Commit Graph

2725 Commits

Author SHA1 Message Date
Borislav Petkov e69d800f7e ide: add helpers for preparing sense requests
This is in preparation of removing the queueing of a sense request out
of the IRQ handler path.

Use struct request_sense as a general sense buffer for all ATAPI
devices ide-{floppy,tape,cd}.

tj: * blk_get_request(__GFP_WAIT) can't be called from do_request() as
      it can cause deadlock.  Converted to use inline struct request
      and blk_rq_init().

    * Added xfer / cdb len selection depending on device type.

    * All sense prep logics folded into ide_prep_sense() which never
      fails.

    * hwif->rq clearing and sense_rq used handling moved into
      ide_queue_sense_rq().

    * blk_rq_map_kern() conversion is moved to later patch.

CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-28 07:37:30 +02:00
Tejun Heo 1f181d2b15 ide-cd: don't abuse rq->buffer
Impact: rq->buffer usage cleanup

ide-cd uses rq->buffer to carry pointer to the original request when
issuing REQUEST_SENSE.  Use rq->special instead.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-28 07:37:29 +02:00
Tejun Heo ac0b0113dd ide-atapi: don't abuse rq->buffer
Impact: rq->buffer usage cleanup

ide-atapi uses rq->buffer as private opaque value for internal special
requests.  rq->special isn't used for these cases (the only case where
rq->special is used is for ide-tape rw requests).  Use rq->special
instead.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-28 07:37:29 +02:00
Tejun Heo d868ca2430 ide-taskfile: don't abuse rq->buffer
Impact: rq->buffer usage cleanup

ide_raw_taskfile() directly uses rq->buffer to carry pointer to the
data buffer.  This complicates both block interface and ide backend
request handling.  Use blk_rq_map_kern() instead and drop special
handling for REQ_TYPE_ATA_TASKFILE from ide_map_sg().

Note that REQ_RW setting is moved upwards as blk_rq_map_kern() uses it
to initialize bio rw flag.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-28 07:37:29 +02:00
Tejun Heo 8968932e54 ide-floppy: block pc always uses bio
Impact: remove unnecessary code path

Block pc requests always use bio and rq->data is always NULL.  No need
to worry about !rq->bio cases in idefloppy_block_pc_cmd().  Note that
ide-atapi uses ide_pio_bytes() for bio PIO transfer which handle sg
fine.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-28 07:37:29 +02:00
Tejun Heo 59a4f6f355 ide-cd: clear sense buffer before issuing request sense
Impact: code simplification

ide_cd_request_sense_fixup() clears the tail of the sense buffer if
the device didn't completely fill it.  This patch makes
cdrom_queue_request_sense() clear the sense buffer before issuing the
command instead of clearing it afterwards.  This simplifies code and
eases future changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-28 07:37:29 +02:00
Tejun Heo b2963ac173 ide: don't set REQ_SOFTBARRIER
ide doesn't have to worry about REQ_SOFTBARRIER.  Don't set it.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-28 07:37:28 +02:00
Tejun Heo 220d06b553 ide: use blk_run_queue() instead of blk_start_queueing()
blk_start_queueing() is being phased out in favor of
[__]blk_run_queue().  Switch.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-28 07:37:28 +02:00
Tejun Heo 0de57fb93b ide-tape: remove back-to-back REQUEST_SENSE detection
Impact: fix an oops which always triggers

ide_tape_issue_pc() assumed drive->pc isn't NULL on invocation when
checking for back-to-back request sense issues but drive->pc can be
NULL and even when it's not NULL, it's not safe to dereference it once
the previous command is complete because pc could have been freed or
was on stack.  Kill back-to-back REQUEST_SENSE detection.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-28 07:37:28 +02:00
Bartlomiej Zolnierkiewicz b656eba122 Merge branch 'for-linus' into for-next 2009-04-23 22:56:58 +02:00
Bartlomiej Zolnierkiewicz d7f5143522 palm_bk3710: palm_bk3710_udmatimings[] CodingStyle fixup
Remove superfluous commas and add missing whitespaces.

Noticed-by: Joe Perches <joe@perches.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-23 22:53:45 +02:00
David Brownell 33e86019f7 palm_bk3710: those registers/bitfields don't exist
Bugfixes noted by checking the code against the controller
documentation (TI document number SPRUE21):

 - Remove declarations for eight non-existent registers (!);
   and remove accesses to two of them.

 - Remove access to various non-existent bitfields in some of
   the registers which *do* exist (those fields must-be-zero).

 - Provide comment to replace bogus reset logic (removed above,
   it relied on non-existent bitfields).  Resets require GPIO
   help; this driver doesn't currently know about that.

With some minor cleanup:  relocate a comment, avoid an extra
lookup of the PIO timings.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-23 22:53:43 +02:00
Bartlomiej Zolnierkiewicz 24fc484ab2 Merge branch 'for-linus' into for-next 2009-04-22 20:38:45 +02:00
Bruno Prémont b0aedb04ea ide: Stop disks on reboot for laptop which cuts power
My laptop (Acer Travelmate 660) always cuts the power when rebooting
which causes the disk to emergency-park it's head.

Add a dmi check to stop disk as for shutdown on this laptop.

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-22 20:33:41 +02:00
Helge Deller a1f9a89c90 ide-cd: fix kernel crash on hppa regression
With 2.6.30-rc2 I face a kernel crash on the 32bit hppa architecture 
due to ide-cd when udev creates the device nodes at startup:

Kernel Fault: Code=26 regs=8ed34c40 (Addr=00000024)
IASQ: 00000000 00000000 IAOQ: 1034b5ac 1034b5b0
 IIR: 4ab30048    ISR: 00000000  IOR: 00000024
 CPU:        0   CR30: 8ed34000 CR31: ffff55ff
 ORIG_R28: 00000000
 IAOQ[0]: ide_complete_rq+0x2c/0x70
 IAOQ[1]: ide_complete_rq+0x30/0x70
 RP(r2): cdrom_newpc_intr+0x178/0x46c
Backtrace:
 [<1035c608>] cdrom_newpc_intr+0x178/0x46c
 [<1034c494>] ide_intr+0x1b0/0x214
 [<1016d284>] handle_IRQ_event+0x70/0x150
 [<1016d4b0>] __do_IRQ+0x14c/0x1cc
 [<102f7864>] superio_interrupt+0x88/0xbc
 [<1016d284>] handle_IRQ_event+0x70/0x150
 [<1016d4b0>] __do_IRQ+0x14c/0x1cc
 [<10112efc>] do_cpu_irq_mask+0x9c/0xd0
 [<10116068>] intr_return+0x0/0x4

This crash seems to happen due to an uninitialized variable "rc".
The compiler even warns about that:
  CC      drivers/ide/ide-cd.o                                                         
/mnt/sda4/home/cvs/parisc/git-kernel/linus-linux-2.6/drivers/ide/ide-cd.c: In function `cdrom_newpc_intr':
/mnt/sda4/home/cvs/parisc/git-kernel/linus-linux-2.6/drivers/ide/ide-cd.c:612: warning: `rc' might be used uninitialized in this function

After applying the trivial patch below, which just initializes 
the variable to zero, the kernel doesn't crash any longer:

Starting the hotplug events dispatcher: udevd.
Synthesizing the initial hotplug events...
hda: command error: status=0x51 { DriveReady SeekComplete Error }
hda: command error: error=0x54 <3>{ AbortedCommand LastFailedSense=0x05 }
ide: failed opcode was: unknown
done.

Signed-off-by: Helge Deller <deller@gmx.de>
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Cc: Linus <torvalds@linux-foundation.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-22 20:33:40 +02:00
David Brownell db2f38c22e palm_bk3710: UDMA performance fix
Fix UDMA throughput bug:  tCYC averages t2CYCTYP/2, but the code
previously assumed it was the same as t2CYCTYP.  (That is, it was
using just one clock edge, not both.)  Move the table's type
declaration so it's adjacent to the table, making it more clear
what those numbers mean.

On one system this change increased throughput by almost 4x: UDMA/66
sometimes topped 23 MB/sec (on a drive known to do much better).  On
another system it was around a 10% win (UDMA/66 up to 7+ MB/sec).

The difference might be caused by the ratio between memory and IDE
clocks.  In the system with large speedup, this was exactly 2 (as a
workaround for a rev 1.1 silicon bug).  The other system used a more
standard ratio of 1.63 (and rev 2.1 silicon) ... clock domain synch
might have some issues, they're not unheard-of.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-22 20:33:40 +02:00
Tejun Heo 2ecf0a57c6 ide-dma: don't reset request fields on dma_timeout_retry()
Impact: drop unnecessary code

Now that everything uses bio and block operations, there is no need to
reset request fields manually when retrying a request.  Every field is
guaranteed to be always valid.  Drop unnecessary request field
resetting from ide_dma_timeout_retry().

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-21 12:16:56 +09:00
Tejun Heo 2c316bb57a ide: drop rq->data handling from ide_map_sg()
Impact: remove code path which is no longer necessary

All IDE data transfers now use rq->bio.  Simplify ide_map_sg()
accordingly.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-19 08:46:03 +09:00
Tejun Heo 6d7003877c ide-atapi: kill unused fields and callbacks
Impact: remove fields and code paths which are no longer necessary

Now that ide-tape uses standard mechanisms to transfer data, special
case handling for bh handling can be dropped from ide-atapi.  Drop the
followings.

* pc->cur_pos, b_count, bh and b_data
* drive->pc_update_buffers() and pc_io_buffers().

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 08:46:03 +09:00
Tejun Heo 07bd9686c5 ide-tape: simplify read/write functions
Impact: cleanup

idetape_chrdev_read/write() functions are unnecessarily complex when
everything can be handled in a single loop.  Collapse
idetape_add_chrdev_read/write_request() into the rw functions and
simplify the implementation.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 08:46:03 +09:00
Tejun Heo 6bb11dd14f ide-tape: use byte size instead of sectors on rw issue functions
Impact: cleanup

Byte size is what most issue functions deal with, make
idetape_queue_rw_tail() and its wrappers take byte size instead of
sector counts.  idetape_chrdev_read() and write() functions are
converted to use tape->buffer_size instead of ctl from tape->cap.

This cleans up code a little bit and will ease the next r/w
reimplementation.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 08:46:03 +09:00
Tejun Heo 88f1b941c5 ide-tape: unify r/w init paths
Impact: cleanup

Read and write init paths are almost identical.  Unify them into
idetape_init_rw().

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 08:46:02 +09:00
Tejun Heo 963da55c4b ide-tape: kill idetape_bh
Impact: kill now unnecessary idetape_bh

With everything using standard mechanisms, there is no need for
idetape_bh anymore.  Kill it and use tape->buf, cur and valid to
describe data buffer instead.

Changes worth mentioning are...

* idetape_queue_rq_tail() now always queue tape->buf and and adjusts
  buffer state properly before completion.

* idetape_pad_zeros() clears the buffer only once.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 08:46:02 +09:00
Tejun Heo 21d9c5d227 ide-tape: use standard data transfer mechanism
Impact: use standard way to transfer data

ide-tape uses rq in an interesting way.  For r/w requests, rq->special
is used to carry a private buffer management structure idetape_bh and
rq->nr_sectors and current_nr_sectors are initialized to the number of
idetape blocks which isn't necessary 512 bytes.  Also,
rq->current_nr_sectors is used to report back the residual count in
units of idetape blocks.

