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 #include <linux/config.h> 95 96 #ifdef CONFIG_SCSI_GENERIC_NCR53C400 97 #define NCR53C400_PSEUDO_DMA 1 98 #define PSEUDO_DMA 99 #define NCR53C400 100 #define NCR5380_STATS 101 #undef NCR5380_STAT_LIMIT 102 #endif 103 104 #include <asm/system.h> 105 #include <asm/io.h> 106 #include <linux/signal.h> 107 #include <linux/sched.h> 108 #include <linux/blkdev.h> 109 #include "scsi.h" 110 #include <scsi/scsi_host.h> 111 #include "g_NCR5380.h" 112 #include "NCR5380.h" 113 #include <linux/stat.h> 114 #include <linux/init.h> 115 #include <linux/ioport.h> 116 #include <linux/isapnp.h> 117 #include <linux/delay.h> 118 #include <linux/interrupt.h> 119 120 #define NCR_NOT_SET 0 121 static int ncr_irq = NCR_NOT_SET; 122 static int ncr_dma = NCR_NOT_SET; 123 static int ncr_addr = NCR_NOT_SET; 124 static int ncr_5380 = NCR_NOT_SET; 125 static int ncr_53c400 = NCR_NOT_SET; 126 static int ncr_53c400a = NCR_NOT_SET; 127 static int dtc_3181e = NCR_NOT_SET; 128 129 static struct override { 130 NCR5380_map_type NCR5380_map_name; 131 int irq; 132 int dma; 133 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ 134 } overrides 135 #ifdef GENERIC_NCR5380_OVERRIDE 136 [] __initdata = GENERIC_NCR5380_OVERRIDE; 137 #else 138 [1] __initdata = { { 0,},}; 139 #endif 140 141 142 #define NO_OVERRIDES (sizeof(overrides) / sizeof(struct override)) 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 */ 157 158 static 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 */ 208 209 static int __init do_NCR5380_setup(char *str) 210 { 211 int ints[10]; 212 213 get_options(str, sizeof(ints) / sizeof(int), 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 */ 226 227 static int __init do_NCR53C400_setup(char *str) 228 { 229 int ints[10]; 230 231 get_options(str, sizeof(ints) / sizeof(int), 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 */ 244 245 static int __init do_NCR53C400A_setup(char *str) 246 { 247 int ints[10]; 248 249 get_options(str, sizeof(ints) / sizeof(int), 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 */ 262 263 static int __init do_DTC3181E_setup(char *str) 264 { 265 int ints[10]; 266 267 get_options(str, sizeof(ints) / sizeof(int), 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 */ 287 288 int __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, SA_INTERRUPT, "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 */ 497 498 const 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 */ 512 513 int 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 /** 535 * generic_NCR5380_biosparam 536 * @disk: disk to compute geometry for 537 * @dev: device identifier for this disk 538 * @ip: sizes to fill in 539 * 540 * Generates a BIOS / DOS compatible H-C-S mapping for the specified 541 * device / size. 542 * 543 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone 544 * using hard disks on a trantor should verify that this mapping 545 * corresponds to that used by the BIOS / ASPI driver by running the linux 546 * fdisk program and matching the H_C_S coordinates to what DOS uses. 547 * 548 * Locks: none 549 */ 550 551 static int 552 generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, 553 sector_t capacity, int *ip) 554 { 555 ip[0] = 64; 556 ip[1] = 32; 557 ip[2] = capacity >> 11; 558 return 0; 559 } 560 #endif 561 562 #if NCR53C400_PSEUDO_DMA 563 564 /** 565 * NCR5380_pread - pseudo DMA read 566 * @instance: adapter to read from 567 * @dst: buffer to read into 568 * @len: buffer length 569 * 570 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 571 * controller 572 */ 573 574 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) 575 { 576 int blocks = len / 128; 577 int start = 0; 578 int bl; 579 580 NCR5380_local_declare(); 581 NCR5380_setup(instance); 582 583 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); 584 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 585 while (1) { 586 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 587 break; 588 } 589 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 590 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 591 return -1; 592 } 593 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); 594 595 #ifndef CONFIG_SCSI_G_NCR5380_MEM 596 { 597 int i; 598 for (i = 0; i < 128; i++) 599 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 600 } 601 #else 602 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 603 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 604 #endif 605 start += 128; 606 blocks--; 607 } 608 609 if (blocks) { 610 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 611 { 612 // FIXME - no timeout 613 } 614 615 #ifndef CONFIG_SCSI_G_NCR5380_MEM 616 { 617 int i; 618 for (i = 0; i < 128; i++) 619 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 620 } 621 #else 622 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 623 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 624 #endif 625 start += 128; 626 blocks--; 627 } 628 629 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 630 printk("53C400r: no 53C80 gated irq after transfer"); 631 632 #if 0 633 /* 634 * DON'T DO THIS - THEY NEVER ARRIVE! 