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 /* if slave_alloc returned before allocating a sym_lcb, return */ 843 if (!lp) 844 return; 845 846 spin_lock_irqsave(np->s.host->host_lock, flags); 847 848 if (lp->busy_itlq || lp->busy_itl) { 849 /* 850 * This really shouldn't happen, but we can't return an error 851 * so let's try to stop all on-going I/O. 852 */ 853 starget_printk(KERN_WARNING, tp->starget, 854 "Removing busy LCB (%d)\n", sdev->lun); 855 sym_reset_scsi_bus(np, 1); 856 } 857 858 if (sym_free_lcb(np, sdev->id, sdev->lun) == 0) { 859 /* 860 * It was the last unit for this target. 861 */ 862 tp->head.sval = 0; 863 tp->head.wval = np->rv_scntl3; 864 tp->head.uval = 0; 865 tp->tgoal.check_nego = 1; 866 tp->starget = NULL; 867 } 868 869 spin_unlock_irqrestore(np->s.host->host_lock, flags); 870 } 871 872 /* 873 * Linux entry point for info() function 874 */ 875 static const char *sym53c8xx_info (struct Scsi_Host *host) 876 { 877 return SYM_DRIVER_NAME; 878 } 879 880 881 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 882 /* 883 * Proc file system stuff 884 * 885 * A read operation returns adapter information. 886 * A write operation is a control command. 887 * The string is parsed in the driver code and the command is passed 888 * to the sym_usercmd() function. 889 */ 890 891 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 892 893 struct sym_usrcmd { 894 u_long target; 895 u_long lun; 896 u_long data; 897 u_long cmd; 898 }; 899 900 #define UC_SETSYNC 10 901 #define UC_SETTAGS 11 902 #define UC_SETDEBUG 12 903 #define UC_SETWIDE 14 904 #define UC_SETFLAG 15 905 #define UC_SETVERBOSE 17 906 #define UC_RESETDEV 18 907 #define UC_CLEARDEV 19 908 909 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc) 910 { 911 struct sym_tcb *tp; 912 int t, l; 913 914 switch (uc->cmd) { 915 case 0: return; 916 917 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 918 case UC_SETDEBUG: 919 sym_debug_flags = uc->data; 920 break; 921 #endif 922 case UC_SETVERBOSE: 923 np->verbose = uc->data; 924 break; 925 default: 926 /* 927 * We assume that other commands apply to targets. 928 * This should always be the case and avoid the below 929 * 4 lines to be repeated 6 times. 930 */ 931 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) { 932 if (!((uc->target >> t) & 1)) 933 continue; 934 tp = &np->target[t]; 935 if (!tp->nlcb) 936 continue; 937 938 switch (uc->cmd) { 939 940 case UC_SETSYNC: 941 if (!uc->data || uc->data >= 255) { 942 tp->tgoal.iu = tp->tgoal.dt = 943 tp->tgoal.qas = 0; 944 tp->tgoal.offset = 0; 945 } else if (uc->data <= 9 && np->minsync_dt) { 946 if (uc->data < np->minsync_dt) 947 uc->data = np->minsync_dt; 948 tp->tgoal.iu = tp->tgoal.dt = 949 tp->tgoal.qas = 1; 950 tp->tgoal.width = 1; 951 tp->tgoal.period = uc->data; 952 tp->tgoal.offset = np->maxoffs_dt; 953 } else { 954 if (uc->data < np->minsync) 955 uc->data = np->minsync; 956 tp->tgoal.iu = tp->tgoal.dt = 957 tp->tgoal.qas = 0; 958 tp->tgoal.period = uc->data; 959 tp->tgoal.offset = np->maxoffs; 960 } 961 tp->tgoal.check_nego = 1; 962 break; 963 case UC_SETWIDE: 964 tp->tgoal.width = uc->data ? 1 : 0; 965 tp->tgoal.check_nego = 1; 966 break; 967 case UC_SETTAGS: 968 for (l = 0; l < SYM_CONF_MAX_LUN; l++) 969 sym_tune_dev_queuing(tp, l, uc->data); 970 break; 971 case UC_RESETDEV: 972 tp->to_reset = 1; 973 np->istat_sem = SEM; 974 OUTB(np, nc_istat, SIGP|SEM); 975 break; 976 case UC_CLEARDEV: 977 for (l = 0; l < SYM_CONF_MAX_LUN; l++) { 978 struct sym_lcb *lp = sym_lp(tp, l); 979 if (lp) lp->to_clear = 1; 980 } 981 np->istat_sem = SEM; 982 OUTB(np, nc_istat, SIGP|SEM); 983 break; 984 case UC_SETFLAG: 985 tp->usrflags = uc->data; 986 break; 987 } 988 } 989 break; 990 } 991 } 992 993 static int sym_skip_spaces(char *ptr, int len) 994 { 995 int cnt, c; 996 997 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--); 998 999 return (len - cnt); 1000 } 1001 1002 static int get_int_arg(char *ptr, int len, u_long *pv) 1003 { 1004 char *end; 1005 1006 *pv = simple_strtoul(ptr, &end, 10); 1007 return (end - ptr); 1008 } 1009 1010 static int is_keyword(char *ptr, int len, char *verb) 1011 { 1012 int verb_len = strlen(verb); 1013 1014 if (len >= verb_len && !memcmp(verb, ptr, verb_len)) 1015 return verb_len; 1016 else 1017 return 0; 1018 } 1019 1020 #define SKIP_SPACES(ptr, len) \ 1021 if ((arg_len = sym_skip_spaces(ptr, len)) < 1) \ 1022 return -EINVAL; \ 1023 ptr += arg_len; len -= arg_len; 1024 1025 #define GET_INT_ARG(ptr, len, v) \ 1026 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \ 1027 return -EINVAL; \ 1028 ptr += arg_len; len -= arg_len; 1029 1030 1031 /* 1032 * Parse a control command 1033 */ 1034 1035 static int sym_user_command(struct Scsi_Host *shost, char *buffer, int length) 1036 { 1037 struct sym_hcb *np = sym_get_hcb(shost); 1038 char *ptr = buffer; 1039 int len = length; 1040 struct sym_usrcmd cmd, *uc = &cmd; 1041 int arg_len; 1042 u_long target; 1043 1044 memset(uc, 0, sizeof(*uc)); 1045 1046 if (len > 0 && ptr[len-1] == '\n') 1047 --len; 1048 1049 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0) 1050 uc->cmd = UC_SETSYNC; 1051 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0) 1052 uc->cmd = UC_SETTAGS; 1053 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0) 1054 uc->cmd = UC_SETVERBOSE; 1055 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0) 1056 uc->cmd = UC_SETWIDE; 1057 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1058 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0) 1059 uc->cmd = UC_SETDEBUG; 1060 #endif 1061 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0) 1062 uc->cmd = UC_SETFLAG; 1063 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0) 1064 uc->cmd = UC_RESETDEV; 1065 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0) 1066 uc->cmd = UC_CLEARDEV; 1067 else 1068 arg_len = 0; 1069 1070 #ifdef DEBUG_PROC_INFO 1071 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd); 1072 #endif 1073 1074 if (!arg_len) 1075 return -EINVAL; 1076 ptr += arg_len; len -= arg_len; 1077 1078 switch(uc->cmd) { 1079 case UC_SETSYNC: 1080 case UC_SETTAGS: 1081 case UC_SETWIDE: 1082 case UC_SETFLAG: 1083 case UC_RESETDEV: 1084 case UC_CLEARDEV: 1085 SKIP_SPACES(ptr, len); 1086 if ((arg_len = is_keyword(ptr, len, "all")) != 0) { 1087 ptr += arg_len; len -= arg_len; 1088 uc->target = ~0; 1089 } else { 1090 GET_INT_ARG(ptr, len, target); 1091 uc->target = (1<<target); 1092 #ifdef DEBUG_PROC_INFO 1093 printk("sym_user_command: target=%ld\n", target); 1094 #endif 1095 } 1096 break; 1097 } 1098 1099 switch(uc->cmd) { 1100 case UC_SETVERBOSE: 1101 case UC_SETSYNC: 1102 case UC_SETTAGS: 1103 case UC_SETWIDE: 1104 SKIP_SPACES(ptr, len); 1105 GET_INT_ARG(ptr, len, uc->data); 1106 #ifdef DEBUG_PROC_INFO 1107 printk("sym_user_command: data=%ld\n", uc->data); 1108 #endif 1109 break; 1110 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1111 case UC_SETDEBUG: 1112 while (len > 0) { 1113 SKIP_SPACES(ptr, len); 1114 if ((arg_len = is_keyword(ptr, len, "alloc"))) 1115 uc->data |= DEBUG_ALLOC; 1116 else if ((arg_len = is_keyword(ptr, len, "phase"))) 1117 uc->data |= DEBUG_PHASE; 1118 else if ((arg_len = is_keyword(ptr, len, "queue"))) 1119 uc->data |= DEBUG_QUEUE; 1120 else if ((arg_len = is_keyword(ptr, len, "result"))) 1121 uc->data |= DEBUG_RESULT; 1122 else if ((arg_len = is_keyword(ptr, len, "scatter"))) 1123 uc->data |= DEBUG_SCATTER; 1124 else if ((arg_len = is_keyword(ptr, len, "script"))) 1125 uc->data |= DEBUG_SCRIPT; 1126 else if ((arg_len = is_keyword(ptr, len, "tiny"))) 1127 uc->data |= DEBUG_TINY; 1128 else if ((arg_len = is_keyword(ptr, len, "timing"))) 1129 uc->data |= DEBUG_TIMING; 1130 else if ((arg_len = is_keyword(ptr, len, "nego"))) 1131 uc->data |= DEBUG_NEGO; 1132 else if ((arg_len = is_keyword(ptr, len, "tags"))) 1133 uc->data |= DEBUG_TAGS; 1134 else if ((arg_len = is_keyword(ptr, len, "pointer"))) 1135 uc->data |= DEBUG_POINTER; 1136 else 1137 return -EINVAL; 1138 ptr += arg_len; len -= arg_len; 1139 } 1140 #ifdef DEBUG_PROC_INFO 1141 printk("sym_user_command: data=%ld\n", uc->data); 1142 #endif 1143 break; 1144 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */ 1145 case UC_SETFLAG: 1146 while (len > 0) { 1147 SKIP_SPACES(ptr, len); 1148 if ((arg_len = is_keyword(ptr, len, "no_disc"))) 1149 uc->data &= ~SYM_DISC_ENABLED; 1150 else 1151 return -EINVAL; 1152 ptr += arg_len; len -= arg_len; 1153 } 1154 break; 1155 default: 1156 break; 1157 } 1158 1159 if (len) 1160 return -EINVAL; 1161 else { 1162 unsigned long flags; 1163 1164 spin_lock_irqsave(shost->host_lock, flags); 1165 sym_exec_user_command(np, uc); 1166 spin_unlock_irqrestore(shost->host_lock, flags); 1167 } 1168 return length; 1169 } 1170 1171 #endif /* SYM_LINUX_USER_COMMAND_SUPPORT */ 1172 1173 1174 #ifdef SYM_LINUX_USER_INFO_SUPPORT 1175 /* 1176 * Informations through the proc file system. 1177 */ 1178 struct info_str { 1179 char *buffer; 1180 int length; 1181 int offset; 1182 int pos; 1183 }; 1184 1185 static void copy_mem_info(struct info_str *info, char *data, int len) 1186 { 1187 if (info->pos + len > info->length) 1188 len = info->length - info->pos; 1189 1190 if (info->pos + len < info->offset) { 1191 info->pos += len; 1192 return; 1193 } 1194 if (info->pos < info->offset) { 1195 data += (info->offset - info->pos); 1196 len -= (info->offset - info->pos); 1197 } 1198 1199 if (len > 0) { 1200 memcpy(info->buffer + info->pos, data, len); 1201 info->pos += len; 1202 } 1203 } 1204 1205 static int copy_info(struct info_str *info, char *fmt, ...) 