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.h> 75 #include <pcmcia/cistpl.h> 76 #include <pcmcia/ds.h> 77 #include <pcmcia/ciscode.h> 78 79 80 /* ================================================================== */ 81 82 #define SYNC_MODE 0 /* Synchronous transfer mode */ 83 84 /* Default configuration */ 85 #define C1_IMG 0x07 /* ID=7 */ 86 #define C2_IMG 0x48 /* FE SCSI2 */ 87 #define C3_IMG 0x20 /* CDB */ 88 #define C4_IMG 0x04 /* ANE */ 89 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */ 90 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */ 91 92 /* Hardware Registers: offsets from io_port (base) */ 93 94 /* Control Register Set 0 */ 95 #define TC_LSB 0x00 /* transfer counter lsb */ 96 #define TC_MSB 0x01 /* transfer counter msb */ 97 #define SCSI_FIFO 0x02 /* scsi fifo register */ 98 #define CMD_REG 0x03 /* command register */ 99 #define STAT_REG 0x04 /* status register */ 100 #define DEST_ID 0x04 /* selection/reselection bus id */ 101 #define INT_REG 0x05 /* interrupt status register */ 102 #define SRTIMOUT 0x05 /* select/reselect timeout reg */ 103 #define SEQ_REG 0x06 /* sequence step register */ 104 #define SYNCPRD 0x06 /* synchronous transfer period */ 105 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ 106 #define SYNCOFF 0x07 /* synchronous offset register */ 107 #define CONFIG1 0x08 /* configuration register */ 108 #define CLKCONV 0x09 /* clock conversion register */ 109 /* #define TESTREG 0x0A */ /* test mode register */ 110 #define CONFIG2 0x0B /* configuration 2 register */ 111 #define CONFIG3 0x0C /* configuration 3 register */ 112 #define CONFIG4 0x0D /* configuration 4 register */ 113 #define TC_HIGH 0x0E /* transfer counter high */ 114 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ 115 116 /* Control Register Set 1 */ 117 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ 118 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ 119 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ 120 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ 121 /* #define PIO_FIFO1 0x05 */ /* */ 122 /* #define PIO_FIFO2 0x06 */ /* */ 123 /* #define PIO_FIFO3 0x07 */ /* */ 124 #define PIO_STATUS 0x08 /* PIO status (r/w) */ 125 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ 126 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ 127 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ 128 #define CONFIG5 0x09 /* configuration 5 register */ 129 /* #define SIGNATURE 0x0E */ /* signature register (r) */ 130 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ 131 #define CONFIG7 0x0d 132 133 /* select register set 0 */ 134 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) 135 /* select register set 1 */ 136 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) 137 138 #if SYM53C500_DEBUG 139 #define DEB(x) x 140 #else 141 #define DEB(x) 142 #endif 143 144 #if VERBOSE_SYM53C500_DEBUG 145 #define VDEB(x) x 146 #else 147 #define VDEB(x) 148 #endif 149 150 #define LOAD_DMA_COUNT(x, count) \ 151 outb(count & 0xff, (x) + TC_LSB); \ 152 outb((count >> 8) & 0xff, (x) + TC_MSB); \ 153 outb((count >> 16) & 0xff, (x) + TC_HIGH); 154 155 /* Chip commands */ 156 #define DMA_OP 0x80 157 158 #define SCSI_NOP 0x00 159 #define FLUSH_FIFO 0x01 160 #define CHIP_RESET 0x02 161 #define SCSI_RESET 0x03 162 #define RESELECT 0x40 163 #define SELECT_NO_ATN 0x41 164 #define SELECT_ATN 0x42 165 #define SELECT_ATN_STOP 0x43 166 #define ENABLE_SEL 0x44 167 #define DISABLE_SEL 0x45 168 #define SELECT_ATN3 0x46 169 #define RESELECT3 0x47 170 #define TRANSFER_INFO 0x10 171 #define INIT_CMD_COMPLETE 0x11 172 #define MSG_ACCEPT 0x12 173 #define TRANSFER_PAD 0x18 174 #define SET_ATN 0x1a 175 #define RESET_ATN 0x1b 176 #define SEND_MSG 0x20 177 #define SEND_STATUS 0x21 178 #define SEND_DATA 0x22 179 #define DISCONN_SEQ 0x23 180 #define