diff options
| author | changzhu <Changfeng.Zhu@amd.com> | 2019-11-19 10:18:39 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-11-22 14:55:19 -0500 |
| commit | 6c2c8972374ac5c35078d36d7559f64c368f7b33 (patch) | |
| tree | 9e7c8e146dcc8da7a8431969611cdb151ea2267b /drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c | |
| parent | 1b34de7c3fef0c7ebb3d05acc1756bfb585279ca (diff) | |
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>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c index 945533634711..a7cb185d639a 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c @@ -348,6 +348,8 @@ void mmhub_v2_0_init(struct amdgpu_device *adev) hub->ctx0_ptb_addr_hi32 = SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_CONTEXT0_PAGE_TABLE_BASE_ADDR_HI32); + hub->vm_inv_eng0_sem = + SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_INVALIDATE_ENG0_SEM); hub->vm_inv_eng0_req = SOC15_REG_OFFSET(MMHUB, 0, mmMMVM_INVALIDATE_ENG0_REQ); hub->vm_inv_eng0_ack = |