1 /* 2 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family 3 * of PCI-SCSI IO processors. 4 * 5 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr> 6 * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx> 7 * 8 * This driver is derived from the Linux sym53c8xx driver. 9 * Copyright (C) 1998-2000 Gerard Roudier 10 * 11 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been 12 * a port of the FreeBSD ncr driver to Linux-1.2.13. 13 * 14 * The original ncr driver has been written for 386bsd and FreeBSD by 15 * Wolfgang Stanglmeier <wolf@cologne.de> 16 * Stefan Esser <se@mi.Uni-Koeln.de> 17 * Copyright (C) 1994 Wolfgang Stanglmeier 18 * 19 * Other major contributions: 20 * 21 * NVRAM detection and reading. 22 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> 23 * 24 *----------------------------------------------------------------------------- 25 * 26 * This program is free software; you can redistribute it and/or modify 27 * it under the terms of the GNU General Public License as published by 28 * the Free Software Foundation; either version 2 of the License, or 29 * (at your option) any later version. 30 * 31 * This program is distributed in the hope that it will be useful, 32 * but WITHOUT ANY WARRANTY; without even the implied warranty of 33 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 34 * GNU General Public License for more details. 35 * 36 * You should have received a copy of the GNU General Public License 37 * along with this program; if not, write to the Free Software 38 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 39 */ 40 #include <linux/ctype.h> 41 #include <linux/init.h> 42 #include <linux/module.h> 43 #include <linux/moduleparam.h> 44 #include <linux/spinlock.h> 45 #include <scsi/scsi.h> 46 #include <scsi/scsi_tcq.h> 47 #include <scsi/scsi_device.h> 48 #include <scsi/scsi_transport.h> 49 50 #include "sym_glue.h" 51 #include "sym_nvram.h" 52 53 #define NAME53C "sym53c" 54 #define NAME53C8XX "sym53c8xx" 55 56 struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP; 57 unsigned int sym_debug_flags = 0; 58 59 static char *excl_string; 60 static char *safe_string; 61 module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0); 62 module_param_named(burst, sym_driver_setup.burst_order, byte, 0); 63 module_param_named(led, sym_driver_setup.scsi_led, byte, 0); 64 module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0); 65 module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0); 66 module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0); 67 module_param_named(hostid, sym_driver_setup.host_id, byte, 0); 68 module_param_named(verb, sym_driver_setup.verbose, byte, 0); 69 module_param_named(debug, sym_debug_flags, uint, 0); 70 module_param_named(settle, sym_driver_setup.settle_delay, byte, 0); 71 module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0); 72 module_param_named(excl, excl_string, charp, 0); 73 module_param_named(safe, safe_string, charp, 0); 74 75 MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default"); 76 MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers"); 77 MODULE_PARM_DESC(led, "Set to 1 to enable LED support"); 78 MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3"); 79 MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole"); 80 MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error"); 81 MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters"); 82 MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive"); 83 MODULE_PARM_DESC(debug, "Set bits to enable debugging"); 84 MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3"); 85 MODULE_PARM_DESC(nvram, "Option currently not used"); 86 MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached"); 87 MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\""); 88 89 MODULE_LICENSE("GPL"); 90 MODULE_VERSION(SYM_VERSION); 91 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>"); 92 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters"); 93 94 static void sym2_setup_params(void) 95 { 96 char *p = excl_string; 97 int xi = 0; 98 99 while (p && (xi < 8)) { 100 char *next_p; 101 int val = (int) simple_strtoul(p, &next_p, 0); 102 sym_driver_setup.excludes[xi++] = val; 103 p = next_p; 104 } 105 106 if (safe_string) { 107 if (*safe_string == 'y') { 108 sym_driver_setup.max_tag = 0; 109 sym_driver_setup.burst_order = 0; 110 sym_driver_setup.scsi_led = 0; 111 sym_driver_setup.scsi_diff = 1; 112 sym_driver_setup.irq_mode = 0; 113 sym_driver_setup.scsi_bus_check = 2; 114 sym_driver_setup.host_id = 7; 115 sym_driver_setup.verbose = 2; 116 sym_driver_setup.settle_delay = 10; 117 sym_driver_setup.use_nvram = 1; 118 } else if (*safe_string != 'n') { 119 printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s" 120 " passed to safe option", safe_string); 121 } 122 } 123 } 124 125 static struct scsi_transport_template *sym2_transport_template = NULL; 126 127 /* 128 * Driver private area in the SCSI command structure. 129 */ 130 struct sym_ucmd { /* Override the SCSI pointer structure */ 131 struct completion *eh_done; /* SCSI error handling */ 132 }; 133 134 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp)) 135 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host) 136 137 /* 138 * Complete a pending CAM CCB. 139 */ 140 void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd) 141 { 142 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 143 BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd)); 144 145 if (ucmd->eh_done) 146 complete(ucmd->eh_done); 147 148 scsi_dma_unmap(cmd); 149 cmd->scsi_done(cmd); 150 } 151 152 /* 153 * Tell the SCSI layer about a BUS RESET. 154 */ 155 void sym_xpt_async_bus_reset(struct sym_hcb *np) 156 { 157 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np)); 158 np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ; 159 np->s.settle_time_valid = 1; 160 if (sym_verbose >= 2) 161 printf_info("%s: command processing suspended for %d seconds\n", 162 sym_name(np), sym_driver_setup.settle_delay); 163 } 164 165 /* 166 * Choose the more appropriate CAM status if 167 * the IO encountered an extended error. 168 */ 169 static int sym_xerr_cam_status(int cam_status, int x_status) 170 { 171 if (x_status) { 172 if (x_status & XE_PARITY_ERR) 173 cam_status = DID_PARITY; 174 else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN)) 175 cam_status = DID_ERROR; 176 else if (x_status & XE_BAD_PHASE) 177 cam_status = DID_ERROR; 178 else 179 cam_status = DID_ERROR; 180 } 181 return cam_status; 182 } 183 184 /* 185 * Build CAM result for a failed or auto-sensed IO. 186 */ 187 void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) 188 { 189 struct scsi_cmnd *cmd = cp->cmd; 190 u_int cam_status, scsi_status, drv_status; 191 192 drv_status = 0; 193 cam_status = DID_OK; 194 scsi_status = cp->ssss_status; 195 196 if (cp->host_flags & HF_SENSE) { 197 scsi_status = cp->sv_scsi_status; 198 resid = cp->sv_resid; 199 if (sym_verbose && cp->sv_xerr_status) 200 sym_print_xerr(cmd, cp->sv_xerr_status); 201 if (cp->host_status == HS_COMPLETE && 202 cp->ssss_status == S_GOOD && 203 cp->xerr_status == 0) { 204 cam_status = sym_xerr_cam_status(DID_OK, 205 cp->sv_xerr_status); 206 drv_status = DRIVER_SENSE; 207 /* 208 * Bounce back the sense data to user. 209 */ 210 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 211 memcpy(cmd->sense_buffer, cp->sns_bbuf, 212 min(SCSI_SENSE_BUFFERSIZE, SYM_SNS_BBUF_LEN)); 213 #if 0 214 /* 215 * If the device reports a UNIT ATTENTION condition 216 * due to a RESET condition, we should consider all 217 * disconnect CCBs for this unit as aborted. 