Commit 40748f9a authored by Lang Yu's avatar Lang Yu Committed by Alex Deucher
Browse files

drm/amdgpu: reserve mmhub engine 3 for UMSCH FW 



UMSCH FW uses mmhub engine 3 for invalidation.

Signed-off-by: default avatarLang Yu <Lang.Yu@amd.com>
Acked-by: default avatarLeo Liu <leo.liu@amd.com>
Acked-by: default avatarVeerabadhran Gopalakrishnan <Veerabadhran.Gopalakrishnan@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d591ae0c

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

+5 −1
Original line number Diff line number Diff line
@@ -549,13 +549,17 @@ int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev) 
		/* reserve engine 5 for firmware */

		if (adev->enable_mes)

			vm_inv_engs[i] &= ~(1 << 5);

		/* reserve mmhub engine 3 for firmware */

		if (adev->enable_umsch_mm)

			vm_inv_engs[i] &= ~(1 << 3);

	}



	for (i = 0; i < adev->num_rings; ++i) {

		ring = adev->rings[i];

		vmhub = ring->vm_hub;



		if (ring == &adev->mes.ring)

		if (ring == &adev->mes.ring ||

		    ring == &adev->umsch_mm.ring)

			continue;



		inv_eng = ffs(vm_inv_engs[vmhub]);