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/sched.h> 107 #include <linux/blkdev.h> 108 #include "scsi.h" 109 #include <scsi/scsi_host.h> 110 #include "g_NCR5380.h" 111 #include "NCR5380.h" 112 #include <linux/stat.h> 113 #include <linux/init.h> 114 #include <linux/ioport.h> 115 #include <linux/isapnp.h> 116 #include <linux/delay.h> 117 #include <linux/interrupt.h> 118 119 #define NCR_NOT_SET 0 120 static int ncr_irq = NCR_NOT_SET; 121 static int ncr_dma = NCR_NOT_SET; 122 static int ncr_addr = NCR_NOT_SET; 123 static int ncr_5380 = NCR_NOT_SET; 124 static int ncr_53c400 = NCR_NOT_SET; 125 static int ncr_53c400a = NCR_NOT_SET; 126 static int dtc_3181e = NCR_NOT_SET; 127 128 static struct override { 129 NCR5380_map_type NCR5380_map_name; 130 int irq; 131 int dma; 132 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ 133 } overrides 134 #ifdef GENERIC_NCR5380_OVERRIDE 135 [] __initdata = GENERIC_NCR5380_OVERRIDE; 136 #else 137 [1] __initdata = { { 0,},}; 138 #endif 139 140 #define NO_OVERRIDES ARRAY_SIZE(overrides) 141 142 #ifndef MODULE 143 144 /** 145 * internal_setup - handle lilo command string override 146 * @board: BOARD_* identifier for the board 147 * @str: unused 148 * @ints: numeric parameters 149 * 150 * Do LILO command line initialization of the overrides array. Display 151 * errors when needed 152 * 153 * Locks: none 154 */ 155 156 static void __init internal_setup(int board, char *str, int *ints) 157 { 158 static int commandline_current = 0; 159 switch (board) { 160 case BOARD_NCR5380: 161 if (ints[0] != 2 && ints[0] != 3) { 162 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); 163 return; 164 } 165 break; 166 case BOARD_NCR53C400: 167 if (ints[0] != 2) { 168 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); 169 return; 170 } 171 break; 172 case BOARD_NCR53C400A: 173 if (ints[0] != 2) { 174 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); 175 return; 176 } 177 break; 178 case BOARD_DTC3181E: 179 if (ints[0] != 2) { 180 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); 181 return; 182 } 183 break; 184 } 185 186 if (commandline_current < NO_OVERRIDES) { 187 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; 188 overrides[commandline_current].irq = ints[2]; 189 if (ints[0] == 3) 190 overrides[commandline_current].dma = ints[3]; 191 else 192 overrides[commandline_current].dma = DMA_NONE; 193 overrides[commandline_current].board = board; 194 ++commandline_current; 195 } 196 } 197 198 199 /** 200 * do_NCR53C80_setup - set up entry point 201 * @str: unused 202 * 203 * Setup function invoked at boot to parse the ncr5380= command 204 * line. 205 */ 206 207 static int __init do_NCR5380_setup(char *str) 208 { 209 int ints[10]; 210 211 get_options(str, ARRAY_SIZE(ints), ints); 212 internal_setup(BOARD_NCR5380, str, ints); 213 return 1; 214 } 215 216 /** 217 * do_NCR53C400_setup - set up entry point 218 * @str: unused 219 * @ints: integer parameters from kernel setup code 220 * 221 * Setup function invoked at boot to parse the ncr53c400= command 222 * line. 223 */ 224 225 static int __init do_NCR53C400_setup(char *str) 226 { 227 int ints[10]; 228 229 get_options(str, ARRAY_SIZE(ints), ints); 230 internal_setup(BOARD_NCR53C400, str, ints); 231 return 1; 232 } 233 234 /** 235 * do_NCR53C400A_setup - set up entry point 236 * @str: unused 237 * @ints: integer parameters from kernel setup code 238 * 239 * Setup function invoked at boot to parse the ncr53c400a= command 240 * line. 241 */ 242 243 static int __init do_NCR53C400A_setup(char *str) 244 { 245 int ints[10]; 246 247 get_options(str, ARRAY_SIZE(ints), ints); 248 internal_setup(BOARD_NCR53C400A, str, ints); 249 return 1; 250 } 251 252 /** 253 * do_DTC3181E_setup - set up entry point 254 * @str: unused 255 * @ints: integer parameters from kernel setup code 256 * 257 * Setup function invoked at boot to parse the dtc3181e= command 258 * line. 259 */ 260 261 static int __init do_DTC3181E_setup(char *str) 262 { 263 int ints[10]; 264 265 get_options(str, ARRAY_SIZE(ints), ints); 266 internal_setup(BOARD_DTC3181E, str, ints); 267 return 1; 268 } 269 270 #endif 271 272 /** 273 * generic_NCR5380_detect - look for NCR5380 controllers 274 * @tpnt: the scsi template 275 * 276 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E 277 * and DTC436(ISAPnP) controllers. If overrides have been set we use 278 * them. 279 * 280 * The caller supplied NCR5380_init function is invoked from here, before 281 * the interrupt line is taken. 