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/aic7xxx_proc.c#29 $ 41 */ 42#include "aic7xxx_osm.h" 43#include "aic7xxx_inline.h" 44#include "aic7xxx_93cx6.h" 45 46static void copy_mem_info(struct info_str *info, char *data, int len); 47static int copy_info(struct info_str *info, char *fmt, ...); 48static void ahc_dump_target_state(struct ahc_softc *ahc, 49 struct info_str *info, 50 u_int our_id, char channel, 51 u_int target_id, u_int target_offset); 52static void ahc_dump_device_state(struct info_str *info, 53 struct scsi_device *dev); 54static int ahc_proc_write_seeprom(struct ahc_softc *ahc, 55 char *buffer, int length); 56 57/* 58 * Table of syncrates that don't follow the "divisible by 4" 59 * rule. This table will be expanded in future SCSI specs. 60 */ 61static const struct { 62 u_int period_factor; 63 u_int period; /* in 100ths of ns */ 64} scsi_syncrates[] = { 65 { 0x08, 625 }, /* FAST-160 */ 66 { 0x09, 1250 }, /* FAST-80 */ 67 { 0x0a, 2500 }, /* FAST-40 40MHz */ 68 { 0x0b, 3030 }, /* FAST-40 33MHz */ 69 { 0x0c, 5000 } /* FAST-20 */ 70}; 71 72/* 73 * Return the frequency in kHz corresponding to the given 74 * sync period factor. 75 */ 76static u_int 77ahc_calc_syncsrate(u_int period_factor) 78{ 79 int i; 80 81 /* See if the period is in the "exception" table */ 82 for (i = 0; i < ARRAY_SIZE(scsi_syncrates); i++) { 83 84 if (period_factor == scsi_syncrates[i].period_factor) { 85 /* Period in kHz */ 86 return (100000000 / scsi_syncrates[i].period); 87 } 88 } 89 90 /* 91 * Wasn't in the table, so use the standard 92 * 4 times conversion. 93 */ 94 return (10000000 / (period_factor * 4 * 10)); 95} 96 97 98static void 99copy_mem_info(struct info_str *info, char *data, int len) 100{ 101 if (info->pos + len > info->offset + info->length) 102 len = info->offset + info->length - info->pos; 103 104 if (info->pos + len < info->offset) { 105 info->pos += len; 106 return; 107 } 108 109 if (info->pos < info->offset) { 110 off_t partial; 111 112 partial = info->offset - info->pos; 113 data += partial; 114 info->pos += partial; 115 len -= partial; 116 } 117 118 if (len > 0) { 119 memcpy(info->buffer, data, len); 120 info->pos += len; 121 info->buffer += len; 122 } 123} 124 125static int 126copy_info(struct info_str *info, char *fmt, ...) 127{ 128 va_list args; 129 char buf[256]; 130 int len; 131 132 va_start(args, fmt); 133 len = vsprintf(buf, fmt, args); 134 va_end(args); 135 136 copy_mem_info(info, buf, len); 137 return (len); 138} 139 140static void 141ahc_format_transinfo(struct info_str *info, struct ahc_transinfo *tinfo) 142{ 143 u_int speed; 144 u_int freq; 145 u_int mb; 146 147 speed = 3300; 148 freq = 0; 149 if (tinfo->offset != 0) { 150 freq = ahc_calc_syncsrate(tinfo->period); 151 speed = freq; 152 } 153 speed *= (0x01 << tinfo->width); 154 mb = speed / 1000; 155 if (mb > 0) 156 copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000); 157 else 158 copy_info(info, "%dKB/s transfers", speed); 159 160 if (freq != 0) { 161 copy_info(info, " (%d.