1 /* 2 * Copyright (c) 2000-2001 Adaptec Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions, and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * substantially similar to the "NO WARRANTY" disclaimer below 13 * ("Disclaimer") and any redistribution must be conditioned upon 14 * including a substantially similar Disclaimer requirement for further 15 * binary redistribution. 16 * 3. Neither the names of the above-listed copyright holders nor the names 17 * of any contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * Alternatively, this software may be distributed under the terms of the 21 * GNU General Public License ("GPL") version 2 as published by the Free 22 * Software Foundation. 23 * 24 * NO WARRANTY 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 33 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 34 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGES. 36 * 37 * String handling code courtesy of Gerard Roudier's <groudier@club-internet.fr> 38 * sym driver. 39 * 40 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_proc.c#19 $ 41 */ 42 #include "aic79xx_osm.h" 43 #include "aic79xx_inline.h" 44 45 static void copy_mem_info(struct info_str *info, char *data, int len); 46 static int copy_info(struct info_str *info, char *fmt, ...); 47 static void ahd_dump_target_state(struct ahd_softc *ahd, 48 struct info_str *info, 49 u_int our_id, char channel, 50 u_int target_id, u_int target_offset); 51 static void ahd_dump_device_state(struct info_str *info, 52 struct scsi_device *sdev); 53 static int ahd_proc_write_seeprom(struct ahd_softc *ahd, 54 char *buffer, int length); 55 56 /* 57 * Table of syncrates that don't follow the "divisible by 4" 58 * rule. This table will be expanded in future SCSI specs. 59 */ 60 static struct { 61 u_int period_factor; 62 u_int period; /* in 100ths of ns */ 63 } scsi_syncrates[] = { 64 { 0x08, 625 }, /* FAST-160 */ 65 { 0x09, 1250 }, /* FAST-80 */ 66 { 0x0a, 2500 }, /* FAST-40 40MHz */ 67 { 0x0b, 3030 }, /* FAST-40 33MHz */ 68 { 0x0c, 5000 } /* FAST-20 */ 69 }; 70 71 /* 72 * Return the frequency in kHz corresponding to the given 73 * sync period factor. 74 */ 75 static u_int 76 ahd_calc_syncsrate(u_int period_factor) 77 { 78 int i; 79 int num_syncrates; 80 81 num_syncrates = sizeof(scsi_syncrates) / sizeof(scsi_syncrates[0]); 82 /* See if the period is in the "exception" table */ 83 for (i = 0; i < num_syncrates; i++) { 84 85 if (period_factor == scsi_syncrates[i].period_factor) { 86 /* Period in kHz */ 87 return (100000000 / scsi_syncrates[i].period); 88 } 89 } 90 91 /* 92 * Wasn't in the table, so use the standard 93 * 4 times conversion. 94 */ 95 return (10000000 / (period_factor * 4 * 10)); 96 } 97 98 99 static void 100 copy_mem_info(struct info_str *info, char *data, int len) 101 { 102 if (info->pos + len > info->offset + info->length) 103 len = info->offset + info->length - info->pos; 104 105 if (info->pos + len < info->offset) { 106 info->pos += len; 107 return; 108 } 109 110 if (info->pos < info->offset) { 111 off_t partial; 112 113 partial = info->offset - info->pos; 114 data += partial; 115 info->pos += partial; 116 len -= partial; 117 } 118 119 if (len > 0) { 120 memcpy(info->buffer, data, len); 121 info->pos += len; 122 info->buffer += len; 123 } 124 } 125 126 static int 127 copy_info(struct info_str *info, char *fmt, ...) 