388 lines
12 KiB
C
388 lines
12 KiB
C
/* $NetBSD: sd_scsi.c,v 1.14 2000/05/31 09:15:48 augustss 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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/*
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* Originally written by Julian Elischer (julian@dialix.oz.au)
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* for TRW Financial Systems for use under the MACH(2.5) operating system.
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*
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* TRW Financial Systems, in accordance with their agreement with Carnegie
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* Mellon University, makes this software available to CMU to distribute
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* or use in any manner that they see fit as long as this message is kept with
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* the software. For this reason TFS also grants any other persons or
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* organisations permission to use or modify this software.
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*
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* TFS supplies this software to be publicly redistributed
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* on the understanding that TFS is not responsible for the correct
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* functioning of this software in any circumstances.
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*
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* Ported to run under 386BSD by Julian Elischer (julian@dialix.oz.au) Sept 1992
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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/malloc.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/disk.h>
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#include <dev/scsipi/scsipi_all.h>
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#include <dev/scsipi/scsi_all.h>
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#include <dev/scsipi/scsipi_disk.h>
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#include <dev/scsipi/scsi_disk.h>
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#include <dev/scsipi/scsiconf.h>
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#include <dev/scsipi/sdvar.h>
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int sd_scsibus_match __P((struct device *, struct cfdata *, void *));
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void sd_scsibus_attach __P((struct device *, struct device *, void *));
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struct cfattach sd_scsibus_ca = {
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sizeof(struct sd_softc), sd_scsibus_match, sd_scsibus_attach,
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sddetach, sdactivate,
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};
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struct scsipi_inquiry_pattern sd_scsibus_patterns[] = {
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{T_DIRECT, T_FIXED,
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"", "", ""},
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{T_DIRECT, T_REMOV,
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"", "", ""},
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{T_OPTICAL, T_FIXED,
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"", "", ""},
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{T_OPTICAL, T_REMOV,
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"", "", ""},
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};
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struct sd_scsibus_mode_sense_data {
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struct scsi_mode_header header;
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struct scsi_blk_desc blk_desc;
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union scsi_disk_pages pages;
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};
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static int sd_scsibus_mode_sense __P((struct sd_softc *,
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struct sd_scsibus_mode_sense_data *, int, int));
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static int sd_scsibus_get_parms __P((struct sd_softc *,
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struct disk_parms *, int));
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static int sd_scsibus_get_optparms __P((struct sd_softc *,
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struct disk_parms *, int));
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static int sd_scsibus_flush __P((struct sd_softc *, int));
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const struct sd_ops sd_scsibus_ops = {
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sd_scsibus_get_parms,
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sd_scsibus_flush,
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};
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int
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sd_scsibus_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct scsipibus_attach_args *sa = aux;
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int priority;
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if (sa->sa_sc_link->type != BUS_SCSI)
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return (0);
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(void)scsipi_inqmatch(&sa->sa_inqbuf,
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(caddr_t)sd_scsibus_patterns,
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sizeof(sd_scsibus_patterns) / sizeof(sd_scsibus_patterns[0]),
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sizeof(sd_scsibus_patterns[0]), &priority);
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return (priority);
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}
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/*
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* The routine called by the low level scsi routine when it discovers
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* a device suitable for this driver.
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*/
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void
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sd_scsibus_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct sd_softc *sd = (void *)self;
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struct scsipibus_attach_args *sa = aux;
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struct scsipi_link *sc_link = sa->sa_sc_link;
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SC_DEBUG(sc_link, SDEV_DB2, ("sd_scsibus_attach: "));
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sd->type = (sa->sa_inqbuf.type & SID_TYPE);
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scsipi_strvis(sd->name, 16, sa->sa_inqbuf.product, 16);
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/*
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* Note if this device is ancient. This is used in sdminphys().
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*/
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if ((sa->scsipi_info.scsi_version & SID_ANSII) == 0)
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sd->flags |= SDF_ANCIENT;
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sdattach(parent, sd, sc_link, &sd_scsibus_ops);
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}
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static int
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sd_scsibus_mode_sense(sd, scsipi_sense, page, flags)
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struct sd_softc *sd;
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struct sd_scsibus_mode_sense_data *scsipi_sense;
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int page, flags;
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{
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struct scsi_mode_sense sense_cmd;
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struct scsi_mode_sense_big sensebig_cmd;
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struct scsipi_generic *cmd;
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int len;
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/*
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* Make sure the sense buffer is clean before we do
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* the mode sense, so that checks for bogus values of
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* 0 will work in case the mode sense fails.