635 */ 636 printk("53C400r: Waiting for 53C80 registers\n"); 637 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) 638 ; 639 #endif 640 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) 641 printk(KERN_ERR "53C400r: no end dma signal\n"); 642 643 NCR5380_write(MODE_REG, MR_BASE); 644 NCR5380_read(RESET_PARITY_INTERRUPT_REG); 645 return 0; 646 } 647 648 /** 649 * NCR5380_write - pseudo DMA write 650 * @instance: adapter to read from 651 * @dst: buffer to read into 652 * @len: buffer length 653 * 654 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 655 * controller 656 */ 657 658 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) 659 { 660 int blocks = len / 128; 661 int start = 0; 662 int bl; 663 int i; 664 665 NCR5380_local_declare(); 666 NCR5380_setup(instance); 667 668 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); 669 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 670 while (1) { 671 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 672 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 673 return -1; 674 } 675 676 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 677 break; 678 } 679 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 680 ; // FIXME - timeout 681 #ifndef CONFIG_SCSI_G_NCR5380_MEM 682 { 683 for (i = 0; i < 128; i++) 684 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 685 } 686 #else 687 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 688 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 689 #endif 690 start += 128; 691 blocks--; 692 } 693 if (blocks) { 694 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 695 ; // FIXME - no timeout 696 697 #ifndef CONFIG_SCSI_G_NCR5380_MEM 698 { 699 for (i = 0; i < 128; i++) 700 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 701 } 702 #else 703 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 704 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 705 #endif 706 start += 128; 707 blocks--; 708 } 709 710 #if 0 711 printk("53C400w: waiting for registers to be available\n"); 712 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); 713 printk("53C400w: Got em\n"); 714 #endif 715 716 /* Let's wait for this instead - could be ugly */ 717 /* All documentation says to check for this. Maybe my hardware is too 718 * fast. Waiting for it seems to work fine! KLL 719 */ 720 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 721 ; // FIXME - no timeout 722 723 /* 724 * I know. i is certainly != 0 here but the loop is new. See previous 725 * comment. 726 */ 727 if (i) { 728 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) 729 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); 730 } else 731 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); 732 733 #if 0 734 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { 735 printk(KERN_ERR "53C400w: no end dma signal\n"); 736 } 737 #endif 738 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) 739 ; // TIMEOUT 740 return 0; 741 } 742 #endif /* PSEUDO_DMA */ 743 744 /* 745 * Include the NCR5380 core code that we build our driver around 746 */ 747 748 #include "NCR5380.c" 749 750 #define PRINTP(x) len += sprintf(buffer+len, x) 751 #define ANDP , 752 753 static int sprint_opcode(char *buffer, int len, int opcode) 754 { 755 int start = len; 756 PRINTP("0x%02x " ANDP opcode); 757 return len - start; 758 } 759 760 static int sprint_command(char *buffer, int len, unsigned char *command) 761 { 762 int i, s, start = len; 763 len += sprint_opcode(buffer, len, command[0]); 764 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) 765 PRINTP("%02x " ANDP command[i]); 766 PRINTP("\n"); 767 return len - start; 768 } 769 770 /** 771 * sprintf_Scsi_Cmnd - print a scsi command 772 * @buffer: buffr to print into 773 * @len: buffer length 774 * @cmd: SCSI command block 775 * 776 * Print out the target and command data in hex 777 */ 778 779 static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd) 780 { 781 int start = len; 782 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); 783 PRINTP(" command = "); 784 len += sprint_command(buffer, len, cmd->cmnd); 785 return len - start; 786 } 787 788 /** 789 * generic_NCR5380_proc_info - /proc for NCR5380 driver 790 * @buffer: buffer to print into 791 * @start: start position 792 * @offset: offset into buffer 793 * @len: length 794 * @hostno: instance to affect 795 * @inout: read/write 796 * 797 * Provide the procfs information for the 5380 controller. We fill 798 * this with useful debugging information including the commands 799 * being executed, disconnected command queue and the statistical 800 * data 801 * 802 * Locks: global cli/lock for queue walk 803 */ 804 805 