This peculiarity taxes both block layer and ide.  ide-atapi has
different paths and hooks to accomodate it and what a rq means becomes
quite confusing and making changes at the block layer becomes quite
difficult and error-prone.

This patch makes ide-tape use bio instead.  With the previous patch,
ide-tape currently is using single contiguos buffer so replacing it
isn't difficult.  Data buffer is mapped into bio using
blk_rq_map_kern() in idetape_queue_rw_tail().  idetape_io_buffers()
and idetape_update_buffers() are dropped and pc->bh is set to null to
tell ide-atapi to use standard data transfer mechanism and idetape_bh
byte counts are updated by the issuer on completion using the residual
count.

This change also nicely removes the FIXME in ide_pc_intr() where
ide-tape rqs need to be completed using ide_rq_bytes() instead of
blk_rq_bytes() (although this didn't really matter as the request
didn't have bio).

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <jens.axboe@oracle.com>
2009-04-19 08:46:02 +09:00
Tejun Heo 35ab8d3251 ide-tape: use single continuous buffer
Impact: simpler buffer allocation and handling, kills OOM, fix DMA transfers

ide-tape has its own multiple buffer mechanism using struct
idetape_bh.  It allocates buffer with decreasing order-of-two
allocations so that it results in minimum number of segments.
However, the implementation is quite complex and works in a way that
no other block or ide driver works necessitating a lot of special case
handling.

The benefit this complex allocation scheme brings is questionable as
PIO or DMA the number of segments (16 maximum) doesn't make any
noticeable difference and it also doesn't negate the need for multiple
order allocation which can fail under memory pressure or high
fragmentation although it does lower the highest order necessary by
one when the buffer size isn't power of two.

As the first step to remove the custom buffer management, this patch
makes ide-tape allocate single continous buffer.  The maximum order is
four.  I doubt the change would cause any trouble but if it ever
matters, it should be converted to regular sg mechanism like everyone
else and even in that case dropping custom buffer handling and moving
to standard mechanism first make sense as an intermediate step.

This patch makes the first bh to contain the whole buffer and drops
multi bh handling code.  Following patches will make further changes.

This patch has the side effect of killing OOM triggered by allocation
path and fixing DMA transfers.  Previously, bug in alloc path
triggered OOM on command issue and commands were passed to DMA engine
without DMA-mapping all the segments.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 08:46:02 +09:00
Tejun Heo b3071d190d ide-atapi,tape,floppy: allow ->pc_callback() to change rq->data_len
Impact: allow residual count implementation in ->pc_callback()

rq->data_len has two duties - carrying the number of input bytes on
issue and carrying residual count back to the issuer on completion.
ide-atapi completion callback ->pc_callback() is the right place to do
this but currently ide-atapi depends on rq->data_len carrying the
original request size after calling ->pc_callback() to complete the pc
request.

This patch makes ide_pc_intr(), ide_tape_issue_pc() and
ide_floppy_issue_pc() cache length to complete before calling
->pc_callback() so that it can modify rq->data_len as necessary.

Note: As using rq->data_len for two purposes can make cases like this
      incorrect in subtle ways, future changes will introduce separate
      field for residual count.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <jens.axboe@oracle.com>
2009-04-19 08:46:02 +09:00
Tejun Heo ea7066afcd ide-tape,floppy: fix failed command completion after request sense
Impact: fix infinite retry loop

After a command failed, ide-tape and floppy inserts REQUEST_SENSE in
front of the failed command and according to the result, sets
pc->retries, flags and errors.  After REQUEST_SENSE is complete, the
failed command is again at the front of the queue and if the verdict
was to terminate the request, the issue functions tries to complete it
directly by calling drive->pc_callback() and returning ide_stopped.

However, drive->pc_callback() doesn't complete a request.  It only
prepares for completion of the request.  As a result, this creates an
infinite loop where the failed request is retried perpetually.

Fix it by actually ending the request by calling ide_complete_rq().

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 08:46:02 +09:00
Tejun Heo fc38b521dc ide-pm: don't abuse rq->data
Impact: cleanup rq->data usage

ide-pm uses rq->data to carry pointer to struct request_pm_state
through request queue and rq->special is used to carray pointer to
local struct ide_cmd, which isn't necessary.  Use rq->special for
request_pm_state instead and use local ide_cmd in
ide_start_power_step().

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-19 07:00:43 +09:00
Tejun Heo 5c4be57249 ide-cd,atapi: use bio for internal commands
Impact: unify request data buffer handling

rq->data is used mostly to pass kernel buffer through request queue
without using bio.  There are only a couple of places which still do
this in kernel and converting to bio isn't difficult.

This patch converts ide-cd and atapi to use bio instead of rq->data
for request sense and internal pc commands.  With previous change to
unify sense request handling, this is relatively easily achieved by
adding blk_rq_map_kern() during sense_rq prep and PC issue.

If blk_rq_map_kern() fails for sense, the error is deferred till sense
issue and aborts the failed command which triggered the sense.  Note
that this is a slim possibility as sense prep is done on each command
issue, so for the above condition to actually trigger, all preps since
the last sense issue till the issue of the request which would require
a sense should fail.

* do_request functions might sleep now.  This should be okay as ide
  request_fn - do_ide_request() - is invoked only from make_request
  and plug work.  Make sure this is the case by adding might_sleep()
  to do_ide_request().

* Functions which access the read sense data before the sense request
  is complete now should access bio_data(sense_rq->bio) as the sense
  buffer might have been copied during blk_rq_map_kern().

* ide-tape updated to map sg.

* cdrom_do_block_pc() now doesn't have to deal with REQ_TYPE_ATA_PC
  special case.  Simplified.

* tp_ops->output/input_data path dropped from ide_pc_intr().

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 07:00:42 +09:00
Borislav Petkov 6b544fcc8c ide-atapi: convert ide-{floppy,tape} to using preallocated sense buffer
Since we're issuing REQ_TYPE_SENSE now we need to allow those types of
rqs in the ->do_request callbacks. As a future improvement, sense_len
assignment might be unified across all ATAPI devices. Borislav to
check with specs and test.

As a result, get rid of ide_queue_pc_head() and
drive->request_sense_rq.

tj: * Init request sense ide_atapi_pc from sense request.  In the
      longer timer, it would probably better to fold
      ide_create_request_sense_cmd() into its only current user -
      ide_floppy_get_format_progress().

    * ide_retry_pc() no longer takes @disk.

CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 07:00:42 +09:00
Borislav Petkov 746d5e4327 ide-cd: convert to using generic sense request
Preallocate a sense request in the ->do_request method and reinitialize
it only on demand, in case it's been consumed in the IRQ handler path.
The reason for this is that we don't want to be mapping rq to bio in
the IRQ path and introduce all kinds of unnecessary hacks to the block
layer.

tj: * Both user and kernel PC requests expect sense data to be stored
      in separate storage other than drive->sense_data.  Copy sense
      data to rq->sense on completion if rq->sense is not NULL.  This
      fixes bogus sense data on PC requests.

As a result, remove cdrom_queue_request_sense.

CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 07:00:42 +09:00
Borislav Petkov a1df5169f9 ide: add helpers for preparing sense requests
This is in preparation of removing the queueing of a sense request out
of the IRQ handler path.

Use struct request_sense as a general sense buffer for all ATAPI
devices ide-{floppy,tape,cd}.

tj: * blk_get_request(__GFP_WAIT) can't be called from do_request() as
      it can cause deadlock.  Converted to use inline struct request
      and blk_rq_init().

    * Added xfer / cdb len selection depending on device type.

    * All sense prep logics folded into ide_prep_sense() which never
      fails.

    * hwif->rq clearing and sense_rq used handling moved into
      ide_queue_sense_rq().

    * blk_rq_map_kern() conversion is moved to later patch.

CC: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 07:00:42 +09:00
Tejun Heo cbfd082abf ide-cd: don't abuse rq->buffer
Impact: rq->buffer usage cleanup

ide-cd uses rq->buffer to carry pointer to the original request when
issuing REQUEST_SENSE.  Use rq->special instead.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-19 07:00:42 +09:00
Tejun Heo c267cc1c4d ide-atapi: don't abuse rq->buffer
Impact: rq->buffer usage cleanup

ide-atapi uses rq->buffer as private opaque value for internal special
requests.  rq->special isn't used for these cases (the only case where
rq->special is used is for ide-tape rw requests).  Use rq->special
instead.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-19 07:00:42 +09:00
Tejun Heo eace4cb04c ide-taskfile: don't abuse rq->buffer
Impact: rq->buffer usage cleanup

ide_raw_taskfile() directly uses rq->buffer to carry pointer to the
data buffer.  This complicates both block interface and ide backend
request handling.  Use blk_rq_map_kern() instead and drop special
handling for REQ_TYPE_ATA_TASKFILE from ide_map_sg().

Note that REQ_RW setting is moved upwards as blk_rq_map_kern() uses it
to initialize bio rw flag.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-19 07:00:42 +09:00
Tejun Heo 7f006dc24f ide-floppy: block pc always uses bio
Impact: remove unnecessary code path

Block pc requests always use bio and rq->data is always NULL.  No need
to worry about !rq->bio cases in idefloppy_block_pc_cmd().  Note that
ide-atapi uses ide_pio_bytes() for bio PIO transfer which handle sg
fine.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
2009-04-19 07:00:42 +09:00
Tejun Heo 1873b90cde ide-cd: clear sense buffer before issuing request sense
Impact: code simplification

ide_cd_request_sense_fixup() clears the tail of the sense buffer if
the device didn't completely fill it.  This patch makes
cdrom_queue_request_sense() clear the sense buffer before issuing the
command instead of clearing it afterwards.  This simplifies code and
eases future changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 07:00:41 +09:00
Tejun Heo 55f3f39942 ide: don't set REQ_SOFTBARRIER
ide doesn't have to worry about REQ_SOFTBARRIER.  Don't set it.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 07:00:41 +09:00
Tejun Heo 853280a4dc ide: use blk_run_queue() instead of blk_start_queueing()
blk_start_queueing() is being phased out in favor of
[__]blk_run_queue().  Switch.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 07:00:41 +09:00
Tejun Heo 1e75540ec5 ide-tape: remove back-to-back REQUEST_SENSE detection
Impact: fix an oops which always triggers

ide_tape_issue_pc() assumed drive->pc isn't NULL on invocation when
checking for back-to-back request sense issues but drive->pc can be
NULL and even when it's not NULL, it's not safe to dereference it once
the previous command is complete because pc could have been freed or
was on stack.  Kill back-to-back REQUEST_SENSE detection.

Signed-off-by: Tejun Heo <tj@kernel.org>
2009-04-19 07:00:41 +09:00
Sergei Shtylyov 15da90b516 cs5536: define dma_sff_read_status() method
The driver somehow got merged with the initializer for the dma_sff_read_status()
method missing which caused kernel panic on bootup.

This should fix the kernel.org bug #13026...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Reported-by: Arnd Hannemann <hannemann@nets.rwth-aachen.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-18 17:42:20 +02:00
Bartlomiej Zolnierkiewicz f505d49ffd ide: fix barriers support
Freeing non-slab objects is bad and results in an oops.  Fix it.

