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 ahc_linux_device *dev);
  54 static int      ahc_proc_write_seeprom(struct ahc_softc *ahc,
  55                                        char *buffer, int length);
  56
  57 static void
  58 copy_mem_info(struct info_str *info, char *data, int len)
  59 {
  60         if (info->pos + len > info->offset + info->length)
  61                 len = info->offset + info->length - info->pos;
  62
  63         if (info->pos + len < info->offset) {
  64                 info->pos += len;
  65                 return;
  66         }
  67
  68         if (info->pos < info->offset) {
  69                 off_t partial;
  70
  71                 partial = info->offset - info->pos;
  72                 data += partial;
  73                 info->pos += partial;
  74                 len  -= partial;
  75         }
  76
  77         if (len > 0) {
  78                 memcpy(info->buffer, data, len);
  79                 info->pos += len;
  80                 info->buffer += len;
  81         }
  82 }
  83
  84 static int
  85 copy_info(struct info_str *info, char *fmt, ...)
  86 {
  87         va_list args;
  88         char buf[256];
  89         int len;
  90
  91         va_start(args, fmt);
  92         len = vsprintf(buf, fmt, args);
  93         va_end(args);
  94
  95         copy_mem_info(info, buf, len);
  96         return (len);
  97 }
  98
  99 void
 100 ahc_format_transinfo(struct info_str *info, struct ahc_transinfo *tinfo)
 101 {
 102         u_int speed;
 103         u_int freq;
 104         u_int mb;
 105
 106         speed = 3300;
 107         freq = 0;
 108         if (tinfo->offset != 0) {
 109                 freq = aic_calc_syncsrate(tinfo->period);
 110                 speed = freq;
 111         }
 112         speed *= (0x01 << tinfo->width);
 113         mb = speed / 1000;
 114         if (mb > 0)
 115                 copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000);
 116         else
 117                 copy_info(info, "%dKB/s transfers", speed);
 118
 119         if (freq != 0) {
 120                 copy_info(info, " (%d.%03dMHz%s, offset %d",
 121                          freq / 1000, freq % 1000,
 122                          (tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0
 123                          ? " DT" : "", tinfo->offset);
 124         }
 125
 126         if (tinfo->width > 0) {
 127                 if (freq != 0) {
 128                         copy_info(info, ", ");
 129                 } else {
 130                         copy_info(info, " (");
 131                 }
 132                 copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width));
 133         } else if (freq != 0) {
 134                 copy_info(info, ")");
 135         }
 136         copy_info(info, "\n");
 137 }
 138
 139 static void
 140 ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
 141                       u_int our_id, char channel, u_int target_id,
 142                       u_int target_offset)
 143 {
 144         struct  ahc_linux_target *targ;
 145         struct  ahc_initiator_tinfo *tinfo;
 146         struct  ahc_tmode_tstate *tstate;
 147         int     lun;
 148
 149         tinfo = ahc_fetch_transinfo(ahc, channel, our_id,
 150                                     target_id, &tstate);
 151         if ((ahc->features & AHC_TWIN) != 0)
 152                 copy_info(info, "Channel %c ", channel);
 153         copy_info(info, "Target %d Negotiation Settings\n", target_id);
 154         copy_info(info, "\tUser: ");
 155         ahc_format_transinfo(info, &tinfo->user);
 156         targ = ahc->platform_data->targets[target_offset];
 157         if (targ == NULL)
 158                 return;
 159
 160         copy_info(info, "\tGoal: ");
 161         ahc_format_transinfo(info, &tinfo->goal);
 162         copy_info(info, "\tCurr: ");
 163         ahc_format_transinfo(info, &tinfo->curr);
 164
 165         for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
 166                 struct ahc_linux_device *dev;
 167
 168                 dev = targ->devices[lun];
 169
 170                 if (dev == NULL)
 171                         continue;
 172
 173                 ahc_dump_device_state(info, dev);
 174         }
 175 }
 176
 177 static void
 178 ahc_dump_device_state(struct info_str *info, struct ahc_linux_device *dev)
 179 {
 180         copy_info(info, "\tChannel %c Target %d Lun %d Settings\n",
