* Use ->data_phase to set ->handler in do_rw_taskfile() instead of
setting ->handler in callers of ide_raw_taskfile()/do_rw_taskfile().
* Unexport task_no_data_intr() and make it static.
There should be no functionality changes caused by this patch.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Fix __ide_do_rw_disk() to use ->OUTBSYNC instead of ->OUTB
(needed for pmac and scc_pata host drivers).
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add 'data_buf' and 'nsect' variables in ide_taskfile_ioctl()
to cache data buffer pointer and number of sectors to transfer
(this allows us to have only one ide_diag_taskfile() call).
* Add IDE_TFLAG_WRITE taskfile flag and use it to check whether
the REQ_RW request flag should be set.
* Move ->command_type handling from ide_diag_taskfile() to
ide_taskfile_ioctl() and use ->req_cmd instead of ->command_type.
* Add 'nsect' parameter to ide_raw_taskfile().
* Merge ide_diag_taskfile() into ide_raw_taskfile().
* Initialize ->data_phase explicitly in idedisk_prepare_flush(),
ide_start_power_step() and ide_disk_special().
* Remove no longer needed 'command_type' field from ide_task_t.
* Add #ifndef/#endif __KERNEL__ to <linux/hdreg.h> around no
longer used by kernel IDE_DRIVE_TASK_* and TASKFILE_* defines.
There should be no functionality changes caused by this patch.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Remove ata_nsector_t, ata_data_t (unused) and atapi_bcount_t.
While at it:
* replace 'HWIF(drive)' by 'hwif'
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Based on the earlier work by Tejun Heo.
There should be no functionality changes caused by this patch.
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Set taskfile flags for REQ_TYPE_ATA_TASKFILE requests before
adding the request to the queue.
* Cleanup execute_drive_cmd().
* Remove unnecessary writes to HOB taskfile registers when using
LBA48 disk for the following cases:
- Power Management requests
(WIN_FLUSH_CACHE[_EXT], WIN_STANDBYNOW1, WIN_IDLEIMMEDIATE commands)
- special commands (WIN_SPECIFY, WIN_RESTORE, WIN_SETMULT)
- Host Protected Area support (WIN_READ_NATIVE_MAX, WIN_SET_MAX)
- /proc/ide/ SMART support (WIN_SMART with SMART_ENABLE,
SMART_READ_VALUES and SMART_READ_THRESHOLDS subcommands)
- write cache enabling/disabling in ide-disk
(WIN_SETFEATURES with SETFEATURES_{EN,DIS}_WCACHE)
- write cache flushing in ide-disk (WIN_FLUSH_CACHE[_EXT])
- acoustic management in ide-disk
(WIN_SETFEATURES with SETFEATURES_{EN,DIS}_AAM)
- door (un)locking in ide-disk (WIN_DOORLOCK, WIN_DOORUNLOCK)
- /proc/ide/hd?/identify support (WIN_IDENTIFY)
- ACPI _GTF taskfiles
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add IDE_TFLAG_OUT_DEVICE taskfile flag to indicate the need of writing
the Device register and handle it in ide_tf_load().
Update ide_tf_load() and {do_rw,flagged}_taskfile() users accordingly.
* Use struct ide_taskfile and ide_tf_load() in execute_drive_cmd().
* Make the debugging code dump all taskfile registers for both
REQ_ATA_TYPE_{CMD,TASK} requests and move it to ide_tf_load()
so it also covers REQ_ATA_TYPE_TASKFILE requests.
There should be no functionality changes caused by this patch
(unless DEBUG is defined).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Based on the earlier work by Tejun Heo.
* Move setting IDE_TFLAG_LBA48 taskfile flag from do_rw_taskfile()
function to the callers.
* Add IDE_TFLAG_FLAGGED taskfile flag for flagged taskfiles coming
from ide_taskfile_ioctl(). Check it instead of ->tf_out_flags.all.
* Add IDE_TFLAG_OUT_DATA taskfile flag to indicate the need to load
IDE data register in ide_tf_load().
