CoCalc -- devices.txt

GitHub Repository: torvalds/linux
Path: blob/master/Documentation/admin-guide/devices.txt
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1
   0		Unnamed devices (e.g. non-device mounts)
2
		  0 = reserved as null device number
3
		See block major 144, 145, 146 for expansion areas.
4

5
   1 char	Memory devices
6
		  1 = /dev/mem		Physical memory access
7
		  2 = /dev/kmem		OBSOLETE - replaced by /proc/kcore
8
		  3 = /dev/null		Null device
9
		  4 = /dev/port		I/O port access
10
		  5 = /dev/zero		Null byte source
11
		  6 = /dev/core		OBSOLETE - replaced by /proc/kcore
12
		  7 = /dev/full		Returns ENOSPC on write
13
		  8 = /dev/random	Nondeterministic random number gen.
14
		  9 = /dev/urandom	Faster, less secure random number gen.
15
		 10 = /dev/aio		Asynchronous I/O notification interface
16
		 11 = /dev/kmsg		Writes to this come out as printk's, reads
17
					export the buffered printk records.
18
		 12 = /dev/oldmem	OBSOLETE - replaced by /proc/vmcore
19

20
   1 block	RAM disk
21
		  0 = /dev/ram0		First RAM disk
22
		  1 = /dev/ram1		Second RAM disk
23
		    ...
24
		250 = /dev/initrd	Initial RAM disk
25

26
		Older kernels had /dev/ramdisk (1, 1) here.
27
		/dev/initrd refers to a RAM disk which was preloaded
28
		by the boot loader; newer kernels use /dev/ram0 for
29
		the initrd.
30

31
   2 char	Pseudo-TTY masters
32
		  0 = /dev/ptyp0	First PTY master
33
		  1 = /dev/ptyp1	Second PTY master
34
		    ...
35
		255 = /dev/ptyef	256th PTY master
36

37
		Pseudo-tty's are named as follows:
38
		* Masters are "pty", slaves are "tty";
39
		* the fourth letter is one of pqrstuvwxyzabcde indicating
40
		  the 1st through 16th series of 16 pseudo-ttys each, and
41
		* the fifth letter is one of 0123456789abcdef indicating
42
		  the position within the series.
43

44
		These are the old-style (BSD) PTY devices; Unix98
45
		devices are on major 128 and above and use the PTY
46
		master multiplex (/dev/ptmx) to acquire a PTY on
47
		demand.
48

49
   2 block	Floppy disks
50
		  0 = /dev/fd0		Controller 0, drive 0, autodetect
51
		  1 = /dev/fd1		Controller 0, drive 1, autodetect
52
		  2 = /dev/fd2		Controller 0, drive 2, autodetect
53
		  3 = /dev/fd3		Controller 0, drive 3, autodetect
54
		128 = /dev/fd4		Controller 1, drive 0, autodetect
55
		129 = /dev/fd5		Controller 1, drive 1, autodetect
56
		130 = /dev/fd6		Controller 1, drive 2, autodetect
57
		131 = /dev/fd7		Controller 1, drive 3, autodetect
58

59
		To specify format, add to the autodetect device number:
60
		  0 = /dev/fd?		Autodetect format
61
		  4 = /dev/fd?d360	5.25"  360K in a 360K  drive(1)
62
		 20 = /dev/fd?h360	5.25"  360K in a 1200K drive(1)
63
		 48 = /dev/fd?h410	5.25"  410K in a 1200K drive
64
		 64 = /dev/fd?h420	5.25"  420K in a 1200K drive
65
		 24 = /dev/fd?h720	5.25"  720K in a 1200K drive
66
		 80 = /dev/fd?h880	5.25"  880K in a 1200K drive(1)
67
		  8 = /dev/fd?h1200	5.25" 1200K in a 1200K drive(1)
68
		 40 = /dev/fd?h1440	5.25" 1440K in a 1200K drive(1)
69
		 56 = /dev/fd?h1476	5.25" 1476K in a 1200K drive
70
		 72 = /dev/fd?h1494	5.25" 1494K in a 1200K drive
71
		 92 = /dev/fd?h1600	5.25" 1600K in a 1200K drive(1)
72

73
		 12 = /dev/fd?u360	3.5"   360K Double Density(2)
74
		 16 = /dev/fd?u720	3.5"   720K Double Density(1)
75
		120 = /dev/fd?u800	3.5"   800K Double Density(2)
76
		 52 = /dev/fd?u820	3.5"   820K Double Density
77
		 68 = /dev/fd?u830	3.5"   830K Double Density
78
		 84 = /dev/fd?u1040	3.5"  1040K Double Density(1)
79
		 88 = /dev/fd?u1120	3.5"  1120K Double Density(1)
80
		 28 = /dev/fd?u1440	3.5"  1440K High Density(1)
81
		124 = /dev/fd?u1600	3.5"  1600K High Density(1)
82
		 44 = /dev/fd?u1680	3.5"  1680K High Density(3)
83
		 60 = /dev/fd?u1722	3.5"  1722K High Density
84
		 76 = /dev/fd?u1743	3.5"  1743K High Density
85
		 96 = /dev/fd?u1760	3.5"  1760K High Density
86
		116 = /dev/fd?u1840	3.5"  1840K High Density(3)
87
		100 = /dev/fd?u1920	3.5"  1920K High Density(1)
88
		 32 = /dev/fd?u2880	3.5"  2880K Extra Density(1)
89
		104 = /dev/fd?u3200	3.5"  3200K Extra Density
90
		108 = /dev/fd?u3520	3.5"  3520K Extra Density
91
		112 = /dev/fd?u3840	3.5"  3840K Extra Density(1)
92

93
		 36 = /dev/fd?CompaQ	Compaq 2880K drive; obsolete?
94

95
		(1) Autodetectable format
96
		(2) Autodetectable format in a Double Density (720K) drive only
97
		(3) Autodetectable format in a High Density (1440K) drive only
98

99
		NOTE: The letter in the device name (d, q, h or u)
100
		signifies the type of drive: 5.25" Double Density (d),
101
		5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
102
		(any model, u).	 The use of the capital letters D, H
103
		and E for the 3.5" models have been deprecated, since
104
		the drive type is insignificant for these devices.
105

106
   3 char	Pseudo-TTY slaves
107
		  0 = /dev/ttyp0	First PTY slave
108
		  1 = /dev/ttyp1	Second PTY slave
109
		    ...
110
		255 = /dev/ttyef	256th PTY slave
111

112
		These are the old-style (BSD) PTY devices; Unix98
113
		devices are on major 136 and above.
114

115
   3 block	First MFM, RLL and IDE hard disk/CD-ROM interface
116
		  0 = /dev/hda		Master: whole disk (or CD-ROM)
117
		 64 = /dev/hdb		Slave: whole disk (or CD-ROM)
118

119
		For partitions, add to the whole disk device number:
120
		  0 = /dev/hd?		Whole disk
121
		  1 = /dev/hd?1		First partition
122
		  2 = /dev/hd?2		Second partition
123
		    ...
124
		 63 = /dev/hd?63	63rd partition
125

126
		For Linux/i386, partitions 1-4 are the primary
127
		partitions, and 5 and above are logical partitions.
128
		Other versions of Linux use partitioning schemes
129
		appropriate to their respective architectures.
130

131
   4 char	TTY devices
132
		  0 = /dev/tty0		Current virtual console
133

134
		  1 = /dev/tty1		First virtual console
135
		    ...
136
		 63 = /dev/tty63	63rd virtual console
137
		 64 = /dev/ttyS0	First UART serial port
138
		    ...
139
		255 = /dev/ttyS191	192nd UART serial port
140

141
		UART serial ports refer to 8250/16450/16550 series devices.
142

143
		Older versions of the Linux kernel used this major
144
		number for BSD PTY devices.  As of Linux 2.1.115, this
145
		is no longer supported.	 Use major numbers 2 and 3.
146

147
   4 block	Aliases for dynamically allocated major devices to be used
148
		when its not possible to create the real device nodes
149
		because the root filesystem is mounted read-only.
150

151
		   0 = /dev/root
152

153
   5 char	Alternate TTY devices
154
		  0 = /dev/tty		Current TTY device
155
		  1 = /dev/console	System console
156
		  2 = /dev/ptmx		PTY master multiplex
157
		  3 = /dev/ttyprintk	User messages via printk TTY device
158
		 64 = /dev/cua0		Callout device for ttyS0
159
		    ...
160
		255 = /dev/cua191	Callout device for ttyS191
161

162
		(5,1) is /dev/console starting with Linux 2.1.71.  See
163
		the section on terminal devices for more information
164
		on /dev/console.
165

166
   6 char	Parallel printer devices
167
		  0 = /dev/lp0		Parallel printer on parport0
168
		  1 = /dev/lp1		Parallel printer on parport1
169
		    ...
170

171
		Current Linux kernels no longer have a fixed mapping
172
		between parallel ports and I/O addresses.  Instead,
173
		they are redirected through the parport multiplex layer.
174

175
   7 char	Virtual console capture devices
176
		  0 = /dev/vcs		Current vc text (glyph) contents
177
		  1 = /dev/vcs1		tty1 text (glyph) contents
178
		    ...
179
		 63 = /dev/vcs63	tty63 text (glyph) contents
180
		 64 = /dev/vcsu		Current vc text (unicode) contents
181
		65 = /dev/vcsu1		tty1 text (unicode) contents
182
		    ...
183
		127 = /dev/vcsu63	tty63 text (unicode) contents
184
		128 = /dev/vcsa		Current vc text/attribute (glyph) contents
185
		129 = /dev/vcsa1	tty1 text/attribute (glyph) contents
186
		    ...
187
		191 = /dev/vcsa63	tty63 text/attribute (glyph) contents
188

189
		NOTE: These devices permit both read and write access.
190

191
   7 block	Loopback devices
192
		  0 = /dev/loop0	First loop device
193
		  1 = /dev/loop1	Second loop device
194
		    ...
195

196
		The loop devices are used to mount filesystems not
197
		associated with block devices.	The binding to the
198
		loop devices is handled by mount(8) or losetup(8).
199

200
   8 block	SCSI disk devices (0-15)
201
		  0 = /dev/sda		First SCSI disk whole disk
202
		 16 = /dev/sdb		Second SCSI disk whole disk
203
		 32 = /dev/sdc		Third SCSI disk whole disk
204
		    ...
205
		240 = /dev/sdp		Sixteenth SCSI disk whole disk
206

207
		Partitions are handled in the same way as for IDE
208
		disks (see major number 3) except that the limit on
209
		partitions is 15.
210

211
   9 char	SCSI tape devices
212
		  0 = /dev/st0		First SCSI tape, mode 0
213
		  1 = /dev/st1		Second SCSI tape, mode 0
214
		    ...
215
		 32 = /dev/st0l		First SCSI tape, mode 1
216
		 33 = /dev/st1l		Second SCSI tape, mode 1
217
		    ...
218
		 64 = /dev/st0m		First SCSI tape, mode 2
219
		 65 = /dev/st1m		Second SCSI tape, mode 2
220
		    ...
221
		 96 = /dev/st0a		First SCSI tape, mode 3
222
		 97 = /dev/st1a		Second SCSI tape, mode 3
223
		      ...
224
		128 = /dev/nst0		First SCSI tape, mode 0, no rewind
225
		129 = /dev/nst1		Second SCSI tape, mode 0, no rewind
226
		    ...
227
		160 = /dev/nst0l	First SCSI tape, mode 1, no rewind
228
		161 = /dev/nst1l	Second SCSI tape, mode 1, no rewind
229
		    ...
230
		192 = /dev/nst0m	First SCSI tape, mode 2, no rewind
231
		193 = /dev/nst1m	Second SCSI tape, mode 2, no rewind
232
		    ...
233
		224 = /dev/nst0a	First SCSI tape, mode 3, no rewind
234
		225 = /dev/nst1a	Second SCSI tape, mode 3, no rewind
235
		    ...
236

237
		"No rewind" refers to the omission of the default
238
		automatic rewind on device close.  The MTREW or MTOFFL
239
		ioctl()'s can be used to rewind the tape regardless of
240
		the device used to access it.
241

242
   9 block	Metadisk (RAID) devices
243
		  0 = /dev/md0		First metadisk group
244
		  1 = /dev/md1		Second metadisk group
245
		    ...
246

247
		The metadisk driver is used to span a
248
		filesystem across multiple physical disks.
249

250
  10 char	Non-serial mice, misc features
251
		  0 = /dev/logibm	Logitech bus mouse
252
		  1 = /dev/psaux	PS/2-style mouse port
253
		  2 = /dev/inportbm	Microsoft Inport bus mouse
254
		  3 = /dev/atibm	ATI XL bus mouse
255
		  4 = /dev/jbm		J-mouse
256
		  4 = /dev/amigamouse	Amiga mouse (68k/Amiga)
257
		  5 = /dev/atarimouse	Atari mouse
258
		  6 = /dev/sunmouse	Sun mouse
259
		  7 = /dev/amigamouse1	Second Amiga mouse
260
		  8 = /dev/smouse	Simple serial mouse driver
261
		  9 = /dev/pc110pad	IBM PC-110 digitizer pad
262
		 10 = /dev/adbmouse	Apple Desktop Bus mouse
263
		 11 = /dev/vrtpanel	Vr41xx embedded touch panel
264
		 13 = /dev/vpcmouse	Connectix Virtual PC Mouse
265
		 14 = /dev/touchscreen/ucb1x00  UCB 1x00 touchscreen
266
		 15 = /dev/touchscreen/mk712	MK712 touchscreen
267
		128 = /dev/beep		Fancy beep device
268
		129 =
269
		130 = /dev/watchdog	Watchdog timer port
270
		131 = /dev/temperature	Machine internal temperature
271
		132 = /dev/hwtrap	Hardware fault trap
272
		133 = /dev/exttrp	External device trap
273
		134 = /dev/apm_bios	Advanced Power Management BIOS
274
		135 = /dev/rtc		Real Time Clock
275
		137 = /dev/vhci		Bluetooth virtual HCI driver
276
		139 = /dev/openprom	SPARC OpenBoot PROM
277
		140 = /dev/relay8	Berkshire Products Octal relay card
278
		141 = /dev/relay16	Berkshire Products ISO-16 relay card
279
		142 =
280
		143 = /dev/pciconf	PCI configuration space
281
		144 = /dev/nvram	Non-volatile configuration RAM
282
		145 = /dev/hfmodem	Soundcard shortwave modem control
283
		146 = /dev/graphics	Linux/SGI graphics device
284
		147 = /dev/opengl	Linux/SGI OpenGL pipe
285
		148 = /dev/gfx		Linux/SGI graphics effects device
286
		149 = /dev/input/mouse	Linux/SGI Irix emulation mouse
287
		150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
288
		151 = /dev/led		Front panel LEDs
289
		152 = /dev/kpoll	Kernel Poll Driver
290
		153 = /dev/mergemem	Memory merge device
291
		154 = /dev/pmu		Macintosh PowerBook power manager
292
		155 =
293
		156 = /dev/lcd		Front panel LCD display
294
		157 = /dev/ac		Applicom Intl Profibus card
295
		158 = /dev/nwbutton	Netwinder external button
296
		159 = /dev/nwdebug	Netwinder debug interface
297
		160 = /dev/nwflash	Netwinder flash memory
298
		161 = /dev/userdma	User-space DMA access
299
		162 = /dev/smbus	System Management Bus
300
		163 = /dev/lik		Logitech Internet Keyboard
301
		164 = /dev/ipmo		Intel Intelligent Platform Management
302
		165 = /dev/vmmon	VMware virtual machine monitor
303
		166 = /dev/i2o/ctl	I2O configuration manager
304
		167 = /dev/specialix_sxctl Specialix serial control
305
		168 = /dev/tcldrv	Technology Concepts serial control
306
		169 = /dev/specialix_rioctl Specialix RIO serial control
307
		170 = /dev/thinkpad/thinkpad	IBM Thinkpad devices
308
		171 = /dev/srripc	QNX4 API IPC manager
309
		172 = /dev/usemaclone	Semaphore clone device
310
		173 = /dev/ipmikcs	Intelligent Platform Management
311
		174 = /dev/uctrl	SPARCbook 3 microcontroller
312
		175 = /dev/agpgart	AGP Graphics Address Remapping Table
313
		176 = /dev/gtrsc	Gorgy Timing radio clock
314
		177 = /dev/cbm		Serial CBM bus
315
		178 = /dev/jsflash	JavaStation OS flash SIMM
316
		179 = /dev/xsvc		High-speed shared-mem/semaphore service
317
		180 = /dev/vrbuttons	Vr41xx button input device
318
		181 = /dev/toshiba	Toshiba laptop SMM support
319
		182 = /dev/perfctr	Performance-monitoring counters
320
		183 = /dev/hwrng	Generic random number generator
321
		184 = /dev/cpu/microcode CPU microcode update interface
322
		186 = /dev/atomicps	Atomic snapshot of process state data
323
		187 = /dev/irnet	IrNET device
324
		188 = /dev/smbusbios	SMBus BIOS
325
		189 = /dev/ussp_ctl	User space serial port control
326
		190 = /dev/crash	Mission Critical Linux crash dump facility
327
		191 = /dev/pcl181	<information missing>
328
		192 = /dev/nas_xbus	NAS xbus LCD/buttons access
329
		193 = /dev/d7s		SPARC 7-segment display
330
		194 = /dev/zkshim	Zero-Knowledge network shim control
331
		195 = /dev/elographics/e2201	Elographics touchscreen E271-2201
332
		196 = /dev/vfio/vfio	VFIO userspace driver interface
333
		197 = /dev/pxa3xx-gcu	PXA3xx graphics controller unit driver
334
		198 = /dev/sexec	Signed executable interface
335
		199 = /dev/scanners/cuecat :CueCat barcode scanner
336
		200 = /dev/net/tun	TAP/TUN network device
337
		201 = /dev/button/gulpb	Transmeta GULP-B buttons
338
		202 = /dev/emd/ctl	Enhanced Metadisk RAID (EMD) control
339
		203 = /dev/cuse		Cuse (character device in user-space)
340
		204 = /dev/video/em8300		EM8300 DVD decoder control
341
		205 = /dev/video/em8300_mv	EM8300 DVD decoder video
342
		206 = /dev/video/em8300_ma	EM8300 DVD decoder audio
343
		207 = /dev/video/em8300_sp	EM8300 DVD decoder subpicture
344
		208 = /dev/compaq/cpqphpc	Compaq PCI Hot Plug Controller
345
		209 = /dev/compaq/cpqrid	Compaq Remote Insight Driver
346
		210 = /dev/impi/bt	IMPI coprocessor block transfer
347
		211 = /dev/impi/smic	IMPI coprocessor stream interface
348
		212 = /dev/watchdogs/0	First watchdog device
349
		213 = /dev/watchdogs/1	Second watchdog device
350
		214 = /dev/watchdogs/2	Third watchdog device
351
		215 = /dev/watchdogs/3	Fourth watchdog device
352
		216 = /dev/fujitsu/apanel	Fujitsu/Siemens application panel
353
		217 = /dev/ni/natmotn		National Instruments Motion
354
		218 = /dev/kchuid	Inter-process chuid control
355
		219 = /dev/modems/mwave	MWave modem firmware upload
356
		220 = /dev/mptctl	Message passing technology (MPT) control
357
		221 = /dev/mvista/hssdsi	Montavista PICMG hot swap system driver
358
		222 = /dev/mvista/hasi		Montavista PICMG high availability
359
		223 = /dev/input/uinput		User level driver support for input
360
		224 = /dev/tpm		TCPA TPM driver
361
		225 = /dev/pps		Pulse Per Second driver
362
		226 = /dev/systrace	Systrace device
363
		227 = /dev/mcelog	X86_64 Machine Check Exception driver
364
		228 = /dev/hpet		HPET driver
365
		229 = /dev/fuse		Fuse (virtual filesystem in user-space)
366
		230 = /dev/midishare	MidiShare driver
367
		231 = /dev/snapshot	System memory snapshot device
368
		232 = /dev/kvm		Kernel-based virtual machine (hardware virtualization extensions)
369
		233 = /dev/kmview	View-OS A process with a view
370
		234 = /dev/btrfs-control	Btrfs control device
371
		235 = /dev/autofs	Autofs control device
372
		236 = /dev/mapper/control	Device-Mapper control device
373
		237 = /dev/loop-control Loopback control device
374
		238 = /dev/vhost-net	Host kernel accelerator for virtio net
375
		239 = /dev/uhid		User-space I/O driver support for HID subsystem
376
		240 = /dev/userio	Serio driver testing device
377
		241 = /dev/vhost-vsock	Host kernel driver for virtio vsock
378
		242 = /dev/rfkill	Turning off radio transmissions (rfkill)
379

