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 int port_base = dev->io_port; 374 struct sym53c500_data *data = 375 (struct sym53c500_data *)dev->hostdata; 376 struct scsi_cmnd *curSC = data->current_SC; 377 int fast_pio = data->fast_pio; 378 379 spin_lock_irqsave(dev->host_lock, flags); 380 381 VDEB(printk("SYM53C500_intr called\n")); 382 383 REG1(port_base); 384 pio_status = inb(port_base + PIO_STATUS); 385 REG0(port_base); 386 status = inb(port_base + STAT_REG); 387 DEB(seq_reg = inb(port_base + SEQ_REG)); 388 int_reg = inb(port_base + INT_REG); 389 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); 390 391 #if SYM53C500_DEBUG 392 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 393 status, seq_reg, int_reg, fifo_size); 394 printk(", pio=%02x\n", pio_status); 395 #endif /* SYM53C500_DEBUG */ 396 397 if (int_reg & 0x80) { /* SCSI reset intr */ 398 DEB(printk("SYM53C500: reset intr received\n")); 399 curSC->result = DID_RESET << 16; 400 goto idle_out; 401 } 402 403 if (pio_status & 0x80) { 404 printk("SYM53C500: Warning: PIO error!\n"); 405 curSC->result = DID_ERROR << 16; 406 goto idle_out; 407 } 408 409 if (status & 0x20) { /* Parity error */ 410 printk("SYM53C500: Warning: parity error!\n"); 411 curSC->result = DID_PARITY << 16; 412 goto idle_out; 413 } 414 415 if (status & 0x40) { /* Gross error */ 416 printk("SYM53C500: Warning: gross error!\n"); 417 curSC->result = DID_ERROR << 16; 418 goto idle_out; 419 } 420 421 if (int_reg & 0x20) { /* Disconnect */ 422 DEB(printk("SYM53C500: disconnect intr received\n")); 423 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ 424 curSC->result = DID_NO_CONNECT << 16; 425 } else { /* Command complete, return status and message */ 426 curSC->result = (curSC->SCp.Status & 0xff) 427 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); 428 } 429 goto idle_out; 430 } 431 432 switch (status & 0x07) { /* scsi phase */ 433 case 0x00: /* DATA-OUT */ 434 if (int_reg & 0x10) { /* Target requesting info transfer */ 435 struct scatterlist *sg; 436 int i; 437 438 curSC->SCp.phase = data_out; 439 VDEB(printk("SYM53C500: Data-Out phase\n")); 440 outb(FLUSH_FIFO, port_base + CMD_REG); 441 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ 442 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 443 444 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { 445 SYM53C500_pio_write(fast_pio, port_base, 446 sg_virt(sg), sg->length); 447 } 448 REG0(port_base); 449 } 450 break; 451 452 case 0x01: /* DATA-IN */ 453 if (int_reg & 0x10) { /* Target requesting info transfer */ 454 struct scatterlist *sg; 455 int i; 456 457 curSC->SCp.phase = data_in; 458 VDEB(printk("SYM53C500: Data-In phase\n")); 459 outb(FLUSH_FIFO, port_base + CMD_REG); 460 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ 461 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 462 463 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { 464 SYM53C500_pio_read(fast_pio, port_base, 465 sg_virt(sg), sg->length); 466 } 467 REG0(port_base); 468 } 469 break; 470 471 case 0x02: /* COMMAND */ 472 curSC->SCp.phase = command_ph; 473 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); 474 break; 475 476 case 0x03: /* STATUS */ 477 curSC->SCp.phase = status_ph; 478 VDEB(printk("SYM53C500: Status phase\n")); 479 outb(FLUSH_FIFO, port_base + CMD_REG); 480 outb(INIT_CMD_COMPLETE, port_base + CMD_REG); 481 break; 482 483 case 0x04: /* Reserved */ 484 case 0x05: /* Reserved */ 485 printk("SYM53C500: WARNING: Reserved phase!!!