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 * NCR53C400A extensions (c) 1996, Ingmar Baumgart 14 * ingmar@gonzo.schwaben.de 15 * 16 * DTC3181E extensions (c) 1997, Ronald van Cuijlenborg 17 * ronald.van.cuijlenborg@tip.nl or nutty@dds.nl 18 * 19 * Added ISAPNP support for DTC436 adapters, 20 * Thomas Sailer, sailer@ife.ee.ethz.ch 21 * 22 * ALPHA RELEASE 1. 23 * 24 * For more information, please consult 25 * 26 * NCR 5380 Family 27 * SCSI Protocol Controller 28 * Databook 29 * 30 * NCR Microelectronics 31 * 1635 Aeroplaza Drive 32 * Colorado Springs, CO 80916 33 * 1+ (719) 578-3400 34 * 1+ (800) 334-5454 35 */ 36 37 /* 38 * TODO : flesh out DMA support, find some one actually using this (I have 39 * a memory mapped Trantor board that works fine) 40 */ 41 42 /* 43 * Options : 44 * 45 * PARITY - enable parity checking. Not supported. 46 * 47 * SCSI2 - enable support for SCSI-II tagged queueing. Untested. 48 * 49 * USLEEP - enable support for devices that don't disconnect. Untested. 50 * 51 * The card is detected and initialized in one of several ways : 52 * 1. With command line overrides - NCR5380=port,irq may be 53 * used on the LILO command line to override the defaults. 54 * 55 * 2. With the GENERIC_NCR5380_OVERRIDE compile time define. This is 56 * specified as an array of address, irq, dma, board tuples. Ie, for 57 * one board at 0x350, IRQ5, no dma, I could say 58 * -DGENERIC_NCR5380_OVERRIDE={{0xcc000, 5, DMA_NONE, BOARD_NCR5380}} 59 * 60 * -1 should be specified for no or DMA interrupt, -2 to autoprobe for an 61 * IRQ line if overridden on the command line. 62 * 63 * 3. When included as a module, with arguments passed on the command line: 64 * ncr_irq=xx the interrupt 65 * ncr_addr=xx the port or base address (for port or memory 66 * mapped, resp.) 67 * ncr_dma=xx the DMA 68 * ncr_5380=1 to set up for a NCR5380 board 69 * ncr_53c400=1 to set up for a NCR53C400 board 70 * e.g. 71 * modprobe g_NCR5380 ncr_irq=5 ncr_addr=0x350 ncr_5380=1 72 * for a port mapped NCR5380 board or 73 * modprobe g_NCR5380 ncr_irq=255 ncr_addr=0xc8000 ncr_53c400=1 74 * for a memory mapped NCR53C400 board with interrupts disabled. 75 * 76 * 255 should be specified for no or DMA interrupt, 254 to autoprobe for an 77 * IRQ line if overridden on the command line. 78 * 79 */ 80 81 /* 82 * $Log: generic_NCR5380.c,v $ 83 */ 84 85 /* settings for DTC3181E card with only Mustek scanner attached */ 86 #define USLEEP 87 #define USLEEP_POLL 1 88 #define USLEEP_SLEEP 20 89 #define USLEEP_WAITLONG 500 90 91 #define AUTOPROBE_IRQ 92 #define AUTOSENSE 93 94 #include <linux/config.h> 95 96 #ifdef CONFIG_SCSI_GENERIC_NCR53C400 97 #define NCR53C400_PSEUDO_DMA 1 98 #define PSEUDO_DMA 99 #define NCR53C400 100 #define NCR5380_STATS 101 #undef NCR5380_STAT_LIMIT 102 #endif 103 104 #include <asm/system.h> 105 #include <asm/io.h> 106 #include <linux/signal.h> 107 #include <linux/sched.h> 108 #include <linux/blkdev.h> 109 #include "scsi.h" 110 #include <scsi/scsi_host.h> 111 #include "g_NCR5380.h" 112 #include "NCR5380.h" 113 #include <linux/stat.h> 114 #include <linux/init.h> 115 #include <linux/ioport.h> 116 #include <linux/isapnp.h> 117 #include <linux/delay.h> 118 #include <linux/interrupt.h> 119 120 #define NCR_NOT_SET 0 121 static int ncr_irq = NCR_NOT_SET; 122 static int ncr_dma = NCR_NOT_SET; 123 static int ncr_addr = NCR_NOT_SET; 124 static int ncr_5380 = NCR_NOT_SET; 125 static int ncr_53c400 = NCR_NOT_SET; 126 static int ncr_53c400a = NCR_NOT_SET; 127 static int dtc_3181e = NCR_NOT_SET; 128 129 static struct override { 130 NCR5380_implementation_fields; 131 int irq; 132 int dma; 133 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ 134 } overrides 135 #ifdef GENERIC_NCR5380_OVERRIDE 136 [] __initdata = GENERIC_NCR5380_OVERRIDE; 