drm/amd/pm: allocate a new buffer for pstate dummy reading (2379be2f) · Commits · 戴 / test

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

+1 −0

Original line number	Diff line number	Diff line
		@@ -270,6 +270,7 @@ struct smu_table_context
		*/
		struct smu_table driver_table;
		struct smu_table memory_pool;
		struct smu_table dummy_read_1_table;
		uint8_t thermal_controller_type;

		void *overdrive_table;

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

+45 −0

Original line number	Diff line number	Diff line
		@@ -663,6 +663,45 @@ static int smu_free_memory_pool(struct smu_context *smu)
		return 0;
		}

		static int smu_alloc_dummy_read_table(struct smu_context *smu)
		{
		struct smu_table_context *smu_table = &smu->smu_table;
		struct smu_table *dummy_read_1_table =
		&smu_table->dummy_read_1_table;
		struct amdgpu_device *adev = smu->adev;
		int ret = 0;

		dummy_read_1_table->size = 0x40000;
		dummy_read_1_table->align = PAGE_SIZE;
		dummy_read_1_table->domain = AMDGPU_GEM_DOMAIN_VRAM;

		ret = amdgpu_bo_create_kernel(adev,
		dummy_read_1_table->size,
		dummy_read_1_table->align,
		dummy_read_1_table->domain,
		&dummy_read_1_table->bo,
		&dummy_read_1_table->mc_address,
		&dummy_read_1_table->cpu_addr);
		if (ret)
		dev_err(adev->dev, "VRAM allocation for dummy read table failed!\n");

		return ret;
		}

		static void smu_free_dummy_read_table(struct smu_context *smu)
		{
		struct smu_table_context *smu_table = &smu->smu_table;
		struct smu_table *dummy_read_1_table =
		&smu_table->dummy_read_1_table;


		amdgpu_bo_free_kernel(&dummy_read_1_table->bo,
		&dummy_read_1_table->mc_address,
		&dummy_read_1_table->cpu_addr);

		memset(dummy_read_1_table, 0, sizeof(struct smu_table));
		}

		static int smu_smc_table_sw_init(struct smu_context *smu)
		{
		int ret;
		@@ -698,6 +737,10 @@ static int smu_smc_table_sw_init(struct smu_context *smu)
		if (ret)
		return ret;

		ret = smu_alloc_dummy_read_table(smu);
		if (ret)
		return ret;

		ret = smu_i2c_init(smu, &smu->adev->pm.smu_i2c);
		if (ret)
		return ret;
		@@ -711,6 +754,8 @@ static int smu_smc_table_sw_fini(struct smu_context *smu)

		smu_i2c_fini(smu, &smu->adev->pm.smu_i2c);

		smu_free_dummy_read_table(smu);

		ret = smu_free_memory_pool(smu);
		if (ret)
		return ret;

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