root/drivers/scsi/g_NCR5380.c

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DEFINITIONS

This source file includes following definitions.
  1. generic_NCR5380_setup
  2. generic_NCR53C400_setup
  3. generic_NCR5380_detect
  4. generic_NCR5380_info
  5. generic_NCR5380_release_resources
  6. generic_NCR5380_biosparam
  7. NCR5380_pread
  8. NCR5380_pwrite
  9. sprint_opcode
  10. sprint_command
  11. sprint_Scsi_Cmnd
  12. generic_NCR5380_proc_info

   1 /*
   2  * Generic Generic NCR5380 driver
   3  *      
   4  * Copyright 1993, Drew Eckhardt
   5  *      Visionary Computing
   6  *      (Unix and Linux consulting and custom programming)
   7  *      drew@colorado.edu
   8  *      +1 (303) 440-4894
   9  *
  10  * NCR53C400 extensions (c) 1994,1995,1996, Kevin Lentin
  11  *    K.Lentin@cs.monash.edu.au
  12  *
  13  * ALPHA RELEASE 1. 
  14  *
  15  * For more information, please consult 
  16  *
  17  * NCR 5380 Family
  18  * SCSI Protocol Controller
  19  * Databook
  20  *
  21  * NCR Microelectronics
  22  * 1635 Aeroplaza Drive
  23  * Colorado Springs, CO 80916
  24  * 1+ (719) 578-3400
  25  * 1+ (800) 334-5454
  26  */
  27 
  28 /* 
  29  * TODO : flesh out DMA support, find some one actually using this (I have
  30  *      a memory mapped Trantor board that works fine)
  31  */
  32 
  33 /*
  34  * Options :
  35  *
  36  * PARITY - enable parity checking.  Not supported.
  37  *
  38  * SCSI2 - enable support for SCSI-II tagged queueing.  Untested.
  39  *
  40  * USLEEP - enable support for devices that don't disconnect.  Untested.
  41  *
  42  * The card is detected and initialized in one of several ways : 
  43  * 1.  With command line overrides - NCR5380=port,irq may be 
  44  *     used on the LILO command line to override the defaults.
  45  *
  46  * 2.  With the GENERIC_NCR5380_OVERRIDE compile time define.  This is 
  47  *     specified as an array of address, irq, dma, board tuples.  Ie, for
  48  *     one board at 0x350, IRQ5, no dma, I could say  
  49  *     -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}}
  50  * 
  51  * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an 
  52  *      IRQ line if overridden on the command line.
  53  */
  54  
  55 /*
  56  * $Log: generic_NCR5380.c,v $
  57  */
  58 
  59 #define AUTOPROBE_IRQ
  60 #define AUTOSENSE
  61 
  62 #include <linux/config.h>
  63 
  64 #ifdef CONFIG_SCSI_GENERIC_NCR53C400
  65 #define NCR53C400_PSEUDO_DMA 1
  66 #define PSEUDO_DMA
  67 #define NCR53C400
  68 #define NCR5380_STATS
  69 #undef NCR5380_STAT_LIMIT
  70 #endif
  71 #if defined(CONFIG_SCSI_G_NCR5380_PORT) && defined(CONFIG_SCSI_G_NCR5380_MEM)
  72 #error You can not configure the Generic NCR 5380 SCSI Driver for memory mapped I/O and port mapped I/O at the same time (yet)
  73 #endif
  74 #if !defined(CONFIG_SCSI_G_NCR5380_PORT) && !defined(CONFIG_SCSI_G_NCR5380_MEM)
  75 #error You must configure the Generic NCR 5380 SCSI Driver for one of memory mapped I/O and port mapped I/O.
