1 /* SPDX-License-Identifier: GPL-2.0 OR MIT */
2 /**************************************************************************
3 *
4 * Copyright 2011-2012 VMware, Inc., Palo Alto, CA., USA
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 #ifndef _VMWGFX_FENCE_H_
29
30 #include <linux/dma-fence.h>
31 #include <linux/dma-fence-array.h>
32
33 #define VMW_FENCE_WAIT_TIMEOUT (5*HZ)
34
35 struct drm_device;
36 struct drm_file;
37 struct drm_pending_event;
38
39 struct vmw_private;
40 struct vmw_fence_manager;
41
42 struct vmw_fence_obj {
43 struct dma_fence base;
44 bool waiter_added;
45 struct list_head head;
46 void (*destroy)(struct vmw_fence_obj *fence);
47 };
48
49 extern struct vmw_fence_manager *
50 vmw_fence_manager_init(struct vmw_private *dev_priv);
51
52 extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
53
54 static inline void
vmw_fence_obj_unreference(struct vmw_fence_obj ** fence_p)55 vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p)
56 {
57 struct vmw_fence_obj *fence = *fence_p;
58
59 *fence_p = NULL;
60 if (fence)
61 dma_fence_put(&fence->base);
62 }
63
64 static inline struct vmw_fence_obj *
vmw_fence_obj_reference(struct vmw_fence_obj * fence)65 vmw_fence_obj_reference(struct vmw_fence_obj *fence)
66 {
67 if (fence)
68 dma_fence_get(&fence->base);
69 return fence;
70 }
71
72 u32 vmw_fences_update(struct vmw_fence_manager *fman);
73
74 extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence);
75
76 extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence,
77 bool lazy,
78 bool interruptible, unsigned long timeout);
79
80 extern int vmw_fence_create(struct vmw_fence_manager *fman,
81 uint32_t seqno,
82 struct vmw_fence_obj **p_fence);
83
84 extern int vmw_user_fence_create(struct drm_file *file_priv,
85 struct vmw_fence_manager *fman,
86 uint32_t sequence,
87 struct vmw_fence_obj **p_fence,
88 uint32_t *p_handle);
89
90 extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
91
92 extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
93
94 extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
95 struct drm_file *file_priv);
96
97 extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
98 struct drm_file *file_priv);
99
100 extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
101 struct drm_file *file_priv);
102 extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
103 struct drm_file *file_priv);
104 extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
105 struct vmw_fence_obj *fence,
106 struct drm_pending_event *event,
107 uint32_t *tv_sec,
108 uint32_t *tv_usec,
109 bool interruptible);
110 #endif /* _VMWGFX_FENCE_H_ */
111