| 1 | /* $NetBSD: scsipiconf.c,v 1.42 2016/11/20 15:37:19 mlelstv Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1998, 1999, 2004 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; by Jason R. Thorpe of the Numerical Aerospace |
| 9 | * Simulation Facility, NASA Ames Research Center. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 30 | * POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | * Originally written by Julian Elischer (julian@tfs.com) |
| 35 | * for TRW Financial Systems for use under the MACH(2.5) operating system. |
| 36 | * |
| 37 | * TRW Financial Systems, in accordance with their agreement with Carnegie |
| 38 | * Mellon University, makes this software available to CMU to distribute |
| 39 | * or use in any manner that they see fit as long as this message is kept with |
| 40 | * the software. For this reason TFS also grants any other persons or |
| 41 | * organisations permission to use or modify this software. |
| 42 | * |
| 43 | * TFS supplies this software to be publicly redistributed |
| 44 | * on the understanding that TFS is not responsible for the correct |
| 45 | * functioning of this software in any circumstances. |
| 46 | * |
| 47 | * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 |
| 48 | */ |
| 49 | |
| 50 | #include <sys/cdefs.h> |
| 51 | __KERNEL_RCSID(0, "$NetBSD: scsipiconf.c,v 1.42 2016/11/20 15:37:19 mlelstv Exp $" ); |
| 52 | |
| 53 | #include <sys/param.h> |
| 54 | #include <sys/systm.h> |
| 55 | #include <sys/malloc.h> |
| 56 | #include <sys/module.h> |
| 57 | #include <sys/device.h> |
| 58 | #include <sys/proc.h> |
| 59 | |
| 60 | #include <dev/scsipi/scsipi_all.h> |
| 61 | #include <dev/scsipi/scsipiconf.h> |
| 62 | #include <dev/scsipi/scsipi_base.h> |
| 63 | |
| 64 | |
| 65 | /* Function pointers and stub routines for scsiverbose module */ |
| 66 | int (*scsipi_print_sense)(struct scsipi_xfer *, int) = scsipi_print_sense_stub; |
| 67 | void (*scsipi_print_sense_data)(struct scsi_sense_data *, int) = |
| 68 | scsipi_print_sense_data_stub; |
| 69 | |
| 70 | int scsi_verbose_loaded = 0; |
| 71 | |
| 72 | int |
| 73 | scsipi_print_sense_stub(struct scsipi_xfer * xs, int verbosity) |
| 74 | { |
| 75 | scsipi_load_verbose(); |
| 76 | if (scsi_verbose_loaded) |
| 77 | return scsipi_print_sense(xs, verbosity); |
| 78 | else |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | void |
| 83 | scsipi_print_sense_data_stub(struct scsi_sense_data *sense, int verbosity) |
| 84 | { |
| 85 | scsipi_load_verbose(); |
| 86 | if (scsi_verbose_loaded) |
| 87 | scsipi_print_sense_data(sense, verbosity); |
| 88 | } |
| 89 | |
| 90 | int |
| 91 | scsipi_command(struct scsipi_periph *periph, struct scsipi_generic *cmd, |
| 92 | int cmdlen, u_char *data_addr, int datalen, int retries, int timeout, |
| 93 | struct buf *bp, int flags) |
| 94 | { |
| 95 | struct scsipi_xfer *xs; |
| 96 | int rc; |
| 97 | |
| 98 | /* |
| 99 | * execute unlocked to allow waiting for memory |
| 100 | */ |
| 101 | xs = scsipi_make_xs_unlocked(periph, cmd, cmdlen, data_addr, datalen, retries, |
| 102 | timeout, bp, flags); |
| 103 | if (!xs) |
| 104 | return (ENOMEM); |
| 105 | |
| 106 | mutex_enter(chan_mtx(periph->periph_channel)); |
| 107 | rc = scsipi_execute_xs(xs); |
| 108 | mutex_exit(chan_mtx(periph->periph_channel)); |
| 109 | |
| 110 | return rc; |
| 111 | } |
| 112 | |
| 113 | /* |
| 114 | * Load the scsiverbose module |
| 115 | */ |
| 116 | void |
| 117 | scsipi_load_verbose(void) |
| 118 | { |
| 119 | if (scsi_verbose_loaded == 0) |
| 120 | module_autoload("scsiverbose" , MODULE_CLASS_MISC); |
| 121 | } |
| 122 | |
| 123 | /* |
| 124 | * allocate and init a scsipi_periph structure for a new device. |
| 125 | */ |
| 126 | struct scsipi_periph * |
| 127 | scsipi_alloc_periph(int malloc_flag) |
| 128 | { |
| 129 | struct scsipi_periph *periph; |
| 130 | u_int i; |
| 131 | |
| 132 | periph = malloc(sizeof(*periph), M_DEVBUF, malloc_flag|M_ZERO); |
| 133 | if (periph == NULL) |
| 134 | return NULL; |
| 135 | |
| 136 | periph->periph_dev = NULL; |
| 137 | |
| 138 | /* |
| 139 | * Start with one command opening. The periph driver |
