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Merge tag 'for-5.14/libata-2021-06-27' of git://git.kernel.dk/linux-block

Browse Source 
Pull libata updates from Jens Axboe:
 "The big change in this round is that we're finally in a position where
  we can sanely remove the old drivers/ide/ code, as libata covers
  everything we need by now.

  This is exciting for two reasons:

   1) we delete a lot of legacy code that doesn't really meet the
      standards we have today, and

   2) it enables us to clean up various bits in the block layer that
      exist only because of the old IDE code.

  Outside of that, just a few minor fixes here, fixups for warnings,
  etc"

* tag 'for-5.14/libata-2021-06-27' of git://git.kernel.dk/linux-block: (29 commits)
  ata: rb532_cf: remove redundant codes
  ide: remove the legacy ide driver
  m68k: use libata instead of the legacy ide driver
  ARM: disable CONFIG_IDE in pxa_defconfig
  ARM: disable CONFIG_IDE in footbridge_defconfig
  alpha: use libata instead of the legacy ide driver
  pata_cypress: add a module option to disable BM-DMA
  ata: pata_macio: Avoid overwriting initialised field in 'pata_macio_sht'
  ata: pata_serverworks: Avoid overwriting initialised field in 'serverworks_osb4_sht
  ata: pata_sc1200: sc1200_sht'Avoid overwriting initialised field in '
  ata: pata_cs5530: Avoid overwriting initialised field in 'cs5530_sht'
  ata: pata_cs5520: Avoid overwriting initialised field in 'cs5520_sht'
  ata: pata_atiixp: Avoid overwriting initialised field in 'atiixp_sht'
  ata: sata_nv: Do not over-write initialise fields in 'nv_adma_sht' and 'nv_swncq_sht'
  ata: sata_mv: Do not over-write initialise fields in 'mv6_sht'
  ata: sata_sil24: Do not over-write initialise fields in 'sil24_sht'
  ata: ahci: Ensure initialised fields are not overwritten in AHCI_SHT()
  ata: include: libata: Move fields commonly over-written to separate MACRO
  ahci: Add support for Dell S140 and later controllers
  ata: ahci_sunxi: Disable DIPM
  ...
This commit is contained in:
Linus Torvalds
2021-06-28 10:39:46 -07:00
parent 66d9282523 1af11d098d
commit 43bd8a67cd
136 changed files with 202 additions and 41613 deletions
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799
Documentation/userspace-api/ioctl/hdio.rst
View File

