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| author | Jing Huang <huangj@brocade.com> | 2011-04-13 11:45:53 -0700 |
|---|---|---|
| committer | James Bottomley <jbottomley@parallels.com> | 2011-05-24 12:38:02 -0400 |
| commit | 45d7f0cc58183062adea0a1de3d8cba768134138 (patch) | |
| tree | 1977a1b1a1452a53f5e6504674168235f32ce23a /drivers/scsi/bfa/bfa_ioc_cb.c | |
| parent | a5442ba4a428081ebac7090f46c62ffaa17ca951 (diff) | |
| download | blackbird-op-linux-45d7f0cc58183062adea0a1de3d8cba768134138.tar.gz blackbird-op-linux-45d7f0cc58183062adea0a1de3d8cba768134138.zip | |
[SCSI] bfa: kdump fix
Root cause: When kernel crashes, 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 hang 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: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
Diffstat (limited to 'drivers/scsi/bfa/bfa_ioc_cb.c')
| -rw-r--r-- | drivers/scsi/bfa/bfa_ioc_cb.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/bfa_ioc_cb.c b/drivers/scsi/bfa/bfa_ioc_cb.c index e4a0713185b6..89ae4c8f95a2 100644 --- a/drivers/scsi/bfa/bfa_ioc_cb.c +++ b/drivers/scsi/bfa/bfa_ioc_cb.c @@ -32,6 +32,7 @@ static void bfa_ioc_cb_map_port(struct bfa_ioc_s *ioc); static void bfa_ioc_cb_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix); static void bfa_ioc_cb_notify_fail(struct bfa_ioc_s *ioc); static void bfa_ioc_cb_ownership_reset(struct bfa_ioc_s *ioc); +static bfa_boolean_t bfa_ioc_cb_sync_start(struct bfa_ioc_s *ioc); static void bfa_ioc_cb_sync_join(struct bfa_ioc_s *ioc); static void bfa_ioc_cb_sync_leave(struct bfa_ioc_s *ioc); static void bfa_ioc_cb_sync_ack(struct bfa_ioc_s *ioc); @@ -53,6 +54,7 @@ bfa_ioc_set_cb_hwif(struct bfa_ioc_s *ioc) hwif_cb.ioc_isr_mode_set = bfa_ioc_cb_isr_mode_set; hwif_cb.ioc_notify_fail = bfa_ioc_cb_notify_fail; hwif_cb.ioc_ownership_reset = bfa_ioc_cb_ownership_reset; + hwif_cb.ioc_sync_start = bfa_ioc_cb_sync_start; hwif_cb.ioc_sync_join = bfa_ioc_cb_sync_join; hwif_cb.ioc_sync_leave = bfa_ioc_cb_sync_leave; hwif_cb.ioc_sync_ack = bfa_ioc_cb_sync_ack; @@ -195,6 +197,15 @@ bfa_ioc_cb_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix) } /* + * Synchronized IOC failure processing routines + */ +static bfa_boolean_t +bfa_ioc_cb_sync_start(struct bfa_ioc_s *ioc) +{ + return bfa_ioc_cb_sync_complete(ioc); +} + +/* * Cleanup hw semaphore and usecnt registers */ static void |
