1 /* 2 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family 3 * of PCI-SCSI IO processors. 4 * 5 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr> 6 * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx> 7 * 8 * This driver is derived from the Linux sym53c8xx driver. 9 * Copyright (C) 1998-2000 Gerard Roudier 10 * 11 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been 12 * a port of the FreeBSD ncr driver to Linux-1.2.13. 13 * 14 * The original ncr driver has been written for 386bsd and FreeBSD by 15 * Wolfgang Stanglmeier <wolf@cologne.de> 16 * Stefan Esser <se@mi.Uni-Koeln.de> 17 * Copyright (C) 1994 Wolfgang Stanglmeier 18 * 19 * Other major contributions: 20 * 21 * NVRAM detection and reading. 22 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> 23 * 24 *----------------------------------------------------------------------------- 25 * 26 * This program is free software; you can redistribute it and/or modify 27 * it under the terms of the GNU General Public License as published by 28 * the Free Software Foundation; either version 2 of the License, or 29 * (at your option) any later version. 30 * 31 * This program is distributed in the hope that it will be useful, 32 * but WITHOUT ANY WARRANTY; without even the implied warranty of 33 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 34 * GNU General Public License for more details. 35 * 36 * You should have received a copy of the GNU General Public License 37 * along with this program; if not, write to the Free Software 38 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 39 */ 40 #include <linux/ctype.h> 41 #include <linux/init.h> 42 #include <linux/module.h> 43 #include <linux/moduleparam.h> 44 #include <linux/spinlock.h> 45 #include <scsi/scsi.h> 46 #include <scsi/scsi_tcq.h> 47 #include <scsi/scsi_device.h> 48 #include <scsi/scsi_transport.h> 49 50 #include "sym_glue.h" 51 #include "sym_nvram.h" 52 53 #define NAME53C "sym53c" 54 #define NAME53C8XX "sym53c8xx" 55 56 struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP; 57 unsigned int sym_debug_flags = 0; 58 59 static char *excl_string; 60 static char *safe_string; 61 module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0); 62 module_param_named(burst, sym_driver_setup.burst_order, byte, 0); 63 module_param_named(led, sym_driver_setup.scsi_led, byte, 0); 64 module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0); 65 module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0); 66 module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0); 67 module_param_named(hostid, sym_driver_setup.host_id, byte, 0); 68 module_param_named(verb, sym_driver_setup.verbose, byte, 0); 69 module_param_named(debug, sym_debug_flags, uint, 0); 70 module_param_named(settle, sym_driver_setup.settle_delay, byte, 0); 71 module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0); 72 module_param_named(excl, excl_string, charp, 0); 73 module_param_named(safe, safe_string, charp, 0); 74 75 MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default"); 76 MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers"); 77 MODULE_PARM_DESC(led, "Set to 1 to enable LED support"); 78 MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3"); 79 MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole"); 80 MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error"); 81 MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters"); 82 MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive"); 83 MODULE_PARM_DESC(debug, "Set bits to enable debugging"); 84 MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3"); 85 MODULE_PARM_DESC(nvram, "Option currently not used"); 86 MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached"); 87 MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\""); 88 89 MODULE_LICENSE("GPL"); 90 MODULE_VERSION(SYM_VERSION); 91 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>"); 92 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters"); 93 94 static void sym2_setup_params(void) 95 { 96 char *p = excl_string; 97 int xi = 0; 98 99 while (p && (xi < 8)) { 100 char *next_p; 101 int val = (int) simple_strtoul(p, &next_p, 0); 102 sym_driver_setup.excludes[xi++] = val; 103 p = next_p; 104 } 105 106 if (safe_string) { 107 if (*safe_string == 'y') { 108 sym_driver_setup.max_tag = 0; 109 sym_driver_setup.burst_order = 0; 110 sym_driver_setup.scsi_led = 0; 111 sym_driver_setup.scsi_diff = 1; 112 sym_driver_setup.irq_mode = 0; 113 sym_driver_setup.scsi_bus_check = 2; 114 sym_driver_setup.host_id = 7; 115 sym_driver_setup.verbose = 2; 116 sym_driver_setup.settle_delay = 10; 117 sym_driver_setup.use_nvram = 1; 118 } else if (*safe_string != 'n') { 119 printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s" 120 " passed to safe option", safe_string); 121 } 122 } 123 } 124 125 static struct scsi_transport_template *sym2_transport_template = NULL; 126 127 /* 128 * Driver private area in the SCSI command structure. 129 */ 130 struct sym_ucmd { /* Override the SCSI pointer structure */ 131 struct completion *eh_done; /* SCSI error handling */ 132 }; 133 134 #define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)(&(cmd)->SCp)) 135 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host) 136 137 /* 138 * Complete a pending CAM CCB. 139 */ 140 void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd) 141 { 142 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 143 BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd)); 144 145 if (ucmd->eh_done) 146 complete(ucmd->eh_done); 147 148 scsi_dma_unmap(cmd); 149 cmd->scsi_done(cmd); 150 } 151 152 /* 153 * Tell the SCSI layer about a BUS RESET. 154 */ 155 void sym_xpt_async_bus_reset(struct sym_hcb *np) 156 { 157 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np)); 158 np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ; 159 np->s.settle_time_valid = 1; 160 if (sym_verbose >= 2) 161 printf_info("%s: command processing suspended for %d seconds\n", 162 sym_name(np), sym_driver_setup.settle_delay); 163 } 164 165 /* 166 * Choose the more appropriate CAM status if 167 * the IO encountered an extended error. 168 */ 169 static int sym_xerr_cam_status(int cam_status, int x_status) 170 { 171 if (x_status) { 172 if (x_status & XE_PARITY_ERR) 173 cam_status = DID_PARITY; 174 else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN)) 175 cam_status = DID_ERROR; 176 else if (x_status & XE_BAD_PHASE) 177 cam_status = DID_ERROR; 178 else 179 cam_status = DID_ERROR; 180 } 181 return cam_status; 182 } 183 184 /* 185 * Build CAM result for a failed or auto-sensed IO. 186 */ 187 void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) 188 { 189 struct scsi_cmnd *cmd = cp->cmd; 190 u_int cam_status, scsi_status, drv_status; 191 192 drv_status = 0; 193 cam_status = DID_OK; 194 scsi_status = cp->ssss_status; 195 196 if (cp->host_flags & HF_SENSE) { 197 scsi_status = cp->sv_scsi_status; 198 resid = cp->sv_resid; 199 if (sym_verbose && cp->sv_xerr_status) 200 sym_print_xerr(cmd, cp->sv_xerr_status); 201 if (cp->host_status == HS_COMPLETE && 202 cp->ssss_status == S_GOOD && 203 cp->xerr_status == 0) { 204 cam_status = sym_xerr_cam_status(DID_OK, 205 cp->sv_xerr_status); 206 drv_status = DRIVER_SENSE; 207 /* 208 * Bounce back the sense data to user. 209 */ 210 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 211 memcpy(cmd->sense_buffer, cp->sns_bbuf, 212 min(SCSI_SENSE_BUFFERSIZE, SYM_SNS_BBUF_LEN)); 213 #if 0 214 /* 215 * If the device reports a UNIT ATTENTION condition 216 * due to a RESET condition, we should consider all 217 * disconnect CCBs for this unit as aborted. 