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: g_NCR5380.c,v $ 83 * Revision 1.1.1.1 2007/08/03 18:52:56 rnuti 84 * Importing Linux MIPS Kernel 2.6.22 85 * 86 */ 87 88/* settings for DTC3181E card with only Mustek scanner attached */ 89#define USLEEP 90#define USLEEP_POLL 1 91#define USLEEP_SLEEP 20 92#define USLEEP_WAITLONG 500 93 94#define AUTOPROBE_IRQ 95#define AUTOSENSE 96 97 98#ifdef CONFIG_SCSI_GENERIC_NCR53C400 99#define NCR53C400_PSEUDO_DMA 1 100#define PSEUDO_DMA 101#define NCR53C400 102#define NCR5380_STATS 103#undef NCR5380_STAT_LIMIT 104#endif 105 106#include <asm/system.h> 107#include <asm/io.h> 108#include <linux/signal.h> 109#include <linux/blkdev.h> 110#include "scsi.h" 111#include <scsi/scsi_host.h> 112#include "g_NCR5380.h" 113#include "NCR5380.h" 114#include <linux/stat.h> 115#include <linux/init.h> 116#include <linux/ioport.h> 117#include <linux/isapnp.h> 118#include <linux/delay.h> 119#include <linux/interrupt.h> 120 121#define NCR_NOT_SET 0 122static int ncr_irq = NCR_NOT_SET; 123static int ncr_dma = NCR_NOT_SET; 124static int ncr_addr = NCR_NOT_SET; 125static int ncr_5380 = NCR_NOT_SET; 126static int ncr_53c400 = NCR_NOT_SET; 127static int ncr_53c400a = NCR_NOT_SET; 128static int dtc_3181e = NCR_NOT_SET; 129 130static struct override { 131 NCR5380_map_type NCR5380_map_name; 132 int irq; 133 int dma; 134 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ 135} overrides 136#ifdef GENERIC_NCR5380_OVERRIDE 137[] __initdata = GENERIC_NCR5380_OVERRIDE; 138#else 139[1] __initdata = { { 0,},}; 140#endif 141 142#define NO_OVERRIDES ARRAY_SIZE(overrides) 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 158static 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 209static int __init do_NCR5380_setup(char *str) 210{ 211 int ints[10]; 212 213 get_options(str, ARRAY_SIZE(ints), 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 227static int __init do_NCR53C400_setup(char *str) 228{ 229 int ints[10]; 230 231 get_options(str, ARRAY_SIZE(ints), 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 245static int __init do_NCR53C400A_setup(char *str) 246{ 247 int ints[10]; 248 249 get_options(str, ARRAY_SIZE(ints), 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 263static int __init do_DTC3181E_setup(char *str) 264{ 265 int ints[10]; 266 267 get_options(str, ARRAY_SIZE(ints), 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 288int __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#ifdef CONFIG_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; 321 322 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 printk(KERN_ERR "dtc436e probe: attach failed\n"); 330 continue; 331 } 332 if (pnp_activate_dev(dev) < 0) { 333 printk(KERN_ERR "dtc436e probe: activate failed\n"); 334 pnp_device_detach(dev); 335 continue; 336 } 337 if (!pnp_port_valid(dev, 0)) { 338 printk(KERN_ERR "dtc436e probe: no valid port\n"); 339 pnp_device_detach(dev); 340 continue; 341 } 342 if (pnp_irq_valid(dev, 0)) 343 overrides[count].irq = pnp_irq(dev, 0); 344 else 345 overrides[count].irq = SCSI_IRQ_NONE; 346 if (pnp_dma_valid(dev, 0)) 347 overrides[count].dma = pnp_dma(dev, 0); 348 else 349 overrides[count].dma = DMA_NONE; 350 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); 351 overrides[count].board = BOARD_DTC3181E; 352 count++; 353 } 354 } 355 356 tpnt->proc_name = "g_NCR5380"; 357 358 for (count = 0; current_override < NO_OVERRIDES; ++current_override) { 359 if (!