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 80 /* See if the period is in the "exception" table */ 81 for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) { 82 83 if (period_factor == scsi_syncrates[i].period_factor) { 84 /* Period in kHz */ 85 return (100000000 / scsi_syncrates[i].period); 86 } 87 } 88 89 /* 90 * Wasn't in the table, so use the standard 91 * 4 times conversion. 92 */ 93 return (10000000 / (period_factor * 4 * 10)); 94 } 95 96 97 static void 98 copy_mem_info(struct info_str *info, char *data, int len) 99 { 100 if (info->pos + len > info->offset + info->length) 101 len = info->offset + info->length - info->pos; 102 103 if (info->pos + len < info->offset) { 104 info->pos += len; 105 return; 106 } 107 108 if (info->pos < info->offset) { 109 off_t partial; 110 111 partial = info->offset - info->pos; 112 data += partial; 113 info->pos += partial; 114 len -= partial; 115 } 116 117 if (len > 0) { 118 memcpy(info->buffer, data, len); 119 info->pos += len; 120 info->buffer += len; 121 } 122 } 123 124 static int 125 copy_info(struct info_str *info, char *fmt, ...) 126 { 127 va_list args; 128 char buf[256]; 129 int len; 130 131 va_start(args, fmt); 132 len = vsprintf(buf, fmt, args); 133 va_end(args); 134 135 copy_mem_info(info, buf, len); 136 return (len); 137 } 138 139 void 140 ahd_format_transinfo(struct info_str *info, struct ahd_transinfo *tinfo) 141 { 142 u_int speed; 143 u_int freq; 144 u_int mb; 145 146 if (tinfo->period == AHD_PERIOD_UNKNOWN) { 147 copy_info(info, "Renegotiation Pending\n"); 148 return; 149 } 150 speed = 3300; 151 freq = 0; 152 if (tinfo->offset != 0) { 153 freq = ahd_calc_syncsrate(tinfo->period); 154 speed = freq; 155 } 156 speed *= (0x01 << tinfo->width); 157 mb = speed / 1000; 158 if (mb > 0) 159 copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000); 160 else 161 copy_info(info, "%dKB/s transfers", speed); 162 163 if (freq != 0) { 164 int printed_options; 165 166 printed_options = 0; 167 copy_info(info, " (%d.%03dMHz", freq / 1000, freq % 1000); 168 if ((tinfo->ppr_options & MSG_EXT_PPR_RD_STRM) != 0) { 169 copy_info(info, " RDSTRM"); 170 printed_options++; 171 } 172 if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) { 173 copy_info(info, "%s", printed_options ? "|DT" : " DT"); 174 printed_options++; 175 } 176 if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) { 177 copy_info(info, "%s", printed_options ? "|IU" : " IU"); 178 printed_options++; 179 } 180 if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) { 181 copy_info(info, "%s", 182 printed_options ? "|RTI" : " RTI"); 183 printed_options++; 184 } 185 if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) { 186 copy_info(info, "%s", 187 printed_options ? "|QAS" : " QAS"); 188 printed_options++; 189 } 190 } 191 192 if (tinfo->width > 0) { 193 if (freq != 0) { 194 copy_info(info, ", "); 195 } else { 196 copy_info(info, " ("); 197 } 198 copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width)); 199 } else if (freq != 0) { 200 copy_info(info, ")"); 201 } 202 copy_info(info, "\n"); 203 } 204 205 static void 206 ahd_dump_target_state(struct ahd_softc *ahd, struct info_str *info, 207 u_int our_id, char channel, u_int target_id, 208 u_int target_offset) 209 { 210 struct ahd_linux_target *targ; 211 struct scsi_target *starget; 212 struct ahd_initiator_tinfo *tinfo; 213 struct ahd_tmode_tstate *tstate; 214 int lun; 215 216 tinfo = ahd_fetch_transinfo(ahd, channel, our_id, 217 target_id, &tstate); 218 copy_info(info, "Target %d Negotiation Settings\n", target_id); 219 copy_info(info, "\tUser: "); 220 ahd_format_transinfo(info, &tinfo->user); 221 starget = ahd->platform_data->starget[target_offset]; 222 if (starget == NULL) 223 return; 224 targ = scsi_transport_target_data(starget); 225 226 copy_info(info, "\tGoal: "); 227 ahd_format_transinfo(info, &tinfo->goal); 228 copy_info(info, "\tCurr: "); 229 ahd_format_transinfo(info, &tinfo->curr); 230 231 for (lun = 0; lun < AHD_NUM_LUNS; lun++) { 232 struct scsi_device *dev; 233 234 dev = targ->sdev[lun]; 235 236 if (dev == NULL) 237 continue; 238 239 ahd_dump_device_state(info, dev); 240 } 241 } 242 243 