drm/amd/powerplay: cache the watermark settings on system memory

So that we do not need to allocate a piece of VRAM for it. This
is a preparation for coming change which unifies the VRAM address
for all driver tables interaction with SMU.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/amdgpu_smu.c

@@ -1929,32 +1929,25 @@ int smu_set_df_cstate(struct smu_context *smu,
 
 int smu_write_watermarks_table(struct smu_context *smu)
 {
-	int ret = 0;
-	struct smu_table_context *smu_table = &smu->smu_table;
-	struct smu_table *table = NULL;
+	void *watermarks_table = smu->smu_table.watermarks_table;
 
-	table = &smu_table->tables[SMU_TABLE_WATERMARKS];
-
-	if (!table->cpu_addr)
+	if (!watermarks_table)
 		return -EINVAL;
 
-	ret = smu_update_table(smu, SMU_TABLE_WATERMARKS, 0, table->cpu_addr,
+	return smu_update_table(smu,
+				SMU_TABLE_WATERMARKS,
+				0,
+				watermarks_table,
 				true);
-
-	return ret;
 }
 
 int smu_set_watermarks_for_clock_ranges(struct smu_context *smu,
 		struct dm_pp_wm_sets_with_clock_ranges_soc15 *clock_ranges)
 {
-	struct smu_table *watermarks;
-	void *table;
-
-	if (!smu->smu_table.tables)
-		return 0;
+	void *table = smu->smu_table.watermarks_table;
 
-	watermarks = &smu->smu_table.tables[SMU_TABLE_WATERMARKS];
-	table = watermarks->cpu_addr;
+	if (!table)
+		return -EINVAL;
 
 	mutex_lock(&smu->mutex);
 

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

@@ -254,6 +254,7 @@ struct smu_table_context
 	unsigned long			metrics_time;
 	void				*metrics_table;
 	void				*clocks_table;
+	void				*watermarks_table;
 
 	void				*max_sustainable_clocks;
 	struct smu_bios_boot_up_values	boot_values;

drivers/gpu/drm/amd/powerplay/navi10_ppt.c

@@ -555,6 +555,10 @@ static int navi10_tables_init(struct smu_context *smu, struct smu_table *tables)
 		return -ENOMEM;
 	smu_table->metrics_time = 0;
 
+	smu_table->watermarks_table = kzalloc(sizeof(Watermarks_t), GFP_KERNEL);
+	if (!smu_table->watermarks_table)
+		return -ENOMEM;
+
 	return 0;
 }
 

drivers/gpu/drm/amd/powerplay/renoir_ppt.c

@@ -209,6 +209,10 @@ static int renoir_tables_init(struct smu_context *smu, struct smu_table *tables)
 		return -ENOMEM;
 	smu_table->metrics_time = 0;
 
+	smu_table->watermarks_table = kzalloc(sizeof(Watermarks_t), GFP_KERNEL);
+	if (!smu_table->watermarks_table)
+		return -ENOMEM;
+
 	return 0;
 }
 

drivers/gpu/drm/amd/powerplay/smu_v11_0.c

@@ -450,8 +450,10 @@ int smu_v11_0_fini_smc_tables(struct smu_context *smu)
 
 	kfree(smu_table->tables);
 	kfree(smu_table->metrics_table);
+	kfree(smu_table->watermarks_table);
 	smu_table->tables = NULL;
 	smu_table->metrics_table = NULL;
+	smu_table->watermarks_table = NULL;
 	smu_table->metrics_time = 0;
 
 	ret = smu_v11_0_fini_dpm_context(smu);

drivers/gpu/drm/amd/powerplay/vega20_ppt.c

@@ -338,6 +338,10 @@ static int vega20_tables_init(struct smu_context *smu, struct smu_table *tables)
 		return -ENOMEM;
 	smu_table->metrics_time = 0;
 
+	smu_table->watermarks_table = kzalloc(sizeof(Watermarks_t), GFP_KERNEL);
+	if (!smu_table->watermarks_table)
+		return -ENOMEM;
+
 	return 0;
 }