[SCSI] isci: initial sgpio write support

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Basic support to initialize the gpio unit, accept an incomming
SAS_GPIO_REG_TX_GP bitstream, and translate it to the ODx.n fields in
the hardware registers.  If register indexes outside the supported range
are specified in the SMP frame we simply accept the write and return how
many registers (SFF-8485) were written (libsas reports this as residue
in the request).

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

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Dan Williams 2011-09-01 21:18:31 -07:00 • committed by James Bottomley

parent 13257cfbc5

commit ad4f4c1de8

3 changed files with 87 additions and 0 deletions

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69

drivers/scsi/isci/host.c

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15

drivers/scsi/isci/host.h

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3

drivers/scsi/isci/init.c

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