1 /* $OpenBSD: conf.c,v 1.18 2024/06/11 09:21:32 jsg Exp $ */
2
3 /*
4 * Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Charles Hannum.
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/device.h>
35 #include <sys/disklabel.h>
36 #include <sys/ioctl.h>
37 #include <sys/tty.h>
38
39 #include <machine/conf.h>
40
41 #include "wd.h"
42 bdev_decl(wd);
43 #include "sd.h"
44 #include "cd.h"
45 #include "uk.h"
46 #include "vnd.h"
47 #include "rd.h"
48
49 struct bdevsw bdevsw[] =
50 {
51 bdev_disk_init(NWD,wd), /* 0: ST506/ESDI/IDE disk */
52 bdev_swap_init(1,sw), /* 1: swap pseudo-device */
53 bdev_notdef(), /* 2: was floppy diskette */
54 bdev_notdef(), /* 3 */
55 bdev_disk_init(NSD,sd), /* 4: SCSI disk */
56 bdev_notdef(), /* 5: was: SCSI tape */
57 bdev_disk_init(NCD,cd), /* 6: SCSI CD-ROM */
58 bdev_notdef(), /* 7 */
59 bdev_disk_init(NRD,rd), /* 8: ram disk driver */
60 bdev_notdef(), /* 9 */
61 bdev_notdef(), /* 10 */
62 bdev_notdef(), /* 11 */
63 bdev_notdef(), /* 12 */
64 bdev_notdef(), /* 13 */
65 bdev_disk_init(NVND,vnd), /* 14: vnode disk driver */
66 bdev_notdef(), /* 15: was: Sony CD-ROM */
67 bdev_notdef(), /* 16: was: concatenated disk driver */
68 bdev_notdef(), /* 17 */
69 bdev_notdef(), /* 18 */
70 };
71 int nblkdev = nitems(bdevsw);
72
73 #define mmread mmrw
74 #define mmwrite mmrw
75 cdev_decl(mm);
76 cdev_decl(wd);
77 #include "bio.h"
78 #include "pty.h"
79 #include "com.h"
80 cdev_decl(com);
81 #include "lpt.h"
82 cdev_decl(lpt);
83 #include "ch.h"
84 #include "bpfilter.h"
85 #include "tun.h"
86 #include "audio.h"
87 #include "video.h"
88 #include "midi.h"
89 #include "ksyms.h"
90 #include "kstat.h"
91 #include "usb.h"
92 #include "uhid.h"
93 #include "fido.h"
94 #include "ujoy.h"
95 #include "ugen.h"
96 #include "ulpt.h"
97 #include "ucom.h"
98 #include "radio.h"
99 #include "drm.h"
100
101 #include "wsdisplay.h"
102 #include "wskbd.h"
103 #include "wsmouse.h"
104 #include "wsmux.h"
105
106 #ifdef USER_PCICONF
107 #include "pci.h"
108 cdev_decl(pci);
109 #endif
110
111 #include "dt.h"
112 #include "pf.h"
113 #include "hotplug.h"
114 #include "vscsi.h"
115 #include "pppx.h"
116 #include "fuse.h"
117 #include "openprom.h"
118 #include "gpio.h"
119 #include "ipmi.h"
120
121 struct cdevsw cdevsw[] =
122 {
123 cdev_cn_init(1,cn), /* 0: virtual console */
124 cdev_ctty_init(1,ctty), /* 1: controlling terminal */
125 cdev_mm_init(1,mm), /* 2: /dev/{null,mem,kmem,...} */
126 cdev_disk_init(NWD,wd), /* 3: ST506/ESDI/IDE disk */
127 cdev_notdef(), /* 4 was /dev/drum */
128 cdev_tty_init(NPTY,pts), /* 5: pseudo-tty slave */
129 cdev_ptc_init(NPTY,ptc), /* 6: pseudo-tty master */
130 cdev_log_init(1,log), /* 7: /dev/klog */
131 cdev_tty_init(NCOM,com), /* 8: serial port */
132 cdev_notdef(), /* 9: was floppy disk */
133 cdev_notdef(), /* 10 */
134 cdev_notdef(), /* 11: Sony CD-ROM */
135 cdev_wsdisplay_init(NWSDISPLAY, /* 12: frame buffers, etc. */
136 wsdisplay),
137 cdev_disk_init(NSD,sd), /* 13: SCSI disk */
138 cdev_notdef(), /* 14: was: SCSI tape */
139 cdev_disk_init(NCD,cd), /* 15: SCSI CD-ROM */
140 cdev_lpt_init(NLPT,lpt), /* 16: parallel printer */
141 cdev_ch_init(NCH,ch), /* 17: SCSI autochanger */
142 cdev_notdef(), /* 18: was: concatenated disk driver */
143 cdev_notdef(), /* 19 */
144 cdev_uk_init(NUK,uk), /* 20: unknown SCSI */
145 cdev_notdef(), /* 21 */
146 cdev_fd_init(1,filedesc), /* 22: file descriptor pseudo-device */
147 cdev_bpf_init(NBPFILTER,bpf), /* 23: Berkeley packet filter */
148 cdev_notdef(), /* 24 */
149 cdev_notdef(), /* 25 */
150 cdev_notdef(), /* 26 */
151 cdev_notdef(), /* 27 */
152 cdev_notdef(), /* 28 was LKM */
153 cdev_notdef(), /* 29 */
154 cdev_dt_init(NDT,dt), /* 30: dynamic tracer */
155 cdev_notdef(), /* 31 */
