diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_fence.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_fence.c | 49 |
1 files changed, 33 insertions, 16 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c index 410a975a8ee..34356252567 100644 --- a/drivers/gpu/drm/radeon/radeon_fence.c +++ b/drivers/gpu/drm/radeon/radeon_fence.c @@ -609,26 +609,20 @@ int radeon_fence_wait_next_locked(struct radeon_device *rdev, int ring) * Returns 0 if the fences have passed, error for all other cases. * Caller must hold ring lock. */ -void radeon_fence_wait_empty_locked(struct radeon_device *rdev, int ring) +int radeon_fence_wait_empty_locked(struct radeon_device *rdev, int ring) { uint64_t seq = rdev->fence_drv[ring].sync_seq[ring]; + int r; - while(1) { - int r; - r = radeon_fence_wait_seq(rdev, seq, ring, false, false); + r = radeon_fence_wait_seq(rdev, seq, ring, false, false); + if (r) { if (r == -EDEADLK) { - mutex_unlock(&rdev->ring_lock); - r = radeon_gpu_reset(rdev); - mutex_lock(&rdev->ring_lock); - if (!r) - continue; - } - if (r) { - dev_err(rdev->dev, "error waiting for ring to become" - " idle (%d)\n", r); + return -EDEADLK; } - return; + dev_err(rdev->dev, "error waiting for ring[%d] to become idle (%d)\n", + ring, r); } + return 0; } /** @@ -854,13 +848,17 @@ int radeon_fence_driver_init(struct radeon_device *rdev) */ void radeon_fence_driver_fini(struct radeon_device *rdev) { - int ring; + int ring, r; mutex_lock(&rdev->ring_lock); for (ring = 0; ring < RADEON_NUM_RINGS; ring++) { if (!rdev->fence_drv[ring].initialized) continue; - radeon_fence_wait_empty_locked(rdev, ring); + r = radeon_fence_wait_empty_locked(rdev, ring); + if (r) { + /* no need to trigger GPU reset as we are unloading */ + radeon_fence_driver_force_completion(rdev); + } wake_up_all(&rdev->fence_queue); radeon_scratch_free(rdev, rdev->fence_drv[ring].scratch_reg); rdev->fence_drv[ring].initialized = false; @@ -868,6 +866,25 @@ void radeon_fence_driver_fini(struct radeon_device *rdev) mutex_unlock(&rdev->ring_lock); } +/** + * radeon_fence_driver_force_completion - force all fence waiter to complete + * + * @rdev: radeon device pointer + * + * In case of GPU reset failure make sure no process keep waiting on fence + * that will never complete. + */ +void radeon_fence_driver_force_completion(struct radeon_device *rdev) +{ + int ring; + + for (ring = 0; ring < RADEON_NUM_RINGS; ring++) { + if (!rdev->fence_drv[ring].initialized) + continue; + radeon_fence_write(rdev, rdev->fence_drv[ring].sync_seq[ring], ring); + } +} + /* * Fence debugfs |