137 #else 138 [1] __initdata = { { 0,},}; 139 #endif 140 141 142 #define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override)) 143 144 #ifndef MODULE 145 146 /** 147 * internal_setup - handle lilo command string override 148 * @board: BOARD_* identifier for the board 149 * @str: unused 150 * @ints: numeric parameters 151 * 152 * Do LILO command line initialization of the overrides array. Display 153 * errors when needed 154 * 155 * Locks: none 156 */ 157 158 static void __init internal_setup(int board, char *str, int *ints) 159 { 160 static int commandline_current = 0; 161 switch (board) { 162 case BOARD_NCR5380: 163 if (ints[0] != 2 && ints[0] != 3) { 164 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); 165 return; 166 } 167 break; 168 case BOARD_NCR53C400: 169 if (ints[0] != 2) { 170 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); 171 return; 172 } 173 break; 174 case BOARD_NCR53C400A: 175 if (ints[0] != 2) { 176 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); 177 return; 178 } 179 break; 180 case BOARD_DTC3181E: 181 if (ints[0] != 2) { 182 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); 183 return; 184 } 185 break; 186 } 187 188 if (commandline_current < NO_OVERRIDES) { 189 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; 190 overrides[commandline_current].irq = ints[2]; 191 if (ints[0] == 3) 192 overrides[commandline_current].dma = ints[3]; 193 else 194 overrides[commandline_current].dma = DMA_NONE; 195 overrides[commandline_current].board = board; 196 ++commandline_current; 197 } 198 } 199 200 201 /** 202 * do_NCR53C80_setup - set up entry point 203 * @str: unused 204 * 205 * Setup function invoked at boot to parse the ncr5380= command 206 * line. 207 */ 208 209 static int __init do_NCR5380_setup(char *str) 210 { 211 int ints[10]; 212 213 get_options(str, sizeof(ints) / sizeof(int), ints); 214 internal_setup(BOARD_NCR5380, str, ints); 215 return 1; 216 } 217 218 /** 219 * do_NCR53C400_setup - set up entry point 220 * @str: unused 221 * @ints: integer parameters from kernel setup code 222 * 223 * Setup function invoked at boot to parse the ncr53c400= command 224 * line. 225 */ 226 227 static int __init do_NCR53C400_setup(char *str) 228 { 229 int ints[10]; 230 231 get_options(str, sizeof(ints) / sizeof(int), ints); 232 internal_setup(BOARD_NCR53C400, str, ints); 233 return 1; 234 } 235 236 /** 237 * do_NCR53C400A_setup - set up entry point 238 * @str: unused 239 * @ints: integer parameters from kernel setup code 240 * 241 * Setup function invoked at boot to parse the ncr53c400a= command 242 * line. 243 */ 244 245 static int __init do_NCR53C400A_setup(char *str) 246 { 247 int ints[10]; 248 249 get_options(str, sizeof(ints) / sizeof(int), ints); 250 internal_setup(BOARD_NCR53C400A, str, ints); 251 return 1; 252 } 253 254 /** 255 * do_DTC3181E_setup - set up entry point 256 * @str: unused 257 * @ints: integer parameters from kernel setup code 258 * 259 * Setup function invoked at boot to parse the dtc3181e= command 260 * line. 261 */ 262 263 static int __init do_DTC3181E_setup(char *str) 264 { 265 int ints[10]; 266 267 get_options(str, sizeof(ints) / sizeof(int), ints); 268 internal_setup(BOARD_DTC3181E, str, ints); 269 return 1; 270 } 271 272 #endif 273 274 /** 275 * generic_NCR5380_detect - look for NCR5380 controllers 276 * @tpnt: the scsi template 277 * 278 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E 279 * and DTC436(ISAPnP) controllers. If overrides have been set we use 280 * them. 281 * 282 * The caller supplied NCR5380_init function is invoked from here, before 283 * the interrupt line is taken. 