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/io.h> 41#include <linux/blkdev.h> 42#include <linux/isapnp.h> 43#include "scsi.h" 44#include <scsi/scsi_host.h> 45#include "sym53c416.h" 46 47#define VERSION_STRING "Version 1.0.0-ac" 48 49#define TC_LOW 0x00 /* Transfer counter low */ 50#define TC_MID 0x01 /* Transfer counter mid */ 51#define SCSI_FIFO 0x02 /* SCSI FIFO register */ 52#define COMMAND_REG 0x03 /* Command Register */ 53#define STATUS_REG 0x04 /* Status Register (READ) */ 54#define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */ 55#define INT_REG 0x05 /* Interrupt Register (READ) */ 56#define TOM 0x05 /* Time out multiplier (WRITE) */ 57#define STP 0x06 /* Synchronous Transfer period */ 58#define SYNC_OFFSET 0x07 /* Synchronous Offset */ 59#define CONF_REG_1 0x08 /* Configuration register 1 */ 60#define CONF_REG_2 0x0B /* Configuration register 2 */ 61#define CONF_REG_3 0x0C /* Configuration register 3 */ 62#define CONF_REG_4 0x0D /* Configuration register 4 */ 63#define TC_HIGH 0x0E /* Transfer counter high */ 64#define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */ 65#define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */ 66#define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */ 67#define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */ 68#define PIO_FIFO_CNT 0x14 /* PIO FIFO count */ 69#define PIO_INT_REG 0x15 /* PIO interrupt register */ 70#define CONF_REG_5 0x16 /* Configuration register 5 */ 71#define FEATURE_EN 0x1D /* Feature Enable register */ 72 73/* Configuration register 1 entries: */ 74/* Bits 2-0: SCSI ID of host adapter */ 75#define SCM 0x80 /* Slow Cable Mode */ 76#define SRID 0x40 /* SCSI Reset Interrupt Disable */ 77#define PTM 0x20 /* Parity Test Mode */ 78#define EPC 0x10 /* Enable Parity Checking */ 79#define CTME 0x08 /* Special Test Mode */ 80 81/* Configuration register 2 entries: */ 82#define FE 0x40 /* Features Enable */ 83#define SCSI2 0x08 /* SCSI 2 Enable */ 84#define TBPA 0x04 /* Target Bad Parity Abort */ 85 86/* Configuration register 3 entries: */ 87#define IDMRC 0x80 /* ID Message Reserved Check */ 88#define QTE 0x40 /* Queue Tag Enable */ 89#define CDB10 0x20 /* Command Descriptor Block 10 */ 90#define FSCSI 0x10 /* FastSCSI */ 91#define FCLK 0x08 /* FastClock */ 92 93/* Configuration register 4 entries: */ 94#define RBS 0x08 /* Register bank select */ 95#define EAN 0x04 /* Enable Active Negotiation */ 96 97/* Configuration register 5 entries: */ 98#define LPSR 0x80 /* Lower Power SCSI Reset */ 99#define IE 0x20 /* Interrupt Enable */ 100#define LPM 0x02 /* Low Power Mode */ 101#define WSE0 0x01 /* 0WS Enable */ 102 103/* Interrupt register entries: */ 104#define SRST 0x80 /* SCSI Reset */ 105#define ILCMD 0x40 /* Illegal Command */ 106#define DIS 0x20 /* Disconnect */ 107#define BS 0x10 /* Bus Service */ 108#define FC 0x08 /* Function Complete */ 109#define RESEL 0x04 /* Reselected */ 110#define SI 0x03 /* Selection Interrupt */ 111 112/* Status Register Entries: */ 113#define SCI 0x80 /* SCSI Core Int */ 114#define GE 0x40 /* Gross Error */ 115#define PE 0x20 /* Parity Error */ 116#define TC 0x10 /* Terminal Count */ 117#define VGC 0x08 /* Valid Group Code */ 118#define PHBITS 0x07 /* Phase bits */ 119 120/* PIO Interrupt Register Entries: */ 121#define SCI 0x80 /* SCSI Core Int */ 122#define PFI 0x40 /* PIO FIFO Interrupt */ 123#define FULL 