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[SCSI] bfa: Add FC-transport based Asynchronous Event Notification support.

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- Added support to post vendor unique events on fc_host.
- Supports adapter, port, ioc, flash and remote port based AEN events.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Krishna Gudipati
2011-07-20 16:59:13 -07:00
committed by James Bottomley
parent a53becc9a9
commit 7826f304b1
17 changed files with 668 additions and 18 deletions
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26
drivers/scsi/bfa/bfad_im.c
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@@ -656,6 +656,31 @@ bfad_im_port_clean(struct bfad_im_port_s *im_port)
spin_unlock_irqrestore(&bfad->bfad_lock, flags);
}
static void bfad_aen_im_notify_handler(struct work_struct *work)
{
struct bfad_im_s *im =
container_of(work, struct bfad_im_s, aen_im_notify_work);
struct bfa_aen_entry_s *aen_entry;
struct bfad_s *bfad = im->bfad;
struct Scsi_Host *shost = bfad->pport.im_port->shost;
void *event_data;
unsigned long flags;
while (!list_empty(&bfad->active_aen_q)) {
spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
bfa_q_deq(&bfad->active_aen_q, &aen_entry);
spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
event_data = (char *)aen_entry + sizeof(struct list_head);
fc_host_post_vendor_event(shost, fc_get_event_number(),
sizeof(struct bfa_aen_entry_s) -
sizeof(struct list_head),
(char *)event_data, BFAD_NL_VENDOR_ID);
spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
}
}
bfa_status_t
bfad_im_probe(struct bfad_s *bfad)
{
@@ -676,6 +701,7 @@ bfad_im_probe(struct bfad_s *bfad)
rc = BFA_STATUS_FAILED;
}
INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
ext:
return rc;
}