agpgart.h

  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#ifndef _AGP_H
 27#define _AGP_H 1
 28
 29#include <linux/mutex.h>
 30#include <linux/agp_backend.h>
 31#include <uapi/linux/agpgart.h>
 32
 33struct agp_info {
 34	struct agp_version version;	/* version of the driver        */
 35	u32 bridge_id;		/* bridge vendor/device         */
 36	u32 agp_mode;		/* mode info of bridge          */
 37	unsigned long aper_base;/* base of aperture             */
 38	size_t aper_size;	/* size of aperture             */
 39	size_t pg_total;	/* max pages (swap + system)    */
 40	size_t pg_system;	/* max pages (system)           */
 41	size_t pg_used;		/* current pages used           */
 42};
 43
 44struct agp_setup {
 45	u32 agp_mode;		/* mode info of bridge          */
 46};
 47
 48/*
 49 * The "prot" down below needs still a "sleep" flag somehow ...
 50 */
 51struct agp_segment {
 52	off_t pg_start;		/* starting page to populate    */
 53	size_t pg_count;	/* number of pages              */
 54	int prot;		/* prot flags for mmap          */
 55};
 56
 57struct agp_segment_priv {
 58	off_t pg_start;
 59	size_t pg_count;
 60	pgprot_t prot;
 61};
 62
 63struct agp_region {
 64	pid_t pid;		/* pid of process               */
 65	size_t seg_count;	/* number of segments           */
 66	struct agp_segment *seg_list;
 67};
 68
 69struct agp_allocate {
 70	int key;		/* tag of allocation            */
 71	size_t pg_count;	/* number of pages              */
 72	u32 type;		/* 0 == normal, other devspec   */
 73	u32 physical;           /* device specific (some devices  
 74				 * need a phys address of the     
 75				 * actual page behind the gatt    
 76				 * table)                        */
 77};
 78
 79struct agp_bind {
 80	int key;		/* tag of allocation            */
 81	off_t pg_start;		/* starting page to populate    */
 82};
 83
 84struct agp_unbind {
 85	int key;		/* tag of allocation            */
 86	u32 priority;		/* priority for paging out      */
 87};
 88
 89struct agp_client {
 90	struct agp_client *next;
 91	struct agp_client *prev;
 92	pid_t pid;
 93	int num_segments;
 94	struct agp_segment_priv **segments;
 95};
 96
 97struct agp_controller {
 98	struct agp_controller *next;
 99	struct agp_controller *prev;
100	pid_t pid;
101	int num_clients;
102	struct agp_memory *pool;
103	struct agp_client *clients;
104};
105
106#define AGP_FF_ALLOW_CLIENT		0
107#define AGP_FF_ALLOW_CONTROLLER 	1
108#define AGP_FF_IS_CLIENT		2
109#define AGP_FF_IS_CONTROLLER		3
110#define AGP_FF_IS_VALID 		4
111
112struct agp_file_private {
113	struct agp_file_private *next;
114	struct agp_file_private *prev;
115	pid_t my_pid;
116	unsigned long access_flags;	/* long req'd for set_bit --RR */
117};
118
119struct agp_front_data {
120	struct mutex agp_mutex;
121	struct agp_controller *current_controller;
122	struct agp_controller *controllers;
123	struct agp_file_private *file_priv_list;
124	bool used_by_controller;
125	bool backend_acquired;
126};
127
128#endif				/* _AGP_H */