TERMINATE_SEQ 0x24 181 #define TARG_CMD_COMPLETE 0x25 182 #define DISCONN 0x27 183 #define RECV_MSG 0x28 184 #define RECV_CMD 0x29 185 #define RECV_DATA 0x2a 186 #define RECV_CMD_SEQ 0x2b 187 #define TARGET_ABORT_DMA 0x04 188 189 /* ================================================================== */ 190 191 struct scsi_info_t { 192 struct pcmcia_device *p_dev; 193 struct Scsi_Host *host; 194 unsigned short manf_id; 195 }; 196 197 /* 198 * Repository for per-instance host data. 199 */ 200 struct sym53c500_data { 201 struct scsi_cmnd *current_SC; 202 int fast_pio; 203 }; 204 205 enum Phase { 206 idle, 207 data_out, 208 data_in, 209 command_ph, 210 status_ph, 211 message_out, 212 message_in 213 }; 214 215 /* ================================================================== */ 216 217 static void 218 chip_init(int io_port) 219 { 220 REG1(io_port); 221 outb(0x01, io_port + PIO_STATUS); 222 outb(0x00, io_port + PIO_FLAG); 223 224 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 225 outb(C3_IMG, io_port + CONFIG3); 226 outb(C2_IMG, io_port + CONFIG2); 227 outb(C1_IMG, io_port + CONFIG1); 228 229 outb(0x05, io_port + CLKCONV); /* clock conversion factor */ 230 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */ 231 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */ 232 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ 233 } 234 235 static void 236 SYM53C500_int_host_reset(int io_port) 237 { 238 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 239 outb(CHIP_RESET, io_port + CMD_REG); 240 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */ 241 outb(SCSI_RESET, io_port + CMD_REG); 242 chip_init(io_port); 243 } 244 245 static __inline__ int 246 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 247 { 248 int i; 249 int len; /* current scsi fifo size */ 250 251 REG1(base); 252 while (reqlen) { 253 i = inb(base + PIO_STATUS); 254 /* VDEB(printk("pio_status=%x\n", i)); */ 255 if (i & 0x80) 256 return 0; 257 258 switch (i & 0x1e) { 259 default: 260 case 0x10: /* fifo empty */ 261 len = 0; 262 break; 263 case 0x0: 264 len = 1; 265 break; 266 case 0x8: /* fifo 1/3 full */ 267 len = 42; 268 break; 269 case 0xc: /* fifo 2/3 full */ 270 len = 84; 271 break; 272 case 0xe: /* fifo full */ 273 len = 128; 274 break; 275 } 276 277 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ 278 return 0; 279 } 280 281 if (len) { 282 if (len > reqlen) 283 len = reqlen; 284 285 if (fast_pio && len > 3) { 286 insl(base + PIO_FIFO, request, len >> 2); 287 request += len & 0xfc; 288 reqlen -= len & 0xfc; 289 } else { 290 while (len--) { 291 *request++ = inb(base + PIO_FIFO); 292 reqlen--; 293 } 294 } 295 } 296 } 297 return 0; 298 } 299 300 static __inline__ int 301 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 302 { 303 int i = 0; 304 int len; /* current scsi fifo size */ 305 306 REG1(base); 307 while (reqlen && !(i & 0x40)) { 308 i = inb(base + PIO_STATUS); 309 /* VDEB(printk("pio_status=%x\n", i)); */ 310 if (i & 0x80) /* error */ 311 return 0; 312 313 switch (i & 0x1e) { 314 case 0x10: 315 len = 128; 316 break; 317 case 0x0: 318 len = 84; 319 break; 320 case 0x8: 321 len = 42; 322 break; 323 case 0xc: 324 len = 1; 325 break; 326 default: 327 case 0xe: 328 len = 0; 329 break; 330 } 331 332 if (len) { 333 if (len > reqlen) 334 len = reqlen; 335 336 if (fast_pio && len > 3) { 337 outsl(base + PIO_FIFO, request, len >> 2); 338 request += len & 0xfc; 339 reqlen -= len & 0xfc; 340 } else { 341 while (len--) { 342 outb(*request++, base + PIO_FIFO); 343 reqlen--; 344 } 345 } 346 } 347 } 348 return 0; 349 } 350 351 static irqreturn_t 352 SYM53C500_intr(int irq, void *dev_id) 353 { 354 unsigned long flags; 355 struct Scsi_Host *dev = dev_id; 356 DEB(unsigned char fifo_size;) 357 DEB(unsigned char seq_reg;) 358 unsigned char status, int_reg; 359 unsigned char