git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/aic7xxx/aic7xxx_proc.c

   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
  46 static void     copy_mem_info(struct info_str *info, char *data, int len);
  47 static int      copy_info(struct info_str *info, char *fmt, ...);
  48 static 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);
  52 static void     ahc_dump_device_state(struct info_str *info,
  53                                       struct scsi_device *dev);
  54 static 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  */
  61 static 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  */
  76 static u_int
  77 ahc_calc_syncsrate(u_int period_factor)
  78 {
  79         int i;
  80         int num_syncrates;
  81
  82         num_syncrates = sizeof(scsi_syncrates) / sizeof(scsi_syncrates[0]);
  83         /* See if the period is in the "exception" table */
  84         for (i = 0; i < num_syncrates; i++) {
  85
  86                 if (period_factor == scsi_syncrates[i].period_factor) {
  87                         /* Period in kHz */
  88                         return (100000000 / scsi_syncrates[i].period);
  89                 }
  90         }
  91
  92         /*
  93          * Wasn't in the table, so use the standard
  94          * 4 times conversion.
  95          */
  96         return (10000000 / (period_factor * 4 * 10));
  97 }
  98
  99
 100 static void
 101 copy_mem_info(struct info_str *info, char *data, int len)
 102 {
 103         if (info->pos + len > info->offset + info->length)
 104                 len = info->offset + info->length - info->pos;
 105
 106         if (info->pos + len < info->offset) {
 107                 info->pos += len;
 108                 return;
 109         }
 110
 111         if (info->pos < info->offset) {
 112                 off_t partial;
 113
 114                 partial = info->offset - info->pos;
 115                 data += partial;
 116                 info->pos += partial;
 117                 len  -= partial;
 118         }
 119
 120         if (len > 0) {
 121                 memcpy(info->buffer, data, len);
 122                 info->pos += len;
 123                 info->buffer += len;
 124         }
 125 }
 126
 127 static int
 128 copy_info(struct info_str *info, char *fmt, ...)
 129 {
 130         va_list args;
 131         char buf[256];
 132         int len;
 133
 134         va_start(args, fmt);
 135         len = vsprintf(buf, fmt, args);
 136         va_end(args);
 137
 138         copy_mem_info(info, buf, len);
 139         return (len);
 140 }
 141
 142 void
 143 ahc_format_transinfo(struct info_str *info, struct ahc_transinfo *tinfo)
 144 {
 145         u_int speed;
 146         u_int freq;
 147         u_int mb;
 148
 149         speed = 3300;
 150         freq = 0;
 151         if (tinfo->offset != 0) {
 152                 freq = ahc_calc_syncsrate(tinfo->period);
 153                 speed = freq;
 154         }
 155         speed *= (0x01 << tinfo->width);
 156         mb = speed / 1000;
 157         if (mb > 0)
 158                 copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000);
 159         else
 160                 copy_info(info, "%dKB/s transfers", speed);
 161
 162         if (freq != 0) {
 163                 copy_info(info, " (%d.%03dMHz%s, offset %d",
 164                          freq / 1000, freq % 1000,
 165                          (tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
 166                          ? " DT" : "", tinfo->offset);
 167         }
 168
 169         if (tinfo->width > 0) {
 170                 if (freq != 0) {
 171                         copy_info(info, ", ");
 172                 } else {
 173                         copy_info(info, " (");
 174                 }
 175                 copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width));
 176         } else if (freq != 0) {
 177                 copy_info(info, ")");
 178         }
 179         copy_info(info, "\n");
 180 }
 181
 182 static void
 183 ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
 184                       u_int our_id, char channel, u_int target_id,
 185                       u_int target_offset)
 186 {
 187         struct  ahc_linux_target *targ;
 188         struct  scsi_target *starget;
 189         struct  ahc_initiator_tinfo *tinfo;
 190         struct  ahc_tmode_tstate *tstate;
