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@lxorguk.ukuu.org.uk> : Cleaned up code formatting 10 * Fixed an irq locking bug 11 * Added ISAPnP support 12 * Bjoern A. Zeeb <bzeeb@zabbadoz.net> : Initial irq locking updates 13 * Added another card with ISAPnP support 14 * 15 * LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>] 16 * 17 * This program is free software; you can redistribute it and/or modify it 18 * under the terms of the GNU General Public License as published by the 19 * Free Software Foundation; either version 2, or (at your option) any 20 * later version. 21 * 22 * This program is distributed in the hope that it will be useful, but 23 * WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 25 * General Public License for more details. 26 * 27 */ 28 29#include <linux/module.h> 30#include <linux/kernel.h> 31#include <linux/types.h> 32#include <linux/init.h> 33#include <linux/string.h> 34#include <linux/ioport.h> 35#include <linux/interrupt.h> 36#include <linux/delay.h> 37#include <linux/proc_fs.h> 38#include <linux/spinlock.h> 39#include <asm/dma.h> 40#include <asm/system.h> 41#include <asm/io.h> 42#include <linux/blkdev.h> 43#include <linux/isapnp.h> 44#include "scsi.h" 45#include <scsi/scsi_host.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]; 191static unsigned int sym53c416_base_1[2]; 192static unsigned int sym53c416_base_2[2]; 193static unsigned int sym53c416_base_3[2]; 194 195#endif 196 197#define MAXHOSTS 4 198 199#define SG_ADDRESS(buffer) ((char *) sg_virt((buffer))) 200 201enum phases 202{ 203 idle, 204 data_out, 205 data_in, 206 command_ph, 207 status_ph, 208 message_out, 209 message_in 210}; 211 212typedef struct 213{ 214 int base; 215 int irq; 216 int scsi_id; 217} host; 218 219static host hosts[MAXHOSTS] = { 220 {0, 0, SYM53C416_SCSI_ID}, 221 {0, 0, SYM53C416_SCSI_ID}, 222 {0, 0, SYM53C416_SCSI_ID}, 223 {0, 0, SYM53C416_SCSI_ID} 224 }; 225 226static int host_index = 0; 227static char info[120]; 228static Scsi_Cmnd *current_command = NULL; 229static int fastpio = 1; 230 231static int probeaddrs[] = {0x200, 0x220, 0x240, 0}; 232 233static void sym53c416_set_transfer_counter(int base, unsigned int len) 234{ 235 /* Program Transfer Counter */ 236 outb(len & 0x0000FF, base + TC_LOW); 237 outb((len & 0x00FF00) >> 8, base + TC_MID); 238 outb((len & 0xFF0000) >> 16, base + TC_HIGH); 239} 240 241static DEFINE_SPINLOCK(sym53c416_lock); 242 243/* Returns the number of bytes read */ 244static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len) 245{ 246 unsigned int orig_len = len; 247 unsigned long flags = 0; 248 unsigned int bytes_left; 249 unsigned long i; 250 int timeout = READ_TIMEOUT; 251 252 /* Do transfer */ 253 spin_lock_irqsave(&sym53c416_lock, flags); 254 while(len && timeout) 255 { 256 bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */ 257 if(fastpio && bytes_left > 3) 258 { 259 insl(base + PIO_FIFO_1, buffer, bytes_left >> 2); 260 buffer += bytes_left & 0xFC; 261 len -= bytes_left & 0xFC; 262 } 263 else if(bytes_left > 0) 264 { 265 len -= bytes_left; 266 for(; bytes_left > 0; bytes_left--) 267 *(buffer++) = inb(base + PIO_FIFO_1); 268 } 269 else 270 { 271 i = jiffies + timeout; 272 spin_unlock_irqrestore(&sym53c416_lock, flags); 273 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout) 274 if(inb(base + PIO_INT_REG) & SCI) 275 timeout = 0; 276 spin_lock_irqsave(&sym53c416_lock, flags); 277 if(inb(base + PIO_INT_REG) & EMPTY) 278 timeout = 0; 279 } 280 } 281 spin_unlock_irqrestore(&sym53c416_lock, flags); 282 return orig_len - len; 283} 284 285/* Returns the number of bytes written */ 286static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len) 287{ 288 unsigned int orig_len = len; 289 unsigned long flags = 0; 290 unsigned int bufferfree; 291 unsigned long i; 292 unsigned int timeout = WRITE_TIMEOUT; 293 294 /* Do transfer */ 295 spin_lock_irqsave(&sym53c416_lock, flags); 