 181                   dev->target->channel + 'A', dev->target->target, dev->lun);
 182
 183         copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued);
 184         copy_info(info, "\t\tCommands Active %d\n", dev->active);
 185         copy_info(info, "\t\tCommand Openings %d\n", dev->openings);
 186         copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags);
 187         copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
 188 }
 189
 190 static int
 191 ahc_proc_write_seeprom(struct ahc_softc *ahc, char *buffer, int length)
 192 {
 193         struct seeprom_descriptor sd;
 194         int have_seeprom;
 195         u_long s;
 196         int paused;
 197         int written;
 198
 199         /* Default to failure. */
 200         written = -EINVAL;
 201         ahc_lock(ahc, &s);
 202         paused = ahc_is_paused(ahc);
 203         if (!paused)
 204                 ahc_pause(ahc);
 205
 206         if (length != sizeof(struct seeprom_config)) {
 207                 printf("ahc_proc_write_seeprom: incorrect buffer size\n");
 208                 goto done;
 209         }
 210
 211         have_seeprom = ahc_verify_cksum((struct seeprom_config*)buffer);
 212         if (have_seeprom == 0) {
 213                 printf("ahc_proc_write_seeprom: cksum verification failed\n");
 214                 goto done;
 215         }
 216
 217         sd.sd_ahc = ahc;
 218 #if AHC_PCI_CONFIG > 0
 219         if ((ahc->chip & AHC_PCI) != 0) {
 220                 sd.sd_control_offset = SEECTL;
 221                 sd.sd_status_offset = SEECTL;
 222                 sd.sd_dataout_offset = SEECTL;
 223                 if (ahc->flags & AHC_LARGE_SEEPROM)
 224                         sd.sd_chip = C56_66;
 225                 else
 226                         sd.sd_chip = C46;
 227                 sd.sd_MS = SEEMS;
 228                 sd.sd_RDY = SEERDY;
 229                 sd.sd_CS = SEECS;
 230                 sd.sd_CK = SEECK;
 231                 sd.sd_DO = SEEDO;
 232                 sd.sd_DI = SEEDI;
 233                 have_seeprom = ahc_acquire_seeprom(ahc, &sd);
 234         } else
 235 #endif
 236         if ((ahc->chip & AHC_VL) != 0) {
 237                 sd.sd_control_offset = SEECTL_2840;
 238                 sd.sd_status_offset = STATUS_2840;
 239                 sd.sd_dataout_offset = STATUS_2840;
 240                 sd.sd_chip = C46;
 241                 sd.sd_MS = 0;
 242                 sd.sd_RDY = EEPROM_TF;
 243                 sd.sd_CS = CS_2840;
 244                 sd.sd_CK = CK_2840;
 245                 sd.sd_DO = DO_2840;
 246                 sd.sd_DI = DI_2840;
 247                 have_seeprom = TRUE;
 248         } else {
 249                 printf("ahc_proc_write_seeprom: unsupported adapter type\n");
 250                 goto done;
 251         }
 252
 253         if (!have_seeprom) {
 254                 printf("ahc_proc_write_seeprom: No Serial EEPROM\n");
 255                 goto done;
 256         } else {
 257                 u_int start_addr;
 258
 259                 if (ahc->seep_config == NULL) {
 260                         ahc->seep_config = malloc(sizeof(*ahc->seep_config),
 261                                                   M_DEVBUF, M_NOWAIT);
 262                         if (ahc->seep_config == NULL) {
 263                                 printf("aic7xxx: Unable to allocate serial "
 264                                        "eeprom buffer.  Write failing\n");
 265                                 goto done;
 266                         }
 267                 }
 268                 printf("aic7xxx: Writing Serial EEPROM\n");
 269                 start_addr = 32 * (ahc->channel - 'A');
 270                 ahc_write_seeprom(&sd, (u_int16_t *)buffer, start_addr,
 271                                   sizeof(struct seeprom_config)/2);
 272                 ahc_read_seeprom(&sd, (uint16_t *)ahc->seep_config,
 273                                  start_addr, sizeof(struct seeprom_config)/2);
 274 #if AHC_PCI_CONFIG > 0
 275                 if ((ahc->chip & AHC_VL) == 0)
 276                         ahc_release_seeprom(&sd);
 277 #endif
 278                 written = length;
 279         }
 280
 281 done:
 282         if (!paused)
 283                 ahc_unpause(ahc);
 284         ahc_unlock(ahc, &s);
 285         return (written);
 286 }
 287
 288 /*
 289  * Return information to handle /proc support for the driver.