218 */ 219 if (1) { 220 u_char *p; 221 p = (u_char *) cmd->sense_data; 222 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29) 223 sym_clear_tasks(np, DID_ABORT, 224 cp->target,cp->lun, -1); 225 } 226 #endif 227 } else { 228 /* 229 * Error return from our internal request sense. This 230 * is bad: we must clear the contingent allegiance 231 * condition otherwise the device will always return 232 * BUSY. Use a big stick. 233 */ 234 sym_reset_scsi_target(np, cmd->device->id); 235 cam_status = DID_ERROR; 236 } 237 } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */ 238 cam_status = DID_OK; 239 else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */ 240 cam_status = DID_NO_CONNECT; 241 else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/ 242 cam_status = DID_ERROR; 243 else { /* Extended error */ 244 if (sym_verbose) { 245 sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n", 246 cp->host_status, cp->ssss_status, 247 cp->xerr_status); 248 } 249 /* 250 * Set the most appropriate value for CAM status. 251 */ 252 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status); 253 } 254 scsi_set_resid(cmd, resid); 255 cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status; 256 } 257 258 static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd) 259 { 260 int segment; 261 int use_sg; 262 263 cp->data_len = 0; 264 265 use_sg = scsi_dma_map(cmd); 266 if (use_sg > 0) { 267 struct scatterlist *sg; 268 struct sym_tcb *tp = &np->target[cp->target]; 269 struct sym_tblmove *data; 270 271 if (use_sg > SYM_CONF_MAX_SG) { 272 scsi_dma_unmap(cmd); 273 return -1; 274 } 275 276 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg]; 277 278 scsi_for_each_sg(cmd, sg, use_sg, segment) { 279 dma_addr_t baddr = sg_dma_address(sg); 280 unsigned int len = sg_dma_len(sg); 281 282 if ((len & 1) && (tp->head.wval & EWS)) { 283 len++; 284 cp->odd_byte_adjustment++; 285 } 286 287 sym_build_sge(np, &data[segment], baddr, len); 288 cp->data_len += len; 289 } 290 } else { 291 segment = -2; 292 } 293 294 return segment; 295 } 296 297 /* 298 * Queue a SCSI command. 299 */ 300 static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd) 301 { 302 struct scsi_device *sdev = cmd->device; 303 struct sym_tcb *tp; 304 struct sym_lcb *lp; 305 struct sym_ccb *cp; 306 int order; 307 308 /* 309 * Retrieve the target descriptor. 310 */ 311 tp = &np->target[sdev->id]; 312 313 /* 314 * Select tagged/untagged. 315 */ 316 lp = sym_lp(tp, sdev->lun); 317 order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0; 318 319 /* 320 * Queue the SCSI IO. 321 */ 322 cp = sym_get_ccb(np, cmd, order); 323 if (!cp) 324 return 1; /* Means resource shortage */ 325 sym_queue_scsiio(np, cmd, cp); 326 return 0; 327 } 328 329 /* 330 * Setup buffers and pointers that address the CDB. 331 */ 332 static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) 333 { 334 memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len); 335 336 cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]); 337 cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len); 338 339 return 0; 340 } 341 342 /* 343 * Setup pointers that address the data and start the I/O. 344 */ 345 int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) 346 { 347 u32 lastp, goalp; 348 int dir; 349 350 /* 351 * Build the CDB. 352 */ 353 if (sym_setup_cdb(np, cmd, cp)) 354 goto out_abort; 355 356 /* 357 * No direction means no data. 358 */ 359 dir = cmd->sc_data_direction; 360 if (dir != DMA_NONE) { 361 cp->segments = sym_scatter(np, cp, cmd); 362 if (cp->segments < 0) { 363 sym_set_cam_status(cmd, DID_ERROR); 364 goto out_abort; 365 } 366 367 /* 368 * No segments means no data. 369 */ 370 if (!cp->segments) 371 dir = DMA_NONE; 372 } else { 373 cp->data_len = 0; 374 cp->segments = 0; 375 } 376 377 /* 378 * Set the data pointer. 379 */ 380 switch (dir) { 381 case DMA_BIDIRECTIONAL: 382 scmd_printk(KERN_INFO, cmd, "got DMA_BIDIRECTIONAL command"); 383 sym_set_cam_status(cmd, DID_ERROR); 384 goto out_abort; 385 case DMA_TO_DEVICE: 386 goalp = SCRIPTA_BA(np, data_out2) + 8; 387 lastp = goalp - 8 - (cp->segments * (2*4)); 388 break; 389 case DMA_FROM_DEVICE: 390 cp->host_flags |= HF_DATA_IN; 391 goalp = SCRIPTA_BA(np, data_in2) + 8; 392 lastp = goalp - 8 - (cp->segments * (2*4)); 393 break; 394 case DMA_NONE: 395 default: 396 lastp = goalp = SCRIPTB_BA(np, no_data); 397 break; 398 } 399 400 /* 401 * Set all pointers values needed by SCRIPTS. 402 */ 403 cp->phys.head.lastp = cpu_to_scr(lastp); 404 cp->phys.head.savep = cpu_to_scr(lastp); 405 cp->startp = cp->phys.head.savep; 406 cp->goalp = cpu_to_scr(goalp); 407 408 /* 409 * When `#ifed 1', the code below makes the driver 410 * panic on the first attempt to write to a SCSI device. 411 * It is the first test we want to do after a driver 412 * change that does not seem obviously safe. :) 413 */ 414 #if 0 415 switch (cp->cdb_buf[0]) { 416 case 0x0A: case 0x2A: case 0xAA: 417 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n"); 418 break; 419 default: 420 break; 421 } 422 #endif 423 424 /* 425 * activate this job. 426 */ 427 sym_put_start_queue(np, cp); 428 return 0; 429 430 out_abort: 431 sym_free_ccb(np, cp); 432 sym_xpt_done(np, cmd); 433 return 0; 434 } 435 436 437 /* 438 * timer daemon. 439 * 440 * Misused to keep the driver running when 441 * interrupts are not configured correctly. 442 */ 443 static void sym_timer(struct sym_hcb *np) 444 { 445 unsigned long thistime = jiffies; 446 447 /* 448 * Restart the timer. 449 */ 450 np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL; 451 add_timer(&np->s.timer); 452 453 /* 454 * If we are resetting the ncr, wait for settle_time before 455 * clearing it. Then command processing will be resumed. 456 */ 457 if (np->s.settle_time_valid) { 458 if (time_before_eq(np->s.settle_time, thistime)) { 459 if (sym_verbose >= 2 ) 460 printk("%s: command processing resumed\n", 461 sym_name(np)); 462 np->s.settle_time_valid = 0; 463 } 464 return; 465 } 466 467 /* 468 * Nothing to do for now, but that may come. 469 */ 470 if (np->s.lasttime + 4*HZ < thistime) { 471 np->s.lasttime = thistime; 472 } 473 474 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS 475 /* 476 * Some way-broken PCI bridges may lead to 477 * completions being lost when the clearing 478 * of the INTFLY flag by the CPU occurs 479 * concurrently with the chip raising this flag. 480 * If this ever happen, lost completions will 481 * be reaped here. 482 */ 483 sym_wakeup_done(np); 484 #endif 485 } 486 487 488 /* 489 * PCI BUS error handler. 490 */ 491 void sym_log_bus_error(struct Scsi_Host *shost) 492 { 493 struct sym_data *sym_data = shost_priv(shost); 494 struct pci_dev *pdev = sym_data->pdev; 495 unsigned short pci_sts; 496 pci_read_config_word(pdev, PCI_STATUS, &pci_sts); 497 if (pci_sts & 0xf900) { 498 pci_write_config_word(pdev, PCI_STATUS, pci_sts); 499 shost_printk(KERN_WARNING, shost, 500 "PCI bus error: status = 0x%04x\n", pci_sts & 0xf900); 501 } 502 } 503 504 /* 505 * queuecommand method. Entered with the host adapter lock held and 506 * interrupts disabled. 507 */ 508 static int sym53c8xx_queue_command_lck(struct scsi_cmnd *cmd, 509 void (*done)(struct scsi_cmnd *)) 510 { 511 struct sym_hcb *np = SYM_SOFTC_PTR(cmd); 512 struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd); 513 int sts = 0; 514 515 cmd->scsi_done = done; 516 memset(ucp, 0, sizeof(*ucp)); 517 518 /* 519 * Shorten our settle_time if needed for 520 * this command not to time out. 521 */ 522 if (np->s.settle_time_valid && cmd->request->timeout) { 523 unsigned long tlimit = jiffies + cmd->request->timeout; 524 tlimit -= SYM_CONF_TIMER_INTERVAL*2; 525 if (time_after(np->s.settle_time, tlimit)) { 526 np->s.settle_time = tlimit; 527 } 528 } 529 530 if (np->s.settle_time_valid) 531 return SCSI_MLQUEUE_HOST_BUSY; 532 533 sts = sym_queue_command(np, cmd); 534 if (sts) 535 return SCSI_MLQUEUE_HOST_BUSY; 536 return 0; 537 } 538 539 static DEF_SCSI_QCMD(sym53c8xx_queue_command) 540 541 /* 542 * Linux entry point of the interrupt handler. 