/**
* amdgpu_fence_driver_start_ring - make the fence driver
* ready for use on the requested ring.
*
* @ring: ring to start the fence driver on
* @irq_src: interrupt source to use for this ring
* @irq_type: interrupt type to use for this ring
*
* Make the fence driver ready for processing (all asics).
* Not all asics have all rings, so each asic will only
* start the fence driver on the rings it has.
* Returns 0 for success, errors for failure.
*/
int amdgpu_fence_driver_start_ring(struct amdgpu_ring *ring,
struct amdgpu_irq_src *irq_src,
unsigned irq_type)
{
struct amdgpu_device *adev = ring->adev;
uint64_t index;
if (ring != &adev->uvd.ring) {
ring->fence_drv.cpu_addr = &adev->wb.wb[ring->fence_offs];
ring->fence_drv.gpu_addr = adev->wb.gpu_addr + (ring->fence_offs * 4);
} else {
/* put fence directly behind firmware */
index = ALIGN(adev->uvd.fw->size, 8);
ring->fence_drv.cpu_addr = adev->uvd.cpu_addr + index;
ring->fence_drv.gpu_addr = adev->uvd.gpu_addr + index;
}
amdgpu_fence_write(ring, atomic_read(&ring->fence_drv.last_seq));
amdgpu_irq_get(adev, irq_src, irq_type);
ring->fence_drv.irq_src = irq_src;
ring->fence_drv.irq_type = irq_type;
ring->fence_drv.initialized = true;
dev_info(adev->dev, "fence driver on ring %d use gpu addr 0x%016llx, "
"cpu addr 0x%p\n", ring->idx,
ring->fence_drv.gpu_addr, ring->fence_drv.cpu_addr);
return 0;
}
/**
* amdgpu_fence_driver_force_completion - force all fence waiter to complete
*
* @adev: amdgpu device pointer
*
* In case of GPU reset failure make sure no process keep waiting on fence
* that will never complete.
*/
void amdgpu_fence_driver_force_completion(struct amdgpu_device *adev)
{
int i;
for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
struct amdgpu_ring *ring = adev->rings[i];
if (!ring || !ring->fence_drv.initialized)
continue;
amdgpu_fence_write(ring, ring->fence_drv.sync_seq);
}
}
void amdgpu_fence_driver_force_completion_ring(struct amdgpu_ring *ring)
{
if (ring)
amdgpu_fence_write(ring, ring->fence_drv.sync_seq);
}