0x20 /* PIO FIFO Full */ 124#define EMPTY 0x10 /* PIO FIFO Empty */ 125#define CE 0x08 /* Collision Error */ 126#define OUE 0x04 /* Overflow / Underflow error */ 127#define FIE 0x02 /* Full Interrupt Enable */ 128#define EIE 0x01 /* Empty Interrupt Enable */ 129 130/* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */ 131#define PHASE_DATA_OUT 0x00 132#define PHASE_DATA_IN 0x01 133#define PHASE_COMMAND 0x02 134#define PHASE_STATUS 0x03 135#define PHASE_RESERVED_1 0x04 136#define PHASE_RESERVED_2 0x05 137#define PHASE_MESSAGE_OUT 0x06 138#define PHASE_MESSAGE_IN 0x07 139 140/* SYM53C416 core commands */ 141#define NOOP 0x00 142#define FLUSH_FIFO 0x01 143#define RESET_CHIP 0x02 144#define RESET_SCSI_BUS 0x03 145#define DISABLE_SEL_RESEL 0x45 146#define RESEL_SEQ 0x40 147#define SEL_WITHOUT_ATN_SEQ 0x41 148#define SEL_WITH_ATN_SEQ 0x42 149#define SEL_WITH_ATN_AND_STOP_SEQ 0x43 150#define ENABLE_SEL_RESEL 0x44 151#define SEL_WITH_ATN3_SEQ 0x46 152#define RESEL3_SEQ 0x47 153#define SND_MSG 0x20 154#define SND_STAT 0x21 155#define SND_DATA 0x22 156#define DISCONNECT_SEQ 0x23 157#define TERMINATE_SEQ 0x24 158#define TARGET_COMM_COMPLETE_SEQ 0x25 159#define DISCONN 0x27 160#define RECV_MSG_SEQ 0x28 161#define RECV_CMD 0x29 162#define RECV_DATA 0x2A 163#define RECV_CMD_SEQ 0x2B 164#define TARGET_ABORT_PIO 0x04 165#define TRANSFER_INFORMATION 0x10 166#define INIT_COMM_COMPLETE_SEQ 0x11 167#define MSG_ACCEPTED 0x12 168#define TRANSFER_PAD 0x18 169#define SET_ATN 0x1A 170#define RESET_ATN 0x1B 171#define ILLEGAL 0xFF 172 173#define PIO_MODE 0x80 174 175#define IO_RANGE 0x20 /* 0x00 - 0x1F */ 176#define ID "sym53c416" /* Attention: copied to the sym53c416.h */ 177#define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */ 178 179#define READ_TIMEOUT 150 180#define WRITE_TIMEOUT 150 181 182#ifdef MODULE 183 184#define sym53c416_base sym53c416 185#define sym53c416_base_1 sym53c416_1 186#define sym53c416_base_2 sym53c416_2 187#define sym53c416_base_3 sym53c416_3 188 189static unsigned int sym53c416_base[2]; 190static unsigned int sym53c416_base_1[2]; 191static unsigned int sym53c416_base_2[2]; 192static unsigned int sym53c416_base_3[2]; 193 194#endif 195 196#define MAXHOSTS 4 197 198#define SG_ADDRESS(buffer) ((char *) sg_virt((buffer))) 199 200enum phases 201{ 202 idle, 203 data_out, 204 data_in, 205 command_ph, 206 status_ph, 207 message_out, 208 message_in 209}; 210 211typedef struct 212{ 213 int base; 214 int irq; 215 int scsi_id; 216} host; 217 218static host hosts[MAXHOSTS] = { 219 {0, 0, SYM53C416_SCSI_ID}, 220 {0, 0, SYM53C416_SCSI_ID}, 221 {0, 0, SYM53C416_SCSI_ID}, 222 {0, 0, SYM53C416_SCSI_ID} 223 }; 224 225static int host_index = 0; 226static char info[120]; 227static Scsi_Cmnd *current_command = NULL; 228static int fastpio = 1; 229 230static int probeaddrs[] = {0x200, 0x220, 0x240, 0}; 231 232static void sym53c416_set_transfer_counter(int base, unsigned int len) 233{ 234 /* Program Transfer Counter */ 235 outb(len & 0x0000FF, base + TC_LOW); 236 outb((len & 0x00FF00) >> 8, base + TC_MID); 237 outb((len & 0xFF0000) >> 16, base + TC_HIGH); 238} 239 240static DEFINE_SPINLOCK(sym53c416_lock); 241 242/* Returns the number of bytes read */ 243static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len) 244{ 245 unsigned int orig_len = len; 246 unsigned long flags = 0; 247 unsigned int bytes_left; 248 unsigned long i; 249 int timeout = READ_TIMEOUT; 250 251 /* Do transfer */ 252 spin_lock_irqsave(&sym53c416_lock, flags); 253 while(len && timeout) 254 { 255 bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */ 256 if(fastpio && bytes_left > 3) 257 { 258 insl(base + PIO_FIFO_1, buffer, bytes_left >> 2); 259 buffer += bytes_left & 0xFC; 260 len -= bytes_left & 0xFC; 261 } 262 else if(bytes_left > 0) 263 { 264 len -= bytes_left; 265 for(; bytes_left > 0; bytes_left--) 266 *(buffer++) = inb(base + PIO_FIFO_1); 267 } 268 else 269 { 270 i = jiffies + timeout; 271 spin_unlock_irqrestore(&sym53c416_lock, flags); 272 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout) 273 if(inb(base + PIO_INT_REG) & SCI) 274 timeout = 0; 275 spin_lock_irqsave(&sym53c416_lock, flags); 276 if(inb(base + PIO_INT_REG) & EMPTY) 277 timeout = 0; 278 } 279 } 280 spin_unlock_irqrestore(&sym53c416_lock, flags); 281 return orig_len - len; 282} 283 284/* Returns the number of bytes written */ 285static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len) 286{ 287 unsigned int orig_len = len; 288 unsigned long flags = 0; 289 unsigned int bufferfree; 290 unsigned long i; 291 unsigned int timeout = WRITE_TIMEOUT; 292 293 /* Do transfer */ 294 spin_lock_irqsave(&sym53c416_lock, flags); 295 while(len && timeout) 296 { 297 bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT); 298 if(bufferfree > len) 299 bufferfree = len; 300 if(fastpio && bufferfree > 3) 301 { 302 outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2); 303 buffer += bufferfree & 0xFC; 304 len -= bufferfree & 0xFC; 305 } 306 else if(bufferfree > 0) 307 { 308 len -= bufferfree; 309 for(; bufferfree > 0; bufferfree--) 310 outb(*(buffer++), base + PIO_FIFO_1); 311 } 312 else 313 { 314 i = jiffies + timeout; 315 spin_unlock_irqrestore(&sym53c416_lock, flags); 316 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout) 317 ; 318 spin_lock_irqsave(&sym53c416_lock, flags); 319 if(inb(base + PIO_INT_REG) & FULL) 320 timeout = 0; 321 } 322 } 323 spin_unlock_irqrestore(&sym53c416_lock, flags); 324 return orig_len - len; 325} 326 327static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id) 328{ 329 struct Scsi_Host *dev = dev_id; 330 int base = dev->io_port; 331 int i; 332 unsigned long flags = 0; 333 unsigned char status_reg, pio_int_reg, int_reg; 334 struct scatterlist *sg; 335 unsigned int tot_trans = 0; 336 337 spin_lock_irqsave(dev->host_lock,flags); 338 status_reg = inb(base + STATUS_REG); 339 pio_int_reg = inb(base + PIO_INT_REG); 340 int_reg = inb(base + INT_REG); 341 spin_unlock_irqrestore(dev->host_lock, flags); 342 343 /* First, we handle error conditions */ 344 if(int_reg & SCI) /* SCSI Reset */ 345 { 346 printk(KERN_DEBUG "sym53c416: Reset received\n"); 347 current_command->SCp.phase = idle; 348 current_command->result = DID_RESET << 16; 349 spin_lock_irqsave(dev->host_lock, flags); 350 current_command->scsi_done(current_command); 351 spin_unlock_irqrestore(dev->host_lock, flags); 352 goto out; 353 } 354 if(int_reg & ILCMD) /* Illegal Command */ 355 { 356 printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG)); 357 current_command->SCp.phase = idle; 358 current_command->result = DID_ERROR << 16; 359 spin_lock_irqsave(dev->host_lock, flags); 360 current_command->scsi_done(current_command); 361 spin_unlock_irqrestore(dev->host_lock, flags); 362 goto out; 363 } 364 if(status_reg & GE) /* Gross Error */ 365 { 366 printk(KERN_WARNING "sym53c416: Controller reports gross error.