1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family 4 * of PCI-SCSI IO processors. 5 * 6 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr> 7 * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx> 8 * 9 * This driver is derived from the Linux sym53c8xx driver. 10 * Copyright (C) 1998-2000 Gerard Roudier 11 * 12 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been 13 * a port of the FreeBSD ncr driver to Linux-1.2.13. 14 * 15 * The original ncr driver has been written for 386bsd and FreeBSD by 16 * Wolfgang Stanglmeier <wolf@cologne.de> 17 * Stefan Esser <se@mi.Uni-Koeln.de> 18 * Copyright (C) 1994 Wolfgang Stanglmeier 19 * 20 * Other major contributions: 21 * 22 * NVRAM detection and reading. 23 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> 24 * 25 *----------------------------------------------------------------------------- 26 */ 27 #include <linux/ctype.h> 28 #include <linux/init.h> 29 #include <linux/module.h> 30 #include <linux/moduleparam.h> 31 #include <linux/spinlock.h> 32 #include <scsi/scsi.h> 33 #include <scsi/scsi_tcq.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_transport.h> 36 37 #include "sym_glue.h" 38 #include "sym_nvram.h" 39 40 #define NAME53C "sym53c" 41 #define NAME53C8XX "sym53c8xx" 42 43 struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP; 44 unsigned int sym_debug_flags = 0; 45 46 static char *excl_string; 47 static char *safe_string; 48 module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0); 49 module_param_named(burst, sym_driver_setup.burst_order, byte, 0); 50 module_param_named(led, sym_driver_setup.scsi_led, byte, 0); 51 module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0); 52 module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0); 53 module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0); 54 module_param_named(hostid, sym_driver_setup.host_id, byte, 0); 55 module_param_named(verb, sym_driver_setup.verbose, byte, 0); 56 module_param_named(debug, sym_debug_flags, uint, 0); 57 module_param_named(settle, sym_driver_setup.settle_delay, byte, 0); 58 module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0); 59 module_param_named(excl, excl_string, charp, 0); 60 module_param_named(safe, safe_string, charp, 0); 61 62 MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default"); 63 MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers"); 64 MODULE_PARM_DESC(led, "Set to 1 to enable LED support"); 65 MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3"); 66 MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole"); 67 MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error"); 68 MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters"); 69 MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive"); 70 MODULE_PARM_DESC(debug, "Set bits to enable debugging"); 71 MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3"); 72 MODULE_PARM_DESC(nvram, "Option currently not used"); 73 MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached"); 74 MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\""); 75 76 MODULE_LICENSE("GPL"); 77 MODULE_VERSION(SYM_VERSION); 78 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>"); 79 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters"); 80 81 static void sym2_setup_params(void) 82 { 83 char *p = excl_string; 84 int xi = 0; 85 86 while (p && (xi < 8)) { 87 char *next_p; 88 int val = (int) simple_strtoul(p, &next_p, 0); 89 sym_driver_setup.excludes[xi++] = val; 90 p = next_p; 91 } 92 93 if (safe_string) { 94 if (*safe_string == 'y') { 95 sym_driver_setup.max_tag = 0; 96 sym_driver_setup.burst_order = 0; 97 sym_driver_setup.scsi_led = 0; 98 sym_driver_setup.scsi_diff = 1; 99 sym_driver_setup.irq_mode = 0; 100 sym_driver_setup.scsi_bus_check = 2; 101 sym_driver_setup.host_id = 7; 102 sym_driver_setup.verbose = 2; 103 sym_driver_setup.settle_delay = 10; 104 sym_driver_setup.use_nvram = 1; 105 } else if (*safe_string != 'n') { 106 printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s" 107 " passed to safe option", safe_string); 108 } 109 } 110 } 111 112 static struct scsi_transport_template *sym2_transport_template = NULL; 113 114 /* 115 * Driver private area in the SCSI command structure. 116 */ 117 struct sym_ucmd { /* Override the SCSI pointer structure */ 118 struct completion *eh_done; /* SCSI error handling */ 119 }; 120 121 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)scsi_cmd_priv(cmd)) 122 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host) 123 124 /* 125 * Complete a pending CAM CCB. 126 */ 127 void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd) 128 { 129 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 130 131 if (ucmd->eh_done) 132 complete(ucmd->eh_done); 133 134 scsi_dma_unmap(cmd); 135 scsi_done(cmd); 136 } 137 138 /* 139 * Tell the SCSI layer about a BUS RESET. 140 */ 141 void sym_xpt_async_bus_reset(struct sym_hcb *np) 142 { 143 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np)); 144 np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ; 145 np->s.settle_time_valid = 1; 146 if (sym_verbose >= 2) 147 printf_info("%s: command processing suspended for %d seconds\n", 148 sym_name(np), sym_driver_setup.settle_delay); 149 } 150 151 /* 152 * Choose the more appropriate CAM status if 153 * the IO encountered an extended error. 154 */ 155 static int sym_xerr_cam_status(int cam_status, int x_status) 156 { 157 if (x_status) { 158 if (x_status & XE_PARITY_ERR) 159 cam_status = DID_PARITY; 160 else 161 cam_status = DID_ERROR; 162 } 163 return cam_status; 164 } 165 166 /* 167 * Build CAM result for a failed or auto-sensed IO. 168 */ 169 void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) 170 { 171 struct scsi_cmnd *cmd = cp->cmd; 172 u_int cam_status, scsi_status; 173 174 cam_status = DID_OK; 175 scsi_status = cp->ssss_status; 176 177 if (cp->host_flags & HF_SENSE) { 178 scsi_status = cp->sv_scsi_status; 179 resid = cp->sv_resid; 180 if (sym_verbose && cp->sv_xerr_status) 181 sym_print_xerr(cmd, cp->sv_xerr_status); 182 if (cp->host_status == HS_COMPLETE && 183 cp->ssss_status == S_GOOD && 184 cp->xerr_status == 0) { 185 cam_status = sym_xerr_cam_status(DID_OK, 186 cp->sv_xerr_status); 187 /* 188 * Bounce back the sense data to user. 189 */ 190 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 191 memcpy(cmd->sense_buffer, cp->sns_bbuf, 192 min(SCSI_SENSE_BUFFERSIZE, SYM_SNS_BBUF_LEN)); 193 #if 0 194 /* 195 * If the device reports a UNIT ATTENTION condition 196 * due to a RESET condition, we should consider all 197 * disconnect CCBs for this unit as aborted. 198 */ 199 if (1) { 200 u_char *p; 201 p = (u_char *) cmd->sense_data; 202 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29) 203 sym_clear_tasks(np, DID_ABORT, 204 cp->target,cp->lun, -1); 205 } 206 #endif 207 } else { 208 /* 209 * Error return from our internal request sense. This 210 * is bad: we must clear the contingent allegiance 211 * condition otherwise the device will always return 212 * BUSY. Use a big stick. 213 */ 214 sym_reset_scsi_target(np, cmd->device->id); 215 cam_status = DID_ERROR; 216 } 217 } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */ 218 cam_status = DID_OK; 219 else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */ 220 cam_status = DID_NO_CONNECT; 221 else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/ 222 cam_status = DID_ERROR; 223 else { /* Extended error */ 224 if (sym_verbose) { 225 sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n", 226 cp->host_status, cp->ssss_status, 227 cp->xerr_status); 228 } 229 /* 230 * Set the most appropriate value for CAM status. 