drivers/scsi/aic7xxx_old/aic7xxx_proc.c

   1 /*+M*************************************************************************
   2  * Adaptec AIC7xxx device driver proc support for Linux.
   3  *
   4  * Copyright (c) 1995, 1996 Dean W. Gehnert
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2, or (at your option)
   9  * any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; see the file COPYING.  If not, write to
  18  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  19  *
  20  * ----------------------------------------------------------------
  21  *  o Modified from the EATA-DMA /proc support.
  22  *  o Additional support for device block statistics provided by
  23  *    Matthew Jacob.
  24  *  o Correction of overflow by Heinz Mauelshagen
  25  *  o Adittional corrections by Doug Ledford
  26  *
  27  *  Dean W. Gehnert, deang@teleport.com, 05/01/96
  28  *
  29  *  $Id: aic7xxx_proc.c,v 4.1 1997/06/97 08:23:42 deang Exp $
  30  *-M*************************************************************************/
  31
  32
  33 #define BLS     (&aic7xxx_buffer[size])
  34 #define HDRB \
  35 "               0 - 4K   4 - 16K   16 - 64K  64 - 256K  256K - 1M        1M+"
  36
  37 #ifdef PROC_DEBUG
  38 extern int vsprintf(char *, const char *, va_list);
  39
  40 static void
  41 proc_debug(const char *fmt, ...)
  42 {
  43   va_list ap;
  44   char buf[256];
  45
  46   va_start(ap, fmt);
  47   vsprintf(buf, fmt, ap);
  48   printk(buf);
  49   va_end(ap);
  50 }
  51 #else /* PROC_DEBUG */
  52 #  define proc_debug(fmt, args...)
  53 #endif /* PROC_DEBUG */
  54
  55 static int aic7xxx_buffer_size = 0;
  56 static char *aic7xxx_buffer = NULL;
  57
  58
  59 /*+F*************************************************************************
  60  * Function:
  61  *   aic7xxx_set_info
  62  *
  63  * Description:
  64  *   Set parameters for the driver from the /proc filesystem.
  65  *-F*************************************************************************/
  66 static int
  67 aic7xxx_set_info(char *buffer, int length, struct Scsi_Host *HBAptr)
  68 {
  69   proc_debug("aic7xxx_set_info(): %s\n", buffer);
  70   return (-ENOSYS);  /* Currently this is a no-op */
  71 }
  72
  73
  74 /*+F*************************************************************************
  75  * Function:
  76  *   aic7xxx_proc_info
  77  *
  78  * Description:
  79  *   Return information to handle /proc support for the driver.
  80  *-F*************************************************************************/
  81 int
  82 aic7xxx_proc_info ( struct Scsi_Host *HBAptr, char *buffer, char **start, off_t offset, int length,
  83                     int inout)
  84 {
  85   struct aic7xxx_host *p;
  86   struct aic_dev_data *aic_dev;
  87   struct scsi_device *sdptr;
  88   int    size = 0;
  89   unsigned char i;
  90   unsigned char tindex;
  91
  92   for(p=first_aic7xxx; p && p->host != HBAptr; p=p->next)
  93     ;
  94
  95   if (!p)
  96   {
  97     size += sprintf(buffer, "Can't find adapter for host number %d\n", HBAptr->host_no);
  98     if (size > length)
  99     {
 100       return (size);
 101     }
 102     else
 103     {
 104       return (length);
 105     }
 106   }
 107
 108   if (inout == TRUE) /* Has data been written to the file? */
 109   {
 110     return (aic7xxx_set_info(buffer, length, HBAptr));
 111   }
 112
 113   p = (struct aic7xxx_host *) HBAptr->hostdata;
 114
 115   /*
 116    * It takes roughly 1K of space to hold all relevant card info, not
 117    * counting any proc stats, so we start out with a 1.5k buffer size and
 118    * if proc_stats is defined, then we sweep the stats structure to see
 119    * how many drives we will be printing out for and add 384 bytes per
 120    * device with active stats.
 121    *
 122    * Hmmmm...that 1.5k seems to keep growing as items get added so they
 123    * can be easily viewed for debugging purposes.  So, we bumped that
 124    * 1.5k to 4k so we can quit having to bump it all the time.