@@ -7,8 +7,8 @@ Summary of `HDIO_` ioctl calls
November, 2004
This document attempts to describe the ioctl(2) calls supported by
the HD/IDE layer. These are by-and-large implemented (as of Linux 2.6)
in drivers/ide/ide.c and drivers/block/scsi_ioctl.c
the HD/IDE layer. These are by-and-large implemented (as of Linux 5.11)
drivers/ata/libata-scsi.c.
ioctl values are listed in <linux/hdreg.h>. As of this writing, they
are as follows:
@@ -17,50 +17,17 @@ are as follows:
======================= =======================================
HDIO_GETGEO get device geometry
HDIO_GET_UNMASKINTR get current unmask setting
HDIO_GET_MULTCOUNT get current IDE blockmode setting
HDIO_GET_QDMA get use-qdma flag
HDIO_SET_XFER set transfer rate via proc
HDIO_OBSOLETE_IDENTITY OBSOLETE, DO NOT USE
HDIO_GET_KEEPSETTINGS get keep-settings-on-reset flag
HDIO_GET_32BIT get current io_32bit setting
HDIO_GET_NOWERR get ignore-write-error flag
HDIO_GET_DMA get use-dma flag
HDIO_GET_NICE get nice flags
HDIO_GET_IDENTITY get IDE identification info
HDIO_GET_WCACHE get write cache mode on|off
HDIO_GET_ACOUSTIC get acoustic value
HDIO_GET_ADDRESS get sector addressing mode
HDIO_GET_BUSSTATE get the bus state of the hwif
HDIO_TRISTATE_HWIF execute a channel tristate
HDIO_DRIVE_RESET execute a device reset
HDIO_DRIVE_TASKFILE execute raw taskfile
HDIO_DRIVE_TASK execute task and special drive command
HDIO_DRIVE_CMD execute a special drive command
HDIO_DRIVE_CMD_AEB HDIO_DRIVE_TASK
======================= =======================================
ioctls that pass non-pointer values:
======================= =======================================
HDIO_SET_MULTCOUNT change IDE blockmode
HDIO_SET_UNMASKINTR permit other irqs during I/O
HDIO_SET_KEEPSETTINGS keep ioctl settings on reset
HDIO_SET_32BIT change io_32bit flags
HDIO_SET_NOWERR change ignore-write-error flag
HDIO_SET_DMA change use-dma flag
HDIO_SET_PIO_MODE reconfig interface to new speed
HDIO_SCAN_HWIF register and (re)scan interface
HDIO_SET_NICE set nice flags
HDIO_UNREGISTER_HWIF unregister interface
HDIO_SET_WCACHE change write cache enable-disable
HDIO_SET_ACOUSTIC change acoustic behavior
HDIO_SET_BUSSTATE set the bus state of the hwif
HDIO_SET_QDMA change use-qdma flag
HDIO_SET_ADDRESS change lba addressing modes
HDIO_SET_IDE_SCSI Set scsi emulation mode on/off
HDIO_SET_SCSI_IDE not implemented yet
======================= =======================================
@@ -137,143 +104,6 @@ HDIO_GETGEO
HDIO_GET_UNMASKINTR
get current unmask setting
usage::
long val;
ioctl(fd, HDIO_GET_UNMASKINTR, &val);
inputs:
none
outputs:
The value of the drive's current unmask setting
HDIO_SET_UNMASKINTR
permit other irqs during I/O
usage::
unsigned long val;
ioctl(fd, HDIO_SET_UNMASKINTR, val);
inputs:
New value for unmask flag
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 1]
- EBUSY Controller busy
HDIO_GET_MULTCOUNT
get current IDE blockmode setting
usage::
long val;
ioctl(fd, HDIO_GET_MULTCOUNT, &val);
inputs:
none
outputs:
The value of the current IDE block mode setting. This
controls how many sectors the drive will transfer per
interrupt.
HDIO_SET_MULTCOUNT
change IDE blockmode
usage::
int val;
ioctl(fd, HDIO_SET_MULTCOUNT, val);
inputs:
New value for IDE block mode setting. This controls how many
sectors the drive will transfer per interrupt.
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range supported by disk.
- EBUSY Controller busy or blockmode already set.
- EIO Drive did not accept new block mode.
notes:
Source code comments read::
