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 0 119 static int ncr_irq = NCR_NOT_SET; 120 static int ncr_dma = NCR_NOT_SET; 121 static int ncr_addr = NCR_NOT_SET; 122 static int ncr_5380 = NCR_NOT_SET; 123 static int ncr_53c400 = NCR_NOT_SET; 124 static int ncr_53c400a = NCR_NOT_SET; 125 static int dtc_3181e = NCR_NOT_SET; 126 127 static 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 */ 154 155 static 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 */ 205 206 static 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 */ 223 224 static 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 */ 241 242 static 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 */ 259 260 static 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 */ 284 285 int __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 */ 496 497 const 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 */ 511 512 int 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 /** 534 * generic_NCR5380_biosparam 535 * @disk: disk to compute geometry for 536 * @dev: device identifier for this disk 537 * @ip: sizes to fill in 538 * 539 * Generates a BIOS / DOS compatible H-C-S mapping for the specified 540 * device / size. 541 * 542 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone 543 * using hard disks on a trantor should verify that this mapping 544 * corresponds to that used by the BIOS / ASPI driver by running the linux 545 * fdisk program and matching the H_C_S coordinates to what DOS uses. 546 * 547 * Locks: none 548 */ 549 550 static int 551 generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, 552 sector_t capacity, int *ip) 553 { 554 ip[0] = 64; 555 ip[1] = 32; 556 ip[2] = capacity >> 11; 557 return 0; 558 } 559 #endif 560 561 #ifdef NCR53C400_PSEUDO_DMA 562 563 /** 564 * NCR5380_pread - pseudo DMA read 565 * @instance: adapter to read from 566 * @dst: buffer to read into 567 * @len: buffer length 568 * 569 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 570 * controller 571 */ 572 573 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) 574 { 575 int blocks = len / 128; 576 int start = 0; 577 int bl; 578 579 NCR5380_local_declare(); 580 NCR5380_setup(instance); 581 582 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); 583 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 584 while (1) { 585 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 586 break; 587 } 588 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 589 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 590 return -1; 591 } 592 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); 593 594 #ifndef SCSI_G_NCR5380_MEM 595 { 596 int i; 597 for (i = 0; i < 128; i++) 598 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 599 } 600 #else 601 /* implies SCSI_G_NCR5380_MEM */ 602 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 603 #endif 604 start += 128; 605 blocks--; 606 } 607 608 if (blocks) { 609 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 610 { 611 // FIXME - no timeout 612 } 613 614 #ifndef SCSI_G_NCR5380_MEM 615 { 616 int i; 617 for (i = 0; i < 128; i++) 618 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 619 } 620 #else 621 /* implies SCSI_G_NCR5380_MEM */ 622 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 623 #endif 624 start += 128; 625 blocks--; 626 } 627 628 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 629 printk("53C400r: no 53C80 gated irq after transfer"); 630 631 #if 0 632 /* 633 * DON'T DO THIS - THEY NEVER ARRIVE! 634 */ 635 printk("53C400r: Waiting for 53C80 registers\n"); 636 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) 637 ; 638 #endif 639 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) 640 printk(KERN_ERR "53C400r: no end dma signal\n"); 641 642 NCR5380_write(MODE_REG, MR_BASE); 643 NCR5380_read(RESET_PARITY_INTERRUPT_REG); 644 return 0; 645 } 646 647 /** 648 * NCR5380_write - pseudo DMA write 649 * @instance: adapter to read from 650 * @dst: buffer to read into 651 * @len: buffer length 652 * 653 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 654 * controller 655 */ 656 657 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) 658 { 659 int blocks = len / 128; 660 int start = 0; 661 int bl; 662 int i; 663 664 NCR5380_local_declare(); 665 NCR5380_setup(instance); 666 667 