git.oblomov.eu Git - linux-2.6/blob - drivers/scsi/sym53c8xx_2/sym_glue.c

   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/interrupt.h>
  43 #include <linux/module.h>
  44 #include <linux/moduleparam.h>
  45 #include <linux/spinlock.h>
  46 #include <scsi/scsi.h>
  47 #include <scsi/scsi_tcq.h>
  48 #include <scsi/scsi_device.h>
  49 #include <scsi/scsi_transport.h>
  50
  51 #include "sym_glue.h"
  52 #include "sym_nvram.h"
  53
  54 #define NAME53C         "sym53c"
  55 #define NAME53C8XX      "sym53c8xx"
  56
  57 #define IRQ_FMT "%d"
  58 #define IRQ_PRM(x) (x)
  59
  60 struct sym_driver_setup sym_driver_setup = SYM_LINUX_DRIVER_SETUP;
  61 unsigned int sym_debug_flags = 0;
  62
  63 static char *excl_string;
  64 static char *safe_string;
  65 module_param_named(cmd_per_lun, sym_driver_setup.max_tag, ushort, 0);
  66 module_param_string(tag_ctrl, sym_driver_setup.tag_ctrl, 100, 0);
  67 module_param_named(burst, sym_driver_setup.burst_order, byte, 0);
  68 module_param_named(led, sym_driver_setup.scsi_led, byte, 0);
  69 module_param_named(diff, sym_driver_setup.scsi_diff, byte, 0);
  70 module_param_named(irqm, sym_driver_setup.irq_mode, byte, 0);
  71 module_param_named(buschk, sym_driver_setup.scsi_bus_check, byte, 0);
  72 module_param_named(hostid, sym_driver_setup.host_id, byte, 0);
  73 module_param_named(verb, sym_driver_setup.verbose, byte, 0);
  74 module_param_named(debug, sym_debug_flags, uint, 0);
  75 module_param_named(settle, sym_driver_setup.settle_delay, byte, 0);
  76 module_param_named(nvram, sym_driver_setup.use_nvram, byte, 0);
  77 module_param_named(excl, excl_string, charp, 0);
  78 module_param_named(safe, safe_string, charp, 0);
  79
  80 MODULE_PARM_DESC(cmd_per_lun, "The maximum number of tags to use by default");
  81 MODULE_PARM_DESC(tag_ctrl, "More detailed control over tags per LUN");
  82 MODULE_PARM_DESC(burst, "Maximum burst.  0 to disable, 255 to read from registers");
  83 MODULE_PARM_DESC(led, "Set to 1 to enable LED support");
  84 MODULE_PARM_DESC(diff, "0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3");
  85 MODULE_PARM_DESC(irqm, "0 for open drain, 1 to leave alone, 2 for totem pole");
  86 MODULE_PARM_DESC(buschk, "0 to not check, 1 for detach on error, 2 for warn on error");
  87 MODULE_PARM_DESC(hostid, "The SCSI ID to use for the host adapters");
  88 MODULE_PARM_DESC(verb, "0 for minimal verbosity, 1 for normal, 2 for excessive");
  89 MODULE_PARM_DESC(debug, "Set bits to enable debugging");
  90 MODULE_PARM_DESC(settle, "Settle delay in seconds.  Default 3");
  91 MODULE_PARM_DESC(nvram, "Option currently not used");
  92 MODULE_PARM_DESC(excl, "List ioport addresses here to prevent controllers from being attached");
  93 MODULE_PARM_DESC(safe, "Set other settings to a \"safe mode\"");
  94
  95 MODULE_LICENSE("GPL");
  96 MODULE_VERSION(SYM_VERSION);
  97 MODULE_AUTHOR("Matthew Wilcox <matthew@wil.cx>");
  98 MODULE_DESCRIPTION("NCR, Symbios and LSI 8xx and 1010 PCI SCSI adapters");
  99
 100 static void sym2_setup_params(void)
 101 {
 102         char *p = excl_string;
 103         int xi = 0;
 104
 105         while (p && (xi < 8)) {
 106                 char *next_p;
 107                 int val = (int) simple_strtoul(p, &next_p, 0);
 108                 sym_driver_setup.excludes[xi++] = val;
 109                 p = next_p;
 110         }
 111
 112         if (safe_string) {
 113                 if (*safe_string == 'y') {
 114                         sym_driver_setup.max_tag = 0;
 115                         sym_driver_setup.burst_order = 0;
 116                         sym_driver_setup.scsi_led = 0;
 117                         sym_driver_setup.scsi_diff = 1;
 118                         sym_driver_setup.irq_mode = 0;
 119                         sym_driver_setup.scsi_bus_check = 2;
 120                         sym_driver_setup.host_id = 7;
 121                         sym_driver_setup.verbose = 2;
 122                         sym_driver_setup.settle_delay = 10;
 123                         sym_driver_setup.use_nvram = 1;
 124                 } else if (*safe_string != 'n') {
 125                         printk(KERN_WARNING NAME53C8XX "Ignoring parameter %s"
 126                                         " passed to safe option", safe_string);
 127                 }
 128         }
 129 }
 130
 131 static struct scsi_transport_template *sym2_transport_template = NULL;
 132
 133 /*
 134  *  Driver private area in the SCSI command structure.
 135  */
 136 struct sym_ucmd {               /* Override the SCSI pointer structure */
 137         struct completion *eh_done;             /* For error handling */
 138 };
 139
 140 #define SYM_UCMD_PTR(cmd)  ((struct sym_ucmd *)(&(cmd)->SCp))
 141 #define SYM_SOFTC_PTR(cmd) sym_get_hcb(cmd->device->host)
 142
 143 /*
 144  *  Complete a pending CAM CCB.
 145  */
 146 void sym_xpt_done(struct sym_hcb *np, struct scsi_cmnd *cmd)
 147 {
 148         struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
 149         BUILD_BUG_ON(sizeof(struct scsi_pointer) < sizeof(struct sym_ucmd));
 150
 151         if (ucmd->eh_done)
 152                 complete(ucmd->eh_done);
 153
 154         scsi_dma_unmap(cmd);
 155         cmd->scsi_done(cmd);
 156 }
 157
 158 /*
 159  *  Tell the SCSI layer about a BUS RESET.
