The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/agpio.h

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    1 /*      $NetBSD: agpio.h,v 1.2 2003/02/24 21:59:52 tron Exp $   */
    2 
    3 /*-
    4  * Copyright (c) 2000 Doug Rabson
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  *      $FreeBSD: src/sys/sys/agpio.h,v 1.1 2000/06/09 16:04:30 dfr Exp $
   29  */
   30 
   31 #ifndef _SYS_AGPIO_H_
   32 #define _SYS_AGPIO_H_
   33 
   34 /*
   35  * The AGP gatt uses 4k pages irrespective of the host page size.
   36  */
   37 #define AGP_PAGE_SIZE           4096
   38 #define AGP_PAGE_SHIFT          12
   39 
   40 /*
   41  * Macros to manipulate AGP mode words.
   42  */
   43 #define AGP_MODE_GET_RQ(x)              (((x) & 0xff000000U) >> 24)
   44 #define AGP_MODE_GET_SBA(x)             (((x) & 0x00000200U) >> 9)
   45 #define AGP_MODE_GET_AGP(x)             (((x) & 0x00000100U) >> 8)
   46 #define AGP_MODE_GET_4G(x)              (((x) & 0x00000020U) >> 5)
   47 #define AGP_MODE_GET_FW(x)              (((x) & 0x00000010U) >> 4)
   48 #define AGP_MODE_GET_RATE(x)            ((x) & 0x00000007U)
   49 #define AGP_MODE_SET_RQ(x,v)            (((x) & ~0xff000000U) | ((v) << 24))
   50 #define AGP_MODE_SET_SBA(x,v)           (((x) & ~0x00000200U) | ((v) << 9))
   51 #define AGP_MODE_SET_AGP(x,v)           (((x) & ~0x00000100U) | ((v) << 8))
   52 #define AGP_MODE_SET_4G(x,v)            (((x) & ~0x00000020U) | ((v) << 5))
   53 #define AGP_MODE_SET_FW(x,v)            (((x) & ~0x00000010U) | ((v) << 4))
   54 #define AGP_MODE_SET_RATE(x,v)          (((x) & ~0x00000007U) | (v))
   55 #define AGP_MODE_RATE_1x                0x00000001
   56 #define AGP_MODE_RATE_2x                0x00000002
   57 #define AGP_MODE_RATE_4x                0x00000004
   58 
   59 #define AGPIOC_BASE       'A'
   60 #define AGPIOC_INFO       _IOR (AGPIOC_BASE, 0, agp_info)
   61 #define AGPIOC_ACQUIRE    _IO  (AGPIOC_BASE, 1)
   62 #define AGPIOC_RELEASE    _IO  (AGPIOC_BASE, 2)
   63 #define AGPIOC_SETUP      _IOW (AGPIOC_BASE, 3, agp_setup)
   64 #if 0
   65 #define AGPIOC_RESERVE    _IOW (AGPIOC_BASE, 4, agp_region)
   66 #define AGPIOC_PROTECT    _IOW (AGPIOC_BASE, 5, agp_region)
   67 #endif
   68 #define AGPIOC_ALLOCATE   _IOWR(AGPIOC_BASE, 6, agp_allocate)
   69 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
   70 #define AGPIOC_BIND       _IOW (AGPIOC_BASE, 8, agp_bind)
   71 #define AGPIOC_UNBIND     _IOW (AGPIOC_BASE, 9, agp_unbind)
   72 
   73 typedef struct _agp_version {
   74         u_int16_t major;
   75         u_int16_t minor;
   76 } agp_version;
   77 
   78 typedef struct _agp_info {
   79         agp_version version;    /* version of the driver        */
   80         u_int32_t bridge_id;    /* bridge vendor/device         */
   81         u_int32_t agp_mode;     /* mode info of bridge          */
   82         off_t aper_base;        /* base of aperture             */
   83         size_t aper_size;       /* size of aperture             */
   84         size_t pg_total;        /* max pages (swap + system)    */
   85         size_t pg_system;       /* max pages (system)           */
   86         size_t pg_used;         /* current pages used           */
   87 } agp_info;
   88 
   89 typedef struct _agp_setup {
   90         u_int32_t agp_mode;             /* mode info of bridge          */
   91 } agp_setup;
   92 
   93 #if 0
   94 /*
   95  * The "prot" down below needs still a "sleep" flag somehow ...
   96  */
   97 typedef struct _agp_segment {
   98         off_t pg_start;         /* starting page to populate    */
   99         size_t pg_count;        /* number of pages              */
  100         int prot;               /* prot flags for mmap          */
  101 } agp_segment;
  102 
  103 typedef struct _agp_region {
  104         pid_t pid;              /* pid of process               */
  105         size_t seg_count;       /* number of segments           */
  106         struct _agp_segment *seg_list;
  107 } agp_region;
  108 #endif
  109 
  110 typedef struct _agp_allocate {
  111         int key;                /* tag of allocation            */
  112         size_t pg_count;        /* number of pages              */
  113         u_int32_t type;         /* 0 == normal, other devspec   */
  114         paddr_t physical;       /* device specific (some devices  
  115                                  * need a phys address of the     
  116                                  * actual page behind the gatt    
  117                                  * table)                        */
  118 } agp_allocate;
  119 
  120 typedef struct _agp_bind {
  121         int key;                /* tag of allocation            */
  122         off_t pg_start;         /* starting page to populate    */
  123 } agp_bind;
  124 
  125 typedef struct _agp_unbind {
  126         int key;                /* tag of allocation            */
  127         u_int32_t priority;     /* priority for paging out      */
  128 } agp_unbind;
  129 
  130 #endif /* !_SYS_AGPIO_H_ */

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