  76 #endif
  77 
  78 #include <asm/system.h>
  79 #include <asm/io.h>
  80 #include <linux/signal.h>
  81 #include <linux/sched.h>
  82 #include <linux/blk.h>
  83 #include "scsi.h"
  84 #include "hosts.h"
  85 #include "g_NCR5380.h"
  86 #include "NCR5380.h"
  87 #include "constants.h"
  88 #include "sd.h"
  89 #include<linux/stat.h>
  90 
  91 struct proc_dir_entry proc_scsi_g_ncr5380 = {
  92     PROC_SCSI_GENERIC_NCR5380, 9, "g_NCR5380",
  93     S_IFDIR | S_IRUGO | S_IXUGO, 2
  94 };
  95 
  96 static struct override {
  97         NCR5380_implementation_fields;
  98     int irq;
  99     int dma;
 100     int board;  /* Use NCR53c400, Ricoh, etc. extensions ? */
 101 } overrides 
 102 #ifdef GENERIC_NCR5380_OVERRIDE 
 103     [] = GENERIC_NCR5380_OVERRIDE
 104 #else
 105     [1] = {{0,},};
 106 #endif
 107 
 108 #define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override))
 109 
 110 /*
 111  * Function : static internal_setup(int board, char *str, int *ints)
 112  *
 113  * Purpose : LILO command line initialization of the overrides array,
 114  * 
 115  * Inputs : board - either BOARD_NCR5380 for a normal NCR5380 board, 
 116  *      or BOARD_NCR53C400 for a NCR53C400 board. str - unused, ints - 
 117  *      array of integer parameters with ints[0] equal to the number of ints.
 118  *
 119  */
 120 
 121 static void internal_setup(int board, char *str, int *ints) {
 122     static int commandline_current = 0;
 123     switch (board) {
 124     case BOARD_NCR5380:
 125         if (ints[0] != 2 && ints[0] != 3) 
 126             printk("generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n");
 127         return;
 128     case BOARD_NCR53C400:
 129         if (ints[0] != 2)
 130             printk("generic_NCR53C400_setup : usage ncr53c400= " STRVAL(NCR5380_map_name) ",irq\n");
 131         return;
 132     }
 133 
 134     if (commandline_current < NO_OVERRIDES) {
 135         overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type)ints[1];
 136         overrides[commandline_current].irq = ints[2];
 137         if (ints[0] == 3) 
 138             overrides[commandline_current].dma = ints[3];
 139         else 
 140             overrides[commandline_current].dma = DMA_NONE;
 141         overrides[commandline_current].board = board;
 142             ++commandline_current;
 143     }
 144 }
 145 
 146 /*
 147  * Function : generic_NCR5380_setup (char *str, int *ints)
 148  *
 149  * Purpose : LILO command line initialization of the overrides array,
 150  * 
 151  * Inputs : str - unused, ints - array of integer paramters with ints[0] 
 152  *      equal to the number of ints.
 153  */
 154 
 155 void generic_NCR5380_setup (char *str, int *ints) {
     /* [previous][next][first][last][top][bottom][index][help] */
 156     internal_setup (BOARD_NCR5380, str, ints);
 157 }
 158 
 159 /*
 160  * Function : generic_NCR53C400_setup (char *str, int *ints)
 161  *
 162  * Purpose : LILO command line initialization of the overrides array,
 163  * 
 164  * Inputs : str - unused, ints - array of integer paramters with ints[0] 
 165  *      equal to the number of ints.
 166  */
 167 
 168 void generic_NCR53C400_setup (char *str, int *ints) {
     /* [previous][next][first][last][top][bottom][index][help] */
 169     internal_setup (BOARD_NCR53C400, str, ints);
 170 }
 171 
 172 /* 
 173  * Function : int generic_NCR5380_detect(Scsi_Host_Template * tpnt)
 174  *
 175  * Purpose : initializes generic NCR5380 driver based on the 
 176  *      command line / compile time port and irq definitions.
 177  *
 178  * Inputs : tpnt - template for this SCSI adapter.
 179  * 
 180  * Returns : 1 if a host adapter was found, 0 if not.
