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 95#ifdef CONFIG_SCSI_GENERIC_NCR53C400 96#define NCR53C400_PSEUDO_DMA 1 97#define PSEUDO_DMA 98#define NCR53C400 99#define NCR5380_STATS 100#undef NCR5380_STAT_LIMIT 101#endif 102 103#include <asm/system.h> 104#include <asm/io.h> 105#include <linux/signal.h> 106#include <linux/blkdev.h> 107#include "scsi.h" 108#include <scsi/scsi_host.h> 109#include "g_NCR5380.h" 110#include "NCR5380.h" 111#include <linux/stat.h> 112#include <linux/init.h> 113#include <linux/ioport.h> 114#include <linux/isapnp.h> 115#include <linux/delay.h> 116#include <linux/interrupt.h> 117 118#define NCR_NOT_SET 0 119static int ncr_irq = NCR_NOT_SET; 120static int ncr_dma = NCR_NOT_SET; 121static int ncr_addr = NCR_NOT_SET; 122static int ncr_5380 = NCR_NOT_SET; 123static int ncr_53c400 = NCR_NOT_SET; 124static int ncr_53c400a = NCR_NOT_SET; 125static int dtc_3181e = NCR_NOT_SET; 126 127static struct override { 128 NCR5380_map_type NCR5380_map_name; 129 int irq; 130 int dma; 131 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ 132} overrides 133#ifdef GENERIC_NCR5380_OVERRIDE 134[] __initdata = GENERIC_NCR5380_OVERRIDE; 135#else 136[1] __initdata = { { 0,},}; 137#endif 138 139#define NO_OVERRIDES ARRAY_SIZE(overrides) 140 141#ifndef MODULE 142 143/** 144 * internal_setup - handle lilo command string override 145 * @board: BOARD_* identifier for the board 146 * @str: unused 147 * @ints: numeric parameters 148 * 149 * Do LILO command line initialization of the overrides array. Display 150 * errors when needed 151 * 152 * Locks: none 153 */ 154 155static void __init internal_setup(int board, char *str, int *ints) 156{ 157 static int commandline_current = 0; 158 switch (board) { 159 case BOARD_NCR5380: 160 if (ints[0] != 2 && ints[0] != 3) { 161 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); 162 return; 163 } 164 break; 165 case BOARD_NCR53C400: 166 if (ints[0] != 2) { 167 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); 168 return; 169 } 170 break; 171 case BOARD_NCR53C400A: 172 if (ints[0] != 2) { 173 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); 174 return; 175 } 176 break; 177 case BOARD_DTC3181E: 178 if (ints[0] != 2) { 179 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); 180 return; 181 } 182 break; 183 } 184 185 if (commandline_current < NO_OVERRIDES) { 186 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; 187 overrides[commandline_current].irq = ints[2]; 188 if (ints[0] == 3) 189 overrides[commandline_current].dma = ints[3]; 190 else 191 overrides[commandline_current].dma = DMA_NONE; 192 overrides[commandline_current].board = board; 193 ++commandline_current; 194 } 195} 196 197 198/** 199 * do_NCR53C80_setup - set up entry point 200 * @str: unused 201 * 202 * Setup function invoked at boot to parse the ncr5380= command 203 * line. 204 */ 205 206static int __init do_NCR5380_setup(char *str) 207{ 208 int ints[10]; 209 210 get_options(str, ARRAY_SIZE(ints), ints); 211 internal_setup(BOARD_NCR5380, str, ints); 212 return 1; 213} 214 215/** 216 * do_NCR53C400_setup - set up entry point 217 * @str: unused 218 * @ints: integer parameters from kernel setup code 219 * 220 * Setup function invoked at boot to parse the ncr53c400= command 221 * line. 222 */ 223 224static int __init do_NCR53C400_setup(char *str) 225{ 226 int ints[10]; 227 228 get_options(str, ARRAY_SIZE(ints), ints); 229 internal_setup(BOARD_NCR53C400, str, ints); 230 return 1; 231} 232 233/** 234 * do_NCR53C400A_setup - set up entry point 235 * @str: unused 236 * @ints: integer parameters from kernel setup code 237 * 238 * Setup function invoked at boot to parse the ncr53c400a= command 239 * line. 240 */ 241 242static int __init do_NCR53C400A_setup(char *str) 243{ 244 int ints[10]; 245 246 get_options(str, ARRAY_SIZE(ints), ints); 247 internal_setup(BOARD_NCR53C400A, str, ints); 248 return 1; 249} 250 251/** 252 * do_DTC3181E_setup - set up entry point 253 * @str: unused 254 * @ints: integer parameters from kernel setup code 255 * 256 * Setup function invoked at boot to parse the dtc3181e= command 257 * line. 258 */ 259 260static int __init do_DTC3181E_setup(char *str) 261{ 262 int ints[10]; 263 264 get_options(str, ARRAY_SIZE(ints), ints); 265 internal_setup(BOARD_DTC3181E, str, ints); 266 return 1; 267} 268 269#endif 270 271/** 272 * generic_NCR5380_detect - look for NCR5380 controllers 273 * @tpnt: the scsi template 274 * 275 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E 276 * and DTC436(ISAPnP) controllers. If overrides have been set we use 277 * them. 278 * 279 * The caller supplied NCR5380_init function is invoked from here, before 280 * the interrupt line is taken. 281 * 282 * Locks: none 283 */ 284 285int __init generic_NCR5380_detect(struct scsi_host_template * tpnt) 286{ 287 static int current_override = 0; 288 int count; 289 unsigned int *ports; 290#ifndef SCSI_G_NCR5380_MEM 291 int i; 292 unsigned long region_size = 16; 293#endif 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#ifdef SCSI_G_NCR5380_MEM 303 unsigned long base; 304 void __iomem *iomem; 305#endif 306 307 if (ncr_irq != NCR_NOT_SET) 308 overrides[0].irq = ncr_irq; 309 if (ncr_dma != NCR_NOT_SET) 310 overrides[0].dma = ncr_dma; 311 if (ncr_addr != NCR_NOT_SET) 312 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; 313 if (ncr_5380 != NCR_NOT_SET) 314 overrides[0].board = BOARD_NCR5380; 315 else if (ncr_53c400 != NCR_NOT_SET) 316 overrides[0].board = BOARD_NCR53C400; 317 else if (ncr_53c400a != NCR_NOT_SET) 318 overrides[0].board = BOARD_NCR53C400A; 319 else if (dtc_3181e != NCR_NOT_SET) 320 overrides[0].board = BOARD_DTC3181E; 321#ifndef SCSI_G_NCR5380_MEM 322 if (!current_override && isapnp_present()) { 323 struct pnp_dev *dev = NULL; 324 count = 0; 325 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { 326 if (count >= NO_OVERRIDES) 327 break; 328 if (pnp_device_attach(dev) < 0) 329 continue; 330 if (pnp_activate_dev(dev) < 0) { 331 printk(KERN_ERR "dtc436e probe: activate failed\n"); 332 pnp_device_detach(dev); 333 continue; 334 } 335 if (!pnp_port_valid(dev, 0)) { 336 printk(KERN_ERR "dtc436e probe: no valid port\n"); 337 pnp_device_detach(dev); 338 continue; 339 } 340 if (pnp_irq_valid(dev, 0)) 341 overrides[count].irq = pnp_irq(dev, 0); 342 else 343 overrides[count].irq = SCSI_IRQ_NONE; 344 if (pnp_dma_valid(dev, 0)) 345 overrides[count].dma = pnp_dma(dev, 0); 346 else 347 overrides[count].dma = DMA_NONE; 348 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); 349 overrides[count].board = BOARD_DTC3181E; 350 count++; 351 } 352 } 353#endif 354 tpnt->proc_name = "g_NCR5380"; 355 356 for (count = 0; current_override < NO_OVERRIDES; ++current_override) { 357 if (!(overrides[current_override].NCR5380_map_name)) 358 continue; 359 360 ports = NULL; 361 switch (overrides[current_override].board) { 362 case BOARD_NCR5380: 363 flags = FLAG_NO_PSEUDO_DMA; 364 break; 365 case BOARD_NCR53C400: 366 flags = FLAG_NCR53C400; 367 break; 368 case BOARD_NCR53C400A: 369 flags = FLAG_NO_PSEUDO_DMA; 370 ports = ncr_53c400a_ports; 371 break; 372 case BOARD_DTC3181E: 373 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E; 374 ports = dtc_3181e_ports; 375 break; 376 } 377 378#ifndef SCSI_G_NCR5380_MEM 379 if (ports) { 380 /* wakeup sequence for the NCR53C400A and DTC3181E */ 381 382 /* Disable the adapter and look for a free io port */ 383 outb(0x59, 0x779); 384 outb(0xb9, 0x379); 