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(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 /* 540 * Linux entry point of the interrupt handler. 541 */ 542 static irqreturn_t sym53c8xx_intr(int irq, void *dev_id) 543 { 544 struct Scsi_Host *shost = dev_id; 545 struct sym_data *sym_data = shost_priv(shost); 546 irqreturn_t result; 547 548 /* Avoid spinloop trying to handle interrupts on frozen device */ 549 if (pci_channel_offline(sym_data->pdev)) 550 return IRQ_NONE; 551 552 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("["); 553 554 spin_lock(shost->host_lock); 555 result = sym_interrupt(shost); 556 spin_unlock(shost->host_lock); 557 558 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n"); 559 560 return result; 561 } 562 563 /* 564 * Linux entry point of the timer handler 565 */ 566 static void sym53c8xx_timer(unsigned long npref) 567 { 568 struct sym_hcb *np = (struct sym_hcb *)npref; 569 unsigned long flags; 570 571 spin_lock_irqsave(np->s.host->host_lock, flags); 572 sym_timer(np); 573 spin_unlock_irqrestore(np->s.host->host_lock, flags); 574 } 575 576 577 /* 578 * What the eh thread wants us to perform. 579 */ 580 #define SYM_EH_ABORT 0 581 #define SYM_EH_DEVICE_RESET 1 582 #define SYM_EH_BUS_RESET 2 583 #define SYM_EH_HOST_RESET 3 584 585 /* 586 * Generic method for our eh processing. 587 * The 'op' argument tells what we have to do. 588 */ 589 static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd) 590 { 591 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 592 struct Scsi_Host *shost = cmd->device->host; 593 struct sym_data *sym_data = shost_priv(shost); 594 struct pci_dev *pdev = sym_data->pdev; 595 struct sym_hcb *np = sym_data->ncb; 596 SYM_QUEHEAD *qp; 597 int cmd_queued = 0; 598 int sts = -1; 599 struct completion eh_done; 600 601 scmd_printk(KERN_WARNING, cmd, "%s operation started\n", opname); 602 603 /* We may be in an error condition because the PCI bus 604 * went down. In this case, we need to wait until the 605 * PCI bus is reset, the card is reset, and only then 606 * proceed with the scsi error recovery. There's no 607 * point in hurrying; take a leisurely wait. 608 */ 609 #define WAIT_FOR_PCI_RECOVERY 35 610 if (pci_channel_offline(pdev)) { 611 int finished_reset = 0; 612 init_completion(&eh_done); 613 spin_lock_irq(shost->host_lock); 614 /* Make sure we didn't race */ 615 if (pci_channel_offline(pdev)) { 616 BUG_ON(sym_data->io_reset); 617 sym_data->io_reset = &eh_done; 618 } else { 619 finished_reset = 1; 620 } 621 spin_unlock_irq(shost->host_lock); 622 if (!finished_reset) 623 finished_reset = wait_for_completion_timeout 624 (sym_data->io_reset, 625 WAIT_FOR_PCI_RECOVERY*HZ); 626 spin_lock_irq(shost->host_lock); 627 sym_data->io_reset = NULL; 628 spin_unlock_irq(shost->host_lock); 629 if (!finished_reset) 630 return SCSI_FAILED; 631 } 632 633 spin_lock_irq(shost->host_lock); 634 /* This one is queued in some place -> to wait for completion */ 635 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { 636 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); 637 if (cp->cmd == cmd) { 638 cmd_queued = 1; 639 break; 640 } 641 } 642 643 /* Try to proceed the operation we have been asked for */ 644 sts = -1; 645 switch(op) { 646 case SYM_EH_ABORT: 647 sts = sym_abort_scsiio(np, cmd, 1); 648 break; 649 case SYM_EH_DEVICE_RESET: 650 sts = sym_reset_scsi_target(np, cmd->device->id); 651 break; 652 case SYM_EH_BUS_RESET: 653 sym_reset_scsi_bus(np, 1); 654 sts = 0; 655 break; 656 case SYM_EH_HOST_RESET: 657 sym_reset_scsi_bus(np, 0); 658 sym_start_up(shost, 1); 659 sts = 0; 660 break; 661 default: 662 break; 663 } 664 665 /* On error, restore everything and cross fingers :) */ 666 if (sts) 667 cmd_queued = 0; 668 669 if (cmd_queued) { 670 init_completion(&eh_done); 671 ucmd->eh_done = &eh_done; 672 spin_unlock_irq(shost->host_lock); 673 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) { 674 ucmd->eh_done = NULL; 675 sts = -2; 676 } 677 } else { 678 spin_unlock_irq(shost->host_lock); 679 } 680 681 dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname, 682 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); 683 return sts ? SCSI_FAILED : SCSI_SUCCESS; 684 } 685 686 687 /* 688 * Error handlers called from the eh thread (one thread per HBA). 689 */ 690 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd) 691 { 692 return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd); 693 } 694 695 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd) 696 { 697 return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd); 698 } 699 700 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd) 701 { 702 return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd); 703 } 704 705 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd) 706 { 707 return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd); 708 } 709 710 /* 711 * Tune device queuing depth, according to various limits. 712 */ 713 static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags) 714 { 715 struct sym_lcb *lp = sym_lp(tp, lun); 716 u_short oldtags; 717 718 if (!lp) 719 return; 720 721 oldtags = lp->s.reqtags; 722 723 if (reqtags > lp->s.scdev_depth) 724 reqtags = lp->s.scdev_depth; 725 726 lp->s.reqtags = reqtags; 727 728 if (reqtags != oldtags) { 729 dev_info(&tp->starget->dev, 730 "tagged command queuing %s, command queue depth %d.