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/**
* \file drm_agp.h
* DRM support for AGP/GART backend
*
* \author Rickard E. (Rik) Faith <faith@valinux.com>
* \author Gareth Hughes <gareth@valinux.com>
*/
/*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* All Rights Reserved.
*
* 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
* VA LINUX SYSTEMS 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 _DRM_AGP_H_
#define _DRM_AGP_H_
#ifndef __HAVE_AGP
#define __HAVE_AGP 0
#endif
#define __REALLY_HAVE_AGP (__HAVE_AGP && \
(defined(CONFIG_AGP) || defined(CONFIG_AGP_MODULE)))
#if __REALLY_HAVE_AGP
#include <linux/types.h>
#include <linux/agp_backend.h>
/**
* AGP memory entry. Stored as a doubly linked list.
*/
typedef struct drm_agp_mem {
unsigned long handle; /**< handle */
agp_memory *memory;
unsigned long bound; /**< address */
int pages;
struct drm_agp_mem *prev; /**< previous entry */
struct drm_agp_mem *next; /**< next entry */
} drm_agp_mem_t;
/**
* AGP data.
*
* \sa DRM(agp_init)() and drm_device::agp.
*/
typedef struct drm_agp_head {
agp_kern_info agp_info; /**< AGP device information */
drm_agp_mem_t *memory; /**< memory entries */
unsigned long mode; /**< AGP mode */
int enabled; /**< whether the AGP bus as been enabled */
int acquired; /**< whether the AGP device has been acquired */
unsigned long base;
int agp_mtrr;
int cant_use_aperture;
unsigned long page_mask;
} drm_agp_head_t;
/** \name Prototypes */
/*@{*/
extern int DRM(agp_acquire)(void);
extern void DRM(agp_release)(void);
extern void DRM(agp_enable)(unsigned long mode);
extern agp_memory *DRM(agp_allocate_memory)(size_t pages, u32 type);
extern int DRM(agp_free_memory)(agp_memory *handle);
extern int DRM(agp_bind_memory)(agp_memory *handle, off_t start);
extern int DRM(agp_unbind_memory)(agp_memory *handle);
extern int DRM(agp_acquire_ioctl)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
extern int DRM(agp_release_ioctl)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
extern int DRM(agp_enable_ioctl)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
extern int DRM(agp_info_ioctl)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
extern int DRM(agp_alloc_ioctl)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
extern int DRM(agp_free_ioctl)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
extern int DRM(agp_bind_ioctl)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
extern int DRM(agp_unbind_ioctl)(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
extern void DRM(agp_init)(void);
extern void DRM(agp_cleanup)(void);
extern void DRM(agp_init_dev)(drm_device_t *dev);
extern void DRM(agp_cleanup_dev)(drm_device_t *dev);
/*@}*/
#endif /* __REALLY_HAVE_AGP */
#endif /* !_DRM_AGP_H_ */
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