 191         int     lun;
 192
 193         tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
 194                                     target_id, &tstate);
 195         if ((ahc->features & AHC_TWIN) != 0)
 196                 copy_info(info, "Channel %c ", channel);
 197         copy_info(info, "Target %d Negotiation Settings\n", target_id);
 198         copy_info(info, "\tUser: ");
 199         ahc_format_transinfo(info, &tinfo->user);
 200         starget = ahc->platform_data->starget[target_offset];
 201         if (!starget)
 202                 return;
 203         targ = scsi_transport_target_data(starget);
 204
 205         copy_info(info, "\tGoal: ");
 206         ahc_format_transinfo(info, &tinfo->goal);
 207         copy_info(info, "\tCurr: ");
 208         ahc_format_transinfo(info, &tinfo->curr);
 209
 210         for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
 211                 struct scsi_device *sdev;
 212
 213                 sdev = targ->sdev[lun];
 214
 215                 if (sdev == NULL)
 216                         continue;
 217
 218                 ahc_dump_device_state(info, sdev);
 219         }
 220 }
 221
 222 static void
 223 ahc_dump_device_state(struct info_str *info, struct scsi_device *sdev)
 224 {
 225         struct ahc_linux_device *dev = scsi_transport_device_data(sdev);
 226
 227         copy_info(info, "\tChannel %c Target %d Lun %d Settings\n",
 228                   sdev->sdev_target->channel + 'A',
 229                   sdev->sdev_target->id, sdev->lun);
 230
 231         copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued);
 232         copy_info(info, "\t\tCommands Active %d\n", dev->active);
 233         copy_info(info, "\t\tCommand Openings %d\n", dev->openings);
 234         copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags);
 235         copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
 236 }
 237
 238 static int
 239 ahc_proc_write_seeprom(struct ahc_softc *ahc, char *buffer, int length)
 240 {
 241         struct seeprom_descriptor sd;
 242         int have_seeprom;
 243         u_long s;
 244         int paused;
 245         int written;
 246
 247         /* Default to failure. */
 248         written = -EINVAL;
 249         ahc_lock(ahc, &s);
 250         paused = ahc_is_paused(ahc);
 251         if (!paused)
 252                 ahc_pause(ahc);
 253
 254         if (length != sizeof(struct seeprom_config)) {
 255                 printf("ahc_proc_write_seeprom: incorrect buffer size\n");
 256                 goto done;
 257         }
 258
 259         have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer);
 260         if (have_seeprom == 0) {
 261                 printf("ahc_proc_write_seeprom: cksum verification failed\n");
 262                 goto done;
 263         }
 264
 265         sd.sd_ahc = ahc;
 266 #if AHC_PCI_CONFIG > 0
 267         if ((ahc->chip & AHC_PCI) != 0) {
 268                 sd.sd_control_offset = SEECTL;
 269                 sd.sd_status_offset = SEECTL;
 270                 sd.sd_dataout_offset = SEECTL;
 271                 if (ahc->flags & AHC_LARGE_SEEPROM)
 272                         sd.sd_chip = C56_66;
 273                 else
 274                         sd.sd_chip = C46;
 275                 sd.sd_MS = SEEMS;
 276                 sd.sd_RDY = SEERDY;
 277                 sd.sd_CS = SEECS;
 278                 sd.sd_CK = SEECK;
 279                 sd.sd_DO = SEEDO;
 280                 sd.sd_DI = SEEDI;
 281                 have_seeprom = ahc_acquire_seeprom(ahc, &sd);
 282         } else
 283 #endif
 284         if ((ahc->chip & AHC_VL) != 0) {
 285                 sd.sd_control_offset = SEECTL_2840;
 286                 sd.sd_status_offset = STATUS_2840;
 287                 sd.sd_dataout_offset = STATUS_2840;
 288                 sd.sd_chip = C46;
 289                 sd.sd_MS = 0;
 290                 sd.sd_RDY = EEPROM_TF;
 291                 sd.sd_CS = CS_2840;
 292                 sd.sd_CK = CK_2840;
 293                 sd.sd_DO = DO_2840;
 294                 sd.sd_DI = DI_2840;
 295                 have_seeprom = TRUE;
 296         } else {
 297                 printf("ahc_proc_write_seeprom: unsupported adapter type\n");
 298                 goto done;
 299         }
 300
 301         if (!have_seeprom) {