\n", 731 lp->s.reqtags ? "enabled" : "disabled", reqtags); 732 } 733 } 734 735 static int sym53c8xx_slave_alloc(struct scsi_device *sdev) 736 { 737 struct sym_hcb *np = sym_get_hcb(sdev->host); 738 struct sym_tcb *tp = &np->target[sdev->id]; 739 struct sym_lcb *lp; 740 unsigned long flags; 741 int error; 742 743 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN) 744 return -ENXIO; 745 746 spin_lock_irqsave(np->s.host->host_lock, flags); 747 748 /* 749 * Fail the device init if the device is flagged NOSCAN at BOOT in 750 * the NVRAM. This may speed up boot and maintain coherency with 751 * BIOS device numbering. Clearing the flag allows the user to 752 * rescan skipped devices later. We also return an error for 753 * devices not flagged for SCAN LUNS in the NVRAM since some single 754 * lun devices behave badly when asked for a non zero LUN. 755 */ 756 757 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) { 758 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED; 759 starget_printk(KERN_INFO, sdev->sdev_target, 760 "Scan at boot disabled in NVRAM\n"); 761 error = -ENXIO; 762 goto out; 763 } 764 765 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) { 766 if (sdev->lun != 0) { 767 error = -ENXIO; 768 goto out; 769 } 770 starget_printk(KERN_INFO, sdev->sdev_target, 771 "Multiple LUNs disabled in NVRAM\n"); 772 } 773 774 lp = sym_alloc_lcb(np, sdev->id, sdev->lun); 775 if (!lp) { 776 error = -ENOMEM; 777 goto out; 778 } 779 if (tp->nlcb == 1) 780 tp->starget = sdev->sdev_target; 781 782 spi_min_period(tp->starget) = tp->usr_period; 783 spi_max_width(tp->starget) = tp->usr_width; 784 785 error = 0; 786 out: 787 spin_unlock_irqrestore(np->s.host->host_lock, flags); 788 789 return error; 790 } 791 792 /* 793 * Linux entry point for device queue sizing. 794 */ 795 static int sym53c8xx_slave_configure(struct scsi_device *sdev) 796 { 797 struct sym_hcb *np = sym_get_hcb(sdev->host); 798 struct sym_tcb *tp = &np->target[sdev->id]; 799 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 800 int reqtags, depth_to_use; 801 802 /* 803 * Get user flags. 804 */ 805 lp->curr_flags = lp->user_flags; 806 807 /* 808 * Select queue depth from driver setup. 809 * Do not use more than configured by user. 810 * Use at least 1. 811 * Do not use more than our maximum. 812 */ 813 reqtags = sym_driver_setup.max_tag; 814 if (reqtags > tp->usrtags) 815 reqtags = tp->usrtags; 816 if (!sdev->tagged_supported) 817 reqtags = 0; 818 if (reqtags > SYM_CONF_MAX_TAG) 819 reqtags = SYM_CONF_MAX_TAG; 820 depth_to_use = reqtags ? reqtags : 1; 821 scsi_adjust_queue_depth(sdev, 822 sdev->tagged_supported ? MSG_SIMPLE_TAG : 0, 823 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 spin_lock_irqsave(np->s.host->host_lock, flags); 841 842 if (lp->busy_itlq || lp->busy_itl) { 843 /* 844 * This really shouldn't happen, but we can't return an error 845 * so let's try to stop all on-going I/O. 846 */ 847 starget_printk(KERN_WARNING, tp->starget, 848 "Removing busy LCB (%d)\n", sdev->lun); 849 sym_reset_scsi_bus(np, 1); 850 } 851 852 if (sym_free_lcb(np, sdev->id, sdev->lun) == 0) { 853 /* 854 * It was the last unit for this target. 855 */ 856 tp->head.sval = 0; 857 tp->head.wval = np->rv_scntl3; 858 tp->head.uval = 0; 859 tp->tgoal.check_nego = 1; 860 tp->starget = NULL; 861 } 862 863 spin_unlock_irqrestore(np->s.host->host_lock, flags); 864 } 865 866 /* 867 * Linux entry point for info() function 868 */ 869 static const char *sym53c8xx_info (struct Scsi_Host *host) 870 { 871 return SYM_DRIVER_NAME; 872 } 873 874 875 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 876 /* 877 * Proc file system stuff 878 * 879 * A read operation returns adapter information. 880 * A write operation is a control command. 881 * The string is parsed in the driver code and the command is passed 882 * to the sym_usercmd() function. 883 */ 884 885 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 886 887 struct sym_usrcmd { 888 u_long target; 889 u_long lun; 890 u_long data; 891 u_long cmd; 892 }; 893 894 #define UC_SETSYNC 10 895 #define UC_SETTAGS 11 896 #define UC_SETDEBUG 12 897 #define UC_SETWIDE 14 898 #define UC_SETFLAG 15 899 #define UC_SETVERBOSE 17 900 #define UC_RESETDEV 18 901 #define UC_CLEARDEV 19 902 903 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc) 904 { 905 struct sym_tcb *tp; 906 int t, l; 907 908 switch (uc->cmd) { 909 case 0: return; 910 911 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 912 case UC_SETDEBUG: 913 sym_debug_flags = uc->data; 914 break; 915 #endif 916 case UC_SETVERBOSE: 917 np->verbose = uc->data; 918 break; 919 default: 920 /* 921 * We assume that other commands apply to targets. 922 * This should always be the case and avoid the below 923 * 4 lines to be repeated 6 times. 924 */ 925 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) { 926 if (!((uc->target >> t) & 1)) 927 continue; 928 tp = &np->target[t]; 929 if (!tp->nlcb) 930 continue; 931 932 switch (uc->cmd) { 933 934 case UC_SETSYNC: 935 if (!uc->data || uc->data >= 255) { 936 tp->tgoal.iu = tp->tgoal.dt = 937 tp->tgoal.qas = 0; 938 tp->tgoal.offset = 0; 939 } else if (uc->data <= 9 && np->minsync_dt) { 940 if (uc->data < np->minsync_dt) 941 uc->data = np->minsync_dt; 942 tp->tgoal.iu = tp->tgoal.dt = 943 tp->tgoal.qas = 1; 944 tp->tgoal.width = 1; 945 tp->tgoal.period = uc->data; 946 tp->tgoal.offset = np->maxoffs_dt; 947 } else { 948 if (uc->data < np->minsync) 949 uc->data = np->minsync; 950 tp->tgoal.iu = tp->tgoal.dt = 951 tp->tgoal.qas = 0; 952 tp->tgoal.period = uc->data; 953 tp->tgoal.offset = np->maxoffs; 954 } 955 tp->tgoal.check_nego = 1; 956 break; 957 case UC_SETWIDE: 958 tp->tgoal.width = uc->data ? 