 181  *
 182  */
 183 
 184 int generic_NCR5380_detect(Scsi_Host_Template * tpnt) {
     /* [previous][next][first][last][top][bottom][index][help] */
 185     static int current_override = 0;
 186     int count;
 187     int flags = 0;
 188     struct Scsi_Host *instance;
 189 
 190     tpnt->proc_dir = &proc_scsi_g_ncr5380;
 191 
 192     for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
 193         if (!(overrides[current_override].NCR5380_map_name))
 194             continue;
 195 
 196         switch (overrides[current_override].board) {
 197         case BOARD_NCR5380:
 198             flags = FLAG_NO_PSEUDO_DMA;
 199             break;
 200         case BOARD_NCR53C400:
 201             flags = FLAG_NCR53C400;
 202             break;
 203         }
 204 
 205         instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
 206         instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name;
 207 
 208         NCR5380_init(instance, flags);
 209 
 210         if (overrides[current_override].irq != IRQ_AUTO)
 211             instance->irq = overrides[current_override].irq;
 212         else 
 213             instance->irq = NCR5380_probe_irq(instance, 0xffff);
 214 
 215         if (instance->irq != IRQ_NONE) 
 216             if (request_irq(instance->irq, generic_NCR5380_intr, SA_INTERRUPT, "NCR5380", NULL)) {
 217                 printk("scsi%d : IRQ%d not free, interrupts disabled\n", 
 218                     instance->host_no, instance->irq);
 219                 instance->irq = IRQ_NONE;
 220             } 
 221 
 222         if (instance->irq == IRQ_NONE) {
 223             printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
 224             printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
 225         }
 226 
 227         printk("scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int)instance->NCR5380_instance_name);
 228         if (instance->irq == IRQ_NONE)
 229             printk (" interrupts disabled");
 230         else 
 231             printk (" irq %d", instance->irq);
 232         printk(" options CAN_QUEUE=%d  CMD_PER_LUN=%d release=%d",
 233             CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE);
 234         NCR5380_print_options(instance);
 235         printk("\n");
 236 
 237         ++current_override;
 238         ++count;
 239     }
 240     return count;
 241 }
 242 
 243 const char * generic_NCR5380_info (struct Scsi_Host* host) {
     /* [previous][next][first][last][top][bottom][index][help] */
 244     static const char string[]="Generic NCR5380/53C400 Driver";
 245     return string;
 246 }
 247 
 248 int generic_NCR5380_release_resources(struct Scsi_Host * instance)
     /* [previous][next][first][last][top][bottom][index][help] */
 249 {
 250     NCR5380_local_declare();
 251 
 252     NCR5380_setup(instance);
 253 
 254     free_irq(instance->irq, NULL);
 255 
 256         return 0;
 257 }
 258 
 259 #ifdef BIOSPARAM
 260 /*
 261  * Function : int generic_NCR5380_biosparam(Disk * disk, kdev_t dev, int *ip)
 262  *
 263  * Purpose : Generates a BIOS / DOS compatable H-C-S mapping for 
 264  *      the specified device / size.
 265  * 
 266  * Inputs : size = size of device in sectors (512 bytes), dev = block device
 267  *      major / minor, ip[] = {heads, sectors, cylinders}  
 268  *
 269  * Returns : allways 0 (success), initializes ip
 270  *      
 271  */
 272 
 273 /* 
 274  * XXX Most SCSI boards use this mapping, I could be incorrect.  Some one
 275  * using hard disks on a trantor should verify that this mapping corresponds
 276  * to that used by the BIOS / ASPI driver by running the linux fdisk program
 277  * and matching the H_C_S coordinates to what DOS uses.