284 * 285 * Locks: none 286 */ 287 288 int __init generic_NCR5380_detect(struct scsi_host_template * tpnt) 289 { 290 static int current_override = 0; 291 int count, i; 292 unsigned int *ports; 293 unsigned long region_size = 16; 294 static unsigned int __initdata ncr_53c400a_ports[] = { 295 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 296 }; 297 static unsigned int __initdata dtc_3181e_ports[] = { 298 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 299 }; 300 int flags = 0; 301 struct Scsi_Host *instance; 302 303 if (ncr_irq != NCR_NOT_SET) 304 overrides[0].irq = ncr_irq; 305 if (ncr_dma != NCR_NOT_SET) 306 overrides[0].dma = ncr_dma; 307 if (ncr_addr != NCR_NOT_SET) 308 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; 309 if (ncr_5380 != NCR_NOT_SET) 310 overrides[0].board = BOARD_NCR5380; 311 else if (ncr_53c400 != NCR_NOT_SET) 312 overrides[0].board = BOARD_NCR53C400; 313 else if (ncr_53c400a != NCR_NOT_SET) 314 overrides[0].board = BOARD_NCR53C400A; 315 else if (dtc_3181e != NCR_NOT_SET) 316 overrides[0].board = BOARD_DTC3181E; 317 318 if (!current_override && isapnp_present()) { 319 struct pnp_dev *dev = NULL; 320 count = 0; 321 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { 322 if (count >= NO_OVERRIDES) 323 break; 324 if (pnp_device_attach(dev) < 0) { 325 printk(KERN_ERR "dtc436e probe: attach failed\n"); 326 continue; 327 } 328 if (pnp_activate_dev(dev) < 0) { 329 printk(KERN_ERR "dtc436e probe: activate failed\n"); 330 pnp_device_detach(dev); 331 continue; 332 } 333 if (!pnp_port_valid(dev, 0)) { 334 printk(KERN_ERR "dtc436e probe: no valid port\n"); 335 pnp_device_detach(dev); 336 continue; 337 } 338 if (pnp_irq_valid(dev, 0)) 339 overrides[count].irq = pnp_irq(dev, 0); 340 else 341 overrides[count].irq = SCSI_IRQ_NONE; 342 if (pnp_dma_valid(dev, 0)) 343 overrides[count].dma = pnp_dma(dev, 0); 344 else 345 overrides[count].dma = DMA_NONE; 346 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); 347 overrides[count].board = BOARD_DTC3181E; 348 count++; 349 } 350 } 351 352 tpnt->proc_name = "g_NCR5380"; 353 354 for (count = 0; current_override < NO_OVERRIDES; ++current_override) { 355 if (!(overrides[current_override].NCR5380_map_name)) 356 continue; 357 358 ports = NULL; 359 switch (overrides[current_override].board) { 360 case BOARD_NCR5380: 361 flags = FLAG_NO_PSEUDO_DMA; 362 break; 363 case BOARD_NCR53C400: 364 flags = FLAG_NCR53C400; 365 break; 366 case BOARD_NCR53C400A: 367 flags = FLAG_NO_PSEUDO_DMA; 368 ports = ncr_53c400a_ports; 369 break; 370 case BOARD_DTC3181E: 371 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E; 372 ports = dtc_3181e_ports; 373 break; 374 } 375 376 #ifndef CONFIG_SCSI_G_NCR5380_MEM 377 if (ports) { 378 /* wakeup sequence for the NCR53C400A and DTC3181E */ 379 380 /* Disable the adapter and look for a free io port */ 381 outb(0x59, 0x779); 382 outb(0xb9, 0x379); 383 outb(0xc5, 0x379); 384 outb(0xae, 0x379); 385 outb(0xa6, 0x379); 386 outb(0x00, 0x379); 387 388 if (overrides[current_override].NCR5380_map_name != PORT_AUTO) 389 for (i = 0; ports[i]; i++) { 390 if (!request_region(ports[i], 16, "ncr53c80")) 391 continue; 392 if (overrides[current_override].NCR5380_map_name == ports[i]) 393 break; 394 release_region(ports[i], 16); 395 } else 396 for (i = 0; ports[i]; i++) { 397 if (!request_region(ports[i], 16, "ncr53c80")) 398 continue; 399 if (inb(ports[i]) == 0xff) 400 break; 401 release_region(ports[i], 16); 402 } 403 if (ports[i]) { 404 /* At this point we have our region reserved */ 405 outb(0x59, 0x779); 406 outb(0xb9, 0x379); 407 outb(0xc5, 0x379); 408 outb(0xae, 0x379); 409 outb(0xa6, 0x379); 410 outb(0x80 | i, 0x379); /* set io port to be used */ 411 outb(0xc0, ports[i] + 9); 412 if (inb(ports[i] + 9) != 0x80) 413 continue; 414 else 415 overrides[current_override].NCR5380_map_name = ports[i]; 416 } else 417 continue; 418 } 419 else 420 { 421 /* Not