(overrides[current_override].NCR5380_map_name)) 360 continue; 361 362 ports = NULL; 363 switch (overrides[current_override].board) { 364 case BOARD_NCR5380: 365 flags = FLAG_NO_PSEUDO_DMA; 366 break; 367 case BOARD_NCR53C400: 368 flags = FLAG_NCR53C400; 369 break; 370 case BOARD_NCR53C400A: 371 flags = FLAG_NO_PSEUDO_DMA; 372 ports = ncr_53c400a_ports; 373 break; 374 case BOARD_DTC3181E: 375 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E; 376 ports = dtc_3181e_ports; 377 break; 378 } 379 380#ifndef CONFIG_SCSI_G_NCR5380_MEM 381 if (ports) { 382 /* wakeup sequence for the NCR53C400A and DTC3181E */ 383 384 /* Disable the adapter and look for a free io port */ 385 outb(0x59, 0x779); 386 outb(0xb9, 0x379); 387 outb(0xc5, 0x379); 388 outb(0xae, 0x379); 389 outb(0xa6, 0x379); 390 outb(0x00, 0x379); 391 392 if (overrides[current_override].NCR5380_map_name != PORT_AUTO) 393 for (i = 0; ports[i]; i++) { 394 if (!request_region(ports[i], 16, "ncr53c80")) 395 continue; 396 if (overrides[current_override].NCR5380_map_name == ports[i]) 397 break; 398 release_region(ports[i], 16); 399 } else 400 for (i = 0; ports[i]; i++) { 401 if (!request_region(ports[i], 16, "ncr53c80")) 402 continue; 403 if (inb(ports[i]) == 0xff) 404 break; 405 release_region(ports[i], 16); 406 } 407 if (ports[i]) { 408 /* At this point we have our region reserved */ 409 outb(0x59, 0x779); 410 outb(0xb9, 0x379); 411 outb(0xc5, 0x379); 412 outb(0xae, 0x379); 413 outb(0xa6, 0x379); 414 outb(0x80 | i, 0x379); /* set io port to be used */ 415 outb(0xc0, ports[i] + 9); 416 if (inb(ports[i] + 9) != 0x80) 417 continue; 418 else 419 overrides[current_override].NCR5380_map_name = ports[i]; 420 } else 421 continue; 422 } 423 else 424 { 425 /* Not a 53C400A style setup - just grab */ 426 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) 427 continue; 428 region_size = NCR5380_region_size; 429 } 430#else 431 base = overrides[current_override].NCR5380_map_name; 432 if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) 433 continue; 434 iomem = ioremap(base, NCR5380_region_size); 435 if (!iomem) { 436 release_mem_region(base, NCR5380_region_size); 437 continue; 438 } 439#endif 440 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); 441 if (instance == NULL) { 442#ifndef CONFIG_SCSI_G_NCR5380_MEM 443 release_region(overrides[current_override].NCR5380_map_name, region_size); 444#else 445 iounmap(iomem); 446 release_mem_region(base, NCR5380_region_size); 447#endif 448 continue; 449 } 450 451 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name; 452#ifndef CONFIG_SCSI_G_NCR5380_MEM 453 instance->n_io_port = region_size; 454#else 455 ((struct NCR5380_hostdata *)instance->hostdata).iomem = iomem; 456#endif 457 458 NCR5380_init(instance, flags); 459 460 if (overrides[current_override].irq != IRQ_AUTO) 461 instance->irq = overrides[current_override].irq; 462 else 463 instance->irq = NCR5380_probe_irq(instance, 0xffff); 464 465 if (instance->irq != SCSI_IRQ_NONE) 466 if (request_irq(instance->irq, generic_NCR5380_intr, IRQF_DISABLED, "NCR5380", instance)) { 467 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); 468 instance->irq = SCSI_IRQ_NONE; 469 } 470 471 if (instance->irq == SCSI_IRQ_NONE) { 472 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); 473 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); 474 } 475 476 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name); 477 if (instance->irq == SCSI_IRQ_NONE) 478 printk(" interrupts disabled"); 479 else 480 printk(" irq %d", instance->irq); 481 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE); 482 NCR5380_print_options(instance); 483 printk("\n"); 484 485 ++current_override; 486 ++count; 487 } 488 return count; 489} 490 491/** 492 * generic_NCR5380_info - reporting string 493 * @host: NCR5380 to report on 494 * 495 * Report driver information for the NCR5380 496 */ 497 498const char *generic_NCR5380_info(struct Scsi_Host *host) 499{ 500 static const char string[] = "Generic NCR5380/53C400 Driver"; 501 return string; 502} 503 504/** 505 * generic_NCR5380_release_resources - free resources 506 * @instance: host adapter to clean up 507 * 508 * Free the generic interface resources from this adapter. 