139 lines
4.9 KiB
C
139 lines
4.9 KiB
C
/*
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* Copyright (c) 2005-2009 Brocade Communications Systems, Inc.
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* All rights reserved
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* www.brocade.com
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*
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* Linux driver for Brocade Fibre Channel Host Bus Adapter.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (GPL) Version 2 as
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* published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#ifndef __BFA_FCXP_PRIV_H__
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#define __BFA_FCXP_PRIV_H__
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#include <cs/bfa_sm.h>
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#include <protocol/fc.h>
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#include <bfa_svc.h>
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#include <bfi/bfi_fcxp.h>
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#define BFA_FCXP_MIN (1)
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#define BFA_FCXP_MAX_IBUF_SZ (2 * 1024 + 256)
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#define BFA_FCXP_MAX_LBUF_SZ (4 * 1024 + 256)
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struct bfa_fcxp_mod_s {
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struct bfa_s *bfa; /* backpointer to BFA */
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struct bfa_fcxp_s *fcxp_list; /* array of FCXPs */
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u16 num_fcxps; /* max num FCXP requests */
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struct list_head fcxp_free_q; /* free FCXPs */
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struct list_head fcxp_active_q; /* active FCXPs */
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void *req_pld_list_kva; /* list of FCXP req pld */
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u64 req_pld_list_pa; /* list of FCXP req pld */
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void *rsp_pld_list_kva; /* list of FCXP resp pld */
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u64 rsp_pld_list_pa; /* list of FCXP resp pld */
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struct list_head wait_q; /* wait queue for free fcxp */
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u32 req_pld_sz;
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u32 rsp_pld_sz;
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};
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#define BFA_FCXP_MOD(__bfa) (&(__bfa)->modules.fcxp_mod)
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#define BFA_FCXP_FROM_TAG(__mod, __tag) (&(__mod)->fcxp_list[__tag])
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typedef void (*fcxp_send_cb_t) (struct bfa_s *ioc, struct bfa_fcxp_s *fcxp,
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void *cb_arg, bfa_status_t req_status,
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u32 rsp_len, u32 resid_len,
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struct fchs_s *rsp_fchs);
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/**
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* Information needed for a FCXP request
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*/
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struct bfa_fcxp_req_info_s {
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struct bfa_rport_s *bfa_rport; /* Pointer to the bfa rport that was
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*returned from bfa_rport_create().
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*This could be left NULL for WKA or for
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*FCXP interactions before the rport
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*nexus is established
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*/
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struct fchs_s fchs; /* request FC header structure */
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u8 cts; /* continous sequence */
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u8 class; /* FC class for the request/response */
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u16 max_frmsz; /* max send frame size */
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u16 vf_id; /* vsan tag if applicable */
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u8 lp_tag; /* lport tag */
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u32 req_tot_len; /* request payload total length */
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};
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struct bfa_fcxp_rsp_info_s {
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struct fchs_s rsp_fchs; /* Response frame's FC header will
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* be *sent back in this field */
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u8 rsp_timeout; /* timeout in seconds, 0-no response
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*/
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u8 rsvd2[3];
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u32 rsp_maxlen; /* max response length expected */
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};
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struct bfa_fcxp_s {
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struct list_head qe; /* fcxp queue element */
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bfa_sm_t sm; /* state machine */
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void *caller; /* driver or fcs */
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struct bfa_fcxp_mod_s *fcxp_mod;
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/* back pointer to fcxp mod */
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u16 fcxp_tag; /* internal tag */
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struct bfa_fcxp_req_info_s req_info;
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/* request info */
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struct bfa_fcxp_rsp_info_s rsp_info;
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/* response info */
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u8 use_ireqbuf; /* use internal req buf */
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u8 use_irspbuf; /* use internal rsp buf */
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u32 nreq_sgles; /* num request SGLEs */
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u32 nrsp_sgles; /* num response SGLEs */
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struct list_head req_sgpg_q; /* SG pages for request buf */
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struct list_head req_sgpg_wqe; /* wait queue for req SG page */
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struct list_head rsp_sgpg_q; /* SG pages for response buf */
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struct list_head rsp_sgpg_wqe; /* wait queue for rsp SG page */
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bfa_fcxp_get_sgaddr_t req_sga_cbfn;
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/* SG elem addr user function */
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bfa_fcxp_get_sglen_t req_sglen_cbfn;
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/* SG elem len user function */
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bfa_fcxp_get_sgaddr_t rsp_sga_cbfn;
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/* SG elem addr user function */
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bfa_fcxp_get_sglen_t rsp_sglen_cbfn;
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/* SG elem len user function */
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bfa_cb_fcxp_send_t send_cbfn; /* send completion callback */
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void *send_cbarg; /* callback arg */
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struct bfa_sge_s req_sge[BFA_FCXP_MAX_SGES];
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/* req SG elems */
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struct bfa_sge_s rsp_sge[BFA_FCXP_MAX_SGES];
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/* rsp SG elems */
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u8 rsp_status; /* comp: rsp status */
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u32 rsp_len; /* comp: actual response len */
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u32 residue_len; /* comp: residual rsp length */
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struct fchs_s rsp_fchs; /* comp: response fchs */
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struct bfa_cb_qe_s hcb_qe; /* comp: callback qelem */
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struct bfa_reqq_wait_s reqq_wqe;
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bfa_boolean_t reqq_waiting;
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};
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#define BFA_FCXP_REQ_PLD(_fcxp) (bfa_fcxp_get_reqbuf(_fcxp))
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#define BFA_FCXP_RSP_FCHS(_fcxp) (&((_fcxp)->rsp_info.fchs))
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#define BFA_FCXP_RSP_PLD(_fcxp) (bfa_fcxp_get_rspbuf(_fcxp))
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#define BFA_FCXP_REQ_PLD_PA(_fcxp) \
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((_fcxp)->fcxp_mod->req_pld_list_pa + \
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((_fcxp)->fcxp_mod->req_pld_sz * (_fcxp)->fcxp_tag))
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#define BFA_FCXP_RSP_PLD_PA(_fcxp) \
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((_fcxp)->fcxp_mod->rsp_pld_list_pa + \
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((_fcxp)->fcxp_mod->rsp_pld_sz * (_fcxp)->fcxp_tag))
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void bfa_fcxp_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
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#endif /* __BFA_FCXP_PRIV_H__ */
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