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 /* settings for DTC3181E card with only Mustek scanner attached */ 82 #define USLEEP 83 #define USLEEP_POLL 1 84 #define USLEEP_SLEEP 20 85 #define USLEEP_WAITLONG 500 86 87 #define AUTOPROBE_IRQ 88 #define AUTOSENSE 89 90 91 #ifdef CONFIG_SCSI_GENERIC_NCR53C400 92 #define NCR53C400_PSEUDO_DMA 1 93 #define PSEUDO_DMA 94 #define NCR53C400 95 #define NCR5380_STATS 96 #undef NCR5380_STAT_LIMIT 97 #endif 98 99 #include <asm/io.h> 100 #include <linux/signal.h> 101 #include <linux/blkdev.h> 102 #include "scsi.h" 103 #include <scsi/scsi_host.h> 104 #include "g_NCR5380.h" 105 #include "NCR5380.h" 106 #include <linux/stat.h> 107 #include <linux/init.h> 108 #include <linux/ioport.h> 109 #include <linux/isapnp.h> 110 #include <linux/delay.h> 111 #include <linux/interrupt.h> 112 113 #define NCR_NOT_SET 0 114 static int ncr_irq = NCR_NOT_SET; 115 static int ncr_dma = NCR_NOT_SET; 116 static int ncr_addr = NCR_NOT_SET; 117 static int ncr_5380 = NCR_NOT_SET; 118 static int ncr_53c400 = NCR_NOT_SET; 119 static int ncr_53c400a = NCR_NOT_SET; 120 static int dtc_3181e = NCR_NOT_SET; 121 122 static struct override { 123 NCR5380_map_type NCR5380_map_name; 124 int irq; 125 int dma; 126 int board; /* Use NCR53c400, Ricoh, etc. extensions ? */ 127 } overrides 128 #ifdef GENERIC_NCR5380_OVERRIDE 129 [] __initdata = GENERIC_NCR5380_OVERRIDE; 130 #else 131 [1] __initdata = { { 0,},}; 132 #endif 133 134 #define NO_OVERRIDES ARRAY_SIZE(overrides) 135 136 #ifndef MODULE 137 138 /** 139 * internal_setup - handle lilo command string override 140 * @board: BOARD_* identifier for the board 141 * @str: unused 142 * @ints: numeric parameters 143 * 144 * Do LILO command line initialization of the overrides array. Display 145 * errors when needed 146 * 147 * Locks: none 148 */ 149 150 static void __init internal_setup(int board, char *str, int *ints) 151 { 152 static int commandline_current = 0; 153 switch (board) { 154 case BOARD_NCR5380: 155 if (ints[0] != 2 && ints[0] != 3) { 156 printk(KERN_ERR "generic_NCR5380_setup : usage ncr5380=" STRVAL(NCR5380_map_name) ",irq,dma\n"); 157 return; 158 } 159 break; 160 case BOARD_NCR53C400: 161 if (ints[0] != 2) { 162 printk(KERN_ERR "generic_NCR53C400_setup : usage ncr53c400=" STRVAL(NCR5380_map_name) ",irq\n"); 163 return; 164 } 165 break; 166 case BOARD_NCR53C400A: 167 if (ints[0] != 2) { 168 printk(KERN_ERR "generic_NCR53C400A_setup : usage ncr53c400a=" STRVAL(NCR5380_map_name) ",irq\n"); 169 return; 170 } 171 break; 172 case BOARD_DTC3181E: 173 if (ints[0] != 2) { 174 printk("generic_DTC3181E_setup : usage dtc3181e=" STRVAL(NCR5380_map_name) ",irq\n"); 175 return; 176 } 177 break; 178 } 179 180 if (commandline_current < NO_OVERRIDES) { 181 overrides[commandline_current].NCR5380_map_name = (NCR5380_map_type) ints[1]; 182 overrides[commandline_current].irq = ints[2]; 183 if (ints[0] == 3) 184 overrides[commandline_current].dma = ints[3]; 185 else 186 overrides[commandline_current].dma = DMA_NONE; 187 overrides[commandline_current].board = board; 188 ++commandline_current; 189 } 190 } 191 192 193 /** 194 * do_NCR53C80_setup - set up entry point 195 * @str: unused 196 * 197 * Setup function invoked at boot to parse the ncr5380= command 198 * line. 199 */ 200 201 static int __init do_NCR5380_setup(char *str) 202 { 203 int ints[10]; 204 205 get_options(str, ARRAY_SIZE(ints), ints); 206 internal_setup(BOARD_NCR5380, str, ints); 207 return 1; 208 } 209 210 /** 211 * do_NCR53C400_setup - set up entry point 212 * @str: unused 213 * @ints: integer parameters from kernel setup code 214 * 215 * Setup function invoked at boot to parse the ncr53c400= command 216 * line. 217 */ 218 219 static int __init do_NCR53C400_setup(char *str) 220 { 221 int ints[10]; 222 223 get_options(str, ARRAY_SIZE(ints), ints); 224 internal_setup(BOARD_NCR53C400, str, ints); 225 return 1; 226 } 227 228 /** 229 * do_NCR53C400A_setup - set up entry point 230 * @str: unused 231 * @ints: integer parameters from kernel setup code 232 * 233 * Setup function invoked at boot to parse the ncr53c400a= command 234 * line. 235 */ 236 237 static int __init do_NCR53C400A_setup(char *str) 238 { 239 int ints[10]; 240 241 get_options(str, ARRAY_SIZE(ints), ints); 242 internal_setup(BOARD_NCR53C400A, str, ints); 243 return 1; 244 } 245 246 /** 247 * do_DTC3181E_setup - set up entry point 248 * @str: unused 249 * @ints: integer parameters from kernel setup code 250 * 251 * Setup function invoked at boot to parse the dtc3181e= command 252 * line. 253 */ 254 255 static int __init do_DTC3181E_setup(char *str) 256 { 257 int ints[10]; 258 259 get_options(str, ARRAY_SIZE(ints), ints); 260 internal_setup(BOARD_DTC3181E, str, ints); 261 return 1; 262 } 263 264 #endif 265 266 /** 267 * generic_NCR5380_detect - look for NCR5380 controllers 268 * @tpnt: the scsi template 269 * 270 * Scan for the present of NCR5380, NCR53C400, NCR53C400A, DTC3181E 271 * and DTC436(ISAPnP) controllers. If overrides have been set we use 272 * them. 273 * 274 * The caller supplied NCR5380_init function is invoked from here, before 275 * the interrupt line is taken. 276 * 277 * Locks: none 278 */ 279 280 int __init generic_NCR5380_detect(struct scsi_host_template * tpnt) 281 { 282 static int current_override = 0; 283 int count; 284 unsigned int *ports; 285 #ifndef SCSI_G_NCR5380_MEM 286 int i; 287 unsigned long region_size = 16; 288 #endif 289 static unsigned int __initdata ncr_53c400a_ports[] = { 290 0x280, 0x290, 0x300, 0x310, 0x330, 0x340, 0x348, 0x350, 0 291 }; 292 static unsigned int __initdata dtc_3181e_ports[] = { 293 0x220, 0x240, 0x280, 0x2a0, 0x2c0, 0x300, 0x320, 0x340, 0 294 }; 295 int flags = 0; 296 struct Scsi_Host *instance; 297 #ifdef SCSI_G_NCR5380_MEM 298 unsigned long base; 299 void __iomem *iomem; 300 #endif 301 302 if (ncr_irq != NCR_NOT_SET) 303 overrides[0].irq = ncr_irq; 304 if (ncr_dma != NCR_NOT_SET) 305 overrides[0].dma = ncr_dma; 306 if (ncr_addr != NCR_NOT_SET) 307 overrides[0].NCR5380_map_name = (NCR5380_map_type) ncr_addr; 308 if (ncr_5380 != NCR_NOT_SET) 309 overrides[0].board = BOARD_NCR5380; 310 else if (ncr_53c400 != NCR_NOT_SET) 311 overrides[0].board = BOARD_NCR53C400; 312 else if (ncr_53c400a != NCR_NOT_SET) 313 overrides[0].board = BOARD_NCR53C400A; 314 else if (dtc_3181e != NCR_NOT_SET) 315 overrides[0].board = BOARD_DTC3181E; 316 #ifndef SCSI_G_NCR5380_MEM 317 if (!current_override && isapnp_present()) { 318 struct pnp_dev *dev = NULL; 319 count = 0; 320 while ((dev = pnp_find_dev(NULL, ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), dev))) { 321 if (count >= NO_OVERRIDES) 322 break; 323 if (pnp_device_attach(dev) < 0) 324 continue; 325 if (pnp_activate_dev(dev) < 0) { 326 printk(KERN_ERR "dtc436e probe: activate failed\n"); 327 pnp_device_detach(dev); 328 continue; 329 } 330 if (!pnp_port_valid(dev, 0)) { 331 printk(KERN_ERR "dtc436e probe: no valid port\n"); 332 pnp_device_detach(dev); 333 continue; 334 } 335 if (pnp_irq_valid(dev, 0)) 336 overrides[count].irq = pnp_irq(dev, 0); 337 else 338 overrides[count].irq = SCSI_IRQ_NONE; 339 if (pnp_dma_valid(dev, 0)) 340 overrides[count].dma = pnp_dma(dev, 0); 341 else 342 overrides[count].dma = DMA_NONE; 343 overrides[count].NCR5380_map_name = (NCR5380_map_type) pnp_port_start(dev, 0); 344 overrides[count].board = BOARD_DTC3181E; 345 count++; 346 } 347 } 348 #endif 349 tpnt->proc_name = "g_NCR5380"; 350 351 for (count = 0; current_override < NO_OVERRIDES; ++current_override) { 352 if (!(overrides[current_override].NCR5380_map_name)) 353 continue; 354 355 ports = NULL; 356 switch (overrides[current_override].board) { 357 case BOARD_NCR5380: 358 flags = FLAG_NO_PSEUDO_DMA; 359 break; 360 case BOARD_NCR53C400: 361 flags = FLAG_NCR53C400; 362 break; 363 case BOARD_NCR53C400A: 364 flags = FLAG_NO_PSEUDO_DMA; 365 ports = ncr_53c400a_ports; 366 break; 367 case BOARD_DTC3181E: 368 flags = FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E; 369 ports = dtc_3181e_ports; 370 break; 371 } 372 373 #ifndef SCSI_G_NCR5380_MEM 374 if (ports) { 375 /* wakeup sequence for the NCR53C400A and DTC3181E */ 376 377 /* Disable the adapter and look for a free io port */ 378 outb(0x59, 0x779); 379 outb(0xb9, 0x379); 380 outb(0xc5, 0x379); 381 outb(0xae, 0x379); 382 outb(0xa6, 0x379); 383 outb(0x00, 0x379); 384 385 if (overrides[current_override].NCR5380_map_name != PORT_AUTO) 386 for (i = 0; ports[i]; i++) { 387 if (!request_region(ports[i], 16, "ncr53c80")) 388 continue; 389 if (overrides[current_override].NCR5380_map_name == ports[i]) 390 break; 391 release_region(ports[i], 16); 392 } else 393 for (i = 0; ports[i]; i++) { 394 if (!request_region(ports[i], 16, "ncr53c80")) 395 continue; 396 if (inb(ports[i]) == 0xff) 397 break; 398 release_region(ports[i], 16); 399 } 400 if (ports[i]) { 401 /* At this point we have our region reserved */ 402 outb(0x59, 0x779); 403 outb(0xb9, 0x379); 404 outb(0xc5, 0x379); 405 outb(0xae, 0x379); 406 outb(0xa6, 0x379); 407 outb(0x80 | i, 0x379); /* set io port to be used */ 408 outb(0xc0, ports[i] + 9); 409 if (inb(ports[i] + 9) != 0x80) 410 continue; 411 else 412 overrides[current_override].NCR5380_map_name = ports[i]; 413 } else 414 continue; 415 } 416 else 417 { 418 /* Not a 53C400A style setup - just grab */ 419 if(!