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1 | 13 | up20180614 | /* $NetBSD: conf.h,v 1.145 2014/07/25 07:56:14 dholland Exp $ */
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2 | |||
3 | /*-
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4 | * Copyright (c) 1990, 1993
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5 | * The Regents of the University of California. All rights reserved.
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6 | * (c) UNIX System Laboratories, Inc.
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7 | * All or some portions of this file are derived from material licensed
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8 | * to the University of California by American Telephone and Telegraph
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9 | * Co. or Unix System Laboratories, Inc. and are reproduced herein with
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10 | * the permission of UNIX System Laboratories, Inc.
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11 | *
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12 | * Redistribution and use in source and binary forms, with or without
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13 | * modification, are permitted provided that the following conditions
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14 | * are met:
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15 | * 1. Redistributions of source code must retain the above copyright
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16 | * notice, this list of conditions and the following disclaimer.
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17 | * 2. Redistributions in binary form must reproduce the above copyright
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18 | * notice, this list of conditions and the following disclaimer in the
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19 | * documentation and/or other materials provided with the distribution.
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20 | * 3. Neither the name of the University nor the names of its contributors
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21 | * may be used to endorse or promote products derived from this software
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22 | * without specific prior written permission.
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23 | *
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24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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34 | * SUCH DAMAGE.
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35 | *
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36 | * @(#)conf.h 8.5 (Berkeley) 1/9/95
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37 | */
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38 | |||
39 | #ifndef _SYS_CONF_H_
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40 | #define _SYS_CONF_H_
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41 | |||
42 | /*
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43 | * Definitions of device driver entry switches
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44 | */
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45 | |||
46 | #include <sys/queue.h> |
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47 | #include <sys/device_if.h> |
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48 | |||
49 | struct buf;
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50 | struct knote;
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51 | struct lwp;
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52 | struct tty;
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53 | struct uio;
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54 | struct vnode;
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55 | |||
56 | /*
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57 | * Types for d_flag
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58 | */
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59 | #define D_OTHER 0x0000 |
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60 | #define D_TAPE 0x0001 |
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61 | #define D_DISK 0x0002 |
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62 | #define D_TTY 0x0003 |
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63 | #define D_TYPEMASK 0x00ff |
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64 | #define D_MPSAFE 0x0100 |
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65 | #define D_NEGOFFSAFE 0x0200 |
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66 | |||
67 | /*
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68 | * Block device switch table
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69 | */
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70 | struct bdevsw {
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71 | int (*d_open)(dev_t, int, int, struct lwp *); |
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72 | int (*d_close)(dev_t, int, int, struct lwp *); |
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73 | void (*d_strategy)(struct buf *); |
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74 | int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *); |
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75 | int (*d_dump)(dev_t, daddr_t, void *, size_t); |
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76 | int (*d_psize)(dev_t);
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77 | int (*d_discard)(dev_t, off_t, off_t);
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78 | int d_flag;
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79 | }; |
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80 | |||
81 | /*
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82 | * Character device switch table
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83 | */
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84 | struct cdevsw {
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85 | int (*d_open)(dev_t, int, int, struct lwp *); |
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86 | int (*d_close)(dev_t, int, int, struct lwp *); |
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87 | int (*d_read)(dev_t, struct uio *, int); |
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88 | int (*d_write)(dev_t, struct uio *, int); |
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89 | int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *); |
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90 | void (*d_stop)(struct tty *, int); |
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91 | struct tty * (*d_tty)(dev_t);
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92 | int (*d_poll)(dev_t, int, struct lwp *); |
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93 | paddr_t (*d_mmap)(dev_t, off_t, int);
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94 | int (*d_kqfilter)(dev_t, struct knote *); |
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95 | int (*d_discard)(dev_t, off_t, off_t);
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96 | int d_flag;
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97 | }; |
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98 | |||
99 | #ifdef _KERNEL
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100 | |||
101 | #include <sys/mutex.h> |
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102 | extern kmutex_t device_lock;