380
		243-254			Reserved for local use
381
		255			Reserved for MISC_DYNAMIC_MINOR
382

383
  11 char	Raw keyboard device	(Linux/SPARC only)
384
		  0 = /dev/kbd		Raw keyboard device
385

386
  11 char	Serial Mux device	(Linux/PA-RISC only)
387
		  0 = /dev/ttyB0	First mux port
388
		  1 = /dev/ttyB1	Second mux port
389
		    ...
390

391
  11 block	SCSI CD-ROM devices
392
		  0 = /dev/scd0		First SCSI CD-ROM
393
		  1 = /dev/scd1		Second SCSI CD-ROM
394
		    ...
395

396
		The prefix /dev/sr (instead of /dev/scd) has been deprecated.
397

398
  12 char	QIC-02 tape
399
		  2 = /dev/ntpqic11	QIC-11, no rewind-on-close
400
		  3 = /dev/tpqic11	QIC-11, rewind-on-close
401
		  4 = /dev/ntpqic24	QIC-24, no rewind-on-close
402
		  5 = /dev/tpqic24	QIC-24, rewind-on-close
403
		  6 = /dev/ntpqic120	QIC-120, no rewind-on-close
404
		  7 = /dev/tpqic120	QIC-120, rewind-on-close
405
		  8 = /dev/ntpqic150	QIC-150, no rewind-on-close
406
		  9 = /dev/tpqic150	QIC-150, rewind-on-close
407

408
		The device names specified are proposed -- if there
409
		are "standard" names for these devices, please let me know.
410

411
  12 block
412

413
  13 char	Input core
414
		  0 = /dev/input/js0	First joystick
415
		  1 = /dev/input/js1	Second joystick
416
		    ...
417
		 32 = /dev/input/mouse0	First mouse
418
		 33 = /dev/input/mouse1	Second mouse
419
		    ...
420
		 63 = /dev/input/mice	Unified mouse
421
		 64 = /dev/input/event0	First event queue
422
		 65 = /dev/input/event1	Second event queue
423
		    ...
424

425
		Each device type has 5 bits (32 minors).
426

427
  13 block	Previously used for the XT disk (/dev/xdN)
428
		Deleted in kernel v3.9.
429

430
  14 char	Open Sound System (OSS)
431
		  0 = /dev/mixer	Mixer control
432
		  1 = /dev/sequencer	Audio sequencer
433
		  2 = /dev/midi00	First MIDI port
434
		  3 = /dev/dsp		Digital audio
435
		  4 = /dev/audio	Sun-compatible digital audio
436
		  6 =
437
		  7 = /dev/audioctl	SPARC audio control device
438
		  8 = /dev/sequencer2	Sequencer -- alternate device
439
		 16 = /dev/mixer1	Second soundcard mixer control
440
		 17 = /dev/patmgr0	Sequencer patch manager
441
		 18 = /dev/midi01	Second MIDI port
442
		 19 = /dev/dsp1		Second soundcard digital audio
443
		 20 = /dev/audio1	Second soundcard Sun digital audio
444
		 33 = /dev/patmgr1	Sequencer patch manager
445
		 34 = /dev/midi02	Third MIDI port
446
		 50 = /dev/midi03	Fourth MIDI port
447

448
  14 block
449

450
  15 char	Joystick
451
		  0 = /dev/js0		First analog joystick
452
		  1 = /dev/js1		Second analog joystick
453
		    ...
454
		128 = /dev/djs0		First digital joystick
455
		129 = /dev/djs1		Second digital joystick
456
		    ...
457
  15 block	Sony CDU-31A/CDU-33A CD-ROM
458
		  0 = /dev/sonycd	Sony CDU-31a CD-ROM
459

460
  16 char	Non-SCSI scanners
461
		  0 = /dev/gs4500	Genius 4500 handheld scanner
462

463
  16 block	GoldStar CD-ROM
464
		  0 = /dev/gscd		GoldStar CD-ROM
465

466
  17 char	OBSOLETE (was Chase serial card)
467
		  0 = /dev/ttyH0	First Chase port
468
		  1 = /dev/ttyH1	Second Chase port
469
		    ...
470
  17 block	Optics Storage CD-ROM
471
		  0 = /dev/optcd	Optics Storage CD-ROM
472

473
  18 char	OBSOLETE (was Chase serial card - alternate devices)
474
		  0 = /dev/cuh0		Callout device for ttyH0
475
		  1 = /dev/cuh1		Callout device for ttyH1
476
		    ...
477
  18 block	Sanyo CD-ROM
478
		  0 = /dev/sjcd		Sanyo CD-ROM
479

480
  19 block	"Double" compressed disk
481
		  0 = /dev/double0	First compressed disk
482
		    ...
483
		  7 = /dev/double7	Eighth compressed disk
484
		128 = /dev/cdouble0	Mirror of first compressed disk
485
		    ...
486
		135 = /dev/cdouble7	Mirror of eighth compressed disk
487

488
		See the Double documentation for the meaning of the
489
		mirror devices.
490

491
  20 block	Hitachi CD-ROM (under development)
492
		  0 = /dev/hitcd	Hitachi CD-ROM
493

494
  21 char	Generic SCSI access
495
		  0 = /dev/sg0		First generic SCSI device
496
		  1 = /dev/sg1		Second generic SCSI device
497
		    ...
498

499
		Most distributions name these /dev/sga, /dev/sgb...;
500
		this sets an unnecessary limit of 26 SCSI devices in
501
		the system and is counter to standard Linux
502
		device-naming practice.
503

504
  21 block	Acorn MFM hard drive interface
505
		  0 = /dev/mfma		First MFM drive whole disk
506
		 64 = /dev/mfmb		Second MFM drive whole disk
507

508
		This device is used on the ARM-based Acorn RiscPC.
509
		Partitions are handled the same way as for IDE disks
510
		(see major number 3).
511

512
  22 char	Digiboard serial card
513
		  0 = /dev/ttyD0	First Digiboard port
514
		  1 = /dev/ttyD1	Second Digiboard port
515
		    ...
516
  22 block	Second IDE hard disk/CD-ROM interface
517
		  0 = /dev/hdc		Master: whole disk (or CD-ROM)
518
		 64 = /dev/hdd		Slave: whole disk (or CD-ROM)
519

520
		Partitions are handled the same way as for the first
521
		interface (see major number 3).
522

523
  23 char	Digiboard serial card - alternate devices
524
		  0 = /dev/cud0		Callout device for ttyD0
525
		  1 = /dev/cud1		Callout device for ttyD1
526
		      ...
527
  23 block	Mitsumi proprietary CD-ROM
528
		  0 = /dev/mcd		Mitsumi CD-ROM
529

530
  24 char	Stallion serial card
531
		  0 = /dev/ttyE0	Stallion port 0 card 0
532
		  1 = /dev/ttyE1	Stallion port 1 card 0
533
		    ...
534
		 64 = /dev/ttyE64	Stallion port 0 card 1
535
		 65 = /dev/ttyE65	Stallion port 1 card 1
536
		      ...
537
		128 = /dev/ttyE128	Stallion port 0 card 2
538
		129 = /dev/ttyE129	Stallion port 1 card 2
539
		    ...
540
		192 = /dev/ttyE192	Stallion port 0 card 3
541
		193 = /dev/ttyE193	Stallion port 1 card 3
542
		    ...
543
  24 block	Sony CDU-535 CD-ROM
544
		  0 = /dev/cdu535	Sony CDU-535 CD-ROM
545

546
  25 char	Stallion serial card - alternate devices
547
		  0 = /dev/cue0		Callout device for ttyE0
548
		  1 = /dev/cue1		Callout device for ttyE1
549
		    ...
550
		 64 = /dev/cue64	Callout device for ttyE64
551
		 65 = /dev/cue65	Callout device for ttyE65
552
		    ...
553
		128 = /dev/cue128	Callout device for ttyE128
554
		129 = /dev/cue129	Callout device for ttyE129
555
		    ...
556
		192 = /dev/cue192	Callout device for ttyE192
557
		193 = /dev/cue193	Callout device for ttyE193
558
		      ...
559
  25 block	First Matsushita (Panasonic/SoundBlaster) CD-ROM
560
		  0 = /dev/sbpcd0	Panasonic CD-ROM controller 0 unit 0
561
		  1 = /dev/sbpcd1	Panasonic CD-ROM controller 0 unit 1
562
		  2 = /dev/sbpcd2	Panasonic CD-ROM controller 0 unit 2
563
		  3 = /dev/sbpcd3	Panasonic CD-ROM controller 0 unit 3
564

565
  26 char
566

567
  26 block	Second Matsushita (Panasonic/SoundBlaster) CD-ROM
568
		  0 = /dev/sbpcd4	Panasonic CD-ROM controller 1 unit 0
569
		  1 = /dev/sbpcd5	Panasonic CD-ROM controller 1 unit 1
570
		  2 = /dev/sbpcd6	Panasonic CD-ROM controller 1 unit 2
571
		  3 = /dev/sbpcd7	Panasonic CD-ROM controller 1 unit 3
572

573
  27 char	QIC-117 tape
574
		  0 = /dev/qft0		Unit 0, rewind-on-close
575
		  1 = /dev/qft1		Unit 1, rewind-on-close
576
		  2 = /dev/qft2		Unit 2, rewind-on-close
577
		  3 = /dev/qft3		Unit 3, rewind-on-close
578
		  4 = /dev/nqft0	Unit 0, no rewind-on-close
579
		  5 = /dev/nqft1	Unit 1, no rewind-on-close
580
		  6 = /dev/nqft2	Unit 2, no rewind-on-close
581
		  7 = /dev/nqft3	Unit 3, no rewind-on-close
582
		 16 = /dev/zqft0	Unit 0, rewind-on-close, compression
583
		 17 = /dev/zqft1	Unit 1, rewind-on-close, compression
584
		 18 = /dev/zqft2	Unit 2, rewind-on-close, compression
585
		 19 = /dev/zqft3	Unit 3, rewind-on-close, compression
586
		 20 = /dev/nzqft0	Unit 0, no rewind-on-close, compression
587
		 21 = /dev/nzqft1	Unit 1, no rewind-on-close, compression
588
		 22 = /dev/nzqft2	Unit 2, no rewind-on-close, compression
589
		 23 = /dev/nzqft3	Unit 3, no rewind-on-close, compression
590
		 32 = /dev/rawqft0	Unit 0, rewind-on-close, no file marks
591
		 33 = /dev/rawqft1	Unit 1, rewind-on-close, no file marks
592
		 34 = /dev/rawqft2	Unit 2, rewind-on-close, no file marks
593
		 35 = /dev/rawqft3	Unit 3, rewind-on-close, no file marks
594
		 36 = /dev/nrawqft0	Unit 0, no rewind-on-close, no file marks
595
		 37 = /dev/nrawqft1	Unit 1, no rewind-on-close, no file marks
596
		 38 = /dev/nrawqft2	Unit 2, no rewind-on-close, no file marks
597
		 39 = /dev/nrawqft3	Unit 3, no rewind-on-close, no file marks
598

599
  27 block	Third Matsushita (Panasonic/SoundBlaster) CD-ROM
600
		  0 = /dev/sbpcd8	Panasonic CD-ROM controller 2 unit 0
601
		  1 = /dev/sbpcd9	Panasonic CD-ROM controller 2 unit 1
602
		  2 = /dev/sbpcd10	Panasonic CD-ROM controller 2 unit 2
603
		  3 = /dev/sbpcd11	Panasonic CD-ROM controller 2 unit 3
604

605
  28 char	Stallion serial card - card programming
606
		  0 = /dev/staliomem0	First Stallion card I/O memory
607
		  1 = /dev/staliomem1	Second Stallion card I/O memory
608
		  2 = /dev/staliomem2	Third Stallion card I/O memory
609
		  3 = /dev/staliomem3	Fourth Stallion card I/O memory
610

611
  28 char	Atari SLM ACSI laser printer (68k/Atari)
612
		  0 = /dev/slm0		First SLM laser printer
613
		  1 = /dev/slm1		Second SLM laser printer
614
		    ...
615
  28 block	Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
616
		  0 = /dev/sbpcd12	Panasonic CD-ROM controller 3 unit 0
617
		  1 = /dev/sbpcd13	Panasonic CD-ROM controller 3 unit 1
618
		  2 = /dev/sbpcd14	Panasonic CD-ROM controller 3 unit 2
619
		  3 = /dev/sbpcd15	Panasonic CD-ROM controller 3 unit 3
620

621
  28 block	ACSI disk (68k/Atari)
622
		  0 = /dev/ada		First ACSI disk whole disk
623
		 16 = /dev/adb		Second ACSI disk whole disk
624
		 32 = /dev/adc		Third ACSI disk whole disk
625
		    ...
626
		240 = /dev/adp		16th ACSI disk whole disk
627

628
		Partitions are handled in the same way as for IDE
629
		disks (see major number 3) except that the limit on
630
		partitions is 15, like SCSI.
631

632
  29 char	Universal frame buffer
633
		  0 = /dev/fb0		First frame buffer
634
		  1 = /dev/fb1		Second frame buffer
635
		    ...
636
		 31 = /dev/fb31		32nd frame buffer
637

638
  29 block	Aztech/Orchid/Okano/Wearnes CD-ROM
639
		  0 = /dev/aztcd	Aztech CD-ROM
640

641
  30 char	iBCS-2 compatibility devices
642
		  0 = /dev/socksys	Socket access
643
		  1 = /dev/spx		SVR3 local X interface
644
		 32 = /dev/inet/ip	Network access
645
		 33 = /dev/inet/icmp
646
		 34 = /dev/inet/ggp
647
		 35 = /dev/inet/ipip
648
		 36 = /dev/inet/tcp
649
		 37 = /dev/inet/egp
650
		 38 = /dev/inet/pup
651
		 39 = /dev/inet/udp
652
		 40 = /dev/inet/idp
653
		 41 = /dev/inet/rawip
654

655
		Additionally, iBCS-2 requires the following links:
656

657
		/dev/ip -> /dev/inet/ip
658
		/dev/icmp -> /dev/inet/icmp
659
		/dev/ggp -> /dev/inet/ggp
660
		/dev/ipip -> /dev/inet/ipip
661
		/dev/tcp -> /dev/inet/tcp
662
		/dev/egp -> /dev/inet/egp
663
		/dev/pup -> /dev/inet/pup
664
		/dev/udp -> /dev/inet/udp
665
		/dev/idp -> /dev/inet/idp
666
		/dev/rawip -> /dev/inet/rawip
667
		/dev/inet/arp -> /dev/inet/udp
668
		/dev/inet/rip -> /dev/inet/udp
669
		/dev/nfsd -> /dev/socksys
670
		/dev/X0R -> /dev/null (? apparently not required ?)
671

672
  30 block	Philips LMS CM-205 CD-ROM
673
		  0 = /dev/cm205cd	Philips LMS CM-205 CD-ROM
674

675
		/dev/lmscd is an older name for this device.  This
676
		driver does not work with the CM-205MS CD-ROM.
677

678
  31 char	MPU-401 MIDI
679
		  0 = /dev/mpu401data	MPU-401 data port
680
		  1 = /dev/mpu401stat	MPU-401 status port
681

682
  31 block	ROM/flash memory card
683
		  0 = /dev/rom0		First ROM card (rw)
684
		      ...
685
		  7 = /dev/rom7		Eighth ROM card (rw)
686
		  8 = /dev/rrom0	First ROM card (ro)
687
		    ...
688
		 15 = /dev/rrom7	Eighth ROM card (ro)
689
		 16 = /dev/flash0	First flash memory card (rw)
690
		    ...
691
		 23 = /dev/flash7	Eighth flash memory card (rw)
692
		 24 = /dev/rflash0	First flash memory card (ro)
693
		    ...
694
		 31 = /dev/rflash7	Eighth flash memory card (ro)
695

696
		The read-write (rw) devices support back-caching
697
		written data in RAM, as well as writing to flash RAM
698
		devices.  The read-only devices (ro) support reading
699
		only.
700

701
  32 char	Specialix serial card
702
		  0 = /dev/ttyX0	First Specialix port
703
		  1 = /dev/ttyX1	Second Specialix port
704
		    ...
705
  32 block	Philips LMS CM-206 CD-ROM
706
		  0 = /dev/cm206cd	Philips LMS CM-206 CD-ROM
707

708
  33 char	Specialix serial card - alternate devices
709
		  0 = /dev/cux0		Callout device for ttyX0
710
		  1 = /dev/cux1		Callout device for ttyX1
711
		    ...
712
  33 block	Third IDE hard disk/CD-ROM interface
713
		  0 = /dev/hde		Master: whole disk (or CD-ROM)
714
		 64 = /dev/hdf		Slave: whole disk (or CD-ROM)
715

