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-rw-r--r--drivers/powercap/intel_rapl_common.c128
1 files changed, 69 insertions, 59 deletions
diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
index 267ec36b1649..3625d4466cb3 100644
--- a/drivers/powercap/intel_rapl_common.c
+++ b/drivers/powercap/intel_rapl_common.c
@@ -105,9 +105,9 @@ static const char pl4_name[] = "peak_power";
struct rapl_defaults {
u8 floor_freq_reg_addr;
- int (*check_unit)(struct rapl_package *rp, int cpu);
+ int (*check_unit)(struct rapl_domain *rd, int cpu);
void (*set_floor_freq)(struct rapl_domain *rd, bool mode);
- u64 (*compute_time_window)(struct rapl_package *rp, u64 val,
+ u64 (*compute_time_window)(struct rapl_domain *rd, u64 val,
bool to_raw);
unsigned int dram_domain_energy_unit;
unsigned int psys_domain_energy_unit;
@@ -557,7 +557,6 @@ static void rapl_init_domains(struct rapl_package *rp)
enum rapl_domain_type i;
enum rapl_domain_reg_id j;
struct rapl_domain *rd = rp->domains;
- struct rapl_defaults *defaults = get_defaults(rp);
for (i = 0; i < RAPL_DOMAIN_MAX; i++) {
unsigned int mask = rp->domain_map & (1 << i);
@@ -596,24 +595,6 @@ 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];
- switch (i) {
- case RAPL_DOMAIN_DRAM:
- rd->domain_energy_unit =
- 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 =
- 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++;
}
}
@@ -622,24 +603,19 @@ static u64 rapl_unit_xlate(struct rapl_domain *rd, enum unit_type type,
u64 value, int to_raw)
{
u64 units = 1;
- struct rapl_package *rp = rd->rp;
- struct rapl_defaults *defaults = get_defaults(rp);
+ struct rapl_defaults *defaults = get_defaults(rd->rp);
u64 scale = 1;
switch (type) {
case POWER_UNIT:
- units = rp->power_unit;
+ units = rd->power_unit;
break;
case ENERGY_UNIT:
scale = ENERGY_UNIT_SCALE;
- /* per domain unit takes precedence */
- if (rd->domain_energy_unit)
- units = rd->domain_energy_unit;
- else
- units = rp->energy_unit;
+ units = rd->energy_unit;
break;
case TIME_UNIT:
- return defaults->compute_time_window(rp, value, to_raw);
+ return defaults->compute_time_window(rd, value, to_raw);
case ARBITRARY_UNIT:
default:
return value;
@@ -857,58 +833,58 @@ static int rapl_write_data_raw(struct rapl_domain *rd,
* power unit : microWatts : Represented in milliWatts by default
* time unit : microseconds: Represented in seconds by default
*/
-static int rapl_check_unit_core(struct rapl_package *rp, int cpu)
+static int rapl_check_unit_core(struct rapl_domain *rd, int cpu)
{
struct reg_action ra;
u32 value;
- ra.reg = rp->priv->reg_unit;
+ ra.reg = rd->regs[RAPL_DOMAIN_REG_UNIT];
ra.mask = ~0;
- if (rp->priv->read_raw(cpu, &ra)) {
+ if (rd->rp->priv->read_raw(cpu, &ra)) {
pr_err("Failed to read power unit REG 0x%llx on CPU %d, exit.\n",
- rp->priv->reg_unit, cpu);
+ ra.reg, cpu);
return -ENODEV;
}
value = (ra.value & ENERGY_UNIT_MASK) >> ENERGY_UNIT_OFFSET;
- rp->energy_unit = ENERGY_UNIT_SCALE * 1000000 / (1 << value);
+ rd->energy_unit = ENERGY_UNIT_SCALE * 1000000 / (1 << value);
value = (ra.value & POWER_UNIT_MASK) >> POWER_UNIT_OFFSET;
- rp->power_unit = 1000000 / (1 << value);
+ rd->power_unit = 1000000 / (1 << value);
value = (ra.value & TIME_UNIT_MASK) >> TIME_UNIT_OFFSET;
- rp->time_unit = 1000000 / (1 << value);
+ rd->time_unit = 1000000 / (1 << value);
- pr_debug("Core CPU %s energy=%dpJ, time=%dus, power=%duW\n",
- rp->name, rp->energy_unit, rp->time_unit, rp->power_unit);
+ pr_debug("Core CPU %s:%s energy=%dpJ, time=%dus, power=%duW\n",
+ rd->rp->name, rd->name, rd->energy_unit, rd->time_unit, rd->power_unit);
return 0;
}
-static int rapl_check_unit_atom(struct rapl_package *rp, int cpu)
+static int rapl_check_unit_atom(struct rapl_domain *rd, int cpu)
{
struct reg_action ra;
u32 value;
- ra.reg = rp->priv->reg_unit;
+ ra.reg = rd->regs[RAPL_DOMAIN_REG_UNIT];
ra.mask = ~0;
- if (rp->priv->read_raw(cpu, &ra)) {
+ if (rd->rp->priv->read_raw(cpu, &ra)) {
pr_err("Failed to read power unit REG 0x%llx on CPU %d, exit.\n",
- rp->priv->reg_unit, cpu);
+ ra.reg, cpu);
return -ENODEV;
}
value = (ra.value & ENERGY_UNIT_MASK) >> ENERGY_UNIT_OFFSET;
- rp->energy_unit = ENERGY_UNIT_SCALE * 1 << value;
+ rd->energy_unit = ENERGY_UNIT_SCALE * 1 << value;
value = (ra.value & POWER_UNIT_MASK) >> POWER_UNIT_OFFSET;