* Add IDE_TFLAG_OUT_* taskfile flags to indicate the need to load
particular IDE taskfile registers in ide_tf_load().
* Update do_rw_taskfile() and ide_tf_load() users to set respective
IDE_TFLAG_OUT_* taksfile flags.
* Add task_dma_ok() helper.
* Use IDE_TFLAG_FLAGGED taskfile flag to select HIHI mask in ide_tf_load().
* Use do_rw_taskfile() in flagged_taskfile().
* Remove no longer needed 'tf_out_flags' field from ide_task_t.
There should be no functionality changes caused by this patch.
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Add ide_no_data_taskfile() helper and convert ide_raw_taskfile() w/ NO DATA
protocol users to use it instead.
* Set ->data_phase explicitly in ide_no_data_taskfile()
(TASKFILE_NO_DATA is defined as 0x0000).
* Unexport task_no_data_intr().
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Based on the earlier work by Tejun Heo.
* Add 'tf_flags' field (for taskfile flags) to ide_task_t.
* Add IDE_TFLAG_LBA48 taskfile flag for LBA48 taskfiles.
* Add IDE_TFLAG_NO_SELECT_MASK taskfile flag for __ide_do_rw_disk()
which doesn't use SELECT_MASK() (looks like a bug but it requires
some more investigation).
* Split off ide_tf_load() helper from do_rw_taskfile().
* Convert __ide_do_rw_disk() to use ide_tf_load().
There should be no functionality changes caused by this patch.
Cc: Tejun Heo <htejun@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Based on the earlier work by Tejun Heo.
There should be no functionality changes caused by this patch.
Cc: Tejun Heo <htejun@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Load IDE_SECTOR_REG after IDE_FEATURE_REG and IDE_NSECTOR_REG when using CHS.
This patch is basically a preparation for the next one which converts
__ide_do_rw_disk() to use struct ide_taskfile.
It shouldn't affect anything (just a usual paranoia to separate changes
which change the way in which hardware is accessed from code cleanups).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Merge idedisk_{read_native,set}_max_address_ext() into
idedisk_{read_native,set}_max_address().
v2:
* Remove LBA48 code leftover from idedisk_read_native_max_address()
('high' variable initialization). (Noticed by Sergei).
There should be no functionality changes caused by this patch.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* Don't set write-only ide_task_t.hobRegister[6] and ide_task_t.hobRegister[7]
in idedisk_set_max_address_ext().
* Add struct ide_taskfile and use it in ide_task_t instead of tfRegister[]
and hobRegister[].
* Remove no longer needed IDE_CONTROL_OFFSET_HOB define.
* Add #ifndef/#endif __KERNEL__ around definitions of {task,hob}_struct_t.
While at it:
* Use ATA_LBA define for LBA bit (0x40) as suggested by Tejun Heo.
v2:
* Add missing newlines. (Noticed by Sergei)
* Use ~ATA_LBA instead of 0xBF. (Noticed by Sergei)
* Use unnamed unions for error/feature and status/command.
(Suggested by Sergei).
There should be no functionality changes caused by this patch.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Remove task_ioreg_t typedef from the kernel code (but leave it
in <linux/hdreg.h> for #ifndef/#endif __KERNEL__ case).
While at it also move sata_ioreg_t typedef under #ifndef/#endif __KERNEL__.
v2:
Remove name of the second parameter from ide_execute_command() declaration.
(Noticed by Sergei).
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* ide_xfer_verbose() fixups:
- beautify returned mode names
- fix PIO5 reporting
- make it return 'const char *'
* Change printk() level from KERN_DEBUG to KERN_INFO in ide_find_dma_mode().
* Add ide_id_dma_bug() helper based on ide_dma_verbose() to check for invalid
DMA info in identify block.
* Use ide_id_dma_bug() in ide_tune_dma() and ide_driveid_update().