218 */ 219 if (1) { 220 u_char *p; 221 p = (u_char *) cmd->sense_data; 222 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29) 223 sym_clear_tasks(np, DID_ABORT, 224 cp->target,cp->lun, -1); 225 } 226 #endif 227 } else { 228 /* 229 * Error return from our internal request sense. This 230 * is bad: we must clear the contingent allegiance 231 * condition otherwise the device will always return 232 * BUSY. Use a big stick. 233 */ 234 sym_reset_scsi_target(np, cmd->device->id); 235 cam_status = DID_ERROR; 236 } 237 } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */ 238 cam_status = DID_OK; 239 else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */ 240 cam_status = DID_NO_CONNECT; 241 else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/ 242 cam_status = DID_ERROR; 243 else { /* Extended error */ 244 if (sym_verbose) { 245 sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n", 246 cp->host_status, cp->ssss_status, 247 cp->xerr_status); 248 } 249 /* 250 * Set the most appropriate value for CAM status. 251 */ 252 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status); 253 } 254 scsi_set_resid(cmd, resid); 255 cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status; 256 } 257 258 static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd) 259 { 260 int segment; 261 int use_sg; 262 263 cp->data_len = 0; 264 265 use_sg = scsi_dma_map(cmd); 266 if (use_sg > 0) { 267 struct scatterlist *sg; 268 struct sym_tcb *tp = &np->target[cp->target]; 269 struct sym_tblmove *data; 270 271 if (use_sg > SYM_CONF_MAX_SG) { 272 scsi_dma_unmap(cmd); 273 return -1; 274 } 275 276 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg]; 277 278 scsi_for_each_sg(cmd, sg, use_sg, segment) { 279 dma_addr_t baddr = sg_dma_address(sg); 280 unsigned int len = sg_dma_len(sg); 281 282 if ((len & 1) && (tp->head.wval & EWS)) { 283 len++; 284 cp->odd_byte_adjustment++; 285 } 286 287 sym_build_sge(np, &data[segment], baddr, len); 288 cp->data_len += len; 289 } 290 } else { 291 segment = -2; 292 } 293 294 return segment; 295 } 296 297 /* 298 * Queue a SCSI command. 299 */ 300 static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd) 301 { 302 struct scsi_device *sdev = cmd->device; 303 struct sym_tcb *tp; 304 struct sym_lcb *lp; 305 struct sym_ccb *cp; 306 int order; 307 308 /* 309 * Retrieve the target descriptor. 310 */ 311 tp = &np->target[sdev->id]; 312 313 /* 314 * Select tagged/untagged. 315 */ 316 lp = sym_lp(tp, sdev->lun); 317 order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0; 318 319 /* 320 * Queue the SCSI IO. 321 */ 322 cp = sym_get_ccb(np, cmd, order); 323 if (!cp) 324 return 1; /* Means resource shortage */ 325 sym_queue_scsiio(np, cmd, cp); 326 return 0; 327 } 328 329 /* 330 * Setup buffers and pointers that address the CDB. 331 */ 332 static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) 333 { 334 memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len); 335 336 cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]); 337 cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len); 338 339 return 0; 340 } 341 342 /* 343 * Setup pointers that address the data and start the I/O. 344 */ 345 int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) 346 { 347 u32 lastp, goalp; 348 int dir; 349 350 /* 351 * Build the CDB. 352 */ 353 if (sym_setup_cdb(np, cmd, cp)) 354 goto out_abort; 355 356 /* 357 * No direction means no data. 358 */ 359 dir = cmd->sc_data_direction; 360 if (dir != DMA_NONE) { 361 cp->segments = sym_scatter(np, cp, cmd); 362 if (cp->segments < 0) { 363 sym_set_cam_status(cmd, DID_ERROR); 364 goto out_abort; 365 } 366 367 /* 368 * No segments means no data. 369 */ 370 if (!cp->segments) 371 dir = DMA_NONE; 372 } else { 373 cp->data_len = 0; 374 cp->segments = 0; 375 } 376 377 /* 378 * Set the data pointer. 379 */ 380 switch (dir) { 381 case DMA_BIDIRECTIONAL: 382 scmd_printk(KERN_INFO, cmd, "got DMA_BIDIRECTIONAL command"); 383 sym_set_cam_status(cmd, DID_ERROR); 384 goto out_abort; 385 case DMA_TO_DEVICE: 386 goalp = SCRIPTA_BA(np, data_out2) + 8; 387 lastp = goalp - 8 - (cp->segments * (2*4)); 388 break; 389 case DMA_FROM_DEVICE: 390 cp->host_flags |= HF_DATA_IN; 391 goalp = SCRIPTA_BA(np, data_in2) + 8; 392 lastp = goalp - 8 - (cp->segments * (2*4)); 393 break; 394 case DMA_NONE: 395 default: 396 lastp = goalp = SCRIPTB_BA(np, no_data); 397 break; 398 } 399 400 /* 401 * Set all pointers values needed by SCRIPTS. 402 */ 403 cp->phys.head.lastp = cpu_to_scr(lastp); 404 cp->phys.head.savep = cpu_to_scr(lastp); 405 cp->startp = cp->phys.head.savep; 406 cp->goalp = cpu_to_scr(goalp); 407 408 /* 409 * When `#ifed 1', the code below makes the driver 410 * panic on the first attempt to write to a SCSI device. 411 * It is the first test we want to do after a driver 412 * change that does not seem obviously safe. :) 413 */ 414 #if 0 415 switch (cp->cdb_buf[0]) { 416 case 0x0A: case 0x2A: case 0xAA: 417 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n"); 418 break; 419 default: 420 break; 421 } 422 #endif 423 424 /* 425 * activate this job. 426 */ 427 sym_put_start_queue(np, cp); 428 return 0; 429 430 out_abort: 431 sym_free_ccb(np, cp); 432 sym_xpt_done(np, cmd); 433 return 0; 434 } 435 436 437 /* 438 * timer daemon. 439 * 440 * Misused to keep the driver running when 441 * interrupts are not configured correctly. 442 */ 443 static void sym_timer(struct sym_hcb *np) 444 { 445 unsigned long thistime = jiffies; 446 447 /* 448 * Restart the timer. 449 */ 450 np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL; 451 add_timer(&np->s.timer); 452 453 /* 454 * If we are resetting the ncr, wait for settle_time before 455 * clearing it. Then command processing will be resumed. 456 */ 457 if (np->s.settle_time_valid) { 458 if (time_before_eq(np->s.settle_time, thistime)) { 459 if (sym_verbose >= 2 ) 460 printk("%s: command processing resumed\n", 461 sym_name(np)); 462 np->s.settle_time_valid = 0; 463 } 464 return; 465 } 466 467 /* 468 * Nothing to do for now, but that may come. 469 */ 470 if (np->s.lasttime + 4*HZ < thistime) { 471 np->s.lasttime = thistime; 472 } 473 474 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS 475 /* 476 * Some way-broken PCI bridges may lead to 477 * completions being lost when the clearing 478 * of the INTFLY flag by the CPU occurs 479 * concurrently with the chip raising this flag. 480 * If this ever happen, lost completions will 481 * be reaped here. 482 */ 483 sym_wakeup_done(np); 484 #endif 485 } 486 487 488 /* 489 * PCI BUS error handler. 490 */ 491 void sym_log_bus_error(struct Scsi_Host *shost) 492 { 493 struct sym_data *sym_data = shost_priv(shost); 494 struct pci_dev *pdev = sym_data->pdev; 495 unsigned short pci_sts; 496 pci_read_config_word(pdev, PCI_STATUS, &pci_sts); 497 if (pci_sts & 0xf900) { 498 pci_write_config_word(pdev, PCI_STATUS, pci_sts); 499 shost_printk(KERN_WARNING, shost, 500 "PCI bus error: status = 0x%04x\n", pci_sts & 0xf900); 501 } 502 } 503 504 /* 505 * queuecommand method. Entered with the host adapter lock held and 506 * interrupts disabled. 