scsipiconf.c revision 1.42
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 (at) 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 (at) 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
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