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/cistpl.h> 75 #include <pcmcia/ds.h> 76 #include <pcmcia/ciscode.h> 77 78 79 /* ================================================================== */ 80 81 #define SYNC_MODE 0 /* Synchronous transfer mode */ 82 83 /* Default configuration */ 84 #define C1_IMG 0x07 /* ID=7 */ 85 #define C2_IMG 0x48 /* FE SCSI2 */ 86 #define C3_IMG 0x20 /* CDB */ 87 #define C4_IMG 0x04 /* ANE */ 88 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */ 89 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */ 90 91 /* Hardware Registers: offsets from io_port (base) */ 92 93 /* Control Register Set 0 */ 94 #define TC_LSB 0x00 /* transfer counter lsb */ 95 #define TC_MSB 0x01 /* transfer counter msb */ 96 #define SCSI_FIFO 0x02 /* scsi fifo register */ 97 #define CMD_REG 0x03 /* command register */ 98 #define STAT_REG 0x04 /* status register */ 99 #define DEST_ID 0x04 /* selection/reselection bus id */ 100 #define INT_REG 0x05 /* interrupt status register */ 101 #define SRTIMOUT 0x05 /* select/reselect timeout reg */ 102 #define SEQ_REG 0x06 /* sequence step register */ 103 #define SYNCPRD 0x06 /* synchronous transfer period */ 104 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ 105 #define SYNCOFF 0x07 /* synchronous offset register */ 106 #define CONFIG1 0x08 /* configuration register */ 107 #define CLKCONV 0x09 /* clock conversion register */ 108 /* #define TESTREG 0x0A */ /* test mode register */ 109 #define CONFIG2 0x0B /* configuration 2 register */ 110 #define CONFIG3 0x0C /* configuration 3 register */ 111 #define CONFIG4 0x0D /* configuration 4 register */ 112 #define TC_HIGH 0x0E /* transfer counter high */ 113 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ 114 115 /* Control Register Set 1 */ 116 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ 117 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ 118 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ 119 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ 120 /* #define PIO_FIFO1 0x05 */ /* */ 121 /* #define PIO_FIFO2 0x06 */ /* */ 122 /* #define PIO_FIFO3 0x07 */ /* */ 123 #define PIO_STATUS 0x08 /* PIO status (r/w) */ 124 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ 125 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ 126 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ 127 #define CONFIG5 0x09 /* configuration 5 register */ 128 /* #define SIGNATURE 0x0E */ /* signature register (r) */ 129 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ 130 #define CONFIG7 0x0d 131 132 /* select register set 0 */ 133 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) 134 /* select register set 1 */ 135 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) 136 137 #if SYM53C500_DEBUG 138 #define DEB(x) x 139 #else 140 #define DEB(x) 141 #endif 142 143 #if VERBOSE_SYM53C500_DEBUG 144 #define VDEB(x) x 145 #else 146 #define VDEB(x) 147 #endif 148 149 #define LOAD_DMA_COUNT(x, count) \ 150 outb(count & 0xff, (x) + TC_LSB); \ 151 outb((count >> 8) & 0xff, (x) + TC_MSB); \ 152 outb((count >> 16) & 0xff, (x) + TC_HIGH); 153 154 /* Chip commands */ 155 #define DMA_OP 0x80 156 157 #define SCSI_NOP 0x00 158 #define FLUSH_FIFO 0x01 159 #define CHIP_RESET 0x02 160 #define SCSI_RESET 0x03 161 #define RESELECT 0x40 162 #define SELECT_NO_ATN 0x41 163 #define SELECT_ATN 0x42 164 #define SELECT_ATN_STOP 0x43 165 #define ENABLE_SEL 0x44 166 #define DISABLE_SEL 0x45 167 #define SELECT_ATN3 0x46 168 #define RESELECT3 0x47 169 #define TRANSFER_INFO 0x10 170 #define INIT_CMD_COMPLETE 0x11 171 #define MSG_ACCEPT 0x12 172 #define TRANSFER_PAD 0x18 173 #define SET_ATN 0x1a 174 #define RESET_ATN 0x1b 175 #define SEND_MSG 0x20 176 #define SEND_STATUS 0x21 177 #define