 125    */
 126
 127   size = 4096;
 128   list_for_each_entry(aic_dev, &p->aic_devs, list)
 129     size += 512;
 130   if (aic7xxx_buffer_size != size)
 131   {
 132     if (aic7xxx_buffer != NULL)
 133     {
 134       kfree(aic7xxx_buffer);
 135       aic7xxx_buffer_size = 0;
 136     }
 137     aic7xxx_buffer = kmalloc(size, GFP_KERNEL);
 138   }
 139   if (aic7xxx_buffer == NULL)
 140   {
 141     size = sprintf(buffer, "AIC7xxx - kmalloc error at line %d\n",
 142         __LINE__);
 143     return size;
 144   }
 145   aic7xxx_buffer_size = size;
 146
 147   size = 0;
 148   size += sprintf(BLS, "Adaptec AIC7xxx driver version: ");
 149   size += sprintf(BLS, "%s/", AIC7XXX_C_VERSION);
 150   size += sprintf(BLS, "%s", AIC7XXX_H_VERSION);
 151   size += sprintf(BLS, "\n");
 152   size += sprintf(BLS, "Adapter Configuration:\n");
 153   size += sprintf(BLS, "           SCSI Adapter: %s\n",
 154       board_names[p->board_name_index]);
 155   if (p->flags & AHC_TWIN)
 156     size += sprintf(BLS, "                         Twin Channel Controller ");
 157   else
 158   {
 159     char *channel = "";
 160     char *ultra = "";
 161     char *wide = "Narrow ";
 162     if (p->flags & AHC_MULTI_CHANNEL)
 163     {
 164       channel = " Channel A";
 165       if (p->flags & (AHC_CHNLB|AHC_CHNLC))
 166         channel = (p->flags & AHC_CHNLB) ? " Channel B" : " Channel C";
 167     }
 168     if (p->features & AHC_WIDE)
 169       wide = "Wide ";
 170     if (p->features & AHC_ULTRA3)
 171     {
 172       switch(p->chip & AHC_CHIPID_MASK)
 173       {
 174         case AHC_AIC7892:
 175         case AHC_AIC7899:
 176           ultra = "Ultra-160/m LVD/SE ";
 177           break;
 178         default:
 179           ultra = "Ultra-3 LVD/SE ";
 180           break;
 181       }
 182     }
 183     else if (p->features & AHC_ULTRA2)
 184       ultra = "Ultra-2 LVD/SE ";
 185     else if (p->features & AHC_ULTRA)
 186       ultra = "Ultra ";
 187     size += sprintf(BLS, "                           %s%sController%s ",
 188       ultra, wide, channel);
 189   }
 190   switch(p->chip & ~AHC_CHIPID_MASK)
 191   {
 192     case AHC_VL:
 193       size += sprintf(BLS, "at VLB slot %d\n", p->pci_device_fn);
 194       break;
 195     case AHC_EISA:
 196       size += sprintf(BLS, "at EISA slot %d\n", p->pci_device_fn);
 197       break;
 198     default:
 199       size += sprintf(BLS, "at PCI %d/%d/%d\n", p->pci_bus,
 200         PCI_SLOT(p->pci_device_fn), PCI_FUNC(p->pci_device_fn));
 201       break;
 202   }
 203   if( !(p->maddr) )
 204   {
 205     size += sprintf(BLS, "    Programmed I/O Base: %lx\n", p->base);
 206   }
 207   else
 208   {
 209     size += sprintf(BLS, "    PCI MMAPed I/O Base: 0x%lx\n", p->mbase);
 210   }
 211   if( (p->chip & (AHC_VL | AHC_EISA)) )
 212   {
 213     size += sprintf(BLS, "    BIOS Memory Address: 0x%08x\n", p->bios_address);