\n"); 367 current_command->SCp.phase = idle; 368 current_command->result = DID_ERROR << 16; 369 spin_lock_irqsave(dev->host_lock, flags); 370 current_command->scsi_done(current_command); 371 spin_unlock_irqrestore(dev->host_lock, flags); 372 goto out; 373 } 374 if(status_reg & PE) /* Parity Error */ 375 { 376 printk(KERN_WARNING "sym53c416:SCSI parity error.\n"); 377 current_command->SCp.phase = idle; 378 current_command->result = DID_PARITY << 16; 379 spin_lock_irqsave(dev->host_lock, flags); 380 current_command->scsi_done(current_command); 381 spin_unlock_irqrestore(dev->host_lock, flags); 382 goto out; 383 } 384 if(pio_int_reg & (CE | OUE)) 385 { 386 printk(KERN_WARNING "sym53c416: PIO interrupt error.\n"); 387 current_command->SCp.phase = idle; 388 current_command->result = DID_ERROR << 16; 389 spin_lock_irqsave(dev->host_lock, flags); 390 current_command->scsi_done(current_command); 391 spin_unlock_irqrestore(dev->host_lock, flags); 392 goto out; 393 } 394 if(int_reg & DIS) /* Disconnect */ 395 { 396 if(current_command->SCp.phase != message_in) 397 current_command->result = DID_NO_CONNECT << 16; 398 else 399 current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16); 400 current_command->SCp.phase = idle; 401 spin_lock_irqsave(dev->host_lock, flags); 402 current_command->scsi_done(current_command); 403 spin_unlock_irqrestore(dev->host_lock, flags); 404 goto out; 405 } 406 /* Now we handle SCSI phases */ 407 408 switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */ 409 { 410 case PHASE_DATA_OUT: 411 { 412 if(int_reg & BS) 413 { 414 current_command->SCp.phase = data_out; 415 outb(FLUSH_FIFO, base + COMMAND_REG); 416 sym53c416_set_transfer_counter(base, 417 scsi_bufflen(current_command)); 418 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); 419 420 scsi_for_each_sg(current_command, 421 sg, scsi_sg_count(current_command), i) { 422 tot_trans += sym53c416_write(base, 423 SG_ADDRESS(sg), 424 sg->length); 425 } 426 if(tot_trans < current_command->underflow) 427 printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); 428 } 429 break; 430 } 431 432 case PHASE_DATA_IN: 433 { 434 if(int_reg & BS) 435 { 436 current_command->SCp.phase = data_in; 437 outb(FLUSH_FIFO, base + COMMAND_REG); 438 sym53c416_set_transfer_counter(base, 439 scsi_bufflen(current_command)); 440 441 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); 442 443 scsi_for_each_sg(current_command, 444 sg, scsi_sg_count(current_command), i) { 445 tot_trans += sym53c416_read(base, 446 SG_ADDRESS(sg), 447 sg->length); 448 } 449 if(tot_trans < current_command->underflow) 450 printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); 451 } 452 break; 453 } 454 455 case PHASE_COMMAND: 456 { 457 current_command->SCp.phase = command_ph; 458 printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n"); 459 break; 460 } 461 462 case PHASE_STATUS: 463 { 464 current_command->SCp.phase = status_ph; 465 outb(FLUSH_FIFO, base + COMMAND_REG); 466 outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG); 467 break; 468 } 469 470 case PHASE_RESERVED_1: 471 case PHASE_RESERVED_2: 472 { 473 printk(KERN_ERR "sym53c416: Reserved phase occurred.