(request_region(overrides[current_override].NCR5380_map_name, NCR5380_region_size, "ncr5380"))) 420 continue; 421 region_size = NCR5380_region_size; 422 } 423 #else 424 base = overrides[current_override].NCR5380_map_name; 425 if (!request_mem_region(base, NCR5380_region_size, "ncr5380")) 426 continue; 427 iomem = ioremap(base, NCR5380_region_size); 428 if (!iomem) { 429 release_mem_region(base, NCR5380_region_size); 430 continue; 431 } 432 #endif 433 instance = scsi_register(tpnt, sizeof(struct NCR5380_hostdata)); 434 if (instance == NULL) { 435 #ifndef SCSI_G_NCR5380_MEM 436 release_region(overrides[current_override].NCR5380_map_name, region_size); 437 #else 438 iounmap(iomem); 439 release_mem_region(base, NCR5380_region_size); 440 #endif 441 continue; 442 } 443 444 instance->NCR5380_instance_name = overrides[current_override].NCR5380_map_name; 445 #ifndef SCSI_G_NCR5380_MEM 446 instance->n_io_port = region_size; 447 #else 448 ((struct NCR5380_hostdata *)instance->hostdata)->iomem = iomem; 449 #endif 450 451 NCR5380_init(instance, flags); 452 453 if (overrides[current_override].irq != IRQ_AUTO) 454 instance->irq = overrides[current_override].irq; 455 else 456 instance->irq = NCR5380_probe_irq(instance, 0xffff); 457 458 if (instance->irq != SCSI_IRQ_NONE) 459 if (request_irq(instance->irq, generic_NCR5380_intr, 460 0, "NCR5380", instance)) { 461 printk(KERN_WARNING "scsi%d : IRQ%d not free, interrupts disabled\n", instance->host_no, instance->irq); 462 instance->irq = SCSI_IRQ_NONE; 463 } 464 465 if (instance->irq == SCSI_IRQ_NONE) { 466 printk(KERN_INFO "scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no); 467 printk(KERN_INFO "scsi%d : please jumper the board for a free IRQ.\n", instance->host_no); 468 } 469 470 printk(KERN_INFO "scsi%d : at " STRVAL(NCR5380_map_name) " 0x%x", instance->host_no, (unsigned int) instance->NCR5380_instance_name); 471 if (instance->irq == SCSI_IRQ_NONE) 472 printk(" interrupts disabled"); 473 else 474 printk(" irq %d", instance->irq); 475 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", CAN_QUEUE, CMD_PER_LUN, GENERIC_NCR5380_PUBLIC_RELEASE); 476 NCR5380_print_options(instance); 477 printk("\n"); 478 479 ++current_override; 480 ++count; 481 } 482 return count; 483 } 484 485 /** 486 * generic_NCR5380_info - reporting string 487 * @host: NCR5380 to report on 488 * 489 * Report driver information for the NCR5380 490 */ 491 492 const char *generic_NCR5380_info(struct Scsi_Host *host) 493 { 494 static const char string[] = "Generic NCR5380/53C400 Driver"; 495 return string; 496 } 497 498 /** 499 * generic_NCR5380_release_resources - free resources 500 * @instance: host adapter to clean up 501 * 502 * Free the generic interface resources from this adapter. 503 * 504 * Locks: none 505 */ 506 507 int generic_NCR5380_release_resources(struct Scsi_Host *instance) 508 { 509 NCR5380_local_declare(); 510 NCR5380_setup(instance); 511 512 if (instance->irq != SCSI_IRQ_NONE) 513 free_irq(instance->irq, instance); 514 NCR5380_exit(instance); 515 516 #ifndef SCSI_G_NCR5380_MEM 517 release_region(instance->NCR5380_instance_name, instance->n_io_port); 518 #else 519 iounmap(((struct NCR5380_hostdata *)instance->hostdata)->iomem); 520 release_mem_region(instance->NCR5380_instance_name, NCR5380_region_size); 