linux-toradex.git/include/scsi, branch v2.6.22.7

[SCSI] sas_scsi_host: Convert to use the kthread API

2007-05-06T14:33:17+00:00

Signed-off-by: Christoph Hellwig 
Signed-off-by: James Bottomley

[SCSI] modalias for scsi devices

2007-04-17T22:15:04+00:00

The following patch adds support for sysfs/uevent modalias
attribute for scsi devices (like disks, tapes, cdroms etc),
based on whatever current sd.c, sr.c, st.c and osst.c drivers
supports.

The modalias format is like this:

 scsi:type-0x04

(for TYPE_WORM, handled by sr.c now).

Several comments.

o This hexadecimal type value is because all TYPE_XXX constants
  in include/scsi/scsi.h are given in hex, but __stringify() will
  not convert them to decimal (so it will NOT be scsi:type-4).
  Since it does not really matter in which format it is, while
  both modalias in module and modalias attribute match each other,
  I descided to go for that 0x%02x format (and added a comment in
  include/scsi/scsi.h to keep them that way), instead of changing
  them all to decimal.

o There was no .uevent routine for SCSI bus.  It might be a good
  idea to add some more ueven environment variables in there.

o osst.c driver handles tapes too, like st.c, but only SOME tapes.
  With this setup, hotplug scripts (or whatever is used by the
  user) will try to load both st and osst modules for all SCSI
  tapes found, because both modules have scsi:type-0x01 alias).
  It is not harmful, but one extra module is no good either.
  It is possible to solve this, by exporting more info in
  modalias attribute, including vendor and device identification
  strings, so that modalias becomes something like
    scsi:type-0x12:vendor-Adaptec LTD:device-OnStream Tape Drive
  and having that, match for all 3 attributes, not only device
  type.  But oh well, vendor and device strings may be large,
  and they do contain spaces and whatnot.
  So I left them for now, awaiting for comments first.

Signed-off-by: Michael Tokarev 
Signed-off-by: James Bottomley

[SCSI] sd: implement START/STOP management

2007-03-20T17:06:20+00:00

Implement SBC START/STOP management.  sdev->mange_start_stop is added.
When it's set to one, sd STOPs the device on suspend and shutdown and
STARTs it on resume.  sdev->manage_start_stop defaults is in sdev
instead of scsi_disk cdev to allow ->slave_config() override the
default configuration but is exported under scsi_disk sysfs node as
sdev->allow_restart is.

When manage_start_stop is zero (the default value), this patch doesn't
introduce any behavior change.

Signed-off-by: Tejun Heo 

Rejections fixed and
Signed-off-by: James Bottomley

[SCSI] expose eh_timed_out to the host template

2007-03-20T15:56:49+00:00

It looks like megaraid_sas at least needs this to throttle its commands
as they begin to time out.  The code keeps the existing transport
template use of eh_timed_out (and allows the transport to override the
host if they both have this callback).

Signed-off-by: James Bottomley

[SCSI] fc_transport: update potential link speeds

2007-03-20T15:52:04+00:00

This patch updates the FC transport for all speeds identified in
SM-HBA.  Note: it does not sync the "bit" definitions, as that is
actually insulated from user-space via the sysfs text string. (I could
do it, but it does introduce a potential binary-incompatibility).

Signed-off-by: James Smart 
Signed-off-by: James Bottomley

[SCSI] tgt: fix sesnse buffer problems

2007-03-11T16:39:27+00:00

This patch simplify the way to notify LLDs of the command completion
and addresses the following sense buffer problems:

- can't handle both data and sense.
- forces user-space to use aligned sense buffer

tgt copies sense_data from userspace to cmnd->sense_buffer (if
necessary), maps user-space pages (if necessary) and then calls
host->transfer_response (host->transfer_data is removed).

Signed-off-by: FUJITA Tomonori 
Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] tgt: rm bio hacks in scsi tgt

2007-03-11T16:31:33+00:00

scsi tgt breaks up a command into multple scatterlists
if we cannot fit all the data in one. This was because
the block rq helpers did not support large requests and
because we can get a command of any old size so it is
hard to preallocate pages for scatterlist large enough
(we cannot really preallocate pages with the bio map
user path). In 2.6.20, we added large request support to
the block layer helper, blk_rq_map_user. And at LSF,
we talked about increasing SCSI_MAX_PHYS_SEGMENTS for
scsi tgt if we want to support really really :) large
(greater than 256 * PAGE_SIZE in the worst mapping case)
requests.

The only target currently implemented does not even support
the multiple scatterlists stuff and only supports smaller
requests, so this patch just coverts scsi tgt to use
blk_rq_map_user.

Signed-off-by: Mike Christie 
Signed-off-by: FUJITA Tomonori 
Signed-off-by: James Bottomley

[SCSI] iscsi: rename DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH

2007-03-11T16:26:50+00:00

This patch renames DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH to avoid
confusion with the drivers default values (DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH
is the iscsi RFC specific default).

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] sd: make printing use a common prefix

2007-03-11T16:20:17+00:00

Make SCSI disk printing more consistent:

 - Define sd_printk(), sd_print_sense_hdr() and sd_print_result()

 - Move relevant header bits into sd.h

 - Remove all the legacy disk_name passing and use scsi_disk pointers
   where possible

 - Switch printk() lines to the new sd_ functions so that output is
   consistent

Signed-off-by: Martin K. Petersen 
Signed-off-by: James Bottomley

[SCSI] Make error printing more verbose

2007-03-11T16:17:49+00:00

This patch enhances SCSI error printing by:

 - Making use of scsi_print_result() in the completion functions.

 - Having scmd_printk() output the disk name (when applicable).

Signed-off-by: Martin K. Petersen 
Signed-off-by: James Bottomley