From b94afb61cdaeaa86f77846fdec419eb5e9d9f537 Mon Sep 17 00:00:00 2001 From: Kevin Wang Date: Fri, 2 Aug 2019 12:01:00 +0800 Subject: [PATCH] drm/amd/powerplay: honor hw limit on fetching metrics data for navi10 too frequently to update mertrics table will cause smu internal error. Signed-off-by: Kevin Wang Reviewed-by: Evan Quan Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/powerplay/navi10_ppt.c | 56 +++++++++++++++------- 1 file changed, 38 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c index 106352a4fb82..3fbf622f9a87 100644 --- a/drivers/gpu/drm/amd/powerplay/navi10_ppt.c +++ b/drivers/gpu/drm/amd/powerplay/navi10_ppt.c @@ -516,6 +516,8 @@ static int navi10_store_powerplay_table(struct smu_context *smu) static int navi10_tables_init(struct smu_context *smu, struct smu_table *tables) { + struct smu_table_context *smu_table = &smu->smu_table; + SMU_TABLE_INIT(tables, SMU_TABLE_PPTABLE, sizeof(PPTable_t), PAGE_SIZE, AMDGPU_GEM_DOMAIN_VRAM); SMU_TABLE_INIT(tables, SMU_TABLE_WATERMARKS, sizeof(Watermarks_t), @@ -530,9 +532,35 @@ static int navi10_tables_init(struct smu_context *smu, struct smu_table *tables) sizeof(DpmActivityMonitorCoeffInt_t), PAGE_SIZE, AMDGPU_GEM_DOMAIN_VRAM); + smu_table->metrics_table = kzalloc(sizeof(SmuMetrics_t), GFP_KERNEL); + if (!smu_table->metrics_table) + return -ENOMEM; + smu_table->metrics_time = 0; + return 0; } +static int navi10_get_metrics_table(struct smu_context *smu, + SmuMetrics_t *metrics_table) +{ + struct smu_table_context *smu_table= &smu->smu_table; + int ret = 0; + + if (!smu_table->metrics_time || time_after(jiffies, smu_table->metrics_time + HZ / 1000)) { + ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, 0, + (void *)smu_table->metrics_table, false); + if (ret) { + pr_info("Failed to export SMU metrics table!\n"); + return ret; + } + smu_table->metrics_time = jiffies; + } + + memcpy(metrics_table, smu_table->metrics_table, sizeof(SmuMetrics_t)); + + return ret; +} + static int navi10_allocate_dpm_context(struct smu_context *smu) { struct smu_dpm_context *smu_dpm = &smu->smu_dpm; @@ -612,15 +640,10 @@ static int navi10_get_current_clk_freq_by_table(struct smu_context *smu, enum smu_clk_type clk_type, uint32_t *value) { - static SmuMetrics_t metrics; int ret = 0, clk_id = 0; + SmuMetrics_t metrics; - if (!value) - return -EINVAL; - - memset(&metrics, 0, sizeof(metrics)); - - ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, 0, (void *)&metrics, false); + ret = navi10_get_metrics_table(smu, &metrics); if (ret) return ret; @@ -908,8 +931,9 @@ static int navi10_get_gpu_power(struct smu_context *smu, uint32_t *value) if (!value) return -EINVAL; - ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, 0, (void *)&metrics, - false); + ret = navi10_get_metrics_table(smu, &metrics); + if (ret) + return ret; if (ret) return ret; @@ -928,10 +952,7 @@ static int navi10_get_current_activity_percent(struct smu_context *smu, if (!value) return -EINVAL; - msleep(1); - - ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, 0, - (void *)&metrics, false); + ret = navi10_get_metrics_table(smu, &metrics); if (ret) return ret; @@ -970,10 +991,9 @@ static int navi10_get_fan_speed_rpm(struct smu_context *smu, if (!speed) return -EINVAL; - memset(&metrics, 0, sizeof(metrics)); - - ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, 0, - (void *)&metrics, false); + ret = navi10_get_metrics_table(smu, &metrics); + if (ret) + return ret; if (ret) return ret; @@ -1326,7 +1346,7 @@ static int navi10_thermal_get_temperature(struct smu_context *smu, if (!value) return -EINVAL; - ret = smu_update_table(smu, SMU_TABLE_SMU_METRICS, 0, (void *)&metrics, false); + ret = navi10_get_metrics_table(smu, &metrics); if (ret) return ret; -- 2.30.2