128 { 129 va_list args; 130 char buf[256]; 131 int len; 132 133 va_start(args, fmt); 134 len = vsprintf(buf, fmt, args); 135 va_end(args); 136 137 copy_mem_info(info, buf, len); 138 return (len); 139 } 140 141 void 142 ahd_format_transinfo(struct info_str *info, struct ahd_transinfo *tinfo) 143 { 144 u_int speed; 145 u_int freq; 146 u_int mb; 147 148 if (tinfo->period == AHD_PERIOD_UNKNOWN) { 149 copy_info(info, "Renegotiation Pending\n"); 150 return; 151 } 152 speed = 3300; 153 freq = 0; 154 if (tinfo->offset != 0) { 155 freq = ahd_calc_syncsrate(tinfo->period); 156 speed = freq; 157 } 158 speed *= (0x01 << tinfo->width); 159 mb = speed / 1000; 160 if (mb > 0) 161 copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000); 162 else 163 copy_info(info, "%dKB/s transfers", speed); 164 165 if (freq != 0) { 166 int printed_options; 167 168 printed_options = 0; 169 copy_info(info, " (%d.%03dMHz", freq / 1000, freq % 1000); 170 if ((tinfo->ppr_options & MSG_EXT_PPR_RD_STRM) != 0) { 171 copy_info(info, " RDSTRM"); 172 printed_options++; 173 } 174 if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) { 175 copy_info(info, "%s", printed_options ? "|DT" : " DT"); 176 printed_options++; 177 } 178 if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 179 copy_info(info, "%s", printed_options ? "|IU" : " IU"); 180 printed_options++; 181 } 182 if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) { 183 copy_info(info, "%s", 184 printed_options ? "|RTI" : " RTI"); 185 printed_options++; 186 } 187 if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) { 188 copy_info(info, "%s", 189 printed_options ? "|QAS" : " QAS"); 190 printed_options++; 191 } 192 } 193 194 if (tinfo->width > 0) { 195 if (freq != 0) { 196 copy_info(info, ", "); 197 } else { 198 copy_info(info, " ("); 199 } 200 copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width)); 201 } else if (freq != 0) { 202 copy_info(info, ")"); 203 } 204 copy_info(info, "\n"); 205 } 206 207 static void 208 ahd_dump_target_state(struct ahd_softc *ahd, struct info_str *info, 209 u_int our_id, char channel, u_int target_id, 210 u_int target_offset) 211 { 212 struct ahd_linux_target *targ; 213 struct scsi_target *starget; 214 struct ahd_initiator_tinfo *tinfo; 215 struct ahd_tmode_tstate *tstate; 216 int lun; 217 218 tinfo = ahd_fetch_transinfo(ahd, channel, our_id, 219 target_id, &tstate); 220 copy_info(info, "Target %d Negotiation Settings\n", target_id); 221 copy_info(info, "\tUser: "); 222 ahd_format_transinfo(info, &tinfo->user); 223 starget = ahd->platform_data->starget[target_offset]; 224 if (starget == NULL) 225 return; 226 targ = scsi_transport_target_data(starget); 227 228 copy_info(info, "\tGoal: "); 229 ahd_format_transinfo(info, &tinfo->goal); 230 copy_info(info, "\tCurr: "); 231 ahd_format_transinfo(info, &tinfo->curr); 232 233 for (lun = 0; lun < AHD_NUM_LUNS; lun++) { 234 struct scsi_device *dev; 235 236 dev = targ->sdev[lun]; 237 238 if (dev == NULL) 239 continue; 240 241 ahd_dump_device_state(info, dev); 242 } 243 } 244 245 static void 246 ahd_dump_device_state(struct info_str *info, struct scsi_device *sdev) 247 { 248 struct ahd_linux_device *dev = scsi_transport_device_data(sdev); 249 250 copy_info(info, "\tChannel %c Target %d Lun %d Settings\n", 251 sdev->sdev_target->channel + 'A', 252 sdev->sdev_target->id, sdev->lun); 253 254 copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued); 255 copy_info(info, "\t\tCommands Active %d\n", dev->active); 256 copy_info(info, "\t\tCommand Openings %d\n", dev->openings); 257 copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags); 258 copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen); 