716
		Partitions are handled the same way as for the first
717
		interface (see major number 3).
718

719
  34 char	Z8530 HDLC driver
720
		  0 = /dev/scc0		First Z8530, first port
721
		  1 = /dev/scc1		First Z8530, second port
722
		  2 = /dev/scc2		Second Z8530, first port
723
		  3 = /dev/scc3		Second Z8530, second port
724
		    ...
725

726
		In a previous version these devices were named
727
		/dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
728
		on.
729

730
  34 block	Fourth IDE hard disk/CD-ROM interface
731
		  0 = /dev/hdg		Master: whole disk (or CD-ROM)
732
		 64 = /dev/hdh		Slave: whole disk (or CD-ROM)
733

734
		Partitions are handled the same way as for the first
735
		interface (see major number 3).
736

737
  35 char	tclmidi MIDI driver
738
		  0 = /dev/midi0	First MIDI port, kernel timed
739
		  1 = /dev/midi1	Second MIDI port, kernel timed
740
		  2 = /dev/midi2	Third MIDI port, kernel timed
741
		  3 = /dev/midi3	Fourth MIDI port, kernel timed
742
		 64 = /dev/rmidi0	First MIDI port, untimed
743
		 65 = /dev/rmidi1	Second MIDI port, untimed
744
		 66 = /dev/rmidi2	Third MIDI port, untimed
745
		 67 = /dev/rmidi3	Fourth MIDI port, untimed
746
		128 = /dev/smpte0	First MIDI port, SMPTE timed
747
		129 = /dev/smpte1	Second MIDI port, SMPTE timed
748
		130 = /dev/smpte2	Third MIDI port, SMPTE timed
749
		131 = /dev/smpte3	Fourth MIDI port, SMPTE timed
750

751
  35 block	Slow memory ramdisk
752
		  0 = /dev/slram	Slow memory ramdisk
753

754
  36 char	Netlink support
755
		  0 = /dev/route	Routing, device updates, kernel to user
756
		  1 = /dev/skip		enSKIP security cache control
757
		  3 = /dev/fwmonitor	Firewall packet copies
758
		 16 = /dev/tap0		First Ethertap device
759
		    ...
760
		 31 = /dev/tap15	16th Ethertap device
761

762
  36 block	OBSOLETE (was MCA ESDI hard disk)
763

764
  37 char	IDE tape
765
		  0 = /dev/ht0		First IDE tape
766
		  1 = /dev/ht1		Second IDE tape
767
		    ...
768
		128 = /dev/nht0		First IDE tape, no rewind-on-close
769
		129 = /dev/nht1		Second IDE tape, no rewind-on-close
770
		    ...
771

772
		Currently, only one IDE tape drive is supported.
773

774
  37 block	Zorro II ramdisk
775
		  0 = /dev/z2ram	Zorro II ramdisk
776

777
  38 char	Myricom PCI Myrinet board
778
		  0 = /dev/mlanai0	First Myrinet board
779
		  1 = /dev/mlanai1	Second Myrinet board
780
		    ...
781

782
		This device is used for status query, board control
783
		and "user level packet I/O."  This board is also
784
		accessible as a standard networking "eth" device.
785

786
  38 block	OBSOLETE (was Linux/AP+)
787

788
  39 char	ML-16P experimental I/O board
789
		  0 = /dev/ml16pa-a0	First card, first analog channel
790
		  1 = /dev/ml16pa-a1	First card, second analog channel
791
		    ...
792
		 15 = /dev/ml16pa-a15	First card, 16th analog channel
793
		 16 = /dev/ml16pa-d	First card, digital lines
794
		 17 = /dev/ml16pa-c0	First card, first counter/timer
795
		 18 = /dev/ml16pa-c1	First card, second counter/timer
796
		 19 = /dev/ml16pa-c2	First card, third counter/timer
797
		 32 = /dev/ml16pb-a0	Second card, first analog channel
798
		 33 = /dev/ml16pb-a1	Second card, second analog channel
799
		    ...
800
		 47 = /dev/ml16pb-a15	Second card, 16th analog channel
801
		 48 = /dev/ml16pb-d	Second card, digital lines
802
		 49 = /dev/ml16pb-c0	Second card, first counter/timer
803
		 50 = /dev/ml16pb-c1	Second card, second counter/timer
804
		 51 = /dev/ml16pb-c2	Second card, third counter/timer
805
		      ...
806
  39 block
807

808
  40 char
809

810
  40 block
811

812
  41 char	Yet Another Micro Monitor
813
		  0 = /dev/yamm		Yet Another Micro Monitor
814

815
  41 block
816

817
  42 char	Demo/sample use
818

819
  42 block	Demo/sample use
820

821
		This number is intended for use in sample code, as
822
		well as a general "example" device number.  It
823
		should never be used for a device driver that is being
824
		distributed; either obtain an official number or use
825
		the local/experimental range.  The sudden addition or
826
		removal of a driver with this number should not cause
827
		ill effects to the system (bugs excepted.)
828

829
		IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
830
		DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
831

832
  43 char	isdn4linux virtual modem
833
		  0 = /dev/ttyI0	First virtual modem
834
		    ...
835
		 63 = /dev/ttyI63	64th virtual modem
836

837
  43 block	Network block devices
838
		  0 = /dev/nb0		First network block device
839
		  1 = /dev/nb1		Second network block device
840
		    ...
841

842
		Network Block Device is somehow similar to loopback
843
		devices: If you read from it, it sends packet across
844
		network asking server for data. If you write to it, it
845
		sends packet telling server to write. It could be used
846
		to mounting filesystems over the net, swapping over
847
		the net, implementing block device in userland etc.
848

849
  44 char	isdn4linux virtual modem - alternate devices
850
		  0 = /dev/cui0		Callout device for ttyI0
851
		    ...
852
		 63 = /dev/cui63	Callout device for ttyI63
853

854
  44 block	Flash Translation Layer (FTL) filesystems
855
		  0 = /dev/ftla		FTL on first Memory Technology Device
856
		 16 = /dev/ftlb		FTL on second Memory Technology Device
857
		 32 = /dev/ftlc		FTL on third Memory Technology Device
858
		    ...
859
		240 = /dev/ftlp		FTL on 16th Memory Technology Device
860

861
		Partitions are handled in the same way as for IDE
862
		disks (see major number 3) except that the partition
863
		limit is 15 rather than 63 per disk (same as SCSI.)
864

865
  45 char	isdn4linux ISDN BRI driver
866
		  0 = /dev/isdn0	First virtual B channel raw data
867
		    ...
868
		 63 = /dev/isdn63	64th virtual B channel raw data
869
		 64 = /dev/isdnctrl0	First channel control/debug
870
		    ...
871
		127 = /dev/isdnctrl63	64th channel control/debug
872

873
		128 = /dev/ippp0	First SyncPPP device
874
		    ...
875
		191 = /dev/ippp63	64th SyncPPP device
876

877
		255 = /dev/isdninfo	ISDN monitor interface
878

879
  45 block	Parallel port IDE disk devices
880
		  0 = /dev/pda		First parallel port IDE disk
881
		 16 = /dev/pdb		Second parallel port IDE disk
882
		 32 = /dev/pdc		Third parallel port IDE disk
883
		 48 = /dev/pdd		Fourth parallel port IDE disk
884

885
		Partitions are handled in the same way as for IDE
886
		disks (see major number 3) except that the partition
887
		limit is 15 rather than 63 per disk.
888

889
  46 char	Comtrol Rocketport serial card
890
		  0 = /dev/ttyR0	First Rocketport port
891
		  1 = /dev/ttyR1	Second Rocketport port
892
		    ...
893
  46 block	Parallel port ATAPI CD-ROM devices
894
		  0 = /dev/pcd0		First parallel port ATAPI CD-ROM
895
		  1 = /dev/pcd1		Second parallel port ATAPI CD-ROM
896
		  2 = /dev/pcd2		Third parallel port ATAPI CD-ROM
897
		  3 = /dev/pcd3		Fourth parallel port ATAPI CD-ROM
898

899
  47 char	Comtrol Rocketport serial card - alternate devices
900
		  0 = /dev/cur0		Callout device for ttyR0
901
		  1 = /dev/cur1		Callout device for ttyR1
902
		    ...
903
  47 block	Parallel port ATAPI disk devices
904
		  0 = /dev/pf0		First parallel port ATAPI disk
905
		  1 = /dev/pf1		Second parallel port ATAPI disk
906
		  2 = /dev/pf2		Third parallel port ATAPI disk
907
		  3 = /dev/pf3		Fourth parallel port ATAPI disk
908

909
		This driver is intended for floppy disks and similar
910
		devices and hence does not support partitioning.
911

912
  48 char	SDL RISCom serial card
913
		  0 = /dev/ttyL0	First RISCom port
914
		  1 = /dev/ttyL1	Second RISCom port
915
		    ...
916
  48 block	Mylex DAC960 PCI RAID controller; first controller
917
		  0 = /dev/rd/c0d0	First disk, whole disk
918
		  8 = /dev/rd/c0d1	Second disk, whole disk
919
		    ...
920
		248 = /dev/rd/c0d31	32nd disk, whole disk
921

922
		For partitions add:
923
		  0 = /dev/rd/c?d?	Whole disk
924
		  1 = /dev/rd/c?d?p1	First partition
925
		    ...
926
		  7 = /dev/rd/c?d?p7	Seventh partition
927

928
  49 char	SDL RISCom serial card - alternate devices
929
		  0 = /dev/cul0		Callout device for ttyL0
930
		  1 = /dev/cul1		Callout device for ttyL1
931
		    ...
932
  49 block	Mylex DAC960 PCI RAID controller; second controller
933
		  0 = /dev/rd/c1d0	First disk, whole disk
934
		  8 = /dev/rd/c1d1	Second disk, whole disk
935
		    ...
936
		248 = /dev/rd/c1d31	32nd disk, whole disk
937

938
		Partitions are handled as for major 48.
939

940
  50 char	Reserved for GLINT
941

942
  50 block	Mylex DAC960 PCI RAID controller; third controller
943
		  0 = /dev/rd/c2d0	First disk, whole disk
944
		  8 = /dev/rd/c2d1	Second disk, whole disk
945
		    ...
946
		248 = /dev/rd/c2d31	32nd disk, whole disk
947

948
  51 char	Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
949
		  0 = /dev/bc0		First Baycom radio modem
950
		  1 = /dev/bc1		Second Baycom radio modem
951
		    ...
952
  51 block	Mylex DAC960 PCI RAID controller; fourth controller
953
		  0 = /dev/rd/c3d0	First disk, whole disk
954
		  8 = /dev/rd/c3d1	Second disk, whole disk
955
		    ...
956
		248 = /dev/rd/c3d31	32nd disk, whole disk
957

958
		Partitions are handled as for major 48.
959

960
  52 char	Spellcaster DataComm/BRI ISDN card
961
		  0 = /dev/dcbri0	First DataComm card
962
		  1 = /dev/dcbri1	Second DataComm card
963
		  2 = /dev/dcbri2	Third DataComm card
964
		  3 = /dev/dcbri3	Fourth DataComm card
965

966
  52 block	Mylex DAC960 PCI RAID controller; fifth controller
967
		  0 = /dev/rd/c4d0	First disk, whole disk
968
		  8 = /dev/rd/c4d1	Second disk, whole disk
969
		    ...
970
		248 = /dev/rd/c4d31	32nd disk, whole disk
971

972
		Partitions are handled as for major 48.
973

974
  53 char	BDM interface for remote debugging MC683xx microcontrollers
975
		  0 = /dev/pd_bdm0	PD BDM interface on lp0
976
		  1 = /dev/pd_bdm1	PD BDM interface on lp1
977
		  2 = /dev/pd_bdm2	PD BDM interface on lp2
978
		  4 = /dev/icd_bdm0	ICD BDM interface on lp0
979
		  5 = /dev/icd_bdm1	ICD BDM interface on lp1
980
		  6 = /dev/icd_bdm2	ICD BDM interface on lp2
981

982
		This device is used for the interfacing to the MC683xx
983
		microcontrollers via Background Debug Mode by use of a
984
		Parallel Port interface. PD is the Motorola Public
985
		Domain Interface and ICD is the commercial interface
986
		by P&E.
987

988
  53 block	Mylex DAC960 PCI RAID controller; sixth controller
989
		  0 = /dev/rd/c5d0	First disk, whole disk
990
		  8 = /dev/rd/c5d1	Second disk, whole disk
991
		    ...
992
		248 = /dev/rd/c5d31	32nd disk, whole disk
993

994
		Partitions are handled as for major 48.
995

996
  54 char	Electrocardiognosis Holter serial card
997
		  0 = /dev/holter0	First Holter port
998
		  1 = /dev/holter1	Second Holter port
999
		  2 = /dev/holter2	Third Holter port
1000

1001
		A custom serial card used by Electrocardiognosis SRL
1002
		<[email protected]> to transfer data from Holter
1003
		24-hour heart monitoring equipment.
1004

1005
  54 block	Mylex DAC960 PCI RAID controller; seventh controller
1006
		  0 = /dev/rd/c6d0	First disk, whole disk
1007
		  8 = /dev/rd/c6d1	Second disk, whole disk
1008
		    ...
1009
		248 = /dev/rd/c6d31	32nd disk, whole disk
1010

1011
		Partitions are handled as for major 48.
1012

1013
  55 char	DSP56001 digital signal processor
1014
		  0 = /dev/dsp56k	First DSP56001
1015

1016
  55 block	Mylex DAC960 PCI RAID controller; eighth controller
1017
		  0 = /dev/rd/c7d0	First disk, whole disk
1018
		  8 = /dev/rd/c7d1	Second disk, whole disk
1019
		    ...
1020
		248 = /dev/rd/c7d31	32nd disk, whole disk
1021

1022
		Partitions are handled as for major 48.
1023

1024
  56 char	Apple Desktop Bus
1025
		  0 = /dev/adb		ADB bus control
1026

1027
		Additional devices will be added to this number, all
1028
		starting with /dev/adb.
1029

1030
  56 block	Fifth IDE hard disk/CD-ROM interface
1031
		  0 = /dev/hdi		Master: whole disk (or CD-ROM)
1032
		 64 = /dev/hdj		Slave: whole disk (or CD-ROM)
1033

1034
		Partitions are handled the same way as for the first
1035
		interface (see major number 3).
1036

1037
  57 char	Hayes ESP serial card
1038
		  0 = /dev/ttyP0	First ESP port
1039
		  1 = /dev/ttyP1	Second ESP port
1040
		    ...
1041

1042
  57 block	Sixth IDE hard disk/CD-ROM interface
1043
		  0 = /dev/hdk		Master: whole disk (or CD-ROM)
1044
		 64 = /dev/hdl		Slave: whole disk (or CD-ROM)
1045

1046
		Partitions are handled the same way as for the first
1047
		interface (see major number 3).
1048

1049
  58 char	Hayes ESP serial card - alternate devices
1050
		  0 = /dev/cup0		Callout device for ttyP0
1051
		  1 = /dev/cup1		Callout device for ttyP1
1052
		    ...
1053

1054
  58 block	Reserved for logical volume manager
1055

1056
  59 char	sf firewall package
1057
		  0 = /dev/firewall	Communication with sf kernel module
1058

1059
  59 block	Generic PDA filesystem device
1060
		  0 = /dev/pda0		First PDA device
1061
		  1 = /dev/pda1		Second PDA device
1062
		    ...
1063

1064
		The pda devices are used to mount filesystems on
1065
		remote pda's (basically slow handheld machines with
1066
		proprietary OS's and limited memory and storage
1067
		running small fs translation drivers) through serial /
1068
		IRDA / parallel links.
1069

1070
		NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1071

1072
  60-63 char	LOCAL/EXPERIMENTAL USE
1073

1074
  60-63 block	LOCAL/EXPERIMENTAL USE
1075
		Allocated for local/experimental use.  For devices not
1076
		assigned official numbers, these ranges should be
1077
		used in order to avoid conflicting with future assignments.
1078

1079
  64 char	ENskip kernel encryption package
1080
		  0 = /dev/enskip	Communication with ENskip kernel module
1081

1082
  64 block	Scramdisk/DriveCrypt encrypted devices
1083
		  0 = /dev/scramdisk/master    Master node for ioctls
1084
		  1 = /dev/scramdisk/1         First encrypted device
1085
		  2 = /dev/scramdisk/2         Second encrypted device
1086
		  ...
1087
		255 = /dev/scramdisk/255       255th encrypted device
1088

1089
		The filename of the encrypted container and the passwords
1090
		are sent via ioctls (using the sdmount tool) to the master
1091
		node which then activates them via one of the
1092
		/dev/scramdisk/x nodes for loop mounting (all handled
1093
		through the sdmount tool).
1094

1095
		Requested by: [email protected]
1096

1097
  65 char	Sundance "plink" Transputer boards (obsolete, unused)
1098
		  0 = /dev/plink0	First plink device
1099
		  1 = /dev/plink1	Second plink device
1100
		  2 = /dev/plink2	Third plink device
1101
		  3 = /dev/plink3	Fourth plink device
1102
		 64 = /dev/rplink0	First plink device, raw
1103
		 65 = /dev/rplink1	Second plink device, raw
1104
		 66 = /dev/rplink2	Third plink device, raw
1105
		 67 = /dev/rplink3	Fourth plink device, raw
1106
		128 = /dev/plink0d	First plink device, debug
1107
		129 = /dev/plink1d	Second plink device, debug
1108
		130 = /dev/plink2d	Third plink device, debug
1109
		131 = /dev/plink3d	Fourth plink device, debug
1110
		192 = /dev/rplink0d	First plink device, raw, debug
1111
		193 = /dev/rplink1d	Second plink device, raw, debug
1112
		194 = /dev/rplink2d	Third plink device, raw, debug
1113
		195 = /dev/rplink3d	Fourth plink device, raw, debug
1114

1115
		This is a commercial driver; contact James Howes
1116
		<[email protected]> for information.
1117

1118
  65 block	SCSI disk devices (16-31)
1119
		  0 = /dev/sdq		17th SCSI disk whole disk
1120
		 16 = /dev/sdr		18th SCSI disk whole disk
1121
		 32 = /dev/sds		19th SCSI disk whole disk
1122
		    ...
1123
		240 = /dev/sdaf		32nd SCSI disk whole disk
1124

1125
		Partitions are handled in the same way as for IDE
1126
		disks (see major number 3) except that the limit on
1127
		partitions is 15.
1128

1129
  66 char	YARC PowerPC PCI coprocessor card
1130
		  0 = /dev/yppcpci0	First YARC card
1131
		  1 = /dev/yppcpci1	Second YARC card
1132
		    ...
1133

