NetBSD/sys/dev/scsipi/scsipi_base.h

95 lines
3.3 KiB
C

/* $NetBSD: scsipi_base.h,v 1.4 1997/10/01 01:19:08 enami Exp $ */
/*
* Copyright (c) 1994, 1995, 1997 Charles M. Hannum. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Charles M. Hannum.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Originally written by Julian Elischer (julian@dialix.oz.au)
*/
extern LIST_HEAD(xs_free_list, scsipi_xfer) xs_free_list;
struct scsipi_xfer *scsipi_get_xs __P((struct scsipi_link *, int));
void scsipi_free_xs __P((struct scsipi_xfer *, int));
static __inline struct scsipi_xfer *scsipi_make_xs __P((struct scsipi_link *,
struct scsipi_generic *, int cmdlen, u_char *data_addr,
int datalen, int retries, int timeout, struct buf *,
int flags)) __attribute__ ((unused));
/*
* Make a scsipi_xfer, and return a pointer to it.
*/
static __inline struct scsipi_xfer *
scsipi_make_xs(sc_link, scsipi_cmd, cmdlen, data_addr, datalen,
retries, timeout, bp, flags)
struct scsipi_link *sc_link;
struct scsipi_generic *scsipi_cmd;
int cmdlen;
u_char *data_addr;
int datalen;
int retries;
int timeout;
struct buf *bp;
int flags;
{
struct scsipi_xfer *xs;
if ((xs = scsipi_get_xs(sc_link, flags)) == NULL)
return (NULL);
/*
* Fill out the scsipi_xfer structure. We don't know whose context
* the cmd is in, so copy it.
*/
xs->sc_link = sc_link;
bcopy(scsipi_cmd, &xs->cmdstore, cmdlen);
xs->cmd = &xs->cmdstore;
xs->cmdlen = cmdlen;
xs->data = data_addr;
xs->datalen = datalen;
xs->retries = retries;
xs->timeout = timeout;
xs->bp = bp;
/*
* Set the LUN in the CDB if we have an older device. We also
* set it for more modern SCSI-II devices "just in case".
*/
if ((sc_link->type == BUS_SCSI) &&
((sc_link->scsipi_scsi.scsi_version & SID_ANSII) <= 2))
xs->cmd->bytes[0] |=
((sc_link->scsipi_scsi.lun << SCSI_CMD_LUN_SHIFT) &
SCSI_CMD_LUN_MASK);
return (xs);
}