 160  */
 161 void sym_xpt_async_bus_reset(struct sym_hcb *np)
 162 {
 163         printf_notice("%s: SCSI BUS has been reset.\n", sym_name(np));
 164         np->s.settle_time = jiffies + sym_driver_setup.settle_delay * HZ;
 165         np->s.settle_time_valid = 1;
 166         if (sym_verbose >= 2)
 167                 printf_info("%s: command processing suspended for %d seconds\n",
 168                             sym_name(np), sym_driver_setup.settle_delay);
 169 }
 170
 171 /*
 172  *  Tell the SCSI layer about a BUS DEVICE RESET message sent.
 173  */
 174 void sym_xpt_async_sent_bdr(struct sym_hcb *np, int target)
 175 {
 176         printf_notice("%s: TARGET %d has been reset.\n", sym_name(np), target);
 177 }
 178
 179 /*
 180  *  Choose the more appropriate CAM status if
 181  *  the IO encountered an extended error.
 182  */
 183 static int sym_xerr_cam_status(int cam_status, int x_status)
 184 {
 185         if (x_status) {
 186                 if      (x_status & XE_PARITY_ERR)
 187                         cam_status = DID_PARITY;
 188                 else if (x_status &(XE_EXTRA_DATA|XE_SODL_UNRUN|XE_SWIDE_OVRUN))
 189                         cam_status = DID_ERROR;
 190                 else if (x_status & XE_BAD_PHASE)
 191                         cam_status = DID_ERROR;
 192                 else
 193                         cam_status = DID_ERROR;
 194         }
 195         return cam_status;
 196 }
 197
 198 /*
 199  *  Build CAM result for a failed or auto-sensed IO.
 200  */
 201 void sym_set_cam_result_error(struct sym_hcb *np, struct sym_ccb *cp, int resid)
 202 {
 203         struct scsi_cmnd *cmd = cp->cmd;
 204         u_int cam_status, scsi_status, drv_status;
 205
 206         drv_status  = 0;
 207         cam_status  = DID_OK;
 208         scsi_status = cp->ssss_status;
 209
 210         if (cp->host_flags & HF_SENSE) {
 211                 scsi_status = cp->sv_scsi_status;
 212                 resid = cp->sv_resid;
 213                 if (sym_verbose && cp->sv_xerr_status)
 214                         sym_print_xerr(cmd, cp->sv_xerr_status);
 215                 if (cp->host_status == HS_COMPLETE &&
 216                     cp->ssss_status == S_GOOD &&
 217                     cp->xerr_status == 0) {
 218                         cam_status = sym_xerr_cam_status(DID_OK,
 219                                                          cp->sv_xerr_status);
 220                         drv_status = DRIVER_SENSE;
 221                         /*
 222                          *  Bounce back the sense data to user.
 223                          */
 224                         memset(&cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
 225                         memcpy(cmd->sense_buffer, cp->sns_bbuf,
 226                               min(sizeof(cmd->sense_buffer),
 227                                   (size_t)SYM_SNS_BBUF_LEN));
 228 #if 0
 229                         /*
 230                          *  If the device reports a UNIT ATTENTION condition
 231                          *  due to a RESET condition, we should consider all
 232                          *  disconnect CCBs for this unit as aborted.
 233                          */
 234                         if (1) {
 235                                 u_char *p;
 236                                 p  = (u_char *) cmd->sense_data;
 237                                 if (p[0]==0x70 && p[2]==0x6 && p[12]==0x29)
 238                                         sym_clear_tasks(np, DID_ABORT,
 239                                                         cp->target,cp->lun, -1);
 240                         }
 241 #endif
 242                 } else {
 243                         /*
 244                          * Error return from our internal request sense.  This
 245                          * is bad: we must clear the contingent allegiance
 246                          * condition otherwise the device will always return
 247                          * BUSY.  Use a big stick.
 248                          */
 249                         sym_reset_scsi_target(np, cmd->device->id);
 250                         cam_status = DID_ERROR;
 251                 }
 252         } else if (cp->host_status == HS_COMPLETE)      /* Bad SCSI status */
 253                 cam_status = DID_OK;
 254         else if (cp->host_status == HS_SEL_TIMEOUT)     /* Selection timeout */
 255                 cam_status = DID_NO_CONNECT;
 256         else if (cp->host_status == HS_UNEXPECTED)      /* Unexpected BUS FREE*/
 257                 cam_status = DID_ERROR;
 258         else {                                          /* Extended error */
 259                 if (sym_verbose) {
 260                         sym_print_addr(cmd, "COMMAND FAILED (%x %x %x).\n",
 261                                 cp->host_status, cp->ssss_status,
 262                                 cp->xerr_status);
 263                 }
 264                 /*
 265                  *  Set the most appropriate value for CAM status.
 266                  */
 267                 cam_status = sym_xerr_cam_status(DID_ERROR, cp->xerr_status);
 268         }
 269         scsi_set_resid(cmd, resid);
 270         cmd->result = (drv_status << 24) + (cam_status << 16) + scsi_status;
 271 }
 272
 273 static int sym_scatter(struct sym_hcb *np, struct sym_ccb *cp, struct scsi_cmnd *cmd)
 274 {
 275         int segment;
 276         int use_sg;
 277
 278         cp->data_len = 0;
 279
 280         use_sg = scsi_dma_map(cmd);
 281         if (use_sg > 0) {
 282                 struct scatterlist *sg;
 283                 struct sym_tcb *tp = &np->target[cp->target];
 284                 struct sym_tblmove *data;
 285
 286                 if (use_sg > SYM_CONF_MAX_SG) {
 287                         scsi_dma_unmap(cmd);
 288                         return -1;
 289                 }
 290
 291                 data = &cp->phys.data[SYM_CONF_MAX_SG - use_sg];
 292
 293                 scsi_for_each_sg(cmd, sg, use_sg, segment) {
 294                         dma_addr_t baddr = sg_dma_address(sg);
 295                         unsigned int len = sg_dma_len(sg);
 296
 297                         if ((len & 1) && (tp->head.wval & EWS)) {
 298                                 len++;
 299                                 cp->odd_byte_adjustment++;
 300                         }
 301
 302                         sym_build_sge(np, &data[segment], baddr, len);
 303                         cp->data_len += len;
 304                 }
 305         } else {
 306                 segment = -2;
 307         }
 308
 309         return segment;
 310 }
 311
 312 /*
 313  *  Queue a SCSI command.