521 #endif 522 523 524 return 0; 525 } 526 527 #ifdef BIOSPARAM 528 /** 529 * generic_NCR5380_biosparam 530 * @disk: disk to compute geometry for 531 * @dev: device identifier for this disk 532 * @ip: sizes to fill in 533 * 534 * Generates a BIOS / DOS compatible H-C-S mapping for the specified 535 * device / size. 536 * 537 * XXX Most SCSI boards use this mapping, I could be incorrect. Someone 538 * using hard disks on a trantor should verify that this mapping 539 * corresponds to that used by the BIOS / ASPI driver by running the linux 540 * fdisk program and matching the H_C_S coordinates to what DOS uses. 541 * 542 * Locks: none 543 */ 544 545 static int 546 generic_NCR5380_biosparam(struct scsi_device *sdev, struct block_device *bdev, 547 sector_t capacity, int *ip) 548 { 549 ip[0] = 64; 550 ip[1] = 32; 551 ip[2] = capacity >> 11; 552 return 0; 553 } 554 #endif 555 556 #ifdef NCR53C400_PSEUDO_DMA 557 558 /** 559 * NCR5380_pread - pseudo DMA read 560 * @instance: adapter to read from 561 * @dst: buffer to read into 562 * @len: buffer length 563 * 564 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent 565 * controller 566 */ 567 568 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *dst, int len) 569 { 570 int blocks = len / 128; 571 int start = 0; 572 int bl; 573 574 NCR5380_local_declare(); 575 NCR5380_setup(instance); 576 577 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE | CSR_TRANS_DIR); 578 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 579 while (1) { 580 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 581 break; 582 } 583 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 584 printk(KERN_ERR "53C400r: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 585 return -1; 586 } 587 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY); 588 589 #ifndef SCSI_G_NCR5380_MEM 590 { 591 int i; 592 for (i = 0; i < 128; i++) 593 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 594 } 595 #else 596 /* implies SCSI_G_NCR5380_MEM */ 597 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 598 #endif 599 start += 128; 600 blocks--; 601 } 602 603 if (blocks) { 604 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 605 { 606 // FIXME - no timeout 607 } 608 609 #ifndef SCSI_G_NCR5380_MEM 610 { 611 int i; 612 for (i = 0; i < 128; i++) 613 dst[start + i] = NCR5380_read(C400_HOST_BUFFER); 614 } 615 #else 616 /* implies SCSI_G_NCR5380_MEM */ 617 memcpy_fromio(dst + start, iomem + NCR53C400_host_buffer, 128); 618 #endif 619 start += 128; 620 blocks--; 621 } 622 623 if (!(NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 624 printk("53C400r: no 53C80 gated irq after transfer"); 625 626 #if 0 627 /* 628 * DON'T DO THIS - THEY NEVER ARRIVE! 