\n"); 486 break; 487 488 case 0x06: /* MESSAGE-OUT */ 489 DEB(printk("SYM53C500: Message-Out phase\n")); 490 curSC->SCp.phase = message_out; 491 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ 492 outb(MSG_ACCEPT, port_base + CMD_REG); 493 break; 494 495 case 0x07: /* MESSAGE-IN */ 496 VDEB(printk("SYM53C500: Message-In phase\n")); 497 curSC->SCp.phase = message_in; 498 499 curSC->SCp.Status = inb(port_base + SCSI_FIFO); 500 curSC->SCp.Message = inb(port_base + SCSI_FIFO); 501 502 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); 503 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); 504 505 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { 506 outb(SET_ATN, port_base + CMD_REG); /* Reject message */ 507 DEB(printk("Discarding SAVE_POINTERS message\n")); 508 } 509 outb(MSG_ACCEPT, port_base + CMD_REG); 510 break; 511 } 512 out: 513 spin_unlock_irqrestore(dev->host_lock, flags); 514 return IRQ_HANDLED; 515 516 idle_out: 517 curSC->SCp.phase = idle; 518 curSC->scsi_done(curSC); 519 goto out; 520 } 521 522 static void 523 SYM53C500_release(struct pcmcia_device *link) 524 { 525 struct scsi_info_t *info = link->priv; 526 struct Scsi_Host *shost = info->host; 527 528 DEBUG(0, "SYM53C500_release(0x%p)\n", link); 529 530 /* 531 * Do this before releasing/freeing resources. 532 */ 533 scsi_remove_host(shost); 534 535 /* 536 * Interrupts getting hosed on card removal. Try 537 * the following code, mostly from qlogicfas.c. 538 */ 539 if (shost->irq) 540 free_irq(shost->irq, shost); 541 if (shost->io_port && shost->n_io_port) 542 release_region(shost->io_port, shost->n_io_port); 543 544 pcmcia_disable_device(link); 545 546 scsi_host_put(shost); 547 } /* SYM53C500_release */ 548 549 static const char* 550 SYM53C500_info(struct Scsi_Host *SChost) 551 { 552 static char info_msg[256]; 553 struct sym53c500_data *data = 554 (struct sym53c500_data *)SChost->hostdata; 555 556 DEB(printk("SYM53C500_info called\n")); 557 (void)snprintf(info_msg, sizeof(info_msg), 558 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 559 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); 560 return (info_msg); 561 } 562 563 static int 564 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) 565 { 566 int i; 567 int port_base = SCpnt->device->host->io_port; 568 struct sym53c500_data *data = 569 (struct sym53c500_data *)SCpnt->device->host->hostdata; 570 571 VDEB(printk("SYM53C500_queue called\n")); 572 573 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 574 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 575 SCpnt->device->lun, scsi_bufflen(SCpnt))); 576 577 VDEB(for (i = 0; i < SCpnt->cmd_len; i++) 578 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); 579 VDEB(printk("\n")); 580 581 data->current_SC = SCpnt; 582 data->current_SC->scsi_done = done; 583 data->current_SC->SCp.phase = command_ph; 584 data->current_SC->SCp.Status = 0; 585 data->current_SC->SCp.Message = 0; 586 587 /* We are locked here already by the mid layer */ 588 REG0(port_base); 589 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */ 590 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ 591 592 for (i = 0; i < SCpnt->cmd_len; i++) { 593 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); 594 } 595 outb(SELECT_NO_ATN, port_base + CMD_REG); 596 597 return 0; 598 } 599 600 static int 601 SYM53C500_host_reset(struct scsi_cmnd *SCpnt) 602 { 603 int port_base = SCpnt->device->host->io_port; 604 605 DEB(printk("SYM53C500_host_reset called\n")); 606 spin_lock_irq(SCpnt->device->host->host_lock); 607 SYM53C500_int_host_reset(port_base); 608 spin_unlock_irq(SCpnt->device->host->host_lock); 609 610 return SUCCESS; 611 } 612 613 static int 614 SYM53C500_biosparm(struct scsi_device *disk, 615 struct block_device *dev, 616 sector_t capacity, int *info_array) 617 { 618 int size; 619 620 DEB(printk("SYM53C500_biosparm called\n")); 621 622 size = capacity; 623 info_array[0] = 64; /* heads */ 624 info_array[1] = 32; /* sectors */ 625 info_array[2] = size >> 11; /* cylinders */ 626 if (info_array[2] > 1024) { /* big disk */ 627 info_array[0] = 255; 628 info_array[1] = 63; 629 info_array[2] = size / (255 * 63); 630 } 631 return 0; 632 } 633 634 static ssize_t 635 SYM53C500_show_pio(struct class_device *cdev, char *buf) 636 { 637 struct Scsi_Host *SHp = class_to_shost(cdev); 638 struct sym53c500_data *data = 639 (struct sym53c500_data *)SHp->hostdata; 640 641 return snprintf(buf, 4, "%d\n", data->fast_pio); 642 } 643 644 static ssize_t 645 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count) 646 { 647 int pio; 648 struct Scsi_Host *SHp = class_to_shost(cdev); 649 struct sym53c500_data *data = 650 (struct sym53c500_data *)SHp->hostdata; 651 652 pio = simple_strtoul(buf, NULL, 0); 653 if (pio == 0 || pio == 1) { 654 data->fast_pio = pio; 655 return count; 656 } 657 else 658 return -EINVAL; 659 } 660 661 /* 662 * SCSI HBA device attributes we want to 663 * make available via sysfs. 