1/* 2* sym53c500_cs.c Bob Tracy (rct@frus.com) 3* 4* A rewrite of the pcmcia-cs add-on driver for newer (circa 1997) 5* New Media Bus Toaster PCMCIA SCSI cards using the Symbios Logic 6* 53c500 controller: intended for use with 2.6 and later kernels. 7* The pcmcia-cs add-on version of this driver is not supported 8* beyond 2.4. It consisted of three files with history/copyright 9* information as follows: 10* 11* SYM53C500.h 12* Bob Tracy (rct@frus.com) 13* Original by Tom Corner (tcorner@via.at). 14* Adapted from NCR53c406a.h which is Copyrighted (C) 1994 15* Normunds Saumanis (normunds@rx.tech.swh.lv) 16* 17* SYM53C500.c 18* Bob Tracy (rct@frus.com) 19* Original driver by Tom Corner (tcorner@via.at) was adapted 20* from NCR53c406a.c which is Copyrighted (C) 1994, 1995, 1996 21* Normunds Saumanis (normunds@fi.ibm.com) 22* 23* sym53c500.c 24* Bob Tracy (rct@frus.com) 25* Original by Tom Corner (tcorner@via.at) was adapted from a 26* driver for the Qlogic SCSI card written by 27* David Hinds (dhinds@allegro.stanford.edu). 28* 29* This program is free software; you can redistribute it and/or modify it 30* under the terms of the GNU General Public License as published by the 31* Free Software Foundation; either version 2, or (at your option) any 32* later version. 33* 34* This program is distributed in the hope that it will be useful, but 35* WITHOUT ANY WARRANTY; without even the implied warranty of 36* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 37* General Public License for more details. 38*/ 39 40#define SYM53C500_DEBUG 0 41#define VERBOSE_SYM53C500_DEBUG 0 42 43/* 44* Set this to 0 if you encounter kernel lockups while transferring 45* data in PIO mode. Note this can be changed via "sysfs". 46*/ 47#define USE_FAST_PIO 1 48 49/* =============== End of user configurable parameters ============== */ 50 51#include <linux/module.h> 52#include <linux/moduleparam.h> 53#include <linux/errno.h> 54#include <linux/init.h> 55#include <linux/interrupt.h> 56#include <linux/kernel.h> 57#include <linux/slab.h> 58#include <linux/string.h> 59#include <linux/ioport.h> 60#include <linux/blkdev.h> 61#include <linux/spinlock.h> 62#include <linux/bitops.h> 63 64#include <asm/io.h> 65#include <asm/dma.h> 66#include <asm/irq.h> 67 68#include <scsi/scsi_ioctl.h> 69#include <scsi/scsi_cmnd.h> 70#include <scsi/scsi_device.h> 71#include <scsi/scsi.h> 72#include <scsi/scsi_host.h> 73 74#include <pcmcia/cs_types.h> 75#include <pcmcia/cs.h> 76#include <pcmcia/cistpl.h> 77#include <pcmcia/ds.h> 78#include <pcmcia/ciscode.h> 79 80/* ================================================================== */ 81 82#ifdef PCMCIA_DEBUG 83static int pc_debug = PCMCIA_DEBUG; 84module_param(pc_debug, int, 0); 85#define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) 86static char *version = 87"sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)"; 88#else 89#define DEBUG(n, args...) 90#endif 91 92/* ================================================================== */ 93 94#define SYNC_MODE 0 /* Synchronous transfer mode */ 95 96/* Default configuration */ 97#define C1_IMG 0x07 /* ID=7 */ 98#define C2_IMG 0x48 /* FE SCSI2 */ 99#define C3_IMG 0x20 /* CDB */ 100#define C4_IMG 0x04 /* ANE */ 101#define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */ 102#define C7_IMG 0x80 /* added for SYM53C500 t. corner */ 103 104/* Hardware Registers: offsets from io_port (base) */ 105 106/* Control Register Set 0 */ 107#define TC_LSB 0x00 /* transfer counter lsb */ 108#define TC_MSB 0x01 /* transfer counter msb */ 109#define SCSI_FIFO 0x02 /* scsi fifo register */ 110#define CMD_REG 0x03 /* command register */ 111#define STAT_REG 0x04 /* status register */ 112#define DEST_ID 0x04 /* selection/reselection bus id */ 113#define INT_REG 0x05 /* interrupt status