156 cdev_notdef(), /* 32 */
157 cdev_notdef(), /* 33 */
158 cdev_notdef(), /* 34 */
159 cdev_notdef(), /* 35: Microsoft mouse */
160 cdev_notdef(), /* 36: Logitech mouse */
161 cdev_notdef(), /* 37: Extended PS/2 mouse */
162 cdev_notdef(), /* 38: was: Cyclom serial port */
163 cdev_notdef(), /* 39: Mitsumi CD-ROM */
164 cdev_tun_init(NTUN,tun), /* 40: network tunnel */
165 cdev_disk_init(NVND,vnd), /* 41: vnode disk driver */
166 cdev_audio_init(NAUDIO,audio), /* 42: generic audio I/O */
167 cdev_notdef(), /* 43 */
168 cdev_video_init(NVIDEO,video), /* 44: generic video I/O */
169 cdev_random_init(1,random), /* 45: random data source */
170 cdev_notdef(), /* 46 */
171 cdev_disk_init(NRD,rd), /* 47: ram disk driver */
172 cdev_notdef(), /* 48 */
173 cdev_notdef(), /* 49: Bt848 video capture device */
174 cdev_ksyms_init(NKSYMS,ksyms), /* 50: Kernel symbols device */
175 cdev_kstat_init(NKSTAT,kstat), /* 51: kernel statistics */
176 cdev_midi_init(NMIDI,midi), /* 52: MIDI I/O */
177 cdev_notdef(), /* 53 was: sequencer I/O */
178 cdev_notdef(), /* 54 was: RAIDframe disk driver */
179 cdev_notdef(), /* 55: */
180 /* The following slots are reserved for isdn4bsd. */
181 cdev_notdef(), /* 56: i4b main device */
182 cdev_notdef(), /* 57: i4b control device */
183 cdev_notdef(), /* 58: i4b raw b-channel access */
184 cdev_notdef(), /* 59: i4b trace device */
185 cdev_notdef(), /* 60: i4b phone device */
186 /* End of reserved slots for isdn4bsd. */
187 cdev_usb_init(NUSB,usb), /* 61: USB controller */
188 cdev_usbdev_init(NUHID,uhid), /* 62: USB generic HID */
189 cdev_usbdev_init(NUGEN,ugen), /* 63: USB generic driver */
190 cdev_ulpt_init(NULPT,ulpt), /* 64: USB printers */
191 cdev_notdef(), /* 65: urio */
192 cdev_tty_init(NUCOM,ucom), /* 66: USB tty */
193 cdev_mouse_init(NWSKBD, wskbd), /* 67: keyboards */
194 cdev_mouse_init(NWSMOUSE, /* 68: mice */
195 wsmouse),
196 cdev_mouse_init(NWSMUX, wsmux), /* 69: ws multiplexor */
197 cdev_openprom_init(NOPENPROM,openprom), /* 70: /dev/openprom */
198 cdev_notdef(), /* 71: was: Cyclades-Z serial port */
199 #ifdef USER_PCICONF
200 cdev_pci_init(NPCI,pci), /* 72: PCI user */
201 #else
202 cdev_notdef(),
203 #endif
204 cdev_pf_init(NPF,pf), /* 73: packet filter */
205 cdev_notdef(), /* 74: ALTQ (deprecated) */
206 cdev_notdef(),
207 cdev_radio_init(NRADIO, radio), /* 76: generic radio I/O */
208 cdev_notdef(), /* 77: was USB scanners */
209 cdev_notdef(), /* 78: was: system call tracing */
210 cdev_bio_init(NBIO,bio), /* 79: ioctl tunnel */
211 cdev_notdef(), /* 80 */
212 cdev_ptm_init(NPTY,ptm), /* 81: pseudo-tty ptm device */
213 cdev_hotplug_init(NHOTPLUG,hotplug), /* 82: devices hot plugging */
214 cdev_notdef(), /* 83: apm */
215 cdev_notdef(), /* 84 */
216 cdev_notdef(), /* 85 */
217 cdev_notdef(), /* 86 */
218 cdev_drm_init(NDRM,drm), /* 87: drm */
219 cdev_gpio_init(NGPIO,gpio), /* 88: GPIO interface */
220 cdev_vscsi_init(NVSCSI,vscsi), /* 89: vscsi */
221 cdev_disk_init(1,diskmap), /* 90: disk mapper */
222 cdev_pppx_init(NPPPX,pppx), /* 91: pppx */
223 cdev_fuse_init(NFUSE,fuse), /* 92: fuse */
224 cdev_tun_init(NTUN,tap), /* 93: Ethernet network tunnel */
225 cdev_notdef(), /* 94 */
226 cdev_notdef(), /* 95 */
227 cdev_ipmi_init(NIPMI,ipmi), /* 96: ipmi */
228 cdev_notdef(), /* 97: was switch(4) */
229 cdev_fido_init(NFIDO,fido), /* 98: FIDO/U2F security key */
230 cdev_pppx_init(NPPPX,pppac), /* 99: PPP Access Concentrator */
231 cdev_ujoy_init(NUJOY,ujoy), /* 100: USB joystick/gamecontroller */
232 };
233 int nchrdev = nitems(cdevsw);
234
235 int mem_no = 2; /* major device number of memory special file */
236
237 /*
238 * Swapdev is a fake device implemented
239 * in sw.c used only internally to get to swstrategy.