 314  */
 315 static int sym_queue_command(struct sym_hcb *np, struct scsi_cmnd *cmd)
 316 {
 317         struct scsi_device *sdev = cmd->device;
 318         struct sym_tcb *tp;
 319         struct sym_lcb *lp;
 320         struct sym_ccb *cp;
 321         int     order;
 322
 323         /*
 324          *  Retrieve the target descriptor.
 325          */
 326         tp = &np->target[sdev->id];
 327
 328         /*
 329          *  Select tagged/untagged.
 330          */
 331         lp = sym_lp(tp, sdev->lun);
 332         order = (lp && lp->s.reqtags) ? M_SIMPLE_TAG : 0;
 333
 334         /*
 335          *  Queue the SCSI IO.
 336          */
 337         cp = sym_get_ccb(np, cmd, order);
 338         if (!cp)
 339                 return 1;       /* Means resource shortage */
 340         sym_queue_scsiio(np, cmd, cp);
 341         return 0;
 342 }
 343
 344 /*
 345  *  Setup buffers and pointers that address the CDB.
 346  */
 347 static inline int sym_setup_cdb(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
 348 {
 349         memcpy(cp->cdb_buf, cmd->cmnd, cmd->cmd_len);
 350
 351         cp->phys.cmd.addr = CCB_BA(cp, cdb_buf[0]);
 352         cp->phys.cmd.size = cpu_to_scr(cmd->cmd_len);
 353
 354         return 0;
 355 }
 356
 357 /*
 358  *  Setup pointers that address the data and start the I/O.
 359  */
 360 int sym_setup_data_and_start(struct sym_hcb *np, struct scsi_cmnd *cmd, struct sym_ccb *cp)
 361 {
 362         u32 lastp, goalp;
 363         int dir;
 364
 365         /*
 366          *  Build the CDB.
 367          */
 368         if (sym_setup_cdb(np, cmd, cp))
 369                 goto out_abort;
 370
 371         /*
 372          *  No direction means no data.
 373          */
 374         dir = cmd->sc_data_direction;
 375         if (dir != DMA_NONE) {
 376                 cp->segments = sym_scatter(np, cp, cmd);
 377                 if (cp->segments < 0) {
 378                         sym_set_cam_status(cmd, DID_ERROR);
 379                         goto out_abort;
 380                 }
 381
 382                 /*
 383                  *  No segments means no data.
 384                  */
 385                 if (!cp->segments)
 386                         dir = DMA_NONE;
 387         } else {
 388                 cp->data_len = 0;
 389                 cp->segments = 0;
 390         }
 391
 392         /*
 393          *  Set the data pointer.
 394          */
 395         switch (dir) {
 396         case DMA_BIDIRECTIONAL:
 397                 printk("%s: got DMA_BIDIRECTIONAL command", sym_name(np));
 398                 sym_set_cam_status(cmd, DID_ERROR);
 399                 goto out_abort;
 400         case DMA_TO_DEVICE:
 401                 goalp = SCRIPTA_BA(np, data_out2) + 8;
 402                 lastp = goalp - 8 - (cp->segments * (2*4));
 403                 break;
 404         case DMA_FROM_DEVICE:
 405                 cp->host_flags |= HF_DATA_IN;
 406                 goalp = SCRIPTA_BA(np, data_in2) + 8;
 407                 lastp = goalp - 8 - (cp->segments * (2*4));
 408                 break;
 409         case DMA_NONE:
 410         default:
 411                 lastp = goalp = SCRIPTB_BA(np, no_data);
 412                 break;
 413         }
 414
 415         /*
 416          *  Set all pointers values needed by SCRIPTS.
 417          */
 418         cp->phys.head.lastp = cpu_to_scr(lastp);
 419         cp->phys.head.savep = cpu_to_scr(lastp);
 420         cp->startp          = cp->phys.head.savep;
 421         cp->goalp           = cpu_to_scr(goalp);
 422
 423         /*
 424          *  When `#ifed 1', the code below makes the driver
 425          *  panic on the first attempt to write to a SCSI device.
 426          *  It is the first test we want to do after a driver
 427          *  change that does not seem obviously safe. :)
 428          */
 429 #if 0
 430         switch (cp->cdb_buf[0]) {
 431         case 0x0A: case 0x2A: case 0xAA:
 432                 panic("XXXXXXXXXXXXX WRITE NOT YET ALLOWED XXXXXXXXXXXXXX\n");
 433                 break;
 434         default:
 435                 break;
 436         }
 437 #endif
 438
 439         /*
 440          *      activate this job.
 441          */
 442         sym_put_start_queue(np, cp);
 443         return 0;
 444
 445 out_abort:
 446         sym_free_ccb(np, cp);
 447         sym_xpt_done(np, cmd);
 448         return 0;
 449 }
 450
 451
 452 /*
 453  *  timer daemon.
 454  *
 455  *  Misused to keep the driver running when
 456  *  interrupts are not configured correctly.
 457  */
 458 static void sym_timer(struct sym_hcb *np)
 459 {
 460         unsigned long thistime = jiffies;
 461
 462         /*
 463          *  Restart the timer.
 464          */
 465         np->s.timer.expires = thistime + SYM_CONF_TIMER_INTERVAL;
 466         add_timer(&np->s.timer);
 467
 468         /*
 469          *  If we are resetting the ncr, wait for settle_time before
 470          *  clearing it. Then command processing will be resumed.
