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 83 static int pc_debug = PCMCIA_DEBUG; 84 module_param(pc_debug, int, 0); 85 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) 86 static 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 /* ================================================================== */ 202 203 struct 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 */ 213 struct sym53c500_data { 214 struct scsi_cmnd *current_SC; 215 int fast_pio; 216 }; 217 218 enum Phase { 219 idle, 220 data_out, 221 data_in, 222 command_ph, 223 status_ph, 224 message_out, 225 message_in 226 }; 227 228 /* ================================================================== */ 229 230 static void 231 chip_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 } 247 248 static void 249 SYM53C500_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 } 257 258 static __inline__ int 259 SYM53C500_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 } 312 313 static __inline__ int 314 SYM53C500_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 } 363 364 static irqreturn_t 365 SYM53C500_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 } 518 out: 519 spin_unlock_irqrestore(dev->host_lock, flags); 520 return IRQ_HANDLED; 521 522 idle_out: 523 curSC->SCp.phase = idle; 524 curSC->scsi_done(curSC); 525 goto out; 526 } 527 528 static void 529 SYM53C500_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 */ 554 555 static const char* 556 SYM53C500_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 } 568 569 static int 570 SYM53C500_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 } 605 606 static int 607 SYM53C500_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 } 618 619 static int 620 SYM53C500_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 } 639 640 static ssize_t 641 SYM53C500_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 } 649 650 static ssize_t 651 SYM53C500_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 */ 671 static 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 }; 679 680 static struct class_device_attribute *SYM53C500_shost_attrs[] = { 681 &SYM53C500_pio_attr, 682 NULL, 683 }; 684 685 /* 686 * scsi_host_template initializer 687 */ 688 static 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) \ 705 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 706 707 static int 708 SYM53C500_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 } 743 next_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; 826 827 err_free_irq: 828 free_irq(irq_level, host); 829 err_free_scsi: 830 scsi_host_put(host); 831 err_release: 832 release_region(port_base, 0x10); 833 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); 834 return -ENODEV; 835 836 cs_failed: 837 cs_error(link, last_fn, last_ret); 838 SYM53C500_release(link); 839 return -ENODEV; 840 } /* SYM53C500_config */ 841 842 static 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 } 862 863 static void 864 SYM53C500_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 */ 873 874 static int 875 SYM53C500_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 */ 898 899 MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); 900 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); 901 MODULE_LICENSE("GPL"); 902 903 static 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 }; 909 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); 910 911 static 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 }; 921 922 static int __init 923 init_sym53c500_cs(void) 924 { 925 return pcmcia_register_driver(&sym53c500_cs_driver); 926 } 927 928 static void __exit 929 exit_sym53c500_cs(void) 930 { 931 pcmcia_unregister_driver(&sym53c500_cs_driver); 932 } 933 934 module_init(init_sym53c500_cs); 935 module_exit(exit_sym53c500_cs); 936