 214   }
 215   size += sprintf(BLS, " Adapter SEEPROM Config: %s\n",
 216           (p->flags & AHC_SEEPROM_FOUND) ? "SEEPROM found and used." :
 217          ((p->flags & AHC_USEDEFAULTS) ? "SEEPROM not found, using defaults." :
 218            "SEEPROM not found, using leftover BIOS values.") );
 219   size += sprintf(BLS, "      Adaptec SCSI BIOS: %s\n",
 220           (p->flags & AHC_BIOS_ENABLED) ? "Enabled" : "Disabled");
 221   size += sprintf(BLS, "                    IRQ: %d\n", HBAptr->irq);
 222   size += sprintf(BLS, "                   SCBs: Active %d, Max Active %d,\n",
 223             p->activescbs, p->max_activescbs);
 224   size += sprintf(BLS, "                         Allocated %d, HW %d, "
 225             "Page %d\n", p->scb_data->numscbs, p->scb_data->maxhscbs,
 226             p->scb_data->maxscbs);
 227   if (p->flags & AHC_EXTERNAL_SRAM)
 228     size += sprintf(BLS, "                         Using External SCB SRAM\n");
 229   size += sprintf(BLS, "             Interrupts: %ld", p->isr_count);
 230   if (p->chip & AHC_EISA)
 231   {
 232     size += sprintf(BLS, " %s\n",
 233         (p->pause & IRQMS) ? "(Level Sensitive)" : "(Edge Triggered)");
 234   }
 235   else
 236   {
 237     size += sprintf(BLS, "\n");
 238   }
 239   size += sprintf(BLS, "      BIOS Control Word: 0x%04x\n",
 240             p->bios_control);
 241   size += sprintf(BLS, "   Adapter Control Word: 0x%04x\n",
 242             p->adapter_control);
 243   size += sprintf(BLS, "   Extended Translation: %sabled\n",
 244       (p->flags & AHC_EXTEND_TRANS_A) ? "En" : "Dis");
 245   size += sprintf(BLS, "Disconnect Enable Flags: 0x%04x\n", p->discenable);
 246   if (p->features & (AHC_ULTRA | AHC_ULTRA2))
 247   {
 248     size += sprintf(BLS, "     Ultra Enable Flags: 0x%04x\n", p->ultraenb);
 249   }
 250   size += sprintf(BLS, "Default Tag Queue Depth: %d\n", aic7xxx_default_queue_depth);
 251   size += sprintf(BLS, "    Tagged Queue By Device array for aic7xxx host "
 252                        "instance %d:\n", p->instance);
 253   size += sprintf(BLS, "      {");
 254   for(i=0; i < (MAX_TARGETS - 1); i++)
 255     size += sprintf(BLS, "%d,",aic7xxx_tag_info[p->instance].tag_commands[i]);
 256   size += sprintf(BLS, "%d}\n",aic7xxx_tag_info[p->instance].tag_commands[i]);
 257
 258   size += sprintf(BLS, "\n");
 259   size += sprintf(BLS, "Statistics:\n\n");
 260   list_for_each_entry(aic_dev, &p->aic_devs, list)
 261   {
 262     sdptr = aic_dev->SDptr;
 263     tindex = sdptr->channel << 3 | sdptr->id;
 264     size += sprintf(BLS, "(scsi%d:%d:%d:%d)\n",
 265         p->host_no, sdptr->channel, sdptr->id, sdptr->lun);
 266     size += sprintf(BLS, "  Device using %s/%s",
 267           (aic_dev->cur.width == MSG_EXT_WDTR_BUS_16_BIT) ?
 268           "Wide" : "Narrow",
 269           (aic_dev->cur.offset != 0) ?