1206 { 1207 va_list args; 1208 char buf[81]; 1209 int len; 1210 1211 va_start(args, fmt); 1212 len = vsprintf(buf, fmt, args); 1213 va_end(args); 1214 1215 copy_mem_info(info, buf, len); 1216 return len; 1217 } 1218 1219 /* 1220 * Copy formatted information into the input buffer. 1221 */ 1222 static int sym_host_info(struct Scsi_Host *shost, char *ptr, off_t offset, int len) 1223 { 1224 struct sym_data *sym_data = shost_priv(shost); 1225 struct pci_dev *pdev = sym_data->pdev; 1226 struct sym_hcb *np = sym_data->ncb; 1227 struct info_str info; 1228 1229 info.buffer = ptr; 1230 info.length = len; 1231 info.offset = offset; 1232 info.pos = 0; 1233 1234 copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, " 1235 "revision id 0x%x\n", np->s.chip_name, 1236 pdev->device, pdev->revision); 1237 copy_info(&info, "At PCI address %s, IRQ %u\n", 1238 pci_name(pdev), pdev->irq); 1239 copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n", 1240 (int) (np->minsync_dt ? np->minsync_dt : np->minsync), 1241 np->maxwide ? "Wide" : "Narrow", 1242 np->minsync_dt ? ", DT capable" : ""); 1243 1244 copy_info(&info, "Max. started commands %d, " 1245 "max. commands per LUN %d\n", 1246 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG); 1247 1248 return info.pos > info.offset? info.pos - info.offset : 0; 1249 } 1250 #endif /* SYM_LINUX_USER_INFO_SUPPORT */ 1251 1252 /* 1253 * Entry point of the scsi proc fs of the driver. 1254 * - func = 0 means read (returns adapter infos) 1255 * - func = 1 means write (not yet merget from sym53c8xx) 1256 */ 1257 static int sym53c8xx_proc_info(struct Scsi_Host *shost, char *buffer, 1258 char **start, off_t offset, int length, int func) 1259 { 1260 int retv; 1261 1262 if (func) { 1263 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT 1264 retv = sym_user_command(shost, buffer, length); 1265 #else 1266 retv = -EINVAL; 1267 #endif 1268 } else { 1269 if (start) 1270 *start = buffer; 1271 #ifdef SYM_LINUX_USER_INFO_SUPPORT 1272 retv = sym_host_info(shost, buffer, offset, length); 1273 #else 1274 retv = -EINVAL; 1275 #endif 1276 } 1277 1278 return retv; 1279 } 1280 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */ 1281 1282 /* 1283 * Free resources claimed by sym_iomap_device(). Note that 1284 * sym_free_resources() should be used instead of this function after calling 1285 * sym_attach(). 1286 */ 1287 static void __devinit 1288 sym_iounmap_device(struct sym_device *device) 1289 { 1290 if (device->s.ioaddr) 1291 pci_iounmap(device->pdev, device->s.ioaddr); 1292 if (device->s.ramaddr) 1293 pci_iounmap(device->pdev, device->s.ramaddr); 1294 } 1295 1296 /* 1297 * Free controller resources. 1298 */ 1299 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev, 1300 int do_free_irq) 1301 { 1302 /* 1303 * Free O/S specific resources. 1304 */ 1305 if (do_free_irq) 1306 free_irq(pdev->irq, np->s.host); 1307 if (np->s.ioaddr) 1308 pci_iounmap(pdev, np->s.ioaddr); 1309 if (np->s.ramaddr) 1310 pci_iounmap(pdev, np->s.ramaddr); 1311 /* 1312 * Free O/S independent resources. 1313 */ 1314 sym_hcb_free(np); 1315 1316 sym_mfree_dma(np, sizeof(*np), "HCB"); 1317 } 1318 1319 /* 1320 * Host attach and initialisations. 1321 * 1322 * Allocate host data and ncb structure. 1323 * Remap MMIO region. 1324 * Do chip initialization. 1325 * If all is OK, install interrupt handling and 1326 * start the timer daemon. 1327 */ 1328 static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt, 1329 int unit, struct sym_device *dev) 1330 { 1331 struct sym_data *sym_data; 1332 struct sym_hcb *np = NULL; 1333 struct Scsi_Host *shost = NULL; 1334 struct pci_dev *pdev = dev->pdev; 1335 unsigned long flags; 1336 struct sym_fw *fw; 1337 int do_free_irq = 0; 1338 1339 printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n", 1340 unit, dev->chip.name, pdev->revision, pci_name(pdev), 1341 pdev->irq); 1342 1343 /* 1344 * Get the firmware for this chip. 1345 */ 1346 fw = sym_find_firmware(&dev->chip); 1347 if (!fw) 1348 goto attach_failed; 1349 1350 shost = scsi_host_alloc(tpnt, sizeof(*sym_data)); 1351 if (!shost) 1352 goto attach_failed; 1353 sym_data = shost_priv(shost); 1354 1355 /* 1356 * Allocate immediately the host control block, 1357 * since we are only expecting to succeed. :) 1358 * We keep track in the HCB of all the resources that 1359 * are to be released on error. 