1/* 2 * sym53c416.c 3 * Low-level SCSI driver for sym53c416 chip. 4 * Copyright (C) 1998 Lieven Willems (lw_linux@hotmail.com) 5 * 6 * Changes : 7 * 8 * Marcelo Tosatti <marcelo@conectiva.com.br> : Added io_request_lock locking 9 * Alan Cox <alan@redhat.com> : Cleaned up code formatting 10 * Fixed an irq locking bug 11 * Added ISAPnP support 12 * 13 * LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>] 14 * 15 * This program is free software; you can redistribute it and/or modify it 16 * under the terms of the GNU General Public License as published by the 17 * Free Software Foundation; either version 2, or (at your option) any 18 * later version. 19 * 20 * This program is distributed in the hope that it will be useful, but 21 * WITHOUT ANY WARRANTY; without even the implied warranty of 22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 23 * General Public License for more details. 24 * 25 */ 26 27#include <linux/module.h> 28#include <linux/kernel.h> 29#include <linux/types.h> 30#include <linux/string.h> 31#include <linux/ioport.h> 32#include <linux/sched.h> 33#include <linux/interrupt.h> 34#include <linux/delay.h> 35#include <linux/proc_fs.h> 36#include <linux/spinlock.h> 37#include <asm/dma.h> 38#include <asm/system.h> 39#include <asm/io.h> 40#include <linux/blk.h> 41#include <linux/version.h> 42#include <linux/isapnp.h> 43#include "scsi.h" 44#include "hosts.h" 45#include "sd.h" 46#include "sym53c416.h" 47 48#define VERSION_STRING "Version 1.0.0-ac" 49 50#define TC_LOW 0x00 /* Transfer counter low */ 51#define TC_MID 0x01 /* Transfer counter mid */ 52#define SCSI_FIFO 0x02 /* SCSI FIFO register */ 53#define COMMAND_REG 0x03 /* Command Register */ 54#define STATUS_REG 0x04 /* Status Register (READ) */ 55#define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */ 56#define INT_REG 0x05 /* Interrupt Register (READ) */ 57#define TOM 0x05 /* Time out multiplier (WRITE) */ 58#define STP 0x06 /* Synchronous Transfer period */ 59#define SYNC_OFFSET 0x07 /* Synchronous Offset */ 60#define CONF_REG_1 0x08 /* Configuration register 1 */ 61#define CONF_REG_2 0x0B /* Configuration register 2 */ 62#define CONF_REG_3 0x0C /* Configuration register 3 */ 63#define CONF_REG_4 0x0D /* Configuration register 4 */ 64#define TC_HIGH 0x0E /* Transfer counter high */ 65#define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */ 66#define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */ 67#define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */ 68#define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */ 69#define PIO_FIFO_CNT 0x14 /* PIO FIFO count */ 70#define PIO_INT_REG 0x15 /* PIO interrupt register */ 71#define CONF_REG_5 0x16 /* Configuration register 5 */ 72#define FEATURE_EN 0x1D /* Feature Enable register */ 73 74/* Configuration register 1 entries: */ 75/* Bits 2-0: SCSI ID of host adapter */ 76#define SCM 0x80 /* Slow Cable Mode */ 77#define SRID 0x40 /* SCSI Reset Interrupt Disable */ 78#define PTM 0x20 /* Parity Test Mode */ 79#define EPC 0x10 /* Enable Parity Checking */ 80#define CTME 0x08 /* Special Test Mode */ 81 82/* Configuration register 2 entries: */ 83#define FE 0x40 /* Features Enable */ 84#define SCSI2 0x08 /* SCSI 2 Enable */ 85#define TBPA 0x04 /* Target Bad Parity Abort */ 86 87/* Configuration register 3 entries: */ 88#define IDMRC 0x80 /* ID Message Reserved Check */ 89#define QTE 0x40 /* Queue Tag Enable */ 90#define CDB10 0x20 /* Command Descriptor Block 10 */ 91#define FSCSI 0x10 /* FastSCSI */ 92#define FCLK 0x08 /* FastClock */ 93 94/* Configuration register 4 entries: */ 95#define RBS 0x08 /* Register bank select */ 96#define EAN 0x04 /* Enable Active Negotiation */ 97 98/* Configuration register 5 entries: */ 99#define LPSR 0x80 /* Lower Power SCSI Reset */ 100#define IE 0x20 /* Interrupt Enable */ 101#define LPM 0x02 /* Low Power Mode */ 102#define WSE0 0x01 /* 0WS Enable */ 103 104/* Interrupt register entries: */ 105#define SRST 0x80 /* SCSI Reset */ 106#define ILCMD 0x40 /* Illegal Command */ 107#define DIS 0x20 /* Disconnect */ 108#define BS 0x10 /* Bus Service */ 109#define FC 0x08 /* Function Complete */ 110#define RESEL 0x04 /* Reselected */ 111#define SI 0x03 /* Selection Interrupt */ 112 113/* Status Register Entries: */ 114#define SCI 0x80 /* SCSI Core Int */ 115#define GE 0x40 /* Gross Error */ 116#define PE 0x20 /* Parity Error */ 117#define TC 0x10 /* Terminal Count */ 118#define VGC 0x08 /* Valid Group Code */ 119#define PHBITS 0x07 /* Phase bits */ 120 121/* PIO Interrupt Register Entries: */ 122#define SCI 0x80 /* SCSI Core Int */ 123#define PFI 0x40 /* PIO FIFO Interrupt */ 124#define FULL 0x20 /* PIO FIFO Full */ 125#define EMPTY 0x10 /* PIO FIFO Empty */ 126#define CE 0x08 /* Collision Error */ 127#define OUE 0x04 /* Overflow / Underflow error */ 128#define FIE 0x02 /* Full Interrupt Enable */ 129#define EIE 0x01 /* Empty Interrupt Enable */ 130 131/* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */ 132#define PHASE_DATA_OUT 0x00 133#define PHASE_DATA_IN 0x01 134#define PHASE_COMMAND 0x02 135#define PHASE_STATUS 0x03 136#define PHASE_RESERVED_1 0x04 137#define PHASE_RESERVED_2 0x05 138#define PHASE_MESSAGE_OUT 0x06 139#define PHASE_MESSAGE_IN 0x07 140 141/* SYM53C416 core commands */ 142#define NOOP 0x00 143#define FLUSH_FIFO 0x01 144#define RESET_CHIP 0x02 145#define RESET_SCSI_BUS 0x03 146#define DISABLE_SEL_RESEL 0x45 147#define RESEL_SEQ 0x40 148#define SEL_WITHOUT_ATN_SEQ 0x41 149#define SEL_WITH_ATN_SEQ 0x42 150#define SEL_WITH_ATN_AND_STOP_SEQ 0x43 151#define ENABLE_SEL_RESEL 0x44 152#define SEL_WITH_ATN3_SEQ 0x46 153#define RESEL3_SEQ 0x47 154#define SND_MSG 0x20 155#define SND_STAT 0x21 156#define SND_DATA 0x22 157#define DISCONNECT_SEQ 0x23 158#define TERMINATE_SEQ 0x24 159#define TARGET_COMM_COMPLETE_SEQ 0x25 160#define DISCONN 0x27 161#define RECV_MSG_SEQ 0x28 162#define RECV_CMD 0x29 163#define RECV_DATA 0x2A 164#define RECV_CMD_SEQ 0x2B 165#define TARGET_ABORT_PIO 0x04 166#define TRANSFER_INFORMATION 0x10 167#define INIT_COMM_COMPLETE_SEQ 0x11 168#define MSG_ACCEPTED 0x12 169#define TRANSFER_PAD 0x18 170#define SET_ATN 0x1A 171#define RESET_ATN 0x1B 172#define ILLEGAL 0xFF 173 174#define PIO_MODE 0x80 175 176#define IO_RANGE 0x20 /* 0x00 - 0x1F */ 177#define ID "sym53c416" /* Attention: copied to the sym53c416.h */ 178#define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */ 179 180#define READ_TIMEOUT 150 181#define WRITE_TIMEOUT 150 182 183#ifdef MODULE 184 185#define sym53c416_base sym53c416 186#define sym53c416_base_1 sym53c416_1 187#define sym53c416_base_2 sym53c416_2 188#define sym53c416_base_3 sym53c416_3 189 190static unsigned int sym53c416_base[2] = {0,0}; 191static unsigned int sym53c416_base_1[2] = {0,0}; 192static unsigned int sym53c416_base_2[2] = {0,0}; 193static unsigned int sym53c416_base_3[2] = {0,0}; 194 195#endif 196 197/* #define DEBUG */ 198 199/* Macro for debugging purposes */ 200 201#ifdef DEBUG 202#define DEB(x) x 203#else 204#define DEB(x) 205#endif 206 207#define MAXHOSTS 4 208 209enum phases 210{ 211 idle, 212 data_out, 213 data_in, 214 command_ph, 215 status_ph, 216 message_out, 217 message_in 218}; 219 