543 */ 544 static irqreturn_t sym53c8xx_intr(int irq, void *dev_id) 545 { 546 struct Scsi_Host *shost = dev_id; 547 struct sym_data *sym_data = shost_priv(shost); 548 irqreturn_t result; 549 550 /* Avoid spinloop trying to handle interrupts on frozen device */ 551 if (pci_channel_offline(sym_data->pdev)) 552 return IRQ_NONE; 553 554 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("["); 555 556 spin_lock(shost->host_lock); 557 result = sym_interrupt(shost); 558 spin_unlock(shost->host_lock); 559 560 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n"); 561 562 return result; 563 } 564 565 /* 566 * Linux entry point of the timer handler 567 */ 568 static void sym53c8xx_timer(unsigned long npref) 569 { 570 struct sym_hcb *np = (struct sym_hcb *)npref; 571 unsigned long flags; 572 573 spin_lock_irqsave(np->s.host->host_lock, flags); 574 sym_timer(np); 575 spin_unlock_irqrestore(np->s.host->host_lock, flags); 576 } 577 578 579 /* 580 * What the eh thread wants us to perform. 581 */ 582 #define SYM_EH_ABORT 0 583 #define SYM_EH_DEVICE_RESET 1 584 #define SYM_EH_BUS_RESET 2 585 #define SYM_EH_HOST_RESET 3 586 587 /* 588 * Generic method for our eh processing. 589 * The 'op' argument tells what we have to do. 590 */ 591 static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd) 592 { 593 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 594 struct Scsi_Host *shost = cmd->device->host; 595 struct sym_data *sym_data = shost_priv(shost); 596 struct pci_dev *pdev = sym_data->pdev; 597 struct sym_hcb *np = sym_data->ncb; 598 SYM_QUEHEAD *qp; 599 int cmd_queued = 0; 600 int sts = -1; 601 struct completion eh_done; 602 603 scmd_printk(KERN_WARNING, cmd, "%s operation started\n", opname); 604 605 /* We may be in an error condition because the PCI bus 606 * went down. In this case, we need to wait until the 607 * PCI bus is reset, the card is reset, and only then 608 * proceed with the scsi error recovery. There's no 609 * point in hurrying; take a leisurely wait. 610 */ 611 #define WAIT_FOR_PCI_RECOVERY 35 612 if (pci_channel_offline(pdev)) { 613 int finished_reset = 0; 614 init_completion(&eh_done); 615 spin_lock_irq(shost->host_lock); 616 /* Make sure we didn't race */ 617 if (pci_channel_offline(pdev)) { 618 BUG_ON(sym_data->io_reset); 619 sym_data->io_reset = &eh_done; 620 } else { 621 finished_reset = 1; 622 } 623 spin_unlock_irq(shost->host_lock); 624 if (!finished_reset) 625 finished_reset = wait_for_completion_timeout 626 (sym_data->io_reset, 627 WAIT_FOR_PCI_RECOVERY*HZ); 628 spin_lock_irq(shost->host_lock); 629 sym_data->io_reset = NULL; 630 spin_unlock_irq(shost->host_lock); 631 if (!finished_reset) 632 return SCSI_FAILED; 633 } 634 635 spin_lock_irq(shost->host_lock); 636 /* This one is queued in some place -> to wait for completion */ 637 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { 638 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); 639 if (cp->cmd == cmd) { 640 cmd_queued = 1; 641 break; 642 } 643 } 644 645 /* Try to proceed the operation we have been asked for */ 646 sts = -1; 647 switch(op) { 648 case SYM_EH_ABORT: 649 sts = sym_abort_scsiio(np, cmd, 1); 650 break; 651 case SYM_EH_DEVICE_RESET: 652 sts = sym_reset_scsi_target(np, cmd->device->id); 653 break; 654 case SYM_EH_BUS_RESET: 655 sym_reset_scsi_bus(np, 1); 656 sts = 0; 657 break; 658 case SYM_EH_HOST_RESET: 659 sym_reset_scsi_bus(np, 0); 660 sym_start_up(shost, 1); 661 sts = 0; 662 break; 663 default: 664 break; 665 } 666 667 /* On error, restore everything and cross fingers :) */ 668 if (sts) 669 cmd_queued = 0; 670 671 if (cmd_queued) { 672 init_completion(&eh_done); 673 ucmd->eh_done = &eh_done; 674 spin_unlock_irq(shost->host_lock); 675 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) { 676 ucmd->eh_done = NULL; 677 sts = -2; 678 } 679 } else { 680 spin_unlock_irq(shost->host_lock); 681 } 682 683 dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname, 684 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); 685 return sts ? SCSI_FAILED : SCSI_SUCCESS; 686 } 687 688 689 /* 690 * Error handlers called from the eh thread (one thread per HBA). 691 */ 692 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd) 693 { 694 return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd); 695 } 696 697 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd) 698 { 699 return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd); 700 } 701 702 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd) 703 { 704 return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd); 705 } 706 707 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd) 708 { 709 return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd); 710 } 711 712 /* 713 * Tune device queuing depth, according to various limits. 714 */ 715 static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags) 716 { 717 struct sym_lcb *lp = sym_lp(tp, lun); 718 u_short oldtags; 719 720 if (!lp) 721 return; 722 723 oldtags = lp->s.reqtags; 724 725 if (reqtags > lp->s.scdev_depth) 726 reqtags = lp->s.scdev_depth; 727 728 lp->s.reqtags = reqtags; 729 730 if (reqtags != oldtags) { 731 dev_info(&tp->starget->dev, 732 "tagged command queuing %s, command queue depth %d.\n", 733 lp->s.reqtags ? "enabled" : "disabled", reqtags); 734 } 735 } 736 737 static int sym53c8xx_slave_alloc(struct scsi_device *sdev) 738 { 739 struct sym_hcb *np = sym_get_hcb(sdev->host); 740 struct sym_tcb *tp = &np->target[sdev->id]; 741 struct sym_lcb *lp; 742 unsigned long flags; 743 int error; 744 745 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN) 746 return -ENXIO; 747 748 spin_lock_irqsave(np->s.host->host_lock, flags); 749 750 /* 751 * Fail the device init if the device is flagged NOSCAN at BOOT in 752 * the NVRAM. This may speed up boot and maintain coherency with 753 * BIOS device numbering. Clearing the flag allows the user to 754 * rescan skipped devices later. We also return an error for 755 * devices not flagged for SCAN LUNS in the NVRAM since some single 756 * lun devices behave badly when asked for a non zero LUN. 757 */ 758 759 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) { 760 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED; 761 starget_printk(KERN_INFO, sdev->sdev_target, 762 "Scan at boot disabled in NVRAM\n"); 763 error = -ENXIO; 764 goto out; 765 } 766 767 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) { 768 if (sdev->lun != 0) { 769 error = -ENXIO; 770 goto out; 771 } 772 starget_printk(KERN_INFO, sdev->sdev_target, 773 "Multiple LUNs disabled in NVRAM\n"); 774 } 775 776 lp = sym_alloc_lcb(np, sdev->id, sdev->lun); 777 if (!lp) { 778 error = -ENOMEM; 779 goto out; 780 } 781 if (tp->nlcb == 1) 782 tp->starget = sdev->sdev_target; 783 784 spi_min_period(tp->starget) = tp->usr_period; 785 spi_max_width(tp->starget) = tp->usr_width; 786 787 error = 0; 788 out: 789 spin_unlock_irqrestore(np->s.host->host_lock, flags); 790 791 return error; 792 } 793 794 /* 795 * Linux entry point for device queue sizing. 796 */ 797 static int sym53c8xx_slave_configure(struct scsi_device *sdev) 798 { 799 struct sym_hcb *np = sym_get_hcb(sdev->host); 800 struct sym_tcb *tp = &np->target[sdev->id]; 801 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 802 int reqtags, depth_to_use; 803 804 /* 805 * Get user flags. 806 */ 807 lp->curr_flags = lp->user_flags; 808 809 /* 810 * Select queue depth from driver setup. 