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      1 /*
      2  * AGPGART module version 0.99
      3  * Copyright (C) 1999 Jeff Hartmann
      4  * Copyright (C) 1999 Precision Insight, Inc.
      5  * Copyright (C) 1999 Xi Graphics, Inc.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining a
      8  * copy of this software and associated documentation files (the "Software"),
      9  * to deal in the Software without restriction, including without limitation
     10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     11  * and/or sell copies of the Software, and to permit persons to whom the
     12  * Software is furnished to do so, subject to the following conditions:
     13  *
     14  * The above copyright notice and this permission notice shall be included
     15  * in all copies or substantial portions of the Software.
     16  *
     17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     20  * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
     21  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     22  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
     23  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     24  *
     25  */
     26 
     27 #ifndef _AGP_H
     28 #define _AGP_H 1
     29 
     30 #define AGPIOC_BASE       'A'
     31 #define AGPIOC_INFO       _IOR (AGPIOC_BASE, 0, struct agp_info*)
     32 #define AGPIOC_ACQUIRE    _IO  (AGPIOC_BASE, 1)
     33 #define AGPIOC_RELEASE    _IO  (AGPIOC_BASE, 2)
     34 #define AGPIOC_SETUP      _IOW (AGPIOC_BASE, 3, struct agp_setup*)
     35 #define AGPIOC_RESERVE    _IOW (AGPIOC_BASE, 4, struct agp_region*)
     36 #define AGPIOC_PROTECT    _IOW (AGPIOC_BASE, 5, struct agp_region*)
     37 #define AGPIOC_ALLOCATE   _IOWR(AGPIOC_BASE, 6, struct agp_allocate*)
     38 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
     39 #define AGPIOC_BIND       _IOW (AGPIOC_BASE, 8, struct agp_bind*)
     40 #define AGPIOC_UNBIND     _IOW (AGPIOC_BASE, 9, struct agp_unbind*)
     41 #define AGPIOC_CHIPSET_FLUSH _IO (AGPIOC_BASE, 10)
     42 
     43 #define AGP_DEVICE      "/dev/agpgart"
     44 
     45 #ifndef TRUE
     46 #define TRUE 1
     47 #endif
     48 
     49 #ifndef FALSE
     50 #define FALSE 0
     51 #endif
     52 
     53 #include <linux/types.h>
     54 
     55 struct agp_version {
     56 	__u16 major;
     57 	__u16 minor;
     58 };
     59 
     60 typedef struct _agp_info {
     61 	struct agp_version version;	/* version of the driver        */
     62 	__u32 bridge_id;	/* bridge vendor/device         */
     63 	__u32 agp_mode;		/* mode info of bridge          */
     64 	unsigned long aper_base;/* base of aperture             */
     65 	size_t aper_size;	/* size of aperture             */
     66 	size_t pg_total;	/* max pages (swap + system)    */
     67 	size_t pg_system;	/* max pages (system)           */
     68 	size_t pg_used;		/* current pages used           */
     69 } agp_info;
     70 
     71 typedef struct _agp_setup {
     72 	__u32 agp_mode;		/* mode info of bridge          */
     73 } agp_setup;
     74 
     75 /*
     76  * The "prot" down below needs still a "sleep" flag somehow ...
     77  */
     78 typedef struct _agp_segment {
     79 	__kernel_off_t pg_start;	/* starting page to populate    */
     80 	__kernel_size_t pg_count;	/* number of pages              */
     81 	int prot;			/* prot flags for mmap          */
     82 } agp_segment;
     83 
     84 typedef struct _agp_region {
     85 	__kernel_pid_t pid;		/* pid of process       */
     86 	__kernel_size_t seg_count;	/* number of segments   */
     87 	struct _agp_segment *seg_list;
     88 } agp_region;
     89 
     90 typedef struct _agp_allocate {
     91 	int key;		/* tag of allocation            */
     92 	__kernel_size_t pg_count;/* number of pages             */
     93 	__u32 type;		/* 0 == normal, other devspec   */
     94    	__u32 physical;         /* device specific (some devices
     95 				 * need a phys address of the
     96 				 * actual page behind the gatt
     97 				 * table)                        */
     98 } agp_allocate;
     99 
    100 typedef struct _agp_bind {
    101 	int key;		/* tag of allocation            */
    102 	__kernel_off_t pg_start;/* starting page to populate    */
    103 } agp_bind;
    104 
    105 typedef struct _agp_unbind {
    106 	int key;		/* tag of allocation            */
    107 	__u32 priority;		/* priority for paging out      */
    108 } agp_unbind;
    109 
    110 
    111 #endif				/* _AGP_H */
    112