 278  */
 279 
 280 int generic_NCR5380_biosparam(Disk * disk, kdev_t dev, int *ip)
     /* [previous][next][first][last][top][bottom][index][help] */
 281 {
 282   int size = disk->capacity;
 283   ip[0] = 64;
 284   ip[1] = 32;
 285   ip[2] = size >> 11;
 286   return 0;
 287 }
 288 #endif
 289 
 290 #if NCR53C400_PSEUDO_DMA
 291 static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,    int len)
     /* [previous][next][first][last][top][bottom][index][help] */
 292 {
 293     int blocks = len / 128;
 294     int start = 0;
 295     int i;
 296     int bl;
 297     NCR5380_local_declare();
 298 
 299     NCR5380_setup(instance);
 300 
 301 #if (NDEBUG & NDEBUG_C400_PREAD)
 302     printk("53C400r: About to read %d blocks for %d bytes\n", blocks, len);
 303 #endif
 304 
 305     NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR);
 306     NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
 307     while (1) {
 308     
 309 #if (NDEBUG & NDEBUG_C400_PREAD)
 310         printk("53C400r: %d blocks left\n", blocks);
 311 #endif
 312 
 313         if ((bl=NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
 314 #if (NDEBUG & NDEBUG_C400_PREAD)
 315             if (blocks)
 316                 printk("53C400r: blocks still == %d\n", blocks);
 317             else
 318                 printk("53C400r: Exiting loop\n");
 319 #endif
 320             break;
 321         }
 322 
 323 #if 1
 324         if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
 325             printk("53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
 326             return -1;
 327         }
 328 #endif
 329 
 330 #if (NDEBUG & NDEBUG_C400_PREAD)
 331         printk("53C400r: Waiting for buffer, bl=%d\n", bl);
 332 #endif
 333 
 334         while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
 335             ;
 336 #if (NDEBUG & NDEBUG_C400_PREAD)
 337         printk("53C400r: Transferring 128 bytes\n");
 338 #endif
 339 
 340 #ifdef CONFIG_SCSI_G_NCR5380_PORT
 341         for (i=0; i<128; i++)
 342             dst[start+i] = NCR5380_read(C400_HOST_BUFFER);
 343 #else
 344         /* implies CONFIG_SCSI_G_NCR5380_MEM */
 345         memmove(dst+start,NCR53C400_host_buffer+NCR5380_map_name,128);
 346 #endif
 347         start+=128;
 348         blocks--;
 349     }
 350 
 351 #if (NDEBUG & NDEBUG_C400_PREAD)
 352     printk("53C400r: EXTRA: Waiting for buffer\n");
 353 #endif
 354     while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
 355         ;
 356 
 357 #if (NDEBUG & NDEBUG_C400_PREAD)
 358     printk("53C400r: Transferring EXTRA 128 bytes\n");
 359 #endif
 360 #ifdef CONFIG_SCSI_G_NCR5380_PORT
 361         for (i=0; i<128; i++)
 362             dst[start+i] = NCR5380_read(C400_HOST_BUFFER);
 363 #else
 364         /* implies CONFIG_SCSI_G_NCR5380_MEM */
 365         memmove(dst+start,NCR53C400_host_buffer+NCR5380_map_name,128);
 366 #endif
 367     start+=128;
 368     blocks--;
 369 
 370 #if (NDEBUG & NDEBUG_C400_PREAD)
 371     printk("53C400r: Final values: blocks=%d   start=%d\n", blocks, start);
 372 #endif
 373 
 374     if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
 375         printk("53C400r: no 53C80 gated irq after transfer");
 376 #if (NDEBUG & NDEBUG_C400_PREAD)
 377     else
 378         printk("53C400r: Got 53C80 interupt and tried to clear it\n");
 379 #endif
 380 
 381 /* DON'T DO THIS - THEY NEVER ARRIVE!
