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scsipi_base.h revision 1.9.10.1 
      1 /*	$NetBSD: scsipi_base.h,v 1.9.10.1 1999/10/19 17:39:36 thorpej Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 int	scsipi_get_resource __P((struct scsipi_channel *));
     40 int	scsipi_grow_resources __P((struct scsipi_channel *));
     41 void	scsipi_put_resource __P((struct scsipi_channel *));
     42 
     43 struct scsipi_xfer *scsipi_get_xs __P((struct scsipi_periph *, int));
     44 void	scsipi_put_xs __P((struct scsipi_xfer *));
     45 
     46 static __inline struct scsipi_xfer *scsipi_make_xs __P((struct scsipi_periph *,
     47 	    struct scsipi_generic *, int cmdlen, u_char *data_addr,
     48 	    int datalen, int retries, int timeout, struct buf *,
     49 	    int flags)) __attribute__ ((__unused__));
     50 
     51 /*
     52  * Make a scsipi_xfer, and return a pointer to it.
     53  */
     54 
     55 static __inline struct scsipi_xfer *
     56 scsipi_make_xs(periph, scsipi_cmd, cmdlen, data_addr, datalen,
     57     retries, timeout, bp, flags)
     58 	struct scsipi_periph *periph;
     59 	struct scsipi_generic *scsipi_cmd;
     60 	int cmdlen;
     61 	u_char *data_addr;
     62 	int datalen;
     63 	int retries;
     64 	int timeout;
     65 	struct buf *bp;
     66 	int flags;
     67 {
     68 	struct scsipi_xfer *xs;
     69 
     70 	if ((xs = scsipi_get_xs(periph, flags)) == NULL)
     71 		return (NULL);
     72 
     73 	/*
     74 	 * Fill out the scsipi_xfer structure.  We don't know whose context
     75 	 * the cmd is in, so copy it.
     76 	 */
     77 	bcopy(scsipi_cmd, &xs->cmdstore, cmdlen);
     78 	xs->cmd = &xs->cmdstore;
     79 	xs->cmdlen = cmdlen;
     80 	xs->data = data_addr;
     81 	xs->datalen = datalen;
     82 	xs->xs_retries = retries;
     83 	xs->timeout = timeout;
     84 	xs->bp = bp;
     85 
     86 	return (xs);
     87 }
     88