This is tightly woven into the driver->do_special cannot
touch. DON'T do it again until a total personality rewrite
is committed.
If blockmode has already been set, this ioctl will fail with
-EBUSY
HDIO_GET_QDMA
get use-qdma flag
Not implemented, as of 2.6.8.1
HDIO_SET_XFER
set transfer rate via proc
Not implemented, as of 2.6.8.1
HDIO_OBSOLETE_IDENTITY
OBSOLETE, DO NOT USE
Same as HDIO_GET_IDENTITY (see below), except that it only
returns the first 142 bytes of drive identity information.
HDIO_GET_IDENTITY
get IDE identification info
@@ -308,60 +138,6 @@ HDIO_GET_IDENTITY
HDIO_GET_KEEPSETTINGS
get keep-settings-on-reset flag
usage::
long val;
ioctl(fd, HDIO_GET_KEEPSETTINGS, &val);
inputs:
none
outputs:
The value of the current "keep settings" flag
notes:
When set, indicates that kernel should restore settings
after a drive reset.
HDIO_SET_KEEPSETTINGS
keep ioctl settings on reset
usage::
long val;
ioctl(fd, HDIO_SET_KEEPSETTINGS, val);
inputs:
New value for keep_settings flag
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 1]
- EBUSY Controller busy
HDIO_GET_32BIT
get current io_32bit setting
@@ -387,288 +163,6 @@ HDIO_GET_32BIT
HDIO_GET_NOWERR
get ignore-write-error flag
usage::
long val;
ioctl(fd, HDIO_GET_NOWERR, &val);
inputs:
none
outputs:
The value of the current ignore-write-error flag
HDIO_GET_DMA
get use-dma flag
usage::
long val;
ioctl(fd, HDIO_GET_DMA, &val);
inputs:
none
outputs:
The value of the current use-dma flag
HDIO_GET_NICE
get nice flags
usage::
long nice;
ioctl(fd, HDIO_GET_NICE, &nice);
inputs:
none
outputs:
The drive's "nice" values.
notes:
Per-drive flags which determine when the system will give more
bandwidth to other devices sharing the same IDE bus.
See <linux/hdreg.h>, near symbol IDE_NICE_DSC_OVERLAP.
HDIO_SET_NICE
set nice flags
usage::
unsigned long nice;
...
ioctl(fd, HDIO_SET_NICE, nice);
inputs:
bitmask of nice flags.
outputs:
none
error returns:
- EACCES Access denied: requires CAP_SYS_ADMIN
- EPERM Flags other than DSC_OVERLAP and NICE_1 set.
- EPERM DSC_OVERLAP specified but not supported by drive
notes:
This ioctl sets the DSC_OVERLAP and NICE_1 flags from values
provided by the user.
Nice flags are listed in <linux/hdreg.h>, starting with
IDE_NICE_DSC_OVERLAP. These values represent shifts.
HDIO_GET_WCACHE
get write cache mode on|off
usage::
long val;
ioctl(fd, HDIO_GET_WCACHE, &val);
inputs:
none
outputs:
The value of the current write cache mode
HDIO_GET_ACOUSTIC
get acoustic value
usage::
long val;
ioctl(fd, HDIO_GET_ACOUSTIC, &val);
inputs:
none
outputs:
The value of the current acoustic settings
notes:
See HDIO_SET_ACOUSTIC
HDIO_GET_ADDRESS
usage::
long val;
ioctl(fd, HDIO_GET_ADDRESS, &val);
inputs:
none
outputs:
The value of the current addressing mode:
= ===================
0 28-bit
1 48-bit
2 48-bit doing 28-bit
3 64-bit
= ===================
HDIO_GET_BUSSTATE
get the bus state of the hwif
usage::
long state;
ioctl(fd, HDIO_SCAN_HWIF, &state);
inputs:
none
outputs:
Current power state of the IDE bus. One of BUSSTATE_OFF,
BUSSTATE_ON, or BUSSTATE_TRISTATE
error returns:
- EACCES Access denied: requires CAP_SYS_ADMIN
HDIO_SET_BUSSTATE
set the bus state of the hwif
usage::
int state;
...
ioctl(fd, HDIO_SCAN_HWIF, state);
inputs:
Desired IDE power state. One of BUSSTATE_OFF, BUSSTATE_ON,
or BUSSTATE_TRISTATE
outputs:
none
error returns:
- EACCES Access denied: requires CAP_SYS_RAWIO
- EOPNOTSUPP Hardware interface does not support bus power control
HDIO_TRISTATE_HWIF
execute a channel tristate
Not implemented, as of 2.6.8.1. See HDIO_SET_BUSSTATE
