c8806b6c9e
Cisco has developed a new PCI HBA interface called sNIC, which stands for SCSI NIC. This is a new storage feature supported on specialized network adapter. The new PCI function provides a uniform host interface and abstracts backend storage. [jejb: fix up checkpatch errors] Signed-off-by: Narsimhulu Musini <nmusini@cisco.com> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
125 lines
3.0 KiB
C
125 lines
3.0 KiB
C
/*
|
|
* 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 */
|