linux/Documentation/userspace-api/ioctl/ioctl-number.rst
Linus Torvalds acc5965b9f Char/Misc and other driver changes for 6.11-rc1
Here is the "big" set of char/misc and other driver subsystem changes
 for 6.11-rc1.  Nothing major in here, just loads of new drivers and
 updates.  Included in here are:
   - IIO api updates and new drivers added
   - wait_interruptable_timeout() api cleanups for some drivers
   - MODULE_DESCRIPTION() additions for loads of drivers
   - parport out-of-bounds fix
   - interconnect driver updates and additions
   - mhi driver updates and additions
   - w1 driver fixes
   - binder speedups and fixes
   - eeprom driver updates
   - coresight driver updates
   - counter driver update
   - new misc driver additions
   - other minor api updates
 
 All of these, EXCEPT for the final Kconfig build fix for 32bit systems,
 have been in linux-next for a while with no reported issues.  The
 Kconfig fixup went in 29 hours ago, so might have missed the latest
 linux-next, but was acked by everyone involved.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char / misc and other driver updates from Greg KH:
 "Here is the "big" set of char/misc and other driver subsystem changes
  for 6.11-rc1. Nothing major in here, just loads of new drivers and
  updates. Included in here are:

   - IIO api updates and new drivers added

   - wait_interruptable_timeout() api cleanups for some drivers

   - MODULE_DESCRIPTION() additions for loads of drivers

   - parport out-of-bounds fix

   - interconnect driver updates and additions

   - mhi driver updates and additions

   - w1 driver fixes

   - binder speedups and fixes

   - eeprom driver updates

   - coresight driver updates

   - counter driver update

   - new misc driver additions

   - other minor api updates

  All of these, EXCEPT for the final Kconfig build fix for 32bit
  systems, have been in linux-next for a while with no reported issues.
  The Kconfig fixup went in 29 hours ago, so might have missed the
  latest linux-next, but was acked by everyone involved"

* tag 'char-misc-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits)
  misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit systems
  misc: delete Makefile.rej
  binder: fix hang of unregistered readers
  misc: Kconfig: add a new dependency for MARVELL_CN10K_DPI
  virtio: add missing MODULE_DESCRIPTION() macro
  agp: uninorth: add missing MODULE_DESCRIPTION() macro
  spmi: add missing MODULE_DESCRIPTION() macros
  dev/parport: fix the array out-of-bounds risk
  samples: configfs: add missing MODULE_DESCRIPTION() macro
  misc: mrvl-cn10k-dpi: add Octeon CN10K DPI administrative driver
  misc: keba: Fix missing AUXILIARY_BUS dependency
  slimbus: Fix struct and documentation alignment in stream.c
  MAINTAINERS: CC dri-devel list on Qualcomm FastRPC patches
  misc: fastrpc: use coherent pool for untranslated Compute Banks
  misc: fastrpc: support complete DMA pool access to the DSP
  misc: fastrpc: add missing MODULE_DESCRIPTION() macro
  misc: fastrpc: Add missing dev_err newlines
  misc: fastrpc: Use memdup_user()
  nvmem: core: Implement force_ro sysfs attribute
  nvmem: Use sysfs_emit() for type attribute
  ...
2024-07-19 15:55:08 -07:00