 290  */
 291 int
 292 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 293 ahc_linux_proc_info(char *buffer, char **start, off_t offset,
 294                     int length, int hostno, int inout)
 295 #else
 296 ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
 297                     off_t offset, int length, int inout)
 298 #endif
 299 {
 300         struct  ahc_softc *ahc;
 301         struct  info_str info;
 302         char    ahc_info[256];
 303         u_long  s;
 304         u_int   max_targ;
 305         u_int   i;
 306         int     retval;
 307
 308         retval = -EINVAL;
 309         ahc_list_lock(&s);
 310 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 311         TAILQ_FOREACH(ahc, &ahc_tailq, links) {
 312                 if (ahc->platform_data->host->host_no == hostno)
 313                         break;
 314         }
 315 #else
 316         ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
 317 #endif
 318
 319         if (ahc == NULL)
 320                 goto done;
 321
 322          /* Has data been written to the file? */
 323         if (inout == TRUE) {
 324                 retval = ahc_proc_write_seeprom(ahc, buffer, length);
 325                 goto done;
 326         }
 327
 328         if (start)
 329                 *start = buffer;
 330
 331         info.buffer     = buffer;
 332         info.length     = length;
 333         info.offset     = offset;
 334         info.pos        = 0;
 335
 336         copy_info(&info, "Adaptec AIC7xxx driver version: %s\n",
 337                   AIC7XXX_DRIVER_VERSION);
 338         copy_info(&info, "%s\n", ahc->description);
 339         ahc_controller_info(ahc, ahc_info);
 340         copy_info(&info, "%s\n", ahc_info);
 341         copy_info(&info, "Allocated SCBs: %d, SG List Length: %d\n\n",
 342                   ahc->scb_data->numscbs, AHC_NSEG);
 343
 344
 345         if (ahc->seep_config == NULL)
 346                 copy_info(&info, "No Serial EEPROM\n");
 347         else {
 348                 copy_info(&info, "Serial EEPROM:\n");
 349                 for (i = 0; i < sizeof(*ahc->seep_config)/2; i++) {
 350                         if (((i % 8) == 0) && (i != 0)) {
 351                                 copy_info(&info, "\n");
 352                         }
 353                         copy_info(&info, "0x%.4x ",
 354                                   ((uint16_t*)ahc->seep_config)[i]);
 355                 }
 356                 copy_info(&info, "\n");
 357         }
 358         copy_info(&info, "\n");
 359
 360         max_targ = 15;
 361         if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
 362                 max_targ = 7;
 363
 364         for (i = 0; i <= max_targ; i++) {
 365                 u_int our_id;
 366                 u_int target_id;
 367                 char channel;
 368
 369                 channel = 'A';
 370                 our_id = ahc->our_id;
 371                 target_id = i;
 372                 if (i > 7 && (ahc->features & AHC_TWIN) != 0) {
 373                         channel = 'B';
 374                         our_id = ahc->our_id_b;
 375                         target_id = i % 8;
 376                 }
 377
 378                 ahc_dump_target_state(ahc, &info, our_id,
 379                                       channel, target_id, i);
 380         }
 381         retval = info.pos > info.offset ? info.pos - info.offset : 0;
 382 done:
 383         ahc_list_unlock(&s);
 384         return (retval);
 385 }