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/io.h> 104#include <linux/signal.h> 105#include <linux/blkdev.h> 106#include "scsi.h" 107#include <scsi/scsi_host.h> 108#include "g_NCR5380.h" 109#include "NCR5380.h" 110#include <linux/stat.h> 111#include <linux/init.h> 112#include <linux/ioport.h> 113#include <linux/isapnp.h> 114#include <linux/delay.h> 115#include <linux/interrupt.h> 116 117#define NCR_NOT_SET 0 118static int ncr_irq = NCR_NOT_SET; 119static int ncr_dma = NCR_NOT_SET; 120static int ncr_addr = NCR_NOT_SET; 121static int ncr_5380 = NCR_NOT_SET; 122static int ncr_53c400 = NCR_NOT_SET; 123static int ncr_53c400a = NCR_NOT_SET; 124static int dtc_3181e = NCR_NOT_SET; 125 126static struct override { 127 NCR5380_map_type NCR5380_map_name; 128 int irq; 129 int dma; 130 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ 131} overrides 132#ifdef GENERIC_NCR5380_OVERRIDE 133[] __initdata = GENERIC_NCR5380_OVERRIDE; 134#else 135[1] __initdata = { { 0,},}; 136#endif 137 138#define NO_OVERRIDES ARRAY_SIZE(overrides) 139 140#ifndef MODULE 141 142/** 143 * internal_setup - handle lilo command string override 144 * @board: BOARD_* identifier for the board 145 * @str: unused 146 * @ints: numeric parameters 147 * 148 * Do LILO command line initialization of the overrides array. Display 149 * errors when needed 150 * 151 * Locks: none 152 */ 153 154static void __init internal_setup(int board, char *str, int *ints) 155{ 156 static int commandline_current = 0; 157 switch (board) { 158 case BOARD_NCR5380: 159 if (ints[0] != 2 && ints[0] != 3) { 160 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); 161 return; 162 } 163 break; 164 case BOARD_NCR53C400: 165 if (ints[0] != 2) { 166 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); 167 return; 168 } 169 break; 170 case BOARD_NCR53C400A: 171 if (ints[0] != 2) { 172 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); 173 return; 174 } 175 break; 176 case BOARD_DTC3181E: 177 if (ints[0] != 2) { 178 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); 179 return; 180 } 181 break; 182 } 183 184 if (commandline_current < NO_OVERRIDES) { 185 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; 186 overrides[commandline_current].irq = ints[2]; 187 if (ints[0] == 3) 188 overrides[commandline_current].dma = ints[3]; 189 else 190 overrides[commandline_current].dma = DMA_NONE; 191 overrides[commandline_current].board = board; 192 ++commandline_current; 193 } 194} 195 196 197/** 198 * do_NCR53C80_setup - set up entry point 199 * @str: unused 200 * 201 * Setup function invoked at boot to parse the ncr5380= command 202 * line. 203 */ 204 205static int __init do_NCR5380_setup(char *str) 206{ 207 int ints[10]; 208 209 get_options(str, ARRAY_SIZE(ints), ints); 210 internal_setup(BOARD_NCR5380, str, ints); 211 return 1; 212} 213 214/** 215 * do_NCR53C400_setup - set up entry point 216 * @str: unused 217 * @ints: integer parameters from kernel setup code 218 * 219 * Setup function invoked at boot to parse the ncr53c400= command 220 * line. 221 */ 222 223static int __init do_NCR53C400_setup(char *str) 224{ 225 int ints[10]; 226 227 get_options(str, ARRAY_SIZE(ints), ints); 228 internal_setup(BOARD_NCR53C400, str, ints); 229 return 1; 230} 231 232/** 233 * do_NCR53C400A_setup - set up entry point 234 * @str: unused 235 * @ints: integer parameters from kernel setup code 236 * 237 * Setup function invoked at boot to parse the ncr53c400a= command 238 * line. 239 */ 240 241static int __init do_NCR53C400A_setup(char *str) 242{ 243 int ints[10]; 244 245 get_options(str, ARRAY_SIZE(ints), ints); 246 internal_setup(BOARD_NCR53C400A, str, ints); 247 return 1; 248} 249 250/** 251 * do_DTC3181E_setup - set up entry point 252 * @str: unused 253 * @ints: integer parameters from kernel setup code 254 * 255 * Setup function invoked at boot to parse the dtc3181e= command 256 * line. 257 */ 258 259static int __init do_DTC3181E_setup(char *str) 260{ 261 int ints[10]; 262 263 get_options(str, ARRAY_SIZE(ints), ints); 264 internal_setup(BOARD_DTC3181E, str, ints); 265 return 1; 266} 267 268#endif 269 270/** 271 * generic_NCR5380_detect - look for NCR5380 controllers 272 * @tpnt: the scsi template 273 * 274 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E 275 * and DTC436(ISAPnP) controllers. If overrides have been set we use 276 * them. 277 * 278 * The caller supplied NCR5380_init function is invoked from here, before 279 * the interrupt line is taken. 