220typedef struct 221{ 222 int base; 223 int irq; 224 int scsi_id; 225} host; 226 227static host hosts[MAXHOSTS] = { 228 {0, 0, SYM53C416_SCSI_ID}, 229 {0, 0, SYM53C416_SCSI_ID}, 230 {0, 0, SYM53C416_SCSI_ID}, 231 {0, 0, SYM53C416_SCSI_ID} 232 }; 233 234static int host_index = 0; 235static char info[120]; 236static Scsi_Cmnd *current_command = NULL; 237static int fastpio = 1; 238 239static int probeaddrs[] = {0x200, 0x220, 0x240, 0}; 240 241static void sym53c416_set_transfer_counter(int base, unsigned int len) 242{ 243 /* Program Transfer Counter */ 244 outb(len & 0x0000FF, base + TC_LOW); 245 outb((len & 0x00FF00) >> 8, base + TC_MID); 246 outb((len & 0xFF0000) >> 16, base + TC_HIGH); 247} 248 249/* Returns the number of bytes read */ 250static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len) 251{ 252 unsigned int orig_len = len; 253 unsigned long flags = 0; 254 unsigned int bytes_left; 255 int i; 256 int timeout = READ_TIMEOUT; 257 258 /* Do transfer */ 259 save_flags(flags); 260 cli(); 261 while(len && timeout) 262 { 263 bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */ 264 if(fastpio && bytes_left > 3) 265 { 266 insl(base + PIO_FIFO_1, buffer, bytes_left >> 2); 267 buffer += bytes_left & 0xFC; 268 len -= bytes_left & 0xFC; 269 } 270 else if(bytes_left > 0) 271 { 272 len -= bytes_left; 273 for(; bytes_left > 0; bytes_left--) 274 *(buffer++) = inb(base + PIO_FIFO_1); 275 } 276 else 277 { 278 i = jiffies + timeout; 279 restore_flags(flags); 280 while(jiffies < i && (inb(base + PIO_INT_REG) & EMPTY) && timeout) 281 if(inb(base + PIO_INT_REG) & SCI) 282 timeout = 0; 283 save_flags(flags); 284 cli(); 285 if(inb(base + PIO_INT_REG) & EMPTY) 286 timeout = 0; 287 } 288 } 289 restore_flags(flags); 290 return orig_len - len; 291} 292 293/* Returns the number of bytes written */ 294static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len) 295{ 296 unsigned int orig_len = len; 297 unsigned long flags = 0; 298 unsigned int bufferfree; 299 unsigned int i; 300 unsigned int timeout = WRITE_TIMEOUT; 301 302 /* Do transfer */ 303 save_flags(flags); 304 cli(); 305 while(len && timeout) 306 { 307 bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT); 308 if(bufferfree > len) 309 bufferfree = len; 310 if(fastpio && bufferfree > 3) 311 { 312 outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2); 313 buffer += bufferfree & 0xFC; 314 len -= bufferfree & 0xFC; 315 } 316 else if(bufferfree > 0) 317 { 318 len -= bufferfree; 319 for(; bufferfree > 0; bufferfree--) 320 outb(*(buffer++), base + PIO_FIFO_1); 321 } 322 else 323 { 324 i = jiffies + timeout; 325 restore_flags(flags); 326 while(jiffies < i && (inb(base + PIO_INT_REG) & FULL) && timeout) 327 ; 328 save_flags(flags); 329 cli(); 330 if(inb(base + PIO_INT_REG) & FULL) 331 timeout = 0; 332 } 333 } 334 restore_flags(flags); 335 return orig_len - len; 336} 337 338static void sym53c416_intr_handle(int irq, void *dev_id, struct pt_regs *regs) 339{ 340 int base = 0; 341 int i; 342 unsigned long flags = 0; 343 unsigned char status_reg, pio_int_reg, int_reg; 344 struct scatterlist *sglist; 345 unsigned int sgcount; 346 unsigned int tot_trans = 0; 347 348 /* We search the base address of the host adapter which caused the interrupt */ 349 for(i = 0; i < host_index && !base; i++) 350 if(irq == hosts[i].irq) 351 base = hosts[i].base; 352 /* If no adapter found, we cannot handle the interrupt. Leave a message */ 353 /* and continue. This should never happen... */ 354 if(!base) 355 { 356 printk(KERN_ERR "sym53c416: No host adapter defined for interrupt %d\n", irq); 