sys/dev/scsipi/scsipi_base.h

   1 /*      $NetBSD: scsipi_base.h,v 1.21 2006/11/16 01:33:26 christos Exp $        */
   2
   3 /*-
   4  * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _DEV_SCSIPI_SCSIPI_BASE_H_
  33 #define _DEV_SCSIPI_SCSIPI_BASE_H_
  34
  35 struct scsipi_xfer *scsipi_get_xs(struct scsipi_periph *, int);
  36 void    scsipi_put_xs(struct scsipi_xfer *);
  37
  38 static __inline struct scsipi_xfer *scsipi_make_xs(struct scsipi_periph *,
  39             struct scsipi_generic *, int cmdlen, u_char *data_addr,
  40             int datalen, int retries, int timeout, struct buf *,
  41             int flags) __unused;
  42
  43 /*
  44  * Make a scsipi_xfer, and return a pointer to it.
  45  */
  46
  47 static __inline struct scsipi_xfer *
  48 scsipi_make_xs(struct scsipi_periph *periph, struct scsipi_generic *cmd,
  49     int cmdlen, u_char *data_addr, int datalen, int retries, int timeout,
  50     struct buf *bp, int flags)
  51 {
  52         struct scsipi_xfer *xs;
  53
  54         if ((xs = scsipi_get_xs(periph, flags)) == NULL)
  55                 return (NULL);
  56
  57         /*
  58          * Fill out the scsipi_xfer structure.  We don't know whose context
  59          * the cmd is in, so copy it.
  60          */
  61         memcpy(&xs->cmdstore, cmd, cmdlen);
  62         xs->cmd = &xs->cmdstore;
  63         xs->cmdlen = cmdlen;
  64         xs->data = data_addr;
  65         xs->datalen = datalen;
  66         xs->xs_retries = retries;
  67         xs->timeout = timeout;
  68         xs->bp = bp;
  69
  70         return (xs);
  71 }
  72
  73 #endif /* _DEV_SCSIPI_SCSIPI_BASE_H_ */