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-rw-r--r--Documentation/devices.txt133
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diff --git a/Documentation/devices.txt b/Documentation/devices.txt
index 2be08240ee80..53d64d382343 100644
--- a/Documentation/devices.txt
+++ b/Documentation/devices.txt
@@ -1,9 +1,9 @@
1 1
2 LINUX ALLOCATED DEVICES (2.6+ version) 2 LINUX ALLOCATED DEVICES (2.6+ version)
3 3
4 Maintained by Torben Mathiasen <device@lanana.org> 4 Maintained by Alan Cox <device@lanana.org>
5 5
6 Last revised: 29 November 2006 6 Last revised: 6th April 2009
7 7
8This list is the Linux Device List, the official registry of allocated 8This list is the Linux Device List, the official registry of allocated
9device numbers and /dev directory nodes for the Linux operating 9device numbers and /dev directory nodes for the Linux operating
@@ -67,6 +67,11 @@ up to date. Due to the number of registrations I have to maintain it
67in "batch mode", so there is likely additional registrations that 67in "batch mode", so there is likely additional registrations that
68haven't been listed yet. 68haven't been listed yet.
69 69
70Fourth, remember that Linux now has extensive support for dynamic allocation
71of device numbering and can use sysfs and udev to handle the naming needs.
72There are still some exceptions in the serial and boot device area. Before
73asking for a device number make sure you actually need one.
74
70Finally, sometimes I have to play "namespace police." Please don't be 75Finally, sometimes I have to play "namespace police." Please don't be
71offended. I often get submissions for /dev names that would be bound 76offended. I often get submissions for /dev names that would be bound
72to cause conflicts down the road. I am trying to avoid getting in a 77to cause conflicts down the road. I am trying to avoid getting in a
@@ -101,7 +106,7 @@ Your cooperation is appreciated.
101 0 = /dev/ram0 First RAM disk 106 0 = /dev/ram0 First RAM disk
102 1 = /dev/ram1 Second RAM disk 107 1 = /dev/ram1 Second RAM disk
103 ... 108 ...
104 250 = /dev/initrd Initial RAM disk {2.6} 109 250 = /dev/initrd Initial RAM disk
105 110
106 Older kernels had /dev/ramdisk (1, 1) here. 111 Older kernels had /dev/ramdisk (1, 1) here.
107 /dev/initrd refers to a RAM disk which was preloaded 112 /dev/initrd refers to a RAM disk which was preloaded
@@ -340,7 +345,7 @@ Your cooperation is appreciated.
340 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen 345 14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
341 15 = /dev/touchscreen/mk712 MK712 touchscreen 346 15 = /dev/touchscreen/mk712 MK712 touchscreen
342 128 = /dev/beep Fancy beep device 347 128 = /dev/beep Fancy beep device
343 129 = /dev/modreq Kernel module load request {2.6} 348 129 =
344 130 = /dev/watchdog Watchdog timer port 349 130 = /dev/watchdog Watchdog timer port
345 131 = /dev/temperature Machine internal temperature 350 131 = /dev/temperature Machine internal temperature
346 132 = /dev/hwtrap Hardware fault trap 351 132 = /dev/hwtrap Hardware fault trap
@@ -350,10 +355,10 @@ Your cooperation is appreciated.
350 139 = /dev/openprom SPARC OpenBoot PROM 355 139 = /dev/openprom SPARC OpenBoot PROM
351 140 = /dev/relay8 Berkshire Products Octal relay card 356 140 = /dev/relay8 Berkshire Products Octal relay card
352 141 = /dev/relay16 Berkshire Products ISO-16 relay card 357 141 = /dev/relay16 Berkshire Products ISO-16 relay card
353 142 = /dev/msr x86 model-specific registers {2.6} 358 142 =
354 143 = /dev/pciconf PCI configuration space 359 143 = /dev/pciconf PCI configuration space
355 144 = /dev/nvram Non-volatile configuration RAM 360 144 = /dev/nvram Non-volatile configuration RAM
356 145 = /dev/hfmodem Soundcard shortwave modem control {2.6} 361 145 = /dev/hfmodem Soundcard shortwave modem control
357 146 = /dev/graphics Linux/SGI graphics device 362 146 = /dev/graphics Linux/SGI graphics device
358 147 = /dev/opengl Linux/SGI OpenGL pipe 363 147 = /dev/opengl Linux/SGI OpenGL pipe
359 148 = /dev/gfx Linux/SGI graphics effects device 364 148 = /dev/gfx Linux/SGI graphics effects device
@@ -435,6 +440,9 @@ Your cooperation is appreciated.
