Commit 91abf28a authored by Jack Xiao's avatar Jack Xiao Committed by Alex Deucher
Browse files

drm/amd/amdgpu: reserve vm invalidation engine for firmware 



If mes enabled, reserve VM invalidation engine 5 for firmware.

Signed-off-by: default avatarJack Xiao <Jack.Xiao@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0.x
parent b9ab82da

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

+6 −0
Original line number Diff line number Diff line
@@ -479,6 +479,12 @@ int amdgpu_gmc_allocate_vm_inv_eng(struct amdgpu_device *adev) 
	unsigned i;

	unsigned vmhub, inv_eng;



	if (adev->enable_mes) {

		/* reserve engine 5 for firmware */

		for (vmhub = 0; vmhub < AMDGPU_MAX_VMHUBS; vmhub++)

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

	}



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

		ring = adev->rings[i];

		vmhub = ring->funcs->vmhub;