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drm/amd/pm: Add thermal alert logging to smu15.0.8

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Add logging for thermal events in SMUv15.0.8 SOCs

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2026-03-09 14:19:05 +05:30 committed by Alex Deucher
parent 3006cbeeaa
commit e86983569e
1 changed files with 65 additions and 0 deletions
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65
drivers/gpu/drm/amd/pm/swsmu/smu15/smu_v15_0_8_ppt.c
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@ -173,6 +173,13 @@ static const struct cmn2asic_mapping smu_v15_0_8_table_map[SMU_TABLE_COUNT] = {
TAB_MAP(I2C_COMMANDS),
};
static const uint8_t smu_v15_0_8_throttler_map[] = {
[THROTTLER_PROCHOT_BIT] = (SMU_THROTTLER_PROCHOT_GFX_BIT),
[THROTTLER_THERMAL_SOCKET_BIT] = (SMU_THROTTLER_TEMP_GPU_BIT),
[THROTTLER_THERMAL_VR_BIT] = (SMU_THROTTLER_TEMP_VR_GFX_BIT),
[THROTTLER_THERMAL_HBM_BIT] = (SMU_THROTTLER_TEMP_MEM_BIT),
};
static size_t smu_v15_0_8_get_system_metrics_size(void)
{
return sizeof(SystemMetricsTable_t);
@ -2274,6 +2281,63 @@ static int smu_v15_0_8_get_ppt_limit(struct smu_context *smu,
return -EOPNOTSUPP;
}
static uint32_t smu_v15_0_8_get_throttler_status(struct smu_context *smu)
{
struct smu_power_context *smu_power = &smu->smu_power;
struct smu_15_0_power_context *power_context = smu_power->power_context;
uint32_t throttler_status = 0;
throttler_status = atomic_read(&power_context->throttle_status);
dev_dbg(smu->adev->dev, "SMU Throttler status: %u", throttler_status);
return throttler_status;
}
static const char *const throttling_logging_label[] = {
[THROTTLER_PROCHOT_BIT] = "Prochot",
[THROTTLER_THERMAL_SOCKET_BIT] = "SOC",
[THROTTLER_THERMAL_VR_BIT] = "VR",
[THROTTLER_THERMAL_HBM_BIT] = "HBM"
};
static void smu_v15_0_8_log_thermal_throttling_event(struct smu_context *smu)
{
int throttler_idx, throttling_events = 0, buf_idx = 0;
struct amdgpu_device *adev = smu->adev;
uint32_t throttler_status;
char log_buf[256];
throttler_status = smu_v15_0_8_get_throttler_status(smu);
if (!throttler_status)
return;
memset(log_buf, 0, sizeof(log_buf));
for (throttler_idx = 0;
throttler_idx < ARRAY_SIZE(throttling_logging_label);
throttler_idx++) {
if (throttler_status & (1U << throttler_idx)) {
throttling_events++;
buf_idx += snprintf(
log_buf + buf_idx, sizeof(log_buf) - buf_idx,
"%s%s", throttling_events > 1 ? " and " : "",
throttling_logging_label[throttler_idx]);
if (buf_idx >= sizeof(log_buf)) {
dev_err(adev->dev, "buffer overflow!\n");
log_buf[sizeof(log_buf) - 1] = '\0';
break;
}
}
}
dev_warn(adev->dev,
"WARN: GPU is throttled, expect performance decrease. %s.\n",
log_buf);
kgd2kfd_smi_event_throttle(
smu->adev->kfd.dev,
smu_cmn_get_indep_throttler_status(throttler_status,
smu_v15_0_8_throttler_map));
}
static int smu_v15_0_8_enable_thermal_alert(struct smu_context *smu)
{
if (!smu->irq_source.num_types)
@ -2301,6 +2365,7 @@ static const struct pptable_funcs smu_v15_0_8_ppt_funcs = {
.register_irq_handler = smu_v15_0_8_register_irq_handler,
.enable_thermal_alert = smu_v15_0_8_enable_thermal_alert,
.disable_thermal_alert = smu_v15_0_disable_thermal_alert,
.log_thermal_throttling_event = smu_v15_0_8_log_thermal_throttling_event,
.setup_pptable = smu_v15_0_8_setup_pptable,
.get_pp_feature_mask = smu_cmn_get_pp_feature_mask,
.wait_for_event = smu_v15_0_wait_for_event,