811 * Do not use more than configured by user. 812 * Use at least 1. 813 * Do not use more than our maximum. 814 */ 815 reqtags = sym_driver_setup.max_tag; 816 if (reqtags > tp->usrtags) 817 reqtags = tp->usrtags; 818 if (!sdev->tagged_supported) 819 reqtags = 0; 820 if (reqtags > SYM_CONF_MAX_TAG) 821 reqtags = SYM_CONF_MAX_TAG; 822 depth_to_use = reqtags ? reqtags : 1; 823 scsi_adjust_queue_depth(sdev, 824 sdev->tagged_supported ? MSG_SIMPLE_TAG : 0, 825 depth_to_use); 826 lp->s.scdev_depth = depth_to_use; 827 sym_tune_dev_queuing(tp, sdev->lun, reqtags); 828 829 if (!spi_initial_dv(sdev->sdev_target)) 830 spi_dv_device(sdev); 831 832 return 0; 833 } 834 835 static void sym53c8xx_slave_destroy(struct scsi_device *sdev) 836 { 837 struct sym_hcb *np = sym_get_hcb(sdev->host); 838 struct sym_tcb *tp = &np->target[sdev->id]; 839 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 840 unsigned long flags; 841 842 spin_lock_irqsave(np->s.host->host_lock, flags); 843 844 if (lp->busy_itlq || lp->busy_itl) { 845 /* 846 * This really shouldn't happen, but we can't return an error 847 * so let's try to stop all on-going I/O. 848 */ 849 starget_printk(KERN_WARNING, tp->starget, 850 "Removing busy LCB (%d)\n", sdev->lun); 851 sym_reset_scsi_bus(np, 1); 852 } 853 854 if (sym_free_lcb(np, sdev->id, sdev->lun) == 0) { 855 /* 856 * It was the last unit for this target. 857 */ 858 tp->head.sval = 0; 859 tp->head.wval = np->rv_scntl3; 860 tp->head.uval = 0; 861 tp->tgoal.check_nego = 1; 862 tp->starget = NULL; 863 } 864 865 spin_unlock_irqrestore(np->s.host->host_lock, flags); 866 } 867 868 /* 869 * Linux entry point for info() function 870 */ 871 static const char *sym53c8xx_info (struct Scsi_Host *host) 872 { 873 return SYM_DRIVER_NAME; 874 } 875 876 877 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 878 /* 879 * Proc file system stuff 880 * 881 * A read operation returns adapter information. 882 * A write operation is a control command. 883 * The string is parsed in the driver code and the command is passed 884 * to the sym_usercmd() function. 885 */ 886 887 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 888 889 struct sym_usrcmd { 890 u_long target; 891 u_long lun; 892 u_long data; 893 u_long cmd; 894 }; 895 896 #define UC_SETSYNC 10 897 #define UC_SETTAGS 11 898 #define UC_SETDEBUG 12 899 #define UC_SETWIDE 14 900 #define UC_SETFLAG 15 901 #define UC_SETVERBOSE 17 902 #define UC_RESETDEV 18 903 #define UC_CLEARDEV 19 904 905 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc) 906 { 907 struct sym_tcb *tp; 908 int t, l; 909 910 switch (uc->cmd) { 911 case 0: return; 912 913 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 914 case UC_SETDEBUG: 915 sym_debug_flags = uc->data; 916 break; 917 #endif 918 case UC_SETVERBOSE: 919 np->verbose = uc->data; 920 break; 921 default: 922 /* 923 * We assume that other commands apply to targets. 924 * This should always be the case and avoid the below 925 * 4 lines to be repeated 6 times. 926 */ 927 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) { 928 if (!((uc->target >> t) & 1)) 929 continue; 930 tp = &np->target[t]; 931 if (!tp->nlcb) 932 continue; 933 934 switch (uc->cmd) { 935 936 case UC_SETSYNC: 937 if (!uc->data || uc->data >= 255) { 938 tp->tgoal.iu = tp->tgoal.dt = 939 tp->tgoal.qas = 0; 940 tp->tgoal.offset = 0; 941 } else if (uc->data <= 9 && np->minsync_dt) { 942 if (uc->data < np->minsync_dt) 943 uc->data = np->minsync_dt; 944 tp->tgoal.iu = tp->tgoal.dt = 945 tp->tgoal.qas = 1; 946 tp->tgoal.width = 1; 947 tp->tgoal.period = uc->data; 948 tp->tgoal.offset = np->maxoffs_dt; 949 } else { 950 if (uc->data < np->minsync) 951 uc->data = np->minsync; 952 tp->tgoal.iu = tp->tgoal.dt = 953 tp->tgoal.qas = 0; 954 tp->tgoal.period = uc->data; 955 tp->tgoal.offset = np->maxoffs; 956 } 957 tp->tgoal.check_nego = 1; 958 break; 959 case UC_SETWIDE: 960 tp->tgoal.width = uc->data ? 1 : 0; 961 tp->tgoal.check_nego = 1; 962 break; 963 case UC_SETTAGS: 964 for (l = 0; l < SYM_CONF_MAX_LUN; l++) 965 sym_tune_dev_queuing(tp, l, uc->data); 966 break; 967 case UC_RESETDEV: 968 tp->to_reset = 1; 969 np->istat_sem = SEM; 970 OUTB(np, nc_istat, SIGP|SEM); 971 break; 972 case UC_CLEARDEV: 973 for (l = 0; l < SYM_CONF_MAX_LUN; l++) { 974 struct sym_lcb *lp = sym_lp(tp, l); 975 if (lp) lp->to_clear = 1; 976 } 977 np->istat_sem = SEM; 978 OUTB(np, nc_istat, SIGP|SEM); 979 break; 980 case UC_SETFLAG: 981 tp->usrflags = uc->data; 982 break; 983 } 984 } 985 break; 986 } 987 } 988 989 static int sym_skip_spaces(char *ptr, int len) 990 { 991 int cnt, c; 992 993 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--); 994 995 return (len - cnt); 996 } 997 998 static int get_int_arg(char *ptr, int len, u_long *pv) 999 { 1000 char *end; 1001 1002 *pv = simple_strtoul(ptr, &end, 10); 1003 return (end - ptr); 1004 } 1005 1006 static int is_keyword(char *ptr, int len, char *verb) 1007 { 1008 int verb_len = strlen(verb); 1009 1010 if (len >= verb_len && !memcmp(verb, ptr, verb_len)) 1011 return verb_len; 1012 else 1013 return 0; 1014 } 1015 1016 #define SKIP_SPACES(ptr, len) \ 1017 if ((arg_len = sym_skip_spaces(ptr, len)) < 1) \ 1018 return -EINVAL; \ 1019 ptr += arg_len; len -= arg_len; 1020 1021 #define GET_INT_ARG(ptr, len, v) \ 1022 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \ 1023 return -EINVAL; \ 1024 ptr += arg_len; len -= arg_len; 1025 1026 1027 /* 1028 * Parse a control command 1029 */ 1030 1031 static int sym_user_command(struct Scsi_Host *shost, char *buffer, int length) 1032 { 1033 struct sym_hcb *np = sym_get_hcb(shost); 1034 char *ptr = buffer; 1035 int len = length; 1036 struct sym_usrcmd cmd, *uc = &cmd; 1037 int arg_len; 1038 u_long target; 1039 1040 memset(uc, 0, sizeof(*uc)); 1041 1042 if (len > 0 && ptr[len-1] == '\n') 1043 --len; 1044 1045 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0) 1046 uc->cmd = UC_SETSYNC; 1047 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0) 1048 uc->cmd = UC_SETTAGS; 1049 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0) 1050 uc->cmd = UC_SETVERBOSE; 1051 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0) 1052 uc->cmd = UC_SETWIDE; 1053 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1054 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0) 1055 uc->cmd = UC_SETDEBUG; 1056 #endif 1057 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0) 1058 uc->cmd = UC_SETFLAG; 1059 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0) 1060 uc->cmd = UC_RESETDEV; 1061 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0) 1062 uc->cmd = UC_CLEARDEV; 1063 else 1064 arg_len = 0; 1065 1066 #ifdef DEBUG_PROC_INFO 1067 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd); 1068 #endif 1069 1070 if (!arg_len) 1071 return -EINVAL; 1072 ptr += arg_len; len -= arg_len; 1073 1074 switch(uc->cmd) { 1075 case UC_SETSYNC: 1076 case UC_SETTAGS: 1077 case UC_SETWIDE: 1078 case UC_SETFLAG: 1079 case UC_RESETDEV: 1080 case UC_CLEARDEV: 1081 SKIP_SPACES(ptr, len); 1082 if ((arg_len = is_keyword(ptr, len, "all")) != 0) { 1083 ptr += arg_len; len -= arg_len; 1084 uc->target = ~0; 1085 } else { 1086 GET_INT_ARG(ptr, len, target); 1087 uc->target = (1<<target); 1088 #ifdef DEBUG_PROC_INFO 1089 printk("sym_user_command: target=%ld\n", target); 1090 #endif 1091 } 1092 break; 1093 } 1094 1095 switch(uc->cmd) { 1096 case UC_SETVERBOSE: 1097 case UC_SETSYNC: 1098 case UC_SETTAGS: 1099 case UC_SETWIDE: 1100 SKIP_SPACES(ptr, len); 1101 GET_INT_ARG(ptr, len, uc->data); 1102 #ifdef DEBUG_PROC_INFO 1103 printk("sym_user_command: data=%ld\n", uc->data); 1104 #endif 1105 break; 1106 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1107 case UC_SETDEBUG: 1108 while (len > 0) { 