1 : 0; 959 tp->tgoal.check_nego = 1; 960 break; 961 case UC_SETTAGS: 962 for (l = 0; l < SYM_CONF_MAX_LUN; l++) 963 sym_tune_dev_queuing(tp, l, uc->data); 964 break; 965 case UC_RESETDEV: 966 tp->to_reset = 1; 967 np->istat_sem = SEM; 968 OUTB(np, nc_istat, SIGP|SEM); 969 break; 970 case UC_CLEARDEV: 971 for (l = 0; l < SYM_CONF_MAX_LUN; l++) { 972 struct sym_lcb *lp = sym_lp(tp, l); 973 if (lp) lp->to_clear = 1; 974 } 975 np->istat_sem = SEM; 976 OUTB(np, nc_istat, SIGP|SEM); 977 break; 978 case UC_SETFLAG: 979 tp->usrflags = uc->data; 980 break; 981 } 982 } 983 break; 984 } 985 } 986 987 static int sym_skip_spaces(char *ptr, int len) 988 { 989 int cnt, c; 990 991 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--); 992 993 return (len - cnt); 994 } 995 996 static int get_int_arg(char *ptr, int len, u_long *pv) 997 { 998 char *end; 999 1000 *pv = simple_strtoul(ptr, &end, 10); 1001 return (end - ptr); 1002 } 1003 1004 static int is_keyword(char *ptr, int len, char *verb) 1005 { 1006 int verb_len = strlen(verb); 1007 1008 if (len >= verb_len && !memcmp(verb, ptr, verb_len)) 1009 return verb_len; 1010 else 1011 return 0; 1012 } 1013 1014 #define SKIP_SPACES(ptr, len) \ 1015 if ((arg_len = sym_skip_spaces(ptr, len)) < 1) \ 1016 return -EINVAL; \ 1017 ptr += arg_len; len -= arg_len; 1018 1019 #define GET_INT_ARG(ptr, len, v) \ 1020 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \ 1021 return -EINVAL; \ 1022 ptr += arg_len; len -= arg_len; 1023 1024 1025 /* 1026 * Parse a control command 1027 */ 1028 1029 static int sym_user_command(struct Scsi_Host *shost, char *buffer, int length) 1030 { 1031 struct sym_hcb *np = sym_get_hcb(shost); 1032 char *ptr = buffer; 1033 int len = length; 1034 struct sym_usrcmd cmd, *uc = &cmd; 1035 int arg_len; 1036 u_long target; 1037 1038 memset(uc, 0, sizeof(*uc)); 1039 1040 if (len > 0 && ptr[len-1] == '\n') 1041 --len; 1042 1043 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0) 1044 uc->cmd = UC_SETSYNC; 1045 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0) 1046 uc->cmd = UC_SETTAGS; 1047 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0) 1048 uc->cmd = UC_SETVERBOSE; 1049 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0) 1050 uc->cmd = UC_SETWIDE; 1051 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1052 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0) 1053 uc->cmd = UC_SETDEBUG; 1054 #endif 1055 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0) 1056 uc->cmd = UC_SETFLAG; 1057 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0) 1058 uc->cmd = UC_RESETDEV; 1059 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0) 1060 uc->cmd = UC_CLEARDEV; 1061 else 1062 arg_len = 0; 1063 1064 #ifdef DEBUG_PROC_INFO 1065 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd); 1066 #endif 1067 1068 if (!arg_len) 1069 return -EINVAL; 1070 ptr += arg_len; len -= arg_len; 1071 1072 switch(uc->cmd) { 1073 case UC_SETSYNC: 1074 case UC_SETTAGS: 1075 case UC_SETWIDE: 1076 case UC_SETFLAG: 1077 case UC_RESETDEV: 1078 case UC_CLEARDEV: 1079 SKIP_SPACES(ptr, len); 1080 if ((arg_len = is_keyword(ptr, len, "all")) != 0) { 1081 ptr += arg_len; len -= arg_len; 1082 uc->target = ~0; 1083 } else { 1084 GET_INT_ARG(ptr, len, target); 1085 uc->target = (1<<target); 1086 #ifdef DEBUG_PROC_INFO 1087 printk("sym_user_command: target=%ld\n", target); 1088 #endif 1089 } 1090 break; 1091 } 1092 1093 switch(uc->cmd) { 1094 case UC_SETVERBOSE: 1095 case UC_SETSYNC: 1096 case UC_SETTAGS: 1097 case UC_SETWIDE: 1098 SKIP_SPACES(ptr, len); 1099 GET_INT_ARG(ptr, len, uc->data); 1100 #ifdef DEBUG_PROC_INFO 1101 printk("sym_user_command: data=%ld\n", uc->data); 1102 #endif 1103 break; 1104 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1105 case UC_SETDEBUG: 1106 while (len > 0) { 1107 SKIP_SPACES(ptr, len); 1108 if ((arg_len = is_keyword(ptr, len, "alloc"))) 1109 uc->data |= DEBUG_ALLOC; 1110 else if ((arg_len = is_keyword(ptr, len, "phase"))) 1111 uc->data |= DEBUG_PHASE; 1112 else if ((arg_len = is_keyword(ptr, len, "queue"))) 1113 uc->data |= DEBUG_QUEUE; 1114 else if ((arg_len = is_keyword(ptr, len, "result"))) 1115 uc->data |= DEBUG_RESULT; 1116 else if ((arg_len = is_keyword(ptr, len, "scatter"))) 1117 uc->data |= DEBUG_SCATTER; 1118 else if ((arg_len = is_keyword(ptr, len, "script"))) 1119 uc->data |= DEBUG_SCRIPT; 1120 else if ((arg_len = is_keyword(ptr, len, "tiny"))) 1121 uc->data |= DEBUG_TINY; 1122 else if ((arg_len = is_keyword(ptr, len, "timing"))) 1123 uc->data |= DEBUG_TIMING; 1124 else if ((arg_len = is_keyword(ptr, len, "nego"))) 1125 uc->data |= DEBUG_NEGO; 1126 else if ((arg_len = is_keyword(ptr, len, "tags"))) 1127 uc->data |= DEBUG_TAGS; 1128 else if ((arg_len = is_keyword(ptr, len, "pointer"))) 1129 uc->data |= DEBUG_POINTER; 1130 else 1131 return -EINVAL; 1132 ptr += arg_len; len -= arg_len; 1133 } 1134 #ifdef DEBUG_PROC_INFO 1135 printk("sym_user_command: data=%ld\n", uc->data); 1136 #endif 1137 break; 1138 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */ 1139 case UC_SETFLAG: 1140 while (len > 0) { 1141 SKIP_SPACES(ptr, len); 1142 if ((arg_len = is_keyword(ptr, len, "no_disc"))) 1143 uc->data &= ~SYM_DISC_ENABLED; 1144 else 1145 return -EINVAL; 1146 ptr += arg_len; len -= arg_len; 1147 } 1148 break; 1149 default: 1150 break; 1151 } 1152 1153 if (len) 1154 return -EINVAL; 1155 else { 1156 unsigned long flags; 1157 1158 spin_lock_irqsave(shost->host_lock, flags); 1159 sym_exec_user_command(np, uc); 1160 spin_unlock_irqrestore(shost->host_lock, flags); 1161 } 1162 return length; 1163 } 1164 1165 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */ 1166 1167 1168 #ifdef SYM_LINUX_USER_INFO_SUPPORT 1169 /* 1170 * Informations through the proc file system. 1171 */ 1172 struct info_str { 1173 char *buffer; 1174 int length; 1175 int offset; 1176 int pos; 1177 }; 1178 1179 static void copy_mem_info(struct info_str *info, char *data, int len) 1180 { 1181 if (info->pos + len > info->length) 1182 len = info->length - info->pos; 1183 1184 if (info->pos + len < info->offset) { 1185 info->pos += len; 1186 return; 1187 } 1188 if (info->pos < info->offset) { 1189 data += (info->offset - info->pos); 1190 len -= (info->offset - info->pos); 1191 } 1192 1193 if (len > 0) { 1194 memcpy(info->buffer + info->pos, data, len); 1195 info->pos += len; 1196 } 1197 } 1198 1199 static int copy_info(struct info_str *info, char *fmt, ...) 