282 * 283 * Locks: none 284 */ 285 286 int __init generic_NCR5380_detect(struct scsi_host_template * tpnt) 287 { 288 static int current_override = 0; 289 int count, i; 290 unsigned int *ports; 291 unsigned long region_size = 16; 292 static unsigned int __initdata ncr_53c400a_ports[] = { 293 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 294 }; 295 static unsigned int __initdata dtc_3181e_ports[] = { 296 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 297 }; 298 int flags = 0; 299 struct Scsi_Host *instance; 300 #ifdef CONFIG_SCSI_G_NCR5380_MEM 301 unsigned long base; 302 void __iomem *iomem; 303 #endif 304 305 if (ncr_irq != NCR_NOT_SET) 306 overrides[0].irq = ncr_irq; 307 if (ncr_dma != NCR_NOT_SET) 308 overrides[0].dma = ncr_dma; 309 if (ncr_addr != NCR_NOT_SET) 310 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; 311 if (ncr_5380 != NCR_NOT_SET) 312 overrides[0].board = BOARD_NCR5380; 313 else if (ncr_53c400 != NCR_NOT_SET) 314 overrides[0].board = BOARD_NCR53C400; 315 else if (ncr_53c400a != NCR_NOT_SET) 316 overrides[0].board = BOARD_NCR53C400A; 317 else if (dtc_3181e != NCR_NOT_SET) 318 overrides[0].board = BOARD_DTC3181E; 319 320 if (!current_override && isapnp_present()) { 321 struct pnp_dev *dev = NULL; 322 count = 0; 323 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { 324 if (count >= NO_OVERRIDES) 325 break; 326 if (pnp_device_attach(dev) < 0) { 327 printk(KERN_ERR "dtc436e probe: attach failed\n"); 328 continue; 329 } 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 } 353 354 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 CONFIG_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 CONFIG_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 CONFIG_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, 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 */ 495 496 const 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 */ 510 511 int 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, NULL); 518 NCR5380_exit(instance); 519 520 #ifndef CONFIG_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 */ 548 549 static int 550 generic_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 #if 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 psuedo DMA mode read from an NCR53C400 or equivalent 569 * controller 570 */ 571 572 static 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 CONFIG_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 CONFIG_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 CONFIG_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 CONFIG_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 psuedo DMA mode read from an NCR53C400 or equivalent 653 * controller 654 */ 655 656 static 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 CONFIG_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 CONFIG_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 CONFIG_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 CONFIG_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 , 750 751 static 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 } 757 758 static 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 */ 776 777 static 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 */ 802 803 static 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 extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE]; 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(dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int) dev->type] : "Unknown"); 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"); 941 942 943 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); 952 953 954 __setup("ncr5380=", do_NCR5380_setup); 955 __setup("ncr53c400=", do_NCR53C400_setup); 956 __setup("ncr53c400a=", do_NCR53C400A_setup); 957 __setup("dtc3181e=", do_DTC3181E_setup); 958