drivers/scsi/bfa/bfa_fcpim_priv.h - kernel/skids - Git at Google

 /*
  * 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__ */
	/*
	* 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__ */