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drm/amdgpu: skip "Issue additional private vm invalidation to MMHUB" on SRIOV

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[Why]
vm_l2_bank_select_reserved_cid2 is a PF_only register
that cannot be programmed by VF. This feature is only
support HDP using GPUVM page tables to access FB memory
which should be disabled on SRIOV.

[How]
Disable the feature on VF.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Yifan Zha <Yifan.Zha@amd.com>
Signed-off-by: Horace Chen <horace.chen@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yifan Zha
2022-08-01 11:11:20 +08:00
committed by Alex Deucher
parent c1026c6f31
commit 5818eae501
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c
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@@ -234,7 +234,8 @@ static void gmc_v11_0_flush_vm_hub(struct amdgpu_device *adev, uint32_t vmid,
/* Issue additional private vm invalidation to MMHUB */
if ((vmhub != AMDGPU_GFXHUB_0) &&
(hub->vm_l2_bank_select_reserved_cid2)) {
(hub->vm_l2_bank_select_reserved_cid2) &&
!amdgpu_sriov_vf(adev)) {
inv_req = RREG32_NO_KIQ(hub->vm_l2_bank_select_reserved_cid2);
/* bit 25: RSERVED_CACHE_PRIVATE_INVALIDATION */
inv_req |= (1 << 25);