This patch adds a function which will change the GPU
power profile based on a submitted job. This can optimize
the power performance when the workload is on.
v2:
- Splitting workload_profile_set and workload_profile_put
into two separate patches.
- Addressed review comment.
v3:
- Adressed all the review comment.
- Changing the function name from *_set() to *_get().
- Now setting a power profile when refcount is zero.
Cc: Shashank Sharma <shashank.sharma@xxxxxxx>
Cc: Christian Koenig <christian.koenig@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Arvind Yadav <Arvind.Yadav@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c | 59 +++++++++++++++++++
drivers/gpu/drm/amd/include/amdgpu_workload.h | 3 +
2 files changed, 62 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
index 32166f482f77..67eacaac6c9b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
@@ -24,6 +24,65 @@
#include "amdgpu.h"
+static enum PP_SMC_POWER_PROFILE
+ring_to_power_profile(uint32_t ring_type)
+{
+ switch (ring_type) {
+ case AMDGPU_RING_TYPE_GFX:
+ return PP_SMC_POWER_PROFILE_FULLSCREEN3D;
+ case AMDGPU_RING_TYPE_COMPUTE:
+ return PP_SMC_POWER_PROFILE_COMPUTE;
+ case AMDGPU_RING_TYPE_UVD:
+ case AMDGPU_RING_TYPE_VCE:
+ case AMDGPU_RING_TYPE_UVD_ENC:
+ case AMDGPU_RING_TYPE_VCN_DEC:
+ case AMDGPU_RING_TYPE_VCN_ENC:
+ case AMDGPU_RING_TYPE_VCN_JPEG:
+ return PP_SMC_POWER_PROFILE_VIDEO;
+ default:
+ return PP_SMC_POWER_PROFILE_BOOTUP_DEFAULT;
+ }
+}
+
+static int
+amdgpu_power_profile_set(struct amdgpu_device *adev,
+ enum PP_SMC_POWER_PROFILE profile)
+{
+ int ret = amdgpu_dpm_switch_power_profile(adev, profile, true);
+
+ if (!ret) {
+ /* Set the bit for the submitted workload profile */
+ set_bit(profile, &adev->smu_workload.submit_workload_status);
+ }
+
+ return ret;
+}
+
+void amdgpu_workload_profile_get(struct amdgpu_device *adev,
+ uint32_t ring_type)
+{
+ struct amdgpu_smu_workload *workload = &adev->smu_workload;
+ enum PP_SMC_POWER_PROFILE profile = ring_to_power_profile(ring_type);
+ int ret, refcount;
+
+ if (profile == PP_SMC_POWER_PROFILE_BOOTUP_DEFAULT)
+ return;
+
+ mutex_lock(&workload->workload_lock);
+
+ refcount = atomic_read(&workload->power_profile_ref[profile]);
+ if (!refcount) {
+ ret = amdgpu_power_profile_set(adev, profile);
+ if (ret) {
+ DRM_WARN("Failed to set workload profile to %s, error = %d\n",
+ amdgpu_workload_mode_name[profile], ret);
+ }
+ }
+
+ atomic_inc(&adev->smu_workload.power_profile_ref[profile]);
+ mutex_unlock(&workload->workload_lock);
+}
+
void amdgpu_workload_profile_init(struct amdgpu_device *adev)
{
adev->smu_workload.adev = adev;
diff --git a/drivers/gpu/drm/amd/include/amdgpu_workload.h b/drivers/gpu/drm/amd/include/amdgpu_workload.h
index dc12448764a3..5fc0bc2a74a4 100644
--- a/drivers/gpu/drm/amd/include/amdgpu_workload.h
+++ b/drivers/gpu/drm/amd/include/amdgpu_workload.h
@@ -46,6 +46,9 @@ static const char * const amdgpu_workload_mode_name[] = {
"Window3D"
};
+void amdgpu_workload_profile_get(struct amdgpu_device *adev,
+ uint32_t ring_type);
+
void amdgpu_workload_profile_init(struct amdgpu_device *adev);
void amdgpu_workload_profile_fini(struct amdgpu_device *adev);
--
2.34.1