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103 | |||
104 | int devsw_attach(const char *, const struct bdevsw *, devmajor_t *, |
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105 | const struct cdevsw *, devmajor_t *); |
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106 | int devsw_detach(const struct bdevsw *, const struct cdevsw *); |
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107 | const struct bdevsw *bdevsw_lookup(dev_t); |
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108 | const struct cdevsw *cdevsw_lookup(dev_t); |
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109 | devmajor_t bdevsw_lookup_major(const struct bdevsw *); |
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110 | devmajor_t cdevsw_lookup_major(const struct cdevsw *); |
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111 | |||
112 | #define dev_type_open(n) int n (dev_t, int, int, struct lwp *) |
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113 | #define dev_type_close(n) int n (dev_t, int, int, struct lwp *) |
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114 | #define dev_type_read(n) int n (dev_t, struct uio *, int) |
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115 | #define dev_type_write(n) int n (dev_t, struct uio *, int) |
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116 | #define dev_type_ioctl(n) \
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117 | int n (dev_t, u_long, void *, int, struct lwp *) |
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118 | #define dev_type_stop(n) void n (struct tty *, int) |
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119 | #define dev_type_tty(n) struct tty * n (dev_t) |
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120 | #define dev_type_poll(n) int n (dev_t, int, struct lwp *) |
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121 | #define dev_type_mmap(n) paddr_t n (dev_t, off_t, int) |
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122 | #define dev_type_strategy(n) void n (struct buf *) |
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123 | #define dev_type_dump(n) int n (dev_t, daddr_t, void *, size_t) |
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124 | #define dev_type_size(n) int n (dev_t) |
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125 | #define dev_type_kqfilter(n) int n (dev_t, struct knote *) |
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126 | #define dev_type_discard(n) int n (dev_t, off_t, off_t) |
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127 | |||
128 | #define noopen ((dev_type_open((*)))enodev)
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129 | #define noclose ((dev_type_close((*)))enodev)
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130 | #define noread ((dev_type_read((*)))enodev)
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131 | #define nowrite ((dev_type_write((*)))enodev)
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132 | #define noioctl ((dev_type_ioctl((*)))enodev)
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133 | #define nostop ((dev_type_stop((*)))enodev)
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134 | #define notty NULL |
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135 | #define nopoll seltrue
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136 | #define nommap ((dev_type_mmap((*)))enodev)
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137 | #define nodump ((dev_type_dump((*)))enodev)
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138 | #define nosize NULL |
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139 | #define nokqfilter seltrue_kqfilter
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140 | #define nodiscard ((dev_type_discard((*)))enodev)
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141 | |||
142 | #define nullopen ((dev_type_open((*)))nullop)
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143 | #define nullclose ((dev_type_close((*)))nullop)
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144 | #define nullread ((dev_type_read((*)))nullop)
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145 | #define nullwrite ((dev_type_write((*)))nullop)
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146 | #define nullioctl ((dev_type_ioctl((*)))nullop)
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147 | #define nullstop ((dev_type_stop((*)))nullop)
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148 | #define nullpoll ((dev_type_poll((*)))nullop)
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149 | #define nullmmap ((dev_type_mmap((*)))nullop)
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150 | #define nulldump ((dev_type_dump((*)))nullop)
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151 | #define nullkqfilter ((dev_type_kqfilter((*)))eopnotsupp)
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152 | #define nulldiscard ((dev_type_discard((*)))nullop)
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153 | |||
154 | /* device access wrappers. */
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155 | |||
156 | dev_type_open(bdev_open); |
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157 | dev_type_close(bdev_close); |
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158 | dev_type_strategy(bdev_strategy); |
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159 | dev_type_ioctl(bdev_ioctl); |
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160 | dev_type_dump(bdev_dump); |
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161 | dev_type_size(bdev_size); |
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162 | dev_type_discard(bdev_discard); |
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163 | |||
164 | dev_type_open(cdev_open); |
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165 | dev_type_close(cdev_close); |
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166 | dev_type_read(cdev_read); |
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167 | dev_type_write(cdev_write); |
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168 | dev_type_ioctl(cdev_ioctl); |
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169 | dev_type_stop(cdev_stop); |
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170 | dev_type_tty(cdev_tty); |
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171 | dev_type_poll(cdev_poll); |
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172 | dev_type_mmap(cdev_mmap); |
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173 | dev_type_kqfilter(cdev_kqfilter); |
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174 | dev_type_discard(cdev_discard); |
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175 | |||
176 | int cdev_type(dev_t);
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177 | int bdev_type(dev_t);
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178 | |||
179 | /* symbolic sleep message strings */
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180 | extern const char devopn[], devio[], devwait[], devin[], devout[]; |
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181 | extern const char devioc[], devcls[]; |
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182 | |||
183 | #endif /* _KERNEL */ |
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184 | |||
185 | /*
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186 | * Line discipline switch table
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187 | */
