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 #define NO_OVERRIDES ARRAY_SIZE(overrides) 142 143 #ifndef MODULE 144 145 /** 146 * internal_setup - handle lilo command string override 147 * @board: BOARD_* identifier for the board 148 * @str: unused 149 * @ints: numeric parameters 150 * 151 * Do LILO command line initialization of the overrides array. Display 152 * errors when needed 153 * 154 * Locks: none 155 */ 156 157 static void __init internal_setup(int board, char *str, int *ints) 158 { 159 static int commandline_current = 0; 160 switch (board) { 161 case BOARD_NCR5380: 162 if (ints[0] != 2 && ints[0] != 3) { 163 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); 164 return; 165 } 166 break; 167 case BOARD_NCR53C400: 168 if (ints[0] != 2) { 169 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); 170 return; 171 } 172 break; 173 case BOARD_NCR53C400A: 174 if (ints[0] != 2) { 175 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); 176 return; 177 } 178 break; 179 case BOARD_DTC3181E: 180 if (ints[0] != 2) { 181 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); 182 return; 183 } 184 break; 185 } 186 187 if (commandline_current < NO_OVERRIDES) { 188 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; 189 overrides[commandline_current].irq = ints[2]; 190 if (ints[0] == 3) 191 overrides[commandline_current].dma = ints[3]; 192 else 193 overrides[commandline_current].dma = DMA_NONE; 194 overrides[commandline_current].board = board; 195 ++commandline_current; 196 } 197 } 198 199 200 /** 201 * do_NCR53C80_setup - set up entry point 202 * @str: unused 203 * 204 * Setup function invoked at boot to parse the ncr5380= command 205 * line. 206 */ 207 208 static int __init do_NCR5380_setup(char *str) 209 { 210 int ints[10]; 211 212 get_options(str, ARRAY_SIZE(ints), ints); 213 internal_setup(BOARD_NCR5380, str, ints); 214 return 1; 215 } 216 217 /** 218 * do_NCR53C400_setup - set up entry point 219 * @str: unused 220 * @ints: integer parameters from kernel setup code 221 * 222 * Setup function invoked at boot to parse the ncr53c400= command 223 * line. 224 */ 225 226 static int __init do_NCR53C400_setup(char *str) 227 { 228 int ints[10]; 229 230 get_options(str, ARRAY_SIZE(ints), ints); 231 internal_setup(BOARD_NCR53C400, str, ints); 232 return 1; 233 } 234 235 /** 236 * do_NCR53C400A_setup - set up entry point 237 * @str: unused 238 * @ints: integer parameters from kernel setup code 239 * 240 * Setup function invoked at boot to parse the ncr53c400a= command 241 * line. 242 */ 243 244 static int __init do_NCR53C400A_setup(char *str) 245 { 246 int ints[10]; 247 248 get_options(str, ARRAY_SIZE(ints), ints); 249 internal_setup(BOARD_NCR53C400A, str, ints); 250 return 1; 251 } 252 253 /** 254 * do_DTC3181E_setup - set up entry point 255 * @str: unused 256 * @ints: integer parameters from kernel setup code 257 * 258 * Setup function invoked at boot to parse the dtc3181e= command 259 * line. 260 */ 261 262 static int __init do_DTC3181E_setup(char *str) 263 { 264 int ints[10]; 265 266 get_options(str, ARRAY_SIZE(ints), ints); 267 internal_setup(BOARD_DTC3181E, str, ints); 268 return 1; 269 } 270 271 #endif 272 273 /** 274 * generic_NCR5380_detect - look for NCR5380 controllers 275 * @tpnt: the scsi template 276 * 277 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E 278 * and DTC436(ISAPnP) controllers. If overrides have been set we use 279 * them. 280 * 281 * The caller supplied NCR5380_init function is invoked from here, before 282 * the interrupt line is taken. 