Reported-and-tested-by: Andrew Price <andy@andrewprice.me.uk>
Cc: Theodore Tso <tytso@mit.edu>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-18 17:42:20 +02:00
Jack Stone d5f840bf74 ide: Remove void casts
Remove uneeded void casts

Signed-off-by: Jack Stone <jwjstone@fastmail.fm>
Cc: jeff@garzik.org
Cc: kernel-janitors@vger.kernel.org
Cc: Jack Stone <jwjstone@fastmail.fm>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-18 17:42:19 +02:00
Sergei Shtylyov 59c8d04f5e hpt366: use ATA_DMA_* constants
Use ATA_DMA_* constants instead of the bare numbers for the BMIDE register bits.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-18 17:42:19 +02:00
Sergei Shtylyov c018f1ee5c hpt366: fix HPT370 DMA timeouts
The big driver change in 2.4.19-rc1 introduced a regression for many HPT370[A]
chips -- DMA stopped to work completely, only causing endless timeouts...

The culprit has been identified (at last!): it turned to be the code resetting
the DMA state machine before each transfer. Stop doing it now as this counter-
measure has clearly caused more harm than good.

This should fix the kernel.org bug #7703.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-18 17:42:19 +02:00
Stanislaw Gruszka fb4252e594 at91_ide: turn on PIO 6 support
As we have already PIO 6 transfer mode supported in IDE layer, we can turn
it on in the driver.

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Tested-by: "Steve Wootton" <swootton@esi-estech.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:04 +02:00
Stanislaw Gruszka 55c590b64e at91_ide: remove unused ide_mm_{outb,inb}
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
2009-04-08 14:13:04 +02:00
Borislav Petkov 3c8a48e9a9 ide-cd: reverse NOT_READY sense key logic
Make the case of flushing the drive's cache explicit.

There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:03 +02:00
Sergei Shtylyov 3153c26b54 ide: refactor tf_read() method
Simplify tf_read() method, making it deal only with 'struct ide_taskfile' and
the validity flags that the upper layer passes, and factoring out the code that
deals with the high order bytes into ide_tf_readback() to be called from the
only two functions interested, ide_complete_cmd() and ide_dump_sector().

This should stop the needless code duplication in this method and so make
it about twice smaller than it was; along with simplifying the setup for
the method call, this should save both time and space...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:03 +02:00
Sergei Shtylyov c9ff9e7b64 ide: refactor tf_load() method
Simplify tf_load() method, making it deal only with 'struct ide_taskfile' and
the validity flags that the upper layer passes, and moving the code that deals
with the high order bytes into the only function interested, do_rw_taskfile().

This should stop the needless code duplication in this method and so make
it about twice smaller than it was; along with simplifying the setup for the
method call, this should save both time and space...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:03 +02:00
Sergei Shtylyov 30881b9ac9 ide: call write_devctl() method from tf_read() method
Use write_devctl() method to clear/set the HOB bit in tf_read() method.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:02 +02:00
Sergei Shtylyov 4109d19af7 ide: move common code out of tf_load() method
Move device register masking (and setting drive->select) out of tf_load() method
and into the only function that needs to use this code, do_rw_taskfile()...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
[bart: fix whitespace error]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:02 +02:00
Sergei Shtylyov 745483f10c ide: simplify 'struct ide_taskfile'
Make 'struct ide_taskfile' cover only 8 register values and thus put two such
fields ('tf' and 'hob') into 'struct ide_cmd', dropping unnecessary 'tf_array'
field from it.

This required changing the prototype of ide_get_lba_addr() and ide_tf_dump().

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
[bart: fix setting of ATA_LBA bit for LBA48 commands in __ide_do_rw_disk()]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:02 +02:00
Sergei Shtylyov 60f85019c6 ide: replace IDE_TFLAG_* flags by IDE_VALID_*
Replace IDE_TFLAG_{IN|OUT}_* flags meaning to the taskfile register validity on
input/output by the IDE_VALID_* flags and introduce 4 symmetric 8-bit register
validity indicator subfields, 'valid.{input/output}.{tf|hob}', into the 'struct
ide_cmd' instead of using the 'tf_flags' field for that purpose (this field can
then be turned from 32-bit into 8-bit one).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:13:01 +02:00
Bartlomiej Zolnierkiewicz 674f0ea111 ide-cd: fix intendation in cdrom_decode_status()
Based on earlier work by Borislav Petkov.

Fix intendation in cdrom_decode_status(), no real code changes.

While at it:
- beautify comments

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:54 +02:00
Bartlomiej Zolnierkiewicz 1920c48d79 ide-cd: unify handling of fs and pc requests in cdrom_decode_status()
Based on earlier work by Borislav Petkov.

Unify handling of fs and pc requests in cdrom_decode_status().

While at it:
- remove unreachable code

The only change in functionality is that for pc requests more
detailed error message will be printed for following sense keys:
* ILLEGAL_REQUEST
* DATA_PROTECT
* MEDIUM_ERROR
* BLANK_CHECK

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:54 +02:00
Bartlomiej Zolnierkiewicz e01f251fd0 ide-cd: convert cdrom_decode_status() to use switch statements
Based on earlier work by Borislav Petkov.

Convert cdrom_decode_status() to use switch statements in
preparation to unify handling of fs and pc requests.

While at it:
- remove superfluous comments and do minor CodingStyle fixups

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:53 +02:00
Borislav Petkov 98036abf31 ide-cd: update debugging support
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
[bart: extracted from "ide-cd: cleanup cdrom_decode_status" patch]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:53 +02:00
Borislav Petkov dfa4411cc3 ide-cd: respect REQ_QUIET for fs requests in cdrom_decode_status()
There should be no functional change resulting from this patch.

Suggested-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:53 +02:00
Huang Weiyi 1597cd8250 ide: remove unused #include <linux/version.h>
Remove unused #include <linux/version.h> in drivers/ide/at91_ide.c.

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:53 +02:00
Atsushi Nemoto aa24d9783d tx4939ide: Fix tx4939ide_{in,out}put_data_swap argument
The commit adb1af9 ("ide: pass command instead of request to
ide_pio_datablock()") missed tx4939ide driver.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:52 +02:00
Atsushi Nemoto d68bab503e tx493[89]ide: Remove big endian version of tx493[89]ide_tf_{load,read}
Now tx493[89]ide_tf_{load,read} do not contain word I/O operations.
They are endian-free now.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>,
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:52 +02:00
Borislav Petkov 805ec58ad7 ide-cd: carve out an ide_cd_breathe()-helper for fs write requests
There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:52 +02:00
Borislav Petkov 8e59bfde31 ide-cd: move status checking into the IRQ handler
There should be no functional change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:51 +02:00
Sergei Shtylyov cfd30daa0d ide-h8300: remove custom tf_{read|load}() methods
Since tf_{read|load}() methods of this driver have now become identical to their
standard counterparts using I/O port accesses, there's no need to override those
anymore...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:51 +02:00
Sergei Shtylyov 7636e455ea at91_ide: remove custom tf_{read|load}() methods
Since tf_{read|load}() methods of this driver have now become identical to their
standard counterparts using MMIO accesses, there's no need to override those
anymore...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:51 +02:00
Sergei Shtylyov add4d9a983 ide-h8300: remove mm_{inw|outw}()
Remove two no longer used functions that I've overlooked...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:50 +02:00
Atsushi Nemoto 253275c52c tx4939ide: remove wmb()
* define CHECK_DMA_MASK
* remove use of wmb()

Reported-by: Grant Grundler <grundler@google.com>
Reviewed-by: Grant Grundler <grundler@google.com>
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
2009-04-08 14:12:49 +02:00
Grant Grundler edafcf73dc ide: remove wmb() from ide-dma-sff.c and scc_pata.c
This patch:
o replaces "mask" variable in ide_dma_end() with #define.
o removes use of wmb() in ide-dma-sff.c and scc_pata.c.
o is not tested - I don't have (or want) the HW.

Signed-off-by: Grant Grundler <grundler@google.com>
Cc: KOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:49 +02:00
Geert Uytterhoeven d18812070e ide: falconide/q40ide - Use __ide_mm_{in,out}sw() for data
Both of commits f94116aeec ("ide: cleanup
<asm-m68k/ide.h>") and 15a453a955 ("ide: include
<asm/ide.h> only when needed") break falconide:

| Uniform Multi-Platform E-IDE driver
| ide: Falcon IDE controller
| Probing IDE interface ide0...
| hda: Sarge m68k, ATA DISK drive
| ide0 at 0xfff00000 on irq 15 (serialized)
| ide-gd driver 1.18
| hda: max request size: 128KiB
| hda: 2118816 sectors (1084 MB) w/256KiB Cache, CHS=2102/16/63
|  hda:<4>hda: lost interrupt

This happens because falconide relies on {in,out}sw() being redefined in
<asm/ide.h>, as included by <linux/ide.h>, which is no longer the case.
Use __ide_mm_{in,out}sw() from <asm/ide.h> instead, just like
ide_{in,out}put_data() do.

The same problem seems to exist in q40ide.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:48 +02:00
Geert Uytterhoeven aa07573b2b ide: Fix host drivers that need IRQF_SHARED
commit 255115fb35 ("ide: allow host drivers to
specify IRQ flags") added irq_flags fields to struct ide_port_info and struct
ide_host.  Drivers can now set ide_port_info.irq_flags = IRQF_SHARED, while
init_irq() passes ide_host.irq_flags to request_irq().

Unfortunately ide_host.irq_flags is never set, causing (on ARAnyM):

| Uniform Multi-Platform E-IDE driver
| ide: Falcon IDE controller
| Probing IDE interface ide0...
| hda: Sarge m68k, ATA DISK drive
| init_irq: sa = 0
| ide0: disabled, unable to get IRQ 15
| ide0: failed to initialize IDE interface
| ide0: disabling port

Solve this by copying ide_port_info.irq_flags to ide_host.irq_flags in
ide_host_alloc().

This bug probably affects the following IDE host drivers:
  - buddha
  - delkin_cb
  - falconide
  - gayle
  - ide-cs
  - macide
  - q40ide
  - scc_pata
  - sgiioc4

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-04-08 14:12:47 +02:00
Yang Hongyang 284901a90a dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)
Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:11 -07:00
Borislav Petkov 5b6c942dd1 ide-floppy: do not complete rq's prematurely
... and access them afterwards. Simplify rq completing code while at it.

Spotted-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:34 +02:00
Gilles Espinasse d80c592c38 ide: be able to build pmac driver without IDE built-in
No reason to need IDE built-in to be able to compile pmac driver.

Tested to work on 2.6.29-rc8 and 2.6.28.8 with ide and pmac as modules
inside an initramfs.

Signed-off-by: Gilles Espinasse <g.esp@free.fr>
Cc: sam@ravnborg.org
Cc: benh@kernel.crashing.org
[bart: remove now superfluous IDE check]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:34 +02:00
TOMARI Hisanobu a9d5a97fa3 ide-pmac: IDE cable detection on Apple PowerBook
As IDE cable used on Apple PowerBook/iBook laptops are always of "Short 40"
type when the firmware says it's 80 conductor one, the cable detection should
return ATA_CBL_PATA40_SHORT on those machines.  This enables to automatically
use UDMA5 even with drives that doesn't correctly detect those cables on Apple
laptops.