394 lines
26 KiB
ReStructuredText

=============
Ioctl Numbers
=============
19 October 1999
Michael Elizabeth Chastain
<mec@shout.net>
If you are adding new ioctl's to the kernel, you should use the _IO
macros defined in <linux/ioctl.h>:
====== == ============================================
_IO an ioctl with no parameters
_IOW an ioctl with write parameters (copy_from_user)
_IOR an ioctl with read parameters (copy_to_user)
_IOWR an ioctl with both write and read parameters.
====== == ============================================
'Write' and 'read' are from the user's point of view, just like the
system calls 'write' and 'read'. For example, a SET_FOO ioctl would
be _IOW, although the kernel would actually read data from user space;
a GET_FOO ioctl would be _IOR, although the kernel would actually write
data to user space.
The first argument to _IO, _IOW, _IOR, or _IOWR is an identifying letter
or number from the table below. Because of the large number of drivers,
many drivers share a partial letter with other drivers.
If you are writing a driver for a new device and need a letter, pick an
unused block with enough room for expansion: 32 to 256 ioctl commands.
You can register the block by patching this file and submitting the
patch to Linus Torvalds. Or you can e-mail me at <mec@shout.net> and
I'll register one for you.
The second argument to _IO, _IOW, _IOR, or _IOWR is a sequence number
to distinguish ioctls from each other. The third argument to _IOW,
_IOR, or _IOWR is the type of the data going into the kernel or coming
out of the kernel (e.g. 'int' or 'struct foo'). NOTE! Do NOT use
sizeof(arg) as the third argument as this results in your ioctl thinking
it passes an argument of type size_t.
Some devices use their major number as the identifier; this is OK, as
long as it is unique. Some devices are irregular and don't follow any
convention at all.
Following this convention is good because:
(1) Keeping the ioctl's globally unique helps error checking:
if a program calls an ioctl on the wrong device, it will get an
error rather than some unexpected behaviour.
(2) The 'strace' build procedure automatically finds ioctl numbers
defined with _IO, _IOW, _IOR, or _IOWR.
(3) 'strace' can decode numbers back into useful names when the
numbers are unique.
(4) People looking for ioctls can grep for them more easily when
this convention is used to define the ioctl numbers.
(5) When following the convention, the driver code can use generic
code to copy the parameters between user and kernel space.
This table lists ioctls visible from user land for Linux/x86. It contains
most drivers up to 2.6.31, but I know I am missing some. There has been
no attempt to list non-X86 architectures or ioctls from drivers/staging/.
==== ===== ======================================================= ================================================================
Code Seq# Include File Comments
(hex)
==== ===== ======================================================= ================================================================
0x00 00-1F linux/fs.h conflict!
0x00 00-1F scsi/scsi_ioctl.h conflict!