pio_status; 360 int port_base = dev->io_port; 361 struct sym53c500_data *data = 362 (struct sym53c500_data *)dev->hostdata; 363 struct scsi_cmnd *curSC = data->current_SC; 364 int fast_pio = data->fast_pio; 365 366 spin_lock_irqsave(dev->host_lock, flags); 367 368 VDEB(printk("SYM53C500_intr called\n")); 369 370 REG1(port_base); 371 pio_status = inb(port_base + PIO_STATUS); 372 REG0(port_base); 373 status = inb(port_base + STAT_REG); 374 DEB(seq_reg = inb(port_base + SEQ_REG)); 375 int_reg = inb(port_base + INT_REG); 376 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); 377 378 #if SYM53C500_DEBUG 379 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 380 status, seq_reg, int_reg, fifo_size); 381 printk(", pio=%02x\n", pio_status); 382 #endif /* SYM53C500_DEBUG */ 383 384 if (int_reg & 0x80) { /* SCSI reset intr */ 385 DEB(printk("SYM53C500: reset intr received\n")); 386 curSC->result = DID_RESET << 16; 387 goto idle_out; 388 } 389 390 if (pio_status & 0x80) { 391 printk("SYM53C500: Warning: PIO error!\n"); 392 curSC->result = DID_ERROR << 16; 393 goto idle_out; 394 } 395 396 if (status & 0x20) { /* Parity error */ 397 printk("SYM53C500: Warning: parity error!\n"); 398 curSC->result = DID_PARITY << 16; 399 goto idle_out; 400 } 401 402 if (status & 0x40) { /* Gross error */ 403 printk("SYM53C500: Warning: gross error!\n"); 404 curSC->result = DID_ERROR << 16; 405 goto idle_out; 406 } 407 408 if (int_reg & 0x20) { /* Disconnect */ 409 DEB(printk("SYM53C500: disconnect intr received\n")); 410 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ 411 curSC->result = DID_NO_CONNECT << 16; 412 } else { /* Command complete, return status and message */ 413 curSC->result = (curSC->SCp.Status & 0xff) 414 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); 415 } 416 goto idle_out; 417 } 418 419 switch (status & 0x07) { /* scsi phase */ 420 case 0x00: /* DATA-OUT */ 421 if (int_reg & 0x10) { /* Target requesting info transfer */ 422 struct scatterlist *sg; 423 int i; 424 425 curSC->SCp.phase = data_out; 426 VDEB(printk("SYM53C500: Data-Out phase\n")); 427 outb(FLUSH_FIFO, port_base + CMD_REG); 428 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ 429 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 430 431 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { 432 SYM53C500_pio_write(fast_pio, port_base, 433 sg_virt(sg), sg->length); 434 } 435 REG0(port_base); 436 } 437 break; 438 439 case 0x01: /* DATA-IN */ 440 if (int_reg & 0x10) { /* Target requesting info transfer */ 441 struct scatterlist *sg; 442 int i; 443 444 curSC->SCp.phase = data_in; 445 VDEB(printk("SYM53C500: Data-In phase\n")); 446 outb(FLUSH_FIFO, port_base + CMD_REG); 447 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ 448 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 449 450 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { 451 SYM53C500_pio_read(fast_pio, port_base, 452 sg_virt(sg), sg->length); 453 } 454 REG0(port_base); 455 } 456 break; 457 458 case 0x02: /* COMMAND */ 459 curSC->SCp.phase = command_ph; 460 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); 461 break; 462 463 case 0x03: /* STATUS */ 464 curSC->SCp.phase = status_ph; 465 VDEB(printk("SYM53C500: Status phase\n")); 466 outb(FLUSH_FIFO, port_base + CMD_REG); 467 outb(INIT_CMD_COMPLETE, port_base + CMD_REG); 468 break; 469 470 case 0x04: /* Reserved */ 471 case 0x05: /* Reserved */ 472 printk("SYM53C500: WARNING: Reserved phase!!!