Signed-off-by: TOMARI Hisanobu <posco.grubb@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: benh@kernel.crashing.org
[bart: beautify patch description]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:34 +02:00
Sergei Shtylyov fdd88f0af6 ide: inline SELECT_DRIVE()
Since SELECT_DRIVE() has boiled down to a mere dev_select() method call, it now
makes sense to just inline it...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:33 +02:00
Sergei Shtylyov abb596b25e ide: turn selectproc() method into dev_select() method (take 5)
Turn selectproc() method into dev_select() method by teaching it to write to the
device register and moving it from 'struct ide_port_ops' to 'struct ide_tp_ops'.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: benh@kernel.crashing.org
Cc: petkovbb@gmail.com
[bart: add ->dev_select to at91_ide.c and tx4939.c (__BIG_ENDIAN case)]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:32 +02:00
Sergei Shtylyov 35218d1ca8 ide: move data register access out of tf_{read|load}() methods (take 2)
Move IDE_FTFLAG_{IN|OUT}_DATA flag handling out of tf_{read|load}() methods
into the only two functions where these flags actually need to be handled:
do_rw_taskfile() and ide_complete_cmd()...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:31 +02:00
Sergei Shtylyov bac08cee93 ide: call {in|out}put_data() methods from tf_{read|load}() methods (take 2)
Handle IDE_FTFLAG_{IN|OUT}_DATA flags in tf_{read|load}() methods by calling
{in|out}put_data() methods to transfer 2 bytes -- this will allow us to move
that handling out of those methods altogether...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:31 +02:00
Sergei Shtylyov deae17fd5d ide-io-std: shorten ide_{in|out}put_data()
ide_{in|out|put_data() can be somewhat shortened by merging the paths doing
16-bit I/O...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:31 +02:00
Sergei Shtylyov 6762511934 ide: rename IDE_TFLAG_IN_[HOB_]FEATURE
The feature register has never been readable -- when its location is read, one
gets the error register value; hence rename IDE_TFLAG_IN_[HOB_]FEATURE into
IDE_TFLAG_IN_[HOB_]ERROR and introduce the 'hob_error' field into the 'struct
ide_taskfile' (despite the error register not really depending on the HOB bit).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:30 +02:00
Sergei Shtylyov ecf3a31d2a ide: turn set_irq() method into write_devctl() method
Turn set_irq() method with its software reset hack into write_devctl() method
(for just writing a value into the device control register) at last...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:30 +02:00
Sergei Shtylyov 4d74c3fcf2 ide: use ATA_HOB
Make use of ATA_HOB instead of hard-coded value in the tf_read() method.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:29 +02:00
Sergei Shtylyov 47ab834854 ide-disk: use ATA_ERR
Make use of ATA_ERR instead of hard-coded value in idedisk_set_max_address()
and idedisk_read_native_max_address().

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:29 +02:00
Sergei Shtylyov 74638c8482 ide: add support for CFA specified transfer modes (take 3)
Add support for the CompactFlash specific PIO modes 5/6 and MWDMA modes 3/4.

Since there were no PIO5 capable hard drives produced and one would also need
66 MHz IDE clock to actually get the difference WRT the address setup timings
programmed, I decided to simply replace the old non-standard PIO mode 5 timings
with the CFA specified ones.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: stf_xl@wp.pl
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:28 +02:00
Sergei Shtylyov c4199930b1 ide-iops: only clear DMA words on setting DMA mode
The bytes indicating current DMA mode in the identify data words 62, 63, and 88
should only change on setting a DMA mode, so stop clearing them  on setting PIO
mode in ide_config_drive_speed().  While at it, correct SW/MW DMA mode masks...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:27 +02:00
Sergei Shtylyov 8d64fcd935 ide: identify data word 53 bit 1 doesn't cover words 62 and 63 (take 3)
The IDE code assumed for years that the bit 1 of the identify data word 53 also
covers the validity of the SW/MW DMA information in words 62 and 63, but it has
always covered only words 64 thru 70, with words 62 and 63 being defined in the
original ATA spec, not in ATA-2...

This fix however should only concern *very* old hard disks and rather old CF
cards...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:27 +02:00
Sergei Shtylyov 985232e388 au1xxx-ide: auide_{in|out}sw() should be static
Make auide_{insw|outsw}() 'static' and mark them 'inline' as there's only one
call site for each: in the driver's {in|out}put_data() methods respectively...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:27 +02:00
Bartlomiej Zolnierkiewicz 349d12a1fe ide-floppy: use ide_pio_bytes()
* Fix ide_init_sg_cmd() setup for non-fs requests.

* Convert ide_pc_intr() to use ide_pio_bytes() for floppy media.

* Remove no longer needed ide_io_buffers() and sg/sg_cnt fields
  from struct ide_atapi_pc.

* Remove partial completions; kill idefloppy_update_buffers(), as a
  result.

* Add some more debugging statements.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:26 +02:00
Bartlomiej Zolnierkiewicz d93bc4521c ide-{floppy,tape}: fix padding for PIO transfers
* Return number of bytes left to transfer from idetape_{in,out}put_buffers()
  and number of bytes done from ide_tape_io_buffers().

* Fix padding for PIO transfers in ide_pc_intr() so read/write buffers are
  always completely processed and then the transfer is padded if necessary.

* Remove invalid error messages.

* Remove now superfluous padding from ide{_io_buffers,tape_input_buffers}().

While at it:

* Set pc->bh to NULL in idetape_input_buffers() after all bh-s are done.

* Cache !!(pc->flags & PC_FLAG_WRITING) in local variable in ide_pc_intr().

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:26 +02:00
Bartlomiej Zolnierkiewicz 9f5af4d667 ide: remove CONFIG_BLK_DEV_IDEDOUBLER config option
Nowadays it is not worth having a separate config option for
Amiga IDE Doubler support so always include it (it still needs
to be explicitly enabled by module parameter).

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:26 +02:00
Bartlomiej Zolnierkiewicz 41fa9f863b ide: decrease size of ->pc_buf field in struct ide_atapi_pc
struct ide_atapi_pc is often allocated on the stack and size of ->pc_buf
size is 256 bytes.  However since only ide_floppy_create_read_capacity_cmd()
and idetape_create_inquiry_cmd() require such size allocate buffers for
these pc-s explicitely and decrease ->pc_buf size to 64 bytes.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:25 +02:00
Bartlomiej Zolnierkiewicz b5479167f4 ide: fix locking in drive_release_dev()
* Request queue cleanup should happen before freeing drive->id
  and marking device as non-present.  Fix it.

* Remove superfluous hwif->lock acquiring/releasing.

Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:25 +02:00
Bartlomiej Zolnierkiewicz 4465461ece ide: merge ide_arm and ide_generic host drivers
There is no need for a separate ide_arm host driver nowadays
so merge it into ide_generic one.

While at it:
- return -EBUSY from ide_generic_init() if I/O resources are busy
- scale down ide_generic_check_pci_legacy_iobases() for CONFIG_PCI=n

Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Alexander Schulz <alex@shark-linux.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:24 +02:00
Bartlomiej Zolnierkiewicz 52913ab2c6 ide-generic: remove no longer needed sysfs interface
Nowadays we have "ide_generic.probe_mask=" module parameter
and ide_platform host driver so sysfs interface for adding
IDE interfaces is no longer needed.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:24 +02:00
Bartlomiej Zolnierkiewicz f094d4d83b ide: sanitize ide_build_sglist() and ide_destroy_dmatable()
* Move ide_map_sg() calls out from ide_build_sglist()
  to ide_dma_prepare().

* Pass command to ide_destroy_dmatable().

* Rename ide_build_sglist() to ide_dma_map_sg()
  and ide_destroy_dmatable() to ide_dma_unmap_sg().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:24 +02:00
Bartlomiej Zolnierkiewicz 88b4132e10 ide: set/clear drive->waiting_for_dma flag in the core code
Set/clear drive->waiting_for_dma flag in the core code
instead of in ->dma_setup and ->dma_end methods.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:22 +02:00
Bartlomiej Zolnierkiewicz 11998b3161 ide: move ide_map_sg() call out of ->dma_setup method (take 2)
Move ide_map_sg() call from ->dma_setup implementations and
ide_destroy_dmatable() one from *_build_dmatable() to ide_dma_prepare().

There should be no functional changes caused by this patch.

Sergei:
Removed 'use_pio_instead' labels and replaced 'goto' with 'return 0' --
that required no changes to the follow-up patches...

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:21 +02:00
Bartlomiej Zolnierkiewicz 8a4a5738ba ide: add ->dma_check method
* Add (an optional) ->dma_check method for checking if DMA can be
  used for a given command and fail DMA setup in ide_dma_prepare()
  if necessary.

* Convert alim15x3 and trm290 host drivers to use ->dma_check.

* Rename ali15x3_dma_setup() to ali_dma_check() while at it.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:21 +02:00
Bartlomiej Zolnierkiewicz 7526efaafd trm290: use custom ->dma_{start,end} to handle trm290_prepare_drive()
Use custom ->dma_{start,end} methods to handle trm290_prepare_drive()
there instead of in ->dma_setup method.

There should be no functional changes caused by this patch
(DMA support is disabled currently in trm290.c).

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:21 +02:00
Bartlomiej Zolnierkiewicz a6d67ffa7d ns87415: use custom ->dma_{start,end} to handle ns87415_prepare_drive()
Use custom ->dma_{start,end} methods to handle ns87415_prepare_drive()
there instead of in ->dma_setup method.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:20 +02:00
Bartlomiej Zolnierkiewicz 5ae5412d9a ide: add ide_dma_prepare() helper
* Add ide_dma_prepare() helper.

* Convert ide_issue_pc() and do_rw_taskfile() to use it.

* Make ide_build_sglist() static.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:20 +02:00
Bartlomiej Zolnierkiewicz 4453011f95 ide: destroy DMA mappings after ending DMA (v2)
Move ide_destroy_dmatable() call out from ->dma_end method to
{ide_pc,cdrom_newpc,ide_dma}_intr(), ide_dma_timeout_retry()
and sgiioc4_resetproc().

This causes minor/safe behavior changes w.r.t.:
* cmd64x.c::cmd64{8,x}_dma_end()
* cs5536.c::cs5536_dma_end()
* icside.c::icside_dma_end()
* it821x.c::it821x_dma_end()
* scc_pata.c::__scc_dma_end()
* sl82c105.c::sl82c105_dma_end()
* tx4939ide.c::tx4939ide_dma_end()

v2:
* Fix build for CONFIG_BLK_DEV_IDEDMA=n (reported by Randy Dunlap).

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:20 +02:00
Bartlomiej Zolnierkiewicz 1cee52de28 ide: inline ide_dma_timeout() into ide_dma_timeout_retry()
Since ide_dma_timeout() is only used by ide_dma_timeout_retry()
inline it there.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:19 +02:00
Bartlomiej Zolnierkiewicz 35c9b4daf4 ide: add ->dma_clear method and remove ->dma_timeout one
All custom ->dma_timeout implementations call the generic one thus it is
possible to have only an optional method for resetting DMA engine instead:

* Add ->dma_clear method and convert hpt366, pdc202xx_old and sl82c105
  host drivers to use it.

* Always use ide_dma_timeout() in ide_dma_timeout_retry() and remove
 ->dma_timeout method.