385 outb(0xc5, 0x379); 386 outb(0xae, 0x379); 387 outb(0xa6, 0x379); 388 outb(0x00, 0x379); 389 390 if (overrides[current_override].NCR5380_map_name != PORT_AUTO) 391 for (i = 0; ports[i]; i++) { 392 if (!request_region(ports[i], 16, "ncr53c80")) 393 continue; 394 if (overrides[current_override].NCR5380_map_name == ports[i]) 395 break; 396 release_region(ports[i], 16); 397 } else 398 for (i = 0; ports[i]; i++) { 399 if (!request_region(ports[i], 16, "ncr53c80")) 400 continue; 401 if (inb(ports[i]) == 0xff) 402 break; 403 release_region(ports[i], 16); 404 } 405 if (ports[i]) { 406 /* At this point we have our region reserved */ 407 outb(0x59, 0x779); 408 outb(0xb9, 0x379); 409 outb(0xc5, 0x379); 410 outb(0xae, 0x379); 411 outb(0xa6, 0x379); 412 outb(0x80 | i, 0x379); /* set io port to be used */ 413 outb(0xc0, ports[i] + 9); 414 if (inb(ports[i] + 9) != 0x80) 415 continue; 416 else 417 overrides[current_override].NCR5380_map_name = ports[i]; 418 } else 419 continue; 420 } 421 else 422 { 423 /* Not a 53C400A style setup - just grab */ 424 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) 425 continue; 426 region_size = NCR5380_region_size; 427 } 428#else 429 base = overrides[current_override].NCR5380_map_name; 430 if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) 431 continue; 432 iomem = ioremap(base, NCR5380_region_size); 433 if (!iomem) { 434 release_mem_region(base, NCR5380_region_size); 435 continue; 436 } 437#endif 438 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); 439 if (instance == NULL) { 440#ifndef SCSI_G_NCR5380_MEM 441 release_region(overrides[current_override].NCR5380_map_name, region_size); 442#else 443 iounmap(iomem); 444 release_mem_region(base, NCR5380_region_size); 445#endif 446 continue; 447 } 448 449 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name; 450#ifndef SCSI_G_NCR5380_MEM 451 instance->n_io_port = region_size; 452#else 453 ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem; 454#endif 455 456 NCR5380_init(instance, flags); 457 458 if (overrides[current_override].irq != IRQ_AUTO) 459 instance->irq = overrides[current_override].irq; 460 else 461 instance->irq = NCR5380_probe_irq(instance, 0xffff); 462 463 if (instance->irq != SCSI_IRQ_NONE) 464 if (request_irq(instance->irq, generic_NCR5380_intr, 465 IRQF_DISABLED, "NCR5380", instance)) { 466 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); 467 instance->irq = SCSI_IRQ_NONE; 468 } 469 470 if (instance->irq == SCSI_IRQ_NONE) { 471 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); 472 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); 473 } 474 475 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name); 476 if (instance->irq == SCSI_IRQ_NONE) 477 printk(" interrupts disabled"); 478 else 479 printk(" irq %d", instance->irq); 480 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE); 481 NCR5380_print_options(instance); 482 printk("\n"); 483 484 ++current_override; 485 ++count; 486 } 487 return count; 488} 489 490/** 491 * generic_NCR5380_info - reporting string 492 * @host: NCR5380 to report on 493 * 494 * Report driver information for the NCR5380 495 */ 496 497const char *generic_NCR5380_info(struct Scsi_Host *host) 498{ 499 static const char string[] = "Generic NCR5380/53C400 Driver"; 500 return string; 501} 502 503/** 504 * generic_NCR5380_release_resources - free resources 505 * @instance: host adapter to clean up 506 * 507 * Free the generic interface resources from this adapter. 