507 */ 508 static int sym53c8xx_queue_command_lck(struct scsi_cmnd *cmd, 509 void (*done)(struct scsi_cmnd *)) 510 { 511 struct sym_hcb *np = SYM_SOFTC_PTR(cmd); 512 struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd); 513 int sts = 0; 514 515 cmd->scsi_done = done; 516 memset(ucp, 0, sizeof(*ucp)); 517 518 /* 519 * Shorten our settle_time if needed for 520 * this command not to time out. 521 */ 522 if (np->s.settle_time_valid && cmd->request->timeout) { 523 unsigned long tlimit = jiffies + cmd->request->timeout; 524 tlimit -= SYM_CONF_TIMER_INTERVAL*2; 525 if (time_after(np->s.settle_time, tlimit)) { 526 np->s.settle_time = tlimit; 527 } 528 } 529 530 if (np->s.settle_time_valid) 531 return SCSI_MLQUEUE_HOST_BUSY; 532 533 sts = sym_queue_command(np, cmd); 534 if (sts) 535 return SCSI_MLQUEUE_HOST_BUSY; 536 return 0; 537 } 538 539 static DEF_SCSI_QCMD(sym53c8xx_queue_command) 540 541 /* 542 * Linux entry point of the interrupt handler. 543 */ 544 static irqreturn_t sym53c8xx_intr(int irq, void *dev_id) 545 { 546 struct Scsi_Host *shost = dev_id; 547 struct sym_data *sym_data = shost_priv(shost); 548 irqreturn_t result; 549 550 /* Avoid spinloop trying to handle interrupts on frozen device */ 551 if (pci_channel_offline(sym_data->pdev)) 552 return IRQ_NONE; 553 554 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("["); 555 556 spin_lock(shost->host_lock); 557 result = sym_interrupt(shost); 558 spin_unlock(shost->host_lock); 559 560 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n"); 561 562 return result; 563 } 564 565 /* 566 * Linux entry point of the timer handler 567 */ 568 static void sym53c8xx_timer(unsigned long npref) 569 { 570 struct sym_hcb *np = (struct sym_hcb *)npref; 571 unsigned long flags; 572 573 spin_lock_irqsave(np->s.host->host_lock, flags); 574 sym_timer(np); 575 spin_unlock_irqrestore(np->s.host->host_lock, flags); 576 } 577 578 579 /* 580 * What the eh thread wants us to perform. 581 */ 582 #define SYM_EH_ABORT 0 583 #define SYM_EH_DEVICE_RESET 1 584 #define SYM_EH_BUS_RESET 2 585 #define SYM_EH_HOST_RESET 3 586 587 /* 588 * Generic method for our eh processing. 589 * The 'op' argument tells what we have to do. 590 */ 591 static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd) 592 { 593 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 594 struct Scsi_Host *shost = cmd->device->host; 595 struct sym_data *sym_data = shost_priv(shost); 596 struct pci_dev *pdev = sym_data->pdev; 597 struct sym_hcb *np = sym_data->ncb; 598 SYM_QUEHEAD *qp; 599 int cmd_queued = 0; 600 int sts = -1; 601 struct completion eh_done; 602 603 scmd_printk(KERN_WARNING, cmd, "%s operation started\n", opname); 604 605 /* We may be in an error condition because the PCI bus 606 * went down. In this case, we need to wait until the 607 * PCI bus is reset, the card is reset, and only then 608 * proceed with the scsi error recovery. There's no 609 * point in hurrying; take a leisurely wait. 610 */ 611 #define WAIT_FOR_PCI_RECOVERY 35 612 if (pci_channel_offline(pdev)) { 613 int finished_reset = 0; 614 init_completion(&eh_done); 615 spin_lock_irq(shost->host_lock); 616 /* Make sure we didn't race */ 617 if (pci_channel_offline(pdev)) { 618 BUG_ON(sym_data->io_reset); 619 sym_data->io_reset = &eh_done; 620 } else { 621 finished_reset = 1; 622 } 623 spin_unlock_irq(shost->host_lock); 624 if (!finished_reset) 625 finished_reset = wait_for_completion_timeout 626 (sym_data->io_reset, 627 WAIT_FOR_PCI_RECOVERY*HZ); 628 spin_lock_irq(shost->host_lock); 629 sym_data->io_reset = NULL; 630 spin_unlock_irq(shost->host_lock); 631 if (!finished_reset) 632 return SCSI_FAILED; 633 } 634 635 spin_lock_irq(shost->host_lock); 636 /* This one is queued in some place -> to wait for completion */ 637 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { 638 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); 639 if (cp->cmd == cmd) { 640 cmd_queued = 1; 641 break; 642 } 643 } 644 645 /* Try to proceed the operation we have been asked for */ 646 sts = -1; 647 switch(op) { 648 case SYM_EH_ABORT: 649 sts = sym_abort_scsiio(np, cmd, 1); 650 break; 651 case SYM_EH_DEVICE_RESET: 652 sts = sym_reset_scsi_target(np, cmd->device->id); 653 break; 654 case SYM_EH_BUS_RESET: 655 sym_reset_scsi_bus(np, 1); 656 sts = 0; 657 break; 658 case SYM_EH_HOST_RESET: 659 sym_reset_scsi_bus(np, 0); 660 sym_start_up(shost, 1); 661 sts = 0; 662 break; 663 default: 664 break; 665 } 666 667 /* On error, restore everything and cross fingers :) */ 668 if (sts) 669 cmd_queued = 0; 670 671 if (cmd_queued) { 672 init_completion(&eh_done); 673 ucmd->eh_done = &eh_done; 674 spin_unlock_irq(shost->host_lock); 675 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) { 676 ucmd->eh_done = NULL; 677 sts = -2; 678 } 679 } else { 680 spin_unlock_irq(shost->host_lock); 681 } 682 683 dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname, 684 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); 685 return sts ? SCSI_FAILED : SCSI_SUCCESS; 686 } 687 688 689 /* 690 * Error handlers called from the eh thread (one thread per HBA). 691 */ 692 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd) 693 { 694 return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd); 695 } 696 697 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd) 698 { 699 return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd); 700 } 701 702 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd) 703 { 704 return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd); 705 } 706 707 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd) 708 { 709 return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd); 710 } 711 712 /* 713 * Tune device queuing depth, according to various limits. 714 */ 715 static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags) 716 { 717 struct sym_lcb *lp = sym_lp(tp, lun); 718 u_short oldtags; 719 720 if (!lp) 721 return; 722 723 oldtags = lp->s.reqtags; 724 725 if (reqtags > lp->s.scdev_depth) 726 reqtags = lp->s.scdev_depth; 727 728 lp->s.reqtags = reqtags; 729 730 if (reqtags != oldtags) { 731 dev_info(&tp->starget->dev, 732 "tagged command queuing %s, command queue depth %d.\n", 733 lp->s.reqtags ? "enabled" : "disabled", reqtags); 734 } 735 } 736 737 static int sym53c8xx_slave_alloc(struct scsi_device *sdev) 738 { 739 struct sym_hcb *np = sym_get_hcb(sdev->host); 740 struct sym_tcb *tp = &np->target[sdev->id]; 741 struct sym_lcb *lp; 742 unsigned long flags; 743 int error; 744 745 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN) 746 return -ENXIO; 747 748 spin_lock_irqsave(np->s.host->host_lock, flags); 749 750 /* 751 * Fail the device init if the device is flagged NOSCAN at BOOT in 752 * the NVRAM. This may speed up boot and maintain coherency with 753 * BIOS device numbering. Clearing the flag allows the user to 754 * rescan skipped devices later. We also return an error for 755 * devices not flagged for SCAN LUNS in the NVRAM since some single 756 * lun devices behave badly when asked for a non zero LUN. 757 */ 758 759 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) { 760 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED; 761 starget_printk(KERN_INFO, sdev->sdev_target, 762 "Scan at boot disabled in NVRAM\n"); 763 error = -ENXIO; 764 goto out; 765 } 766 767 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) { 768 if (sdev->lun != 0) { 769 error = -ENXIO; 770 goto out; 771 } 772 starget_printk(KERN_INFO, sdev->sdev_target, 773 "Multiple LUNs disabled in NVRAM\n"); 774 } 775 776 lp = sym_alloc_lcb(np, sdev->id, sdev->lun); 777 if (!lp) { 778 error = -ENOMEM; 779 goto out; 780 } 781 if (tp->nlcb == 1) 782 tp->starget = sdev->sdev_target; 783 784 spi_min_period(tp->starget) = tp->usr_period; 785 spi_max_width(tp->starget) = tp->usr_width; 786 787 error = 0; 788 out: 789 spin_unlock_irqrestore(np->s.host->host_lock, flags); 790 791 return error; 792 } 793 794 /* 795 * Linux entry point for device queue sizing. 