224 lines
6.6 KiB
C
224 lines
6.6 KiB
C
/* $NetBSD: atapi_base.c,v 1.26 2005/12/11 12:23:50 christos Exp $ */
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/*-
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* Copyright (c) 1998, 1999, 2004 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum; by Jason R. Thorpe of the Numerical Aerospace
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* Simulation Facility, NASA Ames Research Center.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: atapi_base.c,v 1.26 2005/12/11 12:23:50 christos Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/buf.h>
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#include <sys/uio.h>
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#include <sys/malloc.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsipiconf.h>
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#include <dev/scsipi/atapiconf.h>
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#include <dev/scsipi/scsipi_base.h>
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/*
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* Look at the returned sense and act on the error, determining
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* the unix error number to pass back. (0 = report no error)
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*
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* THIS IS THE DEFAULT ERROR HANDLER
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*/
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int
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atapi_interpret_sense(struct scsipi_xfer *xs)
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{
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struct scsipi_periph *periph = xs->xs_periph;
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int key, error;
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const char *msg = NULL;
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/*
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* If the device has it's own error handler, call it first.
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* If it returns a legit error value, return that, otherwise
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* it wants us to continue with normal error processing.
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*/
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if (periph->periph_switch->psw_error != NULL) {
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SC_DEBUG(periph, SCSIPI_DB2,
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("calling private err_handler()\n"));
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error = (*periph->periph_switch->psw_error)(xs);
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if (error != EJUSTRETURN)
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return (error);
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}
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/*
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* otherwise use the default, call the generic sense handler if we have
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* more than the sense key
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*/
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if (xs->error == XS_SENSE)
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return (scsipi_interpret_sense(xs));
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key = (xs->sense.atapi_sense & 0xf0) >> 4;
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switch (key) {
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case SKEY_RECOVERED_ERROR:
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msg = "soft error (corrected)";
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case SKEY_NO_SENSE:
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if (xs->resid == xs->datalen)
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xs->resid = 0; /* not short read */
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error = 0;
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break;
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case SKEY_NOT_READY:
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if ((periph->periph_flags & PERIPH_REMOVABLE) != 0)
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periph->periph_flags &= ~PERIPH_MEDIA_LOADED;
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if ((xs->xs_control & XS_CTL_IGNORE_NOT_READY) != 0)
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return (0);
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if ((xs->xs_control & XS_CTL_SILENT) != 0)
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return (EIO);
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msg = "not ready";
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error = EIO;
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break;
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case SKEY_MEDIUM_ERROR: /* MEDIUM ERROR */
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msg = "medium error";
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error = EIO;
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break;
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case SKEY_HARDWARE_ERROR:
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msg = "non-media hardware failure";
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error = EIO;
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break;
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case SKEY_ILLEGAL_REQUEST:
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if ((xs->xs_control &
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XS_CTL_IGNORE_ILLEGAL_REQUEST) != 0)
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return (0);
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if ((xs->xs_control & XS_CTL_SILENT) != 0)
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return (EIO);
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msg = "illegal request";
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error = EINVAL;
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break;
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case SKEY_UNIT_ATTENTION:
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if ((periph->periph_flags & PERIPH_REMOVABLE) != 0)
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periph->periph_flags &= ~PERIPH_MEDIA_LOADED;
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if ((xs->xs_control &
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XS_CTL_IGNORE_MEDIA_CHANGE) != 0 ||
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/* XXX Should reupload any transient state. */
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(periph->periph_flags & PERIPH_REMOVABLE) == 0)
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return (ERESTART);
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if ((xs->xs_control & XS_CTL_SILENT) != 0)
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return (EIO);
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msg = "unit attention";
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error = EIO;
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break;
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case SKEY_DATA_PROTECT:
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msg = "readonly device";
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error = EROFS;
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break;
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case SKEY_ABORTED_COMMAND:
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msg = "command aborted";
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if (xs->xs_retries != 0) {
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xs->xs_retries--;
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error = ERESTART;
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} else
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error = EIO;
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break;
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default:
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error = EIO;
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break;
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}
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if (!key) {
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if (xs->sense.atapi_sense & 0x01) {
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/* Illegal length indication */
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msg = "ATA illegal length indication";
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error = EIO;
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}
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if (xs->sense.atapi_sense & 0x02) { /* vol overflow */
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msg = "ATA volume overflow";
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error = ENOSPC;
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}
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if (xs->sense.atapi_sense & 0x04) { /* Aborted command */
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msg = "ATA command aborted";
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if (xs->xs_retries != 0) {
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xs->xs_retries--;
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error = ERESTART;
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} else
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error = EIO;
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}
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}
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if (msg) {
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scsipi_printaddr(periph);
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printf("%s\n", msg);
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} else {
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if (error) {
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scsipi_printaddr(periph);
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printf("unknown error code %d\n",
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xs->sense.atapi_sense);
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}
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}
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return (error);
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}
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/*
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* Utility routines often used in SCSI stuff
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*/
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/*
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* Print out the scsi_link structure's address info.
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*/
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void
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atapi_print_addr(struct scsipi_periph *periph)
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{
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struct scsipi_channel *chan = periph->periph_channel;
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struct scsipi_adapter *adapt = chan->chan_adapter;
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printf("%s(%s:%d:%d): ", periph->periph_dev != NULL ?
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periph->periph_dev->dv_xname : "probe",
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adapt->adapt_dev->dv_xname,
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chan->chan_channel, periph->periph_target);
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}
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/*
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* ask the atapi driver to perform a command for us.
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* tell it where to read/write the data, and how
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* long the data is supposed to be. If we have a buf
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* to associate with the transfer, we need that too.
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*/
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void
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atapi_scsipi_cmd(struct scsipi_xfer *xs)
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{
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struct scsipi_periph *periph = xs->xs_periph;
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SC_DEBUG(periph, SCSIPI_DB2, ("atapi_cmd\n"));
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xs->cmdlen = (periph->periph_cap & PERIPH_CAP_CMD16) ? 16 : 12;
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}
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