* Make ide_dma_timeout() static.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:19 +02:00
Bartlomiej Zolnierkiewicz e698ea83a8 ide-cd: minor ide_cdrom_setup() cleanup
Cache drive->queue in local variable and use max().

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:16 +02:00
Bartlomiej Zolnierkiewicz 14fa91ccba ide-cd: unify transfer padding in cdrom_newpc_intr()
* 'thislen' is always <= cmd->nleft for non-fs requests so the transfer
  padding inside the 'while (thislen > 0)' loop can happen only for fs
  requests -- then move it out of the loop and unify with the transfer
  padding for non-fs requests ('thislen' == 'len' for fs requests).

* blk_dump_rq_flags() dumps all request flags so it is enough to pass
  only the function name to it.

* Update my Copyrights while at it.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:16 +02:00
Bartlomiej Zolnierkiewicz 4a3d8cf48c ide-cd: use common completion path for DMA requests in cdrom_newpc_intr()
Use the following facts:

- rq->nr_sectors should now be always equal to (non-zero)
  rq->hard_nr_sectors for fs requests

- REQ_TYPE_ATA_PC requests have never bio attached to them

- rq->hard_nr_sectors == 0 for REQ_TYPE_ATA_PC requests

- DMA is used only for fs, pc and REQ_TYPE_ATA_PC requests

- 'uptodate' is ignored for pc requests ('rc == 0' case)

and use the common completion path also for DMA requests.

There should be no functional changes caused by this patch

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:15 +02:00
Bartlomiej Zolnierkiewicz c7ec89994f ide-cd: use scatterlists for PIO transfers (non-fs requests) (v2)
Convert ide-cd to use scatterlists for PIO transfers and get rid of
partial completions (except on error) also for non-fs requests.

v2:
Do not map dataless commands to an sg since it oopses on the virt_to_page()
translation check when DEBUG_VIRTUAL is enabled.  (from Borislav Petkov,
reported/bisected-by Tetsuo Handa).

Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:15 +02:00
Bartlomiej Zolnierkiewicz 8652b31ab2 ide-cd: merge ide_cd_prepare_rw_request() into cdrom_start_rw()
There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:14 +02:00
Bartlomiej Zolnierkiewicz 06a449e301 ide-cd: fix non-SECTOR_SIZE-multiples PIO transfers for fs requests
We now support arbitrary number of bytes per-IRQ also for fs requests
so remove ide_cd_check_transfer_size() and IDE_AFLAG_LIMIT_NFRAMES.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:13 +02:00
Bartlomiej Zolnierkiewicz a08915ba59 ide-cd: use scatterlists for PIO transfers (fs requests)
* Export ide_pio_bytes().

* Add ->last_xfer_len field to struct ide_cmd.

* Add ide_cd_error_cmd() helper to ide-cd.

* Convert ide-cd to use scatterlists also for PIO transfers (fs requests
  only for now) and get rid of partial completions (except when the error
  happens -- which is still subject to change later because looking at
  ATAPI spec it seems that the device is free to error the whole transfer
  with setting the Error bit only on the last transfer chunk).

* Update ide_cd_{prepare_rw,restore_request,do_request}() accordingly.

* Inline ide_cd_restore_request() into cdrom_start_rw().

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:13 +02:00
Bartlomiej Zolnierkiewicz 5ed57ad705 ide-cd: cleanup ide_cd_do_request()
There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:05 +02:00
Bartlomiej Zolnierkiewicz c4c69e21b5 ide-cd: kill whole failed request in ide_cd_do_request()
Untangling cdrom_end_request() uncovered an error in completing
failed requests in ide_cd_do_request().  Fix it.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:04 +02:00
Bartlomiej Zolnierkiewicz f63174e7a7 ide-cd: remove cdrom_end_request()
Inline cdrom_end_request() into cdrom_newpc_intr()
and ide_cd_do_request().

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:04 +02:00
Bartlomiej Zolnierkiewicz 8a11697485 ide-cd: unify cdrom_newpc_intr() exit paths
* Move cdrom_end_request() calls from cdrom_decode_status()
  and ide_cd_check_ireason() to cdrom_newpc_intr().

* Unify cdrom_newpc_intr() exit paths.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:03 +02:00
Bartlomiej Zolnierkiewicz 984c5e5974 ide-cd: move setting REQ_FAILED flag out from 'end_request' exit path
Move setting REQ_FAILED flag out from 'end_request' exit path in
cdrom_newpc_intr() and also rename 'end_request' to 'out_end'.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:03 +02:00
Bartlomiej Zolnierkiewicz e0458ccb06 ide-cd: unify ide_cd_do_request() exit paths
* Move cdrom_end_request() calls from cdrom_start_rw()
  and ide_cd_prepare_rw_request() to ide_cd_do_request().

* Unify ide_cd_do_request() exit paths.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:02 +02:00
Bartlomiej Zolnierkiewicz 299c4852fc ide-cd: factor out failed request completion from cdrom_end_request()
There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:01 +02:00
Bartlomiej Zolnierkiewicz 6041e8fba8 ide-cd: remove no longer needed 'ignore' module parameter
ide-scsi is gone...

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:01 +02:00
Bartlomiej Zolnierkiewicz 1ab6d74516 ide-cd: remove needless ide_dump_status_no_sense() wrapper
It makes no sense to check for BSY bit being set as earlier OK_STAT()
check in cdrom_end_request() makes sure that BSY bit is cleared.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:00 +02:00
Bartlomiej Zolnierkiewicz 13eae6a48f ide-cd: remove dead code from cdrom_decode_status()
There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:00 +02:00
Bartlomiej Zolnierkiewicz bf12a9c1c9 ide-cd: use ide_end_rq() also for failed non-fs requests
Use ide_end_rq() also for failed non-fs requests on completion
of REQUEST SENSE requests + use blk_rq_bytes() while at it.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:15:00 +02:00
Bartlomiej Zolnierkiewicz 116e690f4e ide-cd: remove dead URLs
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:14:59 +02:00
Bartlomiej Zolnierkiewicz f2bc316736 ide: use PageHighMem() instead of ifdefs in ide_pio_bytes()
Use PageHighMem() instead of ifdefs in ide_pio_bytes()
(=> local IRQs won't be disabled when not necessary).

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:14:59 +02:00
Bartlomiej Zolnierkiewicz 7a00798b1a ide: add support for arbitrary transfer lengths to ide_pio_bytes()
Add support for arbitrary transfer lengths to ide_pio_bytes()
and then inline ide_pio_multi() into ide_pio_datablock().

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:14:59 +02:00
Borislav Petkov 2eba082709 ide-atapi: start DMA after issuing a packet command
Apparently¹, some ATAPI devices want to see the packet command first
before enabling DMA otherwise they simply hang indefinitely. Reorder the
two steps and start DMA only after having issued the command first.

[1] http://marc.info/?l=linux-kernel&m=123835520317235&w=2

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Reported-by: Michael Roth <mroth@nessie.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:14:58 +02:00
Bartlomiej Zolnierkiewicz da19620d99 at91_ide: fix ->ftf_flags handling
Fix some incorrect IDE_FTFLAG_* changes which slipped in commit
"ide: add "flagged" taskfile flags to struct ide_taskfile (v2)"
(commit 19710d25d5) few days ago.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:14:57 +02:00
Geert Uytterhoeven 479edf0655 ide: drivers/ide/ide-atapi.c needs <linux/scatterlist.h>
On m68k:
| drivers/ide/ide-atapi.c: In function 'ide_io_buffers':
| drivers/ide/ide-atapi.c:87: error: implicit declaration of function 'sg_page'
| drivers/ide/ide-atapi.c:87: warning: passing argument 1 of 'PageHighMem' makes pointer from integer without a cast
| drivers/ide/ide-atapi.c:91: warning: passing argument 1 of 'kmap_atomic' makes pointer from integer without a cast
| drivers/ide/ide-atapi.c:96: error: implicit declaration of function 'sg_virt'
| drivers/ide/ide-atapi.c:96: warning: assignment makes pointer from integer without a cast
| drivers/ide/ide-atapi.c:107: error: implicit declaration of function 'sg_next'
| drivers/ide/ide-atapi.c:107: warning: assignment makes pointer from integer without a cast

[bart: Dmitri Vorobiev submitted similar patch fixing MIPS]

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Dmitri Vorobiev <dmitri.vorobiev@movial.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:14:57 +02:00
Elias Oltmanns 9010941c54 ide: Fix code dealing with sleeping devices in do_ide_request()
Unfortunately, I missed a catch when reviewing the patch committed as
201bffa4. Here is the fix to the currently broken handling of sleeping
devices. In particular, this is required to get the disk shock
protection code working again.

Reported-by: Christian Thaeter <ct@pipapo.org>
Cc: stable@kernel.org
Signed-off-by: Elias Oltmanns <eo@nebensachen.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-31 20:14:56 +02:00
Bartlomiej Zolnierkiewicz bf717c0a2e ide: keep track of number of bytes instead of sectors in struct ide_cmd
* Pass number of bytes instead of sectors to ide_init_sg_cmd().

* Pass number of bytes to process to ide_pio_sector() and rename
  it to ide_pio_bytes().

* Rename ->nsect field to ->nbytes in struct ide_cmd and use
  ->nbytes, ->nleft and ->cursg_ofs to keep track of number of
  bytes instead of sectors.

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:47 +01:00
Bartlomiej Zolnierkiewicz 35b5d0be3d ide: remove ide_execute_pkt_cmd() (v2)
* Pass command structure to ide_execute_command() and skip
  __ide_set_handler() for ATAPI protocols on non-DRQ devices.

* Convert ide_issue_pc() to always use ide_execute_command()
  and remove no longer needed ide_execute_pkt_cmd().

v2:
* Fix for non-DRQ devices (based on report from Borislav).

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:47 +01:00
Bartlomiej Zolnierkiewicz 22117d6eaa ide: add ->dma_timer_expiry method and remove ->dma_exec_cmd one (v2)
* Rename dma_timer_expiry() to ide_dma_sff_timer_expiry() and export it.

* Add ->dma_timer_expiry method and use it to set hwif->expiry for
  ATA_PROT_DMA protocol in do_rw_taskfile().

* Initialize ->dma_timer_expiry to ide_dma_sff_timer_expiry() for SFF hosts.

* Move setting hwif->expiry from ide_execute_command() to its users and drop
  'expiry' argument.

* Use ide_execute_command() instead of ->dma_exec_cmd in do_rw_taskfile().

* Remove ->dma_exec_cmd method and its implementations.

* Unexport ide_execute_command() and ide_dma_intr().

v2:
* Fix CONFIG_BLK_DEV_IDEDMA=n build (noticed by Randy Dunlap).

* Fix *dma_expiry naming (suggested by Sergei Shtylyov).

There should be no functional changes caused by this patch.

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:47 +01:00
Bartlomiej Zolnierkiewicz 60c0cd02b2 ide: set hwif->expiry prior to calling [__]ide_set_handler()
* Set hwif->expiry prior to calling [__]ide_set_handler()
  and drop 'expiry' argument.

* Set hwif->expiry to NULL in ide_{timer_expiry,intr}()
  and remove 'hwif->expiry = NULL' assignments.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:46 +01:00
Bartlomiej Zolnierkiewicz b788ee9c65 ide: use do_rw_taskfile() for ATA_CMD_PACKET commands
* Pass command to ide_issue_pc() and update ->do_request methods
  in ide-{cd,floppy,tape}.c accordingly.