SEND_DATA 0x22 178 #define DISCONN_SEQ 0x23 179 #define TERMINATE_SEQ 0x24 180 #define TARG_CMD_COMPLETE 0x25 181 #define DISCONN 0x27 182 #define RECV_MSG 0x28 183 #define RECV_CMD 0x29 184 #define RECV_DATA 0x2a 185 #define RECV_CMD_SEQ 0x2b 186 #define TARGET_ABORT_DMA 0x04 187 188 /* ================================================================== */ 189 190 struct scsi_info_t { 191 struct pcmcia_device *p_dev; 192 struct Scsi_Host *host; 193 unsigned short manf_id; 194 }; 195 196 /* 197 * Repository for per-instance host data. 198 */ 199 struct sym53c500_data { 200 struct scsi_cmnd *current_SC; 201 int fast_pio; 202 }; 203 204 enum Phase { 205 idle, 206 data_out, 207 data_in, 208 command_ph, 209 status_ph, 210 message_out, 211 message_in 212 }; 213 214 /* ================================================================== */ 215 216 static void 217 chip_init(int io_port) 218 { 219 REG1(io_port); 220 outb(0x01, io_port + PIO_STATUS); 221 outb(0x00, io_port + PIO_FLAG); 222 223 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 224 outb(C3_IMG, io_port + CONFIG3); 225 outb(C2_IMG, io_port + CONFIG2); 226 outb(C1_IMG, io_port + CONFIG1); 227 228 outb(0x05, io_port + CLKCONV); /* clock conversion factor */ 229 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */ 230 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */ 231 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ 232 } 233 234 static void 235 SYM53C500_int_host_reset(int io_port) 236 { 237 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 238 outb(CHIP_RESET, io_port + CMD_REG); 239 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */ 240 outb(SCSI_RESET, io_port + CMD_REG); 241 chip_init(io_port); 242 } 243 244 static __inline__ int 245 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 246 { 247 int i; 248 int len; /* current scsi fifo size */ 249 250 REG1(base); 251 while (reqlen) { 252 i = inb(base + PIO_STATUS); 253 /* VDEB(printk("pio_status=%x\n", i)); */ 254 if (i & 0x80) 255 return 0; 256 257 switch (i & 0x1e) { 258 default: 259 case 0x10: /* fifo empty */ 260 len = 0; 261 break; 262 case 0x0: 263 len = 1; 264 break; 265 case 0x8: /* fifo 1/3 full */ 266 len = 42; 267 break; 268 case 0xc: /* fifo 2/3 full */ 269 len = 84; 270 break; 271 case 0xe: /* fifo full */ 272 len = 128; 273 break; 274 } 275 276 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ 277 return 0; 278 } 279 280 if (len) { 281 if (len > reqlen) 282 len = reqlen; 283 284 if (fast_pio && len > 3) { 285 insl(base + PIO_FIFO, request, len >> 2); 286 request += len & 0xfc; 287 reqlen -= len & 0xfc; 288 } else { 289 while (len--) { 290 *request++ = inb(base + PIO_FIFO); 291 reqlen--; 292 } 293 } 294 } 295 } 296 return 0; 297 } 298 299 static __inline__ int 300 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 301 { 302 int i = 0; 303 int len; /* current scsi fifo size */ 304 305 REG1(base); 306 while (reqlen && !(i & 0x40)) { 307 i = inb(base + PIO_STATUS); 308 /* VDEB(printk("pio_status=%x\n", i)); */ 309 if (i & 0x80) /* error */ 310 return 0; 311 312 switch (i & 0x1e) { 313 case 0x10: 314 len = 128; 315 break; 316 case 0x0: 317 len = 84; 318 break; 319 case 0x8: 320 len = 42; 321 break; 322 case 0xc: 323 len = 1; 324 break; 325 default: 326 case 0xe: 327 len = 0; 328 break; 329 } 330 331 if (len) { 332 if (len > reqlen) 333 len = reqlen; 334 335 if (fast_pio && len > 3) { 336 outsl(base + PIO_FIFO, request, len >> 2); 337 request += len & 0xfc; 338 reqlen -= len & 0xfc; 339 } else { 340 while (len--) { 341 outb(*request++, base + PIO_FIFO); 342 reqlen--; 343 } 344 } 345 } 346 } 347 return 0; 348 } 349 350 static irqreturn_t 351 SYM53C500_intr(int irq, void *dev_id) 352 { 353 unsigned long flags; 354 struct Scsi_Host *dev = dev_id; 355 DEB(unsigned char fifo_size;) 356 DEB(unsigned char seq_reg;) 357 unsigned char status, int_reg; 358 unsigned char pio_status; 359 int port_base = dev->io_port; 360 struct sym53c500_data *data = 361 (struct sym53c500_data *)dev->hostdata; 362 struct scsi_cmnd *curSC = data->current_SC; 363 int fast_pio = data->fast_pio; 364 365 spin_lock_irqsave(dev->host_lock, flags); 366 367 VDEB(printk("SYM53C500_intr called\n")); 368 369 REG1(port_base); 370 pio_status = inb(port_base + PIO_STATUS); 371 REG0(port_base); 372 status = inb(port_base + STAT_REG); 373 DEB(seq_reg = inb(port_base + SEQ_REG)); 374 int_reg = inb(port_base + INT_REG); 375 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); 376 377 #if SYM53C500_DEBUG 378 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 379 status, seq_reg, int_reg, fifo_size); 380 printk(", pio=%02x\n", pio_status); 381 #endif /* SYM53C500_DEBUG */ 382 383 if (int_reg & 0x80) { /* SCSI reset intr */ 384 DEB(printk("SYM53C500: reset intr received\n")); 385 curSC->result = DID_RESET << 16; 386 goto idle_out; 387 } 388 389 if (pio_status & 0x80) { 390 printk("SYM53C500: Warning: PIO error!\n"); 391 curSC->result = DID_ERROR << 16; 392 goto idle_out; 393 } 394 395 if (status & 0x20) { /* Parity error */ 396 printk("SYM53C500: Warning: parity error!\n"); 397 curSC->result = DID_PARITY << 16; 398 goto idle_out; 399 } 400 401 if (status & 0x40) { /* Gross error */ 402 printk("SYM53C500: Warning: gross error!\n"); 403 curSC->result = DID_ERROR << 16; 404 goto idle_out; 405 } 406 407 if (int_reg & 0x20) { /* Disconnect */ 408 DEB(printk("SYM53C500: disconnect intr received\n")); 409 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ 410 curSC->result = DID_NO_CONNECT << 16; 411 } else { /* Command complete, return status and message */ 412 curSC->result = (curSC->SCp.Status & 0xff) 413 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); 414 } 415 goto idle_out; 416 } 417 418 switch (status & 0x07) { /* scsi phase */ 419 case 0x00: /* DATA-OUT */ 420 if (int_reg & 0x10) { /* Target requesting info transfer */ 421 struct scatterlist *sg; 422 int i; 423 424 curSC->SCp.phase = data_out; 425 VDEB(printk("SYM53C500: Data-Out phase\n")); 426 outb(FLUSH_FIFO, port_base + CMD_REG); 427 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ 428 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 429 430 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { 431 SYM53C500_pio_write(fast_pio, port_base, 432 sg_virt(sg), sg->length); 433 } 434 REG0(port_base); 435 } 436 break; 437 438 case 0x01: /* DATA-IN */ 439 if (int_reg & 0x10) { /* Target requesting info transfer */ 440 struct scatterlist *sg; 441 int i; 442 443 curSC->SCp.phase = data_in; 444 VDEB(printk("SYM53C500: Data-In phase\n")); 445 outb(FLUSH_FIFO, port_base + CMD_REG); 446 LOAD_DMA_COUNT(port_base, scsi_bufflen(curSC)); /* Max transfer size */ 447 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 448 449 scsi_for_each_sg(curSC, sg, scsi_sg_count(curSC), i) { 450 SYM53C500_pio_read(fast_pio, port_base, 451 sg_virt(sg), sg->length); 452 } 453 REG0(port_base); 454 } 455 break; 456 457 case 0x02: /* COMMAND */ 458 curSC->SCp.phase = command_ph; 459 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); 460 break; 461 462 case 0x03: /* STATUS */ 463 curSC->SCp.phase = status_ph; 464 VDEB(printk("SYM53C500: Status phase\n")); 465 outb(FLUSH_FIFO, port_base + CMD_REG); 466 outb(INIT_CMD_COMPLETE, port_base + CMD_REG); 467 break; 468 469 case 0x04: /* Reserved */ 470 case 0x05: /* Reserved */ 471 printk("SYM53C500: WARNING: Reserved phase!!!