 471          */
 472         if (np->s.settle_time_valid) {
 473                 if (time_before_eq(np->s.settle_time, thistime)) {
 474                         if (sym_verbose >= 2 )
 475                                 printk("%s: command processing resumed\n",
 476                                        sym_name(np));
 477                         np->s.settle_time_valid = 0;
 478                 }
 479                 return;
 480         }
 481
 482         /*
 483          *      Nothing to do for now, but that may come.
 484          */
 485         if (np->s.lasttime + 4*HZ < thistime) {
 486                 np->s.lasttime = thistime;
 487         }
 488
 489 #ifdef SYM_CONF_PCIQ_MAY_MISS_COMPLETIONS
 490         /*
 491          *  Some way-broken PCI bridges may lead to
 492          *  completions being lost when the clearing
 493          *  of the INTFLY flag by the CPU occurs
 494          *  concurrently with the chip raising this flag.
 495          *  If this ever happen, lost completions will
 496          * be reaped here.
 497          */
 498         sym_wakeup_done(np);
 499 #endif
 500 }
 501
 502
 503 /*
 504  *  PCI BUS error handler.
 505  */
 506 void sym_log_bus_error(struct sym_hcb *np)
 507 {
 508         u_short pci_sts;
 509         pci_read_config_word(np->s.device, PCI_STATUS, &pci_sts);
 510         if (pci_sts & 0xf900) {
 511                 pci_write_config_word(np->s.device, PCI_STATUS, pci_sts);
 512                 printf("%s: PCI STATUS = 0x%04x\n",
 513                         sym_name(np), pci_sts & 0xf900);
 514         }
 515 }
 516
 517 /*
 518  * queuecommand method.  Entered with the host adapter lock held and
 519  * interrupts disabled.
 520  */
 521 static int sym53c8xx_queue_command(struct scsi_cmnd *cmd,
 522                                         void (*done)(struct scsi_cmnd *))
 523 {
 524         struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
 525         struct sym_ucmd *ucp = SYM_UCMD_PTR(cmd);
 526         int sts = 0;
 527
 528         cmd->scsi_done = done;
 529         memset(ucp, 0, sizeof(*ucp));
 530
 531         /*
 532          *  Shorten our settle_time if needed for
 533          *  this command not to time out.
 534          */
 535         if (np->s.settle_time_valid && cmd->timeout_per_command) {
 536                 unsigned long tlimit = jiffies + cmd->timeout_per_command;
 537                 tlimit -= SYM_CONF_TIMER_INTERVAL*2;
 538                 if (time_after(np->s.settle_time, tlimit)) {
 539                         np->s.settle_time = tlimit;
 540                 }
 541         }
 542
 543         if (np->s.settle_time_valid)
 544                 return SCSI_MLQUEUE_HOST_BUSY;
 545
 546         sts = sym_queue_command(np, cmd);
 547         if (sts)
 548                 return SCSI_MLQUEUE_HOST_BUSY;
 549         return 0;
 550 }
 551
 552 /*
 553  *  Linux entry point of the interrupt handler.
 554  */
 555 static irqreturn_t sym53c8xx_intr(int irq, void *dev_id)
 556 {
 557         struct sym_hcb *np = dev_id;
 558
 559         if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("[");
 560
 561         spin_lock(np->s.host->host_lock);
 562         sym_interrupt(np);
 563         spin_unlock(np->s.host->host_lock);
 564
 565         if (DEBUG_FLAGS & DEBUG_TINY) printf_debug ("]\n");
 566
 567         return IRQ_HANDLED;
 568 }
 569
 570 /*
 571  *  Linux entry point of the timer handler
 572  */
 573 static void sym53c8xx_timer(unsigned long npref)
 574 {
 575         struct sym_hcb *np = (struct sym_hcb *)npref;
 576         unsigned long flags;
 577
 578         spin_lock_irqsave(np->s.host->host_lock, flags);
 579         sym_timer(np);
 580         spin_unlock_irqrestore(np->s.host->host_lock, flags);
 581 }
 582
 583
 584 /*
 585  *  What the eh thread wants us to perform.
 586  */
 587 #define SYM_EH_ABORT            0
 588 #define SYM_EH_DEVICE_RESET     1
 589 #define SYM_EH_BUS_RESET        2
 590 #define SYM_EH_HOST_RESET       3
 591
 592 /*
 593  *  Generic method for our eh processing.
 594  *  The 'op' argument tells what we have to do.
 595  */
 596 static int sym_eh_handler(int op, char *opname, struct scsi_cmnd *cmd)
 597 {
 598         struct sym_hcb *np = SYM_SOFTC_PTR(cmd);
 599         struct sym_ucmd *ucmd = SYM_UCMD_PTR(cmd);
 600         struct Scsi_Host *host = cmd->device->host;
 601         SYM_QUEHEAD *qp;
 602         int cmd_queued = 0;
 603         int sts = -1;
 604         struct completion eh_done;
 605
 606         dev_warn(&cmd->device->sdev_gendev, "%s operation started.\n", opname);
 607
 608         spin_lock_irq(host->host_lock);
 609         /* This one is queued in some place -> to wait for completion */
 610         FOR_EACH_QUEUED_ELEMENT(&np->busy_ccbq, qp) {
 611                 struct sym_ccb *cp = sym_que_entry(qp, struct sym_ccb, link_ccbq);
 612                 if (cp->cmd == cmd) {
 613                         cmd_queued = 1;
 614                         break;
 615                 }
 616         }
 617
 618         /* Try to proceed the operation we have been asked for */
 619         sts = -1;
 620         switch(op) {
 621         case SYM_EH_ABORT:
 622                 sts = sym_abort_scsiio(np, cmd, 1);
 623                 break;
 624         case SYM_EH_DEVICE_RESET:
 625                 sts = sym_reset_scsi_target(np, cmd->device->id);
 626                 break;
 627         case SYM_EH_BUS_RESET:
 628                 sym_reset_scsi_bus(np, 1);
 629                 sts = 0;
 630                 break;
 631         case SYM_EH_HOST_RESET:
 632                 sym_reset_scsi_bus(np, 0);
 633                 sym_start_up (np, 1);
 634                 sts = 0;
 635                 break;
 636         default:
 637                 break;
 638         }
 639
 640         /* On error, restore everything and cross fingers :) */
 641         if (sts)
 642                 cmd_queued = 0;
 643
 644         if (cmd_queued) {
 645                 init_completion(&eh_done);
 646                 ucmd->eh_done = &eh_done;
 647                 spin_unlock_irq(host->host_lock);
 648                 if (!wait_for_completion_timeout(&eh_done, 5*HZ)) {
 649                         ucmd->eh_done = NULL;
 650                         sts = -2;
 651                 }
 652         } else {
 653                 spin_unlock_irq(host->host_lock);
 654         }
 655
 656         dev_warn(&cmd->device->sdev_gendev, "%s operation %s.\n", opname,
 657                         sts==0 ? "complete" :sts==-2 ? "timed-out" : "failed");
 658         return sts ? SCSI_FAILED : SCSI_SUCCESS;
 659 }
 660
 661
 662 /*
 663  * Error handlers called from the eh thread (one thread per HBA).