\n"); 473 break; 474 475 case 0x06: /* MESSAGE-OUT */ 476 DEB(printk("SYM53C500: Message-Out phase\n")); 477 curSC->SCp.phase = message_out; 478 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ 479 outb(MSG_ACCEPT, port_base + CMD_REG); 480 break; 481 482 case 0x07: /* MESSAGE-IN */ 483 VDEB(printk("SYM53C500: Message-In phase\n")); 484 curSC->SCp.phase = message_in; 485 486 curSC->SCp.Status = inb(port_base + SCSI_FIFO); 487 curSC->SCp.Message = inb(port_base + SCSI_FIFO); 488 489 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); 490 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); 491 492 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { 493 outb(SET_ATN, port_base + CMD_REG); /* Reject message */ 494 DEB(printk("Discarding SAVE_POINTERS message\n")); 495 } 496 outb(MSG_ACCEPT, port_base + CMD_REG); 497 break; 498 } 499 out: 500 spin_unlock_irqrestore(dev->host_lock, flags); 501 return IRQ_HANDLED; 502 503 idle_out: 504 curSC->SCp.phase = idle; 505 curSC->scsi_done(curSC); 506 goto out; 507 } 508 509 static void 510 SYM53C500_release(struct pcmcia_device *link) 511 { 512 struct scsi_info_t *info = link->priv; 513 struct Scsi_Host *shost = info->host; 514 515 dev_dbg(&link->dev, "SYM53C500_release\n"); 516 517 /* 518 * Do this before releasing/freeing resources. 519 */ 520 scsi_remove_host(shost); 521 522 /* 523 * Interrupts getting hosed on card removal. Try 524 * the following code, mostly from qlogicfas.c. 525 */ 526 if (shost->irq) 527 free_irq(shost->irq, shost); 528 if (shost->io_port && shost->n_io_port) 529 release_region(shost->io_port, shost->n_io_port); 530 531 pcmcia_disable_device(link); 532 533 scsi_host_put(shost); 534 } /* SYM53C500_release */ 535 536 static const char* 537 SYM53C500_info(struct Scsi_Host *SChost) 538 { 539 static char info_msg[256]; 540 struct sym53c500_data *data = 541 (struct sym53c500_data *)SChost->hostdata; 542 543 DEB(printk("SYM53C500_info called\n")); 544 (void)snprintf(info_msg, sizeof(info_msg), 545 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 546 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); 547 return (info_msg); 548 } 549 550 static int 551 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) 552 { 553 int i; 554 int port_base = SCpnt->device->host->io_port; 555 struct sym53c500_data *data = 556 (struct sym53c500_data *)SCpnt->device->host->hostdata; 557 558 VDEB(printk("SYM53C500_queue called\n")); 559 560 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 561 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 562 SCpnt->device->lun, scsi_bufflen(SCpnt))); 563 564 VDEB(for (i = 0; i < SCpnt->cmd_len; i++) 565 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); 566 VDEB(printk("\n")); 567 568 data->current_SC = SCpnt; 569 data->current_SC->scsi_done = done; 570 data->current_SC->SCp.phase = command_ph; 571 data->current_SC->SCp.Status = 0; 572 data->current_SC->SCp.Message = 0; 573 574 /* We are locked here already by the mid layer */ 575 REG0(port_base); 576 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */ 577 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ 578 579 for (i = 0; i < SCpnt->cmd_len; i++) { 580 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); 581 } 582 outb(SELECT_NO_ATN, port_base + CMD_REG); 583 584 return 0; 585 } 586 587 static int 588 SYM53C500_host_reset(struct scsi_cmnd *SCpnt) 589 { 590 int port_base = SCpnt->device->host->io_port; 591 592 DEB(printk("SYM53C500_host_reset called\n")); 593 spin_lock_irq(SCpnt->device->host->host_lock); 594 SYM53C500_int_host_reset(port_base); 595 spin_unlock_irq(SCpnt->device->host->host_lock); 596 597 return SUCCESS; 598 } 599 600 static int 601 SYM53C500_biosparm(struct scsi_device *disk, 602 struct block_device *dev, 603 sector_t capacity, int *info_array) 604 { 605 int size; 606 607 DEB(printk("SYM53C500_biosparm called\n")); 608 609 size = capacity; 610 info_array[0] = 64; /* heads */ 611 info_array[1] = 32; /* sectors */ 612 info_array[2] = size >> 11; /* cylinders */ 613 if (info_array[2] > 1024) { /* big disk */ 614 info_array[0] = 255; 615 info_array[1] = 63; 616 info_array[2] = size / (255 * 63); 617 } 618 return 0; 619 } 620 621 