\n"); 472 break; 473 474 case 0x06: /* MESSAGE-OUT */ 475 DEB(printk("SYM53C500: Message-Out phase\n")); 476 curSC->SCp.phase = message_out; 477 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ 478 outb(MSG_ACCEPT, port_base + CMD_REG); 479 break; 480 481 case 0x07: /* MESSAGE-IN */ 482 VDEB(printk("SYM53C500: Message-In phase\n")); 483 curSC->SCp.phase = message_in; 484 485 curSC->SCp.Status = inb(port_base + SCSI_FIFO); 486 curSC->SCp.Message = inb(port_base + SCSI_FIFO); 487 488 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); 489 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); 490 491 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { 492 outb(SET_ATN, port_base + CMD_REG); /* Reject message */ 493 DEB(printk("Discarding SAVE_POINTERS message\n")); 494 } 495 outb(MSG_ACCEPT, port_base + CMD_REG); 496 break; 497 } 498 out: 499 spin_unlock_irqrestore(dev->host_lock, flags); 500 return IRQ_HANDLED; 501 502 idle_out: 503 curSC->SCp.phase = idle; 504 curSC->scsi_done(curSC); 505 goto out; 506 } 507 508 static void 509 SYM53C500_release(struct pcmcia_device *link) 510 { 511 struct scsi_info_t *info = link->priv; 512 struct Scsi_Host *shost = info->host; 513 514 dev_dbg(&link->dev, "SYM53C500_release\n"); 515 516 /* 517 * Do this before releasing/freeing resources. 518 */ 519 scsi_remove_host(shost); 520 521 /* 522 * Interrupts getting hosed on card removal. Try 523 * the following code, mostly from qlogicfas.c. 524 */ 525 if (shost->irq) 526 free_irq(shost->irq, shost); 527 if (shost->io_port && shost->n_io_port) 528 release_region(shost->io_port, shost->n_io_port); 529 530 pcmcia_disable_device(link); 531 532 scsi_host_put(shost); 533 } /* SYM53C500_release */ 534 535 static const char* 536 SYM53C500_info(struct Scsi_Host *SChost) 537 { 538 static char info_msg[256]; 539 struct sym53c500_data *data = 540 (struct sym53c500_data *)SChost->hostdata; 541 542 DEB(printk("SYM53C500_info called\n")); 543 (void)snprintf(info_msg, sizeof(info_msg), 544 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 545 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); 546 return (info_msg); 547 } 548 549 static int 550 SYM53C500_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) 551 { 552 int i; 553 int port_base = SCpnt->device->host->io_port; 554 struct sym53c500_data *data = 555 (struct sym53c500_data *)SCpnt->device->host->hostdata; 556 557 VDEB(printk("SYM53C500_queue called\n")); 558 559 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 560 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 561 (u8)SCpnt->device->lun, scsi_bufflen(SCpnt))); 562 563 VDEB(for (i = 0; i < SCpnt->cmd_len; i++) 564 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); 565 VDEB(printk("\n")); 566 567 data->current_SC = SCpnt; 568 data->current_SC->scsi_done = done; 569 data->current_SC->SCp.phase = command_ph; 570 data->current_SC->SCp.Status = 0; 571 data->current_SC->SCp.Message = 0; 572 573 /* We are locked here already by the mid layer */ 574 REG0(port_base); 575 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */ 576 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ 577 578 for (i = 0; i < SCpnt->cmd_len; i++) { 579 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); 580 } 581 outb(SELECT_NO_ATN, port_base + CMD_REG); 582 583 return 0; 584 } 585 586 static DEF_SCSI_QCMD(SYM53C500_queue) 587 588 static int 589 SYM53C500_host_reset(struct scsi_cmnd *SCpnt) 590 { 591 int port_base = SCpnt->device->host->io_port; 592 593 DEB(printk("SYM53C500_host_reset called\n")); 594 spin_lock_irq(SCpnt->device->host->host_lock); 595 SYM53C500_int_host_reset(port_base); 596 spin_unlock_irq(SCpnt->device->host->host_lock); 597 598 return SUCCESS; 599 } 600 601 static int 602 SYM53C500_biosparm(struct scsi_device *disk, 603 struct block_device *dev, 604 sector_t capacity, int *info_array) 605 { 606 