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tools/power/x86/intel-speed-select: Get punit core mapping information

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Get punit core mapping information using format of MSR 0x54. Based
on the API version, decode is done using new format. The new format
also include a power domain ID. TPMI SST information is for each
power domain.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
This commit is contained in:
Srinivas Pandruvada 2023-03-06 09:26:28 -08:00
parent 887e5be91d
commit a0ca5a0973
1 changed files with 41 additions and 16 deletions
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57
tools/power/x86/intel-speed-select/isst-config.c
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@ -669,6 +669,46 @@ int get_cpu_count(struct isst_id *id)
return cpu_cnt[id->pkg][id->die][id->punit];
}
static void update_punit_cpu_info(__u32 physical_cpu, struct _cpu_map *cpu_map)
{
if (api_version() > 1) {
/*
* MSR 0x54 format
* [15:11] PM_DOMAIN_ID
* [10:3] MODULE_ID (aka IDI_AGENT_ID)
* [2:0] LP_ID (We don't care about these bits we only
* care die and core id
* For Atom:
* [2] Always 0
* [1:0] core ID within module
* For Core
* [2:1] Always 0
* [0] thread ID
*/
cpu_map->punit_id = (physical_cpu >> 11) & 0x1f;
cpu_map->punit_cpu_core = (physical_cpu >> 3) & 0xff;
cpu_map->punit_cpu = physical_cpu & 0x7ff;
} else {
int punit_id;
/*
* MSR 0x53 format
* Format
* Bit 0 – thread ID
* Bit 8:1 – core ID
* Bit 13:9 – punit ID
*/
cpu_map->punit_cpu = physical_cpu & 0x1ff;
cpu_map->punit_cpu_core = (cpu_map->punit_cpu >> 1); // shift to get core id
punit_id = (physical_cpu >> 9) & 0x1f;
if (punit_id >= MAX_PUNIT_PER_DIE)
punit_id = 0;
cpu_map->punit_id = punit_id;
}
}
static void create_cpu_map(void)
{
const char *pathname = "/dev/isst_interface";
@ -727,24 +767,9 @@ static void create_cpu_map(void)
fprintf(outf, "Error: map logical_cpu:%d\n",
map.cpu_map[0].logical_cpu);
} else {
/*
* Format
* Bit 0 – thread ID
* Bit 8:1 – core ID
* Bit 13:9 – punit ID
*/
cpu_map[i].punit_cpu = map.cpu_map[0].physical_cpu & 0x1ff;
cpu_map[i].punit_cpu_core = (cpu_map[i].punit_cpu >>
1); // shift to get core id
punit_id = (map.cpu_map[0].physical_cpu >> 9) & 0x1f;
if (punit_id >= MAX_PUNIT_PER_DIE)
punit_id = 0;
cpu_map[i].punit_id = punit_id;
update_punit_cpu_info(map.cpu_map[0].physical_cpu, &cpu_map[i]);
}
}
cpu_map[i].initialized = 1;
cpu_cnt[pkg_id][die_id][punit_id]++;