280 * 281 * Locks: none 282 */ 283 284int __init generic_NCR5380_detect(struct scsi_host_template * tpnt) 285{ 286 static int current_override = 0; 287 int count; 288 unsigned int *ports; 289#ifndef SCSI_G_NCR5380_MEM 290 int i; 291 unsigned long region_size = 16; 292#endif 293 static unsigned int __initdata ncr_53c400a_ports[] = { 294 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 295 }; 296 static unsigned int __initdata dtc_3181e_ports[] = { 297 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 298 }; 299 int flags = 0; 300 struct Scsi_Host *instance; 301#ifdef SCSI_G_NCR5380_MEM 302 unsigned long base; 303 void __iomem *iomem; 304#endif 305 306 if (ncr_irq != NCR_NOT_SET) 307 overrides[0].irq = ncr_irq; 308 if (ncr_dma != NCR_NOT_SET) 309 overrides[0].dma = ncr_dma; 310 if (ncr_addr != NCR_NOT_SET) 311 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; 312 if (ncr_5380 != NCR_NOT_SET) 313 overrides[0].board = BOARD_NCR5380; 314 else if (ncr_53c400 != NCR_NOT_SET) 315 overrides[0].board = BOARD_NCR53C400; 316 else if (ncr_53c400a != NCR_NOT_SET) 317 overrides[0].board = BOARD_NCR53C400A; 318 else if (dtc_3181e != NCR_NOT_SET) 319 overrides[0].board = BOARD_DTC3181E; 320#ifndef SCSI_G_NCR5380_MEM 321 if (!current_override && isapnp_present()) { 322 struct pnp_dev *dev = NULL; 323 count = 0; 324 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { 325 if (count >= NO_OVERRIDES) 326 break; 327 if (pnp_device_attach(dev) < 0) 328 continue; 329 if (pnp_activate_dev(dev) < 0) { 330 printk(KERN_ERR "dtc436e probe: activate failed\n"); 331 pnp_device_detach(dev); 332 continue; 333 } 334 if (!pnp_port_valid(dev, 0)) { 335 printk(KERN_ERR "dtc436e probe: no valid port\n"); 336 pnp_device_detach(dev); 337 continue; 338 } 339 if (pnp_irq_valid(dev, 0)) 340 overrides[count].irq = pnp_irq(dev, 0); 341 else 342 overrides[count].irq = SCSI_IRQ_NONE; 343 if (pnp_dma_valid(dev, 0)) 344 overrides[count].dma = pnp_dma(dev, 0); 345 else 346 overrides[count].dma = DMA_NONE; 347 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); 348 overrides[count].board = BOARD_DTC3181E; 349 count++; 350 } 351 } 352#endif 353 tpnt->proc_name = "g_NCR5380"; 354 355 for (count = 0; current_override < NO_OVERRIDES; ++current_override) { 356 if (!(overrides[current_override].NCR5380_map_name)) 357 continue; 358 359 ports = NULL; 360 switch (overrides[current_override].board) { 361 case BOARD_NCR5380: 362 flags = FLAG_NO_PSEUDO_DMA; 363 break; 364 case BOARD_NCR53C400: 365 flags = FLAG_NCR53C400; 366 break; 367 case BOARD_NCR53C400A: 368 flags = FLAG_NO_PSEUDO_DMA; 369 ports = ncr_53c400a_ports; 370 break; 371 case BOARD_DTC3181E: 372 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E; 373 ports = dtc_3181e_ports; 374 break; 375 } 376 377#ifndef SCSI_G_NCR5380_MEM 378 if (ports) { 379 /* wakeup sequence for the NCR53C400A and DTC3181E */ 380 381 /* Disable the adapter and look for a free io port */ 382 outb(0x59, 0x779); 383 outb(0xb9, 0x379); 384 outb(0xc5, 0x379); 385 outb(0xae, 0x379); 386 outb(0xa6, 0x379); 387 outb(0x00, 0x379); 388 389 if (overrides[current_override].NCR5380_map_name != PORT_AUTO) 390 for (i = 0; ports[i]; i++) { 391 if (!request_region(ports[i], 16, "ncr53c80")) 392 continue; 393 if (overrides[current_override].NCR5380_map_name == ports[i]) 394 break; 395 release_region(ports[i], 16); 396 } else 397 for (i = 0; ports[i]; i++) { 398 if (!request_region(ports[i], 16, "ncr53c80")) 399 continue; 400 if (inb(ports[i]) == 0xff) 401 break; 402 release_region(ports[i], 16); 403 } 404 if (ports[i]) { 405 /* At this point we have our region reserved */ 406 outb(0x59, 0x779); 407 outb(0xb9, 0x379); 408 outb(0xc5, 0x379); 409 outb(0xae, 0x379); 410 outb(0xa6, 0x379); 411 outb(0x80 | i, 0x379); /* set io port to be used */ 412 outb(0xc0, ports[i] + 9); 413 if (inb(ports[i] + 9) != 0x80) 414 continue; 415 else 416 overrides[current_override].NCR5380_map_name = ports[i]; 417 } else 418 continue; 419 } 420 else 421 { 422 /* Not a 53C400A style setup - just grab */ 423 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) 424 continue; 425 region_size = NCR5380_region_size; 426 } 427#else 428 base = overrides[current_override].NCR5380_map_name; 429 if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) 430 continue; 431 iomem = ioremap(base, NCR5380_region_size); 432 if (!iomem) { 433 release_mem_region(base, NCR5380_region_size); 434 continue; 435 } 436#endif 437 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); 438 if (instance == NULL) { 439#ifndef SCSI_G_NCR5380_MEM 440 release_region(overrides[current_override].NCR5380_map_name, region_size); 441#else 442 iounmap(iomem); 443 release_mem_region(base, NCR5380_region_size); 444#endif 445 continue; 446 } 447 448 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name; 449#ifndef SCSI_G_NCR5380_MEM 450 instance->n_io_port = region_size; 451#else 452 ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem; 453#endif 454 455 NCR5380_init(instance, flags); 456 457 if (overrides[current_override].irq != IRQ_AUTO) 458 instance->irq = overrides[current_override].irq; 459 else 460 instance->irq = NCR5380_probe_irq(instance, 0xffff); 461 462 if (instance->irq != SCSI_IRQ_NONE) 463 if (request_irq(instance->irq, generic_NCR5380_intr, 464 IRQF_DISABLED, "NCR5380", instance)) { 465 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); 466 instance->irq = SCSI_IRQ_NONE; 467 } 468 469 if (instance->irq == SCSI_IRQ_NONE) { 470 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); 471 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); 472 } 473 474 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name); 475 if (instance->irq == SCSI_IRQ_NONE) 476 printk(" interrupts disabled"); 477 else 478 printk(" irq %d", instance->irq); 479 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE); 480 NCR5380_print_options(instance); 481 printk("\n"); 482 483 ++current_override; 484 ++count; 485 } 486 return count; 487} 488 489/** 490 * generic_NCR5380_info - reporting string 491 * @host: NCR5380 to report on 492 * 493 * Report driver information for the NCR5380 494 */ 495 496const char *generic_NCR5380_info(struct Scsi_Host *host) 497{ 498 static const char string[] = "Generic NCR5380/53C400 Driver"; 499 return string; 500} 501 502/** 503 * generic_NCR5380_release_resources - free resources 504 * @instance: host adapter to clean up 505 * 506 * Free the generic interface resources from this adapter. 507 * 508 * Locks: none 509 */ 510 511int generic_NCR5380_release_resources(struct Scsi_Host *instance) 512{ 513 NCR5380_local_declare(); 514 NCR5380_setup(instance); 515 516 if (instance->irq != SCSI_IRQ_NONE) 517 free_irq(instance->irq, instance); 518 NCR5380_exit(instance); 519 520#ifndef SCSI_G_NCR5380_MEM 521 release_region(instance->NCR5380_instance_name, instance->n_io_port); 522#else 523 iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem); 524 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size); 525#endif 526 527 528 return 0; 529} 530 531#ifdef BIOSPARAM 532/** 533 * generic_NCR5380_biosparam 534 * @disk: disk to compute geometry for 535 * @dev: device identifier for this disk 536 * @ip: sizes to fill in 537 * 538 * Generates a BIOS / DOS compatible H-C-S mapping for the specified 