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/sched.h> 58 #include <linux/slab.h> 59 #include <linux/string.h> 60 #include <linux/ioport.h> 61 #include <linux/blkdev.h> 62 #include <linux/spinlock.h> 63 #include <linux/bitops.h> 64 65 #include <asm/io.h> 66 #include <asm/dma.h> 67 #include <asm/irq.h> 68 69 #include <scsi/scsi_ioctl.h> 70 #include <scsi/scsi_cmnd.h> 71 #include <scsi/scsi_device.h> 72 #include <scsi/scsi.h> 73 #include <scsi/scsi_host.h> 74 75 #include <pcmcia/cs_types.h> 76 #include <pcmcia/cs.h> 77 #include <pcmcia/cistpl.h> 78 #include <pcmcia/ds.h> 79 #include <pcmcia/ciscode.h> 80 81 /* ================================================================== */ 82 83 #ifdef PCMCIA_DEBUG 84 static int pc_debug = PCMCIA_DEBUG; 85 module_param(pc_debug, int, 0); 86 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args) 87 static char *version = 88 "sym53c500_cs.c 0.9c 2004/10/27 (Bob Tracy)"; 89 #else 90 #define DEBUG(n, args...) 91 #endif 92 93 /* ================================================================== */ 94 95 #define SYNC_MODE 0 /* Synchronous transfer mode */ 96 97 /* Default configuration */ 98 #define C1_IMG 0x07 /* ID=7 */ 99 #define C2_IMG 0x48 /* FE SCSI2 */ 100 #define C3_IMG 0x20 /* CDB */ 101 #define C4_IMG 0x04 /* ANE */ 102 #define C5_IMG 0xa4 /* ? changed from b6= AA PI SIE POL */ 103 #define C7_IMG 0x80 /* added for SYM53C500 t. corner */ 104 105 /* Hardware Registers: offsets from io_port (base) */ 106 107 /* Control Register Set 0 */ 108 #define TC_LSB 0x00 /* transfer counter lsb */ 109 #define TC_MSB 0x01 /* transfer counter msb */ 110 #define SCSI_FIFO 0x02 /* scsi fifo register */ 111 #define CMD_REG 0x03 /* command register */ 112 #define STAT_REG 0x04 /* status register */ 113 #define DEST_ID 0x04 /* selection/reselection bus id */ 114 #define INT_REG 0x05 /* interrupt status register */ 115 #define SRTIMOUT 0x05 /* select/reselect timeout reg */ 116 #define SEQ_REG 0x06 /* sequence step register */ 117 #define SYNCPRD 0x06 /* synchronous transfer period */ 118 #define FIFO_FLAGS 0x07 /* indicates # of bytes in fifo */ 119 #define SYNCOFF 0x07 /* synchronous offset register */ 120 #define CONFIG1 0x08 /* configuration register */ 121 #define CLKCONV 0x09 /* clock conversion register */ 122 /* #define TESTREG 0x0A */ /* test mode register */ 123 #define CONFIG2 0x0B /* configuration 2 register */ 124 #define CONFIG3 0x0C /* configuration 3 register */ 125 #define CONFIG4 0x0D /* configuration 4 register */ 126 #define TC_HIGH 0x0E /* transfer counter high */ 127 /* #define FIFO_BOTTOM 0x0F */ /* reserve FIFO byte register */ 128 129 /* Control Register Set 1 */ 130 /* #define JUMPER_SENSE 0x00 */ /* jumper sense port reg (r/w) */ 131 /* #define SRAM_PTR 0x01 */ /* SRAM address pointer reg (r/w) */ 132 /* #define SRAM_DATA 0x02 */ /* SRAM data register (r/w) */ 133 #define PIO_FIFO 0x04 /* PIO FIFO registers (r/w) */ 134 /* #define PIO_FIFO1 0x05 */ /* */ 135 /* #define PIO_FIFO2 0x06 */ /* */ 136 /* #define PIO_FIFO3 0x07 */ /* */ 137 #define PIO_STATUS 0x08 /* PIO status (r/w) */ 138 /* #define ATA_CMD 0x09 */ /* ATA command/status reg (r/w) */ 139 /* #define ATA_ERR 0x0A */ /* ATA features/error reg (r/w) */ 140 #define PIO_FLAG 0x0B /* PIO flag interrupt enable (r/w) */ 141 #define CONFIG5 0x09 /* configuration 5 register */ 142 /* #define SIGNATURE 0x0E */ /* signature register (r) */ 143 /* #define CONFIG6 0x0F */ /* configuration 6 register (r) */ 144 #define CONFIG7 0x0d 145 146 /* select register set 0 */ 147 #define REG0(x) (outb(C4_IMG, (x) + CONFIG4)) 148 /* select register set 1 */ 149 #define REG1(x) outb(C7_IMG, (x) + CONFIG7); outb(C5_IMG, (x) + CONFIG5) 150 151 #if SYM53C500_DEBUG 152 #define DEB(x) x 153 #else 154 #define DEB(x) 155 #endif 156 157 #if VERBOSE_SYM53C500_DEBUG 158 #define VDEB(x) x 159 #else 160 #define VDEB(x) 161 #endif 162 163 #define LOAD_DMA_COUNT(x, count) \ 164 outb(count & 0xff, (x) + TC_LSB); \ 165 outb((count >> 8) & 0xff, (x) + TC_MSB); \ 166 outb((count >> 16) & 0xff, (x) + TC_HIGH); 167 168 /* Chip commands */ 169 #define DMA_OP 0x80 170 171 #define SCSI_NOP 0x00 172 #define FLUSH_FIFO 0x01 173 #define CHIP_RESET 0x02 174 #define SCSI_RESET 0x03 175 #define RESELECT 0x40 176 #define SELECT_NO_ATN 0x41 177 #define SELECT_ATN 0x42 178 #define SELECT_ATN_STOP 0x43 179 #define ENABLE_SEL 0x44 180 #define DISABLE_SEL 0x45 181 #define SELECT_ATN3 0x46 182 #define RESELECT3 0x47 183 #define TRANSFER_INFO 0x10 184 #define INIT_CMD_COMPLETE 0x11 185 #define MSG_ACCEPT 0x12 186 #define TRANSFER_PAD 0x18 187 #define SET_ATN 0x1a 188 #define RESET_ATN 0x1b 189 #define SEND_MSG 0x20 190 #define SEND_STATUS 0x21 191 #define SEND_DATA 0x22 192 #define DISCONN_SEQ 0x23 193 #define TERMINATE_SEQ 0x24 194 #define TARG_CMD_COMPLETE 0x25 195 #define DISCONN 0x27 196 #define RECV_MSG 0x28 197 #define RECV_CMD 0x29 198 #define RECV_DATA 0x2a 199 #define RECV_CMD_SEQ 0x2b 200 #define TARGET_ABORT_DMA 0x04 201 202 /* ================================================================== */ 203 204 struct scsi_info_t { 205 struct pcmcia_device *p_dev; 206 dev_node_t node; 207 struct Scsi_Host *host; 208 unsigned short manf_id; 209 }; 210 211 /* 212 * Repository for per-instance host data. 213 */ 214 struct sym53c500_data { 215 struct scsi_cmnd *current_SC; 216 int fast_pio; 217 }; 218 219 enum Phase { 220 idle, 221 data_out, 222 data_in, 223 command_ph, 224 status_ph, 225 message_out, 226 message_in 227 }; 228 229 /* ================================================================== */ 230 231 static void 232 chip_init(int io_port) 233 { 234 REG1(io_port); 235 outb(0x01, io_port + PIO_STATUS); 236 outb(0x00, io_port + PIO_FLAG); 237 238 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 239 outb(C3_IMG, io_port + CONFIG3); 240 outb(C2_IMG, io_port + CONFIG2); 241 outb(C1_IMG, io_port + CONFIG1); 242 243 outb(0x05, io_port + CLKCONV); /* clock conversion factor */ 244 outb(0x9C, io_port + SRTIMOUT); /* Selection timeout */ 245 outb(0x05, io_port + SYNCPRD); /* Synchronous transfer period */ 246 outb(SYNC_MODE, io_port + SYNCOFF); /* synchronous mode */ 247 } 248 249 static void 250 SYM53C500_int_host_reset(int io_port) 251 { 252 outb(C4_IMG, io_port + CONFIG4); /* REG0(io_port); */ 253 outb(CHIP_RESET, io_port + CMD_REG); 254 outb(SCSI_NOP, io_port + CMD_REG); /* required after reset */ 255 outb(SCSI_RESET, io_port + CMD_REG); 256 chip_init(io_port); 257 } 258 259 static __inline__ int 260 SYM53C500_pio_read(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 261 { 262 int i; 263 int len; /* current scsi fifo size */ 264 265 REG1(base); 266 while (reqlen) { 267 i = inb(base + PIO_STATUS); 268 /* VDEB(printk("pio_status=%x\n", i)); */ 269 if (i & 0x80) 270 return 0; 271 272 switch (i & 0x1e) { 273 default: 274 case 0x10: /* fifo empty */ 275 len = 0; 276 break; 277 case 0x0: 278 len = 1; 279 break; 280 case 0x8: /* fifo 1/3 full */ 281 len = 42; 282 break; 283 case 0xc: /* fifo 2/3 full */ 284 len = 84; 285 break; 286 case 0xe: /* fifo full */ 287 len = 128; 288 break; 289 } 290 291 if ((i & 0x40) && len == 0) { /* fifo empty and interrupt occurred */ 292 return 0; 293 } 294 295 if (len) { 296 if (len > reqlen) 297 len = reqlen; 298 299 if (fast_pio && len > 3) { 300 insl(base + PIO_FIFO, request, len >> 2); 301 request += len & 0xfc; 302 reqlen -= len & 0xfc; 303 } else { 304 while (len--) { 305 *request++ = inb(base + PIO_FIFO); 306 reqlen--; 307 } 308 } 309 } 310 } 311 return 0; 312 } 313 314 static __inline__ int 315 SYM53C500_pio_write(int fast_pio, int base, unsigned char *request, unsigned int reqlen) 316 { 317 int i = 0; 318 int len; /* current scsi fifo size */ 319 320 REG1(base); 321 while (reqlen && !(i & 0x40)) { 322 i = inb(base + PIO_STATUS); 323 /* VDEB(printk("pio_status=%x\n", i)); */ 324 if (i & 0x80) /* error */ 325 return 0; 326 327 switch (i & 0x1e) { 328 case 0x10: 329 len = 128; 330 break; 331 case 0x0: 332 len = 84; 333 break; 334 case 0x8: 335 len = 42; 336 break; 337 case 0xc: 338 len = 1; 339 break; 340 default: 341 case 0xe: 342 len = 0; 343 break; 344 } 345 346 if (len) { 347 if (len > reqlen) 348 len = reqlen; 349 350 if (fast_pio && len > 3) { 351 outsl(base + PIO_FIFO, request, len >> 2); 352 request += len & 0xfc; 353 reqlen -= len & 0xfc; 354 } else { 355 while (len--) { 356 outb(*request++, base + PIO_FIFO); 357 reqlen--; 358 } 359 } 360 } 361 } 362 return 0; 363 } 364 365 static irqreturn_t 366 SYM53C500_intr(int irq, void *dev_id, struct pt_regs *regs) 367 { 368 unsigned long flags; 369 struct Scsi_Host *dev = dev_id; 370 DEB(unsigned char fifo_size;) 371 DEB(unsigned char seq_reg;) 372 unsigned char status, int_reg; 373 unsigned char pio_status; 374 struct scatterlist *sglist; 375 unsigned int sgcount; 376 int port_base = dev->io_port; 377 struct sym53c500_data *data = 378 (struct sym53c500_data *)dev->hostdata; 379 struct scsi_cmnd *curSC = data->current_SC; 380 int fast_pio = data->fast_pio; 381 382 spin_lock_irqsave(dev->host_lock, flags); 383 384 VDEB(printk("SYM53C500_intr called\n")); 385 386 REG1(port_base); 387 pio_status = inb(port_base + PIO_STATUS); 388 REG0(port_base); 389 status = inb(port_base + STAT_REG); 390 DEB(seq_reg = inb(port_base + SEQ_REG)); 391 int_reg = inb(port_base + INT_REG); 392 DEB(fifo_size = inb(port_base + FIFO_FLAGS) & 0x1f); 393 394 #if SYM53C500_DEBUG 395 printk("status=%02x, seq_reg=%02x, int_reg=%02x, fifo_size=%02x", 396 status, seq_reg, int_reg, fifo_size); 397 printk(", pio=%02x\n", pio_status); 398 #endif /* SYM53C500_DEBUG */ 399 400 if (int_reg & 0x80) { /* SCSI reset intr */ 401 DEB(printk("SYM53C500: reset intr received\n")); 402 curSC->result = DID_RESET << 16; 403 goto idle_out; 404 } 405 406 if (pio_status & 0x80) { 407 printk("SYM53C500: Warning: PIO error!