0x00 00-1F linux/fb.h conflict!
0x00 00-1F linux/wavefront.h conflict!
0x02 all linux/fd.h
0x03 all linux/hdreg.h
0x04 D2-DC linux/umsdos_fs.h Dead since 2.6.11, but don't reuse these.
0x06 all linux/lp.h
0x09 all linux/raid/md_u.h
0x10 00-0F drivers/char/s390/vmcp.h
0x10 10-1F arch/s390/include/uapi/sclp_ctl.h
0x10 20-2F arch/s390/include/uapi/asm/hypfs.h
0x12 all linux/fs.h BLK* ioctls
linux/blkpg.h
0x15 all linux/fs.h FS_IOC_* ioctls
0x1b all InfiniBand Subsystem
<http://infiniband.sourceforge.net/>
0x20 all drivers/cdrom/cm206.h
0x22 all scsi/sg.h
0x3E 00-0F linux/counter.h <mailto:linux-iio@vger.kernel.org>
'!' 00-1F uapi/linux/seccomp.h
'#' 00-3F IEEE 1394 Subsystem
Block for the entire subsystem
'$' 00-0F linux/perf_counter.h, linux/perf_event.h
'%' 00-0F include/uapi/linux/stm.h System Trace Module subsystem
<mailto:alexander.shishkin@linux.intel.com>
'&' 00-07 drivers/firewire/nosy-user.h
'*' 00-1F uapi/linux/user_events.h User Events Subsystem
<mailto:linux-trace-kernel@vger.kernel.org>
'1' 00-1F linux/timepps.h PPS kit from Ulrich Windl
<ftp://ftp.de.kernel.org/pub/linux/daemons/ntp/PPS/>
'2' 01-04 linux/i2o.h
'3' 00-0F drivers/s390/char/raw3270.h conflict!
'3' 00-1F linux/suspend_ioctls.h, conflict!
kernel/power/user.c
'8' all SNP8023 advanced NIC card
<mailto:mcr@solidum.com>
';' 64-7F linux/vfio.h
';' 80-FF linux/iommufd.h
'=' 00-3f uapi/linux/ptp_clock.h <mailto:richardcochran@gmail.com>
'@' 00-0F linux/radeonfb.h conflict!
'@' 00-0F drivers/video/aty/aty128fb.c conflict!
'A' 00-1F linux/apm_bios.h conflict!
'A' 00-0F linux/agpgart.h, conflict!
drivers/char/agp/compat_ioctl.h
'A' 00-7F sound/asound.h conflict!
'B' 00-1F linux/cciss_ioctl.h conflict!
'B' 00-0F include/linux/pmu.h conflict!
'B' C0-FF advanced bbus <mailto:maassen@uni-freiburg.de>
'B' 00-0F xen/xenbus_dev.h conflict!
'C' all linux/soundcard.h conflict!
'C' 01-2F linux/capi.h conflict!
'C' F0-FF drivers/net/wan/cosa.h conflict!
'D' all arch/s390/include/asm/dasd.h
'D' 40-5F drivers/scsi/dpt/dtpi_ioctl.h Dead since 2022
'D' 05 drivers/scsi/pmcraid.h
'E' all linux/input.h conflict!
'E' 00-0F xen/evtchn.h conflict!
'F' all linux/fb.h conflict!
'F' 01-02 drivers/scsi/pmcraid.h conflict!
'F' 20 drivers/video/fsl-diu-fb.h conflict!
'F' 20 linux/ivtvfb.h conflict!
'F' 20 linux/matroxfb.h conflict!
'F' 20 drivers/video/aty/atyfb_base.c conflict!
'F' 00-0F video/da8xx-fb.h conflict!
'F' 80-8F linux/arcfb.h conflict!
'F' DD video/sstfb.h conflict!
'G' 00-3F drivers/misc/sgi-gru/grulib.h conflict!
'G' 00-0F xen/gntalloc.h, xen/gntdev.h conflict!
'H' 00-7F linux/hiddev.h conflict!
'H' 00-0F linux/hidraw.h conflict!
'H' 01 linux/mei.h conflict!
'H' 02 linux/mei.h conflict!
'H' 03 linux/mei.h conflict!
'H' 00-0F sound/asound.h conflict!
'H' 20-40 sound/asound_fm.h conflict!
'H' 80-8F sound/sfnt_info.h conflict!
'H' 10-8F sound/emu10k1.h conflict!
'H' 10-1F sound/sb16_csp.h conflict!
'H' 10-1F sound/hda_hwdep.h conflict!
'H' 40-4F sound/hdspm.h conflict!
'H' 40-4F sound/hdsp.h conflict!
'H' 90 sound/usb/usx2y/usb_stream.h
'H' 00-0F uapi/misc/habanalabs.h conflict!
'H' A0 uapi/linux/usb/cdc-wdm.h
