drm/amd/powerplay: add error messages on some critical paths

Helpful for error diagnostic.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 0c5e062..1153847 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -457,18 +457,30 @@ int smu_dpm_set_power_gate(struct smu_context *smu, uint32_t block_type,
        switch (block_type) {
        case AMD_IP_BLOCK_TYPE_UVD:
                ret = smu_dpm_set_uvd_enable(smu, !gate);
+               if (ret)
+                       dev_err(smu->adev->dev, "Failed to power %s UVD!\n",
+                               gate ? "gate" : "ungate");
                break;
        case AMD_IP_BLOCK_TYPE_VCE:
                ret = smu_dpm_set_vce_enable(smu, !gate);
                break;
        case AMD_IP_BLOCK_TYPE_GFX:
                ret = smu_gfx_off_control(smu, gate);
+               if (ret)
+                       dev_err(smu->adev->dev, "Failed to %s gfxoff!\n",
+                               gate ? "enable" : "disable");
                break;
        case AMD_IP_BLOCK_TYPE_SDMA:
                ret = smu_powergate_sdma(smu, gate);
+               if (ret)
+                       dev_err(smu->adev->dev, "Failed to power %s SDMA!\n",
+                               gate ? "gate" : "ungate");
                break;
        case AMD_IP_BLOCK_TYPE_JPEG:
                ret = smu_dpm_set_jpeg_enable(smu, !gate);
+               if (ret)
+                       dev_err(smu->adev->dev, "Failed to power %s JPEG!\n",
+                               gate ? "gate" : "ungate");
                break;
        default:
                break;
@@ -788,8 +800,10 @@ static int smu_late_init(void *handle)
                return 0;
 
        ret = smu_set_default_od_settings(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to setup default OD settings!\n");
                return ret;
+       }
 
        /*
         * Set initialized values (get from vbios) to dpm tables context such as
@@ -797,20 +811,28 @@ static int smu_late_init(void *handle)
         * type of clks.
         */
        ret = smu_populate_smc_tables(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to setup default dpm clock tables!\n");
                return ret;
+       }
 
        ret = smu_init_max_sustainable_clocks(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to init max sustainable clocks!\n");
                return ret;
+       }
 
        ret = smu_populate_umd_state_clk(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to populate UMD state clocks!\n");
                return ret;
+       }
 
        ret = smu_get_power_limit(smu, &smu->default_power_limit, false, false);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to get default power limit!\n");
                return ret;
+       }
 
        smu_get_unique_id(smu);
 
@@ -954,6 +976,8 @@ static int smu_alloc_memory_pool(struct smu_context *smu)
                                              &memory_pool->bo,
                                              &memory_pool->mc_address,
                                              &memory_pool->cpu_addr);
+               if (ret)
+                       dev_err(adev->dev, "VRAM allocation for dramlog failed!\n");
                break;
        default:
                break;
@@ -1147,27 +1171,35 @@ static int smu_smc_hw_setup(struct smu_context *smu)
        }
 
        ret = smu_init_display_count(smu, 0);
-       if (ret)
+       if (ret) {
+               dev_info(adev->dev, "Failed to pre-set display count as 0!\n");
                return ret;
+       }
 
        ret = smu_set_driver_table_location(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to SetDriverDramAddr!\n");
                return ret;
+       }
 
        /*
         * Set PMSTATUSLOG table bo address with SetToolsDramAddr MSG for tools.
         */
        ret = smu_set_tool_table_location(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to SetToolsDramAddr!\n");
                return ret;
+       }
 
        /*
         * Use msg SetSystemVirtualDramAddr and DramLogSetDramAddr can notify
         * pool location.
         */
        ret = smu_notify_memory_pool_location(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to SetDramLogDramAddr!\n");
                return ret;
+       }
 
        /* smu_dump_pptable(smu); */
        /*
@@ -1175,8 +1207,10 @@ static int smu_smc_hw_setup(struct smu_context *smu)
         * SetDriverDramAddr and TransferTableDram2Smu.
         */
        ret = smu_write_pptable(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to transfer pptable to SMC!\n");
                return ret;
+       }
 