796 */ 797 static int sym53c8xx_slave_configure(struct scsi_device *sdev) 798 { 799 struct sym_hcb *np = sym_get_hcb(sdev->host); 800 struct sym_tcb *tp = &np->target[sdev->id]; 801 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 802 int reqtags, depth_to_use; 803 804 /* 805 * Get user flags. 806 */ 807 lp->curr_flags = lp->user_flags; 808 809 /* 810 * Select queue depth from driver setup. 811 * Do not use more than configured by user. 812 * Use at least 1. 813 * Do not use more than our maximum. 814 */ 815 reqtags = sym_driver_setup.max_tag; 816 if (reqtags > tp->usrtags) 817 reqtags = tp->usrtags; 818 if (!sdev->tagged_supported) 819 reqtags = 0; 820 if (reqtags > SYM_CONF_MAX_TAG) 821 reqtags = SYM_CONF_MAX_TAG; 822 depth_to_use = reqtags ? reqtags : 1; 823 scsi_change_queue_depth(sdev, depth_to_use); 824 lp->s.scdev_depth = depth_to_use; 825 sym_tune_dev_queuing(tp, sdev->lun, reqtags); 826 827 if (!spi_initial_dv(sdev->sdev_target)) 828 spi_dv_device(sdev); 829 830 return 0; 831 } 832 833 static void sym53c8xx_slave_destroy(struct scsi_device *sdev) 834 { 835 struct sym_hcb *np = sym_get_hcb(sdev->host); 836 struct sym_tcb *tp = &np->target[sdev->id]; 837 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 838 unsigned long flags; 839 840 /* if slave_alloc returned before allocating a sym_lcb, return */ 841 if (!lp) 842 return; 843 844 spin_lock_irqsave(np->s.host->host_lock, flags); 845 846 if (lp->busy_itlq || lp->busy_itl) { 847 /* 848 * This really shouldn't happen, but we can't return an error 849 * so let's try to stop all on-going I/O. 850 */ 851 starget_printk(KERN_WARNING, tp->starget, 852 "Removing busy LCB (%d)\n", (u8)sdev->lun); 853 sym_reset_scsi_bus(np, 1); 854 } 855 856 if (sym_free_lcb(np, sdev->id, sdev->lun) == 0) { 857 /* 858 * It was the last unit for this target. 859 */ 860 tp->head.sval = 0; 861 tp->head.wval = np->rv_scntl3; 862 tp->head.uval = 0; 863 tp->tgoal.check_nego = 1; 864 tp->starget = NULL; 865 } 866 867 spin_unlock_irqrestore(np->s.host->host_lock, flags); 868 } 869 870 /* 871 * Linux entry point for info() function 872 */ 873 static const char *sym53c8xx_info (struct Scsi_Host *host) 874 { 875 return SYM_DRIVER_NAME; 876 } 877 878 879 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 880 /* 881 * Proc file system stuff 882 * 883 * A read operation returns adapter information. 884 * A write operation is a control command. 885 * The string is parsed in the driver code and the command is passed 886 * to the sym_usercmd() function. 887 */ 888 889 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 890 891 struct sym_usrcmd { 892 u_long target; 893 u_long lun; 894 u_long data; 895 u_long cmd; 896 }; 897 898 #define UC_SETSYNC 10 899 #define UC_SETTAGS 11 900 #define UC_SETDEBUG 12 901 #define UC_SETWIDE 14 902 #define UC_SETFLAG 15 903 #define UC_SETVERBOSE 17 904 #define UC_RESETDEV 18 905 #define UC_CLEARDEV 19 906 907 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc) 908 { 909 struct sym_tcb *tp; 910 int t, l; 911 912 switch (uc->cmd) { 913 case 0: return; 914 915 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 916 case UC_SETDEBUG: 917 sym_debug_flags = uc->data; 918 break; 919 #endif 920 case UC_SETVERBOSE: 921 np->verbose = uc->data; 922 break; 923 default: 924 /* 925 * We assume that other commands apply to targets. 926 * This should always be the case and avoid the below 927 * 4 lines to be repeated 6 times. 928 */ 929 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) { 930 if (!((uc->target >> t) & 1)) 931 continue; 932 tp = &np->target[t]; 933 if (!tp->nlcb) 934 continue; 935 936 switch (uc->cmd) { 937 938 case UC_SETSYNC: 939 if (!uc->data || uc->data >= 255) { 940 tp->tgoal.iu = tp->tgoal.dt = 941 tp->tgoal.qas = 0; 942 tp->tgoal.offset = 0; 943 } else if (uc->data <= 9 && np->minsync_dt) { 944 if (uc->data < np->minsync_dt) 945 uc->data = np->minsync_dt; 946 tp->tgoal.iu = tp->tgoal.dt = 947 tp->tgoal.qas = 1; 948 tp->tgoal.width = 1; 949 tp->tgoal.period = uc->data; 950 tp->tgoal.offset = np->maxoffs_dt; 951 } else { 952 if (uc->data < np->minsync) 953 uc->data = np->minsync; 954 tp->tgoal.iu = tp->tgoal.dt = 955 tp->tgoal.qas = 0; 956 tp->tgoal.period = uc->data; 957 tp->tgoal.offset = np->maxoffs; 958 } 959 tp->tgoal.check_nego = 1; 960 break; 961 case UC_SETWIDE: 962 tp->tgoal.width = uc->data ? 1 : 0; 963 tp->tgoal.check_nego = 1; 964 break; 965 case UC_SETTAGS: 966 for (l = 0; l < SYM_CONF_MAX_LUN; l++) 967 sym_tune_dev_queuing(tp, l, uc->data); 968 break; 969 case UC_RESETDEV: 970 tp->to_reset = 1; 971 np->istat_sem = SEM; 972 OUTB(np, nc_istat, SIGP|SEM); 973 break; 974 case UC_CLEARDEV: 975 for (l = 0; l < SYM_CONF_MAX_LUN; l++) { 976 struct sym_lcb *lp = sym_lp(tp, l); 977 if (lp) lp->to_clear = 1; 978 } 979 np->istat_sem = SEM; 980 OUTB(np, nc_istat, SIGP|SEM); 981 break; 982 case UC_SETFLAG: 983 tp->usrflags = uc->data; 984 break; 985 } 986 } 987 break; 988 } 989 } 990 991 static int sym_skip_spaces(char *ptr, int len) 992 { 993 int cnt, c; 994 995 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--); 996 997 return (len - cnt); 998 } 999 1000 static int get_int_arg(char *ptr, int len, u_long *pv) 1001 { 1002 char *end; 1003 1004 *pv = simple_strtoul(ptr, &end, 10); 1005 return (end - ptr); 1006 } 1007 1008 static int is_keyword(char *ptr, int len, char *verb) 1009 { 1010 int verb_len = strlen(verb); 1011 1012 if (len >= verb_len && !memcmp(verb, ptr, verb_len)) 1013 return verb_len; 1014 else 1015 return 0; 1016 } 1017 1018 #define SKIP_SPACES(ptr, len) \ 1019 if ((arg_len = sym_skip_spaces(ptr, len)) < 1) \ 1020 return -EINVAL; \ 1021 ptr += arg_len; len -= arg_len; 1022 1023 #define GET_INT_ARG(ptr, len, v) \ 1024 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \ 1025 return -EINVAL; \ 1026 ptr += arg_len; len -= arg_len; 1027 1028 1029 /* 1030 * Parse a control command 1031 */ 1032 1033 static int sym_user_command(struct Scsi_Host *shost, char *buffer, int length) 1034 { 1035 struct sym_hcb *np = sym_get_hcb(shost); 1036 char *ptr = buffer; 1037 int len = length; 1038 struct sym_usrcmd cmd, *uc = &cmd; 1039 int arg_len; 1040 u_long target; 1041 1042 memset(uc, 0, sizeof(*uc)); 1043 1044 if (len > 0 && ptr[len-1] == '\n') 1045 --len; 1046 1047 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0) 1048 uc->cmd = UC_SETSYNC; 1049 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0) 1050 uc->cmd = UC_SETTAGS; 1051 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0) 1052 uc->cmd = UC_SETVERBOSE; 1053 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0) 1054 uc->cmd = UC_SETWIDE; 1055 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1056 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0) 1057 uc->cmd = UC_SETDEBUG; 1058 #endif 1059 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0) 1060 uc->cmd = UC_SETFLAG; 1061 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0) 1062 uc->cmd = UC_RESETDEV; 1063 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0) 1064 uc->cmd = UC_CLEARDEV; 1065 else 1066 arg_len = 0; 1067 1068 #ifdef DEBUG_PROC_INFO 1069 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd); 1070 #endif 1071 1072 if (!arg_len) 1073 return -EINVAL; 1074 ptr += arg_len; len -= arg_len; 1075 1076 switch(uc->cmd) { 1077 case