diff options
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_fence.c')
-rw-r--r-- | drivers/gpu/drm/qxl/qxl_fence.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_fence.c b/drivers/gpu/drm/qxl/qxl_fence.c deleted file mode 100644 index ae59e91cfb9a..000000000000 --- a/drivers/gpu/drm/qxl/qxl_fence.c +++ /dev/null @@ -1,91 +0,0 @@ -/* - * Copyright 2013 Red Hat Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - * OTHER DEALINGS IN THE SOFTWARE. - * - * Authors: Dave Airlie - * Alon Levy - */ - - -#include "qxl_drv.h" - -/* QXL fencing- - - When we submit operations to the GPU we pass a release reference to the GPU - with them, the release reference is then added to the release ring when - the GPU is finished with that particular operation and has removed it from - its tree. - - So we have can have multiple outstanding non linear fences per object. - - From a TTM POV we only care if the object has any outstanding releases on - it. - - we wait until all outstanding releases are processeed. - - sync object is just a list of release ids that represent that fence on - that buffer. - - we just add new releases onto the sync object attached to the object. - - This currently uses a radix tree to store the list of release ids. - - For some reason every so often qxl hw fails to release, things go wrong. -*/ -/* must be called with the fence lock held */ -void qxl_fence_add_release_locked(struct qxl_fence *qfence, uint32_t rel_id) -{ - radix_tree_insert(&qfence->tree, rel_id, qfence); - qfence->num_active_releases++; -} - -int qxl_fence_remove_release(struct qxl_fence *qfence, uint32_t rel_id) -{ - void *ret; - int retval = 0; - struct qxl_bo *bo = container_of(qfence, struct qxl_bo, fence); - - spin_lock(&bo->tbo.bdev->fence_lock); - - ret = radix_tree_delete(&qfence->tree, rel_id); - if (ret == qfence) - qfence->num_active_releases--; - else { - DRM_DEBUG("didn't find fence in radix tree for %d\n", rel_id); - retval = -ENOENT; - } - spin_unlock(&bo->tbo.bdev->fence_lock); - return retval; -} - - -int qxl_fence_init(struct qxl_device *qdev, struct qxl_fence *qfence) -{ - qfence->qdev = qdev; - qfence->num_active_releases = 0; - INIT_RADIX_TREE(&qfence->tree, GFP_ATOMIC); - return 0; -} - -void qxl_fence_fini(struct qxl_fence *qfence) -{ - kfree(qfence->release_ids); - qfence->num_active_releases = 0; -} |