usr/src/uts/common/sys/scsi/scsi_watch.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_SCSI_SCSI_WATCH_H
  27 #define _SYS_SCSI_SCSI_WATCH_H
  28
  29 #ifdef  __cplusplus
  30 extern "C" {
  31 #endif
  32
  33 struct scsi_watch_result {
  34         struct scsi_status              *statusp;
  35         struct scsi_extended_sense      *sensep;
  36         uchar_t                         actual_sense_length;
  37         struct scsi_pkt                 *pkt;
  38 };
  39
  40 /*
  41  * 120 seconds is a *very* reasonable amount of time for most slow devices
  42  */
  43 #define SCSI_WATCH_IO_TIME      120
  44
  45 /*
  46  * values to pass in "flags" arg for scsi_watch_request_terminate()
  47  */
  48 #define SCSI_WATCH_TERMINATE_WAIT       0x0
  49 #define SCSI_WATCH_TERMINATE_NOWAIT     0x1
  50 #define SCSI_WATCH_TERMINATE_ALL_WAIT   0x2
  51
  52 #define SCSI_WATCH_TERMINATE_SUCCESS    0x0
  53 #define SCSI_WATCH_TERMINATE_FAIL       0x1
  54
  55 void    scsi_watch_init();
  56 void    scsi_watch_fini();
  57 opaque_t scsi_watch_request_submit(struct scsi_device *devp,
  58             int interval, int sense_length,
  59             int (*callback)(), caddr_t cb_arg);
  60 int     scsi_watch_request_terminate(opaque_t token, int flags);
  61 int     scsi_watch_get_ref_count(opaque_t token);
  62 void    scsi_watch_resume(opaque_t token);
  63 void    scsi_watch_suspend(opaque_t token);
  64
  65 #ifdef  __cplusplus
  66 }
  67 #endif
  68
  69 #endif  /* _SYS_SCSI_SCSI_WATCH_H */