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*/
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bzero(scsipi_sense, sizeof(*scsipi_sense));
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if (sd->sc_link->quirks & SDEV_ONLYBIG) {
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memset(&sensebig_cmd, 0, sizeof(sensebig_cmd));
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sensebig_cmd.opcode = SCSI_MODE_SENSE_BIG;
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sensebig_cmd.page = page;
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_lto2b(0x20, sensebig_cmd.length);
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cmd = (struct scsipi_generic *)&sensebig_cmd;
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len = sizeof(sensebig_cmd);
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} else {
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memset(&sense_cmd, 0, sizeof(sense_cmd));
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sense_cmd.opcode = SCSI_MODE_SENSE;
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sense_cmd.page = page;
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sense_cmd.length = 0x20;
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cmd = (struct scsipi_generic *)&sense_cmd;
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len = sizeof(sense_cmd);
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}
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/*
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* If the command worked, use the results to fill out
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* the parameter structure
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*/
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return (scsipi_command(sd->sc_link,
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cmd, len, (u_char *)scsipi_sense, sizeof(*scsipi_sense),
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SDRETRIES, 6000, NULL, flags | XS_CTL_DATA_IN | XS_CTL_SILENT));
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}
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static int
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sd_scsibus_get_optparms(sd, dp, flags)
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struct sd_softc *sd;
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struct disk_parms *dp;
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int flags;
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{
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struct scsi_mode_sense scsipi_cmd;
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struct sd_scsibus_mode_sense_data scsipi_sense;
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u_long sectors;
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int error;
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dp->blksize = 512;
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if ((sectors = scsipi_size(sd->sc_link, flags)) == 0)
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return (SDGP_RESULT_OFFLINE); /* XXX? */
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/* XXX
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* It is better to get the following params from the
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* mode sense page 6 only (optical device parameter page).
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* However, there are stupid optical devices which does NOT
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* support the page 6. Ghaa....
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*/
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bzero(&scsipi_cmd, sizeof(scsipi_cmd));
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scsipi_cmd.opcode = SCSI_MODE_SENSE;
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scsipi_cmd.page = 0x3f; /* all pages */
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scsipi_cmd.length = sizeof(struct scsi_mode_header) +
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sizeof(struct scsi_blk_desc);
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if ((error = scsipi_command(sd->sc_link,
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(struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd),
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(u_char *)&scsipi_sense, sizeof(scsipi_sense), SDRETRIES,
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6000, NULL, flags | XS_CTL_DATA_IN)) != 0)
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return (SDGP_RESULT_OFFLINE); /* XXX? */
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dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
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if (dp->blksize == 0)
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dp->blksize = 512;
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/*
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* Create a pseudo-geometry.
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*/
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dp->heads = 64;
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dp->sectors = 32;
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dp->cyls = sectors / (dp->heads * dp->sectors);
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dp->disksize = sectors;
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return (SDGP_RESULT_OK);
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}
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/*
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* Get the scsi driver to send a full inquiry to the * device and use the
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* results to fill out the disk parameter structure.
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*/
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static int
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sd_scsibus_get_parms(sd, dp, flags)
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struct sd_softc *sd;
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struct disk_parms *dp;
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int flags;
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{
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struct sd_scsibus_mode_sense_data scsipi_sense;
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struct scsipi_link *link = sd->sc_link;
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u_long sectors;
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int page;
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int error;
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dp->rot_rate = 3600; /* XXX any way of getting this? */
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/*
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* If offline, the SDEV_MEDIA_LOADED flag will be
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* cleared by the caller if necessary.