UC_SETSYNC: 1078 case UC_SETTAGS: 1079 case UC_SETWIDE: 1080 case UC_SETFLAG: 1081 case UC_RESETDEV: 1082 case UC_CLEARDEV: 1083 SKIP_SPACES(ptr, len); 1084 if ((arg_len = is_keyword(ptr, len, "all")) != 0) { 1085 ptr += arg_len; len -= arg_len; 1086 uc->target = ~0; 1087 } else { 1088 GET_INT_ARG(ptr, len, target); 1089 uc->target = (1<<target); 1090 #ifdef DEBUG_PROC_INFO 1091 printk("sym_user_command: target=%ld\n", target); 1092 #endif 1093 } 1094 break; 1095 } 1096 1097 switch(uc->cmd) { 1098 case UC_SETVERBOSE: 1099 case UC_SETSYNC: 1100 case UC_SETTAGS: 1101 case UC_SETWIDE: 1102 SKIP_SPACES(ptr, len); 1103 GET_INT_ARG(ptr, len, uc->data); 1104 #ifdef DEBUG_PROC_INFO 1105 printk("sym_user_command: data=%ld\n", uc->data); 1106 #endif 1107 break; 1108 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1109 case UC_SETDEBUG: 1110 while (len > 0) { 1111 SKIP_SPACES(ptr, len); 1112 if ((arg_len = is_keyword(ptr, len, "alloc"))) 1113 uc->data |= DEBUG_ALLOC; 1114 else if ((arg_len = is_keyword(ptr, len, "phase"))) 1115 uc->data |= DEBUG_PHASE; 1116 else if ((arg_len = is_keyword(ptr, len, "queue"))) 1117 uc->data |= DEBUG_QUEUE; 1118 else if ((arg_len = is_keyword(ptr, len, "result"))) 1119 uc->data |= DEBUG_RESULT; 1120 else if ((arg_len = is_keyword(ptr, len, "scatter"))) 1121 uc->data |= DEBUG_SCATTER; 1122 else if ((arg_len = is_keyword(ptr, len, "script"))) 1123 uc->data |= DEBUG_SCRIPT; 1124 else if ((arg_len = is_keyword(ptr, len, "tiny"))) 1125 uc->data |= DEBUG_TINY; 1126 else if ((arg_len = is_keyword(ptr, len, "timing"))) 1127 uc->data |= DEBUG_TIMING; 1128 else if ((arg_len = is_keyword(ptr, len, "nego"))) 1129 uc->data |= DEBUG_NEGO; 1130 else if ((arg_len = is_keyword(ptr, len, "tags"))) 1131 uc->data |= DEBUG_TAGS; 1132 else if ((arg_len = is_keyword(ptr, len, "pointer"))) 1133 uc->data |= DEBUG_POINTER; 1134 else 1135 return -EINVAL; 1136 ptr += arg_len; len -= arg_len; 1137 } 1138 #ifdef DEBUG_PROC_INFO 1139 printk("sym_user_command: data=%ld\n", uc->data); 1140 #endif 1141 break; 1142 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */ 1143 case UC_SETFLAG: 1144 while (len > 0) { 1145 SKIP_SPACES(ptr, len); 1146 if ((arg_len = is_keyword(ptr, len, "no_disc"))) 1147 uc->data &= ~SYM_DISC_ENABLED; 1148 else 1149 return -EINVAL; 1150 ptr += arg_len; len -= arg_len; 1151 } 1152 break; 1153 default: 1154 break; 1155 } 1156 1157 if (len) 1158 return -EINVAL; 1159 else { 1160 unsigned long flags; 1161 1162 spin_lock_irqsave(shost->host_lock, flags); 1163 sym_exec_user_command(np, uc); 1164 spin_unlock_irqrestore(shost->host_lock, flags); 1165 } 1166 return length; 1167 } 1168 1169 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */ 1170 1171 1172 /* 1173 * Copy formatted information into the input buffer. 1174 */ 1175 static int sym_show_info(struct seq_file *m, struct Scsi_Host *shost) 1176 { 1177 #ifdef SYM_LINUX_USER_INFO_SUPPORT 1178 struct sym_data *sym_data = shost_priv(shost); 1179 struct pci_dev *pdev = sym_data->pdev; 1180 struct sym_hcb *np = sym_data->ncb; 1181 1182 seq_printf(m, "Chip " NAME53C "%s, device id 0x%x, " 1183 "revision id 0x%x\n", np->s.chip_name, 1184 pdev->device, pdev->revision); 1185 seq_printf(m, "At PCI address %s, IRQ %u\n", 1186 pci_name(pdev), pdev->irq); 1187 seq_printf(m, "Min. period factor %d, %s SCSI BUS%s\n", 1188 (int) (np->minsync_dt ? np->minsync_dt : np->minsync), 1189 np->maxwide ? "Wide" : "Narrow", 1190 np->minsync_dt ? ", DT capable" : ""); 1191 1192 seq_printf(m, "Max. started commands %d, " 1193 "max. commands per LUN %d\n", 1194 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG); 1195 1196 return 0; 1197 #else 1198 return -EINVAL; 1199 #endif /* SYM_LINUX_USER_INFO_SUPPORT */ 1200 } 1201 1202 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */ 1203 1204 /* 1205 * Free resources claimed by sym_iomap_device(). Note that 1206 * sym_free_resources() should be used instead of this function after calling 1207 * sym_attach(). 1208 */ 1209 static void sym_iounmap_device(struct sym_device *device) 1210 { 1211 if (device->s.ioaddr) 1212 pci_iounmap(device->pdev, device->s.ioaddr); 1213 if (device->s.ramaddr) 1214 pci_iounmap(device->pdev, device->s.ramaddr); 1215 } 1216 1217 /* 1218 * Free controller resources. 1219 */ 1220 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev, 1221 int do_free_irq) 1222 { 1223 /* 1224 * Free O/S specific resources. 1225 */ 1226 if (do_free_irq) 1227 free_irq(pdev->irq, np->s.host); 1228 if (np->s.ioaddr) 1229 pci_iounmap(pdev, np->s.ioaddr); 1230 if (np->s.ramaddr) 1231 pci_iounmap(pdev, np->s.ramaddr); 1232 /* 1233 * Free O/S independent resources. 1234 */ 1235 sym_hcb_free(np); 1236 1237 sym_mfree_dma(np, sizeof(*np), "HCB"); 1238 } 1239 1240 /* 1241 * Host attach and initialisations. 1242 * 1243 * Allocate host data and ncb structure. 1244 * Remap MMIO region. 1245 * Do chip initialization. 1246 * If all is OK, install interrupt handling and 1247 * start the timer daemon. 1248 */ 1249 static struct Scsi_Host *sym_attach(struct scsi_host_template *tpnt, int unit, 1250 struct sym_device *dev) 1251 { 1252 struct sym_data *sym_data; 1253 struct sym_hcb *np = NULL; 1254 struct Scsi_Host *shost = NULL; 1255 struct pci_dev *pdev = dev->pdev; 1256 unsigned long flags; 1257 struct sym_fw *fw; 1258 int do_free_irq = 0; 1259 1260 printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n", 1261 unit, dev->chip.name, pdev->revision, pci_name(pdev), 1262 pdev->irq); 1263 1264 /* 1265 * Get the firmware for this chip. 1266 */ 1267 fw = sym_find_firmware(&dev->chip); 1268 if (!fw) 1269 goto attach_failed; 1270 1271 shost = scsi_host_alloc(tpnt, sizeof(*sym_data)); 1272 if (!shost) 1273 goto attach_failed; 1274 sym_data = shost_priv(shost); 1275 1276 /* 1277 * Allocate immediately the host control block, 1278 * since we are only expecting to succeed. :) 1279 * We keep track in the HCB of all the resources that 1280 * are to be released on error. 1281 */ 1282 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB"); 1283 if (!np) 1284 goto attach_failed; 1285 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */ 1286 sym_data->ncb = np; 1287 sym_data->pdev = pdev; 1288 np->s.host = shost; 1289 1290 pci_set_drvdata(pdev, shost); 1291 1292 /* 1293 * Copy some useful infos to the HCB. 1294 */ 1295 np->hcb_ba = vtobus(np); 1296 np->verbose = sym_driver_setup.verbose; 1297 np->s.unit = unit; 1298 np->features = dev->chip.features; 1299 np->clock_divn = dev->chip.nr_divisor; 1300 np->maxoffs = dev->chip.offset_max; 1301 np->maxburst = dev->chip.burst_max; 1302 np->myaddr = dev->host_id; 1303 np->mmio_ba = (u32)dev->mmio_base; 1304 np->ram_ba = (u32)dev->ram_base; 1305 np->s.ioaddr = dev->s.ioaddr; 1306 np->s.ramaddr = dev->s.ramaddr; 1307 1308 /* 1309 * Edit its name. 1310 */ 1311 strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)); 1312 sprintf(np->s.inst_name, "sym%d", np->s.unit); 1313 1314 if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) && 1315 !pci_set_dma_mask(pdev, DMA_DAC_MASK)) { 1316 set_dac(np); 1317 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { 1318 printf_warning("%s: No suitable DMA available\n", sym_name(np)); 1319 goto attach_failed; 1320 } 1321 1322 if (sym_hcb_attach(shost, fw, dev->nvram)) 1323 goto attach_failed; 1324 1325 /* 1326 * Install the interrupt handler. 