register */ 114#define SRTIMOUT 0x05 /* select/reselect timeout reg */ 115#define SEQ_REG 0x06 /* sequence step register */ 116#define SYNCPRD 0x06 /* synchronous transfer period */ 117#define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ 118#define SYNCOFF 0x07 /* synchronous offset register */ 119#define CONFIG1 0x08 /* configuration register */ 120#define CLKCONV 0x09 /* clock conversion register */ 121/* #define TESTREG 0x0A */ /* test mode register */ 122#define CONFIG2 0x0B /* configuration 2 register */ 123#define CONFIG3 0x0C /* configuration 3 register */ 124#define CONFIG4 0x0D /* configuration 4 register */ 125#define TC_HIGH 0x0E /* transfer counter high */ 126/* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ 127 128/* Control Register Set 1 */ 129/* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ 130/* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ 131/* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ 132#define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ 133/* #define PIO_FIFO1 0x05 */ /* */ 134/* #define PIO_FIFO2 0x06 */ /* */ 135/* #define PIO_FIFO3 0x07 */ /* */ 136#define PIO_STATUS 0x08 /* PIO status (r/w) */ 137/* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ 138/* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ 139#define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ 140#define CONFIG5 0x09 /* configuration 5 register */ 141/* #define SIGNATURE 0x0E */ /* signature register (r) */ 142/* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ 143#define CONFIG7 0x0d 144 145/* select register set 0 */ 146#define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) 147/* select register set 1 */ 148#define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) 149 150#if SYM53C500_DEBUG 151#define DEB(x) x 152#else 153#define DEB(x) 154#endif 155 156#if VERBOSE_SYM53C500_DEBUG 157#define VDEB(x) x 158#else 159#define VDEB(x) 160#endif 161 162#define LOAD_DMA_COUNT(x, count) \ 163 outb(count & 0xff, (x) + TC_LSB); \ 164 outb((count >> 8) & 0xff, (x) + TC_MSB); \ 165 outb((count >> 16) & 0xff, (x) + TC_HIGH); 166 167/* Chip commands */ 168#define DMA_OP 0x80 169 170#define SCSI_NOP 0x00 171#define FLUSH_FIFO 0x01 172#define CHIP_RESET 0x02 173#define SCSI_RESET 0x03 174#define RESELECT 0x40 175#define SELECT_NO_ATN 0x41 176#define SELECT_ATN 0x42 177#define SELECT_ATN_STOP 0x43 178#define ENABLE_SEL 0x44 179#define DISABLE_SEL 0x45 180#define SELECT_ATN3 0x46 181#define RESELECT3 0x47 182#define TRANSFER_INFO 0x10 183#define INIT_CMD_COMPLETE 0x11 184#define MSG_ACCEPT 0x12 185#define TRANSFER_PAD 0x18 186#define SET_ATN 0x1a 187#define RESET_ATN 0x1b 188#define SEND_MSG 0x20 189#define SEND_STATUS 0x21 190#define SEND_DATA 0x22 191#define DISCONN_SEQ 0x23 192#define TERMINATE_SEQ 0x24 193#define TARG_CMD_COMPLETE 0x25 194#define DISCONN 0x27 195#define RECV_MSG 0x28 196#define RECV_CMD 0x29 197#define RECV_DATA 0x2a 198#define RECV_CMD_SEQ 0x2b 199#define TARGET_ABORT_DMA 0x04 200 201/* ================================================================== */ 202 203struct scsi_info_t { 204 struct pcmcia_device *p_dev; 205 dev_node_t node; 206 struct Scsi_Host *host; 207 unsigned short manf_id; 208}; 209 210/* 211* Repository for per-instance host data. 212*/ 213struct sym53c500_data { 214 struct scsi_cmnd *current_SC; 215 int fast_pio; 216}; 217 218enum Phase { 219 idle, 220 data_out, 221 data_in, 222 command_ph, 223 status_ph, 224 message_out, 225 message_in 226}; 227 228/* ================================================================== */ 229 230static void 231chip_init(int io_port) 232{ 233 REG1(io_port); 234 outb(0x01, io_port + PIO_STATUS); 235 outb(0x00, io_port + PIO_FLAG); 236 237 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 238 outb(C3_IMG, io_port + CONFIG3); 239 outb(C2_IMG, io_port + CONFIG2); 240 outb(C1_IMG, io_port + CONFIG1); 241 242 outb(0x05, io_port + CLKCONV); /* clock conversion factor */ 243 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */ 244 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */ 245 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ 246} 247 248static void 249SYM53C500_int_host_reset(int io_port) 250{ 251 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 252 outb(CHIP_RESET, io_port + CMD_REG); 253 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */ 254 outb(SCSI_RESET, io_port + CMD_REG); 255 chip_init(io_port); 256} 257 258static __inline__ int 259SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 260{ 261 int i; 262 int len; /* current scsi fifo size */ 263 264 REG1(base); 265 while (reqlen) { 266 i = inb(base + PIO_STATUS); 267 /* VDEB(printk("pio_status=%x\n", i)); */ 268 if (i & 0x80) 269 return 0; 270 271 switch (i & 0x1e) { 272 default: 273 case 0x10: /* fifo empty */ 274 len = 0; 275 break; 276 case 0x0: 277 len = 1; 278 break; 279 case 0x8: /* fifo 1/3 full */ 280 len = 42; 281 break; 282 case 0xc: /* fifo 2/3 full */ 283 len = 84; 284 break; 285 case 0xe: /* fifo full */ 286 len = 128; 287 break; 288 } 289 290 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ 291 return 0; 292 } 293 294 if (len) { 295 if (len > reqlen) 296 len = reqlen; 297 298 if (fast_pio && len > 3) { 299 insl(base + PIO_FIFO, request, len >> 2); 300 request += len & 0xfc; 301 reqlen -= len & 0xfc; 302 } else { 303 while (len--) { 304 *request++ = inb(base + PIO_FIFO); 305 reqlen--; 306 } 307 } 308 } 309 } 310 return 0; 311} 312 313static __inline__ int 314SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 315{ 316 int i = 0; 317 int len; /* current scsi fifo size */ 318 319 REG1(base); 320 while (reqlen && !(i & 0x40)) { 321 i = inb(base + PIO_STATUS); 322 /* VDEB(printk("pio_status=%x\n", i)); */ 323 if (i & 0x80) /* error */ 324 return 0; 325 326 switch (i & 0x1e) { 327 case 0x10: 328 len = 128; 329 break; 330 case 0x0: 331 len = 84; 332 break; 333 case 0x8: 334 len = 42; 335 break; 336 case 0xc: 337 len = 1; 338 break; 339 default: 340 case 0xe: 341 len = 0; 342 break; 343 } 344 345 if (len) { 346 if (len > reqlen) 347 len = reqlen; 348 349 if (fast_pio && len > 3) { 350 outsl(base + PIO_FIFO, request, len >> 2); 351 request += len & 0xfc; 352 reqlen -= len & 0xfc; 353 } else { 354 while (len--) { 355 outb(*request++, base + PIO_FIFO); 356 reqlen--; 357 } 358 } 359 } 360 } 361 return 0; 362} 363 364static irqreturn_t 365SYM53C500_intr(int irq, void *dev_id) 366{ 367 unsigned long flags; 368 struct Scsi_Host *dev = dev_id; 369 DEB(unsigned char fifo_size;) 370 DEB(unsigned char seq_reg;) 371 unsigned char status, int_reg; 372 unsigned char pio_status; 373 struct scatterlist *sglist; 374 unsigned int sgcount; 375 int port_base = dev->io_port; 376 struct sym53c500_data *data = 377 (struct sym53c500_data *)dev->hostdata; 378 struct scsi_cmnd *curSC = data->current_SC; 379 int fast_pio = data->fast_pio; 380 381 spin_lock_irqsave(dev->host_lock, flags); 382 383 VDEB(printk("SYM53C500_intr called\n")); 384 385 REG1(port_base); 386 pio_status = inb(port_base + PIO_STATUS); 387 REG0(port_base); 388 status = inb(port_base + STAT_REG); 389 DEB(seq_reg = inb(port_base + SEQ_REG)); 390 int_reg = inb(port_base + INT_REG); 391 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); 392 393#if SYM53C500_DEBUG 394 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 395 status, seq_reg, int_reg, fifo_size); 396 printk(", pio=%02x\n", pio_status); 397#endif /* SYM53C500_DEBUG */ 398 399 if (int_reg & 0x80) { /* SCSI reset intr */ 400 DEB(printk("SYM53C500: reset intr received\n")); 401 curSC->result = DID_RESET << 16; 402 goto idle_out; 403 } 404 405 if (pio_status & 0x80) { 406 printk("SYM53C500: Warning: PIO error!