| 140 | * will grow this if it knows it can take advantage of it. |
| 141 | */ |
| 142 | periph->periph_openings = 1; |
| 143 | periph->periph_active = 0; |
| 144 | |
| 145 | for (i = 0; i < PERIPH_NTAGWORDS; i++) |
| 146 | periph->periph_freetags[i] = 0xffffffff; |
| 147 | |
| 148 | TAILQ_INIT(&periph->periph_xferq); |
| 149 | callout_init(&periph->periph_callout, 0); |
| 150 | cv_init(&periph->periph_cv, "periph" ); |
| 151 | |
| 152 | return periph; |
| 153 | } |
| 154 | |
| 155 | /* |
| 156 | * cleanup and free scsipi_periph structure |
| 157 | */ |
| 158 | void |
| 159 | scsipi_free_periph(struct scsipi_periph *periph) |
| 160 | { |
| 161 | cv_destroy(&periph->periph_cv); |
| 162 | free(periph, M_DEVBUF); |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Return a priority based on how much of the inquiry data matches |
| 167 | * the patterns for the particular driver. |
| 168 | */ |
| 169 | const void * |
| 170 | scsipi_inqmatch(struct scsipi_inquiry_pattern *inqbuf, const void *base, |
| 171 | size_t nmatches, size_t matchsize, int *bestpriority) |
| 172 | { |
| 173 | u_int8_t type; |
| 174 | const struct scsipi_inquiry_pattern *bestmatch; |
| 175 | |
| 176 | /* Include the qualifier to catch vendor-unique types. */ |
| 177 | type = inqbuf->type; |
| 178 | |
| 179 | for (*bestpriority = 0, bestmatch = 0; nmatches--; |
| 180 | base = (const char *)base + matchsize) { |
| 181 | const struct scsipi_inquiry_pattern *match = base; |
| 182 | int priority, len; |
| 183 | |
| 184 | if (type != match->type) |
| 185 | continue; |
| 186 | if (inqbuf->removable != match->removable) |
| 187 | continue; |
| 188 | priority = 2; |
| 189 | len = strlen(match->vendor); |
| 190 | if (memcmp(inqbuf->vendor, match->vendor, len)) |
| 191 | continue; |
| 192 | priority += len; |
| 193 | len = strlen(match->product); |
| 194 | if (memcmp(inqbuf->product, match->product, len)) |
| 195 | continue; |
| 196 | priority += len; |
| 197 | len = strlen(match->revision); |
| 198 | if (memcmp(inqbuf->revision, match->revision, len)) |
| 199 | continue; |
| 200 | priority += len; |
| 201 | |
| 202 | #ifdef SCSIPI_DEBUG |
| 203 | printf("scsipi_inqmatch: %d/%d/%d <%s, %s, %s>\n" , |
| 204 | priority, match->type, match->removable, |
| 205 | match->vendor, match->product, match->revision); |
| 206 | #endif |
| 207 | if (priority > *bestpriority) { |
| 208 | *bestpriority = priority; |
| 209 | bestmatch = base; |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | return (bestmatch); |
| 214 | } |
| 215 | |
| 216 | const char * |
| 217 | scsipi_dtype(int type) |
| 218 | { |
| 219 | const char *dtype; |
| 220 | |
| 221 | switch (type) { |
| 222 | case T_DIRECT: |
| 223 | dtype = "disk" ; |
| 224 | break; |
| 225 | case T_SEQUENTIAL: |
| 226 | dtype = "tape" ; |
| 227 | break; |
| 228 | case T_PRINTER: |
| 229 | dtype = "printer" ; |
| 230 | break; |
| 231 | case T_PROCESSOR: |
| 232 | dtype = "processor" ; |
| 233 | break; |
| 234 | case T_WORM: |
| 235 | dtype = "worm" ; |
| 236 | break; |
| 237 | case T_CDROM: |
| 238 | dtype = "cdrom" ; |
| 239 | break; |
| 240 | case T_SCANNER: |
| 241 | dtype = "scanner" ; |
| 242 | break; |
| 243 | case T_OPTICAL: |
| 244 | dtype = "optical" ; |
| 245 | break; |
| 246 | case T_CHANGER: |
| 247 | dtype = "changer" ; |
| 248 | break; |
| 249 | case T_COMM: |
| 250 | dtype = "communication" ; |
| 251 | break; |
| 252 | case T_IT8_1: |
| 253 | case T_IT8_2: |
| 254 | dtype = "graphic arts pre-press" ; |
| 255 | break; |
| 256 | case T_STORARRAY: |
| 257 | dtype = "storage array" ; |
| 258 | break; |
| 259 | case T_ENCLOSURE: |
| 260 | dtype = "enclosure services" ; |
| 261 | break; |
| 262 | case T_SIMPLE_DIRECT: |
| 263 | dtype = "simplified direct" ; |
| 264 | break; |
| 265 | case T_OPTIC_CARD_RW: |
| 266 | dtype = "optical card r/w" ; |
| 267 | break; |
| 268 | case T_OBJECT_STORED: |
| 269 | dtype = "object-based storage" ; |
| 270 | break; |
| 271 | case T_NODEVICE: |
| 272 | panic("scsipi_dtype: impossible device type" ); |
| 273 | default: |
| 274 | dtype = "unknown" ; |
| 275 | break; |
| 276 | } |
| 277 | return (dtype); |
| 278 | } |
| 279 | |