/* SPDX-License-Identifier: GPL-2.0 OR MIT */
/**************************************************************************
*
* Copyright 2011-2012 VMware, Inc., Palo Alto, CA., USA
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#ifndef _VMWGFX_FENCE_H_
#include <linux/dma-fence.h>
#include <linux/dma-fence-array.h>
#define VMW_FENCE_WAIT_TIMEOUT (5*HZ)
struct drm_device;
struct drm_file;
struct drm_pending_event;
struct vmw_private;
struct vmw_fence_manager;
/**
*
*
*/
enum vmw_action_type {
VMW_ACTION_EVENT = 0,
VMW_ACTION_MAX
};
struct vmw_fence_action {
struct list_head head;
enum vmw_action_type type;
void (*seq_passed) (struct vmw_fence_action *action);
void (*cleanup) (struct vmw_fence_action *action);
};
struct vmw_fence_obj {
struct dma_fence base;
struct list_head head;
struct list_head seq_passed_actions;
void (*destroy)(struct vmw_fence_obj *fence);
};
extern struct vmw_fence_manager *
vmw_fence_manager_init(struct vmw_private *dev_priv);
extern void vmw_fence_manager_takedown(struct vmw_fence_manager *fman);
static inline void
vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p)
{
struct vmw_fence_obj *fence = *fence_p;
*fence_p = NULL;
if (fence)
dma_fence_put(&fence->base);
}
static inline struct vmw_fence_obj *
vmw_fence_obj_reference(struct vmw_fence_obj *fence)
{
if (fence)
dma_fence_get(&fence->base);
return fence;
}
extern void vmw_fences_update(struct vmw_fence_manager *fman);
extern bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence);
extern int vmw_fence_obj_wait(struct vmw_fence_obj *fence,
bool lazy,
bool interruptible, unsigned long timeout);
extern int vmw_fence_create(struct vmw_fence_manager *fman,
uint32_t seqno,
struct vmw_fence_obj **p_fence);
extern int vmw_user_fence_create(struct drm_file *file_priv,
struct vmw_fence_manager *fman,
uint32_t sequence,
struct vmw_fence_obj **p_fence,
uint32_t *p_handle);
extern void vmw_fence_fifo_up(struct vmw_fence_manager *fman);
extern void vmw_fence_fifo_down(struct vmw_fence_manager *fman);
extern int vmw_fence_obj_wait_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_fence_obj_signaled_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
extern int vmw_event_fence_action_queue(struct drm_file *filee_priv,
struct vmw_fence_obj *fence,
struct drm_pending_event *event,
uint32_t *tv_sec,
uint32_t *tv_usec,
bool interruptible);
#endif /* _VMWGFX_FENCE_H_ */
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