\n"); 474 break; 475 } 476 477 case PHASE_MESSAGE_OUT: 478 { 479 current_command->SCp.phase = message_out; 480 outb(SET_ATN, base + COMMAND_REG); 481 outb(MSG_ACCEPTED, base + COMMAND_REG); 482 break; 483 } 484 485 case PHASE_MESSAGE_IN: 486 { 487 current_command->SCp.phase = message_in; 488 current_command->SCp.Status = inb(base + SCSI_FIFO); 489 current_command->SCp.Message = inb(base + SCSI_FIFO); 490 if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT) 491 outb(SET_ATN, base + COMMAND_REG); 492 outb(MSG_ACCEPTED, base + COMMAND_REG); 493 break; 494 } 495 } 496out: 497 return IRQ_HANDLED; 498} 499 500static void sym53c416_init(int base, int scsi_id) 501{ 502 outb(RESET_CHIP, base + COMMAND_REG); 503 outb(NOOP, base + COMMAND_REG); 504 outb(0x99, base + TOM); /* Time out of 250 ms */ 505 outb(0x05, base + STP); 506 outb(0x00, base + SYNC_OFFSET); 507 outb(EPC | scsi_id, base + CONF_REG_1); 508 outb(FE | SCSI2 | TBPA, base + CONF_REG_2); 509 outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3); 510 outb(0x83 | EAN, base + CONF_REG_4); 511 outb(IE | WSE0, base + CONF_REG_5); 512 outb(0, base + FEATURE_EN); 513} 514 515static int sym53c416_probeirq(int base, int scsi_id) 516{ 517 int irq, irqs; 518 unsigned long i; 519 520 /* Clear interrupt register */ 521 inb(base + INT_REG); 522 /* Start probing for irq's */ 523 irqs = probe_irq_on(); 524 /* Reinit chip */ 525 sym53c416_init(base, scsi_id); 526 /* Cause interrupt */ 527 outb(NOOP, base + COMMAND_REG); 528 outb(ILLEGAL, base + COMMAND_REG); 529 outb(0x07, base + DEST_BUS_ID); 530 outb(0x00, base + DEST_BUS_ID); 531 /* Wait for interrupt to occur */ 532 i = jiffies + 20; 533 while(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI)) 534 barrier(); 535 if(time_before_eq(i, jiffies)) /* timed out */ 536 return 0; 537 /* Get occurred irq */ 538 irq = probe_irq_off(irqs); 539 sym53c416_init(base, scsi_id); 540 return irq; 541} 542 543/* Setup: sym53c416=base,irq */ 544void sym53c416_setup(char *str, int *ints) 545{ 546 int i; 547 548 if(host_index >= MAXHOSTS) 549 { 550 printk(KERN_WARNING "sym53c416: Too many hosts defined\n"); 551 return; 552 } 553 if(ints[0] < 1 || ints[0] > 2) 554 { 555 printk(KERN_ERR "sym53c416: Wrong number of parameters:\n"); 556 printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n"); 557 return; 558 } 559 for(i = 0; i < host_index && i >= 0; i++) 560 if(hosts[i].base == ints[1]) 561 i = -2; 562 if(i >= 0) 563 { 564 hosts[host_index].base = ints[1]; 565 hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0; 566 host_index++; 567 } 568} 569 570static int sym53c416_test(int base) 571{ 572 outb(RESET_CHIP, base + COMMAND_REG); 573 outb(NOOP, base + COMMAND_REG); 574 if(inb(base + COMMAND_REG) != NOOP) 575 return 0; 576 if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF) 577 return 0; 578 if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY) 579 return 0; 580 return 1; 581} 582 583 584static struct isapnp_device_id id_table[] = { 585 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, 586 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 }, 587 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, 588 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 }, 589 { ISAPNP_DEVICE_SINGLE_END } 590}; 591 592MODULE_DEVICE_TABLE(isapnp, id_table); 593 594static void sym53c416_probe(void) 595{ 596 int *base = probeaddrs; 597 int ints[2]; 598 599 ints[0] = 1; 600 for(; *base; base++) { 601 if (request_region(*base, IO_RANGE, ID)) { 602 if (sym53c416_test(*base)) { 603 ints[1] = *base; 