drivers/scsi/bfa/include/bfa_svc.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_SVC_H__
#define __BFA_SVC_H__

/*
 * forward declarations
 */
struct bfa_fcxp_s;

#include <defs/bfa_defs_status.h>
#include <defs/bfa_defs_pport.h>
#include <defs/bfa_defs_rport.h>
#include <defs/bfa_defs_qos.h>
#include <cs/bfa_sm.h>
#include <bfa.h>

/**
 * 		BFA rport information.
 */
struct bfa_rport_info_s {
	u16        max_frmsz;	/*  max rcv pdu size               */
	u32        pid : 24,	/*  remote port ID                 */
			lp_tag : 8;
	u32        local_pid : 24,	/*  local port ID		    */
			cisc : 8;	/*  CIRO supported		    */
	u8         fc_class;	/*  supported FC classes. enum fc_cos */
	u8         vf_en;		/*  virtual fabric enable          */
	u16        vf_id;		/*  virtual fabric ID              */
	enum bfa_pport_speed speed;	/*  Rport's current speed	    */
};

/**
 * BFA rport data structure
 */
struct bfa_rport_s {
	struct list_head        qe;	  /*  queue element */
	bfa_sm_t	      sm; 	  /*  state machine */
	struct bfa_s          *bfa;	  /*  backpointer to BFA */
	void                  *rport_drv; /*  fcs/driver rport object */
	u16              fw_handle; /*  firmware rport handle */
	u16              rport_tag; /*  BFA rport tag */
	struct bfa_rport_info_s rport_info; /*  rport info from *fcs/driver */
	struct bfa_reqq_wait_s reqq_wait; /*  to wait for room in reqq */
	struct bfa_cb_qe_s    hcb_qe;	 /*  BFA callback qelem */
	struct bfa_rport_hal_stats_s stats; /*  BFA rport statistics  */
	struct bfa_rport_qos_attr_s  qos_attr;
	union a {
		bfa_status_t    status;	 /*  f/w status */
		void            *fw_msg; /*  QoS scn event */
	} event_arg;
};
#define BFA_RPORT_FC_COS(_rport)	((_rport)->rport_info.fc_class)

/**
 * Send completion callback.
 */
typedef void (*bfa_cb_fcxp_send_t) (void *bfad_fcxp, struct bfa_fcxp_s *fcxp,
			void *cbarg, enum bfa_status req_status,
			u32 rsp_len, u32 resid_len,
			struct fchs_s *rsp_fchs);

/**
 * BFA fcxp allocation (asynchronous)
 */
typedef void (*bfa_fcxp_alloc_cbfn_t) (void *cbarg, struct bfa_fcxp_s *fcxp);

struct bfa_fcxp_wqe_s {
	struct list_head         qe;
	bfa_fcxp_alloc_cbfn_t  alloc_cbfn;
	void           *alloc_cbarg;
};

typedef u64 (*bfa_fcxp_get_sgaddr_t) (void *bfad_fcxp, int sgeid);
typedef u32 (*bfa_fcxp_get_sglen_t) (void *bfad_fcxp, int sgeid);

#define BFA_UF_BUFSZ	(2 * 1024 + 256)

/**
 * @todo private
 */
struct bfa_uf_buf_s {
	u8         d[BFA_UF_BUFSZ];
};


struct bfa_uf_s {
	struct list_head	qe;		/*  queue element	  */
	struct bfa_s	*bfa;		/*  bfa instance	  */
	u16        uf_tag;		/*  identifying tag f/w messages */
	u16        vf_id;
	u16        src_rport_handle;
	u16        rsvd;
	u8        	*data_ptr;
	u16        data_len;	/*  actual receive length	  */
	u16        pb_len;		/*  posted buffer length	  */
	void           	*buf_kva;	/*  buffer virtual address	  */
	u64        buf_pa;		/*  buffer physical address	  */
	struct bfa_cb_qe_s    hcb_qe;	/*  comp: BFA comp qelem	  */
	struct bfa_sge_s   	sges[BFI_SGE_INLINE_MAX];
};

typedef void (*bfa_cb_pport_t) (void *cbarg, enum bfa_status status);

