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