\n"); 408 curSC->result = DID_ERROR << 16; 409 goto idle_out; 410 } 411 412 if (status & 0x20) { /* Parity error */ 413 printk("SYM53C500: Warning: parity error!\n"); 414 curSC->result = DID_PARITY << 16; 415 goto idle_out; 416 } 417 418 if (status & 0x40) { /* Gross error */ 419 printk("SYM53C500: Warning: gross error!\n"); 420 curSC->result = DID_ERROR << 16; 421 goto idle_out; 422 } 423 424 if (int_reg & 0x20) { /* Disconnect */ 425 DEB(printk("SYM53C500: disconnect intr received\n")); 426 if (curSC->SCp.phase != message_in) { /* Unexpected disconnect */ 427 curSC->result = DID_NO_CONNECT << 16; 428 } else { /* Command complete, return status and message */ 429 curSC->result = (curSC->SCp.Status & 0xff) 430 | ((curSC->SCp.Message & 0xff) << 8) | (DID_OK << 16); 431 } 432 goto idle_out; 433 } 434 435 switch (status & 0x07) { /* scsi phase */ 436 case 0x00: /* DATA-OUT */ 437 if (int_reg & 0x10) { /* Target requesting info transfer */ 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, curSC->request_bufflen); /* Max transfer size */ 442 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 443 if (!curSC->use_sg) /* Don't use scatter-gather */ 444 SYM53C500_pio_write(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); 445 else { /* use scatter-gather */ 446 sgcount = curSC->use_sg; 447 sglist = curSC->request_buffer; 448 while (sgcount--) { 449 SYM53C500_pio_write(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); 450 sglist++; 451 } 452 } 453 REG0(port_base); 454 } 455 break; 456 457 case 0x01: /* DATA-IN */ 458 if (int_reg & 0x10) { /* Target requesting info transfer */ 459 curSC->SCp.phase = data_in; 460 VDEB(printk("SYM53C500: Data-In phase\n")); 461 outb(FLUSH_FIFO, port_base + CMD_REG); 462 LOAD_DMA_COUNT(port_base, curSC->request_bufflen); /* Max transfer size */ 463 outb(TRANSFER_INFO | DMA_OP, port_base + CMD_REG); 464 if (!curSC->use_sg) /* Don't use scatter-gather */ 465 SYM53C500_pio_read(fast_pio, port_base, curSC->request_buffer, curSC->request_bufflen); 466 else { /* Use scatter-gather */ 467 sgcount = curSC->use_sg; 468 sglist = curSC->request_buffer; 469 while (sgcount--) { 470 SYM53C500_pio_read(fast_pio, port_base, page_address(sglist->page) + sglist->offset, sglist->length); 471 sglist++; 472 } 473 } 474 REG0(port_base); 475 } 476 break; 477 478 case 0x02: /* COMMAND */ 479 curSC->SCp.phase = command_ph; 480 printk("SYM53C500: Warning: Unknown interrupt occurred in command phase!\n"); 481 break; 482 483 case 0x03: /* STATUS */ 484 curSC->SCp.phase = status_ph; 485 VDEB(printk("SYM53C500: Status phase\n")); 486 outb(FLUSH_FIFO, port_base + CMD_REG); 487 outb(INIT_CMD_COMPLETE, port_base + CMD_REG); 488 break; 489 490 case 0x04: /* Reserved */ 491 case 0x05: /* Reserved */ 492 printk("SYM53C500: WARNING: Reserved phase!!!