a 53C400A style setup - just grab */ 422 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) 423 continue; 424 region_size = NCR5380_region_size; 425 } 426 #else 427 if(!request_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380")) 428 continue; 429 #endif 430 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); 431 if (instance == NULL) { 432 #ifndef CONFIG_SCSI_G_NCR5380_MEM 433 release_region(overrides[current_override].NCR5380_map_name, region_size); 434 #else 435 release_mem_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size); 436 #endif 437 continue; 438 } 439 440 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name; 441 #ifndef CONFIG_SCSI_G_NCR5380_MEM 442 instance->n_io_port = region_size; 443 #endif 444 445 NCR5380_init(instance, flags); 446 447 if (overrides[current_override].irq != IRQ_AUTO) 448 instance->irq = overrides[current_override].irq; 449 else 450 instance->irq = NCR5380_probe_irq(instance, 0xffff); 451 452 if (instance->irq != SCSI_IRQ_NONE) 453 if (request_irq(instance->irq, generic_NCR5380_intr, SA_INTERRUPT, "NCR5380", instance)) { 454 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); 455 instance->irq = SCSI_IRQ_NONE; 456 } 457 458 if (instance->irq == SCSI_IRQ_NONE) { 459 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); 460 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); 461 } 462 463 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name); 464 if (instance->irq == SCSI_IRQ_NONE) 465 printk(" interrupts disabled"); 466 else 467 printk(" irq %d", instance->irq); 468 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE); 469 NCR5380_print_options(instance); 470 printk("\n"); 471 472 ++current_override; 473 ++count; 474 } 475 return count; 476 } 477 478 /** 479 * generic_NCR5380_info - reporting string 480 * @host: NCR5380 to report on 481 * 482 * Report driver information for the NCR5380 483 */ 484 485 const char *generic_NCR5380_info(struct Scsi_Host *host) 486 { 487 static const char string[] = "Generic NCR5380/53C400 Driver"; 488 return string; 489 } 490 491 /** 492 * generic_NCR5380_release_resources - free resources 493 * @instance: host adapter to clean up 494 * 495 * Free the generic interface resources from this adapter. 496 * 497 * Locks: none 498 */ 499 500 int generic_NCR5380_release_resources(struct Scsi_Host *instance) 501 { 502 NCR5380_local_declare(); 503 NCR5380_setup(instance); 504 505 if (instance->irq != SCSI_IRQ_NONE) 506 free_irq(instance->irq, NULL); 507 NCR5380_exit(instance); 508 509 #ifndef CONFIG_SCSI_G_NCR5380_MEM 510 release_region(instance->NCR5380_instance_name, instance->n_io_port); 511 #else 512 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size); 513 #endif 514 515 516 return 0; 517 } 518 519 #ifdef BIOSPARAM 520 /** 521 * generic_NCR5380_biosparam 522 * @disk: disk to compute geometry for 523 * @dev: device identifier for this disk 524 * @ip: sizes to fill in 525 * 526 * Generates a BIOS / DOS compatible H-C-S mapping for the specified 527 * device / size. 528 * 529 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone 530 * using hard disks on a trantor should verify that this mapping 531 * corresponds to that used by the BIOS / ASPI driver by running the linux 532 * fdisk program and matching the H_C_S coordinates to what DOS uses. 533 * 534 * Locks: none 535 */ 536 537 static int 538 generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, 539 sector_t capacity, int *ip) 540 { 541 ip[0] = 64; 542 ip[1] = 32; 543 ip[2] = capacity >> 11; 544 return 0; 545 } 546 #endif 547 548 #if NCR53C400_PSEUDO_DMA 549 550 /** 551 * NCR5380_pread - pseudo DMA read 552 * @instance: adapter to read from 553 * @dst: buffer to read into 554 * @len: buffer length 555 * 556 