linux-toradex.git/drivers/scsi/53c700.c, branch v2.6.26.8

[SCSI] Let scsi_cmnd->cmnd use request->cmd buffer

2008-05-02T15:18:22+00:00

 - struct scsi_cmnd had a 16 bytes command buffer of its own.
   This is an unnecessary duplication and copy of request's
   cmd. It is probably left overs from the time that scsi_cmnd
   could function without a request attached. So clean that up.

 - Once above is done, few places, apart from scsi-ml, needed
   adjustments due to changing the data type of scsi_cmnd->cmnd.

 - Lots of drivers still use MAX_COMMAND_SIZE. So I have left
   that #define but equate it to BLK_MAX_CDB. The way I see it
   and is reflected in the patch below is.
   MAX_COMMAND_SIZE - means: The longest fixed-length (*) SCSI CDB
                      as per the SCSI standard and is not related
                      to the implementation.
   BLK_MAX_CDB.     - The allocated space at the request level

 - I have audit all ISA drivers and made sure none use ->cmnd in a DMA
   Operation. Same audit was done by Andi Kleen.

(*)fixed-length here means commands that their size can be determined
   by their opcode and the CDB does not carry a length specifier, (unlike
   the VARIABLE_LENGTH_CMD(0x7f) command). This is actually not exactly
   true and the SCSI standard also defines extended commands and
   vendor specific commands that can be bigger than 16 bytes. The kernel
   will support these using the same infrastructure used for VARLEN CDB's.
   So in effect MAX_COMMAND_SIZE means the maximum size command
   scsi-ml supports without specifying a cmd_len by ULD's

Signed-off-by: Boaz Harrosh 
Signed-off-by: James Bottomley

[SCSI] replace sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE

2008-01-23T17:29:27+00:00

This replaces sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE in
several LLDs. It's a preparation for the future changes to remove
sense_buffer array in scsi_cmnd structure.

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

[SCSI] 53c700: Remove printk, which triggers because of low scsi clock on SNI RMs

2007-07-15T00:12:43+00:00

remove printk, which triggers because of low scsi clock on SNI RMs

Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: James Bottomley

[SCSI] 53c700: m68k support for the 53c700 SCSI core

2007-06-17T21:15:56+00:00

Add m68k support to the 53c700 SCSI driver

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: James Bottomley

[SCSI] 53c700: convert to use the data buffer accessors

2007-05-26T21:30:04+00:00

- remove the unnecessary map_single path.

- convert to use the new accessors for the sg lists and the
parameters.

Jens Axboe  did the for_each_sg cleanup.

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

[PATCH] remove many unneeded #includes of sched.h

2007-02-14T16:09:54+00:00

After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau 
Acked-by: Russell King 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[SCSI] 53c700: Allow setting burst length

2007-01-13T19:44:30+00:00

This is a patch, which allows not only disabling bursting but to specify
different burst lenghts. This feature is needed to get the 53c700 driver
working for the onboard SCSI controller of SNI RM machines, which only
work reliably with a 4 word burst length.

Signed-off-by: James Bottomley

[PATCH] Pass struct dev pointer to dma_cache_sync()

2006-12-07T16:39:41+00:00

Pass struct dev pointer to dma_cache_sync()

dma_cache_sync() is ill-designed in that it does not have a struct device
pointer argument which makes proper support for systems that consist of a
mix of coherent and non-coherent DMA devices hard.  Change dma_cache_sync
to take a struct device pointer as first argument and fix all its callers
to pass it.

Signed-off-by: Ralf Baechle 
Cc: James Bottomley 
Cc: "David S. Miller" 
Cc: Greg KH 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Add struct dev pointer to dma_is_consistent()

2006-12-07T16:39:41+00:00

dma_is_consistent() is ill-designed in that it does not have a struct
device pointer argument which makes proper support for systems that consist
of a mix of coherent and non-coherent DMA devices hard.  Change
dma_is_consistent to take a struct device pointer as first argument and fix
the sole caller to pass it.

Signed-off-by: Ralf Baechle 
Cc: James Bottomley 
Cc: "David S. Miller" 
Cc: Greg KH 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[SCSI] 53c700: brown paper bag fix for auto request sense

2006-12-03T15:26:48+00:00

In the switch over, I forgot to set the command length, so it sends out
a request sense with whatever length the prior command had (and fails
badly if it wasn't 6).

Signed-off-by: James Bottomley