231 */ 232 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status); 233 } 234 scsi_set_resid(cmd, resid); 235 cmd->result = (cam_status << 16) | scsi_status; 236 } 237 238 static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd) 239 { 240 int segment; 241 int use_sg; 242 243 cp->data_len = 0; 244 245 use_sg = scsi_dma_map(cmd); 246 if (use_sg > 0) { 247 struct scatterlist *sg; 248 struct sym_tcb *tp = &np->target[cp->target]; 249 struct sym_tblmove *data; 250 251 if (use_sg > SYM_CONF_MAX_SG) { 252 scsi_dma_unmap(cmd); 253 return -1; 254 } 255 256 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg]; 257 258 scsi_for_each_sg(cmd, sg, use_sg, segment) { 259 dma_addr_t baddr = sg_dma_address(sg); 260 unsigned int len = sg_dma_len(sg); 261 262 if ((len & 1) && (tp->head.wval & EWS)) { 263 len++; 264 cp->odd_byte_adjustment++; 265 } 266 267 sym_build_sge(np, &data[segment], baddr, len); 268 cp->data_len += len; 269 } 270 } else { 271 segment = -2; 272 } 273 274 return segment; 275 } 276 277 /* 278 * Queue a SCSI command. 279 */ 280 static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd) 281 { 282 struct scsi_device *sdev = cmd->device; 283 struct sym_tcb *tp; 284 struct sym_lcb *lp; 285 struct sym_ccb *cp; 286 int order; 287 288 /* 289 * Retrieve the target descriptor. 290 */ 291 tp = &np->target[sdev->id]; 292 293 /* 294 * Select tagged/untagged. 295 */ 296 lp = sym_lp(tp, sdev->lun); 297 order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0; 298 299 /* 300 * Queue the SCSI IO. 301 */ 302 cp = sym_get_ccb(np, cmd, order); 303 if (!cp) 304 return 1; /* Means resource shortage */ 305 sym_queue_scsiio(np, cmd, cp); 306 return 0; 307 } 308 309 /* 310 * Setup buffers and pointers that address the CDB. 311 */ 312 static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) 313 { 314 memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len); 315 316 cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]); 317 cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len); 318 319 return 0; 320 } 321 322 /* 323 * Setup pointers that address the data and start the I/O. 324 */ 325 int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) 326 { 327 u32 lastp, goalp; 328 int dir; 329 330 /* 331 * Build the CDB. 332 */ 333 if (sym_setup_cdb(np, cmd, cp)) 334 goto out_abort; 335 336 /* 337 * No direction means no data. 338 */ 339 dir = cmd->sc_data_direction; 340 if (dir != DMA_NONE) { 341 cp->segments = sym_scatter(np, cp, cmd); 342 if (cp->segments < 0) { 343 sym_set_cam_status(cmd, DID_ERROR); 344 goto out_abort; 345 } 346 347 /* 348 * No segments means no data. 349 */ 350 if (!cp->segments) 351 dir = DMA_NONE; 352 } else { 353 cp->data_len = 0; 354 cp->segments = 0; 355 } 356 357 /* 358 * Set the data pointer. 359 */ 360 switch (dir) { 361 case DMA_BIDIRECTIONAL: 362 scmd_printk(KERN_INFO, cmd, "got DMA_BIDIRECTIONAL command"); 363 sym_set_cam_status(cmd, DID_ERROR); 364 goto out_abort; 365 case DMA_TO_DEVICE: 366 goalp = SCRIPTA_BA(np, data_out2) + 8; 367 lastp = goalp - 8 - (cp->segments * (2*4)); 368 break; 369 case DMA_FROM_DEVICE: 370 cp->host_flags |= HF_DATA_IN; 371 goalp = SCRIPTA_BA(np, data_in2) + 8; 372 lastp = goalp - 8 - (cp->segments * (2*4)); 373 break; 374 case DMA_NONE: 375 default: 376 lastp = goalp = SCRIPTB_BA(np, no_data); 377 break; 378 } 379 380 /* 381 * Set all pointers values needed by SCRIPTS. 382 */ 383 cp->phys.head.lastp = cpu_to_scr(lastp); 384 cp->phys.head.savep = cpu_to_scr(lastp); 385 cp->startp = cp->phys.head.savep; 386 cp->goalp = cpu_to_scr(goalp); 387 388 /* 389 * When `#ifed 1', the code below makes the driver 390 * panic on the first attempt to write to a SCSI device. 391 * It is the first test we want to do after a driver 392 * change that does not seem obviously safe. :) 393 */ 394 #if 0 395 switch (cp->cdb_buf[0]) { 396 case 0x0A: case 0x2A: case 0xAA: 397 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n"); 398 break; 399 default: 400 break; 401 } 402 #endif 403 404 /* 405 * activate this job. 406 */ 407 sym_put_start_queue(np, cp); 408 return 0; 409 410 out_abort: 411 sym_free_ccb(np, cp); 412 sym_xpt_done(np, cmd); 413 return 0; 414 } 415 416 417 /* 418 * timer daemon. 419 * 420 * Misused to keep the driver running when 421 * interrupts are not configured correctly. 422 */ 423 static void sym_timer(struct sym_hcb *np) 424 { 425 unsigned long thistime = jiffies; 426 427 /* 428 * Restart the timer. 429 */ 430 np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL; 431 add_timer(&np->s.timer); 432 433 /* 434 * If we are resetting the ncr, wait for settle_time before 435 * clearing it. Then command processing will be resumed. 436 */ 437 if (np->s.settle_time_valid) { 438 if (time_before_eq(np->s.settle_time, thistime)) { 439 if (sym_verbose >= 2 ) 440 printk("%s: command processing resumed\n", 441 sym_name(np)); 442 np->s.settle_time_valid = 0; 443 } 444 return; 445 } 446 447 /* 448 * Nothing to do for now, but that may come. 449 */ 450 if (np->s.lasttime + 4*HZ < thistime) { 451 np->s.lasttime = thistime; 452 } 453 454 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS 455 /* 456 * Some way-broken PCI bridges may lead to 457 * completions being lost when the clearing 458 * of the INTFLY flag by the CPU occurs 459 * concurrently with the chip raising this flag. 460 * If this ever happen, lost completions will 461 * be reaped here. 462 */ 463 sym_wakeup_done(np); 464 #endif 465 } 466 467 468 /* 469 * PCI BUS error handler. 470 */ 471 void sym_log_bus_error(struct Scsi_Host *shost) 472 { 473 struct sym_data *sym_data = shost_priv(shost); 474 struct pci_dev *pdev = sym_data->pdev; 475 unsigned short pci_sts; 476 pci_read_config_word(pdev, PCI_STATUS, &pci_sts); 477 if (pci_sts & 0xf900) { 478 pci_write_config_word(pdev, PCI_STATUS, pci_sts); 479 shost_printk(KERN_WARNING, shost, 480 "PCI bus error: status = 0x%04x\n", pci_sts & 0xf900); 481 } 482 } 483 484 /* 485 * queuecommand method. Entered with the host adapter lock held and 486 * interrupts disabled. 487 */ 488 static int sym53c8xx_queue_command_lck(struct scsi_cmnd *cmd) 489 { 490 struct sym_hcb *np = SYM_SOFTC_PTR(cmd); 491 struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd); 492 int sts = 0; 493 494 memset(ucp, 0, sizeof(*ucp)); 495 496 /* 497 * Shorten our settle_time if needed for 498 * this command not to time out. 499 */ 500 if (np->s.settle_time_valid && scsi_cmd_to_rq(cmd)->timeout) { 501 unsigned long tlimit = jiffies + scsi_cmd_to_rq(cmd)->timeout; 502 tlimit -= SYM_CONF_TIMER_INTERVAL*2; 503 if (time_after(np->s.settle_time, tlimit)) { 504 np->s.settle_time = tlimit; 505 } 506 } 507 508 if (np->s.settle_time_valid) 509 return SCSI_MLQUEUE_HOST_BUSY; 510 511 sts = sym_queue_command(np, cmd); 512 if (sts) 513 return SCSI_MLQUEUE_HOST_BUSY; 514 return 0; 515 } 516 517 static DEF_SCSI_QCMD(sym53c8xx_queue_command) 518 519 /* 520 * Linux entry point of the interrupt handler. 521 */ 522 static irqreturn_t sym53c8xx_intr(int irq, void *dev_id) 523 { 524 struct Scsi_Host *shost = dev_id; 525 struct sym_data *sym_data = shost_priv(shost); 526 irqreturn_t result; 527 528 /* Avoid spinloop trying to handle interrupts on frozen device */ 529 if (pci_channel_offline(sym_data->pdev)) 530 return IRQ_NONE; 531 532 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("["); 533 534 spin_lock(shost->host_lock); 535 result = sym_interrupt(shost); 536 spin_unlock(shost->host_lock); 537 538 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n"); 539 540 return result; 541 } 542 543 /* 544 * Linux entry point of the timer handler 545 */ 546 static void sym53c8xx_timer(struct timer_list *t) 547 { 548 struct sym_hcb *np = from_timer(np, t, s.timer); 549 unsigned long flags; 550 551 spin_lock_irqsave(np->s.host->host_lock, flags); 552 sym_timer(np); 553 spin_unlock_irqrestore(np->s.host->host_lock, flags); 554 } 555 556 557 /* 558 * What the eh thread wants us to perform. 