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); 668 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 669 while (1) { 670 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 671 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 672 return -1; 673 } 674 675 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 676 break; 677 } 678 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 679 ; // FIXME - timeout 680 #ifndef SCSI_G_NCR5380_MEM 681 { 682 for (i = 0; i < 128; i++) 683 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 684 } 685 #else 686 /* implies SCSI_G_NCR5380_MEM */ 687 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 688 #endif 689 start += 128; 690 blocks--; 691 } 692 if (blocks) { 693 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 694 ; // FIXME - no timeout 695 696 #ifndef SCSI_G_NCR5380_MEM 697 { 698 for (i = 0; i < 128; i++) 699 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 700 } 701 #else 702 /* implies SCSI_G_NCR5380_MEM */ 703 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 704 #endif 705 start += 128; 706 blocks--; 707 } 708 709 #if 0 710 printk("53C400w: waiting for registers to be available\n"); 711 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); 712 printk("53C400w: Got em\n"); 713 #endif 714 715 /* Let's wait for this instead - could be ugly */ 716 /* All documentation says to check for this. Maybe my hardware is too 717 * fast. Waiting for it seems to work fine! KLL 718 */ 719 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 720 ; // FIXME - no timeout 721 722 /* 723 * I know. i is certainly != 0 here but the loop is new. See previous 724 * comment. 725 */ 726 if (i) { 727 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) 728 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); 729 } else 730 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); 731 732 #if 0 733 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { 734 printk(KERN_ERR "53C400w: no end dma signal\n"); 735 } 736 #endif 737 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) 738 ; // TIMEOUT 739 return 0; 740 } 741 #endif /* PSEUDO_DMA */ 742 743 /* 744 * Include the NCR5380 core code that we build our driver around 745 */ 746 747 #include "NCR5380.c" 748 749 #define PRINTP(x) len += sprintf(buffer+len, x) 750 #define ANDP , 751 752 static int sprint_opcode(char *buffer, int len, int opcode) 753 { 754 int start = len; 755 PRINTP("0x%02x " ANDP opcode); 756 return len - start; 757 } 758 759 static int sprint_command(char *buffer, int len, unsigned char *command) 760 { 761 int i, s, start = len; 762 len += sprint_opcode(buffer, len, command[0]); 763 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) 764 PRINTP("%02x " ANDP command[i]); 765 PRINTP("\n"); 766 return len - start; 767 } 768 769 /** 770 * sprintf_Scsi_Cmnd - print a scsi command 771 * @buffer: buffr to print into 772 * @len: buffer length 773 * @cmd: SCSI command block 774 * 775 * Print out the target and command data in hex 776 */ 777 778 static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd) 779 { 780 int start = len; 781 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); 782 PRINTP(" command = "); 783 len += sprint_command(buffer, len, cmd->cmnd); 784 return len - start; 785 } 786 787 /** 788 * generic_NCR5380_proc_info - /proc for NCR5380 driver 789 * @buffer: buffer to print into 790 * @start: start position 791 * @offset: offset into buffer 792 * @len: length 793 * @hostno: instance to affect 794 * @inout: read/write 795 * 796 * Provide the procfs information for the 5380 controller. We fill 797 * this with useful debugging information including the commands 798 * being executed, disconnected command queue and the statistical 799 * data 800 * 801 * Locks: global cli/lock for queue walk 802 */ 803 804 static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout) 805 { 806 int len = 0; 807 NCR5380_local_declare(); 808 unsigned long flags; 809 unsigned char status; 810 int i; 811 Scsi_Cmnd *ptr; 812 struct NCR5380_hostdata *hostdata; 813 #ifdef NCR5380_STATS 814 struct scsi_device *dev; 815 #endif 816 817 NCR5380_setup(scsi_ptr); 818 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 819 820 spin_lock_irqsave(scsi_ptr->host_lock, flags); 821 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 822 