mirror/libcpuid
1
0
Fork 0
mirror of https://github.com/anrieff/libcpuid synced 2024-12-16 16:35:45 +00:00
Code Issues Releases Wiki Activity

Merge pull request #92 from X0rg/master

Browse source 
AMD Ryzen support (RDMSR)
This commit is contained in:
Veselin Georgiev 2017-04-26 15:50:02 +01:00 committed by GitHub
commit b0cc93a253
1 changed files with 19 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
libcpuid/rdmsr.c
View file

@ -528,11 +528,14 @@ int msr_serialize_raw_data(struct msr_driver_t* handle, const char* filename)
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
AMD Processor Programming Reference (PPR)
* AMD Family 17h Processors
https://support.amd.com/TechDocs/54945_PPR_Family_17h_Models_00h-0Fh.pdf
- Intel MSRs:
Intel® 64 and IA-32 Architectures Software Developer’s Manual
* Volume 3 (3A, 3B, 3C & 3D): System Programming Guide
@ -691,6 +694,15 @@ static int get_amd_multipliers(struct msr_info_t *info, uint32_t pstate, uint64_
err += cpu_rdmsr_range(info->handle, pstate, 5, 0, &CpuFid);
*multiplier = (uint64_t) ((CpuFid + magic_constant) / (1ull << CpuDid)) / divisor;
break;
case 0x17:
/* PPR 17h, pages 30 and 138-139
MSRC001_00[6B:64][13:8] is CpuDfsId
MSRC001_00[6B:64][7:0] is CpuFid
CoreCOF is (Core::X86::Msr::PStateDef[CpuFid[7:0]] / Core::X86::Msr::PStateDef[CpuDfsId]) * 200 */
err = cpu_rdmsr_range(info->handle, pstate, 13, 8, &CpuDid);
err += cpu_rdmsr_range(info->handle, pstate, 7, 0, &CpuFid);
*multiplier = (uint64_t) (CpuFid / CpuDid) * 2;
break;
default:
err = 1;
break;
@ -860,11 +872,15 @@ static double get_info_voltage(struct msr_info_t *info)
}
else if(info->id->vendor == VENDOR_AMD) {
/* Refer links above
MSRC001_00[6B:64][15:9] is CpuVid
MSRC001_00[6B:64][15:9] is CpuVid (Jaguar and before)
MSRC001_00[6B:64][21:14] is CpuVid (Zen)
MSRC001_0063[2:0] is P-state Status
2.4.1.6.3 Serial VID (SVI) Encodings: voltage = 1.550V - 0.0125V * SviVid[6:0] */
err = cpu_rdmsr_range(info->handle, MSR_PSTATE_S, 2, 0, &reg);
err += cpu_rdmsr_range(info->handle, MSR_PSTATE_0 + (uint32_t) reg, 15, 9, &CpuVid);
if(info->id->ext_family < 0x17)
err += cpu_rdmsr_range(info->handle, MSR_PSTATE_0 + (uint32_t) reg, 15, 9, &CpuVid);
else
err += cpu_rdmsr_range(info->handle, MSR_PSTATE_0 + (uint32_t) reg, 21, 14, &CpuVid);
if (!err && MSR_PSTATE_0 + (uint32_t) reg <= MSR_PSTATE_7) return 1.550 - 0.0125 * CpuVid;
}