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 83 #define SYNC_MODE 0 /* Synchronous transfer mode */ 84 85 /* Default configuration */ 86 #define C1_IMG 0x07 /* ID=7 */ 87 #define C2_IMG 0x48 /* FE SCSI2 */ 88 #define C3_IMG 0x20 /* CDB */ 89 #define C4_IMG 0x04 /* ANE */ 90 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */ 91 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */ 92 93 /* Hardware Registers: offsets from io_port (base) */ 94 95 /* Control Register Set 0 */ 96 #define TC_LSB 0x00 /* transfer counter lsb */ 97 #define TC_MSB 0x01 /* transfer counter msb */ 98 #define SCSI_FIFO 0x02 /* scsi fifo register */ 99 #define CMD_REG 0x03 /* command register */ 100 #define STAT_REG 0x04 /* status register */ 101 #define DEST_ID 0x04 /* selection/reselection bus id */ 102 #define INT_REG 0x05 /* interrupt status register */ 103 #define SRTIMOUT 0x05 /* select/reselect timeout reg */ 104 #define SEQ_REG 0x06 /* sequence step register */ 105 #define SYNCPRD 0x06 /* synchronous transfer period */ 106 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ 107 #define SYNCOFF 0x07 /* synchronous offset register */ 108 #define CONFIG1 0x08 /* configuration register */ 109 #define CLKCONV 0x09 /* clock conversion register */ 110 /* #define TESTREG 0x0A */ /* test mode register */ 111 #define CONFIG2 0x0B /* configuration 2 register */ 112 #define CONFIG3 0x0C /* configuration 3 register */ 113 #define CONFIG4 0x0D /* configuration 4 register */ 114 #define TC_HIGH 0x0E /* transfer counter high */ 115 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ 116 117 /* Control Register Set 1 */ 118 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ 119 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ 120 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ 121 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ 122 /* #define PIO_FIFO1 0x05 */ /* */ 123 /* #define PIO_FIFO2 0x06 */ /* */ 124 /* #define PIO_FIFO3 0x07 */ /* */ 125 #define PIO_STATUS 0x08 /* PIO status (r/w) */ 126 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ 127 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ 128 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ 129 #define CONFIG5 0x09 /* configuration 5 register */ 130 /* #define SIGNATURE 0x0E */ /* signature register (r) */ 131 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ 132 #define CONFIG7 0x0d 133 134 /* select register set 0 */ 135 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) 136 /* select register set 1 */ 137 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) 138 139 #if SYM53C500_DEBUG 140 #define DEB(x) x 141 #else 142 #define DEB(x) 143 #endif 144 145 #if VERBOSE_SYM53C500_DEBUG 146 #define VDEB(x) x 147 #else 148 #define VDEB(x) 149 #endif 150 151 #define LOAD_DMA_COUNT(x, count) \ 152 outb(count & 0xff, (x) + TC_LSB); \ 153 outb((count >> 8) & 0xff, (x) + TC_MSB); \ 154 outb((count >> 16) & 0xff, (x) + TC_HIGH); 155 156 /* Chip commands */ 157 #define DMA_OP 0x80 158 159 #define SCSI_NOP 0x00 160 #define FLUSH_FIFO 0x01 161 #define CHIP_RESET 0x02 162 #define SCSI_RESET 0x03 163 #define RESELECT 0x40 164 #define SELECT_NO_ATN 0x41 165 #define SELECT_ATN 0x42 166 #define SELECT_ATN_STOP 0x43 167 #define ENABLE_SEL 0x44 168 #define DISABLE_SEL 0x45 169 #define SELECT_ATN3 0x46 170 #define RESELECT3 0x47 171 #define TRANSFER_INFO 0x10 172 #define INIT_CMD_COMPLETE 0x11 173 #define MSG_ACCEPT 0x12 174 #define TRANSFER_PAD 0x18 175 #define SET_ATN 0x1a 176 #define RESET_ATN 0x1b 177 #define SEND_MSG 0x20 178 #define SEND_STATUS 0x21 179 #define SEND_DATA 0x22 180 #define DISCONN_SEQ 0x23 181 #define TERMINATE_SEQ 0x24 182 #define TARG_CMD_COMPLETE 0x25 183 #define DISCONN 0x27 184 #define RECV_MSG 0x28 185 #define RECV_CMD 0x29 186 #define RECV_DATA 0x2a 187 #define