 270           "Sync transfers at " : "Async transfers.\n" );
 271     if (aic_dev->cur.offset != 0)
 272     {
 273       struct aic7xxx_syncrate *sync_rate;
 274       unsigned char options = aic_dev->cur.options;
 275       int period = aic_dev->cur.period;
 276       int rate = (aic_dev->cur.width ==
 277                   MSG_EXT_WDTR_BUS_16_BIT) ? 1 : 0;
 278
 279       sync_rate = aic7xxx_find_syncrate(p, &period, 0, &options);
 280       if (sync_rate != NULL)
 281       {
 282         size += sprintf(BLS, "%s MByte/sec, offset %d\n",
 283                         sync_rate->rate[rate],
 284                         aic_dev->cur.offset );
 285       }
 286       else
 287       {
 288         size += sprintf(BLS, "3.3 MByte/sec, offset %d\n",
 289                         aic_dev->cur.offset );
 290       }
 291     }
 292     size += sprintf(BLS, "  Transinfo settings: ");
 293     size += sprintf(BLS, "current(%d/%d/%d/%d), ",
 294                     aic_dev->cur.period,
 295                     aic_dev->cur.offset,
 296                     aic_dev->cur.width,
 297                     aic_dev->cur.options);
 298     size += sprintf(BLS, "goal(%d/%d/%d/%d), ",
 299                     aic_dev->goal.period,
 300                     aic_dev->goal.offset,
 301                     aic_dev->goal.width,
 302                     aic_dev->goal.options);
 303     size += sprintf(BLS, "user(%d/%d/%d/%d)\n",
 304                     p->user[tindex].period,
 305                     p->user[tindex].offset,
 306                     p->user[tindex].width,
 307                     p->user[tindex].options);
 308     if(sdptr->simple_tags)
 309     {
 310       size += sprintf(BLS, "  Tagged Command Queueing Enabled, Ordered Tags %s, Depth %d/%d\n", sdptr->ordered_tags ? "Enabled" : "Disabled", sdptr->queue_depth, aic_dev->max_q_depth);
 311     }
 312     if(aic_dev->barrier_total)
 313       size += sprintf(BLS, "  Total transfers %ld:\n    (%ld/%ld/%ld/%ld reads/writes/REQ_BARRIER/Ordered Tags)\n",
 314         aic_dev->r_total+aic_dev->w_total, aic_dev->r_total, aic_dev->w_total,
 315         aic_dev->barrier_total, aic_dev->ordered_total);
 316     else
 317       size += sprintf(BLS, "  Total transfers %ld:\n    (%ld/%ld reads/writes)\n",
 318         aic_dev->r_total+aic_dev->w_total, aic_dev->r_total, aic_dev->w_total);
 319     size += sprintf(BLS, "%s\n", HDRB);
 320     size += sprintf(BLS, "   Reads:");
 321     for (i = 0; i < ARRAY_SIZE(aic_dev->r_bins); i++)
 322     {
 323       size += sprintf(BLS, " %10ld", aic_dev->r_bins[i]);
 324     }
 325     size += sprintf(BLS, "\n");
 326     size += sprintf(BLS, "  Writes:");
 327     for (i = 0; i < ARRAY_SIZE(aic_dev->w_bins); i++)
 328     {
 329       size += sprintf(BLS, " %10ld", aic_dev->w_bins[i]);
 330     }
 331     size += sprintf(BLS, "\n");
 332     size += sprintf(BLS, "\n\n");
 333   }
 334   if (size >= aic7xxx_buffer_size)
 335   {
 336     printk(KERN_WARNING "aic7xxx: Overflow in aic7xxx_proc.c\n");
 337   }
 338
 339   if (offset > size - 1)
 340   {
 341     kfree(aic7xxx_buffer);
 342     aic7xxx_buffer = NULL;
 343     aic7xxx_buffer_size = length = 0;
 344     *start = NULL;
 345   }
 346   else
 347   {
 348     *start = buffer;
 349     length = min_t(int, length, size - offset);
 350     memcpy(buffer, &aic7xxx_buffer[offset], length);
 351   }
 352
 353   return (length);
 354 }
 355
 356 /*
 357  * Overrides for Emacs so that we follow Linus's tabbing style.
 358  * Emacs will notice this stuff at the end of the file and automatically
 359  * adjust the settings for this buffer only.  This must remain at the end
 360  * of the file.
 361  * ---------------------------------------------------------------------------
 362  * Local variables:
 363  * c-indent-level: 2
 364  * c-brace-imaginary-offset: 0
 365  * c-brace-offset: -2
 366  * c-argdecl-indent: 2
 367  * c-label-offset: -2
 368  * c-continued-statement-offset: 2
 369  * c-continued-brace-offset: 0
 370  * indent-tabs-mode: nil
 371  * tab-width: 8
 372  * End:
 373  */