From: Jack Xiao <Jack.Xiao@xxxxxxx>
commit 91abf28a636291135ea5cab9af40f017cff6afce upstream.
If mes enabled, reserve VM invalidation engine 5 for firmware.
Signed-off-by: Jack Xiao <Jack.Xiao@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # 6.0.x
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
@@ -479,6 +479,12 @@ int amdgpu_gmc_allocate_vm_inv_eng(struc
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;
