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drm/amd/pm: allocate a new buffer for pstate dummy reading
This dummy reading buffer will be used for the new Navi1x UMC CDR workaround. 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>
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3646c00e74
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2 changed files with 46 additions and 0 deletions
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@ -270,6 +270,7 @@ struct smu_table_context
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*/
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struct smu_table driver_table;
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struct smu_table memory_pool;
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struct smu_table dummy_read_1_table;
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uint8_t thermal_controller_type;
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void *overdrive_table;
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@ -663,6 +663,45 @@ static int smu_free_memory_pool(struct smu_context *smu)
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return 0;
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}
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static int smu_alloc_dummy_read_table(struct smu_context *smu)
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{
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struct smu_table_context *smu_table = &smu->smu_table;
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struct smu_table *dummy_read_1_table =
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&smu_table->dummy_read_1_table;
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struct amdgpu_device *adev = smu->adev;
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int ret = 0;
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dummy_read_1_table->size = 0x40000;
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dummy_read_1_table->align = PAGE_SIZE;
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dummy_read_1_table->domain = AMDGPU_GEM_DOMAIN_VRAM;
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ret = amdgpu_bo_create_kernel(adev,
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dummy_read_1_table->size,
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dummy_read_1_table->align,
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dummy_read_1_table->domain,
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&dummy_read_1_table->bo,
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&dummy_read_1_table->mc_address,
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&dummy_read_1_table->cpu_addr);
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if (ret)
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dev_err(adev->dev, "VRAM allocation for dummy read table failed!\n");
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return ret;
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}
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static void smu_free_dummy_read_table(struct smu_context *smu)
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{
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struct smu_table_context *smu_table = &smu->smu_table;
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struct smu_table *dummy_read_1_table =
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&smu_table->dummy_read_1_table;
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amdgpu_bo_free_kernel(&dummy_read_1_table->bo,
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&dummy_read_1_table->mc_address,
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&dummy_read_1_table->cpu_addr);
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memset(dummy_read_1_table, 0, sizeof(struct smu_table));
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}
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static int smu_smc_table_sw_init(struct smu_context *smu)
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{
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int ret;
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@ -698,6 +737,10 @@ static int smu_smc_table_sw_init(struct smu_context *smu)
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if (ret)
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return ret;
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ret = smu_alloc_dummy_read_table(smu);
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if (ret)
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return ret;
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ret = smu_i2c_init(smu, &smu->adev->pm.smu_i2c);
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if (ret)
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return ret;
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@ -711,6 +754,8 @@ static int smu_smc_table_sw_fini(struct smu_context *smu)
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smu_i2c_fini(smu, &smu->adev->pm.smu_i2c);
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smu_free_dummy_read_table(smu);
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ret = smu_free_memory_pool(smu);
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if (ret)
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return ret;
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