1327 * If we synchonize the C code with SCRIPTS on interrupt, 1328 * we do not want to share the INTR line at all. 1329 */ 1330 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, 1331 shost)) { 1332 printf_err("%s: request irq %u failure\n", 1333 sym_name(np), pdev->irq); 1334 goto attach_failed; 1335 } 1336 do_free_irq = 1; 1337 1338 /* 1339 * After SCSI devices have been opened, we cannot 1340 * reset the bus safely, so we do it here. 1341 */ 1342 spin_lock_irqsave(shost->host_lock, flags); 1343 if (sym_reset_scsi_bus(np, 0)) 1344 goto reset_failed; 1345 1346 /* 1347 * Start the SCRIPTS. 1348 */ 1349 sym_start_up(shost, 1); 1350 1351 /* 1352 * Start the timer daemon 1353 */ 1354 init_timer(&np->s.timer); 1355 np->s.timer.data = (unsigned long) np; 1356 np->s.timer.function = sym53c8xx_timer; 1357 np->s.lasttime=0; 1358 sym_timer (np); 1359 1360 /* 1361 * Fill Linux host instance structure 1362 * and return success. 1363 */ 1364 shost->max_channel = 0; 1365 shost->this_id = np->myaddr; 1366 shost->max_id = np->maxwide ? 16 : 8; 1367 shost->max_lun = SYM_CONF_MAX_LUN; 1368 shost->unique_id = pci_resource_start(pdev, 0); 1369 shost->cmd_per_lun = SYM_CONF_MAX_TAG; 1370 shost->can_queue = (SYM_CONF_MAX_START-2); 1371 shost->sg_tablesize = SYM_CONF_MAX_SG; 1372 shost->max_cmd_len = 16; 1373 BUG_ON(sym2_transport_template == NULL); 1374 shost->transportt = sym2_transport_template; 1375 1376 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */ 1377 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2) 1378 shost->dma_boundary = 0xFFFFFF; 1379 1380 spin_unlock_irqrestore(shost->host_lock, flags); 1381 1382 return shost; 1383 1384 reset_failed: 1385 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, " 1386 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np)); 1387 spin_unlock_irqrestore(shost->host_lock, flags); 1388 attach_failed: 1389 printf_info("sym%d: giving up ...\n", unit); 1390 if (np) 1391 sym_free_resources(np, pdev, do_free_irq); 1392 else 1393 sym_iounmap_device(dev); 1394 if (shost) 1395 scsi_host_put(shost); 1396 1397 return NULL; 1398 } 1399 1400 1401 /* 1402 * Detect and try to read SYMBIOS and TEKRAM NVRAM. 1403 */ 1404 #if SYM_CONF_NVRAM_SUPPORT 1405 static void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1406 { 1407 devp->nvram = nvp; 1408 nvp->type = 0; 1409 1410 sym_read_nvram(devp, nvp); 1411 } 1412 #else 1413 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1414 { 1415 } 1416 #endif /* SYM_CONF_NVRAM_SUPPORT */ 1417 1418 static int sym_check_supported(struct sym_device *device) 1419 { 1420 struct sym_chip *chip; 1421 struct pci_dev *pdev = device->pdev; 1422 unsigned long io_port = pci_resource_start(pdev, 0); 1423 int i; 1424 1425 /* 1426 * If user excluded this chip, do not initialize it. 1427 * I hate this code so much. Must kill it. 1428 */ 1429 if (io_port) { 1430 for (i = 0 ; i < 8 ; i++) { 1431 if (sym_driver_setup.excludes[i] == io_port) 1432 return -ENODEV; 1433 } 1434 } 1435 1436 /* 1437 * Check if the chip is supported. Then copy the chip description 1438 * to our device structure so we can make it match the actual device 1439 * and options. 1440 */ 1441 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1442 if (!chip) { 1443 dev_info(&pdev->dev, "device not supported\n"); 1444 return -ENODEV; 1445 } 1446 memcpy(&device->chip, chip, sizeof(device->chip)); 1447 1448 return 0; 1449 } 1450 1451 /* 1452 * Ignore Symbios chips controlled by various RAID controllers. 1453 * These controllers set value 0x52414944 at RAM end - 16. 1454 */ 1455 static int sym_check_raid(struct sym_device *device) 1456 { 1457 unsigned int ram_size, ram_val; 1458 1459 if (!device->s.ramaddr) 1460 return 0; 1461 1462 if (device->chip.features & FE_RAM8K) 1463 ram_size = 8192; 1464 else 1465 ram_size = 4096; 1466 1467 ram_val = readl(device->s.ramaddr + ram_size - 16); 1468 if (ram_val != 0x52414944) 1469 return 0; 1470 1471 dev_info(&device->pdev->dev, 1472 "not initializing, driven by RAID controller.\n"); 1473 return -ENODEV; 1474 } 1475 1476 static int sym_set_workarounds(struct sym_device *device) 1477 { 1478 struct sym_chip *chip = &device->chip; 1479 struct pci_dev *pdev = device->pdev; 1480 u_short status_reg; 1481 1482 /* 1483 * (ITEM 12 of a DEL about the 896 I haven't yet). 1484 * We must ensure the chip will use WRITE AND INVALIDATE. 1485 * The revision number limit is for now arbitrary. 1486 */ 1487 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) { 1488 chip->features |= (FE_WRIE | FE_CLSE); 1489 } 1490 1491 /* If the chip can do Memory Write Invalidate, enable it */ 1492 if (chip->features & FE_WRIE) { 1493 if (pci_set_mwi(pdev)) 1494 return -ENODEV; 1495 } 1496 1497 /* 1498 * Work around for errant bit in 895A. The 66Mhz 1499 * capable bit is set erroneously. Clear this bit. 1500 * (Item 1 DEL 533) 1501 * 1502 * Make sure Config space and Features agree. 1503 * 1504 * Recall: writes are not normal to status register - 1505 * write a 1 to clear and a 0 to leave unchanged. 1506 * Can only reset bits. 1507 */ 1508 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1509 if (chip->features & FE_66MHZ) { 1510 if (!(status_reg & PCI_STATUS_66MHZ)) 1511 chip->features &= ~FE_66MHZ; 1512 } else { 1513 if (status_reg & PCI_STATUS_66MHZ) { 1514 status_reg = PCI_STATUS_66MHZ; 1515 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1516 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1517 } 1518 } 1519 1520 return 0; 1521 } 1522 1523 /* 1524 * Map HBA registers and on-chip SRAM (if present). 1525 */ 1526 static int sym_iomap_device(struct sym_device *device) 1527 { 1528 struct pci_dev *pdev = device->pdev; 1529 struct pci_bus_region bus_addr; 1530 int i = 2; 1531 1532 pcibios_resource_to_bus(pdev->bus, &bus_addr, &pdev->resource[1]); 1533 device->mmio_base = bus_addr.start; 1534 1535 if (device->chip.features & FE_RAM) { 1536 /* 1537 * If the BAR is 64-bit, resource 2 will be occupied by the 1538 * upper 32 bits 1539 */ 1540 if (!pdev->resource[i].flags) 1541 i++; 1542 pcibios_resource_to_bus(pdev->bus, &bus_addr, 1543 &pdev->resource[i]); 1544 device->ram_base = bus_addr.start; 1545 } 1546 1547 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO 1548 if (device->mmio_base) 1549 device->s.ioaddr = pci_iomap(pdev, 1, 1550 pci_resource_len(pdev, 1)); 1551 #endif 1552 if (!device->s.ioaddr) 1553 device->s.ioaddr = pci_iomap(pdev, 0, 1554 pci_resource_len(pdev, 0)); 1555 if (!device->s.ioaddr) { 1556 dev_err(&pdev->dev, "could not map registers; giving up.\n"); 1557 return -EIO; 1558 } 1559 if (device->ram_base) { 1560 device->s.ramaddr = pci_iomap(pdev, i, 1561 pci_resource_len(pdev, i)); 1562 if (!device->s.ramaddr) { 1563 dev_warn(&pdev->dev, 1564 "could not map SRAM; continuing anyway.\n"); 1565 device->ram_base = 0; 1566 } 1567 } 1568 1569 return 0; 1570 } 1571 1572 /* 1573 * The NCR PQS and PDS cards are constructed as a DEC bridge 1574 * behind which sits a proprietary NCR memory controller and 1575 * either four or two 53c875s as separate devices. We can tell 1576 * if an 875 is part of a PQS/PDS or not since if it is, it will 1577 * be on the same bus as the memory controller. In its usual 1578 * mode of operation, the 875s are slaved to the memory 1579 * controller for all transfers. To operate with the Linux 1580 * driver, the memory controller is disabled and the 875s 1581 * freed to function independently. The only wrinkle is that 1582 * the preset SCSI ID (which may be zero) must be read in from 1583 * a special configuration space register of the 875. 