[SCSI] bfa: Introduce IOC event notification mechanism.

Introduced a generic event notification callback function that
receives IOC_ENABLED, IOC_DISABLED, IOC_FAILED events and notifies the
modules registered for these events.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

1 files changed, 16 insertions, 8 deletions

diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
index 62318d24f85e..ff8e21d579df 100644
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -197,18 +197,26 @@ struct bfa_ioc_cbfn_s {
 };
 
 /*
- * Heartbeat failure notification queue element.
+ * IOC event notification mechanism.
  */
-struct bfa_ioc_hbfail_notify_s {
+enum bfa_ioc_event_e {
+        BFA_IOC_E_ENABLED       = 1,
+        BFA_IOC_E_DISABLED      = 2,
+        BFA_IOC_E_FAILED        = 3,
+};
+
+typedef void (*bfa_ioc_notify_cbfn_t)(void *, enum bfa_ioc_event_e);
+
+struct bfa_ioc_notify_s {
         struct list_head                qe;
-        bfa_ioc_hbfail_cbfn_t   cbfn;
+        bfa_ioc_notify_cbfn_t   cbfn;
         void                    *cbarg;
 };
 
 /*
- * Initialize a heartbeat failure notification structure
+ * Initialize a IOC event notification structure
  */
-#define bfa_ioc_hbfail_init(__notify, __cbfn, __cbarg) do {     \
+#define bfa_ioc_notify_init(__notify, __cbfn, __cbarg) do {     \
         (__notify)->cbfn = (__cbfn);      \
         (__notify)->cbarg = (__cbarg);      \
 } while (0)
@@ -229,11 +237,11 @@ struct bfa_ioc_s {
         struct bfa_timer_s      sem_timer;
         struct bfa_timer_s      hb_timer;
         u32             hb_count;
-        struct list_head                hb_notify_q;
+        struct list_head        notify_q;
         void                    *dbg_fwsave;
         int                     dbg_fwsave_len;
         bfa_boolean_t           dbg_fwsave_once;
-        enum bfi_mclass         ioc_mc;
+        enum bfi_pcifn_class    clscode;
         struct bfa_ioc_regs_s   ioc_regs;
         struct bfa_trc_mod_s    *trcmod;
         struct bfa_ioc_drv_stats_s      stats;
@@ -334,7 +342,7 @@ void bfa_ioc_attach(struct bfa_ioc_s *ioc, void *bfa,
 void bfa_ioc_auto_recover(bfa_boolean_t auto_recover);
 void bfa_ioc_detach(struct bfa_ioc_s *ioc);
 void bfa_ioc_pci_init(struct bfa_ioc_s *ioc, struct bfa_pcidev_s *pcidev,
-                enum bfi_mclass mc);
+                enum bfi_pcifn_class clscode);
 void bfa_ioc_mem_claim(struct bfa_ioc_s *ioc,  u8 *dm_kva, u64 dm_pa);
 void bfa_ioc_enable(struct bfa_ioc_s *ioc);
 void bfa_ioc_disable(struct bfa_ioc_s *ioc);