[SCSI] bfa: add debugfs support

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- Add debugfs support to obtain firmware trace, driver trace
  and read/write to registers.

- debugfs hierarchy:
  /sys/kernel/debug/bfa/host#
   where the host number corresponds to the one under /sys/class/scsi_host/host#

- Following are the new debugfs entries added:
  drvtrc: collect current driver trace
  fwtrc: collect current firmware trace.
  fwsave: collect last saved fw trace as a result of firmware crash.
  regwr: write one word to chip register
  regrd: read one or more words from chip register.

Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

...

This commit is contained in:

Jing Huang 2010-07-08 20:02:55 -07:00 • committed by James Bottomley

parent 08a17ced7a

commit ab2a9ba189

4 changed files with 571 additions and 2 deletions

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2

drivers/scsi/bfa/Makefile

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12

drivers/scsi/bfa/bfad.c

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547

drivers/scsi/bfa/bfad_debugfs.c

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12

drivers/scsi/bfa/bfad_drv.h

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