\n"); 493 break; 494 495 case 0x06: /* MESSAGE-OUT */ 496 DEB(printk("SYM53C500: Message-Out phase\n")); 497 curSC->SCp.phase = message_out; 498 outb(SET_ATN, port_base + CMD_REG); /* Reject the message */ 499 outb(MSG_ACCEPT, port_base + CMD_REG); 500 break; 501 502 case 0x07: /* MESSAGE-IN */ 503 VDEB(printk("SYM53C500: Message-In phase\n")); 504 curSC->SCp.phase = message_in; 505 506 curSC->SCp.Status = inb(port_base + SCSI_FIFO); 507 curSC->SCp.Message = inb(port_base + SCSI_FIFO); 508 509 VDEB(printk("SCSI FIFO size=%d\n", inb(port_base + FIFO_FLAGS) & 0x1f)); 510 DEB(printk("Status = %02x Message = %02x\n", curSC->SCp.Status, curSC->SCp.Message)); 511 512 if (curSC->SCp.Message == SAVE_POINTERS || curSC->SCp.Message == DISCONNECT) { 513 outb(SET_ATN, port_base + CMD_REG); /* Reject message */ 514 DEB(printk("Discarding SAVE_POINTERS message\n")); 515 } 516 outb(MSG_ACCEPT, port_base + CMD_REG); 517 break; 518 } 519 out: 520 spin_unlock_irqrestore(dev->host_lock, flags); 521 return IRQ_HANDLED; 522 523 idle_out: 524 curSC->SCp.phase = idle; 525 curSC->scsi_done(curSC); 526 goto out; 527 } 528 529 static void 530 SYM53C500_release(struct pcmcia_device *link) 531 { 532 struct scsi_info_t *info = link->priv; 533 struct Scsi_Host *shost = info->host; 534 535 DEBUG(0, "SYM53C500_release(0x%p)\n", link); 536 537 /* 538 * Do this before releasing/freeing resources. 539 */ 540 scsi_remove_host(shost); 541 542 /* 543 * Interrupts getting hosed on card removal. Try 544 * the following code, mostly from qlogicfas.c. 545 */ 546 if (shost->irq) 547 free_irq(shost->irq, shost); 548 if (shost->dma_channel != 0xff) 549 free_dma(shost->dma_channel); 550 if (shost->io_port && shost->n_io_port) 551 release_region(shost->io_port, shost->n_io_port); 552 553 pcmcia_disable_device(link); 554 555 scsi_host_put(shost); 556 } /* SYM53C500_release */ 557 558 static const char* 559 SYM53C500_info(struct Scsi_Host *SChost) 560 { 561 static char info_msg[256]; 562 struct sym53c500_data *data = 563 (struct sym53c500_data *)SChost->hostdata; 564 565 DEB(printk("SYM53C500_info called\n")); 566 (void)snprintf(info_msg, sizeof(info_msg), 567 "SYM53C500 at 0x%lx, IRQ %d, %s PIO mode.", 568 SChost->io_port, SChost->irq, data->fast_pio ? "fast" : "slow"); 569 return (info_msg); 570 } 571 572 static int 573 SYM53C500_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) 574 { 575 int i; 576 int port_base = SCpnt->device->host->io_port; 577 struct sym53c500_data *data = 578 (struct sym53c500_data *)SCpnt->device->host->hostdata; 579 580 VDEB(printk("SYM53C500_queue called\n")); 581 582 DEB(printk("cmd=%02x, cmd_len=%02x, target=%02x, lun=%02x, bufflen=%d\n", 583 SCpnt->cmnd[0], SCpnt->cmd_len, SCpnt->device->id, 584 SCpnt->device->lun, SCpnt->request_bufflen)); 585 586 VDEB(for (i = 0; i < SCpnt->cmd_len; i++) 587 printk("cmd[%d]=%02x ", i, SCpnt->cmnd[i])); 588 VDEB(printk("\n")); 589 590 data->current_SC = SCpnt; 591 data->current_SC->scsi_done = done; 592 data->current_SC->SCp.phase = command_ph; 593 data->current_SC->SCp.Status = 0; 594 data->current_SC->SCp.Message = 0; 595 596 /* We are locked here already by the mid layer */ 597 REG0(port_base); 598 outb(scmd_id(SCpnt), port_base + DEST_ID); /* set destination */ 599 outb(FLUSH_FIFO, port_base + CMD_REG); /* reset the fifos */ 600 601 for (i = 0; i < SCpnt->cmd_len; i++) { 602 outb(SCpnt->cmnd[i], port_base + SCSI_FIFO); 603 } 604 outb(SELECT_NO_ATN, port_base + CMD_REG); 605 606 return 0; 607 } 608 609 static int 610 SYM53C500_host_reset(struct scsi_cmnd *SCpnt) 611 { 