drivers/scsi/aic7xxx/aic79xx_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/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 ahd_linux_device *dev);
  53 static int      ahd_proc_write_seeprom(struct ahd_softc *ahd,
  54                                        char *buffer, int length);
  55
  56 static void
  57 copy_mem_info(struct info_str *info, char *data, int len)
  58 {
  59         if (info->pos + len > info->offset + info->length)
  60                 len = info->offset + info->length - info->pos;
  61
  62         if (info->pos + len < info->offset) {
  63                 info->pos += len;
  64                 return;
  65         }
  66
  67         if (info->pos < info->offset) {
  68                 off_t partial;
  69
  70                 partial = info->offset - info->pos;
  71                 data += partial;
  72                 info->pos += partial;
  73                 len  -= partial;
  74         }
  75
  76         if (len > 0) {
  77                 memcpy(info->buffer, data, len);
  78                 info->pos += len;
  79                 info->buffer += len;
  80         }
  81 }
  82
  83 static int
  84 copy_info(struct info_str *info, char *fmt, ...)
  85 {
  86         va_list args;
  87         char buf[256];
  88         int len;
  89
  90         va_start(args, fmt);
  91         len = vsprintf(buf, fmt, args);
  92         va_end(args);
  93
  94         copy_mem_info(info, buf, len);
  95         return (len);
  96 }
  97
  98 void
  99 ahd_format_transinfo(struct info_str *info, struct ahd_transinfo *tinfo)
 100 {
 101         u_int speed;
 102         u_int freq;
 103         u_int mb;
 104
 105         if (tinfo->period == AHD_PERIOD_UNKNOWN) {
 106                 copy_info(info, "Renegotiation Pending\n");
 107                 return;
 108         }
 109         speed = 3300;
 110         freq = 0;
 111         if (tinfo->offset != 0) {
 112                 freq = aic_calc_syncsrate(tinfo->period);
 113                 speed = freq;
 114         }
 115         speed *= (0x01 << tinfo->width);
 116         mb = speed / 1000;
 117         if (mb > 0)
 118                 copy_info(info, "%d.%03dMB/s transfers", mb, speed % 1000);
 119         else
 120                 copy_info(info, "%dKB/s transfers", speed);
 121
 122         if (freq != 0) {
 123                 int     printed_options;
 124
 125                 printed_options = 0;
 126                 copy_info(info, " (%d.%03dMHz", freq / 1000, freq % 1000);
 127                 if ((tinfo->ppr_options & MSG_EXT_PPR_RD_STRM) != 0) {
 128                         copy_info(info, " RDSTRM");
 129                         printed_options++;
 130                 }
 131                 if ((tinfo->ppr_options & MSG_EXT_PPR_DT_REQ) != 0) {
 132                         copy_info(info, "%s", printed_options ? "|DT" : " DT");
 133                         printed_options++;
 134                 }
 135                 if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
 136                         copy_info(info, "%s", printed_options ? "|IU" : " IU");
 137                         printed_options++;
 138                 }
 139                 if ((tinfo->ppr_options & MSG_EXT_PPR_RTI) != 0) {
 140                         copy_info(info, "%s",
 141                                   printed_options ? "|RTI" : " RTI");
 142                         printed_options++;
 143                 }
 144                 if ((tinfo->ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) {
 145                         copy_info(info, "%s",
 146                                   printed_options ? "|QAS" : " QAS");
 147                         printed_options++;
 148                 }
 149         }
 150
 151         if (tinfo->width > 0) {
 152                 if (freq != 0) {
 153                         copy_info(info, ", ");
 154                 } else {
 155                         copy_info(info, " (");
 156                 }
 157                 copy_info(info, "%dbit)", 8 * (0x01 << tinfo->width));
 158         } else if (freq != 0) {
 159                 copy_info(info, ")");
 160         }
 161         copy_info(info, "\n");
 162 }
 163
 164 static void
 165 ahd_dump_target_state(struct ahd_softc *ahd, struct info_str *info,
 166                       u_int our_id, char channel, u_int target_id,
 167                       u_int target_offset)
 168 {
 169         struct  ahd_linux_target *targ;
