189 lines
7.5 KiB
C
189 lines
7.5 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_FCPIM_PRIV_H__
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#define __BFA_FCPIM_PRIV_H__
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#include <bfa_fcpim.h>
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#include <defs/bfa_defs_fcpim.h>
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#include <cs/bfa_wc.h>
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#include "bfa_sgpg_priv.h"
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#define BFA_ITNIM_MIN 32
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#define BFA_ITNIM_MAX 1024
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#define BFA_IOIM_MIN 8
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#define BFA_IOIM_MAX 2000
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#define BFA_TSKIM_MIN 4
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#define BFA_TSKIM_MAX 512
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#define BFA_FCPIM_PATHTOV_DEF (30 * 1000) /* in millisecs */
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#define BFA_FCPIM_PATHTOV_MAX (90 * 1000) /* in millisecs */
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#define bfa_fcpim_stats(__fcpim, __stats) \
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((__fcpim)->stats.__stats++)
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struct bfa_fcpim_mod_s {
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struct bfa_s *bfa;
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struct bfa_itnim_s *itnim_arr;
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struct bfa_ioim_s *ioim_arr;
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struct bfa_ioim_sp_s *ioim_sp_arr;
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struct bfa_tskim_s *tskim_arr;
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struct bfa_dma_s snsbase;
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int num_itnims;
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int num_ioim_reqs;
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int num_tskim_reqs;
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u32 path_tov;
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u16 q_depth;
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u16 rsvd;
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struct list_head itnim_q; /* queue of active itnim */
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struct list_head ioim_free_q; /* free IO resources */
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struct list_head ioim_resfree_q; /* IOs waiting for f/w */
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struct list_head ioim_comp_q; /* IO global comp Q */
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struct list_head tskim_free_q;
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u32 ios_active; /* current active IOs */
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u32 delay_comp;
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struct bfa_fcpim_stats_s stats;
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};
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struct bfa_ioim_s;
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struct bfa_tskim_s;
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/**
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* BFA IO (initiator mode)
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*/
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struct bfa_ioim_s {
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struct list_head qe; /* queue elememt */
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bfa_sm_t sm; /* BFA ioim state machine */
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struct bfa_s *bfa; /* BFA module */
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struct bfa_fcpim_mod_s *fcpim; /* parent fcpim module */
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struct bfa_itnim_s *itnim; /* i-t-n nexus for this IO */
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struct bfad_ioim_s *dio; /* driver IO handle */
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u16 iotag; /* FWI IO tag */
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u16 abort_tag; /* unqiue abort request tag */
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u16 nsges; /* number of SG elements */
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u16 nsgpgs; /* number of SG pages */
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struct bfa_sgpg_s *sgpg; /* first SG page */
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struct list_head sgpg_q; /* allocated SG pages */
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struct bfa_cb_qe_s hcb_qe; /* bfa callback qelem */
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bfa_cb_cbfn_t io_cbfn; /* IO completion handler */
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struct bfa_ioim_sp_s *iosp; /* slow-path IO handling */
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};
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struct bfa_ioim_sp_s {
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struct bfi_msg_s comp_rspmsg; /* IO comp f/w response */
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u8 *snsinfo; /* sense info for this IO */
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struct bfa_sgpg_wqe_s sgpg_wqe; /* waitq elem for sgpg */
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struct bfa_reqq_wait_s reqq_wait; /* to wait for room in reqq */
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bfa_boolean_t abort_explicit; /* aborted by OS */
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struct bfa_tskim_s *tskim; /* Relevant TM cmd */
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};
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/**
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* BFA Task management command (initiator mode)
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*/
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struct bfa_tskim_s {
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struct list_head qe;
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bfa_sm_t sm;
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struct bfa_s *bfa; /* BFA module */
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struct bfa_fcpim_mod_s *fcpim; /* parent fcpim module */
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struct bfa_itnim_s *itnim; /* i-t-n nexus for this IO */
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struct bfad_tskim_s *dtsk; /* driver task mgmt cmnd */
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bfa_boolean_t notify; /* notify itnim on TM comp */
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lun_t lun; /* lun if applicable */
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enum fcp_tm_cmnd tm_cmnd; /* task management command */