1134
  66 block	SCSI disk devices (32-47)
1135
		  0 = /dev/sdag		33th SCSI disk whole disk
1136
		 16 = /dev/sdah		34th SCSI disk whole disk
1137
		 32 = /dev/sdai		35th SCSI disk whole disk
1138
		    ...
1139
		240 = /dev/sdav		48nd SCSI disk whole disk
1140

1141
		Partitions are handled in the same way as for IDE
1142
		disks (see major number 3) except that the limit on
1143
		partitions is 15.
1144

1145
  67 char	Coda network file system
1146
		  0 = /dev/cfs0		Coda cache manager
1147

1148
		See http://www.coda.cs.cmu.edu for information about Coda.
1149

1150
  67 block	SCSI disk devices (48-63)
1151
		  0 = /dev/sdaw		49th SCSI disk whole disk
1152
		 16 = /dev/sdax		50th SCSI disk whole disk
1153
		 32 = /dev/sday		51st SCSI disk whole disk
1154
		    ...
1155
		240 = /dev/sdbl		64th SCSI disk whole disk
1156

1157
		Partitions are handled in the same way as for IDE
1158
		disks (see major number 3) except that the limit on
1159
		partitions is 15.
1160

1161
  68 char	CAPI 2.0 interface
1162
		  0 = /dev/capi20	Control device
1163
		  1 = /dev/capi20.00	First CAPI 2.0 application
1164
		  2 = /dev/capi20.01	Second CAPI 2.0 application
1165
		    ...
1166
		 20 = /dev/capi20.19	19th CAPI 2.0 application
1167

1168
		ISDN CAPI 2.0 driver for use with CAPI 2.0
1169
		applications; currently supports the AVM B1 card.
1170

1171
  68 block	SCSI disk devices (64-79)
1172
		  0 = /dev/sdbm		65th SCSI disk whole disk
1173
		 16 = /dev/sdbn		66th SCSI disk whole disk
1174
		 32 = /dev/sdbo		67th SCSI disk whole disk
1175
		    ...
1176
		240 = /dev/sdcb		80th SCSI disk whole disk
1177

1178
		Partitions are handled in the same way as for IDE
1179
		disks (see major number 3) except that the limit on
1180
		partitions is 15.
1181

1182
  69 char	MA16 numeric accelerator card
1183
		  0 = /dev/ma16		Board memory access
1184

1185
  69 block	SCSI disk devices (80-95)
1186
		  0 = /dev/sdcc		81st SCSI disk whole disk
1187
		 16 = /dev/sdcd		82nd SCSI disk whole disk
1188
		 32 = /dev/sdce		83th SCSI disk whole disk
1189
		    ...
1190
		240 = /dev/sdcr		96th SCSI disk whole disk
1191

1192
		Partitions are handled in the same way as for IDE
1193
		disks (see major number 3) except that the limit on
1194
		partitions is 15.
1195

1196
  70 char	SpellCaster Protocol Services Interface
1197
		  0 = /dev/apscfg	Configuration interface
1198
		  1 = /dev/apsauth	Authentication interface
1199
		  2 = /dev/apslog	Logging interface
1200
		  3 = /dev/apsdbg	Debugging interface
1201
		 64 = /dev/apsisdn	ISDN command interface
1202
		 65 = /dev/apsasync	Async command interface
1203
		128 = /dev/apsmon	Monitor interface
1204

1205
  70 block	SCSI disk devices (96-111)
1206
		  0 = /dev/sdcs		97th SCSI disk whole disk
1207
		 16 = /dev/sdct		98th SCSI disk whole disk
1208
		 32 = /dev/sdcu		99th SCSI disk whole disk
1209
		    ...
1210
		240 = /dev/sddh		112nd SCSI disk whole disk
1211

1212
		Partitions are handled in the same way as for IDE
1213
		disks (see major number 3) except that the limit on
1214
		partitions is 15.
1215

1216
  71 char	Computone IntelliPort II serial card
1217
		  0 = /dev/ttyF0	IntelliPort II board 0, port 0
1218
		  1 = /dev/ttyF1	IntelliPort II board 0, port 1
1219
		    ...
1220
		 63 = /dev/ttyF63	IntelliPort II board 0, port 63
1221
		 64 = /dev/ttyF64	IntelliPort II board 1, port 0
1222
		 65 = /dev/ttyF65	IntelliPort II board 1, port 1
1223
		    ...
1224
		127 = /dev/ttyF127	IntelliPort II board 1, port 63
1225
		128 = /dev/ttyF128	IntelliPort II board 2, port 0
1226
		129 = /dev/ttyF129	IntelliPort II board 2, port 1
1227
		    ...
1228
		191 = /dev/ttyF191	IntelliPort II board 2, port 63
1229
		192 = /dev/ttyF192	IntelliPort II board 3, port 0
1230
		193 = /dev/ttyF193	IntelliPort II board 3, port 1
1231
		    ...
1232
		255 = /dev/ttyF255	IntelliPort II board 3, port 63
1233

1234
  71 block	SCSI disk devices (112-127)
1235
		  0 = /dev/sddi		113th SCSI disk whole disk
1236
		 16 = /dev/sddj		114th SCSI disk whole disk
1237
		 32 = /dev/sddk		115th SCSI disk whole disk
1238
		    ...
1239
		240 = /dev/sddx		128th SCSI disk whole disk
1240

1241
		Partitions are handled in the same way as for IDE
1242
		disks (see major number 3) except that the limit on
1243
		partitions is 15.
1244

1245
  72 char	Computone IntelliPort II serial card - alternate devices
1246
		  0 = /dev/cuf0		Callout device for ttyF0
1247
		  1 = /dev/cuf1		Callout device for ttyF1
1248
		    ...
1249
		 63 = /dev/cuf63	Callout device for ttyF63
1250
		 64 = /dev/cuf64	Callout device for ttyF64
1251
		 65 = /dev/cuf65	Callout device for ttyF65
1252
		    ...
1253
		127 = /dev/cuf127	Callout device for ttyF127
1254
		128 = /dev/cuf128	Callout device for ttyF128
1255
		129 = /dev/cuf129	Callout device for ttyF129
1256
		    ...
1257
		191 = /dev/cuf191	Callout device for ttyF191
1258
		192 = /dev/cuf192	Callout device for ttyF192
1259
		193 = /dev/cuf193	Callout device for ttyF193
1260
		    ...
1261
		255 = /dev/cuf255	Callout device for ttyF255
1262

1263
  72 block	Compaq Intelligent Drive Array, first controller
1264
		  0 = /dev/ida/c0d0	First logical drive whole disk
1265
		 16 = /dev/ida/c0d1	Second logical drive whole disk
1266
		    ...
1267
		240 = /dev/ida/c0d15	16th logical drive whole disk
1268

1269
		Partitions are handled the same way as for Mylex
1270
		DAC960 (see major number 48) except that the limit on
1271
		partitions is 15.
1272

1273
  73 char	Computone IntelliPort II serial card - control devices
1274
		  0 = /dev/ip2ipl0	Loadware device for board 0
1275
		  1 = /dev/ip2stat0	Status device for board 0
1276
		  4 = /dev/ip2ipl1	Loadware device for board 1
1277
		  5 = /dev/ip2stat1	Status device for board 1
1278
		  8 = /dev/ip2ipl2	Loadware device for board 2
1279
		  9 = /dev/ip2stat2	Status device for board 2
1280
		 12 = /dev/ip2ipl3	Loadware device for board 3
1281
		 13 = /dev/ip2stat3	Status device for board 3
1282

1283
  73 block	Compaq Intelligent Drive Array, second controller
1284
		  0 = /dev/ida/c1d0	First logical drive whole disk
1285
		 16 = /dev/ida/c1d1	Second logical drive whole disk
1286
		    ...
1287
		240 = /dev/ida/c1d15	16th logical drive whole disk
1288

1289
		Partitions are handled the same way as for Mylex
1290
		DAC960 (see major number 48) except that the limit on
1291
		partitions is 15.
1292

1293
  74 char	SCI bridge
1294
		  0 = /dev/SCI/0	SCI device 0
1295
		  1 = /dev/SCI/1	SCI device 1
1296
		    ...
1297

1298
		Currently for Dolphin Interconnect Solutions' PCI-SCI
1299
		bridge.
1300

1301
  74 block	Compaq Intelligent Drive Array, third controller
1302
		  0 = /dev/ida/c2d0	First logical drive whole disk
1303
		 16 = /dev/ida/c2d1	Second logical drive whole disk
1304
		    ...
1305
		240 = /dev/ida/c2d15	16th logical drive whole disk
1306

1307
		Partitions are handled the same way as for Mylex
1308
		DAC960 (see major number 48) except that the limit on
1309
		partitions is 15.
1310

1311
  75 char	Specialix IO8+ serial card
1312
		  0 = /dev/ttyW0	First IO8+ port, first card
1313
		  1 = /dev/ttyW1	Second IO8+ port, first card
1314
		    ...
1315
		  8 = /dev/ttyW8	First IO8+ port, second card
1316
		    ...
1317

1318
  75 block	Compaq Intelligent Drive Array, fourth controller
1319
		  0 = /dev/ida/c3d0	First logical drive whole disk
1320
		 16 = /dev/ida/c3d1	Second logical drive whole disk
1321
		    ...
1322
		240 = /dev/ida/c3d15	16th logical drive whole disk
1323

1324
		Partitions are handled the same way as for Mylex
1325
		DAC960 (see major number 48) except that the limit on
1326
		partitions is 15.
1327

1328
  76 char	Specialix IO8+ serial card - alternate devices
1329
		  0 = /dev/cuw0		Callout device for ttyW0
1330
		  1 = /dev/cuw1		Callout device for ttyW1
1331
		    ...
1332
		  8 = /dev/cuw8		Callout device for ttyW8
1333
		    ...
1334

1335
  76 block	Compaq Intelligent Drive Array, fifth controller
1336
		  0 = /dev/ida/c4d0	First logical drive whole disk
1337
		 16 = /dev/ida/c4d1	Second logical drive whole disk
1338
		    ...
1339
		240 = /dev/ida/c4d15	16th logical drive whole disk
1340

1341
		Partitions are handled the same way as for Mylex
1342
		DAC960 (see major number 48) except that the limit on
1343
		partitions is 15.
1344

1345

1346
  77 char	ComScire Quantum Noise Generator
1347
		  0 = /dev/qng		ComScire Quantum Noise Generator
1348

1349
  77 block	Compaq Intelligent Drive Array, sixth controller
1350
		  0 = /dev/ida/c5d0	First logical drive whole disk
1351
		 16 = /dev/ida/c5d1	Second logical drive whole disk
1352
		    ...
1353
		240 = /dev/ida/c5d15	16th logical drive whole disk
1354

1355
		Partitions are handled the same way as for Mylex
1356
		DAC960 (see major number 48) except that the limit on
1357
		partitions is 15.
1358

1359
  78 char	PAM Software's multimodem boards
1360
		  0 = /dev/ttyM0	First PAM modem
1361
		  1 = /dev/ttyM1	Second PAM modem
1362
		    ...
1363

1364
  78 block	Compaq Intelligent Drive Array, seventh controller
1365
		  0 = /dev/ida/c6d0	First logical drive whole disk
1366
		 16 = /dev/ida/c6d1	Second logical drive whole disk
1367
		    ...
1368
		240 = /dev/ida/c6d15	16th logical drive whole disk
1369

1370
		Partitions are handled the same way as for Mylex
1371
		DAC960 (see major number 48) except that the limit on
1372
		partitions is 15.
1373

1374
  79 char	PAM Software's multimodem boards - alternate devices
1375
		  0 = /dev/cum0		Callout device for ttyM0
1376
		  1 = /dev/cum1		Callout device for ttyM1
1377
		    ...
1378

1379
  79 block	Compaq Intelligent Drive Array, eighth controller
1380
		  0 = /dev/ida/c7d0	First logical drive whole disk
1381
		 16 = /dev/ida/c7d1	Second logical drive whole disk
1382
		    ...
1383
		240 = /dev/ida/c715	16th logical drive whole disk
1384

1385
		Partitions are handled the same way as for Mylex
1386
		DAC960 (see major number 48) except that the limit on
1387
		partitions is 15.
1388

1389
  80 char	Photometrics AT200 CCD camera
1390
		  0 = /dev/at200	Photometrics AT200 CCD camera
1391

1392
  80 block	I2O hard disk
1393
		  0 = /dev/i2o/hda	First I2O hard disk, whole disk
1394
		 16 = /dev/i2o/hdb	Second I2O hard disk, whole disk
1395
		    ...
1396
		240 = /dev/i2o/hdp	16th I2O hard disk, whole disk
1397

1398
		Partitions are handled in the same way as for IDE
1399
		disks (see major number 3) except that the limit on
1400
		partitions is 15.
1401

1402
  81 char	video4linux
1403
		  0 = /dev/video0	Video capture/overlay device
1404
		    ...
1405
		 63 = /dev/video63	Video capture/overlay device
1406
		 64 = /dev/radio0	Radio device
1407
		    ...
1408
		127 = /dev/radio63	Radio device
1409
		128 = /dev/swradio0	Software Defined Radio device
1410
		    ...
1411
		191 = /dev/swradio63	Software Defined Radio device
1412
		224 = /dev/vbi0		Vertical blank interrupt
1413
		    ...
1414
		255 = /dev/vbi31	Vertical blank interrupt
1415

1416
		Minor numbers are allocated dynamically unless
1417
		CONFIG_VIDEO_FIXED_MINOR_RANGES (default n)
1418
		configuration option is set.
1419

1420
  81 block	I2O hard disk
1421
		  0 = /dev/i2o/hdq	17th I2O hard disk, whole disk
1422
		 16 = /dev/i2o/hdr	18th I2O hard disk, whole disk
1423
		    ...
1424
		240 = /dev/i2o/hdaf	32nd I2O hard disk, whole disk
1425

1426
		Partitions are handled in the same way as for IDE
1427
		disks (see major number 3) except that the limit on
1428
		partitions is 15.
1429

1430
  82 char	WiNRADiO communications receiver card
1431
		  0 = /dev/winradio0	First WiNRADiO card
1432
		  1 = /dev/winradio1	Second WiNRADiO card
1433
		    ...
1434

1435
		The driver and documentation may be obtained from
1436
		https://www.winradio.com/
1437

1438
  82 block	I2O hard disk
1439
		  0 = /dev/i2o/hdag	33rd I2O hard disk, whole disk
1440
		 16 = /dev/i2o/hdah	34th I2O hard disk, whole disk
1441
		    ...
1442
		240 = /dev/i2o/hdav	48th I2O hard disk, whole disk
1443

1444
		Partitions are handled in the same way as for IDE
1445
		disks (see major number 3) except that the limit on
1446
		partitions is 15.
1447

1448
  83 char	Matrox mga_vid video driver
1449
		 0 = /dev/mga_vid0	1st video card
1450
		 1 = /dev/mga_vid1	2nd video card
1451
		 2 = /dev/mga_vid2	3rd video card
1452
		  ...
1453
		15 = /dev/mga_vid15	16th video card
1454

1455
  83 block	I2O hard disk
1456
		  0 = /dev/i2o/hdaw	49th I2O hard disk, whole disk
1457
		 16 = /dev/i2o/hdax	50th I2O hard disk, whole disk
1458
		    ...
1459
		240 = /dev/i2o/hdbl	64th I2O hard disk, whole disk
1460

1461
		Partitions are handled in the same way as for IDE
1462
		disks (see major number 3) except that the limit on
1463
		partitions is 15.
1464

1465
  84 char	Ikon 1011[57] Versatec Greensheet Interface
1466
		  0 = /dev/ihcp0	First Greensheet port
1467
		  1 = /dev/ihcp1	Second Greensheet port
1468

1469
  84 block	I2O hard disk
1470
		  0 = /dev/i2o/hdbm	65th I2O hard disk, whole disk
1471
		 16 = /dev/i2o/hdbn	66th I2O hard disk, whole disk
1472
		    ...
1473
		240 = /dev/i2o/hdcb	80th I2O hard disk, whole disk
1474

1475
		Partitions are handled in the same way as for IDE
1476
		disks (see major number 3) except that the limit on
1477
		partitions is 15.
1478

1479
  85 char	Linux/SGI shared memory input queue
1480
		  0 = /dev/shmiq	Master shared input queue
1481
		  1 = /dev/qcntl0	First device pushed
1482
		  2 = /dev/qcntl1	Second device pushed
1483
		    ...
1484

1485
  85 block	I2O hard disk
1486
		  0 = /dev/i2o/hdcc	81st I2O hard disk, whole disk
1487
		 16 = /dev/i2o/hdcd	82nd I2O hard disk, whole disk
1488
		    ...
1489
		240 = /dev/i2o/hdcr	96th I2O hard disk, whole disk
1490

1491
		Partitions are handled in the same way as for IDE
1492
		disks (see major number 3) except that the limit on
1493
		partitions is 15.
1494

1495
  86 char	SCSI media changer
1496
		  0 = /dev/sch0		First SCSI media changer
1497
		  1 = /dev/sch1		Second SCSI media changer
1498
		    ...
1499

1500
  86 block	I2O hard disk
1501
		  0 = /dev/i2o/hdcs	97th I2O hard disk, whole disk
1502
		 16 = /dev/i2o/hdct	98th I2O hard disk, whole disk
1503
		    ...
1504
		240 = /dev/i2o/hddh	112th I2O hard disk, whole disk
1505

1506
		Partitions are handled in the same way as for IDE
1507
		disks (see major number 3) except that the limit on
1508
		partitions is 15.
1509

1510
  87 char	Sony Control-A1 stereo control bus
1511
		  0 = /dev/controla0	First device on chain
1512
		  1 = /dev/controla1	Second device on chain
1513
		    ...
1514

1515
  87 block	I2O hard disk
1516
		  0 = /dev/i2o/hddi	113rd I2O hard disk, whole disk
1517
		 16 = /dev/i2o/hddj	114th I2O hard disk, whole disk
1518
		    ...
1519
		240 = /dev/i2o/hddx	128th I2O hard disk, whole disk
1520

1521
		Partitions are handled in the same way as for IDE
1522
		disks (see major number 3) except that the limit on
1523
		partitions is 15.
1524

1525
  88 char	COMX synchronous serial card
1526
		  0 = /dev/comx0	COMX channel 0
1527
		  1 = /dev/comx1	COMX channel 1
1528
		    ...
1529

1530
  88 block	Seventh IDE hard disk/CD-ROM interface
1531
		  0 = /dev/hdm		Master: whole disk (or CD-ROM)
1532
		 64 = /dev/hdn		Slave: whole disk (or CD-ROM)
1533

