transport.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <libintl.h>
#include "transport.h"
#include "main.h"
#include "util.h"
#include "mmc.h"
static char ucdb[16];
static uint_t total_retries;
struct uscsi_cmd *
get_uscsi_cmd(void)
{
return (&uscmd);
}
int
{
int ret, global_rqsense;
int retries, max_retries;
/* set up for request sense extensions */
global_rqsense = 1;
} else {
global_rqsense = 0;
}
/*
* Some DVD drives may have a delay for writing or sync cache, and
* read media info (done after syncing cache). This can take a
* significant number of time. Such as the Pioneer A0X which will
* generate TOC after the cache is full in the middle of writing.
*/
max_retries = 500;
} else {
max_retries = 20;
}
/*
* The device may be busy or slow and fail with a not ready status.
* we'll allow a limited number of retries to give the drive time
* to recover.
*/
scmd->uscsi_status = 0;
if (global_rqsense)
int i;
(void) printf("cmd:[");
for (i = 0; i < scmd->uscsi_cdblen; i++)
(void) printf("0x%02x ",
(void) printf("]\n");
}
/*
* We need to have root privledges in order to use
* uscsi commands on the device.
*/
raise_priv();
lower_priv();
/* maintain consistency in case of sgen */
ret = -1;
}
/* if error and extended request sense, retrieve errors */
/*
* The drive is not ready to recieve commands but
* may be in the process of becoming ready.
* sleep for a short time then retry command.
* ASCQ = 0 Not Reportable.
* ASCQ = 1 Becoming ready.
* ASCQ = 4 FORMAT in progress.
* ASCQ = 7 Operation in progress.
* ASCQ = 8 Long write in progress.
*/
(void) sleep(3);
continue;
}
/*
* we do not print this out under normal circumstances
* since we have BUFE enabled and do not want to alarm
* users with uneccessary messages.
*/
if (debug) {
"Buffer underrun occurred! trying to recover...\n"));
}
}
/*
* long write operation in progress, ms_delay is
* used for some fast drives with a short drive
* buffer. Such as Pioneer DVD-RW drives. They will
* begin to generate TOC when the buffer is initially
* full, then resume operation a few minutes later
* with the buffer emptying quickly.
*/
ms_delay(500);
continue;
}
/*
* Device is not ready to transmit or a device reset
* has occurred. wait for a short period of time then
* retry the command.
*/
(void) sleep(3);
continue;
}
/*
* Blank Sense, we don't know what the error is or if
* the command succeeded, Hope for the best. Some
* drives return blank sense periodically and will
* fail if this is removed.
*/
ret = 0;
break;
}
if (debug) {
(void) printf("cmd: 0x%02x ret:%i status:%02x "
" sense: %02x ASC: %02x ASCQ:%02x\n",
}
}
/* no errors we'll return */
break;
}
/* store the error status for later debug printing */
if ((ret < 0) && (global_rqsense)) {
}
}
return (ret);
}