diff options
author | Chunming Zhou <david1.zhou@amd.com> | 2019-04-01 17:50:58 +0800 |
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committer | Christian König <christian.koenig@amd.com> | 2019-04-01 12:06:38 +0200 |
commit | 27b575a9aa2ff0358c5f4410a14f6413d5c792e4 (patch) | |
tree | 7046252eaffdb80f6f9005c3909254ccd1c1afd1 /drivers/gpu/drm/drm_syncobj.c | |
parent | 01d6c357837918d8186b9f520e167d98e3d560cc (diff) | |
download | linux-27b575a9aa2ff0358c5f4410a14f6413d5c792e4.tar.bz2 |
drm/syncobj: add timeline payload query ioctl v6
user mode can query timeline payload.
v2: check return value of copy_to_user
v3: handle querying entry by entry
v4: rebase on new chain container, simplify interface
v5: query last signaled timeline point, not last point.
v6: add unorder point check
Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: Tobias Hector <Tobias.Hector@amd.com>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/295784/?series=58813&rev=1
Diffstat (limited to 'drivers/gpu/drm/drm_syncobj.c')
-rw-r--r-- | drivers/gpu/drm/drm_syncobj.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index b1262e92011c..3a1be7f79de1 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -1065,3 +1065,65 @@ drm_syncobj_signal_ioctl(struct drm_device *dev, void *data, return ret; } + +int drm_syncobj_query_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_private) +{ + struct drm_syncobj_timeline_array *args = data; + struct drm_syncobj **syncobjs; + uint64_t __user *points = u64_to_user_ptr(args->points); + uint32_t i; + int ret; + + if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) + return -ENODEV; + + if (args->pad != 0) + return -EINVAL; + + if (args->count_handles == 0) + return -EINVAL; + + ret = drm_syncobj_array_find(file_private, + u64_to_user_ptr(args->handles), + args->count_handles, + &syncobjs); + if (ret < 0) + return ret; + + for (i = 0; i < args->count_handles; i++) { + struct dma_fence_chain *chain; + struct dma_fence *fence; + uint64_t point; + + fence = drm_syncobj_fence_get(syncobjs[i]); + chain = to_dma_fence_chain(fence); + if (chain) { + struct dma_fence *iter, *last_signaled = NULL; + + dma_fence_chain_for_each(iter, fence) { + if (!iter) + break; + dma_fence_put(last_signaled); + last_signaled = dma_fence_get(iter); + if (!to_dma_fence_chain(last_signaled)->prev_seqno) + /* It is most likely that timeline has + * unorder points. */ + break; + } + point = dma_fence_is_signaled(last_signaled) ? + last_signaled->seqno : + to_dma_fence_chain(last_signaled)->prev_seqno; + dma_fence_put(last_signaled); + } else { + point = 0; + } + ret = copy_to_user(&points[i], &point, sizeof(uint64_t)); + ret = ret ? -EFAULT : 0; + if (ret) + break; + } + drm_syncobj_array_free(syncobjs, args->count_handles); + + return ret; +} |