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 557 * controller 558 */ 559 560 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) 561 { 562 int blocks = len / 128; 563 int start = 0; 564 int bl; 565 566 NCR5380_local_declare(); 567 NCR5380_setup(instance); 568 569 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); 570 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 571 while (1) { 572 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 573 break; 574 } 575 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 576 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 577 return -1; 578 } 579 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); 580 581 #ifndef CONFIG_SCSI_G_NCR5380_MEM 582 { 583 int i; 584 for (i = 0; i < 128; i++) 585 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 586 } 587 #else 588 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 589 isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128); 590 #endif 591 start += 128; 592 blocks--; 593 } 594 595 if (blocks) { 596 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 597 { 598 // FIXME - no timeout 599 } 600 601 #ifndef CONFIG_SCSI_G_NCR5380_MEM 602 { 603 int i; 604 for (i = 0; i < 128; i++) 605 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 606 } 607 #else 608 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 609 isa_memcpy_fromio(dst + start, NCR53C400_host_buffer + NCR5380_map_name, 128); 610 #endif 611 start += 128; 612 blocks--; 613 } 614 615 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 616 printk("53C400r: no 53C80 gated irq after transfer"); 617 618 #if 0 619 /* 620 * DON'T DO THIS - THEY NEVER ARRIVE! 621 */ 622 printk("53C400r: Waiting for 53C80 registers\n"); 623 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) 624 ; 625 #endif 626 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) 627 printk(KERN_ERR "53C400r: no end dma signal\n"); 628 629 NCR5380_write(MODE_REG, MR_BASE); 630 NCR5380_read(RESET_PARITY_INTERRUPT_REG); 631 return 0; 632 } 633 634 /** 635 * NCR5380_write - pseudo DMA write 636 * @instance: adapter to read from 637 * @dst: buffer to read into 638 * @len: buffer length 639 * 640 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 641 * controller 642 */ 643 644 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) 645 { 646 int blocks = len / 128; 647 int start = 0; 648 int bl; 649 int i; 650 651 NCR5380_local_declare(); 652 NCR5380_setup(instance); 653 654 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); 655 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 656 while (1) { 657 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 658 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 659 return -1; 660 } 661 662 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 663 break; 664 } 665 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 666 ; // FIXME - timeout 667 #ifndef CONFIG_SCSI_G_NCR5380_MEM 668 { 669 for (i = 0; i < 128; i++) 670 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 671 } 672 #else 673 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 674 isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128); 675 #endif 676 start += 128; 677 blocks--; 678 } 679 if (blocks) { 680 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 681 ; // FIXME - no timeout 682 683 #ifndef CONFIG_SCSI_G_NCR5380_MEM 684 { 685 for (i = 0; i < 128; i++) 686 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 687 } 688 #else 689 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 690 isa_memcpy_toio(NCR53C400_host_buffer + NCR5380_map_name, src + start, 128); 691 #endif 692 start += 128; 693 blocks--; 694 } 695 696 #if 0 697 printk("53C400w: waiting for registers to be available\n"); 698 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); 699 printk("53C400w: Got em\n"); 700 #endif 701 702 /* Let's wait for this instead - could be ugly */ 703 /* All documentation says to check for this. Maybe my hardware is too 704 * fast. Waiting for it seems to work fine! KLL 705 */ 706 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 707 ; // FIXME - no timeout 708 709 /* 710 * I know. i is certainly != 0 here but the loop is new. See previous 711 * comment. 