* Convert ide_pktcmd_tf_load() to ide_init_packet_cmd() which
  just initializes command structure and use do_rw_taskfile()
  to load ATA_CMD_PACKET commands.

While at it:

* Rename ide{floppy,tape}_issue_pc() to ide_{floppy,tape}_issue_pc().

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:46 +01:00
Bartlomiej Zolnierkiewicz 2298169418 ide: pass command to ide_map_sg()
* Set IDE_TFLAG_WRITE flag and ->rq also for ATA_CMD_PACKET
  commands.

* Pass command to ->dma_setup method and update all its
  implementations accordingly.

* Pass command instead of request to ide_build_sglist(),
  *_build_dmatable() and ide_map_sg().

While at it:

* Fix scc_dma_setup() documentation + use ATA_DMA_WR define.

* Rename sgiioc4_build_dma_table() to sgiioc4_build_dmatable(),
  change return value type to 'int' and drop unused 'ddir'
  argument.

* Do some minor cleanups in [tx4939]ide_dma_setup().

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:46 +01:00
Bartlomiej Zolnierkiewicz 130e886708 ide: remove ide_end_request()
* Add ide_rq_bytes() helper.

* Add blk_noretry_request() quirk to ide_complete_rq() (currently only fs
  requests can be marked as "noretry" so there is no change in behavior).

* Switch current ide_end_request() users to use ide_complete_rq().

  [ No need to check for rq->nr_sectors == 0 in {ide_dma,task_pio}_intr(),
    nsectors == 0 in cdrom_end_request() and err == 0 in ide_do_devset(). ]

* Remove no longer needed ide_end_request().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:45 +01:00
Bartlomiej Zolnierkiewicz ba7d479c36 ide: use ide_end_rq() in ide_complete_rq()
This results in PIO->DMA retry being triggered also on completion
of requests using ide_complete_rq() instead of ide_end_request().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:44 +01:00
Bartlomiej Zolnierkiewicz f974b196f5 ide: pass number of bytes to complete to ide_complete_rq()
There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:44 +01:00
Bartlomiej Zolnierkiewicz a9587fd8c4 ide: remove BUG() from ide_complete_rq()
It is no longer needed so remove it, also while at it dequeue the request
only on blk_end_request() success and make ide_complete_rq() return an error
value.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:44 +01:00
Bartlomiej Zolnierkiewicz 89f78b3261 ide: move rq->errors quirk out from ide_end_request()
Move rq->errors quirk out from ide_end_request() to its call sites.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:43 +01:00
Bartlomiej Zolnierkiewicz 6902a53312 ide: pass error value to ide_complete_rq()
Set rq->errors at ide_complete_rq() call sites and then pass
error value to ide_complete_rq().

[ Some rq->errors assignments look really wrong but this patch
  leaves them alone to not introduce too many changes at once. ]

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:43 +01:00
Bartlomiej Zolnierkiewicz 37245aabfa ide: sanitize ide_end_rq()
* Move 'uptodate' quirk from ide_end_rq() to its users.

* Move quirks for blk_noretry_request() and !blk_fs_request()
  requests from ide_end_rq() to ide_end_request().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:43 +01:00
Bartlomiej Zolnierkiewicz 1caf236daf ide: add ide_end_rq() (v2)
* Move request dequeuing from __ide_end_request() to ide_end_request().

* Rename __ide_end_request() to ide_end_rq() and export it.

* Fix ide_end_rq() to pass original blk_end_request() return value.

* ide_end_dequeued_request() is used only in cdrom_end_request()
  so inline it there and then remove the function.

v2:
* Remove needless BUG_ON() while at it (start_request()'s one is enough).

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:42 +01:00
Bartlomiej Zolnierkiewicz 1713788ff8 ide: make ide_special_rq() BUG() on unknown requests
If unknown request reaches this function something is _seriously_ wrong.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:42 +01:00
Bartlomiej Zolnierkiewicz 2230d90dd8 ide: sanitize ide_finish_cmd()
* Move ide_end_request() call out from ide_finish_cmd() to its users.

* Use ide_finish_cmd() in task_no_data_intr().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:42 +01:00
Bartlomiej Zolnierkiewicz d364c7f50b ide: use ide_complete_cmd() for REQ_UNPARK_HEADS
* Fixup ->tf_flags in ide_do_park_unpark() to match their current use.

* Use ide_complete_cmd() for REQ_UNPARK_HEADS.

While at it:

* No need to read Error register for PM requests in task_no_data_intr().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:42 +01:00
Bartlomiej Zolnierkiewicz e7fedc3ca0 ide: use ide_complete_cmd() for head unload commands
Move handling of head unload commands from task_no_data_intr()
to ide_complete_cmd() and then use ide_complete_cmd() also for
head unload commands.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:41 +01:00
Bartlomiej Zolnierkiewicz 041cea10a8 ide: task_error() -> task_error_cmd()
* Move ide_error() call from task_error() to task_pio_intr()
  (the only user).

* Drop no longer used arguments from task_error().

* Rename task_error() to ide_error_cmd().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:41 +01:00
Bartlomiej Zolnierkiewicz 0a1248c5a7 ide: unify exit paths in task_pio_intr()
There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:41 +01:00
Bartlomiej Zolnierkiewicz 151055ed84 ide: inline task_in_unexpected() into task_pio_intr()
task_in_unexpected() is only used by task_pio_intr() so inline it there.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:39 +01:00
Bartlomiej Zolnierkiewicz 901bd08a54 ide: merge task_{in,out}_intr()
* Merge task_out_intr() with task_in_intr().

* Rename task_in_intr() to task_pio_intr().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:39 +01:00
Bartlomiej Zolnierkiewicz 0dfb991c69 ide: use ata_tf_protocols enums
* Add IDE_TFLAG_MULTI_PIO taskfile flag and set it for commands
  using multi-PIO protocol.

* Use ata_tf_protocols enums instead of TASKFILE_* defines to
  denote command's protocol and then rename ->data_phase field
  to ->protocol.

* Remove no longer needed <linux/hdreg.h> includes.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:39 +01:00
Bartlomiej Zolnierkiewicz 04d09b0e62 ide: set IDE_TFLAG_WRITE basing on data phase used in ide_taskfile_ioctl()
Also take care of fixing up incorrect TASKFILE_IN_DMA[Q] data phase when
IDE_DRIVE_TASK_RAW_WRITE is requested (no need to do it for TASKFILE_NO_DATA
and TASKFILE_[MULTI]_IN -- it had no chance of working previously).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:38 +01:00
Bartlomiej Zolnierkiewicz b6308ee0c5 ide: move command related fields from ide_hwif_t to struct ide_cmd
* Move command related fields from ide_hwif_t to struct ide_cmd.

* Make ide_init_sg_cmd() take command and sectors number as arguments.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:38 +01:00
Bartlomiej Zolnierkiewicz adb1af9803 ide: pass command instead of request to ide_pio_datablock()
* Add IDE_TFLAG_FS taskfile flag and set it for REQ_TYPE_FS requests.

* Convert ->{in,out}put_data methods to take command instead of request
  as an argument.  Then convert pre_task_out_intr(), task_end_request(),
  task_error(), task_in_unexpected(), ide_pio_sector(), ide_pio_multi()
  and ide_pio_datablock() in similar way.

* Rename task_end_request() to ide_finish_cmd().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:38 +01:00
Bartlomiej Zolnierkiewicz 22aa4b32a1 ide: remove ide_task_t typedef
While at it:
- rename struct ide_task_s to struct ide_cmd
- remove stale comments from idedisk_{read_native,set}_max_address()
- drop unused 'cmd' argument from ide_{cmd,task}_ioctl()
- drop unused 'task' argument from tx4939ide_tf_load_fixup()
- rename ide_complete_task() to ide_complete_cmd()
- use consistent naming for struct ide_cmd variables

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:37 +01:00
Bartlomiej Zolnierkiewicz e6830a86c2 ide: call ide_build_sglist() prior to ->dma_setup (v2)
* Re-map sg table if needed in ide_build_sglist().

* Move ide_build_sglist() call from ->dma_setup to its users.

* Un-export ide_build_sglist().

v2:
* Build fix for CONFIG_BLK_DEV_IDEDMA=n (noticed by Randy Dunlap).

There should be no functional changes caused by this patch.

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:37 +01:00
Bartlomiej Zolnierkiewicz b109f526ca ide: use blk_fs_request() check in ide-taskfile.c
Use blk_fs_request() in ide-taskfile.c instead of checking for:
- rq->bio in ide_pio_datablock() and task_error()
- rq->cmd_type == REQ_TYPE_ATA_TASKFILE in task_end_request()

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:37 +01:00
Bartlomiej Zolnierkiewicz 03a2faaea8 ide: return request status from ->pc_callback method
Make ->pc_callback method return request status and then move
the request completion from ->pc_callback to ide_pc_intr().

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:36 +01:00
Bartlomiej Zolnierkiewicz 3ee38302ff ide: remove ->end_request method
* Handle completion of private driver requests explicitly
  for ide_floppy and ide_tape media in ide_kill_rq().

* Remove no longer needed ->end_request method.

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:36 +01:00
Bartlomiej Zolnierkiewicz 313afea7f2 ide-{floppy,tape}: cleanup ide*_end_request()
* ide*_end_request() is only called with uptodate == 0 or uptodate == 1
  so cleanup it accordingly.

* Inline ide*_end_request() content at call sites so the only user left
  is ->end_request method.

* ->end_request is now used only for private driver requests so remove
  handling of other requests from ide*_end_request().

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:34 +01:00
Bartlomiej Zolnierkiewicz c152cc1a90 ide: use ->end_request only for private device driver requests
* Move IDE{FLOPPY,TAPE}_ERROR_* defines to <linux/ide.h> and rename them
  to IDE_DRV_ERROR_*.

* Handle ->end_request special cases for floppy/tape media in ide_kill_rq().

* Call ->end_request only for private device driver requests.

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:34 +01:00
Bartlomiej Zolnierkiewicz 5e2040fd0a ide: move ->failed_pc to ide_drive_t
Move ->failed_pc from struct ide_{disk,tape}_obj to ide_drive_t.

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:34 +01:00
Bartlomiej Zolnierkiewicz bfdb0b3beb ide-tape: remove superfluous tape->lock
tape->lock is not needed (->queue_lock protects queue).

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:33 +01:00
Bartlomiej Zolnierkiewicz cc495557df ide-floppy: remove superfluous check from ide_floppy_end_request()
There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:33 +01:00
Bartlomiej Zolnierkiewicz c7016e95a5 ide: remove no longer needed PC_FLAG_TIMEDOUT packet command flag
There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:33 +01:00
Bartlomiej Zolnierkiewicz e295b8d274 au1xxx-ide: auide_dma_end() cleanup
No need to check / clear hwif->sg_nents.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:33 +01:00
Bartlomiej Zolnierkiewicz e2bcb2acb0 trm290: trm290_dma_setup() fix
Re-map sg table if necessary (not that it really matters since
DMA support is disabled currently).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:32 +01:00
Bartlomiej Zolnierkiewicz f7ef12482b icside: icside_dma_setup() fixes
Check for ide_build_sglist() return value and re-map sg table if necessary.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:32 +01:00
Bartlomiej Zolnierkiewicz 39375853d7 ide: move smart_enable() call out from get_smart_data()
Move smart_enable() call out from get_smart_data() to
proc_idedisk_read_smart().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:32 +01:00
Bartlomiej Zolnierkiewicz e3d9a73a83 ide: remove ->data_phase field from ide_hwif_t
* Always use hwif->task->data_phase and remove ->data_phase
  field from ide_hwif_t.