435 228 = /dev/hpet HPET driver 440 228 = /dev/hpet HPET driver
436 229 = /dev/fuse Fuse (virtual filesystem in user-space) 441 229 = /dev/fuse Fuse (virtual filesystem in user-space)
437 230 = /dev/midishare MidiShare driver 442 230 = /dev/midishare MidiShare driver
443 231 = /dev/snapshot System memory snapshot device
444 232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
445 233 = /dev/kmview View-OS A process with a view
438 240-254 Reserved for local use 446 240-254 Reserved for local use
439 255 Reserved for MISC_DYNAMIC_MINOR 447 255 Reserved for MISC_DYNAMIC_MINOR
440 448
@@ -466,10 +474,7 @@ Your cooperation is appreciated.
466 The device names specified are proposed -- if there 474 The device names specified are proposed -- if there
467 are "standard" names for these devices, please let me know. 475 are "standard" names for these devices, please let me know.
468 476
469 12 block MSCDEX CD-ROM callback support {2.6} 477 12 block
470 0 = /dev/dos_cd0 First MSCDEX CD-ROM
471 1 = /dev/dos_cd1 Second MSCDEX CD-ROM
472 ...
473 478
474 13 char Input core 479 13 char Input core
475 0 = /dev/input/js0 First joystick 480 0 = /dev/input/js0 First joystick
@@ -498,7 +503,7 @@ Your cooperation is appreciated.
498 2 = /dev/midi00 First MIDI port 503 2 = /dev/midi00 First MIDI port
499 3 = /dev/dsp Digital audio 504 3 = /dev/dsp Digital audio
500 4 = /dev/audio Sun-compatible digital audio 505 4 = /dev/audio Sun-compatible digital audio
501 6 = /dev/sndstat Sound card status information {2.6} 506 6 =
502 7 = /dev/audioctl SPARC audio control device 507 7 = /dev/audioctl SPARC audio control device
503 8 = /dev/sequencer2 Sequencer -- alternate device 508 8 = /dev/sequencer2 Sequencer -- alternate device
504 16 = /dev/mixer1 Second soundcard mixer control 509 16 = /dev/mixer1 Second soundcard mixer control
@@ -510,14 +515,7 @@ Your cooperation is appreciated.
510 34 = /dev/midi02 Third MIDI port 515 34 = /dev/midi02 Third MIDI port
511 50 = /dev/midi03 Fourth MIDI port 516 50 = /dev/midi03 Fourth MIDI port
512 517
513 14 block BIOS harddrive callback support {2.6} 518 14 block
514 0 = /dev/dos_hda First BIOS harddrive whole disk
515 64 = /dev/dos_hdb Second BIOS harddrive whole disk
516 128 = /dev/dos_hdc Third BIOS harddrive whole disk
517 192 = /dev/dos_hdd Fourth BIOS harddrive whole disk
518
519 Partitions are handled in the same way as IDE disks
520 (see major number 3).
521 519
522 15 char Joystick 520 15 char Joystick
523 0 = /dev/js0 First analog joystick 521 0 = /dev/js0 First analog joystick
@@ -535,14 +533,14 @@ Your cooperation is appreciated.