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 823 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 824 #ifdef NCR53C400 825 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 826 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 827 # if NCR53C400_PSEUDO_DMA 828 PRINTP("NCR53C400 pseudo DMA used\n"); 829 # endif 830 #else 831 PRINTP("NO NCR53C400 driver extensions\n"); 832 #endif 833 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 834 if (scsi_ptr->irq == SCSI_IRQ_NONE) 835 PRINTP("no interrupt\n"); 836 else 837 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 838 839 #ifdef NCR5380_STATS 840 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 841 PRINTP("There are commands pending, transfer rates may be crud\n"); 842 if (hostdata->pendingr) 843 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 844 if (hostdata->pendingw) 845 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 846 if (hostdata->pendingr || hostdata->pendingw) 847 PRINTP("\n"); 848 shost_for_each_device(dev, scsi_ptr) { 849 unsigned long br = hostdata->bytes_read[dev->id]; 850 unsigned long bw = hostdata->bytes_write[dev->id]; 851 long tr = hostdata->time_read[dev->id] / HZ; 852 long tw = hostdata->time_write[dev->id] / HZ; 853 854 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type)); 855 for (i = 0; i < 8; i++) 856 if (dev->vendor[i] >= 0x20) 857 *(buffer + (len++)) = dev->vendor[i]; 858 *(buffer + (len++)) = ' '; 859 for (i = 0; i < 16; i++) 860 if (dev->model[i] >= 0x20) 861 *(buffer + (len++)) = dev->model[i]; 862 *(buffer + (len++)) = ' '; 863 for (i = 0; i < 4; i++) 864 if (dev->rev[i] >= 0x20) 865 *(buffer + (len++)) = dev->rev[i]; 866 *(buffer + (len++)) = ' '; 867 868 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 869 if (tr) 870 PRINTP(" @ %5ld bps" ANDP br / tr); 871 872 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 873 if (tw) 874 PRINTP(" @ %5ld bps" ANDP bw / tw); 875 PRINTP("\n"); 876 } 877 #endif 878 879 status = NCR5380_read(STATUS_REG); 880 if (!(status & SR_REQ)) 881 PRINTP("REQ not asserted, phase unknown.\n"); 882 else { 883 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 884 PRINTP("Phase %s\n" ANDP phases[i].name); 885 } 886 887 if (!hostdata->connected) { 888 PRINTP("No currently connected command\n"); 889 } else { 890 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected); 891 } 892 893 PRINTP("issue_queue\n"); 894 895 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 896 len += sprint_Scsi_Cmnd(buffer, len, ptr); 897 898 PRINTP("disconnected_queue\n"); 899 900 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 901 len += sprint_Scsi_Cmnd(buffer, len, ptr); 902 903 *start = buffer + offset; 904 len -= offset; 905 if (len > length) 906 len = length; 907 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 908 return len; 909 } 910 911 #undef PRINTP 912 #undef ANDP 913 914 static struct scsi_host_template driver_template = { 915 .proc_info = generic_NCR5380_proc_info, 916 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 917 .detect = generic_NCR5380_detect, 918 .release = generic_NCR5380_release_resources, 919 .info = generic_NCR5380_info, 920 .queuecommand = generic_NCR5380_queue_command, 921 .eh_abort_handler = generic_NCR5380_abort, 922 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 923 .bios_param = NCR5380_BIOSPARAM, 924 .can_queue = CAN_QUEUE, 925 .this_id = 7, 926 .sg_tablesize = SG_ALL, 927 .cmd_per_lun = CMD_PER_LUN, 928 .use_clustering = DISABLE_CLUSTERING, 929 }; 930 #include <linux/module.h> 931 #include "scsi_module.c" 932 933 module_param(ncr_irq, int, 0); 934 module_param(ncr_dma, int, 0); 935 module_param(ncr_addr, int, 0); 936 module_param(ncr_5380, int, 0); 937 module_param(ncr_53c400, int, 0); 938 module_param(ncr_53c400a, int, 0); 939 module_param(dtc_3181e, int, 0); 940 MODULE_LICENSE("GPL"); 941 942 #ifndef SCSI_G_NCR5380_MEM 943 static struct isapnp_device_id id_table[] __devinitdata = { 944 { 945 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 946 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 947 0}, 948 {0} 949 }; 950 951 MODULE_DEVICE_TABLE(isapnp, id_table); 952 #endif 953 954 __setup("ncr5380=", do_NCR5380_setup); 955 __setup("ncr53c400=", do_NCR53C400_setup); 956 __setup("ncr53c400a=", do_NCR53C400A_setup); 957 __setup("dtc3181e=", do_DTC3181E_setup); 958