509 * 510 * Locks: none 511 */ 512 513int generic_NCR5380_release_resources(struct Scsi_Host *instance) 514{ 515 NCR5380_local_declare(); 516 NCR5380_setup(instance); 517 518 if (instance->irq != SCSI_IRQ_NONE) 519 free_irq(instance->irq, NULL); 520 NCR5380_exit(instance); 521 522#ifndef CONFIG_SCSI_G_NCR5380_MEM 523 release_region(instance->NCR5380_instance_name, instance->n_io_port); 524#else 525 iounmap(((struct NCR5380_hostdata *)instance->hostdata).iomem); 526 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size); 527#endif 528 529 530 return 0; 531} 532 533#ifdef BIOSPARAM 534 535static int 536generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, 537 sector_t capacity, int *ip) 538{ 539 ip[0] = 64; 540 ip[1] = 32; 541 ip[2] = capacity >> 11; 542 return 0; 543} 544#endif 545 546#if NCR53C400_PSEUDO_DMA 547 548/** 549 * NCR5380_pread - pseudo DMA read 550 * @instance: adapter to read from 551 * @dst: buffer to read into 552 * @len: buffer length 553 * 554 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 555 * controller 556 */ 557 558static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) 559{ 560 int blocks = len / 128; 561 int start = 0; 562 int bl; 563 564 NCR5380_local_declare(); 565 NCR5380_setup(instance); 566 567 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); 568 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 569 while (1) { 570 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 571 break; 572 } 573 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 574 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 575 return -1; 576 } 577 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); 578 579#ifndef CONFIG_SCSI_G_NCR5380_MEM 580 { 581 int i; 582 for (i = 0; i < 128; i++) 583 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 584 } 585#else 586 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 587 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 588#endif 589 start += 128; 590 blocks--; 591 } 592 593 if (blocks) { 594 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 595 { 596 } 597 598#ifndef CONFIG_SCSI_G_NCR5380_MEM 599 { 600 int i; 601 for (i = 0; i < 128; i++) 602 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 603 } 604#else 605 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 606 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 607#endif 608 start += 128; 609 blocks--; 610 } 611 612 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 613 printk("53C400r: no 53C80 gated irq after transfer"); 614 615 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) 616 printk(KERN_ERR "53C400r: no end dma signal\n"); 617 618 NCR5380_write(MODE_REG, MR_BASE); 619 NCR5380_read(RESET_PARITY_INTERRUPT_REG); 620 return 0; 621} 622 623/** 624 * NCR5380_write - pseudo DMA write 625 * @instance: adapter to read from 626 * @dst: buffer to read into 627 * @len: buffer length 628 * 629 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 630 * controller 631 */ 632 633static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) 634{ 635 int blocks = len / 128; 636 int start = 0; 637 int bl; 638 int i; 639 640 NCR5380_local_declare(); 641 NCR5380_setup(instance); 642 643 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); 644 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 645 while (1) { 646 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 647 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 648 return -1; 649 } 650 651 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 652 break; 653 } 654 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 655 ; 656#ifndef CONFIG_SCSI_G_NCR5380_MEM 657 { 658 for (i = 0; i < 128; i++) 659 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 660 } 661#else 662 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 