgiev 2016-08-30 11:07:41 +01:00 committed by GitHub
commit 8f21ed54ab
1 changed files with 102 additions and 21 deletions
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119
libcpuid/rdmsr.c
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@ -511,10 +511,21 @@ int cpu_msrinfo(struct msr_driver_t* driver, cpu_msrinfo_request_t which)
AMD BIOS and Kernel Developer’s Guide (BKDG)
* AMD Family 10h Processors
http://support.amd.com/TechDocs/31116.pdf
* AMD Family 15h Models 00h-0Fh Processors
* AMD Family 11h Processors
http://support.amd.com/TechDocs/41256.pdf
* AMD Family 12h Processors
http://support.amd.com/TechDocs/41131.pdf
* AMD Family 14h Processors
http://support.amd.com/TechDocs/43170_14h_Mod_00h-0Fh_BKDG.pdf
* AMD Family 15h Processors
http://support.amd.com/TechDocs/42301_15h_Mod_00h-0Fh_BKDG.pdf
* AMD Family 15h Models 30h-3Fh
http://support.amd.com/TechDocs/42300_15h_Mod_10h-1Fh_BKDG.pdf
http://support.amd.com/TechDocs/49125_15h_Models_30h-3Fh_BKDG.pdf
http://support.amd.com/TechDocs/50742_15h_Models_60h-6Fh_BKDG.pdf
http://support.amd.com/TechDocs/49125_15h_Models_30h-3Fh_BKDG.pdf
* AMD Family 16h Processors
http://support.amd.com/TechDocs/48751_16h_bkdg.pdf
http://support.amd.com/TechDocs/52740_16h_Models_30h-3Fh_BKDG.pdf
- Intel MSRs:
Intel® 64 and IA-32 Architectures Software Developer’s Manual
@ -561,27 +572,97 @@ static int perfmsr_measure(struct msr_driver_t* handle, int msr)
return (int) ((y - x) / (b - a));
}
static int get_amd_multipliers(struct msr_driver_t* handle, struct internal_id_info_t *internal,
static int get_amd_multipliers(struct msr_driver_t* handle, struct cpu_id_t *id,
struct internal_id_info_t *internal,
uint32_t pstate, uint64_t *multiplier)
{
int err;
uint64_t CpuFid, CpuDid;
double factor = 2.0;
static int clock = 0;
uint64_t CpuFid, CpuDid, CpuDidLSD;
double divisor;
if (pstate < MSR_PSTATE_0 || MSR_PSTATE_7 < pstate)
return 1;
/* Refer links above
Table 299: P-state Definitions
switch (id->ext_family) {
case 0x11:
/* BKDG 11h, page 236
MSRC001_00[6B:64][8:6] is CpuDid
MSRC001_00[6B:64][5:0] is CpuFid
APUs -> 100MHz REFCLK
CPUs -> 200MHz REFCLK */
if (FUSION_C <= internal->code.amd && internal->code.amd <= FUSION_A)
factor = 1.0;
err = cpu_rdmsr_range(handle, pstate, 5, 0, &CpuFid);
err += cpu_rdmsr_range(handle, pstate, 8, 6, &CpuDid);
*multiplier = (uint64_t) (((CpuFid + 0x10) / (1ull << CpuDid)) / factor);
CPU COF is ((100 MHz * (CpuFid + 08h)) / (2^CpuDid)) */
err = cpu_rdmsr_range(handle, pstate, 8, 6, &CpuDid);
err += cpu_rdmsr_range(handle, pstate, 5, 0, &CpuFid);
*multiplier = (uint64_t) ((CpuFid + 0x8) / (1ull << CpuDid));
break;
case 0x12:
/* BKDG 12h, page 469
MSRC001_00[6B:64][8:4] is CpuFid
MSRC001_00[6B:64][3:0] is CpuDid
CPU COF is (100MHz * (CpuFid + 10h) / (divisor specified by CpuDid)) */
err = cpu_rdmsr_range(handle, pstate, 8, 4, &CpuFid);
err += cpu_rdmsr_range(handle, pstate, 3, 0, &CpuDid);
if (CpuDid == 0b0000)
divisor = 1;
else if (CpuDid == 0b0001)
divisor = 1.5;
else if (CpuDid == 0b0010)
divisor = 2;
else if (CpuDid == 0b0011)
divisor = 3;
else if (CpuDid == 0b0100)
divisor = 4;
else if (CpuDid == 0b0101)
divisor = 6;
else if (CpuDid == 0b0110)
divisor = 8;
else if (CpuDid == 0b0111)
divisor = 12;
else if (CpuDid == 0b1000)
divisor = 16;
else
divisor = 0;
if (divisor > 0)
*multiplier = (uint64_t) ((CpuFid + 0x10) / divisor);
else
err++;
break;
