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drm/amd/pm: allocate a new buffer for pstate dummy reading

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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>
This commit is contained in:
Evan Quan 2020-08-26 16:10:29 +08:00 committed by Alex Deucher
parent 3646c00e74
commit 2379be2faf
2 changed files with 46 additions and 0 deletions
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1
drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
View file

@ -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;

45
drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
View file

@ -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;