612 int port_base = SCpnt->device->host->io_port; 613 614 DEB(printk("SYM53C500_host_reset called\n")); 615 spin_lock_irq(SCpnt->device->host->host_lock); 616 SYM53C500_int_host_reset(port_base); 617 spin_unlock_irq(SCpnt->device->host->host_lock); 618 619 return SUCCESS; 620 } 621 622 static int 623 SYM53C500_biosparm(struct scsi_device *disk, 624 struct block_device *dev, 625 sector_t capacity, int *info_array) 626 { 627 int size; 628 629 DEB(printk("SYM53C500_biosparm called\n")); 630 631 size = capacity; 632 info_array[0] = 64; /* heads */ 633 info_array[1] = 32; /* sectors */ 634 info_array[2] = size >> 11; /* cylinders */ 635 if (info_array[2] > 1024) { /* big disk */ 636 info_array[0] = 255; 637 info_array[1] = 63; 638 info_array[2] = size / (255 * 63); 639 } 640 return 0; 641 } 642 643 static ssize_t 644 SYM53C500_show_pio(struct class_device *cdev, char *buf) 645 { 646 struct Scsi_Host *SHp = class_to_shost(cdev); 647 struct sym53c500_data *data = 648 (struct sym53c500_data *)SHp->hostdata; 649 650 return snprintf(buf, 4, "%d\n", data->fast_pio); 651 } 652 653 static ssize_t 654 SYM53C500_store_pio(struct class_device *cdev, const char *buf, size_t count) 655 { 656 int pio; 657 struct Scsi_Host *SHp = class_to_shost(cdev); 658 struct sym53c500_data *data = 659 (struct sym53c500_data *)SHp->hostdata; 660 661 pio = simple_strtoul(buf, NULL, 0); 662 if (pio == 0 || pio == 1) { 663 data->fast_pio = pio; 664 return count; 665 } 666 else 667 return -EINVAL; 668 } 669 670 /* 671 * SCSI HBA device attributes we want to 672 * make available via sysfs. 673 */ 674 static struct class_device_attribute SYM53C500_pio_attr = { 675 .attr = { 676 .name = "fast_pio", 677 .mode = (S_IRUGO | S_IWUSR), 678 }, 679 .show = SYM53C500_show_pio, 680 .store = SYM53C500_store_pio, 681 }; 682 683 static struct class_device_attribute *SYM53C500_shost_attrs[] = { 684 &SYM53C500_pio_attr, 685 NULL, 686 }; 687 688 /* 689 * scsi_host_template initializer 690 */ 691 static struct scsi_host_template sym53c500_driver_template = { 692 .module = THIS_MODULE, 693 .name = "SYM53C500", 694 .info = SYM53C500_info, 695 .queuecommand = SYM53C500_queue, 696 .eh_host_reset_handler = SYM53C500_host_reset, 697 .bios_param = SYM53C500_biosparm, 698 .proc_name = "SYM53C500", 699 .can_queue = 1, 700 .this_id = 7, 701 .sg_tablesize = 32, 702 .cmd_per_lun = 1, 703 .use_clustering = ENABLE_CLUSTERING, 704 .shost_attrs = SYM53C500_shost_attrs 705 }; 706 707 #define CS_CHECK(fn, ret) \ 708 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) 709 710 static int 711 SYM53C500_config(struct pcmcia_device *link) 712 { 713 struct scsi_info_t *info = link->priv; 714 tuple_t tuple; 715 cisparse_t parse; 716 int i, last_ret, last_fn; 717 int irq_level, port_base; 718 unsigned short tuple_data[32]; 719 struct Scsi_Host *host; 720 struct scsi_host_template *tpnt = &sym53c500_driver_template; 721 struct sym53c500_data *data; 722 723 DEBUG(0, "SYM53C500_config(0x%p)\n", link); 724 725 tuple.TupleData = (cisdata_t *)tuple_data; 726 tuple.TupleDataMax = 64; 727 tuple.TupleOffset = 0; 728 tuple.DesiredTuple = CISTPL_CONFIG; 729 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); 730 CS_CHECK(GetTupleData, pcmcia_get_tuple_data(link, &tuple)); 