1 /* $NetBSD: st_atapi.c,v 1.4 2001/11/13 06:56:41 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Manuel Bouyer. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by the University of 17 * California, Berkeley and its contributors. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: st_atapi.c,v 1.4 2001/11/13 06:56:41 lukem Exp $"); 37 38 #include "opt_scsi.h" 39 #include "rnd.h" 40 41 #include <sys/types.h> 42 #include <sys/param.h> 43 #include <sys/device.h> 44 #include <sys/buf.h> 45 #include <sys/conf.h> 46 #include <sys/kernel.h> 47 #include <sys/systm.h> 48 49 #include <dev/scsipi/stvar.h> 50 #include <dev/scsipi/atapi_tape.h> 51 52 int st_atapibus_match __P((struct device *, struct cfdata *, void *)); 53 void st_atapibus_attach __P((struct device *, struct device *, void *)); 54 int st_atapibus_ops __P((struct st_softc *, int, int)); 55 int st_atapibus_mode_sense __P((struct st_softc *, int)); 56 int st_atapibus_mode_select __P((struct st_softc *, int)); 57 int st_atapibus_do_ms __P((struct st_softc *, int, void *, int, int)); 58 59 struct cfattach st_atapibus_ca = { 60 sizeof(struct st_softc), st_atapibus_match, st_atapibus_attach 61 }; 62 63 const struct scsipi_inquiry_pattern st_atapibus_patterns[] = { 64 {T_SEQUENTIAL, T_REMOV, 65 "", "", ""}, 66 }; 67 68 int 69 st_atapibus_match(parent, match, aux) 70 struct device *parent; 71 struct cfdata *match; 72 void *aux; 73 { 74 struct scsipibus_attach_args *sa = aux; 75 int priority; 76 77 if (scsipi_periph_bustype(sa->sa_periph) != SCSIPI_BUSTYPE_ATAPI) 78 return (0); 79 80 (void)scsipi_inqmatch(&sa->sa_inqbuf, 81 (caddr_t)st_atapibus_patterns, 82 sizeof(st_atapibus_patterns)/sizeof(st_atapibus_patterns[0]), 83 sizeof(st_atapibus_patterns[0]), &priority); 84 return (priority); 85 } 86 87 void 88 st_atapibus_attach(parent, self, aux) 89 struct device *parent, *self; 90 void *aux; 91 { 92 struct st_softc *st = (void *)self; 93 94 st->ops = st_atapibus_ops; 95 stattach(parent, st, aux); 96 } 97 98 int 99 st_atapibus_ops(st, op, flags) 100 struct st_softc *st; 101 int op; 102 int flags; 103 { 104 switch(op) { 105 case ST_OPS_RBL: 106 /* done in mode_sense */ 107 return 0; 108 case ST_OPS_MODESENSE: 109 return st_atapibus_mode_sense(st, flags); 110 case ST_OPS_MODESELECT: 111 return st_atapibus_mode_select(st, flags); 112 case ST_OPS_CMPRSS_ON: 113 case ST_OPS_CMPRSS_OFF: 114 return ENODEV; 115 default: 116 panic("st_scsibus_ops: invalid op"); 117 /* NOTREACHED */ 118 } 119 } 120 121 int 122 st_atapibus_mode_sense(st, flags) 123 struct st_softc *st; 124 int flags; 125 { 126 int count, error; 127 struct atapi_cappage cappage; 128 struct scsipi_periph *periph = st->sc_periph; 129 130 /* get drive capabilities, some drives needs this repeated */ 131 for (count = 0 ; count < 5 ; count++) { 132 error = scsipi_mode_sense(periph, SMS_DBD, 133 ATAPI_TAPE_CAP_PAGE, &cappage.header, sizeof(cappage), 134 flags | XS_CTL_DATA_ONSTACK, ST_RETRIES, ST_CTL_TIME); 135 if (error == 0) { 136 st->numblks = 0; /* unused anyway */ 137 if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK32K) 138 st->media_blksize = 32768; 139 else if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK1K) 140 st->media_blksize = 1024; 141 else if (cappage.cap4 & ATAPI_TAPE_CAP_PAGE_BLK512) 142 st->media_blksize = 512; 143 else { 144 error = ENODEV; 145 continue; 146 } 147 st->blkmin = st->blkmax = st->media_blksize; 148 st->media_density = 0; 149 if (cappage.header.dev_spec & SMH_DSP_WRITE_PROT) 150 st->flags |= ST_READONLY; 151 else 152 st->flags &= ~ST_READONLY; 153 SC_DEBUG(periph, SCSIPI_DB3, 154 ("density code %d, %d-byte blocks, write-%s, ", 155 st->media_density, st->media_blksize, 156 st->flags & ST_READONLY ? "protected" : "enabled")); 157 SC_DEBUG(periph, SCSIPI_DB3, 158 ("%sbuffered\n", 159 cappage.header.dev_spec & SMH_DSP_BUFF_MODE ? 160 "" : "un")); 161 periph->periph_flags |= PERIPH_MEDIA_LOADED; 162 return 0; 163 } 164 } 165 return error; 166 } 167 168 int 169 st_atapibus_mode_select(st, flags) 170 struct st_softc *st; 171 int flags; 172 { 173 return ENODEV; /* for now ... */ 174 } 175