1534
		Partitions are handled the same way as for the first
1535
		interface (see major number 3).
1536

1537
  89 char	I2C bus interface
1538
		  0 = /dev/i2c-0	First I2C adapter
1539
		  1 = /dev/i2c-1	Second I2C adapter
1540
		    ...
1541

1542
  89 block	Eighth IDE hard disk/CD-ROM interface
1543
		  0 = /dev/hdo		Master: whole disk (or CD-ROM)
1544
		 64 = /dev/hdp		Slave: whole disk (or CD-ROM)
1545

1546
		Partitions are handled the same way as for the first
1547
		interface (see major number 3).
1548

1549
  90 char	Memory Technology Device (RAM, ROM, Flash)
1550
		  0 = /dev/mtd0		First MTD (rw)
1551
		  1 = /dev/mtdr0	First MTD (ro)
1552
		    ...
1553
		 30 = /dev/mtd15	16th MTD (rw)
1554
		 31 = /dev/mtdr15	16th MTD (ro)
1555

1556
  90 block	Ninth IDE hard disk/CD-ROM interface
1557
		  0 = /dev/hdq		Master: whole disk (or CD-ROM)
1558
		 64 = /dev/hdr		Slave: whole disk (or CD-ROM)
1559

1560
		Partitions are handled the same way as for the first
1561
		interface (see major number 3).
1562

1563
  91 char	CAN-Bus devices
1564
		  0 = /dev/can0		First CAN-Bus controller
1565
		  1 = /dev/can1		Second CAN-Bus controller
1566
		    ...
1567

1568
  91 block	Tenth IDE hard disk/CD-ROM interface
1569
		  0 = /dev/hds		Master: whole disk (or CD-ROM)
1570
		 64 = /dev/hdt		Slave: whole disk (or CD-ROM)
1571

1572
		Partitions are handled the same way as for the first
1573
		interface (see major number 3).
1574

1575
  92 char	Reserved for ith Kommunikationstechnik MIC ISDN card
1576

1577
  92 block	PPDD encrypted disk driver
1578
		  0 = /dev/ppdd0	First encrypted disk
1579
		  1 = /dev/ppdd1	Second encrypted disk
1580
		    ...
1581

1582
		Partitions are handled in the same way as for IDE
1583
		disks (see major number 3) except that the limit on
1584
		partitions is 15.
1585

1586
  93 char
1587

1588
  93 block	NAND Flash Translation Layer filesystem
1589
		  0 = /dev/nftla	First NFTL layer
1590
		 16 = /dev/nftlb	Second NFTL layer
1591
		    ...
1592
		240 = /dev/nftlp	16th NTFL layer
1593

1594
  94 char
1595

1596
  94 block	IBM S/390 DASD block storage
1597
		  0 = /dev/dasda First DASD device, major
1598
		  1 = /dev/dasda1 First DASD device, block 1
1599
		  2 = /dev/dasda2 First DASD device, block 2
1600
		  3 = /dev/dasda3 First DASD device, block 3
1601
		  4 = /dev/dasdb Second DASD device, major
1602
		  5 = /dev/dasdb1 Second DASD device, block 1
1603
		  6 = /dev/dasdb2 Second DASD device, block 2
1604
		  7 = /dev/dasdb3 Second DASD device, block 3
1605
		    ...
1606

1607
  95 char	IP filter
1608
		  0 = /dev/ipl		Filter control device/log file
1609
		  1 = /dev/ipnat	NAT control device/log file
1610
		  2 = /dev/ipstate	State information log file
1611
		  3 = /dev/ipauth	Authentication control device/log file
1612
		    ...
1613

1614
  96 char	Parallel port ATAPI tape devices
1615
		  0 = /dev/pt0		First parallel port ATAPI tape
1616
		  1 = /dev/pt1		Second parallel port ATAPI tape
1617
		    ...
1618
		128 = /dev/npt0		First p.p. ATAPI tape, no rewind
1619
		129 = /dev/npt1		Second p.p. ATAPI tape, no rewind
1620
		    ...
1621

1622
  96 block	Inverse NAND Flash Translation Layer
1623
		  0 = /dev/inftla First INFTL layer
1624
		 16 = /dev/inftlb Second INFTL layer
1625
		    ...
1626
		240 = /dev/inftlp	16th INTFL layer
1627

1628
  97 char	Parallel port generic ATAPI interface
1629
		  0 = /dev/pg0		First parallel port ATAPI device
1630
		  1 = /dev/pg1		Second parallel port ATAPI device
1631
		  2 = /dev/pg2		Third parallel port ATAPI device
1632
		  3 = /dev/pg3		Fourth parallel port ATAPI device
1633

1634
		These devices support the same API as the generic SCSI
1635
		devices.
1636

1637
  98 char	Control and Measurement Device (comedi)
1638
		  0 = /dev/comedi0	First comedi device
1639
		  1 = /dev/comedi1	Second comedi device
1640
		    ...
1641
		 47 = /dev/comedi47	48th comedi device
1642

1643
		Minors 48 to 255 are reserved for comedi subdevices with
1644
		pathnames of the form "/dev/comediX_subdY", where "X" is the
1645
		minor number of the associated comedi device and "Y" is the
1646
		subdevice number.  These subdevice minors are assigned
1647
		dynamically, so there is no fixed mapping from subdevice
1648
		pathnames to minor numbers.
1649

1650
		See https://www.comedi.org/ for information about the Comedi
1651
		project.
1652

1653
  98 block	User-mode virtual block device
1654
		  0 = /dev/ubda		First user-mode block device
1655
		 16 = /dev/ubdb		Second user-mode block device
1656
		    ...
1657

1658
		Partitions are handled in the same way as for IDE
1659
		disks (see major number 3) except that the limit on
1660
		partitions is 15.
1661

1662
		This device is used by the user-mode virtual kernel port.
1663

1664
  99 char	Raw parallel ports
1665
		  0 = /dev/parport0	First parallel port
1666
		  1 = /dev/parport1	Second parallel port
1667
		    ...
1668

1669
  99 block	JavaStation flash disk
1670
		  0 = /dev/jsfd		JavaStation flash disk
1671

1672
 100 char	Telephony for Linux
1673
		  0 = /dev/phone0	First telephony device
1674
		  1 = /dev/phone1	Second telephony device
1675
		    ...
1676

1677
 101 char	Motorola DSP 56xxx board
1678
		  0 = /dev/mdspstat	Status information
1679
		  1 = /dev/mdsp1	First DSP board I/O controls
1680
		    ...
1681
		 16 = /dev/mdsp16	16th DSP board I/O controls
1682

1683
 101 block	AMI HyperDisk RAID controller
1684
		  0 = /dev/amiraid/ar0	First array whole disk
1685
		 16 = /dev/amiraid/ar1	Second array whole disk
1686
		    ...
1687
		240 = /dev/amiraid/ar15	16th array whole disk
1688

1689
		For each device, partitions are added as:
1690
		  0 = /dev/amiraid/ar?	  Whole disk
1691
		  1 = /dev/amiraid/ar?p1  First partition
1692
		  2 = /dev/amiraid/ar?p2  Second partition
1693
		    ...
1694
		 15 = /dev/amiraid/ar?p15 15th partition
1695

1696
 102 char
1697

1698
 102 block	Compressed block device
1699
		  0 = /dev/cbd/a	First compressed block device, whole device
1700
		 16 = /dev/cbd/b	Second compressed block device, whole device
1701
		    ...
1702
		240 = /dev/cbd/p	16th compressed block device, whole device
1703

1704
		Partitions are handled in the same way as for IDE
1705
		disks (see major number 3) except that the limit on
1706
		partitions is 15.
1707

1708
 103 char	Arla network file system
1709
		  0 = /dev/nnpfs0	First NNPFS device
1710
		  1 = /dev/nnpfs1	Second NNPFS device
1711

1712
		Arla is a free clone of the Andrew File System, AFS.
1713
		The NNPFS device gives user mode filesystem
1714
		implementations a kernel presence for caching and easy
1715
		mounting.  For more information about the project,
1716
		write to <[email protected]> or see
1717
		https://www.stacken.kth.se/project/arla/
1718

1719
 103 block	Audit device
1720
		  0 = /dev/audit	Audit device
1721

1722
 104 char	Flash BIOS support
1723

1724
 104 block	Compaq Next Generation Drive Array, first controller
1725
		  0 = /dev/cciss/c0d0	First logical drive, whole disk
1726
		 16 = /dev/cciss/c0d1	Second logical drive, whole disk
1727
		    ...
1728
		240 = /dev/cciss/c0d15	16th logical drive, whole disk
1729

1730
		Partitions are handled the same way as for Mylex
1731
		DAC960 (see major number 48) except that the limit on
1732
		partitions is 15.
1733

1734
 105 char	Comtrol VS-1000 serial controller
1735
		  0 = /dev/ttyV0	First VS-1000 port
1736
		  1 = /dev/ttyV1	Second VS-1000 port
1737
		    ...
1738

1739
 105 block	Compaq Next Generation Drive Array, second controller
1740
		  0 = /dev/cciss/c1d0	First logical drive, whole disk
1741
		 16 = /dev/cciss/c1d1	Second logical drive, whole disk
1742
		    ...
1743
		240 = /dev/cciss/c1d15	16th logical drive, whole disk
1744

1745
		Partitions are handled the same way as for Mylex
1746
		DAC960 (see major number 48) except that the limit on
1747
		partitions is 15.
1748

1749
 106 char	Comtrol VS-1000 serial controller - alternate devices
1750
		  0 = /dev/cuv0		First VS-1000 port
1751
		  1 = /dev/cuv1		Second VS-1000 port
1752
		    ...
1753

1754
 106 block	Compaq Next Generation Drive Array, third controller
1755
		  0 = /dev/cciss/c2d0	First logical drive, whole disk
1756
		 16 = /dev/cciss/c2d1	Second logical drive, whole disk
1757
		    ...
1758
		240 = /dev/cciss/c2d15	16th logical drive, whole disk
1759

1760
		Partitions are handled the same way as for Mylex
1761
		DAC960 (see major number 48) except that the limit on
1762
		partitions is 15.
1763

1764
 107 char	3Dfx Voodoo Graphics device
1765
		  0 = /dev/3dfx		Primary 3Dfx graphics device
1766

1767
 107 block	Compaq Next Generation Drive Array, fourth controller
1768
		  0 = /dev/cciss/c3d0	First logical drive, whole disk
1769
		 16 = /dev/cciss/c3d1	Second logical drive, whole disk
1770
		    ...
1771
		240 = /dev/cciss/c3d15	16th logical drive, whole disk
1772

1773
		Partitions are handled the same way as for Mylex
1774
		DAC960 (see major number 48) except that the limit on
1775
		partitions is 15.
1776

1777
 108 char	Device independent PPP interface
1778
		  0 = /dev/ppp		Device independent PPP interface
1779

1780
 108 block	Compaq Next Generation Drive Array, fifth controller
1781
		  0 = /dev/cciss/c4d0	First logical drive, whole disk
1782
		 16 = /dev/cciss/c4d1	Second logical drive, whole disk
1783
		    ...
1784
		240 = /dev/cciss/c4d15	16th logical drive, whole disk
1785

1786
		Partitions are handled the same way as for Mylex
1787
		DAC960 (see major number 48) except that the limit on
1788
		partitions is 15.
1789

1790
 109 char	Reserved for logical volume manager
1791

1792
 109 block	Compaq Next Generation Drive Array, sixth controller
1793
		  0 = /dev/cciss/c5d0	First logical drive, whole disk
1794
		 16 = /dev/cciss/c5d1	Second logical drive, whole disk
1795
		    ...
1796
		240 = /dev/cciss/c5d15	16th logical drive, whole disk
1797

1798
		Partitions are handled the same way as for Mylex
1799
		DAC960 (see major number 48) except that the limit on
1800
		partitions is 15.
1801

1802
 110 char	miroMEDIA Surround board
1803
		  0 = /dev/srnd0	First miroMEDIA Surround board
1804
		  1 = /dev/srnd1	Second miroMEDIA Surround board
1805
		    ...
1806

1807
 110 block	Compaq Next Generation Drive Array, seventh controller
1808
		  0 = /dev/cciss/c6d0	First logical drive, whole disk
1809
		 16 = /dev/cciss/c6d1	Second logical drive, whole disk
1810
		    ...
1811
		240 = /dev/cciss/c6d15	16th logical drive, whole disk
1812

1813
		Partitions are handled the same way as for Mylex
1814
		DAC960 (see major number 48) except that the limit on
1815
		partitions is 15.
1816

1817
 111 char
1818

1819
 111 block	Compaq Next Generation Drive Array, eighth controller
1820
		  0 = /dev/cciss/c7d0	First logical drive, whole disk
1821
		 16 = /dev/cciss/c7d1	Second logical drive, whole disk
1822
		    ...
1823
		240 = /dev/cciss/c7d15	16th logical drive, whole disk
1824

1825
		Partitions are handled the same way as for Mylex
1826
		DAC960 (see major number 48) except that the limit on
1827
		partitions is 15.
1828

1829
 112 char	ISI serial card
1830
		  0 = /dev/ttyM0	First ISI port
1831
		  1 = /dev/ttyM1	Second ISI port
1832
		    ...
1833

1834
		There is currently a device-naming conflict between
1835
		these and PAM multimodems (major 78).
1836

1837
 112 block	IBM iSeries virtual disk
1838
		  0 = /dev/iseries/vda	First virtual disk, whole disk
1839
		  8 = /dev/iseries/vdb	Second virtual disk, whole disk
1840
		    ...
1841
		200 = /dev/iseries/vdz	26th virtual disk, whole disk
1842
		208 = /dev/iseries/vdaa	27th virtual disk, whole disk
1843
		    ...
1844
		248 = /dev/iseries/vdaf	32nd virtual disk, whole disk
1845

1846
		Partitions are handled in the same way as for IDE
1847
		disks (see major number 3) except that the limit on
1848
		partitions is 7.
1849

1850
 113 char	ISI serial card - alternate devices
1851
		  0 = /dev/cum0		Callout device for ttyM0
1852
		  1 = /dev/cum1		Callout device for ttyM1
1853
		    ...
1854

1855
 113 block	IBM iSeries virtual CD-ROM
1856
		  0 = /dev/iseries/vcda	First virtual CD-ROM
1857
		  1 = /dev/iseries/vcdb	Second virtual CD-ROM
1858
		    ...
1859

1860
 114 char	Picture Elements ISE board
1861
		  0 = /dev/ise0		First ISE board
1862
		  1 = /dev/ise1		Second ISE board
1863
		    ...
1864
		128 = /dev/isex0	Control node for first ISE board
1865
		129 = /dev/isex1	Control node for second ISE board
1866
		    ...
1867

1868
		The ISE board is an embedded computer, optimized for
1869
		image processing. The /dev/iseN nodes are the general
1870
		I/O access to the board, the /dev/isex0 nodes command
1871
		nodes used to control the board.
1872

1873
 114 block       IDE BIOS powered software RAID interfaces such as the
1874
		Promise Fastrak
1875

1876
		   0 = /dev/ataraid/d0
1877
		   1 = /dev/ataraid/d0p1
1878
		   2 = /dev/ataraid/d0p2
1879
		  ...
1880
		  16 = /dev/ataraid/d1
1881
		  17 = /dev/ataraid/d1p1
1882
		  18 = /dev/ataraid/d1p2
1883
		  ...
1884
		 255 = /dev/ataraid/d15p15
1885

1886
		Partitions are handled in the same way as for IDE
1887
		disks (see major number 3) except that the limit on
1888
		partitions is 15.
1889

1890
 115 char	TI link cable devices (115 was formerly the console driver speaker)
1891
		  0 = /dev/tipar0    Parallel cable on first parallel port
1892
		  ...
1893
		  7 = /dev/tipar7    Parallel cable on seventh parallel port
1894

1895
		  8 = /dev/tiser0    Serial cable on first serial port
1896
		  ...
1897
		 15 = /dev/tiser7    Serial cable on seventh serial port
1898

1899
		 16 = /dev/tiusb0    First USB cable
1900
		  ...
1901
		 47 = /dev/tiusb31   32nd USB cable
1902

1903
 115 block       NetWare (NWFS) Devices (0-255)
1904

1905
		The NWFS (NetWare) devices are used to present a
1906
		collection of NetWare Mirror Groups or NetWare
1907
		Partitions as a logical storage segment for
1908
		use in mounting NetWare volumes.  A maximum of
1909
		 256 NetWare volumes can be supported in a single
1910
		machine.
1911

1912
		http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1913

1914
		 0 = /dev/nwfs/v0    First NetWare (NWFS) Logical Volume
1915
		 1 = /dev/nwfs/v1    Second NetWare (NWFS) Logical Volume
1916
		 2 = /dev/nwfs/v2    Third NetWare (NWFS) Logical Volume
1917
		      ...
1918
		 255 = /dev/nwfs/v255    Last NetWare (NWFS) Logical Volume
1919

1920
 116 char	Advanced Linux Sound Driver (ALSA)
1921

1922
 116 block       MicroMemory battery backed RAM adapter (NVRAM)
1923
		Supports 16 boards, 15 partitions each.
1924
		Requested by neilb at cse.unsw.edu.au.
1925

1926
		 0 = /dev/umem/d0      Whole of first board
1927
		 1 = /dev/umem/d0p1    First partition of first board
1928
		 2 = /dev/umem/d0p2    Second partition of first board
1929
		15 = /dev/umem/d0p15   15th partition of first board
1930

1931
		16 = /dev/umem/d1      Whole of second board
1932
		17 = /dev/umem/d1p1    First partition of second board
1933
		    ...
1934
		255= /dev/umem/d15p15  15th partition of 16th board.
1935

1936
 117 char	[REMOVED] COSA/SRP synchronous serial card
1937
		  0 = /dev/cosa0c0	1st board, 1st channel
1938
		  1 = /dev/cosa0c1	1st board, 2nd channel
1939
		    ...
1940
		 16 = /dev/cosa1c0	2nd board, 1st channel
1941
		 17 = /dev/cosa1c1	2nd board, 2nd channel
1942
		    ...
1943

1944
 117 block       Enterprise Volume Management System (EVMS)
1945

1946
		The EVMS driver uses a layered, plug-in model to provide
1947
		unparalleled flexibility and extensibility in managing
1948
		storage.  This allows for easy expansion or customization
1949
		of various levels of volume management.  Requested by
1950
		Mark Peloquin (peloquin at us.ibm.com).
1951

