[SCSI] bfa: kdump fix on 815 and 825 adapters
Root cause: When kernel crashes, On brocade 815/825 adapters,
bfa IOC state machine and FW doesn't get a notification and
hence are not cleanly shutdown. So registers holding driver/IOC
state information are not reset back to valid disabled/parking
values. This causes subsequent driver initialization to fail
during kdump kernel boot.
Fix description: during the initialization of first PCI function, reset
corresponding register when unclean shutown is detect by reading chip
registers. This will make sure that ioc/fw gets clean re-initialization.
Signed-off-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
index 23a90e7..de62b68 100644
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -346,6 +346,12 @@
void (*ioc_sync_ack) (struct bfa_ioc_s *ioc);
bfa_boolean_t (*ioc_sync_complete) (struct bfa_ioc_s *ioc);
bfa_boolean_t (*ioc_lpu_read_stat) (struct bfa_ioc_s *ioc);
+ void (*ioc_set_fwstate) (struct bfa_ioc_s *ioc,
+ enum bfi_ioc_state fwstate);
+ enum bfi_ioc_state (*ioc_get_fwstate) (struct bfa_ioc_s *ioc);
+ void (*ioc_set_alt_fwstate) (struct bfa_ioc_s *ioc,
+ enum bfi_ioc_state fwstate);
+ enum bfi_ioc_state (*ioc_get_alt_fwstate) (struct bfa_ioc_s *ioc);
};
/*