Commit graph

117 commits

Author SHA1 Message Date
Christoph Hellwig
9227c33de8 [PATCH] move ->eh_strategy_handler to the transport class
Overriding the whole EH code is a per-transport, not per-host thing.
Move ->eh_strategy_handler to the transport class, same as
->eh_timed_out.

Downside is that scsi_host_alloc can't check for the total lack of EH
anymore, but the transition period from old EH where we needed it is
long gone already.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-04-10 14:15:47 -04:00
Tejun Heo
8e0e694a3a [PATCH] libata: make ata_qc_issue complete failed qcs
There is no reason for the issuer to diddle with a failed qc as the
issuer has complete control over when a qc gets freed (usually in
->complete_fn).  Make ata_qc_issue() responsible for completing qcs
which failed to issue.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-31 10:14:42 -05:00
Brian King
2af10a818d [PATCH] libata: ata_scsi_ioctl cleanup
In preparation for SAS, kill some unnecessary code in ata_scsi_ioctl
to find the ATA port and device given the scsi_device. Neither local
is used in the function.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 10:18:43 -05:00
Brian King
eb3f0f9c6c [PATCH] libata: ata_scsi_queuecmd cleanup
Encapsulate part of ata_scsi_queuecmd so that it can be
reused by future SAS patches.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 10:18:43 -05:00
Jeff Garzik
2e9edbf815 [libata] export ata_dev_pair; trim trailing whitespace
Mostly, trim trailing whitespace.

Also:
* export ata_dev_pair
* move ata_dev_classify export closer to ata_dev_pair export
2006-03-24 09:56:57 -05:00
Nigel Cunningham
082776e4be [PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE.
At the moment libata doesn't pass pm_message_t down ata_device_suspend.
This causes drives to be powered down when we just want a freeze,
causing unnecessary wear and tear. This patch gets pm_message_t passed
down so that it can be used to determine whether to power down the
drive.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 drivers/scsi/libata-core.c |    5 +++--
 drivers/scsi/libata-scsi.c |    4 ++--
 drivers/scsi/scsi_sysfs.c  |    2 +-
 include/linux/libata.h     |    4 ++--
 include/scsi/scsi_host.h   |    2 +-
 5 files changed, 9 insertions(+), 8 deletions(-)
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-24 09:51:36 -05:00
Jeff Garzik
f01c184569 Merge branch 'master' 2006-03-22 19:13:54 -05:00
Alan Cox
2d2020242d [PATCH] libata: pick a less confusion "um dunno" error
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 21:21:32 -05:00
Brian King
a6cce2a79d [PATCH] libata: ata_scsi_slave_config cleanup
Encapsulate some of ata_scsi_slave_config so that parts
can be reused in future SAS patches.

Signed-off-by: Brian King <brking@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 21:03:43 -05:00
Albert Lee
f59b0cf8a3 [PATCH] libata-dev: Remove ATA_PROT_PIO_MULT
Remove the ATA_PROT_PIO_MULT protocol.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 20:39:46 -05:00
Jeff Garzik
b142eb6594 [libata] SCSI VPD page 0x83 fixes
Original patch (and description) by Douglas Gilbert, with minor fixes
and API updates from me.

Changelog:
  - make existing libata VPD device identification page (0x83)
    supply the ATA serial number in the libata "vendor
    specific" designator (from Chris Paulson-Ellis)
  - add a "t10 vendor id based" designator as defined in
    SAT rev 08 (section 10.3.4.2.3) that supplies ATA
    model and serial numbers
  - make the libata VPD page 0x83 more extensible (for
    adding more designators in the future).
  - rename EVPD to VPD in various places. Enable Vital
    Product Data (EVPD) is a bit in the INQUIRY cdb.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-21 20:37:47 -05:00
Tejun Heo
30afc84cf7 [SCSI] libata: implement minimal transport template for ->eh_timed_out
SCSI midlayer has moved hostt->eh_timed_out to transport template.  As
libata doesn't need full-blown transport support yet, implement
minimal transport for libata.  No transport class or whatsoever, just
empty transport template with ->eh_timed_out hook.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2006-03-21 13:07:05 -06:00
Tejun Heo
86e45b6bd6 [PATCH] libata: implement port_task
Implement port_task.  LLDD's can schedule a function to be executed
with context after specified delay.  libata core takes care of
synchronization against EH.  This is generalized form of pio_task and
packet_task which are tied to PIO hsm implementation.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2006-03-11 17:57:20 -05:00
Jeff Garzik
d2dbaad855 Merge branch 'master' 2006-03-01 14:45:47 -05:00
Jeff Garzik
c3c013a2c2 [libata] Disable FUA
Until problems are sorted.
2006-02-27 22:31:19 -05:00
Tejun Heo
6a62a04d47 [PATCH] libata: rename ata_dev_id_[c_]string()
This patch renames ata_dev_id_[c_]string() to ata_id_[c_]string().
All other functions which read data from ATA ID data start with ata_id
and those two function names were getting too long.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-20 04:54:22 -05:00
Tejun Heo
b00eec1d58 [PATCH] libata: add per-device max_sectors
If a low level driver wants to control max_sectors, it had to adjust
ap->host->max_sectors and set ATA_DFLAG_LOCK_SECTORS to tell
ata_scsi_slave_config not to override the limit.  This is not only
cumbersome but also incorrect for hosts which support more than one
devices per port.