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188 | struct linesw {
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189 | const char *l_name; /* Linesw name */ |
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190 | |||
191 | LIST_ENTRY(linesw) l_list; |
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192 | u_int l_refcnt; /* locked by ttyldisc_list_slock */
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193 | int l_no; /* legacy discipline number (for TIOCGETD) */ |
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194 | |||
195 | int (*l_open) (dev_t, struct tty *); |
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196 | int (*l_close) (struct tty *, int); |
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197 | int (*l_read) (struct tty *, struct uio *, int); |
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198 | int (*l_write) (struct tty *, struct uio *, int); |
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199 | int (*l_ioctl) (struct tty *, u_long, void *, int, |
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200 | struct lwp *);
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201 | int (*l_rint) (int, struct tty *); |
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202 | int (*l_start) (struct tty *); |
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203 | int (*l_modem) (struct tty *, int); |
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204 | int (*l_poll) (struct tty *, int, struct lwp *); |
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205 | }; |
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206 | |||
207 | #ifdef _KERNEL
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208 | void ttyldisc_init(void); |
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209 | int ttyldisc_attach(struct linesw *); |
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210 | int ttyldisc_detach(struct linesw *); |
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211 | struct linesw *ttyldisc_lookup(const char *); |
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212 | struct linesw *ttyldisc_lookup_bynum(int); |
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213 | struct linesw *ttyldisc_default(void); |
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214 | void ttyldisc_release(struct linesw *); |
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215 | |||
216 | /* For those defining their own line disciplines: */
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217 | #define ttynodisc ((int (*)(dev_t, struct tty *))enodev) |
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218 | #define ttyerrclose ((int (*)(struct tty *, int))enodev) |
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219 | #define ttyerrio ((int (*)(struct tty *, struct uio *, int))enodev) |
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220 | #define ttyerrinput ((int (*)(int, struct tty *))enodev) |
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221 | #define ttyerrstart ((int (*)(struct tty *))enodev) |
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222 | |||
223 | int ttyerrpoll (struct tty *, int, struct lwp *); |
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224 | int ttynullioctl(struct tty *, u_long, void *, int, struct lwp *); |
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225 | |||
226 | int iskmemdev(dev_t);
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227 | int seltrue_kqfilter(dev_t, struct knote *); |
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228 | #endif
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229 | |||
230 | #ifdef _KERNEL
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231 | |||
232 | #define DEV_MEM 0 /* minor device 0 is physical memory */ |
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233 | #define DEV_KMEM 1 /* minor device 1 is kernel memory */ |
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234 | #define DEV_NULL 2 /* minor device 2 is EOF/rathole */ |
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235 | #ifdef COMPAT_16
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236 | #define _DEV_ZERO_oARM 3 /* reserved: old ARM /dev/zero minor */ |
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237 | #endif
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238 | #define DEV_ZERO 12 /* minor device 12 is '\0'/rathole */ |
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239 | |||
240 | enum devnode_class {
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241 | DEVNODE_DONTBOTHER, |
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242 | DEVNODE_SINGLE, |
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243 | DEVNODE_VECTOR, |
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244 | }; |
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245 | #define DEVNODE_FLAG_LINKZERO 0x01 /* create name -> name0 link */ |
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246 | #define DEVNODE_FLAG_ISMINOR0 0x02 /* vector[0] specifies minor */ |
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247 | #ifdef notyet
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248 | #define DEVNODE_FLAG_ISMINOR1 0x04 /* vector[1] specifies starting minor */ |
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249 | #endif
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250 | |||
251 | struct devsw_conv {
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252 | const char *d_name; |
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253 | devmajor_t d_bmajor; |
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254 | devmajor_t d_cmajor; |
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255 | |||
256 | /* information about /dev nodes related to the device */
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257 | enum devnode_class d_class;
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258 | int d_flags;
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259 | int d_vectdim[2]; |
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260 | }; |
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261 | |||
262 | void devsw_init(void); |
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263 | const char *devsw_blk2name(devmajor_t); |
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264 | const char *cdevsw_getname(devmajor_t); |
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265 | const char *bdevsw_getname(devmajor_t); |
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266 | devmajor_t devsw_name2blk(const char *, char *, size_t); |
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267 | devmajor_t devsw_name2chr(const char *, char *, size_t); |
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268 | dev_t devsw_chr2blk(dev_t); |
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269 | dev_t devsw_blk2chr(dev_t); |
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270 | |||
271 | void mm_init(void); |
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272 | #endif /* _KERNEL */ |
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273 | |||
274 | #ifdef _KERNEL
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275 | void setroot(device_t, int); |
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276 | void rootconf(void); |
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277 | void swapconf(void); |
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278 | #endif /* _KERNEL */ |
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279 | |||
280 | #endif /* !_SYS_CONF_H_ */ |