RECV_CMD_SEQ 0x2b 188 #define TARGET_ABORT_DMA 0x04 189 190 /* ================================================================== */ 191 192 struct scsi_info_t { 193 struct pcmcia_device *p_dev; 194 dev_node_t node; 195 struct Scsi_Host *host; 196 unsigned short manf_id; 197 }; 198 199 /* 200 * Repository for per-instance host data. 201 */ 202 struct sym53c500_data { 203 struct scsi_cmnd *current_SC; 204 int fast_pio; 205 }; 206 207 enum Phase { 208 idle, 209 data_out, 210 data_in, 211 command_ph, 212 status_ph, 213 message_out, 214 message_in 215 }; 216 217 /* ================================================================== */ 218 219 static void 220 chip_init(int io_port) 221 { 222 REG1(io_port); 223 outb(0x01, io_port + PIO_STATUS); 224 outb(0x00, io_port + PIO_FLAG); 225 226 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 227 outb(C3_IMG, io_port + CONFIG3); 228 outb(C2_IMG, io_port + CONFIG2); 229 outb(C1_IMG, io_port + CONFIG1); 230 231 outb(0x05, io_port + CLKCONV); /* clock conversion factor */ 232 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */ 233 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */ 234 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ 235 } 236 237 static void 238 SYM53C500_int_host_reset(int io_port) 239 { 240 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 241 outb(CHIP_RESET, io_port + CMD_REG); 242 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */ 243 outb(SCSI_RESET, io_port + CMD_REG); 244 chip_init(io_port); 245 } 246 247 static __inline__ int 248 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 249 { 250 int i; 251 int len; /* current scsi fifo size */ 252 253 REG1(base); 254 while (reqlen) { 255 i = inb(base + PIO_STATUS); 256 /* VDEB(printk("pio_status=%x\n", i)); */ 257 if (i & 0x80) 258 return 0; 259 260 switch (i & 0x1e) { 261 default: 262 case 0x10: /* fifo empty */ 263 len = 0; 264 break; 265 case 0x0: 266 len = 1; 267 break; 268 case 0x8: /* fifo 1/3 full */ 269 len = 42; 270 break; 271 case 0xc: /* fifo 2/3 full */ 272 len = 84; 273 break; 274 case 0xe: /* fifo full */ 275 len = 128; 276 break; 277 } 278 279 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ 280 return 0; 281 } 282 283 if (len) { 284 if (len > reqlen) 285 len = reqlen; 286 287 if (fast_pio && len > 3) { 288 insl(base + PIO_FIFO, request, len >> 2); 289 request += len & 0xfc; 290 reqlen -= len & 0xfc; 291 } else { 292 while (len--) { 293 *request++ = inb(base + PIO_FIFO); 294 reqlen--; 295 } 296 } 297 } 298 } 299 return 0; 300 } 301 302 static __inline__ int 303 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 304 { 305 int i = 0; 306 int len; /* current scsi fifo size */ 307 308 REG1(base); 309 while (reqlen && !(i & 0x40)) { 310 i = inb(base + PIO_STATUS); 311 /* VDEB(printk("pio_status=%x\n", i)); */ 312 if (i & 0x80) /* error */ 313 return 0; 314 315 switch (i & 0x1e) { 316 case 0x10: 317 len = 128; 318 break; 319 case 0x0: 320 len = 84; 321 break; 322 case 0x8: 323 len = 42; 324 break; 325 case 0xc: 326 len = 1; 327 break; 328 default: 329 case 0xe: 330 len = 0; 331 break; 332 } 333 334 if (len) { 335 if (len > reqlen) 336 len = reqlen; 337 338 if (fast_pio && len > 3) { 339 outsl(base + PIO_FIFO, request, len >> 2); 340 request += len & 0xfc; 341 reqlen -= len & 0xfc; 342 } else { 343 while (len--) { 344 outb(*request++, base + PIO_FIFO); 345 reqlen--; 346 } 347 } 348 } 349 } 350 return 0; 351 } 352 353 static irqreturn_t 354 SYM53C500_intr(int irq, void *dev_id) 355 { 356 unsigned long flags; 357 struct Scsi_Host *dev = dev_id; 358 DEB(unsigned char fifo_size;) 359 DEB(unsigned char seq_reg;) 360 unsigned char status, int_reg; 361 unsigned char pio_status; 362 int port_base = dev->io_port; 363 struct sym53c500_data *data = 364 (struct sym53c500_data *)dev->hostdata; 365 struct scsi_cmnd *curSC = data->current_SC; 366 int fast_pio = data->fast_pio; 367 368 spin_lock_irqsave(dev->host_lock, flags); 369 370 VDEB(printk("SYM53C500_intr called\n")); 371 372 REG1(port_base); 373 pio_status = inb(port_base + PIO_STATUS); 374 REG0(port_base); 375 status = inb(port_base + STAT_REG); 376 DEB(seq_reg = inb(port_base + SEQ_REG)); 377 int_reg = inb(port_base + INT_REG); 378 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); 379 380 #if SYM53C500_DEBUG 381 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 382 status, seq_reg, int_reg, fifo_size); 383 printk(", pio=%02x\n", pio_status); 384 #endif /* SYM53C500_DEBUG */ 385 386 if (int_reg & 0x80) { /* SCSI reset intr */ 387 DEB(printk("SYM53C500: reset intr received\n")); 388 curSC->result = DID_RESET << 16; 389 goto idle_out; 390 } 391 392 if (pio_status & 0x80) { 393 printk("SYM53C500: Warning: PIO error!\n"); 394 curSC->result = DID_ERROR << 16; 395 goto idle_out; 396 } 397 398 if (status & 0x20) { /* Parity error */ 399 printk("SYM53C500: Warning: parity error!\n"); 400 curSC->result = DID_PARITY << 16; 401 goto idle_out; 402 } 403 404 if (status & 0x40) { /* Gross error */ 405 printk("SYM53C500: Warning: gross error!\n"); 406 curSC->result = DID_ERROR << 16; 407 goto idle_out; 408 } 409 410 if (int_reg & 0x20) { /* Disconnect */ 411 DEB(printk("SYM53C500: disconnect intr received\n")); 412 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ 413 curSC->result = DID_NO_CONNECT << 16; 414 } else { /* Command complete, return status and message */ 415 curSC->result = (curSC->SCp.Status & 0xff) 416 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); 417 } 418 goto idle_out; 419 } 420 421 switch (status & 0x07) { /* scsi phase */ 422 case 0x00: /* DATA-OUT */ 423 if (int_reg & 0x10) { /* Target requesting info transfer */ 424 struct scatterlist *sg; 425 int i; 426 427 curSC->SCp.phase = data_out; 428 VDEB(printk("SYM53C500: Data-Out phase\n")); 429 outb(FLUSH_FIFO, port_base + CMD_REG); 430 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ 431 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 432 433 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { 434 SYM53C500_pio_write(fast_pio, port_base, 435 sg_virt(sg), sg->length); 436 } 437 REG0(port_base); 438 } 439 break; 440 441 case 0x01: /* DATA-IN */ 442 if (int_reg & 0x10) { /* Target requesting info transfer */ 443 struct scatterlist *sg; 444 int i; 445 446 curSC->SCp.phase = data_in; 447 VDEB(printk("SYM53C500: Data-In phase\n")); 448 outb(FLUSH_FIFO, port_base + CMD_REG); 449 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ 450 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 451 452 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { 453 SYM53C500_pio_read(fast_pio, port_base, 454 sg_virt(sg), sg->length); 455 } 456 REG0(port_base); 457 } 458 break; 459 460 case 0x02: /* COMMAND */ 461 curSC->SCp.phase = command_ph; 462 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); 463 break; 464 465 case 0x03: /* STATUS */ 466 curSC->SCp.phase = status_ph; 467 VDEB(printk("SYM53C500: Status phase\n")); 468 outb(FLUSH_FIFO, port_base + CMD_REG); 469 outb(INIT_CMD_COMPLETE, port_base + CMD_REG); 470 break; 471 472 case 0x04: /* Reserved */ 473 case 0x05: /* Reserved */ 474 printk("SYM53C500: WARNING: Reserved phase!!!