1/*	$NetBSD: scsi_base.c,v 1.88 2008/04/05 15:47:01 cegger 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#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: scsi_base.c,v 1.88 2008/04/05 15:47:01 cegger Exp $");
34
35#include <sys/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/buf.h>
39#include <sys/uio.h>
40#include <sys/malloc.h>
41#include <sys/errno.h>
42#include <sys/device.h>
43#include <sys/proc.h>
44
45#include <dev/scsipi/scsipi_all.h>
46#include <dev/scsipi/scsi_all.h>
47#include <dev/scsipi/scsi_disk.h>
48#include <dev/scsipi/scsiconf.h>
49#include <dev/scsipi/scsipi_base.h>
50
51/*
52 * Do a scsi operation, asking a device to run as SCSI-II if it can.
53 */
54int
55scsi_change_def(struct scsipi_periph *periph, int flags)
56{
57	struct scsi_changedef cmd;
58
59	memset(&cmd, 0, sizeof(cmd));
60	cmd.opcode = SCSI_CHANGE_DEFINITION;
61	cmd.how = SC_SCSI_2;
62
63	return (scsipi_command(periph, (void *)&cmd, sizeof(cmd), 0, 0,
64	    SCSIPIRETRIES, 100000, NULL, flags));
65}
66
67/*
68 * ask the scsi driver to perform a command for us.
69 * tell it where to read/write the data, and how
70 * long the data is supposed to be. If we have  a buf
71 * to associate with the transfer, we need that too.
72 */
73void
74scsi_scsipi_cmd(struct scsipi_xfer *xs)
75{
76	struct scsipi_periph *periph = xs->xs_periph;
77
78	SC_DEBUG(periph, SCSIPI_DB2, ("scsi_scsipi_cmd\n"));
79
80	/*
81	 * Set the LUN in the CDB if we have an older device.  We also
82	 * set it for more modern SCSI-2 devices "just in case".
83	 */
84	if (periph->periph_version <= 2)
85		xs->cmd->bytes[0] |=
86		    ((periph->periph_lun << SCSI_CMD_LUN_SHIFT) &
87			SCSI_CMD_LUN_MASK);
88}
89
90/*
91 * Utility routines often used in SCSI stuff
92 */
93
94/*
95 * Print out the periph's address info.
96 */
97void
98scsi_print_addr(struct scsipi_periph *periph)
99{
100	struct scsipi_channel *chan = periph->periph_channel;
101	struct scsipi_adapter *adapt = chan->chan_adapter;
102
103	printf("%s(%s:%d:%d:%d): ", periph->periph_dev != NULL ?
104	    device_xname(periph->periph_dev) : "probe",
105	    device_xname(adapt->adapt_dev),
106	    chan->chan_channel, periph->periph_target,
107	    periph->periph_lun);
108}
109
110/*
111 * Kill off all pending xfers for a periph.
112 *
113 * Must be called at splbio().
114 */
115void
116scsi_kill_pending(struct scsipi_periph *periph)
117{
118}
119