linux-toradex.git/drivers/scsi/pmcraid.c, branch v3.19.2

scsi: remove ->change_queue_type method

2014-12-04T08:55:45+00:00

Since we got rid of ordered tag support in 2010 the prime use case of
switching on and off ordered tags has been obsolete.  The other function
of enabling/disabling tagging entirely has only been correctly implemented
by the 53c700 driver and isn't generally useful.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Bart Van Assche 
Reviewed-by: Martin K. Petersen

scsi: drop reason argument from ->change_queue_depth

2014-11-24T13:45:27+00:00

Drop the now unused reason argument from the ->change_queue_depth method.
Also add a return value to scsi_adjust_queue_depth, and rename it to
scsi_change_queue_depth now that it can be used as the default
->change_queue_depth implementation.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Mike Christie 
Reviewed-by: Hannes Reinecke

scsi: don't set tagging state from scsi_adjust_queue_depth

2014-11-12T10:19:43+00:00

Remove the tagged argument from scsi_adjust_queue_depth, and just let it
handle the queue depth.  For most drivers those two are fairly separate,
given that most modern drivers don't care about the SCSI "tagged" status
of a command at all, and many old drivers allow queuing of multiple
untagged commands in the driver.

Instead we start out with the ->simple_tags flag set before calling
->slave_configure, which is how all drivers actually looking at
->simple_tags except for one worke anyway.  The one other case looks
broken, but I've kept the behavior as-is for now.

Except for that we only change ->simple_tags from the ->change_queue_type,
and when rejecting a tag message in a single driver, so keeping this
churn out of scsi_adjust_queue_depth is a clear win.

Now that the usage of scsi_adjust_queue_depth is more obvious we can
also remove all the trivial instances in ->slave_alloc or ->slave_configure
that just set it to the cmd_per_lun default.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Mike Christie 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Martin K. Petersen

scsi: always assign block layer tags if enabled

2014-11-12T10:19:43+00:00

Allow a driver to ask for block layer tags by setting .use_blk_tags in the
host template, in which case it will always see a valid value in
request->tag, similar to the behavior when using blk-mq.  This means even
SCSI "untagged" commands will now have a tag, which is especially useful
when using a host-wide tag map.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Mike Christie 
Reviewed-by: Martin K. Petersen 
Reviewed-by: Hannes Reinecke

scsi: remove abuses of scsi_populate_tag

2014-11-12T10:19:41+00:00

Unless we want to build a SPI tag message we should just check SCMD_TAGGED
instead of reverse engineering a tag type through the use of
scsi_populate_tag_msg.

Also rename the function to spi_populate_tag_msg, make it behave like the
other spi message helpers, and move it to the spi transport class.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Mike Christie 
Reviewed-by: Hannes Reinecke

scsi: provide a generic change_queue_type method

2014-11-12T10:19:39+00:00

Most drivers use exactly the same implementation, so provide it as a
library function.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Bart Van Assche 
Reviewed-by: Mike Christie 
Reviewed-by: Martin K. Petersen 
Reviewed-by: Hannes Reinecke

pmcraid: Use pci_enable_msix_range() instead of pci_enable_msix()

2014-09-16T16:09:57+00:00

As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range()  or pci_enable_msi_exact()
and pci_enable_msix_range() or pci_enable_msix_exact()
interfaces.

Signed-off-by: Alexander Gordeev 
Reviewed-by: Tomas Henzl 
Signed-off-by: Christoph Hellwig

pmcraid: Get rid of a redundant assignment

2014-09-16T16:09:57+00:00

Signed-off-by: Alexander Gordeev 
Reviewed-by: Tomas Henzl 
Signed-off-by: Christoph Hellwig

drivers/scsi: replace strict_strto calls

2014-08-08T22:57:28+00:00

Replace obsolete strict_strto with more appropriate kstrto calls

Signed-off-by: Daniel Walter 
Cc: "James E.J. Bottomley" 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

scsi: use 64-bit LUNs

2014-07-17T20:07:37+00:00

The SCSI standard defines 64-bit values for LUNs, and large arrays
employing large or hierarchical LUN numbers become more and more
common.

So update the linux SCSI stack to use 64-bit LUN numbers.

Signed-off-by: Hannes Reinecke 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Ewan Milne 
Signed-off-by: Christoph Hellwig