357 return; 358 } 359 /* Now we have the base address and we can start handling the interrupt */ 360 361 spin_lock_irqsave(&io_request_lock,flags); 362 status_reg = inb(base + STATUS_REG); 363 pio_int_reg = inb(base + PIO_INT_REG); 364 int_reg = inb(base + INT_REG); 365 spin_unlock_irqrestore(&io_request_lock, flags); 366 367 /* First, we handle error conditions */ 368 if(int_reg & SCI) /* SCSI Reset */ 369 { 370 printk(KERN_DEBUG "sym53c416: Reset received\n"); 371 current_command->SCp.phase = idle; 372 current_command->result = DID_RESET << 16; 373 spin_lock_irqsave(&io_request_lock, flags); 374 current_command->scsi_done(current_command); 375 spin_unlock_irqrestore(&io_request_lock, flags); 376 return; 377 } 378 if(int_reg & ILCMD) /* Illegal Command */ 379 { 380 printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG)); 381 current_command->SCp.phase = idle; 382 current_command->result = DID_ERROR << 16; 383 spin_lock_irqsave(&io_request_lock, flags); 384 current_command->scsi_done(current_command); 385 spin_unlock_irqrestore(&io_request_lock, flags); 386 return; 387 } 388 if(status_reg & GE) /* Gross Error */ 389 { 390 printk(KERN_WARNING "sym53c416: Controller reports gross error.\n"); 391 current_command->SCp.phase = idle; 392 current_command->result = DID_ERROR << 16; 393 spin_lock_irqsave(&io_request_lock, flags); 394 current_command->scsi_done(current_command); 395 spin_unlock_irqrestore(&io_request_lock, flags); 396 return; 397 } 398 if(status_reg & PE) /* Parity Error */ 399 { 400 printk(KERN_WARNING "sym53c416:SCSI parity error.\n"); 401 current_command->SCp.phase = idle; 402 current_command->result = DID_PARITY << 16; 403 spin_lock_irqsave(&io_request_lock, flags); 404 current_command->scsi_done(current_command); 405 spin_unlock_irqrestore(&io_request_lock, flags); 406 return; 407 } 408 if(pio_int_reg & (CE | OUE)) 409 { 410 printk(KERN_WARNING "sym53c416: PIO interrupt error.\n"); 411 current_command->SCp.phase = idle; 412 current_command->result = DID_ERROR << 16; 413 spin_lock_irqsave(&io_request_lock, flags); 414 current_command->scsi_done(current_command); 415 spin_unlock_irqrestore(&io_request_lock, flags); 416 return; 417 } 418 if(int_reg & DIS) /* Disconnect */ 419 { 420 if(current_command->SCp.phase != message_in) 421 current_command->result = DID_NO_CONNECT << 16; 422 else 423 current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16); 424 current_command->SCp.phase = idle; 425 spin_lock_irqsave(&io_request_lock, flags); 426 current_command->scsi_done(current_command); 427 spin_unlock_irqrestore(&io_request_lock, flags); 428 return; 429 } 430 /* Now we handle SCSI phases */ 431 432 switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */ 433 { 434 case PHASE_DATA_OUT: 435 { 436 if(int_reg & BS) 437 { 438 current_command->SCp.phase = data_out; 439 outb(FLUSH_FIFO, base + COMMAND_REG); 440 sym53c416_set_transfer_counter(base, current_command->request_bufflen); 441 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); 442 if(!current_command->use_sg) 443 tot_trans = sym53c416_write(base, current_command->request_buffer, current_command->request_bufflen); 444 else 445 { 446 sgcount = current_command->use_sg; 447 sglist = current_command->request_buffer; 448 while(sgcount--) 449 { 450 tot_trans += sym53c416_write(base, sglist->address, sglist->length); 451 sglist++; 452 } 453 } 454 if(tot_trans < current_command->underflow) 455 printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); 456 } 457 break; 458 } 459 460 case PHASE_DATA_IN: 461 { 462 if(int_reg & BS) 463 { 464 