| Narsimhulu Musini | c8806b6 | 2015-05-29 01:04:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Cisco Systems, Inc. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you may redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License as published by |
| 6 | * the Free Software Foundation; version 2 of the License. |
| 7 | * |
| 8 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 9 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 10 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 11 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| 12 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 13 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 14 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 15 | * SOFTWARE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef __SNIC_DISC_H |
| 19 | #define __SNIC_DISC_H |
| 20 | |
| 21 | #include "snic_fwint.h" |
| 22 | |
| 23 | enum snic_disc_state { |
| 24 | SNIC_DISC_NONE, |
| 25 | SNIC_DISC_INIT, |
| 26 | SNIC_DISC_PENDING, |
| 27 | SNIC_DISC_DONE |
| 28 | }; |
| 29 | |
| 30 | struct snic; |
| 31 | struct snic_disc { |
| 32 | struct list_head tgt_list; |
| 33 | enum snic_disc_state state; |
| 34 | struct mutex mutex; |
| 35 | u16 disc_id; |
| 36 | u8 req_cnt; |
| 37 | u32 nxt_tgt_id; |
| 38 | u32 rtgt_cnt; |
| 39 | u8 *rtgt_info; |
| 40 | struct delayed_work disc_timeout; |
| 41 | void (*cb)(struct snic *); |
| 42 | }; |
| 43 | |
| 44 | #define SNIC_TGT_NAM_LEN 16 |
| 45 | |
| 46 | enum snic_tgt_state { |
| 47 | SNIC_TGT_STAT_NONE, |
| 48 | SNIC_TGT_STAT_INIT, |
| 49 | SNIC_TGT_STAT_ONLINE, /* Target is Online */ |
| 50 | SNIC_TGT_STAT_OFFLINE, /* Target is Offline */ |
| 51 | SNIC_TGT_STAT_DEL, |
| 52 | }; |
| 53 | |
| 54 | struct snic_tgt_priv { |
| 55 | struct list_head list; |
| 56 | enum snic_tgt_type typ; |
| 57 | u16 disc_id; |
| 58 | char *name[SNIC_TGT_NAM_LEN]; |
| 59 | |
| 60 | union { |
| 61 | /*DAS Target specific info */ |
| 62 | /*SAN Target specific info */ |
| 63 | u8 dummmy; |
| 64 | } u; |
| 65 | }; |
| 66 | |
| 67 | /* snic tgt flags */ |
| 68 | #define SNIC_TGT_SCAN_PENDING 0x01 |
| 69 | |
| 70 | struct snic_tgt { |
| 71 | struct list_head list; |
| 72 | u16 id; |
| 73 | u16 channel; |
| 74 | u32 flags; |
| 75 | u32 scsi_tgt_id; |
| 76 | enum snic_tgt_state state; |
| 77 | struct device dev; |
| 78 | struct work_struct scan_work; |
| 79 | struct work_struct del_work; |
| 80 | struct snic_tgt_priv tdata; |
| 81 | }; |
| 82 | |
| 83 | |
| 84 | struct snic_fw_req; |
| 85 | |
| 86 | void snic_disc_init(struct snic_disc *); |
| 87 | int snic_disc_start(struct snic *); |
| 88 | void snic_disc_term(struct snic *); |
| 89 | int snic_report_tgt_cmpl_handler(struct snic *, struct snic_fw_req *); |
| 90 | int snic_tgtinfo_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq); |
| 91 | void snic_process_report_tgts_rsp(struct work_struct *); |
| 92 | void snic_handle_tgt_disc(struct work_struct *); |
| 93 | void snic_handle_disc(struct work_struct *); |
| 94 | void snic_tgt_dev_release(struct device *); |
| 95 | void snic_tgt_del_all(struct snic *); |
| 96 | |
| 97 | #define dev_to_tgt(d) \ |
| 98 | container_of(d, struct snic_tgt, dev) |
| 99 | |
| 100 | static inline int |
| 101 | is_snic_target(struct device *dev) |
| 102 | { |
| 103 | return dev->release == snic_tgt_dev_release; |
| 104 | } |
| 105 | |
| 106 | #define starget_to_tgt(st) \ |
| 107 | (is_snic_target(((struct scsi_target *) st)->dev.parent) ? \ |
| 108 | dev_to_tgt(st->dev.parent) : NULL) |
| 109 | |
| 110 | #define snic_tgt_to_shost(t) \ |
| 111 | dev_to_shost(t->dev.parent) |
| 112 | |
| 113 | static inline int |
| 114 | snic_tgt_chkready(struct snic_tgt *tgt) |
| 115 | { |
| 116 | if (tgt->state == SNIC_TGT_STAT_ONLINE) |
| 117 | return 0; |
| 118 | else |
| 119 | return DID_NO_CONNECT << 16; |
| 120 | } |
| 121 | |
| 122 | const char *snic_tgt_state_to_str(int); |
| 123 | int snic_tgt_scsi_abort_io(struct snic_tgt *); |
| 124 | #endif /* end of __SNIC_DISC_H */ |