powercap: intel_rapl: add support for Sapphire Rapids
RAPL on SPR behaves similar to Haswell server, except that SPR uses
a fixed energy unit (1 Joule) for the PSYS RAPL domain.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
index 61a63a1..b739ce4 100644
--- a/drivers/powercap/intel_rapl_common.c
+++ b/drivers/powercap/intel_rapl_common.c
@@ -93,6 +93,7 @@ struct rapl_defaults {
u64 (*compute_time_window)(struct rapl_package *rp, u64 val,
bool to_raw);
unsigned int dram_domain_energy_unit;
+ unsigned int psys_domain_energy_unit;
};
static struct rapl_defaults *rapl_defaults;
@@ -533,12 +534,23 @@ static void rapl_init_domains(struct rapl_package *rp)
for (j = 0; j < RAPL_DOMAIN_REG_MAX; j++)
rd->regs[j] = rp->priv->regs[i][j];
- if (i == RAPL_DOMAIN_DRAM) {
+ switch (i) {
+ case RAPL_DOMAIN_DRAM:
rd->domain_energy_unit =
rapl_defaults->dram_domain_energy_unit;
if (rd->domain_energy_unit)
pr_info("DRAM domain energy unit %dpj\n",
rd->domain_energy_unit);
+ break;
+ case RAPL_DOMAIN_PLATFORM:
+ rd->domain_energy_unit =
+ rapl_defaults->psys_domain_energy_unit;
+ if (rd->domain_energy_unit)
+ pr_info("Platform domain energy unit %dpj\n",
+ rd->domain_energy_unit);
+ break;
+ default:
+ break;
}
rd++;
}
@@ -919,6 +931,14 @@ static const struct rapl_defaults rapl_defaults_hsw_server = {
.dram_domain_energy_unit = 15300,
};
+static const struct rapl_defaults rapl_defaults_spr_server = {
+ .check_unit = rapl_check_unit_core,
+ .set_floor_freq = set_floor_freq_default,
+ .compute_time_window = rapl_compute_time_window_core,
+ .dram_domain_energy_unit = 15300,
+ .psys_domain_energy_unit = 1000000000,
+};
+
static const struct rapl_defaults rapl_defaults_byt = {
.floor_freq_reg_addr = IOSF_CPU_POWER_BUDGET_CTL_BYT,
.check_unit = rapl_check_unit_atom,
@@ -978,6 +998,7 @@ static const struct x86_cpu_id rapl_ids[] __initconst = {
X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE_L, &rapl_defaults_core),
X86_MATCH_INTEL_FAM6_MODEL(COMETLAKE, &rapl_defaults_core),
X86_MATCH_INTEL_FAM6_MODEL(TIGERLAKE_L, &rapl_defaults_core),
+ X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X, &rapl_defaults_spr_server),
X86_MATCH_INTEL_FAM6_MODEL(ATOM_SILVERMONT, &rapl_defaults_byt),
X86_MATCH_INTEL_FAM6_MODEL(ATOM_AIRMONT, &rapl_defaults_cht),