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ide: remove the legacy ide driver

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The legay ide driver has been replace with libata starting in 2003 and has
been scheduled for removal for a while.  Finally kill it off so that we
can start cleaning up various bits of cruft it forced on the block layer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2021-06-16 15:46:58 +02:00
committed by Jens Axboe
parent b90257bfdd
commit b7fb14d3ac
100 changed files with 2 additions and 41173 deletions
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Documentation/userspace-api/ioctl/hdio.rst
+2 -797
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