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sym_glue.c
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linux-6.19.14/drivers/scsi/sym53c8xx_2/sym_glue.c
1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family 4 * of PCI-SCSI IO processors. 5 * 6 * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr> 7 * Copyright (c) 2003-2005 Matthew Wilcox <matthew@wil.cx> 8 * 9 * This driver is derived from the Linux sym53c8xx driver. 10 * Copyright (C) 1998-2000 Gerard Roudier 11 * 12 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been 13 * a port of the FreeBSD ncr driver to Linux-1.2.13. 14 * 15 * The original ncr driver has been written for 386bsd and FreeBSD by 16 * Wolfgang Stanglmeier <wolf@cologne.de> 17 * Stefan Esser <se@mi.Uni-Koeln.de> 18 * Copyright (C) 1994 Wolfgang Stanglmeier 19 * 20 * Other major contributions: 21 * 22 * NVRAM detection and reading. 23 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk> 24 * 25 *----------------------------------------------------------------------------- 26 */ 27#include <linux/ctype.h> 28#include <linux/init.h> 29#include <linux/module.h> 30#include <linux/moduleparam.h> 31#include <linux/spinlock.h> 32#include <scsi/scsi.h> 33#include <scsi/scsi_tcq.h> 34#include <scsi/scsi_device.h> 35#include <scsi/scsi_transport.h> 36 37#include "sym_glue.h" 38#include "sym_nvram.h" 39 40#define NAME53C "sym53c" 41#define NAME53C8XX "sym53c8xx" 42 43struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP; 44unsigned int sym_debug_flags = 0; 45 46static char *excl_string; 47static char *safe_string; 48module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0); 49module_param_named(burst, sym_driver_setup.burst_order, byte, 0); 50module_param_named(led, sym_driver_setup.scsi_led, byte, 0); 51module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0); 52module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0); 53module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0); 54module_param_named(hostid, sym_driver_setup.host_id, byte, 0); 55module_param_named(verb, sym_driver_setup.verbose, byte, 0); 56module_param_named(debug, sym_debug_flags, uint, 0); 57module_param_named(settle, sym_driver_setup.settle_delay, byte, 0); 58module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0); 59module_param_named(excl, excl_string, charp, 0); 60module_param_named(safe, safe_string, charp, 0); 61 62MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default"); 63MODULE_PARM_DESC(burst, "Maximum burst. 0 to disable, 255 to read from registers"); 64MODULE_PARM_DESC(led, "Set to 1 to enable LED support"); 65MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3"); 66MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole"); 67MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error"); 68MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters"); 69MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive"); 70MODULE_PARM_DESC(debug, "Set bits to enable debugging"); 71MODULE_PARM_DESC(settle, "Settle delay in seconds. Default 3"); 72MODULE_PARM_DESC(nvram, "Option currently not used"); 73MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached"); 74MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\""); 75 76MODULE_LICENSE("GPL"); 77MODULE_VERSION(SYM_VERSION); 78MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>"); 79MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters"); 80 81static void sym2_setup_params(void) 82{ 83 char *p = excl_string; 84 int xi = 0; 85 86 while (p && (xi < 8)) { 87 char *next_p; 88 int val = (int) simple_strtoul(p, &next_p, 0); 89 sym_driver_setup.excludes[xi++] = val; 90 p = next_p; 91 } 92 93 if (safe_string) { 94 if (*safe_string == 'y') { 95 sym_driver_setup.max_tag = 0; 96 sym_driver_setup.burst_order = 0; 97 sym_driver_setup.scsi_led = 0; 98 sym_driver_setup.scsi_diff = 1; 99 sym_driver_setup.irq_mode = 0; 100 sym_driver_setup.scsi_bus_check = 2; 101 sym_driver_setup.host_id = 7; 102 sym_driver_setup.verbose = 2; 103 sym_driver_setup.settle_delay = 10; 104 sym_driver_setup.use_nvram = 1; 105 } else if (*safe_string != 'n') { 106 printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s" 107 " passed to safe option", safe_string); 108 } 109 } 110} 111 112static struct scsi_transport_template *sym2_transport_template = NULL; 113 114/* 115 * Driver private area in the SCSI command structure. 116 */ 117struct sym_ucmd { /* Override the SCSI pointer structure */ 118 struct completion *eh_done; /* SCSI error handling */ 119}; 120 121#define SYM_UCMD_PTR(cmd) ((struct sym_ucmd *)scsi_cmd_priv(cmd)) 122#define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host) 123 124/* 125 * Complete a pending CAM CCB. 126 */ 127void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd) 128{ 129 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 130 131 if (ucmd->eh_done) 132 complete(ucmd->eh_done); 133 134 scsi_dma_unmap(cmd); 135 scsi_done(cmd); 136} 137 138/* 139 * Tell the SCSI layer about a BUS RESET. 140 */ 141void sym_xpt_async_bus_reset(struct sym_hcb *np) 142{ 143 printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np)); 144 np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ; 145 np->s.settle_time_valid = 1; 146 if (sym_verbose >= 2) 147 printf_info("%s: command processing suspended for %d seconds\n", 148 sym_name(np), sym_driver_setup.settle_delay); 149} 150 151/* 152 * Choose the more appropriate CAM status if 153 * the IO encountered an extended error. 154 */ 155static int sym_xerr_cam_status(int cam_status, int x_status) 156{ 157 if (x_status) { 158 if (x_status & XE_PARITY_ERR) 159 cam_status = DID_PARITY; 160 else 161 cam_status = DID_ERROR; 162 } 163 return cam_status; 164} 165 166/* 167 * Build CAM result for a failed or auto-sensed IO. 168 */ 169void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid) 170{ 171 struct scsi_cmnd *cmd = cp->cmd; 172 u_int cam_status, scsi_status; 173 174 cam_status = DID_OK; 175 scsi_status = cp->ssss_status; 176 177 if (cp->host_flags & HF_SENSE) { 178 scsi_status = cp->sv_scsi_status; 179 resid = cp->sv_resid; 180 if (sym_verbose && cp->sv_xerr_status) 181 sym_print_xerr(cmd, cp->sv_xerr_status); 182 if (cp->host_status == HS_COMPLETE && 183 cp->ssss_status == S_GOOD && 184 cp->xerr_status == 0) { 185 cam_status = sym_xerr_cam_status(DID_OK, 186 cp->sv_xerr_status); 187 /* 188 * Bounce back the sense data to user. 189 */ 190 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); 191 memcpy(cmd->sense_buffer, cp->sns_bbuf, 192 min(SCSI_SENSE_BUFFERSIZE, SYM_SNS_BBUF_LEN)); 193#if 0 194 /* 195 * If the device reports a UNIT ATTENTION condition 196 * due to a RESET condition, we should consider all 197 * disconnect CCBs for this unit as aborted. 198 */ 199 if (1) { 200 u_char *p; 201 p = (u_char *) cmd->sense_data; 202 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29) 203 sym_clear_tasks(np, DID_ABORT, 204 cp->target,cp->lun, -1); 205 } 206#endif 207 } else { 208 /* 209 * Error return from our internal request sense. This 210 * is bad: we must clear the contingent allegiance 211 * condition otherwise the device will always return 212 * BUSY. Use a big stick. 213 */ 214 sym_reset_scsi_target(np, cmd->device->id); 215 cam_status = DID_ERROR; 216 } 217 } else if (cp->host_status == HS_COMPLETE) /* Bad SCSI status */ 218 cam_status = DID_OK; 219 else if (cp->host_status == HS_SEL_TIMEOUT) /* Selection timeout */ 220 cam_status = DID_NO_CONNECT; 221 else if (cp->host_status == HS_UNEXPECTED) /* Unexpected BUS FREE*/ 222 cam_status = DID_ERROR; 223 else { /* Extended error */ 224 if (sym_verbose) { 225 sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n", 226 cp->host_status, cp->ssss_status, 227 cp->xerr_status); 228 } 229 /* 230 * Set the most appropriate value for CAM status. 