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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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6
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
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@@ -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 */