1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 OR MIT */
2*4882a593Smuzhiyun /**************************************************************************
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright 2011-2012 VMware, Inc., Palo Alto, CA., USA
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Permission is hereby granted, free of charge, to any person obtaining a
7*4882a593Smuzhiyun * copy of this software and associated documentation files (the
8*4882a593Smuzhiyun * "Software"), to deal in the Software without restriction, including
9*4882a593Smuzhiyun * without limitation the rights to use, copy, modify, merge, publish,
10*4882a593Smuzhiyun * distribute, sub license, and/or sell copies of the Software, and to
11*4882a593Smuzhiyun * permit persons to whom the Software is furnished to do so, subject to
12*4882a593Smuzhiyun * the following conditions:
13*4882a593Smuzhiyun *
14*4882a593Smuzhiyun * The above copyright notice and this permission notice (including the
15*4882a593Smuzhiyun * next paragraph) shall be included in all copies or substantial portions
16*4882a593Smuzhiyun * of the Software.
17*4882a593Smuzhiyun *
18*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19*4882a593Smuzhiyun * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20*4882a593Smuzhiyun * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21*4882a593Smuzhiyun * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22*4882a593Smuzhiyun * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23*4882a593Smuzhiyun * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24*4882a593Smuzhiyun * USE OR OTHER DEALINGS IN THE SOFTWARE.
25*4882a593Smuzhiyun *
26*4882a593Smuzhiyun **************************************************************************/
27*4882a593Smuzhiyun
28*4882a593Smuzhiyun #ifndef _VMWGFX_FENCE_H_
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun #include <linux/dma-fence.h>
31*4882a593Smuzhiyun #include <linux/dma-fence-array.h>
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun #define VMW_FENCE_WAIT_TIMEOUT (5*HZ)
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun struct drm_device;
36*4882a593Smuzhiyun struct drm_file;
37*4882a593Smuzhiyun struct drm_pending_event;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun struct vmw_private;
40*4882a593Smuzhiyun struct vmw_fence_manager;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun /**
43*4882a593Smuzhiyun *
44*4882a593Smuzhiyun *
45*4882a593Smuzhiyun */
46*4882a593Smuzhiyun enum vmw_action_type {
47*4882a593Smuzhiyun VMW_ACTION_EVENT = 0,
48*4882a593Smuzhiyun VMW_ACTION_MAX
49*4882a593Smuzhiyun };
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun struct vmw_fence_action {
52*4882a593Smuzhiyun struct list_head head;
53*4882a593Smuzhiyun enum vmw_action_type type;
54*4882a593Smuzhiyun void (*seq_passed) (struct vmw_fence_action *action);
55*4882a593Smuzhiyun void (*cleanup) (struct vmw_fence_action *action);
56*4882a593Smuzhiyun };
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun struct vmw_fence_obj {
59*4882a593Smuzhiyun struct dma_fence base;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun struct list_head head;
62*4882a593Smuzhiyun struct list_head seq_passed_actions;
63*4882a593Smuzhiyun void (*destroy)(struct vmw_fence_obj *fence);
64*4882a593Smuzhiyun };
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun extern struct vmw_fence_manager *
67*4882a593Smuzhiyun vmw_fence_manager_init(struct vmw_private *dev_priv);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun static inline void
vmw_fence_obj_unreference(struct vmw_fence_obj ** fence_p)72*4882a593Smuzhiyun vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p)
73*4882a593Smuzhiyun {
74*4882a593Smuzhiyun struct vmw_fence_obj *fence = *fence_p;
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun *fence_p = NULL;
77*4882a593Smuzhiyun if (fence)
78*4882a593Smuzhiyun dma_fence_put(&fence->base);
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun static inline struct vmw_fence_obj *
vmw_fence_obj_reference(struct vmw_fence_obj * fence)82*4882a593Smuzhiyun vmw_fence_obj_reference(struct vmw_fence_obj *fence)
83*4882a593Smuzhiyun {
84*4882a593Smuzhiyun if (fence)
85*4882a593Smuzhiyun dma_fence_get(&fence->base);
86*4882a593Smuzhiyun return fence;
87*4882a593Smuzhiyun }
88*4882a593Smuzhiyun
89*4882a593Smuzhiyun extern void vmw_fences_update(struct vmw_fence_manager *fman);
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence);
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence,
94*4882a593Smuzhiyun bool lazy,
95*4882a593Smuzhiyun bool interruptible, unsigned long timeout);
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence);
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun extern int vmw_fence_create(struct vmw_fence_manager *fman,
100*4882a593Smuzhiyun uint32_t seqno,
101*4882a593Smuzhiyun struct vmw_fence_obj **p_fence);
102*4882a593Smuzhiyun
103*4882a593Smuzhiyun extern int vmw_user_fence_create(struct drm_file *file_priv,
104*4882a593Smuzhiyun struct vmw_fence_manager *fman,
105*4882a593Smuzhiyun uint32_t sequence,
106*4882a593Smuzhiyun struct vmw_fence_obj **p_fence,
107*4882a593Smuzhiyun uint32_t *p_handle);
108*4882a593Smuzhiyun
109*4882a593Smuzhiyun extern int vmw_wait_dma_fence(struct vmw_fence_manager *fman,
110*4882a593Smuzhiyun struct dma_fence *fence);
111*4882a593Smuzhiyun
112*4882a593Smuzhiyun extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
115*4882a593Smuzhiyun
116*4882a593Smuzhiyun extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
117*4882a593Smuzhiyun struct drm_file *file_priv);
118*4882a593Smuzhiyun
119*4882a593Smuzhiyun extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
120*4882a593Smuzhiyun struct drm_file *file_priv);
121*4882a593Smuzhiyun
122*4882a593Smuzhiyun extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
123*4882a593Smuzhiyun struct drm_file *file_priv);
124*4882a593Smuzhiyun extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
125*4882a593Smuzhiyun struct drm_file *file_priv);
126*4882a593Smuzhiyun extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
127*4882a593Smuzhiyun struct vmw_fence_obj *fence,
128*4882a593Smuzhiyun struct drm_pending_event *event,
129*4882a593Smuzhiyun uint32_t *tv_sec,
130*4882a593Smuzhiyun uint32_t *tv_usec,
131*4882a593Smuzhiyun bool interruptible);
132*4882a593Smuzhiyun #endif /* _VMWGFX_FENCE_H_ */
133