231 */ 232 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status); 233 } 234 scsi_set_resid(cmd, resid); 235 cmd->result = (cam_status << 16) | scsi_status; 236} 237 238static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd) 239{ 240 int segment; 241 int use_sg; 242 243 cp->data_len = 0; 244 245 use_sg = scsi_dma_map(cmd); 246 if (use_sg > 0) { 247 struct scatterlist *sg; 248 struct sym_tcb *tp = &np->target[cp->target]; 249 struct sym_tblmove *data; 250 251 if (use_sg > SYM_CONF_MAX_SG) { 252 scsi_dma_unmap(cmd); 253 return -1; 254 } 255 256 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg]; 257 258 scsi_for_each_sg(cmd, sg, use_sg, segment) { 259 dma_addr_t baddr = sg_dma_address(sg); 260 unsigned int len = sg_dma_len(sg); 261 262 if ((len & 1) && (tp->head.wval & EWS)) { 263 len++; 264 cp->odd_byte_adjustment++; 265 } 266 267 sym_build_sge(np, &data[segment], baddr, len); 268 cp->data_len += len; 269 } 270 } else { 271 segment = -2; 272 } 273 274 return segment; 275} 276 277/* 278 * Queue a SCSI command. 279 */ 280static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd) 281{ 282 struct scsi_device *sdev = cmd->device; 283 struct sym_tcb *tp; 284 struct sym_lcb *lp; 285 struct sym_ccb *cp; 286 int order; 287 288 /* 289 * Retrieve the target descriptor. 290 */ 291 tp = &np->target[sdev->id]; 292 293 /* 294 * Select tagged/untagged. 295 */ 296 lp = sym_lp(tp, sdev->lun); 297 order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0; 298 299 /* 300 * Queue the SCSI IO. 301 */ 302 cp = sym_get_ccb(np, cmd, order); 303 if (!cp) 304 return 1; /* Means resource shortage */ 305 sym_queue_scsiio(np, cmd, cp); 306 return 0; 307} 308 309/* 310 * Setup buffers and pointers that address the CDB. 311 */ 312static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) 313{ 314 memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len); 315 316 cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]); 317 cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len); 318 319 return 0; 320} 321 322/* 323 * Setup pointers that address the data and start the I/O. 324 */ 325int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp) 326{ 327 u32 lastp, goalp; 328 int dir; 329 330 /* 331 * Build the CDB. 332 */ 333 if (sym_setup_cdb(np, cmd, cp)) 334 goto out_abort; 335 336 /* 337 * No direction means no data. 338 */ 339 dir = cmd->sc_data_direction; 340 if (dir != DMA_NONE) { 341 cp->segments = sym_scatter(np, cp, cmd); 342 if (cp->segments < 0) { 343 sym_set_cam_status(cmd, DID_ERROR); 344 goto out_abort; 345 } 346 347 /* 348 * No segments means no data. 349 */ 350 if (!cp->segments) 351 dir = DMA_NONE; 352 } else { 353 cp->data_len = 0; 354 cp->segments = 0; 355 } 356 357 /* 358 * Set the data pointer. 359 */ 360 switch (dir) { 361 case DMA_BIDIRECTIONAL: 362 scmd_printk(KERN_INFO, cmd, "got DMA_BIDIRECTIONAL command"); 363 sym_set_cam_status(cmd, DID_ERROR); 364 goto out_abort; 365 case DMA_TO_DEVICE: 366 goalp = SCRIPTA_BA(np, data_out2) + 8; 367 lastp = goalp - 8 - (cp->segments * (2*4)); 368 break; 369 case DMA_FROM_DEVICE: 370 cp->host_flags |= HF_DATA_IN; 371 goalp = SCRIPTA_BA(np, data_in2) + 8; 372 lastp = goalp - 8 - (cp->segments * (2*4)); 373 break; 374 case DMA_NONE: 375 default: 376 lastp = goalp = SCRIPTB_BA(np, no_data); 377 break; 378 } 379 380 /* 381 * Set all pointers values needed by SCRIPTS. 382 */ 383 cp->phys.head.lastp = cpu_to_scr(lastp); 384 cp->phys.head.savep = cpu_to_scr(lastp); 385 cp->startp = cp->phys.head.savep; 386 cp->goalp = cpu_to_scr(goalp); 387 388 /* 389 * When `#ifed 1', the code below makes the driver 390 * panic on the first attempt to write to a SCSI device. 391 * It is the first test we want to do after a driver 392 * change that does not seem obviously safe. :) 393 */ 394#if 0 395 switch (cp->cdb_buf[0]) { 396 case 0x0A: case 0x2A: case 0xAA: 397 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n"); 398 break; 399 default: 400 break; 401 } 402#endif 403 404 /* 405 * activate this job. 406 */ 407 sym_put_start_queue(np, cp); 408 return 0; 409 410out_abort: 411 sym_free_ccb(np, cp); 412 sym_xpt_done(np, cmd); 413 return 0; 414} 415 416 417/* 418 * timer daemon. 419 * 420 * Misused to keep the driver running when 421 * interrupts are not configured correctly. 422 */ 423static void sym_timer(struct sym_hcb *np) 424{ 425 unsigned long thistime = jiffies; 426 427 /* 428 * Restart the timer. 429 */ 430 np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL; 431 add_timer(&np->s.timer); 432 433 /* 434 * If we are resetting the ncr, wait for settle_time before 435 * clearing it. Then command processing will be resumed. 436 */ 437 if (np->s.settle_time_valid) { 438 if (time_before_eq(np->s.settle_time, thistime)) { 439 if (sym_verbose >= 2 ) 440 printk("%s: command processing resumed\n", 441 sym_name(np)); 442 np->s.settle_time_valid = 0; 443 } 444 return; 445 } 446 447 /* 448 * Nothing to do for now, but that may come. 449 */ 450 if (np->s.lasttime + 4*HZ < thistime) { 451 np->s.lasttime = thistime; 452 } 453 454#ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS 455 /* 456 * Some way-broken PCI bridges may lead to 457 * completions being lost when the clearing 458 * of the INTFLY flag by the CPU occurs 459 * concurrently with the chip raising this flag. 460 * If this ever happen, lost completions will 461 * be reaped here. 462 */ 463 sym_wakeup_done(np); 464#endif 465} 466 467 468/* 469 * PCI BUS error handler. 470 */ 471void sym_log_bus_error(struct Scsi_Host *shost) 472{ 473 struct sym_data *sym_data = shost_priv(shost); 474 struct pci_dev *pdev = sym_data->pdev; 475 unsigned short pci_sts; 476 pci_read_config_word(pdev, PCI_STATUS, &pci_sts); 477 if (pci_sts & 0xf900) { 478 pci_write_config_word(pdev, PCI_STATUS, pci_sts); 479 shost_printk(KERN_WARNING, shost, 480 "PCI bus error: status = 0x%04x\n", pci_sts & 0xf900); 481 } 482} 483 484/* 485 * queuecommand method. Entered with the host adapter lock held and 486 * interrupts disabled. 487 */ 488static int sym53c8xx_queue_command_lck(struct scsi_cmnd *cmd) 489{ 490 struct sym_hcb *np = SYM_SOFTC_PTR(cmd); 491 struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd); 492 int sts = 0; 493 494 memset(ucp, 0, sizeof(*ucp)); 495 496 /* 497 * Shorten our settle_time if needed for 498 * this command not to time out. 499 */ 500 if (np->s.settle_time_valid && scsi_cmd_to_rq(cmd)->timeout) { 501 unsigned long tlimit = jiffies + scsi_cmd_to_rq(cmd)->timeout; 502 tlimit -= SYM_CONF_TIMER_INTERVAL*2; 503 if (time_after(np->s.settle_time, tlimit)) { 504 np->s.settle_time = tlimit; 505 } 506 } 507 508 if (np->s.settle_time_valid) 509 return SCSI_MLQUEUE_HOST_BUSY; 510 511 sts = sym_queue_command(np, cmd); 512 if (sts) 513 return SCSI_MLQUEUE_HOST_BUSY; 514 return 0; 515} 516 517static DEF_SCSI_QCMD(sym53c8xx_queue_command) 518 519/* 520 * Linux entry point of the interrupt handler. 