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drm/amdgpu: request/release full gpu access if device is vf

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For gpu vf device, first need to request full gpu access before
accessing gpu registers, and release full gpu access after the
access is done.

Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Xiangliang Yu 2017-01-12 15:14:36 +08:00 committed by Alex Deucher
parent ab71ac56f6
commit 3149d9da12
2 changed files with 15 additions and 1 deletions
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10
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
View File

@ -1345,6 +1345,12 @@ static int amdgpu_early_init(struct amdgpu_device *adev)
return -EINVAL;
}
if (amdgpu_sriov_vf(adev)) {
r = amdgpu_virt_request_full_gpu(adev, true);
if (r)
return r;
}
for (i = 0; i < adev->num_ip_blocks; i++) {
if ((amdgpu_ip_block_mask & (1 << i)) == 0) {
DRM_ERROR("disabled ip block: %d\n", i);
@ -1547,8 +1553,10 @@ static int amdgpu_fini(struct amdgpu_device *adev)
adev->ip_blocks[i].status.late_initialized = false;
}
if (amdgpu_sriov_vf(adev))
if (amdgpu_sriov_vf(adev)) {
amdgpu_bo_free_kernel(&adev->virt.csa_obj, &adev->virt.csa_vmid0_addr, NULL);
amdgpu_virt_release_full_gpu(adev, false);
}
return 0;
}

6
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
View File

@ -60,6 +60,9 @@ void amdgpu_driver_unload_kms(struct drm_device *dev)
if (adev->rmmio == NULL)
goto done_free;
if (amdgpu_sriov_vf(adev))
amdgpu_virt_request_full_gpu(adev, false);
if (amdgpu_device_is_px(dev)) {
pm_runtime_get_sync(dev->dev);
pm_runtime_forbid(dev->dev);
@ -138,6 +141,9 @@ int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags)
pm_runtime_put_autosuspend(dev->dev);
}
if (amdgpu_sriov_vf(adev))
amdgpu_virt_release_full_gpu(adev, true);
out:
if (r) {
/* balance pm_runtime_get_sync in amdgpu_driver_unload_kms */