Commit 5818eae5 authored by Yifan Zha's avatar Yifan Zha Committed by Alex Deucher
Browse files

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



[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: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarYifan Zha <Yifan.Zha@amd.com>
Signed-off-by: default avatarHorace Chen <horace.chen@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent c1026c6f

drivers/gpu/drm/amd/amdgpu/gmc_v11_0.c

+2 −1
Original line number Diff line number Diff line
@@ -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);