296 while(len && timeout) 297 { 298 bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT); 299 if(bufferfree > len) 300 bufferfree = len; 301 if(fastpio && bufferfree > 3) 302 { 303 outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2); 304 buffer += bufferfree & 0xFC; 305 len -= bufferfree & 0xFC; 306 } 307 else if(bufferfree > 0) 308 { 309 len -= bufferfree; 310 for(; bufferfree > 0; bufferfree--) 311 outb(*(buffer++), base + PIO_FIFO_1); 312 } 313 else 314 { 315 i = jiffies + timeout; 316 spin_unlock_irqrestore(&sym53c416_lock, flags); 317 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout) 318 ; 319 spin_lock_irqsave(&sym53c416_lock, flags); 320 if(inb(base + PIO_INT_REG) & FULL) 321 timeout = 0; 322 } 323 } 324 spin_unlock_irqrestore(&sym53c416_lock, flags); 325 return orig_len - len; 326} 327 328static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id) 329{ 330 struct Scsi_Host *dev = dev_id; 331 int base = dev->io_port; 332 int i; 333 unsigned long flags = 0; 334 unsigned char status_reg, pio_int_reg, int_reg; 335 struct scatterlist *sg; 336 unsigned int tot_trans = 0; 337 338 spin_lock_irqsave(dev->host_lock,flags); 339 status_reg = inb(base + STATUS_REG); 340 pio_int_reg = inb(base + PIO_INT_REG); 341 int_reg = inb(base + INT_REG); 342 spin_unlock_irqrestore(dev->host_lock, flags); 343 344 /* First, we handle error conditions */ 345 if(int_reg & SCI) /* SCSI Reset */ 346 { 347 printk(KERN_DEBUG "sym53c416: Reset received\n"); 348 current_command->SCp.phase = idle; 349 current_command->result = DID_RESET << 16; 350 spin_lock_irqsave(dev->host_lock, flags); 351 current_command->scsi_done(current_command); 352 spin_unlock_irqrestore(dev->host_lock, flags); 353 goto out; 354 } 355 if(int_reg & ILCMD) /* Illegal Command */ 356 { 357 printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG)); 358 current_command->SCp.phase = idle; 359 current_command->result = DID_ERROR << 16; 360 spin_lock_irqsave(dev->host_lock, flags); 361 current_command->scsi_done(current_command); 362 spin_unlock_irqrestore(dev->host_lock, flags); 363 goto out; 364 } 365 if(status_reg & GE) /* Gross Error */ 366 { 367 printk(KERN_WARNING "sym53c416: Controller reports gross error.\n"); 368 current_command->SCp.phase = idle; 369 current_command->result = DID_ERROR << 16; 370 spin_lock_irqsave(dev->host_lock, flags); 371 current_command->scsi_done(current_command); 372 spin_unlock_irqrestore(dev->host_lock, flags); 373 goto out; 374 } 375 if(status_reg & PE) /* Parity Error */ 376 { 377 printk(KERN_WARNING "sym53c416:SCSI parity error.\n"); 378 current_command->SCp.phase = idle; 379 current_command->result = DID_PARITY << 16; 380 spin_lock_irqsave(dev->host_lock, flags); 381 current_command->scsi_done(current_command); 382 spin_unlock_irqrestore(dev->host_lock, flags); 383 goto out; 384 } 385 if(pio_int_reg & (CE | OUE)) 386 { 387 printk(KERN_WARNING "sym53c416: PIO interrupt error.\n"); 388 current_command->SCp.phase = idle; 389 current_command->result = DID_ERROR << 16; 390 spin_lock_irqsave(dev->host_lock, flags); 391 current_command->scsi_done(current_command); 392 spin_unlock_irqrestore(dev->host_lock, flags); 393 goto out; 394 } 395 if(int_reg & DIS) /* Disconnect */ 396 { 397 if(current_command->SCp.phase != message_in) 398 current_command->result = DID_NO_CONNECT << 16; 399 else 400 current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16); 401 current_command->SCp.phase = idle; 402 spin_lock_irqsave(dev->host_lock, flags); 403 current_command->scsi_done(current_command); 404 spin_unlock_irqrestore(dev->host_lock, flags); 405 goto out; 406 } 407 /* Now we handle SCSI phases */ 408 409 switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */ 410 { 411 case PHASE_DATA_OUT: 412 { 413 if(int_reg & BS) 414 { 415 current_command->SCp.phase = data_out; 416 outb(FLUSH_FIFO, base + COMMAND_REG); 417 