static void 244 ahd_dump_device_state(struct info_str *info, struct scsi_device *sdev) 245 { 246 struct ahd_linux_device *dev = scsi_transport_device_data(sdev); 247 248 copy_info(info, "\tChannel %c Target %d Lun %d Settings\n", 249 sdev->sdev_target->channel + 'A', 250 sdev->sdev_target->id, sdev->lun); 251 252 copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued); 253 copy_info(info, "\t\tCommands Active %d\n", dev->active); 254 copy_info(info, "\t\tCommand Openings %d\n", dev->openings); 255 copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags); 256 copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen); 257 } 258 259 static int 260 ahd_proc_write_seeprom(struct ahd_softc *ahd, char *buffer, int length) 261 { 262 ahd_mode_state saved_modes; 263 int have_seeprom; 264 u_long s; 265 int paused; 266 int written; 267 268 /* Default to failure. */ 269 written = -EINVAL; 270 ahd_lock(ahd, &s); 271 paused = ahd_is_paused(ahd); 272 if (!paused) 273 ahd_pause(ahd); 274 275 saved_modes = ahd_save_modes(ahd); 276 ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI); 277 if (length != sizeof(struct seeprom_config)) { 278 printf("ahd_proc_write_seeprom: incorrect buffer size\n"); 279 goto done; 280 } 281 282 have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer); 283 if (have_seeprom == 0) { 284 printf("ahd_proc_write_seeprom: cksum verification failed\n"); 285 goto done; 286 } 287 288 have_seeprom = ahd_acquire_seeprom(ahd); 289 if (!have_seeprom) { 290 printf("ahd_proc_write_seeprom: No Serial EEPROM\n"); 291 goto done; 292 } else { 293 u_int start_addr; 294 295 if (ahd->seep_config == NULL) { 296 ahd->seep_config = malloc(sizeof(*ahd->seep_config), 297 M_DEVBUF, M_NOWAIT); 298 if (ahd->seep_config == NULL) { 299 printf("aic79xx: Unable to allocate serial " 300 "eeprom buffer. Write failing\n"); 301 goto done; 302 } 303 } 304 printf("aic79xx: Writing Serial EEPROM\n"); 305 start_addr = 32 * (ahd->channel - 'A'); 306 ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr, 307 sizeof(struct seeprom_config)/2); 308 ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config, 309 start_addr, sizeof(struct seeprom_config)/2, 310 /*ByteStream*/FALSE); 311 ahd_release_seeprom(ahd); 312 written = length; 313 } 314 315 done: 316 ahd_restore_modes(ahd, saved_modes); 317 if (!paused) 318 ahd_unpause(ahd); 319 ahd_unlock(ahd, &s); 320 return (written); 321 } 322 /* 323 * Return information to handle /proc support for the driver. 324 */ 325 int 326 ahd_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start, 327 off_t offset, int length, int inout) 328 { 329 struct ahd_softc *ahd = *(struct ahd_softc **)shost->hostdata; 330 struct info_str info; 331 char ahd_info[256]; 332 u_int max_targ; 333 u_int i; 334 int retval; 335 336 /* Has data been written to the file? */ 337 if (inout == TRUE) { 338 retval = ahd_proc_write_seeprom(ahd, buffer, length); 339 goto done; 340 } 341 342 if (start) 343 *start = buffer; 344 345 info.buffer = buffer; 346 info.length = length; 347 info.offset = offset; 348 info.pos = 0; 349 350 copy_info(&info, "Adaptec AIC79xx driver version: %s\n", 351 AIC79XX_DRIVER_VERSION); 352 copy_info(&info, "%s\n", ahd->description); 353 ahd_controller_info(ahd, ahd_info); 354 copy_info(&info, "%s\n", ahd_info); 355 copy_info(&info, "Allocated SCBs: %d, SG List Length: %d\n\n", 356 ahd->scb_data.numscbs, AHD_NSEG); 357 358 max_targ = 15; 359 360 if (ahd->seep_config == NULL) 361 copy_info(&info, "No Serial EEPROM\n"); 362 else { 363 copy_info(&info, "Serial EEPROM:\n"); 364 for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) { 365 if (((i % 8) == 0) && (i != 0)) { 366 copy_info(&info, "\n"); 367 } 368 copy_info(&info, "0x%.4x ", 369 ((uint16_t*)ahd->seep_config)[i]); 370 } 371 copy_info(&info, "\n"); 372 } 373 copy_info(&info, "\n"); 374 375 if ((ahd->features & AHD_WIDE) == 0) 376 max_targ = 7; 377 378 for (i = 0; i <= max_targ; i++) { 379 380 ahd_dump_target_state(ahd, &info, ahd->our_id, 'A', 381 /*target_id*/i, /*target_offset*/i); 382 } 383 retval = info.pos > info.offset ? info.pos - info.offset : 0; 384 done: 385 return (retval); 386 } 387