521 */ 522static irqreturn_t sym53c8xx_intr(int irq, void *dev_id) 523{ 524 struct Scsi_Host *shost = dev_id; 525 struct sym_data *sym_data = shost_priv(shost); 526 irqreturn_t result; 527 528 /* Avoid spinloop trying to handle interrupts on frozen device */ 529 if (pci_channel_offline(sym_data->pdev)) 530 return IRQ_NONE; 531 532 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("["); 533 534 spin_lock(shost->host_lock); 535 result = sym_interrupt(shost); 536 spin_unlock(shost->host_lock); 537 538 if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n"); 539 540 return result; 541} 542 543/* 544 * Linux entry point of the timer handler 545 */ 546static void sym53c8xx_timer(struct timer_list *t) 547{ 548 struct sym_hcb *np = timer_container_of(np, t, s.timer); 549 unsigned long flags; 550 551 spin_lock_irqsave(np->s.host->host_lock, flags); 552 sym_timer(np); 553 spin_unlock_irqrestore(np->s.host->host_lock, flags); 554} 555 556 557/* 558 * What the eh thread wants us to perform. 559 */ 560#define SYM_EH_ABORT 0 561#define SYM_EH_DEVICE_RESET 1 562 563/* 564 * Generic method for our eh processing. 565 * The 'op' argument tells what we have to do. 566 */ 567/* 568 * Error handlers called from the eh thread (one thread per HBA). 569 */ 570static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd) 571{ 572 struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd); 573 struct Scsi_Host *shost = cmd->device->host; 574 struct sym_data *sym_data = shost_priv(shost); 575 struct pci_dev *pdev = sym_data->pdev; 576 struct sym_hcb *np = sym_data->ncb; 577 SYM_QUEHEAD *qp; 578 int cmd_queued = 0; 579 int sts = -1; 580 struct completion eh_done; 581 582 scmd_printk(KERN_WARNING, cmd, "ABORT operation started\n"); 583 584 /* 585 * Escalate to host reset if the PCI bus went down 586 */ 587 if (pci_channel_offline(pdev)) 588 return SCSI_FAILED; 589 590 spin_lock_irq(shost->host_lock); 591 /* This one is queued in some place -> to wait for completion */ 592 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { 593 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq); 594 if (cp->cmd == cmd) { 595 cmd_queued = 1; 596 break; 597 } 598 } 599 600 sts = sym_abort_scsiio(np, cmd, 1); 601 /* On error, restore everything and cross fingers :) */ 602 if (sts) 603 cmd_queued = 0; 604 605 if (cmd_queued) { 606 init_completion(&eh_done); 607 ucmd->eh_done = &eh_done; 608 spin_unlock_irq(shost->host_lock); 609 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) { 610 ucmd->eh_done = NULL; 611 sts = -2; 612 } 613 } else { 614 spin_unlock_irq(shost->host_lock); 615 } 616 617 dev_warn(&cmd->device->sdev_gendev, "ABORT operation %s.\n", 618 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); 619 return sts ? SCSI_FAILED : SCSI_SUCCESS; 620} 621 622static int sym53c8xx_eh_target_reset_handler(struct scsi_cmnd *cmd) 623{ 624 struct scsi_target *starget = scsi_target(cmd->device); 625 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 626 struct sym_data *sym_data = shost_priv(shost); 627 struct pci_dev *pdev = sym_data->pdev; 628 struct sym_hcb *np = sym_data->ncb; 629 SYM_QUEHEAD *qp; 630 int sts; 631 struct completion eh_done; 632 633 starget_printk(KERN_WARNING, starget, 634 "TARGET RESET operation started\n"); 635 636 /* 637 * Escalate to host reset if the PCI bus went down 638 */ 639 if (pci_channel_offline(pdev)) 640 return SCSI_FAILED; 641 642 spin_lock_irq(shost->host_lock); 643 sts = sym_reset_scsi_target(np, starget->id); 644 if (!sts) { 645 FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) { 646 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, 647 link_ccbq); 648 struct scsi_cmnd *cmd = cp->cmd; 649 struct sym_ucmd *ucmd; 650 651 if (!cmd || cmd->device->channel != starget->channel || 652 cmd->device->id != starget->id) 653 continue; 654 655 ucmd = SYM_UCMD_PTR(cmd); 656 init_completion(&eh_done); 657 ucmd->eh_done = &eh_done; 658 spin_unlock_irq(shost->host_lock); 659 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) { 660 ucmd->eh_done = NULL; 661 sts = -2; 662 } 663 spin_lock_irq(shost->host_lock); 664 } 665 } 666 spin_unlock_irq(shost->host_lock); 667 668 starget_printk(KERN_WARNING, starget, "TARGET RESET operation %s.\n", 669 sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed"); 670 return SCSI_SUCCESS; 671} 672 673static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd) 674{ 675 struct Scsi_Host *shost = cmd->device->host; 676 struct sym_data *sym_data = shost_priv(shost); 677 struct pci_dev *pdev = sym_data->pdev; 678 struct sym_hcb *np = sym_data->ncb; 679 680 scmd_printk(KERN_WARNING, cmd, "BUS RESET operation started\n"); 681 682 /* 683 * Escalate to host reset if the PCI bus went down 684 */ 685 if (pci_channel_offline(pdev)) 686 return SCSI_FAILED; 687 688 spin_lock_irq(shost->host_lock); 689 sym_reset_scsi_bus(np, 1); 690 spin_unlock_irq(shost->host_lock); 691 692 dev_warn(&cmd->device->sdev_gendev, "BUS RESET operation complete.\n"); 693 return SCSI_SUCCESS; 694} 695 696static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd) 697{ 698 struct Scsi_Host *shost = cmd->device->host; 699 struct sym_data *sym_data = shost_priv(shost); 700 struct pci_dev *pdev = sym_data->pdev; 701 struct sym_hcb *np = sym_data->ncb; 702 struct completion eh_done; 703 int finished_reset = 1; 704 705 shost_printk(KERN_WARNING, shost, "HOST RESET operation started\n"); 706 707 /* We may be in an error condition because the PCI bus 708 * went down. In this case, we need to wait until the 709 * PCI bus is reset, the card is reset, and only then 710 * proceed with the scsi error recovery. There's no 711 * point in hurrying; take a leisurely wait. 712 */ 713#define WAIT_FOR_PCI_RECOVERY 35 714 if (pci_channel_offline(pdev)) { 715 init_completion(&eh_done); 716 spin_lock_irq(shost->host_lock); 717 /* Make sure we didn't race */ 718 if (pci_channel_offline(pdev)) { 719 BUG_ON(sym_data->io_reset); 720 sym_data->io_reset = &eh_done; 721 finished_reset = 0; 722 } 723 spin_unlock_irq(shost->host_lock); 724 if (!finished_reset) 725 finished_reset = wait_for_completion_timeout 726 (sym_data->io_reset, 727 WAIT_FOR_PCI_RECOVERY*HZ); 728 spin_lock_irq(shost->host_lock); 729 sym_data->io_reset = NULL; 730 spin_unlock_irq(shost->host_lock); 731 } 732 733 if (finished_reset) { 734 sym_reset_scsi_bus(np, 0); 735 sym_start_up(shost, 1); 736 } 737 738 shost_printk(KERN_WARNING, shost, "HOST RESET operation %s.\n", 739 finished_reset==1 ? "complete" : "failed"); 740 return finished_reset ? SCSI_SUCCESS : SCSI_FAILED; 741} 742 743/* 744 * Tune device queuing depth, according to various limits. 745 */ 746static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags) 747{ 748 struct sym_lcb *lp = sym_lp(tp, lun); 749 u_short oldtags; 750 751 if (!lp) 752 return; 753 754 oldtags = lp->s.reqtags; 755 756 if (reqtags > lp->s.scdev_depth) 757 reqtags = lp->s.scdev_depth; 758 759 lp->s.reqtags = reqtags; 760 761 if (reqtags != oldtags) { 762 dev_info(&tp->starget->dev, 763 "tagged command queuing %s, command queue depth %d.\n", 764 lp->s.reqtags ? "enabled" : "disabled", reqtags); 765 } 766} 767 768static int sym53c8xx_sdev_init(struct scsi_device *sdev) 769{ 770 struct sym_hcb *np = sym_get_hcb(sdev->host); 771 struct sym_tcb *tp = &np->target[sdev->id]; 772 struct sym_lcb *lp; 773 unsigned long flags; 774 int error; 775 776 if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN) 777 return -ENXIO; 778 779 spin_lock_irqsave(np->s.host->host_lock, flags); 780 781 /* 782 * Fail the device init if the device is flagged NOSCAN at BOOT in 783 * the NVRAM. This may speed up boot and maintain coherency with 784 * BIOS device numbering. Clearing the flag allows the user to 785 * rescan skipped devices later. We also return an error for 786 * devices not flagged for SCAN LUNS in the NVRAM since some single 787 * lun devices behave badly when asked for a non zero LUN. 788 */ 789 790 if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) { 791 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED; 792 starget_printk(KERN_INFO, sdev->sdev_target, 793 "Scan at boot disabled in NVRAM\n"); 794 error = -ENXIO; 795 goto out; 796 } 797 798 if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) { 799 if (sdev->lun != 0) { 800 error = -ENXIO; 801 goto out; 802 } 803 starget_printk(KERN_INFO, sdev->sdev_target, 804 "Multiple LUNs disabled in NVRAM\n"); 805 } 806 807 lp = sym_alloc_lcb(np, sdev->id, sdev->lun); 808 if (!lp) { 809 error = -ENOMEM; 810 goto out; 811 } 812 if (tp->nlcb == 1) 813 tp->starget = sdev->sdev_target; 814 815 spi_min_period(tp->starget) = tp->usr_period; 816 spi_max_width(tp->starget) = tp->usr_width; 817 818 error = 0; 819out: 820 spin_unlock_irqrestore(np->s.host->host_lock, flags); 821 822 return error; 823} 824 825/* 826 * Linux entry point for device queue sizing. 