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path: root/drivers/gpu/nvgpu/gk20a/fence_gk20a.c
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* host: move nvhost to its own git repoAlex Van Brunt2016-04-07
| | | | | | | | | | | | | | | | | | Move nvhost out of the common Linux repo and into its own git repo. By doing this, the same nvhost driver can work on different Linux kernel versions. Previously android/sync.h was referenced relative to kernel/drivers/video/tegra/host. However, host moved to a completely different part of the tree. Instead, reference it relative to kernel/include. bug 1749413 Change-Id: Ic7f94093c712e5b64c9b3b660d6fce5d18e59bc0 Signed-off-by: Alex Van Brunt <avanbrunt@nvidia.com> Reviewed-on: http://git-master/r/1120544 Reviewed-by: Arto Merilainen <amerilainen@nvidia.com> Tested-by: Arto Merilainen <amerilainen@nvidia.com>
* gpu: nvgpu: Fix semaphore race conditionAlex Waterman2016-01-27
| | | | | | | | | | | | | | | | | | | | | | A race condition existed in gk20a_channel_semaphore_wait_fd(). In some instances the semaphore underlying the sync_fence being waited on would have already signaled. This would cause the subsequent sync_fence_wait_async() call to return 1 and do nothing. Normally, the sync_fence_wait_async() call would release the newly created semaphore but in the above case that would not happen and hang any channel waiting on that semaphore. To fix this problem if sync_fence_wait_async() returns 1 immediately release the newly created semaphore. Bug 1604892 Change-Id: I1f5e811695bb099f71b7762835aba4a7e27362ec Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/935910 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: fix possible NULL dereferenceDeepak Nibade2015-12-14
| | | | | | | | | | | | | Coverity id : 20260 Bug 1416640 Change-Id: I6ca8df2ed001df99ad46e476b1fe4de9f1346786 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/922362 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Sachin Nikam <snikam@nvidia.com>
* gpu: nvgpu: create sync_fence only if neededDeepak Nibade2015-12-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, we create sync_fence (from nvhost_sync_create_fence()) for every submit But not all submits request for a sync_fence. Also, nvhost_sync_create_fence() API takes about 1/3rd of the total submit path. Hence to optimize, we can allocate sync_fence only when user explicitly asks for it using (NVGPU_SUBMIT_GPFIFO_FLAGS_FENCE_GET && NVGPU_SUBMIT_GPFIFO_FLAGS_SYNC_FENCE) Also, in CDE path from gk20a_prepare_compressible_read(), we reuse existing fence stored in "state" and that can result into not returning sync_fence_fd when user asked for it Hence, force allocation of sync_fence when job submission comes from CDE path Bug 200141116 Change-Id: Ia921701bf0e2432d6b8a5e8b7d91160e7f52db1e Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/812845 (cherry picked from commit 5fd47015eeed00352cc8473eff969a66c94fee98) Reviewed-on: http://git-master/r/837662 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Sachin Nikam <snikam@nvidia.com>
* gpu: nvgpu: Handling null pointerGagan Grover2015-09-29
| | | | | | | | | | | | | | | Handling null pointer in gk20a_fence_is_expired. Bug 200117724 Change-Id: I0f9307a5f8b82bf990b6ddaea1a408d4f3f376fb Signed-off-by: Gagan Grover <ggrover@nvidia.com> Reviewed-on: http://git-master/r/777796 (cherry picked from commit dbf5bae53e0e7862754faba78eab84284786ecb3) Reviewed-on: http://git-master/r/795356 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
* gpu: nvgpu: Infinite syncpt wait on presiliconTerje Bergstrom2015-04-04
| | | | | | | | | On presilicon, syncpt waits should have infinite timeout. Change-Id: Ifa9b2fa0ef164e2f87a631bca77941e995b06ad4 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/717947 Reviewed-by: Kirill Artamonov <kartamonov@nvidia.com>
* gpu: nvgpu: Use long for timeout in semaphoresTerje Bergstrom2015-03-18
| | | | | | | | | | | | Semaphore fences use int for timeout. It should be long instead. Bug 1567274 Change-Id: Ia2b2c5ceeb03b4d09c1d8933ce33310356dd7e01 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/595980 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: rename gpu ioctls and structs to nvgpuKonsta Holtta2015-03-18
| | | | | | | | | | | | | | To help remove the nvhost dependency from nvgpu, rename ioctl defines and structures used by nvgpu such that nvhost is replaced by nvgpu. Duplicate some structures as needed. Update header guards and such accordingly. Change-Id: Ifc3a867713072bae70256502735583ab38381877 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/542620 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: fix fence creation error checkKonsta Holtta2015-03-18
| | | | | | | | | | | | nvhost_sync_create_fence returns ERR_PTRs instead of NULLs on error; check for its errors with IS_ERR. Change-Id: I9752e0d8fa703b2872918b23721ae973be58bf35 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/533794 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Arto Merilainen <amerilainen@nvidia.com>
* gpu: nvgpu: Fix semaphore refcountingArto Merilainen2015-03-18
| | | | | | | | | | This patch fixes a refcounting issue in semaphore handling. Change-Id: I03327c60ed6923a90663f0b845566e81af4b94d4 Signed-off-by: Arto Merilainen <amerilainen@nvidia.com> Reviewed-on: http://git-master/r/453056 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Add gk20a_fence typeLauri Peltonen2015-03-18
When moving compression state tracking and compbit management ops to kernel, we need to attach a fence to dma-buf metadata, along with the compbit state. To make in-kernel fence management easier, introduce a new gk20a_fence abstraction. A gk20a_fence may be backed by a semaphore or a syncpoint (id, value) pair. If the kernel is configured with CONFIG_SYNC, it will also contain a sync_fence. The gk20a_fence can easily be converted back to a syncpoint (id, value) parir or sync FD when we need to return it to user space. Change gk20a_submit_channel_gpfifo to return a gk20a_fence instead of nvhost_fence. This is to facilitate work submission initiated from kernel. Bug 1509620 Change-Id: I6154764a279dba83f5e91ba9e0cb5e227ca08e1b Signed-off-by: Lauri Peltonen <lpeltonen@nvidia.com> Reviewed-on: http://git-master/r/439846 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
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