 664  */
 665 static int sym53c8xx_eh_abort_handler(struct scsi_cmnd *cmd)
 666 {
 667         return sym_eh_handler(SYM_EH_ABORT, "ABORT", cmd);
 668 }
 669
 670 static int sym53c8xx_eh_device_reset_handler(struct scsi_cmnd *cmd)
 671 {
 672         return sym_eh_handler(SYM_EH_DEVICE_RESET, "DEVICE RESET", cmd);
 673 }
 674
 675 static int sym53c8xx_eh_bus_reset_handler(struct scsi_cmnd *cmd)
 676 {
 677         return sym_eh_handler(SYM_EH_BUS_RESET, "BUS RESET", cmd);
 678 }
 679
 680 static int sym53c8xx_eh_host_reset_handler(struct scsi_cmnd *cmd)
 681 {
 682         return sym_eh_handler(SYM_EH_HOST_RESET, "HOST RESET", cmd);
 683 }
 684
 685 /*
 686  *  Tune device queuing depth, according to various limits.
 687  */
 688 static void sym_tune_dev_queuing(struct sym_tcb *tp, int lun, u_short reqtags)
 689 {
 690         struct sym_lcb *lp = sym_lp(tp, lun);
 691         u_short oldtags;
 692
 693         if (!lp)
 694                 return;
 695
 696         oldtags = lp->s.reqtags;
 697
 698         if (reqtags > lp->s.scdev_depth)
 699                 reqtags = lp->s.scdev_depth;
 700
 701         lp->s.reqtags     = reqtags;
 702
 703         if (reqtags != oldtags) {
 704                 dev_info(&tp->starget->dev,
 705                          "tagged command queuing %s, command queue depth %d.\n",
 706                           lp->s.reqtags ? "enabled" : "disabled", reqtags);
 707         }
 708 }
 709
 710 /*
 711  *  Linux select queue depths function
 712  */
 713 #define DEF_DEPTH       (sym_driver_setup.max_tag)
 714 #define ALL_TARGETS     -2
 715 #define NO_TARGET       -1
 716 #define ALL_LUNS        -2
 717 #define NO_LUN          -1
 718
 719 static int device_queue_depth(struct sym_hcb *np, int target, int lun)
 720 {
 721         int c, h, t, u, v;
 722         char *p = sym_driver_setup.tag_ctrl;
 723         char *ep;
 724
 725         h = -1;
 726         t = NO_TARGET;
 727         u = NO_LUN;
 728         while ((c = *p++) != 0) {
 729                 v = simple_strtoul(p, &ep, 0);
 730                 switch(c) {
 731                 case '/':
 732                         ++h;
 733                         t = ALL_TARGETS;
 734                         u = ALL_LUNS;
 735                         break;
 736                 case 't':
 737                         if (t != target)
 738                                 t = (target == v) ? v : NO_TARGET;
 739                         u = ALL_LUNS;
 740                         break;
 741                 case 'u':
 742                         if (u != lun)
 743                                 u = (lun == v) ? v : NO_LUN;
 744                         break;
 745                 case 'q':
 746                         if (h == np->s.unit &&
 747                                 (t == ALL_TARGETS || t == target) &&
 748                                 (u == ALL_LUNS    || u == lun))
 749                                 return v;
 750                         break;
 751                 case '-':
 752                         t = ALL_TARGETS;
 753                         u = ALL_LUNS;
 754                         break;
 755                 default:
 756                         break;
 757                 }
 758                 p = ep;
 759         }
 760         return DEF_DEPTH;
 761 }
 762
 763 static int sym53c8xx_slave_alloc(struct scsi_device *sdev)
 764 {
 765         struct sym_hcb *np = sym_get_hcb(sdev->host);
 766         struct sym_tcb *tp = &np->target[sdev->id];
 767         struct sym_lcb *lp;
 768
 769         if (sdev->id >= SYM_CONF_MAX_TARGET || sdev->lun >= SYM_CONF_MAX_LUN)
 770                 return -ENXIO;
 771
 772         tp->starget = sdev->sdev_target;
 773         /*
 774          * Fail the device init if the device is flagged NOSCAN at BOOT in
 775          * the NVRAM.  This may speed up boot and maintain coherency with
 776          * BIOS device numbering.  Clearing the flag allows the user to
 777          * rescan skipped devices later.  We also return an error for
 778          * devices not flagged for SCAN LUNS in the NVRAM since some single
 779          * lun devices behave badly when asked for a non zero LUN.