\n"); 475 break; 476 477 case 0x06: /* MESSAGE-OUT */ 478 DEB(printk("SYM53C500: Message-Out phase\n")); 479 curSC->SCp.phase = message_out; 480 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ 481 outb(MSG_ACCEPT, port_base + CMD_REG); 482 break; 483 484 case 0x07: /* MESSAGE-IN */ 485 VDEB(printk("SYM53C500: Message-In phase\n")); 486 curSC->SCp.phase = message_in; 487 488 curSC->SCp.Status = inb(port_base + SCSI_FIFO); 489 curSC->SCp.Message = inb(port_base + SCSI_FIFO); 490 491 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); 492 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); 493 494 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { 495 outb(SET_ATN, port_base + CMD_REG); /* Reject message */ 496 DEB(printk("Discarding SAVE_POINTERS message\n")); 497 } 498 outb(MSG_ACCEPT, port_base + CMD_REG); 499 break; 500 } 501 out: 502 spin_unlock_irqrestore(dev->host_lock, flags); 503 return IRQ_HANDLED; 504 505 idle_out: 506 curSC->SCp.phase = idle; 507 curSC->scsi_done(curSC); 508 goto out; 509 } 510 511 static void 512 SYM53C500_release(struct pcmcia_device *link) 513 { 514 struct scsi_info_t *info = link->priv; 515 struct Scsi_Host *shost = info->host; 516 517 dev_dbg(&link->dev, "SYM53C500_release\n"); 518 519 /* 520 * Do this before releasing/freeing resources. 521 */ 522 scsi_remove_host(shost); 523 524 /* 525 * Interrupts getting hosed on card removal. Try 526 * the following code, mostly from qlogicfas.c. 527 */ 528 if (shost->irq) 529 free_irq(shost->irq, shost); 530 if (shost->io_port && shost->n_io_port) 531 release_region(shost->io_port, shost->n_io_port); 532 533 pcmcia_disable_device(link); 534 535 scsi_host_put(shost); 536 } /* SYM53C500_release */ 537 538 static const char* 539 SYM53C500_info(struct Scsi_Host *SChost) 540 { 541 static char info_msg[256]; 542 struct sym53c500_data *data = 543 (struct sym53c500_data *)SChost->hostdata; 544 545 DEB(printk("SYM53C500_info called\n")); 546 (void)snprintf(info_msg, sizeof(info_msg), 547 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 548 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); 549 return (info_msg); 550 } 551 552 static int 553 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) 554 { 555 int i; 556 int port_base = SCpnt->device->host->io_port; 557 struct sym53c500_data *data = 558 (struct sym53c500_data *)SCpnt->device->host->hostdata; 559 560 VDEB(printk("SYM53C500_queue called\n")); 561 562 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 563 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 564 SCpnt->device->lun, scsi_bufflen(SCpnt))); 565 566 VDEB(for (i = 0; i < SCpnt->cmd_len; i++) 567 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); 568 VDEB(printk("\n")); 569 570 data->current_SC = SCpnt; 571 data->current_SC->scsi_done = done; 572 data->current_SC->SCp.phase = command_ph; 573 data->current_SC->SCp.Status = 0; 574 data->current_SC->SCp.Message = 0; 575 576 /* We are locked here already by the mid layer */ 577 REG0(port_base); 578 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */ 579 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ 580 581 for (i = 0; i < SCpnt->cmd_len; i++) { 582 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); 583 } 584 outb(SELECT_NO_ATN, port_base + CMD_REG); 585 586 return 0; 587 } 588 589 static int 590 SYM53C500_host_reset(struct scsi_cmnd *SCpnt) 591 { 592 int port_base = SCpnt->device->host->io_port; 593 594 DEB(printk("SYM53C500_host_reset called\n")); 595 spin_lock_irq(SCpnt->device->host->host_lock); 596 SYM53C500_int_host_reset(port_base); 597 spin_unlock_irq(SCpnt->device->host->host_lock); 598 599 return SUCCESS; 600 } 601 602 static int 603 SYM53C500_biosparm(struct scsi_device *disk, 604 struct block_device *dev, 605 sector_t capacity, int *info_array) 606 { 607 int size; 608 609 DEB(printk("SYM53C500_biosparm called\n")); 610 611 size = capacity; 612 info_array[0] = 64; /* heads */ 613 info_array[1] = 32; /* sectors */ 614 info_array[2] = size >> 11; /* cylinders */ 615 if (info_array[2] > 1024) { /* big disk */ 616 info_array[0] = 255; 617 info_array[1] = 63; 618 info_array[2] = size / (255 * 63); 619 } 620 return 0; 621 } 622 623 static ssize_t 624 SYM53C500_show_pio(struct device *dev, struct device_attribute *attr, 625 char *buf) 626 { 627 struct Scsi_Host *SHp = class_to_shost(dev); 