^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright © 2017 Red Hat
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Permission is hereby granted, free of charge, to any person obtaining a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * copy of this software and associated documentation files (the "Software"),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * to deal in the Software without restriction, including without limitation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * the rights to use, copy, modify, merge, publish, distribute, sublicense,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * and/or sell copies of the Software, and to permit persons to whom the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Software is furnished to do so, subject to the following conditions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * The above copyright notice and this permission notice (including the next
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * paragraph) shall be included in all copies or substantial portions of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * IN THE SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #ifndef __DRM_SYNCOBJ_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define __DRM_SYNCOBJ_H__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/dma-fence.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/dma-fence-chain.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct drm_file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * struct drm_syncobj - sync object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * This structure defines a generic sync object which wraps a &dma_fence.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct drm_syncobj {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * @refcount: Reference count of this object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct kref refcount;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * @fence:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * NULL or a pointer to the fence bound to this object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * This field should not be used directly. Use drm_syncobj_fence_get()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * and drm_syncobj_replace_fence() instead.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct dma_fence __rcu *fence;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * @cb_list: List of callbacks to call when the &fence gets replaced.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct list_head cb_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * @lock: Protects &cb_list and write-locks &fence.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) spinlock_t lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * @file: A file backing for this syncobj.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) struct file *file;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) void drm_syncobj_free(struct kref *kref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * drm_syncobj_get - acquire a syncobj reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * @obj: sync object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * This acquires an additional reference to @obj. It is illegal to call this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) * without already holding a reference. No locks required.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) drm_syncobj_get(struct drm_syncobj *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) kref_get(&obj->refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * drm_syncobj_put - release a reference to a sync object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * @obj: sync object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) drm_syncobj_put(struct drm_syncobj *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) kref_put(&obj->refcount, drm_syncobj_free);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * drm_syncobj_fence_get - get a reference to a fence in a sync object
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * @syncobj: sync object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * This acquires additional reference to &drm_syncobj.fence contained in @obj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * if not NULL. It is illegal to call this without already holding a reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * No locks required.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * Either the fence of @obj or NULL if there's none.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static inline struct dma_fence *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) drm_syncobj_fence_get(struct drm_syncobj *syncobj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct dma_fence *fence;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) fence = dma_fence_get_rcu_safe(&syncobj->fence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return fence;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct drm_syncobj *drm_syncobj_find(struct drm_file *file_private,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) u32 handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) void drm_syncobj_add_point(struct drm_syncobj *syncobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct dma_fence_chain *chain,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct dma_fence *fence,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) uint64_t point);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) void drm_syncobj_replace_fence(struct drm_syncobj *syncobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct dma_fence *fence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) int drm_syncobj_find_fence(struct drm_file *file_private,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) u32 handle, u64 point, u64 flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct dma_fence **fence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) void drm_syncobj_free(struct kref *kref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int drm_syncobj_create(struct drm_syncobj **out_syncobj, uint32_t flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct dma_fence *fence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) int drm_syncobj_get_handle(struct drm_file *file_private,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) struct drm_syncobj *syncobj, u32 *handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) int drm_syncobj_get_fd(struct drm_syncobj *syncobj, int *p_fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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