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drm/amd/pm: fix smu13 power limit default/cap calculation

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smu_v13_0_0_get_power_limit() and smu_v13_0_7_get_power_limit() mix
runtime power_limit with PP table limits when reporting default/min/max.

When current power limit query succeeds, default_power_limit was set to the
runtime value instead of the PP table default, and min/max could be derived
from inconsistent bases (MsgLimits/runtime), leading to incorrect cap info.

Use SocketPowerLimitAc/Dc as the PP default base (pp_limit), keep
current_power_limit as runtime value, and derive min/max from pp_limit with
OD percentages.

Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5227
Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yang Wang 2026-05-19 11:18:12 +08:00 committed by Alex Deucher
parent 4e8ee1afee
commit 1eaf26db95
2 changed files with 35 additions and 29 deletions
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32
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
View File

@ -2390,28 +2390,30 @@ static int smu_v13_0_0_enable_mgpu_fan_boost(struct smu_context *smu)
}
static int smu_v13_0_0_get_power_limit(struct smu_context *smu,
uint32_t *current_power_limit,
uint32_t *default_power_limit,
uint32_t *max_power_limit,
uint32_t *min_power_limit)
uint32_t *current_power_limit,
uint32_t *default_power_limit,
uint32_t *max_power_limit,
uint32_t *min_power_limit)
{
struct smu_table_context *table_context = &smu->smu_table;
struct smu_13_0_0_powerplay_table *powerplay_table =
(struct smu_13_0_0_powerplay_table *)table_context->power_play_table;
PPTable_t *pptable = table_context->driver_pptable;
SkuTable_t *skutable = &pptable->SkuTable;
uint32_t power_limit, od_percent_upper = 0, od_percent_lower = 0;
uint32_t msg_limit = skutable->MsgLimits.Power[PPT_THROTTLER_PPT0][POWER_SOURCE_AC];
if (smu_v13_0_get_current_power_limit(smu, &power_limit))
power_limit = smu->adev->pm.ac_power ?
uint32_t pp_limit = smu->adev->pm.ac_power ?
skutable->SocketPowerLimitAc[PPT_THROTTLER_PPT0] :
skutable->SocketPowerLimitDc[PPT_THROTTLER_PPT0];
uint32_t power_limit = 0, od_percent_upper = 0, od_percent_lower = 0;
int ret;
if (current_power_limit) {
ret = smu_v13_0_get_current_power_limit(smu, &power_limit);
if (ret)
*current_power_limit = pp_limit;
}
if (current_power_limit)
*current_power_limit = power_limit;
if (default_power_limit)
*default_power_limit = power_limit;
*default_power_limit = pp_limit;
if (powerplay_table) {
if (smu->od_enabled &&
@ -2425,15 +2427,15 @@ static int smu_v13_0_0_get_power_limit(struct smu_context *smu,
}
dev_dbg(smu->adev->dev, "od percent upper:%d, od percent lower:%d (default power: %d)\n",
od_percent_upper, od_percent_lower, power_limit);
od_percent_upper, od_percent_lower, pp_limit);
if (max_power_limit) {
*max_power_limit = msg_limit * (100 + od_percent_upper);
*max_power_limit = pp_limit * (100 + od_percent_upper);
*max_power_limit /= 100;
}
if (min_power_limit) {
*min_power_limit = power_limit * (100 - od_percent_lower);
*min_power_limit = pp_limit * (100 - od_percent_lower);
*min_power_limit /= 100;
}

32
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_7_ppt.c
View File

@ -2372,28 +2372,32 @@ static int smu_v13_0_7_enable_mgpu_fan_boost(struct smu_context *smu)
}
static int smu_v13_0_7_get_power_limit(struct smu_context *smu,
uint32_t *current_power_limit,
uint32_t *default_power_limit,
uint32_t *max_power_limit,
uint32_t *min_power_limit)
uint32_t *current_power_limit,
uint32_t *default_power_limit,
uint32_t *max_power_limit,
uint32_t *min_power_limit)
{
struct smu_table_context *table_context = &smu->smu_table;
struct smu_13_0_7_powerplay_table *powerplay_table =
(struct smu_13_0_7_powerplay_table *)table_context->power_play_table;
PPTable_t *pptable = table_context->driver_pptable;
SkuTable_t *skutable = &pptable->SkuTable;
uint32_t power_limit, od_percent_upper = 0, od_percent_lower = 0;
uint32_t msg_limit = skutable->MsgLimits.Power[PPT_THROTTLER_PPT0][POWER_SOURCE_AC];
if (smu_v13_0_get_current_power_limit(smu, &power_limit))
power_limit = smu->adev->pm.ac_power ?
uint32_t pp_limit = smu->adev->pm.ac_power ?
skutable->SocketPowerLimitAc[PPT_THROTTLER_PPT0] :
skutable->SocketPowerLimitDc[PPT_THROTTLER_PPT0];
uint32_t power_limit = 0, od_percent_upper = 0, od_percent_lower = 0;
int ret;
if (current_power_limit) {
ret = smu_v13_0_get_current_power_limit(smu, &power_limit);
if (ret)
power_limit = pp_limit;
if (current_power_limit)
*current_power_limit = power_limit;
}
if (default_power_limit)
*default_power_limit = power_limit;
*default_power_limit = pp_limit;
if (powerplay_table) {
if (smu->od_enabled &&
@ -2407,15 +2411,15 @@ static int smu_v13_0_7_get_power_limit(struct smu_context *smu,
}
dev_dbg(smu->adev->dev, "od percent upper:%d, od percent lower:%d (default power: %d)\n",
od_percent_upper, od_percent_lower, power_limit);
od_percent_upper, od_percent_lower, pp_limit);
if (max_power_limit) {
*max_power_limit = msg_limit * (100 + od_percent_upper);
*max_power_limit = pp_limit * (100 + od_percent_upper);
*max_power_limit /= 100;
}
if (min_power_limit) {
*min_power_limit = power_limit * (100 - od_percent_lower);
*min_power_limit = pp_limit * (100 - od_percent_lower);
*min_power_limit /= 100;
}