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NetBSD/sys/dev/scsipi/atapi_base.c

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/* $NetBSD: atapi_base.c,v 1.12 1999/06/25 18:58:54 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Charles M. Hannum.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/buf.h>
#include <sys/uio.h>
#include <sys/malloc.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <dev/scsipi/scsipi_all.h>
#include <dev/scsipi/atapi_all.h>
#include <dev/scsipi/scsipiconf.h>
#include <dev/scsipi/atapiconf.h>
#include <dev/scsipi/scsipi_base.h>
/*
* Look at the returned sense and act on the error, determining
* the unix error number to pass back. (0 = report no error)
*
* THIS IS THE DEFAULT ERROR HANDLER
*/
int
atapi_interpret_sense(xs)
struct scsipi_xfer *xs;
{
int key, error;
struct scsipi_link *sc_link = xs->sc_link;
char *msg = NULL;
/*
* If the device has it's own error handler, call it first.
* If it returns a legit error value, return that, otherwise
* it wants us to continue with normal error processing.
*/
if (sc_link->device->err_handler) {
SC_DEBUG(sc_link, SDEV_DB2,
("calling private err_handler()\n"));
error = (*sc_link->device->err_handler) (xs);
if (error != SCSIRET_CONTINUE)
return (error); /* error >= 0 better ? */
}
/*
* otherwise use the default, call the generic sense handler if we have
* more than the sense key
*/
if (xs->error == XS_SENSE)
return (scsipi_interpret_sense(xs));
key = (xs->sense.atapi_sense & 0xf0) >> 4;
switch (key) {
case SKEY_RECOVERED_ERROR:
msg = "soft error (corrected)";
case SKEY_NO_SENSE:
if (xs->resid == xs->datalen)
xs->resid = 0; /* not short read */
error = 0;
break;
case SKEY_NOT_READY:
if ((sc_link->flags & SDEV_REMOVABLE) != 0)
sc_link->flags &= ~SDEV_MEDIA_LOADED;
if ((xs->flags & SCSI_IGNORE_NOT_READY) != 0)
return (0);
if ((xs->flags & SCSI_SILENT) != 0)
return (EIO);
msg = "not ready";
error = EIO;
break;
case SKEY_MEDIUM_ERROR: /* MEDIUM ERROR */
msg = "medium error";
error = EIO;
break;
case SKEY_HARDWARE_ERROR:
msg = "non-media hardware failure";
error = EIO;
break;
case SKEY_ILLEGAL_REQUEST:
if ((xs->flags & SCSI_IGNORE_ILLEGAL_REQUEST) != 0)
return (0);
if ((xs->flags & SCSI_SILENT) != 0)
return (EIO);
msg = "illegal request";
error = EINVAL;
break;
case SKEY_UNIT_ATTENTION:
if ((sc_link->flags & SDEV_REMOVABLE) != 0)
sc_link->flags &= ~SDEV_MEDIA_LOADED;
if ((xs->flags & SCSI_IGNORE_MEDIA_CHANGE) != 0 ||
/* XXX Should reupload any transient state. */
(sc_link->flags & SDEV_REMOVABLE) == 0)
return (ERESTART);
if ((xs->flags & SCSI_SILENT) != 0)
return (EIO);
msg = "unit attention";
error = EIO;
break;
case SKEY_WRITE_PROTECT:
msg = "readonly device";
error = EROFS;
break;
case SKEY_ABORTED_COMMAND:
msg = "command aborted";
error = ERESTART;
break;
default:
error = EIO;
break;
}
if (!key) {
if (xs->sense.atapi_sense & 0x01) {
/* Illegal length indication */
msg = "ATA illegal length indication";
error = EIO;
}
if (xs->sense.atapi_sense & 0x02) { /* vol overflow */
msg = "ATA volume overflow";
error = ENOSPC;
}
if (xs->sense.atapi_sense & 0x04) { /* Aborted command */
msg = "ATA command aborted";
error = ERESTART;
}
}
if (msg) {
sc_link->sc_print_addr(sc_link);
printf("%s\n", msg);
} else {
if (error) {
sc_link->sc_print_addr(sc_link);
printf("unknown error code %d\n",
xs->sense.atapi_sense);
}
}
return (error);
}
/*
* Utility routines often used in SCSI stuff
*/
/*
* Print out the scsi_link structure's address info.