/**
 * bfa lport login/logout service interface
 */
struct bfa_lps_s {
	struct list_head	qe;		/*  queue element */
	struct bfa_s	*bfa;		/*  parent bfa instance	*/
	bfa_sm_t	sm;		/*  finite state machine	*/
	u8		lp_tag;		/*  lport tag			*/
	u8		reqq;		/*  lport request queue	*/
	u8		alpa;		/*  ALPA for loop topologies	*/
	u32	lp_pid;		/*  lport port ID		*/
	bfa_boolean_t	fdisc;		/*  send FDISC instead of FLOGI*/
	bfa_boolean_t	auth_en;	/*  enable authentication	*/
	bfa_boolean_t	auth_req;	/*  authentication required	*/
	bfa_boolean_t	npiv_en;	/*  NPIV is allowed by peer	*/
	bfa_boolean_t	fport;		/*  attached peer is F_PORT	*/
	bfa_boolean_t	brcd_switch;/*  attached peer is brcd switch	*/
	bfa_status_t	status;		/*  login status		*/
	u16	pdusz;		/*  max receive PDU size 	*/
	u16	pr_bbcred;	/*  BB_CREDIT from peer 	*/
	u8		lsrjt_rsn;	/*  LSRJT reason		*/
	u8		lsrjt_expl;	/*  LSRJT explanation		*/
	wwn_t		pwwn;		/*  port wwn of lport		*/
	wwn_t		nwwn;		/*  node wwn of lport		*/
	wwn_t		pr_pwwn;	/*  port wwn of lport peer	*/
	wwn_t		pr_nwwn;	/*  node wwn of lport peer	*/
	mac_t		lp_mac;		/*  fpma/spma MAC for lport	*/
	mac_t		fcf_mac;	/*  FCF MAC of lport		*/
	struct bfa_reqq_wait_s	wqe;	/*  request wait queue element	*/
	void		*uarg;		/*  user callback arg		*/
	struct bfa_cb_qe_s hcb_qe;	/*  comp: callback qelem	*/
	struct bfi_lps_login_rsp_s *loginrsp;
	bfa_eproto_status_t	ext_status;
};

/*
 * bfa pport API functions
 */
bfa_status_t bfa_pport_enable(struct bfa_s *bfa);
bfa_status_t bfa_pport_disable(struct bfa_s *bfa);
bfa_status_t bfa_pport_cfg_speed(struct bfa_s *bfa,
			enum bfa_pport_speed speed);
enum bfa_pport_speed bfa_pport_get_speed(struct bfa_s *bfa);
bfa_status_t bfa_pport_cfg_topology(struct bfa_s *bfa,
			enum bfa_pport_topology topo);
enum bfa_pport_topology bfa_pport_get_topology(struct bfa_s *bfa);
bfa_status_t bfa_pport_cfg_hardalpa(struct bfa_s *bfa, u8 alpa);
bfa_boolean_t bfa_pport_get_hardalpa(struct bfa_s *bfa, u8 *alpa);
u8 bfa_pport_get_myalpa(struct bfa_s *bfa);
bfa_status_t bfa_pport_clr_hardalpa(struct bfa_s *bfa);
bfa_status_t bfa_pport_cfg_maxfrsize(struct bfa_s *bfa, u16 maxsize);
u16 bfa_pport_get_maxfrsize(struct bfa_s *bfa);
u32 bfa_pport_mypid(struct bfa_s *bfa);
u8 bfa_pport_get_rx_bbcredit(struct bfa_s *bfa);
bfa_status_t bfa_pport_trunk_enable(struct bfa_s *bfa, u8 bitmap);
bfa_status_t bfa_pport_trunk_disable(struct bfa_s *bfa);
bfa_boolean_t bfa_pport_trunk_query(struct bfa_s *bfa, u32 *bitmap);
void bfa_pport_get_attr(struct bfa_s *bfa, struct bfa_pport_attr_s *attr);
wwn_t bfa_pport_get_wwn(struct bfa_s *bfa, bfa_boolean_t node);
bfa_status_t bfa_pport_get_stats(struct bfa_s *bfa,
			union bfa_pport_stats_u *stats,
			bfa_cb_pport_t cbfn, void *cbarg);
bfa_status_t bfa_pport_clear_stats(struct bfa_s *bfa, bfa_cb_pport_t cbfn,
			void *cbarg);
void bfa_pport_event_register(struct bfa_s *bfa,
			void (*event_cbfn) (void *cbarg,
			bfa_pport_event_t event), void *event_cbarg);
bfa_boolean_t bfa_pport_is_disabled(struct bfa_s *bfa);
void bfa_pport_cfg_qos(struct bfa_s *bfa, bfa_boolean_t on_off);
void bfa_pport_cfg_ratelim(struct bfa_s *bfa, bfa_boolean_t on_off);
bfa_status_t bfa_pport_cfg_ratelim_speed(struct bfa_s *bfa,
			enum bfa_pport_speed speed);
enum bfa_pport_speed bfa_pport_get_ratelim_speed(struct bfa_s *bfa);

