1 /* $NetBSD: scsipi_base.h,v 1.4 1997/10/01 01:19:08 enami Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1995, 1997 Charles M. Hannum. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Charles M. Hannum. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Originally written by Julian Elischer (julian@dialix.oz.au) 34 */ 35 36 extern LIST_HEAD(xs_free_list, scsipi_xfer) xs_free_list; 37 38 struct scsipi_xfer *scsipi_get_xs __P((struct scsipi_link *, int)); 39 void scsipi_free_xs __P((struct scsipi_xfer *, int)); 40 41 static __inline struct scsipi_xfer *scsipi_make_xs __P((struct scsipi_link *, 42 struct scsipi_generic *, int cmdlen, u_char *data_addr, 43 int datalen, int retries, int timeout, struct buf *, 44 int flags)) __attribute__ ((unused)); 45 46 /* 47 * Make a scsipi_xfer, and return a pointer to it. 48 */ 49 50 static __inline struct scsipi_xfer * 51 scsipi_make_xs(sc_link, scsipi_cmd, cmdlen, data_addr, datalen, 52 retries, timeout, bp, flags) 53 struct scsipi_link *sc_link; 54 struct scsipi_generic *scsipi_cmd; 55 int cmdlen; 56 u_char *data_addr; 57 int datalen; 58 int retries; 59 int timeout; 60 struct buf *bp; 61 int flags; 62 { 63 struct scsipi_xfer *xs; 64 65 if ((xs = scsipi_get_xs(sc_link, flags)) == NULL) 66 return (NULL); 67 68 /* 69 * Fill out the scsipi_xfer structure. We don't know whose context 70 * the cmd is in, so copy it. 71 */ 72 xs->sc_link = sc_link; 73 bcopy(scsipi_cmd, &xs->cmdstore, cmdlen); 74 xs->cmd = &xs->cmdstore; 75 xs->cmdlen = cmdlen; 76 xs->data = data_addr; 77 xs->datalen = datalen; 78 xs->retries = retries; 79 xs->timeout = timeout; 80 xs->bp = bp; 81 82 /* 83 * Set the LUN in the CDB if we have an older device. We also 84 * set it for more modern SCSI-II devices "just in case". 85 */ 86 87 if ((sc_link->type == BUS_SCSI) && 88 ((sc_link->scsipi_scsi.scsi_version & SID_ANSII) <= 2)) 89 xs->cmd->bytes[0] |= 90 ((sc_link->scsipi_scsi.lun << SCSI_CMD_LUN_SHIFT) & 91 SCSI_CMD_LUN_MASK); 92 93 return (xs); 94 } 95