cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

snic_disc.h (3050B)

      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
     23enum snic_disc_state {
     24	SNIC_DISC_NONE,
     25	SNIC_DISC_INIT,
     26	SNIC_DISC_PENDING,
     27	SNIC_DISC_DONE
     28};
     29
     30struct snic;
     31struct 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
     46enum 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
     54struct 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
     70struct 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
     84struct snic_fw_req;
     85
     86void snic_disc_init(struct snic_disc *);
     87int snic_disc_start(struct snic *);
     88void snic_disc_term(struct snic *);
     89int snic_report_tgt_cmpl_handler(struct snic *, struct snic_fw_req *);
     90int snic_tgtinfo_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq);
     91void snic_process_report_tgts_rsp(struct work_struct *);
     92void snic_handle_tgt_disc(struct work_struct *);
     93void snic_handle_disc(struct work_struct *);
     94void snic_tgt_dev_release(struct device *);
     95void snic_tgt_del_all(struct snic *);
     96
     97#define dev_to_tgt(d) \
     98	container_of(d, struct snic_tgt, dev)
     99
    100static inline int
    101is_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
    113static inline int
    114snic_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
    122const char *snic_tgt_state_to_str(int);
    123int snic_tgt_scsi_abort_io(struct snic_tgt *);
    124#endif /* end of  __SNIC_DISC_H */