539 * device / size. 540 * 541 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone 542 * using hard disks on a trantor should verify that this mapping 543 * corresponds to that used by the BIOS / ASPI driver by running the linux 544 * fdisk program and matching the H_C_S coordinates to what DOS uses. 545 * 546 * Locks: none 547 */ 548 549static int 550generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, 551 sector_t capacity, int *ip) 552{ 553 ip[0] = 64; 554 ip[1] = 32; 555 ip[2] = capacity >> 11; 556 return 0; 557} 558#endif 559 560#ifdef NCR53C400_PSEUDO_DMA 561 562/** 563 * NCR5380_pread - pseudo DMA read 564 * @instance: adapter to read from 565 * @dst: buffer to read into 566 * @len: buffer length 567 * 568 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent 569 * controller 570 */ 571 572static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) 573{ 574 int blocks = len / 128; 575 int start = 0; 576 int bl; 577 578 NCR5380_local_declare(); 579 NCR5380_setup(instance); 580 581 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); 582 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 583 while (1) { 584 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 585 break; 586 } 587 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 588 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 589 return -1; 590 } 591 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); 592 593#ifndef SCSI_G_NCR5380_MEM 594 { 595 int i; 596 for (i = 0; i < 128; i++) 597 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 598 } 599#else 600 /* implies SCSI_G_NCR5380_MEM */ 601 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 602#endif 603 start += 128; 604 blocks--; 605 } 606 607 if (blocks) { 608 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 609 { 610 // FIXME - no timeout 611 } 612 613#ifndef SCSI_G_NCR5380_MEM 614 { 615 int i; 616 for (i = 0; i < 128; i++) 617 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 618 } 619#else 620 /* implies SCSI_G_NCR5380_MEM */ 621 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 622#endif 623 start += 128; 624 blocks--; 625 } 626 627 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 628 printk("53C400r: no 53C80 gated irq after transfer"); 629 630#if 0 631 /* 632 * DON'T DO THIS - THEY NEVER ARRIVE! 633 */ 634 printk("53C400r: Waiting for 53C80 registers\n"); 635 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) 636 ; 637#endif 638 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) 639 printk(KERN_ERR "53C400r: no end dma signal\n"); 640 641 NCR5380_write(MODE_REG, MR_BASE); 642 NCR5380_read(RESET_PARITY_INTERRUPT_REG); 643 return 0; 644} 645 646/** 647 * NCR5380_write - pseudo DMA write 648 * @instance: adapter to read from 649 * @dst: buffer to read into 650 * @len: buffer length 651 * 652 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent 653 * controller 654 */ 655 656static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) 657{ 658 int blocks = len / 128; 659 int start = 0; 660 int bl; 661 int i; 662 663 NCR5380_local_declare(); 664 NCR5380_setup(instance); 665 666 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); 667 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 668 while (1) { 669 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 670 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 671 return -1; 672 } 673 674 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 675 break; 676 } 677 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 678 ; // FIXME - timeout 679#ifndef SCSI_G_NCR5380_MEM 680 { 681 for (i = 0; i < 128; i++) 682 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 683 } 684#else 685 /* implies SCSI_G_NCR5380_MEM */ 686 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 687#endif 688 start += 128; 689 blocks--; 690 } 691 if (blocks) { 692 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 693 ; // FIXME - no timeout 694 695#ifndef SCSI_G_NCR5380_MEM 696 { 697 for (i = 0; i < 128; i++) 698 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 699 } 700#else 701 /* implies SCSI_G_NCR5380_MEM */ 702 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 703#endif 704 start += 128; 705 blocks--; 706 } 707 708#if 0 709 printk("53C400w: waiting for registers to be available\n"); 710 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); 711 printk("53C400w: Got em\n"); 712#endif 713 714 /* Let's wait for this instead - could be ugly */ 715 /* All documentation says to check for this. Maybe my hardware is too 716 * fast. Waiting for it seems to work fine! KLL 717 */ 718 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 719 ; // FIXME - no timeout 720 721 /* 722 * I know. i is certainly != 0 here but the loop is new. See previous 723 * comment. 724 */ 725 if (i) { 726 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) 727 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); 728 } else 729 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); 730 731#if 0 732 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { 733 printk(KERN_ERR "53C400w: no end dma signal\n"); 734 } 735#endif 736 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) 737 ; // TIMEOUT 738 return 0; 739} 740#endif /* PSEUDO_DMA */ 741 742/* 743 * Include the NCR5380 core code that we build our driver around 744 */ 745 746#include "NCR5380.c" 747 748#define PRINTP(x) len += sprintf(buffer+len, x) 749#define ANDP , 750 751static int sprint_opcode(char *buffer, int len, int opcode) 752{ 753 int start = len; 754 PRINTP("0x%02x " ANDP opcode); 755 return len - start; 756} 757 758static int sprint_command(char *buffer, int len, unsigned char *command) 759{ 760 int i, s, start = len; 761 len += sprint_opcode(buffer, len, command[0]); 762 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) 763 PRINTP("%02x " ANDP command[i]); 764 PRINTP("\n"); 765 return len - start; 766} 767 768/** 769 * sprintf_Scsi_Cmnd - print a scsi command 770 * @buffer: buffr to print into 771 * @len: buffer length 772 * @cmd: SCSI command block 773 * 774 * Print out the target and command data in hex 775 */ 776 777static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd) 778{ 779 int start = len; 780 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); 781 PRINTP(" command = "); 782 len += sprint_command(buffer, len, cmd->cmnd); 783 return len - start; 784} 785 786/** 787 * generic_NCR5380_proc_info - /proc for NCR5380 driver 788 * @buffer: buffer to print into 789 * @start: start position 790 * @offset: offset into buffer 791 * @len: length 792 * @hostno: instance to affect 793 * @inout: read/write 794 * 795 * Provide the procfs information for the 5380 controller. We fill 796 * this with useful debugging information including the commands 797 * being executed, disconnected command queue and the statistical 798 * data 799 * 800 * Locks: global cli/lock for queue walk 801 */ 802 803static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout) 804{ 805 int len = 0; 806 NCR5380_local_declare(); 807 unsigned long flags; 808 unsigned char status; 809 int i; 810 Scsi_Cmnd *ptr; 811 struct NCR5380_hostdata *hostdata; 812#ifdef NCR5380_STATS 813 struct scsi_device *dev; 814#endif 815 816 NCR5380_setup(scsi_ptr); 817 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 818 819 spin_lock_irqsave(scsi_ptr->host_lock, flags); 820 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 821 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 822 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 823#ifdef NCR53C400 824 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 825 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 826# if NCR53C400_PSEUDO_DMA 827 PRINTP("NCR53C400 pseudo DMA used\n"); 828# endif 829#else 830 PRINTP("NO NCR53C400 driver extensions\n"); 831#endif 832 