diff options
author | 2016-04-11 10:41:07 +0300 | |
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committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/scsi/snic/snic_disc.h | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/scsi/snic/snic_disc.h')
-rw-r--r-- | kernel/drivers/scsi/snic/snic_disc.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/kernel/drivers/scsi/snic/snic_disc.h b/kernel/drivers/scsi/snic/snic_disc.h new file mode 100644 index 000000000..97fa3f5c5 --- /dev/null +++ b/kernel/drivers/scsi/snic/snic_disc.h @@ -0,0 +1,124 @@ +/* + * Copyright 2014 Cisco Systems, Inc. All rights reserved. + * + * This program is free software; you may redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#ifndef __SNIC_DISC_H +#define __SNIC_DISC_H + +#include "snic_fwint.h" + +enum snic_disc_state { + SNIC_DISC_NONE, + SNIC_DISC_INIT, + SNIC_DISC_PENDING, + SNIC_DISC_DONE +}; + +struct snic; +struct snic_disc { + struct list_head tgt_list; + enum snic_disc_state state; + struct mutex mutex; + u16 disc_id; + u8 req_cnt; + u32 nxt_tgt_id; + u32 rtgt_cnt; + u8 *rtgt_info; + struct delayed_work disc_timeout; + void (*cb)(struct snic *); +}; + +#define SNIC_TGT_NAM_LEN 16 + +enum snic_tgt_state { + SNIC_TGT_STAT_NONE, + SNIC_TGT_STAT_INIT, + SNIC_TGT_STAT_ONLINE, /* Target is Online */ + SNIC_TGT_STAT_OFFLINE, /* Target is Offline */ + SNIC_TGT_STAT_DEL, +}; + +struct snic_tgt_priv { + struct list_head list; + enum snic_tgt_type typ; + u16 disc_id; + char *name[SNIC_TGT_NAM_LEN]; + + union { + /*DAS Target specific info */ + /*SAN Target specific info */ + u8 dummmy; + } u; +}; + +/* snic tgt flags */ +#define SNIC_TGT_SCAN_PENDING 0x01 + +struct snic_tgt { + struct list_head list; + u16 id; + u16 channel; + u32 flags; + u32 scsi_tgt_id; + enum snic_tgt_state state; + struct device dev; + struct work_struct scan_work; + struct work_struct del_work; + struct snic_tgt_priv tdata; +}; + + +struct snic_fw_req; + +void snic_disc_init(struct snic_disc *); +int snic_disc_start(struct snic *); +void snic_disc_term(struct snic *); +int snic_report_tgt_cmpl_handler(struct snic *, struct snic_fw_req *); +int snic_tgtinfo_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq); +void snic_process_report_tgts_rsp(struct work_struct *); +void snic_handle_tgt_disc(struct work_struct *); +void snic_handle_disc(struct work_struct *); +void snic_tgt_dev_release(struct device *); +void snic_tgt_del_all(struct snic *); + +#define dev_to_tgt(d) \ + container_of(d, struct snic_tgt, dev) + +static inline int +is_snic_target(struct device *dev) +{ + return dev->release == snic_tgt_dev_release; +} + +#define starget_to_tgt(st) \ + (is_snic_target(((struct scsi_target *) st)->dev.parent) ? \ + dev_to_tgt(st->dev.parent) : NULL) + +#define snic_tgt_to_shost(t) \ + dev_to_shost(t->dev.parent) + +static inline int +snic_tgt_chkready(struct snic_tgt *tgt) +{ + if (tgt->state == SNIC_TGT_STAT_ONLINE) + return 0; + else + return DID_NO_CONNECT << 16; +} + +const char *snic_tgt_state_to_str(int); +int snic_tgt_scsi_abort_io(struct snic_tgt *); +#endif /* end of __SNIC_DISC_H */ |