From: Jack Xiao Date: Wed, 16 Nov 2022 08:44:21 +0000 (+0800) Subject: drm/amd/amdgpu: reserve vm invalidation engine for firmware X-Git-Tag: io_uring-6.2-2022-12-19~36^2~6^2~42 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=a2b1df9296da6dd71bd1fe96d2df5509e13c372c;p=linux-block.git drm/amd/amdgpu: reserve vm invalidation engine for firmware If mes enabled, reserve VM invalidation engine 5 for firmware. Signed-off-by: Jack Xiao Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gmc.c index 4365ede42855..e970e3760cec 100644 --- 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(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;