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
9 enum snic_disc_state {
10 SNIC_DISC_NONE,
11 SNIC_DISC_INIT,
12 SNIC_DISC_PENDING,
13 SNIC_DISC_DONE
14 };
15
16 struct snic;
17 struct 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
32 enum 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
40 struct 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
56 struct 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
70 struct snic_fw_req;
71
72 void snic_disc_init(struct snic_disc *);
73 int snic_disc_start(struct snic *);
74 void snic_disc_term(struct snic *);
75 int snic_report_tgt_cmpl_handler(struct snic *, struct snic_fw_req *);
76 int snic_tgtinfo_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq);
77 void snic_process_report_tgts_rsp(struct work_struct *);
78 void snic_handle_tgt_disc(struct work_struct *);
79 void snic_handle_disc(struct work_struct *);
80 void snic_tgt_dev_release(struct device *);
81 void snic_tgt_del_all(struct snic *);
82
83 #define dev_to_tgt(d) \
84 container_of(d, struct snic_tgt, dev)
85
86 static inline int
is_snic_target(struct device * dev)87 is_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
99 static inline int
snic_tgt_chkready(struct snic_tgt * tgt)100 snic_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
108 const char *snic_tgt_state_to_str(int);
109 int snic_tgt_scsi_abort_io(struct snic_tgt *);
110 #endif /* end of __SNIC_DISC_H */
111