1584 */ 1585 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev) 1586 { 1587 int slot; 1588 u8 tmp; 1589 1590 for (slot = 0; slot < 256; slot++) { 1591 struct pci_dev *memc = pci_get_slot(pdev->bus, slot); 1592 1593 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) { 1594 pci_dev_put(memc); 1595 continue; 1596 } 1597 1598 /* bit 1: allow individual 875 configuration */ 1599 pci_read_config_byte(memc, 0x44, &tmp); 1600 if ((tmp & 0x2) == 0) { 1601 tmp |= 0x2; 1602 pci_write_config_byte(memc, 0x44, tmp); 1603 } 1604 1605 /* bit 2: drive individual 875 interrupts to the bus */ 1606 pci_read_config_byte(memc, 0x45, &tmp); 1607 if ((tmp & 0x4) == 0) { 1608 tmp |= 0x4; 1609 pci_write_config_byte(memc, 0x45, tmp); 1610 } 1611 1612 pci_dev_put(memc); 1613 break; 1614 } 1615 1616 pci_read_config_byte(pdev, 0x84, &tmp); 1617 sym_dev->host_id = tmp; 1618 } 1619 1620 /* 1621 * Called before unloading the module. 1622 * Detach the host. 1623 * We have to free resources and halt the NCR chip. 1624 */ 1625 static int sym_detach(struct Scsi_Host *shost, struct pci_dev *pdev) 1626 { 1627 struct sym_hcb *np = sym_get_hcb(shost); 1628 printk("%s: detaching ...\n", sym_name(np)); 1629 1630 del_timer_sync(&np->s.timer); 1631 1632 /* 1633 * Reset NCR chip. 1634 * We should use sym_soft_reset(), but we don't want to do 1635 * so, since we may not be safe if interrupts occur. 1636 */ 1637 printk("%s: resetting chip\n", sym_name(np)); 1638 OUTB(np, nc_istat, SRST); 1639 INB(np, nc_mbox1); 1640 udelay(10); 1641 OUTB(np, nc_istat, 0); 1642 1643 sym_free_resources(np, pdev, 1); 1644 scsi_host_put(shost); 1645 1646 return 1; 1647 } 1648 1649 /* 1650 * Driver host template. 1651 */ 1652 static struct scsi_host_template sym2_template = { 1653 .module = THIS_MODULE, 1654 .name = "sym53c8xx", 1655 .info = sym53c8xx_info, 1656 .queuecommand = sym53c8xx_queue_command, 1657 .slave_alloc = sym53c8xx_slave_alloc, 1658 .slave_configure = sym53c8xx_slave_configure, 1659 .slave_destroy = sym53c8xx_slave_destroy, 1660 .eh_abort_handler = sym53c8xx_eh_abort_handler, 1661 .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler, 1662 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, 1663 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, 1664 .this_id = 7, 1665 .use_clustering = ENABLE_CLUSTERING, 1666 .max_sectors = 0xFFFF, 1667 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 1668 .show_info = sym_show_info, 1669 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 1670 .write_info = sym_user_command, 1671 #endif 1672 .proc_name = NAME53C8XX, 1673 #endif 1674 }; 1675 1676 static int attach_count; 1677 1678 static int sym2_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1679 { 1680 struct sym_device sym_dev; 1681 struct sym_nvram nvram; 1682 struct Scsi_Host *shost; 1683 int do_iounmap = 0; 1684 int do_disable_device = 1; 1685 1686 memset(&sym_dev, 0, sizeof(sym_dev)); 1687 memset(&nvram, 0, sizeof(nvram)); 1688 sym_dev.pdev = pdev; 1689 sym_dev.host_id = SYM_SETUP_HOST_ID; 1690 1691 if (pci_enable_device(pdev)) 1692 goto leave; 1693 1694 pci_set_master(pdev); 1695 1696 if (pci_request_regions(pdev, NAME53C8XX)) 1697 goto disable; 1698 1699 if (sym_check_supported(&sym_dev)) 1700 goto free; 1701 1702 if (sym_iomap_device(&sym_dev)) 1703 goto free; 1704 do_iounmap = 1; 1705 1706 if (sym_check_raid(&sym_dev)) { 1707 do_disable_device = 0; /* Don't disable the device */ 1708 goto free; 1709 } 1710 1711 if (sym_set_workarounds(&sym_dev)) 1712 goto free; 1713 1714 sym_config_pqs(pdev, &sym_dev); 1715 1716 sym_get_nvram(&sym_dev, &nvram); 1717 1718 do_iounmap = 0; /* Don't sym_iounmap_device() after sym_attach(). */ 1719 shost = sym_attach(&sym2_template, attach_count, &sym_dev); 1720 if (!shost) 1721 goto free; 1722 1723 if (scsi_add_host(shost, &pdev->dev)) 1724 goto detach; 1725 scsi_scan_host(shost); 1726 1727 attach_count++; 1728 1729 return 0; 1730 1731 detach: 1732 sym_detach(pci_get_drvdata(pdev), pdev); 1733 free: 1734 if (do_iounmap) 1735 sym_iounmap_device(&sym_dev); 1736 pci_release_regions(pdev); 1737 disable: 1738 if (do_disable_device) 1739 pci_disable_device(pdev); 1740 leave: 1741 return -ENODEV; 1742 } 1743 1744 static void sym2_remove(struct pci_dev *pdev) 1745 { 1746 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1747 1748 scsi_remove_host(shost); 1749 sym_detach(shost, pdev); 1750 pci_release_regions(pdev); 1751 pci_disable_device(pdev); 1752 1753 attach_count--; 1754 } 1755 1756 /** 1757 * sym2_io_error_detected() - called when PCI error is detected 1758 * @pdev: pointer to PCI device 1759 * @state: current state of the PCI slot 1760 */ 1761 static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev, 1762 enum pci_channel_state state) 1763 { 1764 /* If slot is permanently frozen, turn everything off */ 1765 if (state == pci_channel_io_perm_failure) { 1766 sym2_remove(pdev); 1767 return PCI_ERS_RESULT_DISCONNECT; 1768 } 1769 1770 disable_irq(pdev->irq); 1771 pci_disable_device(pdev); 1772 1773 /* Request that MMIO be enabled, so register dump can be taken. */ 1774 return PCI_ERS_RESULT_CAN_RECOVER; 1775 } 1776 1777 /** 1778 * sym2_io_slot_dump - Enable MMIO and dump debug registers 1779 * @pdev: pointer to PCI device 1780 */ 1781 static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev) 1782 { 1783 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1784 1785 sym_dump_registers(shost); 1786 1787 /* Request a slot reset. */ 1788 return PCI_ERS_RESULT_NEED_RESET; 1789 } 1790 1791 /** 1792 * sym2_reset_workarounds - hardware-specific work-arounds 1793 * 1794 * This routine is similar to sym_set_workarounds(), except 1795 * that, at this point, we already know that the device was 1796 * successfully initialized at least once before, and so most 1797 * of the steps taken there are un-needed here. 1798 */ 1799 static void sym2_reset_workarounds(struct pci_dev *pdev) 1800 { 1801 u_short status_reg; 1802 struct sym_chip *chip; 1803 1804 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1805 1806 /* Work around for errant bit in 895A, in a fashion 1807 * similar to what is done in sym_set_workarounds(). 1808 */ 1809 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1810 if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) { 1811 status_reg = PCI_STATUS_66MHZ; 1812 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1813 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1814 } 1815 } 1816 1817 /** 1818 * sym2_io_slot_reset() - called when the pci bus has been reset. 1819 * @pdev: pointer to PCI device 1820 * 1821 * Restart the card from scratch. 1822 */ 1823 static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev) 1824 { 1825 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1826 struct sym_hcb *np = sym_get_hcb(shost); 1827 1828 printk(KERN_INFO "%s: recovering from a PCI slot reset\n", 1829 sym_name(np)); 1830 1831 if (pci_enable_device(pdev)) { 1832 printk(KERN_ERR "%s: Unable to enable after PCI reset\n", 1833 sym_name(np)); 1834 return PCI_ERS_RESULT_DISCONNECT; 1835 } 1836 1837 pci_set_master(pdev); 1838 enable_irq(pdev->irq); 1839 1840 /* If the chip can do Memory Write Invalidate, enable it */ 1841 if (np->features & FE_WRIE) { 1842 if (pci_set_mwi(pdev)) 1843 return PCI_ERS_RESULT_DISCONNECT; 1844 } 1845 1846 /* Perform work-arounds, analogous to sym_set_workarounds() */ 1847 sym2_reset_workarounds(pdev); 1848 1849 /* Perform host reset only on one instance of the card */ 1850 if (PCI_FUNC(pdev->devfn) == 0) { 1851 if (sym_reset_scsi_bus(np, 0)) { 1852 printk(KERN_ERR "%s: Unable to reset scsi host\n", 1853 sym_name(np)); 1854 return PCI_ERS_RESULT_DISCONNECT; 1855 } 1856 sym_start_up(shost, 1); 1857 } 1858 1859 return PCI_ERS_RESULT_RECOVERED; 1860 } 1861 1862 /** 1863 * sym2_io_resume() - resume normal ops after PCI reset 1864 * @pdev: pointer to PCI device 1865 * 1866 * Called when the error recovery driver tells us that its 1867 * OK to resume normal operation. Use completion to allow 1868 * halted scsi ops to resume. 