void bfa_pport_set_tx_bbcredit(struct bfa_s *bfa, u16 tx_bbcredit);
void bfa_pport_busy(struct bfa_s *bfa, bfa_boolean_t status);
void bfa_pport_beacon(struct bfa_s *bfa, bfa_boolean_t beacon,
			bfa_boolean_t link_e2e_beacon);
void bfa_cb_pport_event(void *cbarg, bfa_pport_event_t event);
void bfa_pport_qos_get_attr(struct bfa_s *bfa, struct bfa_qos_attr_s *qos_attr);
void bfa_pport_qos_get_vc_attr(struct bfa_s *bfa,
			struct bfa_qos_vc_attr_s *qos_vc_attr);
bfa_status_t bfa_pport_get_qos_stats(struct bfa_s *bfa,
			union bfa_pport_stats_u *stats,
			bfa_cb_pport_t cbfn, void *cbarg);
bfa_status_t bfa_pport_clear_qos_stats(struct bfa_s *bfa, bfa_cb_pport_t cbfn,
			void *cbarg);
bfa_boolean_t     bfa_pport_is_ratelim(struct bfa_s *bfa);
bfa_boolean_t	bfa_pport_is_linkup(struct bfa_s *bfa);

/*
 * bfa rport API functions
 */
struct bfa_rport_s *bfa_rport_create(struct bfa_s *bfa, void *rport_drv);
void bfa_rport_delete(struct bfa_rport_s *rport);
void bfa_rport_online(struct bfa_rport_s *rport,
			struct bfa_rport_info_s *rport_info);
void bfa_rport_offline(struct bfa_rport_s *rport);
void bfa_rport_speed(struct bfa_rport_s *rport, enum bfa_pport_speed speed);
void bfa_rport_get_stats(struct bfa_rport_s *rport,
			struct bfa_rport_hal_stats_s *stats);
void bfa_rport_clear_stats(struct bfa_rport_s *rport);
void bfa_cb_rport_online(void *rport);
void bfa_cb_rport_offline(void *rport);
void bfa_cb_rport_qos_scn_flowid(void *rport,
			struct bfa_rport_qos_attr_s old_qos_attr,
			struct bfa_rport_qos_attr_s new_qos_attr);
void bfa_cb_rport_qos_scn_prio(void *rport,
			struct bfa_rport_qos_attr_s old_qos_attr,
			struct bfa_rport_qos_attr_s new_qos_attr);
void bfa_rport_get_qos_attr(struct bfa_rport_s *rport,
			struct bfa_rport_qos_attr_s *qos_attr);

/*
 * bfa fcxp API functions
 */
struct bfa_fcxp_s *bfa_fcxp_alloc(void *bfad_fcxp, struct bfa_s *bfa,
			int nreq_sgles, int nrsp_sgles,
			bfa_fcxp_get_sgaddr_t get_req_sga,
			bfa_fcxp_get_sglen_t get_req_sglen,
			bfa_fcxp_get_sgaddr_t get_rsp_sga,
			bfa_fcxp_get_sglen_t get_rsp_sglen);
void bfa_fcxp_alloc_wait(struct bfa_s *bfa, struct bfa_fcxp_wqe_s *wqe,
			bfa_fcxp_alloc_cbfn_t alloc_cbfn, void *cbarg);
void bfa_fcxp_walloc_cancel(struct bfa_s *bfa,
			struct bfa_fcxp_wqe_s *wqe);
void bfa_fcxp_discard(struct bfa_fcxp_s *fcxp);

