agpgart.h

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/*
 * AGPGART module version 0.99
 * Copyright (C) 1999 Jeff Hartmann
 * Copyright (C) 1999 Precision Insight, Inc.
 * Copyright (C) 1999 Xi Graphics, Inc.
 *
 * 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 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
 * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS 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 _UAPI_AGP_H
#define _UAPI_AGP_H

#define AGPIOC_BASE       'A'
#define AGPIOC_INFO       _IOR (AGPIOC_BASE, 0, struct agp_info*)
#define AGPIOC_ACQUIRE    _IO  (AGPIOC_BASE, 1)
#define AGPIOC_RELEASE    _IO  (AGPIOC_BASE, 2)
#define AGPIOC_SETUP      _IOW (AGPIOC_BASE, 3, struct agp_setup*)
#define AGPIOC_RESERVE    _IOW (AGPIOC_BASE, 4, struct agp_region*)
#define AGPIOC_PROTECT    _IOW (AGPIOC_BASE, 5, struct agp_region*)
#define AGPIOC_ALLOCATE   _IOWR(AGPIOC_BASE, 6, struct agp_allocate*)
#define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
#define AGPIOC_BIND       _IOW (AGPIOC_BASE, 8, struct agp_bind*)
#define AGPIOC_UNBIND     _IOW (AGPIOC_BASE, 9, struct agp_unbind*)
#define AGPIOC_CHIPSET_FLUSH _IO (AGPIOC_BASE, 10)

#define AGP_DEVICE      "/dev/agpgart"

#ifndef TRUE
#define TRUE 1
#endif

#ifndef FALSE
#define FALSE 0
#endif

#ifndef __KERNEL__
#include <linux/types.h>

struct agp_version {
    __u16 major;
    __u16 minor;
};

typedef struct _agp_info {
    struct agp_version version; /* version of the driver        */
    __u32 bridge_id;    /* bridge vendor/device         */
    __u32 agp_mode;     /* mode info of bridge          */
    unsigned long aper_base;/* base of aperture             */
    size_t aper_size;   /* size of aperture             */
    size_t pg_total;    /* max pages (swap + system)    */
    size_t pg_system;   /* max pages (system)           */
    size_t pg_used;     /* current pages used           */
} agp_info;

typedef struct _agp_setup {
    __u32 agp_mode;     /* mode info of bridge          */
} agp_setup;

/*
 * The "prot" down below needs still a "sleep" flag somehow ...
 */
typedef struct _agp_segment {
    __kernel_off_t pg_start;    /* starting page to populate    */
    __kernel_size_t pg_count;   /* number of pages              */
    int prot;           /* prot flags for mmap          */
} agp_segment;

typedef struct _agp_region {
    __kernel_pid_t pid;     /* pid of process       */
    __kernel_size_t seg_count;  /* number of segments   */
    struct _agp_segment *seg_list;
} agp_region;

typedef struct _agp_allocate {
    int key;        /* tag of allocation            */
    __kernel_size_t pg_count;/* number of pages             */
    __u32 type;     /* 0 == normal, other devspec   */
    __u32 physical;         /* device specific (some devices  
                 * need a phys address of the     
                 * actual page behind the gatt    
                 * table)                        */
} agp_allocate;

typedef struct _agp_bind {
    int key;        /* tag of allocation            */
    __kernel_off_t pg_start;/* starting page to populate    */
} agp_bind;

typedef struct _agp_unbind {
    int key;        /* tag of allocation            */
    __u32 priority;     /* priority for paging out      */
} agp_unbind;

#endif              /* __KERNEL__ */

#endif /* _UAPI_AGP_H */