663 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 664#endif 665 start += 128; 666 blocks--; 667 } 668 if (blocks) { 669 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 670 ; 671 672#ifndef CONFIG_SCSI_G_NCR5380_MEM 673 { 674 for (i = 0; i < 128; i++) 675 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 676 } 677#else 678 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 679 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 680#endif 681 start += 128; 682 blocks--; 683 } 684 685 686 /* Let's wait for this instead - could be ugly */ 687 /* All documentation says to check for this. Maybe my hardware is too 688 * fast. Waiting for it seems to work fine! KLL 689 */ 690 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 691 ; 692 693 /* 694 * I know. i is certainly != 0 here but the loop is new. See previous 695 * comment. 696 */ 697 if (i) { 698 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) 699 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); 700 } else 701 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); 702 703 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) 704 ; // TIMEOUT 705 return 0; 706} 707#endif /* PSEUDO_DMA */ 708 709/* 710 * Include the NCR5380 core code that we build our driver around 711 */ 712 713#include "NCR5380.c" 714 715#define PRINTP(x) len += sprintf(buffer+len, x) 716#define ANDP , 717 718static int sprint_opcode(char *buffer, int len, int opcode) 719{ 720 int start = len; 721 PRINTP("0x%02x " ANDP opcode); 722 return len - start; 723} 724 725static int sprint_command(char *buffer, int len, unsigned char *command) 726{ 727 int i, s, start = len; 728 len += sprint_opcode(buffer, len, command[0]); 729 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) 730 PRINTP("%02x " ANDP command[i]); 731 PRINTP("\n"); 732 return len - start; 733} 734 735/** 736 * sprintf_Scsi_Cmnd - print a scsi command 737 * @buffer: buffr to print into 738 * @len: buffer length 739 * @cmd: SCSI command block 740 * 741 * Print out the target and command data in hex 742 */ 743 744static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd) 745{ 746 int start = len; 747 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); 748 PRINTP(" command = "); 749 len += sprint_command(buffer, len, cmd->cmnd); 750 return len - start; 751} 752 753/** 754 * generic_NCR5380_proc_info - /proc for NCR5380 driver 755 * @buffer: buffer to print into 756 * @start: start position 757 * @offset: offset into buffer 758 * @len: length 759 * @hostno: instance to affect 760 * @inout: read/write 761 * 762 * Provide the procfs information for the 5380 controller. We fill 763 * this with useful debugging information including the commands 764 * being executed, disconnected command queue and the statistical 765 * data 766 * 767 * Locks: global cli/lock for queue walk 768 */ 769 770static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout) 771{ 772 int len = 0; 773 NCR5380_local_declare(); 774 unsigned long flags; 775 unsigned char status; 776 int i; 777 Scsi_Cmnd *ptr; 778 struct NCR5380_hostdata *hostdata; 779#ifdef NCR5380_STATS 780 struct scsi_device *dev; 781#endif 782 783 NCR5380_setup(scsi_ptr); 784 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 785 786 spin_lock_irqsave(scsi_ptr->host_lock, flags); 787 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 788 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 789 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 790#ifdef NCR53C400 791 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 792 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 793# if NCR53C400_PSEUDO_DMA 794 PRINTP("NCR53C400 pseudo DMA used\n"); 795# endif 796#else 797 PRINTP("NO NCR53C400 driver extensions\n"); 798#endif 799 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 800 if (scsi_ptr->irq == SCSI_IRQ_NONE) 801 PRINTP("no interrupt\n"); 802 else 803 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 804 805#ifdef NCR5380_STATS 806 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 807 PRINTP("There are commands pending, transfer rates may be crud\n"); 808 if (hostdata->pendingr) 809 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 810 if (hostdata->pendingw) 811 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 812 if (hostdata->pendingr || hostdata->pendingw) 813 PRINTP("\n"); 814 shost_for_each_device(dev, scsi_ptr) { 815 unsigned long br = hostdata->bytes_read[dev->id]; 816 unsigned long bw = hostdata->bytes_write[dev->id]; 817 long tr = hostdata->time_read[dev->id] / HZ; 818 long tw = hostdata->time_write[dev->id] / HZ; 819 820 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type)); 821 for (i = 0; i < 8; i++) 822 if (dev->vendor[i] >= 0x20) 823 *(buffer + (len++)) = dev->vendor[i]; 824 *(buffer + (len++)) = ' '; 825 for (i = 0; i < 16; i++) 826 if (dev->model[i] >= 0x20) 827 *(buffer + (len++)) = dev->model[i]; 828 *(buffer + (len++)) = ' '; 829 for (i = 0; i < 4; i++) 830 if (dev->rev[i] >= 0x20) 831 *(buffer + (len++)) = dev->rev[i]; 832 *(buffer + (len++)) = ' '; 833 834 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 835 if (tr) 836 PRINTP(" @ %5ld bps" ANDP br / tr); 837 838 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 839 if (tw) 840 PRINTP(" @ %5ld bps" ANDP bw / tw); 841 PRINTP("\n"); 842 } 843#endif 844 845 status = NCR5380_read(STATUS_REG); 846 if (!(status & SR_REQ)) 847 PRINTP("REQ not asserted, phase unknown.\n"); 848 else { 849 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 850 PRINTP("Phase %s\n" ANDP phases[i].name); 851 } 852 853 if (!hostdata->connected) { 854 PRINTP("No currently connected command\n"); 855 } else { 856 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected); 857 } 858 859 PRINTP("issue_queue\n"); 860 861 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 862 len += sprint_Scsi_Cmnd(buffer, len, ptr); 863 864 PRINTP("disconnected_queue\n"); 865 866 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 867 len += sprint_Scsi_Cmnd(buffer, len, ptr); 868 869 *start = buffer + offset; 870 len -= offset; 871 if (len > length) 872 len = length; 873 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 874 return len; 875} 876 877#undef PRINTP 878#undef ANDP 879 880static struct scsi_host_template driver_template = { 881 .proc_info = generic_NCR5380_proc_info, 882 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 883 .detect = generic_NCR5380_detect, 884 .release = generic_NCR5380_release_resources, 885 .info = generic_NCR5380_info, 886 .queuecommand = generic_NCR5380_queue_command, 887 .eh_abort_handler = generic_NCR5380_abort, 888 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 889 .bios_param = NCR5380_BIOSPARAM, 890 .can_queue = CAN_QUEUE, 891 .this_id = 7, 892 .sg_tablesize = SG_ALL, 893 .cmd_per_lun = CMD_PER_LUN, 894 .use_clustering = DISABLE_CLUSTERING, 895}; 896#include <linux/module.h> 897#include "scsi_module.c" 898 899module_param(ncr_irq, int, 0); 900module_param(ncr_dma, int, 0); 901module_param(ncr_addr, int, 0); 902module_param(ncr_5380, int, 0); 903module_param(ncr_53c400, int, 0); 904module_param(ncr_53c400a, int, 0); 905module_param(dtc_3181e, int, 0); 906MODULE_LICENSE("GPL"); 907 908 909static struct isapnp_device_id id_table[] __devinitdata = { 910 { 911 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 912 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 913 0}, 914 {0} 915}; 916 917MODULE_DEVICE_TABLE(isapnp, id_table); 918 919 920__setup("ncr5380=", do_NCR5380_setup); 921__setup("ncr53c400=", do_NCR53C400_setup); 922__setup("ncr53c400a=", do_NCR53C400A_setup); 923__setup("dtc3181e=", do_DTC3181E_setup); 924