629 */ 630 printk("53C400r: Waiting for 53C80 registers\n"); 631 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG) 632 ; 633 #endif 634 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) 635 printk(KERN_ERR "53C400r: no end dma signal\n"); 636 637 NCR5380_write(MODE_REG, MR_BASE); 638 NCR5380_read(RESET_PARITY_INTERRUPT_REG); 639 return 0; 640 } 641 642 /** 643 * NCR5380_write - pseudo DMA write 644 * @instance: adapter to read from 645 * @dst: buffer to read into 646 * @len: buffer length 647 * 648 * Perform a pseudo DMA mode read from an NCR53C400 or equivalent 649 * controller 650 */ 651 652 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *src, int len) 653 { 654 int blocks = len / 128; 655 int start = 0; 656 int bl; 657 int i; 658 659 NCR5380_local_declare(); 660 NCR5380_setup(instance); 661 662 NCR5380_write(C400_CONTROL_STATUS_REG, CSR_BASE); 663 NCR5380_write(C400_BLOCK_COUNTER_REG, blocks); 664 while (1) { 665 if (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ) { 666 printk(KERN_ERR "53C400w: Got 53C80_IRQ start=%d, blocks=%d\n", start, blocks); 667 return -1; 668 } 669 670 if ((bl = NCR5380_read(C400_BLOCK_COUNTER_REG)) == 0) { 671 break; 672 } 673 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 674 ; // FIXME - timeout 675 #ifndef SCSI_G_NCR5380_MEM 676 { 677 for (i = 0; i < 128; i++) 678 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 679 } 680 #else 681 /* implies SCSI_G_NCR5380_MEM */ 682 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 683 #endif 684 start += 128; 685 blocks--; 686 } 687 if (blocks) { 688 while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_HOST_BUF_NOT_RDY) 689 ; // FIXME - no timeout 690 691 #ifndef SCSI_G_NCR5380_MEM 692 { 693 for (i = 0; i < 128; i++) 694 NCR5380_write(C400_HOST_BUFFER, src[start + i]); 695 } 696 #else 697 /* implies SCSI_G_NCR5380_MEM */ 698 memcpy_toio(iomem + NCR53C400_host_buffer, src + start, 128); 699 #endif 700 start += 128; 701 blocks--; 702 } 703 704 #if 0 705 printk("53C400w: waiting for registers to be available\n"); 706 THEY NEVER DO ! while (NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_53C80_REG); 707 printk("53C400w: Got em\n"); 708 #endif 709 710 /* Let's wait for this instead - could be ugly */ 711 /* All documentation says to check for this. Maybe my hardware is too 712 * fast. Waiting for it seems to work fine! KLL 713 */ 714 while (!(i = NCR5380_read(C400_CONTROL_STATUS_REG) & CSR_GATED_53C80_IRQ)) 715 ; // FIXME - no timeout 716 717 /* 718 * I know. i is certainly != 0 here but the loop is new. See previous 719 * comment. 720 */ 721 if (i) { 722 if (!((i = NCR5380_read(BUS_AND_STATUS_REG)) & BASR_END_DMA_TRANSFER)) 723 printk(KERN_ERR "53C400w: No END OF DMA bit - WHOOPS! BASR=%0x\n", i); 724 } else 725 printk(KERN_ERR "53C400w: no 53C80 gated irq after transfer (last block)\n"); 726 727 #if 0 728 if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_END_DMA_TRANSFER)) { 729 printk(KERN_ERR "53C400w: no end dma signal\n"); 730 } 731 #endif 732 while (!(NCR5380_read(TARGET_COMMAND_REG) & TCR_LAST_BYTE_SENT)) 733 ; // TIMEOUT 734 return 0; 735 } 736 #endif /* PSEUDO_DMA */ 737 738 /* 739 * Include the NCR5380 core code that we build our driver around 740 */ 741 742 #include "NCR5380.c" 743 744 #define PRINTP(x) seq_printf(m, x) 745 #define ANDP , 746 747 static void sprint_opcode(struct seq_file *m, int opcode) 748 { 749 PRINTP("0x%02x " ANDP opcode); 750 } 751 752 static void sprint_command(struct seq_file *m, unsigned