283 * 284 * Locks: none 285 */ 286 287 int __init generic_NCR5380_detect(struct scsi_host_template * tpnt) 288 { 289 static int current_override = 0; 290 int count, i; 291 unsigned int *ports; 292 unsigned long region_size = 16; 293 static unsigned int __initdata ncr_53c400a_ports[] = { 294 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 295 }; 296 static unsigned int __initdata dtc_3181e_ports[] = { 297 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 298 }; 299 int flags = 0; 300 struct Scsi_Host *instance; 301 #ifdef CONFIG_SCSI_G_NCR5380_MEM 302 unsigned long base; 303 void __iomem *iomem; 304 #endif 305 306 if (ncr_irq != NCR_NOT_SET) 307 overrides[0].irq = ncr_irq; 308 if (ncr_dma != NCR_NOT_SET) 309 overrides[0].dma = ncr_dma; 310 if (ncr_addr != NCR_NOT_SET) 311 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; 312 if (ncr_5380 != NCR_NOT_SET) 313 overrides[0].board = BOARD_NCR5380; 314 else if (ncr_53c400 != NCR_NOT_SET) 315 overrides[0].board = BOARD_NCR53C400; 316 else if (ncr_53c400a != NCR_NOT_SET) 317 overrides[0].board = BOARD_NCR53C400A; 318 else if (dtc_3181e != NCR_NOT_SET) 319 overrides[0].board = BOARD_DTC3181E; 320 321 if (!current_override && isapnp_present()) { 322 struct pnp_dev *dev = NULL; 323 count = 0; 324 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { 325 if (count >= NO_OVERRIDES) 326 break; 327 if (pnp_device_attach(dev) < 0) { 328 printk(KERN_ERR "dtc436e probe: attach failed\n"); 329 continue; 330 } 331 if (pnp_activate_dev(dev) < 0) { 332 printk(KERN_ERR "dtc436e probe: activate failed\n"); 333 pnp_device_detach(dev); 334 continue; 335 } 336 if (!pnp_port_valid(dev, 0)) { 337 printk(KERN_ERR "dtc436e probe: no valid port\n"); 338 pnp_device_detach(dev); 339 continue; 340 } 341 if (pnp_irq_valid(dev, 0)) 342 overrides[count].irq = pnp_irq(dev, 0); 343 else 344 overrides[count].irq = SCSI_IRQ_NONE; 345 if (pnp_dma_valid(dev, 0)) 346 overrides[count].dma = pnp_dma(dev, 0); 347 else 348 overrides[count].dma = DMA_NONE; 349 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); 350 overrides[count].board = BOARD_DTC3181E; 351 count++; 352 } 353 } 354 355 tpnt->proc_name = "g_NCR5380"; 356 357 for (count = 0; current_override < NO_OVERRIDES; ++current_override) { 358 if (!(overrides[current_override].NCR5380_map_name)) 359 continue; 360 361 ports = NULL; 362 switch (overrides[current_override].board) { 363 case BOARD_NCR5380: 364 flags = FLAG_NO_PSEUDO_DMA; 365 break; 366 case BOARD_NCR53C400: 367 flags = FLAG_NCR53C400; 368 break; 369 case BOARD_NCR53C400A: 370 flags = FLAG_NO_PSEUDO_DMA; 371 ports = ncr_53c400a_ports; 372 break; 373 case BOARD_DTC3181E: 374 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E; 375 ports = dtc_3181e_ports; 376 break; 377 } 378 379 #ifndef CONFIG_SCSI_G_NCR5380_MEM 380 if (ports) { 381 /* wakeup sequence for the NCR53C400A and DTC3181E */ 382 383 /* Disable the adapter and look for a free io port */ 384 outb(0x59, 0x779); 385 outb(0xb9, 0x379); 386 outb(0xc5, 0x379); 387 outb(0xae, 0x379); 388 outb(0xa6, 0x379); 389 outb(0x00, 0x379); 390 391 if (overrides[current_override].NCR5380_map_name != PORT_AUTO) 392 for (i = 0; ports[i]; i++) { 393 if (!request_region(ports[i], 16, "ncr53c80")) 394 continue; 395 if (overrides[current_override].NCR5380_map_name == ports[i]) 396 break; 397 release_region(ports[i], 16); 398 } else 399 for (i = 0; ports[i]; i++) { 400 if (!request_region(ports[i], 16, "ncr53c80")) 401 continue; 402 if (inb(ports[i]) == 0xff) 403 break; 404 release_region(ports[i], 16); 405 } 406 if (ports[i]) { 407 /* At this