This patch adds per-device ->max_sectors.  If the field is unset
(zero), libata core layer will adjust ->max_sectors according to
default rules.  If the field is set, libata honors the setting.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-12 14:36:30 -05:00
Tejun Heo
6e7846e9c5 [PATCH] libata: move cdb_len for host to device
cdb_len is per-device property.  Sharing cdb_len on ap results in
inaccurate configuration on revalidation and hotplugging.  This patch
makes cdb_len per-device.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-12 14:29:10 -05:00
Tejun Heo
2e02671daa [PATCH] libata: use ata_dev_id_c_string()
Use ata_dev_id_c_string()

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-12 14:24:41 -05:00
Tejun Heo
a46314744d [PATCH] libata: convert assert(X)'s in libata core layer to WARN_ON(!X)'s
In an effort to kill libata-specific assert() and use generic
WARN_ON(), this patch converts all assert(X)'s in libata core layer to
WARN_ON(!X)'s.  Most conversions are straight-forward logical negation
exception for the followings.

* In libata-core.c:ata_fill_sg(),
  assert(qc->n_elem > 0) is converted to WARN_ON(qc->n_elem == 0) because
  qc->n_elem is unsigned and unsigned <= 0 is weird.

* In libata-scsi.c:ata_gen_ata_desc/fixed_sense(),
  assert(NULL != qc->ap->ops->tf_read) is converted to
  WARN_ON(qc->ap->ops->tf_read == NULL), as there are no other users of
  'constant cond var' style in libata.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-11 17:51:57 -05:00
Tejun Heo
f637902015 [PATCH] libata: kill NULL qc handling from ->eng_timeout callbacks
->eng_timeout cannot be invoked with NULL qc anymore.  Add an
assertion in ata_scsi_error() and kill NULL qc handling from all
->eng_timeout callbacks.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-10 06:50:47 -05:00
Tejun Heo
f29841e08f [PATCH] libata: implement ata_scsi_timed_out()
Implement ata_scsi_timed_out(), to be used as
scsi_host_template->eh_timed_out callback for all libata drivers.
Without this function, the following race exists.

If a qc completes after SCSI timer expires but before libata EH kicks
in, the qc gets completed but the scsicmd still gets passed to libata
EH resulting in ->eng_timeout invocation with NULL qc, which none is
handling properly.

This patch makes sure that scmd and qc share the same lifetime.
Original idea from Jeff Garzik <jgarzik@pobox.com>.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-10 06:50:46 -05:00
Tejun Heo
341963b909 [PATCH] libata: add ATA_QCFLAG_EH_SCHEDULED
Add ATA_QCFLAG_EH_SCHEDULED.  If this flag is set, the qc is owned by
EH and normal completion path is not allowed to finish it.  This patch
doesn't actually use this flag.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-10 06:50:45 -05:00
Jeff Garzik
5140788f77 [libata scsi] build fix for ATA_FLAG_IN_EH change 2006-02-09 01:56:05 -05:00
Tejun Heo
dde44589bf [PATCH] libata: implement ATA_FLAG_IN_EH port flag
ATA_FLAG_IN_EH flag is set on entry to EH and cleared on completion.
This patch just sets and clears the flag.  Following patches will
build normal qc execution / EH synchronization aroung this flag.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-02-09 01:18:37 -05:00
Jeff Garzik
18ee361004 Merge branch 'master' 2006-02-02 01:12:54 -05:00
Jens Axboe
48bdc8ec4a [LIBATA] Blacklist certain Maxtor firmware revisions for FUA support
It looks like they are either discarding or corrupting data when the FUA
command is used, bad.

Signed-off-by: Jens Axboe <axboe@suse.de>
2006-01-30 16:09:35 +01:00
Randy Dunlap
c893a3ae49 Various libata documentation updates.
This is a merger of libata docs + cleanups from
Martin Waitz <tali@admingilde.org> and me.

From: Randy Dunlap <rdunlap@xenotime.net>
From: Martin Waitz <tali@admingilde.org>

Fix libata kernel-doc comments to match code.
Add some function parameters to kernel-doc.
Fix some typos/spellos.
Put comments in <= 80 columns.
Make one DPRINTK string unique.
Fix sparse cast warnings.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-28 13:15:32 -05:00
Tejun Heo
a72ec4ce6d [PATCH] libata: implement and apply ata_eh_qc_complete/retry()
Implement ata_eh_qc_complete/retry() using scsi_eh_finish_cmd() and
scsi_eh_flush_done_q().  This removes all eh scsicmd finish hacks from
low level drivers.