240 * It cannot be provided to the users, because the
241 * swstrategy routine munches the b_dev and b_blkno entries
242 * before calling the appropriate driver. This would horribly
243 * confuse, e.g. the hashing routines. Instead, /dev/drum is
244 * provided as a character (raw) device.
245 */
246 dev_t swapdev = makedev(1, 0);
247
248 /*
249 * Returns true if dev is /dev/mem or /dev/kmem.
250 */
251 int
iskmemdev(dev_t dev)252 iskmemdev(dev_t dev)
253 {
254
255 return (major(dev) == mem_no && minor(dev) < 2);
256 }
257
258 /*
259 * Returns true if dev is /dev/zero.
260 */
261 int
iszerodev(dev_t dev)262 iszerodev(dev_t dev)
263 {
264
265 return (major(dev) == mem_no && minor(dev) == 12);
266 }
267
268 dev_t
getnulldev(void)269 getnulldev(void)
270 {
271 return makedev(mem_no, 2);
272 }
273
274 const int chrtoblktbl[] = {
275 /*VCHR*/ /*VBLK*/
276 /* 0 */ NODEV,
277 /* 1 */ NODEV,
278 /* 2 */ NODEV,
279 /* 3 */ 0, /* wd */
280 /* 4 */ NODEV,
281 /* 5 */ NODEV,
282 /* 6 */ NODEV,
283 /* 7 */ NODEV,
284 /* 8 */ NODEV,
285 /* 9 */ NODEV, /* was fd */
286 /* 10 */ NODEV,
287 /* 11 */ NODEV,
288 /* 12 */ NODEV,
289 /* 13 */ 4, /* sd */
290 /* 14 */ NODEV,
291 /* 15 */ 6, /* cd */
292 /* 16 */ NODEV,
293 /* 17 */ NODEV,
294 /* 18 */ NODEV,
295 /* 19 */ NODEV,
296 /* 20 */ NODEV,
297 /* 21 */ NODEV,
298 /* 22 */ NODEV,
299 /* 23 */ NODEV,
300 /* 24 */ NODEV,
301 /* 25 */ NODEV,
302 /* 26 */ NODEV,
303 /* 27 */ NODEV,
304 /* 28 */ NODEV,
305 /* 29 */ NODEV,
306 /* 30 */ NODEV,
307 /* 31 */ NODEV,
308 /* 32 */ NODEV,
309 /* 33 */ NODEV,
310 /* 34 */ NODEV,
311 /* 35 */ NODEV,
312 /* 36 */ NODEV,
313 /* 37 */ NODEV,
314 /* 38 */ NODEV,
315 /* 39 */ NODEV,
316 /* 40 */ NODEV,
317 /* 41 */ 14, /* vnd */
318 /* 42 */ NODEV,
319 /* 43 */ NODEV,
320 /* 44 */ NODEV,
321 /* 45 */ NODEV,
322 /* 46 */ NODEV,
323 /* 47 */ 8, /* rd */
324 };
325
326 const int nchrtoblktbl = nitems(chrtoblktbl);
327
328 /*
329 * In order to map BSD bdev numbers of disks to their BIOS equivalents
330 * we use several heuristics, one being using checksums of the first
331 * few blocks of a disk to get a signature we can match with /boot's
332 * computed signatures. To know where from to read, we must provide a
333 * disk driver name -> bdev major number table, which follows.
334 * Note: floppies are not included as those are differentiated by the BIOS.
335 */
336 int findblkmajor(struct device *dv);
337 dev_t dev_rawpart(struct device *); /* XXX */
338
339 dev_t
dev_rawpart(struct device * dv)340 dev_rawpart(struct device *dv)
341 {
342 int majdev;
343
344 majdev = findblkmajor(dv);
345
346 switch (majdev) {
347 /* add here any device you want to be checksummed on boot */
348 case 0:
349 case 4:
350 return (MAKEDISKDEV(majdev, dv->dv_unit, RAW_PART));
351 break;
352 default:
353 ;
354 }
355
356 return (NODEV);
357 }
358