point we have our region reserved */ 408 outb(0x59, 0x779); 409 outb(0xb9, 0x379); 410 outb(0xc5, 0x379); 411 outb(0xae, 0x379); 412 outb(0xa6, 0x379); 413 outb(0x80 | i, 0x379); /* set io port to be used */ 414 outb(0xc0, ports[i] + 9); 415 if (inb(ports[i] + 9) != 0x80) 416 continue; 417 else 418 overrides[current_override].NCR5380_map_name = ports[i]; 419 } else 420 continue; 421 } 422 else 423 { 424 /* Not a 53C400A style setup - just grab */ 425 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) 426 continue; 427 region_size = NCR5380_region_size; 428 } 429 #else 430 base = overrides[current_override].NCR5380_map_name; 431 if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) 432 continue; 433 iomem = ioremap(base, NCR5380_region_size); 434 if (!iomem) { 435 release_mem_region(base, NCR5380_region_size); 436 continue; 437 } 438 #endif 439 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); 440 if (instance == NULL) { 441 #ifndef CONFIG_SCSI_G_NCR5380_MEM 442 release_region(overrides[current_override].NCR5380_map_name, region_size); 443 #else 444 iounmap(iomem); 445 release_mem_region(base, NCR5380_region_size); 446 #endif 447 continue; 448 } 449 450 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name; 451 #ifndef CONFIG_SCSI_G_NCR5380_MEM 452 instance->n_io_port = region_size; 453 #else 454 ((struct NCR5380_hostdata *)instance->hostdata).iomem = iomem; 455 #endif 456 457 NCR5380_init(instance, flags); 458 459 if (overrides[current_override].irq != IRQ_AUTO) 460 instance->irq = overrides[current_override].irq; 461 else 462 instance->irq = NCR5380_probe_irq(instance, 0xffff); 463 464 if (instance->irq != SCSI_IRQ_NONE) 465 if (request_irq(instance->irq, generic_NCR5380_intr, SA_INTERRUPT, "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, NULL); 519 NCR5380_exit(instance); 520 521 #ifndef CONFIG_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 #if 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 CONFIG_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 CONFIG_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 CONFIG_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 CONFIG_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 CONFIG_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 CONFIG_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 CONFIG_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 CONFIG_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 extern const char *const scsi_device_types[MAX_SCSI_DEVICE_CODE]; 816 #endif 817 818 NCR5380_setup(scsi_ptr); 819 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 820 821 spin_lock_irqsave(scsi_ptr->host_lock, flags); 822 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 823 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 824 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 825 #ifdef NCR53C400 826 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 827 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 828 # if NCR53C400_PSEUDO_DMA 829 PRINTP("NCR53C400 pseudo DMA used\n"); 830 # endif 831 #else 832 PRINTP("NO NCR53C400 driver extensions\n"); 833 #endif 834 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 835 if (scsi_ptr->irq == SCSI_IRQ_NONE) 836 PRINTP("no interrupt\n"); 837 else 838 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 839 840 #ifdef NCR5380_STATS 841 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 842 PRINTP("There are commands pending, transfer rates may be crud\n"); 843 if (hostdata->pendingr) 844 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 