[SCSI] hpsa: do soft reset if hard reset is broken

on driver load, if reset_devices is set, and the hard reset
attempts fail, try to bring up the controller to the point that
a command can be sent, and send it a soft reset command, then
after the reset undo whatever driver initialization was done to get
it to the point to take a command, and re-do it after the reset.

This is to get kdump to work on all the "non-resettable" controllers
(except 64xx controllers which can't be reset due to the potentially
shared cache module.)

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index b1412a7f4514..6d8dcd4dd06b 100644
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -127,8 +127,10 @@ struct ctlr_info {
 };
 #define HPSA_ABORT_MSG 0
 #define HPSA_DEVICE_RESET_MSG 1
-#define HPSA_BUS_RESET_MSG 2
-#define HPSA_HOST_RESET_MSG 3
+#define HPSA_RESET_TYPE_CONTROLLER 0x00
+#define HPSA_RESET_TYPE_BUS 0x01
+#define HPSA_RESET_TYPE_TARGET 0x03
+#define HPSA_RESET_TYPE_LUN 0x04
 #define HPSA_MSG_SEND_RETRY_LIMIT 10
 #define HPSA_MSG_SEND_RETRY_INTERVAL_MSECS (10000)