827 */ 828static int sym53c8xx_sdev_configure(struct scsi_device *sdev, 829 struct queue_limits *lim) 830{ 831 struct sym_hcb *np = sym_get_hcb(sdev->host); 832 struct sym_tcb *tp = &np->target[sdev->id]; 833 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 834 int reqtags, depth_to_use; 835 836 /* 837 * Get user flags. 838 */ 839 lp->curr_flags = lp->user_flags; 840 841 /* 842 * Select queue depth from driver setup. 843 * Do not use more than configured by user. 844 * Use at least 1. 845 * Do not use more than our maximum. 846 */ 847 reqtags = sym_driver_setup.max_tag; 848 if (reqtags > tp->usrtags) 849 reqtags = tp->usrtags; 850 if (!sdev->tagged_supported) 851 reqtags = 0; 852 if (reqtags > SYM_CONF_MAX_TAG) 853 reqtags = SYM_CONF_MAX_TAG; 854 depth_to_use = reqtags ? reqtags : 1; 855 scsi_change_queue_depth(sdev, depth_to_use); 856 lp->s.scdev_depth = depth_to_use; 857 sym_tune_dev_queuing(tp, sdev->lun, reqtags); 858 859 if (!spi_initial_dv(sdev->sdev_target)) 860 spi_dv_device(sdev); 861 862 return 0; 863} 864 865static void sym53c8xx_sdev_destroy(struct scsi_device *sdev) 866{ 867 struct sym_hcb *np = sym_get_hcb(sdev->host); 868 struct sym_tcb *tp = &np->target[sdev->id]; 869 struct sym_lcb *lp = sym_lp(tp, sdev->lun); 870 unsigned long flags; 871 872 /* if sdev_init returned before allocating a sym_lcb, return */ 873 if (!lp) 874 return; 875 876 spin_lock_irqsave(np->s.host->host_lock, flags); 877 878 if (lp->busy_itlq || lp->busy_itl) { 879 /* 880 * This really shouldn't happen, but we can't return an error 881 * so let's try to stop all on-going I/O. 882 */ 883 starget_printk(KERN_WARNING, tp->starget, 884 "Removing busy LCB (%d)\n", (u8)sdev->lun); 885 sym_reset_scsi_bus(np, 1); 886 } 887 888 if (sym_free_lcb(np, sdev->id, sdev->lun) == 0) { 889 /* 890 * It was the last unit for this target. 891 */ 892 tp->head.sval = 0; 893 tp->head.wval = np->rv_scntl3; 894 tp->head.uval = 0; 895 tp->tgoal.check_nego = 1; 896 tp->starget = NULL; 897 } 898 899 spin_unlock_irqrestore(np->s.host->host_lock, flags); 900} 901 902/* 903 * Linux entry point for info() function 904 */ 905static const char *sym53c8xx_info (struct Scsi_Host *host) 906{ 907 return SYM_DRIVER_NAME; 908} 909 910 911#ifdef SYM_LINUX_PROC_INFO_SUPPORT 912/* 913 * Proc file system stuff 914 * 915 * A read operation returns adapter information. 916 * A write operation is a control command. 917 * The string is parsed in the driver code and the command is passed 918 * to the sym_usercmd() function. 919 */ 920 921#ifdef SYM_LINUX_USER_COMMAND_SUPPORT 922 923struct sym_usrcmd { 924 u_long target; 925 u_long lun; 926 u_long data; 927 u_long cmd; 928}; 929 930#define UC_SETSYNC 10 931#define UC_SETTAGS 11 932#define UC_SETDEBUG 12 933#define UC_SETWIDE 14 934#define UC_SETFLAG 15 935#define UC_SETVERBOSE 17 936#define UC_RESETDEV 18 937#define UC_CLEARDEV 19 938 939static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc) 940{ 941 struct sym_tcb *tp; 942 int t, l; 943 944 switch (uc->cmd) { 945 case 0: return; 946 947#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 948 case UC_SETDEBUG: 949 sym_debug_flags = uc->data; 950 break; 951#endif 952 case UC_SETVERBOSE: 953 np->verbose = uc->data; 954 break; 955 default: 956 /* 957 * We assume that other commands apply to targets. 958 * This should always be the case and avoid the below 959 * 4 lines to be repeated 6 times. 960 */ 961 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) { 962 if (!((uc->target >> t) & 1)) 963 continue; 964 tp = &np->target[t]; 965 if (!tp->nlcb) 966 continue; 967 968 switch (uc->cmd) { 969 970 case UC_SETSYNC: 971 if (!uc->data || uc->data >= 255) { 972 tp->tgoal.iu = tp->tgoal.dt = 973 tp->tgoal.qas = 0; 974 tp->tgoal.offset = 0; 975 } else if (uc->data <= 9 && np->minsync_dt) { 976 if (uc->data < np->minsync_dt) 977 uc->data = np->minsync_dt; 978 tp->tgoal.iu = tp->tgoal.dt = 979 tp->tgoal.qas = 1; 980 tp->tgoal.width = 1; 981 tp->tgoal.period = uc->data; 982 tp->tgoal.offset = np->maxoffs_dt; 983 } else { 984 if (uc->data < np->minsync) 985 uc->data = np->minsync; 986 tp->tgoal.iu = tp->tgoal.dt = 987 tp->tgoal.qas = 0; 988 tp->tgoal.period = uc->data; 989 tp->tgoal.offset = np->maxoffs; 990 } 991 tp->tgoal.check_nego = 1; 992 break; 993 case UC_SETWIDE: 994 tp->tgoal.width = uc->data ? 1 : 0; 995 tp->tgoal.check_nego = 1; 996 break; 997 case UC_SETTAGS: 998 for (l = 0; l < SYM_CONF_MAX_LUN; l++) 999 sym_tune_dev_queuing(tp, l, uc->data); 1000 break; 1001 case UC_RESETDEV: 1002 tp->to_reset = 1; 1003 np->istat_sem = SEM; 1004 OUTB(np, nc_istat, SIGP|SEM); 1005 break; 1006 case UC_CLEARDEV: 1007 for (l = 0; l < SYM_CONF_MAX_LUN; l++) { 1008 struct sym_lcb *lp = sym_lp(tp, l); 1009 if (lp) lp->to_clear = 1; 1010 } 1011 np->istat_sem = SEM; 1012 OUTB(np, nc_istat, SIGP|SEM); 1013 break; 1014 case UC_SETFLAG: 1015 tp->usrflags = uc->data; 1016 break; 1017 } 1018 } 1019 break; 1020 } 1021} 1022 1023static int sym_skip_spaces(char *ptr, int len) 1024{ 1025 int cnt, c; 1026 1027 for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--); 1028 1029 return (len - cnt); 1030} 1031 1032static int get_int_arg(char *ptr, int len, u_long *pv) 1033{ 1034 char *end; 1035 1036 *pv = simple_strtoul(ptr, &end, 10); 1037 return (end - ptr); 1038} 1039 1040static int is_keyword(char *ptr, int len, char *verb) 1041{ 1042 int verb_len = strlen(verb); 1043 1044 if (len >= verb_len && !memcmp(verb, ptr, verb_len)) 1045 return verb_len; 1046 else 1047 return 0; 1048} 1049 1050#define SKIP_SPACES(ptr, len) \ 1051 if ((arg_len = sym_skip_spaces(ptr, len)) < 1) \ 1052 return -EINVAL; \ 1053 ptr += arg_len; len -= arg_len; 1054 1055#define GET_INT_ARG(ptr, len, v) \ 1056 if (!