1952
		Note: EVMS populates and manages all the devnodes in
1953
		/dev/evms.
1954

1955
		http://sf.net/projects/evms
1956

1957
		   0 = /dev/evms/block_device   EVMS block device
1958
		   1 = /dev/evms/legacyname1    First EVMS legacy device
1959
		   2 = /dev/evms/legacyname2    Second EVMS legacy device
1960
		    ...
1961
		    Both ranges can grow (down or up) until they meet.
1962
		    ...
1963
		 254 = /dev/evms/EVMSname2      Second EVMS native device
1964
		 255 = /dev/evms/EVMSname1      First EVMS native device
1965

1966
		Note: legacyname(s) are derived from the normal legacy
1967
		device names.  For example, /dev/hda5 would become
1968
		/dev/evms/hda5.
1969

1970
 118 char	IBM Cryptographic Accelerator
1971
		  0 = /dev/ica	Virtual interface to all IBM Crypto Accelerators
1972
		  1 = /dev/ica0	IBMCA Device 0
1973
		  2 = /dev/ica1	IBMCA Device 1
1974
		    ...
1975

1976
 119 char	VMware virtual network control
1977
		  0 = /dev/vnet0	1st virtual network
1978
		  1 = /dev/vnet1	2nd virtual network
1979
		    ...
1980

1981
 120-127 char	LOCAL/EXPERIMENTAL USE
1982

1983
 120-127 block	LOCAL/EXPERIMENTAL USE
1984
		Allocated for local/experimental use.  For devices not
1985
		assigned official numbers, these ranges should be
1986
		used in order to avoid conflicting with future assignments.
1987

1988
 128-135 char	Unix98 PTY masters
1989

1990
		These devices should not have corresponding device
1991
		nodes; instead they should be accessed through the
1992
		/dev/ptmx cloning interface.
1993

1994
 128 block       SCSI disk devices (128-143)
1995
		   0 = /dev/sddy         129th SCSI disk whole disk
1996
		  16 = /dev/sddz         130th SCSI disk whole disk
1997
		  32 = /dev/sdea         131th SCSI disk whole disk
1998
		    ...
1999
		 240 = /dev/sden         144th SCSI disk whole disk
2000

2001
		Partitions are handled in the same way as for IDE
2002
		disks (see major number 3) except that the limit on
2003
		partitions is 15.
2004

2005
 129 block       SCSI disk devices (144-159)
2006
		   0 = /dev/sdeo         145th SCSI disk whole disk
2007
		  16 = /dev/sdep         146th SCSI disk whole disk
2008
		  32 = /dev/sdeq         147th SCSI disk whole disk
2009
		    ...
2010
		 240 = /dev/sdfd         160th SCSI disk whole disk
2011

2012
		Partitions are handled in the same way as for IDE
2013
		disks (see major number 3) except that the limit on
2014
		partitions is 15.
2015

2016
 130 char 	(Misc devices)
2017

2018
 130 block       SCSI disk devices (160-175)
2019
		   0 = /dev/sdfe         161st SCSI disk whole disk
2020
		  16 = /dev/sdff         162nd SCSI disk whole disk
2021
		  32 = /dev/sdfg         163rd SCSI disk whole disk
2022
		    ...
2023
		 240 = /dev/sdft         176th SCSI disk whole disk
2024

2025
		Partitions are handled in the same way as for IDE
2026
		disks (see major number 3) except that the limit on
2027
		partitions is 15.
2028

2029
 131 block       SCSI disk devices (176-191)
2030
		   0 = /dev/sdfu         177th SCSI disk whole disk
2031
		  16 = /dev/sdfv         178th SCSI disk whole disk
2032
		  32 = /dev/sdfw         179th SCSI disk whole disk
2033
		    ...
2034
		 240 = /dev/sdgj         192nd SCSI disk whole disk
2035

2036
		Partitions are handled in the same way as for IDE
2037
		disks (see major number 3) except that the limit on
2038
		partitions is 15.
2039

2040
 132 block       SCSI disk devices (192-207)
2041
		   0 = /dev/sdgk         193rd SCSI disk whole disk
2042
		  16 = /dev/sdgl         194th SCSI disk whole disk
2043
		  32 = /dev/sdgm         195th SCSI disk whole disk
2044
		    ...
2045
		 240 = /dev/sdgz         208th SCSI disk whole disk
2046

2047
		Partitions are handled in the same way as for IDE
2048
		disks (see major number 3) except that the limit on
2049
		partitions is 15.
2050

2051
 133 block       SCSI disk devices (208-223)
2052
		   0 = /dev/sdha         209th SCSI disk whole disk
2053
		  16 = /dev/sdhb         210th SCSI disk whole disk
2054
		  32 = /dev/sdhc         211th SCSI disk whole disk
2055
		    ...
2056
		 240 = /dev/sdhp         224th SCSI disk whole disk
2057

2058
		Partitions are handled in the same way as for IDE
2059
		disks (see major number 3) except that the limit on
2060
		partitions is 15.
2061

2062
 134 block       SCSI disk devices (224-239)
2063
		   0 = /dev/sdhq         225th SCSI disk whole disk
2064
		  16 = /dev/sdhr         226th SCSI disk whole disk
2065
		  32 = /dev/sdhs         227th SCSI disk whole disk
2066
		    ...
2067
		 240 = /dev/sdif         240th SCSI disk whole disk
2068

2069
		Partitions are handled in the same way as for IDE
2070
		disks (see major number 3) except that the limit on
2071
		partitions is 15.
2072

2073
 135 block       SCSI disk devices (240-255)
2074
		   0 = /dev/sdig         241st SCSI disk whole disk
2075
		  16 = /dev/sdih         242nd SCSI disk whole disk
2076
		  32 = /dev/sdih         243rd SCSI disk whole disk
2077
		    ...
2078
		 240 = /dev/sdiv         256th SCSI disk whole disk
2079

2080
		Partitions are handled in the same way as for IDE
2081
		disks (see major number 3) except that the limit on
2082
		partitions is 15.
2083

2084
 136-143 char	Unix98 PTY slaves
2085
		  0 = /dev/pts/0	First Unix98 pseudo-TTY
2086
		  1 = /dev/pts/1	Second Unix98 pseudo-TTY
2087
		    ...
2088

2089
		These device nodes are automatically generated with
2090
		the proper permissions and modes by mounting the
2091
		devpts filesystem onto /dev/pts with the appropriate
2092
		mount options (distribution dependent, however, on
2093
		*most* distributions the appropriate options are
2094
		"mode=0620,gid=<gid of the "tty" group>".)
2095

2096
 136 block	Mylex DAC960 PCI RAID controller; ninth controller
2097
		  0 = /dev/rd/c8d0	First disk, whole disk
2098
		  8 = /dev/rd/c8d1	Second disk, whole disk
2099
		    ...
2100
		248 = /dev/rd/c8d31	32nd disk, whole disk
2101

2102
		Partitions are handled as for major 48.
2103

2104
 137 block	Mylex DAC960 PCI RAID controller; tenth controller
2105
		  0 = /dev/rd/c9d0	First disk, whole disk
2106
		  8 = /dev/rd/c9d1	Second disk, whole disk
2107
		    ...
2108
		248 = /dev/rd/c9d31	32nd disk, whole disk
2109

2110
		Partitions are handled as for major 48.
2111

2112
 138 block	Mylex DAC960 PCI RAID controller; eleventh controller
2113
		  0 = /dev/rd/c10d0	First disk, whole disk
2114
		  8 = /dev/rd/c10d1	Second disk, whole disk
2115
		    ...
2116
		248 = /dev/rd/c10d31	32nd disk, whole disk
2117

2118
		Partitions are handled as for major 48.
2119

2120
 139 block	Mylex DAC960 PCI RAID controller; twelfth controller
2121
		  0 = /dev/rd/c11d0	First disk, whole disk
2122
		  8 = /dev/rd/c11d1	Second disk, whole disk
2123
		    ...
2124
		248 = /dev/rd/c11d31	32nd disk, whole disk
2125

2126
		Partitions are handled as for major 48.
2127

2128
 140 block	Mylex DAC960 PCI RAID controller; thirteenth controller
2129
		  0 = /dev/rd/c12d0	First disk, whole disk
2130
		  8 = /dev/rd/c12d1	Second disk, whole disk
2131
		    ...
2132
		248 = /dev/rd/c12d31	32nd disk, whole disk
2133

2134
		Partitions are handled as for major 48.
2135

2136
 141 block	Mylex DAC960 PCI RAID controller; fourteenth controller
2137
		  0 = /dev/rd/c13d0	First disk, whole disk
2138
		  8 = /dev/rd/c13d1	Second disk, whole disk
2139
		    ...
2140
		248 = /dev/rd/c13d31	32nd disk, whole disk
2141

2142
		Partitions are handled as for major 48.
2143

2144
 142 block	Mylex DAC960 PCI RAID controller; fifteenth controller
2145
		  0 = /dev/rd/c14d0	First disk, whole disk
2146
		  8 = /dev/rd/c14d1	Second disk, whole disk
2147
		    ...
2148
		248 = /dev/rd/c14d31	32nd disk, whole disk
2149

2150
		Partitions are handled as for major 48.
2151

2152
 143 block	Mylex DAC960 PCI RAID controller; sixteenth controller
2153
		  0 = /dev/rd/c15d0	First disk, whole disk
2154
		  8 = /dev/rd/c15d1	Second disk, whole disk
2155
		    ...
2156
		248 = /dev/rd/c15d31	32nd disk, whole disk
2157

2158
		Partitions are handled as for major 48.
2159

2160
 144 char	Encapsulated PPP
2161
		  0 = /dev/pppox0	First PPP over Ethernet
2162
		    ...
2163
		 63 = /dev/pppox63	64th PPP over Ethernet
2164

2165
		This is primarily used for ADSL.
2166

2167
		The SST 5136-DN DeviceNet interface driver has been
2168
		relocated to major 183 due to an unfortunate conflict.
2169

2170
 144 block	Expansion Area #1 for more non-device (e.g. NFS) mounts
2171
		  0 = mounted device 256
2172
		255 = mounted device 511
2173

2174
 145 char	SAM9407-based soundcard
2175
		  0 = /dev/sam0_mixer
2176
		  1 = /dev/sam0_sequencer
2177
		  2 = /dev/sam0_midi00
2178
		  3 = /dev/sam0_dsp
2179
		  4 = /dev/sam0_audio
2180
		  6 = /dev/sam0_sndstat
2181
		 18 = /dev/sam0_midi01
2182
		 34 = /dev/sam0_midi02
2183
		 50 = /dev/sam0_midi03
2184
		 64 = /dev/sam1_mixer
2185
		    ...
2186
		128 = /dev/sam2_mixer
2187
		    ...
2188
		192 = /dev/sam3_mixer
2189
		    ...
2190

2191
		Device functions match OSS, but offer a number of
2192
		addons, which are sam9407 specific.  OSS can be
2193
		operated simultaneously, taking care of the codec.
2194

2195
 145 block	Expansion Area #2 for more non-device (e.g. NFS) mounts
2196
		  0 = mounted device 512
2197
		255 = mounted device 767
2198

2199
 146 char	SYSTRAM SCRAMNet mirrored-memory network
2200
		  0 = /dev/scramnet0	First SCRAMNet device
2201
		  1 = /dev/scramnet1	Second SCRAMNet device
2202
		    ...
2203

2204
 146 block	Expansion Area #3 for more non-device (e.g. NFS) mounts
2205
		  0 = mounted device 768
2206
		255 = mounted device 1023
2207

2208
 147 char	Aureal Semiconductor Vortex Audio device
2209
		  0 = /dev/aureal0	First Aureal Vortex
2210
		  1 = /dev/aureal1	Second Aureal Vortex
2211
		    ...
2212

2213
 147 block	Distributed Replicated Block Device (DRBD)
2214
		  0 = /dev/drbd0	First DRBD device
2215
		  1 = /dev/drbd1	Second DRBD device
2216
		    ...
2217

2218
 148 char	Technology Concepts serial card
2219
		  0 = /dev/ttyT0	First TCL port
2220
		  1 = /dev/ttyT1	Second TCL port
2221
		    ...
2222

2223
 149 char	Technology Concepts serial card - alternate devices
2224
		  0 = /dev/cut0		Callout device for ttyT0
2225
		  1 = /dev/cut0		Callout device for ttyT1
2226
		    ...
2227

2228
 150 char	Real-Time Linux FIFOs
2229
		  0 = /dev/rtf0		First RTLinux FIFO
2230
		  1 = /dev/rtf1		Second RTLinux FIFO
2231
		    ...
2232

2233
 151 char	DPT I2O SmartRaid V controller
2234
		  0 = /dev/dpti0	First DPT I2O adapter
2235
		  1 = /dev/dpti1	Second DPT I2O adapter
2236
		    ...
2237

2238
 152 char	EtherDrive Control Device
2239
		  0 = /dev/etherd/ctl	Connect/Disconnect an EtherDrive
2240
		  1 = /dev/etherd/err	Monitor errors
2241
		  2 = /dev/etherd/raw	Raw AoE packet monitor
2242

2243
 152 block	EtherDrive Block Devices
2244
		  0 = /dev/etherd/0	EtherDrive 0
2245
		    ...
2246
		255 = /dev/etherd/255	EtherDrive 255
2247

2248
 153 char	SPI Bus Interface (sometimes referred to as MicroWire)
2249
		  0 = /dev/spi0		First SPI device on the bus
2250
		  1 = /dev/spi1		Second SPI device on the bus
2251
		    ...
2252
		 15 = /dev/spi15	Sixteenth SPI device on the bus
2253

2254
 153 block	Enhanced Metadisk RAID (EMD) storage units
2255
		  0 = /dev/emd/0	First unit
2256
		  1 = /dev/emd/0p1	Partition 1 on First unit
2257
		  2 = /dev/emd/0p2	Partition 2 on First unit
2258
		    ...
2259
		 15 = /dev/emd/0p15	Partition 15 on First unit
2260

2261
		 16 = /dev/emd/1	Second unit
2262
		 32 = /dev/emd/2	Third unit
2263
		    ...
2264
		240 = /dev/emd/15	Sixteenth unit
2265

2266
		Partitions are handled in the same way as for IDE
2267
		disks (see major number 3) except that the limit on
2268
		partitions is 15.
2269

2270
 154 char	Specialix RIO serial card
2271
		  0 = /dev/ttySR0	First RIO port
2272
		    ...
2273
		255 = /dev/ttySR255	256th RIO port
2274

2275
 155 char	Specialix RIO serial card - alternate devices
2276
		  0 = /dev/cusr0	Callout device for ttySR0
2277
		    ...
2278
		255 = /dev/cusr255	Callout device for ttySR255
2279

2280
 156 char	Specialix RIO serial card
2281
		  0 = /dev/ttySR256	257th RIO port
2282
		    ...
2283
		255 = /dev/ttySR511	512th RIO port
2284

2285
 157 char	Specialix RIO serial card - alternate devices
2286
		  0 = /dev/cusr256	Callout device for ttySR256
2287
		    ...
2288
		255 = /dev/cusr511	Callout device for ttySR511
2289

2290
 158 char	Dialogic GammaLink fax driver
2291
		  0 = /dev/gfax0	GammaLink channel 0
2292
		  1 = /dev/gfax1	GammaLink channel 1
2293
		    ...
2294

2295
 159 char	RESERVED
2296

2297
 159 block	RESERVED
2298

2299
 160 char	General Purpose Instrument Bus (GPIB)
2300
		  0 = /dev/gpib0	First GPIB bus
2301
		  1 = /dev/gpib1	Second GPIB bus
2302
		    ...
2303

2304
 160 block       Carmel 8-port SATA Disks on First Controller
2305
		  0 = /dev/carmel/0     SATA disk 0 whole disk
2306
		  1 = /dev/carmel/0p1   SATA disk 0 partition 1
2307
		    ...
2308
		 31 = /dev/carmel/0p31  SATA disk 0 partition 31
2309

2310
		 32 = /dev/carmel/1     SATA disk 1 whole disk
2311
		 64 = /dev/carmel/2     SATA disk 2 whole disk
2312
		    ...
2313
		224 = /dev/carmel/7     SATA disk 7 whole disk
2314

2315
		Partitions are handled in the same way as for IDE
2316
		disks (see major number 3) except that the limit on
2317
		partitions is 31.
2318

2319
 161 char	IrCOMM devices (IrDA serial/parallel emulation)
2320
		  0 = /dev/ircomm0	First IrCOMM device
2321
		  1 = /dev/ircomm1	Second IrCOMM device
2322
		    ...
2323
		 16 = /dev/irlpt0	First IrLPT device
2324
		 17 = /dev/irlpt1	Second IrLPT device
2325
		    ...
2326

2327
 161 block       Carmel 8-port SATA Disks on Second Controller
2328
		  0 = /dev/carmel/8     SATA disk 8 whole disk
2329
		  1 = /dev/carmel/8p1   SATA disk 8 partition 1
2330
		    ...
2331
		 31 = /dev/carmel/8p31  SATA disk 8 partition 31
2332

2333
		 32 = /dev/carmel/9     SATA disk 9 whole disk
2334
		 64 = /dev/carmel/10    SATA disk 10 whole disk
2335
		    ...
2336
		224 = /dev/carmel/15    SATA disk 15 whole disk
2337

2338
		Partitions are handled in the same way as for IDE
2339
		disks (see major number 3) except that the limit on
2340
		partitions is 31.
2341

2342
 162 char	Used for (now removed) raw block device interface
2343

2344
 163 char
2345

2346
 164 char	Chase Research AT/PCI-Fast serial card
2347
		  0 = /dev/ttyCH0	AT/PCI-Fast board 0, port 0
2348
		    ...
2349
		 15 = /dev/ttyCH15	AT/PCI-Fast board 0, port 15
2350
		 16 = /dev/ttyCH16	AT/PCI-Fast board 1, port 0
2351
		    ...
2352
		 31 = /dev/ttyCH31	AT/PCI-Fast board 1, port 15
2353
		 32 = /dev/ttyCH32	AT/PCI-Fast board 2, port 0
2354
		    ...
2355
		 47 = /dev/ttyCH47	AT/PCI-Fast board 2, port 15
2356
		 48 = /dev/ttyCH48	AT/PCI-Fast board 3, port 0
2357
		    ...
2358
		 63 = /dev/ttyCH63	AT/PCI-Fast board 3, port 15
2359

2360
 165 char	Chase Research AT/PCI-Fast serial card - alternate devices
2361
		  0 = /dev/cuch0	Callout device for ttyCH0
2362
		    ...
2363
		 63 = /dev/cuch63	Callout device for ttyCH63
2364

2365
 166 char	ACM USB modems
2366
		  0 = /dev/ttyACM0	First ACM modem
2367
		  1 = /dev/ttyACM1	Second ACM modem
2368
		    ...
2369