712 */ 713 if (i) { 714 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) 715 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); 716 } else 717 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); 718 719 #if 0 720 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { 721 printk(KERN_ERR "53C400w: no end dma signal\n"); 722 } 723 #endif 724 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) 725 ; // TIMEOUT 726 return 0; 727 } 728 #endif /* PSEUDO_DMA */ 729 730 /* 731 * Include the NCR5380 core code that we build our driver around 732 */ 733 734 #include "NCR5380.c" 735 736 #define PRINTP(x) len += sprintf(buffer+len, x) 737 #define ANDP , 738 739 static int sprint_opcode(char *buffer, int len, int opcode) 740 { 741 int start = len; 742 PRINTP("0x%02x " ANDP opcode); 743 return len - start; 744 } 745 746 static int sprint_command(char *buffer, int len, unsigned char *command) 747 { 748 int i, s, start = len; 749 len += sprint_opcode(buffer, len, command[0]); 750 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) 751 PRINTP("%02x " ANDP command[i]); 752 PRINTP("\n"); 753 return len - start; 754 } 755 756 /** 757 * sprintf_Scsi_Cmnd - print a scsi command 758 * @buffer: buffr to print into 759 * @len: buffer length 760 * @cmd: SCSI command block 761 * 762 * Print out the target and command data in hex 763 */ 764 765 static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd) 766 { 767 int start = len; 768 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); 769 PRINTP(" command = "); 770 len += sprint_command(buffer, len, cmd->cmnd); 771 return len - start; 772 } 773 774 /** 775 * generic_NCR5380_proc_info - /proc for NCR5380 driver 776 * @buffer: buffer to print into 777 * @start: start position 778 * @offset: offset into buffer 779 * @len: length 780 * @hostno: instance to affect 781 * @inout: read/write 782 * 783 * Provide the procfs information for the 5380 controller. We fill 784 * this with useful debugging information including the commands 785 * being executed, disconnected command queue and the statistical 786 * data 787 * 788 * Locks: global cli/lock for queue walk 789 */ 790 791 static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout) 792 { 793 int len = 0; 794 NCR5380_local_declare(); 795 unsigned long flags; 796 unsigned char status; 797 int i; 798 Scsi_Cmnd *ptr; 799 struct NCR5380_hostdata *hostdata; 800 #ifdef NCR5380_STATS 801 struct scsi_device *dev; 802 extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE]; 803 #endif 804 805 NCR5380_setup(scsi_ptr); 806 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 807 808 spin_lock_irqsave(scsi_ptr->host_lock, flags); 809 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 810 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 811 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 812 #ifdef NCR53C400 813 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 814 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 815 # if NCR53C400_PSEUDO_DMA 816 PRINTP("NCR53C400 pseudo DMA used\n"); 817 # endif 818 #else 819 PRINTP("NO NCR53C400 driver extensions\n"); 820 #endif 821 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 822 if (scsi_ptr->irq == SCSI_IRQ_NONE) 823 PRINTP("no interrupt\n"); 824 else 825 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 826 827 #ifdef