void *bfa_fcxp_get_reqbuf(struct bfa_fcxp_s *fcxp);
void *bfa_fcxp_get_rspbuf(struct bfa_fcxp_s *fcxp);

void bfa_fcxp_free(struct bfa_fcxp_s *fcxp);

void bfa_fcxp_send(struct bfa_fcxp_s *fcxp,
			struct bfa_rport_s *rport, u16 vf_id, u8 lp_tag,
			bfa_boolean_t cts, enum fc_cos cos,
			u32 reqlen, struct fchs_s *fchs,
			bfa_cb_fcxp_send_t cbfn,
			void *cbarg,
			u32 rsp_maxlen, u8 rsp_timeout);
bfa_status_t bfa_fcxp_abort(struct bfa_fcxp_s *fcxp);
u32        bfa_fcxp_get_reqbufsz(struct bfa_fcxp_s *fcxp);
u32	bfa_fcxp_get_maxrsp(struct bfa_s *bfa);

static inline void *
bfa_uf_get_frmbuf(struct bfa_uf_s *uf)
{
	return uf->data_ptr;
}

static inline   u16
bfa_uf_get_frmlen(struct bfa_uf_s *uf)
{
	return uf->data_len;
}

/**
 *      Callback prototype for unsolicited frame receive handler.
 *
 * @param[in]           cbarg           callback arg for receive handler
 * @param[in]           uf              unsolicited frame descriptor
 *
 * @return None
 */
typedef void (*bfa_cb_uf_recv_t) (void *cbarg, struct bfa_uf_s *uf);

/*
 * bfa uf API functions
 */
void bfa_uf_recv_register(struct bfa_s *bfa, bfa_cb_uf_recv_t ufrecv,
			void *cbarg);
void bfa_uf_free(struct bfa_uf_s *uf);

/**
 * bfa lport service api
 */

struct bfa_lps_s *bfa_lps_alloc(struct bfa_s *bfa);
void bfa_lps_delete(struct bfa_lps_s *lps);
void bfa_lps_discard(struct bfa_lps_s *lps);
void bfa_lps_flogi(struct bfa_lps_s *lps, void *uarg, u8 alpa, u16 pdusz,
		   wwn_t pwwn, wwn_t nwwn, bfa_boolean_t auth_en);
void bfa_lps_fdisc(struct bfa_lps_s *lps, void *uarg, u16 pdusz, wwn_t pwwn,
		   wwn_t nwwn);
void bfa_lps_flogo(struct bfa_lps_s *lps);
void bfa_lps_fdisclogo(struct bfa_lps_s *lps);
u8 bfa_lps_get_tag(struct bfa_lps_s *lps);
bfa_boolean_t bfa_lps_is_npiv_en(struct bfa_lps_s *lps);
bfa_boolean_t bfa_lps_is_fport(struct bfa_lps_s *lps);
bfa_boolean_t bfa_lps_is_brcd_fabric(struct bfa_lps_s *lps);
bfa_boolean_t bfa_lps_is_authreq(struct bfa_lps_s *lps);
bfa_eproto_status_t bfa_lps_get_extstatus(struct bfa_lps_s *lps);
u32 bfa_lps_get_pid(struct bfa_lps_s *lps);
u8 bfa_lps_get_tag_from_pid(struct bfa_s *bfa, u32 pid);
u16 bfa_lps_get_peer_bbcredit(struct bfa_lps_s *lps);
wwn_t bfa_lps_get_peer_pwwn(struct bfa_lps_s *lps);
wwn_t bfa_lps_get_peer_nwwn(struct bfa_lps_s *lps);
u8 bfa_lps_get_lsrjt_rsn(struct bfa_lps_s *lps);
u8 bfa_lps_get_lsrjt_expl(struct bfa_lps_s *lps);
void bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status);
void bfa_cb_lps_flogo_comp(void *bfad, void *uarg);
void bfa_cb_lps_fdisc_comp(void *bfad, void *uarg, bfa_status_t status);
void bfa_cb_lps_fdisclogo_comp(void *bfad, void *uarg);

#endif /* __BFA_SVC_H__ */