scsipiconf.c revision 1.26
1 /* $NetBSD: scsipiconf.c,v 1.26 2004/09/17 23:43:17 mycroft 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * Originally written by Julian Elischer (julian (at) tfs.com) 42 * for TRW Financial Systems for use under the MACH(2.5) operating system. 43 * 44 * TRW Financial Systems, in accordance with their agreement with Carnegie 45 * Mellon University, makes this software available to CMU to distribute 46 * or use in any manner that they see fit as long as this message is kept with 47 * the software. For this reason TFS also grants any other persons or 48 * organisations permission to use or modify this software. 49 * 50 * TFS supplies this software to be publicly redistributed 51 * on the understanding that TFS is not responsible for the correct 52 * functioning of this software in any circumstances. 53 * 54 * Ported to run under 386BSD by Julian Elischer (julian (at) tfs.com) Sept 1992 55 */ 56 57 #include <sys/cdefs.h> 58 __KERNEL_RCSID(0, "$NetBSD: scsipiconf.c,v 1.26 2004/09/17 23:43:17 mycroft Exp $"); 59 60 #include <sys/param.h> 61 #include <sys/systm.h> 62 #include <sys/malloc.h> 63 #include <sys/device.h> 64 #include <sys/proc.h> 65 66 #include <uvm/uvm_extern.h> 67 68 #include <dev/scsipi/scsipi_all.h> 69 #include <dev/scsipi/scsipiconf.h> 70 #include <dev/scsipi/scsipi_base.h> 71 72 #define STRVIS_ISWHITE(x) ((x) == ' ' || (x) == '\0' || (x) == (u_char)'\377') 73 74 int 75 scsipi_command(struct scsipi_periph *periph, struct scsipi_generic *cmd, 76 int cmdlen, u_char *data_addr, int datalen, int retries, int timeout, 77 struct buf *bp, int flags) 78 { 79 struct scsipi_xfer *xs; 80 81 xs = scsipi_make_xs(periph, cmd, cmdlen, data_addr, datalen, retries, 82 timeout, bp, flags); 83 if (!xs) 84 return (ENOMEM); 85 86 return (scsipi_execute_xs(xs)); 87 } 88 89 /* 90 * allocate and init a scsipi_periph structure for a new device. 91 */ 92 struct scsipi_periph * 93 scsipi_alloc_periph(int malloc_flag) 94 { 95 struct scsipi_periph *periph; 96 u_int i; 97 98 periph = malloc(sizeof(*periph), M_DEVBUF, malloc_flag|M_ZERO); 99 if (periph == NULL) 100 return NULL; 101 102 periph->periph_dev = NULL; 103 104 /* 105 * Start with one command opening. The periph driver 106 * will grow this if it knows it can take advantage of it. 107 */ 108 periph->periph_openings = 1; 109 periph->periph_active = 0; 110 111 for (i = 0; i < PERIPH_NTAGWORDS; i++) 112 periph->periph_freetags[i] = 0xffffffff; 113 114 TAILQ_INIT(&periph->periph_xferq); 115 callout_init(&periph->periph_callout); 116 117 return periph; 118 } 119 120 /* 121 * Return a priority based on how much of the inquiry data matches 122 * the patterns for the particular driver. 123 */ 124 caddr_t 125 scsipi_inqmatch(struct scsipi_inquiry_pattern *inqbuf, caddr_t base, 126 int nmatches, int matchsize, int *bestpriority) 127 { 128 u_int8_t type; 129 caddr_t bestmatch; 130 131 /* Include the qualifier to catch vendor-unique types. */ 132 type = inqbuf->type; 133 134 for (*bestpriority = 0, bestmatch = 0; nmatches--; base += matchsize) { 135 struct scsipi_inquiry_pattern *match = (void *)base; 136 int priority, len; 137 138 if (type != match->type) 139 continue; 140 if (inqbuf->removable != match->removable) 141 continue; 142 priority = 2; 143 len = strlen(match->vendor); 144 if (memcmp(inqbuf->vendor, match->vendor, len)) 145 continue; 146 priority += len; 147 len = strlen(match->product); 148 if (memcmp(inqbuf->product, match->product, len)) 149 continue; 150 priority += len; 151 len = strlen(match->revision); 152 if (memcmp(inqbuf->revision, match->revision, len)) 153 continue; 154 priority += len; 155 156 #ifdef SCSIPI_DEBUG 157 printf("scsipi_inqmatch: %d/%d/%d <%s, %s, %s>\n", 158 priority, match->type, match->removable, 159 match->vendor, match->product, match->revision); 160 #endif 161 if (priority > *bestpriority) { 162 *bestpriority = priority; 163 bestmatch = base; 164 } 165 } 166 167 return (bestmatch); 168 } 169 170 const char * 171 scsipi_dtype(int type) 172 { 173 const char *dtype; 174 175 switch (type) { 176 case T_DIRECT: 177 dtype = "disk"; 178 break; 179 case T_SEQUENTIAL: 180 dtype = "tape"; 181 break; 182 case T_PRINTER: 183 dtype = "printer"; 184 break; 185 case T_PROCESSOR: 186 dtype = "processor"; 187 break; 188 case T_WORM: 189 dtype = "worm"; 190 break; 191 case T_CDROM: 192 dtype = "cdrom"; 193 break; 194 case T_SCANNER: 195 dtype = "scanner"; 196 break; 197 case T_OPTICAL: 198 dtype = "optical"; 199 break; 200 case T_CHANGER: 201 dtype = "changer"; 202 break; 203 case T_COMM: 204 dtype = "communication"; 205 break; 206 case T_IT8_1: 207 case T_IT8_2: 208 dtype = "graphic arts pre-press"; 209 break; 210 case T_STORARRAY: 211 dtype = "storage array"; 212 break; 213 case T_ENCLOSURE: 214 dtype = "enclosure services"; 215 break; 216 case T_SIMPLE_DIRECT: 217 dtype = "simplified direct"; 218 break; 219 case T_OPTIC_CARD_RW: 220 dtype = "optical card r/w"; 221 break; 222 case T_OBJECT_STORED: 223 dtype = "object-based storage"; 224 break; 225 case T_NODEVICE: 226 panic("scsipi_dtype: impossible device type"); 227 default: 228 dtype = "unknown"; 229 break; 230 } 231 return (dtype); 232 } 233 234 void 235 scsipi_strvis(u_char *dst, int dlen, u_char *src, int slen) 236 { 237 238 /* Trim leading and trailing blanks and NULs. */ 239 while (slen > 0 && STRVIS_ISWHITE(src[0])) 240 ++src, --slen; 241 while (slen > 0 && STRVIS_ISWHITE(src[slen - 1])) 242 --slen; 243 244 while (slen > 0) { 245 if (*src < 0x20 || *src >= 0x80) { 246 /* non-printable characters */ 247 dlen -= 4; 248 if (dlen < 1) 249 break; 250 *dst++ = '\\'; 251 *dst++ = ((*src & 0300) >> 6) + '0'; 252 *dst++ = ((*src & 0070) >> 3) + '0'; 253 *dst++ = ((*src & 0007) >> 0) + '0'; 254 } else if (*src == '\\') { 255 /* quote characters */ 256 dlen -= 2; 257 if (dlen < 1) 258 break; 259 *dst++ = '\\'; 260 *dst++ = '\\'; 261 } else { 262 /* normal characters */ 263 if (--dlen < 1) 264 break; 265 *dst++ = *src; 266 } 267 ++src, --slen; 268 } 269 270 *dst++ = 0; 271 } 272
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