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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_FCXP_PRIV_H__ | |
19 | #define __BFA_FCXP_PRIV_H__ | |
20 | ||
21 | #include <cs/bfa_sm.h> | |
22 | #include <protocol/fc.h> | |
23 | #include <bfa_svc.h> | |
24 | #include <bfi/bfi_fcxp.h> | |
25 | ||
26 | #define BFA_FCXP_MIN (1) | |
27 | #define BFA_FCXP_MAX_IBUF_SZ (2 * 1024 + 256) | |
28 | #define BFA_FCXP_MAX_LBUF_SZ (4 * 1024 + 256) | |
29 | ||
30 | struct bfa_fcxp_mod_s { | |
31 | struct bfa_s *bfa; /* backpointer to BFA */ | |
32 | struct bfa_fcxp_s *fcxp_list; /* array of FCXPs */ | |
33 | u16 num_fcxps; /* max num FCXP requests */ | |
34 | struct list_head fcxp_free_q; /* free FCXPs */ | |
35 | struct list_head fcxp_active_q; /* active FCXPs */ | |
36 | void *req_pld_list_kva; /* list of FCXP req pld */ | |
37 | u64 req_pld_list_pa; /* list of FCXP req pld */ | |
38 | void *rsp_pld_list_kva; /* list of FCXP resp pld */ | |
39 | u64 rsp_pld_list_pa; /* list of FCXP resp pld */ | |
40 | struct list_head wait_q; /* wait queue for free fcxp */ | |
41 | u32 req_pld_sz; | |
42 | u32 rsp_pld_sz; | |
43 | }; | |
44 | ||
45 | #define BFA_FCXP_MOD(__bfa) (&(__bfa)->modules.fcxp_mod) | |
46 | #define BFA_FCXP_FROM_TAG(__mod, __tag) (&(__mod)->fcxp_list[__tag]) | |
47 | ||
48 | typedef void (*fcxp_send_cb_t) (struct bfa_s *ioc, struct bfa_fcxp_s *fcxp, | |
49 | void *cb_arg, bfa_status_t req_status, | |
50 | u32 rsp_len, u32 resid_len, | |
51 | struct fchs_s *rsp_fchs); | |
52 | ||
53 | /** | |
54 | * Information needed for a FCXP request | |
55 | */ | |
56 | struct bfa_fcxp_req_info_s { | |
57 | struct bfa_rport_s *bfa_rport; /* Pointer to the bfa rport that was | |
58 | *returned from bfa_rport_create(). | |
59 | *This could be left NULL for WKA or for | |
60 | *FCXP interactions before the rport | |
61 | *nexus is established | |
62 | */ | |
63 | struct fchs_s fchs; /* request FC header structure */ | |
64 | u8 cts; /* continous sequence */ | |
65 | u8 class; /* FC class for the request/response */ | |
66 | u16 max_frmsz; /* max send frame size */ | |
67 | u16 vf_id; /* vsan tag if applicable */ | |
68 | u8 lp_tag; /* lport tag */ | |
69 | u32 req_tot_len; /* request payload total length */ | |
70 | }; | |
71 | ||
72 | struct bfa_fcxp_rsp_info_s { | |
73 | struct fchs_s rsp_fchs; /* Response frame's FC header will | |
74 | * be *sent back in this field */ | |
75 | u8 rsp_timeout; /* timeout in seconds, 0-no response | |
76 | */ | |
77 | u8 rsvd2[3]; | |
78 | u32 rsp_maxlen; /* max response length expected */ | |
79 | }; | |
80 | ||
81 | struct bfa_fcxp_s { | |
82 | struct list_head qe; /* fcxp queue element */ | |
83 | bfa_sm_t sm; /* state machine */ | |
84 | void *caller; /* driver or fcs */ | |
85 | struct bfa_fcxp_mod_s *fcxp_mod; | |
86 | /* back pointer to fcxp mod */ | |
87 | u16 fcxp_tag; /* internal tag */ | |
88 | struct bfa_fcxp_req_info_s req_info; | |
89 | /* request info */ | |
90 | struct bfa_fcxp_rsp_info_s rsp_info; | |
91 | /* response info */ | |
92 | u8 use_ireqbuf; /* use internal req buf */ | |
93 | u8 use_irspbuf; /* use internal rsp buf */ | |
94 | u32 nreq_sgles; /* num request SGLEs */ | |
95 | u32 nrsp_sgles; /* num response SGLEs */ | |
96 | struct list_head req_sgpg_q; /* SG pages for request buf */ | |
97 | struct list_head req_sgpg_wqe; /* wait queue for req SG page */ | |
98 | struct list_head rsp_sgpg_q; /* SG pages for response buf */ | |
99 | struct list_head rsp_sgpg_wqe; /* wait queue for rsp SG page */ | |
100 | ||
101 | bfa_fcxp_get_sgaddr_t req_sga_cbfn; | |
102 | /* SG elem addr user function */ | |
103 | bfa_fcxp_get_sglen_t req_sglen_cbfn; | |
104 | /* SG elem len user function */ | |
105 | bfa_fcxp_get_sgaddr_t rsp_sga_cbfn; | |
106 | /* SG elem addr user function */ | |
107 | bfa_fcxp_get_sglen_t rsp_sglen_cbfn; | |
108 | /* SG elem len user function */ | |
109 | bfa_cb_fcxp_send_t send_cbfn; /* send completion callback */ | |
110 | void *send_cbarg; /* callback arg */ | |
111 | struct bfa_sge_s req_sge[BFA_FCXP_MAX_SGES]; | |
112 | /* req SG elems */ | |
113 | struct bfa_sge_s rsp_sge[BFA_FCXP_MAX_SGES]; | |
114 | /* rsp SG elems */ | |
115 | u8 rsp_status; /* comp: rsp status */ | |
116 | u32 rsp_len; /* comp: actual response len */ | |
117 | u32 residue_len; /* comp: residual rsp length */ | |
118 | struct fchs_s rsp_fchs; /* comp: response fchs */ | |
119 | struct bfa_cb_qe_s hcb_qe; /* comp: callback qelem */ | |
120 | struct bfa_reqq_wait_s reqq_wqe; | |
121 | bfa_boolean_t reqq_waiting; | |
122 | }; | |
123 | ||
124 | #define BFA_FCXP_REQ_PLD(_fcxp) (bfa_fcxp_get_reqbuf(_fcxp)) | |
125 | ||
126 | #define BFA_FCXP_RSP_FCHS(_fcxp) (&((_fcxp)->rsp_info.fchs)) | |
127 | #define BFA_FCXP_RSP_PLD(_fcxp) (bfa_fcxp_get_rspbuf(_fcxp)) | |
128 | ||
129 | #define BFA_FCXP_REQ_PLD_PA(_fcxp) \ | |
130 | ((_fcxp)->fcxp_mod->req_pld_list_pa + \ | |
131 | ((_fcxp)->fcxp_mod->req_pld_sz * (_fcxp)->fcxp_tag)) | |
132 | ||
133 | #define BFA_FCXP_RSP_PLD_PA(_fcxp) \ | |
134 | ((_fcxp)->fcxp_mod->rsp_pld_list_pa + \ | |
135 | ((_fcxp)->fcxp_mod->rsp_pld_sz * (_fcxp)->fcxp_tag)) | |
136 | ||
137 | void bfa_fcxp_isr(struct bfa_s *bfa, struct bfi_msg_s *msg); | |
138 | #endif /* __BFA_FCXP_PRIV_H__ */ |