628 struct sym53c500_data *data = 629 (struct sym53c500_data *)SHp->hostdata; 630 631 return snprintf(buf, 4, "%d\n", data->fast_pio); 632 } 633 634 static ssize_t 635 SYM53C500_store_pio(struct device *dev, struct device_attribute *attr, 636 const char *buf, size_t count) 637 { 638 int pio; 639 struct Scsi_Host *SHp = class_to_shost(dev); 640 struct sym53c500_data *data = 641 (struct sym53c500_data *)SHp->hostdata; 642 643 pio = simple_strtoul(buf, NULL, 0); 644 if (pio == 0 || pio == 1) { 645 data->fast_pio = pio; 646 return count; 647 } 648 else 649 return -EINVAL; 650 } 651 652 /* 653 * SCSI HBA device attributes we want to 654 * make available via sysfs. 655 */ 656 static struct device_attribute SYM53C500_pio_attr = { 657 .attr = { 658 .name = "fast_pio", 659 .mode = (S_IRUGO | S_IWUSR), 660 }, 661 .show = SYM53C500_show_pio, 662 .store = SYM53C500_store_pio, 663 }; 664 665 static struct device_attribute *SYM53C500_shost_attrs[] = { 666 &SYM53C500_pio_attr, 667 NULL, 668 }; 669 670 /* 671 * scsi_host_template initializer 672 */ 673 static struct scsi_host_template sym53c500_driver_template = { 674 .module = THIS_MODULE, 675 .name = "SYM53C500", 676 .info = SYM53C500_info, 677 .queuecommand = SYM53C500_queue, 678 .eh_host_reset_handler = SYM53C500_host_reset, 679 .bios_param = SYM53C500_biosparm, 680 .proc_name = "SYM53C500", 681 .can_queue = 1, 682 .this_id = 7, 683 .sg_tablesize = 32, 684 .cmd_per_lun = 1, 685 .use_clustering = ENABLE_CLUSTERING, 686 .shost_attrs = SYM53C500_shost_attrs 687 }; 688 689 static int SYM53C500_config_check(struct pcmcia_device *p_dev, 690 cistpl_cftable_entry_t *cfg, 691 cistpl_cftable_entry_t *dflt, 692 unsigned int vcc, 693 void *priv_data) 694 { 695 p_dev->io.BasePort1 = cfg->io.win[0].base; 696 p_dev->io.NumPorts1 = cfg->io.win[0].len; 697 698 if (p_dev->io.BasePort1 == 0) 699 return -ENODEV; 700 701 return pcmcia_request_io(p_dev, &p_dev->io); 702 } 703 704 static int 705 SYM53C500_config(struct pcmcia_device *link) 706 { 707 struct scsi_info_t *info = link->priv; 708 int ret; 709 int irq_level, port_base; 710 struct Scsi_Host *host; 711 struct scsi_host_template *tpnt = &sym53c500_driver_template; 712 struct sym53c500_data *data; 713 714 dev_dbg(&link->dev, "SYM53C500_config\n"); 715 716 info->manf_id = link->manf_id; 717 718 ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL); 719 if (ret) 720 goto failed; 721 722 ret = pcmcia_request_irq(link, &link->irq); 723 if (ret) 724 goto failed; 725 726 ret = pcmcia_request_configuration(link, &link->conf); 727 if (ret) 728 goto failed; 729 730 /* 731 * That's the trouble with copying liberally from another driver. 732 * Some things probably aren't relevant, and I suspect this entire 733 * section dealing with manufacturer IDs can be scrapped. --rct 734 */ 735 if ((info->manf_id == MANFID_MACNICA) || 736 (info->manf_id == MANFID_PIONEER) || 737 (info->manf_id == 0x0098)) { 738 /* set ATAcmd */ 739 outb(0xb4, link->io.BasePort1 + 0xd); 740 outb(0x24, link->io.BasePort1 + 0x9); 741 outb(0x04, link->io.BasePort1 + 0xd); 742 } 743 744 /* 745 * irq_level == 0 implies tpnt->can_queue == 0, which 746 * is not supported in 2.6. Thus, only irq_level > 0 747 * will be allowed. 748 * 749 * Possible port_base values are as follows: 750 * 751 * 0x130, 0x230, 0x280, 0x290, 752 * 0x320, 0x330, 0x340, 0x350 753 */ 754 port_base = link->io.BasePort1; 755 irq_level = link->irq.AssignedIRQ; 756 757 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", 758 port_base, irq_level, USE_FAST_PIO);) 759 760 chip_init(port_base); 761 762 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); 763 if (!host) { 764 printk("SYM53C500: Unable to register host, giving up.