559 */ 560 #define SYM_EH_ABORT 0 561 #define SYM_EH_DEVICE_RESET 1 562 563 /* 564 * Generic method for our eh processing. 565 * The 'op' argument tells what we have to do. 566 */ 567 /* 568 * Error handlers called from the eh thread (one thread per HBA). 569 */ 570 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd) 571 { 572 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 573 struct Scsi_Host *shost = cmd->device->host; 574 struct sym_data *sym_data = shost_priv(shost); 575 struct pci_dev *pdev = sym_data->pdev; 576 struct sym_hcb *np = sym_data->ncb; 577 SYM_QUEHEAD *qp; 578 int cmd_queued = 0; 579 int sts = -1; 580 struct completion eh_done; 581 582 scmd_printk(KERN_WARNING, cmd, "ABORT operation started\n"); 583 584 /* 585 * Escalate to host reset if the PCI bus went down 586 */ 587 if (pci_channel_offline(pdev)) 588 return SCSI_FAILED; 589 590 spin_lock_irq(shost->host_lock); 591 /* This one is queued in some place -> to wait for completion */ 592 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { 593 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); 594 if (cp->cmd == cmd) { 595 cmd_queued = 1; 596 break; 597 } 598 } 599 600 sts = sym_abort_scsiio(np, cmd, 1); 601 /* On error, restore everything and cross fingers :) */ 602 if (sts) 603 cmd_queued = 0; 604 605 if (cmd_queued) { 606 init_completion(&eh_done); 607 ucmd->eh_done = &eh_done; 608 spin_unlock_irq(shost->host_lock); 609 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) { 610 ucmd->eh_done = NULL; 611 sts = -2; 612 } 613 } else { 614 spin_unlock_irq(shost->host_lock); 615 } 616 617 dev_warn(&cmd->device->sdev_gendev, "ABORT operation %s.\n", 618 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); 619 return sts ? SCSI_FAILED : SCSI_SUCCESS; 620 } 621 622 static int sym53c8xx_eh_target_reset_handler(struct scsi_cmnd *cmd) 623 { 624 struct scsi_target *starget = scsi_target(cmd->device); 625 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 626 struct sym_data *sym_data = shost_priv(shost); 627 struct pci_dev *pdev = sym_data->pdev; 628 struct sym_hcb *np = sym_data->ncb; 629 SYM_QUEHEAD *qp; 630 int sts; 631 struct completion eh_done; 632 633 starget_printk(KERN_WARNING, starget, 634 "TARGET RESET operation started\n"); 635 636 /* 637 * Escalate to host reset if the PCI bus went down 638 */ 639 if (pci_channel_offline(pdev)) 640 return SCSI_FAILED; 641 642 spin_lock_irq(shost->host_lock); 643 sts = sym_reset_scsi_target(np, starget->id); 644 if (!sts) { 645 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { 646 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, 647 link_ccbq); 648 struct scsi_cmnd *cmd = cp->cmd; 649 struct sym_ucmd *ucmd; 650 651 if (!cmd || cmd->device->channel != starget->channel || 652 cmd->device->id != starget->id) 653 continue; 654 655 ucmd = SYM_UCMD_PTR(cmd); 656 init_completion(&eh_done); 657 ucmd->eh_done = &eh_done; 658 spin_unlock_irq(shost->host_lock); 659 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) { 660 ucmd->eh_done = NULL; 661 sts = -2; 662 } 663 spin_lock_irq(shost->host_lock); 664 } 665 } 666 spin_unlock_irq(shost->host_lock); 667 668 starget_printk(KERN_WARNING, starget, "TARGET RESET operation %s.\n", 669 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); 670 return SCSI_SUCCESS; 671 } 672 673 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd) 674 { 675 struct Scsi_Host *shost = cmd->device->host; 676 struct sym_data *sym_data = shost_priv(shost); 677 struct pci_dev *pdev = sym_data->pdev; 678 struct sym_hcb *np = sym_data->ncb; 679 680 scmd_printk(KERN_WARNING, cmd, "BUS RESET operation started\n"); 681 682 /* 683 * Escalate to host reset if the PCI bus went down 684 */ 685 if (pci_channel_offline(pdev)) 686 return SCSI_FAILED; 687 688 spin_lock_irq(shost->host_lock); 689 sym_reset_scsi_bus(np, 1); 690 spin_unlock_irq(shost->host_lock); 691 692 dev_warn(&cmd->device->sdev_gendev, "BUS RESET operation complete.\n"); 693 return SCSI_SUCCESS; 694 } 695 696 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd) 697 { 698 struct Scsi_Host *shost = cmd->device->host; 699 struct sym_data *sym_data = shost_priv(shost); 700 struct pci_dev *pdev = sym_data->pdev; 701 struct sym_hcb *np = sym_data->ncb; 702 struct completion eh_done; 703 int finished_reset = 1; 704 705 shost_printk(KERN_WARNING, shost, "HOST RESET operation started\n"); 706 707 /* We may be in an error condition because the PCI bus 708 * went down. In this case, we need to wait until the 709 * PCI bus is reset, the card is reset, and only then 710 * proceed with the scsi error recovery. There's no 711 * point in hurrying; take a leisurely wait. 712 */ 713 #define WAIT_FOR_PCI_RECOVERY 35 714 if (pci_channel_offline(pdev)) { 715 init_completion(&eh_done); 716 spin_lock_irq(shost->host_lock); 717 /* Make sure we didn't race */ 718 if (pci_channel_offline(pdev)) { 719 BUG_ON(sym_data->io_reset); 720 sym_data->io_reset = &eh_done; 721 finished_reset = 0; 722 } 723 spin_unlock_irq(shost->host_lock); 724 if (!finished_reset) 725 finished_reset = wait_for_completion_timeout 726 (sym_data->io_reset, 727 WAIT_FOR_PCI_RECOVERY*HZ); 728 spin_lock_irq(shost->host_lock); 729 sym_data->io_reset = NULL; 730 spin_unlock_irq(shost->host_lock); 731 } 732 733 if (finished_reset) { 734 sym_reset_scsi_bus(np, 0); 735 sym_start_up(shost, 1); 736 } 737 738 shost_printk(KERN_WARNING, shost, "HOST RESET operation %s.\n", 739 finished_reset==1 ? "complete" : "failed"); 740 return finished_reset ? SCSI_SUCCESS : SCSI_FAILED; 741 } 742 743 /* 744 * Tune device queuing depth, according to various limits. 745 */ 746 static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags) 747 { 748 struct sym_lcb *lp = sym_lp(tp, lun); 749 u_short oldtags; 750 751 if (!lp) 752 return; 753 754 oldtags = lp->s.reqtags; 755 756 if (reqtags > lp->s.scdev_depth) 757 reqtags = lp->s.scdev_depth; 758 759 lp->s.reqtags = reqtags; 760 761 if (reqtags != oldtags) { 762 dev_info(&tp->starget->dev, 763 "tagged command queuing %s, command queue depth %d.\n", 764 lp->s.reqtags ? "enabled" : "disabled", reqtags); 765 } 766 } 767 768 static int sym53c8xx_slave_alloc(struct scsi_device *sdev) 769 { 770 struct sym_hcb *np = sym_get_hcb(sdev->host); 771 struct sym_tcb *tp = &np->target[sdev->id]; 772 struct sym_lcb *lp; 773 unsigned long flags; 774 int error; 775 776 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN) 777 return -ENXIO; 778 779 spin_lock_irqsave(np->s.host->host_lock, flags); 780 781 /* 782 * Fail the device init if the device is flagged NOSCAN at BOOT in 783 * the NVRAM. This may speed up boot and maintain coherency with 784 * BIOS device numbering. Clearing the flag allows the user to 785 * rescan skipped devices later. We also return an error for 786 * devices not flagged for SCAN LUNS in the NVRAM since some single 787 * lun devices behave badly when asked for a non zero LUN. 788 */ 789 790 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) { 791 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED; 792 starget_printk(KERN_INFO, sdev->sdev_target, 793 "Scan at boot disabled in NVRAM\n"); 794 error = -ENXIO; 795 goto out; 796 } 797 798 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) { 799 if (sdev->lun != 0) { 800 error = -ENXIO; 801 goto out; 802 } 803 starget_printk(KERN_INFO, sdev->sdev_target, 804 "Multiple LUNs disabled in NVRAM\n"); 805 } 806 807 lp = sym_alloc_lcb(np, sdev->id, sdev->lun); 808 if (!lp) { 809 error = -ENOMEM; 810 goto out; 811 } 812 if (tp->nlcb == 1) 813 tp->starget = sdev->sdev_target; 814 815 spi_min_period(tp->starget) = tp->usr_period; 816 spi_max_width(tp->starget) = tp->usr_width; 817 818 error = 0; 819 out: 820 spin_unlock_irqrestore(np->s.host->host_lock, flags); 821 822 return error; 823 } 824 825 /* 826 * Linux entry point for device queue sizing. 