604 sym53c416_setup(NULL, ints); 605 } 606 release_region(*base, IO_RANGE); 607 } 608 } 609} 610 611int __init sym53c416_detect(struct scsi_host_template *tpnt) 612{ 613 unsigned long flags; 614 struct Scsi_Host * shpnt = NULL; 615 int i; 616 int count; 617 struct pnp_dev *idev = NULL; 618 619#ifdef MODULE 620 int ints[3]; 621 622 ints[0] = 2; 623 if(sym53c416_base[0]) 624 { 625 ints[1] = sym53c416_base[0]; 626 ints[2] = sym53c416_base[1]; 627 sym53c416_setup(NULL, ints); 628 } 629 if(sym53c416_base_1[0]) 630 { 631 ints[1] = sym53c416_base_1[0]; 632 ints[2] = sym53c416_base_1[1]; 633 sym53c416_setup(NULL, ints); 634 } 635 if(sym53c416_base_2[0]) 636 { 637 ints[1] = sym53c416_base_2[0]; 638 ints[2] = sym53c416_base_2[1]; 639 sym53c416_setup(NULL, ints); 640 } 641 if(sym53c416_base_3[0]) 642 { 643 ints[1] = sym53c416_base_3[0]; 644 ints[2] = sym53c416_base_3[1]; 645 sym53c416_setup(NULL, ints); 646 } 647#endif 648 printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING); 649 650 for (i=0; id_table[i].vendor != 0; i++) { 651 while((idev=pnp_find_dev(NULL, id_table[i].vendor, 652 id_table[i].function, idev))!=NULL) 653 { 654 int i[3]; 655 656 if(pnp_device_attach(idev)<0) 657 { 658 printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n"); 659 continue; 660 } 661 if(pnp_activate_dev(idev) < 0) 662 { 663 printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n"); 664 pnp_device_detach(idev); 665 continue; 666 667 } 668 669 i[0] = 2; 670 i[1] = pnp_port_start(idev, 0); 671 i[2] = pnp_irq(idev, 0); 672 673 printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n", 674 i[1], i[2]); 675 sym53c416_setup(NULL, i); 676 } 677 } 678 sym53c416_probe(); 679 680 /* Now we register and set up each host adapter found... */ 681 for(count = 0, i = 0; i < host_index; i++) { 682 if (!request_region(hosts[i].base, IO_RANGE, ID)) 683 continue; 684 if (!sym53c416_test(hosts[i].base)) { 685 printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base); 686 goto fail_release_region; 687 } 688 689 /* We don't have an irq yet, so we should probe for one */ 690 if (!hosts[i].irq) 691 hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id); 692 if (!hosts[i].irq) 693 goto fail_release_region; 694 695 shpnt = scsi_register(tpnt, 0); 696 if (!shpnt) 697 goto fail_release_region; 698 /* Request for specified IRQ */ 699 if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt)) 700 goto fail_free_host; 701 702 spin_lock_irqsave(&sym53c416_lock, flags); 703 shpnt->unique_id = hosts[i].base; 704 shpnt->io_port = hosts[i].base; 705 shpnt->n_io_port = IO_RANGE; 706 shpnt->irq = hosts[i].irq; 707 shpnt->this_id = hosts[i].scsi_id; 708 sym53c416_init(hosts[i].base, hosts[i].scsi_id); 709 count++; 710 spin_unlock_irqrestore(&sym53c416_lock, flags); 711 continue; 712 713 fail_free_host: 714 scsi_unregister(shpnt); 715 fail_release_region: 716 release_region(hosts[i].base, IO_RANGE); 717 } 718 return count; 719} 720 721const char *sym53c416_info(struct Scsi_Host *SChost) 722{ 723 int i; 724 int base = SChost->io_port; 725 int irq = SChost->irq; 726 int scsi_id = 0; 727 int rev = inb(base + TC_HIGH); 728 729 for(i = 0; i < host_index; i++) 730 if(hosts[i].base == base) 731 scsi_id = hosts[i].scsi_id; 732 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"); 733 return info; 734} 735 736static int sym53c416_queuecommand_lck(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) 