 170         struct  ahd_initiator_tinfo *tinfo;
 171         struct  ahd_tmode_tstate *tstate;
 172         int     lun;
 173
 174         tinfo = ahd_fetch_transinfo(ahd, channel, our_id,
 175                                     target_id, &tstate);
 176         copy_info(info, "Target %d Negotiation Settings\n", target_id);
 177         copy_info(info, "\tUser: ");
 178         ahd_format_transinfo(info, &tinfo->user);
 179         targ = ahd->platform_data->targets[target_offset];
 180         if (targ == NULL)
 181                 return;
 182
 183         copy_info(info, "\tGoal: ");
 184         ahd_format_transinfo(info, &tinfo->goal);
 185         copy_info(info, "\tCurr: ");
 186         ahd_format_transinfo(info, &tinfo->curr);
 187         copy_info(info, "\tTransmission Errors %ld\n", targ->errors_detected);
 188
 189         for (lun = 0; lun < AHD_NUM_LUNS; lun++) {
 190                 struct ahd_linux_device *dev;
 191
 192                 dev = targ->devices[lun];
 193
 194                 if (dev == NULL)
 195                         continue;
 196
 197                 ahd_dump_device_state(info, dev);
 198         }
 199 }
 200
 201 static void
 202 ahd_dump_device_state(struct info_str *info, struct ahd_linux_device *dev)
 203 {
 204         copy_info(info, "\tChannel %c Target %d Lun %d Settings\n",
 205                   dev->target->channel + 'A', dev->target->target, dev->lun);
 206
 207         copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued);
 208         copy_info(info, "\t\tCommands Active %d\n", dev->active);
 209         copy_info(info, "\t\tCommand Openings %d\n", dev->openings);
 210         copy_info(info, "\t\tMax Tagged Openings %d\n", dev->maxtags);
 211         copy_info(info, "\t\tDevice Queue Frozen Count %d\n", dev->qfrozen);
 212 }
 213
 214 static int
 215 ahd_proc_write_seeprom(struct ahd_softc *ahd, char *buffer, int length)
 216 {
 217         ahd_mode_state saved_modes;
 218         int have_seeprom;
 219         u_long s;
 220         int paused;
 221         int written;
 222
 223         /* Default to failure. */
 224         written = -EINVAL;
 225         ahd_lock(ahd, &s);
 226         paused = ahd_is_paused(ahd);
 227         if (!paused)
 228                 ahd_pause(ahd);
 229
 230         saved_modes = ahd_save_modes(ahd);
 231         ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
 232         if (length != sizeof(struct seeprom_config)) {
 233                 printf("ahd_proc_write_seeprom: incorrect buffer size\n");
 234                 goto done;
 235         }
 236
 237         have_seeprom = ahd_verify_cksum((struct seeprom_config*)buffer);
 238         if (have_seeprom == 0) {
 239                 printf("ahd_proc_write_seeprom: cksum verification failed\n");
 240                 goto done;
 241         }
 242
 243         have_seeprom = ahd_acquire_seeprom(ahd);
 244         if (!have_seeprom) {
 245                 printf("ahd_proc_write_seeprom: No Serial EEPROM\n");
 246                 goto done;
 247         } else {
 248                 u_int start_addr;
 249
 250                 if (ahd->seep_config == NULL) {
 251                         ahd->seep_config = malloc(sizeof(*ahd->seep_config),
 252                                                   M_DEVBUF, M_NOWAIT);
 253                         if (ahd->seep_config == NULL) {
 254                                 printf("aic79xx: Unable to allocate serial "
 255                                        "eeprom buffer.  Write failing\n");
 256                                 goto done;
 257                         }
 258                 }
 259                 printf("aic79xx: Writing Serial EEPROM\n");
 260                 start_addr = 32 * (ahd->channel - 'A');
 261                 ahd_write_seeprom(ahd, (u_int16_t *)buffer, start_addr,
 262                                   sizeof(struct seeprom_config)/2);
 263                 ahd_read_seeprom(ahd, (uint16_t *)ahd->seep_config,
 264                                  start_addr, sizeof(struct seeprom_config)/2,
 265                                  /*ByteStream*/FALSE);
 266                 ahd_release_seeprom(ahd);
 267                 written = length;
 268         }
 269
 270 done:
 271         ahd_restore_modes(ahd, saved_modes);
 272         if (!paused)
 273                 ahd_unpause(ahd);
 274         ahd_unlock(ahd, &s);
 275         return (written);
 276 }
 277 /*
 278  * Return information to handle /proc support for the driver.
