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1/* SPDX-License-Identifier: GPL-2.0 OR MIT */2/**************************************************************************3 *4 * Copyright 2011-2012 VMware, Inc., Palo Alto, CA., USA5 *6 * Permission is hereby granted, free of charge, to any person obtaining a7 * copy of this software and associated documentation files (the8 * "Software"), to deal in the Software without restriction, including9 * without limitation the rights to use, copy, modify, merge, publish,10 * distribute, sub license, and/or sell copies of the Software, and to11 * permit persons to whom the Software is furnished to do so, subject to12 * the following conditions:13 *14 * The above copyright notice and this permission notice (including the15 * next paragraph) shall be included in all copies or substantial portions16 * of the Software.17 *18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL21 * 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 OR23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE24 * 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 35struct drm_device;36struct drm_file;37struct drm_pending_event;38 39struct vmw_private;40struct vmw_fence_manager;41 42/**43 *44 *45 */46enum vmw_action_type {47 VMW_ACTION_EVENT = 0,48 VMW_ACTION_MAX49};50 51struct vmw_fence_action {52 struct list_head head;53 enum vmw_action_type type;54 void (*seq_passed) (struct vmw_fence_action *action);55 void (*cleanup) (struct vmw_fence_action *action);56};57 58struct vmw_fence_obj {59 struct dma_fence base;60 61 struct list_head head;62 struct list_head seq_passed_actions;63 void (*destroy)(struct vmw_fence_obj *fence);64};65 66extern struct vmw_fence_manager *67vmw_fence_manager_init(struct vmw_private *dev_priv);68 69extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);70 71static inline void72vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p)73{74 struct vmw_fence_obj *fence = *fence_p;75 76 *fence_p = NULL;77 if (fence)78 dma_fence_put(&fence->base);79}80 81static inline struct vmw_fence_obj *82vmw_fence_obj_reference(struct vmw_fence_obj *fence)83{84 if (fence)85 dma_fence_get(&fence->base);86 return fence;87}88 89extern void vmw_fences_update(struct vmw_fence_manager *fman);90 91extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence);92 93extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence,94 bool lazy,95 bool interruptible, unsigned long timeout);96 97extern int vmw_fence_create(struct vmw_fence_manager *fman,98 uint32_t seqno,99 struct vmw_fence_obj **p_fence);100 101extern int vmw_user_fence_create(struct drm_file *file_priv,102 struct vmw_fence_manager *fman,103 uint32_t sequence,104 struct vmw_fence_obj **p_fence,105 uint32_t *p_handle);106 107extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);108 109extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);110 111extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,112 struct drm_file *file_priv);113 114extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,115 struct drm_file *file_priv);116 117extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,118 struct drm_file *file_priv);119extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,120 struct drm_file *file_priv);121extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,122 struct vmw_fence_obj *fence,123 struct drm_pending_event *event,124 uint32_t *tv_sec,125 uint32_t *tv_usec,126 bool interruptible);127#endif /* _VMWGFX_FENCE_H_ */128