UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Graham Sider 2023-02-08 11:10:57 -05:00 committed by Alex Deucher
parent f915f3af99
commit 2e8cc5d317
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
View File

@ -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);