 780          */
 781
 782         if (tp->usrflags & SYM_SCAN_BOOT_DISABLED) {
 783                 tp->usrflags &= ~SYM_SCAN_BOOT_DISABLED;
 784                 starget_printk(KERN_INFO, tp->starget,
 785                                 "Scan at boot disabled in NVRAM\n");
 786                 return -ENXIO;
 787         }
 788
 789         if (tp->usrflags & SYM_SCAN_LUNS_DISABLED) {
 790                 if (sdev->lun != 0)
 791                         return -ENXIO;
 792                 starget_printk(KERN_INFO, tp->starget,
 793                                 "Multiple LUNs disabled in NVRAM\n");
 794         }
 795
 796         lp = sym_alloc_lcb(np, sdev->id, sdev->lun);
 797         if (!lp)
 798                 return -ENOMEM;
 799
 800         spi_min_period(tp->starget) = tp->usr_period;
 801         spi_max_width(tp->starget) = tp->usr_width;
 802
 803         return 0;
 804 }
 805
 806 /*
 807  * Linux entry point for device queue sizing.
 808  */
 809 static int sym53c8xx_slave_configure(struct scsi_device *sdev)
 810 {
 811         struct sym_hcb *np = sym_get_hcb(sdev->host);
 812         struct sym_tcb *tp = &np->target[sdev->id];
 813         struct sym_lcb *lp = sym_lp(tp, sdev->lun);
 814         int reqtags, depth_to_use;
 815
 816         /*
 817          *  Get user flags.
 818          */
 819         lp->curr_flags = lp->user_flags;
 820
 821         /*
 822          *  Select queue depth from driver setup.
 823          *  Donnot use more than configured by user.
 824          *  Use at least 2.
 825          *  Donnot use more than our maximum.
 826          */
 827         reqtags = device_queue_depth(np, sdev->id, sdev->lun);
 828         if (reqtags > tp->usrtags)
 829                 reqtags = tp->usrtags;
 830         if (!sdev->tagged_supported)
 831                 reqtags = 0;
 832 #if 1 /* Avoid to locally queue commands for no good reasons */
 833         if (reqtags > SYM_CONF_MAX_TAG)
 834                 reqtags = SYM_CONF_MAX_TAG;
 835         depth_to_use = (reqtags ? reqtags : 2);
 836 #else
 837         depth_to_use = (reqtags ? SYM_CONF_MAX_TAG : 2);
 838 #endif
 839         scsi_adjust_queue_depth(sdev,
 840                                 (sdev->tagged_supported ?
 841                                  MSG_SIMPLE_TAG : 0),
 842                                 depth_to_use);
 843         lp->s.scdev_depth = depth_to_use;
 844         sym_tune_dev_queuing(tp, sdev->lun, reqtags);
 845
 846         if (!spi_initial_dv(sdev->sdev_target))
 847                 spi_dv_device(sdev);
 848
 849         return 0;
 850 }
 851
 852 static void sym53c8xx_slave_destroy(struct scsi_device *sdev)
 853 {
 854         struct sym_hcb *np = sym_get_hcb(sdev->host);
 855         struct sym_lcb *lp = sym_lp(&np->target[sdev->id], sdev->lun);
 856
 857         if (lp->itlq_tbl)
 858                 sym_mfree_dma(lp->itlq_tbl, SYM_CONF_MAX_TASK * 4, "ITLQ_TBL");
 859         kfree(lp->cb_tags);
 860         sym_mfree_dma(lp, sizeof(*lp), "LCB");
 861 }
 862
 863 /*
 864  *  Linux entry point for info() function
 865  */
 866 static const char *sym53c8xx_info (struct Scsi_Host *host)
 867 {
 868         return SYM_DRIVER_NAME;
 869 }
 870
 871
 872 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
 873 /*
 874  *  Proc file system stuff
 875  *
 876  *  A read operation returns adapter information.
 877  *  A write operation is a control command.
 878  *  The string is parsed in the driver code and the command is passed
 879  *  to the sym_usercmd() function.
 880  */
 881
 882 #ifdef SYM_LINUX_USER_COMMAND_SUPPORT
 883
 884 struct  sym_usrcmd {
 885         u_long  target;
 886         u_long  lun;
 887         u_long  data;
 888         u_long  cmd;
 889 };
 890
 891 #define UC_SETSYNC      10
 892 #define UC_SETTAGS      11
 893 #define UC_SETDEBUG     12
 894 #define UC_SETWIDE      14
 895 #define UC_SETFLAG      15
 896 #define UC_SETVERBOSE   17
 897 #define UC_RESETDEV     18
 898 #define UC_CLEARDEV     19
 899
 900 static void sym_exec_user_command (struct sym_hcb *np, struct sym_usrcmd *uc)
 901 {
 902         struct sym_tcb *tp;
 903         int t, l;
 904
 905         switch (uc->cmd) {
 906         case 0: return;
 907
 908 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
 909         case UC_SETDEBUG:
 910                 sym_debug_flags = uc->data;
 911                 break;
 912 #endif
 913         case UC_SETVERBOSE:
 914                 np->verbose = uc->data;
 915                 break;
 916         default:
 917                 /*
 918                  * We assume that other commands apply to targets.
 919                  * This should always be the case and avoid the below
 920                  * 4 lines to be repeated 6 times.
