drivers/net/ethernet/brocade/bna/bfa_msgq.h

   1 /*
   2  * Linux network driver for Brocade Converged Network Adapter.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License (GPL) Version 2 as
   6  * published by the Free Software Foundation
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  */
  13 /*
  14  * Copyright (c) 2005-2011 Brocade Communications Systems, Inc.
  15  * All rights reserved
  16  * www.brocade.com
  17  */
  18
  19 #ifndef __BFA_MSGQ_H__
  20 #define __BFA_MSGQ_H__
  21
  22 #include "bfa_defs.h"
  23 #include "bfi.h"
  24 #include "bfa_ioc.h"
  25 #include "bfa_cs.h"
  26
  27 #define BFA_MSGQ_FREE_CNT(_q)                                           \
  28         (((_q)->consumer_index - (_q)->producer_index - 1) & ((_q)->depth - 1))
  29
  30 #define BFA_MSGQ_INDX_ADD(_q_indx, _qe_num, _q_depth)                   \
  31         ((_q_indx) = (((_q_indx) + (_qe_num)) & ((_q_depth) - 1)))
  32
  33 #define BFA_MSGQ_CMDQ_NUM_ENTRY         128
  34 #define BFA_MSGQ_CMDQ_SIZE                                              \
  35         (BFI_MSGQ_CMD_ENTRY_SIZE * BFA_MSGQ_CMDQ_NUM_ENTRY)
  36
  37 #define BFA_MSGQ_RSPQ_NUM_ENTRY         128
  38 #define BFA_MSGQ_RSPQ_SIZE                                              \
  39         (BFI_MSGQ_RSP_ENTRY_SIZE * BFA_MSGQ_RSPQ_NUM_ENTRY)
  40
  41 #define bfa_msgq_cmd_set(_cmd, _cbfn, _cbarg, _msg_size, _msg_hdr)      \
  42 do {                                                                    \
  43         (_cmd)->cbfn = (_cbfn);                                         \
  44         (_cmd)->cbarg = (_cbarg);                                       \
  45         (_cmd)->msg_size = (_msg_size);                                 \
  46         (_cmd)->msg_hdr = (_msg_hdr);                                   \
  47 } while (0)
  48
  49 struct bfa_msgq;
  50
  51 typedef void (*bfa_msgq_cmdcbfn_t)(void *cbarg, enum bfa_status status);
  52
  53 struct bfa_msgq_cmd_entry {
  54         struct list_head                                qe;
  55         bfa_msgq_cmdcbfn_t              cbfn;
  56         void                            *cbarg;
  57         size_t                          msg_size;
  58         struct bfi_msgq_mhdr *msg_hdr;
  59 };
  60
  61 enum bfa_msgq_cmdq_flags {
  62         BFA_MSGQ_CMDQ_F_DB_UPDATE       = 1,
  63 };
  64
  65 struct bfa_msgq_cmdq {
  66         bfa_fsm_t                       fsm;
  67         enum bfa_msgq_cmdq_flags flags;
  68
  69         u16                     producer_index;
  70         u16                     consumer_index;
  71         u16                     depth; /* FW Q depth is 16 bits */
  72         struct bfa_dma addr;
  73         struct bfa_mbox_cmd dbell_mb;
  74
  75         u16                     token;
  76         int                             offset;
  77         int                             bytes_to_copy;
  78         struct bfa_mbox_cmd copy_mb;
  79
  80         struct list_head                pending_q; /* pending command queue */
  81
  82         struct bfa_msgq *msgq;
  83 };
  84
  85 enum bfa_msgq_rspq_flags {
  86         BFA_MSGQ_RSPQ_F_DB_UPDATE       = 1,
  87 };
  88
  89 typedef void (*bfa_msgq_mcfunc_t)(void *cbarg, struct bfi_msgq_mhdr *mhdr);
  90
  91 struct bfa_msgq_rspq {
  92         bfa_fsm_t                       fsm;
  93         enum bfa_msgq_rspq_flags flags;
  94
  95         u16                     producer_index;
  96         u16                     consumer_index;
  97         u16                     depth; /* FW Q depth is 16 bits */
  98         struct bfa_dma addr;
  99         struct bfa_mbox_cmd dbell_mb;
 100
 101         int                             nmclass;
 102         struct {
 103                 bfa_msgq_mcfunc_t       cbfn;
 104                 void                    *cbarg;
 105         } rsphdlr[BFI_MC_MAX];
 106
 107         struct bfa_msgq *msgq;
 108 };
 109
 110 struct bfa_msgq {
 111         struct bfa_msgq_cmdq cmdq;
 112         struct bfa_msgq_rspq rspq;
 113
 114         struct bfa_wc                   init_wc;
 115         struct bfa_mbox_cmd init_mb;
 116
 117         struct bfa_ioc_notify ioc_notify;
 118         struct bfa_ioc *ioc;
 119 };
 120
 121 u32 bfa_msgq_meminfo(void);
 122 void bfa_msgq_memclaim(struct bfa_msgq *msgq, u8 *kva, u64 pa);
 123 void bfa_msgq_attach(struct bfa_msgq *msgq, struct bfa_ioc *ioc);
 124 void bfa_msgq_regisr(struct bfa_msgq *msgq, enum bfi_mclass mc,
 125                      bfa_msgq_mcfunc_t cbfn, void *cbarg);
 126 void bfa_msgq_cmd_post(struct bfa_msgq *msgq,
 127                        struct bfa_msgq_cmd_entry *cmd);
 128 void bfa_msgq_rsp_copy(struct bfa_msgq *msgq, u8 *buf, size_t buf_len);
 129
 130 #endif