93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2013 Red Hat
|
||
|
|
*
|
||
|
|
* 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, sublicense,
|
||
|
|
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
|
||
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS 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 DRM_FLIP_WORK_H
|
||
|
|
#define DRM_FLIP_WORK_H
|
||
|
|
|
||
|
|
#include <linux/kfifo.h>
|
||
|
|
#include <linux/spinlock.h>
|
||
|
|
#include <linux/workqueue.h>
|
||
|
|
|
||
|
|
/**
|
||
|
|
* DOC: flip utils
|
||
|
|
*
|
||
|
|
* Util to queue up work to run from work-queue context after flip/vblank.
|
||
|
|
* Typically this can be used to defer unref of framebuffer's, cursor
|
||
|
|
* bo's, etc until after vblank. The APIs are all thread-safe.
|
||
|
|
* Moreover, drm_flip_work_queue_task and drm_flip_work_queue can be called
|
||
|
|
* in atomic context.
|
||
|
|
*/
|
||
|
|
|
||
|
|
struct drm_flip_work;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* drm_flip_func_t - callback function
|
||
|
|
*
|
||
|
|
* @work: the flip work
|
||
|
|
* @val: value queued via drm_flip_work_queue()
|
||
|
|
*
|
||
|
|
* Callback function to be called for each of the queue'd work items after
|
||
|
|
* drm_flip_work_commit() is called.
|
||
|
|
*/
|
||
|
|
typedef void (*drm_flip_func_t)(struct drm_flip_work *work, void *val);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct drm_flip_task - flip work task
|
||
|
|
* @node: list entry element
|
||
|
|
* @data: data to pass to &drm_flip_work.func
|
||
|
|
*/
|
||
|
|
struct drm_flip_task {
|
||
|
|
struct list_head node;
|
||
|
|
void *data;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* struct drm_flip_work - flip work queue
|
||
|
|
* @name: debug name
|
||
|
|
* @func: callback fxn called for each committed item
|
||
|
|
* @worker: worker which calls @func
|
||
|
|
* @queued: queued tasks
|
||
|
|
* @commited: commited tasks
|
||
|
|
* @lock: lock to access queued and commited lists
|
||
|
|
*/
|
||
|
|
struct drm_flip_work {
|
||
|
|
const char *name;
|
||
|
|
drm_flip_func_t func;
|
||
|
|
struct work_struct worker;
|
||
|
|
struct list_head queued;
|
||
|
|
struct list_head commited;
|
||
|
|
spinlock_t lock;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct drm_flip_task *drm_flip_work_allocate_task(void *data, gfp_t flags);
|
||
|
|
void drm_flip_work_queue_task(struct drm_flip_work *work,
|
||
|
|
struct drm_flip_task *task);
|
||
|
|
void drm_flip_work_queue(struct drm_flip_work *work, void *val);
|
||
|
|
void drm_flip_work_commit(struct drm_flip_work *work,
|
||
|
|
struct workqueue_struct *wq);
|
||
|
|
void drm_flip_work_init(struct drm_flip_work *work,
|
||
|
|
const char *name, drm_flip_func_t func);
|
||
|
|
void drm_flip_work_cleanup(struct drm_flip_work *work);
|
||
|
|
|
||
|
|
#endif /* DRM_FLIP_WORK_H */
|