508 * 509 * Locks: none 510 */ 511 512int generic_NCR5380_release_resources(struct Scsi_Host *instance) 513{ 514 NCR5380_local_declare(); 515 NCR5380_setup(instance); 516 517 if (instance->irq != SCSI_IRQ_NONE) 518 free_irq(instance->irq, instance); 519 NCR5380_exit(instance); 520 521#ifndef SCSI_G_NCR5380_MEM 522 release_region(instance->NCR5380_instance_name, instance->n_io_port); 523#else 524 iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem); 525 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size); 526#endif 527 528 529 return 0; 530} 531 532#ifdef BIOSPARAM 533 534static int 535generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, 536 sector_t capacity, int *ip) 537{ 538 ip[0] = 64; 539 ip[1] = 32; 540 ip[2] = capacity >> 11; 541 return 0; 542} 543#endif 544 545#ifdef NCR53C400_PSEUDO_DMA 546 547/** 548 * NCR5380_pread - pseudo DMA read 549 * @instance: adapter to read from 550 * @dst: buffer to read into 551 * @len: buffer length 552 * 553 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 554 * controller 555 */ 556 557static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) 558{ 559 int blocks = len / 128; 560 int start = 0; 561 int bl; 562 563 NCR5380_local_declare(); 564 NCR5380_setup(instance); 565 566 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); 567 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 568 while (1) { 569 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 570 break; 571 } 572 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 573 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 574 return -1; 575 } 576 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); 577 578#ifndef SCSI_G_NCR5380_MEM 579 { 580 int i; 581 for (i = 0; i < 128; i++) 582 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 583 } 584#else 585 /* implies SCSI_G_NCR5380_MEM */ 586 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 587#endif 588 start += 128; 589 blocks--; 590 } 591 592 if (blocks) { 593 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 594 { 595 } 596 597#ifndef SCSI_G_NCR5380_MEM 598 { 599 int i; 600 for (i = 0; i < 128; i++) 601 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 602 } 603#else 604 /* implies SCSI_G_NCR5380_MEM */ 605 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 606#endif 607 start += 128; 608 blocks--; 609 } 610 611 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 612 printk("53C400r: no 53C80 gated irq after transfer"); 613 614 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) 615 printk(KERN_ERR "53C400r: no end dma signal\n"); 616 617 NCR5380_write(MODE_REG, MR_BASE); 618 NCR5380_read(RESET_PARITY_INTERRUPT_REG); 619 return 0; 620} 621 622/** 623 * NCR5380_write - pseudo DMA write 624 * @instance: adapter to read from 625 * @dst: buffer to read into 626 * @len: buffer length 627 * 628 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 629 * controller 630 */ 631 632static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) 633{ 634 int blocks = len / 128; 635 int start = 0; 636 int bl; 637 int i; 638 639 NCR5380_local_declare(); 640 NCR5380_setup(instance); 641 642 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); 643 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 644 while (1) { 645 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 646 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 647 return -1; 648 } 649 650 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 651 break; 652 } 653 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 654 ; 655#ifndef SCSI_G_NCR5380_MEM 656 { 657 for (i = 0; i < 128; i++) 658 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 659 } 660#else 661 /* implies SCSI_G_NCR5380_MEM */ 662 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 663#endif 664 start += 128; 665 blocks--; 666 } 667 if (blocks) { 668 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 669 ; 670 671#ifndef SCSI_G_NCR5380_MEM 672 { 