diff options
Diffstat (limited to 'drivers/scsi/bfa/bfa_fcpim_priv.h')
| -rw-r--r-- | drivers/scsi/bfa/bfa_fcpim_priv.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/bfa_fcpim_priv.h b/drivers/scsi/bfa/bfa_fcpim_priv.h new file mode 100644 index 00000000000..153206cfb37 --- /dev/null +++ b/drivers/scsi/bfa/bfa_fcpim_priv.h @@ -0,0 +1,188 @@ +/* + * 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 <bfa_fcpim.h> +#include <defs/bfa_defs_fcpim.h> +#include <cs/bfa_wc.h> +#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__ */ + |