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[SCSI] bfa: kdump fix on 815 and 825 adapters

Telusuri Sumber 
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>
This commit is contained in:
Vijaya Mohan Guvva
2013-05-13 02:33:26 -07:00
committed by James Bottomley
orang tua f2a0cc3ffd
melakukan c679b599af
5 mengubah file dengan 150 tambahan dan 24 penghapusan
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6
drivers/scsi/bfa/bfa_ioc.h
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@@ -346,6 +346,12 @@ struct bfa_ioc_hwif_s {
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);
};
/*