diff options
| author | Christian König <christian.koenig@amd.com> | 2013-11-12 12:58:05 +0100 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-11-15 15:56:09 -0500 |
| commit | 1654b817d8f5f1c27ebc98773fe0e517b0ba2f1e (patch) | |
| tree | b12139b37c3d712973baabfd5f8142728e36ef2a /drivers/gpu/drm/radeon/radeon_fence.c | |
| parent | bd80c8ba995c1dbdddee14acc55c541c499e0442 (diff) | |
| download | linux-1654b817d8f5f1c27ebc98773fe0e517b0ba2f1e.tar.bz2 | |
drm/radeon: allow semaphore emission to fail
To workaround bugs and/or certain limits it's sometimes
useful to fall back to waiting on fences.
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_fence.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_fence.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c index 281d14c22a47..d3a86e43c012 100644 --- a/drivers/gpu/drm/radeon/radeon_fence.c +++ b/drivers/gpu/drm/radeon/radeon_fence.c @@ -472,6 +472,36 @@ int radeon_fence_wait_any(struct radeon_device *rdev, } /** + * radeon_fence_wait_locked - wait for a fence to signal + * + * @fence: radeon fence object + * + * Wait for the requested fence to signal (all asics). + * Returns 0 if the fence has passed, error for all other cases. + */ +int radeon_fence_wait_locked(struct radeon_fence *fence) +{ + uint64_t seq[RADEON_NUM_RINGS] = {}; + int r; + + if (fence == NULL) { + WARN(1, "Querying an invalid fence : %p !\n", fence); + return -EINVAL; + } + + seq[fence->ring] = fence->seq; + if (seq[fence->ring] == RADEON_FENCE_SIGNALED_SEQ) + return 0; + + r = radeon_fence_wait_seq(fence->rdev, seq, false, false); + if (r) + return r; + + fence->seq = RADEON_FENCE_SIGNALED_SEQ; + return 0; +} + +/** * radeon_fence_wait_next_locked - wait for the next fence to signal * * @rdev: radeon device pointer |