1360 */ 1361 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB"); 1362 if (!np) 1363 goto attach_failed; 1364 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */ 1365 sym_data->ncb = np; 1366 sym_data->pdev = pdev; 1367 np->s.host = shost; 1368 1369 pci_set_drvdata(pdev, shost); 1370 1371 /* 1372 * Copy some useful infos to the HCB. 1373 */ 1374 np->hcb_ba = vtobus(np); 1375 np->verbose = sym_driver_setup.verbose; 1376 np->s.unit = unit; 1377 np->features = dev->chip.features; 1378 np->clock_divn = dev->chip.nr_divisor; 1379 np->maxoffs = dev->chip.offset_max; 1380 np->maxburst = dev->chip.burst_max; 1381 np->myaddr = dev->host_id; 1382 np->mmio_ba = (u32)dev->mmio_base; 1383 np->ram_ba = (u32)dev->ram_base; 1384 np->s.ioaddr = dev->s.ioaddr; 1385 np->s.ramaddr = dev->s.ramaddr; 1386 1387 /* 1388 * Edit its name. 1389 */ 1390 strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)); 1391 sprintf(np->s.inst_name, "sym%d", np->s.unit); 1392 1393 if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) && 1394 !pci_set_dma_mask(pdev, DMA_DAC_MASK)) { 1395 set_dac(np); 1396 } else if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { 1397 printf_warning("%s: No suitable DMA available\n", sym_name(np)); 1398 goto attach_failed; 1399 } 1400 1401 if (sym_hcb_attach(shost, fw, dev->nvram)) 1402 goto attach_failed; 1403 1404 /* 1405 * Install the interrupt handler. 1406 * If we synchonize the C code with SCRIPTS on interrupt, 1407 * we do not want to share the INTR line at all. 1408 */ 1409 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, 1410 shost)) { 1411 printf_err("%s: request irq %u failure\n", 1412 sym_name(np), pdev->irq); 1413 goto attach_failed; 1414 } 1415 do_free_irq = 1; 1416 1417 /* 1418 * After SCSI devices have been opened, we cannot 1419 * reset the bus safely, so we do it here. 1420 */ 1421 spin_lock_irqsave(shost->host_lock, flags); 1422 if (sym_reset_scsi_bus(np, 0)) 1423 goto reset_failed; 1424 1425 /* 1426 * Start the SCRIPTS. 1427 */ 1428 sym_start_up(shost, 1); 1429 1430 /* 1431 * Start the timer daemon 1432 */ 1433 init_timer(&np->s.timer); 1434 np->s.timer.data = (unsigned long) np; 1435 np->s.timer.function = sym53c8xx_timer; 1436 np->s.lasttime=0; 1437 sym_timer (np); 1438 1439 /* 1440 * Fill Linux host instance structure 1441 * and return success. 1442 */ 1443 shost->max_channel = 0; 1444 shost->this_id = np->myaddr; 1445 shost->max_id = np->maxwide ? 16 : 8; 1446 shost->max_lun = SYM_CONF_MAX_LUN; 1447 shost->unique_id = pci_resource_start(pdev, 0); 1448 shost->cmd_per_lun = SYM_CONF_MAX_TAG; 1449 shost->can_queue = (SYM_CONF_MAX_START-2); 1450 shost->sg_tablesize = SYM_CONF_MAX_SG; 1451 shost->max_cmd_len = 16; 1452 BUG_ON(sym2_transport_template == NULL); 1453 shost->transportt = sym2_transport_template; 1454 1455 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */ 1456 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2) 1457 shost->dma_boundary = 0xFFFFFF; 1458 1459 spin_unlock_irqrestore(shost->host_lock, flags); 1460 1461 return shost; 1462 1463 reset_failed: 1464 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, " 1465 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np)); 1466 spin_unlock_irqrestore(shost->host_lock, flags); 1467 attach_failed: 1468 printf_info("sym%d: giving up ...\n", unit); 1469 if (np) 1470 sym_free_resources(np, pdev, do_free_irq); 1471 else 1472 sym_iounmap_device(dev); 1473 if (shost) 1474 scsi_host_put(shost); 1475 1476 return NULL; 1477 } 1478 1479 1480 /* 1481 * Detect and try to read SYMBIOS and TEKRAM NVRAM. 1482 */ 1483 #if SYM_CONF_NVRAM_SUPPORT 1484 static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1485 { 1486 devp->nvram = nvp; 1487 nvp->type = 0; 1488 1489 sym_read_nvram(devp, nvp); 1490 } 1491 #else 1492 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1493 { 1494 } 1495 #endif /* SYM_CONF_NVRAM_SUPPORT */ 1496 1497 static int __devinit sym_check_supported(struct sym_device *device) 1498 { 1499 struct sym_chip *chip; 1500 struct pci_dev *pdev = device->pdev; 1501 unsigned long io_port = pci_resource_start(pdev, 0); 1502 int i; 1503 1504 /* 1505 * If user excluded this chip, do not initialize it. 1506 * I hate this code so much. Must kill it. 1507 */ 1508 if (io_port) { 1509 for (i = 0 ; i < 8 ; i++) { 1510 if (sym_driver_setup.excludes[i] == io_port) 1511 return -ENODEV; 1512 } 1513 } 1514 1515 /* 1516 * Check if the chip is supported. Then copy the chip description 1517 * to our device structure so we can make it match the actual device 1518 * and options. 1519 */ 1520 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1521 if (!chip) { 1522 dev_info(&pdev->dev, "device not supported\n"); 1523 return -ENODEV; 1524 } 1525 memcpy(&device->chip, chip, sizeof(device->chip)); 1526 1527 return 0; 1528 } 1529 1530 /* 1531 * Ignore Symbios chips controlled by various RAID controllers. 1532 * These controllers set value 0x52414944 at RAM end - 16. 