st_atapi.c revision 1.2
1 /* $NetBSD: st_atapi.c,v 1.2 2001/06/18 09:05:05 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Originally written by Julian Elischer (julian (at) tfs.com) 41 * for TRW Financial Systems for use under the MACH(2.5) operating system. 42 * 43 * TRW Financial Systems, in accordance with their agreement with Carnegie 44 * Mellon University, makes this software available to CMU to distribute 45 * or use in any manner that they see fit as long as this message is kept with 46 * the software. For this reason TFS also grants any other persons or 47 * organisations permission to use or modify this software. 48 * 49 * TFS supplies this software to be publicly redistributed 50 * on the understanding that TFS is not responsible for the correct 51 * functioning of this software in any circumstances. 52 * 53 * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992 54 * major changes by Julian Elischer (julian (at) jules.dialix.oz.au) May 1993 55 * 56 * A lot of rewhacking done by mjacob (mjacob (at) nas.nasa.gov). 57 */ 58 59 #include "opt_scsi.h" 60 #include "rnd.h" 61 62 #include <sys/types.h> 63 #include <sys/param.h> 64 #include <sys/device.h> 65 #include <sys/buf.h> 66 #include <sys/conf.h> 67 #include <sys/kernel.h> 68 #include <sys/systm.h> 69 70 #include <dev/scsipi/stvar.h> 71 #include <dev/scsipi/atapi_tape.h> 72 73 int st_atapibus_match __P((struct device *, struct cfdata *, void *)); 74 void st_atapibus_attach __P((struct device *, struct device *, void *)); 75 int st_atapibus_ops __P((struct st_softc *, int, int)); 76 int st_atapibus_mode_sense __P((struct st_softc *, int)); 77 int st_atapibus_mode_select __P((struct st_softc *, int)); 78 int st_atapibus_do_ms __P((struct st_softc *, int, void *, int, int)); 79 80 struct cfattach st_atapibus_ca = { 81 sizeof(struct st_softc), st_atapibus_match, st_atapibus_attach 82 }; 83 84 const struct scsipi_inquiry_pattern st_atapibus_patterns[] = { 85 {T_SEQUENTIAL, T_REMOV, 86 "", "", ""}, 87 }; 88 89 int 90 st_atapibus_match(parent, match, aux) 91 struct device *parent; 92 struct cfdata *match; 93 void *aux; 94 { 95 struct scsipibus_attach_args *sa = aux; 96 int priority; 97 98 if (scsipi_periph_bustype(sa->sa_periph) != SCSIPI_BUSTYPE_ATAPI) 99 return (0); 100 101 (void)scsipi_inqmatch(&sa->sa_inqbuf, 102 (caddr_t)st_atapibus_patterns, 103 sizeof(st_atapibus_patterns)/sizeof(st_atapibus_patterns[0]), 104 sizeof(st_atapibus_patterns[0]), &priority); 105 return (priority); 106 } 107 108 void 109 st_atapibus_attach(parent, self, aux) 110 struct device *parent, *self; 111 void *aux; 112 { 113 struct st_softc *st = (void *)self; 114 115 st->ops = st_atapibus_ops; 116 stattach(parent, st, aux); 117 } 118 119 int 120 st_atapibus_ops(st, op, flags) 121 struct st_softc *st; 122 int op; 123 int flags; 124 { 125 switch(op) { 126 case ST_OPS_RBL: 127 /* done in mode_sense */ 128 return 0; 129 case ST_OPS_MODESENSE: 130 return st_atapibus_mode_sense(st, flags); 131 case ST_OPS_MODESELECT: 132 return st_atapibus_mode_select(st, flags); 133 case ST_OPS_CMPRSS_ON: 134 case ST_OPS_CMPRSS_OFF: 135 return ENODEV; 136 default: 137 panic("st_scsibus_ops: invalid op"); 138 /* NOTREACHED */ 139 } 140 } 141 142 int 143 st_atapibus_mode_sense(st, flags) 144 struct st_softc *st; 145 int flags; 146 { 147 int count, error; 148 struct atapi_cappage cappage; 149 struct scsipi_periph *periph = st->sc_periph; 150 151 /* get drive capabilities, some drives needs this repeated */ 152 for (count = 0 ; count < 5 ; count++) { 153 error = scsipi_mode_sense(periph, SMS_DBD, 154 ATAPI_TAPE_CAP_PAGE, &cappage.header, sizeof(cappage), 155 flags | XS_CTL_DATA_ONSTACK, ST_RETRIES, ST_CTL_TIME); 156 if (error == 0) { 157 st->numblks = 0; /* unused anyway */ 158 if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK32K) 159 st->media_blksize = 32768; 160 else if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK1K) 161 st->media_blksize = 1024; 162 else if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK512) 163 st->media_blksize = 512; 164 else { 165 error = ENODEV; 166 continue; 167 } 168 st->blkmin = st->blkmax = st->media_blksize; 169 st->media_density = 0; 170 if (cappage.header.dev_spec & SMH_DSP_WRITE_PROT) 171 st->flags |= ST_READONLY; 172 else 173 st->flags &= ~ST_READONLY; 174 SC_DEBUG(periph, SCSIPI_DB3, 175 ("density code %d, %d-byte blocks, write-%s, ", 176 st->media_density, st->media_blksize, 177 st->flags & ST_READONLY ? "protected" : "enabled")); 178 SC_DEBUG(periph, SCSIPI_DB3, 179 ("%sbuffered\n", 180 cappage.header.dev_spec & SMH_DSP_BUFF_MODE ? 181 "" : "un")); 182 periph->periph_flags |= PERIPH_MEDIA_LOADED; 183 return 0; 184 } 185 } 186 return error; 187 } 188 189 int 190 st_atapibus_mode_select(st, flags) 191 struct st_softc *st; 192 int flags; 193 { 194 return ENODEV; /* for now ... */ 195 } 196
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