\n"); 407 curSC->result = DID_ERROR << 16; 408 goto idle_out; 409 } 410 411 if (status & 0x20) { /* Parity error */ 412 printk("SYM53C500: Warning: parity error!\n"); 413 curSC->result = DID_PARITY << 16; 414 goto idle_out; 415 } 416 417 if (status & 0x40) { /* Gross error */ 418 printk("SYM53C500: Warning: gross error!\n"); 419 curSC->result = DID_ERROR << 16; 420 goto idle_out; 421 } 422 423 if (int_reg & 0x20) { /* Disconnect */ 424 DEB(printk("SYM53C500: disconnect intr received\n")); 425 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ 426 curSC->result = DID_NO_CONNECT << 16; 427 } else { /* Command complete, return status and message */ 428 curSC->result = (curSC->SCp.Status & 0xff) 429 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); 430 } 431 goto idle_out; 432 } 433 434 switch (status & 0x07) { /* scsi phase */ 435 case 0x00: /* DATA-OUT */ 436 if (int_reg & 0x10) { /* Target requesting info transfer */ 437 curSC->SCp.phase = data_out; 438 VDEB(printk("SYM53C500: Data-Out phase\n")); 439 outb(FLUSH_FIFO, port_base + CMD_REG); 440 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ 441 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 442 if (!curSC->use_sg) /* Don't use scatter-gather */ 443 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); 444 else { /* use scatter-gather */ 445 sgcount = curSC->use_sg; 446 sglist = curSC->request_buffer; 447 while (sgcount--) { 448 SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); 449 sglist++; 450 } 451 } 452 REG0(port_base); 453 } 454 break; 455 456 case 0x01: /* DATA-IN */ 457 if (int_reg & 0x10) { /* Target requesting info transfer */ 458 curSC->SCp.phase = data_in; 459 VDEB(printk("SYM53C500: Data-In phase\n")); 460 outb(FLUSH_FIFO, port_base + CMD_REG); 461 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ 462 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 463 if (!curSC->use_sg) /* Don't use scatter-gather */ 464 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); 465 else { /* Use scatter-gather */ 466 sgcount = curSC->use_sg; 467 sglist = curSC->request_buffer; 468 while (sgcount--) { 469 SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); 470 sglist++; 471 } 472 } 473 REG0(port_base); 474 } 475 break; 476 477 case 0x02: /* COMMAND */ 478 curSC->SCp.phase = command_ph; 479 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); 480 break; 481 482 case 0x03: /* STATUS */ 483 curSC->SCp.phase = status_ph; 484 VDEB(printk("SYM53C500: Status phase\n")); 485 outb(FLUSH_FIFO, port_base + CMD_REG); 486 outb(INIT_CMD_COMPLETE, port_base + CMD_REG); 487 break; 488 489 case 0x04: /* Reserved */ 490 case 0x05: /* Reserved */ 491 printk("SYM53C500: WARNING: Reserved phase!!!\n"); 492 break; 493 494 case 0x06: /* MESSAGE-OUT */ 495 DEB(printk("SYM53C500: Message-Out phase\n")); 496 curSC->SCp.phase = message_out; 497 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ 498 outb(MSG_ACCEPT, port_base + CMD_REG); 499 break; 500 501 case 0x07: /* MESSAGE-IN */ 502 VDEB(printk("SYM53C500: Message-In phase\n")); 503 curSC->SCp.phase = message_in; 504 505 curSC->SCp.Status = inb(port_base + SCSI_FIFO); 506 curSC->SCp.Message = inb(port_base + SCSI_FIFO); 507 508 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); 509 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); 510 511 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { 512 outb(SET_ATN, port_base + CMD_REG); /* Reject message */ 513 DEB(printk("Discarding SAVE_POINTERS message\n")); 514 } 515 outb(MSG_ACCEPT, port_base + CMD_REG); 516 break; 517 } 518out: 519 spin_unlock_irqrestore(dev->host_lock, flags); 520 return IRQ_HANDLED; 521 522idle_out: 523 curSC->SCp.phase = idle; 524 curSC->scsi_done(curSC); 525 goto out; 526} 527 528static void 529SYM53C500_release(struct pcmcia_device *link) 530{ 531 struct scsi_info_t *info = link->priv; 532 struct Scsi_Host *shost = info->host; 533 534 DEBUG(0, "SYM53C500_release(0x%p)\n", link); 535 536 /* 537 * Do this before releasing/freeing resources. 