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 833 if (scsi_ptr->irq == SCSI_IRQ_NONE) 834 PRINTP("no interrupt\n"); 835 else 836 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 837 838#ifdef NCR5380_STATS 839 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 840 PRINTP("There are commands pending, transfer rates may be crud\n"); 841 if (hostdata->pendingr) 842 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 843 if (hostdata->pendingw) 844 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 845 if (hostdata->pendingr || hostdata->pendingw) 846 PRINTP("\n"); 847 shost_for_each_device(dev, scsi_ptr) { 848 unsigned long br = hostdata->bytes_read[dev->id]; 849 unsigned long bw = hostdata->bytes_write[dev->id]; 850 long tr = hostdata->time_read[dev->id] / HZ; 851 long tw = hostdata->time_write[dev->id] / HZ; 852 853 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type)); 854 for (i = 0; i < 8; i++) 855 if (dev->vendor[i] >= 0x20) 856 *(buffer + (len++)) = dev->vendor[i]; 857 *(buffer + (len++)) = ' '; 858 for (i = 0; i < 16; i++) 859 if (dev->model[i] >= 0x20) 860 *(buffer + (len++)) = dev->model[i]; 861 *(buffer + (len++)) = ' '; 862 for (i = 0; i < 4; i++) 863 if (dev->rev[i] >= 0x20) 864 *(buffer + (len++)) = dev->rev[i]; 865 *(buffer + (len++)) = ' '; 866 867 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 868 if (tr) 869 PRINTP(" @ %5ld bps" ANDP br / tr); 870 871 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 872 if (tw) 873 PRINTP(" @ %5ld bps" ANDP bw / tw); 874 PRINTP("\n"); 875 } 876#endif 877 878 status = NCR5380_read(STATUS_REG); 879 if (!(status & SR_REQ)) 880 PRINTP("REQ not asserted, phase unknown.\n"); 881 else { 882 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 883 PRINTP("Phase %s\n" ANDP phases[i].name); 884 } 885 886 if (!hostdata->connected) { 887 PRINTP("No currently connected command\n"); 888 } else { 889 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected); 890 } 891 892 PRINTP("issue_queue\n"); 893 894 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 895 len += sprint_Scsi_Cmnd(buffer, len, ptr); 896 897 PRINTP("disconnected_queue\n"); 898 899 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 900 len += sprint_Scsi_Cmnd(buffer, len, ptr); 901 902 *start = buffer + offset; 903 len -= offset; 904 if (len > length) 905 len = length; 906 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 907 return len; 908} 909 910#undef PRINTP 911#undef ANDP 912 913static struct scsi_host_template driver_template = { 914 .proc_info = generic_NCR5380_proc_info, 915 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 916 .detect = generic_NCR5380_detect, 917 .release = generic_NCR5380_release_resources, 918 .info = generic_NCR5380_info, 919 .queuecommand = generic_NCR5380_queue_command, 920 .eh_abort_handler = generic_NCR5380_abort, 921 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 922 .bios_param = NCR5380_BIOSPARAM, 923 .can_queue = CAN_QUEUE, 924 .this_id = 7, 925 .sg_tablesize = SG_ALL, 926 .cmd_per_lun = CMD_PER_LUN, 927 .use_clustering = DISABLE_CLUSTERING, 928}; 929#include <linux/module.h> 930#include "scsi_module.c" 931 932module_param(ncr_irq, int, 0); 933module_param(ncr_dma, int, 0); 934module_param(ncr_addr, int, 0); 935module_param(ncr_5380, int, 0); 936module_param(ncr_53c400, int, 0); 937module_param(ncr_53c400a, int, 0); 938module_param(dtc_3181e, int, 0); 939MODULE_LICENSE("GPL"); 940 941#ifndef SCSI_G_NCR5380_MEM 942static struct isapnp_device_id id_table[] __devinitdata = { 943 { 944 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 945 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 946 0}, 947 {0} 948}; 949 950MODULE_DEVICE_TABLE(isapnp, id_table); 951#endif 952 953__setup("ncr5380=", do_NCR5380_setup); 954__setup("ncr53c400=", do_NCR53C400_setup); 955__setup("ncr53c400a=", do_NCR53C400A_setup); 956__setup("dtc3181e=", do_DTC3181E_setup); 957