sym53c416_set_transfer_counter(base, 418 scsi_bufflen(current_command)); 419 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); 420 421 scsi_for_each_sg(current_command, 422 sg, scsi_sg_count(current_command), i) { 423 tot_trans += sym53c416_write(base, 424 SG_ADDRESS(sg), 425 sg->length); 426 } 427 if(tot_trans < current_command->underflow) 428 printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); 429 } 430 break; 431 } 432 433 case PHASE_DATA_IN: 434 { 435 if(int_reg & BS) 436 { 437 current_command->SCp.phase = data_in; 438 outb(FLUSH_FIFO, base + COMMAND_REG); 439 sym53c416_set_transfer_counter(base, 440 scsi_bufflen(current_command)); 441 442 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); 443 444 scsi_for_each_sg(current_command, 445 sg, scsi_sg_count(current_command), i) { 446 tot_trans += sym53c416_read(base, 447 SG_ADDRESS(sg), 448 sg->length); 449 } 450 if(tot_trans < current_command->underflow) 451 printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); 452 } 453 break; 454 } 455 456 case PHASE_COMMAND: 457 { 458 current_command->SCp.phase = command_ph; 459 printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n"); 460 break; 461 } 462 463 case PHASE_STATUS: 464 { 465 current_command->SCp.phase = status_ph; 466 outb(FLUSH_FIFO, base + COMMAND_REG); 467 outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG); 468 break; 469 } 470 471 case PHASE_RESERVED_1: 472 case PHASE_RESERVED_2: 473 { 474 printk(KERN_ERR "sym53c416: Reserved phase occurred.\n"); 475 break; 476 } 477 478 case PHASE_MESSAGE_OUT: 479 { 480 current_command->SCp.phase = message_out; 481 outb(SET_ATN, base + COMMAND_REG); 482 outb(MSG_ACCEPTED, base + COMMAND_REG); 483 break; 484 } 485 486 case PHASE_MESSAGE_IN: 487 { 488 current_command->SCp.phase = message_in; 489 current_command->SCp.Status = inb(base + SCSI_FIFO); 490 current_command->SCp.Message = inb(base + SCSI_FIFO); 491 if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT) 492 outb(SET_ATN, base + COMMAND_REG); 493 outb(MSG_ACCEPTED, base + COMMAND_REG); 494 break; 495 } 496 } 497out: 498 return IRQ_HANDLED; 499} 500 501static void sym53c416_init(int base, int scsi_id) 502{ 503 outb(RESET_CHIP, base + COMMAND_REG); 504 outb(NOOP, base + COMMAND_REG); 505 outb(0x99, base + TOM); /* Time out of 250 ms */ 506 outb(0x05, base + STP); 507 outb(0x00, base + SYNC_OFFSET); 508 outb(EPC | scsi_id, base + CONF_REG_1); 509 outb(FE | SCSI2 | TBPA, base + CONF_REG_2); 510 outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3); 511 outb(0x83 | EAN, base + CONF_REG_4); 512 outb(IE | WSE0, base + CONF_REG_5); 513 outb(0, base + FEATURE_EN); 514} 515 516static int sym53c416_probeirq(int base, int scsi_id) 517{ 518 int irq, irqs; 519 unsigned long i; 520 521 /* Clear interrupt register */ 522 inb(base + INT_REG); 523 /* Start probing for irq's */ 524 irqs = probe_irq_on(); 525 /* Reinit chip */ 526 sym53c416_init(base, scsi_id); 527 /* Cause interrupt */ 528 outb(NOOP, base + COMMAND_REG); 529 outb(ILLEGAL, base + COMMAND_REG); 530 outb(0x07, base + DEST_BUS_ID); 531 outb(0x00, base + DEST_BUS_ID); 532 /* Wait for interrupt to occur */ 533 i = jiffies + 20; 534 while(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI)) 535 barrier(); 536 if(time_before_eq(i, jiffies)) /* timed out */ 537 return 0; 538 /* Get occurred irq */ 539 irq = probe_irq_off(irqs); 540 sym53c416_init(base, scsi_id); 541 return irq; 542} 543 544/* Setup: sym53c416=base,irq */ 545void sym53c416_setup(char *str, int *ints) 546{ 547 int i; 548 549 if(host_index >= MAXHOSTS) 550 { 551 printk(KERN_WARNING "sym53c416: Too many hosts defined\n"); 552 return; 553 } 554 if(ints[0] < 1 || ints[0] > 2) 555 { 556 printk(KERN_ERR "sym53c416: Wrong number of parameters:\n"); 557 printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n"); 558 return; 559 } 560 for(i = 0; i < host_index && i >= 0; i++) 561 if(hosts[i].base == ints[1]) 562 i = -2; 563 if(i >= 0) 564 { 565 hosts[host_index].base = ints[1]; 566 hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0; 567 host_index++; 568 } 569} 570 571static int sym53c416_test(int base) 572{ 573 outb(RESET_CHIP, base + COMMAND_REG); 574 outb(NOOP, base + COMMAND_REG); 575 if(inb(base + COMMAND_REG) != NOOP) 576 return 0; 577 if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF) 578 return 0; 579 if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY) 580 return 0; 581 return 1; 582} 583 584 585static struct isapnp_device_id id_table[] __devinitdata = { 586 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, 587 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 }, 588 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, 589 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 }, 590 { ISAPNP_DEVICE_SINGLE_END } 591}; 592 593MODULE_DEVICE_TABLE(isapnp, id_table); 594 595static void sym53c416_probe(void) 596{ 597 int *base = probeaddrs; 598 int ints[2]; 599 600 ints[0] = 1; 601 for(; *base; base++) { 602 if (request_region(*base, IO_RANGE, ID)) { 603 if (sym53c416_test(*base)) { 604 ints[1] = *base; 605 sym53c416_setup(NULL, ints); 606 } 607 release_region(*base, IO_RANGE); 608 } 609 } 610} 611 612int __init sym53c416_detect(struct scsi_host_template *tpnt) 613{ 614 unsigned long flags; 615 struct Scsi_Host * shpnt = NULL; 616 int i; 617 int count; 618 struct pnp_dev *idev = NULL; 619 620#ifdef MODULE 621 int ints[3]; 622 623 ints[0] = 2; 624 if(sym53c416_base[0]) 625 { 626 ints[1] = sym53c416_base[0]; 627 ints[2] = sym53c416_base[1]; 628 sym53c416_setup(NULL, ints); 629 } 630 if(sym53c416_base_1[0]) 631 { 632 ints[1] = sym53c416_base_1[0]; 633 ints[2] = sym53c416_base_1[1]; 634 sym53c416_setup(NULL, ints); 635 } 636 if(sym53c416_base_2[0]) 637 { 638 ints[1] = sym53c416_base_2[0]; 639 ints[2] = sym53c416_base_2[1]; 640 sym53c416_setup(NULL, ints); 641 } 642 if(sym53c416_base_3[0]) 643 { 644 ints[1] = sym53c416_base_3[0]; 645 ints[2] = sym53c416_base_3[1]; 646 sym53c416_setup(NULL, ints); 647 } 648#endif 649 printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING); 650 651 for (i=0; id_table[i].vendor != 0; i++) { 652 while((idev=pnp_find_dev(NULL, id_table[i].vendor, 653 id_table[i].function, idev))!=NULL) 654 { 655 int i[3]; 656 657 if(pnp_device_attach(idev)<0) 658 { 659 printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n"); 660 continue; 661 } 662 if(pnp_activate_dev(idev) < 0) 663 { 664 printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n"); 665 pnp_device_detach(idev); 666 continue; 667 668 } 669 670 i[0] = 2; 671 i[1] = pnp_port_start(idev, 0); 672 i[2] = pnp_irq(idev, 0); 673 674 printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n", 675 i[1], i[2]); 676 sym53c416_setup(NULL, i); 677 } 678 } 679 sym53c416_probe(); 680 681 /* Now we register and set up each host adapter found... */ 682 for(count = 0, i = 0; i < host_index; i++) { 683 if (!request_region(hosts[i].base, IO_RANGE, ID)) 684 continue; 685 if (!sym53c416_test(hosts[i].base)) { 686 printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base); 687 goto fail_release_region; 688 } 689 690 /* We don't have an irq yet, so we should probe for one */ 691 if (!hosts[i].irq) 692 hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id); 693 if (!hosts[i].irq) 694 goto fail_release_region; 695 696 shpnt = scsi_register(tpnt, 0); 697 if (!shpnt) 698 goto fail_release_region; 699 /* Request for specified IRQ */ 700 if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt)) 701 goto fail_free_host; 702 703 spin_lock_irqsave(&sym53c416_lock, flags); 704 shpnt->unique_id = hosts[i].base; 705 shpnt->io_port = hosts[i].base; 706 shpnt->n_io_port = IO_RANGE; 707 shpnt->irq = hosts[i].irq; 708 shpnt->this_id = hosts[i].scsi_id; 709 sym53c416_init(hosts[i].base, hosts[i].scsi_id); 710 count++; 711 