1109 SKIP_SPACES(ptr, len); 1110 if ((arg_len = is_keyword(ptr, len, "alloc"))) 1111 uc->data |= DEBUG_ALLOC; 1112 else if ((arg_len = is_keyword(ptr, len, "phase"))) 1113 uc->data |= DEBUG_PHASE; 1114 else if ((arg_len = is_keyword(ptr, len, "queue"))) 1115 uc->data |= DEBUG_QUEUE; 1116 else if ((arg_len = is_keyword(ptr, len, "result"))) 1117 uc->data |= DEBUG_RESULT; 1118 else if ((arg_len = is_keyword(ptr, len, "scatter"))) 1119 uc->data |= DEBUG_SCATTER; 1120 else if ((arg_len = is_keyword(ptr, len, "script"))) 1121 uc->data |= DEBUG_SCRIPT; 1122 else if ((arg_len = is_keyword(ptr, len, "tiny"))) 1123 uc->data |= DEBUG_TINY; 1124 else if ((arg_len = is_keyword(ptr, len, "timing"))) 1125 uc->data |= DEBUG_TIMING; 1126 else if ((arg_len = is_keyword(ptr, len, "nego"))) 1127 uc->data |= DEBUG_NEGO; 1128 else if ((arg_len = is_keyword(ptr, len, "tags"))) 1129 uc->data |= DEBUG_TAGS; 1130 else if ((arg_len = is_keyword(ptr, len, "pointer"))) 1131 uc->data |= DEBUG_POINTER; 1132 else 1133 return -EINVAL; 1134 ptr += arg_len; len -= arg_len; 1135 } 1136 #ifdef DEBUG_PROC_INFO 1137 printk("sym_user_command: data=%ld\n", uc->data); 1138 #endif 1139 break; 1140 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */ 1141 case UC_SETFLAG: 1142 while (len > 0) { 1143 SKIP_SPACES(ptr, len); 1144 if ((arg_len = is_keyword(ptr, len, "no_disc"))) 1145 uc->data &= ~SYM_DISC_ENABLED; 1146 else 1147 return -EINVAL; 1148 ptr += arg_len; len -= arg_len; 1149 } 1150 break; 1151 default: 1152 break; 1153 } 1154 1155 if (len) 1156 return -EINVAL; 1157 else { 1158 unsigned long flags; 1159 1160 spin_lock_irqsave(shost->host_lock, flags); 1161 sym_exec_user_command(np, uc); 1162 spin_unlock_irqrestore(shost->host_lock, flags); 1163 } 1164 return length; 1165 } 1166 1167 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */ 1168 1169 1170 #ifdef SYM_LINUX_USER_INFO_SUPPORT 1171 /* 1172 * Informations through the proc file system. 1173 */ 1174 struct info_str { 1175 char *buffer; 1176 int length; 1177 int offset; 1178 int pos; 1179 }; 1180 1181 static void copy_mem_info(struct info_str *info, char *data, int len) 1182 { 1183 if (info->pos + len > info->length) 1184 len = info->length - info->pos; 1185 1186 if (info->pos + len < info->offset) { 1187 info->pos += len; 1188 return; 1189 } 1190 if (info->pos < info->offset) { 1191 data += (info->offset - info->pos); 1192 len -= (info->offset - info->pos); 1193 } 1194 1195 if (len > 0) { 1196 memcpy(info->buffer + info->pos, data, len); 1197 info->pos += len; 1198 } 1199 } 1200 1201 static int copy_info(struct info_str *info, char *fmt, ...) 1202 { 1203 va_list args; 1204 char buf[81]; 1205 int len; 1206 1207 va_start(args, fmt); 1208 len = vsprintf(buf, fmt, args); 1209 va_end(args); 1210 1211 copy_mem_info(info, buf, len); 1212 return len; 1213 } 1214 1215 /* 1216 * Copy formatted information into the input buffer. 1217 */ 1218 static int sym_host_info(struct Scsi_Host *shost, char *ptr, off_t offset, int len) 1219 { 1220 struct sym_data *sym_data = shost_priv(shost); 1221 struct pci_dev *pdev = sym_data->pdev; 1222 struct sym_hcb *np = sym_data->ncb; 1223 struct info_str info; 1224 1225 info.buffer = ptr; 1226 info.length = len; 1227 info.offset = offset; 1228 info.pos = 0; 1229 1230 copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, " 1231 "revision id 0x%x\n", np->s.chip_name, 1232 pdev->device, pdev->revision); 1233 copy_info(&info, "At PCI address %s, IRQ %u\n", 1234 pci_name(pdev), pdev->irq); 1235 copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n", 1236 (int) (np->minsync_dt ? np->minsync_dt : np->minsync), 1237 np->maxwide ? "Wide" : "Narrow", 1238 np->minsync_dt ? ", DT capable" : ""); 1239 1240 copy_info(&info, "Max. started commands %d, " 1241 "max. commands per LUN %d\n", 1242 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG); 1243 1244 return info.pos > info.offset? info.pos - info.offset : 0; 1245 } 1246 #endif /* SYM_LINUX_USER_INFO_SUPPORT */ 1247 1248 /* 1249 * Entry point of the scsi proc fs of the driver. 1250 * - func = 0 means read (returns adapter infos) 1251 * - func = 1 means write (not yet merget from sym53c8xx) 1252 */ 1253 static int sym53c8xx_proc_info(struct Scsi_Host *shost, char *buffer, 1254 char **start, off_t offset, int length, int func) 1255 { 1256 int retv; 1257 1258 if (func) { 1259 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 1260 retv = sym_user_command(shost, buffer, length); 1261 #else 1262 retv = -EINVAL; 1263 #endif 1264 } else { 1265 if (start) 1266 *start = buffer; 1267 #ifdef SYM_LINUX_USER_INFO_SUPPORT 1268 retv = sym_host_info(shost, buffer, offset, length); 1269 #else 1270 retv = -EINVAL; 1271 #endif 1272 } 1273 1274 return retv; 1275 } 1276 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */ 1277 1278 /* 1279 * Free resources claimed by sym_iomap_device(). Note that 1280 * sym_free_resources() should be used instead of this function after calling 1281 * sym_attach(). 1282 */ 1283 static void __devinit 1284 sym_iounmap_device(struct sym_device *device) 1285 { 1286 if (device->s.ioaddr) 1287 pci_iounmap(device->pdev, device->s.ioaddr); 1288 if (device->s.ramaddr) 1289 pci_iounmap(device->pdev, device->s.ramaddr); 1290 } 1291 1292 /* 1293 * Free controller resources. 1294 */ 1295 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev, 1296 int do_free_irq) 1297 { 1298 /* 1299 * Free O/S specific resources. 1300 */ 1301 if (do_free_irq) 1302 free_irq(pdev->irq, np->s.host); 1303 if (np->s.ioaddr) 1304 pci_iounmap(pdev, np->s.ioaddr); 1305 if (np->s.ramaddr) 1306 pci_iounmap(pdev, np->s.ramaddr); 1307 /* 1308 * Free O/S independent resources. 1309 */ 1310 sym_hcb_free(np); 1311 1312 sym_mfree_dma(np, sizeof(*np), "HCB"); 1313 } 1314 1315 /* 1316 * Host attach and initialisations. 1317 * 1318 * Allocate host data and ncb structure. 1319 * Remap MMIO region. 1320 * Do chip initialization. 1321 * If all is OK, install interrupt handling and 1322 * start the timer daemon. 1323 */ 1324 static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt, 1325 int unit, struct sym_device *dev) 1326 { 1327 struct sym_data *sym_data; 1328 struct sym_hcb *np = NULL; 1329 struct Scsi_Host *shost = NULL; 1330 struct pci_dev *pdev = dev->pdev; 1331 unsigned long flags; 1332 struct sym_fw *fw; 1333 int do_free_irq = 0; 1334 1335 printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n", 1336 unit, dev->chip.name, pdev->revision, pci_name(pdev), 1337 pdev->irq); 1338 1339 /* 1340 * Get the firmware for this chip. 1341 */ 1342 fw = sym_find_firmware(&dev->chip); 1343 if (!fw) 1344 goto attach_failed; 1345 1346 shost = scsi_host_alloc(tpnt, sizeof(*sym_data)); 1347 if (!shost) 1348 goto attach_failed; 1349 sym_data = shost_priv(shost); 1350 1351 /* 1352 * Allocate immediately the host control block, 1353 * since we are only expecting to succeed. :) 1354 * We keep track in the HCB of all the resources that 1355 * are to be released on error. 1356 */ 1357 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB"); 1358 if (!np) 1359 goto attach_failed; 1360 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */ 1361 sym_data->ncb = np; 1362 sym_data->pdev = pdev; 1363 np->s.host = shost; 1364 1365 pci_set_drvdata(pdev, shost); 1366 1367 /* 1368 * Copy some useful infos to the HCB. 1369 */ 1370 np->hcb_ba = vtobus(np); 1371 np->verbose = sym_driver_setup.verbose; 1372 np->s.unit = unit; 1373 np->features = dev->chip.features; 1374 np->clock_divn = dev->chip.nr_divisor; 1375 np->maxoffs = dev->chip.offset_max; 1376 np->maxburst = dev->chip.burst_max; 1377 np->myaddr = dev->host_id; 1378 np->mmio_ba = (u32)dev->mmio_base; 1379 np->ram_ba = (u32)dev->ram_base; 1380 np->s.ioaddr = dev->s.ioaddr; 1381 np->s.ramaddr = dev->s.ramaddr; 1382 1383 /* 1384 * Edit its name. 1385 */ 1386 strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)); 1387 sprintf(np->s.inst_name, "sym%d", np->s.unit); 1388 1389 if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) && 1390 !pci_set_dma_mask(pdev, DMA_DAC_MASK)) { 1391 set_dac(np); 1392 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { 1393 printf_warning("%s: No suitable DMA available\n", sym_name(np)); 1394 goto attach_failed; 1395 } 1396 1397 if (sym_hcb_attach(shost, fw, dev->nvram)) 1398 goto attach_failed; 1399 1400 /* 1401 * Install the interrupt handler. 