%03dMHz%s, offset %d", 162 freq / 1000, freq % 1000, 163 (tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0 164 ? " DT" : "", tinfo->offset); 165 } 166 167 if (tinfo->width > 0) { 168 if (freq != 0) { 169 copy_info(info, ", "); 170 } else { 171 copy_info(info, " ("); 172 } 173 copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width)); 174 } else if (freq != 0) { 175 copy_info(info, ")"); 176 } 177 copy_info(info, "\n"); 178} 179 180static void 181ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info, 182 u_int our_id, char channel, u_int target_id, 183 u_int target_offset) 184{ 185 struct scsi_target *starget; 186 struct ahc_initiator_tinfo *tinfo; 187 struct ahc_tmode_tstate *tstate; 188 int lun; 189 190 tinfo = ahc_fetch_transinfo(ahc, channel, our_id, 191 target_id, &tstate); 192 if ((ahc->features & AHC_TWIN) != 0) 193 copy_info(info, "Channel %c ", channel); 194 copy_info(info, "Target %d Negotiation Settings\n", target_id); 195 copy_info(info, "\tUser: "); 196 ahc_format_transinfo(info, &tinfo->user); 197 starget = ahc->platform_data->starget[target_offset]; 198 if (!starget) 199 return; 200 201 copy_info(info, "\tGoal: "); 202 ahc_format_transinfo(info, &tinfo->goal); 203 copy_info(info, "\tCurr: "); 204 ahc_format_transinfo(info, &tinfo->curr); 205 206 for (lun = 0; lun < AHC_NUM_LUNS; lun++) { 207 struct scsi_device *sdev; 208 209 sdev = scsi_device_lookup_by_target(starget, lun); 210 211 if (sdev == NULL) 212 continue; 213 214 ahc_dump_device_state(info, sdev); 215 } 216} 217 218static void 219ahc_dump_device_state(struct info_str *info, struct scsi_device *sdev) 220{ 221 struct ahc_linux_device *dev = scsi_transport_device_data(sdev); 222 223 copy_info(info, "\tChannel %c Target %d Lun %d Settings\n", 224 sdev->sdev_target->channel + 'A', 225 sdev->sdev_target->id, sdev->lun); 226 227 copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued); 228 copy_info(info, "\t\tCommands Active %d\n", dev->active); 229 copy_info(info, "\t\tCommand Openings %d\n", dev->openings); 230 copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags); 231 copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen); 232} 233 234static int 235ahc_proc_write_seeprom(struct ahc_softc *ahc, char *buffer, int length) 236{ 237 struct seeprom_descriptor sd; 238 int have_seeprom; 239 u_long s; 240 int paused; 241 int written; 242 243 /* Default to failure. */ 244 written = -EINVAL; 245 ahc_lock(ahc, &s); 246 paused = ahc_is_paused(ahc); 247 if (!paused) 248 ahc_pause(ahc); 249 250 if (length != sizeof(struct seeprom_config)) { 251 printk("ahc_proc_write_seeprom: incorrect buffer size\n"); 252 goto done; 253 } 254 255 have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer); 256 if (have_seeprom == 0) { 257 printk("ahc_proc_write_seeprom: cksum verification failed\n"); 258 goto done; 259 } 260 261 sd.sd_ahc = ahc; 262#if AHC_PCI_CONFIG > 0 263 if ((ahc->chip & AHC_PCI) != 0) { 264 sd.sd_control_offset = SEECTL; 265 sd.sd_status_offset = SEECTL; 266 sd.sd_dataout_offset = SEECTL; 267 if (ahc->flags & AHC_LARGE_SEEPROM) 268 sd.sd_chip = C56_66; 269 else 270 sd.sd_chip = C46; 271 sd.sd_MS = SEEMS; 272 sd.sd_RDY = SEERDY; 273 sd.sd_CS = SEECS; 274 sd.sd_CK = SEECK; 275 sd.sd_DO = SEEDO; 276 sd.sd_DI = SEEDI; 277 have_seeprom = ahc_acquire_seeprom(ahc, &sd); 278 } else 279#endif 280 if ((ahc->chip & AHC_VL) != 0) { 281 sd.sd_control_offset = SEECTL_2840; 282 sd.sd_status_offset = STATUS_2840; 283 