drivers/scsi/bfa/bfa_callback_priv.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
  18 #ifndef __BFA_CALLBACK_PRIV_H__
  19 #define __BFA_CALLBACK_PRIV_H__
  20
  21 #include <cs/bfa_q.h>
  22
  23 typedef void    (*bfa_cb_cbfn_t) (void *cbarg, bfa_boolean_t complete);
  24
  25 /**
  26  * Generic BFA callback element.
  27  */
  28 struct bfa_cb_qe_s {
  29         struct list_head         qe;
  30         bfa_cb_cbfn_t  cbfn;
  31         bfa_boolean_t   once;
  32         u32             rsvd;
  33         void           *cbarg;
  34 };
  35
  36 #define bfa_cb_queue(__bfa, __hcb_qe, __cbfn, __cbarg) do {             \
  37         (__hcb_qe)->cbfn  = (__cbfn);      \
  38         (__hcb_qe)->cbarg = (__cbarg);      \
  39         list_add_tail(&(__hcb_qe)->qe, &(__bfa)->comp_q);      \
  40 } while (0)
  41
  42 #define bfa_cb_dequeue(__hcb_qe)        list_del(&(__hcb_qe)->qe)
  43
  44 #define bfa_cb_queue_once(__bfa, __hcb_qe, __cbfn, __cbarg) do {        \
  45         (__hcb_qe)->cbfn  = (__cbfn);      \
  46         (__hcb_qe)->cbarg = (__cbarg);      \
  47         if (!(__hcb_qe)->once) {      \
  48                 list_add_tail((__hcb_qe), &(__bfa)->comp_q);      \
  49                 (__hcb_qe)->once = BFA_TRUE;                            \
  50         }                                                               \
  51 } while (0)
  52
  53 #define bfa_cb_queue_done(__hcb_qe) do {                                \
  54         (__hcb_qe)->once = BFA_FALSE;                                   \
  55 } while (0)
  56
  57 #endif /* __BFA_CALLBACK_PRIV_H__ */