535 16 block GoldStar CD-ROM 533 16 block GoldStar CD-ROM
536 0 = /dev/gscd GoldStar CD-ROM 534 0 = /dev/gscd GoldStar CD-ROM
537 535
538 17 char Chase serial card 536 17 char OBSOLETE (was Chase serial card)
539 0 = /dev/ttyH0 First Chase port 537 0 = /dev/ttyH0 First Chase port
540 1 = /dev/ttyH1 Second Chase port 538 1 = /dev/ttyH1 Second Chase port
541 ... 539 ...
542 17 block Optics Storage CD-ROM 540 17 block Optics Storage CD-ROM
543 0 = /dev/optcd Optics Storage CD-ROM 541 0 = /dev/optcd Optics Storage CD-ROM
544 542
545 18 char Chase serial card - alternate devices 543 18 char OBSOLETE (was Chase serial card - alternate devices)
546 0 = /dev/cuh0 Callout device for ttyH0 544 0 = /dev/cuh0 Callout device for ttyH0
547 1 = /dev/cuh1 Callout device for ttyH1 545 1 = /dev/cuh1 Callout device for ttyH1
548 ... 546 ...
@@ -644,8 +642,7 @@ Your cooperation is appreciated.
644 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2 642 2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
645 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3 643 3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
646 644
647 26 char Quanta WinVision frame grabber {2.6} 645 26 char
648 0 = /dev/wvisfgrab Quanta WinVision frame grabber
649 646
650 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM 647 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
651 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0 648 0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
@@ -872,7 +869,7 @@ Your cooperation is appreciated.
872 and "user level packet I/O." This board is also 869 and "user level packet I/O." This board is also
873 accessible as a standard networking "eth" device. 870 accessible as a standard networking "eth" device.
874 871
875 38 block Reserved for Linux/AP+ 872 38 block OBSOLETE (was Linux/AP+)
876 873
877 39 char ML-16P experimental I/O board 874 39 char ML-16P experimental I/O board
878 0 = /dev/ml16pa-a0 First card, first analog channel 875 0 = /dev/ml16pa-a0 First card, first analog channel
@@ -892,29 +889,16 @@ Your cooperation is appreciated.
892 50 = /dev/ml16pb-c1 Second card, second counter/timer 889 50 = /dev/ml16pb-c1 Second card, second counter/timer
893 51 = /dev/ml16pb-c2 Second card, third counter/timer 890 51 = /dev/ml16pb-c2 Second card, third counter/timer
894 ... 891 ...
895 39 block Reserved for Linux/AP+ 892 39 block
896 893
897 40 char Matrox Meteor frame grabber {2.6} 894 40 char
898 0 = /dev/mmetfgrab Matrox Meteor frame grabber
899 895
900 40 block Syquest EZ135 parallel port removable drive 896 40 block
901 0 = /dev/eza Parallel EZ135 drive, whole disk
902
903 This device is obsolete and will be removed in a
904 future version of Linux. It has been replaced with
905 the parallel port IDE disk driver at major number 45.
906 Partitions are handled in the same way as IDE disks
907 (see major number 3).
908 897
909 41 char Yet Another Micro Monitor 898 41 char Yet Another Micro Monitor
910 0 = /dev/yamm Yet Another Micro Monitor 899 0 = /dev/yamm Yet Another Micro Monitor
911 900
912 41 block MicroSolutions BackPack parallel port CD-ROM 901 41 block
913 0 = /dev/bpcd BackPack CD-ROM
914
915 This device is obsolete and will be removed in a
916 future version of Linux. It has been replaced with
917 the parallel port ATAPI CD-ROM driver at major number 46.
918 902
919 42 char Demo/sample use 903 42 char Demo/sample use
920 904
@@ -1681,13 +1665,7 @@ Your cooperation is appreciated.
1681 disks (see major number 3) except that the limit on 1665 disks (see major number 3) except that the limit on
1682 partitions is 15. 1666 partitions is 15.
1683 1667
1684 93 char IBM Smart Capture Card frame grabber {2.6} 1668 93 char
1685 0 = /dev/iscc0 First Smart Capture Card
1686 1 = /dev/iscc1 Second Smart Capture Card
1687 ...