827 */ 828 static int sym53c8xx_slave_configure(struct scsi_device *sdev) 829 { 830 struct sym_hcb *np = sym_get_hcb(sdev->host); 831 struct sym_tcb *tp = &np->target[sdev->id]; 832 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 833 int reqtags, depth_to_use; 834 835 /* 836 * Get user flags. 837 */ 838 lp->curr_flags = lp->user_flags; 839 840 /* 841 * Select queue depth from driver setup. 842 * Do not use more than configured by user. 843 * Use at least 1. 844 * Do not use more than our maximum. 845 */ 846 reqtags = sym_driver_setup.max_tag; 847 if (reqtags > tp->usrtags) 848 reqtags = tp->usrtags; 849 if (!sdev->tagged_supported) 850 reqtags = 0; 851 if (reqtags > SYM_CONF_MAX_TAG) 852 reqtags = SYM_CONF_MAX_TAG; 853 depth_to_use = reqtags ? reqtags : 1; 854 scsi_change_queue_depth(sdev, depth_to_use); 855 lp->s.scdev_depth = depth_to_use; 856 sym_tune_dev_queuing(tp, sdev->lun, reqtags); 857 858 if (!spi_initial_dv(sdev->sdev_target)) 859 spi_dv_device(sdev); 860 861 return 0; 862 } 863 864 static void sym53c8xx_slave_destroy(struct scsi_device *sdev) 865 { 866 struct sym_hcb *np = sym_get_hcb(sdev->host); 867 struct sym_tcb *tp = &np->target[sdev->id]; 868 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 869 unsigned long flags; 870 871 /* if slave_alloc returned before allocating a sym_lcb, return */ 872 if (!lp) 873 return; 874 875 spin_lock_irqsave(np->s.host->host_lock, flags); 876 877 if (lp->busy_itlq || lp->busy_itl) { 878 /* 879 * This really shouldn't happen, but we can't return an error 880 * so let's try to stop all on-going I/O. 881 */ 882 starget_printk(KERN_WARNING, tp->starget, 883 "Removing busy LCB (%d)\n", (u8)sdev->lun); 884 sym_reset_scsi_bus(np, 1); 885 } 886 887 if (sym_free_lcb(np, sdev->id, sdev->lun) == 0) { 888 /* 889 * It was the last unit for this target. 890 */ 891 tp->head.sval = 0; 892 tp->head.wval = np->rv_scntl3; 893 tp->head.uval = 0; 894 tp->tgoal.check_nego = 1; 895 tp->starget = NULL; 896 } 897 898 spin_unlock_irqrestore(np->s.host->host_lock, flags); 899 } 900 901 /* 902 * Linux entry point for info() function 903 */ 904 static const char *sym53c8xx_info (struct Scsi_Host *host) 905 { 906 return SYM_DRIVER_NAME; 907 } 908 909 910 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 911 /* 912 * Proc file system stuff 913 * 914 * A read operation returns adapter information. 915 * A write operation is a control command. 916 * The string is parsed in the driver code and the command is passed 917 * to the sym_usercmd() function. 918 */ 919 920 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 921 922 struct sym_usrcmd { 923 u_long target; 924 u_long lun; 925 u_long data; 926 u_long cmd; 927 }; 928 929 #define UC_SETSYNC 10 930 #define UC_SETTAGS 11 931 #define UC_SETDEBUG 12 932 #define UC_SETWIDE 14 933 #define UC_SETFLAG 15 934 #define UC_SETVERBOSE 17 935 #define UC_RESETDEV 18 936 #define UC_CLEARDEV 19 937 938 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc) 939 { 940 struct sym_tcb *tp; 941 int t, l; 942 943 switch (uc->cmd) { 944 case 0: return; 945 946 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 947 case UC_SETDEBUG: 948 sym_debug_flags = uc->data; 949 break; 950 #endif 951 case UC_SETVERBOSE: 952 np->verbose = uc->data; 953 break; 954 default: 955 /* 956 * We assume that other commands apply to targets. 957 * This should always be the case and avoid the below 958 * 4 lines to be repeated 6 times. 959 */ 960 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) { 961 if (!((uc->target >> t) & 1)) 962 continue; 963 tp = &np->target[t]; 964 if (!tp->nlcb) 965 continue; 966 967 switch (uc->cmd) { 968 969 case UC_SETSYNC: 970 if (!uc->data || uc->data >= 255) { 971 tp->tgoal.iu = tp->tgoal.dt = 972 tp->tgoal.qas = 0; 973 tp->tgoal.offset = 0; 974 } else if (uc->data <= 9 && np->minsync_dt) { 975 if (uc->data < np->minsync_dt) 976 uc->data = np->minsync_dt; 977 tp->tgoal.iu = tp->tgoal.dt = 978 tp->tgoal.qas = 1; 979 tp->tgoal.width = 1; 980 tp->tgoal.period = uc->data; 981 tp->tgoal.offset = np->maxoffs_dt; 982 } else { 983 if (uc->data < np->minsync) 984 uc->data = np->minsync; 985 tp->tgoal.iu = tp->tgoal.dt = 986 tp->tgoal.qas = 0; 987 tp->tgoal.period = uc->data; 988 tp->tgoal.offset = np->maxoffs; 989 } 990 tp->tgoal.check_nego = 1; 991 break; 992 case UC_SETWIDE: 993 tp->tgoal.width = uc->data ? 1 : 0; 994 tp->tgoal.check_nego = 1; 995 break; 996 case UC_SETTAGS: 997 for (l = 0; l < SYM_CONF_MAX_LUN; l++) 998 sym_tune_dev_queuing(tp, l, uc->data); 999 break; 1000 case UC_RESETDEV: 1001 tp->to_reset = 1; 1002 np->istat_sem = SEM; 1003 OUTB(np, nc_istat, SIGP|SEM); 1004 break; 1005 case UC_CLEARDEV: 1006 for (l = 0; l < SYM_CONF_MAX_LUN; l++) { 1007 struct sym_lcb *lp = sym_lp(tp, l); 1008 if (lp) lp->to_clear = 1; 1009 } 1010 np->istat_sem = SEM; 1011 OUTB(np, nc_istat, SIGP|SEM); 1012 break; 1013 case UC_SETFLAG: 1014 tp->usrflags = uc->data; 1015 break; 1016 } 1017 } 1018 break; 1019 } 1020 } 1021 1022 static int sym_skip_spaces(char *ptr, int len) 1023 { 1024 int cnt, c; 1025 1026 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--); 1027 1028 return (len - cnt); 1029 } 1030 1031 static int get_int_arg(char *ptr, int len, u_long *pv) 1032 { 1033 char *end; 1034 1035 *pv = simple_strtoul(ptr, &end, 10); 1036 return (end - ptr); 1037 } 1038 1039 static int is_keyword(char *ptr, int len, char *verb) 1040 { 1041 int verb_len = strlen(verb); 1042 1043 if (len >= verb_len && !memcmp(verb, ptr, verb_len)) 1044 return verb_len; 1045 else 1046 return 0; 1047 } 1048 1049 #define SKIP_SPACES(ptr, len) \ 1050 if ((arg_len = sym_skip_spaces(ptr, len)) < 1) \ 1051 return -EINVAL; \ 1052 ptr += arg_len; len -= arg_len; 1053 1054 #define GET_INT_ARG(ptr, len, v) \ 1055 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \ 1056 return -EINVAL; \ 1057 ptr += arg_len; len -= arg_len; 1058 1059 1060 /* 1061 * Parse a control command 1062 */ 1063 1064 static int sym_user_command(struct Scsi_Host *shost, char *buffer, int length) 1065 { 1066 struct sym_hcb *np = sym_get_hcb(shost); 1067 char *ptr = buffer; 1068 int len = length; 1069 struct sym_usrcmd cmd, *uc = &cmd; 1070 int arg_len; 1071 u_long target; 1072 1073 memset(uc, 0, sizeof(*uc)); 1074 1075 if (len > 0 && ptr[len-1] == '\n') 1076 --len; 1077 1078 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0) 1079 uc->cmd = UC_SETSYNC; 1080 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0) 1081 uc->cmd = UC_SETTAGS; 1082 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0) 1083 uc->cmd = UC_SETVERBOSE; 1084 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0) 1085 uc->cmd = UC_SETWIDE; 1086 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1087 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0) 1088 uc->cmd = UC_SETDEBUG; 1089 #endif 1090 