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| author | changzhu <Changfeng.Zhu@amd.com> | 2019-11-19 10:18:39 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-11-22 14:27:11 -0500 |
| commit | dab5ef2722cde781ff3f6b3542d673ed174359b8 (patch) | |
| tree | f95413f9c60a1b8db6daac65f294b593d9e1a792 /drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c | |
| parent | c348ad46b0e9503fb55ca84ea7427d736181223f (diff) | |
| download | linux-dab5ef2722cde781ff3f6b3542d673ed174359b8.tar.gz | |
drm/amdgpu: initialize vm_inv_eng0_sem for gfxhub and mmhub
SW must acquire/release one of the vm_invalidate_eng*_sem around the
invalidation req/ack. Through this way,it can avoid losing invalidate
acknowledge state across power-gating off cycle.
To use vm_invalidate_eng*_sem, it needs to initialize
vm_invalidate_eng*_sem firstly.
Signed-off-by: changzhu <Changfeng.Zhu@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/mmhub_v1_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c index d7575ac27038..adfd8a6171eb 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c @@ -416,6 +416,8 @@ void mmhub_v1_0_init(struct amdgpu_device *adev) hub->ctx0_ptb_addr_hi32 = SOC15_REG_OFFSET(MMHUB, 0, mmVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32); + hub->vm_inv_eng0_sem = + SOC15_REG_OFFSET(MMHUB, 0, mmVM_INVALIDATE_ENG0_SEM); hub->vm_inv_eng0_req = SOC15_REG_OFFSET(MMHUB, 0, mmVM_INVALIDATE_ENG0_REQ); hub->vm_inv_eng0_ack = |