1402 * If we synchonize the C code with SCRIPTS on interrupt, 1403 * we do not want to share the INTR line at all. 1404 */ 1405 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, 1406 shost)) { 1407 printf_err("%s: request irq %u failure\n", 1408 sym_name(np), pdev->irq); 1409 goto attach_failed; 1410 } 1411 do_free_irq = 1; 1412 1413 /* 1414 * After SCSI devices have been opened, we cannot 1415 * reset the bus safely, so we do it here. 1416 */ 1417 spin_lock_irqsave(shost->host_lock, flags); 1418 if (sym_reset_scsi_bus(np, 0)) 1419 goto reset_failed; 1420 1421 /* 1422 * Start the SCRIPTS. 1423 */ 1424 sym_start_up(shost, 1); 1425 1426 /* 1427 * Start the timer daemon 1428 */ 1429 init_timer(&np->s.timer); 1430 np->s.timer.data = (unsigned long) np; 1431 np->s.timer.function = sym53c8xx_timer; 1432 np->s.lasttime=0; 1433 sym_timer (np); 1434 1435 /* 1436 * Fill Linux host instance structure 1437 * and return success. 1438 */ 1439 shost->max_channel = 0; 1440 shost->this_id = np->myaddr; 1441 shost->max_id = np->maxwide ? 16 : 8; 1442 shost->max_lun = SYM_CONF_MAX_LUN; 1443 shost->unique_id = pci_resource_start(pdev, 0); 1444 shost->cmd_per_lun = SYM_CONF_MAX_TAG; 1445 shost->can_queue = (SYM_CONF_MAX_START-2); 1446 shost->sg_tablesize = SYM_CONF_MAX_SG; 1447 shost->max_cmd_len = 16; 1448 BUG_ON(sym2_transport_template == NULL); 1449 shost->transportt = sym2_transport_template; 1450 1451 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */ 1452 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2) 1453 shost->dma_boundary = 0xFFFFFF; 1454 1455 spin_unlock_irqrestore(shost->host_lock, flags); 1456 1457 return shost; 1458 1459 reset_failed: 1460 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, " 1461 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np)); 1462 spin_unlock_irqrestore(shost->host_lock, flags); 1463 attach_failed: 1464 printf_info("sym%d: giving up ...\n", unit); 1465 if (np) 1466 sym_free_resources(np, pdev, do_free_irq); 1467 else 1468 sym_iounmap_device(dev); 1469 if (shost) 1470 scsi_host_put(shost); 1471 1472 return NULL; 1473 } 1474 1475 1476 /* 1477 * Detect and try to read SYMBIOS and TEKRAM NVRAM. 1478 */ 1479 #if SYM_CONF_NVRAM_SUPPORT 1480 static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1481 { 1482 devp->nvram = nvp; 1483 nvp->type = 0; 1484 1485 sym_read_nvram(devp, nvp); 1486 } 1487 #else 1488 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1489 { 1490 } 1491 #endif /* SYM_CONF_NVRAM_SUPPORT */ 1492 1493 static int __devinit sym_check_supported(struct sym_device *device) 1494 { 1495 struct sym_chip *chip; 1496 struct pci_dev *pdev = device->pdev; 1497 unsigned long io_port = pci_resource_start(pdev, 0); 1498 int i; 1499 1500 /* 1501 * If user excluded this chip, do not initialize it. 1502 * I hate this code so much. Must kill it. 1503 */ 1504 if (io_port) { 1505 for (i = 0 ; i < 8 ; i++) { 1506 if (sym_driver_setup.excludes[i] == io_port) 1507 return -ENODEV; 1508 } 1509 } 1510 1511 /* 1512 * Check if the chip is supported. Then copy the chip description 1513 * to our device structure so we can make it match the actual device 1514 * and options. 1515 */ 1516 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1517 if (!chip) { 1518 dev_info(&pdev->dev, "device not supported\n"); 1519 return -ENODEV; 1520 } 1521 memcpy(&device->chip, chip, sizeof(device->chip)); 1522 1523 return 0; 1524 } 1525 1526 /* 1527 * Ignore Symbios chips controlled by various RAID controllers. 1528 * These controllers set value 0x52414944 at RAM end - 16. 1529 */ 1530 static int __devinit sym_check_raid(struct sym_device *device) 1531 { 1532 unsigned int ram_size, ram_val; 1533 1534 if (!device->s.ramaddr) 1535 return 0; 1536 1537 if (device->chip.features & FE_RAM8K) 1538 ram_size = 8192; 1539 else 1540 ram_size = 4096; 1541 1542 ram_val = readl(device->s.ramaddr + ram_size - 16); 1543 if (ram_val != 0x52414944) 1544 return 0; 1545 1546 dev_info(&device->pdev->dev, 1547 "not initializing, driven by RAID controller.\n"); 1548 return -ENODEV; 1549 } 1550 1551 static int __devinit sym_set_workarounds(struct sym_device *device) 1552 { 1553 struct sym_chip *chip = &device->chip; 1554 struct pci_dev *pdev = device->pdev; 1555 u_short status_reg; 1556 1557 /* 1558 * (ITEM 12 of a DEL about the 896 I haven't yet). 1559 * We must ensure the chip will use WRITE AND INVALIDATE. 1560 * The revision number limit is for now arbitrary. 1561 */ 1562 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) { 1563 chip->features |= (FE_WRIE | FE_CLSE); 1564 } 1565 1566 /* If the chip can do Memory Write Invalidate, enable it */ 1567 if (chip->features & FE_WRIE) { 1568 if (pci_set_mwi(pdev)) 1569 return -ENODEV; 1570 } 1571 1572 /* 1573 * Work around for errant bit in 895A. The 66Mhz 1574 * capable bit is set erroneously. Clear this bit. 1575 * (Item 1 DEL 533) 1576 * 1577 * Make sure Config space and Features agree. 1578 * 1579 * Recall: writes are not normal to status register - 1580 * write a 1 to clear and a 0 to leave unchanged. 1581 * Can only reset bits. 1582 */ 1583 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1584 if (chip->features & FE_66MHZ) { 1585 if (!(status_reg & PCI_STATUS_66MHZ)) 1586 chip->features &= ~FE_66MHZ; 1587 } else { 1588 if (status_reg & PCI_STATUS_66MHZ) { 1589 status_reg = PCI_STATUS_66MHZ; 1590 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1591 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1592 } 1593 } 1594 1595 return 0; 1596 } 1597 1598 /* 1599 * Map HBA registers and on-chip SRAM (if present). 1600 */ 1601 static int __devinit 1602 sym_iomap_device(struct sym_device *device) 1603 { 1604 struct pci_dev *pdev = device->pdev; 1605 struct pci_bus_region bus_addr; 1606 int i = 2; 1607 1608 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]); 1609 device->mmio_base = bus_addr.start; 1610 1611 if (device->chip.features & FE_RAM) { 1612 /* 1613 * If the BAR is 64-bit, resource 2 will be occupied by the 1614 * upper 32 bits 1615 */ 1616 if (!pdev->resource[i].flags) 1617 i++; 1618 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]); 1619 device->ram_base = bus_addr.start; 1620 } 1621 1622 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO 1623 if (device->mmio_base) 1624 device->s.ioaddr = pci_iomap(pdev, 1, 1625 pci_resource_len(pdev, 1)); 1626 #endif 1627 if (!device->s.ioaddr) 1628 device->s.ioaddr = pci_iomap(pdev, 0, 1629 pci_resource_len(pdev, 0)); 1630 if (!device->s.ioaddr) { 1631 dev_err(&pdev->dev, "could not map registers; giving up.\n"); 1632 return -EIO; 1633 } 1634 if (device->ram_base) { 1635 device->s.ramaddr = pci_iomap(pdev, i, 1636 pci_resource_len(pdev, i)); 1637 if (!device->s.ramaddr) { 1638 dev_warn(&pdev->dev, 1639 "could not map SRAM; continuing anyway.