 279  */
 280 int
 281 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 282 ahd_linux_proc_info(char *buffer, char **start, off_t offset,
 283                     int length, int hostno, int inout)
 284 #else
 285 ahd_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
 286                     off_t offset, int length, int inout)
 287 #endif
 288 {
 289         struct  ahd_softc *ahd;
 290         struct  info_str info;
 291         char    ahd_info[256];
 292         u_long  l;
 293         u_int   max_targ;
 294         u_int   i;
 295         int     retval;
 296
 297         retval = -EINVAL;
 298         ahd_list_lock(&l);
 299 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
 300         TAILQ_FOREACH(ahd, &ahd_tailq, links) {
 301                 if (ahd->platform_data->host->host_no == hostno)
 302                         break;
 303         }
 304 #else
 305         ahd = ahd_find_softc(*(struct ahd_softc **)shost->hostdata);
 306 #endif
 307
 308         if (ahd == NULL)
 309                 goto done;
 310
 311          /* Has data been written to the file? */
 312         if (inout == TRUE) {
 313                 retval = ahd_proc_write_seeprom(ahd, buffer, length);
 314                 goto done;
 315         }
 316
 317         if (start)
 318                 *start = buffer;
 319
 320         info.buffer     = buffer;
 321         info.length     = length;
 322         info.offset     = offset;
 323         info.pos        = 0;
 324
 325         copy_info(&info, "Adaptec AIC79xx driver version: %s\n",
 326                   AIC79XX_DRIVER_VERSION);
 327         copy_info(&info, "%s\n", ahd->description);
 328         ahd_controller_info(ahd, ahd_info);
 329         copy_info(&info, "%s\n", ahd_info);
 330         copy_info(&info, "Allocated SCBs: %d, SG List Length: %d\n\n",
 331                   ahd->scb_data.numscbs, AHD_NSEG);
 332
 333         max_targ = 15;
 334
 335         if (ahd->seep_config == NULL)
 336                 copy_info(&info, "No Serial EEPROM\n");
 337         else {
 338                 copy_info(&info, "Serial EEPROM:\n");
 339                 for (i = 0; i < sizeof(*ahd->seep_config)/2; i++) {
 340                         if (((i % 8) == 0) && (i != 0)) {
 341                                 copy_info(&info, "\n");
 342                         }
 343                         copy_info(&info, "0x%.4x ",
 344                                   ((uint16_t*)ahd->seep_config)[i]);
 345                 }
 346                 copy_info(&info, "\n");
 347         }
 348         copy_info(&info, "\n");
 349
 350         if ((ahd->features & AHD_WIDE) == 0)
 351                 max_targ = 7;
 352
 353         for (i = 0; i <= max_targ; i++) {
 354
 355                 ahd_dump_target_state(ahd, &info, ahd->our_id, 'A',
 356                                       /*target_id*/i, /*target_offset*/i);
 357         }
 358         retval = info.pos > info.offset ? info.pos - info.offset : 0;
 359 done:
 360         ahd_list_unlock(&l);
 361         return (retval);
 362 }