 382     printk("53C400r: Waiting for 53C80 registers\n");
 383     while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
 384         ;
 385 */
 386 
 387     if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER))
 388         printk("53C400r: no end dma signal\n");
 389 #if (NDEBUG & NDEBUG_C400_PREAD)
 390     else
 391         printk("53C400r: end dma as expected\n");
 392 #endif
 393 
 394     NCR5380_write(MODE_REG, MR_BASE);
 395     NCR5380_read(RESET_PARITY_INTERRUPT_REG);
 396     return 0;
 397 }
 398                 
 399 static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,    int len)
     /* [previous][next][first][last][top][bottom][index][help] */
 400 {
 401     int blocks = len / 128;
 402     int start = 0;
 403     int i;
 404     int bl;
 405     NCR5380_local_declare();
 406 
 407     NCR5380_setup(instance);
 408 
 409 #if (NDEBUG & NDEBUG_C400_PWRITE)
 410     printk("53C400w: About to write %d blocks for %d bytes\n", blocks, len);
 411 #endif
 412 
 413     NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE);
 414     NCR5380_write(C400_BLOCK_COUNTER_REG, blocks);
 415     while (1) {
 416         if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) {
 417             printk("53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks);
 418             return -1;
 419         }
 420 
 421         if ((bl=NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) {
 422 #if (NDEBUG & NDEBUG_C400_PWRITE)
 423             if (blocks)
 424                 printk("53C400w: exiting loop, blocks still == %d\n", blocks);
 425             else
 426                 printk("53C400w: exiting loop\n");
 427 #endif
 428             break;
 429         }
 430 
 431 #if (NDEBUG & NDEBUG_C400_PWRITE)
 432         printk("53C400w: %d blocks left\n", blocks);
 433 
 434         printk("53C400w: waiting for buffer, bl=%d\n", bl);
 435 #endif
 436         while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
 437             ;
 438 
 439 #if (NDEBUG & NDEBUG_C400_PWRITE)
 440         printk("53C400w: transferring 128 bytes\n");
 441 #endif
 442 #ifdef CONFIG_SCSI_G_NCR5380_PORT
 443         for (i=0; i<128; i++)
 444             NCR5380_write(C400_HOST_BUFFER, src[start+i]);
 445 #else
 446         /* implies CONFIG_SCSI_G_NCR5380_MEM */
 447         memmove(NCR53C400_host_buffer+NCR5380_map_name,src+start,128);
 448 #endif
 449         start+=128;
 450         blocks--;
 451     }
 452     if (blocks) {
 453 #if (NDEBUG & NDEBUG_C400_PWRITE)
 454         printk("53C400w: EXTRA waiting for buffer\n");
 455 #endif
 456         while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY)
 457             ;
 458 
 459 #if (NDEBUG & NDEBUG_C400_PWRITE)
 460         printk("53C400w: transferring EXTRA 128 bytes\n");
 461 #endif
 462 #ifdef CONFIG_SCSI_G_NCR5380_PORT
 463         for (i=0; i<128; i++)
 464             NCR5380_write(C400_HOST_BUFFER, src[start+i]);
 465 #else
 466         /* implies CONFIG_SCSI_G_NCR5380_MEM */
 467         memmove(NCR53C400_host_buffer+NCR5380_map_name,src+start,128);
 468 #endif
 469         start+=128;
 470         blocks--;
 471     }
 472 #if (NDEBUG & NDEBUG_C400_PWRITE)
 473     else
 474         printk("53C400w: No EXTRA required\n");
 475 #endif
 476     
 477 #if (NDEBUG & NDEBUG_C400_PWRITE)
 478     printk("53C400w: Final values: blocks=%d   start=%d\n", blocks, start);
 479 #endif
 480 
 481 #if 0
 482     printk("53C400w: waiting for registers to be available\n");
 483     THEY NEVER DO!
 484     while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG)
 485         ;
 486     printk("53C400w: Got em\n");
 487 #endif
 488 
 489     /* Let's wait for this instead - could be ugly */
 490     /* All documentation says to check for this. Maybe my hardware is too
 491      * fast. Waiting for it seems to work fine! KLL
 492      */
 493     while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ))
 494         ;
 495 
 496     /*
 497      * I know. i is certainly != 0 here but the loop is new. See previous
 498      * comment.