(arg_len = get_int_arg(ptr, len, &(v)))) \ 1057 return -EINVAL; \ 1058 ptr += arg_len; len -= arg_len; 1059 1060 1061/* 1062 * Parse a control command 1063 */ 1064 1065static int sym_user_command(struct Scsi_Host *shost, char *buffer, int length) 1066{ 1067 struct sym_hcb *np = sym_get_hcb(shost); 1068 char *ptr = buffer; 1069 int len = length; 1070 struct sym_usrcmd cmd, *uc = &cmd; 1071 int arg_len; 1072 u_long target; 1073 1074 memset(uc, 0, sizeof(*uc)); 1075 1076 if (len > 0 && ptr[len-1] == '\n') 1077 --len; 1078 1079 if ((arg_len = is_keyword(ptr, len, "setsync")) != 0) 1080 uc->cmd = UC_SETSYNC; 1081 else if ((arg_len = is_keyword(ptr, len, "settags")) != 0) 1082 uc->cmd = UC_SETTAGS; 1083 else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0) 1084 uc->cmd = UC_SETVERBOSE; 1085 else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0) 1086 uc->cmd = UC_SETWIDE; 1087#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1088 else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0) 1089 uc->cmd = UC_SETDEBUG; 1090#endif 1091 else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0) 1092 uc->cmd = UC_SETFLAG; 1093 else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0) 1094 uc->cmd = UC_RESETDEV; 1095 else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0) 1096 uc->cmd = UC_CLEARDEV; 1097 else 1098 arg_len = 0; 1099 1100#ifdef DEBUG_PROC_INFO 1101printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd); 1102#endif 1103 1104 if (!arg_len) 1105 return -EINVAL; 1106 ptr += arg_len; len -= arg_len; 1107 1108 switch(uc->cmd) { 1109 case UC_SETSYNC: 1110 case UC_SETTAGS: 1111 case UC_SETWIDE: 1112 case UC_SETFLAG: 1113 case UC_RESETDEV: 1114 case UC_CLEARDEV: 1115 SKIP_SPACES(ptr, len); 1116 if ((arg_len = is_keyword(ptr, len, "all")) != 0) { 1117 ptr += arg_len; len -= arg_len; 1118 uc->target = ~0; 1119 } else { 1120 GET_INT_ARG(ptr, len, target); 1121 uc->target = (1<<target); 1122#ifdef DEBUG_PROC_INFO 1123printk("sym_user_command: target=%ld\n", target); 1124#endif 1125 } 1126 break; 1127 } 1128 1129 switch(uc->cmd) { 1130 case UC_SETVERBOSE: 1131 case UC_SETSYNC: 1132 case UC_SETTAGS: 1133 case UC_SETWIDE: 1134 SKIP_SPACES(ptr, len); 1135 GET_INT_ARG(ptr, len, uc->data); 1136#ifdef DEBUG_PROC_INFO 1137printk("sym_user_command: data=%ld\n", uc->data); 1138#endif 1139 break; 1140#ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT 1141 case UC_SETDEBUG: 1142 while (len > 0) { 1143 SKIP_SPACES(ptr, len); 1144 if ((arg_len = is_keyword(ptr, len, "alloc"))) 1145 uc->data |= DEBUG_ALLOC; 1146 else if ((arg_len = is_keyword(ptr, len, "phase"))) 1147 uc->data |= DEBUG_PHASE; 1148 else if ((arg_len = is_keyword(ptr, len, "queue"))) 1149 uc->data |= DEBUG_QUEUE; 1150 else if ((arg_len = is_keyword(ptr, len, "result"))) 1151 uc->data |= DEBUG_RESULT; 1152 else if ((arg_len = is_keyword(ptr, len, "scatter"))) 1153 uc->data |= DEBUG_SCATTER; 1154 else if ((arg_len = is_keyword(ptr, len, "script"))) 1155 uc->data |= DEBUG_SCRIPT; 1156 else if ((arg_len = is_keyword(ptr, len, "tiny"))) 1157 uc->data |= DEBUG_TINY; 1158 else if ((arg_len = is_keyword(ptr, len, "timing"))) 1159 uc->data |= DEBUG_TIMING; 1160 else if ((arg_len = is_keyword(ptr, len, "nego"))) 1161 uc->data |= DEBUG_NEGO; 1162 else if ((arg_len = is_keyword(ptr, len, "tags"))) 1163 uc->data |= DEBUG_TAGS; 1164 else if ((arg_len = is_keyword(ptr, len, "pointer"))) 1165 uc->data |= DEBUG_POINTER; 1166 else 1167 return -EINVAL; 1168 ptr += arg_len; len -= arg_len; 1169 } 1170#ifdef DEBUG_PROC_INFO 1171printk("sym_user_command: data=%ld\n", uc->data); 1172#endif 1173 break; 1174#endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */ 1175 case UC_SETFLAG: 1176 while (len > 0) { 1177 SKIP_SPACES(ptr, len); 1178 if ((arg_len = is_keyword(ptr, len, "no_disc"))) 1179 uc->data &= ~SYM_DISC_ENABLED; 1180 else 1181 return -EINVAL; 1182 ptr += arg_len; len -= arg_len; 1183 } 1184 break; 1185 default: 1186 break; 1187 } 1188 1189 if (len) 1190 return -EINVAL; 1191 else { 1192 unsigned long flags; 1193 1194 spin_lock_irqsave(shost->host_lock, flags); 1195 sym_exec_user_command(np, uc); 1196 spin_unlock_irqrestore(shost->host_lock, flags); 1197 } 1198 return length; 1199} 1200 1201#endif /* SYM_LINUX_USER_COMMAND_SUPPORT */ 1202 1203 1204/* 1205 * Copy formatted information into the input buffer. 1206 */ 1207static int sym_show_info(struct seq_file *m, struct Scsi_Host *shost) 1208{ 1209#ifdef SYM_LINUX_USER_INFO_SUPPORT 1210 struct sym_data *sym_data = shost_priv(shost); 1211 struct pci_dev *pdev = sym_data->pdev; 1212 struct sym_hcb *np = sym_data->ncb; 1213 1214 seq_printf(m, "Chip " NAME53C "%s, device id 0x%x, " 1215 "revision id 0x%x\n", np->s.chip_name, 1216 pdev->device, pdev->revision); 1217 seq_printf(m, "At PCI address %s, IRQ %u\n", 1218 pci_name(pdev), pdev->irq); 1219 seq_printf(m, "Min. period factor %d, %s SCSI BUS%s\n", 1220 (int) (np->minsync_dt ? np->minsync_dt : np->minsync), 1221 np->maxwide ? "Wide" : "Narrow", 1222 np->minsync_dt ? ", DT capable" : ""); 1223 1224 seq_printf(m, "Max. started commands %d, " 1225 "max. commands per LUN %d\n", 1226 SYM_CONF_MAX_START, SYM_CONF_MAX_TAG); 1227 1228 return 0; 1229#else 1230 return -EINVAL; 1231#endif /* SYM_LINUX_USER_INFO_SUPPORT */ 1232} 1233 1234#endif /* SYM_LINUX_PROC_INFO_SUPPORT */ 1235 1236/* 1237 * Free resources claimed by sym_iomap_device(). Note that 1238 * sym_free_resources() should be used instead of this function after calling 1239 * sym_attach(). 1240 */ 1241static void sym_iounmap_device(struct sym_device *device) 1242{ 1243 if (device->s.ioaddr) 1244 pci_iounmap(device->pdev, device->s.ioaddr); 1245 if (device->s.ramaddr) 1246 pci_iounmap(device->pdev, device->s.ramaddr); 1247} 1248 1249/* 1250 * Free controller resources. 1251 */ 1252static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev, 1253 int do_free_irq) 1254{ 1255 /* 1256 * Free O/S specific resources. 1257 */ 1258 if (do_free_irq) 1259 free_irq(pdev->irq, np->s.host); 1260 if (np->s.ioaddr) 1261 pci_iounmap(pdev, np->s.ioaddr); 1262 if (np->s.ramaddr) 1263 pci_iounmap(pdev, np->s.ramaddr); 1264 /* 1265 * Free O/S independent resources. 1266 */ 1267 sym_hcb_free(np); 1268 1269 sym_mfree_dma(np, sizeof(*np), "HCB"); 1270} 1271 1272/* 1273 * Host attach and initialisations. 1274 * 1275 * Allocate host data and ncb structure. 1276 * Remap MMIO region. 1277 * Do chip initialization. 1278 * If all is OK, install interrupt handling and 1279 * start the timer daemon. 1280 */ 1281static struct Scsi_Host *sym_attach(const struct scsi_host_template *tpnt, int unit, 1282 struct sym_device *dev) 1283{ 1284 struct sym_data *sym_data; 1285 struct sym_hcb *np = NULL; 1286 struct Scsi_Host *shost = NULL; 1287 struct pci_dev *pdev = dev->pdev; 1288 unsigned long flags; 1289 struct sym_fw *fw; 1290 int do_free_irq = 0; 1291 1292 printk(KERN_INFO "sym%d: <%s> rev 0x%x at pci %s irq %u\n", 1293 unit, dev->chip.name, pdev->revision, pci_name(pdev), 1294 pdev->irq); 1295 1296 /* 1297 * Get the firmware for this chip. 1298 */ 1299 fw = sym_find_firmware(&dev->chip); 1300 if (!fw) 1301 goto attach_failed; 1302 1303 shost = scsi_host_alloc(tpnt, sizeof(*sym_data)); 1304 if (!shost) 1305 goto attach_failed; 1306 sym_data = shost_priv(shost); 1307 1308 /* 1309 * Allocate immediately the host control block, 1310 * since we are only expecting to succeed. :) 1311 * We keep track in the HCB of all the resources that 1312 * are to be released on error. 1313 */ 1314 np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB"); 1315 if (!np) 1316 goto attach_failed; 1317 np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */ 1318 sym_data->ncb = np; 1319 sym_data->pdev = pdev; 1320 np->s.host = shost; 1321 1322 pci_set_drvdata(pdev, shost); 1323 1324 /* 1325 * Copy some useful infos to the HCB. 1326 */ 1327 np->hcb_ba = vtobus(np); 1328 np->verbose = sym_driver_setup.verbose; 1329 np->s.unit = unit; 1330 np->features = dev->chip.features; 1331 np->clock_divn = dev->chip.nr_divisor; 1332 np->maxoffs = dev->chip.offset_max; 1333 np->maxburst = dev->chip.burst_max; 1334 np->myaddr = dev->host_id; 1335 np->mmio_ba = (u32)dev->mmio_base; 1336 np->ram_ba = (u32)dev->ram_base; 1337 np->s.ioaddr = dev->s.ioaddr; 1338 np->s.ramaddr = dev->s.ramaddr; 1339 1340 /* 1341 * Edit its name. 1342 */ 1343 strscpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name)); 1344 sprintf(np->s.inst_name, "sym%d", np->s.unit); 1345 1346 if ((SYM_CONF_DMA_ADDRESSING_MODE > 0) && (np->features & FE_DAC) && 1347 !dma_set_mask(&pdev->dev, DMA_DAC_MASK)) { 1348 set_dac(np); 1349 } else if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) { 1350 printf_warning("%s: No suitable DMA available\n", sym_name(np)); 1351 goto attach_failed; 1352 } 1353 1354 if (sym_hcb_attach(shost, fw, dev->nvram)) 1355 goto attach_failed; 1356 1357 /* 1358 * Install the interrupt handler. 