259 } 260 261 static int 262 ahd_proc_write_seeprom(struct ahd_softc *ahd, char *buffer, int length) 263 { 264 ahd_mode_state saved_modes; 265 int have_seeprom; 266 u_long s; 267 int paused; 268 int written; 269 270 /* Default to failure. */ 271 written = -EINVAL; 272 ahd_lock(ahd, &s); 273 paused = ahd_is_paused(ahd); 274 if (!paused) 275 ahd_pause(ahd); 276 277 saved_modes = ahd_save_modes(ahd); 278 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 279 if (length != sizeof(struct seeprom_config)) { 280 printf("ahd_proc_write_seeprom: incorrect buffer size\n"); 281 goto done; 282 } 283 284 have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer); 285 if (have_seeprom == 0) { 286 printf("ahd_proc_write_seeprom: cksum verification failed\n"); 287 goto done; 288 } 289 290 have_seeprom = ahd_acquire_seeprom(ahd); 291 if (!have_seeprom) { 292 printf("ahd_proc_write_seeprom: No Serial EEPROM\n"); 293 goto done; 294 } else { 295 u_int start_addr; 296 297 if (ahd->seep_config == NULL) { 298 ahd->seep_config = malloc(sizeof(*ahd->seep_config), 299 M_DEVBUF, M_NOWAIT); 300 if (ahd->seep_config == NULL) { 301 printf("aic79xx: Unable to allocate serial " 302 "eeprom buffer. Write failing\n"); 303 goto done; 304 } 305 } 306 printf("aic79xx: Writing Serial EEPROM\n"); 307 start_addr = 32 * (ahd->channel - 'A'); 308 ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr, 309 sizeof(struct seeprom_config)/2); 310 ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config, 311 start_addr, sizeof(struct seeprom_config)/2, 312 /*ByteStream*/FALSE); 313 ahd_release_seeprom(ahd); 314 written = length; 315 } 316 317 done: 318 ahd_restore_modes(ahd, saved_modes); 319 if (!paused) 320 ahd_unpause(ahd); 321 ahd_unlock(ahd, &s); 322 return (written); 323 } 324 /* 325 * Return information to handle /proc support for the driver. 326 */ 327 int 328 ahd_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start, 329 off_t offset, int length, int inout) 330 { 331 struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; 332 struct info_str info; 333 char ahd_info[256]; 334 u_int max_targ; 335 u_int i; 336 int retval; 337 338 /* Has data been written to the file? */ 339 if (inout == TRUE) { 340 retval = ahd_proc_write_seeprom(ahd, buffer, length); 341 goto done; 342 } 343 344 if (start) 345 *start = buffer; 346 347 info.buffer = buffer; 348 info.length = length; 349 info.offset = offset; 350 info.pos = 0; 351 352 copy_info(&info, "Adaptec AIC79xx driver version: %s\n", 353 AIC79XX_DRIVER_VERSION); 354 copy_info(&info, "%s\n", ahd->description); 355 ahd_controller_info(ahd, ahd_info); 356 copy_info(&info, "%s\n", ahd_info); 357 copy_info(&info, "Allocated SCBs: %d, SG List Length: %d\n\n", 358 ahd->scb_data.numscbs, AHD_NSEG); 359 360 max_targ = 15; 361 362 if (ahd->seep_config == NULL) 363 copy_info(&info, "No Serial EEPROM\n"); 364 else { 365 copy_info(&info, "Serial EEPROM:\n"); 366 for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) { 367 if (((i % 8) == 0) && (i != 0)) { 368 copy_info(&info, "\n"); 369 } 370 copy_info(&info, "0x%.4x ", 371 ((uint16_t*)ahd->seep_config)[i]); 372 } 373 copy_info(&info, "\n"); 374 } 375 copy_info(&info, "\n"); 376 377 if ((ahd->features & AHD_WIDE) == 0) 378 max_targ = 7; 379 380 for (i = 0; i <= max_targ; i++) { 381 382 ahd_dump_target_state(ahd, &info, ahd->our_id, 'A', 383 /*target_id*/i, /*target_offset*/i); 384 } 385 retval = info.pos > info.offset ? info.pos - info.offset : 0; 386 done: 387 return (retval); 388 } 389