 499      */
 500     if (i) {
 501 #if (NDEBUG & NDEBUG_C400_PWRITE)
 502         prink("53C400w: got 53C80 gated irq (last block)\n");
 503 #endif
 504         if (!((i=NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER))
 505             printk("53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n",i);
 506 #if (NDEBUG & NDEBUG_C400_PWRITE)
 507         else
 508             printk("53C400w: Got END OF DMA\n");
 509 #endif
 510     }
 511     else
 512         printk("53C400w: no 53C80 gated irq after transfer (last block)\n");
 513 
 514 #if 0
 515     if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) {
 516         printk("53C400w: no end dma signal\n");
 517     }
 518 #endif
 519 
 520 #if (NDEBUG & NDEBUG_C400_PWRITE)
 521     printk("53C400w: waiting for last byte...\n");
 522 #endif
 523     while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT))
 524         ;
 525 
 526 #if (NDEBUG & NDEBUG_C400_PWRITE)
 527     printk("53C400w:     got last byte.\n");
 528     printk("53C400w: pwrite exiting with status 0, whoopee!\n");
 529 #endif
 530     return 0;
 531 }
 532 #endif /* PSEUDO_DMA */
 533 
 534 #include "NCR5380.c"
 535 
 536 #define PRINTP(x) len += sprintf(buffer+len, x)
 537 #define ANDP ,
 538 
 539 static int sprint_opcode(char* buffer, int len, int opcode) {
     /* [previous][next][first][last][top][bottom][index][help] */
 540     int start = len;
 541     PRINTP("0x%02x " ANDP opcode);
 542     return len-start;
 543 }
 544 
 545 static int sprint_command (char* buffer, int len, unsigned char *command) {
     /* [previous][next][first][last][top][bottom][index][help] */
 546     int i,s,start=len;
 547     len += sprint_opcode(buffer, len, command[0]);
 548     for ( i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i)
 549         PRINTP("%02x " ANDP command[i]);
 550     PRINTP("\n");
 551     return len-start;
 552 }
 553 
 554 static int sprint_Scsi_Cmnd (char* buffer, int len, Scsi_Cmnd *cmd) {
     /* [previous][next][first][last][top][bottom][index][help] */
 555     int start = len;
 556     PRINTP("destination target %d, lun %d\n" ANDP
 557        cmd->host->host_no ANDP
 558        cmd->target ANDP
 559        cmd->lun);
 560     PRINTP("        command = ");
 561     len += sprint_command (buffer, len, cmd->cmnd);
 562     return len-start;
 563 }
 564 
 565 const char *const scsi_device_types[] =
 566 {
 567     "Direct-Access    ",
 568     "Sequential-Access",
 569     "Printer          ",
 570     "Processor        ",
 571     "WORM             ",
 572     "CD-ROM           ",
 573     "Scanner          ",
 574     "Optical Device   ",
 575     "Medium Changer   ",
 576     "Communications   "
 577 };
 578 #define MAX_SCSI_DEVICE_CODE sizeof(scsi_device_types)/sizeof(char*)
 579 
 580 int generic_NCR5380_proc_info(char* buffer, char** start, off_t offset, int length, int hostno, int inout)
     /* [previous][next][first][last][top][bottom][index][help] */
 581 {
 582     int len = 0;
 583     NCR5380_local_declare();
 584     unsigned char status;
 585     int i;
 586     struct Scsi_Host *scsi_ptr;
 587         Scsi_Device *dev;
 588     Scsi_Cmnd *ptr;
 589     struct NCR5380_hostdata *hostdata;
 590 
 591     cli();
 592 
 593     for (scsi_ptr = first_instance; scsi_ptr; scsi_ptr=scsi_ptr->next)
 594         if (scsi_ptr->host_no == hostno)
 595             break;
 596     NCR5380_setup(scsi_ptr);
 597     hostdata = (struct NCR5380_hostdata *)scsi_ptr->hostdata;
 598 
 599     PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name);
 600     PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE);
 601     PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE);
 602 #ifdef NCR53C400
 603     PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE);
 604     PRINTP("NCR53C400 card%s detected\n" ANDP  (((struct NCR5380_hostdata *)scsi_ptr->hostdata)->flags & FLAG_NCR53C400)?"":" not");
 605 # if NCR53C400_PSEUDO_DMA