 921                  */
 922                 for (t = 0; t < SYM_CONF_MAX_TARGET; t++) {
 923                         if (!((uc->target >> t) & 1))
 924                                 continue;
 925                         tp = &np->target[t];
 926
 927                         switch (uc->cmd) {
 928
 929                         case UC_SETSYNC:
 930                                 if (!uc->data || uc->data >= 255) {
 931                                         tp->tgoal.iu = tp->tgoal.dt =
 932                                                 tp->tgoal.qas = 0;
 933                                         tp->tgoal.offset = 0;
 934                                 } else if (uc->data <= 9 && np->minsync_dt) {
 935                                         if (uc->data < np->minsync_dt)
 936                                                 uc->data = np->minsync_dt;
 937                                         tp->tgoal.iu = tp->tgoal.dt =
 938                                                 tp->tgoal.qas = 1;
 939                                         tp->tgoal.width = 1;
 940                                         tp->tgoal.period = uc->data;
 941                                         tp->tgoal.offset = np->maxoffs_dt;
 942                                 } else {
 943                                         if (uc->data < np->minsync)
 944                                                 uc->data = np->minsync;
 945                                         tp->tgoal.iu = tp->tgoal.dt =
 946                                                 tp->tgoal.qas = 0;
 947                                         tp->tgoal.period = uc->data;
 948                                         tp->tgoal.offset = np->maxoffs;
 949                                 }
 950                                 tp->tgoal.check_nego = 1;
 951                                 break;
 952                         case UC_SETWIDE:
 953                                 tp->tgoal.width = uc->data ? 1 : 0;
 954                                 tp->tgoal.check_nego = 1;
 955                                 break;
 956                         case UC_SETTAGS:
 957                                 for (l = 0; l < SYM_CONF_MAX_LUN; l++)
 958                                         sym_tune_dev_queuing(tp, l, uc->data);
 959                                 break;
 960                         case UC_RESETDEV:
 961                                 tp->to_reset = 1;
 962                                 np->istat_sem = SEM;
 963                                 OUTB(np, nc_istat, SIGP|SEM);
 964                                 break;
 965                         case UC_CLEARDEV:
 966                                 for (l = 0; l < SYM_CONF_MAX_LUN; l++) {
 967                                         struct sym_lcb *lp = sym_lp(tp, l);
 968                                         if (lp) lp->to_clear = 1;
 969                                 }
 970                                 np->istat_sem = SEM;
 971                                 OUTB(np, nc_istat, SIGP|SEM);
 972                                 break;
 973                         case UC_SETFLAG:
 974                                 tp->usrflags = uc->data;
 975                                 break;
 976                         }
 977                 }
 978                 break;
 979         }
 980 }
 981
 982 static int skip_spaces(char *ptr, int len)
 983 {
 984         int cnt, c;
 985
 986         for (cnt = len; cnt > 0 && (c = *ptr++) && isspace(c); cnt--);
 987
 988         return (len - cnt);
 989 }
 990
 991 static int get_int_arg(char *ptr, int len, u_long *pv)
 992 {
 993         char *end;
 994
 995         *pv = simple_strtoul(ptr, &end, 10);
 996         return (end - ptr);
 997 }
 998
 999 static int is_keyword(char *ptr, int len, char *verb)
1000 {
1001         int verb_len = strlen(verb);
1002
1003         if (len >= verb_len && !memcmp(verb, ptr, verb_len))
1004                 return verb_len;
1005         else
1006                 return 0;
1007 }
1008
1009 #define SKIP_SPACES(ptr, len)                                           \
1010         if ((arg_len = skip_spaces(ptr, len)) < 1)                      \
1011                 return -EINVAL;                                         \
1012         ptr += arg_len; len -= arg_len;
1013
1014 #define GET_INT_ARG(ptr, len, v)                                        \
1015         if (!(arg_len = get_int_arg(ptr, len, &(v))))                   \
1016                 return -EINVAL;                                         \
1017         ptr += arg_len; len -= arg_len;
1018
1019
1020 /*
1021  * Parse a control command
1022  */
1023
1024 static int sym_user_command(struct sym_hcb *np, char *buffer, int length)
1025 {
1026         char *ptr       = buffer;
1027         int len         = length;
1028         struct sym_usrcmd cmd, *uc = &cmd;
1029         int             arg_len;
1030         u_long          target;
1031
1032         memset(uc, 0, sizeof(*uc));
1033
1034         if (len > 0 && ptr[len-1] == '\n')
1035                 --len;
1036
1037         if      ((arg_len = is_keyword(ptr, len, "setsync")) != 0)
1038                 uc->cmd = UC_SETSYNC;
1039         else if ((arg_len = is_keyword(ptr, len, "settags")) != 0)
1040                 uc->cmd = UC_SETTAGS;
1041         else if ((arg_len = is_keyword(ptr, len, "setverbose")) != 0)
1042                 uc->cmd = UC_SETVERBOSE;
1043         else if ((arg_len = is_keyword(ptr, len, "setwide")) != 0)
1044                 uc->cmd = UC_SETWIDE;
1045 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1046         else if ((arg_len = is_keyword(ptr, len, "setdebug")) != 0)
1047                 uc->cmd = UC_SETDEBUG;
1048 #endif
1049         else if ((arg_len = is_keyword(ptr, len, "setflag")) != 0)
1050                 uc->cmd = UC_SETFLAG;
1051         else if ((arg_len = is_keyword(ptr, len, "resetdev")) != 0)
1052                 uc->cmd = UC_RESETDEV;
1053         else if ((arg_len = is_keyword(ptr, len, "cleardev")) != 0)
1054                 uc->cmd = UC_CLEARDEV;
1055         else
1056                 arg_len = 0;
1057
1058 #ifdef DEBUG_PROC_INFO
1059 printk("sym_user_command: arg_len=%d, cmd=%ld\n", arg_len, uc->cmd);
1060 #endif
1061
1062         if (!arg_len)
1063                 return -EINVAL;
1064         ptr += arg_len; len -= arg_len;
1065
1066         switch(uc->cmd) {
1067         case UC_SETSYNC:
1068         case UC_SETTAGS:
1069         case UC_SETWIDE:
1070         case UC_SETFLAG:
1071         case UC_RESETDEV:
1072         case UC_CLEARDEV:
1073                 SKIP_SPACES(ptr, len);
1074                 if ((arg_len = is_keyword(ptr, len, "all")) != 0) {
1075                         ptr += arg_len; len -= arg_len;
1076                         uc->target = ~0;