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u16 tsk_tag; /* FWI IO tag */
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u8 tsecs; /* timeout in seconds */
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struct bfa_reqq_wait_s reqq_wait; /* to wait for room in reqq */
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struct list_head io_q; /* queue of affected IOs */
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struct bfa_wc_s wc; /* waiting counter */
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struct bfa_cb_qe_s hcb_qe; /* bfa callback qelem */
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enum bfi_tskim_status tsk_status; /* TM status */
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};
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/**
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* BFA i-t-n (initiator mode)
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*/
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struct bfa_itnim_s {
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struct list_head qe; /* queue element */
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bfa_sm_t sm; /* i-t-n im BFA state machine */
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struct bfa_s *bfa; /* bfa instance */
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struct bfa_rport_s *rport; /* bfa rport */
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void *ditn; /* driver i-t-n structure */
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struct bfi_mhdr_s mhdr; /* pre-built mhdr */
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u8 msg_no; /* itnim/rport firmware handle */
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u8 reqq; /* CQ for requests */
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struct bfa_cb_qe_s hcb_qe; /* bfa callback qelem */
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struct list_head pending_q; /* queue of pending IO requests*/
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struct list_head io_q; /* queue of active IO requests */
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struct list_head io_cleanup_q; /* IO being cleaned up */
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struct list_head tsk_q; /* queue of active TM commands */
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struct list_head delay_comp_q;/* queue of failed inflight cmds */
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bfa_boolean_t seq_rec; /* SQER supported */
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bfa_boolean_t is_online; /* itnim is ONLINE for IO */
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bfa_boolean_t iotov_active; /* IO TOV timer is active */
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struct bfa_wc_s wc; /* waiting counter */
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struct bfa_timer_s timer; /* pending IO TOV */
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struct bfa_reqq_wait_s reqq_wait; /* to wait for room in reqq */
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struct bfa_fcpim_mod_s *fcpim; /* fcpim module */
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struct bfa_itnim_hal_stats_s stats;
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};
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#define bfa_itnim_is_online(_itnim) ((_itnim)->is_online)
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#define BFA_FCPIM_MOD(_hal) (&(_hal)->modules.fcpim_mod)
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#define BFA_IOIM_FROM_TAG(_fcpim, _iotag) \
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(&fcpim->ioim_arr[_iotag])
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#define BFA_TSKIM_FROM_TAG(_fcpim, _tmtag) \
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(&fcpim->tskim_arr[_tmtag & (fcpim->num_tskim_reqs - 1)])
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/*
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* function prototypes
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*/
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void bfa_ioim_attach(struct bfa_fcpim_mod_s *fcpim,
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struct bfa_meminfo_s *minfo);
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void bfa_ioim_detach(struct bfa_fcpim_mod_s *fcpim);
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void bfa_ioim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
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void bfa_ioim_good_comp_isr(struct bfa_s *bfa,
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struct bfi_msg_s *msg);
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void bfa_ioim_cleanup(struct bfa_ioim_s *ioim);
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void bfa_ioim_cleanup_tm(struct bfa_ioim_s *ioim,
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struct bfa_tskim_s *tskim);
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void bfa_ioim_iocdisable(struct bfa_ioim_s *ioim);
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void bfa_ioim_tov(struct bfa_ioim_s *ioim);
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void bfa_tskim_attach(struct bfa_fcpim_mod_s *fcpim,
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struct bfa_meminfo_s *minfo);
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void bfa_tskim_detach(struct bfa_fcpim_mod_s *fcpim);
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void bfa_tskim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
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void bfa_tskim_iodone(struct bfa_tskim_s *tskim);
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void bfa_tskim_iocdisable(struct bfa_tskim_s *tskim);
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void bfa_tskim_cleanup(struct bfa_tskim_s *tskim);
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void bfa_itnim_meminfo(struct bfa_iocfc_cfg_s *cfg, u32 *km_len,
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u32 *dm_len);
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void bfa_itnim_attach(struct bfa_fcpim_mod_s *fcpim,
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struct bfa_meminfo_s *minfo);
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void bfa_itnim_detach(struct bfa_fcpim_mod_s *fcpim);
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void bfa_itnim_iocdisable(struct bfa_itnim_s *itnim);
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void bfa_itnim_isr(struct bfa_s *bfa, struct bfi_msg_s *msg);
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void bfa_itnim_iodone(struct bfa_itnim_s *itnim);
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void bfa_itnim_tskdone(struct bfa_itnim_s *itnim);
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bfa_boolean_t bfa_itnim_hold_io(struct bfa_itnim_s *itnim);
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#endif /* __BFA_FCPIM_PRIV_H__ */
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