1533 */ 1534 static int __devinit sym_check_raid(struct sym_device *device) 1535 { 1536 unsigned int ram_size, ram_val; 1537 1538 if (!device->s.ramaddr) 1539 return 0; 1540 1541 if (device->chip.features & FE_RAM8K) 1542 ram_size = 8192; 1543 else 1544 ram_size = 4096; 1545 1546 ram_val = readl(device->s.ramaddr + ram_size - 16); 1547 if (ram_val != 0x52414944) 1548 return 0; 1549 1550 dev_info(&device->pdev->dev, 1551 "not initializing, driven by RAID controller.\n"); 1552 return -ENODEV; 1553 } 1554 1555 static int __devinit sym_set_workarounds(struct sym_device *device) 1556 { 1557 struct sym_chip *chip = &device->chip; 1558 struct pci_dev *pdev = device->pdev; 1559 u_short status_reg; 1560 1561 /* 1562 * (ITEM 12 of a DEL about the 896 I haven't yet). 1563 * We must ensure the chip will use WRITE AND INVALIDATE. 1564 * The revision number limit is for now arbitrary. 1565 */ 1566 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) { 1567 chip->features |= (FE_WRIE | FE_CLSE); 1568 } 1569 1570 /* If the chip can do Memory Write Invalidate, enable it */ 1571 if (chip->features & FE_WRIE) { 1572 if (pci_set_mwi(pdev)) 1573 return -ENODEV; 1574 } 1575 1576 /* 1577 * Work around for errant bit in 895A. The 66Mhz 1578 * capable bit is set erroneously. Clear this bit. 1579 * (Item 1 DEL 533) 1580 * 1581 * Make sure Config space and Features agree. 1582 * 1583 * Recall: writes are not normal to status register - 1584 * write a 1 to clear and a 0 to leave unchanged. 1585 * Can only reset bits. 1586 */ 1587 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1588 if (chip->features & FE_66MHZ) { 1589 if (!(status_reg & PCI_STATUS_66MHZ)) 1590 chip->features &= ~FE_66MHZ; 1591 } else { 1592 if (status_reg & PCI_STATUS_66MHZ) { 1593 status_reg = PCI_STATUS_66MHZ; 1594 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1595 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1596 } 1597 } 1598 1599 return 0; 1600 } 1601 1602 /* 1603 * Map HBA registers and on-chip SRAM (if present). 1604 */ 1605 static int __devinit 1606 sym_iomap_device(struct sym_device *device) 1607 { 1608 struct pci_dev *pdev = device->pdev; 1609 struct pci_bus_region bus_addr; 1610 int i = 2; 1611 1612 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]); 1613 device->mmio_base = bus_addr.start; 1614 1615 if (device->chip.features & FE_RAM) { 1616 /* 1617 * If the BAR is 64-bit, resource 2 will be occupied by the 1618 * upper 32 bits 1619 */ 1620 if (!pdev->resource[i].flags) 1621 i++; 1622 pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]); 1623 device->ram_base = bus_addr.start; 1624 } 1625 1626 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO 1627 if (device->mmio_base) 1628 device->s.ioaddr = pci_iomap(pdev, 1, 1629 pci_resource_len(pdev, 1)); 1630 #endif 1631 if (!device->s.ioaddr) 1632 device->s.ioaddr = pci_iomap(pdev, 0, 1633 pci_resource_len(pdev, 0)); 1634 if (!device->s.ioaddr) { 1635 dev_err(&pdev->dev, "could not map registers; giving up.\n"); 1636 return -EIO; 1637 } 1638 if (device->ram_base) { 1639 device->s.ramaddr = pci_iomap(pdev, i, 1640 pci_resource_len(pdev, i)); 1641 if (!device->s.ramaddr) { 1642 dev_warn(&pdev->dev, 1643 "could not map SRAM; continuing anyway.\n"); 1644 device->ram_base = 0; 1645 } 1646 } 1647 1648 return 0; 1649 } 1650 1651 /* 1652 * The NCR PQS and PDS cards are constructed as a DEC bridge 1653 * behind which sits a proprietary NCR memory controller and 1654 * either four or two 53c875s as separate devices. We can tell 1655 * if an 875 is part of a PQS/PDS or not since if it is, it will 1656 * be on the same bus as the memory controller. In its usual 1657 * mode of operation, the 875s are slaved to the memory 1658 * controller for all transfers. To operate with the Linux 1659 * driver, the memory controller is disabled and the 875s 1660 * freed to function independently. The only wrinkle is that 1661 * the preset SCSI ID (which may be zero) must be read in from 1662 * a special configuration space register of the 875. 1663 */ 1664 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev) 1665 { 1666 int slot; 1667 u8 tmp; 1668 1669 for (slot = 0; slot < 256; slot++) { 1670 struct pci_dev *memc = pci_get_slot(pdev->bus, slot); 1671 1672 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) { 1673 pci_dev_put(memc); 1674 continue; 1675 } 1676 1677 /* bit 1: allow individual 875 configuration */ 1678 pci_read_config_byte(memc, 0x44, &tmp); 1679 if ((tmp & 0x2) == 0) { 1680 tmp |= 0x2; 1681 pci_write_config_byte(memc, 0x44, tmp); 1682 } 1683 1684 /* bit 2: drive individual 875 interrupts to the bus */ 1685 pci_read_config_byte(memc, 0x45, &tmp); 1686 if ((tmp & 0x4) == 0) { 1687 tmp |= 0x4; 1688 pci_write_config_byte(memc, 0x45, tmp); 1689 } 1690 1691 pci_dev_put(memc); 1692 break; 1693 } 1694 1695 pci_read_config_byte(pdev, 0x84, &tmp); 1696 sym_dev->host_id = tmp; 1697 } 1698 1699 /* 1700 * Called before unloading the module. 