int size; 607 608 DEB(printk("SYM53C500_biosparm called\n")); 609 610 size = capacity; 611 info_array[0] = 64; /* heads */ 612 info_array[1] = 32; /* sectors */ 613 info_array[2] = size >> 11; /* cylinders */ 614 if (info_array[2] > 1024) { /* big disk */ 615 info_array[0] = 255; 616 info_array[1] = 63; 617 info_array[2] = size / (255 * 63); 618 } 619 return 0; 620 } 621 622 static ssize_t 623 SYM53C500_show_pio(struct device *dev, struct device_attribute *attr, 624 char *buf) 625 { 626 struct Scsi_Host *SHp = class_to_shost(dev); 627 struct sym53c500_data *data = 628 (struct sym53c500_data *)SHp->hostdata; 629 630 return snprintf(buf, 4, "%d\n", data->fast_pio); 631 } 632 633 static ssize_t 634 SYM53C500_store_pio(struct device *dev, struct device_attribute *attr, 635 const char *buf, size_t count) 636 { 637 int pio; 638 struct Scsi_Host *SHp = class_to_shost(dev); 639 struct sym53c500_data *data = 640 (struct sym53c500_data *)SHp->hostdata; 641 642 pio = simple_strtoul(buf, NULL, 0); 643 if (pio == 0 || pio == 1) { 644 data->fast_pio = pio; 645 return count; 646 } 647 else 648 return -EINVAL; 649 } 650 651 /* 652 * SCSI HBA device attributes we want to 653 * make available via sysfs. 654 */ 655 static struct device_attribute SYM53C500_pio_attr = { 656 .attr = { 657 .name = "fast_pio", 658 .mode = (S_IRUGO | S_IWUSR), 659 }, 660 .show = SYM53C500_show_pio, 661 .store = SYM53C500_store_pio, 662 }; 663 664 static struct device_attribute *SYM53C500_shost_attrs[] = { 665 &SYM53C500_pio_attr, 666 NULL, 667 }; 668 669 /* 670 * scsi_host_template initializer 671 */ 672 static struct scsi_host_template sym53c500_driver_template = { 673 .module = THIS_MODULE, 674 .name = "SYM53C500", 675 .info = SYM53C500_info, 676 .queuecommand = SYM53C500_queue, 677 .eh_host_reset_handler = SYM53C500_host_reset, 678 .bios_param = SYM53C500_biosparm, 679 .proc_name = "SYM53C500", 680 .can_queue = 1, 681 .this_id = 7, 682 .sg_tablesize = 32, 683 .shost_attrs = SYM53C500_shost_attrs 684 }; 685 686 static int SYM53C500_config_check(struct pcmcia_device *p_dev, void *priv_data) 687 { 688 p_dev->io_lines = 10; 689 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; 690 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; 691 692 if (p_dev->resource[0]->start == 0) 693 return -ENODEV; 694 695 return pcmcia_request_io(p_dev); 696 } 697 698 static int 699 SYM53C500_config(struct pcmcia_device *link) 700 { 701 struct scsi_info_t *info = link->priv; 702 int ret; 703 int irq_level, port_base; 704 struct Scsi_Host *host; 705 struct scsi_host_template *tpnt = &sym53c500_driver_template; 706 struct sym53c500_data *data; 707 708 dev_dbg(&link->dev, "SYM53C500_config\n"); 709 710 info->manf_id = link->manf_id; 711 712 ret = pcmcia_loop_config(link, SYM53C500_config_check, NULL); 713 if (ret) 714 goto failed; 715 716 if (!link->irq) 717 goto failed; 718 719 ret = pcmcia_enable_device(link); 720 if (ret) 721 goto failed; 722 723 /* 724 * That's the trouble with copying liberally from another driver. 725 * Some things probably aren't relevant, and I suspect this entire 726 * section dealing with manufacturer IDs can be scrapped. --rct 727 */ 728 if ((info->manf_id == MANFID_MACNICA) || 729 (info->manf_id == MANFID_PIONEER) || 730 (info->manf_id == 0x0098)) { 731 /* set ATAcmd */ 732 outb(0xb4, link->resource[0]->start + 0xd); 733 outb(0x24, link->resource[0]->start + 0x9); 734 outb(0x04, link->resource[0]->start + 0xd); 735 } 736 737 /* 738 * irq_level == 0 implies tpnt->can_queue == 0, which 739 * is not supported in 2.6. Thus, only irq_level > 0 740 * will be allowed. 