737{ 738 int base; 739 unsigned long flags = 0; 740 int i; 741 742 /* Store base register as we can have more than one controller in the system */ 743 base = SCpnt->device->host->io_port; 744 current_command = SCpnt; /* set current command */ 745 current_command->scsi_done = done; /* set ptr to done function */ 746 current_command->SCp.phase = command_ph; /* currect phase is the command phase */ 747 current_command->SCp.Status = 0; 748 current_command->SCp.Message = 0; 749 750 spin_lock_irqsave(&sym53c416_lock, flags); 751 outb(scmd_id(SCpnt), base + DEST_BUS_ID); /* Set scsi id target */ 752 outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */ 753 /* Write SCSI command into the SCSI fifo */ 754 for(i = 0; i < SCpnt->cmd_len; i++) 755 outb(SCpnt->cmnd[i], base + SCSI_FIFO); 756 /* Start selection sequence */ 757 outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG); 758 /* Now an interrupt will be generated which we will catch in out interrupt routine */ 759 spin_unlock_irqrestore(&sym53c416_lock, flags); 760 return 0; 761} 762 763DEF_SCSI_QCMD(sym53c416_queuecommand) 764 765static int sym53c416_host_reset(Scsi_Cmnd *SCpnt) 766{ 767 int base; 768 int scsi_id = -1; 769 int i; 770 unsigned long flags; 771 772 spin_lock_irqsave(&sym53c416_lock, flags); 773 774 /* printk("sym53c416_reset\n"); */ 775 base = SCpnt->device->host->io_port; 776 /* search scsi_id - fixme, we shouldn't need to iterate for this! */ 777 for(i = 0; i < host_index && scsi_id == -1; i++) 778 if(hosts[i].base == base) 779 scsi_id = hosts[i].scsi_id; 780 outb(RESET_CHIP, base + COMMAND_REG); 781 outb(NOOP | PIO_MODE, base + COMMAND_REG); 782 outb(RESET_SCSI_BUS, base + COMMAND_REG); 783 sym53c416_init(base, scsi_id); 784 785 spin_unlock_irqrestore(&sym53c416_lock, flags); 786 return SUCCESS; 787} 788 789static int sym53c416_release(struct Scsi_Host *shost) 790{ 791 if (shost->irq) 792 free_irq(shost->irq, shost); 793 if (shost->io_port && shost->n_io_port) 794 release_region(shost->io_port, shost->n_io_port); 795 return 0; 796} 797 798static int sym53c416_bios_param(struct scsi_device *sdev, 799 struct block_device *dev, 800 sector_t capacity, int *ip) 801{ 802 int size; 803 804 size = capacity; 805 ip[0] = 64; /* heads */ 806 ip[1] = 32; /* sectors */ 807 if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */ 808 { 809 ip[0] = 255; /* heads */ 810 ip[1] = 63; /* sectors */ 811 ip[2] = size / (255 * 63); /* cylinders */ 812 } 813 return 0; 814} 815 816/* Loadable module support */ 817#ifdef MODULE 818 819MODULE_AUTHOR("Lieven Willems"); 820MODULE_LICENSE("GPL"); 821 822module_param_array(sym53c416, uint, NULL, 0); 823module_param_array(sym53c416_1, uint, NULL, 0); 824module_param_array(sym53c416_2, uint, NULL, 0); 825module_param_array(sym53c416_3, uint, NULL, 0); 826 827#endif 828 829static struct scsi_host_template driver_template = { 830 .proc_name = "sym53c416", 831 .name = "Symbios Logic 53c416", 832 .detect = sym53c416_detect, 833 .info = sym53c416_info, 834 .queuecommand = sym53c416_queuecommand, 835 .eh_host_reset_handler =sym53c416_host_reset, 836 .release = sym53c416_release, 837 .bios_param = sym53c416_bios_param, 838 .can_queue = 1, 839 .this_id = SYM53C416_SCSI_ID, 840 .sg_tablesize = 32, 841 .cmd_per_lun = 1, 842 .unchecked_isa_dma = 1, 843 .use_clustering = ENABLE_CLUSTERING, 844}; 845#include "scsi_module.c" 846