1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright 2014 Cisco Systems, Inc. All rights reserved.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * This program is free software; you may redistribute it and/or modify
5*4882a593Smuzhiyun * it under the terms of the GNU General Public License as published by
6*4882a593Smuzhiyun * the Free Software Foundation; version 2 of the License.
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
9*4882a593Smuzhiyun * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
10*4882a593Smuzhiyun * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
11*4882a593Smuzhiyun * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
12*4882a593Smuzhiyun * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
13*4882a593Smuzhiyun * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
14*4882a593Smuzhiyun * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
15*4882a593Smuzhiyun * SOFTWARE.
16*4882a593Smuzhiyun */
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #ifndef __SNIC_DISC_H
19*4882a593Smuzhiyun #define __SNIC_DISC_H
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #include "snic_fwint.h"
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun enum snic_disc_state {
24*4882a593Smuzhiyun SNIC_DISC_NONE,
25*4882a593Smuzhiyun SNIC_DISC_INIT,
26*4882a593Smuzhiyun SNIC_DISC_PENDING,
27*4882a593Smuzhiyun SNIC_DISC_DONE
28*4882a593Smuzhiyun };
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun struct snic;
31*4882a593Smuzhiyun struct snic_disc {
32*4882a593Smuzhiyun struct list_head tgt_list;
33*4882a593Smuzhiyun enum snic_disc_state state;
34*4882a593Smuzhiyun struct mutex mutex;
35*4882a593Smuzhiyun u16 disc_id;
36*4882a593Smuzhiyun u8 req_cnt;
37*4882a593Smuzhiyun u32 nxt_tgt_id;
38*4882a593Smuzhiyun u32 rtgt_cnt;
39*4882a593Smuzhiyun u8 *rtgt_info;
40*4882a593Smuzhiyun struct delayed_work disc_timeout;
41*4882a593Smuzhiyun void (*cb)(struct snic *);
42*4882a593Smuzhiyun };
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun #define SNIC_TGT_NAM_LEN 16
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun enum snic_tgt_state {
47*4882a593Smuzhiyun SNIC_TGT_STAT_NONE,
48*4882a593Smuzhiyun SNIC_TGT_STAT_INIT,
49*4882a593Smuzhiyun SNIC_TGT_STAT_ONLINE, /* Target is Online */
50*4882a593Smuzhiyun SNIC_TGT_STAT_OFFLINE, /* Target is Offline */
51*4882a593Smuzhiyun SNIC_TGT_STAT_DEL,
52*4882a593Smuzhiyun };
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun struct snic_tgt_priv {
55*4882a593Smuzhiyun struct list_head list;
56*4882a593Smuzhiyun enum snic_tgt_type typ;
57*4882a593Smuzhiyun u16 disc_id;
58*4882a593Smuzhiyun char *name[SNIC_TGT_NAM_LEN];
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun union {
61*4882a593Smuzhiyun /*DAS Target specific info */
62*4882a593Smuzhiyun /*SAN Target specific info */
63*4882a593Smuzhiyun u8 dummmy;
64*4882a593Smuzhiyun } u;
65*4882a593Smuzhiyun };
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun /* snic tgt flags */
68*4882a593Smuzhiyun #define SNIC_TGT_SCAN_PENDING 0x01
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun struct snic_tgt {
71*4882a593Smuzhiyun struct list_head list;
72*4882a593Smuzhiyun u16 id;
73*4882a593Smuzhiyun u16 channel;
74*4882a593Smuzhiyun u32 flags;
75*4882a593Smuzhiyun u32 scsi_tgt_id;
76*4882a593Smuzhiyun enum snic_tgt_state state;
77*4882a593Smuzhiyun struct device dev;
78*4882a593Smuzhiyun struct work_struct scan_work;
79*4882a593Smuzhiyun struct work_struct del_work;
80*4882a593Smuzhiyun struct snic_tgt_priv tdata;
81*4882a593Smuzhiyun };
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun struct snic_fw_req;
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun void snic_disc_init(struct snic_disc *);
87*4882a593Smuzhiyun int snic_disc_start(struct snic *);
88*4882a593Smuzhiyun void snic_disc_term(struct snic *);
89*4882a593Smuzhiyun int snic_report_tgt_cmpl_handler(struct snic *, struct snic_fw_req *);
90*4882a593Smuzhiyun int snic_tgtinfo_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq);
91*4882a593Smuzhiyun void snic_process_report_tgts_rsp(struct work_struct *);
92*4882a593Smuzhiyun void snic_handle_tgt_disc(struct work_struct *);
93*4882a593Smuzhiyun void snic_handle_disc(struct work_struct *);
94*4882a593Smuzhiyun void snic_tgt_dev_release(struct device *);
95*4882a593Smuzhiyun void snic_tgt_del_all(struct snic *);
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun #define dev_to_tgt(d) \
98*4882a593Smuzhiyun container_of(d, struct snic_tgt, dev)
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun static inline int
is_snic_target(struct device * dev)101*4882a593Smuzhiyun is_snic_target(struct device *dev)
102*4882a593Smuzhiyun {
103*4882a593Smuzhiyun return dev->release == snic_tgt_dev_release;
104*4882a593Smuzhiyun }
105*4882a593Smuzhiyun
106*4882a593Smuzhiyun #define starget_to_tgt(st) \
107*4882a593Smuzhiyun (is_snic_target(((struct scsi_target *) st)->dev.parent) ? \
108*4882a593Smuzhiyun dev_to_tgt(st->dev.parent) : NULL)
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun #define snic_tgt_to_shost(t) \
111*4882a593Smuzhiyun dev_to_shost(t->dev.parent)
112*4882a593Smuzhiyun
113*4882a593Smuzhiyun static inline int
snic_tgt_chkready(struct snic_tgt * tgt)114*4882a593Smuzhiyun snic_tgt_chkready(struct snic_tgt *tgt)
115*4882a593Smuzhiyun {
116*4882a593Smuzhiyun if (tgt->state == SNIC_TGT_STAT_ONLINE)
117*4882a593Smuzhiyun return 0;
118*4882a593Smuzhiyun else
119*4882a593Smuzhiyun return DID_NO_CONNECT << 16;
120*4882a593Smuzhiyun }
121*4882a593Smuzhiyun
122*4882a593Smuzhiyun const char *snic_tgt_state_to_str(int);
123*4882a593Smuzhiyun int snic_tgt_scsi_abort_io(struct snic_tgt *);
124*4882a593Smuzhiyun #endif /* end of __SNIC_DISC_H */
125