 302                 printf("ahc_proc_write_seeprom: No Serial EEPROM\n");
 303                 goto done;
 304         } else {
 305                 u_int start_addr;
 306
 307                 if (ahc->seep_config == NULL) {
 308                         ahc->seep_config = malloc(sizeof(*ahc->seep_config),
 309                                                   M_DEVBUF, M_NOWAIT);
 310                         if (ahc->seep_config == NULL) {
 311                                 printf("aic7xxx: Unable to allocate serial "
 312                                        "eeprom buffer.  Write failing\n");
 313                                 goto done;
 314                         }
 315                 }
 316                 printf("aic7xxx: Writing Serial EEPROM\n");
 317                 start_addr = 32 * (ahc->channel - 'A');
 318                 ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr,
 319                                   sizeof(struct seeprom_config)/2);
 320                 ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config,
 321                                  start_addr, sizeof(struct seeprom_config)/2);
 322 #if AHC_PCI_CONFIG > 0
 323                 if ((ahc->chip & AHC_VL) == 0)
 324                         ahc_release_seeprom(&sd);
 325 #endif
 326                 written = length;
 327         }
 328
 329 done:
 330         if (!paused)
 331                 ahc_unpause(ahc);
 332         ahc_unlock(ahc, &s);
 333         return (written);
 334 }
 335
 336 /*
 337  * Return information to handle /proc support for the driver.
 338  */
 339 int
 340 ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
 341                     off_t offset, int length, int inout)
 342 {
 343         struct  ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
 344         struct  info_str info;
 345         char    ahc_info[256];
 346         u_int   max_targ;
 347         u_int   i;
 348         int     retval;
 349
 350          /* Has data been written to the file? */
 351         if (inout == TRUE) {
 352                 retval = ahc_proc_write_seeprom(ahc, buffer, length);
 353                 goto done;
 354         }
 355
 356         if (start)
 357                 *start = buffer;
 358
 359         info.buffer     = buffer;
 360         info.length     = length;
 361         info.offset     = offset;
 362         info.pos        = 0;
 363
 364         copy_info(&info, "Adaptec AIC7xxx driver version: %s\n",
 365                   AIC7XXX_DRIVER_VERSION);
 366         copy_info(&info, "%s\n", ahc->description);
 367         ahc_controller_info(ahc, ahc_info);
 368         copy_info(&info, "%s\n", ahc_info);
 369         copy_info(&info, "Allocated SCBs: %d, SG List Length: %d\n\n",
 370                   ahc->scb_data->numscbs, AHC_NSEG);
 371
 372
 373         if (ahc->seep_config == NULL)
 374                 copy_info(&info, "No Serial EEPROM\n");
 375         else {
 376                 copy_info(&info, "Serial EEPROM:\n");
 377                 for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) {
 378                         if (((i % 8) == 0) && (i != 0)) {
 379                                 copy_info(&info, "\n");
 380                         }
 381                         copy_info(&info, "0x%.4x ",
 382                                   ((uint16_t*)ahc->seep_config)[i]);
 383                 }
 384                 copy_info(&info, "\n");
 385         }
 386         copy_info(&info, "\n");
 387
 388         max_targ = 15;
 389         if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
 390                 max_targ = 7;
 391
 392         for (i = 0; i <= max_targ; i++) {
 393                 u_int our_id;
 394                 u_int target_id;
 395                 char channel;
 396
 397                 channel = 'A';
 398                 our_id = ahc->our_id;
 399                 target_id = i;
 400                 if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
 401                         channel = 'B';
 402                         our_id = ahc->our_id_b;
 403                         target_id = i % 8;
 404                 }
 405
 406                 ahc_dump_target_state(ahc, &info, our_id,
 407                                       channel, target_id, i);
 408         }
 409         retval = info.pos > info.offset ? info.pos - info.offset : 0;
 410 done:
 411         return (retval);
 412 }