731 CS_CHECK(ParseTuple, pcmcia_parse_tuple(link, &tuple, &parse)); 732 link->conf.ConfigBase = parse.config.base; 733 734 tuple.DesiredTuple = CISTPL_MANFID; 735 if ((pcmcia_get_first_tuple(link, &tuple) == CS_SUCCESS) && 736 (pcmcia_get_tuple_data(link, &tuple) == CS_SUCCESS)) 737 info->manf_id = le16_to_cpu(tuple.TupleData[0]); 738 739 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY; 740 CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(link, &tuple)); 741 while (1) { 742 if (pcmcia_get_tuple_data(link, &tuple) != 0 || 743 pcmcia_parse_tuple(link, &tuple, &parse) != 0) 744 goto next_entry; 745 link->conf.ConfigIndex = parse.cftable_entry.index; 746 link->io.BasePort1 = parse.cftable_entry.io.win[0].base; 747 link->io.NumPorts1 = parse.cftable_entry.io.win[0].len; 748 749 if (link->io.BasePort1 != 0) { 750 i = pcmcia_request_io(link, &link->io); 751 if (i == CS_SUCCESS) 752 break; 753 } 754 next_entry: 755 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(link, &tuple)); 756 } 757 758 CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq)); 759 CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf)); 760 761 /* 762 * That's the trouble with copying liberally from another driver. 763 * Some things probably aren't relevant, and I suspect this entire 764 * section dealing with manufacturer IDs can be scrapped. --rct 765 */ 766 if ((info->manf_id == MANFID_MACNICA) || 767 (info->manf_id == MANFID_PIONEER) || 768 (info->manf_id == 0x0098)) { 769 /* set ATAcmd */ 770 outb(0xb4, link->io.BasePort1 + 0xd); 771 outb(0x24, link->io.BasePort1 + 0x9); 772 outb(0x04, link->io.BasePort1 + 0xd); 773 } 774 775 /* 776 * irq_level == 0 implies tpnt->can_queue == 0, which 777 * is not supported in 2.6. Thus, only irq_level > 0 778 * will be allowed. 779 * 780 * Possible port_base values are as follows: 781 * 782 * 0x130, 0x230, 0x280, 0x290, 783 * 0x320, 0x330, 0x340, 0x350 784 */ 785 port_base = link->io.BasePort1; 786 irq_level = link->irq.AssignedIRQ; 787 788 DEB(printk("SYM53C500: port_base=0x%x, irq=%d, fast_pio=%d\n", 789 port_base, irq_level, USE_FAST_PIO);) 790 791 chip_init(port_base); 792 793 host = scsi_host_alloc(tpnt, sizeof(struct sym53c500_data)); 794 if (!host) { 795 printk("SYM53C500: Unable to register host, giving up.\n"); 796 goto err_release; 797 } 798 799 data = (struct sym53c500_data *)host->hostdata; 800 801 if (irq_level > 0) { 802 if (request_irq(irq_level, SYM53C500_intr, SA_SHIRQ, "SYM53C500", host)) { 803 printk("SYM53C500: unable to allocate IRQ %d\n", irq_level); 804 goto err_free_scsi; 805 } 806 DEB(printk("SYM53C500: allocated IRQ %d\n", irq_level)); 807 } else if (irq_level == 0) { 808 DEB(printk("SYM53C500: No interrupts detected\n")); 809 goto err_free_scsi; 810 } else { 811 DEB(printk("SYM53C500: Shouldn't get here!\n")); 812 goto err_free_scsi; 813 } 814 815 host->unique_id = port_base; 816 host->irq = irq_level; 817 host->io_port = port_base; 818 host->n_io_port = 0x10; 819 host->dma_channel = -1; 820 821 /* 822 * Note fast_pio is set to USE_FAST_PIO by 823 * default, but can be changed via "sysfs". 