*/
void
atapi_print_addr(sc_link)
struct scsipi_link *sc_link;
{
printf("%s(%s:%d:%d): ",
sc_link->device_softc ?
((struct device *)sc_link->device_softc)->dv_xname : "probe",
((struct device *)sc_link->adapter_softc)->dv_xname,
sc_link->scsipi_atapi.channel, sc_link->scsipi_atapi.drive);
}
/*
* ask the atapi driver to perform a command for us.
* tell it where to read/write the data, and how
* long the data is supposed to be. If we have a buf
* to associate with the transfer, we need that too.
*/
int
atapi_scsipi_cmd(sc_link, scsipi_cmd, cmdlen, data_addr, datalen,
retries, timeout, bp, flags)
struct scsipi_link *sc_link;
struct scsipi_generic *scsipi_cmd;
int cmdlen;
u_char *data_addr;
int datalen;
int retries;
int timeout;
struct buf *bp;
int flags;
{
struct scsipi_xfer *xs;
int error, s;
SC_DEBUG(sc_link, SDEV_DB2, ("atapi_cmd\n"));
#ifdef DIAGNOSTIC
if (bp != 0 && (flags & SCSI_NOSLEEP) == 0)
panic("atapi_scsipi_cmd: buffer without nosleep");
#endif
if ((xs = scsipi_make_xs(sc_link, scsipi_cmd, cmdlen, data_addr,
datalen, retries, timeout, bp, flags)) == NULL)
return (ENOMEM);
xs->cmdlen = (sc_link->scsipi_atapi.cap & ACAP_LEN) ? 16 : 12;
if ((error = scsipi_execute_xs(xs)) == EJUSTRETURN)
return (0);
/*
* we have finished with the xfer stuct, free it and
* check if anyone else needs to be started up.
*/
s = splbio();
scsipi_free_xs(xs, flags);
splx(s);
return (error);
}
int
atapi_mode_select(l, data, len, flags, retries, timeout)
struct scsipi_link *l;
struct atapi_mode_header *data;
int len, flags, retries, timeout;
{
struct atapi_mode_select scsipi_cmd;
int error;
bzero(&scsipi_cmd, sizeof(scsipi_cmd));
scsipi_cmd.opcode = ATAPI_MODE_SELECT;
scsipi_cmd.byte2 = AMS_PF;
_lto2b(len, scsipi_cmd.length);
/* length is reserved when doing mode select; zero it */
_lto2l(0, data->length);
error = scsipi_command(l, (struct scsipi_generic *)&scsipi_cmd,
sizeof(scsipi_cmd), (void *)data, len, retries, timeout, NULL,
flags | SCSI_DATA_OUT);
SC_DEBUG(l, SDEV_DB2, ("atapi_mode_select: error=%d\n", error));
return (error);
}
int
atapi_mode_sense(l, page, data, len, flags, retries, timeout)
struct scsipi_link *l;
int page, len, flags, retries, timeout;
struct atapi_mode_header *data;
{
struct atapi_mode_sense scsipi_cmd;
int error;
bzero(&scsipi_cmd, sizeof(scsipi_cmd));
scsipi_cmd.opcode = ATAPI_MODE_SENSE;
scsipi_cmd.page = page;
_lto2b(len, scsipi_cmd.length);
error = scsipi_command(l, (struct scsipi_generic *)&scsipi_cmd,
sizeof(scsipi_cmd), (void *)data, len, retries, timeout, NULL,
flags | SCSI_DATA_IN);
SC_DEBUG(l, SDEV_DB2, ("atapi_mode_sense: error=%d\n", error));
return (error);
}
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