2370
 167 char	ACM USB modems - alternate devices
2371
		  0 = /dev/cuacm0	Callout device for ttyACM0
2372
		  1 = /dev/cuacm1	Callout device for ttyACM1
2373
		    ...
2374

2375
 168 char	Eracom CSA7000 PCI encryption adaptor
2376
		  0 = /dev/ecsa0	First CSA7000
2377
		  1 = /dev/ecsa1	Second CSA7000
2378
		    ...
2379

2380
 169 char	Eracom CSA8000 PCI encryption adaptor
2381
		  0 = /dev/ecsa8-0	First CSA8000
2382
		  1 = /dev/ecsa8-1	Second CSA8000
2383
		    ...
2384

2385
 170 char	AMI MegaRAC remote access controller
2386
		  0 = /dev/megarac0	First MegaRAC card
2387
		  1 = /dev/megarac1	Second MegaRAC card
2388
		    ...
2389

2390
 171 char	Reserved for IEEE 1394 (Firewire)
2391

2392
 172 char	Moxa Intellio serial card
2393
		  0 = /dev/ttyMX0	First Moxa port
2394
		  1 = /dev/ttyMX1	Second Moxa port
2395
		    ...
2396
		127 = /dev/ttyMX127	128th Moxa port
2397
		128 = /dev/moxactl	Moxa control port
2398

2399
 173 char	Moxa Intellio serial card - alternate devices
2400
		  0 = /dev/cumx0	Callout device for ttyMX0
2401
		  1 = /dev/cumx1	Callout device for ttyMX1
2402
		    ...
2403
		127 = /dev/cumx127	Callout device for ttyMX127
2404

2405
 174 char	SmartIO serial card
2406
		  0 = /dev/ttySI0	First SmartIO port
2407
		  1 = /dev/ttySI1	Second SmartIO port
2408
		    ...
2409

2410
 175 char	SmartIO serial card - alternate devices
2411
		  0 = /dev/cusi0	Callout device for ttySI0
2412
		  1 = /dev/cusi1	Callout device for ttySI1
2413
		    ...
2414

2415
 176 char	nCipher nFast PCI crypto accelerator
2416
		  0 = /dev/nfastpci0	First nFast PCI device
2417
		  1 = /dev/nfastpci1	First nFast PCI device
2418
		    ...
2419

2420
 177 char	TI PCILynx memory spaces
2421
		  0 = /dev/pcilynx/aux0	 AUX space of first PCILynx card
2422
		    ...
2423
		 15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2424
		 16 = /dev/pcilynx/rom0	 ROM space of first PCILynx card
2425
		    ...
2426
		 31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2427
		 32 = /dev/pcilynx/ram0	 RAM space of first PCILynx card
2428
		    ...
2429
		 47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2430

2431
 178 char	Giganet cLAN1xxx virtual interface adapter
2432
		  0 = /dev/clanvi0	First cLAN adapter
2433
		  1 = /dev/clanvi1	Second cLAN adapter
2434
		    ...
2435

2436
 179 block       MMC block devices
2437
		  0 = /dev/mmcblk0      First SD/MMC card
2438
		  1 = /dev/mmcblk0p1    First partition on first MMC card
2439
		  8 = /dev/mmcblk1      Second SD/MMC card
2440
		    ...
2441

2442
		The start of next SD/MMC card can be configured with
2443
		CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2444
		time using the mmcblk.perdev_minors option. That would
2445
		bump the offset between each card to be the configured
2446
		value instead of the default 8.
2447

2448
 179 char	CCube DVXChip-based PCI products
2449
		  0 = /dev/dvxirq0	First DVX device
2450
		  1 = /dev/dvxirq1	Second DVX device
2451
		    ...
2452

2453
 180 char	USB devices
2454
		  0 = /dev/usb/lp0	First USB printer
2455
		    ...
2456
		 15 = /dev/usb/lp15	16th USB printer
2457
		 48 = /dev/usb/scanner0	First USB scanner
2458
		    ...
2459
		 63 = /dev/usb/scanner15 16th USB scanner
2460
		 64 = /dev/usb/rio500	Diamond Rio 500
2461
		 65 = /dev/usb/usblcd	USBLCD Interface ([email protected])
2462
		 66 = /dev/usb/cpad0	Synaptics cPad (mouse/LCD)
2463
		 96 = /dev/usb/hiddev0	1st USB HID device
2464
		    ...
2465
		111 = /dev/usb/hiddev15	16th USB HID device
2466
		112 = /dev/usb/auer0	1st auerswald ISDN device
2467
		    ...
2468
		127 = /dev/usb/auer15	16th auerswald ISDN device
2469
		128 = /dev/usb/brlvgr0	First Braille Voyager device
2470
		    ...
2471
		131 = /dev/usb/brlvgr3	Fourth Braille Voyager device
2472
		132 = /dev/usb/idmouse	ID Mouse (fingerprint scanner) device
2473
		133 = /dev/usb/sisusbvga1	First SiSUSB VGA device
2474
		    ...
2475
		140 = /dev/usb/sisusbvga8	Eighth SISUSB VGA device
2476
		144 = /dev/usb/lcd	USB LCD device
2477
		160 = /dev/usb/legousbtower0	1st USB Legotower device
2478
		    ...
2479
		175 = /dev/usb/legousbtower15	16th USB Legotower device
2480
		176 = /dev/usb/usbtmc1	First USB TMC device
2481
		   ...
2482
		191 = /dev/usb/usbtmc16	16th USB TMC device
2483
		192 = /dev/usb/yurex1	First USB Yurex device
2484
		   ...
2485
		209 = /dev/usb/yurex16	16th USB Yurex device
2486

2487
 180 block	USB block devices
2488
		  0 = /dev/uba		First USB block device
2489
		  8 = /dev/ubb		Second USB block device
2490
		 16 = /dev/ubc		Third USB block device
2491
		    ...
2492

2493
 181 char	Conrad Electronic parallel port radio clocks
2494
		  0 = /dev/pcfclock0	First Conrad radio clock
2495
		  1 = /dev/pcfclock1	Second Conrad radio clock
2496
		    ...
2497

2498
 182 char	Picture Elements THR2 binarizer
2499
		  0 = /dev/pethr0	First THR2 board
2500
		  1 = /dev/pethr1	Second THR2 board
2501
		    ...
2502

2503
 183 char	SST 5136-DN DeviceNet interface
2504
		  0 = /dev/ss5136dn0	First DeviceNet interface
2505
		  1 = /dev/ss5136dn1	Second DeviceNet interface
2506
		    ...
2507

2508
		This device used to be assigned to major number 144.
2509
		It had to be moved due to an unfortunate conflict.
2510

2511
 184 char	Picture Elements' video simulator/sender
2512
		  0 = /dev/pevss0	First sender board
2513
		  1 = /dev/pevss1	Second sender board
2514
		    ...
2515

2516
 185 char	InterMezzo high availability file system
2517
		  0 = /dev/intermezzo0	First cache manager
2518
		  1 = /dev/intermezzo1	Second cache manager
2519
		    ...
2520

2521
		See http://web.archive.org/web/20080115195241/
2522
		http://inter-mezzo.org/index.html
2523

2524
 186 char	Object-based storage control device
2525
		  0 = /dev/obd0		First obd control device
2526
		  1 = /dev/obd1		Second obd control device
2527
		    ...
2528

2529
		See ftp://ftp.lustre.org/pub/obd for code and information.
2530

2531
 187 char	DESkey hardware encryption device
2532
		  0 = /dev/deskey0	First DES key
2533
		  1 = /dev/deskey1	Second DES key
2534
		    ...
2535

2536
 188 char	USB serial converters
2537
		  0 = /dev/ttyUSB0	First USB serial converter
2538
		  1 = /dev/ttyUSB1	Second USB serial converter
2539
		    ...
2540

2541
 189 char	USB serial converters - alternate devices
2542
		  0 = /dev/cuusb0	Callout device for ttyUSB0
2543
		  1 = /dev/cuusb1	Callout device for ttyUSB1
2544
		    ...
2545

2546
 190 char	Kansas City tracker/tuner card
2547
		  0 = /dev/kctt0	First KCT/T card
2548
		  1 = /dev/kctt1	Second KCT/T card
2549
		    ...
2550

2551
 191 char	Reserved for PCMCIA
2552

2553
 192 char	Kernel profiling interface
2554
		  0 = /dev/profile	Profiling control device
2555
		  1 = /dev/profile0	Profiling device for CPU 0
2556
		  2 = /dev/profile1	Profiling device for CPU 1
2557
		    ...
2558

2559
 193 char	Kernel event-tracing interface
2560
		  0 = /dev/trace	Tracing control device
2561
		  1 = /dev/trace0	Tracing device for CPU 0
2562
		  2 = /dev/trace1	Tracing device for CPU 1
2563
		    ...
2564

2565
 194 char	linVideoStreams (LINVS)
2566
		  0 = /dev/mvideo/status0	Video compression status
2567
		  1 = /dev/mvideo/stream0	Video stream
2568
		  2 = /dev/mvideo/frame0	Single compressed frame
2569
		  3 = /dev/mvideo/rawframe0	Raw uncompressed frame
2570
		  4 = /dev/mvideo/codec0	Direct codec access
2571
		  5 = /dev/mvideo/video4linux0	Video4Linux compatibility
2572

2573
		 16 = /dev/mvideo/status1	Second device
2574
		    ...
2575
		 32 = /dev/mvideo/status2	Third device
2576
		    ...
2577
		    ...
2578
		240 = /dev/mvideo/status15	16th device
2579
		    ...
2580

2581
 195 char	Nvidia graphics devices
2582
		  0 = /dev/nvidia0		First Nvidia card
2583
		  1 = /dev/nvidia1		Second Nvidia card
2584
		    ...
2585
		255 = /dev/nvidiactl		Nvidia card control device
2586

2587
 196 char	Tormenta T1 card
2588
		  0 = /dev/tor/0		Master control channel for all cards
2589
		  1 = /dev/tor/1		First DS0
2590
		  2 = /dev/tor/2		Second DS0
2591
		    ...
2592
		 48 = /dev/tor/48		48th DS0
2593
		 49 = /dev/tor/49		First pseudo-channel
2594
		 50 = /dev/tor/50		Second pseudo-channel
2595
		    ...
2596

2597
 197 char	OpenTNF tracing facility
2598
		  0 = /dev/tnf/t0		Trace 0 data extraction
2599
		  1 = /dev/tnf/t1		Trace 1 data extraction
2600
		    ...
2601
		128 = /dev/tnf/status		Tracing facility status
2602
		130 = /dev/tnf/trace		Tracing device
2603

2604
 198 char	Total Impact TPMP2 quad coprocessor PCI card
2605
		  0 = /dev/tpmp2/0		First card
2606
		  1 = /dev/tpmp2/1		Second card
2607
		    ...
2608

2609
 199 char	Veritas volume manager (VxVM) volumes
2610
		  0 = /dev/vx/rdsk/*/*		First volume
2611
		  1 = /dev/vx/rdsk/*/*		Second volume
2612
		    ...
2613

2614
 199 block	Veritas volume manager (VxVM) volumes
2615
		  0 = /dev/vx/dsk/*/*		First volume
2616
		  1 = /dev/vx/dsk/*/*		Second volume
2617
		    ...
2618

2619
		The namespace in these directories is maintained by
2620
		the user space VxVM software.
2621

2622
 200 char	Veritas VxVM configuration interface
2623
		   0 = /dev/vx/config		Configuration access node
2624
		   1 = /dev/vx/trace		Volume i/o trace access node
2625
		   2 = /dev/vx/iod		Volume i/o daemon access node
2626
		   3 = /dev/vx/info		Volume information access node
2627
		   4 = /dev/vx/task		Volume tasks access node
2628
		   5 = /dev/vx/taskmon		Volume tasks monitor daemon
2629

2630
 201 char	Veritas VxVM dynamic multipathing driver
2631
		  0 = /dev/vx/rdmp/*		First multipath device
2632
		  1 = /dev/vx/rdmp/*		Second multipath device
2633
		    ...
2634
 201 block	Veritas VxVM dynamic multipathing driver
2635
		  0 = /dev/vx/dmp/*		First multipath device
2636
		  1 = /dev/vx/dmp/*		Second multipath device
2637
		    ...
2638

2639
		The namespace in these directories is maintained by
2640
		the user space VxVM software.
2641

2642
 202 char	CPU model-specific registers
2643
		  0 = /dev/cpu/0/msr		MSRs on CPU 0
2644
		  1 = /dev/cpu/1/msr		MSRs on CPU 1
2645
		    ...
2646

2647
 202 block	Xen Virtual Block Device
2648
		  0 = /dev/xvda       First Xen VBD whole disk
2649
		  16 = /dev/xvdb      Second Xen VBD whole disk
2650
		  32 = /dev/xvdc      Third Xen VBD whole disk
2651
		    ...
2652
		  240 = /dev/xvdp     Sixteenth Xen VBD whole disk
2653

2654
		Partitions are handled in the same way as for IDE
2655
		disks (see major number 3) except that the limit on
2656
		partitions is 15.
2657

2658
 203 char	CPU CPUID information
2659
		  0 = /dev/cpu/0/cpuid		CPUID on CPU 0
2660
		  1 = /dev/cpu/1/cpuid		CPUID on CPU 1
2661
		    ...
2662

2663
 204 char	Low-density serial ports
2664
		  0 = /dev/ttyLU0		LinkUp Systems L72xx UART - port 0
2665
		  1 = /dev/ttyLU1		LinkUp Systems L72xx UART - port 1
2666
		  2 = /dev/ttyLU2		LinkUp Systems L72xx UART - port 2
2667
		  3 = /dev/ttyLU3		LinkUp Systems L72xx UART - port 3
2668
		  4 = /dev/ttyFB0		Intel Footbridge (ARM)
2669
		  5 = /dev/ttySA0		StrongARM builtin serial port 0
2670
		  6 = /dev/ttySA1		StrongARM builtin serial port 1
2671
		  7 = /dev/ttySA2		StrongARM builtin serial port 2
2672
		  8 = /dev/ttySC0		SCI serial port (SuperH) - port 0
2673
		  9 = /dev/ttySC1		SCI serial port (SuperH) - port 1
2674
		 10 = /dev/ttySC2		SCI serial port (SuperH) - port 2
2675
		 11 = /dev/ttySC3		SCI serial port (SuperH) - port 3
2676
		 12 = /dev/ttyFW0		Firmware console - port 0
2677
		 13 = /dev/ttyFW1		Firmware console - port 1
2678
		 14 = /dev/ttyFW2		Firmware console - port 2
2679
		 15 = /dev/ttyFW3		Firmware console - port 3
2680
		 16 = /dev/ttyAM0		ARM "AMBA" serial port 0
2681
		    ...
2682
		 31 = /dev/ttyAM15		ARM "AMBA" serial port 15
2683
		 32 = /dev/ttyDB0		DataBooster serial port 0
2684
		    ...
2685
		 39 = /dev/ttyDB7		DataBooster serial port 7
2686
		 40 = /dev/ttySG0		SGI Altix console port
2687
		 41 = /dev/ttySMX0		Motorola i.MX - port 0
2688
		 42 = /dev/ttySMX1		Motorola i.MX - port 1
2689
		 43 = /dev/ttySMX2		Motorola i.MX - port 2
2690
		 44 = /dev/ttyMM0		Marvell MPSC - port 0 (obsolete unused)
2691
		 45 = /dev/ttyMM1		Marvell MPSC - port 1 (obsolete unused)
2692
		 46 = /dev/ttyCPM0		PPC CPM (SCC or SMC) - port 0
2693
		    ...
2694
		 51 = /dev/ttyCPM5		PPC CPM (SCC or SMC) - port 5
2695
		 82 = /dev/ttyVR0		NEC VR4100 series SIU
2696
		 83 = /dev/ttyVR1		NEC VR4100 series DSIU
2697
		 148 = /dev/ttyPSC0		PPC PSC - port 0
2698
		    ...
2699
		 153 = /dev/ttyPSC5		PPC PSC - port 5
2700
		 154 = /dev/ttyAT0		ATMEL serial port 0
2701
		    ...
2702
		 169 = /dev/ttyAT15		ATMEL serial port 15
2703
		 170 = /dev/ttyNX0		Hilscher netX serial port 0
2704
		    ...
2705
		 185 = /dev/ttyNX15		Hilscher netX serial port 15
2706
		 186 = /dev/ttyJ0		JTAG1 DCC protocol based serial port emulation
2707

2708
		 If maximum number of uartlite serial ports is more than 4, then the driver
2709
		 uses dynamic allocation instead of static allocation for major number.
2710
		 187 = /dev/ttyUL0		Xilinx uartlite - port 0
2711
		    ...
2712
		 190 = /dev/ttyUL3		Xilinx uartlite - port 3
2713
		 191 = /dev/xvc0		Xen virtual console - port 0
2714
		 192 = /dev/ttyPZ0		pmac_zilog - port 0
2715
		    ...
2716
		 195 = /dev/ttyPZ3		pmac_zilog - port 3
2717
		 196 = /dev/ttyTX0		TX39/49 serial port 0
2718
		    ...
2719
		 204 = /dev/ttyTX7		TX39/49 serial port 7
2720
		 205 = /dev/ttySC0		SC26xx serial port 0
2721
		 206 = /dev/ttySC1		SC26xx serial port 1
2722
		 207 = /dev/ttySC2		SC26xx serial port 2
2723
		 208 = /dev/ttySC3		SC26xx serial port 3
2724
		 209 = /dev/ttyMAX0		MAX3100 serial port 0
2725
		 210 = /dev/ttyMAX1		MAX3100 serial port 1
2726
		 211 = /dev/ttyMAX2		MAX3100 serial port 2
2727
		 212 = /dev/ttyMAX3		MAX3100 serial port 3
2728