664 */ 665 static struct class_device_attribute SYM53C500_pio_attr = { 666 .attr = { 667 .name = "fast_pio", 668 .mode = (S_IRUGO | S_IWUSR), 669 }, 670 .show = SYM53C500_show_pio, 671 .store = SYM53C500_store_pio, 672 }; 673 674 static struct class_device_attribute *SYM53C500_shost_attrs[] = { 675 &SYM53C500_pio_attr, 676 NULL, 677 }; 678 679 /* 680 * scsi_host_template initializer 681 */ 682 static struct scsi_host_template sym53c500_driver_template = { 683 .module = THIS_MODULE, 684 .name = "SYM53C500", 685 .info = SYM53C500_info, 686 .queuecommand = SYM53C500_queue, 687 .eh_host_reset_handler = SYM53C500_host_reset, 688 .bios_param = SYM53C500_biosparm, 689 .proc_name = "SYM53C500", 690 .can_queue = 1, 691 .this_id = 7, 692 .sg_tablesize = 32, 693 .cmd_per_lun = 1, 694 .use_clustering = ENABLE_CLUSTERING, 695 .shost_attrs = SYM53C500_shost_attrs 696 }; 697 698 #define CS_CHECK(fn, ret) \ 699 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 700 701 static int 702 SYM53C500_config(struct pcmcia_device *link) 703 { 704 struct scsi_info_t *info = link->priv; 705 tuple_t tuple; 706 cisparse_t parse; 707 int i, last_ret, last_fn; 708 int irq_level, port_base; 709 unsigned short tuple_data[32]; 710 struct Scsi_Host *host; 711 struct scsi_host_template *tpnt = &sym53c500_driver_template; 712 struct sym53c500_data *data; 713 714 DEBUG(0, "SYM53C500_config(0x%p)\n", link); 715 716 info->manf_id = link->manf_id; 717 718 tuple.TupleData = (cisdata_t *)tuple_data; 719 tuple.TupleDataMax = 64; 720 tuple.TupleOffset = 0; 721 722 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 723 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); 724 while (1) { 725 if (pcmcia_get_tuple_data(link, &tuple) != 0 || 726 pcmcia_parse_tuple(link, &tuple, &parse) != 0) 727 goto next_entry; 728 link->conf.ConfigIndex = parse.cftable_entry.index; 729 link->io.BasePort1 = parse.cftable_entry.io.win[0].base; 730 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len; 731 732 if (link->io.BasePort1 != 0) { 733 i = pcmcia_request_io(link, &link->io); 734 if (i == CS_SUCCESS) 735 break; 736 } 737 next_entry: 738 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple)); 739 } 740 741 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); 742 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); 743 744 /* 745 * That's the trouble with copying liberally from another driver. 746 * Some things probably aren't relevant, and I suspect this entire 747 * section dealing with manufacturer IDs can be scrapped. --rct 748 */ 749 if ((info->manf_id == MANFID_MACNICA) || 750 (info->manf_id == MANFID_PIONEER) || 751 (info->manf_id == 0x0098)) { 752 /* set ATAcmd */ 753 outb(0xb4, link->io.BasePort1 + 0xd); 754 outb(0x24, link->io.BasePort1 + 0x9); 755 outb(0x04, link->io.BasePort1 + 0xd); 756 } 757 758 /* 759 * irq_level == 0 implies tpnt->can_queue == 0, which 760 * is not supported in 2.6. Thus, only irq_level > 0 761 * will be allowed. 762 * 763 * Possible port_base values are as follows: 764 * 765 * 0x130, 0x230, 0x280, 0x290, 766 * 0x320, 0x330, 0x340, 0x350 767 */ 768 port_base = link->io.BasePort1; 769 irq_level = link->irq.AssignedIRQ; 770 771 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", 772 port_base, irq_level, USE_FAST_PIO);) 773 774 chip_init(port_base); 775 776 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); 777 if (!host) { 778 printk("SYM53C500: Unable to register host, giving up.