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, i; 289 unsigned int *ports; 290 unsigned long region_size = 16; 291 static unsigned int __initdata ncr_53c400a_ports[] = { 292 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 293 }; 294 static unsigned int __initdata dtc_3181e_ports[] = { 295 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 296 }; 297 int flags = 0; 298 struct Scsi_Host *instance; 299 #ifdef CONFIG_SCSI_G_NCR5380_MEM 300 unsigned long base; 301 void __iomem *iomem; 302 #endif 303 304 if (ncr_irq != NCR_NOT_SET) 305 overrides[0].irq = ncr_irq; 306 if (ncr_dma != NCR_NOT_SET) 307 overrides[0].dma = ncr_dma; 308 if (ncr_addr != NCR_NOT_SET) 309 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; 310 if (ncr_5380 != NCR_NOT_SET) 311 overrides[0].board = BOARD_NCR5380; 312 else if (ncr_53c400 != NCR_NOT_SET) 313 overrides[0].board = BOARD_NCR53C400; 314 else if (ncr_53c400a != NCR_NOT_SET) 315 overrides[0].board = BOARD_NCR53C400A; 316 else if (dtc_3181e != NCR_NOT_SET) 317 overrides[0].board = BOARD_DTC3181E; 318 319 if (!current_override && isapnp_present()) { 320 struct pnp_dev *dev = NULL; 321 count = 0; 322 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { 323 if (count >= NO_OVERRIDES) 324 break; 325 if (pnp_device_attach(dev) < 0) { 326 printk(KERN_ERR "dtc436e probe: attach failed\n"); 327 continue; 328 } 329 if (pnp_activate_dev(dev) < 0) { 330 printk(KERN_ERR "dtc436e probe: activate failed\n"); 331 pnp_device_detach(dev); 332 continue; 333 } 334 if (!pnp_port_valid(dev, 0)) { 335 printk(KERN_ERR "dtc436e probe: no valid port\n"); 336 pnp_device_detach(dev); 337 continue; 338 } 339 if (pnp_irq_valid(dev, 0)) 340 overrides[count].irq = pnp_irq(dev, 0); 341 else 342 overrides[count].irq = SCSI_IRQ_NONE; 343 if (pnp_dma_valid(dev, 0)) 344 overrides[count].dma = pnp_dma(dev, 0); 345 else 346 overrides[count].dma = DMA_NONE; 347 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); 348 overrides[count].board = BOARD_DTC3181E; 349 count++; 350 } 351 } 352 353 tpnt->proc_name = "g_NCR5380"; 354 355 for (count = 0; current_override < NO_OVERRIDES; ++current_override) { 356 if (!(overrides[current_override].NCR5380_map_name)) 357 continue; 358 359 ports = NULL; 360 switch (overrides[current_override].board) { 361 case BOARD_NCR5380: 362 flags = FLAG_NO_PSEUDO_DMA; 363 break; 364 case BOARD_NCR53C400: 365 flags = FLAG_NCR53C400; 366 break; 367 case BOARD_NCR53C400A: 368 flags = FLAG_NO_PSEUDO_DMA; 369 ports = ncr_53c400a_ports; 370 break; 371 case BOARD_DTC3181E: 372 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E; 373 ports = dtc_3181e_ports; 374 break; 375 } 376 377 #ifndef CONFIG_SCSI_G_NCR5380_MEM 378 if (ports) { 379 /* wakeup sequence for the NCR53C400A and DTC3181E */ 380 381 /* Disable the adapter and look for a free io port */ 382 outb(0x59, 0x779); 383 outb(0xb9, 0x379); 384 outb(0xc5, 0x379); 385 outb(0xae, 0x379); 386 outb(0xa6, 0x379); 387 outb(0x00, 0x379); 388 389 if (overrides[current_override].NCR5380_map_name != PORT_AUTO) 390 for (i = 0; ports[i]; i++) { 391 if (!request_region(ports[i], 16, "ncr53c80")) 392 continue; 393 if (overrides[current_override].NCR5380_map_name == ports[i]) 394 break; 395 release_region(ports[i], 16); 396 } else 397 for (i = 0; ports[i]; i++) { 398 if (!request_region(ports[i], 16, "ncr53c80")) 399 continue; 400 if (inb(ports[i]) == 0xff) 401 break; 402 release_region(ports[i], 16); 403 } 404 if (ports[i]) { 405 /* At this point we have our region reserved */ 406 outb(0x59, 0x779); 407 outb(0xb9, 0x379); 408 outb(0xc5, 0x379); 409 outb(0xae, 0x379); 410 outb(0xa6, 0x379); 411 outb(0x80 | i, 0x379); /* set io port to be used */ 412 outb(0xc0, ports[i] + 9); 413 if (inb(ports[i] + 9) != 0x80) 414 continue; 415 else 416 overrides[current_override].NCR5380_map_name = ports[i]; 417 } else 