\n"); 765 goto err_release; 766 } 767 768 data = (struct sym53c500_data *)host->hostdata; 769 770 if (irq_level > 0) { 771 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) { 772 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); 773 goto err_free_scsi; 774 } 775 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); 776 } else if (irq_level == 0) { 777 DEB(printk("SYM53C500: No interrupts detected\n")); 778 goto err_free_scsi; 779 } else { 780 DEB(printk("SYM53C500: Shouldn't get here!\n")); 781 goto err_free_scsi; 782 } 783 784 host->unique_id = port_base; 785 host->irq = irq_level; 786 host->io_port = port_base; 787 host->n_io_port = 0x10; 788 host->dma_channel = -1; 789 790 /* 791 * Note fast_pio is set to USE_FAST_PIO by 792 * default, but can be changed via "sysfs". 793 */ 794 data->fast_pio = USE_FAST_PIO; 795 796 sprintf(info->node.dev_name, "scsi%d", host->host_no); 797 link->dev_node = &info->node; 798 info->host = host; 799 800 if (scsi_add_host(host, NULL)) 801 goto err_free_irq; 802 803 scsi_scan_host(host); 804 805 return 0; 806 807 err_free_irq: 808 free_irq(irq_level, host); 809 err_free_scsi: 810 scsi_host_put(host); 811 err_release: 812 release_region(port_base, 0x10); 813 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); 814 return -ENODEV; 815 816 failed: 817 SYM53C500_release(link); 818 return -ENODEV; 819 } /* SYM53C500_config */ 820 821 static int sym53c500_resume(struct pcmcia_device *link) 822 { 823 struct scsi_info_t *info = link->priv; 824 825 /* See earlier comment about manufacturer IDs. */ 826 if ((info->manf_id == MANFID_MACNICA) || 827 (info->manf_id == MANFID_PIONEER) || 828 (info->manf_id == 0x0098)) { 829 outb(0x80, link->io.BasePort1 + 0xd); 830 outb(0x24, link->io.BasePort1 + 0x9); 831 outb(0x04, link->io.BasePort1 + 0xd); 832 } 833 /* 834 * If things don't work after a "resume", 835 * this is a good place to start looking. 836 */ 837 SYM53C500_int_host_reset(link->io.BasePort1); 838 839 return 0; 840 } 841 842 static void 843 SYM53C500_detach(struct pcmcia_device *link) 844 { 845 dev_dbg(&link->dev, "SYM53C500_detach\n"); 846 847 SYM53C500_release(link); 848 849 kfree(link->priv); 850 link->priv = NULL; 851 } /* SYM53C500_detach */ 852 853 static int 854 SYM53C500_probe(struct pcmcia_device *link) 855 { 856 struct scsi_info_t *info; 857 858 dev_dbg(&link->dev, "SYM53C500_attach()\n"); 859 860 /* Create new SCSI device */ 861 info = kzalloc(sizeof(*info), GFP_KERNEL); 862 if (!info) 863 return -ENOMEM; 864 info->p_dev = link; 865 link->priv = info; 866 link->io.NumPorts1 = 16; 867 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; 868 link->io.IOAddrLines = 10; 869 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 870 link->conf.Attributes = CONF_ENABLE_IRQ; 871 link->conf.IntType = INT_MEMORY_AND_IO; 872 873 return SYM53C500_config(link); 874 } /* SYM53C500_attach */ 875 876 MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); 877 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); 878 MODULE_LICENSE("GPL"); 879 880 static struct pcmcia_device_id sym53c500_ids[] = { 881 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7), 882 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8), 883 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44), 884 PCMCIA_DEVICE_NULL, 885 }; 886 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); 887 888 static struct pcmcia_driver sym53c500_cs_driver = { 889 .owner = THIS_MODULE, 890 .drv = { 891 .name = "sym53c500_cs", 892 }, 893 .probe = SYM53C500_probe, 894 .remove = SYM53C500_detach, 895 .id_table = sym53c500_ids, 896 .resume = sym53c500_resume, 897 }; 898 899 static int __init 900 init_sym53c500_cs(void) 901 { 902 return pcmcia_register_driver(&sym53c500_cs_driver); 903 } 904 905 static void __exit 906 exit_sym53c500_cs(void) 907 { 908 pcmcia_unregister_driver(&sym53c500_cs_driver); 909 } 910 911 module_init(init_sym53c500_cs); 912 module_exit(exit_sym53c500_cs); 913