1200 { 1201 va_list args; 1202 char buf[81]; 1203 int len; 1204 1205 va_start(args, fmt); 1206 len = vsprintf(buf, fmt, args); 1207 va_end(args); 1208 1209 copy_mem_info(info, buf, len); 1210 return len; 1211 } 1212 1213 /* 1214 * Copy formatted information into the input buffer. 1215 */ 1216 static int sym_host_info(struct Scsi_Host *shost, char *ptr, off_t offset, int len) 1217 { 1218 struct sym_data *sym_data = shost_priv(shost); 1219 struct pci_dev *pdev = sym_data->pdev; 1220 struct sym_hcb *np = sym_data->ncb; 1221 struct info_str info; 1222 1223 info.buffer = ptr; 1224 info.length = len; 1225 info.offset = offset; 1226 info.pos = 0; 1227 1228 copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, " 1229 "revision id 0x%x\n", np->s.chip_name, 1230 pdev->device, pdev->revision); 1231 copy_info(&info, "At PCI address %s, IRQ %u\n", 1232 pci_name(pdev), pdev->irq); 1233 copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n", 1234 (int) (np->minsync_dt ? np->minsync_dt : np->minsync), 1235 np->maxwide ? "Wide" : "Narrow", 1236 np->minsync_dt ? ", DT capable" : ""); 1237 1238 copy_info(&info, "Max. started commands %d, " 1239 "max. commands per LUN %d\n", 1240 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG); 1241 1242 return info.pos > info.offset? info.pos - info.offset : 0; 1243 } 1244 #endif /* SYM_LINUX_USER_INFO_SUPPORT */ 1245 1246 /* 1247 * Entry point of the scsi proc fs of the driver. 1248 * - func = 0 means read (returns adapter infos) 1249 * - func = 1 means write (not yet merget from sym53c8xx) 1250 */ 1251 static int sym53c8xx_proc_info(struct Scsi_Host *shost, char *buffer, 1252 char **start, off_t offset, int length, int func) 1253 { 1254 int retv; 1255 1256 if (func) { 1257 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 1258 retv = sym_user_command(shost, buffer, length); 1259 #else 1260 retv = -EINVAL; 1261 #endif 1262 } else { 1263 if (start) 1264 *start = buffer; 1265 #ifdef SYM_LINUX_USER_INFO_SUPPORT 1266 retv = sym_host_info(shost, buffer, offset, length); 1267 #else 1268 retv = -EINVAL; 1269 #endif 1270 } 1271 1272 return retv; 1273 } 1274 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */ 1275 1276 /* 1277 * Free resources claimed by sym_iomap_device(). Note that 1278 * sym_free_resources() should be used instead of this function after calling 1279 * sym_attach(). 1280 */ 1281 static void __devinit 1282 sym_iounmap_device(struct sym_device *device) 1283 { 1284 if (device->s.ioaddr) 1285 pci_iounmap(device->pdev, device->s.ioaddr); 1286 if (device->s.ramaddr) 1287 pci_iounmap(device->pdev, device->s.ramaddr); 1288 } 1289 1290 /* 1291 * Free controller resources. 1292 */ 1293 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev, 1294 int do_free_irq) 1295 { 1296 /* 1297 * Free O/S specific resources. 1298 */ 1299 if (do_free_irq) 1300 free_irq(pdev->irq, np->s.host); 1301 if (np->s.ioaddr) 1302 pci_iounmap(pdev, np->s.ioaddr); 1303 if (np->s.ramaddr) 1304 pci_iounmap(pdev, np->s.ramaddr); 1305 /* 1306 * Free O/S independent resources. 1307 */ 1308 sym_hcb_free(np); 1309 1310 sym_mfree_dma(np, sizeof(*np), "HCB"); 1311 } 1312 1313 /* 1314 * Host attach and initialisations. 1315 * 1316 * Allocate host data and ncb structure. 1317 * Remap MMIO region. 1318 * Do chip initialization. 1319 * If all is OK, install interrupt handling and 1320 * start the timer daemon. 1321 */ 1322 static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt, 1323 int unit, struct sym_device *dev) 1324 { 1325 struct sym_data *sym_data; 1326 struct sym_hcb *np = NULL; 1327 struct Scsi_Host *shost = NULL; 1328 struct pci_dev *pdev = dev->pdev; 1329 unsigned long flags; 1330 struct sym_fw *fw; 1331 int do_free_irq = 0; 1332 1333 printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n", 1334 unit, dev->chip.name, pdev->revision, pci_name(pdev), 1335 pdev->irq); 1336 1337 /* 1338 * Get the firmware for this chip. 1339 */ 1340 fw = sym_find_firmware(&dev->chip); 1341 if (!fw) 1342 goto attach_failed; 1343 1344 shost = scsi_host_alloc(tpnt, sizeof(*sym_data)); 1345 if (!shost) 1346 goto attach_failed; 1347 sym_data = shost_priv(shost); 1348 1349 /* 1350 * Allocate immediately the host control block, 1351 * since we are only expecting to succeed. :) 1352 * We keep track in the HCB of all the resources that 1353 * are to be released on error. 1354 */ 1355 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB"); 1356 if (!np) 1357 goto attach_failed; 1358 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */ 1359 sym_data->ncb = np; 1360 sym_data->pdev = pdev; 1361 np->s.host = shost; 1362 1363 pci_set_drvdata(pdev, shost); 1364 1365 /* 1366 * Copy some useful infos to the HCB. 1367 */ 1368 np->hcb_ba = vtobus(np); 1369 np->verbose = sym_driver_setup.verbose; 1370 np->s.unit = unit; 1371 np->features = dev->chip.features; 1372 np->clock_divn = dev->chip.nr_divisor; 1373 np->maxoffs = dev->chip.offset_max; 1374 np->maxburst = dev->chip.burst_max; 1375 np->myaddr = dev->host_id; 1376 np->mmio_ba = (u32)dev->mmio_base; 1377 np->ram_ba = (u32)dev->ram_base; 1378 np->s.ioaddr = dev->s.ioaddr; 1379 np->s.ramaddr = dev->s.ramaddr; 1380 1381 /* 1382 * Edit its name. 1383 */ 1384 strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)); 1385 sprintf(np->s.inst_name, "sym%d", np->s.unit); 1386 1387 if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) && 1388 !pci_set_dma_mask(pdev, DMA_DAC_MASK)) { 1389 set_dac(np); 1390 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { 1391 printf_warning("%s: No suitable DMA available\n", sym_name(np)); 1392 goto attach_failed; 1393 } 1394 1395 if (sym_hcb_attach(shost, fw, dev->nvram)) 1396 goto attach_failed; 1397 1398 /* 1399 * Install the interrupt handler. 