418 continue; 419 } 420 else 421 { 422 /* Not a 53C400A style setup - just grab */ 423 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) 424 continue; 425 region_size = NCR5380_region_size; 426 } 427 #else 428 base = overrides[current_override].NCR5380_map_name; 429 if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) 430 continue; 431 iomem = ioremap(base, NCR5380_region_size); 432 if (!iomem) { 433 release_mem_region(base, NCR5380_region_size); 434 continue; 435 } 436 #endif 437 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); 438 if (instance == NULL) { 439 #ifndef CONFIG_SCSI_G_NCR5380_MEM 440 release_region(overrides[current_override].NCR5380_map_name, region_size); 441 #else 442 iounmap(iomem); 443 release_mem_region(base, NCR5380_region_size); 444 #endif 445 continue; 446 } 447 448 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name; 449 #ifndef CONFIG_SCSI_G_NCR5380_MEM 450 instance->n_io_port = region_size; 451 #else 452 ((struct NCR5380_hostdata *)instance->hostdata).iomem = iomem; 453 #endif 454 455 NCR5380_init(instance, flags); 456 457 if (overrides[current_override].irq != IRQ_AUTO) 458 instance->irq = overrides[current_override].irq; 459 else 460 instance->irq = NCR5380_probe_irq(instance, 0xffff); 461 462 if (instance->irq != SCSI_IRQ_NONE) 463 if (request_irq(instance->irq, generic_NCR5380_intr, IRQF_DISABLED, "NCR5380", instance)) { 464 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); 465 instance->irq = SCSI_IRQ_NONE; 466 } 467 468 if (instance->irq == SCSI_IRQ_NONE) { 469 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); 470 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); 471 } 472 473 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name); 474 if (instance->irq == SCSI_IRQ_NONE) 475 printk(" interrupts disabled"); 476 else 477 printk(" irq %d", instance->irq); 478 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE); 479 NCR5380_print_options(instance); 480 printk("\n"); 481 482 ++current_override; 483 ++count; 484 } 485 return count; 486 } 487 488 /** 489 * generic_NCR5380_info - reporting string 490 * @host: NCR5380 to report on 491 * 492 * Report driver information for the NCR5380 493 */ 494 495 const char *generic_NCR5380_info(struct Scsi_Host *host) 496 { 497 static const char string[] = "Generic NCR5380/53C400 Driver"; 498 return string; 499 } 500 501 /** 502 * generic_NCR5380_release_resources - free resources 503 * @instance: host adapter to clean up 504 * 505 * Free the generic interface resources from this adapter. 506 * 507 * Locks: none 508 */ 509 510 int generic_NCR5380_release_resources(struct Scsi_Host *instance) 511 { 512 NCR5380_local_declare(); 513 NCR5380_setup(instance); 514 515 if (instance->irq != SCSI_IRQ_NONE) 516 free_irq(instance->irq, NULL); 517 NCR5380_exit(instance); 518 519 #ifndef CONFIG_SCSI_G_NCR5380_MEM 520 release_region(instance->NCR5380_instance_name, instance->n_io_port); 521 #else 522 iounmap(((struct NCR5380_hostdata *)instance->hostdata).iomem); 523 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size); 524 #endif 525 526 527 return 0; 528 } 529 530 #ifdef BIOSPARAM 531 /** 532 * generic_NCR5380_biosparam 533 * @disk: disk to compute geometry for 534 * @dev: device identifier for this disk 535 * @ip: sizes to fill in 536 * 537 * Generates a BIOS / DOS compatible H-C-S mapping for the specified 538 * device / size. 539 * 540 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone 541 * using hard disks on a trantor should verify that this mapping 542 * corresponds to that used by the BIOS / ASPI driver by running the linux 543 * fdisk program and matching the H_C_S coordinates to what DOS uses. 544 * 545 * Locks: none 546 */ 547 548 static int 549 generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, 550 sector_t capacity, int *ip) 551 { 552 ip[0] = 64; 