sys/sys/device.h

   1 /*
   2  * Copyright (c) 2003,2004 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   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  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sys/sys/device.h,v 1.4 2006/02/17 19:18:07 dillon Exp $
  35  */
  36
  37 #ifndef _SYS_DEVICE_H_
  38 #define _SYS_DEVICE_H_
  39
  40 #ifndef _SYS_MSGPORT_H_
  41 #include <sys/msgport.h>
  42 #endif
  43
  44 /*
  45  * This structure is at the base of every CDEVSW port message
  46  */
  47 struct cdevmsg  {
  48     lwkt_msg    msg;
  49     dev_t       dev;
  50 };
  51
  52 /*
  53  * int d_open(dev_t dev, int oflags, int devtype, thread_t td)
  54  */
  55 struct cdevmsg_open {
  56     struct cdevmsg msg;
  57     int         oflags;
  58     int         devtype;
  59     struct thread *td;
  60 };
  61
  62 /*
  63  * int d_close(dev_t dev, int fflag, int devtype, thread_t td)
  64  */
  65 struct cdevmsg_close {
  66     struct cdevmsg msg;
  67     int         fflag;
  68     int         devtype;
  69     struct thread *td;
  70 };
  71
  72 /*
  73  * void d_strategy(dev_t dev, struct bio *bio)
  74  */
  75 struct cdevmsg_strategy {
  76     struct cdevmsg msg;
  77     struct bio  *bio;
  78 };
  79
  80 /*
  81  * int d_ioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, thread_t td)
  82  */
  83 struct cdevmsg_ioctl {
  84     struct cdevmsg msg;
  85     u_long      cmd;
  86     caddr_t     data;
  87     int         fflag;
  88     struct thread *td;
  89 };
  90
  91 /*
  92  * void d_dump(dev_t dev)
  93  */
  94 struct cdevmsg_dump {
  95     struct cdevmsg msg;
  96     u_int count;
  97     u_int blkno;
  98     u_int secsize;
  99 };
 100
 101 /*
 102  * int d_psize(dev_t dev)
 103  */
 104 struct cdevmsg_psize {
 105     struct cdevmsg msg;
 106     int         result;
 107 };
 108
 109 /*
 110  * int d_read(dev_t dev, struct uio *uio, int ioflag)
 111  */
 112 struct cdevmsg_read {
 113     struct cdevmsg msg;
 114     struct uio  *uio;
 115     int         ioflag;
 116 };
 117
 118 /*
 119  * int d_write(dev_t dev, struct uio *uio, int ioflag)
 120  */
 121 struct cdevmsg_write {
 122     struct cdevmsg msg;
 123     struct uio  *uio;
 124     int         ioflag;
 125 };
 126
 127 /*
 128  * int d_poll(dev_t dev, int events, thread_t td)
 129  */
 130 struct cdevmsg_poll {
 131     struct cdevmsg msg;
 132     int         events;
 133     struct thread *td;
 134 };
 135
 136 /*
 137  * int d_kqfilter(dev_t dev, struct knote *kn)
 138  */
 139 struct cdevmsg_kqfilter {
 140     struct cdevmsg msg;
 141     struct knote *kn;
 142     int         result;
 143 };
 144
 145 /*
 146  * int d_mmap(dev_t dev, vm_offset_t offset, int nprot)
 147  */
 148 struct cdevmsg_mmap {
 149     struct cdevmsg msg;
 150     vm_offset_t offset;
 151     int         nprot;
 152     int         result; /* page number */
 153 };
 154
 155 union cdevallmsg {
 156     struct lwkt_msg             am_lmsg;
 157     struct cdevmsg              am_msg;
 158     struct cdevmsg_open         am_open;
 159     struct cdevmsg_close        am_close;
 160     struct cdevmsg_strategy     am_strategy;
 161     struct cdevmsg_ioctl        am_ioctl;
 162     struct cdevmsg_dump         am_dump;
 163     struct cdevmsg_psize        am_psize;
 164     struct cdevmsg_read         am_read;
 165     struct cdevmsg_write        am_write;
 166     struct cdevmsg_poll         am_poll;
 167     struct cdevmsg_kqfilter     am_kqfilter;
 168     struct cdevmsg_mmap         am_mmap;
 169 };
 170
 171 typedef union cdevallmsg *cdevallmsg_t;
 172 typedef struct cdevmsg          *cdevmsg_t;
 173 typedef struct cdevmsg_open     *cdevmsg_open_t;
 174 typedef struct cdevmsg_close    *cdevmsg_close_t;
 175 typedef struct cdevmsg_strategy *cdevmsg_strategy_t;
 176 typedef struct cdevmsg_ioctl    *cdevmsg_ioctl_t;
 177 typedef struct cdevmsg_dump     *cdevmsg_dump_t;
 178 typedef struct cdevmsg_psize    *cdevmsg_psize_t;
 179 typedef struct cdevmsg_read     *cdevmsg_read_t;
 180 typedef struct cdevmsg_write    *cdevmsg_write_t;
 181 typedef struct cdevmsg_poll     *cdevmsg_poll_t;
 182 typedef struct cdevmsg_kqfilter *cdevmsg_kqfilter_t;
 183 typedef struct cdevmsg_mmap     *cdevmsg_mmap_t;
 184
 185 #define CDEV_CMD_OPEN           (MSG_CMD_CDEV|0x0001)
 186 #define CDEV_CMD_CLOSE          (MSG_CMD_CDEV|0x0002)
 187 #define CDEV_CMD_STRATEGY       (MSG_CMD_CDEV|0x0003)
 188 #define CDEV_CMD_IOCTL          (MSG_CMD_CDEV|0x0004)
 189 #define CDEV_CMD_DUMP           (MSG_CMD_CDEV|0x0005)
 190 #define CDEV_CMD_PSIZE          (MSG_CMD_CDEV|0x0006)
 191 #define CDEV_CMD_READ           (MSG_CMD_CDEV|0x0007)
 192 #define CDEV_CMD_WRITE          (MSG_CMD_CDEV|0x0008)
 193 #define CDEV_CMD_POLL           (MSG_CMD_CDEV|0x0009)
 194 #define CDEV_CMD_KQFILTER       (MSG_CMD_CDEV|0x000A)
 195 #define CDEV_CMD_MMAP           (MSG_CMD_CDEV|0x000B)
 196
 197 #ifdef _KERNEL
 198
 199 struct disk;
 200
 201 const char *dev_dname(dev_t dev);
 202 struct lwkt_port *dev_dport(dev_t dev);
 203 int dev_dflags(dev_t dev);
 204 int dev_dmaj(dev_t dev);
 205 int dev_dopen(dev_t dev, int oflags, int devtype, struct thread *td);
 206 int dev_dclose(dev_t dev, int fflag, int devtype, struct thread *td);
 207 void dev_dstrategy(dev_t dev, struct bio *bio);
 208 void dev_dstrategy_chain(dev_t dev, struct bio *bio);
 209 int dev_dioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td);
 210 int dev_ddump(dev_t dev);
 211 int dev_dpsize(dev_t dev);
 212 int dev_dread(dev_t dev, struct uio *uio, int ioflag);
 213 int dev_dwrite(dev_t dev, struct uio *uio, int ioflag);
 214 int dev_dpoll(dev_t dev, int events, struct thread *td);
 215 int dev_dkqfilter(dev_t dev, struct knote *kn);
 216 int dev_dmmap(dev_t dev, vm_offset_t offset, int nprot);
 217
 218 #endif
 219
 220 #endif
 221