1869 */ 1870 static void sym2_io_resume(struct pci_dev *pdev) 1871 { 1872 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1873 struct sym_data *sym_data = shost_priv(shost); 1874 1875 spin_lock_irq(shost->host_lock); 1876 if (sym_data->io_reset) 1877 complete_all(sym_data->io_reset); 1878 spin_unlock_irq(shost->host_lock); 1879 } 1880 1881 static void sym2_get_signalling(struct Scsi_Host *shost) 1882 { 1883 struct sym_hcb *np = sym_get_hcb(shost); 1884 enum spi_signal_type type; 1885 1886 switch (np->scsi_mode) { 1887 case SMODE_SE: 1888 type = SPI_SIGNAL_SE; 1889 break; 1890 case SMODE_LVD: 1891 type = SPI_SIGNAL_LVD; 1892 break; 1893 case SMODE_HVD: 1894 type = SPI_SIGNAL_HVD; 1895 break; 1896 default: 1897 type = SPI_SIGNAL_UNKNOWN; 1898 break; 1899 } 1900 spi_signalling(shost) = type; 1901 } 1902 1903 static void sym2_set_offset(struct scsi_target *starget, int offset) 1904 { 1905 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1906 struct sym_hcb *np = sym_get_hcb(shost); 1907 struct sym_tcb *tp = &np->target[starget->id]; 1908 1909 tp->tgoal.offset = offset; 1910 tp->tgoal.check_nego = 1; 1911 } 1912 1913 static void sym2_set_period(struct scsi_target *starget, int period) 1914 { 1915 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1916 struct sym_hcb *np = sym_get_hcb(shost); 1917 struct sym_tcb *tp = &np->target[starget->id]; 1918 1919 /* have to have DT for these transfers, but DT will also 1920 * set width, so check that this is allowed */ 1921 if (period <= np->minsync && spi_width(starget)) 1922 tp->tgoal.dt = 1; 1923 1924 tp->tgoal.period = period; 1925 tp->tgoal.check_nego = 1; 1926 } 1927 1928 static void sym2_set_width(struct scsi_target *starget, int width) 1929 { 1930 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1931 struct sym_hcb *np = sym_get_hcb(shost); 1932 struct sym_tcb *tp = &np->target[starget->id]; 1933 1934 /* It is illegal to have DT set on narrow transfers. If DT is 1935 * clear, we must also clear IU and QAS. */ 1936 if (width == 0) 1937 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 1938 1939 tp->tgoal.width = width; 1940 tp->tgoal.check_nego = 1; 1941 } 1942 1943 static void sym2_set_dt(struct scsi_target *starget, int dt) 1944 { 1945 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1946 struct sym_hcb *np = sym_get_hcb(shost); 1947 struct sym_tcb *tp = &np->target[starget->id]; 1948 1949 /* We must clear QAS and IU if DT is clear */ 1950 if (dt) 1951 tp->tgoal.dt = 1; 1952 else 1953 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 1954 tp->tgoal.check_nego = 1; 1955 } 1956 1957 #if 0 1958 static void sym2_set_iu(struct scsi_target *starget, int iu) 1959 { 1960 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1961 struct sym_hcb *np = sym_get_hcb(shost); 1962 struct sym_tcb *tp = &np->target[starget->id]; 1963 1964 if (iu) 1965 tp->tgoal.iu = tp->tgoal.dt = 1; 1966 else 1967 tp->tgoal.iu = 0; 1968 tp->tgoal.check_nego = 1; 1969 } 1970 1971 static void sym2_set_qas(struct scsi_target *starget, int qas) 1972 { 1973 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1974 struct sym_hcb *np = sym_get_hcb(shost); 1975 struct sym_tcb *tp = &np->target[starget->id]; 1976 1977 if (qas) 1978 tp->tgoal.dt = tp->tgoal.qas = 1; 1979 else 1980 tp->tgoal.qas = 0; 1981 tp->tgoal.check_nego = 1; 1982 } 1983 #endif 1984 1985 static struct spi_function_template sym2_transport_functions = { 1986 .set_offset = sym2_set_offset, 1987 .show_offset = 1, 1988 .set_period = sym2_set_period, 1989 .show_period = 1, 1990 .set_width = sym2_set_width, 1991 .show_width = 1, 1992 .set_dt = sym2_set_dt, 1993 .show_dt = 1, 1994 #if 0 1995 .set_iu = sym2_set_iu, 1996 .show_iu = 1, 1997 .set_qas = sym2_set_qas, 1998 .show_qas = 1, 1999 #endif 2000 .get_signalling = sym2_get_signalling, 2001 }; 2002 2003 static struct pci_device_id sym2_id_table[] = { 2004 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810, 2005 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2006 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820, 2007 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2008 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825, 2009 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2010 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815, 2011 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2012 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP, 2013 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2014 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860, 2015 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2016 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510, 2017 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, 2018 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896, 2019 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2020 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895, 2021 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2022 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885, 2023 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2024 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875, 2025 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2026 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510, 2027 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */ 2028 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A, 2029 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2030 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A, 2031 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2032 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33, 2033 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2034 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66, 2035 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2036 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J, 2037 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2038 { 0, } 2039 }; 2040 2041 MODULE_DEVICE_TABLE(pci, sym2_id_table); 2042 2043 static const struct pci_error_handlers sym2_err_handler = { 2044 .error_detected = sym2_io_error_detected, 2045 .mmio_enabled = sym2_io_slot_dump, 2046 .slot_reset = sym2_io_slot_reset, 2047 .resume = sym2_io_resume, 2048 }; 2049 2050 static struct pci_driver sym2_driver = { 2051 .name = NAME53C8XX, 2052 .id_table = sym2_id_table, 2053 .probe = sym2_probe, 2054 .remove = sym2_remove, 2055 .err_handler = &sym2_err_handler, 2056 }; 2057 2058 static int __init sym2_init(void) 2059 { 2060 int error; 2061 2062 sym2_setup_params(); 2063 sym2_transport_template = spi_attach_transport(&sym2_transport_functions); 2064 if (!sym2_transport_template) 2065 return -ENODEV; 2066 2067 error = pci_register_driver(&sym2_driver); 2068 if (error) 2069 spi_release_transport(sym2_transport_template); 2070 return error; 2071 } 2072 2073 static void __exit sym2_exit(void) 2074 { 2075 pci_unregister_driver(&sym2_driver); 2076 spi_release_transport(sym2_transport_template); 2077 } 2078 2079 module_init(sym2_init); 2080 module_exit(sym2_exit); 2081