1701 * Detach the host. 1702 * We have to free resources and halt the NCR chip. 1703 */ 1704 static int sym_detach(struct Scsi_Host *shost, struct pci_dev *pdev) 1705 { 1706 struct sym_hcb *np = sym_get_hcb(shost); 1707 printk("%s: detaching ...\n", sym_name(np)); 1708 1709 del_timer_sync(&np->s.timer); 1710 1711 /* 1712 * Reset NCR chip. 1713 * We should use sym_soft_reset(), but we don't want to do 1714 * so, since we may not be safe if interrupts occur. 1715 */ 1716 printk("%s: resetting chip\n", sym_name(np)); 1717 OUTB(np, nc_istat, SRST); 1718 INB(np, nc_mbox1); 1719 udelay(10); 1720 OUTB(np, nc_istat, 0); 1721 1722 sym_free_resources(np, pdev, 1); 1723 scsi_host_put(shost); 1724 1725 return 1; 1726 } 1727 1728 /* 1729 * Driver host template. 1730 */ 1731 static struct scsi_host_template sym2_template = { 1732 .module = THIS_MODULE, 1733 .name = "sym53c8xx", 1734 .info = sym53c8xx_info, 1735 .queuecommand = sym53c8xx_queue_command, 1736 .slave_alloc = sym53c8xx_slave_alloc, 1737 .slave_configure = sym53c8xx_slave_configure, 1738 .slave_destroy = sym53c8xx_slave_destroy, 1739 .eh_abort_handler = sym53c8xx_eh_abort_handler, 1740 .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler, 1741 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, 1742 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, 1743 .this_id = 7, 1744 .use_clustering = ENABLE_CLUSTERING, 1745 .max_sectors = 0xFFFF, 1746 #ifdef SYM_LINUX_PROC_INFO_SUPPORT 1747 .proc_info = sym53c8xx_proc_info, 1748 .proc_name = NAME53C8XX, 1749 #endif 1750 }; 1751 1752 static int attach_count; 1753 1754 static int __devinit sym2_probe(struct pci_dev *pdev, 1755 const struct pci_device_id *ent) 1756 { 1757 struct sym_device sym_dev; 1758 struct sym_nvram nvram; 1759 struct Scsi_Host *shost; 1760 int do_iounmap = 0; 1761 int do_disable_device = 1; 1762 1763 memset(&sym_dev, 0, sizeof(sym_dev)); 1764 memset(&nvram, 0, sizeof(nvram)); 1765 sym_dev.pdev = pdev; 1766 sym_dev.host_id = SYM_SETUP_HOST_ID; 1767 1768 if (pci_enable_device(pdev)) 1769 goto leave; 1770 1771 pci_set_master(pdev); 1772 1773 if (pci_request_regions(pdev, NAME53C8XX)) 1774 goto disable; 1775 1776 if (sym_check_supported(&sym_dev)) 1777 goto free; 1778 1779 if (sym_iomap_device(&sym_dev)) 1780 goto free; 1781 do_iounmap = 1; 1782 1783 if (sym_check_raid(&sym_dev)) { 1784 do_disable_device = 0; /* Don't disable the device */ 1785 goto free; 1786 } 1787 1788 if (sym_set_workarounds(&sym_dev)) 1789 goto free; 1790 1791 sym_config_pqs(pdev, &sym_dev); 1792 1793 sym_get_nvram(&sym_dev, &nvram); 1794 1795 do_iounmap = 0; /* Don't sym_iounmap_device() after sym_attach(). */ 1796 shost = sym_attach(&sym2_template, attach_count, &sym_dev); 1797 if (!shost) 1798 goto free; 1799 1800 if (scsi_add_host(shost, &pdev->dev)) 1801 goto detach; 1802 scsi_scan_host(shost); 1803 1804 attach_count++; 1805 1806 return 0; 1807 1808 detach: 1809 sym_detach(pci_get_drvdata(pdev), pdev); 1810 free: 1811 if (do_iounmap) 1812 sym_iounmap_device(&sym_dev); 1813 pci_release_regions(pdev); 1814 disable: 1815 if (do_disable_device) 1816 pci_disable_device(pdev); 1817 leave: 1818 return -ENODEV; 1819 } 1820 1821 static void sym2_remove(struct pci_dev *pdev) 1822 { 1823 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1824 1825 scsi_remove_host(shost); 1826 sym_detach(shost, pdev); 1827 pci_release_regions(pdev); 1828 pci_disable_device(pdev); 1829 1830 attach_count--; 1831 } 1832 1833 /** 1834 * sym2_io_error_detected() - called when PCI error is detected 1835 * @pdev: pointer to PCI device 1836 * @state: current state of the PCI slot 1837 */ 1838 static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev, 1839 enum pci_channel_state state) 1840 { 1841 /* If slot is permanently frozen, turn everything off */ 1842 if (state == pci_channel_io_perm_failure) { 1843 sym2_remove(pdev); 1844 return PCI_ERS_RESULT_DISCONNECT; 1845 } 1846 1847 disable_irq(pdev->irq); 1848 pci_disable_device(pdev); 1849 1850 /* Request that MMIO be enabled, so register dump can be taken. */ 1851 return PCI_ERS_RESULT_CAN_RECOVER; 1852 } 1853 1854 /** 1855 * sym2_io_slot_dump - Enable MMIO and dump debug registers 1856 * @pdev: pointer to PCI device 1857 */ 1858 static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev) 1859 { 1860 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1861 1862 sym_dump_registers(shost); 1863 1864 /* Request a slot reset. */ 1865 return PCI_ERS_RESULT_NEED_RESET; 1866 } 1867 1868 /** 1869 * sym2_reset_workarounds - hardware-specific work-arounds 1870 * 1871 * This routine is similar to sym_set_workarounds(), except 1872 * that, at this point, we already know that the device was 1873 * successfully initialized at least once before, and so most 1874 * of the steps taken there are un-needed here. 1875 */ 1876 static void sym2_reset_workarounds(struct pci_dev *pdev) 1877 { 1878 u_short status_reg; 1879 struct sym_chip *chip; 1880 1881 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1882 1883 /* Work around for errant bit in 895A, in a fashion 1884 * similar to what is done in sym_set_workarounds(). 