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 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 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