673 for (i = 0; i < 128; i++) 674 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 675 } 676#else 677 /* implies SCSI_G_NCR5380_MEM */ 678 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 679#endif 680 start += 128; 681 blocks--; 682 } 683 684 685 /* Let's wait for this instead - could be ugly */ 686 /* All documentation says to check for this. Maybe my hardware is too 687 * fast. Waiting for it seems to work fine! KLL 688 */ 689 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 690 ; 691 692 /* 693 * I know. i is certainly != 0 here but the loop is new. See previous 694 * comment. 695 */ 696 if (i) { 697 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) 698 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); 699 } else 700 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); 701 702 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) 703 ; // TIMEOUT 704 return 0; 705} 706#endif /* PSEUDO_DMA */ 707 708/* 709 * Include the NCR5380 core code that we build our driver around 710 */ 711 712#include "NCR5380.c" 713 714#define PRINTP(x) len += sprintf(buffer+len, x) 715#define ANDP , 716 717static int sprint_opcode(char *buffer, int len, int opcode) 718{ 719 int start = len; 720 PRINTP("0x%02x " ANDP opcode); 721 return len - start; 722} 723 724static int sprint_command(char *buffer, int len, unsigned char *command) 725{ 726 int i, s, start = len; 727 len += sprint_opcode(buffer, len, command[0]); 728 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) 729 PRINTP("%02x " ANDP command[i]); 730 PRINTP("\n"); 731 return len - start; 732} 733 734/** 735 * sprintf_Scsi_Cmnd - print a scsi command 736 * @buffer: buffr to print into 737 * @len: buffer length 738 * @cmd: SCSI command block 739 * 740 * Print out the target and command data in hex 741 */ 742 743static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd) 744{ 745 int start = len; 746 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); 747 PRINTP(" command = "); 748 len += sprint_command(buffer, len, cmd->cmnd); 749 return len - start; 750} 751 752/** 753 * generic_NCR5380_proc_info - /proc for NCR5380 driver 754 * @buffer: buffer to print into 755 * @start: start position 756 * @offset: offset into buffer 757 * @len: length 758 * @hostno: instance to affect 759 * @inout: read/write 760 * 761 * Provide the procfs information for the 5380 controller. We fill 762 * this with useful debugging information including the commands 763 * being executed, disconnected command queue and the statistical 764 * data 765 * 766 * Locks: global cli/lock for queue walk 767 */ 768 769static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout) 770{ 771 int len = 0; 772 NCR5380_local_declare(); 773 unsigned long flags; 774 unsigned char status; 775 int i; 776 Scsi_Cmnd *ptr; 777 struct NCR5380_hostdata *hostdata; 778#ifdef NCR5380_STATS 779 struct scsi_device *dev; 780#endif 781 782 NCR5380_setup(scsi_ptr); 783 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 784 785 spin_lock_irqsave(scsi_ptr->host_lock, flags); 786 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 787 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 788 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 789#ifdef NCR53C400 790 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 791 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 792# if NCR53C400_PSEUDO_DMA 793 PRINTP("NCR53C400 pseudo DMA used\n"); 794# endif 795#else 796 PRINTP("NO NCR53C400 driver extensions\n"); 797#endif 798 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 799 if (scsi_ptr->irq == SCSI_IRQ_NONE) 800 PRINTP("no interrupt\n"); 801 else 802 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 803 804#ifdef