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*/
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if (sd->type == T_OPTICAL)
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return (sd_scsibus_get_optparms(sd, dp, flags));
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if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, page = 4,
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flags)) == 0) {
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SC_DEBUG(link, SDEV_DB3,
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("%d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
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_3btol(scsipi_sense.pages.rigid_geometry.ncyl),
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scsipi_sense.pages.rigid_geometry.nheads,
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_2btol(scsipi_sense.pages.rigid_geometry.st_cyl_wp),
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_2btol(scsipi_sense.pages.rigid_geometry.st_cyl_rwc),
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_2btol(scsipi_sense.pages.rigid_geometry.land_zone)));
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/*
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* KLUDGE!! (for zone recorded disks)
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* give a number of sectors so that sec * trks * cyls
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* is <= disk_size
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* can lead to wasted space! THINK ABOUT THIS !
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*/
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dp->heads = scsipi_sense.pages.rigid_geometry.nheads;
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dp->cyls = _3btol(scsipi_sense.pages.rigid_geometry.ncyl);
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dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
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if (dp->heads == 0 || dp->cyls == 0)
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goto fake_it;
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if (dp->blksize == 0)
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dp->blksize = 512;
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sectors = scsipi_size(link, flags);
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dp->disksize = sectors;
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sectors /= (dp->heads * dp->cyls);
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dp->sectors = sectors; /* XXX dubious on SCSI */
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return (SDGP_RESULT_OK);
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}
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if ((error = sd_scsibus_mode_sense(sd, &scsipi_sense, page = 5,
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flags)) == 0) {
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dp->heads = scsipi_sense.pages.flex_geometry.nheads;
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dp->cyls = _2btol(scsipi_sense.pages.flex_geometry.ncyl);
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dp->blksize = _3btol(scsipi_sense.blk_desc.blklen);
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dp->sectors = scsipi_sense.pages.flex_geometry.ph_sec_tr;
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dp->disksize = dp->heads * dp->cyls * dp->sectors;
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if (dp->disksize == 0)
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goto fake_it;
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if (dp->blksize == 0)
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dp->blksize = 512;
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return (SDGP_RESULT_OK);
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}
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fake_it:
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if ((link->quirks & SDEV_NOMODESENSE) == 0) {
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if (error == 0)
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printf("%s: mode sense (%d) returned nonsense",
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sd->sc_dev.dv_xname, page);
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else
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printf("%s: could not mode sense (4/5)",
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sd->sc_dev.dv_xname);
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printf("; using fictitious geometry\n");
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}
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sectors = scsipi_size(link, flags);
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dp->disksize = sectors;
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dp->blksize = 512;
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/* Try calling driver's method for figuring out geometry. */
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if (link->adapter->scsipi_getgeom == NULL ||
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!(*link->adapter->scsipi_getgeom)(link, dp, sectors)) {
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/*
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* Use adaptec standard fictitious geometry
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* this depends on which controller (e.g. 1542C is
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* different. but we have to put SOMETHING here..)
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*/
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dp->heads = 64;
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dp->sectors = 32;
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dp->cyls = sectors / (64 * 32);
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}
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return (SDGP_RESULT_OK);
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}
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static int
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sd_scsibus_flush(sd, flags)
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struct sd_softc *sd;
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int flags;
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{
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struct scsipi_link *sc_link = sd->sc_link;
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struct scsi_synchronize_cache sync_cmd;
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/*
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* If the device is SCSI-2, issue a SYNCHRONIZE CACHE.
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* We issue with address 0 length 0, which should be
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* interpreted by the device as "all remaining blocks
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* starting at address 0". We ignore ILLEGAL REQUEST
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* in the event that the command is not supported by
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* the device, and poll for completion so that we know
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* that the cache has actually been flushed.
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*
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* Unless, that is, the device can't handle the SYNCHRONIZE CACHE
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* command, as indicated by our quirks flags.
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*
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* XXX What about older devices?
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*/
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if ((sc_link->scsipi_scsi.scsi_version & SID_ANSII) >= 2 &&
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(sc_link->quirks & SDEV_NOSYNCCACHE) == 0) {
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sd->flags |= SDF_FLUSHING;
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bzero(&sync_cmd, sizeof(sync_cmd));
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sync_cmd.opcode = SCSI_SYNCHRONIZE_CACHE;
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return(scsipi_command(sc_link,
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(struct scsipi_generic *)&sync_cmd, sizeof(sync_cmd),
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NULL, 0, SDRETRIES, 100000, NULL,
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flags|XS_CTL_IGNORE_ILLEGAL_REQUEST));
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} else
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return(0);
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}
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