NCR5380_STATS 828 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 829 PRINTP("There are commands pending, transfer rates may be crud\n"); 830 if (hostdata->pendingr) 831 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 832 if (hostdata->pendingw) 833 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 834 if (hostdata->pendingr || hostdata->pendingw) 835 PRINTP("\n"); 836 shost_for_each_device(dev, scsi_ptr) { 837 unsigned long br = hostdata->bytes_read[dev->id]; 838 unsigned long bw = hostdata->bytes_write[dev->id]; 839 long tr = hostdata->time_read[dev->id] / HZ; 840 long tw = hostdata->time_write[dev->id] / HZ; 841 842 PRINTP(" T:%d %s " ANDP dev->id ANDP(dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int) dev->type] : "Unknown"); 843 for (i = 0; i < 8; i++) 844 if (dev->vendor[i] >= 0x20) 845 *(buffer + (len++)) = dev->vendor[i]; 846 *(buffer + (len++)) = ' '; 847 for (i = 0; i < 16; i++) 848 if (dev->model[i] >= 0x20) 849 *(buffer + (len++)) = dev->model[i]; 850 *(buffer + (len++)) = ' '; 851 for (i = 0; i < 4; i++) 852 if (dev->rev[i] >= 0x20) 853 *(buffer + (len++)) = dev->rev[i]; 854 *(buffer + (len++)) = ' '; 855 856 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 857 if (tr) 858 PRINTP(" @ %5ld bps" ANDP br / tr); 859 860 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 861 if (tw) 862 PRINTP(" @ %5ld bps" ANDP bw / tw); 863 PRINTP("\n"); 864 } 865 #endif 866 867 status = NCR5380_read(STATUS_REG); 868 if (!(status & SR_REQ)) 869 PRINTP("REQ not asserted, phase unknown.\n"); 870 else { 871 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 872 PRINTP("Phase %s\n" ANDP phases[i].name); 873 } 874 875 if (!hostdata->connected) { 876 PRINTP("No currently connected command\n"); 877 } else { 878 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected); 879 } 880 881 PRINTP("issue_queue\n"); 882 883 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 884 len += sprint_Scsi_Cmnd(buffer, len, ptr); 885 886 PRINTP("disconnected_queue\n"); 887 888 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 889 len += sprint_Scsi_Cmnd(buffer, len, ptr); 890 891 *start = buffer + offset; 892 len -= offset; 893 if (len > length) 894 len = length; 895 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 896 return len; 897 } 898 899 #undef PRINTP 900 #undef ANDP 901 902 static struct scsi_host_template driver_template = { 903 .proc_info = generic_NCR5380_proc_info, 904 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 905 .detect = generic_NCR5380_detect, 906 .release = generic_NCR5380_release_resources, 907 .info = generic_NCR5380_info, 908 .queuecommand = generic_NCR5380_queue_command, 909 .eh_abort_handler = generic_NCR5380_abort, 910 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 911 .bios_param = NCR5380_BIOSPARAM, 912 .can_queue = CAN_QUEUE, 913 .this_id = 7, 914 .sg_tablesize = SG_ALL, 915 .cmd_per_lun = CMD_PER_LUN, 916 .use_clustering = DISABLE_CLUSTERING, 917 }; 918 #include <linux/module.h> 919 #include "scsi_module.c" 920 921 module_param(ncr_irq, int, 0); 922 module_param(ncr_dma, int, 0); 923 module_param(ncr_addr, int, 0); 924 module_param(ncr_5380, int, 0); 925 module_param(ncr_53c400, int, 0); 926 module_param(ncr_53c400a, int, 0); 927 module_param(dtc_3181e, int, 0); 928 MODULE_LICENSE("GPL"); 929 930 931 static struct isapnp_device_id id_table[] __devinitdata = { 932 { 933 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 934 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 935 0}, 936 {0} 937 }; 938 939 MODULE_DEVICE_TABLE(isapnp, id_table); 940 941 942 __setup("ncr5380=", do_NCR5380_setup); 943 __setup("ncr53c400=", do_NCR53C400_setup); 944 __setup("ncr53c400a=", do_NCR53C400A_setup); 945 __setup("dtc3181e=", do_DTC3181E_setup); 946