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drm/amdgpu: XGMI pstate switch initial support

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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: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
shaoyunl
2019-02-21 16:30:25 -05:00
committed by Alex Deucher
parent a690aa0f45
commit 9b638f9751
6 changed files with 53 additions and 1 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -925,6 +925,10 @@ struct amdgpu_device {
int asic_reset_res;
struct work_struct xgmi_reset_work;
/* counter of mapped memory through xgmi */
atomic_t xgmi_map_counter;
};
static inline struct amdgpu_device *amdgpu_ttm_adev(struct ttm_bo_device *bdev)