1400 * If we synchonize the C code with SCRIPTS on interrupt, 1401 * we do not want to share the INTR line at all. 1402 */ 1403 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, 1404 shost)) { 1405 printf_err("%s: request irq %u failure\n", 1406 sym_name(np), pdev->irq); 1407 goto attach_failed; 1408 } 1409 do_free_irq = 1; 1410 1411 /* 1412 * After SCSI devices have been opened, we cannot 1413 * reset the bus safely, so we do it here. 1414 */ 1415 spin_lock_irqsave(shost->host_lock, flags); 1416 if (sym_reset_scsi_bus(np, 0)) 1417 goto reset_failed; 1418 1419 /* 1420 * Start the SCRIPTS. 1421 */ 1422 sym_start_up(shost, 1); 1423 1424 /* 1425 * Start the timer daemon 1426 */ 1427 init_timer(&np->s.timer); 1428 np->s.timer.data = (unsigned long) np; 1429 np->s.timer.function = sym53c8xx_timer; 1430 np->s.lasttime=0; 1431 sym_timer (np); 1432 1433 /* 1434 * Fill Linux host instance structure 1435 * and return success. 1436 */ 1437 shost->max_channel = 0; 1438 shost->this_id = np->myaddr; 1439 shost->max_id = np->maxwide ? 16 : 8; 1440 shost->max_lun = SYM_CONF_MAX_LUN; 1441 shost->unique_id = pci_resource_start(pdev, 0); 1442 shost->cmd_per_lun = SYM_CONF_MAX_TAG; 1443 shost->can_queue = (SYM_CONF_MAX_START-2); 1444 shost->sg_tablesize = SYM_CONF_MAX_SG; 1445 shost->max_cmd_len = 16; 1446 BUG_ON(sym2_transport_template == NULL); 1447 shost->transportt = sym2_transport_template; 1448 1449 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */ 1450 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2) 1451 shost->dma_boundary = 0xFFFFFF; 1452 1453 spin_unlock_irqrestore(shost->host_lock, flags); 1454 1455 return shost; 1456 1457 reset_failed: 1458 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, " 1459 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np)); 1460 spin_unlock_irqrestore(shost->host_lock, flags); 1461 attach_failed: 1462 printf_info("sym%d: giving up ...\n", unit); 1463 if (np) 1464 sym_free_resources(np, pdev, do_free_irq); 1465 else 1466 sym_iounmap_device(dev); 1467 if (shost) 1468 scsi_host_put(shost); 1469 1470 return NULL; 1471 } 1472 1473 1474 /* 1475 * Detect and try to read SYMBIOS and TEKRAM NVRAM. 1476 */ 1477 #if SYM_CONF_NVRAM_SUPPORT 1478 static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1479 { 1480 devp->nvram = nvp; 1481 nvp->type = 0; 1482 1483 sym_read_nvram(devp, nvp); 1484 } 1485 #else 1486 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1487 { 1488 } 1489 #endif /* SYM_CONF_NVRAM_SUPPORT */ 1490 1491 static int __devinit sym_check_supported(struct sym_device *device) 1492 { 1493 struct sym_chip *chip; 1494 struct pci_dev *pdev = device->pdev; 1495 unsigned long io_port = pci_resource_start(pdev, 0); 1496 int i; 1497 1498 /* 1499 * If user excluded this chip, do not initialize it. 1500 * I hate this code so much. Must kill it. 1501 */ 1502 if (io_port) { 1503 for (i = 0 ; i < 8 ; i++) { 1504 if (sym_driver_setup.excludes[i] == io_port) 1505 return -ENODEV; 1506 } 1507 } 1508 1509 /* 1510 * Check if the chip is supported. Then copy the chip description 1511 * to our device structure so we can make it match the actual device 1512 * and options. 1513 */ 1514 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1515 if (!chip) { 1516 dev_info(&pdev->dev, "device not supported\n"); 1517 return -ENODEV; 1518 } 1519 memcpy(&device->chip, chip, sizeof(device->chip)); 1520 1521 return 0; 1522 } 1523 1524 /* 1525 * Ignore Symbios chips controlled by various RAID controllers. 1526 * These controllers set value 0x52414944 at RAM end - 16. 1527 */ 1528 static int __devinit sym_check_raid(struct sym_device *device) 1529 { 1530 unsigned int ram_size, ram_val; 1531 1532 if (!device->s.ramaddr) 1533 return 0; 1534 1535 if (device->chip.features & FE_RAM8K) 1536 ram_size = 8192; 1537 else 1538 ram_size = 4096; 1539 1540 ram_val = readl(device->s.ramaddr + ram_size - 16); 1541 if (ram_val != 0x52414944) 1542 return 0; 1543 1544 dev_info(&device->pdev->dev, 1545 "not initializing, driven by RAID controller.\n"); 1546 return -ENODEV; 1547 } 1548 1549 static int __devinit sym_set_workarounds(struct sym_device *device) 1550 { 1551 struct sym_chip *chip = &device->chip; 1552 struct pci_dev *pdev = device->pdev; 1553 u_short status_reg; 1554 1555 /* 1556 * (ITEM 12 of a DEL about the 896 I haven't yet). 1557 * We must ensure the chip will use WRITE AND INVALIDATE. 1558 * The revision number limit is for now arbitrary. 1559 */ 1560 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) { 1561 chip->features |= (FE_WRIE | FE_CLSE); 1562 } 1563 1564 /* If the chip can do Memory Write Invalidate, enable it */ 1565 if (chip->features & FE_WRIE) { 1566 if (pci_set_mwi(pdev)) 1567 return -ENODEV; 1568 } 1569 1570 /* 1571 * Work around for errant bit in 895A. The 66Mhz 1572 * capable bit is set erroneously. Clear this bit. 1573 * (Item 1 DEL 533) 1574 * 1575 * Make sure Config space and Features agree. 1576 * 1577 * Recall: writes are not normal to status register - 1578 * write a 1 to clear and a 0 to leave unchanged. 1579 * Can only reset bits. 1580 */ 1581 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1582 if (chip->features & FE_66MHZ) { 1583 if (!(status_reg & PCI_STATUS_66MHZ)) 1584 chip->features &= ~FE_66MHZ; 1585 } else { 1586 if (status_reg & PCI_STATUS_66MHZ) { 1587 status_reg = PCI_STATUS_66MHZ; 1588 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1589 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1590 } 1591 } 1592 1593 return 0; 1594 } 1595 1596 /* 1597 * Map HBA registers and on-chip SRAM (if present). 