diff options
| author | Graham Sider <Graham.Sider@amd.com> | 2023-02-08 19:10:57 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-06-09 16:58:58 +0300 |
| commit | 2e8cc5d317d12f7fb4f66361a3ce5427f0abe2cd (patch) | |
| tree | e266840cff40bf8a015a894a4314f077d14612eb /drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | |
| parent | f915f3af9984464c308787102990d85d4e988d2c (diff) | |
| download | linux-2e8cc5d317d12f7fb4f66361a3ce5427f0abe2cd.tar.xz | |
drm/amdgpu: Use legacy TLB flush for gfx943
Invalidate TLBs via a legacy flush request (flush_type=0) prior to the
heavyweight flush requests (flush_type=2) in gmc_v9_0.c. This is
temporarily required to mitigate a bug causing CPC UTCL1 to return stale
translations after invalidation requests in address range mode.
v2: squash in long term fix "drm/amdgpu: disable extra gfx943 legacy flush on rev1+"
Signed-off-by: Graham Sider <Graham.Sider@amd.com>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 95c3253e240a..2eb67b53e497 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -833,6 +833,11 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid, */ inv_req = gmc_v9_0_get_invalidate_req(vmid, 2); inv_req2 = gmc_v9_0_get_invalidate_req(vmid, flush_type); + } else if (flush_type == 2 && + adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 3) && + adev->rev_id == 0) { + inv_req = gmc_v9_0_get_invalidate_req(vmid, 0); + inv_req2 = gmc_v9_0_get_invalidate_req(vmid, flush_type); } else { inv_req = gmc_v9_0_get_invalidate_req(vmid, flush_type); inv_req2 = 0; @@ -976,6 +981,13 @@ static int gmc_v9_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev, if (vega20_xgmi_wa) kiq->pmf->kiq_invalidate_tlbs(ring, pasid, 2, all_hub); + + if (flush_type == 2 && + adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 3) && + adev->rev_id == 0) + kiq->pmf->kiq_invalidate_tlbs(ring, + pasid, 0, all_hub); + kiq->pmf->kiq_invalidate_tlbs(ring, pasid, flush_type, all_hub); r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT); |