1359 * If we synchonize the C code with SCRIPTS on interrupt, 1360 * we do not want to share the INTR line at all. 1361 */ 1362 if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, 1363 shost)) { 1364 printf_err("%s: request irq %u failure\n", 1365 sym_name(np), pdev->irq); 1366 goto attach_failed; 1367 } 1368 do_free_irq = 1; 1369 1370 /* 1371 * After SCSI devices have been opened, we cannot 1372 * reset the bus safely, so we do it here. 1373 */ 1374 spin_lock_irqsave(shost->host_lock, flags); 1375 if (sym_reset_scsi_bus(np, 0)) 1376 goto reset_failed; 1377 1378 /* 1379 * Start the SCRIPTS. 1380 */ 1381 sym_start_up(shost, 1); 1382 1383 /* 1384 * Start the timer daemon 1385 */ 1386 timer_setup(&np->s.timer, sym53c8xx_timer, 0); 1387 np->s.lasttime=0; 1388 sym_timer (np); 1389 1390 /* 1391 * Fill Linux host instance structure 1392 * and return success. 1393 */ 1394 shost->max_channel = 0; 1395 shost->this_id = np->myaddr; 1396 shost->max_id = np->maxwide ? 16 : 8; 1397 shost->max_lun = SYM_CONF_MAX_LUN; 1398 shost->unique_id = pci_resource_start(pdev, 0); 1399 shost->cmd_per_lun = SYM_CONF_MAX_TAG; 1400 shost->can_queue = (SYM_CONF_MAX_START-2); 1401 shost->sg_tablesize = SYM_CONF_MAX_SG; 1402 shost->max_cmd_len = 16; 1403 BUG_ON(sym2_transport_template == NULL); 1404 shost->transportt = sym2_transport_template; 1405 1406 /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */ 1407 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 2) 1408 shost->dma_boundary = 0xFFFFFF; 1409 1410 spin_unlock_irqrestore(shost->host_lock, flags); 1411 1412 return shost; 1413 1414 reset_failed: 1415 printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, " 1416 "TERMINATION, DEVICE POWER etc.!\n", sym_name(np)); 1417 spin_unlock_irqrestore(shost->host_lock, flags); 1418 attach_failed: 1419 printf_info("sym%d: giving up ...\n", unit); 1420 if (np) 1421 sym_free_resources(np, pdev, do_free_irq); 1422 else 1423 sym_iounmap_device(dev); 1424 if (shost) 1425 scsi_host_put(shost); 1426 1427 return NULL; 1428} 1429 1430 1431/* 1432 * Detect and try to read SYMBIOS and TEKRAM NVRAM. 1433 */ 1434#if SYM_CONF_NVRAM_SUPPORT 1435static void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1436{ 1437 devp->nvram = nvp; 1438 nvp->type = 0; 1439 1440 sym_read_nvram(devp, nvp); 1441} 1442#else 1443static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp) 1444{ 1445} 1446#endif /* SYM_CONF_NVRAM_SUPPORT */ 1447 1448static int sym_check_supported(struct sym_device *device) 1449{ 1450 struct sym_chip *chip; 1451 struct pci_dev *pdev = device->pdev; 1452 unsigned long io_port = pci_resource_start(pdev, 0); 1453 int i; 1454 1455 /* 1456 * If user excluded this chip, do not initialize it. 1457 * I hate this code so much. Must kill it. 1458 */ 1459 if (io_port) { 1460 for (i = 0 ; i < 8 ; i++) { 1461 if (sym_driver_setup.excludes[i] == io_port) 1462 return -ENODEV; 1463 } 1464 } 1465 1466 /* 1467 * Check if the chip is supported. Then copy the chip description 1468 * to our device structure so we can make it match the actual device 1469 * and options. 1470 */ 1471 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1472 if (!chip) { 1473 dev_info(&pdev->dev, "device not supported\n"); 1474 return -ENODEV; 1475 } 1476 memcpy(&device->chip, chip, sizeof(device->chip)); 1477 1478 return 0; 1479} 1480 1481/* 1482 * Ignore Symbios chips controlled by various RAID controllers. 1483 * These controllers set value 0x52414944 at RAM end - 16. 1484 */ 1485static int sym_check_raid(struct sym_device *device) 1486{ 1487 unsigned int ram_size, ram_val; 1488 1489 if (!device->s.ramaddr) 1490 return 0; 1491 1492 if (device->chip.features & FE_RAM8K) 1493 ram_size = 8192; 1494 else 1495 ram_size = 4096; 1496 1497 ram_val = readl(device->s.ramaddr + ram_size - 16); 1498 if (ram_val != 0x52414944) 1499 return 0; 1500 1501 dev_info(&device->pdev->dev, 1502 "not initializing, driven by RAID controller.\n"); 1503 return -ENODEV; 1504} 1505 1506static int sym_set_workarounds(struct sym_device *device) 1507{ 1508 struct sym_chip *chip = &device->chip; 1509 struct pci_dev *pdev = device->pdev; 1510 u_short status_reg; 1511 1512 /* 1513 * (ITEM 12 of a DEL about the 896 I haven't yet). 1514 * We must ensure the chip will use WRITE AND INVALIDATE. 1515 * The revision number limit is for now arbitrary. 1516 */ 1517 if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && pdev->revision < 0x4) { 1518 chip->features |= (FE_WRIE | FE_CLSE); 1519 } 1520 1521 /* If the chip can do Memory Write Invalidate, enable it */ 1522 if (chip->features & FE_WRIE) { 1523 if (pci_set_mwi(pdev)) 1524 return -ENODEV; 1525 } 1526 1527 /* 1528 * Work around for errant bit in 895A. The 66Mhz 1529 * capable bit is set erroneously. Clear this bit. 1530 * (Item 1 DEL 533) 1531 * 1532 * Make sure Config space and Features agree. 1533 * 1534 * Recall: writes are not normal to status register - 1535 * write a 1 to clear and a 0 to leave unchanged. 1536 * Can only reset bits. 1537 */ 1538 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1539 if (chip->features & FE_66MHZ) { 1540 if (!(status_reg & PCI_STATUS_66MHZ)) 1541 chip->features &= ~FE_66MHZ; 1542 } else { 1543 if (status_reg & PCI_STATUS_66MHZ) { 1544 status_reg = PCI_STATUS_66MHZ; 1545 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1546 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1547 } 1548 } 1549 1550 return 0; 1551} 1552 1553/* 1554 * Map HBA registers and on-chip SRAM (if present). 1555 */ 1556static int sym_iomap_device(struct sym_device *device) 1557{ 1558 struct pci_dev *pdev = device->pdev; 1559 struct pci_bus_region bus_addr; 1560 int i = 2; 1561 1562 pcibios_resource_to_bus(pdev->bus, &bus_addr, &pdev->resource[1]); 1563 device->mmio_base = bus_addr.start; 1564 1565 if (device->chip.features & FE_RAM) { 1566 /* 1567 * If the BAR is 64-bit, resource 2 will be occupied by the 1568 * upper 32 bits 1569 */ 1570 if (!pdev->resource[i].flags) 1571 i++; 1572 pcibios_resource_to_bus(pdev->bus, &bus_addr, 1573 &pdev->resource[i]); 1574 device->ram_base = bus_addr.start; 1575 } 1576 1577#ifdef CONFIG_SCSI_SYM53C8XX_MMIO 1578 if (device->mmio_base) 1579 device->s.ioaddr = pci_iomap(pdev, 1, 1580 pci_resource_len(pdev, 1)); 1581#endif 1582 if (!device->s.ioaddr) 1583 device->s.ioaddr = pci_iomap(pdev, 0, 1584 pci_resource_len(pdev, 0)); 1585 if (!device->s.ioaddr) { 1586 dev_err(&pdev->dev, "could not map registers; giving up.\n"); 1587 return -EIO; 1588 } 1589 if (device->ram_base) { 1590 device->s.ramaddr = pci_iomap(pdev, i, 1591 pci_resource_len(pdev, i)); 1592 if (!device->s.ramaddr) { 1593 dev_warn(&pdev->dev, 1594 "could not map SRAM; continuing anyway.\n"); 1595 device->ram_base = 0; 1596 } 1597 } 1598 1599 return 0; 1600} 1601 1602/* 1603 * The NCR PQS and PDS cards are constructed as a DEC bridge 1604 * behind which sits a proprietary NCR memory controller and 1605 * either four or two 53c875s as separate devices. We can tell 1606 * if an 875 is part of a PQS/PDS or not since if it is, it will 1607 * be on the same bus as the memory controller. In its usual 1608 * mode of operation, the 875s are slaved to the memory 1609 * controller for all transfers. To operate with the Linux 1610 * driver, the memory controller is disabled and the 875s 1611 * freed to function independently. The only wrinkle is that 1612 * the preset SCSI ID (which may be zero) must be read in from 1613 * a special configuration space register of the 875. 