snic_disc.h

  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 */