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drm/amdgpu/virt: add wait_reset virt ops

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Driver can use this interface to check if there's a function level
reset done in hypervisor. It's helpful when IRQ handler for reset
is not ready, or special handling is required.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: pding <Pixel.Ding@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
pding 2017-10-24 09:51:04 +08:00 • committed by Alex Deucher
parent a16f8f11c5
commit b636176efd
2 changed files with 18 additions and 0 deletions
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16
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
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@ -235,6 +235,22 @@ int amdgpu_virt_reset_gpu(struct amdgpu_device *adev)
return 0;
}
/**
* amdgpu_virt_wait_reset() - wait for reset gpu completed
* @amdgpu: amdgpu device.
* Wait for GPU reset completed.
* Return: Zero if reset success, otherwise will return error.
*/
int amdgpu_virt_wait_reset(struct amdgpu_device *adev)
{
struct amdgpu_virt *virt = &adev->virt;
if (!virt->ops || !virt->ops->wait_reset)
return -EINVAL;
return virt->ops->wait_reset(adev);
}
/**
* amdgpu_virt_alloc_mm_table() - alloc memory for mm table
* @amdgpu: amdgpu device.