static ssize_t 622 SYM53C500_show_pio(struct device *dev, struct device_attribute *attr, 623 char *buf) 624 { 625 struct Scsi_Host *SHp = class_to_shost(dev); 626 struct sym53c500_data *data = 627 (struct sym53c500_data *)SHp->hostdata; 628 629 return snprintf(buf, 4, "%d\n", data->fast_pio); 630 } 631 632 static ssize_t 633 SYM53C500_store_pio(struct device *dev, struct device_attribute *attr, 634 const char *buf, size_t count) 635 { 636 int pio; 637 struct Scsi_Host *SHp = class_to_shost(dev); 638 struct sym53c500_data *data = 639 (struct sym53c500_data *)SHp->hostdata; 640 641 pio = simple_strtoul(buf, NULL, 0); 642 if (pio == 0 || pio == 1) { 643 data->fast_pio = pio; 644 return count; 645 } 646 else 647 return -EINVAL; 648 } 649 650 /* 651 * SCSI HBA device attributes we want to 652 * make available via sysfs. 653 */ 654 static struct device_attribute SYM53C500_pio_attr = { 655 .attr = { 656 .name = "fast_pio", 657 .mode = (S_IRUGO | S_IWUSR), 658 }, 659 .show = SYM53C500_show_pio, 660 .store = SYM53C500_store_pio, 661 }; 662 663 static struct device_attribute *SYM53C500_shost_attrs[] = { 664 &SYM53C500_pio_attr, 665 NULL, 666 }; 667 668 /* 669 * scsi_host_template initializer 670 */ 671 static struct scsi_host_template sym53c500_driver_template = { 672 .module = THIS_MODULE, 673 .name = "SYM53C500", 674 .info = SYM53C500_info, 675 .queuecommand = SYM53C500_queue, 676 .eh_host_reset_handler = SYM53C500_host_reset, 677 .bios_param = SYM53C500_biosparm, 678 .proc_name = "SYM53C500", 679 .can_queue = 1, 680 .this_id = 7, 681 .sg_tablesize = 32, 682 .cmd_per_lun = 1, 683 .use_clustering = ENABLE_CLUSTERING, 684 .shost_attrs = SYM53C500_shost_attrs 685 }; 686 687 static int SYM53C500_config_check(struct pcmcia_device *p_dev, 688 cistpl_cftable_entry_t *cfg, 689 cistpl_cftable_entry_t *dflt, 690 unsigned int vcc, 691 void *priv_data) 692 { 693 p_dev->io_lines = 10; 694 p_dev->resource[0]->start = cfg->io.win[0].base; 695 p_dev->resource[0]->end = cfg->io.win[0].len; 696 697 if (p_dev->resource[0]->start == 0) 698 return -ENODEV; 699 700 return pcmcia_request_io(p_dev); 701 } 702 703 static int 704 SYM53C500_config(struct pcmcia_device *link) 705 { 706 struct scsi_info_t *info = link->priv; 707 int ret; 708 int irq_level, port_base; 709 struct Scsi_Host *host; 710 struct scsi_host_template *tpnt = &sym53c500_driver_template; 711 struct sym53c500_data *data; 712 713 dev_dbg(&link->dev, "SYM53C500_config\n"); 714 715 info->manf_id = link->manf_id; 716 717 ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL); 718 if (ret) 719 goto failed; 720 721 if (!link->irq) 722 goto failed; 723 724 ret = pcmcia_request_configuration(link, &link->conf); 725 if (ret) 726 goto failed; 727 728 /* 729 * That's the trouble with copying liberally from another driver. 730 * Some things probably aren't relevant, and I suspect this entire 731 * section dealing with manufacturer IDs can be scrapped. --rct 732 */ 733 if ((info->manf_id == MANFID_MACNICA) || 734 (info->manf_id == MANFID_PIONEER) || 735 (info->manf_id == 0x0098)) { 736 /* set ATAcmd */ 737 outb(0xb4, link->resource[0]->start + 0xd); 738 outb(0x24, link->resource[0]->start + 0x9); 739 outb(0x04, link->resource[0]->start + 0xd); 740 } 741 742 /* 743 * irq_level == 0 implies tpnt->can_queue == 0, which 744 * is not supported in 2.6. Thus, only irq_level > 0 745 * will be allowed. 746 * 747 * Possible port_base values are as follows: 748 * 749 * 0x130, 0x230, 0x280, 0x290, 750 * 0x320, 0x330, 0x340, 0x350 751 */ 752 port_base = link->resource[0]->start; 753 irq_level = link->irq; 754 755 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", 756 port_base, irq_level, USE_FAST_PIO);) 757 758 chip_init(port_base); 759 760 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); 761 if (!host) { 762 printk("SYM53C500: Unable to register host, giving up.