1614 */ 1615static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev) 1616{ 1617 int slot; 1618 u8 tmp; 1619 1620 for (slot = 0; slot < 256; slot++) { 1621 struct pci_dev *memc = pci_get_slot(pdev->bus, slot); 1622 1623 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) { 1624 pci_dev_put(memc); 1625 continue; 1626 } 1627 1628 /* bit 1: allow individual 875 configuration */ 1629 pci_read_config_byte(memc, 0x44, &tmp); 1630 if ((tmp & 0x2) == 0) { 1631 tmp |= 0x2; 1632 pci_write_config_byte(memc, 0x44, tmp); 1633 } 1634 1635 /* bit 2: drive individual 875 interrupts to the bus */ 1636 pci_read_config_byte(memc, 0x45, &tmp); 1637 if ((tmp & 0x4) == 0) { 1638 tmp |= 0x4; 1639 pci_write_config_byte(memc, 0x45, tmp); 1640 } 1641 1642 pci_dev_put(memc); 1643 break; 1644 } 1645 1646 pci_read_config_byte(pdev, 0x84, &tmp); 1647 sym_dev->host_id = tmp; 1648} 1649 1650/* 1651 * Called before unloading the module. 1652 * Detach the host. 1653 * We have to free resources and halt the NCR chip. 1654 */ 1655static int sym_detach(struct Scsi_Host *shost, struct pci_dev *pdev) 1656{ 1657 struct sym_hcb *np = sym_get_hcb(shost); 1658 printk("%s: detaching ...\n", sym_name(np)); 1659 1660 timer_delete_sync(&np->s.timer); 1661 1662 /* 1663 * Reset NCR chip. 1664 * We should use sym_soft_reset(), but we don't want to do 1665 * so, since we may not be safe if interrupts occur. 1666 */ 1667 printk("%s: resetting chip\n", sym_name(np)); 1668 OUTB(np, nc_istat, SRST); 1669 INB(np, nc_mbox1); 1670 udelay(10); 1671 OUTB(np, nc_istat, 0); 1672 1673 sym_free_resources(np, pdev, 1); 1674 scsi_host_put(shost); 1675 1676 return 1; 1677} 1678 1679/* 1680 * Driver host template. 1681 */ 1682static const struct scsi_host_template sym2_template = { 1683 .module = THIS_MODULE, 1684 .name = "sym53c8xx", 1685 .info = sym53c8xx_info, 1686 .cmd_size = sizeof(struct sym_ucmd), 1687 .queuecommand = sym53c8xx_queue_command, 1688 .sdev_init = sym53c8xx_sdev_init, 1689 .sdev_configure = sym53c8xx_sdev_configure, 1690 .sdev_destroy = sym53c8xx_sdev_destroy, 1691 .eh_abort_handler = sym53c8xx_eh_abort_handler, 1692 .eh_target_reset_handler = sym53c8xx_eh_target_reset_handler, 1693 .eh_bus_reset_handler = sym53c8xx_eh_bus_reset_handler, 1694 .eh_host_reset_handler = sym53c8xx_eh_host_reset_handler, 1695 .this_id = 7, 1696 .max_sectors = 0xFFFF, 1697#ifdef SYM_LINUX_PROC_INFO_SUPPORT 1698 .show_info = sym_show_info, 1699#ifdef SYM_LINUX_USER_COMMAND_SUPPORT 1700 .write_info = sym_user_command, 1701#endif 1702 .proc_name = NAME53C8XX, 1703#endif 1704}; 1705 1706static int attach_count; 1707 1708static int sym2_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 1709{ 1710 struct sym_device sym_dev; 1711 struct sym_nvram nvram; 1712 struct Scsi_Host *shost; 1713 int do_iounmap = 0; 1714 int do_disable_device = 1; 1715 1716 memset(&sym_dev, 0, sizeof(sym_dev)); 1717 memset(&nvram, 0, sizeof(nvram)); 1718 sym_dev.pdev = pdev; 1719 sym_dev.host_id = SYM_SETUP_HOST_ID; 1720 1721 if (pci_enable_device(pdev)) 1722 goto leave; 1723 1724 pci_set_master(pdev); 1725 1726 if (pci_request_regions(pdev, NAME53C8XX)) 1727 goto disable; 1728 1729 if (sym_check_supported(&sym_dev)) 1730 goto free; 1731 1732 if (sym_iomap_device(&sym_dev)) 1733 goto free; 1734 do_iounmap = 1; 1735 1736 if (sym_check_raid(&sym_dev)) { 1737 do_disable_device = 0; /* Don't disable the device */ 1738 goto free; 1739 } 1740 1741 if (sym_set_workarounds(&sym_dev)) 1742 goto free; 1743 1744 sym_config_pqs(pdev, &sym_dev); 1745 1746 sym_get_nvram(&sym_dev, &nvram); 1747 1748 do_iounmap = 0; /* Don't sym_iounmap_device() after sym_attach(). */ 1749 shost = sym_attach(&sym2_template, attach_count, &sym_dev); 1750 if (!shost) 1751 goto free; 1752 1753 if (scsi_add_host(shost, &pdev->dev)) 1754 goto detach; 1755 scsi_scan_host(shost); 1756 1757 attach_count++; 1758 1759 return 0; 1760 1761 detach: 1762 sym_detach(pci_get_drvdata(pdev), pdev); 1763 free: 1764 if (do_iounmap) 1765 sym_iounmap_device(&sym_dev); 1766 pci_release_regions(pdev); 1767 disable: 1768 if (do_disable_device) 1769 pci_disable_device(pdev); 1770 leave: 1771 return -ENODEV; 1772} 1773 1774static void sym2_remove(struct pci_dev *pdev) 1775{ 1776 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1777 1778 scsi_remove_host(shost); 1779 sym_detach(shost, pdev); 1780 pci_release_regions(pdev); 1781 pci_disable_device(pdev); 1782 1783 attach_count--; 1784} 1785 1786/** 1787 * sym2_io_error_detected() - called when PCI error is detected 1788 * @pdev: pointer to PCI device 1789 * @state: current state of the PCI slot 1790 */ 1791static pci_ers_result_t sym2_io_error_detected(struct pci_dev *pdev, 1792 pci_channel_state_t state) 1793{ 1794 /* If slot is permanently frozen, turn everything off */ 1795 if (state == pci_channel_io_perm_failure) { 1796 sym2_remove(pdev); 1797 return PCI_ERS_RESULT_DISCONNECT; 1798 } 1799 1800 disable_irq(pdev->irq); 1801 pci_disable_device(pdev); 1802 1803 /* Request that MMIO be enabled, so register dump can be taken. */ 1804 return PCI_ERS_RESULT_CAN_RECOVER; 1805} 1806 1807/** 1808 * sym2_io_slot_dump - Enable MMIO and dump debug registers 1809 * @pdev: pointer to PCI device 1810 */ 1811static pci_ers_result_t sym2_io_slot_dump(struct pci_dev *pdev) 1812{ 1813 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1814 1815 sym_dump_registers(shost); 1816 1817 /* Request a slot reset. */ 1818 return PCI_ERS_RESULT_NEED_RESET; 1819} 1820 1821/** 1822 * sym2_reset_workarounds - hardware-specific work-arounds 1823 * @pdev: pointer to PCI device 1824 * 1825 * This routine is similar to sym_set_workarounds(), except 1826 * that, at this point, we already know that the device was 1827 * successfully initialized at least once before, and so most 1828 * of the steps taken there are un-needed here. 1829 */ 1830static void sym2_reset_workarounds(struct pci_dev *pdev) 1831{ 1832 u_short status_reg; 1833 struct sym_chip *chip; 1834 1835 chip = sym_lookup_chip_table(pdev->device, pdev->revision); 1836 1837 /* Work around for errant bit in 895A, in a fashion 1838 * similar to what is done in sym_set_workarounds(). 1839 */ 1840 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1841 if (!(chip->features & FE_66MHZ) && (status_reg & PCI_STATUS_66MHZ)) { 1842 status_reg = PCI_STATUS_66MHZ; 1843 pci_write_config_word(pdev, PCI_STATUS, status_reg); 1844 pci_read_config_word(pdev, PCI_STATUS, &status_reg); 1845 } 1846} 1847 1848/** 1849 * sym2_io_slot_reset() - called when the pci bus has been reset. 1850 * @pdev: pointer to PCI device 1851 * 1852 * Restart the card from scratch. 1853 */ 1854static pci_ers_result_t sym2_io_slot_reset(struct pci_dev *pdev) 1855{ 1856 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1857 struct sym_hcb *np = sym_get_hcb(shost); 1858 1859 printk(KERN_INFO "%s: recovering from a PCI slot reset\n", 1860 sym_name(np)); 1861 1862 if (pci_enable_device(pdev)) { 1863 printk(KERN_ERR "%s: Unable to enable after PCI reset\n", 1864 sym_name(np)); 1865 return PCI_ERS_RESULT_DISCONNECT; 1866 } 1867 1868 pci_set_master(pdev); 1869 enable_irq(pdev->irq); 1870 1871 /* If the chip can do Memory Write Invalidate, enable it */ 1872 if (np->features & FE_WRIE) { 1873 if (pci_set_mwi(pdev)) 1874 return PCI_ERS_RESULT_DISCONNECT; 1875 } 1876 1877 /* Perform work-arounds, analogous to sym_set_workarounds() */ 1878 sym2_reset_workarounds(pdev); 1879 1880 /* Perform host reset only on one instance of the card */ 1881 if (PCI_FUNC(pdev->devfn) == 0) { 1882 if (sym_reset_scsi_bus(np, 0)) { 1883 printk(KERN_ERR "%s: Unable to reset scsi host\n", 1884 sym_name(np)); 1885 return PCI_ERS_RESULT_DISCONNECT; 1886 } 1887 sym_start_up(shost, 1); 1888 } 1889 1890 return PCI_ERS_RESULT_RECOVERED; 1891} 1892 1893/** 1894 * sym2_io_resume() - resume normal ops after PCI reset 1895 * @pdev: pointer to PCI device 1896 * 1897 * Called when the error recovery driver tells us that its 1898 * OK to resume normal operation. Use completion to allow 1899 * halted scsi ops to resume. 