538 */ 539 scsi_remove_host(shost); 540 541 /* 542 * Interrupts getting hosed on card removal. Try 543 * the following code, mostly from qlogicfas.c. 544 */ 545 if (shost->irq) 546 free_irq(shost->irq, shost); 547 if (shost->io_port && shost->n_io_port) 548 release_region(shost->io_port, shost->n_io_port); 549 550 pcmcia_disable_device(link); 551 552 scsi_host_put(shost); 553} /* SYM53C500_release */ 554 555static const char* 556SYM53C500_info(struct Scsi_Host *SChost) 557{ 558 static char info_msg[256]; 559 struct sym53c500_data *data = 560 (struct sym53c500_data *)SChost->hostdata; 561 562 DEB(printk("SYM53C500_info called\n")); 563 (void)snprintf(info_msg, sizeof(info_msg), 564 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 565 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); 566 return (info_msg); 567} 568 569static int 570SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) 571{ 572 int i; 573 int port_base = SCpnt->device->host->io_port; 574 struct sym53c500_data *data = 575 (struct sym53c500_data *)SCpnt->device->host->hostdata; 576 577 VDEB(printk("SYM53C500_queue called\n")); 578 579 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 580 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 581 SCpnt->device->lun, SCpnt->request_bufflen)); 582 583 VDEB(for (i = 0; i < SCpnt->cmd_len; i++) 584 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); 585 VDEB(printk("\n")); 586 587 data->current_SC = SCpnt; 588 data->current_SC->scsi_done = done; 589 data->current_SC->SCp.phase = command_ph; 590 data->current_SC->SCp.Status = 0; 591 data->current_SC->SCp.Message = 0; 592 593 /* We are locked here already by the mid layer */ 594 REG0(port_base); 595 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */ 596 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ 597 598 for (i = 0; i < SCpnt->cmd_len; i++) { 599 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); 600 } 601 outb(SELECT_NO_ATN, port_base + CMD_REG); 602 603 return 0; 604} 605 606static int 607SYM53C500_host_reset(struct scsi_cmnd *SCpnt) 608{ 609 int port_base = SCpnt->device->host->io_port; 610 611 DEB(printk("SYM53C500_host_reset called\n")); 612 spin_lock_irq(SCpnt->device->host->host_lock); 613 SYM53C500_int_host_reset(port_base); 614 spin_unlock_irq(SCpnt->device->host->host_lock); 615 616 return SUCCESS; 617} 618 619static int 620SYM53C500_biosparm(struct scsi_device *disk, 621 struct block_device *dev, 622 sector_t capacity, int *info_array) 623{ 624 int size; 625 626 DEB(printk("SYM53C500_biosparm called\n")); 627 628 size = capacity; 629 info_array[0] = 64; /* heads */ 630 info_array[1] = 32; /* sectors */ 631 info_array[2] = size >> 11; /* cylinders */ 632 if (info_array[2] > 1024) { /* big disk */ 633 info_array[0] = 255; 634 info_array[1] = 63; 635 info_array[2] = size / (255 * 63); 636 } 637 return 0; 638} 639 640static ssize_t 641SYM53C500_show_pio(struct class_device *cdev, char *buf) 642{ 643 struct Scsi_Host *SHp = class_to_shost(cdev); 644 struct sym53c500_data *data = 645 (struct sym53c500_data *)SHp->hostdata; 646 647 return snprintf(buf, 4, "%d\n", data->fast_pio); 648} 649 650static ssize_t 651SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count) 652{ 653 int pio; 654 struct Scsi_Host *SHp = class_to_shost(cdev); 655 struct sym53c500_data *data = 656 (struct sym53c500_data *)SHp->hostdata; 657 658 pio = simple_strtoul(buf, NULL, 0); 659 if (pio == 0 || pio == 1) { 660 data->fast_pio = pio; 661 return count; 662 } 663 else 664 return -EINVAL; 665} 666 667/* 668* SCSI HBA device attributes we want to 669* make available via sysfs. 