- rp->power_unit = (1 << value) * 1000;
+ rd->power_unit = (1 << value) * 1000;
value = (ra.value & TIME_UNIT_MASK) >> TIME_UNIT_OFFSET;
- rp->time_unit = 1000000 / (1 << value);
+ rd->time_unit = 1000000 / (1 << value);
- pr_debug("Atom %s energy=%dpJ, time=%dus, power=%duW\n",
- rp->name, rp->energy_unit, rp->time_unit, rp->power_unit);
+ pr_debug("Atom %s:%s energy=%dpJ, time=%dus, power=%duW\n",
+ rd->rp->name, rd->name, rd->energy_unit, rd->time_unit, rd->power_unit);
return 0;
}
@@ -1011,7 +987,7 @@ static void set_floor_freq_atom(struct rapl_domain *rd, bool enable)
defaults->floor_freq_reg_addr, mdata);
}
-static u64 rapl_compute_time_window_core(struct rapl_package *rp, u64 value,
+static u64 rapl_compute_time_window_core(struct rapl_domain *rd, u64 value,
bool to_raw)
{
u64 f, y; /* fraction and exp. used for time unit */
@@ -1023,12 +999,12 @@ static u64 rapl_compute_time_window_core(struct rapl_package *rp, u64 value,
if (!to_raw) {
f = (value & 0x60) >> 5;
y = value & 0x1f;
- value = (1 << y) * (4 + f) * rp->time_unit / 4;
+ value = (1 << y) * (4 + f) * rd->time_unit / 4;
} else {
- if (value < rp->time_unit)
+ if (value < rd->time_unit)
return 0;
- do_div(value, rp->time_unit);
+ do_div(value, rd->time_unit);
y = ilog2(value);
/*
@@ -1044,7 +1020,7 @@ static u64 rapl_compute_time_window_core(struct rapl_package *rp, u64 value,
return value;
}
-static u64 rapl_compute_time_window_atom(struct rapl_package *rp, u64 value,
+static u64 rapl_compute_time_window_atom(struct rapl_domain *rd, u64 value,
bool to_raw)
{
/*
@@ -1052,9 +1028,9 @@ static u64 rapl_compute_time_window_atom(struct rapl_package *rp, u64 value,
* where time_unit is default to 1 sec. Never 0.
*/
if (!to_raw)
- return (value) ? value * rp->time_unit : rp->time_unit;
+ return (value) ? value * rd->time_unit : rd->time_unit;
- value = div64_u64(value, rp->time_unit);
+ value = div64_u64(value, rd->time_unit);
return value;
}
@@ -1300,6 +1276,40 @@ static int rapl_check_domain(int cpu, int domain, struct rapl_package *rp)
}
/*
+ * Get per domain energy/power/time unit.
+ * RAPL Interfaces without per domain unit register will use the package
+ * scope unit register to set per domain units.
+ */
+static int rapl_get_domain_unit(struct rapl_domain *rd)
+{
+ struct rapl_defaults *defaults = get_defaults(rd->rp);
+ int ret;
+
+ if (!rd->regs[RAPL_DOMAIN_REG_UNIT]) {
+ if (!rd->rp->priv->reg_unit) {
+ pr_err("No valid Unit register found\n");
+ return -ENODEV;
+ }
+ rd->regs[RAPL_DOMAIN_REG_UNIT] = rd->rp->priv->reg_unit;
+ }
+
+ if (!defaults->check_unit) {
+ pr_err("missing .check_unit() callback\n");
+ return -ENODEV;
+ }
+
+ ret = defaults->check_unit(rd, rd->rp->lead_cpu);
+ if (ret)
+ return ret;
+
+ if (rd->id == RAPL_DOMAIN_DRAM && defaults->dram_domain_energy_unit)
+ rd->energy_unit = defaults->dram_domain_energy_unit;
+ if (rd->id == RAPL_DOMAIN_PLATFORM && defaults->psys_domain_energy_unit)
+ rd->energy_unit = defaults->psys_domain_energy_unit;
+ return 0;
+}
+
+/*
* Check if power limits are available. Two cases when they are not available:
* 1. Locked by BIOS, in this case we still provide read-only access so that
* users can see what limit is set by the BIOS.
@@ -1359,8 +1369,10 @@ static int rapl_detect_domains(struct rapl_package *rp, int cpu)
rapl_init_domains(rp);
- for (rd = rp->domains; rd < rp->domains + rp->nr_domains; rd++)
+ for (rd = rp->domains; rd < rp->domains + rp->nr_domains; rd++) {
+ rapl_get_domain_unit(rd);
rapl_detect_powerlimit(rd);
+ }
return 0;
}
@@ -1418,7 +1430,6 @@ struct rapl_package *rapl_add_package(int cpu, struct rapl_if_priv *priv)
{
int id = topology_logical_die_id(cpu);
struct rapl_package *rp;
- struct rapl_defaults *defaults;
int ret;
rp = kzalloc(sizeof(struct rapl_package), GFP_KERNEL);
@@ -1442,9 +1453,8 @@ struct rapl_package *rapl_add_package(int cpu, struct rapl_if_priv *priv)
snprintf(rp->name, PACKAGE_DOMAIN_NAME_LENGTH, "package-%d",
topology_physical_package_id(cpu));
- defaults = get_defaults(rp);
/* check if the package contains valid domains */
- if (rapl_detect_domains(rp, cpu) || defaults->check_unit(rp, cpu)) {
+ if (rapl_detect_domains(rp, cpu)) {
ret = -ENODEV;
goto err_free_package;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-08-28 09:17:05 +0300