824 */ 825 data->fast_pio = USE_FAST_PIO; 826 827 sprintf(info->node.dev_name, "scsi%d", host->host_no); 828 link->dev_node = &info->node; 829 info->host = host; 830 831 if (scsi_add_host(host, NULL)) 832 goto err_free_irq; 833 834 scsi_scan_host(host); 835 836 return 0; 837 838 err_free_irq: 839 free_irq(irq_level, host); 840 err_free_scsi: 841 scsi_host_put(host); 842 err_release: 843 release_region(port_base, 0x10); 844 printk(KERN_INFO "sym53c500_cs: no SCSI devices found\n"); 845 return -ENODEV; 846 847 cs_failed: 848 cs_error(link, last_fn, last_ret); 849 SYM53C500_release(link); 850 return -ENODEV; 851 } /* SYM53C500_config */ 852 853 static int sym53c500_resume(struct pcmcia_device *link) 854 { 855 struct scsi_info_t *info = link->priv; 856 857 /* See earlier comment about manufacturer IDs. */ 858 if ((info->manf_id == MANFID_MACNICA) || 859 (info->manf_id == MANFID_PIONEER) || 860 (info->manf_id == 0x0098)) { 861 outb(0x80, link->io.BasePort1 + 0xd); 862 outb(0x24, link->io.BasePort1 + 0x9); 863 outb(0x04, link->io.BasePort1 + 0xd); 864 } 865 /* 866 * If things don't work after a "resume", 867 * this is a good place to start looking. 868 */ 869 SYM53C500_int_host_reset(link->io.BasePort1); 870 871 return 0; 872 } 873 874 static void 875 SYM53C500_detach(struct pcmcia_device *link) 876 { 877 DEBUG(0, "SYM53C500_detach(0x%p)\n", link); 878 879 SYM53C500_release(link); 880 881 kfree(link->priv); 882 link->priv = NULL; 883 } /* SYM53C500_detach */ 884 885 static int 886 SYM53C500_probe(struct pcmcia_device *link) 887 { 888 struct scsi_info_t *info; 889 890 DEBUG(0, "SYM53C500_attach()\n"); 891 892 /* Create new SCSI device */ 893 info = kmalloc(sizeof(*info), GFP_KERNEL); 894 if (!info) 895 return -ENOMEM; 896 memset(info, 0, sizeof(*info)); 897 info->p_dev = link; 898 link->priv = info; 899 link->io.NumPorts1 = 16; 900 link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO; 901 link->io.IOAddrLines = 10; 902 link->irq.Attributes = IRQ_TYPE_EXCLUSIVE; 903 link->irq.IRQInfo1 = IRQ_LEVEL_ID; 904 link->conf.Attributes = CONF_ENABLE_IRQ; 905 link->conf.IntType = INT_MEMORY_AND_IO; 906 link->conf.Present = PRESENT_OPTION; 907 908 return SYM53C500_config(link); 909 } /* SYM53C500_attach */ 910 911 MODULE_AUTHOR("Bob Tracy <rct@frus.com>"); 912 MODULE_DESCRIPTION("SYM53C500 PCMCIA SCSI driver"); 913 MODULE_LICENSE("GPL"); 914 915 static struct pcmcia_device_id sym53c500_ids[] = { 916 PCMCIA_DEVICE_PROD_ID12("BASICS by New Media Corporation", "SCSI Sym53C500", 0x23c78a9d, 0x0099e7f7), 917 PCMCIA_DEVICE_PROD_ID12("New Media Corporation", "SCSI Bus Toaster Sym53C500", 0x085a850b, 0x45432eb8), 918 PCMCIA_DEVICE_PROD_ID2("SCSI9000", 0x21648f44), 919 PCMCIA_DEVICE_NULL, 920 }; 921 MODULE_DEVICE_TABLE(pcmcia, sym53c500_ids); 922 923 static struct pcmcia_driver sym53c500_cs_driver = { 924 .owner = THIS_MODULE, 925 .drv = { 926 .name = "sym53c500_cs", 927 }, 928 .probe = SYM53C500_probe, 929 .remove = SYM53C500_detach, 930 .id_table = sym53c500_ids, 931 .resume = sym53c500_resume, 932 }; 933 934 static int __init 935 init_sym53c500_cs(void) 936 { 937 return pcmcia_register_driver(&sym53c500_cs_driver); 938 } 939 940 static void __exit 941 exit_sym53c500_cs(void) 942 { 943 pcmcia_unregister_driver(&sym53c500_cs_driver); 944 } 945 946 module_init(init_sym53c500_cs); 947 module_exit(exit_sym53c500_cs); 948