670*/ 671static struct class_device_attribute SYM53C500_pio_attr = { 672 .attr = { 673 .name = "fast_pio", 674 .mode = (S_IRUGO | S_IWUSR), 675 }, 676 .show = SYM53C500_show_pio, 677 .store = SYM53C500_store_pio, 678}; 679 680static struct class_device_attribute *SYM53C500_shost_attrs[] = { 681 &SYM53C500_pio_attr, 682 NULL, 683}; 684 685/* 686* scsi_host_template initializer 687*/ 688static struct scsi_host_template sym53c500_driver_template = { 689 .module = THIS_MODULE, 690 .name = "SYM53C500", 691 .info = SYM53C500_info, 692 .queuecommand = SYM53C500_queue, 693 .eh_host_reset_handler = SYM53C500_host_reset, 694 .bios_param = SYM53C500_biosparm, 695 .proc_name = "SYM53C500", 696 .can_queue = 1, 697 .this_id = 7, 698 .sg_tablesize = 32, 699 .cmd_per_lun = 1, 700 .use_clustering = ENABLE_CLUSTERING, 701 .shost_attrs = SYM53C500_shost_attrs 702}; 703 704#define CS_CHECK(fn, ret) \ 705do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 706 707static int 708SYM53C500_config(struct pcmcia_device *link) 709{ 710 struct scsi_info_t *info = link->priv; 711 tuple_t tuple; 712 cisparse_t parse; 713 int i, last_ret, last_fn; 714 int irq_level, port_base; 715 unsigned short tuple_data[32]; 716 struct Scsi_Host *host; 717 struct scsi_host_template *tpnt = &sym53c500_driver_template; 718 struct sym53c500_data *data; 719 720 DEBUG(0, "SYM53C500_config(0x%p)\n", link); 721 722 info->manf_id = link->manf_id; 723 724 tuple.TupleData = (cisdata_t *)tuple_data; 725 tuple.TupleDataMax = 64; 726 tuple.TupleOffset = 0; 727 728 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 729 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); 730 while (1) { 731 if (pcmcia_get_tuple_data(link, &tuple) != 0 || 732 pcmcia_parse_tuple(link, &tuple, &parse) != 0) 733 goto next_entry; 734 link->conf.ConfigIndex = parse.cftable_entry.index; 735 link->io.BasePort1 = parse.cftable_entry.io.win[0].base; 736 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len; 737 738 if (link->io.BasePort1 != 0) { 739 i = pcmcia_request_io(link, &link->io); 740 if (i == CS_SUCCESS) 741 break; 742 } 743next_entry: 744 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple)); 745 } 746 747 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); 748 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); 749 750 /* 751 * That's the trouble with copying liberally from another driver. 752 * Some things probably aren't relevant, and I suspect this entire 753 * section dealing with manufacturer IDs can be scrapped. --rct 754 */ 755 if ((info->manf_id == MANFID_MACNICA) || 756 (info->manf_id == MANFID_PIONEER) || 757 (info->manf_id == 0x0098)) { 758 /* set ATAcmd */ 759 outb(0xb4, link->io.BasePort1 + 0xd); 760 outb(0x24, link->io.BasePort1 + 0x9); 761 outb(0x04, link->io.BasePort1 + 0xd); 762 } 763 764 /* 765 * irq_level == 0 implies tpnt->can_queue == 0, which 766 * is not supported in 2.6. Thus, only irq_level > 0 767 * will be allowed. 768 * 769 * Possible port_base values are as follows: 770 * 771 * 0x130, 0x230, 0x280, 0x290, 772 * 0x320, 0x330, 0x340, 0x350 773 */ 774 port_base = link->io.BasePort1; 775 irq_level = link->irq.AssignedIRQ; 776 777 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", 778 port_base, irq_level, USE_FAST_PIO);) 779 780 chip_init(port_base); 781 782 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); 783 if (!host) { 784 printk("SYM53C500: Unable to register host, giving up.