As a result DMA won't be tuned or will be disabled after tuning if device
reports inconsistent info about enabled DMA mode (ide_dma_verbose() does the
same checks while the IDE device is probed by ide-{cd,disk} device driver).
* Remove no longer needed ide_dma_verbose().
This patch should fix the following problem with out-of-sync IDE messages
reported by Nick Warne:
hdd: ATAPI 48X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache<7>hdd:
skipping word 93 validity check
, UDMA(66)
and later debugged by Mark Lord to be caused by:
ide_dma_verbose()
printk( ... "2048kB Cache");
eighty_ninty_three()
printk(KERN_DEBUG "%s: skipping word 93 validity check\n");
ide_dma_verbose()
printk(", UDMA(66)"
Please note that as a result ide-{cd,disk} device drivers won't report the
DMA speed used but this is intended since now DMA mode being used is always
reported by IDE core code.
v2:
* fixes suggested by Randy:
- use KERN_CONT for printk()-s in ide-{cd,disk}.c
- don't remove argument name from ide_xfer_verbose() declaration
v3:
* Remove incorrect check for (id->field_valid & 1) from ide_id_dma_bug()
(spotted by Sergei).
* "XFER SLOW" -> "PIO SLOW" in ide_xfer_verbose() (suggested by Sergei).
* Fix ide_find_dma_mode() to report the correct mode ('mode' after being
limited by 'req_mode').
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Nick Warne <nick@ukfsn.org>
Cc: Mark Lord <lkml@rtr.ca>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Add IDE_HFLAG_NO_LBA48[_DMA] host flags, use it instead of hwif->no_lba48[_dma]
and then remove no longer needed hwif->no_lba48[_dma]. As a side-effect
this change fixes hwif->no_lba48_dma not being restored by ide_hwif_restore().
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This disk reports total number of sectors instead of maximum sector address
in response to READ_NATIVE_MAX_ADDRESS command and also happily accepts
SET_MAX_ADDRESS command with the bogus value. This results in +1 sector
capacity being used and errors on attempts to use the last sector.
...
hdd: Host Protected Area detected.
    current capacity is 78165360 sectors (40020 MB)
    native  capacity is 78165361 sectors (40020 MB)
hdd: Host Protected Area disabled.
...
hdd: reading: block=78165360, sectors=1, buffer=0xc1e63000
hdd: dma_intr: status=0x51 { DriveReady SeekComplete Error }
hdd: dma_intr: error=0x10 { SectorIdNotFound }, LBAsect=78165360, sector=78165360
...
Add hpa_list[] table and workaround the issue in idedisk_check_hpa().
v2:
* Add missing export and improve patch description a bit.
v3:
* Add list termination. (From Mikko)
Fixes kernel bugzilla bug #8816.
Thanks to Mikko for investigating the issue and helping with this patch.
Cc: Mikko Rapeli <mikko.rapeli@iki.fi>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Some of the code has been gradually transitioned to using the proper
struct request_queue, but there's lots left. So do a full sweet of
the kernel and get rid of this typedef and replace its uses with
the proper type.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
The IDE driver uses a semaphore as mutex.
Use the mutex API instead of the (binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
--
Currently when system which have HPA require HPA to be detected and
disabled upon resume from RAM or disk. The current IDE drivers do not do
this nor does libata (obviously it since it doesn't support HPA yet).
I have implemented this into the current IDE drivers and it has been
tested by many others since 7/15/2006 in bug number 6840:
http://bugzilla.kernel.org/show_bug.cgi?id=6840
and it has been confirmed to work fine with no problems.