1688 128 = /dev/isccctl0 First Smart Capture Card control
1689 129 = /dev/isccctl1 Second Smart Capture Card control
1690 ...
1691 1669
1692 93 block NAND Flash Translation Layer filesystem 1670 93 block NAND Flash Translation Layer filesystem
1693 0 = /dev/nftla First NFTL layer 1671 0 = /dev/nftla First NFTL layer
@@ -1695,10 +1673,7 @@ Your cooperation is appreciated.
1695 ... 1673 ...
1696 240 = /dev/nftlp 16th NTFL layer 1674 240 = /dev/nftlp 16th NTFL layer
1697 1675
1698 94 char miroVIDEO DC10/30 capture/playback device {2.6} 1676 94 char
1699 0 = /dev/dcxx0 First capture card
1700 1 = /dev/dcxx1 Second capture card
1701 ...
1702 1677
1703 94 block IBM S/390 DASD block storage 1678 94 block IBM S/390 DASD block storage
1704 0 = /dev/dasda First DASD device, major 1679 0 = /dev/dasda First DASD device, major
@@ -1791,11 +1766,7 @@ Your cooperation is appreciated.
1791 ... 1766 ...
1792 15 = /dev/amiraid/ar?p15 15th partition 1767 15 = /dev/amiraid/ar?p15 15th partition
1793 1768
1794102 char Philips SAA5249 Teletext signal decoder {2.6} 1769102 char
1795 0 = /dev/tlk0 First Teletext decoder
1796 1 = /dev/tlk1 Second Teletext decoder
1797 2 = /dev/tlk2 Third Teletext decoder
1798 3 = /dev/tlk3 Fourth Teletext decoder
1799 1770
1800102 block Compressed block device 1771102 block Compressed block device
1801 0 = /dev/cbd/a First compressed block device, whole device 1772 0 = /dev/cbd/a First compressed block device, whole device
@@ -1916,10 +1887,7 @@ Your cooperation is appreciated.
1916 DAC960 (see major number 48) except that the limit on 1887 DAC960 (see major number 48) except that the limit on
1917 partitions is 15. 1888 partitions is 15.
1918 1889
1919111 char Philips SAA7146-based audio/video card {2.6} 1890111 char
1920 0 = /dev/av0 First A/V card
1921 1 = /dev/av1 Second A/V card
1922 ...
1923 1891
1924111 block Compaq Next Generation Drive Array, eighth controller 1892111 block Compaq Next Generation Drive Array, eighth controller
1925 0 = /dev/cciss/c7d0 First logical drive, whole disk 1893 0 = /dev/cciss/c7d0 First logical drive, whole disk
@@ -2079,8 +2047,8 @@ Your cooperation is appreciated.
2079 ... 2047 ...
2080 2048
2081119 char VMware virtual network control 2049119 char VMware virtual network control
2082 0 = /dev/vmnet0 1st virtual network 2050 0 = /dev/vnet0 1st virtual network
2083 1 = /dev/vmnet1 2nd virtual network 2051 1 = /dev/vnet1 2nd virtual network
2084 ... 2052 ...
2085 2053
2086120-127 char LOCAL/EXPERIMENTAL USE 2054120-127 char LOCAL/EXPERIMENTAL USE
@@ -2450,7 +2418,7 @@ Your cooperation is appreciated.
2450 2 = /dev/raw/raw2 Second raw I/O device 2418 2 = /dev/raw/raw2 Second raw I/O device
2451 ... 2419 ...
2452 2420
2453163 char UNASSIGNED (was Radio Tech BIM-XXX-RS232 radio modem - see 51) 2421163 char
2454 2422
2455164 char Chase Research AT/PCI-Fast serial card 2423164 char Chase Research AT/PCI-Fast serial card
2456 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0 2424 0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
@@ -2542,6 +2510,12 @@ Your cooperation is appreciated.
2542 1 = /dev/clanvi1 Second cLAN adapter 2510 1 = /dev/clanvi1 Second cLAN adapter
2543 ... 2511 ...