\n"); 779 goto err_release; 780 } 781 782 data = (struct sym53c500_data *)host->hostdata; 783 784 if (irq_level > 0) { 785 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) { 786 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); 787 goto err_free_scsi; 788 } 789 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); 790 } else if (irq_level == 0) { 791 DEB(printk("SYM53C500: No interrupts detected\n")); 792 goto err_free_scsi; 793 } else { 794 DEB(printk("SYM53C500: Shouldn't get here!\n")); 795 goto err_free_scsi; 796 } 797 798 host->unique_id = port_base; 799 host->irq = irq_level; 800 host->io_port = port_base; 801 host->n_io_port = 0x10; 802 host->dma_channel = -1; 803 804 /* 805 * Note fast_pio is set to USE_FAST_PIO by 806 * default, but can be changed via "sysfs". 807 */ 808 data->fast_pio = USE_FAST_PIO; 809 810 sprintf(info->node.dev_name, "scsi%d", host->host_no); 811 link->dev_node = &info->node; 812 info->host = host; 813 814 if (scsi_add_host(host, NULL)) 815 goto err_free_irq; 816 817 scsi_scan_host(host); 818 819 return 0; 820 821 err_free_irq: 822 free_irq(irq_level, host); 823 err_free_scsi: 824 scsi_host_put(host); 825 err_release: 826 release_region(port_base, 0x10); 827 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); 828 return -ENODEV; 829 830 cs_failed: 831 cs_error(link, last_fn, last_ret); 832 SYM53C500_release(link); 833 return -ENODEV; 834 } /* SYM53C500_config */ 835 836 static int sym53c500_resume(struct pcmcia_device *link) 837 { 838 struct scsi_info_t *info = link->priv; 839 840 /* See earlier comment about manufacturer IDs. */ 841 if ((info->manf_id == MANFID_MACNICA) || 842 (info->manf_id == MANFID_PIONEER) || 843 (info->manf_id == 0x0098)) { 844 outb(0x80, link->io.BasePort1 + 0xd); 845 outb(0x24, link->io.BasePort1 + 0x9); 846 outb(0x04, link->io.BasePort1 + 0xd); 847 } 848 /* 849 * If things don't work after a "resume", 850 * this is a good place to start looking. 851 */ 852 SYM53C500_int_host_reset(link->io.BasePort1); 853 854 return 0; 855 } 856 857 static void 858 SYM53C500_detach(struct pcmcia_device *link) 859 { 860 DEBUG(0, "SYM53C500_detach(0x%p)\n", link); 861 862 SYM53C500_release(link); 863 864 kfree(link->priv); 865 link->priv = NULL; 866 } /* SYM53C500_detach */ 867 868 static int 869 SYM53C500_probe(struct pcmcia_device *link) 870 { 871 struct scsi_info_t *info; 872 873 DEBUG(0, "SYM53C500_attach()\n"); 874 875 /* Create new SCSI device */ 876 info = kzalloc(sizeof(*info), GFP_KERNEL); 877 if (!info) 878 return -ENOMEM; 879 info->p_dev = link; 880 link->priv = info; 881 link->io.NumPorts1 = 16; 882 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; 883 link->io.IOAddrLines = 10; 884 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 885 link->irq.IRQInfo1 = IRQ_LEVEL_ID; 886 link->conf.Attributes = CONF_ENABLE_IRQ; 887 link->conf.IntType = INT_MEMORY_AND_IO; 888 889 return SYM53C500_config(link); 890 } /* SYM53C500_attach */ 891 892 MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); 893 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); 894 MODULE_LICENSE("GPL"); 895 896 static struct pcmcia_device_id sym53c500_ids[] = { 897 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7), 898 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8), 899 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44), 900 PCMCIA_DEVICE_NULL, 901 }; 902 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); 903 904 static struct pcmcia_driver sym53c500_cs_driver = { 905 .owner = THIS_MODULE, 906 .drv = { 907 .name = "sym53c500_cs", 908 }, 909 .probe = SYM53C500_probe, 910 .remove = SYM53C500_detach, 911 .id_table = sym53c500_ids, 912 .resume = sym53c500_resume, 913 }; 914 915 static int __init 916 init_sym53c500_cs(void) 917 { 918 return pcmcia_register_driver(&sym53c500_cs_driver); 919 } 920 921 static void __exit 922 exit_sym53c500_cs(void) 923 { 924 pcmcia_unregister_driver(&sym53c500_cs_driver); 925 } 926 927 module_init(init_sym53c500_cs); 928 module_exit(exit_sym53c500_cs); 929