1598 */ 1599 static int __devinit 1600 sym_iomap_device(struct sym_device *device) 1601 { 1602 struct pci_dev *pdev = device->pdev; 1603 struct pci_bus_region bus_addr; 1604 int i = 2; 1605 1606 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]); 1607 device->mmio_base = bus_addr.start; 1608 1609 if (device->chip.features & FE_RAM) { 1610 /* 1611 * If the BAR is 64-bit, resource 2 will be occupied by the 1612 * upper 32 bits 1613 */ 1614 if (!pdev->resource[i].flags) 1615 i++; 1616 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]); 1617 device->ram_base = bus_addr.start; 1618 } 1619 1620 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO 1621 if (device->mmio_base) 1622 device->s.ioaddr = pci_iomap(pdev, 1, 1623 pci_resource_len(pdev, 1)); 1624 #endif 1625 if (!device->s.ioaddr) 1626 device->s.ioaddr = pci_iomap(pdev, 0, 1627 pci_resource_len(pdev, 0)); 1628 if (!device->s.ioaddr) { 1629 dev_err(&pdev->dev, "could not map registers; giving up.\n"); 1630 return -EIO; 1631 } 1632 if (device->ram_base) { 1633 device->s.ramaddr = pci_iomap(pdev, i, 1634 pci_resource_len(pdev, i)); 1635 if (!device->s.ramaddr) { 1636 dev_warn(&pdev->dev, 1637 "could not map SRAM; continuing anyway.\n"); 1638 device->ram_base = 0; 1639 } 1640 } 1641 1642 return 0; 1643 } 1644 1645 /* 1646 * The NCR PQS and PDS cards are constructed as a DEC bridge 1647 * behind which sits a proprietary NCR memory controller and 1648 * either four or two 53c875s as separate devices. We can tell 1649 * if an 875 is part of a PQS/PDS or not since if it is, it will 1650 * be on the same bus as the memory controller. In its usual 1651 * mode of operation, the 875s are slaved to the memory 1652 * controller for all transfers. To operate with the Linux 1653 * driver, the memory controller is disabled and the 875s 1654 * freed to function independently. The only wrinkle is that 1655 * the preset SCSI ID (which may be zero) must be read in from 1656 * a special configuration space register of the 875. 1657 */ 1658 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev) 1659 { 1660 int slot; 1661 u8 tmp; 1662 1663 for (slot = 0; slot < 256; slot++) { 1664 struct pci_dev *memc = pci_get_slot(pdev->bus, slot); 1665 1666 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) { 1667 pci_dev_put(memc); 1668 continue; 1669 } 1670 1671 /* bit 1: allow individual 875 configuration */ 1672 pci_read_config_byte(memc, 0x44, &tmp); 1673 if ((tmp & 0x2) == 0) { 1674 tmp |= 0x2; 1675 pci_write_config_byte(memc, 0x44, tmp); 1676 } 1677 1678 /* bit 2: drive individual 875 interrupts to the bus */ 1679 pci_read_config_byte(memc, 0x45, &tmp); 1680 if ((tmp & 0x4) == 0) { 1681 tmp |= 0x4; 1682 pci_write_config_byte(memc, 0x45, tmp); 1683 } 1684 1685 pci_dev_put(memc); 1686 break; 1687 } 1688 1689 pci_read_config_byte(pdev, 0x84, &tmp); 1690 sym_dev->host_id = tmp; 1691 } 1692 1693 /* 1694 * Called before unloading the module. 1695 * Detach the host. 1696 * We have to free resources and halt the NCR chip. 1697 */ 1698 static int sym_detach(struct Scsi_Host *shost, struct pci_dev *pdev) 1699 { 1700 struct sym_hcb *np = sym_get_hcb(shost); 1701 printk("%s: detaching ...\n", sym_name(np)); 1702 1703 del_timer_sync(&np->s.timer); 1704 1705 /* 1706 * Reset NCR chip. 1707 * We should use sym_soft_reset(), but we don't want to do 1708 * so, since we may not be safe if interrupts occur. 1709 */ 1710 printk("%s: resetting chip\n", sym_name(np)); 1711 OUTB(np, nc_istat, SRST); 1712 INB(np, nc_mbox1); 1713 udelay(10); 1714 OUTB(np, nc_istat, 0); 1715 1716 sym_free_resources(np, pdev, 1); 1717 scsi_host_put(shost); 1718 1719 return 1; 1720 } 1721 1722 /* 1723 * Driver host template. 1724 */ 1725 static struct scsi_host_template sym2_template = { 1726 .module = THIS_MODULE, 1727 .name = "sym53c8xx", 1728 .info = sym53c8xx_info, 1729 .queuecommand = sym53c8xx_queue_command, 1730 .slave_alloc = sym53c8xx_slave_alloc, 1731 .slave_configure = sym53c8xx_slave_configure, 1732 .slave_destroy = sym53c8xx_slave_destroy, 1733 .eh_abort_handler = sym53c8xx_eh_abort_handler, 1734 .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler, 1735 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, 1736 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, 1737 .this_id = 7, 1738 .use_clustering = ENABLE_CLUSTERING, 1739 .max_sectors = 0xFFFF, 1740 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 1741 .proc_info = sym53c8xx_proc_info, 1742 .proc_name = NAME53C8XX, 1743 #endif 1744 }; 1745 1746 static int attach_count; 1747 1748 static int __devinit sym2_probe(struct pci_dev *pdev, 1749 const struct pci_device_id *ent) 1750 { 1751 struct sym_device sym_dev; 1752 struct sym_nvram nvram; 1753 struct Scsi_Host *shost; 1754 int do_iounmap = 0; 1755 int do_disable_device = 1; 1756 1757 memset(&sym_dev, 0, sizeof(sym_dev)); 1758 memset(&nvram, 0, sizeof(nvram)); 1759 sym_dev.pdev = pdev; 1760 sym_dev.host_id = SYM_SETUP_HOST_ID; 1761 1762 if (pci_enable_device(pdev)) 1763 goto leave; 1764 1765 pci_set_master(pdev); 1766 1767 if (pci_request_regions(pdev, NAME53C8XX)) 1768 goto disable; 1769 1770 if (sym_check_supported(&sym_dev)) 1771 goto free; 1772 1773 if (sym_iomap_device(&sym_dev)) 1774 goto free; 1775 do_iounmap = 1; 1776 1777 if (sym_check_raid(&sym_dev)) { 1778 do_disable_device = 0; /* Don't disable the device */ 1779 goto free; 1780 } 1781 1782 if (sym_set_workarounds(&sym_dev)) 1783 goto free; 1784 1785 sym_config_pqs(pdev, &sym_dev); 1786 1787 sym_get_nvram(&sym_dev, &nvram); 1788 1789 do_iounmap = 0; /* Don't