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bfa_msgq.h
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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 
54  struct list_head qe;
56  void *cbarg;
57  size_t msg_size;
59 };
60 
63 };
64 
65 struct bfa_msgq_cmdq {
68 
71  u16 depth; /* FW Q depth is 16 bits */
72  struct bfa_dma addr;
74 
76  int offset;
79 
80  struct list_head pending_q; /* pending command queue */
81 
82  struct bfa_msgq *msgq;
83 };
84 
87 };
88 
89 typedef void (*bfa_msgq_mcfunc_t)(void *cbarg, struct bfi_msgq_mhdr *mhdr);
90 
91 struct bfa_msgq_rspq {
94 
97  u16 depth; /* FW Q depth is 16 bits */
98  struct bfa_dma addr;
100 
101  int nmclass;
102  struct {
104  void *cbarg;
105  } rsphdlr[BFI_MC_MAX];
106 
107  struct bfa_msgq *msgq;
108 };
109 
110 struct bfa_msgq {
113 
114  struct bfa_wc init_wc;
116 
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