'H' C0-F0 net/bluetooth/hci.h conflict!
'H' C0-DF net/bluetooth/hidp/hidp.h conflict!
'H' C0-DF net/bluetooth/cmtp/cmtp.h conflict!
'H' C0-DF net/bluetooth/bnep/bnep.h conflict!
'H' F1 linux/hid-roccat.h <mailto:erazor_de@users.sourceforge.net>
'H' F8-FA sound/firewire.h
'I' all linux/isdn.h conflict!
'I' 00-0F drivers/isdn/divert/isdn_divert.h conflict!
'I' 40-4F linux/mISDNif.h conflict!
'K' all linux/kd.h
'L' 00-1F linux/loop.h conflict!
'L' 10-1F drivers/scsi/mpt3sas/mpt3sas_ctl.h conflict!
'L' E0-FF linux/ppdd.h encrypted disk device driver
<http://linux01.gwdg.de/~alatham/ppdd.html>
'M' all linux/soundcard.h conflict!
'M' 01-16 mtd/mtd-abi.h conflict!
and drivers/mtd/mtdchar.c
'M' 01-03 drivers/scsi/megaraid/megaraid_sas.h
'M' 00-0F drivers/video/fsl-diu-fb.h conflict!
'N' 00-1F drivers/usb/scanner.h
'N' 40-7F drivers/block/nvme.c
'N' 80-8F uapi/linux/ntsync.h NT synchronization primitives
<mailto:wine-devel@winehq.org>
'O' 00-06 mtd/ubi-user.h UBI
'P' all linux/soundcard.h conflict!
'P' 60-6F sound/sscape_ioctl.h conflict!
'P' 00-0F drivers/usb/class/usblp.c conflict!
'P' 01-09 drivers/misc/pci_endpoint_test.c conflict!
'P' 00-0F xen/privcmd.h conflict!
'P' 00-05 linux/tps6594_pfsm.h conflict!
'Q' all linux/soundcard.h
'R' 00-1F linux/random.h conflict!
'R' 01 linux/rfkill.h conflict!
'R' 20-2F linux/trace_mmap.h
'R' C0-DF net/bluetooth/rfcomm.h
'R' E0 uapi/linux/fsl_mc.h
'S' all linux/cdrom.h conflict!
'S' 80-81 scsi/scsi_ioctl.h conflict!
'S' 82-FF scsi/scsi.h conflict!
'S' 00-7F sound/asequencer.h conflict!
'T' all linux/soundcard.h conflict!
'T' 00-AF sound/asound.h conflict!
'T' all arch/x86/include/asm/ioctls.h conflict!
'T' C0-DF linux/if_tun.h conflict!
'U' all sound/asound.h conflict!
'U' 00-CF linux/uinput.h conflict!
'U' 00-EF linux/usbdevice_fs.h
'U' C0-CF drivers/bluetooth/hci_uart.h
'V' all linux/vt.h conflict!
'V' all linux/videodev2.h conflict!
'V' C0 linux/ivtvfb.h conflict!
'V' C0 linux/ivtv.h conflict!
'V' C0 media/si4713.h conflict!
'W' 00-1F linux/watchdog.h conflict!
'W' 00-1F linux/wanrouter.h conflict! (pre 3.9)
'W' 00-3F sound/asound.h conflict!
'W' 40-5F drivers/pci/switch/switchtec.c
'W' 60-61 linux/watch_queue.h
'X' all fs/xfs/xfs_fs.h, conflict!
fs/xfs/linux-2.6/xfs_ioctl32.h,
include/linux/falloc.h,
linux/fs.h,
'X' all fs/ocfs2/ocfs_fs.h conflict!
'X' 01 linux/pktcdvd.h conflict!
'Z' 14-15 drivers/message/fusion/mptctl.h
'[' 00-3F linux/usb/tmc.h USB Test and Measurement Devices
<mailto:gregkh@linuxfoundation.org>
'a' all linux/atm*.h, linux/sonet.h ATM on linux
<http://lrcwww.epfl.ch/>
'a' 00-0F drivers/crypto/qat/qat_common/adf_cfg_common.h conflict! qat driver
'b' 00-FF conflict! bit3 vme host bridge
<mailto:natalia@nikhefk.nikhef.nl>
'b' 00-0F linux/dma-buf.h conflict!
'c' 00-7F linux/comstats.h conflict!
'c' 00-7F linux/coda.h conflict!
'c' 00-1F linux/chio.h conflict!
'c' 80-9F arch/s390/include/asm/chsc.h conflict!
'c' A0-AF arch/x86/include/asm/msr.h conflict!
'd' 00-FF linux/char/drm/drm.h conflict!
'd' 02-40 pcmcia/ds.h conflict!
'd' F0-FF linux/digi1.h
'e' all linux/digi1.h conflict!
'f' 00-1F linux/ext2_fs.h conflict!