spin_unlock_irqrestore(&sym53c416_lock, flags); 712 continue; 713 714 fail_free_host: 715 scsi_unregister(shpnt); 716 fail_release_region: 717 release_region(hosts[i].base, IO_RANGE); 718 } 719 return count; 720} 721 722const char *sym53c416_info(struct Scsi_Host *SChost) 723{ 724 int i; 725 int base = SChost->io_port; 726 int irq = SChost->irq; 727 int scsi_id = 0; 728 int rev = inb(base + TC_HIGH); 729 730 for(i = 0; i < host_index; i++) 731 if(hosts[i].base == base) 732 scsi_id = hosts[i].scsi_id; 733 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"); 734 return info; 735} 736 737int sym53c416_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) 738{ 739 int base; 740 unsigned long flags = 0; 741 int i; 742 743 /* Store base register as we can have more than one controller in the system */ 744 base = SCpnt->device->host->io_port; 745 current_command = SCpnt; /* set current command */ 746 current_command->scsi_done = done; /* set ptr to done function */ 747 current_command->SCp.phase = command_ph; /* currect phase is the command phase */ 748 current_command->SCp.Status = 0; 749 current_command->SCp.Message = 0; 750 751 spin_lock_irqsave(&sym53c416_lock, flags); 752 outb(scmd_id(SCpnt), base + DEST_BUS_ID); /* Set scsi id target */ 753 outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */ 754 /* Write SCSI command into the SCSI fifo */ 755 for(i = 0; i < SCpnt->cmd_len; i++) 756 outb(SCpnt->cmnd[i], base + SCSI_FIFO); 757 /* Start selection sequence */ 758 outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG); 759 /* Now an interrupt will be generated which we will catch in out interrupt routine */ 760 spin_unlock_irqrestore(&sym53c416_lock, flags); 761 return 0; 762} 763 764static int sym53c416_host_reset(Scsi_Cmnd *SCpnt) 765{ 766 int base; 767 int scsi_id = -1; 768 int i; 769 unsigned long flags; 770 771 spin_lock_irqsave(&sym53c416_lock, flags); 772 773 /* printk("sym53c416_reset\n"); */ 774 base = SCpnt->device->host->io_port; 775 for(i = 0; i < host_index && scsi_id == -1; i++) 776 if(hosts[i].base == base) 777 scsi_id = hosts[i].scsi_id; 778 outb(RESET_CHIP, base + COMMAND_REG); 779 outb(NOOP | PIO_MODE, base + COMMAND_REG); 780 outb(RESET_SCSI_BUS, base + COMMAND_REG); 781 sym53c416_init(base, scsi_id); 782 783 spin_unlock_irqrestore(&sym53c416_lock, flags); 784 return SUCCESS; 785} 786 787static int sym53c416_release(struct Scsi_Host *shost) 788{ 789 if (shost->irq) 790 free_irq(shost->irq, shost); 791 if (shost->io_port && shost->n_io_port) 792 release_region(shost->io_port, shost->n_io_port); 793 return 0; 794} 795 796static int sym53c416_bios_param(struct scsi_device *sdev, 797 struct block_device *dev, 798 sector_t capacity, int *ip) 799{ 800 int size; 801 802 size = capacity; 803 ip[0] = 64; /* heads */ 804 ip[1] = 32; /* sectors */ 805 if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */ 806 { 807 ip[0] = 255; /* heads */ 808 ip[1] = 63; /* sectors */ 809 ip[2] = size / (255 * 63); /* cylinders */ 810 } 811 return 0; 812} 813 814/* Loadable module support */ 815#ifdef MODULE 816 817MODULE_AUTHOR("Lieven Willems"); 818MODULE_LICENSE("GPL"); 819 820module_param_array(sym53c416, uint, NULL, 0); 821module_param_array(sym53c416_1, uint, NULL, 0); 822module_param_array(sym53c416_2, uint, NULL, 0); 823module_param_array(sym53c416_3, uint, NULL, 0); 824 825#endif 826 827static struct scsi_host_template driver_template = { 828 .proc_name = "sym53c416", 829 .name = "Symbios Logic 53c416", 830 .detect = sym53c416_detect, 831 .info = sym53c416_info, 832 .queuecommand = sym53c416_queuecommand, 833 .eh_host_reset_handler =sym53c416_host_reset, 834 .release = sym53c416_release, 835 .bios_param = sym53c416_bios_param, 836 .can_queue = 1, 837 .this_id = SYM53C416_SCSI_ID, 838 .sg_tablesize = 32, 839 .cmd_per_lun = 1, 840 .unchecked_isa_dma = 1, 841 .use_clustering = ENABLE_CLUSTERING, 842}; 843#include "scsi_module.c" 844