bart: added drv != NULL check to generic_ide_suspend()
From: Lee Trager <lt73@cs.drexel.edu>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* move
__ide_add_setting()
ide_add_setting()
__ide_remove_setting()
auto_remove_settings()
ide_find_setting_by_name()
ide_read_setting()
ide_write_setting()
set_xfer_rate()
ide_add_generic_settings()
ide_register_subdriver()
ide_unregister_subdriver()
from ide.c to ide-proc.c
* set_{io_32bit,pio_mode,using_dma}() cannot be marked static now, fix it
* rename ide_[un]register_subdriver() to ide_proc_[un]register_driver(),
update device drivers to use new names
* add CONFIG_IDE_PROC_FS=n versions of ide_proc_[un]register_driver()
and ide_add_generic_settings()
* make ide_find_setting_by_name(), ide_{read,write}_setting()
and ide_{add,remove}_proc_entries() static
* cover IDE settings code in device drivers with CONFIG_IDE_PROC_FS #ifdef,
also while at it cover with CONFIG_IDE_PROC_FS #ifdef ide_driver_t.proc
* remove bogus comment from ide.h
* cover with CONFIG_IDE_PROC_FS #ifdef .proc and .settings in ide_drive_t
Besides saner code this patch results in the IDE core smaller by ~2 kB
(on x86-32) and IDE disk driver by ~1 kB (ditto) when CONFIG_IDE_PROC_FS=n.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* do write permission and min/max checks in ide_procset_t functions
* ide-disk.c: drive->id is always available so cleanup "multcount" setting
accordingly
* ide-disk.c: "address" setting was incorrectly defined as type TYPE_INTA,
fix it by using type TYPE_BYTE and updating ide_drive_t->adressing field,
the bug didn't trigger because this IDE setting uses custom ->set function
* ide.c: add set_ksettings() for handling HDIO_SET_KEEPSETTINGS ioctl
* ide.c: add set_unmaskirq() for handling HDIO_SET_UNMASKINTR ioctl
* handle ioctls directly in generic_ide_ioclt() and idedisk_ioctl()
instead of using IDE settings to deal with them
* remove no longer needed ide_find_setting_by_ioctl() and {read,write}_ioctl
fields from ide_settings_t, also remove now unused TYPE_INTA handling
v2:
* add missing EXPORT_SYMBOL_GPL(ide_setting_sem) needed now for ide-disk
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
All important information/features should be already available through
sysfs and ioctl interfaces.
Add CONFIG_IDE_PROC_FS (CONFIG_SCSI_PROC_FS rip-off) config option,
disabling it makes IDE driver ~5 kB smaller (on x86-32).
While at it add CONFIG_PROC_FS=n versions of proc_ide_{create,destroy}()
and remove no longer needed #ifdefs.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This field is no longer used by the core IDE code so fix ide-{disk,floppy}
drivers to keep openers count in the driver specific objects and remove
it from ide-{cd,scsi,tape} drivers (it was write-only).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Right now ->flags is a bit of a mess: some are request types, and
others are just modifiers. Clean this up by splitting it into
->cmd_type and ->cmd_flags. This allows introduction of generic
Linux block message types, useful for sending generic Linux commands
to block devices.
Signed-off-by: Jens Axboe <axboe@suse.de>
Some drives claim they support cache flushing, but get seriously
confused if you try. Add this option to be able to boot with
barriers enabled by default.
Signed-off-by: Jens Axboe <axboe@suse.de>
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)
[PATCH] devfs: Remove it from the feature_removal.txt file
[PATCH] devfs: Last little devfs cleanups throughout the kernel tree.
[PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV
[PATCH] devfs: Remove the tty_driver devfs_name field as it's no longer needed
[PATCH] devfs: Remove the line_driver devfs_name field as it's no longer needed
[PATCH] devfs: Remove the videodevice devfs_name field as it's no longer needed
[PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed
[PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer needed
[PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree
[PATCH] devfs: Remove devfs_remove() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree
[PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree
[PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree
[PATCH] devfs: Remove devfs support from the sound subsystem
[PATCH] devfs: Remove devfs support from the ide subsystem.
[PATCH] devfs: Remove devfs support from the serial subsystem
[PATCH] devfs: Remove devfs from the init code
[PATCH] devfs: Remove devfs from the partition code
...