NCR5380_STATS 805 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 806 PRINTP("There are commands pending, transfer rates may be crud\n"); 807 if (hostdata->pendingr) 808 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 809 if (hostdata->pendingw) 810 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 811 if (hostdata->pendingr || hostdata->pendingw) 812 PRINTP("\n"); 813 shost_for_each_device(dev, scsi_ptr) { 814 unsigned long br = hostdata->bytes_read[dev->id]; 815 unsigned long bw = hostdata->bytes_write[dev->id]; 816 long tr = hostdata->time_read[dev->id] / HZ; 817 long tw = hostdata->time_write[dev->id] / HZ; 818 819 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type)); 820 for (i = 0; i < 8; i++) 821 if (dev->vendor[i] >= 0x20) 822 *(buffer + (len++)) = dev->vendor[i]; 823 *(buffer + (len++)) = ' '; 824 for (i = 0; i < 16; i++) 825 if (dev->model[i] >= 0x20) 826 *(buffer + (len++)) = dev->model[i]; 827 *(buffer + (len++)) = ' '; 828 for (i = 0; i < 4; i++) 829 if (dev->rev[i] >= 0x20) 830 *(buffer + (len++)) = dev->rev[i]; 831 *(buffer + (len++)) = ' '; 832 833 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 834 if (tr) 835 PRINTP(" @ %5ld bps" ANDP br / tr); 836 837 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 838 if (tw) 839 PRINTP(" @ %5ld bps" ANDP bw / tw); 840 PRINTP("\n"); 841 } 842#endif 843 844 status = NCR5380_read(STATUS_REG); 845 if (!(status & SR_REQ)) 846 PRINTP("REQ not asserted, phase unknown.\n"); 847 else { 848 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 849 PRINTP("Phase %s\n" ANDP phases[i].name); 850 } 851 852 if (!hostdata->connected) { 853 PRINTP("No currently connected command\n"); 854 } else { 855 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected); 856 } 857 858 PRINTP("issue_queue\n"); 859 860 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 861 len += sprint_Scsi_Cmnd(buffer, len, ptr); 862 863 PRINTP("disconnected_queue\n"); 864 865 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 866 len += sprint_Scsi_Cmnd(buffer, len, ptr); 867 868 *start = buffer + offset; 869 len -= offset; 870 if (len > length) 871 len = length; 872 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 873 return len; 874} 875 876#undef PRINTP 877#undef ANDP 878 879static struct scsi_host_template driver_template = { 880 .proc_info = generic_NCR5380_proc_info, 881 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 882 .detect = generic_NCR5380_detect, 883 .release = generic_NCR5380_release_resources, 884 .info = generic_NCR5380_info, 885 .queuecommand = generic_NCR5380_queue_command, 886 .eh_abort_handler = generic_NCR5380_abort, 887 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 888 .bios_param = NCR5380_BIOSPARAM, 889 .can_queue = CAN_QUEUE, 890 .this_id = 7, 891 .sg_tablesize = SG_ALL, 892 .cmd_per_lun = CMD_PER_LUN, 893 .use_clustering = DISABLE_CLUSTERING, 894}; 895#include <linux/module.h> 896#include "scsi_module.c" 897 898module_param(ncr_irq, int, 0); 899module_param(ncr_dma, int, 0); 900module_param(ncr_addr, int, 0); 901module_param(ncr_5380, int, 0); 902module_param(ncr_53c400, int, 0); 903module_param(ncr_53c400a, int, 0); 904module_param(dtc_3181e, int, 0); 905MODULE_LICENSE("GPL"); 906 907#ifndef SCSI_G_NCR5380_MEM 908static struct isapnp_device_id id_table[] __devinitdata = { 909 { 910 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 911 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 912 0}, 913 {0} 914}; 915 916MODULE_DEVICE_TABLE(isapnp, id_table); 917#endif 918 919__setup("ncr5380=", do_NCR5380_setup); 920__setup("ncr53c400=", do_NCR53C400_setup); 921__setup("ncr53c400a=", do_NCR53C400A_setup); 922__setup("dtc3181e=", do_DTC3181E_setup); 923