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0) 1091 uc->cmd = UC_SETFLAG; 1092 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0) 1093 uc->cmd = UC_RESETDEV; 1094 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0) 1095 uc->cmd = UC_CLEARDEV; 1096 else 1097 arg_len = 0; 1098 1099 #ifdef DEBUG_PROC_INFO 1100 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd); 1101 #endif 1102 1103 if (!arg_len) 1104 return -EINVAL; 1105 ptr += arg_len; len -= arg_len; 1106 1107 switch(uc->cmd) { 1108 case UC_SETSYNC: 1109 case UC_SETTAGS: 1110 case UC_SETWIDE: 1111 case UC_SETFLAG: 1112 case UC_RESETDEV: 1113 case UC_CLEARDEV: 1114 SKIP_SPACES(ptr, len); 1115 if ((arg_len = is_keyword(ptr, len, "all")) != 0) { 1116 ptr += arg_len; len -= arg_len; 1117 uc->target = ~0; 1118 } else { 1119 GET_INT_ARG(ptr, len, target); 1120 uc->target = (1<<target); 1121 #ifdef DEBUG_PROC_INFO 1122 printk("sym_user_command: target=%ld\n", target); 1123 #endif 1124 } 1125 break; 1126 } 1127 1128 switch(uc->cmd) { 1129 case UC_SETVERBOSE: 1130 case UC_SETSYNC: 1131 case UC_SETTAGS: 1132 case UC_SETWIDE: 1133 SKIP_SPACES(ptr, len); 1134 GET_INT_ARG(ptr, len, uc->data); 1135 #ifdef DEBUG_PROC_INFO 1136 printk("sym_user_command: data=%ld\n", uc->data); 1137 #endif 1138 break; 1139 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1140 case UC_SETDEBUG: 1141 while (len > 0) { 1142 SKIP_SPACES(ptr, len); 1143 if ((arg_len = is_keyword(ptr, len, "alloc"))) 1144 uc->data |= DEBUG_ALLOC; 1145 else if ((arg_len = is_keyword(ptr, len, "phase"))) 1146 uc->data |= DEBUG_PHASE; 1147 else if ((arg_len = is_keyword(ptr, len, "queue"))) 1148 uc->data |= DEBUG_QUEUE; 1149 else if ((arg_len = is_keyword(ptr, len, "result"))) 1150 uc->data |= DEBUG_RESULT; 1151 else if ((arg_len = is_keyword(ptr, len, "scatter"))) 1152 uc->data |= DEBUG_SCATTER; 1153 else if ((arg_len = is_keyword(ptr, len, "script"))) 1154 uc->data |= DEBUG_SCRIPT; 1155 else if ((arg_len = is_keyword(ptr, len, "tiny"))) 1156 uc->data |= DEBUG_TINY; 1157 else if ((arg_len = is_keyword(ptr, len, "timing"))) 1158 uc->data |= DEBUG_TIMING; 1159 else if ((arg_len = is_keyword(ptr, len, "nego"))) 1160 uc->data |= DEBUG_NEGO; 1161 else if ((arg_len = is_keyword(ptr, len, "tags"))) 1162 uc->data |= DEBUG_TAGS; 1163 else if ((arg_len = is_keyword(ptr, len, "pointer"))) 1164 uc->data |= DEBUG_POINTER; 1165 else 1166 return -EINVAL; 1167 ptr += arg_len; len -= arg_len; 1168 } 1169 #ifdef DEBUG_PROC_INFO 1170 printk("sym_user_command: data=%ld\n", uc->data); 1171 #endif 1172 break; 1173 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */ 1174 case UC_SETFLAG: 1175 while (len > 0) { 1176 SKIP_SPACES(ptr, len); 1177 if ((arg_len = is_keyword(ptr, len, "no_disc"))) 1178 uc->data &= ~SYM_DISC_ENABLED; 1179 else 1180 return -EINVAL; 1181 ptr += arg_len; len -= arg_len; 1182 } 1183 break; 1184 default: 1185 break; 1186 } 1187 1188 if (len) 1189 return -EINVAL; 1190 else { 1191 unsigned long flags; 1192 1193 spin_lock_irqsave(shost->host_lock, flags); 1194 sym_exec_user_command(np, uc); 1195 spin_unlock_irqrestore(shost->host_lock, flags); 1196 } 1197 return length; 1198 } 1199 1200 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */ 1201 1202 1203 /* 1204 * Copy formatted information into the input buffer. 1205 */ 1206 static int sym_show_info(struct seq_file *m, struct Scsi_Host *shost) 1207 { 1208 #ifdef SYM_LINUX_USER_INFO_SUPPORT 1209 struct sym_data *sym_data = shost_priv(shost); 1210 struct pci_dev *pdev = sym_data->pdev; 1211 struct sym_hcb *np = sym_data->ncb; 1212 1213 seq_printf(m, "Chip " NAME53C "%s, device id 0x%x, " 1214 "revision id 0x%x\n", np->s.chip_name, 1215 pdev->device, pdev->revision); 1216 seq_printf(m, "At PCI address %s, IRQ %u\n", 1217 pci_name(pdev), pdev->irq); 1218 seq_printf(m, "Min. period factor %d, %s SCSI BUS%s\n", 1219 (int) (np->minsync_dt ? np->minsync_dt : np->minsync), 1220 np->maxwide ? "Wide" : "Narrow", 1221 np->minsync_dt ? ", DT capable" : ""); 1222 1223 seq_printf(m, "Max. started commands %d, " 1224 "max. commands per LUN %d\n", 1225 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG); 1226 1227 return 0; 1228 #else 1229 return -EINVAL; 1230 #endif /* SYM_LINUX_USER_INFO_SUPPORT */ 1231 } 1232 1233 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */ 1234 1235 /* 1236 * Free resources claimed by sym_iomap_device(). Note that 1237 * sym_free_resources() should be used instead of this function after calling 1238 * sym_attach(). 1239 */ 1240 static void sym_iounmap_device(struct sym_device *device) 1241 { 1242 if (device->s.ioaddr) 1243 pci_iounmap(device->pdev, device->s.ioaddr); 1244 if (device->s.ramaddr) 1245 pci_iounmap(device->pdev, device->s.ramaddr); 1246 } 1247 1248 /* 1249 * Free controller resources. 1250 */ 1251 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev, 1252 int do_free_irq) 1253 { 1254 /* 1255 * Free O/S specific resources. 1256 */ 1257 if (do_free_irq) 1258 free_irq(pdev->irq, np->s.host); 1259 if (np->s.ioaddr) 1260 pci_iounmap(pdev, np->s.ioaddr); 1261 if (np->s.ramaddr) 1262 pci_iounmap(pdev, np->s.ramaddr); 1263 /* 1264 * Free O/S independent resources. 1265 */ 1266 sym_hcb_free(np); 1267 1268 sym_mfree_dma(np, sizeof(*np), "HCB"); 1269 } 1270 1271 /* 1272 * Host attach and initialisations. 1273 * 1274 * Allocate host data and ncb structure. 1275 * Remap MMIO region. 1276 * Do chip initialization. 1277 * If all is OK, install interrupt handling and 1278 * start the timer daemon. 1279 */ 1280 static struct Scsi_Host *sym_attach(const struct scsi_host_template *tpnt, int unit, 1281 struct sym_device *dev) 1282 { 1283 struct sym_data *sym_data; 1284 struct sym_hcb *np = NULL; 1285 struct Scsi_Host *shost = NULL; 1286 struct pci_dev *pdev = dev->pdev; 1287 unsigned long flags; 1288 struct sym_fw *fw; 1289 int do_free_irq = 0; 1290 1291 printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n", 1292 unit, dev->chip.name, pdev->revision, pci_name(pdev), 1293 pdev->irq); 1294 1295 /* 1296 * Get the firmware for this chip. 1297 */ 1298 fw = sym_find_firmware(&dev->chip); 1299 if (!fw) 1300 goto attach_failed; 1301 1302 shost = scsi_host_alloc(tpnt, sizeof(*sym_data)); 1303 if (!shost) 1304 goto attach_failed; 1305 sym_data = shost_priv(shost); 1306 1307 /* 1308 * Allocate immediately the host control block, 1309 * since we are only expecting to succeed. :) 1310 * We keep track in the HCB of all the resources that 1311 * are to be released on error. 1312 */ 1313 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB"); 1314 if (!np) 1315 goto attach_failed; 1316 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */ 1317 sym_data->ncb = np; 1318 sym_data->pdev = pdev; 1319 np->s.host = shost; 1320 1321 pci_set_drvdata(pdev, shost); 1322 1323 /* 1324 * Copy some useful infos to the HCB. 1325 */ 1326 np->hcb_ba = vtobus(np); 1327 np->verbose = sym_driver_setup.verbose; 1328 np->s.unit = unit; 1329 np->features = dev->chip.features; 1330 np->clock_divn = dev->chip.nr_divisor; 1331 np->maxoffs = dev->chip.offset_max; 1332 np->maxburst = dev->chip.burst_max; 1333 np->myaddr = dev->host_id; 1334 np->mmio_ba = (u32)dev->mmio_base; 1335 np->ram_ba = (u32)dev->ram_base; 1336 np->s.ioaddr = dev->s.ioaddr; 1337 np->s.ramaddr = dev->s.ramaddr; 1338 1339 /* 1340 * Edit its name. 1341 */ 1342 strscpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)); 1343 sprintf(np->s.inst_name, "sym%d", np->s.unit); 1344 1345 if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) && 1346 !dma_set_mask(&pdev->dev, DMA_DAC_MASK)) { 1347 set_dac(np); 1348 } else if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { 1349 printf_warning("%s: No suitable DMA available\n", sym_name(np)); 1350 goto attach_failed; 1351 } 1352 1353 if (sym_hcb_attach(shost, fw, dev->nvram)) 1354 goto attach_failed; 1355 1356 /* 1357 * Install the interrupt handler. 