* Remove superfluous REQ_TYPE_ATA_TASKFILE check from
  ide_pio_datablock() while at it.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:32 +01:00
Bartlomiej Zolnierkiewicz 5e76acd588 ide: no need to read Status and Error registers for "empty" taskfile requests
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:31 +01:00
Bartlomiej Zolnierkiewicz a09485df9c ide: move request type specific code from ide_end_drive_cmd() to callers (v3)
* Move request type specific code from ide_end_drive_cmd() to callers.

* Remove stale ide_end_drive_cmd() documentation and drop no longer
  used 'stat' argument.  Then rename the function to ide_complete_rq().

v2:
* Fix handling of blk_pm_request() requests in task_no_data_intr().

v3:
* Some ide_no_data_taskfile() users (HPA code and HDIO_DRIVE_* ioctls
  handlers) access original command later so we need to update it in
  ide_complete_task().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:31 +01:00
Bartlomiej Zolnierkiewicz e120237c0e ide: factor out completion of taskfile from ide_end_drive_cmd()
Factor out completion of taskfile from ide_end_drive_cmd()
to ide_complete_task().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:29 +01:00
Bartlomiej Zolnierkiewicz 3616b6536a ide: complete power step in ide_complete_pm_request()
* Complete power step in ide_complete_pm_request().

* Rename ide_complete_pm_request() to ide_complete_pm_rq().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:29 +01:00
Bartlomiej Zolnierkiewicz 19710d25d5 ide: add "flagged" taskfile flags to struct ide_taskfile (v2)
* Add ->ftf_flags field to struct ide_taskfile
  and convert flags for TASKFILE ioctl to use it.

* Rename "flagged" taskfile flags:
  - IDE_TFLAG_FLAGGED -> IDE_FTFLAG_FLAGGED
  - IDE_TFLAG_FLAGGED_SET_IN_FLAGS -> IDE_FTFLAG_SET_IN_FLAGS
  - IDE_TFLAG_{OUT,IN}_DATA -> IDE_FTFLAG_{OUT,IN}_DATA

v2:
* Remember to fully update ide-h8300.c, scc_pata.c and tx493{8,9}ide.c
  (thanks to Stephen Rothwell for noticing).

There should be no functional changes caused by this patch.

Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:28 +01:00
Bartlomiej Zolnierkiewicz c094ea0774 ide: add IDE_HFLAG_4DRIVES host flag
Add IDE_HFLAG_4DRIVES host flag and use it instead of ide_4drives
chipset type in ide_init_port().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:28 +01:00
Bartlomiej Zolnierkiewicz 2787cb8ae5 ide: add IDE_HFLAG_DTC2278 host flag
Add IDE_HFLAG_DTC2278 host flag and use it instead of ide_dtc2278
chipset type in ide_init_port().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:28 +01:00
Bartlomiej Zolnierkiewicz 0a6e49e9bc ide: remove now superfluous check from ide_host_register()
There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:27 +01:00
Bartlomiej Zolnierkiewicz 255115fb35 ide: allow host drivers to specify IRQ flags
* Add ->irq_flags field to struct ide_port_info and struct ide_host.

* Update host drivers and IDE PCI code to use ->irq_flags field.

* Convert init_irq() and ide_intr() to use host->irq_flags.

This fixes handling of shared IRQs for non-PCI hosts
and removes ugly ifdeffery from core IDE code.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:27 +01:00
Bartlomiej Zolnierkiewicz c7db966bbb ide: fix error message in pre_task_out_intr()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:27 +01:00
Bartlomiej Zolnierkiewicz 69197ad70e ide: fix memleak on failure in probe_for_drive()
Always free drive->id in probe_for_drive() if device is not present.

While at it:
- remove dead IDE_DFLAG_DEAD flag
- remove superfluous IDE_DFLAG_PRESENT check

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:26 +01:00
Bartlomiej Zolnierkiewicz 304ffd6d3a scc_pata: remove DECLARE_SCC_DEV() macro (v2)
v2:
scc_chipsets[] -> scc_chipset fix (spotted by Daniel K.).

Cc: "Daniel K." <daniel@cluded.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:26 +01:00
Bartlomiej Zolnierkiewicz 15a453a955 ide: include <asm/ide.h> only when needed
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:26 +01:00
Bartlomiej Zolnierkiewicz 443d18c807 at91_ide: use readsw()/writesw() directly
Use readsw()/writesw() directly intead of __ide_mm_{in,out}sw() macros.

Cc: Stanislaw Gruszka <stf_xl@wp.pl>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:24 +01:00
Borislav Petkov 3f2154d7e7 ide-cd: use ide_drive_t's rq in cdrom_queue_request_sense
There should be no functionality change resulting from this patch.

Suggested-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:24 +01:00
Kevin Hilman 13b8860d10 IDE: palm_bk3710: use ioremap instead of arch-specific IO_ADDRESS()
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
[bart: minor CodingStyle fixup per Sergei's suggestion]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:23 +01:00
Bartlomiej Zolnierkiewicz f94116aeec ide: cleanup <asm-m68k/ide.h>
* Remove superfluous <asm/macints.h> include.

* No need to re-define in/out*() macros as they are no longer used
  by m68k host drivers.

* readl() and writel() are not used by core IDE code.

* Use raw_*_swapw() directly in {falcon,q40}ide.c and remove
  {in,out}sw_swapw() macros.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:23 +01:00
Bartlomiej Zolnierkiewicz 09a3e79187 ide: make m68k host drivers use IDE_HFLAG_MMIO
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:23 +01:00
Bartlomiej Zolnierkiewicz e354c1d803 ide: remove IDE_ARCH_LOCK (v2)
* Add ->{get,release}_lock methods to struct ide_port_info
  and struct ide_host.

* Convert core IDE code, m68k IDE code and falconide support to use
  ->{get,release}_lock methods instead of ide_{get,release}_lock().

* Remove IDE_ARCH_LOCK.

v2:
* Build fix from Geert updating ide_{get,release}_lock() callers in
  falconide.c.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:22 +01:00
Bartlomiej Zolnierkiewicz d15a613ba0 ide: remove IDE_ARCH_INTR (v2)
This micro-optimization is not worth it.  Just always check for
existence of ->ack_intr method in ide_intr() and ide_timer_expiry().

v2:
Fix brown-paper-bag bug spotted by David D. Kilzer.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michael Schmitz <schmitz@debian.org>
Cc: "David D. Kilzer" <ddkilzer@kilzer.net>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:21 +01:00
Borislav Petkov 088b1b8860 ide: improve debugging scheme
and more specifically, push __func__ into debug
macro thus making ide_debug_log() calls shorter and more readable.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
2009-03-27 12:46:19 +01:00
Bartlomiej Zolnierkiewicz 70775e9c62 ide: move ->rqsize init from init_irq() to ide_init_port()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:18 +01:00
Bartlomiej Zolnierkiewicz 211176cceb macide: use struct ide_port_info
This fixes hwif->channel and drive->dn assignments.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:18 +01:00
Bartlomiej Zolnierkiewicz 0e78a54fbd buddha: use struct ide_port_info
This fixes hwif->channel and drive->dn assignments.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:18 +01:00
Bartlomiej Zolnierkiewicz ee1464a4e8 ide-pnp: use struct ide_port_info
This fixes hwif->channel and drive->dn assignments.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:18 +01:00
Bartlomiej Zolnierkiewicz e518e58779 ide-generic: use struct ide_port_info
This fixes hwif->channel and drive->dn assignments.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:17 +01:00
Bartlomiej Zolnierkiewicz 9804657ec4 ide_arm: use struct ide_port_info
This fixes hwif->channel and drive->dn assignments.

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:17 +01:00
Bartlomiej Zolnierkiewicz 33050ec7a2 icside: use struct ide_port_info also for PCB version 5 (v2)
This fixes hwif->channel and drive->dn assignments.

v2:
Fix v5/v6 mismatch noticed by Russell.

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-27 12:46:17 +01:00
Linus Torvalds 0c93ea4064 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (61 commits)
  Dynamic debug: fix pr_fmt() build error
  Dynamic debug: allow simple quoting of words
  dynamic debug: update docs
  dynamic debug: combine dprintk and dynamic printk
  sysfs: fix some bin_vm_ops errors
  kobject: don't block for each kobject_uevent
  sysfs: only allow one scheduled removal callback per kobj
  Driver core: Fix device_move() vs. dpm list ordering, v2
  Driver core: some cleanup on drivers/base/sys.c
  Driver core: implement uevent suppress in kobject
  vcs: hook sysfs devices into object lifetime instead of "binding"
  driver core: fix passing platform_data
  driver core: move platform_data into platform_device
  sysfs: don't block indefinitely for unmapped files.
  driver core: move knode_bus into private structure
  driver core: move knode_driver into private structure
  driver core: move klist_children into private structure
  driver core: create a private portion of struct device
  driver core: remove polling for driver_probe_done(v5)
  sysfs: reference sysfs_dirent from sysfs inodes
  ...

Fixed conflicts in drivers/sh/maple/maple.c manually
2009-03-26 11:17:04 -07:00
Ming Lei 7a192ec334 platform driver: fix incorrect use of 'platform_bus_type' with 'struct device_driver'
This patch fixes the bug reported in
	http://bugzilla.kernel.org/show_bug.cgi?id=11681.

"Lots of device drivers register a 'struct device_driver' with
the '.bus' member set to '&platform_bus_type'. This is wrong,
since the platform_bus functions expect the 'struct device_driver'
to be wrapped up in a 'struct platform_driver' which provides
some additional callbacks (like suspend_late, resume_early).
The effect may be that platform_suspend_late() uses bogus data
outside the device_driver struct as a pointer pointer to the
device driver's suspend_late() function or other hard to
reproduce failures."(Lothar Wassmann)

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24 16:38:25 -07:00
Bartlomiej Zolnierkiewicz 2ebe1d9efe ide: use try_to_identify() in ide_driveid_update()
* Pass pointer to buffer for IDENTIFY data to do_identify()
  and try_to_identify().

* Un-static try_to_identify() and use it in ide_driveid_update().

* Rename try_to_identify() to ide_dev_read_id().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:59 +01:00
Bartlomiej Zolnierkiewicz ff18b89bef ide: clear drive IRQ after re-enabling local IRQs in ide_driveid_update()
Clear drive IRQ after re-enabling local IRQs in ide_driveid_update()
to match try_to_identify().

Also remove superfluous local_irq_enable() call while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:58 +01:00
Bartlomiej Zolnierkiewicz f323b80dce ide: sanitize SELECT_MASK() usage in ide_driveid_update()
Call SELECT_MASK() after ide_fix_driveid().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:58 +01:00
Bartlomiej Zolnierkiewicz 1bd4c1f4fe ide: classify device type in do_probe()
Defer classifying device type from do_identify() to do_probe().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:58 +01:00
Bartlomiej Zolnierkiewicz 552d3a99bd ide: remove broken EXABYTENEST support
do_identify() marks EXABYTENEST device as non-present and frees
drive->id so enable_nest() has absolutely no chance of working.

