On Mon, Aug 21, 2023 at 2:55 AM Arvind Yadav <Arvind.Yadav@xxxxxxx> wrote:
>
> 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.
>
> 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 | 56 +++++++++++++++++++
> drivers/gpu/drm/amd/include/amdgpu_workload.h | 3 +
> 2 files changed, 59 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
> index 32166f482f77..e661cc5b3d92 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_workload.c
> @@ -24,6 +24,62 @@
>
> #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 */
> + adev->smu_workload.submit_workload_status |= (1 << profile);
> + atomic_inc(&adev->smu_workload.power_profile_ref[profile]);
> + }
> +
> + return ret;
> +}
> +
> +void amdgpu_workload_profile_set(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;
> +
> + if (profile == PP_SMC_POWER_PROFILE_BOOTUP_DEFAULT)
> + return;
Why is this one skipped? How do we get back to the boot up profile?
Alex
> +
> + mutex_lock(&workload->workload_lock);
> +
> + 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);
> + }
> +
> + 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 5d0f068422d4..5022f28fc2f9 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_set(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
>
