When a slot is busy, we will not free this slot until slot reset is
completed.  When unplugged the disk, we should release all command
tasks with unplugged port that have been sent.

If MVS_USE_TASKLET is defined, we can enable tasklet. Default is off.
Signed-off-by: NKe Wei <kewei@marvell.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

add a new tag handler to create slot num. When a slot num is busy, new
task can't hit this bit which was already used.  plumb in phy speeds.
Signed-off-by: NKe Wei <kewei@marvell.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

and remove some unused members from struct.
Signed-off-by: NKe Wei <kewei@marvell.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

The phy sas address is showing wrongly (wrong endianness).  Fix up the
endian transforms to make this correct.
Signed-off-by: NKe Wei <kewei@marvell.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

mvsas.c picked up execute permissions.  Move it back to being a plane
old file.

James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Signed-off-by: NOliver Pinter <oliver.pntr@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

- Fix build 'make randconfig' build warning spotted by Toralf Foerster:

drivers/scsi/mvsas.c: In function 'mvs_hexdump':
drivers/scsi/mvsas.c:715: error: implicit declaration of function 'isalnum'

- Remove unneeded prototypes (spotted by hch)
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Convert rough draft Marvell 6440 driver to a working driver.
Added support for SAS and SATA devices, hotplug, wide port, and expanders.
Signed-off-by: NKe Wei <kewei@marvell.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>