\n"); 1640 device->ram_base = 0; 1641 } 1642 } 1643 1644 return 0; 1645 } 1646 1647 /* 1648 * The NCR PQS and PDS cards are constructed as a DEC bridge 1649 * behind which sits a proprietary NCR memory controller and 1650 * either four or two 53c875s as separate devices. We can tell 1651 * if an 875 is part of a PQS/PDS or not since if it is, it will 1652 * be on the same bus as the memory controller. In its usual 1653 * mode of operation, the 875s are slaved to the memory 1654 * controller for all transfers. To operate with the Linux 1655 * driver, the memory controller is disabled and the 875s 1656 * freed to function independently. The only wrinkle is that 1657 * the preset SCSI ID (which may be zero) must be read in from 1658 * a special configuration space register of the 875. 1659 */ 1660 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev) 1661 { 1662 int slot; 1663 u8 tmp; 1664 1665 for (slot = 0; slot < 256; slot++) { 1666 struct pci_dev *memc = pci_get_slot(pdev->bus, slot); 1667 1668 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) { 1669 pci_dev_put(memc); 1670 continue; 1671 } 1672 1673 /* bit 1: allow individual 875 configuration */ 1674 pci_read_config_byte(memc, 0x44, &tmp); 1675 if ((tmp & 0x2) == 0) { 1676 tmp |= 0x2; 1677 pci_write_config_byte(memc, 0x44, tmp); 1678 } 1679 1680 /* bit 2: drive individual 875 interrupts to the bus */ 1681 pci_read_config_byte(memc, 0x45, &tmp); 1682 if ((tmp & 0x4) == 0) { 1683 tmp |= 0x4; 1684 pci_write_config_byte(memc, 0x45, tmp); 1685 } 1686 1687 pci_dev_put(memc); 1688 break; 1689 } 1690 1691 pci_read_config_byte(pdev, 0x84, &tmp); 1692 sym_dev->host_id = tmp; 1693 } 1694 1695 /* 1696 * Called before unloading the module. 1697 * Detach the host. 1698 * We have to free resources and halt the NCR chip. 1699 */ 1700 static int sym_detach(struct Scsi_Host *shost, struct pci_dev *pdev) 1701 { 1702 struct sym_hcb *np = sym_get_hcb(shost); 1703 printk("%s: detaching ...\n", sym_name(np)); 1704 1705 del_timer_sync(&np->s.timer); 1706 1707 /* 1708 * Reset NCR chip. 1709 * We should use sym_soft_reset(), but we don't want to do 1710 * so, since we may not be safe if interrupts occur. 1711 */ 1712 printk("%s: resetting chip\n", sym_name(np)); 1713 OUTB(np, nc_istat, SRST); 1714 INB(np, nc_mbox1); 1715 udelay(10); 1716 OUTB(np, nc_istat, 0); 1717 1718 sym_free_resources(np, pdev, 1); 1719 scsi_host_put(shost); 1720 1721 return 1; 1722 } 1723 1724 /* 1725 * Driver host template. 1726 */ 1727 static struct scsi_host_template sym2_template = { 1728 .module = THIS_MODULE, 1729 .name = "sym53c8xx", 1730 .info = sym53c8xx_info, 1731 .queuecommand = sym53c8xx_queue_command, 1732 .slave_alloc = sym53c8xx_slave_alloc, 1733 .slave_configure = sym53c8xx_slave_configure, 1734 .slave_destroy = sym53c8xx_slave_destroy, 1735 .eh_abort_handler = sym53c8xx_eh_abort_handler, 1736 .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler, 1737 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, 1738 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, 1739 .this_id = 7, 1740 .use_clustering = ENABLE_CLUSTERING, 1741 .max_sectors = 0xFFFF, 1742 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 1743 .proc_info = sym53c8xx_proc_info, 1744 .proc_name = NAME53C8XX, 1745 #endif 1746 }; 1747 1748 static int attach_count; 1749 1750 static int __devinit sym2_probe(struct pci_dev *pdev, 1751 const struct pci_device_id *ent) 1752 { 1753 struct sym_device sym_dev; 1754 struct sym_nvram nvram; 1755 struct Scsi_Host *shost; 1756 int do_iounmap = 0; 1757 int do_disable_device = 1; 1758 1759 memset(&sym_dev, 0, sizeof(sym_dev)); 1760 memset(&nvram, 0, sizeof(nvram)); 1761 sym_dev.pdev = pdev; 1762 sym_dev.host_id = SYM_SETUP_HOST_ID; 1763 1764 if (pci_enable_device(pdev)) 1765 goto leave; 1766 1767 pci_set_master(pdev); 1768 1769 if (pci_request_regions(pdev, NAME53C8XX)) 1770 goto disable; 1771 1772 if (sym_check_supported(&sym_dev)) 1773 goto free; 1774 1775 if (sym_iomap_device(&sym_dev)) 1776 goto free; 1777 do_iounmap = 1; 1778 1779 if (sym_check_raid(&sym_dev)) { 1780 do_disable_device = 0; /* Don't disable the device */ 1781 goto free; 1782 } 1783 1784 if (sym_set_workarounds(&sym_dev)) 1785 goto free; 1786 1787 sym_config_pqs(pdev, &sym_dev); 1788 1789 sym_get_nvram(&sym_dev, &nvram); 1790 1791 do_iounmap = 0; /* Don't sym_iounmap_device() after sym_attach(). */ 1792 shost = sym_attach(&sym2_template, attach_count, &sym_dev); 1793 if (!shost) 1794 goto free; 1795 1796 if (scsi_add_host(shost, &pdev->dev)) 1797 goto detach; 1798 scsi_scan_host(shost); 1799 1800 attach_count++; 1801 1802 return 0; 1803 1804 detach: 1805 sym_detach(pci_get_drvdata(pdev), pdev); 1806 free: 1807 if (do_iounmap) 1808 sym_iounmap_device(&sym_dev); 1809 pci_release_regions(pdev); 1810 disable: 1811 if (do_disable_device) 1812 pci_disable_device(pdev); 1813 leave: 1814 return -ENODEV; 1815 } 1816 1817 static void sym2_remove(struct pci_dev *pdev) 1818 { 1819 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1820 1821 scsi_remove_host(shost); 1822 sym_detach(shost, pdev); 1823 pci_release_regions(pdev); 1824 pci_disable_device(pdev); 1825 1826 attach_count--; 1827 } 1828 1829 /** 1830 * sym2_io_error_detected() - called when PCI error is detected 1831 * @pdev: pointer to PCI device 1832 * @state: current state of the PCI slot 1833 */ 1834 static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev, 1835 enum pci_channel_state state) 1836 { 1837 /* If slot is permanently frozen, turn everything off */ 1838 if (state == pci_channel_io_perm_failure) { 1839 sym2_remove(pdev); 1840 return PCI_ERS_RESULT_DISCONNECT; 1841 } 1842 1843 disable_irq(pdev->irq); 1844 pci_disable_device(pdev); 1845 1846 /* Request that MMIO be enabled, so register dump can be taken. */ 1847 return PCI_ERS_RESULT_CAN_RECOVER; 1848 } 1849 1850 /** 1851 * sym2_io_slot_dump - Enable MMIO and dump debug registers 1852 * @pdev: pointer to PCI device 1853 */ 1854 static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev) 1855 { 1856 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1857 1858 sym_dump_registers(shost); 1859 1860 /* Request a slot reset. */ 1861 return PCI_ERS_RESULT_NEED_RESET; 1862 } 1863 1864 /** 1865 * sym2_reset_workarounds - hardware-specific work-arounds 1866 * 1867 * This routine is similar to sym_set_workarounds(), except 1868 * that, at this point, we already know that the device was 1869 * successfully initialized at least once before, and so most 1870 * of the steps taken there are un-needed here. 1871 */ 1872 static void sym2_reset_workarounds(struct pci_dev *pdev) 1873 { 1874 u_short status_reg; 1875 struct sym_chip *chip; 1876 1877 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1878 1879 /* Work around for errant bit in 895A, in a fashion 1880 * similar to what is done in sym_set_workarounds(). 1881 */ 1882 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1883 if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) { 1884 status_reg = PCI_STATUS_66MHZ; 1885 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1886 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1887 } 1888 } 1889 1890 /** 1891 * sym2_io_slot_reset() - called when the pci bus has been reset. 1892 * @pdev: pointer to PCI device 1893 * 1894 * Restart the card from scratch. 