Add an LED trigger for IDE disk activity to the ide-disk driver.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
In some embedded systems the IDE hardware interface may only support 16-bit
or smaller accesses. Allow the interface to specify if this is the case
and don't allow the drive or user to override the setting.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This does not show up unless you #define DEBUG in the file, which most
people wouldn't do. On PPC405, at least, "sector_t" is unsigned long,
which doesn't match %llx/%llu. Since sector# may well be >32 bits, promote
the value to match the format.
Signed-off-by: Michael Richardson <mcr@xelerance.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Restore a missing space in a log message, which was accidentally
removed by a previous change: 3e087b5754
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Jens Axboe <axboe@suse.de>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch stops CompactFlash devices being marked as removable. They are
not removable (as defined by Linux) as the media and device are
inseparable. When a card is removed, the whole device is removed from the
system and never sits in a media-less state.
This stops some nasty udev device creation/destruction loops.
Further, once this change is made, there is no need for ide to can be
removed from ide_drive_t.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove the "inline" keyword from a bunch of big functions in the kernel with
the goal of shrinking it by 30kb to 40kb
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
HDIO_GETGEO is implemented in most block drivers, and all of them have to
duplicate the code to copy the structure to userspace, as well as getting
the start sector. This patch moves that to common code [1] and adds a
->getgeo method to fill out the raw kernel hd_geometry structure. For many
drivers this means ->ioctl can go away now.
[1] the s390 block drivers are odd in this respect. xpram sets ->start
to 4 always which seems more than odd, and the dasd driver shifts
the start offset around, probably because of it's non-standard
sector size.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@suse.de>
Cc: <mike.miller@hp.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Paolo Giarrusso <blaisorblade@yahoo.it>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Neil Brown <neilb@cse.unsw.edu.au>
Cc: Markus Lidel <Markus.Lidel@shadowconnect.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Update IDE to use new blk_ordered. This change makes the
following behavior changes.
* Partial completion of the barrier request is handled as
failure of the whole ordered sequence. No more partial
completion for barrier requests.
* Any failure of pre or post flush request results in failure
of the whole ordered sequence.
So, successfully completed ordered sequence guarantees that
all requests prior to the barrier made to physical medium and,
then, the while barrier request made to the physical medium.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
IDE: MODALIAS support for autoloading of ide-cd, ide-disk, ...
Add MODULE_ALIAS to IDE midlayer modules: ide-disk, ide-cd, ide-floppy and
ide-tape, to autoload these modules depending on the probed media type of
the IDE device.
It is used by udev and replaces the former agent shell script of the hotplug
package, which was required to lookup the media type in the proc filesystem.
Using proc was racy, cause the media file is created after the hotplug event
is sent out.
The module autoloading does not take any effect, until something like the
following udev rule is configured:
SUBSYSTEM=="ide", ACTION=="add", ENV{MODALIAS}=="?*", RUN+="/sbin/modprobe $env{MODALIAS}"
The module ide-scsi will not be autoloaded, cause it requires manual
configuration. It can't be, and never was supported for automatic setup in
the hotplug package. Adding a MODULE_ALIAS to ide-scsi for all supported
media types, would just lead to a default blacklist entry anyway.
$ modinfo ide-disk
filename: /lib/modules/2.6.15-rc4-g1b0997f5/kernel/drivers/ide/ide-disk.ko
description: ATA DISK Driver
alias: ide:*m-disk*
license: GPL
...
$ modprobe -vn ide:m-disk
insmod /lib/modules/2.6.15-rc4-g1b0997f5/kernel/drivers/ide/ide-disk.ko
$ cat /sys/bus/ide/devices/0.0/modalias
ide:m-disk
It also adds attributes to the IDE device:
$ tree /sys/bus/ide/devices/0.0/
/sys/bus/ide/devices/0.0/
|-- bus -> ../../../../../../../bus/ide
|-- drivename
|-- media
|-- modalias
|-- power
| |-- state
| `-- wakeup
`-- uevent
$ cat /sys/bus/ide/devices/0.0/{modalias,drivename,media}
ide:m-disk
hda
disk
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
