1 /* $NetBSD: scsipiconf.c,v 1.24 2004/09/09 19:35:31 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999 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@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@tfs.com) Sept 1992 55 */ 56 57 #include <sys/cdefs.h> 58 __KERNEL_RCSID(0, "$NetBSD: scsipiconf.c,v 1.24 2004/09/09 19:35:31 bouyer 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 71 #define STRVIS_ISWHITE(x) ((x) == ' ' || (x) == '\0' || (x) == (u_char)'\377') 72 73 int 74 scsipi_command(struct scsipi_periph *periph, struct scsipi_xfer *xs, 75 struct scsipi_generic *cmd, int cmdlen, u_char *data_addr, int datalen, 76 int retries, int timeout, struct buf *bp, int flags) 77 { 78 int error; 79 80 if ((flags & XS_CTL_DATA_ONSTACK) != 0) { 81 /* 82 * If the I/O buffer is allocated on stack, the 83 * process must NOT be swapped out, as the device will 84 * be accessing the stack. 85 */ 86 PHOLD(curlwp); 87 } 88 error = (*periph->periph_channel->chan_bustype->bustype_cmd)(periph, 89 xs, cmd, cmdlen, data_addr, datalen, retries, timeout, bp, flags); 90 if ((flags & XS_CTL_DATA_ONSTACK) != 0) 91 PRELE(curlwp); 92 return (error); 93 } 94 95 /* 96 * allocate and init a scsipi_periph structure for a new device. 97 */ 98 struct scsipi_periph * 99 scsipi_alloc_periph(int malloc_flag) 100 { 101 struct scsipi_periph *periph; 102 u_int i; 103 104 periph = malloc(sizeof(*periph), M_DEVBUF, malloc_flag|M_ZERO); 105 if (periph == NULL) 106 return NULL; 107 108 periph->periph_dev = NULL; 109 110 /* 111 * Start with one command opening. The periph driver 112 * will grow this if it knows it can take advantage of it. 113 */ 114 periph->periph_openings = 1; 115 periph->periph_active = 0; 116 117 for (i = 0; i < PERIPH_NTAGWORDS; i++) 118 periph->periph_freetags[i] = 0xffffffff; 119 120 TAILQ_INIT(&periph->periph_xferq); 121 callout_init(&periph->periph_callout); 122 123 return periph; 124 } 125 126 /* 127 * Return a priority based on how much of the inquiry data matches 128 * the patterns for the particular driver. 129 */ 130 caddr_t 131 scsipi_inqmatch(struct scsipi_inquiry_pattern *inqbuf, caddr_t base, 132 int nmatches, int matchsize, int *bestpriority) 133 { 134 u_int8_t type; 135 caddr_t bestmatch; 136 137 /* Include the qualifier to catch vendor-unique types. */ 138 type = inqbuf->type; 139 140 for (*bestpriority = 0, bestmatch = 0; nmatches--; base += matchsize) { 141 struct scsipi_inquiry_pattern *match = (void *)base; 142 int priority, len; 143 144 if (type != match->type) 145 continue; 146 if (inqbuf->removable != match->removable) 147 continue; 148 priority = 2; 149 len = strlen(match->vendor); 150 if (memcmp(inqbuf->vendor, match->vendor, len)) 151 continue; 152 priority += len; 153 len = strlen(match->product); 154 if (memcmp(inqbuf->product, match->product, len)) 155 continue; 156 priority += len; 157 len = strlen(match->revision); 158 if (memcmp(inqbuf->revision, match->revision, len)) 159 continue; 160 priority += len; 161 162 #ifdef SCSIPI_DEBUG 163 printf("scsipi_inqmatch: %d/%d/%d <%s, %s, %s>\n", 164 priority, match->type, match->removable, 165 match->vendor, match->product, match->revision); 166 #endif 167 if (priority > *bestpriority) { 168 *bestpriority = priority; 169 bestmatch = base; 170 } 171 } 172 173 return (bestmatch); 174 } 175 176 const char * 177 scsipi_dtype(int type) 178 { 179 const char *dtype; 180 181 switch (type) { 182 case T_DIRECT: 183 dtype = "disk"; 184 break; 185 case T_SEQUENTIAL: 186 dtype = "tape"; 187 break; 188 case T_PRINTER: 189 dtype = "printer"; 190 break; 191 case T_PROCESSOR: 192 dtype = "processor"; 193 break; 194 case T_WORM: 195 dtype = "worm"; 196 break; 197 case T_CDROM: 198 dtype = "cdrom"; 199 break; 200 case T_SCANNER: 201 dtype = "scanner"; 202 break; 203 case T_OPTICAL: 204 dtype = "optical"; 205 break; 206 case T_CHANGER: 207 dtype = "changer"; 208 break; 209 case T_COMM: 210 dtype = "communication"; 211 break; 212 case T_IT8_1: 213 case T_IT8_2: 214 dtype = "graphic arts pre-press"; 215 break; 216 case T_STORARRAY: 217 dtype = "storage array"; 218 break; 219 case T_ENCLOSURE: 220 dtype = "enclosure services"; 221 break; 222 case T_SIMPLE_DIRECT: 223 dtype = "simplified direct"; 224 break; 225 case T_OPTIC_CARD_RW: 226 dtype = "optical card r/w"; 227 break; 228 case T_OBJECT_STORED: 229 dtype = "object-based storage"; 230 break; 231 case T_NODEVICE: 232 panic("scsipi_dtype: impossible device type"); 233 default: 234 dtype = "unknown"; 235 break; 236 } 237 return (dtype); 238 } 239 240 void 241 scsipi_strvis(u_char *dst, int dlen, u_char *src, int slen) 242 { 243 244 /* Trim leading and trailing blanks and NULs. */ 245 while (slen > 0 && STRVIS_ISWHITE(src[0])) 246 ++src, --slen; 247 while (slen > 0 && STRVIS_ISWHITE(src[slen - 1])) 248 --slen; 249 250 while (slen > 0) { 251 if (*src < 0x20 || *src >= 0x80) { 252 /* non-printable characters */ 253 dlen -= 4; 254 if (dlen < 1) 255 break; 256 *dst++ = '\\'; 257 *dst++ = ((*src & 0300) >> 6) + '0'; 258 *dst++ = ((*src & 0070) >> 3) + '0'; 259 *dst++ = ((*src & 0007) >> 0) + '0'; 260 } else if (*src == '\\') { 261 /* quote characters */ 262 dlen -= 2; 263 if (dlen < 1) 264 break; 265 *dst++ = '\\'; 266 *dst++ = '\\'; 267 } else { 268 /* normal characters */ 269 if (--dlen < 1) 270 break; 271 *dst++ = *src; 272 } 273 ++src, --slen; 274 } 275 276 *dst++ = 0; 277 } 278