LXR linux/drivers/net/ethernet/brocade/bna/bfa

   1/*
   2 * Linux network driver for QLogic BR-series 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) 2005-2014 Brocade Communications Systems, Inc.
  15 * Copyright (c) 2014-2015 QLogic Corporation
  16 * All rights reserved
  17 * www.qlogic.com
  18 */
  19
  20#ifndef __BFA_MSGQ_H__
  21#define __BFA_MSGQ_H__
  22
  23#include "bfa_defs.h"
  24#include "bfi.h"
  25#include "bfa_ioc.h"
  26#include "bfa_cs.h"
  27
  28#define BFA_MSGQ_FREE_CNT(_q)                                           \
  29        (((_q)->consumer_index - (_q)->producer_index - 1) & ((_q)->depth - 1))
  30
  31#define BFA_MSGQ_INDX_ADD(_q_indx, _qe_num, _q_depth)                   \
  32        ((_q_indx) = (((_q_indx) + (_qe_num)) & ((_q_depth) - 1)))
  33
  34#define BFA_MSGQ_CMDQ_NUM_ENTRY         128
  35#define BFA_MSGQ_CMDQ_SIZE                                              \
  36        (BFI_MSGQ_CMD_ENTRY_SIZE * BFA_MSGQ_CMDQ_NUM_ENTRY)
  37
  38#define BFA_MSGQ_RSPQ_NUM_ENTRY         128
  39#define BFA_MSGQ_RSPQ_SIZE                                              \
  40        (BFI_MSGQ_RSP_ENTRY_SIZE * BFA_MSGQ_RSPQ_NUM_ENTRY)
  41
  42#define bfa_msgq_cmd_set(_cmd, _cbfn, _cbarg, _msg_size, _msg_hdr)      \
  43do {                                                                    \
  44        (_cmd)->cbfn = (_cbfn);                                         \
  45        (_cmd)->cbarg = (_cbarg);                                       \
  46        (_cmd)->msg_size = (_msg_size);                                 \
  47        (_cmd)->msg_hdr = (_msg_hdr);                                   \
  48} while (0)
  49
  50struct bfa_msgq;
  51
  52typedef void (*bfa_msgq_cmdcbfn_t)(void *cbarg, enum bfa_status status);
  53
  54struct bfa_msgq_cmd_entry {
  55        struct list_head                                qe;
  56        bfa_msgq_cmdcbfn_t              cbfn;
  57        void                            *cbarg;
  58        size_t                          msg_size;
  59        struct bfi_msgq_mhdr *msg_hdr;
  60};
  61
  62enum bfa_msgq_cmdq_flags {
  63        BFA_MSGQ_CMDQ_F_DB_UPDATE       = 1,
  64};
  65
  66struct bfa_msgq_cmdq {
  67        bfa_fsm_t                       fsm;
  68        enum bfa_msgq_cmdq_flags flags;
  69
  70        u16                     producer_index;
  71        u16                     consumer_index;
  72        u16                     depth; /* FW Q depth is 16 bits */
  73        struct bfa_dma addr;
  74        struct bfa_mbox_cmd dbell_mb;
  75
  76        u16                     token;
  77        int                             offset;
  78        int                             bytes_to_copy;
  79        struct bfa_mbox_cmd copy_mb;
  80
  81        struct list_head                pending_q; /* pending command queue */
  82
  83        struct bfa_msgq *msgq;
  84};
  85
  86enum bfa_msgq_rspq_flags {
  87        BFA_MSGQ_RSPQ_F_DB_UPDATE       = 1,
  88};
  89
  90typedef void (*bfa_msgq_mcfunc_t)(void *cbarg, struct bfi_msgq_mhdr *mhdr);
  91
  92struct bfa_msgq_rspq {
  93        bfa_fsm_t                       fsm;
  94        enum bfa_msgq_rspq_flags flags;
  95
  96        u16                     producer_index;
  97        u16                     consumer_index;
  98        u16                     depth; /* FW Q depth is 16 bits */
  99        struct bfa_dma addr;
 100        struct bfa_mbox_cmd dbell_mb;
 101
 102        int                             nmclass;
 103        struct {
 104                bfa_msgq_mcfunc_t       cbfn;
 105                void                    *cbarg;
 106        } rsphdlr[BFI_MC_MAX];
 107
 108        struct bfa_msgq *msgq;
 109};
 110
 111struct bfa_msgq {
 112        struct bfa_msgq_cmdq cmdq;
 113        struct bfa_msgq_rspq rspq;
 114
 115        struct bfa_wc                   init_wc;
 116        struct bfa_mbox_cmd init_mb;
 117
 118        struct bfa_ioc_notify ioc_notify;
 119        struct bfa_ioc *ioc;
 120};
 121
 122u32 bfa_msgq_meminfo(void);
 123void bfa_msgq_memclaim(struct bfa_msgq *msgq, u8 *kva, u64 pa);
 124void bfa_msgq_attach(struct bfa_msgq *msgq, struct bfa_ioc *ioc);
 125void bfa_msgq_regisr(struct bfa_msgq *msgq, enum bfi_mclass mc,
 126                     bfa_msgq_mcfunc_t cbfn, void *cbarg);
 127void bfa_msgq_cmd_post(struct bfa_msgq *msgq,
 128                       struct bfa_msgq_cmd_entry *cmd);
 129void bfa_msgq_rsp_copy(struct bfa_msgq *msgq, u8 *buf, size_t buf_len);
 130
 131#endif
 132