'f' 00-1F linux/ext3_fs.h conflict!
'f' 00-0F fs/jfs/jfs_dinode.h conflict!
'f' 00-0F fs/ext4/ext4.h conflict!
'f' 00-0F linux/fs.h conflict!
'f' 00-0F fs/ocfs2/ocfs2_fs.h conflict!
'f' 13-27 linux/fscrypt.h
'f' 81-8F linux/fsverity.h
'g' 00-0F linux/usb/gadgetfs.h
'g' 20-2F linux/usb/g_printer.h
'h' 00-7F conflict! Charon filesystem
<mailto:zapman@interlan.net>
'h' 00-1F linux/hpet.h conflict!
'h' 80-8F fs/hfsplus/ioctl.c
'i' 00-3F linux/i2o-dev.h conflict!
'i' 0B-1F linux/ipmi.h conflict!
'i' 80-8F linux/i8k.h
'i' 90-9F `linux/iio/*.h` IIO
'j' 00-3F linux/joystick.h
'k' 00-0F linux/spi/spidev.h conflict!
'k' 00-05 video/kyro.h conflict!
'k' 10-17 linux/hsi/hsi_char.h HSI character device
'l' 00-3F linux/tcfs_fs.h transparent cryptographic file system
<http://web.archive.org/web/%2A/http://mikonos.dia.unisa.it/tcfs>
'l' 40-7F linux/udf_fs_i.h in development:
<https://github.com/pali/udftools>
'm' 00-09 linux/mmtimer.h conflict!
'm' all linux/mtio.h conflict!
'm' all linux/soundcard.h conflict!
'm' all linux/synclink.h conflict!
'm' 00-19 drivers/message/fusion/mptctl.h conflict!
'm' 00 drivers/scsi/megaraid/megaraid_ioctl.h conflict!
'n' 00-7F linux/ncp_fs.h and fs/ncpfs/ioctl.c
'n' 80-8F uapi/linux/nilfs2_api.h NILFS2
'n' E0-FF linux/matroxfb.h matroxfb
'o' 00-1F fs/ocfs2/ocfs2_fs.h OCFS2
'o' 00-03 mtd/ubi-user.h conflict! (OCFS2 and UBI overlaps)
'o' 40-41 mtd/ubi-user.h UBI
'o' 01-A1 `linux/dvb/*.h` DVB
'p' 00-0F linux/phantom.h conflict! (OpenHaptics needs this)
'p' 00-1F linux/rtc.h conflict!
'p' 40-7F linux/nvram.h
'p' 80-9F linux/ppdev.h user-space parport
<mailto:tim@cyberelk.net>
'p' A1-A5 linux/pps.h LinuxPPS
<mailto:giometti@linux.it>
'q' 00-1F linux/serio.h
'q' 80-FF linux/telephony.h Internet PhoneJACK, Internet LineJACK
linux/ixjuser.h <http://web.archive.org/web/%2A/http://www.quicknet.net>
'r' 00-1F linux/msdos_fs.h and fs/fat/dir.c
's' all linux/cdk.h
't' 00-7F linux/ppp-ioctl.h
't' 80-8F linux/isdn_ppp.h
't' 90-91 linux/toshiba.h toshiba and toshiba_acpi SMM
'u' 00-1F linux/smb_fs.h gone
'u' 20-3F linux/uvcvideo.h USB video class host driver
'u' 40-4f linux/udmabuf.h userspace dma-buf misc device
'v' 00-1F linux/ext2_fs.h conflict!
'v' 00-1F linux/fs.h conflict!
'v' 00-0F linux/sonypi.h conflict!
'v' 00-0F media/v4l2-subdev.h conflict!
'v' 20-27 arch/powerpc/include/uapi/asm/vas-api.h VAS API
'v' C0-FF linux/meye.h conflict!
'w' all CERN SCI driver
'y' 00-1F packet based user level communications
<mailto:zapman@interlan.net>
'z' 00-3F CAN bus card conflict!
<mailto:hdstich@connectu.ulm.circular.de>
'z' 40-7F CAN bus card conflict!
<mailto:oe@port.de>
'z' 10-4F drivers/s390/crypto/zcrypt_api.h conflict!
'|' 00-7F linux/media.h
0x80 00-1F linux/fb.h
0x81 00-1F linux/vduse.h
0x89 00-06 arch/x86/include/asm/sockios.h
0x89 0B-DF linux/sockios.h
0x89 E0-EF linux/sockios.h SIOCPROTOPRIVATE range
0x89 F0-FF linux/sockios.h SIOCDEVPRIVATE range
0x8A 00-1F linux/eventpoll.h
0x8B all linux/wireless.h
0x8C 00-3F WiNRADiO driver
<http://www.winradio.com.au/>
0x90 00 drivers/cdrom/sbpcd.h
0x92 00-0F drivers/usb/mon/mon_bin.c
0x93 60-7F linux/auto_fs.h