845 if (hostdata->pendingw) 846 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 847 if (hostdata->pendingr || hostdata->pendingw) 848 PRINTP("\n"); 849 shost_for_each_device(dev, scsi_ptr) { 850 unsigned long br = hostdata->bytes_read[dev->id]; 851 unsigned long bw = hostdata->bytes_write[dev->id]; 852 long tr = hostdata->time_read[dev->id] / HZ; 853 long tw = hostdata->time_write[dev->id] / HZ; 854 855 PRINTP(" T:%d %s " ANDP dev->id ANDP(dev->type < MAX_SCSI_DEVICE_CODE) ? scsi_device_types[(int) dev->type] : "Unknown"); 856 for (i = 0; i < 8; i++) 857 if (dev->vendor[i] >= 0x20) 858 *(buffer + (len++)) = dev->vendor[i]; 859 *(buffer + (len++)) = ' '; 860 for (i = 0; i < 16; i++) 861 if (dev->model[i] >= 0x20) 862 *(buffer + (len++)) = dev->model[i]; 863 *(buffer + (len++)) = ' '; 864 for (i = 0; i < 4; i++) 865 if (dev->rev[i] >= 0x20) 866 *(buffer + (len++)) = dev->rev[i]; 867 *(buffer + (len++)) = ' '; 868 869 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 870 if (tr) 871 PRINTP(" @ %5ld bps" ANDP br / tr); 872 873 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 874 if (tw) 875 PRINTP(" @ %5ld bps" ANDP bw / tw); 876 PRINTP("\n"); 877 } 878 #endif 879 880 status = NCR5380_read(STATUS_REG); 881 if (!(status & SR_REQ)) 882 PRINTP("REQ not asserted, phase unknown.\n"); 883 else { 884 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 885 PRINTP("Phase %s\n" ANDP phases[i].name); 886 } 887 888 if (!hostdata->connected) { 889 PRINTP("No currently connected command\n"); 890 } else { 891 len += sprint_Scsi_Cmnd(buffer, len, (Scsi_Cmnd *) hostdata->connected); 892 } 893 894 PRINTP("issue_queue\n"); 895 896 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 897 len += sprint_Scsi_Cmnd(buffer, len, ptr); 898 899 PRINTP("disconnected_queue\n"); 900 901 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 902 len += sprint_Scsi_Cmnd(buffer, len, ptr); 903 904 *start = buffer + offset; 905 len -= offset; 906 if (len > length) 907 len = length; 908 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 909 return len; 910 } 911 912 #undef PRINTP 913 #undef ANDP 914 915 static struct scsi_host_template driver_template = { 916 .proc_info = generic_NCR5380_proc_info, 917 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 918 .detect = generic_NCR5380_detect, 919 .release = generic_NCR5380_release_resources, 920 .info = generic_NCR5380_info, 921 .queuecommand = generic_NCR5380_queue_command, 922 .eh_abort_handler = generic_NCR5380_abort, 923 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 924 .bios_param = NCR5380_BIOSPARAM, 925 .can_queue = CAN_QUEUE, 926 .this_id = 7, 927 .sg_tablesize = SG_ALL, 928 .cmd_per_lun = CMD_PER_LUN, 929 .use_clustering = DISABLE_CLUSTERING, 930 }; 931 #include <linux/module.h> 932 #include "scsi_module.c" 933 934 module_param(ncr_irq, int, 0); 935 module_param(ncr_dma, int, 0); 936 module_param(ncr_addr, int, 0); 937 module_param(ncr_5380, int, 0); 938 module_param(ncr_53c400, int, 0); 939 module_param(ncr_53c400a, int, 0); 940 module_param(dtc_3181e, int, 0); 941 MODULE_LICENSE("GPL"); 942 943 944 static struct isapnp_device_id id_table[] __devinitdata = { 945 { 946 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 947 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 948 0}, 949 {0} 950 }; 951 952 MODULE_DEVICE_TABLE(isapnp, id_table); 953 954 955 __setup("ncr5380=", do_NCR5380_setup); 956 __setup("ncr53c400=", do_NCR53C400_setup); 957 __setup("ncr53c400a=", do_NCR53C400A_setup); 958 __setup("dtc3181e=", do_DTC3181E_setup); 959