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 1.13 2021/12/19 01:51:17 riastradh 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 #include <sys/types.h>
   35 #include <sys/ioccom.h>
   36 
   37 /*
   38  * The AGP gatt uses 4k pages irrespective of the host page size.
   39  */
   40 #define AGP_PAGE_SIZE           4096
   41 #define AGP_PAGE_SHIFT          12
   42 
   43 /*
   44  * Macros to manipulate AGP mode words.
   45  */
   46 #define AGP_MODE_GET_RQ(x)              __SHIFTOUT((x), AGP_MODE_RQ)
   47 #define AGP_MODE_GET_ARQSZ(x)           __SHIFTOUT((x), AGP_MODE_ARQSZ)
   48 #define AGP_MODE_GET_CAL(x)             __SHIFTOUT((x), AGP_MODE_CAL)
   49 #define AGP_MODE_GET_SBA(x)             __SHIFTOUT((x), AGP_MODE_SBA)
   50 #define AGP_MODE_GET_AGP(x)             __SHIFTOUT((x), AGP_MODE_AGP)
   51 #define AGP_MODE_GET_4G(x)              __SHIFTOUT((x), AGP_MODE_4G)
   52 #define AGP_MODE_GET_FW(x)              __SHIFTOUT((x), AGP_MODE_FW)
   53 #define AGP_MODE_GET_MODE_3(x)          __SHIFTOUT((x), AGP_MODE_MODE_3)
   54 #define AGP_MODE_GET_RATE(x)            __SHIFTOUT((x), AGP_MODE_RATE)
   55 #define AGP_MODE_SET_RQ(x, v)           (((x) & ~AGP_MODE_RQ)           \
   56                                          | __SHIFTIN((v), AGP_MODE_RQ))
   57 #define AGP_MODE_SET_ARQSZ(x, v)        (((x) & ~AGP_MODE_ARQSZ)        \
   58                                          | __SHIFTIN((v), AGP_MODE_ARQSZ))
   59 #define AGP_MODE_SET_CAL(x, v)          (((x) & ~AGP_MODE_CAL)          \
   60                                          | __SHIFTIN((v), ~AGP_MODE_CAL))
   61 #define AGP_MODE_SET_SBA(x, v)          (((x) & ~AGP_MODE_SBA)          \
   62                                          | __SHIFTIN((v), AGP_MODE_SBA))
   63 #define AGP_MODE_SET_AGP(x, v)          (((x) & ~AGP_MODE_AGP)          \
   64                                          | __SHIFTIN((v), AGP_MODE_AGP))
   65 #define AGP_MODE_SET_4G(x, v)           (((x) & ~AGP_MODE_4G)           \
   66                                          | __SHIFTIN((v), AGP_MODE_4G))
   67 #define AGP_MODE_SET_FW(x, v)           (((x) & ~AGP_MODE_FW)           \
   68                                          | __SHIFTIN((v), AGP_MODE_FW))
   69 #define AGP_MODE_SET_MODE_3(x, v)       (((x) & ~AGP_MODE_MODE_3)       \
   70                                          | __SHIFTIN((v), AGP_MODE_MODE_3))
   71 #define AGP_MODE_SET_RATE(x, v)         (((x) & ~AGP_MODE_RATE)         \
   72                                          | __SHIFTIN((v), AGP_MODE_RATE))
   73 
   74 /* compat */
   75 #define AGP_MODE_RATE_1x                AGP_MODE_V2_RATE_1x
   76 #define AGP_MODE_RATE_2x                AGP_MODE_V2_RATE_2x
   77 #define AGP_MODE_RATE_4x                AGP_MODE_V2_RATE_4x
   78 
   79 #define AGPIOC_BASE       'A'
   80 #define AGPIOC_INFO       _IOR (AGPIOC_BASE, 0, agp_info)
   81 #define AGPIOC_ACQUIRE    _IO  (AGPIOC_BASE, 1)
   82 #define AGPIOC_RELEASE    _IO  (AGPIOC_BASE, 2)
   83 #define AGPIOC_SETUP      _IOW (AGPIOC_BASE, 3, agp_setup)
   84 #if 0
   85 #define AGPIOC_RESERVE    _IOW (AGPIOC_BASE, 4, agp_region)
   86 #define AGPIOC_PROTECT    _IOW (AGPIOC_BASE, 5, agp_region)
   87 #endif
   88 #define AGPIOC_ALLOCATE   _IOWR(AGPIOC_BASE, 6, agp_allocate)
   89 #define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
   90 #define AGPIOC_BIND       _IOW (AGPIOC_BASE, 8, agp_bind)
   91 #define AGPIOC_UNBIND     _IOW (AGPIOC_BASE, 9, agp_unbind)
   92 
   93 typedef struct _agp_version {
   94         uint16_t major;
   95         uint16_t minor;
   96 } agp_version;
   97 
   98 typedef struct _agp_info {
   99         agp_version version;    /* version of the driver        */
  100         uint32_t bridge_id;     /* bridge vendor/device         */
  101         uint32_t agp_mode;      /* mode info of bridge          */
  102         off_t aper_base;        /* base of aperture             */
  103         size_t aper_size;       /* size of aperture             */
  104         size_t pg_total;        /* max pages (swap + system)    */
  105         size_t pg_system;       /* max pages (system)           */
  106         size_t pg_used;         /* current pages used           */
  107 } agp_info;
  108 
  109 typedef struct _agp_setup {
  110         uint32_t agp_mode;              /* mode info of bridge          */
  111 } agp_setup;
  112 
  113 #if 0
  114 /*
  115  * The "prot" down below needs still a "sleep" flag somehow ...
  116  */
  117 typedef struct _agp_segment {
  118         off_t pg_start;         /* starting page to populate    */
  119         size_t pg_count;        /* number of pages              */
  120         int prot;               /* prot flags for mmap          */
  121 } agp_segment;
  122 
  123 typedef struct _agp_region {
  124         pid_t pid;              /* pid of process               */
  125         size_t seg_count;       /* number of segments           */
  126         struct _agp_segment *seg_list;
  127 } agp_region;
  128 #endif
  129 
  130 typedef struct _agp_allocate {
  131         int key;                /* tag of allocation            */
  132         size_t pg_count;        /* number of pages              */
  133         uint32_t type;          /* 0 == normal, other devspec   */
  134         uint32_t physical;      /* device specific (some devices
  135                                  * need a phys address of the
  136                                  * actual page behind the gatt
  137                                  * table)                        */
  138 } agp_allocate;
  139 
  140 typedef struct _agp_bind {
  141         int key;                /* tag of allocation            */
  142         off_t pg_start;         /* starting page to populate    */
  143 } agp_bind;
  144 
  145 typedef struct _agp_unbind {
  146         int key;                /* tag of allocation            */
  147         uint32_t priority;      /* priority for paging out      */
  148 } agp_unbind;
  149 
  150 #endif /* !_SYS_AGPIO_H_ */

Cache object: 29d4126866bc8a7dc1c48cb6479837a5


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