1/* SPDX-License-Identifier: GPL-2.0-only */
2/* Copyright 2014 Cisco Systems, Inc.  All rights reserved. */
3
4#ifndef __SNIC_DISC_H
5#define __SNIC_DISC_H
6
7#include "snic_fwint.h"
8
9enum snic_disc_state {
10	SNIC_DISC_NONE,
11	SNIC_DISC_INIT,
12	SNIC_DISC_PENDING,
13	SNIC_DISC_DONE
14};
15
16struct snic;
17struct snic_disc {
18	struct list_head tgt_list;
19	enum snic_disc_state state;
20	struct mutex mutex;
21	u16	disc_id;
22	u8	req_cnt;
23	u32	nxt_tgt_id;
24	u32	rtgt_cnt;
25	u8	*rtgt_info;
26	struct delayed_work disc_timeout;
27	void (*cb)(struct snic *);
28};
29
30#define SNIC_TGT_NAM_LEN	16
31
32enum snic_tgt_state {
33	SNIC_TGT_STAT_NONE,
34	SNIC_TGT_STAT_INIT,
35	SNIC_TGT_STAT_ONLINE,	/* Target is Online */
36	SNIC_TGT_STAT_OFFLINE,	/* Target is Offline */
37	SNIC_TGT_STAT_DEL,
38};
39
40struct snic_tgt_priv {
41	struct list_head list;
42	enum snic_tgt_type typ;
43	u16 disc_id;
44	char *name[SNIC_TGT_NAM_LEN];
45
46	union {
47		/*DAS Target specific info */
48		/*SAN Target specific info */
49		u8 dummmy;
50	} u;
51};
52
53/* snic tgt flags */
54#define SNIC_TGT_SCAN_PENDING	0x01
55
56struct snic_tgt {
57	struct list_head list;
58	u16	id;
59	u16	channel;
60	u32	flags;
61	u32	scsi_tgt_id;
62	enum snic_tgt_state state;
63	struct device dev;
64	struct work_struct scan_work;
65	struct work_struct del_work;
66	struct snic_tgt_priv tdata;
67};
68
69
70struct snic_fw_req;
71
72void snic_disc_init(struct snic_disc *);
73int snic_disc_start(struct snic *);
74void snic_disc_term(struct snic *);
75int snic_report_tgt_cmpl_handler(struct snic *, struct snic_fw_req *);
76int snic_tgtinfo_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq);
77void snic_process_report_tgts_rsp(struct work_struct *);
78void snic_handle_tgt_disc(struct work_struct *);
79void snic_handle_disc(struct work_struct *);
80void snic_tgt_dev_release(struct device *);
81void snic_tgt_del_all(struct snic *);
82
83#define dev_to_tgt(d) \
84	container_of(d, struct snic_tgt, dev)
85
86static inline int
87is_snic_target(struct device *dev)
88{
89	return dev->release == snic_tgt_dev_release;
90}
91
92#define starget_to_tgt(st)	\
93	(is_snic_target(((struct scsi_target *) st)->dev.parent) ? \
94		dev_to_tgt(st->dev.parent) : NULL)
95
96#define snic_tgt_to_shost(t)	\
97	dev_to_shost(t->dev.parent)
98
99static inline int
100snic_tgt_chkready(struct snic_tgt *tgt)
101{
102	if (tgt->state == SNIC_TGT_STAT_ONLINE)
103		return 0;
104	else
105		return DID_NO_CONNECT << 16;
106}
107
108const char *snic_tgt_state_to_str(int);
109int snic_tgt_scsi_abort_io(struct snic_tgt *);
110#endif /* end of  __SNIC_DISC_H */
111