summaryrefslogtreecommitdiff
path: root/drivers/scsi/bfa/bfa_fcpim_priv.h
blob: 5cf418460f75015474274ee8584a6ca67a66dc38 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
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__ */