 606     PRINTP("NCR53C400 pseudo DMA used\n");
 607 # endif
 608 #else
 609     PRINTP("NO NCR53C400 driver extensions\n");
 610 #endif
 611     PRINTP("Using %s mapping at %s 0x%x, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name);
 612     if (scsi_ptr->irq == IRQ_NONE)
 613         PRINTP("no interrupt\n");
 614     else
 615         PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);
 616 
 617 #ifdef NCR5380_STATS
 618     if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)
 619         PRINTP("There are commands pending, transfer rates may be crud\n");
 620     if (hostdata->pendingr)
 621         PRINTP("  %d pending reads" ANDP hostdata->pendingr);
 622     if (hostdata->pendingw)
 623         PRINTP("  %d pending writes" ANDP hostdata->pendingw);
 624     if (hostdata->pendingr || hostdata->pendingw)
 625         PRINTP("\n");
 626     for (dev = scsi_devices; dev; dev=dev->next) {
 627         if (dev->host == scsi_ptr) {
 628             unsigned long br = hostdata->bytes_read[dev->id];
 629             unsigned long bw = hostdata->bytes_write[dev->id];
 630             long tr = hostdata->time_read[dev->id] / HZ;
 631             long tw = hostdata->time_write[dev->id] / HZ;
 632 
 633             PRINTP("  T:%d %s " ANDP dev->id ANDP (dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int)dev->type] : "Unknown");
 634             for (i=0; i<8; i++)
 635                 if (dev->vendor[i] >= 0x20)
 636                     *(buffer+(len++)) = dev->vendor[i];
 637             *(buffer+(len++)) = ' ';
 638             for (i=0; i<16; i++)
 639                 if (dev->model[i] >= 0x20)
 640                     *(buffer+(len++)) = dev->model[i];
 641             *(buffer+(len++)) = ' ';
 642             for (i=0; i<4; i++)
 643                 if (dev->rev[i] >= 0x20)
 644                     *(buffer+(len++)) = dev->rev[i];
 645             *(buffer+(len++)) = ' ';
 646                                     
 647             PRINTP("\n%10d kb read    in %5d secs" ANDP br/1024 ANDP tr);
 648             if (tr)
 649                 PRINTP(" @ %5d bps" ANDP br / tr); 
 650 
 651             PRINTP("\n%10d kb written in %5d secs" ANDP bw/1024 ANDP tw);
 652             if (tw)
 653                 PRINTP(" @ %5d bps" ANDP bw / tw); 
 654             PRINTP("\n");
 655         }
 656     }
 657 #endif
 658         
 659     status = NCR5380_read(STATUS_REG);
 660     if (!(status & SR_REQ))
 661         PRINTP("REQ not asserted, phase unknown.\n");
 662     else {
 663         for (i = 0; (phases[i].value != PHASE_UNKNOWN) &&
 664                     (phases[i].value != (status & PHASE_MASK)); ++i)
 665             ;
 666         PRINTP("Phase %s\n" ANDP phases[i].name);
 667     }
 668 
 669     if (!hostdata->connected) {
 670         PRINTP("No currently connected command\n");
 671     } else {
 672         len += sprint_Scsi_Cmnd (buffer, len, (Scsi_Cmnd *) hostdata->connected);
 673     }
 674 
 675     PRINTP("issue_queue\n");
 676 
 677     for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr;
 678                 ptr = (Scsi_Cmnd *) ptr->host_scribble)
 679         len += sprint_Scsi_Cmnd (buffer, len, ptr);
 680 
 681     PRINTP("disconnected_queue\n");
 682 
 683     for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr;
 684                 ptr = (Scsi_Cmnd *) ptr->host_scribble)
 685         len += sprint_Scsi_Cmnd (buffer, len, ptr);
 686         
 687     *start = buffer + offset;
 688     len -= offset;
 689     if (len > length)
 690             len = length;
 691     sti();
 692     return len;
 693 }
 694 
 695 #undef PRINTP
 696 #undef ANDP
 697 
 698 #ifdef MODULE
 699 /* Eventually this will go into an include file, but this will be later */
 700 Scsi_Host_Template driver_template = GENERIC_NCR5380;
 701 
 702 #include <linux/module.h>
 703 #include "scsi_module.c"
 704 #endif

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