case 0x14:
/* BKDG 14h, page 430
MSRC001_00[6B:64][8:4] is CpuDidMSD
MSRC001_00[6B:64][3:0] is CpuDidLSD
PLL COF is (100 MHz * (D18F3xD4[MainPllOpFreqId] + 10h))
Divisor is (CpuDidMSD + (CpuDidLSD * 0.25) + 1)
CPU COF is (main PLL frequency specified by D18F3xD4[MainPllOpFreqId]) / (core clock divisor specified by CpuDidMSD and CpuDidLSD) */
err = cpu_rdmsr_range(handle, pstate, 8, 4, &CpuDid);
err += cpu_rdmsr_range(handle, pstate, 3, 0, &CpuDidLSD);
if (clock == 0)
clock = cpu_clock_measure(100, 1) + 5; // Fake round
*multiplier = (uint64_t) ((clock / 100 + 0x10) / (CpuDid + CpuDidLSD * 0.25 + 1));
break;
case 0x10:
/* BKDG 10h, page 429
MSRC001_00[6B:64][8:6] is CpuDid
MSRC001_00[6B:64][5:0] is CpuFid
CPU COF is (100 MHz * (CpuFid + 10h) / (2^CpuDid)) */
case 0x15:
/* BKDG 15h, page 570/580/635/692 (00h-0Fh/10h-1Fh/30h-3Fh/60h-6Fh)
MSRC001_00[6B:64][8:6] is CpuDid
MSRC001_00[6B:64][5:0] is CpuFid
CoreCOF is (100 * (MSRC001_00[6B:64][CpuFid] + 10h) / (2^MSRC001_00[6B:64][CpuDid])) */
case 0x16:
/* BKDG 16h, page 549/611 (00h-0Fh/30h-3Fh)
MSRC001_00[6B:64][8:6] is CpuDid
MSRC001_00[6B:64][5:0] is CpuFid
CoreCOF is (100 * (MSRC001_00[6B:64][CpuFid] + 10h) / (2^MSRC001_00[6B:64][CpuDid])) */
err = cpu_rdmsr_range(handle, pstate, 8, 6, &CpuDid);
err += cpu_rdmsr_range(handle, pstate, 5, 0, &CpuFid);
*multiplier = (uint64_t) ((CpuFid + 0x10) / (1ull << CpuDid));
break;
default:
err = 1;
break;
}
return err;
}
@ -612,7 +693,7 @@ static double get_info_min_multiplier(struct msr_driver_t* handle, struct cpu_id
MSRC001_0061[6:4] is PstateMaxVal
PstateMaxVal is the lowest-performance non-boosted P-state */
err = cpu_rdmsr_range(handle, MSR_PSTATE_L, 6, 4, &reg);
err += get_amd_multipliers(handle, internal, MSR_PSTATE_0 + (uint32_t) reg, &reg);
err += get_amd_multipliers(handle, id, internal, MSR_PSTATE_0 + (uint32_t) reg, &reg);
if (!err) return (double) reg;
}
@ -641,7 +722,7 @@ static double get_info_cur_multiplier(struct msr_driver_t* handle, struct cpu_id
/* Refer links above
MSRC001_0063[2:0] is CurPstate */
err = cpu_rdmsr_range(handle, MSR_PSTATE_S, 2, 0, &reg);
err += get_amd_multipliers(handle, internal, MSR_PSTATE_0 + (uint32_t) reg, &reg);
err += get_amd_multipliers(handle, id, internal, MSR_PSTATE_0 + (uint32_t) reg, &reg);
if (!err) return (double) reg;
}
@ -681,7 +762,7 @@ static double get_info_max_multiplier(struct msr_driver_t* handle, struct cpu_id
/* Refer links above
MSRC001_0064 is Pb0
Pb0 is the highest-performance boosted P-state */
err = get_amd_multipliers(handle, internal, MSR_PSTATE_0, &reg);
err = get_amd_multipliers(handle, id, internal, MSR_PSTATE_0, &reg);
if (!err) return (double) reg;
}
@ -751,7 +832,7 @@ static double get_info_bus_clock(struct msr_driver_t* handle, struct cpu_id_t *i
uint64_t reg;
if(clock == 0)
clock = cpu_clock_measure(50, 1);
clock = cpu_clock_measure(100, 1);
if(id->vendor == VENDOR_INTEL) {
/* Refer links above
@ -771,7 +852,7 @@ static double get_info_bus_clock(struct msr_driver_t* handle, struct cpu_id_t *i
MSRC001_0061[2:0] is CurPstateLimit
CurPstateLimit is the highest-performance non-boosted P-state */
err = cpu_rdmsr_range(handle, MSR_PSTATE_L, 2, 0, &reg);
err += get_amd_multipliers(handle, internal, MSR_PSTATE_0 + (uint32_t) reg, &reg);
err += get_amd_multipliers(handle, id, internal, MSR_PSTATE_0 + (uint32_t) reg, &reg);
if (!err) return (double) clock / reg;
}