sym_iounmap_device() after sym_attach(). */ 1790 shost = sym_attach(&sym2_template, attach_count, &sym_dev); 1791 if (!shost) 1792 goto free; 1793 1794 if (scsi_add_host(shost, &pdev->dev)) 1795 goto detach; 1796 scsi_scan_host(shost); 1797 1798 attach_count++; 1799 1800 return 0; 1801 1802 detach: 1803 sym_detach(pci_get_drvdata(pdev), pdev); 1804 free: 1805 if (do_iounmap) 1806 sym_iounmap_device(&sym_dev); 1807 pci_release_regions(pdev); 1808 disable: 1809 if (do_disable_device) 1810 pci_disable_device(pdev); 1811 leave: 1812 return -ENODEV; 1813 } 1814 1815 static void sym2_remove(struct pci_dev *pdev) 1816 { 1817 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1818 1819 scsi_remove_host(shost); 1820 sym_detach(shost, pdev); 1821 pci_release_regions(pdev); 1822 pci_disable_device(pdev); 1823 1824 attach_count--; 1825 } 1826 1827 /** 1828 * sym2_io_error_detected() - called when PCI error is detected 1829 * @pdev: pointer to PCI device 1830 * @state: current state of the PCI slot 1831 */ 1832 static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev, 1833 enum pci_channel_state state) 1834 { 1835 /* If slot is permanently frozen, turn everything off */ 1836 if (state == pci_channel_io_perm_failure) { 1837 sym2_remove(pdev); 1838 return PCI_ERS_RESULT_DISCONNECT; 1839 } 1840 1841 disable_irq(pdev->irq); 1842 pci_disable_device(pdev); 1843 1844 /* Request that MMIO be enabled, so register dump can be taken. */ 1845 return PCI_ERS_RESULT_CAN_RECOVER; 1846 } 1847 1848 /** 1849 * sym2_io_slot_dump - Enable MMIO and dump debug registers 1850 * @pdev: pointer to PCI device 1851 */ 1852 static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev) 1853 { 1854 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1855 1856 sym_dump_registers(shost); 1857 1858 /* Request a slot reset. */ 1859 return PCI_ERS_RESULT_NEED_RESET; 1860 } 1861 1862 /** 1863 * sym2_reset_workarounds - hardware-specific work-arounds 1864 * 1865 * This routine is similar to sym_set_workarounds(), except 1866 * that, at this point, we already know that the device was 1867 * successfully intialized at least once before, and so most 1868 * of the steps taken there are un-needed here. 1869 */ 1870 static void sym2_reset_workarounds(struct pci_dev *pdev) 1871 { 1872 u_short status_reg; 1873 struct sym_chip *chip; 1874 1875 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1876 1877 /* Work around for errant bit in 895A, in a fashion 1878 * similar to what is done in sym_set_workarounds(). 1879 */ 1880 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1881 if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) { 1882 status_reg = PCI_STATUS_66MHZ; 1883 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1884 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1885 } 1886 } 1887 1888 /** 1889 * sym2_io_slot_reset() - called when the pci bus has been reset. 1890 * @pdev: pointer to PCI device 1891 * 1892 * Restart the card from scratch. 1893 */ 1894 static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev) 1895 { 1896 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1897 struct sym_hcb *np = sym_get_hcb(shost); 1898 1899 printk(KERN_INFO "%s: recovering from a PCI slot reset\n", 1900 sym_name(np)); 1901 1902 if (pci_enable_device(pdev)) { 1903 printk(KERN_ERR "%s: Unable to enable after PCI reset\n", 1904 sym_name(np)); 1905 return PCI_ERS_RESULT_DISCONNECT; 1906 } 1907 1908 pci_set_master(pdev); 1909 enable_irq(pdev->irq); 1910 1911 /* If the chip can do Memory Write Invalidate, enable it */ 1912 if (np->features & FE_WRIE) { 1913 if (pci_set_mwi(pdev)) 1914 return PCI_ERS_RESULT_DISCONNECT; 1915 } 1916 1917 /* Perform work-arounds, analogous to sym_set_workarounds() */ 1918 sym2_reset_workarounds(pdev); 1919 1920 /* Perform host reset only on one instance of the card */ 1921 if (PCI_FUNC(pdev->devfn) == 0) { 1922 if (sym_reset_scsi_bus(np, 0)) { 1923 printk(KERN_ERR "%s: Unable to reset scsi host\n", 1924 sym_name(np)); 1925 return PCI_ERS_RESULT_DISCONNECT; 1926 } 1927 sym_start_up(shost, 1); 1928 } 1929 1930 return PCI_ERS_RESULT_RECOVERED; 1931 } 1932 1933 /** 1934 * sym2_io_resume() - resume normal ops after PCI reset 1935 * @pdev: pointer to PCI device 1936 * 1937 * Called when the error recovery driver tells us that its 1938 * OK to resume normal operation. Use completion to allow 1939 * halted scsi ops to resume. 1940 */ 1941 static void sym2_io_resume(struct pci_dev *pdev) 1942 { 1943 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1944 struct sym_data *sym_data = shost_priv(shost); 1945 1946 spin_lock_irq(shost->host_lock); 1947 if (sym_data->io_reset) 1948 complete_all(sym_data->io_reset); 1949 spin_unlock_irq(shost->host_lock); 1950 } 1951 1952 static void sym2_get_signalling(struct Scsi_Host *shost) 1953 { 1954 struct sym_hcb *np = sym_get_hcb(shost); 1955 enum spi_signal_type type; 1956 1957 switch (np->scsi_mode) { 1958 case SMODE_SE: 1959 type = SPI_SIGNAL_SE; 1960 break; 1961 case SMODE_LVD: 1962 type = SPI_SIGNAL_LVD; 1963 break; 1964 case SMODE_HVD: 1965 type = SPI_SIGNAL_HVD; 1966 break; 1967 default: 1968 type = SPI_SIGNAL_UNKNOWN; 1969 break; 1970 } 1971 spi_signalling(shost) = type; 1972 } 1973 1974 static void sym2_set_offset(struct scsi_target *starget, int offset) 1975 { 1976 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1977 struct sym_hcb *np = sym_get_hcb(shost); 1978 struct sym_tcb *tp = &np->target[starget->id]; 1979 1980 tp->tgoal.offset = offset; 1981 tp->tgoal.check_nego = 1; 1982 } 1983 1984 static void sym2_set_period(struct scsi_target *starget, int period) 1985 { 1986 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1987 struct sym_hcb *np = sym_get_hcb(shost); 1988 