1358 * If we synchonize the C code with SCRIPTS on interrupt, 1359 * we do not want to share the INTR line at all. 1360 */ 1361 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, 1362 shost)) { 1363 printf_err("%s: request irq %u failure\n", 1364 sym_name(np), pdev->irq); 1365 goto attach_failed; 1366 } 1367 do_free_irq = 1; 1368 1369 /* 1370 * After SCSI devices have been opened, we cannot 1371 * reset the bus safely, so we do it here. 1372 */ 1373 spin_lock_irqsave(shost->host_lock, flags); 1374 if (sym_reset_scsi_bus(np, 0)) 1375 goto reset_failed; 1376 1377 /* 1378 * Start the SCRIPTS. 1379 */ 1380 sym_start_up(shost, 1); 1381 1382 /* 1383 * Start the timer daemon 1384 */ 1385 timer_setup(&np->s.timer, sym53c8xx_timer, 0); 1386 np->s.lasttime=0; 1387 sym_timer (np); 1388 1389 /* 1390 * Fill Linux host instance structure 1391 * and return success. 1392 */ 1393 shost->max_channel = 0; 1394 shost->this_id = np->myaddr; 1395 shost->max_id = np->maxwide ? 16 : 8; 1396 shost->max_lun = SYM_CONF_MAX_LUN; 1397 shost->unique_id = pci_resource_start(pdev, 0); 1398 shost->cmd_per_lun = SYM_CONF_MAX_TAG; 1399 shost->can_queue = (SYM_CONF_MAX_START-2); 1400 shost->sg_tablesize = SYM_CONF_MAX_SG; 1401 shost->max_cmd_len = 16; 1402 BUG_ON(sym2_transport_template == NULL); 1403 shost->transportt = sym2_transport_template; 1404 1405 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */ 1406 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2) 1407 shost->dma_boundary = 0xFFFFFF; 1408 1409 spin_unlock_irqrestore(shost->host_lock, flags); 1410 1411 return shost; 1412 1413 reset_failed: 1414 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, " 1415 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np)); 1416 spin_unlock_irqrestore(shost->host_lock, flags); 1417 attach_failed: 1418 printf_info("sym%d: giving up ...\n", unit); 1419 if (np) 1420 sym_free_resources(np, pdev, do_free_irq); 1421 else 1422 sym_iounmap_device(dev); 1423 if (shost) 1424 scsi_host_put(shost); 1425 1426 return NULL; 1427 } 1428 1429 1430 /* 1431 * Detect and try to read SYMBIOS and TEKRAM NVRAM. 1432 */ 1433 #if SYM_CONF_NVRAM_SUPPORT 1434 static void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1435 { 1436 devp->nvram = nvp; 1437 nvp->type = 0; 1438 1439 sym_read_nvram(devp, nvp); 1440 } 1441 #else 1442 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1443 { 1444 } 1445 #endif /* SYM_CONF_NVRAM_SUPPORT */ 1446 1447 static int sym_check_supported(struct sym_device *device) 1448 { 1449 struct sym_chip *chip; 1450 struct pci_dev *pdev = device->pdev; 1451 unsigned long io_port = pci_resource_start(pdev, 0); 1452 int i; 1453 1454 /* 1455 * If user excluded this chip, do not initialize it. 1456 * I hate this code so much. Must kill it. 1457 */ 1458 if (io_port) { 1459 for (i = 0 ; i < 8 ; i++) { 1460 if (sym_driver_setup.excludes[i] == io_port) 1461 return -ENODEV; 1462 } 1463 } 1464 1465 /* 1466 * Check if the chip is supported. Then copy the chip description 1467 * to our device structure so we can make it match the actual device 1468 * and options. 1469 */ 1470 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1471 if (!chip) { 1472 dev_info(&pdev->dev, "device not supported\n"); 1473 return -ENODEV; 1474 } 1475 memcpy(&device->chip, chip, sizeof(device->chip)); 1476 1477 return 0; 1478 } 1479 1480 /* 1481 * Ignore Symbios chips controlled by various RAID controllers. 1482 * These controllers set value 0x52414944 at RAM end - 16. 1483 */ 1484 static int sym_check_raid(struct sym_device *device) 1485 { 1486 unsigned int ram_size, ram_val; 1487 1488 if (!device->s.ramaddr) 1489 return 0; 1490 1491 if (device->chip.features & FE_RAM8K) 1492 ram_size = 8192; 1493 else 1494 ram_size = 4096; 1495 1496 ram_val = readl(device->s.ramaddr + ram_size - 16); 1497 if (ram_val != 0x52414944) 1498 return 0; 1499 1500 dev_info(&device->pdev->dev, 1501 "not initializing, driven by RAID controller.\n"); 1502 return -ENODEV; 1503 } 1504 1505 static int sym_set_workarounds(struct sym_device *device) 1506 { 1507 struct sym_chip *chip = &device->chip; 1508 struct pci_dev *pdev = device->pdev; 1509 u_short status_reg; 1510 1511 /* 1512 * (ITEM 12 of a DEL about the 896 I haven't yet). 1513 * We must ensure the chip will use WRITE AND INVALIDATE. 1514 * The revision number limit is for now arbitrary. 1515 */ 1516 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) { 1517 chip->features |= (FE_WRIE | FE_CLSE); 1518 } 1519 1520 /* If the chip can do Memory Write Invalidate, enable it */ 1521 if (chip->features & FE_WRIE) { 1522 if (pci_set_mwi(pdev)) 1523 return -ENODEV; 1524 } 1525 1526 /* 1527 * Work around for errant bit in 895A. The 66Mhz 1528 * capable bit is set erroneously. Clear this bit. 1529 * (Item 1 DEL 533) 1530 * 1531 * Make sure Config space and Features agree. 1532 * 1533 * Recall: writes are not normal to status register - 1534 * write a 1 to clear and a 0 to leave unchanged. 1535 * Can only reset bits. 1536 */ 1537 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1538 if (chip->features & FE_66MHZ) { 1539 if (!(status_reg & PCI_STATUS_66MHZ)) 1540 chip->features &= ~FE_66MHZ; 1541 } else { 1542 if (status_reg & PCI_STATUS_66MHZ) { 1543 status_reg = PCI_STATUS_66MHZ; 1544 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1545 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1546 } 1547 } 1548 1549 return 0; 1550 } 1551 1552 /* 1553 * Map HBA registers and on-chip SRAM (if present). 1554 */ 1555 static int sym_iomap_device(struct sym_device *device) 1556 { 1557 struct pci_dev *pdev = device->pdev; 1558 struct pci_bus_region bus_addr; 1559 int i = 2; 1560 1561 pcibios_resource_to_bus(pdev->bus, &bus_addr, &pdev->resource[1]); 1562 device->mmio_base = bus_addr.start; 1563 1564 if (device->chip.features & FE_RAM) { 1565 /* 1566 * If the BAR is 64-bit, resource 2 will be occupied by the 1567 * upper 32 bits 1568 */ 1569 if (!pdev->resource[i].flags) 1570 i++; 1571 pcibios_resource_to_bus(pdev->bus, &bus_addr, 1572 &pdev->resource[i]); 1573 device->ram_base = bus_addr.start; 1574 } 1575 1576 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO 1577 if (device->mmio_base) 1578 device->s.ioaddr = pci_iomap(pdev, 1, 1579 pci_resource_len(pdev, 1)); 1580 #endif 1581 if (!device->s.ioaddr) 1582 device->s.ioaddr = pci_iomap(pdev, 0, 1583 pci_resource_len(pdev, 0)); 1584 if (!device->s.ioaddr) { 1585 dev_err(&pdev->dev, "could not map registers; giving up.\n"); 1586 return -EIO; 1587 } 1588 if (device->ram_base) { 1589 device->s.ramaddr = pci_iomap(pdev, i, 1590 pci_resource_len(pdev, i)); 1591 if (!device->s.ramaddr) { 1592 dev_warn(&pdev->dev, 1593 "could not map SRAM; continuing anyway.\n"); 1594 device->ram_base = 0; 1595 } 1596 } 1597 1598 return 0; 1599 } 1600 1601 /* 1602 * The NCR PQS and PDS cards are constructed as a DEC bridge 1603 * behind which sits a proprietary NCR memory controller and 1604 * either four or two 53c875s as separate devices. We can tell 1605 * if an 875 is part of a PQS/PDS or not since if it is, it will 1606 * be on the same bus as the memory controller. In its usual 1607 * mode of operation, the 875s are slaved to the memory 1608 * controller for all transfers. To operate with the Linux 1609 * driver, the memory controller is disabled and the 875s 1610 * freed to function independently. The only wrinkle is that 1611 * the preset SCSI ID (which may be zero) must be read in from 1612 * a special configuration space register of the 875. 