The code was like this since at least 2.6.12-rc2 and nobody
has noticed so just remove broken EXABYTENEST support.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:58 +01:00
Bartlomiej Zolnierkiewicz 4cda15a099 ide: shorten timeout value in ide_driveid_update()
Shorten timeout value in ide_driveid_update() (30s -> 15s)
to match try_to_identify().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:57 +01:00
Bartlomiej Zolnierkiewicz 62bd0441a6 ide: propagate AltStatus workarounds to ide_driveid_update()
Propagate AltStatus workarounds from try_to_identify()
to ide_driveid_update().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:55 +01:00
Bartlomiej Zolnierkiewicz 2f40c9b0b6 ide: fix kmalloc() failure handling in ide_driveid_update()
* Doing kmalloc() in the middle of command execution is not only ugly
  but leaves drive waiting to send data on kmalloc() failure.  Fix it.

While at it:

* Unify error code paths.

* Fixup error message to be more useful and add missing KERN_ERR level.

* Rename 'stat' variable to 's'.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:54 +01:00
Bartlomiej Zolnierkiewicz 86ccf37c6a ide: remove pciirq argument from ide_pci_setup_ports()
* Set ->irq explicitly in cs5520.c.

* Remove irq argument from ide_hw_configure().

* Remove pciirq argument from ide_pci_setup_ports().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:53 +01:00
Bartlomiej Zolnierkiewicz 2ed0ef543a ide: fix ->init_chipset method to return 'int' value
* Return 0 instead of dev->irq in ->init_chipset implementations.

* Fix ->init_chipset method to return 'int' value instead of
  'unsigned int' one.

This fixes ->init_chipset handling for host drivers (cs5530, hpt366
and pdc202xx_new) for which it is possible for this method to fail.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:53 +01:00
Bartlomiej Zolnierkiewicz a182807a89 ide: remove try_to_identify() wrapper
There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:53 +01:00
Bartlomiej Zolnierkiewicz f77e03c68f ide: remove no longer needed IRQ auto-probing from try_to_identify() (v2)
v2:
Update actual_try_to_identify() documentation.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:53 +01:00
Bartlomiej Zolnierkiewicz 8b07ed26f8 ide: remove no longer needed IRQ fallback code from hwif_init()
Then remove no longer used __ide_default_irq().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:52 +01:00
Bartlomiej Zolnierkiewicz bd0c08470f amd74xx: remove no longer needed ->init_hwif method
This is now handled by core IDE PCI code.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:52 +01:00
Bartlomiej Zolnierkiewicz 2467922a56 ide: remove no longer needed IDE_HFLAG[_FORCE]_LEGACY_IRQS
There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:52 +01:00
Bartlomiej Zolnierkiewicz f65dedfd7b ide: use ide_pci_is_in_compatibility_mode() in ide_pci_init_{one,two}()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:51 +01:00
Bartlomiej Zolnierkiewicz 5bae8bf450 ide: use pci_get_legacy_ide_irq() in ide_pci_init_{one,two}()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:49 +01:00
Bartlomiej Zolnierkiewicz 80d15a607a ide: handle IDE_HFLAG[_FORCE]_LEGACY_IRQS in ide_pci_init_{one,two}()
Move handling of IDE_HFLAG[_FORCE]_LEGACY_IRQS from ide_init_port()
to ide_pci_init_{one,two}().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:49 +01:00
Bartlomiej Zolnierkiewicz 1b166ae7bb trm290: small ->init_hwif cleanup
Core IDE PCI code takes care of assigning hwif->irq for both ports.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:49 +01:00
Bartlomiej Zolnierkiewicz 49727e3d20 ns87415: small ->init_hwif cleanup
Core IDE PCI code takes care of assigning hwif->irq for both ports.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:49 +01:00
Bartlomiej Zolnierkiewicz 973d9e7439 ns87415: use pci_get_legacy_ide_irq()
Fix ->init_hwif to use pci_get_legacy_ide_irq() instead of
__ide_default_irq().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:48 +01:00
Bartlomiej Zolnierkiewicz 213e4b0a34 amd74xx: use ide_pci_is_in_compatibility_mode()
Fix ->init_hwif to check if IDE PCI controller is in compatibility
mode instead of checking for hwif->irq == 0.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:48 +01:00
Bartlomiej Zolnierkiewicz 327fa1c294 ide: move error handling code to ide-eh.c (v2)
Do some CodingStyle fixups in <linux/ide.h> while at it.

v2:
Add missing <linux/delay.h> include (reported by Stephen Rothwell).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:47 +01:00
Bartlomiej Zolnierkiewicz 122f06f8bc ide: checkpatch.pl fixes for ide-iops.c
Fix following checkpatch.pl warnings/errors:
- WARNING: space prohibited between function name and open parenthesis '('
- WARNING: EXPORT_SYMBOL(foo); should immediately follow its function/variable
- WARNING: line over 80 characters
- ERROR: trailing whitespace
- ERROR: space required before the open parenthesis '('

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:47 +01:00
Bartlomiej Zolnierkiewicz ee1b1cc974 ide: fix comments in ide_config_drive_speed()
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:47 +01:00
Bartlomiej Zolnierkiewicz 4d7bb471ce ide: fix printk() levels in [atapi_]reset_pollfunc()
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:47 +01:00
Bartlomiej Zolnierkiewicz 1574cf6cb4 ide: move standard I/O code to ide-io-std.c
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:46 +01:00
Bartlomiej Zolnierkiewicz 0d6a9754c0 ide: move ide_read_bcount_and_ireason() to ide-atapi.c
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:46 +01:00
Bartlomiej Zolnierkiewicz 7eeaaaa522 ide: move xfer mode tuning code to ide-xfer-mode.c
* Move xfer mode tuning code to ide-xfer-mode.c.

* Add CONFIG_IDE_XFER_MODE config option to be selected by host drivers
  that support xfer mode tuning.

* Add CONFIG_IDE_XFER_MODE=n static inline versions of ide_set_pio()
  and ide_set_xfer_rate().

* Make IDE_TIMINGS and BLK_DEV_IDEDMA config options select IDE_XFER_MODE,
  also add explicit selects for few host drivers that need it.

* Build/link ide-xfer-mode.o and ide-pio-blacklist.o (it is needed only
  by ide-xfer-mode.o) only if CONFIG_IDE_XFER_MODE=y.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:46 +01:00
Bartlomiej Zolnierkiewicz 11938c9290 ide: move device settings code to ide-devsets.c
Remove stale comment from ide.c while at it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:44 +01:00
Bartlomiej Zolnierkiewicz c4e66c36cc ide: move ide_do_park_unpark() to ide-park.c
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:44 +01:00
Bartlomiej Zolnierkiewicz 1bc6daae4a ide: factor out processing of special commands from ide_special_rq()
Factor out processing of special commands from ide_special_rq()
to ide_do_devset() and ide_do_park_unpark().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:44 +01:00
Bartlomiej Zolnierkiewicz 1866082339 ide: remove ide_do_drive_cmd()
* Use elv_add_request() instead of __elv_add_request() in ide_do_drive_cmd().

* ide_do_drive_cmd() is used only in ide-{atapi,cd}.c so inline it there.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:44 +01:00
Bartlomiej Zolnierkiewicz 65ca537732 ide: move ide_dma_timeout_retry() to ide-dma.c
Move ide_dma_timeout_retry() to ide-dma.c and add static inline
version for CONFIG_BLK_DEV_IDEDMA=n.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:43 +01:00
Bartlomiej Zolnierkiewicz b6a45a0b1e ide: move drive_is_ready() to ide-io.c
Move drive_is_ready() to ide-io.c, then make it static.

Also make some minor CodingStyle fixups while at it.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:43 +01:00
Bartlomiej Zolnierkiewicz 75a0cff4e8 ide: unexport ide_devset_execute()
There are no modular ide_devset_execute() users left so unexport it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:43 +01:00
Bartlomiej Zolnierkiewicz 2b9ae4608f ide: remove stale comments from drive_is_ready()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:42 +01:00
Bartlomiej Zolnierkiewicz b0b391430b ide-acpi: remove taskfile_load_raw()
* taskfile_load_raw() is used only by do_drive_set_taskfiles()
  so inline it there.

While at it:
- rename 'args' variable to 'task'
- remove struct taskfile_array
- do ide_acpigtf check early
- use REGS_PER_GTF

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:42 +01:00
Bartlomiej Zolnierkiewicz 1f5892a5d2 ide-acpi: cleanup do_drive_set_taskfiles()
* ide_noacpi is already checked by ide_acpi_exec_tfs()
  which is the only user of do_drive_set_taskfiles().

* ide_acpi_exec_tfs() prints sufficient debug info about the
  device so no need to do it again.

* do_drive_get_GTF() + ide_acpi_exec_tfs() make sure that this
  function will never be called with incorrect gtf_length argument
  or if device is not present.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:42 +01:00
Bartlomiej Zolnierkiewicz 2f0d0fd2a6 ide-acpi: cleanup do_drive_get_GTF()
* ide_noacpi is already checked by ide_acpi_exec_tfs()
  which is the only user of do_drive_get_GTF().

* ide_acpi_exec_tfs() prints sufficient debug info about the
  device so no need to have excessive data about port/host.

* It is sufficient to check for drive->acpidata->obj_handle
  as it will be NULL if dev == NULL or hwif->acpidata == NULL
  or device is not present.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:42 +01:00
Bartlomiej Zolnierkiewicz 8b803bd184 ide: sanitize ACPI initialization
* ide_acpi_init() -> ide_acpi_init_port()

* ide_acpi_blacklist() -> ide_acpi_init()

* Call ide_acpi_init() only once (do it during IDE core
  initialization) and cleanup the function accordingly.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:41 +01:00
Bartlomiej Zolnierkiewicz 7ed5b157d9 ide: add ide_for_each_present_dev() iterator
* Add ide_for_each_present_dev() iterator and convert IDE code to use it.

* Do some drive-by CodingStyle fixups in ide-acpi.c while at it.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:41 +01:00
Bartlomiej Zolnierkiewicz 8cd3c60562 ide-acpi: init ACPI handles early for devices
Init ACPI handles for devices in ide_acpi_port_init_devices()
and remove no longer needed ide_acpi_drive_get_handle().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:41 +01:00
Bartlomiej Zolnierkiewicz 94635d3ecf ide-acpi: no need to zero ->acpidata for devices
ide_acpi_init() takes care of it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:41 +01:00
Bartlomiej Zolnierkiewicz 1902a253e4 ide: remove superfluous check from ide_proc_port_register_devices()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:40 +01:00
Bartlomiej Zolnierkiewicz 0688d3a6ba ide: init_irq() doesn't need to hold ide_cfg_mtx
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:39 +01:00
Bartlomiej Zolnierkiewicz 7362951b48 ide: move ->lock and ->timer init from init_irq() to ide_init_port_data()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:39 +01:00
Bartlomiej Zolnierkiewicz d336ae3cf5 ide: no need to touch local IRQs in ide_probe_port()
Remove superfluous

	local_save_flags()
	local_irq_enable_in_hardirq()

	...

	local_irq_restore()

combo.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-03-24 23:22:39 +01:00