1 /* $NetBSD: scsi_base.c,v 1.89 2008/04/28 20:23:57 martin 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 1.89 2008/04/28 20:23:57 martin 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 */ 54 int 55 scsi_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 */ 73 void 74 scsi_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 */ 97 void 98 scsi_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 */ 115 void 116 scsi_kill_pending(struct scsipi_periph *periph) 117 { 118 } 119