2544 2512
2513179 block MMC block devices
2514 0 = /dev/mmcblk0 First SD/MMC card
2515 1 = /dev/mmcblk0p1 First partition on first MMC card
2516 8 = /dev/mmcblk1 Second SD/MMC card
2517 ...
2518
2545179 char CCube DVXChip-based PCI products 2519179 char CCube DVXChip-based PCI products
2546 0 = /dev/dvxirq0 First DVX device 2520 0 = /dev/dvxirq0 First DVX device
2547 1 = /dev/dvxirq1 Second DVX device 2521 1 = /dev/dvxirq1 Second DVX device
@@ -2560,6 +2534,9 @@ Your cooperation is appreciated.
2560 96 = /dev/usb/hiddev0 1st USB HID device 2534 96 = /dev/usb/hiddev0 1st USB HID device
2561 ... 2535 ...
2562 111 = /dev/usb/hiddev15 16th USB HID device 2536 111 = /dev/usb/hiddev15 16th USB HID device
2537 112 = /dev/usb/auer0 1st auerswald ISDN device
2538 ...
2539 127 = /dev/usb/auer15 16th auerswald ISDN device
2563 128 = /dev/usb/brlvgr0 First Braille Voyager device 2540 128 = /dev/usb/brlvgr0 First Braille Voyager device
2564 ... 2541 ...
2565 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device 2542 131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
@@ -2810,6 +2787,20 @@ Your cooperation is appreciated.
2810 ... 2787 ...
2811 190 = /dev/ttyUL3 Xilinx uartlite - port 3 2788 190 = /dev/ttyUL3 Xilinx uartlite - port 3
2812 191 = /dev/xvc0 Xen virtual console - port 0 2789 191 = /dev/xvc0 Xen virtual console - port 0
2790 192 = /dev/ttyPZ0 pmac_zilog - port 0
2791 ...
2792 195 = /dev/ttyPZ3 pmac_zilog - port 3
2793 196 = /dev/ttyTX0 TX39/49 serial port 0
2794 ...
2795 204 = /dev/ttyTX7 TX39/49 serial port 7
2796 205 = /dev/ttySC0 SC26xx serial port 0
2797 206 = /dev/ttySC1 SC26xx serial port 1
2798 207 = /dev/ttySC2 SC26xx serial port 2
2799 208 = /dev/ttySC3 SC26xx serial port 3
2800 209 = /dev/ttyMAX0 MAX3100 serial port 0
2801 210 = /dev/ttyMAX1 MAX3100 serial port 1
2802 211 = /dev/ttyMAX2 MAX3100 serial port 2
2803 212 = /dev/ttyMAX3 MAX3100 serial port 3
2813 2804
2814205 char Low-density serial ports (alternate device) 2805205 char Low-density serial ports (alternate device)
2815 0 = /dev/culu0 Callout device for ttyLU0 2806 0 = /dev/culu0 Callout device for ttyLU0
@@ -3145,6 +3136,20 @@ Your cooperation is appreciated.
3145 1 = /dev/blockrom1 Second ROM card's translation layer interface 3136 1 = /dev/blockrom1 Second ROM card's translation layer interface
3146 ... 3137 ...
3147 3138
3139259 block Block Extended Major
3140 Used dynamically to hold additional partition minor
3141 numbers and allow large numbers of partitions per device
3142
3143259 char FPGA configuration interfaces
3144 0 = /dev/icap0 First Xilinx internal configuration
3145 1 = /dev/icap1 Second Xilinx internal configuration
3146
3147260 char OSD (Object-based-device) SCSI Device
3148 0 = /dev/osd0 First OSD Device
3149 1 = /dev/osd1 Second OSD Device
3150 ...
3151 255 = /dev/osd255 256th OSD Device
3152
3148 **** ADDITIONAL /dev DIRECTORY ENTRIES 3153 **** ADDITIONAL /dev DIRECTORY ENTRIES
3149 3154
3150This section details additional entries that should or may exist in 3155This section details additional entries that should or may exist in