char *command) 753 { 754 int i, s; 755 sprint_opcode(m, command[0]); 756 for (i = 1, s = COMMAND_SIZE(command[0]); i < s; ++i) 757 PRINTP("%02x " ANDP command[i]); 758 PRINTP("\n"); 759 } 760 761 /** 762 * sprintf_Scsi_Cmnd - print a scsi command 763 * @m: seq_fil to print into 764 * @cmd: SCSI command block 765 * 766 * Print out the target and command data in hex 767 */ 768 769 static void sprint_Scsi_Cmnd(struct seq_file *m, Scsi_Cmnd * cmd) 770 { 771 PRINTP("host number %d destination target %d, lun %llu\n" ANDP cmd->device->host->host_no ANDP cmd->device->id ANDP cmd->device->lun); 772 PRINTP(" command = "); 773 sprint_command(m, cmd->cmnd); 774 } 775 776 /** 777 * generic_NCR5380_proc_info - /proc for NCR5380 driver 778 * @buffer: buffer to print into 779 * @start: start position 780 * @offset: offset into buffer 781 * @len: length 782 * @hostno: instance to affect 783 * @inout: read/write 784 * 785 * Provide the procfs information for the 5380 controller. We fill 786 * this with useful debugging information including the commands 787 * being executed, disconnected command queue and the statistical 788 * data 789 * 790 * Locks: global cli/lock for queue walk 791 */ 792 793 static int generic_NCR5380_show_info(struct seq_file *m, struct Scsi_Host *scsi_ptr) 794 { 795 NCR5380_local_declare(); 796 unsigned long flags; 797 unsigned char status; 798 int i; 799 Scsi_Cmnd *ptr; 800 struct NCR5380_hostdata *hostdata; 801 #ifdef NCR5380_STATS 802 struct scsi_device *dev; 803 #endif 804 805 NCR5380_setup(scsi_ptr); 806 hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata; 807 808 spin_lock_irqsave(scsi_ptr->host_lock, flags); 809 PRINTP("SCSI host number %d : %s\n" ANDP scsi_ptr->host_no ANDP scsi_ptr->hostt->name); 810 PRINTP("Generic NCR5380 driver version %d\n" ANDP GENERIC_NCR5380_PUBLIC_RELEASE); 811 PRINTP("NCR5380 core version %d\n" ANDP NCR5380_PUBLIC_RELEASE); 812 #ifdef NCR53C400 813 PRINTP("NCR53C400 extension version %d\n" ANDP NCR53C400_PUBLIC_RELEASE); 814 PRINTP("NCR53C400 card%s detected\n" ANDP(((struct NCR5380_hostdata *) scsi_ptr->hostdata)->flags & FLAG_NCR53C400) ? "" : " not"); 815 # if NCR53C400_PSEUDO_DMA 816 PRINTP("NCR53C400 pseudo DMA used\n"); 817 # endif 818 #else 819 PRINTP("NO NCR53C400 driver extensions\n"); 820 #endif 821 PRINTP("Using %s mapping at %s 0x%lx, " ANDP STRVAL(NCR5380_map_config) ANDP STRVAL(NCR5380_map_name) ANDP scsi_ptr->NCR5380_instance_name); 822 if (scsi_ptr->irq == SCSI_IRQ_NONE) 823 PRINTP("no interrupt\n"); 824 else 825 PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq); 826 827 #ifdef NCR5380_STATS 828 if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue) 829 PRINTP("There are commands pending, transfer rates may be crud\n"); 830 if (hostdata->pendingr) 831 PRINTP(" %d pending reads" ANDP hostdata->pendingr); 832 if (hostdata->pendingw) 833 PRINTP(" %d pending writes" ANDP hostdata->pendingw); 834 if (hostdata->pendingr || hostdata->pendingw) 835 PRINTP("\n"); 836 shost_for_each_device(dev, scsi_ptr) { 837 unsigned long br = hostdata->bytes_read[dev->id]; 838 unsigned long bw = hostdata->bytes_write[dev->id]; 