1613 */ 1614 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev) 1615 { 1616 int slot; 1617 u8 tmp; 1618 1619 for (slot = 0; slot < 256; slot++) { 1620 struct pci_dev *memc = pci_get_slot(pdev->bus, slot); 1621 1622 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) { 1623 pci_dev_put(memc); 1624 continue; 1625 } 1626 1627 /* bit 1: allow individual 875 configuration */ 1628 pci_read_config_byte(memc, 0x44, &tmp); 1629 if ((tmp & 0x2) == 0) { 1630 tmp |= 0x2; 1631 pci_write_config_byte(memc, 0x44, tmp); 1632 } 1633 1634 /* bit 2: drive individual 875 interrupts to the bus */ 1635 pci_read_config_byte(memc, 0x45, &tmp); 1636 if ((tmp & 0x4) == 0) { 1637 tmp |= 0x4; 1638 pci_write_config_byte(memc, 0x45, tmp); 1639 } 1640 1641 pci_dev_put(memc); 1642 break; 1643 } 1644 1645 pci_read_config_byte(pdev, 0x84, &tmp); 1646 sym_dev->host_id = tmp; 1647 } 1648 1649 /* 1650 * Called before unloading the module. 1651 * Detach the host. 1652 * We have to free resources and halt the NCR chip. 1653 */ 1654 static int sym_detach(struct Scsi_Host *shost, struct pci_dev *pdev) 1655 { 1656 struct sym_hcb *np = sym_get_hcb(shost); 1657 printk("%s: detaching ...\n", sym_name(np)); 1658 1659 del_timer_sync(&np->s.timer); 1660 1661 /* 1662 * Reset NCR chip. 1663 * We should use sym_soft_reset(), but we don't want to do 1664 * so, since we may not be safe if interrupts occur. 1665 */ 1666 printk("%s: resetting chip\n", sym_name(np)); 1667 OUTB(np, nc_istat, SRST); 1668 INB(np, nc_mbox1); 1669 udelay(10); 1670 OUTB(np, nc_istat, 0); 1671 1672 sym_free_resources(np, pdev, 1); 1673 scsi_host_put(shost); 1674 1675 return 1; 1676 } 1677 1678 /* 1679 * Driver host template. 1680 */ 1681 static const struct scsi_host_template sym2_template = { 1682 .module = THIS_MODULE, 1683 .name = "sym53c8xx", 1684 .info = sym53c8xx_info, 1685 .cmd_size = sizeof(struct sym_ucmd), 1686 .queuecommand = sym53c8xx_queue_command, 1687 .slave_alloc = sym53c8xx_slave_alloc, 1688 .slave_configure = sym53c8xx_slave_configure, 1689 .slave_destroy = sym53c8xx_slave_destroy, 1690 .eh_abort_handler = sym53c8xx_eh_abort_handler, 1691 .eh_target_reset_handler = sym53c8xx_eh_target_reset_handler, 1692 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, 1693 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, 1694 .this_id = 7, 1695 .max_sectors = 0xFFFF, 1696 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 1697 .show_info = sym_show_info, 1698 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 1699 .write_info = sym_user_command, 1700 #endif 1701 .proc_name = NAME53C8XX, 1702 #endif 1703 }; 1704 1705 static int attach_count; 1706 1707 static int sym2_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1708 { 1709 struct sym_device sym_dev; 1710 struct sym_nvram nvram; 1711 struct Scsi_Host *shost; 1712 int do_iounmap = 0; 1713 int do_disable_device = 1; 1714 1715 memset(&sym_dev, 0, sizeof(sym_dev)); 1716 memset(&nvram, 0, sizeof(nvram)); 1717 sym_dev.pdev = pdev; 1718 sym_dev.host_id = SYM_SETUP_HOST_ID; 1719 1720 if (pci_enable_device(pdev)) 1721 goto leave; 1722 1723 pci_set_master(pdev); 1724 1725 if (pci_request_regions(pdev, NAME53C8XX)) 1726 goto disable; 1727 1728 if (sym_check_supported(&sym_dev)) 1729 goto free; 1730 1731 if (sym_iomap_device(&sym_dev)) 1732 goto free; 1733 do_iounmap = 1; 1734 1735 if (sym_check_raid(&sym_dev)) { 1736 do_disable_device = 0; /* Don't disable the device */ 1737 goto free; 1738 } 1739 1740 if (sym_set_workarounds(&sym_dev)) 1741 goto free; 1742 1743 sym_config_pqs(pdev, &sym_dev); 1744 1745 sym_get_nvram(&sym_dev, &nvram); 1746 1747 do_iounmap = 0; /* Don't sym_iounmap_device() after sym_attach(). */ 1748 shost = sym_attach(&sym2_template, attach_count, &sym_dev); 1749 if (!shost) 1750 goto free; 1751 1752 if (scsi_add_host(shost, &pdev->dev)) 1753 goto detach; 1754 scsi_scan_host(shost); 1755 1756 attach_count++; 1757 1758 return 0; 1759 1760 detach: 1761 sym_detach(pci_get_drvdata(pdev), pdev); 1762 free: 1763 if (do_iounmap) 1764 sym_iounmap_device(&sym_dev); 1765 pci_release_regions(pdev); 1766 disable: 1767 if (do_disable_device) 1768 pci_disable_device(pdev); 1769 leave: 1770 return -ENODEV; 1771 } 1772 1773 static void sym2_remove(struct pci_dev *pdev) 1774 { 1775 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1776 1777 scsi_remove_host(shost); 1778 sym_detach(shost, pdev); 1779 pci_release_regions(pdev); 1780 pci_disable_device(pdev); 1781 1782 attach_count--; 1783 } 1784 1785 /** 1786 * sym2_io_error_detected() - called when PCI error is detected 1787 * @pdev: pointer to PCI device 1788 * @state: current state of the PCI slot 1789 */ 1790 static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev, 1791 pci_channel_state_t state) 1792 { 1793 /* If slot is permanently frozen, turn everything off */ 1794 if (state == pci_channel_io_perm_failure) { 1795 sym2_remove(pdev); 1796 return PCI_ERS_RESULT_DISCONNECT; 1797 } 1798 1799 disable_irq(pdev->irq); 1800 pci_disable_device(pdev); 1801 1802 /* Request that MMIO be enabled, so register dump can be taken. */ 1803 return PCI_ERS_RESULT_CAN_RECOVER; 1804 } 1805 1806 /** 1807 * sym2_io_slot_dump - Enable MMIO and dump debug registers 1808 * @pdev: pointer to PCI device 1809 */ 1810 static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev) 1811 { 1812 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1813 1814 sym_dump_registers(shost); 1815 1816 /* Request a slot reset. */ 1817 return PCI_ERS_RESULT_NEED_RESET; 1818 } 1819 1820 /** 1821 * sym2_reset_workarounds - hardware-specific work-arounds 1822 * @pdev: pointer to PCI device 1823 * 1824 * This routine is similar to sym_set_workarounds(), except 1825 * that, at this point, we already know that the device was 1826 * successfully initialized at least once before, and so most 1827 * of the steps taken there are un-needed here. 1828 */ 1829 static void sym2_reset_workarounds(struct pci_dev *pdev) 1830 { 1831 u_short status_reg; 1832 struct sym_chip *chip; 1833 1834 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1835 1836 /* Work around for errant bit in 895A, in a fashion 1837 * similar to what is done in sym_set_workarounds(). 1838 */ 1839 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1840 if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) { 1841 status_reg = PCI_STATUS_66MHZ; 1842 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1843 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1844 } 1845 } 1846 1847 /** 1848 * sym2_io_slot_reset() - called when the pci bus has been reset. 1849 * @pdev: pointer to PCI device 1850 * 1851 * Restart the card from scratch. 