HDIO_DRIVE_RESET
execute a device reset
usage::
int args[3]
...
ioctl(fd, HDIO_DRIVE_RESET, args);
inputs:
none
outputs:
none
error returns:
- EACCES Access denied: requires CAP_SYS_ADMIN
- ENXIO No such device: phy dead or ctl_addr == 0
- EIO I/O error: reset timed out or hardware error
notes:
- Execute a reset on the device as soon as the current IO
operation has completed.
- Executes an ATAPI soft reset if applicable, otherwise
executes an ATA soft reset on the controller.
HDIO_DRIVE_TASKFILE
execute raw taskfile
@@ -1026,14 +520,6 @@ HDIO_DRIVE_TASK
HDIO_DRIVE_CMD_AEB
HDIO_DRIVE_TASK
Not implemented, as of 2.6.8.1
HDIO_SET_32BIT
change io_32bit flags
@@ -1059,284 +545,3 @@ HDIO_SET_32BIT
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 3]
- EBUSY Controller busy
HDIO_SET_NOWERR
change ignore-write-error flag
usage::
int val;
ioctl(fd, HDIO_SET_NOWERR, val);
inputs:
New value for ignore-write-error flag. Used for ignoring
WRERR_STAT
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 1]
- EBUSY Controller busy
HDIO_SET_DMA
change use-dma flag
usage::
long val;
ioctl(fd, HDIO_SET_DMA, val);
inputs:
New value for use-dma flag
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 1]
- EBUSY Controller busy
HDIO_SET_PIO_MODE
reconfig interface to new speed
usage::
long val;
ioctl(fd, HDIO_SET_PIO_MODE, val);
inputs:
New interface speed.
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 255]
- EBUSY Controller busy
HDIO_SCAN_HWIF
register and (re)scan interface
usage::
int args[3]
...
ioctl(fd, HDIO_SCAN_HWIF, args);
inputs:
======= =========================
args[0] io address to probe
args[1] control address to probe
args[2] irq number
======= =========================
outputs:
none
error returns:
- EACCES Access denied: requires CAP_SYS_RAWIO
- EIO Probe failed.
notes:
This ioctl initializes the addresses and irq for a disk
controller, probes for drives, and creates /proc/ide
interfaces as appropriate.
HDIO_UNREGISTER_HWIF
unregister interface
usage::
int index;
ioctl(fd, HDIO_UNREGISTER_HWIF, index);
inputs:
index index of hardware interface to unregister
outputs:
none
error returns:
- EACCES Access denied: requires CAP_SYS_RAWIO
notes:
This ioctl removes a hardware interface from the kernel.
Currently (2.6.8) this ioctl silently fails if any drive on
the interface is busy.
HDIO_SET_WCACHE
change write cache enable-disable
usage::
int val;
ioctl(fd, HDIO_SET_WCACHE, val);
inputs:
New value for write cache enable
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 1]
- EBUSY Controller busy
HDIO_SET_ACOUSTIC
change acoustic behavior
usage::
int val;
ioctl(fd, HDIO_SET_ACOUSTIC, val);
inputs:
New value for drive acoustic settings
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 254]
- EBUSY Controller busy
HDIO_SET_QDMA
change use-qdma flag
Not implemented, as of 2.6.8.1
HDIO_SET_ADDRESS
change lba addressing modes
usage::
int val;
ioctl(fd, HDIO_SET_ADDRESS, val);
inputs:
New value for addressing mode
= ===================
0 28-bit
1 48-bit
2 48-bit doing 28-bit
= ===================
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 2]
- EBUSY Controller busy
- EIO Drive does not support lba48 mode.
HDIO_SET_IDE_SCSI
usage::
long val;
ioctl(fd, HDIO_SET_IDE_SCSI, val);
inputs:
New value for scsi emulation mode (?)
outputs:
none
error return:
- EINVAL Called on a partition instead of the whole disk device
- EACCES Access denied: requires CAP_SYS_ADMIN
- EINVAL value out of range [0 1]
- EBUSY Controller busy
HDIO_SET_SCSI_IDE
Not implemented, as of 2.6.8.1