16a9d90e17
- `flags' is now gone, replaced with `xs_control' and `xs_status'. - Massive cleanup of the control flags. Now we explicitly say that a job is to complete asynchronously, rather than relying on side-effects, and use a new flag to now that device discovery is being performed. - Do SCSI device discovery interrupt-driven.
301 lines
8.3 KiB
C
301 lines
8.3 KiB
C
/* $NetBSD: atapi_base.c,v 1.14 1999/09/30 22:57:52 thorpej Exp $ */
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/*-
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* Copyright (c) 1998 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.
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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/types.h>
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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/atapi_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(xs)
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struct scsipi_xfer *xs;
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{
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int key, error;
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struct scsipi_link *sc_link = xs->sc_link;
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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 (sc_link->device->err_handler) {
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SC_DEBUG(sc_link, SDEV_DB2,
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("calling private err_handler()\n"));
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error = (*sc_link->device->err_handler) (xs);
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if (error != SCSIRET_CONTINUE)
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return (error); /* error >= 0 better ? */
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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 ((sc_link->flags & SDEV_REMOVABLE) != 0)
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sc_link->flags &= ~SDEV_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 ((sc_link->flags & SDEV_REMOVABLE) != 0)
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sc_link->flags &= ~SDEV_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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(sc_link->flags & SDEV_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_WRITE_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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error = ERESTART;
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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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error = ERESTART;
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}
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}
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if (msg) {
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sc_link->sc_print_addr(sc_link);
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printf("%s\n", msg);
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} else {
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if (error) {
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sc_link->sc_print_addr(sc_link);
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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(sc_link)
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struct scsipi_link *sc_link;
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{
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printf("%s(%s:%d:%d): ",
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sc_link->device_softc ?
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((struct device *)sc_link->device_softc)->dv_xname : "probe",
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((struct device *)sc_link->adapter_softc)->dv_xname,
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sc_link->scsipi_atapi.channel, sc_link->scsipi_atapi.drive);
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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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int
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atapi_scsipi_cmd(sc_link, scsipi_cmd, cmdlen, data_addr, datalen,
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retries, timeout, bp, flags)
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struct scsipi_link *sc_link;
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struct scsipi_generic *scsipi_cmd;
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int cmdlen;
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u_char *data_addr;
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int datalen;
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int retries;
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int timeout;
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struct buf *bp;
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int flags;
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{
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struct scsipi_xfer *xs;
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int error, s;
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SC_DEBUG(sc_link, SDEV_DB2, ("atapi_cmd\n"));
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#ifdef DIAGNOSTIC
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if (bp != NULL && (flags & XS_CTL_ASYNC) == 0)
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panic("atapi_scsipi_cmd: buffer without async");
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#endif
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if ((xs = scsipi_make_xs(sc_link, scsipi_cmd, cmdlen, data_addr,
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datalen, retries, timeout, bp, flags)) == NULL) {
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if (bp != NULL) {
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s = splbio();
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bp->b_flags |= B_ERROR;
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bp->b_error = ENOMEM;
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biodone(bp);
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splx(s);
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}
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return (ENOMEM);
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}
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xs->cmdlen = (sc_link->scsipi_atapi.cap & ACAP_LEN) ? 16 : 12;
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if ((error = scsipi_execute_xs(xs)) == EJUSTRETURN)
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return (0);
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/*
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* we have finished with the xfer stuct, free it and
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* check if anyone else needs to be started up.
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*/
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s = splbio();
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scsipi_free_xs(xs, flags);
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splx(s);
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return (error);
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}
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int
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atapi_mode_select(l, data, len, flags, retries, timeout)
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struct scsipi_link *l;
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struct atapi_mode_header *data;
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int len, flags, retries, timeout;
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{
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struct atapi_mode_select scsipi_cmd;
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int error;
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bzero(&scsipi_cmd, sizeof(scsipi_cmd));
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scsipi_cmd.opcode = ATAPI_MODE_SELECT;
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scsipi_cmd.byte2 = AMS_PF;
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_lto2b(len, scsipi_cmd.length);
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/* length is reserved when doing mode select; zero it */
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_lto2l(0, data->length);
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error = scsipi_command(l, (struct scsipi_generic *)&scsipi_cmd,
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sizeof(scsipi_cmd), (void *)data, len, retries, timeout, NULL,
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flags | XS_CTL_DATA_OUT);
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SC_DEBUG(l, SDEV_DB2, ("atapi_mode_select: error=%d\n", error));
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return (error);
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}
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int
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atapi_mode_sense(l, page, data, len, flags, retries, timeout)
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struct scsipi_link *l;
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int page, len, flags, retries, timeout;
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struct atapi_mode_header *data;
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{
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struct atapi_mode_sense scsipi_cmd;
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int error;
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bzero(&scsipi_cmd, sizeof(scsipi_cmd));
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scsipi_cmd.opcode = ATAPI_MODE_SENSE;
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scsipi_cmd.page = page;
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_lto2b(len, scsipi_cmd.length);
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error = scsipi_command(l, (struct scsipi_generic *)&scsipi_cmd,
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sizeof(scsipi_cmd), (void *)data, len, retries, timeout, NULL,
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flags | XS_CTL_DATA_IN);
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SC_DEBUG(l, SDEV_DB2, ("atapi_mode_sense: error=%d\n", error));
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return (error);
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}
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