From 45d7f0cc58183062adea0a1de3d8cba768134138 Mon Sep 17 00:00:00 2001 From: Jing Huang Date: Wed, 13 Apr 2011 11:45:53 -0700 Subject: [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 Signed-off-by: James Bottomley --- drivers/scsi/bfa/bfa_ioc_cb.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers/scsi/bfa/bfa_ioc_cb.c') diff --git a/drivers/scsi/bfa/bfa_ioc_cb.c b/drivers/scsi/bfa/bfa_ioc_cb.c index e4a0713..89ae4c8 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 -- cgit v1.1