553 ip[1] = 32; 554 ip[2] = capacity >> 11; 555 return 0; 556 } 557 #endif 558 559 #ifdef NCR53C400_PSEUDO_DMA 560 561 /** 562 * NCR5380_pread - pseudo DMA read 563 * @instance: adapter to read from 564 * @dst: buffer to read into 565 * @len: buffer length 566 * 567 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 568 * controller 569 */ 570 571 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) 572 { 573 int blocks = len / 128; 574 int start = 0; 575 int bl; 576 577 NCR5380_local_declare(); 578 NCR5380_setup(instance); 579 580 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); 581 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 582 while (1) { 583 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 584 break; 585 } 586 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 587 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 588 return -1; 589 } 590 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); 591 592 #ifndef CONFIG_SCSI_G_NCR5380_MEM 593 { 594 int i; 595 for (i = 0; i < 128; i++) 596 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 597 } 598 #else 599 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 600 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 601 #endif 602 start += 128; 603 blocks--; 604 } 605 606 if (blocks) { 607 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 608 { 609 // FIXME - no timeout 610 } 611 612 #ifndef CONFIG_SCSI_G_NCR5380_MEM 613 { 614 int i; 615 for (i = 0; i < 128; i++) 616 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 617 } 618 #else 619 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 620 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 621 #endif 622 start += 128; 623 blocks--; 624 } 625 626 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 627 printk("53C400r: no 53C80 gated irq after transfer"); 628 629 #if 0 630 /* 631 * DON'T DO THIS - THEY NEVER ARRIVE! 632 */ 633 printk("53C400r: Waiting for 53C80 registers\n"); 634 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) 635 ; 636 #endif 637 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) 638 printk(KERN_ERR "53C400r: no end dma signal\n"); 639 640 NCR5380_write(MODE_REG, MR_BASE); 641 NCR5380_read(RESET_PARITY_INTERRUPT_REG); 642 return 0; 643 } 644 645 /** 646 * NCR5380_write - pseudo DMA write 647 * @instance: adapter to read from 648 * @dst: buffer to read into 649 * @len: buffer length 650 * 651 * Perform a psuedo DMA mode read from an NCR53C400 or equivalent 652 * controller 653 */ 654 655 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) 656 { 657 int blocks = len / 128; 658 int start = 0; 659 int bl; 660 int i; 661 662 NCR5380_local_declare(); 663 NCR5380_setup(instance); 664 665 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); 666 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 667 while (1) { 668 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 669 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 670 return -1; 671 } 672 673 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 674 break; 675 } 676 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 677 ; // FIXME - timeout 678 #ifndef CONFIG_SCSI_G_NCR5380_MEM 679 { 680 for (i = 0; i < 128; i++) 681 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 682 } 683 #else 684 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 685 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 686 #endif 687 start += 128; 688 blocks--; 689 } 690 if (blocks) { 691 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 692 ; // FIXME - no timeout 693 694 #ifndef CONFIG_SCSI_G_NCR5380_MEM 695 { 696 for (i = 0; i < 128; i++) 697 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 698 } 699 #else 700 /* implies CONFIG_SCSI_G_NCR5380_MEM */ 701 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 702 #endif 703 start += 128; 704 blocks--; 705 } 706 707 #if 0 708 printk("53C400w: waiting for registers to be available\n"); 709 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); 710 printk("53C400w: Got em\n"); 711 #endif 712 713 /* Let's wait for this instead - could be ugly */ 714 /* All documentation says to check for this. Maybe my hardware is too 715 * fast. Waiting for it seems to work fine! KLL 716 */ 717 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 718 ; // FIXME - no timeout 719 720 /* 721 * I know. i is certainly != 0 here but the loop is new. See previous 722 * comment. 