sd.sd_dataout_offset = STATUS_2840; 284 sd.sd_chip = C46; 285 sd.sd_MS = 0; 286 sd.sd_RDY = EEPROM_TF; 287 sd.sd_CS = CS_2840; 288 sd.sd_CK = CK_2840; 289 sd.sd_DO = DO_2840; 290 sd.sd_DI = DI_2840; 291 have_seeprom = TRUE; 292 } else { 293 printk("ahc_proc_write_seeprom: unsupported adapter type\n"); 294 goto done; 295 } 296 297 if (!have_seeprom) { 298 printk("ahc_proc_write_seeprom: No Serial EEPROM\n"); 299 goto done; 300 } else { 301 u_int start_addr; 302 303 if (ahc->seep_config == NULL) { 304 ahc->seep_config = kmalloc(sizeof(*ahc->seep_config), GFP_ATOMIC); 305 if (ahc->seep_config == NULL) { 306 printk("aic7xxx: Unable to allocate serial " 307 "eeprom buffer. Write failing\n"); 308 goto done; 309 } 310 } 311 printk("aic7xxx: Writing Serial EEPROM\n"); 312 start_addr = 32 * (ahc->channel - 'A'); 313 ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr, 314 sizeof(struct seeprom_config)/2); 315 ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config, 316 start_addr, sizeof(struct seeprom_config)/2); 317#if AHC_PCI_CONFIG > 0 318 if ((ahc->chip & AHC_VL) == 0) 319 ahc_release_seeprom(&sd); 320#endif 321 written = length; 322 } 323 324done: 325 if (!paused) 326 ahc_unpause(ahc); 327 ahc_unlock(ahc, &s); 328 return (written); 329} 330 331/* 332 * Return information to handle /proc support for the driver. 333 */ 334int 335ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start, 336 off_t offset, int length, int inout) 337{ 338 struct ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata; 339 struct info_str info; 340 char ahc_info[256]; 341 u_int max_targ; 342 u_int i; 343 int retval; 344 345 /* Has data been written to the file? */ 346 if (inout == TRUE) { 347 retval = ahc_proc_write_seeprom(ahc, buffer, length); 348 goto done; 349 } 350 351 if (start) 352 *start = buffer; 353 354 info.buffer = buffer; 355 info.length = length; 356 info.offset = offset; 357 info.pos = 0; 358 359 copy_info(&info, "Adaptec AIC7xxx driver version: %s\n", 360 AIC7XXX_DRIVER_VERSION); 361 copy_info(&info, "%s\n", ahc->description); 362 ahc_controller_info(ahc, ahc_info); 363 copy_info(&info, "%s\n", ahc_info); 364 copy_info(&info, "Allocated SCBs: %d, SG List Length: %d\n\n", 365 ahc->scb_data->numscbs, AHC_NSEG); 366 367 368 if (ahc->seep_config == NULL) 369 copy_info(&info, "No Serial EEPROM\n"); 370 else { 371 copy_info(&info, "Serial EEPROM:\n"); 372 for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) { 373 if (((i % 8) == 0) && (i != 0)) { 374 copy_info(&info, "\n"); 375 } 376 copy_info(&info, "0x%.4x ", 377 ((uint16_t*)ahc->seep_config)[i]); 378 } 379 copy_info(&info, "\n"); 380 } 381 copy_info(&info, "\n"); 382 383 max_targ = 16; 384 if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0) 385 max_targ = 8; 386 387 for (i = 0; i < max_targ; i++) { 388 u_int our_id; 389 u_int target_id; 390 char channel; 391 392 channel = 'A'; 393 our_id = ahc->our_id; 394 target_id = i; 395 if (i > 7 && (ahc->features & AHC_TWIN) != 0) { 396 channel = 'B'; 397 our_id = ahc->our_id_b; 398 target_id = i % 8; 399 } 400 401 ahc_dump_target_state(ahc, &info, our_id, 402 channel, target_id, i); 403 } 404 retval = info.pos > info.offset ? info.pos - info.offset : 0; 405done: 406 return (retval); 407} 408