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| author | Aaron Liu <aaron.liu@amd.com> | 2022-02-07 05:23:36 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-02-08 02:01:16 +0300 |
| commit | 29ba7b16b907a1f915aab8b83ef901e209146938 (patch) | |
| tree | 3407a1b2f04b142e7722649a57ab782323107bf6 /drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | |
| parent | 6d53b115be012c282feb8c01a85a14ade99dbaab (diff) | |
| download | linux-29ba7b16b907a1f915aab8b83ef901e209146938.tar.xz | |
drm/amdgpu: check the GART table before invalidating TLB
Bypass group programming (utcl2_harvest) aims to forbid UTCL2 to send
invalidation command to harvested SE/SA. Once invalidation command comes
into harvested SE/SA, SE/SA has no response and system hang.
This patch is to add checking if the GART table is already allocated before
invalidating TLB. The new procedure is as following:
1. Calling amdgpu_gtt_mgr_init() in amdgpu_ttm_init(). After this step GTT
BOs can be allocated, but GART mappings are still ignored.
2. Calling amdgpu_gart_table_vram_alloc() from the GMC code. This allocates
the GART backing store.
3. Initializing the hardware, and programming the backing store into VMID0
for all VMHUBs.
4. Calling amdgpu_gtt_mgr_recover() to make sure the table is updated with
the GTT allocations done before it was allocated.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Acked-by: Huang Rui <ray.huang@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/amdgpu_gart.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c index 91d8207336c1..01cb89ffbd56 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c @@ -259,6 +259,9 @@ void amdgpu_gart_invalidate_tlb(struct amdgpu_device *adev) { int i; + if (!adev->gart.ptr) + return; + mb(); amdgpu_device_flush_hdp(adev, NULL); for (i = 0; i < adev->num_vmhubs; i++) |