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
  22 #define BFA_AEN_MAX_ENTRY   512
  23
  24 extern s32 bfa_aen_max_cfg_entry;
  25 struct bfa_aen_s {
  26         void            *bfad;
  27         s32             max_entry;
  28         s32             write_index;
  29         s32             read_index;
  30         u32     bfad_num;
  31         u32     seq_num;
  32         void            (*aen_cb_notify)(void *bfad);
  33         void            (*gettimeofday)(struct bfa_timeval_s *tv);
  34         struct bfa_trc_mod_s    *trcmod;
  35         struct bfa_aen_entry_s  list[BFA_AEN_MAX_ENTRY]; /* Must be the last */
  36 };
  37
  38
  39 /**
  40  * Public APIs
  41  */
  42 static inline void
  43 bfa_aen_set_max_cfg_entry(int max_entry)
  44 {
  45         bfa_aen_max_cfg_entry = max_entry;
  46 }
  47
  48 static inline s32
  49 bfa_aen_get_max_cfg_entry(void)
  50 {
  51         return bfa_aen_max_cfg_entry;
  52 }
  53
  54 static inline s32
  55 bfa_aen_get_meminfo(void)
  56 {
  57         return (sizeof(struct bfa_aen_entry_s) * bfa_aen_get_max_cfg_entry());
  58 }
  59
  60 static inline s32
  61 bfa_aen_get_wi(struct bfa_aen_s *aen)
  62 {
  63         return aen->write_index;
  64 }
  65
  66 static inline s32
  67 bfa_aen_get_ri(struct bfa_aen_s *aen)
  68 {
  69         return aen->read_index;
  70 }
  71
  72 static inline s32
  73 bfa_aen_fetch_count(struct bfa_aen_s *aen, s32 read_index)
  74 {
  75         return ((aen->write_index + aen->max_entry) - read_index)
  76                 % aen->max_entry;
  77 }
  78
  79 s32 bfa_aen_init(struct bfa_aen_s *aen, struct bfa_trc_mod_s *trcmod,
  80                 void *bfad, u32 inst_id, void (*aen_cb_notify)(void *),
  81                 void (*gettimeofday)(struct bfa_timeval_s *));
  82
  83 s32 bfa_aen_post(struct bfa_aen_s *aen, enum bfa_aen_category aen_category,
  84                      int aen_type, union bfa_aen_data_u *aen_data);
  85
  86 s32 bfa_aen_fetch(struct bfa_aen_s *aen, struct bfa_aen_entry_s *aen_entry,
  87                       s32 entry_space, s32 rii, s32 *ri_arr,
  88                       s32 ri_arr_cnt);
  89
  90 s32 bfa_aen_get_inst(struct bfa_aen_s *aen);
  91
  92 #endif /* __BFA_AEN_H__ */