From 50d1ebef79ef6d09f4fb91f0b424e4f87db1d8a8 Mon Sep 17 00:00:00 2001 From: Chunming Zhou Date: Mon, 1 Apr 2019 17:51:02 +0800 Subject: drm/syncobj: add timeline signal ioctl for syncobj v5 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit v2: individually allocate chain array, since chain node is free independently. v3: all existing points must be already signaled before cpu perform signal operation, so add check condition for that. v4: remove v3 change and add checking to prevent out-of-order v5: unify binary and timeline Signed-off-by: Chunming Zhou Signed-off-by: Christian König Cc: Tobias Hector Cc: Jason Ekstrand Cc: Dave Airlie Cc: Chris Wilson Reviewed-by: Lionel Landwerlin Link: https://patchwork.freedesktop.org/patch/295792/?series=58813&rev=1 --- drivers/gpu/drm/drm_syncobj.c | 73 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) (limited to 'drivers/gpu/drm/drm_syncobj.c') diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index 63d5d2bf35c2..f3ceeb504e6c 100644 --- a/drivers/gpu/drm/drm_syncobj.c +++ b/drivers/gpu/drm/drm_syncobj.c @@ -1184,6 +1184,79 @@ drm_syncobj_signal_ioctl(struct drm_device *dev, void *data, return ret; } +int +drm_syncobj_timeline_signal_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_private) +{ + struct drm_syncobj_timeline_array *args = data; + struct drm_syncobj **syncobjs; + struct dma_fence_chain **chains; + uint64_t *points; + uint32_t i, j; + int ret; + + if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ)) + return -EOPNOTSUPP; + + 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; + + points = kmalloc_array(args->count_handles, sizeof(*points), + GFP_KERNEL); + if (!points) { + ret = -ENOMEM; + goto out; + } + if (!u64_to_user_ptr(args->points)) { + memset(points, 0, args->count_handles * sizeof(uint64_t)); + } else if (copy_from_user(points, u64_to_user_ptr(args->points), + sizeof(uint64_t) * args->count_handles)) { + ret = -EFAULT; + goto err_points; + } + + chains = kmalloc_array(args->count_handles, sizeof(void *), GFP_KERNEL); + if (!chains) { + ret = -ENOMEM; + goto err_points; + } + for (i = 0; i < args->count_handles; i++) { + chains[i] = kzalloc(sizeof(struct dma_fence_chain), GFP_KERNEL); + if (!chains[i]) { + for (j = 0; j < i; j++) + kfree(chains[j]); + ret = -ENOMEM; + goto err_chains; + } + } + + for (i = 0; i < args->count_handles; i++) { + struct dma_fence *fence = dma_fence_get_stub(); + + drm_syncobj_add_point(syncobjs[i], chains[i], + fence, points[i]); + dma_fence_put(fence); + } +err_chains: + kfree(chains); +err_points: + kfree(points); +out: + drm_syncobj_array_free(syncobjs, args->count_handles); + + return ret; +} + int drm_syncobj_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file_private) { -- cgit v1.2.3