drm/amd/powerplay: add function to check pptable for smu11

Add smu_v11_0_check_pptable function for smu11.
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Kevin Wang <Kevin1.Wang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -102,6 +102,7 @@ struct smu_context
 
 struct pptable_funcs {
 	int (*store_powerplay_table)(struct smu_context *smu);
+	int (*check_powerplay_table)(struct smu_context *smu);
 };
 
 struct smu_funcs
@@ -180,6 +181,8 @@ struct smu_funcs
 	((smu)->funcs->send_smc_msg_with_param? (smu)->funcs->send_smc_msg_with_param((smu), (msg), (param)) : 0)
 #define smu_store_powerplay_table(smu) \
 	((smu)->ppt_funcs->store_powerplay_table ? (smu)->ppt_funcs->store_powerplay_table((smu)) : 0)
+#define smu_check_powerplay_table(smu) \
+	((smu)->ppt_funcs->check_powerplay_table ? (smu)->ppt_funcs->check_powerplay_table((smu)) : 0)
 
 extern int smu_get_atom_data_table(struct smu_context *smu, uint32_t table,
 				   uint16_t *size, uint8_t *frev, uint8_t *crev,

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

@@ -486,6 +486,14 @@ static int smu_v11_0_notify_memory_pool_location(struct smu_context *smu)
 	return ret;
 }
 
+static int smu_v11_0_check_pptable(struct smu_context *smu)
+{
+	int ret;
+
+	ret = smu_check_powerplay_table(smu);
+	return ret;
+}
+
 static int smu_v11_0_parse_pptable(struct smu_context *smu)
 {
 	int ret;
@@ -520,6 +528,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
 	.get_vbios_bootup_values = smu_v11_0_get_vbios_bootup_values,
 	.get_clk_info_from_vbios = smu_v11_0_get_clk_info_from_vbios,
 	.notify_memory_pool_location = smu_v11_0_notify_memory_pool_location,
+	.check_pptable = smu_v11_0_check_pptable,
 	.parse_pptable = smu_v11_0_parse_pptable,
 };
 

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

@@ -52,8 +52,29 @@ static int vega20_store_powerplay_table(struct smu_context *smu)
 	return 0;
 }
 
+static int vega20_check_powerplay_table(struct smu_context *smu)
+{
+	ATOM_Vega20_POWERPLAYTABLE *powerplay_table = NULL;
+	struct smu_table_context *table_context = &smu->smu_table;
+
+	powerplay_table = table_context->power_play_table;
+
+	if (powerplay_table->sHeader.format_revision < ATOM_VEGA20_TABLE_REVISION_VEGA20) {
+		pr_err("Unsupported PPTable format!");
+		return -EINVAL;
+	}
+
+	if (!powerplay_table->sHeader.structuresize) {
+		pr_err("Invalid PowerPlay Table!");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static const struct pptable_funcs vega20_ppt_funcs = {
 	.store_powerplay_table = vega20_store_powerplay_table,
+	.check_powerplay_table = vega20_check_powerplay_table,
 };
 
 void vega20_set_ppt_funcs(struct smu_context *smu)