current_command->SCp.phase = data_in; 465 outb(FLUSH_FIFO, base + COMMAND_REG); 466 sym53c416_set_transfer_counter(base, current_command->request_bufflen); 467 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); 468 if(!current_command->use_sg) 469 tot_trans = sym53c416_read(base, current_command->request_buffer, current_command->request_bufflen); 470 else 471 { 472 sgcount = current_command->use_sg; 473 sglist = current_command->request_buffer; 474 while(sgcount--) 475 { 476 tot_trans += sym53c416_read(base, sglist->address, sglist->length); 477 sglist++; 478 } 479 } 480 if(tot_trans < current_command->underflow) 481 printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); 482 } 483 break; 484 } 485 486 case PHASE_COMMAND: 487 { 488 current_command->SCp.phase = command_ph; 489 printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n"); 490 break; 491 } 492 493 case PHASE_STATUS: 494 { 495 current_command->SCp.phase = status_ph; 496 outb(FLUSH_FIFO, base + COMMAND_REG); 497 outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG); 498 break; 499 } 500 501 case PHASE_RESERVED_1: 502 case PHASE_RESERVED_2: 503 { 504 printk(KERN_ERR "sym53c416: Reserved phase occurred.\n"); 505 break; 506 } 507 508 case PHASE_MESSAGE_OUT: 509 { 510 current_command->SCp.phase = message_out; 511 outb(SET_ATN, base + COMMAND_REG); 512 outb(MSG_ACCEPTED, base + COMMAND_REG); 513 break; 514 } 515 516 case PHASE_MESSAGE_IN: 517 { 518 current_command->SCp.phase = message_in; 519 current_command->SCp.Status = inb(base + SCSI_FIFO); 520 current_command->SCp.Message = inb(base + SCSI_FIFO); 521 if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT) 522 outb(SET_ATN, base + COMMAND_REG); 523 outb(MSG_ACCEPTED, base + COMMAND_REG); 524 break; 525 } 526 } 527} 528 529static void sym53c416_init(int base, int scsi_id) 530{ 531 outb(RESET_CHIP, base + COMMAND_REG); 532 outb(NOOP, base + COMMAND_REG); 533 outb(0x99, base + TOM); /* Time out of 250 ms */ 534 outb(0x05, base + STP); 535 outb(0x00, base + SYNC_OFFSET); 536 outb(EPC | scsi_id, base + CONF_REG_1); 537 outb(FE | SCSI2 | TBPA, base + CONF_REG_2); 538 outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3); 539 outb(0x83 | EAN, base + CONF_REG_4); 540 outb(IE | WSE0, base + CONF_REG_5); 541 outb(0, base + FEATURE_EN); 542} 543 544static int sym53c416_probeirq(int base, int scsi_id) 545{ 546 int irq, irqs, i; 547 548 /* Clear interrupt register */ 549 inb(base + INT_REG); 550 /* Start probing for irq's */ 551 irqs = probe_irq_on(); 552 /* Reinit chip */ 553 sym53c416_init(base, scsi_id); 554 /* Cause interrupt */ 555 outb(NOOP, base + COMMAND_REG); 556 outb(ILLEGAL, base + COMMAND_REG); 557 outb(0x07, base + DEST_BUS_ID); 558 outb(0x00, base + DEST_BUS_ID); 559 /* Wait for interrupt to occur */ 560 i = jiffies + 20; 561 while(i > jiffies && !(inb(base + STATUS_REG) & SCI)) 562 barrier(); 563 if(i <= jiffies) /* timed out */ 564 return 0; 565 /* Get occurred irq */ 566 irq = probe_irq_off(irqs); 567 sym53c416_init(base, scsi_id); 568 return irq; 569} 570 571/* Setup: sym53c416=base,irq */ 572void sym53c416_setup(char *str, int *ints) 573{ 574 int i; 575 576 if(host_index >= MAXHOSTS) 577 { 578 printk(KERN_WARNING "sym53c416: Too many hosts defined\n"); 579 return; 580 } 581 if(ints[0] < 1 || ints[0] > 2) 582 { 583 printk(KERN_ERR "sym53c416: Wrong number of parameters:\n"); 584 printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n"); 585 return; 586 } 587 for(i = 0; i < host_index && i >= 0; i++) 588 if(hosts[i].base == ints[1]) 589 i = -2; 590 if(i >= 0) 591 { 592 