2729
 205 char	Low-density serial ports (alternate device)
2730
		  0 = /dev/culu0		Callout device for ttyLU0
2731
		  1 = /dev/culu1		Callout device for ttyLU1
2732
		  2 = /dev/culu2		Callout device for ttyLU2
2733
		  3 = /dev/culu3		Callout device for ttyLU3
2734
		  4 = /dev/cufb0		Callout device for ttyFB0
2735
		  5 = /dev/cusa0		Callout device for ttySA0
2736
		  6 = /dev/cusa1		Callout device for ttySA1
2737
		  7 = /dev/cusa2		Callout device for ttySA2
2738
		  8 = /dev/cusc0		Callout device for ttySC0
2739
		  9 = /dev/cusc1		Callout device for ttySC1
2740
		 10 = /dev/cusc2		Callout device for ttySC2
2741
		 11 = /dev/cusc3		Callout device for ttySC3
2742
		 12 = /dev/cufw0		Callout device for ttyFW0
2743
		 13 = /dev/cufw1		Callout device for ttyFW1
2744
		 14 = /dev/cufw2		Callout device for ttyFW2
2745
		 15 = /dev/cufw3		Callout device for ttyFW3
2746
		 16 = /dev/cuam0		Callout device for ttyAM0
2747
		    ...
2748
		 31 = /dev/cuam15		Callout device for ttyAM15
2749
		 32 = /dev/cudb0		Callout device for ttyDB0
2750
		    ...
2751
		 39 = /dev/cudb7		Callout device for ttyDB7
2752
		 40 = /dev/cusg0		Callout device for ttySG0
2753
		 41 = /dev/ttycusmx0		Callout device for ttySMX0
2754
		 42 = /dev/ttycusmx1		Callout device for ttySMX1
2755
		 43 = /dev/ttycusmx2		Callout device for ttySMX2
2756
		 46 = /dev/cucpm0		Callout device for ttyCPM0
2757
		    ...
2758
		 51 = /dev/cucpm5		Callout device for ttyCPM5
2759
		 82 = /dev/cuvr0		Callout device for ttyVR0
2760
		 83 = /dev/cuvr1		Callout device for ttyVR1
2761

2762
 206 char	OnStream SC-x0 tape devices
2763
		  0 = /dev/osst0		First OnStream SCSI tape, mode 0
2764
		  1 = /dev/osst1		Second OnStream SCSI tape, mode 0
2765
		    ...
2766
		 32 = /dev/osst0l		First OnStream SCSI tape, mode 1
2767
		 33 = /dev/osst1l		Second OnStream SCSI tape, mode 1
2768
		    ...
2769
		 64 = /dev/osst0m		First OnStream SCSI tape, mode 2
2770
		 65 = /dev/osst1m		Second OnStream SCSI tape, mode 2
2771
		    ...
2772
		 96 = /dev/osst0a		First OnStream SCSI tape, mode 3
2773
		 97 = /dev/osst1a		Second OnStream SCSI tape, mode 3
2774
		    ...
2775
		128 = /dev/nosst0		No rewind version of /dev/osst0
2776
		129 = /dev/nosst1		No rewind version of /dev/osst1
2777
		    ...
2778
		160 = /dev/nosst0l		No rewind version of /dev/osst0l
2779
		161 = /dev/nosst1l		No rewind version of /dev/osst1l
2780
		    ...
2781
		192 = /dev/nosst0m		No rewind version of /dev/osst0m
2782
		193 = /dev/nosst1m		No rewind version of /dev/osst1m
2783
		    ...
2784
		224 = /dev/nosst0a		No rewind version of /dev/osst0a
2785
		225 = /dev/nosst1a		No rewind version of /dev/osst1a
2786
		    ...
2787

2788
		The OnStream SC-x0 SCSI tapes do not support the
2789
		standard SCSI SASD command set and therefore need
2790
		their own driver "osst". Note that the IDE, USB (and
2791
		maybe ParPort) versions may be driven via ide-scsi or
2792
		usb-storage SCSI emulation and this osst device and
2793
		driver as well.  The ADR-x0 drives are QIC-157
2794
		compliant and don't need osst.
2795

2796
 207 char	Compaq ProLiant health feature indicate
2797
		  0 = /dev/cpqhealth/cpqw	Redirector interface
2798
		  1 = /dev/cpqhealth/crom	EISA CROM
2799
		  2 = /dev/cpqhealth/cdt	Data Table
2800
		  3 = /dev/cpqhealth/cevt	Event Log
2801
		  4 = /dev/cpqhealth/casr	Automatic Server Recovery
2802
		  5 = /dev/cpqhealth/cecc	ECC Memory
2803
		  6 = /dev/cpqhealth/cmca	Machine Check Architecture
2804
		  7 = /dev/cpqhealth/ccsm	Deprecated CDT
2805
		  8 = /dev/cpqhealth/cnmi	NMI Handling
2806
		  9 = /dev/cpqhealth/css	Sideshow Management
2807
		 10 = /dev/cpqhealth/cram	CMOS interface
2808
		 11 = /dev/cpqhealth/cpci	PCI IRQ interface
2809

2810
 208 char	User space serial ports
2811
		  0 = /dev/ttyU0		First user space serial port
2812
		  1 = /dev/ttyU1		Second user space serial port
2813
		    ...
2814

2815
 209 char	User space serial ports (alternate devices)
2816
		  0 = /dev/cuu0			Callout device for ttyU0
2817
		  1 = /dev/cuu1			Callout device for ttyU1
2818
		    ...
2819

2820
 210 char	SBE, Inc. sync/async serial card
2821
		  0 = /dev/sbei/wxcfg0		Configuration device for board 0
2822
		  1 = /dev/sbei/dld0		Download device for board 0
2823
		  2 = /dev/sbei/wan00		WAN device, port 0, board 0
2824
		  3 = /dev/sbei/wan01		WAN device, port 1, board 0
2825
		  4 = /dev/sbei/wan02		WAN device, port 2, board 0
2826
		  5 = /dev/sbei/wan03		WAN device, port 3, board 0
2827
		  6 = /dev/sbei/wanc00		WAN clone device, port 0, board 0
2828
		  7 = /dev/sbei/wanc01		WAN clone device, port 1, board 0
2829
		  8 = /dev/sbei/wanc02		WAN clone device, port 2, board 0
2830
		  9 = /dev/sbei/wanc03		WAN clone device, port 3, board 0
2831
		 10 = /dev/sbei/wxcfg1		Configuration device for board 1
2832
		 11 = /dev/sbei/dld1		Download device for board 1
2833
		 12 = /dev/sbei/wan10		WAN device, port 0, board 1
2834
		 13 = /dev/sbei/wan11		WAN device, port 1, board 1
2835
		 14 = /dev/sbei/wan12		WAN device, port 2, board 1
2836
		 15 = /dev/sbei/wan13		WAN device, port 3, board 1
2837
		 16 = /dev/sbei/wanc10		WAN clone device, port 0, board 1
2838
		 17 = /dev/sbei/wanc11		WAN clone device, port 1, board 1
2839
		 18 = /dev/sbei/wanc12		WAN clone device, port 2, board 1
2840
		 19 = /dev/sbei/wanc13		WAN clone device, port 3, board 1
2841
		    ...
2842

2843
		Yes, each board is really spaced 10 (decimal) apart.
2844

2845
 211 char	Addinum CPCI1500 digital I/O card
2846
		  0 = /dev/addinum/cpci1500/0	First CPCI1500 card
2847
		  1 = /dev/addinum/cpci1500/1	Second CPCI1500 card
2848
		    ...
2849

2850
 212 char	LinuxTV.org DVB driver subsystem
2851
		  0 = /dev/dvb/adapter0/video0    first video decoder of first card
2852
		  1 = /dev/dvb/adapter0/audio0    first audio decoder of first card
2853
		  2 = /dev/dvb/adapter0/sec0      (obsolete/unused)
2854
		  3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2855
		  4 = /dev/dvb/adapter0/demux0    first demux device of first card
2856
		  5 = /dev/dvb/adapter0/dvr0      first digital video recoder device of first card
2857
		  6 = /dev/dvb/adapter0/ca0       first common access port of first card
2858
		  7 = /dev/dvb/adapter0/net0      first network device of first card
2859
		  8 = /dev/dvb/adapter0/osd0      first on-screen-display device of first card
2860
		  9 = /dev/dvb/adapter0/video1    second video decoder of first card
2861
		    ...
2862
		 64 = /dev/dvb/adapter1/video0    first video decoder of second card
2863
		    ...
2864
		128 = /dev/dvb/adapter2/video0    first video decoder of third card
2865
		    ...
2866
		196 = /dev/dvb/adapter3/video0    first video decoder of fourth card
2867

2868
 216 char	Bluetooth RFCOMM TTY devices
2869
		  0 = /dev/rfcomm0		First Bluetooth RFCOMM TTY device
2870
		  1 = /dev/rfcomm1		Second Bluetooth RFCOMM TTY device
2871
		    ...
2872

2873
 217 char	Bluetooth RFCOMM TTY devices (alternate devices)
2874
		  0 = /dev/curf0		Callout device for rfcomm0
2875
		  1 = /dev/curf1		Callout device for rfcomm1
2876
		    ...
2877

2878
 218 char	The Logical Company bus Unibus/Qbus adapters
2879
		  0 = /dev/logicalco/bci/0	First bus adapter
2880
		  1 = /dev/logicalco/bci/1	First bus adapter
2881
		    ...
2882

2883
 219 char	The Logical Company DCI-1300 digital I/O card
2884
		  0 = /dev/logicalco/dci1300/0	First DCI-1300 card
2885
		  1 = /dev/logicalco/dci1300/1	Second DCI-1300 card
2886
		    ...
2887

2888
 220 char	Myricom Myrinet "GM" board
2889
		  0 = /dev/myricom/gm0		First Myrinet GM board
2890
		  1 = /dev/myricom/gmp0		First board "root access"
2891
		  2 = /dev/myricom/gm1		Second Myrinet GM board
2892
		  3 = /dev/myricom/gmp1		Second board "root access"
2893
		    ...
2894

2895
 221 char	VME bus
2896
		  0 = /dev/bus/vme/m0		First master image
2897
		  1 = /dev/bus/vme/m1		Second master image
2898
		  2 = /dev/bus/vme/m2		Third master image
2899
		  3 = /dev/bus/vme/m3		Fourth master image
2900
		  4 = /dev/bus/vme/s0		First slave image
2901
		  5 = /dev/bus/vme/s1		Second slave image
2902
		  6 = /dev/bus/vme/s2		Third slave image
2903
		  7 = /dev/bus/vme/s3		Fourth slave image
2904
		  8 = /dev/bus/vme/ctl		Control
2905

2906
		It is expected that all VME bus drivers will use the
2907
		same interface.  For interface documentation see
2908
		http://www.vmelinux.org/.
2909

2910
 224 char	A2232 serial card
2911
		  0 = /dev/ttyY0		First A2232 port
2912
		  1 = /dev/ttyY1		Second A2232 port
2913
		    ...
2914

2915
 225 char	A2232 serial card (alternate devices)
2916
		  0 = /dev/cuy0			Callout device for ttyY0
2917
		  1 = /dev/cuy1			Callout device for ttyY1
2918
		    ...
2919

2920
 226 char	Direct Rendering Infrastructure (DRI)
2921
		  0 = /dev/dri/card0		First graphics card
2922
		  1 = /dev/dri/card1		Second graphics card
2923
		    ...
2924

2925
 227 char	IBM 3270 terminal Unix tty access
2926
		  1 = /dev/3270/tty1		First 3270 terminal
2927
		  2 = /dev/3270/tty2		Seconds 3270 terminal
2928
		    ...
2929

2930
 228 char	IBM 3270 terminal block-mode access
2931
		  0 = /dev/3270/tub		Controlling interface
2932
		  1 = /dev/3270/tub1		First 3270 terminal
2933
		  2 = /dev/3270/tub2		Second 3270 terminal
2934
		    ...
2935

2936
 229 char	IBM iSeries/pSeries virtual console
2937
		  0 = /dev/hvc0			First console port
2938
		  1 = /dev/hvc1			Second console port
2939
		    ...
2940

2941
 230 char	IBM iSeries virtual tape
2942
		  0 = /dev/iseries/vt0		First virtual tape, mode 0
2943
		  1 = /dev/iseries/vt1		Second virtual tape, mode 0
2944
		    ...
2945
		 32 = /dev/iseries/vt0l		First virtual tape, mode 1
2946
		 33 = /dev/iseries/vt1l		Second virtual tape, mode 1
2947
		    ...
2948
		 64 = /dev/iseries/vt0m		First virtual tape, mode 2
2949
		 65 = /dev/iseries/vt1m		Second virtual tape, mode 2
2950
		    ...
2951
		 96 = /dev/iseries/vt0a		First virtual tape, mode 3
2952
		 97 = /dev/iseries/vt1a		Second virtual tape, mode 3
2953
		      ...
2954
		128 = /dev/iseries/nvt0		First virtual tape, mode 0, no rewind
2955
		129 = /dev/iseries/nvt1		Second virtual tape, mode 0, no rewind
2956
		    ...
2957
		160 = /dev/iseries/nvt0l	First virtual tape, mode 1, no rewind
2958
		161 = /dev/iseries/nvt1l	Second virtual tape, mode 1, no rewind
2959
		    ...
2960
		192 = /dev/iseries/nvt0m	First virtual tape, mode 2, no rewind
2961
		193 = /dev/iseries/nvt1m	Second virtual tape, mode 2, no rewind
2962
		    ...
2963
		224 = /dev/iseries/nvt0a	First virtual tape, mode 3, no rewind
2964
		225 = /dev/iseries/nvt1a	Second virtual tape, mode 3, no rewind
2965
		    ...
2966

2967
		"No rewind" refers to the omission of the default
2968
		automatic rewind on device close.  The MTREW or MTOFFL
2969
		ioctl()'s can be used to rewind the tape regardless of
2970
		the device used to access it.
2971

2972
 231 char	InfiniBand
2973
		0 = /dev/infiniband/umad0
2974
		1 = /dev/infiniband/umad1
2975
		  ...
2976
		63 = /dev/infiniband/umad63    63rd InfiniBandMad device
2977
		64 = /dev/infiniband/issm0     First InfiniBand IsSM device
2978
		65 = /dev/infiniband/issm1     Second InfiniBand IsSM device
2979
		  ...
2980
		127 = /dev/infiniband/issm63    63rd InfiniBand IsSM device
2981
		192 = /dev/infiniband/uverbs0   First InfiniBand verbs device
2982
		193 = /dev/infiniband/uverbs1   Second InfiniBand verbs device
2983
		  ...
2984
		223 = /dev/infiniband/uverbs31  31st InfiniBand verbs device
2985

2986
 232 char	Biometric Devices
2987
		0 = /dev/biometric/sensor0/fingerprint	first fingerprint sensor on first device
2988
		1 = /dev/biometric/sensor0/iris		first iris sensor on first device
2989
		2 = /dev/biometric/sensor0/retina	first retina sensor on first device
2990
		3 = /dev/biometric/sensor0/voiceprint	first voiceprint sensor on first device
2991
		4 = /dev/biometric/sensor0/facial	first facial sensor on first device
2992
		5 = /dev/biometric/sensor0/hand		first hand sensor on first device
2993
		  ...
2994
		10 = /dev/biometric/sensor1/fingerprint	first fingerprint sensor on second device
2995
		  ...
2996
		20 = /dev/biometric/sensor2/fingerprint	first fingerprint sensor on third device
2997
		  ...
2998

2999
 233 char	PathScale InfiniPath interconnect
3000
		0 = /dev/ipath        Primary device for programs (any unit)
3001
		1 = /dev/ipath0       Access specifically to unit 0
3002
		2 = /dev/ipath1       Access specifically to unit 1
3003
		  ...
3004
		4 = /dev/ipath3       Access specifically to unit 3
3005
		129 = /dev/ipath_sma    Device used by Subnet Management Agent
3006
		130 = /dev/ipath_diag   Device used by diagnostics programs
3007

3008
 234-254	char	RESERVED FOR DYNAMIC ASSIGNMENT
3009
		Character devices that request a dynamic allocation of major number will
3010
		take numbers starting from 254 and downward.
3011

3012
 240-254 block	LOCAL/EXPERIMENTAL USE
3013
		Allocated for local/experimental use.  For devices not
3014
		assigned official numbers, these ranges should be
3015
		used in order to avoid conflicting with future assignments.
3016

3017
 255 char	RESERVED
3018

3019
 255 block	RESERVED
3020

3021
		This major is reserved to assist the expansion to a
3022
		larger number space.  No device nodes with this major
3023
		should ever be created on the filesystem.
3024
		(This is probably not true anymore, but I'll leave it
3025
		for now /Torben)
3026

3027
 ---LARGE MAJORS!!!!!---
3028

3029
 256 char	Equinox SST multi-port serial boards
3030
		   0 = /dev/ttyEQ0	First serial port on first Equinox SST board
3031
		 127 = /dev/ttyEQ127	Last serial port on first Equinox SST board
3032
		 128 = /dev/ttyEQ128	First serial port on second Equinox SST board
3033
		  ...
3034
		1027 = /dev/ttyEQ1027	Last serial port on eighth Equinox SST board
3035

3036
 256 block	Resident Flash Disk Flash Translation Layer
3037
		  0 = /dev/rfda		First RFD FTL layer
3038
		 16 = /dev/rfdb		Second RFD FTL layer
3039
		  ...
3040
		240 = /dev/rfdp		16th RFD FTL layer
3041

3042
 257 char	Phoenix Technologies Cryptographic Services Driver
3043
		  0 = /dev/ptlsec	Crypto Services Driver
3044

3045
 257 block	SSFDC Flash Translation Layer filesystem
3046
		  0 = /dev/ssfdca	First SSFDC layer
3047
		  8 = /dev/ssfdcb	Second SSFDC layer
3048
		 16 = /dev/ssfdcc	Third SSFDC layer
3049
		 24 = /dev/ssfdcd	4th SSFDC layer
3050
		 32 = /dev/ssfdce	5th SSFDC layer
3051
		 40 = /dev/ssfdcf	6th SSFDC layer
3052
		 48 = /dev/ssfdcg	7th SSFDC layer
3053
		 56 = /dev/ssfdch	8th SSFDC layer
3054

3055
 258 block	ROM/Flash read-only translation layer
3056
		  0 = /dev/blockrom0	First ROM card's translation layer interface
3057
		  1 = /dev/blockrom1	Second ROM card's translation layer interface
3058
		  ...
3059

3060
 259 block	Block Extended Major
3061
		  Used dynamically to hold additional partition minor
3062
		  numbers and allow large numbers of partitions per device
3063

3064
 259 char	FPGA configuration interfaces
3065
		  0 = /dev/icap0	First Xilinx internal configuration
3066
		  1 = /dev/icap1	Second Xilinx internal configuration
3067

3068
 260 char	OSD (Object-based-device) SCSI Device
3069
		  0 = /dev/osd0		First OSD Device
3070
		  1 = /dev/osd1		Second OSD Device
3071
		  ...
3072
		  255 = /dev/osd255	256th OSD Device
3073

3074
 261 char	Compute Acceleration Devices
3075
		  0 = /dev/accel/accel0	First acceleration device
3076
		  1 = /dev/accel/accel1	Second acceleration device
3077
		    ...
3078

3079
 384-511 char	RESERVED FOR DYNAMIC ASSIGNMENT
3080
		Character devices that request a dynamic allocation of major
3081
		number will take numbers starting from 511 and downward,
3082
		once the 234-254 range is full.
3083

3084