diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_semaphore.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_semaphore.c | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_semaphore.c b/drivers/gpu/drm/radeon/radeon_semaphore.c index 930a08af900..c5b3d8ecece 100644 --- a/drivers/gpu/drm/radeon/radeon_semaphore.c +++ b/drivers/gpu/drm/radeon/radeon_semaphore.c @@ -39,7 +39,6 @@ static int radeon_semaphore_add_bo(struct radeon_device *rdev) uint32_t *cpu_ptr; int r, i; - bo = kmalloc(sizeof(struct radeon_semaphore_bo), GFP_KERNEL); if (bo == NULL) { return -ENOMEM; @@ -154,13 +153,17 @@ int radeon_semaphore_sync_rings(struct radeon_device *rdev, bool sync_to[RADEON_NUM_RINGS], int dst_ring) { - int i, r; + int i = 0, r; - for (i = 0; i < RADEON_NUM_RINGS; ++i) { - unsigned num_ops = i == dst_ring ? RADEON_NUM_RINGS : 1; + mutex_lock(&rdev->ring_lock); + r = radeon_ring_alloc(rdev, &rdev->ring[dst_ring], RADEON_NUM_RINGS * 8); + if (r) { + goto error; + } - /* don't lock unused rings */ - if (!sync_to[i] && i != dst_ring) + for (i = 0; i < RADEON_NUM_RINGS; ++i) { + /* no need to sync to our own or unused rings */ + if (!sync_to[i] || i == dst_ring) continue; /* prevent GPU deadlocks */ @@ -170,38 +173,31 @@ int radeon_semaphore_sync_rings(struct radeon_device *rdev, goto error; } - r = radeon_ring_lock(rdev, &rdev->ring[i], num_ops * 8); - if (r) + r = radeon_ring_alloc(rdev, &rdev->ring[i], 8); + if (r) { goto error; - } - - for (i = 0; i < RADEON_NUM_RINGS; ++i) { - /* no need to sync to our own or unused rings */ - if (!sync_to[i] || i == dst_ring) - continue; + } radeon_semaphore_emit_signal(rdev, i, semaphore); radeon_semaphore_emit_wait(rdev, dst_ring, semaphore); - } - for (i = 0; i < RADEON_NUM_RINGS; ++i) { - - /* don't unlock unused rings */ - if (!sync_to[i] && i != dst_ring) - continue; - - radeon_ring_unlock_commit(rdev, &rdev->ring[i]); + radeon_ring_commit(rdev, &rdev->ring[i]); } + radeon_ring_commit(rdev, &rdev->ring[dst_ring]); + mutex_unlock(&rdev->ring_lock); + return 0; error: /* unlock all locks taken so far */ for (--i; i >= 0; --i) { if (sync_to[i] || i == dst_ring) { - radeon_ring_unlock_undo(rdev, &rdev->ring[i]); + radeon_ring_undo(&rdev->ring[i]); } } + radeon_ring_undo(&rdev->ring[dst_ring]); + mutex_unlock(&rdev->ring_lock); return r; } |