1/**************************************************************************
  2 *
  3 * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA
  4 * All Rights Reserved.
  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#define VMW_FENCE_WAIT_TIMEOUT (5*HZ)
 31
 32struct vmw_private;
 33
 34struct vmw_fence_manager;
 35
 36/**
 37 *
 38 *
 39 */
 40enum vmw_action_type {
 41	VMW_ACTION_EVENT = 0,
 42	VMW_ACTION_MAX
 43};
 44
 45struct vmw_fence_action {
 46	struct list_head head;
 47	enum vmw_action_type type;
 48	void (*seq_passed) (struct vmw_fence_action *action);
 49	void (*cleanup) (struct vmw_fence_action *action);
 50};
 51
 52struct vmw_fence_obj {
 53	struct kref kref;
 54	u32 seqno;
 55
 56	struct vmw_fence_manager *fman;
 57	struct list_head head;
 58	uint32_t signaled;
 59	uint32_t signal_mask;
 60	struct list_head seq_passed_actions;
 61	void (*destroy)(struct vmw_fence_obj *fence);
 62	wait_queue_head_t queue;
 63};
 64
 65extern struct vmw_fence_manager *
 66vmw_fence_manager_init(struct vmw_private *dev_priv);
 67
 68extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
 69
 70extern void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p);
 71
 72extern struct vmw_fence_obj *
 73vmw_fence_obj_reference(struct vmw_fence_obj *fence);
 74
 75extern void vmw_fences_update(struct vmw_fence_manager *fman);
 76
 77extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence,
 78				   uint32_t flags);
 79
 80extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence, uint32_t flags,
 81			      bool lazy,
 82			      bool interruptible, unsigned long timeout);
 83
 84extern void vmw_fence_obj_flush(struct vmw_fence_obj *fence);
 85
 86extern int vmw_fence_create(struct vmw_fence_manager *fman,
 87			    uint32_t seqno,
 88			    uint32_t mask,
 89			    struct vmw_fence_obj **p_fence);
 90
 91extern int vmw_user_fence_create(struct drm_file *file_priv,
 92				 struct vmw_fence_manager *fman,
 93				 uint32_t sequence,
 94				 uint32_t mask,
 95				 struct vmw_fence_obj **p_fence,
 96				 uint32_t *p_handle);
 97
 98extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
 99
100extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
101
102extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
103				    struct drm_file *file_priv);
104
105extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
106					struct drm_file *file_priv);
107
108extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
109				     struct drm_file *file_priv);
110extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
111				 struct drm_file *file_priv);
112extern void vmw_event_fence_fpriv_gone(struct vmw_fence_manager *fman,
113				       struct list_head *event_list);
114extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
115					struct vmw_fence_obj *fence,
116					struct drm_pending_event *event,
117					uint32_t *tv_sec,
118					uint32_t *tv_usec,
119					bool interruptible);
120#endif /* _VMWGFX_FENCE_H_ */