This change was first suggested by Jeff Garzik.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-26 22:36:28 -05:00
Tejun Heo
9a3d9eb017 [PATCH] libata: return AC_ERR_* from issue functions
Return AC_ERR_* mask from issue fuctions instead of 0/-1.  This
enables things like failing a qc with AC_ERR_HSM when the device
doesn't set DRDY when the qc is about to be issued.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-26 22:36:27 -05:00
Tejun Heo
8e436af932 [PATCH] libata: fix ata_qc_issue() error handling
When ata_qc_issue() fails, the qc might have been dma mapped or not.
So, performing only ata_qc_free() results in dma map leak.  This patch
makes ata_qc_issue() mark dma map flags correctly on failure and calls
ata_qc_complete() after ata_qc_issue() fails.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-26 22:33:50 -05:00
Tejun Heo
77853bf2b4 [PATCH] libata: make the owner of a qc responsible for freeing it
qc used to be freed automatically on command completion.  However, as
a qc can carry information about its completion status, it can be
useful to its owner/issuer after command completion.  This patch makes
freeing qc responsibility of its owner.  This simplifies
ata_exec_internal() and makes command turn-around for atapi request
sensing less hackish.

This change was originally suggested by Jeff Garzik.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2006-01-26 22:33:49 -05:00
Jeff Garzik
0825788ff2 Merge branch 'upstream' 2006-01-17 10:26:28 -05:00
Linus Torvalds
d99cf9d679 Merge branch 'post-2.6.15' of git://brick.kernel.dk/data/git/linux-2.6-block
Manual fixup for merge with Jens' "Suspend support for libata", commit
ID 9b84754866.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 09:01:25 -08:00
Jens Axboe
9b84754866 [PATCH] Suspend support for libata
This patch adds suspend patch to libata, and ata_piix in particular. For
most low level drivers, they should just need to add the 4 hooks to
work. As I can only test ata_piix, I didn't enable it for more
though.

Suspend support is the single most important feature on a notebook, and
most new notebooks have sata drives. It's quite embarrassing that we
_still_ do not support this. Right now, it's perfectly possible to
suspend the drive in mid-transfer.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-06 08:36:09 -08:00
Tejun Heo
9a3dccc425 [BLOCK] add FUA support to libata
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
2006-01-06 09:56:18 +01:00
Jeff Garzik
02f693c711 Merge branch 'upstream' 2006-01-03 10:59:55 -05:00
Jeff Garzik
a18ceba7b4 Merge branch 'master' 2006-01-03 10:58:53 -05:00
Tony Battersby
fd71da468d [PATCH] fix libata inquiry VPD for ATAPI devices
The following patch prevents libata from incorrectly modifying inquiry
VPD pages and command support data from ATAPI devices.  I have tested
the patch with a SATA ATAPI tape drive on an AHCI controller.

Patch is against kernel 2.4.32 with 2.4.32-libata1.patch applied.

Anthony J. Battersby
Cybernetics

Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-24 10:02:24 -05:00
Jeff Garzik
e7fb585940 Merge branch 'upstream' 2005-12-13 22:22:41 -05:00
Jeff Garzik
e508a391a0 Merge branch 'upstream-fixes' 2005-12-13 02:30:04 -05:00
Jeff Garzik
50630195bb [libata] mark certain hardware (or drivers) with a no-atapi flag
Some hardware does not support the PACKET command at all.
Other hardware supports ATAPI, but the driver does something nasty such
as calling BUG() when an ATAPI command is issued.

For these such cases, we mark them with a new flag, ATA_FLAG_NO_ATAPI.

Initial version contributed by Ben Collins.
2005-12-13 02:29:45 -05:00
Jeff Garzik
80c7af4074 Merge branch 'upstream' 2005-12-13 01:46:20 -05:00
Albert Lee
a22e2eb071 [PATCH] libata: move err_mask to ata_queued_cmd
- remove err_mask from the parameter list of the complete functions
  - move err_mask to ata_queued_cmd
  - initialize qc->err_mask when needed
  - for each function call to ata_qc_complete(), replace the err_mask parameter with qc->err_mask.

Signed-off-by: Albert Lee <albertcc@tw.ibm.com>

===============
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-06 04:49:22 -05:00
Jeff Garzik
451ec6ab31 Merge branch 'master' 2005-12-06 04:14:13 -05:00
Jeff Garzik
4ef679e6ca Merge branch 'upstream-fixes' 2005-12-03 20:34:14 -05:00
Tejun Heo
9a40525788 [PATCH] libata: fix ata_scsi_pass_thru error handling
This patch makes ata_scsi_pass_thru() properly set result code and
sense data on translation failures.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-03 20:31:16 -05:00
Arjan van de Ven
98ac62defe [PATCH] mark several libata datastructures const
Hi,

the patch below marks several libata (and libata-driver) structures
const so that they end up in the .rodata segment and don't false-share
cachelines with things that get dirtied often.

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
2005-12-01 02:29:35 -05:00
Jeff Garzik
85a07029aa Merge branch 'upstream' 2005-11-18 11:42:40 -05:00
Jeff Garzik
c6e6e666cb [libata] REQUEST SENSE handling fixes
- Move ATAPI check-condition handling out of the timeout handler
- Use multi-qc-issue feature to issue REQUEST SENSE ATAPI PACKET
  command upon receiving an ATAPI check-condition.

This cleans things up a lot, and eliminates a nasty recursion bug.
2005-11-14 14:50:05 -05:00