drm/amd/pm: invalidate hdp before CPU access the memory written by GPU

To eliminate the possible influence by outdated HDP read cache.

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

diff --git a/drivers/gpu/drm/amd/pm/powerplay/smumgr/smu10_smumgr.c b/drivers/gpu/drm/amd/pm/powerplay/smumgr/smu10_smumgr.c
index ea2279b..47b34c6 100644 (file)
--- a/drivers/gpu/drm/amd/pm/powerplay/smumgr/smu10_smumgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/smumgr/smu10_smumgr.c
@@ -139,8 +139,7 @@ static int smu10_copy_table_from_smc(struct pp_hwmgr *hwmgr,
                        priv->smu_tables.entry[table_id].table_id,
                        NULL);
 
-       /* flush hdp cache */
-       amdgpu_asic_flush_hdp(adev, NULL);
+       amdgpu_asic_invalidate_hdp(adev, NULL);
 
        memcpy(table, (uint8_t *)priv->smu_tables.entry[table_id].table,
                        priv->smu_tables.entry[table_id].size);

diff --git a/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega10_smumgr.c b/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega10_smumgr.c
index 85e08a5..a70d738 100644 (file)
--- a/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega10_smumgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega10_smumgr.c
@@ -60,8 +60,7 @@ static int vega10_copy_table_from_smc(struct pp_hwmgr *hwmgr,
                        priv->smu_tables.entry[table_id].table_id,
                        NULL);
 
-       /* flush hdp cache */
-       amdgpu_asic_flush_hdp(adev, NULL);
+       amdgpu_asic_invalidate_hdp(adev, NULL);
 
        memcpy(table, priv->smu_tables.entry[table_id].table,
                        priv->smu_tables.entry[table_id].size);

diff --git a/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega12_smumgr.c b/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega12_smumgr.c
index f54df76..b52ce13 100644 (file)
--- a/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega12_smumgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega12_smumgr.c
@@ -68,8 +68,7 @@ static int vega12_copy_table_from_smc(struct pp_hwmgr *hwmgr,
                        "[CopyTableFromSMC] Attempt to Transfer Table From SMU Failed!",
                        return -EINVAL);
 
-       /* flush hdp cache */
-       amdgpu_asic_flush_hdp(adev, NULL);
+       amdgpu_asic_invalidate_hdp(adev, NULL);
 
        memcpy(table, priv->smu_tables.entry[table_id].table,
                        priv->smu_tables.entry[table_id].size);

diff --git a/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega20_smumgr.c b/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega20_smumgr.c
index cf43629..741fbc8 100644 (file)
--- a/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega20_smumgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/smumgr/vega20_smumgr.c
@@ -192,8 +192,7 @@ static int vega20_copy_table_from_smc(struct pp_hwmgr *hwmgr,
                        "[CopyTableFromSMC] Attempt to Transfer Table From SMU Failed!",
                        return ret);
 
-       /* flush hdp cache */
-       amdgpu_asic_flush_hdp(adev, NULL);
+       amdgpu_asic_invalidate_hdp(adev, NULL);
 
        memcpy(table, priv->smu_tables.entry[table_id].table,
                        priv->smu_tables.entry[table_id].size);
@@ -307,8 +306,7 @@ int vega20_get_activity_monitor_coeff(struct pp_hwmgr *hwmgr,
                        "[GetActivityMonitor] Attempt to Transfer Table From SMU Failed!",
                        return ret);
 
-       /* flush hdp cache */
-       amdgpu_asic_flush_hdp(adev, NULL);
+       amdgpu_asic_invalidate_hdp(adev, NULL);
 
        memcpy(table, priv->smu_tables.entry[TABLE_ACTIVITY_MONITOR_COEFF].table,
                        priv->smu_tables.entry[TABLE_ACTIVITY_MONITOR_COEFF].size);

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
index dc28f22..f826076 100644 (file)
--- a/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu_cmn.c
@@ -655,7 +655,7 @@ int smu_cmn_update_table(struct smu_context *smu,
                return ret;
 
        if (!drv2smu) {
-               amdgpu_asic_flush_hdp(adev, NULL);
+               amdgpu_asic_invalidate_hdp(adev, NULL);
                memcpy(table_data, table->cpu_addr, table_size);
        }