\n"); 763 goto err_release; 764 } 765 766 data = (struct sym53c500_data *)host->hostdata; 767 768 if (irq_level > 0) { 769 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) { 770 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); 771 goto err_free_scsi; 772 } 773 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); 774 } else if (irq_level == 0) { 775 DEB(printk("SYM53C500: No interrupts detected\n")); 776 goto err_free_scsi; 777 } else { 778 DEB(printk("SYM53C500: Shouldn't get here!\n")); 779 goto err_free_scsi; 780 } 781 782 host->unique_id = port_base; 783 host->irq = irq_level; 784 host->io_port = port_base; 785 host->n_io_port = 0x10; 786 host->dma_channel = -1; 787 788 /* 789 * Note fast_pio is set to USE_FAST_PIO by 790 * default, but can be changed via "sysfs". 791 */ 792 data->fast_pio = USE_FAST_PIO; 793 794 info->host = host; 795 796 if (scsi_add_host(host, NULL)) 797 goto err_free_irq; 798 799 scsi_scan_host(host); 800 801 return 0; 802 803 err_free_irq: 804 free_irq(irq_level, host); 805 err_free_scsi: 806 scsi_host_put(host); 807 err_release: 808 release_region(port_base, 0x10); 809 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); 810 return -ENODEV; 811 812 failed: 813 SYM53C500_release(link); 814 return -ENODEV; 815 } /* SYM53C500_config */ 816 817 static int sym53c500_resume(struct pcmcia_device *link) 818 { 819 struct scsi_info_t *info = link->priv; 820 821 /* See earlier comment about manufacturer IDs. */ 822 if ((info->manf_id == MANFID_MACNICA) || 823 (info->manf_id == MANFID_PIONEER) || 824 (info->manf_id == 0x0098)) { 825 outb(0x80, link->resource[0]->start + 0xd); 826 outb(0x24, link->resource[0]->start + 0x9); 827 outb(0x04, link->resource[0]->start + 0xd); 828 } 829 /* 830 * If things don't work after a "resume", 831 * this is a good place to start looking. 832 */ 833 SYM53C500_int_host_reset(link->resource[0]->start); 834 835 return 0; 836 } 837 838 static void 839 SYM53C500_detach(struct pcmcia_device *link) 840 { 841 dev_dbg(&link->dev, "SYM53C500_detach\n"); 842 843 SYM53C500_release(link); 844 845 kfree(link->priv); 846 link->priv = NULL; 847 } /* SYM53C500_detach */ 848 849 static int 850 SYM53C500_probe(struct pcmcia_device *link) 851 { 852 struct scsi_info_t *info; 853 854 dev_dbg(&link->dev, "SYM53C500_attach()\n"); 855 856 /* Create new SCSI device */ 857 info = kzalloc(sizeof(*info), GFP_KERNEL); 858 if (!info) 859 return -ENOMEM; 860 info->p_dev = link; 861 link->priv = info; 862 link->resource[0]->end = 16; 863 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; 864 link->conf.Attributes = CONF_ENABLE_IRQ; 865 link->conf.IntType = INT_MEMORY_AND_IO; 866 867 return SYM53C500_config(link); 868 } /* SYM53C500_attach */ 869 870 MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); 871 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); 872 MODULE_LICENSE("GPL"); 873 874 static struct pcmcia_device_id sym53c500_ids[] = { 875 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7), 876 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8), 877 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44), 878 PCMCIA_DEVICE_NULL, 879 }; 880 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); 881 882 static struct pcmcia_driver sym53c500_cs_driver = { 883 .owner = THIS_MODULE, 884 .drv = { 885 .name = "sym53c500_cs", 886 }, 887 .probe = SYM53C500_probe, 888 .remove = SYM53C500_detach, 889 .id_table = sym53c500_ids, 890 .resume = sym53c500_resume, 891 }; 892 893 static int __init 894 init_sym53c500_cs(void) 895 { 896 return pcmcia_register_driver(&sym53c500_cs_driver); 897 } 898 899 static void __exit 900 exit_sym53c500_cs(void) 901 { 902 pcmcia_unregister_driver(&sym53c500_cs_driver); 903 } 904 905 module_init(init_sym53c500_cs); 906 module_exit(exit_sym53c500_cs); 907