1900 */ 1901static void sym2_io_resume(struct pci_dev *pdev) 1902{ 1903 struct Scsi_Host *shost = pci_get_drvdata(pdev); 1904 struct sym_data *sym_data = shost_priv(shost); 1905 1906 spin_lock_irq(shost->host_lock); 1907 if (sym_data->io_reset) 1908 complete(sym_data->io_reset); 1909 spin_unlock_irq(shost->host_lock); 1910} 1911 1912static void sym2_get_signalling(struct Scsi_Host *shost) 1913{ 1914 struct sym_hcb *np = sym_get_hcb(shost); 1915 enum spi_signal_type type; 1916 1917 switch (np->scsi_mode) { 1918 case SMODE_SE: 1919 type = SPI_SIGNAL_SE; 1920 break; 1921 case SMODE_LVD: 1922 type = SPI_SIGNAL_LVD; 1923 break; 1924 case SMODE_HVD: 1925 type = SPI_SIGNAL_HVD; 1926 break; 1927 default: 1928 type = SPI_SIGNAL_UNKNOWN; 1929 break; 1930 } 1931 spi_signalling(shost) = type; 1932} 1933 1934static void sym2_set_offset(struct scsi_target *starget, int offset) 1935{ 1936 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1937 struct sym_hcb *np = sym_get_hcb(shost); 1938 struct sym_tcb *tp = &np->target[starget->id]; 1939 1940 tp->tgoal.offset = offset; 1941 tp->tgoal.check_nego = 1; 1942} 1943 1944static void sym2_set_period(struct scsi_target *starget, int period) 1945{ 1946 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1947 struct sym_hcb *np = sym_get_hcb(shost); 1948 struct sym_tcb *tp = &np->target[starget->id]; 1949 1950 /* have to have DT for these transfers, but DT will also 1951 * set width, so check that this is allowed */ 1952 if (period <= np->minsync && spi_width(starget)) 1953 tp->tgoal.dt = 1; 1954 1955 tp->tgoal.period = period; 1956 tp->tgoal.check_nego = 1; 1957} 1958 1959static void sym2_set_width(struct scsi_target *starget, int width) 1960{ 1961 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1962 struct sym_hcb *np = sym_get_hcb(shost); 1963 struct sym_tcb *tp = &np->target[starget->id]; 1964 1965 /* It is illegal to have DT set on narrow transfers. If DT is 1966 * clear, we must also clear IU and QAS. */ 1967 if (width == 0) 1968 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 1969 1970 tp->tgoal.width = width; 1971 tp->tgoal.check_nego = 1; 1972} 1973 1974static void sym2_set_dt(struct scsi_target *starget, int dt) 1975{ 1976 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1977 struct sym_hcb *np = sym_get_hcb(shost); 1978 struct sym_tcb *tp = &np->target[starget->id]; 1979 1980 /* We must clear QAS and IU if DT is clear */ 1981 if (dt) 1982 tp->tgoal.dt = 1; 1983 else 1984 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0; 1985 tp->tgoal.check_nego = 1; 1986} 1987 1988#if 0 1989static void sym2_set_iu(struct scsi_target *starget, int iu) 1990{ 1991 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 1992 struct sym_hcb *np = sym_get_hcb(shost); 1993 struct sym_tcb *tp = &np->target[starget->id]; 1994 1995 if (iu) 1996 tp->tgoal.iu = tp->tgoal.dt = 1; 1997 else 1998 tp->tgoal.iu = 0; 1999 tp->tgoal.check_nego = 1; 2000} 2001 2002static void sym2_set_qas(struct scsi_target *starget, int qas) 2003{ 2004 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 2005 struct sym_hcb *np = sym_get_hcb(shost); 2006 struct sym_tcb *tp = &np->target[starget->id]; 2007 2008 if (qas) 2009 tp->tgoal.dt = tp->tgoal.qas = 1; 2010 else 2011 tp->tgoal.qas = 0; 2012 tp->tgoal.check_nego = 1; 2013} 2014#endif 2015 2016static struct spi_function_template sym2_transport_functions = { 2017 .set_offset = sym2_set_offset, 2018 .show_offset = 1, 2019 .set_period = sym2_set_period, 2020 .show_period = 1, 2021 .set_width = sym2_set_width, 2022 .show_width = 1, 2023 .set_dt = sym2_set_dt, 2024 .show_dt = 1, 2025#if 0 2026 .set_iu = sym2_set_iu, 2027 .show_iu = 1, 2028 .set_qas = sym2_set_qas, 2029 .show_qas = 1, 2030#endif 2031 .get_signalling = sym2_get_signalling, 2032}; 2033 2034static const struct pci_device_id sym2_id_table[] = { 2035 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810, 2036 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2037 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820, 2038 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2039 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825, 2040 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2041 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815, 2042 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2043 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP, 2044 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */ 2045 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860, 2046 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2047 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510, 2048 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, 2049 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896, 2050 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2051 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895, 2052 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2053 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885, 2054 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2055 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875, 2056 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2057 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510, 2058 PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8, 0xffff00, 0UL }, /* new */ 2059 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A, 2060 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2061 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A, 2062 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2063 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33, 2064 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2065 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66, 2066 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2067 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J, 2068 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, 2069 { 0, } 2070}; 2071 2072MODULE_DEVICE_TABLE(pci, sym2_id_table); 2073 2074static const struct pci_error_handlers sym2_err_handler = { 2075 .error_detected = sym2_io_error_detected, 2076 .mmio_enabled = sym2_io_slot_dump, 2077 .slot_reset = sym2_io_slot_reset, 2078 .resume = sym2_io_resume, 2079}; 2080 2081static struct pci_driver sym2_driver = { 2082 .name = NAME53C8XX, 2083 .id_table = sym2_id_table, 2084 .probe = sym2_probe, 2085 .remove = sym2_remove, 2086 .err_handler = &sym2_err_handler, 2087}; 2088 2089static int __init sym2_init(void) 2090{ 2091 int error; 2092 2093 sym2_setup_params(); 2094 sym2_transport_template = spi_attach_transport(&sym2_transport_functions); 2095 if (!sym2_transport_template) 2096 return -ENODEV; 2097 2098 error = pci_register_driver(&sym2_driver); 2099 if (error) 2100 spi_release_transport(sym2_transport_template); 2101 return error; 2102} 2103 2104static void __exit sym2_exit(void) 2105{ 2106 pci_unregister_driver(&sym2_driver); 2107 spi_release_transport(sym2_transport_template); 2108} 2109 2110module_init(sym2_init); 2111module_exit(sym2_exit);
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