hosts[host_index].base = ints[1]; 593 hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0; 594 host_index++; 595 } 596} 597 598static int sym53c416_test(int base) 599{ 600 outb(RESET_CHIP, base + COMMAND_REG); 601 outb(NOOP, base + COMMAND_REG); 602 if(inb(base + COMMAND_REG) != NOOP) 603 return 0; 604 if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF) 605 return 0; 606 if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY) 607 return 0; 608 return 1; 609} 610 611 612static struct isapnp_device_id id_table[] = { 613 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, 614 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 }, 615 {0} 616}; 617 618MODULE_DEVICE_TABLE(isapnp, id_table); 619 620void sym53c416_probe(void) 621{ 622 int *base = probeaddrs; 623 int ints[2]; 624 625 ints[0] = 1; 626 for(; *base; base++) 627 { 628 if(!check_region(*base, IO_RANGE) && sym53c416_test(*base)) 629 { 630 ints[1] = *base; 631 sym53c416_setup(NULL, ints); 632 } 633 } 634} 635 636int sym53c416_detect(Scsi_Host_Template *tpnt) 637{ 638 unsigned long flags; 639 struct Scsi_Host * shpnt = NULL; 640 int i; 641 int count; 642 struct pci_dev *idev = NULL; 643 644#ifdef MODULE 645 int ints[3]; 646 647 ints[0] = 2; 648 if(sym53c416_base) 649 { 650 ints[1] = sym53c416_base[0]; 651 ints[2] = sym53c416_base[1]; 652 sym53c416_setup(NULL, ints); 653 } 654 if(sym53c416_base_1) 655 { 656 ints[1] = sym53c416_base_1[0]; 657 ints[2] = sym53c416_base_1[1]; 658 sym53c416_setup(NULL, ints); 659 } 660 if(sym53c416_base_2) 661 { 662 ints[1] = sym53c416_base_2[0]; 663 ints[2] = sym53c416_base_2[1]; 664 sym53c416_setup(NULL, ints); 665 } 666 if(sym53c416_base_3) 667 { 668 ints[1] = sym53c416_base_3[0]; 669 ints[2] = sym53c416_base_3[1]; 670 sym53c416_setup(NULL, ints); 671 } 672#endif 673 printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING); 674 675 while((idev=isapnp_find_dev(NULL, ISAPNP_VENDOR('S','L','I'), 676 ISAPNP_FUNCTION(0x4163), idev))!=NULL) 677 { 678 int i[3]; 679 680 if(idev->prepare(idev)<0) 681 { 682 printk(KERN_WARNING "sym53c416: unable to prepare PnP card.\n"); 683 continue; 684 } 685 if(idev->activate(idev)<0) 686 { 687 printk(KERN_WARNING "sym53c416: unable to activate PnP card.\n"); 688 continue; 689 } 690 691 i[0] = 2; 692 i[1] = idev->resource[0].start; 693 i[2] = idev->irq_resource[0].start; 694 695 printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n", 696 i[1], i[2]); 697 sym53c416_setup(NULL, i); 698 } 699 sym53c416_probe(); 700 701 /* Now we register and set up each host adapter found... */ 702 for(count = 0, i = 0; i < host_index; i++) 703 { 704 if(!sym53c416_test(hosts[i].base)) 705 printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base); 706 else 707 { 708 if(hosts[i].irq == 0) 709 /* We don't have an irq yet, so we should probe for one */ 710 if((hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id)) == 0) 711 printk(KERN_WARNING "IRQ autoprobing failed for sym53c416 at address 0x%03x\n", hosts[i].base); 712 if(hosts[i].irq && !check_region(hosts[i].base, IO_RANGE)) 713 { 714 shpnt = scsi_register(tpnt, 0); 715 if(shpnt==NULL) 716 continue; 717 save_flags(flags); 718 cli(); 719 /* Request for specified IRQ */ 720 if(request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, NULL)) 721 { 722 restore_flags(flags); 723 printk(KERN_ERR "sym53c416: Unable to assign IRQ %d\n", hosts[i].irq); 724 scsi_unregister(shpnt); 725 } 726 else 727 { 728 /* Inform the kernel of our IO range */ 729 request_region(hosts[i].base, IO_RANGE, ID); 730 shpnt->unique_id = hosts[i].base; 731 shpnt->io_port = hosts[i].base; 732 shpnt->n_io_port = IO_RANGE; 733 shpnt->irq = hosts[i].irq; 734 shpnt->this_id = hosts[i].scsi_id; 735 sym53c416_init(hosts[i].base, hosts[i].scsi_id); 736 count++; 737 restore_flags(flags); 738 } 739 } 740 } 741 } 742 return count; 743} 744 745const char *sym53c416_info(struct Scsi_Host *SChost) 746{ 747 int i; 748 int base = SChost->io_port; 749 int irq = SChost->irq; 750 int scsi_id = 0; 751 int rev = inb(base + TC_HIGH); 752 753 for(i = 0; i < host_index; i++) 754 if(hosts[i].base == base) 755 scsi_id = hosts[i].scsi_id; 756 sprintf(info, "Symbios Logic 53c416 (rev. %d) at 0x%03x, irq %d, SCSI-ID %d, %s pio", rev, base, irq, scsi_id, (fastpio)? "fast" : "slow"); 757 return info; 758} 759 760int sym53c416_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) 761{ 762 int base; 763 unsigned long flags = 0; 764 int i; 765 766 /* Store base register as we can have more than one controller in the system */ 767 base = SCpnt->host->io_port; 768 current_command = SCpnt; /* set current command */ 769 current_command->scsi_done = done; /* set ptr to done function */ 770 current_command->SCp.phase = command_ph; /* currect phase is the command phase */ 771 current_command->SCp.Status = 0; 772 current_command->SCp.Message = 0; 773 774 save_flags(flags); 775 cli(); 776 outb(SCpnt->target, base + DEST_BUS_ID); /* Set scsi id target */ 777 outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */ 778 /* Write SCSI command into the SCSI fifo */ 779 for(i = 0; i < SCpnt->cmd_len; i++) 780 outb(SCpnt->cmnd[i], base + SCSI_FIFO); 781 /* Start selection sequence */ 782 outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG); 783 /* Now an interrupt will be generated which we will catch in out interrupt routine */ 784 restore_flags(flags); 785 return 0; 786} 787 788static void internal_done(Scsi_Cmnd *SCpnt) 789{ 790 SCpnt->SCp.Status++; 791} 792 793static int sym53c416_command(Scsi_Cmnd *SCpnt) 794{ 795 sym53c416_queuecommand(SCpnt, internal_done); 796 SCpnt->SCp.Status = 0; 797 while(!SCpnt->SCp.Status) 798 barrier(); 799 return SCpnt->result; 800} 801 802static int sym53c416_abort(Scsi_Cmnd *SCpnt) 803{ 804 //printk("sym53c416_abort\n"); 805 /* We don't know how to abort for the moment */ 806 return SCSI_ABORT_SNOOZE; 807} 808 809static int sym53c416_reset(Scsi_Cmnd *SCpnt, unsigned int reset_flags) 810{ 811 int base; 812 int scsi_id = -1; 813 int i; 814 815 //printk("sym53c416_reset\n"); 816 base = SCpnt->host->io_port; 817 /* search scsi_id */ 818 for(i = 0; i < host_index && scsi_id != -1; i++) 819 if(hosts[i].base == base) 820 scsi_id = hosts[i].scsi_id; 821 outb(RESET_CHIP, base + COMMAND_REG); 822 outb(NOOP | PIO_MODE, base + COMMAND_REG); 823 outb(RESET_SCSI_BUS, base + COMMAND_REG); 824 sym53c416_init(base, scsi_id); 825 return SCSI_RESET_PENDING; 826} 827 828static int sym53c416_bios_param(Disk *disk, kdev_t dev, int *ip) 829{ 830 int size; 831 832 size = disk->capacity; 833 ip[0] = 64; /* heads */ 834 ip[1] = 32; /* sectors */ 835 if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */ 836 { 837 ip[0] = 255; /* heads */ 838 ip[1] = 63; /* sectors */ 839 ip[2] = size / (255 * 63); /* cylinders */ 840 } 841 return 0; 842} 843 844/* Loadable module support */ 845#ifdef MODULE 846 847MODULE_AUTHOR("Lieven Willems"); 848MODULE_LICENSE("GPL"); 849 850MODULE_PARM(sym53c416, "1-2i"); 851MODULE_PARM(sym53c416_1, "1-2i"); 852MODULE_PARM(sym53c416_2, "1-2i"); 853MODULE_PARM(sym53c416_3, "1-2i"); 854 855#endif 856 857static Scsi_Host_Template driver_template = SYM53C416; 858 859#include "scsi_module.c" 860