1852 */ 1853 static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev) 1854 { 1855 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1856 struct sym_hcb *np = sym_get_hcb(shost); 1857 1858 printk(KERN_INFO "%s: recovering from a PCI slot reset\n", 1859 sym_name(np)); 1860 1861 if (pci_enable_device(pdev)) { 1862 printk(KERN_ERR "%s: Unable to enable after PCI reset\n", 1863 sym_name(np)); 1864 return PCI_ERS_RESULT_DISCONNECT; 1865 } 1866 1867 pci_set_master(pdev); 1868 enable_irq(pdev->irq); 1869 1870 /* If the chip can do Memory Write Invalidate, enable it */ 1871 if (np->features & FE_WRIE) { 1872 if (pci_set_mwi(pdev)) 1873 return PCI_ERS_RESULT_DISCONNECT; 1874 } 1875 1876 /* Perform work-arounds, analogous to sym_set_workarounds() */ 1877 sym2_reset_workarounds(pdev); 1878 1879 /* Perform host reset only on one instance of the card */ 1880 if (PCI_FUNC(pdev->devfn) == 0) { 1881 if (sym_reset_scsi_bus(np, 0)) { 1882 printk(KERN_ERR "%s: Unable to reset scsi host\n", 1883 sym_name(np)); 1884 return PCI_ERS_RESULT_DISCONNECT; 1885 } 1886 sym_start_up(shost, 1); 1887 } 1888 1889 return PCI_ERS_RESULT_RECOVERED; 1890 } 1891 1892 /** 1893 * sym2_io_resume() - resume normal ops after PCI reset 1894 * @pdev: pointer to PCI device 1895 * 1896 * Called when the error recovery driver tells us that its 1897 * OK to resume normal operation. Use completion to allow 1898 * halted scsi ops to resume. 1899 */ 1900 static void sym2_io_resume(struct pci_dev *pdev) 1901 { 1902 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1903 struct sym_data *sym_data = shost_priv(shost); 1904 1905 spin_lock_irq(shost->host_lock); 1906 if (sym_data->io_reset) 1907 complete(sym_data->io_reset); 1908 spin_unlock_irq(shost->host_lock); 1909 } 1910 1911 static void sym2_get_signalling(struct Scsi_Host *shost) 1912 { 1913 struct sym_hcb *np = sym_get_hcb(shost); 1914 enum spi_signal_type type; 1915 1916 switch (np->scsi_mode) { 1917 case SMODE_SE: 1918 type = SPI_SIGNAL_SE; 1919 break; 1920 case SMODE_LVD: 1921 type = SPI_SIGNAL_LVD; 1922 break; 1923 case SMODE_HVD: 1924 type = SPI_SIGNAL_HVD; 1925 break; 1926 default: 1927 type = SPI_SIGNAL_UNKNOWN; 1928 break; 1929 } 1930 spi_signalling(shost) = type; 1931 } 1932 1933 static void sym2_set_offset(struct scsi_target *starget, int offset) 1934 { 1935 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1936 struct sym_hcb *np = sym_get_hcb(shost); 1937 struct sym_tcb *tp = &np->target[starget->id]; 1938 1939 tp->tgoal.offset = offset; 1940 tp->tgoal.check_nego = 1; 1941 } 1942 1943 static void sym2_set_period(struct scsi_target *starget, int period) 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 /* have to have DT for these transfers, but DT will also 1950 * set width, so check that this is allowed */ 1951 if (period <= np->minsync && spi_width(starget)) 1952 tp->tgoal.dt = 1; 1953 1954 tp->tgoal.period = period; 1955 tp->tgoal.check_nego = 1; 1956 } 1957 1958 static void sym2_set_width(struct scsi_target *starget, int width) 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 /* It is illegal to have DT set on narrow transfers. If DT is 1965 * clear, we must also clear IU and QAS. */ 1966 if (width == 0) 1967 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 1968 1969 tp->tgoal.width = width; 1970 tp->tgoal.check_nego = 1; 1971 } 1972 1973 static void sym2_set_dt(struct scsi_target *starget, int dt) 1974 { 1975 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1976 struct sym_hcb *np = sym_get_hcb(shost); 1977 struct sym_tcb *tp = &np->target[starget->id]; 1978 1979 /* We must clear QAS and IU if DT is clear */ 1980 if (dt) 1981 tp->tgoal.dt = 1; 1982 else 1983 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 1984 tp->tgoal.check_nego = 1; 1985 } 1986 1987 #if 0 1988 static void sym2_set_iu(struct scsi_target *starget, int iu) 1989 { 1990 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1991 struct sym_hcb *np = sym_get_hcb(shost); 1992 struct sym_tcb *tp = &np->target[starget->id]; 1993 1994 if (iu) 1995 tp->tgoal.iu = tp->tgoal.dt = 1; 1996 else 1997 tp->tgoal.iu = 0; 1998 tp->tgoal.check_nego = 1; 1999 } 2000 2001 static void sym2_set_qas(struct scsi_target *starget, int qas) 2002 { 2003 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2004 struct sym_hcb *np = sym_get_hcb(shost); 2005 struct sym_tcb *tp = &np->target[starget->id]; 2006 2007 if (qas) 2008 tp->tgoal.dt = tp->tgoal.qas = 1; 2009 else 2010 tp->tgoal.qas = 0; 2011 tp->tgoal.check_nego = 1; 2012 } 2013 #endif 2014 2015 static struct spi_function_template sym2_transport_functions = { 2016 .set_offset = sym2_set_offset, 2017 .show_offset = 1, 2018 .set_period = sym2_set_period, 2019 .show_period = 1, 2020 .set_width = sym2_set_width, 2021 .show_width = 1, 2022 .set_dt = sym2_set_dt, 2023 .show_dt = 1, 2024 #if 0 2025 .set_iu = sym2_set_iu, 2026 .show_iu = 1, 2027 .set_qas = sym2_set_qas, 2028 .show_qas = 1, 2029 #endif 2030 .get_signalling = sym2_get_signalling, 2031 }; 2032 2033 static struct pci_device_id sym2_id_table[] = { 2034 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810, 2035 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2036 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820, 2037 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2038 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825, 2039 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2040 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815, 2041 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2042 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP, 2043 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2044 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860, 2045 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2046 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510, 2047 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, 2048 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896, 2049 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2050 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895, 2051 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2052 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885, 2053 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2054 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875, 2055 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2056 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510, 2057 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */ 2058 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A, 2059 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2060 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A, 2061 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2062 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33, 2063 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2064 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66, 2065 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2066 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J, 2067 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2068 { 0, } 2069 }; 2070 2071 MODULE_DEVICE_TABLE(pci, sym2_id_table); 2072 2073 static const struct pci_error_handlers sym2_err_handler = { 2074 .error_detected = sym2_io_error_detected, 2075 .mmio_enabled = sym2_io_slot_dump, 2076 .slot_reset = sym2_io_slot_reset, 2077 .resume = sym2_io_resume, 2078 }; 2079 2080 static struct pci_driver sym2_driver = { 2081 .name = NAME53C8XX, 2082 .id_table = sym2_id_table, 2083 .probe = sym2_probe, 2084 .remove = sym2_remove, 2085 .err_handler = &sym2_err_handler, 2086 }; 2087 2088 static int __init sym2_init(void) 2089 { 2090 int error; 2091 2092 sym2_setup_params(); 2093 sym2_transport_template = spi_attach_transport(&sym2_transport_functions); 2094 if (!sym2_transport_template) 2095 return -ENODEV; 2096 2097 error = pci_register_driver(&sym2_driver); 2098 if (error) 2099 spi_release_transport(sym2_transport_template); 2100 return error; 2101 } 2102 2103 static void __exit sym2_exit(void) 2104 { 2105 pci_unregister_driver(&sym2_driver); 2106 spi_release_transport(sym2_transport_template); 2107 } 2108 2109 module_init(sym2_init); 2110 module_exit(sym2_exit); 2111