0x94 all fs/btrfs/ioctl.h Btrfs filesystem
and linux/fs.h some lifted to vfs/generic
0x97 00-7F fs/ceph/ioctl.h Ceph file system
0x99 00-0F 537-Addinboard driver
<mailto:buk@buks.ipn.de>
0xA0 all linux/sdp/sdp.h Industrial Device Project
<mailto:kenji@bitgate.com>
0xA1 0 linux/vtpm_proxy.h TPM Emulator Proxy Driver
0xA2 all uapi/linux/acrn.h ACRN hypervisor
0xA3 80-8F Port ACL in development:
<mailto:tlewis@mindspring.com>
0xA3 90-9F linux/dtlk.h
0xA4 00-1F uapi/linux/tee.h Generic TEE subsystem
0xA4 00-1F uapi/asm/sgx.h <mailto:linux-sgx@vger.kernel.org>
0xA5 01-05 linux/surface_aggregator/cdev.h Microsoft Surface Platform System Aggregator
<mailto:luzmaximilian@gmail.com>
0xA5 20-2F linux/surface_aggregator/dtx.h Microsoft Surface DTX driver
<mailto:luzmaximilian@gmail.com>
0xAA 00-3F linux/uapi/linux/userfaultfd.h
0xAB 00-1F linux/nbd.h
0xAC 00-1F linux/raw.h
0xAD 00 Netfilter device in development:
<mailto:rusty@rustcorp.com.au>
0xAE 00-1F linux/kvm.h Kernel-based Virtual Machine
<mailto:kvm@vger.kernel.org>
0xAE 40-FF linux/kvm.h Kernel-based Virtual Machine
<mailto:kvm@vger.kernel.org>
0xAE 20-3F linux/nitro_enclaves.h Nitro Enclaves
0xAF 00-1F linux/fsl_hypervisor.h Freescale hypervisor
0xB0 all RATIO devices in development:
<mailto:vgo@ratio.de>
0xB1 00-1F PPPoX
<mailto:mostrows@styx.uwaterloo.ca>
0xB2 00 arch/powerpc/include/uapi/asm/papr-vpd.h powerpc/pseries VPD API
<mailto:linuxppc-dev>
0xB2 01-02 arch/powerpc/include/uapi/asm/papr-sysparm.h powerpc/pseries system parameter API
<mailto:linuxppc-dev>
0xB3 00 linux/mmc/ioctl.h
0xB4 00-0F linux/gpio.h <mailto:linux-gpio@vger.kernel.org>
0xB5 00-0F uapi/linux/rpmsg.h <mailto:linux-remoteproc@vger.kernel.org>
0xB6 all linux/fpga-dfl.h
0xB7 all uapi/linux/remoteproc_cdev.h <mailto:linux-remoteproc@vger.kernel.org>
0xB7 all uapi/linux/nsfs.h <mailto:Andrei Vagin <avagin@openvz.org>>
0xB8 01-02 uapi/misc/mrvl_cn10k_dpi.h Marvell CN10K DPI driver
0xC0 00-0F linux/usb/iowarrior.h
0xCA 00-0F uapi/misc/cxl.h
0xCA 10-2F uapi/misc/ocxl.h
0xCA 80-BF uapi/scsi/cxlflash_ioctl.h
0xCB 00-1F CBM serial IEC bus in development:
<mailto:michael.klein@puffin.lb.shuttle.de>
0xCC 00-0F drivers/misc/ibmvmc.h pseries VMC driver
0xCD 01 linux/reiserfs_fs.h
0xCE 01-02 uapi/linux/cxl_mem.h Compute Express Link Memory Devices
0xCF 02 fs/smb/client/cifs_ioctl.h
0xDB 00-0F drivers/char/mwave/mwavepub.h
0xDD 00-3F ZFCP device driver see drivers/s390/scsi/
<mailto:aherrman@de.ibm.com>
0xE5 00-3F linux/fuse.h
0xEC 00-01 drivers/platform/chrome/cros_ec_dev.h ChromeOS EC driver
0xEE 00-09 uapi/linux/pfrut.h Platform Firmware Runtime Update and Telemetry
0xF3 00-3F drivers/usb/misc/sisusbvga/sisusb.h sisfb (in development)
<mailto:thomas@winischhofer.net>
0xF6 all LTTng Linux Trace Toolkit Next Generation
<mailto:mathieu.desnoyers@efficios.com>
0xF8 all arch/x86/include/uapi/asm/amd_hsmp.h AMD HSMP EPYC system management interface driver
<mailto:nchatrad@amd.com>
0xFD all linux/dm-ioctl.h
0xFE all linux/isst_if.h
==== ===== ======================================================= ================================================================