static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout) 806 { 807 int len = 0; 808 NCR5380_local_declare(); 809 unsigned long flags; 810 unsigned char status; 811 int i; 812 Scsi_Cmnd *ptr; 813 struct NCR5380_hostdata *hostdata; 814 #ifdef NCR5380_STATS 815 struct scsi_device *dev; 816 extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE]; 817 #endif 818 819 NCR5380_setup(scsi_ptr); 820 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 821 822 spin_lock_irqsave(scsi_ptr->host_lock, flags); 823 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 824 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 825 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 826 #ifdef NCR53C400 827 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 828 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 829 # if NCR53C400_PSEUDO_DMA 830 PRINTP("NCR53C400 pseudo DMA used\n"); 831 # endif 832 #else 833 PRINTP("NO NCR53C400 driver extensions\n"); 834 #endif 835 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 836 if (scsi_ptr->irq == SCSI_IRQ_NONE) 837 PRINTP("no interrupt\n"); 838 else 839 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 840 841 #ifdef NCR5380_STATS 842 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 843 PRINTP("There are commands pending, transfer rates may be crud\n"); 844 if (hostdata->pendingr) 845 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 846 if (hostdata->pendingw) 847 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 848 if (hostdata->pendingr || hostdata->pendingw) 849 PRINTP("\n"); 850 shost_for_each_device(dev, scsi_ptr) { 851 unsigned long br = hostdata->bytes_read[dev->id]; 852 unsigned long bw = hostdata->bytes_write[dev->id]; 853 long tr = hostdata->time_read[dev->id] / HZ; 854 long tw = hostdata->time_write[dev->id] / HZ; 855 856 PRINTP(" T:%d %s " ANDP dev->id ANDP(dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int) dev->type] : "Unknown"); 857 for (i = 0; i < 8; i++) 858 if (dev->vendor[i] >= 0x20) 859 *(buffer + (len++)) = dev->vendor[i]; 860 *(buffer + (len++)) = ' '; 861 for (i = 0; i < 16; i++) 862 if (dev->model[i] >= 0x20) 863 *(buffer + (len++)) = dev->model[i]; 864 *(buffer + (len++)) = ' '; 865 for (i = 0; i < 4; i++) 866 if (dev->rev[i] >= 0x20) 867 *(buffer + (len++)) = dev->rev[i]; 868 *(buffer + (len++)) = ' '; 869 870 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 871 if (tr) 872 PRINTP(" @ %5ld bps" ANDP br / tr); 873 874 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 875 if (tw) 876 PRINTP(" @ %5ld bps" ANDP bw / tw); 877 PRINTP("\n"); 878 } 879 #endif 880 881 status = NCR5380_read(STATUS_REG); 882 if (!(status & SR_REQ)) 883 PRINTP("REQ not asserted, phase unknown.\n"); 884 else { 885 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 886 PRINTP("Phase %s\n" ANDP phases[i].name); 887 } 888 889 if (!hostdata->connected) { 890 PRINTP("No currently connected command\n"); 891 } else { 892 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected); 893 } 894 895 PRINTP("issue_queue\n"); 896 897 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 898 len += sprint_Scsi_Cmnd(buffer, len, ptr); 899 900 PRINTP("disconnected_queue\n"); 901 902 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 903 len += sprint_Scsi_Cmnd(buffer, len, ptr); 904 905 *start = buffer + offset; 906 len -= offset; 907 if (len > length) 908 len = length; 909 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 910 return len; 911 } 912 913 #undef PRINTP 914 #undef ANDP 915 916 static struct scsi_host_template driver_template = { 917 .proc_info = generic_NCR5380_proc_info, 918 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 919 .detect = generic_NCR5380_detect, 920 .release = generic_NCR5380_release_resources, 921 .info = generic_NCR5380_info, 922 .queuecommand = generic_NCR5380_queue_command, 923 .eh_abort_handler = generic_NCR5380_abort, 924 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 925 .bios_param = NCR5380_BIOSPARAM, 926 .can_queue = CAN_QUEUE, 927 .this_id = 7, 928 .sg_tablesize = SG_ALL, 929 .cmd_per_lun = CMD_PER_LUN, 930 .use_clustering = DISABLE_CLUSTERING, 931 }; 932 #include <linux/module.h> 933 #include "scsi_module.c" 934 935 module_param(ncr_irq, int, 0); 936 module_param(ncr_dma, int, 0); 937 module_param(ncr_addr, int, 0); 938 module_param(ncr_5380, int, 0); 939 module_param(ncr_53c400, int, 0); 940 module_param(ncr_53c400a, int, 0); 941 module_param(dtc_3181e, int, 0); 942 MODULE_LICENSE("GPL"); 943 944 945 static struct isapnp_device_id id_table[] __devinitdata = { 946 { 947 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 948 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 949 0}, 950 {0} 951 }; 952 953 MODULE_DEVICE_TABLE(isapnp, id_table); 954 955 956 __setup("ncr5380=", do_NCR5380_setup); 957 __setup("ncr53c400=", do_NCR53C400_setup); 958 __setup("ncr53c400a=", do_NCR53C400A_setup); 959 __setup("dtc3181e=", do_DTC3181E_setup); 960