723 */ 724 if (i) { 725 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) 726 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); 727 } else 728 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); 729 730 #if 0 731 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { 732 printk(KERN_ERR "53C400w: no end dma signal\n"); 733 } 734 #endif 735 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) 736 ; // TIMEOUT 737 return 0; 738 } 739 #endif /* PSEUDO_DMA */ 740 741 /* 742 * Include the NCR5380 core code that we build our driver around 743 */ 744 745 #include "NCR5380.c" 746 747 #define PRINTP(x) len += sprintf(buffer+len, x) 748 #define ANDP , 749 750 static int sprint_opcode(char *buffer, int len, int opcode) 751 { 752 int start = len; 753 PRINTP("0x%02x " ANDP opcode); 754 return len - start; 755 } 756 757 static int sprint_command(char *buffer, int len, unsigned char *command) 758 { 759 int i, s, start = len; 760 len += sprint_opcode(buffer, len, command[0]); 761 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) 762 PRINTP("%02x " ANDP command[i]); 763 PRINTP("\n"); 764 return len - start; 765 } 766 767 /** 768 * sprintf_Scsi_Cmnd - print a scsi command 769 * @buffer: buffr to print into 770 * @len: buffer length 771 * @cmd: SCSI command block 772 * 773 * Print out the target and command data in hex 774 */ 775 776 static int sprint_Scsi_Cmnd(char *buffer, int len, Scsi_Cmnd * cmd) 777 { 778 int start = len; 779 PRINTP("host number %d destination target %d, lun %d\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); 780 PRINTP(" command = "); 781 len += sprint_command(buffer, len, cmd->cmnd); 782 return len - start; 783 } 784 785 /** 786 * generic_NCR5380_proc_info - /proc for NCR5380 driver 787 * @buffer: buffer to print into 788 * @start: start position 789 * @offset: offset into buffer 790 * @len: length 791 * @hostno: instance to affect 792 * @inout: read/write 793 * 794 * Provide the procfs information for the 5380 controller. We fill 795 * this with useful debugging information including the commands 796 * being executed, disconnected command queue and the statistical 797 * data 798 * 799 * Locks: global cli/lock for queue walk 800 */ 801 802 static int generic_NCR5380_proc_info(struct Scsi_Host *scsi_ptr, char *buffer, char **start, off_t offset, int length, int inout) 803 { 804 int len = 0; 805 NCR5380_local_declare(); 806 unsigned long flags; 807 unsigned char status; 808 int i; 809 Scsi_Cmnd *ptr; 810 struct NCR5380_hostdata *hostdata; 811 #ifdef NCR5380_STATS 812 struct scsi_device *dev; 813 #endif 814 815 NCR5380_setup(scsi_ptr); 816 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 817 818 spin_lock_irqsave(scsi_ptr->host_lock, flags); 819 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 820 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 821 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 822 #ifdef NCR53C400 823 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 824 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 825 # if NCR53C400_PSEUDO_DMA 826 PRINTP("NCR53C400 pseudo DMA used\n"); 827 # endif 828 #else 829 PRINTP("NO NCR53C400 driver extensions\n"); 830 #endif 831 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 832 if (scsi_ptr->irq == SCSI_IRQ_NONE) 833 PRINTP("no interrupt\n"); 834 else 835 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 836 837 #ifdef NCR5380_STATS 838 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 839 PRINTP("There are commands pending, transfer rates may be crud\n"); 840 if (hostdata->pendingr) 841 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 842 if (hostdata->pendingw) 843 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 844 if (hostdata->pendingr || hostdata->pendingw) 845 PRINTP("\n"); 846 shost_for_each_device(dev, scsi_ptr) { 847 unsigned long br = hostdata->bytes_read[dev->id]; 848 unsigned long bw = hostdata->bytes_write[dev->id]; 849 long tr = hostdata->time_read[dev->id] / HZ; 850 long tw = hostdata->time_write[dev->id] / HZ; 851 852 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type)); 853 for (i = 0; i < 8; i++) 854 if (dev->vendor[i] >= 0x20) 855 *(buffer + (len++)) = dev->vendor[i]; 856 *(buffer + (len++)) = ' '; 857 for (i = 0; i < 16; i++) 858 if (dev->model[i] >= 0x20) 859 *(buffer + (len++)) = dev->model[i]; 860 *(buffer + (len++)) = ' '; 861 for (i = 0; i < 4; i++) 862 if (dev->rev[i] >= 0x20) 863 *(buffer + (len++)) = dev->rev[i]; 864 *(buffer + (len++)) = ' '; 865 866 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 867 if (tr) 868 PRINTP(" @ %5ld bps" ANDP br / tr); 869 870 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 871 if (tw) 872 PRINTP(" @ %5ld bps" ANDP bw / tw); 873 PRINTP("\n"); 874 } 875 #endif 876 877 status = NCR5380_read(STATUS_REG); 878 if (!(status & SR_REQ)) 879 PRINTP("REQ not asserted, phase unknown.\n"); 880 else { 881 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 882 PRINTP("Phase %s\n" ANDP phases[i].name); 883 } 884 885 if (!hostdata->connected) { 886 PRINTP("No currently connected command\n"); 887 } else { 888 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected); 889 } 890 891 PRINTP("issue_queue\n"); 892 893 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 894 len += sprint_Scsi_Cmnd(buffer, len, ptr); 895 896 PRINTP("disconnected_queue\n"); 897 898 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 899 len += sprint_Scsi_Cmnd(buffer, len, ptr); 900 901 *start = buffer + offset; 902 len -= offset; 903 if (len > length) 904 len = length; 905 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 906 return len; 907 } 908 909 #undef PRINTP 910 #undef ANDP 911 912 static struct scsi_host_template driver_template = { 913 .proc_info = generic_NCR5380_proc_info, 914 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 915 .detect = generic_NCR5380_detect, 916 .release = generic_NCR5380_release_resources, 917 .info = generic_NCR5380_info, 918 .queuecommand = generic_NCR5380_queue_command, 919 .eh_abort_handler = generic_NCR5380_abort, 920 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 921 .bios_param = NCR5380_BIOSPARAM, 922 .can_queue = CAN_QUEUE, 923 .this_id = 7, 924 .sg_tablesize = SG_ALL, 925 .cmd_per_lun = CMD_PER_LUN, 926 .use_clustering = DISABLE_CLUSTERING, 927 }; 928 #include <linux/module.h> 929 #include "scsi_module.c" 930 931 module_param(ncr_irq, int, 0); 932 module_param(ncr_dma, int, 0); 933 module_param(ncr_addr, int, 0); 934 module_param(ncr_5380, int, 0); 935 module_param(ncr_53c400, int, 0); 936 module_param(ncr_53c400a, int, 0); 937 module_param(dtc_3181e, int, 0); 938 MODULE_LICENSE("GPL"); 939 940 941 static struct isapnp_device_id id_table[] __devinitdata = { 942 { 943 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 944 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 945 0}, 946 {0} 947 }; 948 949 MODULE_DEVICE_TABLE(isapnp, id_table); 950 951 952 __setup("ncr5380=", do_NCR5380_setup); 953 __setup("ncr53c400=", do_NCR53C400_setup); 954 __setup("ncr53c400a=", do_NCR53C400A_setup); 955 __setup("dtc3181e=", do_DTC3181E_setup); 956