scsipiconf.c revision 1.40.36.1
1 /* $NetBSD: scsipiconf.c,v 1.40.36.1 2016/05/29 08:44:31 skrll 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 1.40.36.1 2016/05/29 08:44:31 skrll 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 scsipi_print_sense_stub(struct scsipi_xfer * xs, int verbosity) 73 { 74 scsipi_load_verbose(); 75 if (scsi_verbose_loaded) 76 return scsipi_print_sense(xs, verbosity); 77 else 78 return 0; 79 } 80 81 void scsipi_print_sense_data_stub(struct scsi_sense_data *sense, int verbosity) 82 { 83 scsipi_load_verbose(); 84 if (scsi_verbose_loaded) 85 scsipi_print_sense_data(sense, verbosity); 86 } 87 88 int 89 scsipi_command(struct scsipi_periph *periph, struct scsipi_generic *cmd, 90 int cmdlen, u_char *data_addr, int datalen, int retries, int timeout, 91 struct buf *bp, int flags) 92 { 93 struct scsipi_xfer *xs; 94 95 xs = scsipi_make_xs(periph, cmd, cmdlen, data_addr, datalen, retries, 96 timeout, bp, flags); 97 if (!xs) 98 return (ENOMEM); 99 100 return (scsipi_execute_xs(xs)); 101 } 102 103 /* 104 * Load the scsiverbose module 105 */ 106 void 107 scsipi_load_verbose(void) 108 { 109 if (scsi_verbose_loaded == 0) 110 module_autoload("scsiverbose", MODULE_CLASS_MISC); 111 } 112 113 /* 114 * allocate and init a scsipi_periph structure for a new device. 115 */ 116 struct scsipi_periph * 117 scsipi_alloc_periph(int malloc_flag) 118 { 119 struct scsipi_periph *periph; 120 u_int i; 121 122 periph = malloc(sizeof(*periph), M_DEVBUF, malloc_flag|M_ZERO); 123 if (periph == NULL) 124 return NULL; 125 126 periph->periph_dev = NULL; 127 128 /* 129 * Start with one command opening. The periph driver 130 * will grow this if it knows it can take advantage of it. 131 */ 132 periph->periph_openings = 1; 133 periph->periph_active = 0; 134 135 for (i = 0; i < PERIPH_NTAGWORDS; i++) 136 periph->periph_freetags[i] = 0xffffffff; 137 138 TAILQ_INIT(&periph->periph_xferq); 139 callout_init(&periph->periph_callout, 0); 140 141 return periph; 142 } 143 144 /* 145 * Return a priority based on how much of the inquiry data matches 146 * the patterns for the particular driver. 147 */ 148 const void * 149 scsipi_inqmatch(struct scsipi_inquiry_pattern *inqbuf, const void *base, 150 size_t nmatches, size_t matchsize, int *bestpriority) 151 { 152 u_int8_t type; 153 const struct scsipi_inquiry_pattern *bestmatch; 154 155 /* Include the qualifier to catch vendor-unique types. */ 156 type = inqbuf->type; 157 158 for (*bestpriority = 0, bestmatch = 0; nmatches--; 159 base = (const char *)base + matchsize) { 160 const struct scsipi_inquiry_pattern *match = base; 161 int priority, len; 162 163 if (type != match->type) 164 continue; 165 if (inqbuf->removable != match->removable) 166 continue; 167 priority = 2; 168 len = strlen(match->vendor); 169 if (memcmp(inqbuf->vendor, match->vendor, len)) 170 continue; 171 priority += len; 172 len = strlen(match->product); 173 if (memcmp(inqbuf->product, match->product, len)) 174 continue; 175 priority += len; 176 len = strlen(match->revision); 177 if (memcmp(inqbuf->revision, match->revision, len)) 178 continue; 179 priority += len; 180 181 #ifdef SCSIPI_DEBUG 182 printf("scsipi_inqmatch: %d/%d/%d <%s, %s, %s>\n", 183 priority, match->type, match->removable, 184 match->vendor, match->product, match->revision); 185 #endif 186 if (priority > *bestpriority) { 187 *bestpriority = priority; 188 bestmatch = base; 189 } 190 } 191 192 return (bestmatch); 193 } 194 195 const char * 196 scsipi_dtype(int type) 197 { 198 const char *dtype; 199 200 switch (type) { 201 case T_DIRECT: 202 dtype = "disk"; 203 break; 204 case T_SEQUENTIAL: 205 dtype = "tape"; 206 break; 207 case T_PRINTER: 208 dtype = "printer"; 209 break; 210 case T_PROCESSOR: 211 dtype = "processor"; 212 break; 213 case T_WORM: 214 dtype = "worm"; 215 break; 216 case T_CDROM: 217 dtype = "cdrom"; 218 break; 219 case T_SCANNER: 220 dtype = "scanner"; 221 break; 222 case T_OPTICAL: 223 dtype = "optical"; 224 break; 225 case T_CHANGER: 226 dtype = "changer"; 227 break; 228 case T_COMM: 229 dtype = "communication"; 230 break; 231 case T_IT8_1: 232 case T_IT8_2: 233 dtype = "graphic arts pre-press"; 234 break; 235 case T_STORARRAY: 236 dtype = "storage array"; 237 break; 238 case T_ENCLOSURE: 239 dtype = "enclosure services"; 240 break; 241 case T_SIMPLE_DIRECT: 242 dtype = "simplified direct"; 243 break; 244 case T_OPTIC_CARD_RW: 245 dtype = "optical card r/w"; 246 break; 247 case T_OBJECT_STORED: 248 dtype = "object-based storage"; 249 break; 250 case T_NODEVICE: 251 panic("scsipi_dtype: impossible device type"); 252 default: 253 dtype = "unknown"; 254 break; 255 } 256 return (dtype); 257 } 258
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