741 * 742 * Possible port_base values are as follows: 743 * 744 * 0x130, 0x230, 0x280, 0x290, 745 * 0x320, 0x330, 0x340, 0x350 746 */ 747 port_base = link->resource[0]->start; 748 irq_level = link->irq; 749 750 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", 751 port_base, irq_level, USE_FAST_PIO);) 752 753 chip_init(port_base); 754 755 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); 756 if (!host) { 757 printk("SYM53C500: Unable to register host, giving up.\n"); 758 goto err_release; 759 } 760 761 data = (struct sym53c500_data *)host->hostdata; 762 763 if (irq_level > 0) { 764 if (request_irq(irq_level, SYM53C500_intr, IRQF_SHARED, "SYM53C500", host)) { 765 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); 766 goto err_free_scsi; 767 } 768 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); 769 } else if (irq_level == 0) { 770 DEB(printk("SYM53C500: No interrupts detected\n")); 771 goto err_free_scsi; 772 } else { 773 DEB(printk("SYM53C500: Shouldn't get here!\n")); 774 goto err_free_scsi; 775 } 776 777 host->unique_id = port_base; 778 host->irq = irq_level; 779 host->io_port = port_base; 780 host->n_io_port = 0x10; 781 host->dma_channel = -1; 782 783 /* 784 * Note fast_pio is set to USE_FAST_PIO by 785 * default, but can be changed via "sysfs". 786 */ 787 data->fast_pio = USE_FAST_PIO; 788 789 info->host = host; 790 791 if (scsi_add_host(host, NULL)) 792 goto err_free_irq; 793 794 scsi_scan_host(host); 795 796 return 0; 797 798 err_free_irq: 799 free_irq(irq_level, host); 800 err_free_scsi: 801 scsi_host_put(host); 802 err_release: 803 release_region(port_base, 0x10); 804 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); 805 return -ENODEV; 806 807 failed: 808 SYM53C500_release(link); 809 return -ENODEV; 810 } /* SYM53C500_config */ 811 812 static int sym53c500_resume(struct pcmcia_device *link) 813 { 814 struct scsi_info_t *info = link->priv; 815 816 /* See earlier comment about manufacturer IDs. */ 817 if ((info->manf_id == MANFID_MACNICA) || 818 (info->manf_id == MANFID_PIONEER) || 819 (info->manf_id == 0x0098)) { 820 outb(0x80, link->resource[0]->start + 0xd); 821 outb(0x24, link->resource[0]->start + 0x9); 822 outb(0x04, link->resource[0]->start + 0xd); 823 } 824 /* 825 * If things don't work after a "resume", 826 * this is a good place to start looking. 827 */ 828 SYM53C500_int_host_reset(link->resource[0]->start); 829 830 return 0; 831 } 832 833 static void 834 SYM53C500_detach(struct pcmcia_device *link) 835 { 836 dev_dbg(&link->dev, "SYM53C500_detach\n"); 837 838 SYM53C500_release(link); 839 840 kfree(link->priv); 841 link->priv = NULL; 842 } /* SYM53C500_detach */ 843 844 static int 845 SYM53C500_probe(struct pcmcia_device *link) 846 { 847 struct scsi_info_t *info; 848 849 dev_dbg(&link->dev, "SYM53C500_attach()\n"); 850 851 /* Create new SCSI device */ 852 info = kzalloc(sizeof(*info), GFP_KERNEL); 853 if (!info) 854 return -ENOMEM; 855 info->p_dev = link; 856 link->priv = info; 857 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; 858 859 return SYM53C500_config(link); 860 } /* SYM53C500_attach */ 861 862 MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); 863 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); 864 MODULE_LICENSE("GPL"); 865 866 static const struct pcmcia_device_id sym53c500_ids[] = { 867 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7), 868 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8), 869 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44), 870 PCMCIA_DEVICE_NULL, 871 }; 872 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); 873 874 static struct pcmcia_driver sym53c500_cs_driver = { 875 .owner = THIS_MODULE, 876 .name = "sym53c500_cs", 877 .probe = SYM53C500_probe, 878 .remove = SYM53C500_detach, 879 .id_table = sym53c500_ids, 880 .resume = sym53c500_resume, 881 }; 882 module_pcmcia_driver(sym53c500_cs_driver); 883