839 long tr = hostdata->time_read[dev->id] / HZ; 840 long tw = hostdata->time_write[dev->id] / HZ; 841 842 PRINTP(" T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type)); 843 for (i = 0; i < 8; i++) 844 if (dev->vendor[i] >= 0x20) 845 seq_putc(m, dev->vendor[i]); 846 seq_putc(m, ' '); 847 for (i = 0; i < 16; i++) 848 if (dev->model[i] >= 0x20) 849 seq_putc(m, dev->model[i]); 850 seq_putc(m, ' '); 851 for (i = 0; i < 4; i++) 852 if (dev->rev[i] >= 0x20) 853 seq_putc(m, dev->rev[i]); 854 seq_putc(m, ' '); 855 856 PRINTP("\n%10ld kb read in %5ld secs" ANDP br / 1024 ANDP tr); 857 if (tr) 858 PRINTP(" @ %5ld bps" ANDP br / tr); 859 860 PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw); 861 if (tw) 862 PRINTP(" @ %5ld bps" ANDP bw / tw); 863 PRINTP("\n"); 864 } 865 #endif 866 867 status = NCR5380_read(STATUS_REG); 868 if (!(status & SR_REQ)) 869 PRINTP("REQ not asserted, phase unknown.\n"); 870 else { 871 for (i = 0; (phases[i].value != PHASE_UNKNOWN) && (phases[i].value != (status & PHASE_MASK)); ++i); 872 PRINTP("Phase %s\n" ANDP phases[i].name); 873 } 874 875 if (!hostdata->connected) { 876 PRINTP("No currently connected command\n"); 877 } else { 878 sprint_Scsi_Cmnd(m, (Scsi_Cmnd *) hostdata->connected); 879 } 880 881 PRINTP("issue_queue\n"); 882 883 for (ptr = (Scsi_Cmnd *) hostdata->issue_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 884 sprint_Scsi_Cmnd(m, ptr); 885 886 PRINTP("disconnected_queue\n"); 887 888 for (ptr = (Scsi_Cmnd *) hostdata->disconnected_queue; ptr; ptr = (Scsi_Cmnd *) ptr->host_scribble) 889 sprint_Scsi_Cmnd(m, ptr); 890 891 spin_unlock_irqrestore(scsi_ptr->host_lock, flags); 892 return 0; 893 } 894 895 #undef PRINTP 896 #undef ANDP 897 898 static struct scsi_host_template driver_template = { 899 .show_info = generic_NCR5380_show_info, 900 .name = "Generic NCR5380/NCR53C400 Scsi Driver", 901 .detect = generic_NCR5380_detect, 902 .release = generic_NCR5380_release_resources, 903 .info = generic_NCR5380_info, 904 .queuecommand = generic_NCR5380_queue_command, 905 .eh_abort_handler = generic_NCR5380_abort, 906 .eh_bus_reset_handler = generic_NCR5380_bus_reset, 907 .bios_param = NCR5380_BIOSPARAM, 908 .can_queue = CAN_QUEUE, 909 .this_id = 7, 910 .sg_tablesize = SG_ALL, 911 .cmd_per_lun = CMD_PER_LUN, 912 .use_clustering = DISABLE_CLUSTERING, 913 }; 914 #include <linux/module.h> 915 #include "scsi_module.c" 916 917 module_param(ncr_irq, int, 0); 918 module_param(ncr_dma, int, 0); 919 module_param(ncr_addr, int, 0); 920 module_param(ncr_5380, int, 0); 921 module_param(ncr_53c400, int, 0); 922 module_param(ncr_53c400a, int, 0); 923 module_param(dtc_3181e, int, 0); 924 MODULE_LICENSE("GPL"); 925 926 #ifndef SCSI_G_NCR5380_MEM 927 static struct isapnp_device_id id_table[] = { 928 { 929 ISAPNP_ANY_ID, ISAPNP_ANY_ID, 930 ISAPNP_VENDOR('D', 'T', 'C'), ISAPNP_FUNCTION(0x436e), 931 0}, 932 {0} 933 }; 934 935 MODULE_DEVICE_TABLE(isapnp, id_table); 936 #endif 937 938 __setup("ncr5380=", do_NCR5380_setup); 939 __setup("ncr53c400=", do_NCR53C400_setup); 940 __setup("ncr53c400a=", do_NCR53C400A_setup); 941 __setup("dtc3181e=", do_DTC3181E_setup); 942