        /* issue Run*Btc msg */
        ret = smu_run_btc(smu);
@@ -1184,12 +1218,16 @@ static int smu_smc_hw_setup(struct smu_context *smu)
                return ret;
 
        ret = smu_feature_set_allowed_mask(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to set driver allowed features mask!\n");
                return ret;
+       }
 
        ret = smu_system_features_control(smu, true);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to enable requested dpm features!\n");
                return ret;
+       }
 
        if (!smu_is_dpm_running(smu))
                dev_info(adev->dev, "dpm has been disabled\n");
@@ -1199,8 +1237,10 @@ static int smu_smc_hw_setup(struct smu_context *smu)
                return ret;
 
        ret = smu_enable_thermal_alert(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to enable thermal alert!\n");
                return ret;
+       }
 
        ret = smu_i2c_eeprom_init(smu, &adev->pm.smu_i2c);
        if (ret)
@@ -1284,7 +1324,7 @@ static int smu_hw_init(void *handle)
 
        ret = smu_start_smc_engine(smu);
        if (ret) {
-               dev_err(adev->dev, "SMU is not ready yet!\n");
+               dev_err(adev->dev, "SMC engine is not correctly up!\n");
                return ret;
        }
 
@@ -1300,29 +1340,32 @@ static int smu_hw_init(void *handle)
 
        /* get boot_values from vbios to set revision, gfxclk, and etc. */
        ret = smu_get_vbios_bootup_values(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to get VBIOS boot clock values!\n");
                return ret;
+       }
 
        ret = smu_setup_pptable(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Failed to setup pptable!\n");
                return ret;
+       }
 
        ret = smu_get_driver_allowed_feature_mask(smu);
        if (ret)
-               goto failed;
+               return ret;
 
        ret = smu_smc_hw_setup(smu);
-       if (ret)
-               goto failed;
+       if (ret) {
+               dev_err(adev->dev, "Failed to setup smc hw!\n");
+               return ret;
+       }
 
        adev->pm.dpm_enabled = true;
 
        dev_info(adev->dev, "SMU is initialized successfully!\n");
 
        return 0;
-
-failed:
-       return ret;
 }
 
 static int smu_disable_dpms(struct smu_context *smu)
@@ -1395,13 +1438,15 @@ static int smu_smc_hw_cleanup(struct smu_context *smu)
 
        ret = smu_disable_thermal_alert(smu);
        if (ret) {
-               dev_warn(adev->dev, "Fail to stop thermal control!\n");
+               dev_err(adev->dev, "Fail to disable thermal alert!\n");
                return ret;
        }
 
        ret = smu_disable_dpms(smu);
-       if (ret)
+       if (ret) {
+               dev_err(adev->dev, "Fail to disable dpm features!\n");
                return ret;
+       }
 
        return 0;
 }
@@ -1493,13 +1538,15 @@ static int smu_resume(void *handle)
 
        ret = smu_start_smc_engine(smu);
        if (ret) {
-               dev_err(adev->dev, "SMU is not ready yet!\n");
-               goto failed;
+               dev_err(adev->dev, "SMC engine is not correctly up!\n");
+               return ret;
        }
 
        ret = smu_smc_hw_setup(smu);
-       if (ret)
-               goto failed;
+       if (ret) {
+               dev_err(adev->dev, "Failed to setup smc hw!\n");
+               return ret;
+       }
 
        if (smu->is_apu)
                smu_set_gfx_cgpg(&adev->smu, true);
@@ -1511,9 +1558,6 @@ static int smu_resume(void *handle)
        dev_info(adev->dev, "SMU is resumed successfully!\n");
 
        return 0;
-
-failed:
-       return ret;
 }
 
 int smu_display_configuration_change(struct smu_context *smu,
@@ -2589,6 +2633,9 @@ int smu_set_xgmi_pstate(struct smu_context *smu,
 
        mutex_unlock(&smu->mutex);
 
+       if(ret)
+               dev_err(smu->adev->dev, "Failed to set XGMI pstate!\n");
+
        return ret;
 }
 
@@ -2660,6 +2707,9 @@ int smu_baco_enter(struct smu_context *smu)
 
        mutex_unlock(&smu->mutex);
 
+       if (ret)
+               dev_err(smu->adev->dev, "Failed to enter BACO state!\n");
+
        return ret;
 }
 
@@ -2677,6 +2727,9 @@ int smu_baco_exit(struct smu_context *smu)
 
        mutex_unlock(&smu->mutex);
 
+       if (ret)
+               dev_err(smu->adev->dev, "Failed to exit BACO state!\n");
+
        return ret;
 }
 
@@ -2694,6 +2747,9 @@ int smu_mode2_reset(struct smu_context *smu)
 
        mutex_unlock(&smu->mutex);
 
+       if (ret)
+               dev_err(smu->adev->dev, "Mode2 reset failed!\n");
+
        return ret;
 }