struct sym_tcb *tp = &np->target[starget->id]; 1989 1990 /* have to have DT for these transfers, but DT will also 1991 * set width, so check that this is allowed */ 1992 if (period <= np->minsync && spi_width(starget)) 1993 tp->tgoal.dt = 1; 1994 1995 tp->tgoal.period = period; 1996 tp->tgoal.check_nego = 1; 1997 } 1998 1999 static void sym2_set_width(struct scsi_target *starget, int width) 2000 { 2001 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2002 struct sym_hcb *np = sym_get_hcb(shost); 2003 struct sym_tcb *tp = &np->target[starget->id]; 2004 2005 /* It is illegal to have DT set on narrow transfers. If DT is 2006 * clear, we must also clear IU and QAS. */ 2007 if (width == 0) 2008 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 2009 2010 tp->tgoal.width = width; 2011 tp->tgoal.check_nego = 1; 2012 } 2013 2014 static void sym2_set_dt(struct scsi_target *starget, int dt) 2015 { 2016 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2017 struct sym_hcb *np = sym_get_hcb(shost); 2018 struct sym_tcb *tp = &np->target[starget->id]; 2019 2020 /* We must clear QAS and IU if DT is clear */ 2021 if (dt) 2022 tp->tgoal.dt = 1; 2023 else 2024 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 2025 tp->tgoal.check_nego = 1; 2026 } 2027 2028 #if 0 2029 static void sym2_set_iu(struct scsi_target *starget, int iu) 2030 { 2031 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2032 struct sym_hcb *np = sym_get_hcb(shost); 2033 struct sym_tcb *tp = &np->target[starget->id]; 2034 2035 if (iu) 2036 tp->tgoal.iu = tp->tgoal.dt = 1; 2037 else 2038 tp->tgoal.iu = 0; 2039 tp->tgoal.check_nego = 1; 2040 } 2041 2042 static void sym2_set_qas(struct scsi_target *starget, int qas) 2043 { 2044 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2045 struct sym_hcb *np = sym_get_hcb(shost); 2046 struct sym_tcb *tp = &np->target[starget->id]; 2047 2048 if (qas) 2049 tp->tgoal.dt = tp->tgoal.qas = 1; 2050 else 2051 tp->tgoal.qas = 0; 2052 tp->tgoal.check_nego = 1; 2053 } 2054 #endif 2055 2056 static struct spi_function_template sym2_transport_functions = { 2057 .set_offset = sym2_set_offset, 2058 .show_offset = 1, 2059 .set_period = sym2_set_period, 2060 .show_period = 1, 2061 .set_width = sym2_set_width, 2062 .show_width = 1, 2063 .set_dt = sym2_set_dt, 2064 .show_dt = 1, 2065 #if 0 2066 .set_iu = sym2_set_iu, 2067 .show_iu = 1, 2068 .set_qas = sym2_set_qas, 2069 .show_qas = 1, 2070 #endif 2071 .get_signalling = sym2_get_signalling, 2072 }; 2073 2074 static struct pci_device_id sym2_id_table[] __devinitdata = { 2075 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810, 2076 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2077 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820, 2078 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2079 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825, 2080 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2081 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815, 2082 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2083 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP, 2084 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2085 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860, 2086 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2087 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510, 2088 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, 2089 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896, 2090 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2091 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895, 2092 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2093 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885, 2094 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2095 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875, 2096 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2097 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510, 2098 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */ 2099 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A, 2100 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2101 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A, 2102 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2103 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33, 2104 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2105 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66, 2106 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2107 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J, 2108 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2109 { 0, } 2110 }; 2111 2112 MODULE_DEVICE_TABLE(pci, sym2_id_table); 2113 2114 static struct pci_error_handlers sym2_err_handler = { 2115 .error_detected = sym2_io_error_detected, 2116 .mmio_enabled = sym2_io_slot_dump, 2117 .slot_reset = sym2_io_slot_reset, 2118 .resume = sym2_io_resume, 2119 }; 2120 2121 static struct pci_driver sym2_driver = { 2122 .name = NAME53C8XX, 2123 .id_table = sym2_id_table, 2124 .probe = sym2_probe, 2125 .remove = sym2_remove, 2126 .err_handler = &sym2_err_handler, 2127 }; 2128 2129 static int __init sym2_init(void) 2130 { 2131 int error; 2132 2133 sym2_setup_params(); 2134 sym2_transport_template = spi_attach_transport(&sym2_transport_functions); 2135 if (!sym2_transport_template) 2136 return -ENODEV; 2137 2138 error = pci_register_driver(&sym2_driver); 2139 if (error) 2140 spi_release_transport(sym2_transport_template); 2141 return error; 2142 } 2143 2144 static void __exit sym2_exit(void) 2145 { 2146 pci_unregister_driver(&sym2_driver); 2147 spi_release_transport(sym2_transport_template); 2148 } 2149 2150 module_init(sym2_init); 2151 module_exit(sym2_exit); 2152