diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 45 |
1 files changed, 40 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c index 5c9918d..a7189a1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c @@ -136,6 +136,38 @@ int amdgpu_fence_emit(struct amdgpu_ring *ring, void *owner, } /** + * amdgpu_fence_recreate - recreate a fence from an user fence + * + * @ring: ring the fence is associated with + * @owner: creator of the fence + * @seq: user fence sequence number + * @fence: resulting amdgpu fence object + * + * Recreates a fence command from the user fence sequence number (all asics). + * Returns 0 on success, -ENOMEM on failure. + */ +int amdgpu_fence_recreate(struct amdgpu_ring *ring, void *owner, + uint64_t seq, struct amdgpu_fence **fence) +{ + struct amdgpu_device *adev = ring->adev; + + if (seq > ring->fence_drv.sync_seq[ring->idx]) + return -EINVAL; + + *fence = kmalloc(sizeof(struct amdgpu_fence), GFP_KERNEL); + if ((*fence) == NULL) + return -ENOMEM; + + (*fence)->seq = seq; + (*fence)->ring = ring; + (*fence)->owner = owner; + fence_init(&(*fence)->base, &amdgpu_fence_ops, + &adev->fence_queue.lock, adev->fence_context + ring->idx, + (*fence)->seq); + return 0; +} + +/** * amdgpu_fence_check_signaled - callback from fence_queue * * this function is called with fence_queue lock held, which is also used @@ -517,12 +549,14 @@ static bool amdgpu_fence_any_seq_signaled(struct amdgpu_device *adev, u64 *seq) * the wait timeout, or an error for all other cases. * -EDEADLK is returned when a GPU lockup has been detected. */ -long amdgpu_fence_wait_seq_timeout(struct amdgpu_device *adev, u64 *target_seq, - bool intr, long timeout) +static long amdgpu_fence_wait_seq_timeout(struct amdgpu_device *adev, + u64 *target_seq, bool intr, + long timeout) { uint64_t last_seq[AMDGPU_MAX_RINGS]; bool signaled; - int i, r; + int i; + long r; if (timeout == 0) { return amdgpu_fence_any_seq_signaled(adev, target_seq); @@ -1023,7 +1057,7 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data) amdgpu_fence_process(ring); - seq_printf(m, "--- ring %d ---\n", i); + seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name); seq_printf(m, "Last signaled fence 0x%016llx\n", (unsigned long long)atomic64_read(&ring->fence_drv.last_seq)); seq_printf(m, "Last emitted 0x%016llx\n", @@ -1031,7 +1065,8 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data) for (j = 0; j < AMDGPU_MAX_RINGS; ++j) { struct amdgpu_ring *other = adev->rings[j]; - if (i != j && other && other->fence_drv.initialized) + if (i != j && other && other->fence_drv.initialized && + ring->fence_drv.sync_seq[j]) seq_printf(m, "Last sync to ring %d 0x%016llx\n", j, ring->fence_drv.sync_seq[j]); } |