diff options
| author | shaoyunl <shaoyun.liu@amd.com> | 2019-03-20 16:14:56 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-03-27 22:40:43 -0500 |
| commit | df399b064118bf9a5b9a3faaa67feb1cbb34e9d4 (patch) | |
| tree | ffd8647d3ca96106447b562eebcf1f3c89cb6a3c /drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | |
| parent | adc7e863f68466aa63861242449c2c0fd57d60ab (diff) | |
drm/amdgpu: XGMI pstate switch initial support
Driver vote low to high pstate switch whenever there is an outstanding
XGMI mapping request. Driver vote high to low pstate when all the
outstanding XGMI mapping is terminated.
Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c index fcc4b05c745c..336834797af3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c @@ -200,12 +200,26 @@ struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev, int lo if (lock) mutex_lock(&tmp->hive_lock); - + tmp->pstate = -1; mutex_unlock(&xgmi_mutex); return tmp; } +int amdgpu_xgmi_set_pstate(struct amdgpu_device *adev, int pstate) +{ + int ret = 0; + struct amdgpu_hive_info *hive = amdgpu_get_xgmi_hive(adev, 0); + + if (!hive) + return 0; + + if (hive->pstate == pstate) + return 0; + /* Todo : sent the message to SMU for pstate change */ + return ret; +} + int amdgpu_xgmi_update_topology(struct amdgpu_hive_info *hive, struct amdgpu_device *adev) { int ret = -EINVAL; |