drivers/scsi/bfa/include/aen/bfa_aen.h

   1 /*
   2  * Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17 #ifndef __BFA_AEN_H__
  18 #define __BFA_AEN_H__
  19
  20 #include "defs/bfa_defs_aen.h"
  21 #include "defs/bfa_defs_status.h"
  22 #include "cs/bfa_debug.h"
  23
  24 #define BFA_AEN_MAX_ENTRY       512
  25
  26 extern int bfa_aen_max_cfg_entry;
  27 struct bfa_aen_s {
  28         void            *bfad;
  29         int             max_entry;
  30         int             write_index;
  31         int             read_index;
  32         int             bfad_num;
  33         int             seq_num;
  34         void            (*aen_cb_notify)(void *bfad);
  35         void            (*gettimeofday)(struct bfa_timeval_s *tv);
  36         struct bfa_trc_mod_s *trcmod;
  37         int             app_ri[BFA_AEN_MAX_APP]; /* For multiclient support */
  38         struct bfa_aen_entry_s list[BFA_AEN_MAX_ENTRY]; /* Must be the last */
  39 };
  40
  41
  42 /**
  43  * Public APIs
  44  */
  45 static inline void
  46 bfa_aen_set_max_cfg_entry(int max_entry)
  47 {
  48         bfa_aen_max_cfg_entry = max_entry;
  49 }
  50
  51 static inline int
  52 bfa_aen_get_max_cfg_entry(void)
  53 {
  54         return bfa_aen_max_cfg_entry;
  55 }
  56
  57 static inline int
  58 bfa_aen_get_meminfo(void)
  59 {
  60         return sizeof(struct bfa_aen_entry_s) * bfa_aen_get_max_cfg_entry();
  61 }
  62
  63 static inline int
  64 bfa_aen_get_wi(struct bfa_aen_s *aen)
  65 {
  66         return aen->write_index;
  67 }
  68
  69 static inline int
  70 bfa_aen_get_ri(struct bfa_aen_s *aen)
  71 {
  72         return aen->read_index;
  73 }
  74
  75 static inline int
  76 bfa_aen_fetch_count(struct bfa_aen_s *aen, enum bfa_aen_app  app_id)
  77 {
  78         bfa_assert((app_id < BFA_AEN_MAX_APP) && (app_id >= bfa_aen_app_bcu));
  79         return ((aen->write_index + aen->max_entry) - aen->app_ri[app_id])
  80                 % aen->max_entry;
  81 }
  82
  83 int bfa_aen_init(struct bfa_aen_s *aen, struct bfa_trc_mod_s *trcmod,
  84                 void *bfad, int bfad_num, void (*aen_cb_notify)(void *),
  85                 void (*gettimeofday)(struct bfa_timeval_s *));
  86
  87 void bfa_aen_post(struct bfa_aen_s *aen, enum bfa_aen_category aen_category,
  88                      int aen_type, union bfa_aen_data_u *aen_data);
  89
  90 bfa_status_t bfa_aen_fetch(struct bfa_aen_s *aen,
  91                         struct bfa_aen_entry_s *aen_entry,
  92                         int entry_req, enum bfa_aen_app app_id, int *entry_ret);
  93
  94 int bfa_aen_get_inst(struct bfa_aen_s *aen);
  95
  96 #endif /* __BFA_AEN_H__ */