linux-toradex.git/include/linux/libata.h, branch v2.6.33.1

libata: retry link resume if necessary

2010-01-12T19:34:14+00:00

Interestingly, when SIDPR is used in ata_piix, writes to DET in
SControl sometimes get ignored leading to detection failure.  Update
sata_link_resume() such that it reads back SControl after clearing DET
and retry if it's not clear.

Signed-off-by: Tejun Heo 
Reported-by: fengxiangjun 
Reported-by: Jim Faulkner 
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

2009-12-10T03:42:25+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (222 commits)
  [SCSI] zfcp: Remove flag ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP
  [SCSI] zfcp: Activate fc4s attributes for zfcp in FC transport class
  [SCSI] zfcp: Block scsi_eh thread for rport state BLOCKED
  [SCSI] zfcp: Update FSF error reporting
  [SCSI] zfcp: Improve ELS ADISC handling
  [SCSI] zfcp: Simplify handling of ct and els requests
  [SCSI] zfcp: Remove ZFCP_DID_MASK
  [SCSI] zfcp: Move WKA port to zfcp FC code
  [SCSI] zfcp: Use common code definitions for FC CT structs
  [SCSI] zfcp: Use common code definitions for FC ELS structs
  [SCSI] zfcp: Update FCP protocol related code
  [SCSI] zfcp: Dont fail SCSI commands when transitioning to blocked fc_rport
  [SCSI] zfcp: Assign scheduled work to driver queue
  [SCSI] zfcp: Remove STATUS_COMMON_REMOVE flag as it is not required anymore
  [SCSI] zfcp: Implement module unloading
  [SCSI] zfcp: Merge trace code for fsf requests in one function
  [SCSI] zfcp: Access ports and units with container_of in sysfs code
  [SCSI] zfcp: Remove suspend callback
  [SCSI] zfcp: Remove global config_mutex
  [SCSI] zfcp: Replace local reference counting with common kref
  ...

[SCSI] modify change_queue_depth to take in reason why it is being called

2009-12-04T18:00:41+00:00

This patch modifies scsi_host_template->change_queue_depth so that
it takes an argument indicating why it is being called. This will be
used so that if a LLD needs to do some extra processing when
handling queue fulls or later ramp ups, it can do so.

This is a simple port of the drivers setting a change_queue_depth
callback. In the patch I just have these LLDs adjust the queue depth
if the user was requesting it.

Signed-off-by: Mike Christie 

[Vasu.Dev: v2
	Also converted pmcraid_change_queue_depth and then verified
all modules compile  using "make allmodconfig" for any new build
warnings on X86_64.

	Updated original description after combing two original
patches from Mike to make this patch git bisectable.]
Signed-off-by: Vasu Dev 
[jejb: fixed up 53c700]
Signed-off-by: James Bottomley

libata: add private driver field to struct ata_device

2009-12-03T19:36:18+00:00

This brings struct ata_device in-line with struct ata_{port,host}.

Signed-off-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Jeff Garzik

libata: retry failed FLUSH if device didn't fail it

2009-12-03T07:46:35+00:00

If ATA device failed FLUSH, it means that the device failed to write
out some amount of data and the error needs to be reported to upper
layers. As retries can't recover the lost data, FLUSH failures need to
be reported immediately in general.

However, if FLUSH fails due to transmission errors, the FLUSH needs to
be retried; otherwise, filesystems may switch to RO mode and/or raid
array may drop a drive for a random transmission glitch.

This condition can be rather easily reproduced on certain ahci
controllers which go through a PHY event after powersave mode switch +
ext4 combination.  Powersave mode switch is often closely followed by
flush from the filesystem failing the FLUSH with ATA bus error which
makes the filesystem code believe that data is lost and drop to RO
mode.  This was reported in the following bugzilla bug.

  http://bugzilla.kernel.org/show_bug.cgi?id=14543

This patch makes libata EH retry FLUSH if it wasn't failed by the
device.

Signed-off-by: Tejun Heo 
Reported-by: Andrey Vihrov 
Signed-off-by: Jeff Garzik

libata: make gtf_filter per-dev

2009-10-06T04:26:27+00:00

Add ->gtf_filter to ata_device and set it to ata_acpi_gtf_filter when
initializing ata_link.  This is to allow quirks which apply different
gtf filters.

Signed-off-by: Tejun Heo 
Signed-off-by: Jeff Garzik

libata: implement more acpi filtering options

2009-10-06T04:26:26+00:00

Currently libata-acpi can only filter DIPM among SATA feature enables
via _GTF.  This patch adds the capability to filter out FPDMA non-zero
offset, in-order guarantee and auto-activation.

Signed-off-by: Tejun Heo 
Signed-off-by: Jeff Garzik

libata: cosmetic updates

2009-10-06T04:25:03+00:00

We're about to add more SATA_* and ATA_ACPI_FILTER_* constants.
Reformat them in preparation.

Signed-off-by: Tejun Heo 
Signed-off-by: Jeff Garzik

libata: remove spindown skipping and warning

2009-09-01T23:47:20+00:00

This was a hack to give userland shutdown tools time to drop manual
spindown.  All popular distros updated quite some time ago and the due
is well passed.  Drop it.

Signed-off-by: Tejun Heo 
Cc: Jaswinder Singh Rajput 
Signed-off-by: Jeff Garzik

[libata] add DMA setup FIS auto-activate feature

2009-09-01T23:47:19+00:00

Hopefully results in fewer on-the-wire FIS's and no breakage.  We'll see!

Signed-off-by: Shaohua Li 
Signed-off-by: Jeff Garzik