1885 */ 1886 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1887 if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) { 1888 status_reg = PCI_STATUS_66MHZ; 1889 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1890 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1891 } 1892 } 1893 1894 /** 1895 * sym2_io_slot_reset() - called when the pci bus has been reset. 1896 * @pdev: pointer to PCI device 1897 * 1898 * Restart the card from scratch. 1899 */ 1900 static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev) 1901 { 1902 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1903 struct sym_hcb *np = sym_get_hcb(shost); 1904 1905 printk(KERN_INFO "%s: recovering from a PCI slot reset\n", 1906 sym_name(np)); 1907 1908 if (pci_enable_device(pdev)) { 1909 printk(KERN_ERR "%s: Unable to enable after PCI reset\n", 1910 sym_name(np)); 1911 return PCI_ERS_RESULT_DISCONNECT; 1912 } 1913 1914 pci_set_master(pdev); 1915 enable_irq(pdev->irq); 1916 1917 /* If the chip can do Memory Write Invalidate, enable it */ 1918 if (np->features & FE_WRIE) { 1919 if (pci_set_mwi(pdev)) 1920 return PCI_ERS_RESULT_DISCONNECT; 1921 } 1922 1923 /* Perform work-arounds, analogous to sym_set_workarounds() */ 1924 sym2_reset_workarounds(pdev); 1925 1926 /* Perform host reset only on one instance of the card */ 1927 if (PCI_FUNC(pdev->devfn) == 0) { 1928 if (sym_reset_scsi_bus(np, 0)) { 1929 printk(KERN_ERR "%s: Unable to reset scsi host\n", 1930 sym_name(np)); 1931 return PCI_ERS_RESULT_DISCONNECT; 1932 } 1933 sym_start_up(shost, 1); 1934 } 1935 1936 return PCI_ERS_RESULT_RECOVERED; 1937 } 1938 1939 /** 1940 * sym2_io_resume() - resume normal ops after PCI reset 1941 * @pdev: pointer to PCI device 1942 * 1943 * Called when the error recovery driver tells us that its 1944 * OK to resume normal operation. Use completion to allow 1945 * halted scsi ops to resume. 1946 */ 1947 static void sym2_io_resume(struct pci_dev *pdev) 1948 { 1949 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1950 struct sym_data *sym_data = shost_priv(shost); 1951 1952 spin_lock_irq(shost->host_lock); 1953 if (sym_data->io_reset) 1954 complete_all(sym_data->io_reset); 1955 spin_unlock_irq(shost->host_lock); 1956 } 1957 1958 static void sym2_get_signalling(struct Scsi_Host *shost) 1959 { 1960 struct sym_hcb *np = sym_get_hcb(shost); 1961 enum spi_signal_type type; 1962 1963 switch (np->scsi_mode) { 1964 case SMODE_SE: 1965 type = SPI_SIGNAL_SE; 1966 break; 1967 case SMODE_LVD: 1968 type = SPI_SIGNAL_LVD; 1969 break; 1970 case SMODE_HVD: 1971 type = SPI_SIGNAL_HVD; 1972 break; 1973 default: 1974 type = SPI_SIGNAL_UNKNOWN; 1975 break; 1976 } 1977 spi_signalling(shost) = type; 1978 } 1979 1980 static void sym2_set_offset(struct scsi_target *starget, int offset) 1981 { 1982 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1983 struct sym_hcb *np = sym_get_hcb(shost); 1984 struct sym_tcb *tp = &np->target[starget->id]; 1985 1986 tp->tgoal.offset = offset; 1987 tp->tgoal.check_nego = 1; 1988 } 1989 1990 static void sym2_set_period(struct scsi_target *starget, int period) 1991 { 1992 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1993 struct sym_hcb *np = sym_get_hcb(shost); 1994 struct sym_tcb *tp = &np->target[starget->id]; 1995 1996 /* have to have DT for these transfers, but DT will also 1997 * set width, so check that this is allowed */ 1998 if (period <= np->minsync && spi_width(starget)) 1999 tp->tgoal.dt = 1; 2000 2001 tp->tgoal.period = period; 2002 tp->tgoal.check_nego = 1; 2003 } 2004 2005 static void sym2_set_width(struct scsi_target *starget, int width) 2006 { 2007 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2008 struct sym_hcb *np = sym_get_hcb(shost); 2009 struct sym_tcb *tp = &np->target[starget->id]; 2010 2011 /* It is illegal to have DT set on narrow transfers. If DT is 2012 * clear, we must also clear IU and QAS. */ 2013 if (width == 0) 2014 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 2015 2016 tp->tgoal.width = width; 2017 tp->tgoal.check_nego = 1; 2018 } 2019 2020 static void sym2_set_dt(struct scsi_target *starget, int dt) 2021 { 2022 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2023 struct sym_hcb *np = sym_get_hcb(shost); 2024 struct sym_tcb *tp = &np->target[starget->id]; 2025 2026 /* We must clear QAS and IU if DT is clear */ 2027 if (dt) 2028 tp->tgoal.dt = 1; 2029 else 2030 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 2031 tp->tgoal.check_nego = 1; 2032 } 2033 2034 #if 0 2035 static void sym2_set_iu(struct scsi_target *starget, int iu) 2036 { 2037 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2038 struct sym_hcb *np = sym_get_hcb(shost); 2039 struct sym_tcb *tp = &np->target[starget->id]; 2040 2041 if (iu) 2042 tp->tgoal.iu = tp->tgoal.dt = 1; 2043 else 2044 tp->tgoal.iu = 0; 2045 tp->tgoal.check_nego = 1; 2046 } 2047 2048 static void sym2_set_qas(struct scsi_target *starget, int qas) 2049 { 2050 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2051 struct sym_hcb *np = sym_get_hcb(shost); 2052 struct sym_tcb *tp = &np->target[starget->id]; 2053 2054 if (qas) 2055 tp->tgoal.dt = tp->tgoal.qas = 1; 2056 else 2057 tp->tgoal.qas = 0; 2058 tp->tgoal.check_nego = 1; 2059 } 2060 #endif 2061 2062 static struct spi_function_template sym2_transport_functions = { 2063 .set_offset = sym2_set_offset, 2064 .show_offset = 1, 2065 .set_period = sym2_set_period, 2066 .show_period = 1, 2067 .set_width = sym2_set_width, 2068 .show_width = 1, 2069 .set_dt = sym2_set_dt, 2070 .show_dt = 1, 2071 #if 0 2072 .set_iu = sym2_set_iu, 2073 .show_iu = 1, 2074 .set_qas = sym2_set_qas, 2075 .show_qas = 1, 2076 #endif 2077 .get_signalling = sym2_get_signalling, 2078 }; 2079 2080 static struct pci_device_id sym2_id_table[] __devinitdata = { 2081 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810, 2082 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2083 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820, 2084 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2085 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825, 2086 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2087 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815, 2088 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2089 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP, 2090 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2091 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860, 2092 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2093 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510, 2094 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, 2095 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896, 2096 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2097 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895, 2098 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2099 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885, 2100 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2101 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875, 2102 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2103 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510, 2104 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */ 2105 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A, 2106 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2107 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A, 2108 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2109 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33, 2110 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2111 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66, 2112 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2113 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J, 2114 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2115 { 0, } 2116 }; 2117 2118 MODULE_DEVICE_TABLE(pci, sym2_id_table); 2119 2120 static const struct pci_error_handlers sym2_err_handler = { 2121 .error_detected = sym2_io_error_detected, 2122 .mmio_enabled = sym2_io_slot_dump, 2123 .slot_reset = sym2_io_slot_reset, 2124 .resume = sym2_io_resume, 2125 }; 2126 2127 static struct pci_driver sym2_driver = { 2128 .name = NAME53C8XX, 2129 .id_table = sym2_id_table, 2130 .probe = sym2_probe, 2131 .remove = sym2_remove, 2132 .err_handler = &sym2_err_handler, 2133 }; 2134 2135 static int __init sym2_init(void) 2136 { 2137 int error; 2138 2139 sym2_setup_params(); 2140 sym2_transport_template = spi_attach_transport(&sym2_transport_functions); 2141 if (!sym2_transport_template) 2142 return -ENODEV; 2143 2144 error = pci_register_driver(&sym2_driver); 2145 if (error) 2146 spi_release_transport(sym2_transport_template); 2147 return error; 2148 } 2149 2150 static void __exit sym2_exit(void) 2151 { 2152 pci_unregister_driver(&sym2_driver); 2153 spi_release_transport(sym2_transport_template); 2154 } 2155 2156 module_init(sym2_init); 2157 module_exit(sym2_exit); 2158