\n"); 785 goto err_release; 786 } 787 788 data = (struct sym53c500_data *)host->hostdata; 789 790 if (irq_level > 0) { 791 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) { 792 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); 793 goto err_free_scsi; 794 } 795 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); 796 } else if (irq_level == 0) { 797 DEB(printk("SYM53C500: No interrupts detected\n")); 798 goto err_free_scsi; 799 } else { 800 DEB(printk("SYM53C500: Shouldn't get here!\n")); 801 goto err_free_scsi; 802 } 803 804 host->unique_id = port_base; 805 host->irq = irq_level; 806 host->io_port = port_base; 807 host->n_io_port = 0x10; 808 host->dma_channel = -1; 809 810 /* 811 * Note fast_pio is set to USE_FAST_PIO by 812 * default, but can be changed via "sysfs". 813 */ 814 data->fast_pio = USE_FAST_PIO; 815 816 sprintf(info->node.dev_name, "scsi%d", host->host_no); 817 link->dev_node = &info->node; 818 info->host = host; 819 820 if (scsi_add_host(host, NULL)) 821 goto err_free_irq; 822 823 scsi_scan_host(host); 824 825 return 0; 826 827err_free_irq: 828 free_irq(irq_level, host); 829err_free_scsi: 830 scsi_host_put(host); 831err_release: 832 release_region(port_base, 0x10); 833 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); 834 return -ENODEV; 835 836cs_failed: 837 cs_error(link, last_fn, last_ret); 838 SYM53C500_release(link); 839 return -ENODEV; 840} /* SYM53C500_config */ 841 842static int sym53c500_resume(struct pcmcia_device *link) 843{ 844 struct scsi_info_t *info = link->priv; 845 846 /* See earlier comment about manufacturer IDs. */ 847 if ((info->manf_id == MANFID_MACNICA) || 848 (info->manf_id == MANFID_PIONEER) || 849 (info->manf_id == 0x0098)) { 850 outb(0x80, link->io.BasePort1 + 0xd); 851 outb(0x24, link->io.BasePort1 + 0x9); 852 outb(0x04, link->io.BasePort1 + 0xd); 853 } 854 /* 855 * If things don't work after a "resume", 856 * this is a good place to start looking. 857 */ 858 SYM53C500_int_host_reset(link->io.BasePort1); 859 860 return 0; 861} 862 863static void 864SYM53C500_detach(struct pcmcia_device *link) 865{ 866 DEBUG(0, "SYM53C500_detach(0x%p)\n", link); 867 868 SYM53C500_release(link); 869 870 kfree(link->priv); 871 link->priv = NULL; 872} /* SYM53C500_detach */ 873 874static int 875SYM53C500_probe(struct pcmcia_device *link) 876{ 877 struct scsi_info_t *info; 878 879 DEBUG(0, "SYM53C500_attach()\n"); 880 881 /* Create new SCSI device */ 882 info = kmalloc(sizeof(*info), GFP_KERNEL); 883 if (!info) 884 return -ENOMEM; 885 memset(info, 0, sizeof(*info)); 886 info->p_dev = link; 887 link->priv = info; 888 link->io.NumPorts1 = 16; 889 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; 890 link->io.IOAddrLines = 10; 891 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 892 link->irq.IRQInfo1 = IRQ_LEVEL_ID; 893 link->conf.Attributes = CONF_ENABLE_IRQ; 894 link->conf.IntType = INT_MEMORY_AND_IO; 895 896 return SYM53C500_config(link); 897} /* SYM53C500_attach */ 898 899MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); 900MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); 901MODULE_LICENSE("GPL"); 902 903static struct pcmcia_device_id sym53c500_ids[] = { 904 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7), 905 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8), 906 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44), 907 PCMCIA_DEVICE_NULL, 908}; 909MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); 910 911static struct pcmcia_driver sym53c500_cs_driver = { 912 .owner = THIS_MODULE, 913 .drv = { 914 .name = "sym53c500_cs", 915 }, 916 .probe = SYM53C500_probe, 917 .remove = SYM53C500_detach, 918 .id_table = sym53c500_ids, 919 .resume = sym53c500_resume, 920}; 921 922static int __init 923init_sym53c500_cs(void) 924{ 925 return pcmcia_register_driver(&sym53c500_cs_driver); 926} 927 928static void __exit 929exit_sym53c500_cs(void) 930{ 931 pcmcia_unregister_driver(&sym53c500_cs_driver); 932} 933 934module_init(init_sym53c500_cs); 935module_exit(exit_sym53c500_cs); 936