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

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

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jack Xiao 2022-11-16 16:44:21 +08:00 committed by Alex Deucher
parent d0c2dd737b
commit a2b1df9296
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c
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@ -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;