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