1895 */ 1896 static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev) 1897 { 1898 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1899 struct sym_hcb *np = sym_get_hcb(shost); 1900 1901 printk(KERN_INFO "%s: recovering from a PCI slot reset\n", 1902 sym_name(np)); 1903 1904 if (pci_enable_device(pdev)) { 1905 printk(KERN_ERR "%s: Unable to enable after PCI reset\n", 1906 sym_name(np)); 1907 return PCI_ERS_RESULT_DISCONNECT; 1908 } 1909 1910 pci_set_master(pdev); 1911 enable_irq(pdev->irq); 1912 1913 /* If the chip can do Memory Write Invalidate, enable it */ 1914 if (np->features & FE_WRIE) { 1915 if (pci_set_mwi(pdev)) 1916 return PCI_ERS_RESULT_DISCONNECT; 1917 } 1918 1919 /* Perform work-arounds, analogous to sym_set_workarounds() */ 1920 sym2_reset_workarounds(pdev); 1921 1922 /* Perform host reset only on one instance of the card */ 1923 if (PCI_FUNC(pdev->devfn) == 0) { 1924 if (sym_reset_scsi_bus(np, 0)) { 1925 printk(KERN_ERR "%s: Unable to reset scsi host\n", 1926 sym_name(np)); 1927 return PCI_ERS_RESULT_DISCONNECT; 1928 } 1929 sym_start_up(shost, 1); 1930 } 1931 1932 return PCI_ERS_RESULT_RECOVERED; 1933 } 1934 1935 /** 1936 * sym2_io_resume() - resume normal ops after PCI reset 1937 * @pdev: pointer to PCI device 1938 * 1939 * Called when the error recovery driver tells us that its 1940 * OK to resume normal operation. Use completion to allow 1941 * halted scsi ops to resume. 1942 */ 1943 static void sym2_io_resume(struct pci_dev *pdev) 1944 { 1945 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1946 struct sym_data *sym_data = shost_priv(shost); 1947 1948 spin_lock_irq(shost->host_lock); 1949 if (sym_data->io_reset) 1950 complete_all(sym_data->io_reset); 1951 spin_unlock_irq(shost->host_lock); 1952 } 1953 1954 static void sym2_get_signalling(struct Scsi_Host *shost) 1955 { 1956 struct sym_hcb *np = sym_get_hcb(shost); 1957 enum spi_signal_type type; 1958 1959 switch (np->scsi_mode) { 1960 case SMODE_SE: 1961 type = SPI_SIGNAL_SE; 1962 break; 1963 case SMODE_LVD: 1964 type = SPI_SIGNAL_LVD; 1965 break; 1966 case SMODE_HVD: 1967 type = SPI_SIGNAL_HVD; 1968 break; 1969 default: 1970 type = SPI_SIGNAL_UNKNOWN; 1971 break; 1972 } 1973 spi_signalling(shost) = type; 1974 } 1975 1976 static void sym2_set_offset(struct scsi_target *starget, int offset) 1977 { 1978 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1979 struct sym_hcb *np = sym_get_hcb(shost); 1980 struct sym_tcb *tp = &np->target[starget->id]; 1981 1982 tp->tgoal.offset = offset; 1983 tp->tgoal.check_nego = 1; 1984 } 1985 1986 static void sym2_set_period(struct scsi_target *starget, int period) 1987 { 1988 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1989 struct sym_hcb *np = sym_get_hcb(shost); 1990 struct sym_tcb *tp = &np->target[starget->id]; 1991 1992 /* have to have DT for these transfers, but DT will also 1993 * set width, so check that this is allowed */ 1994 if (period <= np->minsync && spi_width(starget)) 1995 tp->tgoal.dt = 1; 1996 1997 tp->tgoal.period = period; 1998 tp->tgoal.check_nego = 1; 1999 } 2000 2001 static void sym2_set_width(struct scsi_target *starget, int width) 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 /* It is illegal to have DT set on narrow transfers. If DT is 2008 * clear, we must also clear IU and QAS. */ 2009 if (width == 0) 2010 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 2011 2012 tp->tgoal.width = width; 2013 tp->tgoal.check_nego = 1; 2014 } 2015 2016 static void sym2_set_dt(struct scsi_target *starget, int dt) 2017 { 2018 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2019 struct sym_hcb *np = sym_get_hcb(shost); 2020 struct sym_tcb *tp = &np->target[starget->id]; 2021 2022 /* We must clear QAS and IU if DT is clear */ 2023 if (dt) 2024 tp->tgoal.dt = 1; 2025 else 2026 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 2027 tp->tgoal.check_nego = 1; 2028 } 2029 2030 #if 0 2031 static void sym2_set_iu(struct scsi_target *starget, int iu) 2032 { 2033 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2034 struct sym_hcb *np = sym_get_hcb(shost); 2035 struct sym_tcb *tp = &np->target[starget->id]; 2036 2037 if (iu) 2038 tp->tgoal.iu = tp->tgoal.dt = 1; 2039 else 2040 tp->tgoal.iu = 0; 2041 tp->tgoal.check_nego = 1; 2042 } 2043 2044 static void sym2_set_qas(struct scsi_target *starget, int qas) 2045 { 2046 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2047 struct sym_hcb *np = sym_get_hcb(shost); 2048 struct sym_tcb *tp = &np->target[starget->id]; 2049 2050 if (qas) 2051 tp->tgoal.dt = tp->tgoal.qas = 1; 2052 else 2053 tp->tgoal.qas = 0; 2054 tp->tgoal.check_nego = 1; 2055 } 2056 #endif 2057 2058 static struct spi_function_template sym2_transport_functions = { 2059 .set_offset = sym2_set_offset, 2060 .show_offset = 1, 2061 .set_period = sym2_set_period, 2062 .show_period = 1, 2063 .set_width = sym2_set_width, 2064 .show_width = 1, 2065 .set_dt = sym2_set_dt, 2066 .show_dt = 1, 2067 #if 0 2068 .set_iu = sym2_set_iu, 2069 .show_iu = 1, 2070 .set_qas = sym2_set_qas, 2071 .show_qas = 1, 2072 #endif 2073 .get_signalling = sym2_get_signalling, 2074 }; 2075 2076 static struct pci_device_id sym2_id_table[] __devinitdata = { 2077 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810, 2078 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2079 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820, 2080 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2081 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825, 2082 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2083 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815, 2084 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2085 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP, 2086 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2087 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860, 2088 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2089 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510, 2090 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, 2091 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896, 2092 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2093 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895, 2094 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2095 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885, 2096 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2097 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875, 2098 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2099 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510, 2100 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */ 2101 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A, 2102 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2103 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A, 2104 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2105 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33, 2106 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2107 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66, 2108 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2109 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J, 2110 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2111 { 0, } 2112 }; 2113 2114 MODULE_DEVICE_TABLE(pci, sym2_id_table); 2115 2116 static struct pci_error_handlers sym2_err_handler = { 2117 .error_detected = sym2_io_error_detected, 2118 .mmio_enabled = sym2_io_slot_dump, 2119 .slot_reset = sym2_io_slot_reset, 2120 .resume = sym2_io_resume, 2121 }; 2122 2123 static struct pci_driver sym2_driver = { 2124 .name = NAME53C8XX, 2125 .id_table = sym2_id_table, 2126 .probe = sym2_probe, 2127 .remove = sym2_remove, 2128 .err_handler = &sym2_err_handler, 2129 }; 2130 2131 static int __init sym2_init(void) 2132 { 2133 int error; 2134 2135 sym2_setup_params(); 2136 sym2_transport_template = spi_attach_transport(&sym2_transport_functions); 2137 if (!sym2_transport_template) 2138 return -ENODEV; 2139 2140 error = pci_register_driver(&sym2_driver); 2141 if (error) 2142 spi_release_transport(sym2_transport_template); 2143 return error; 2144 } 2145 2146 static void __exit sym2_exit(void) 2147 { 2148 pci_unregister_driver(&sym2_driver); 2149 spi_release_transport(sym2_transport_template); 2150 } 2151 2152 module_init(sym2_init); 2153 module_exit(sym2_exit); 2154