1077                 } else {
1078                         GET_INT_ARG(ptr, len, target);
1079                         uc->target = (1<<target);
1080 #ifdef DEBUG_PROC_INFO
1081 printk("sym_user_command: target=%ld\n", target);
1082 #endif
1083                 }
1084                 break;
1085         }
1086
1087         switch(uc->cmd) {
1088         case UC_SETVERBOSE:
1089         case UC_SETSYNC:
1090         case UC_SETTAGS:
1091         case UC_SETWIDE:
1092                 SKIP_SPACES(ptr, len);
1093                 GET_INT_ARG(ptr, len, uc->data);
1094 #ifdef DEBUG_PROC_INFO
1095 printk("sym_user_command: data=%ld\n", uc->data);
1096 #endif
1097                 break;
1098 #ifdef SYM_LINUX_DEBUG_CONTROL_SUPPORT
1099         case UC_SETDEBUG:
1100                 while (len > 0) {
1101                         SKIP_SPACES(ptr, len);
1102                         if      ((arg_len = is_keyword(ptr, len, "alloc")))
1103                                 uc->data |= DEBUG_ALLOC;
1104                         else if ((arg_len = is_keyword(ptr, len, "phase")))
1105                                 uc->data |= DEBUG_PHASE;
1106                         else if ((arg_len = is_keyword(ptr, len, "queue")))
1107                                 uc->data |= DEBUG_QUEUE;
1108                         else if ((arg_len = is_keyword(ptr, len, "result")))
1109                                 uc->data |= DEBUG_RESULT;
1110                         else if ((arg_len = is_keyword(ptr, len, "scatter")))
1111                                 uc->data |= DEBUG_SCATTER;
1112                         else if ((arg_len = is_keyword(ptr, len, "script")))
1113                                 uc->data |= DEBUG_SCRIPT;
1114                         else if ((arg_len = is_keyword(ptr, len, "tiny")))
1115                                 uc->data |= DEBUG_TINY;
1116                         else if ((arg_len = is_keyword(ptr, len, "timing")))
1117                                 uc->data |= DEBUG_TIMING;
1118                         else if ((arg_len = is_keyword(ptr, len, "nego")))
1119                                 uc->data |= DEBUG_NEGO;
1120                         else if ((arg_len = is_keyword(ptr, len, "tags")))
1121                                 uc->data |= DEBUG_TAGS;
1122                         else if ((arg_len = is_keyword(ptr, len, "pointer")))
1123                                 uc->data |= DEBUG_POINTER;
1124                         else
1125                                 return -EINVAL;
1126                         ptr += arg_len; len -= arg_len;
1127                 }
1128 #ifdef DEBUG_PROC_INFO
1129 printk("sym_user_command: data=%ld\n", uc->data);
1130 #endif
1131                 break;
1132 #endif /* SYM_LINUX_DEBUG_CONTROL_SUPPORT */
1133         case UC_SETFLAG:
1134                 while (len > 0) {
1135                         SKIP_SPACES(ptr, len);
1136                         if      ((arg_len = is_keyword(ptr, len, "no_disc")))
1137                                 uc->data &= ~SYM_DISC_ENABLED;
1138                         else
1139                                 return -EINVAL;
1140                         ptr += arg_len; len -= arg_len;
1141                 }
1142                 break;
1143         default:
1144                 break;
1145         }
1146
1147         if (len)
1148                 return -EINVAL;
1149         else {
1150                 unsigned long flags;
1151
1152                 spin_lock_irqsave(np->s.host->host_lock, flags);
1153                 sym_exec_user_command (np, uc);
1154                 spin_unlock_irqrestore(np->s.host->host_lock, flags);
1155         }
1156         return length;
1157 }
1158
1159 #endif  /* SYM_LINUX_USER_COMMAND_SUPPORT */
1160
1161
1162 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1163 /*
1164  *  Informations through the proc file system.
1165  */
1166 struct info_str {
1167         char *buffer;
1168         int length;
1169         int offset;
1170         int pos;
1171 };
1172
1173 static void copy_mem_info(struct info_str *info, char *data, int len)
1174 {
1175         if (info->pos + len > info->length)
1176                 len = info->length - info->pos;
1177
1178         if (info->pos + len < info->offset) {
1179                 info->pos += len;
1180                 return;
1181         }
1182         if (info->pos < info->offset) {
1183                 data += (info->offset - info->pos);
1184                 len  -= (info->offset - info->pos);
1185         }
1186
1187         if (len > 0) {
1188                 memcpy(info->buffer + info->pos, data, len);
1189                 info->pos += len;
1190         }
1191 }
1192
1193 static int copy_info(struct info_str *info, char *fmt, ...)
1194 {
1195         va_list args;
1196         char buf[81];
1197         int len;
1198
1199         va_start(args, fmt);
1200         len = vsprintf(buf, fmt, args);
1201         va_end(args);
1202
1203         copy_mem_info(info, buf, len);
1204         return len;
1205 }
1206
1207 /*
1208  *  Copy formatted information into the input buffer.
1209  */
1210 static int sym_host_info(struct sym_hcb *np, char *ptr, off_t offset, int len)
1211 {
1212         struct info_str info;
1213
1214         info.buffer     = ptr;
1215         info.length     = len;
1216         info.offset     = offset;
1217         info.pos        = 0;
1218
1219         copy_info(&info, "Chip " NAME53C "%s, device id 0x%x, "
1220                          "revision id 0x%x\n",
1221                          np->s.chip_name, np->device_id, np->revision_id);
1222         copy_info(&info, "At PCI address %s, IRQ " IRQ_FMT "\n",
1223                 pci_name(np->s.device), IRQ_PRM(np->s.device->irq));
1224         copy_info(&info, "Min. period factor %d, %s SCSI BUS%s\n",
1225                          (int) (np->minsync_dt ? np->minsync_dt : np->minsync),
1226                          np->maxwide ? "Wide" : "Narrow",
1227                          np->minsync_dt ? ", DT capable" : "");
1228
1229         copy_info(&info, "Max. started commands %d, "
1230                          "max. commands per LUN %d\n",
1231                          SYM_CONF_MAX_START, SYM_CONF_MAX_TAG);
1232
1233         return info.pos > info.offset? info.pos - info.offset : 0;
1234 }
1235 #endif /* SYM_LINUX_USER_INFO_SUPPORT */
1236
1237 /*
1238  *  Entry point of the scsi proc fs of the driver.
1239  *  - func = 0 means read  (returns adapter infos)
1240  *  - func = 1 means write (not yet merget from sym53c8xx)
1241  */
1242 static int sym53c8xx_proc_info(struct Scsi_Host *host, char *buffer,
1243                         char **start, off_t offset, int length, int func)
1244 {
1245         struct sym_hcb *np = sym_get_hcb(host);
1246         int retv;
1247
1248         if (func) {
1249 #ifdef  SYM_LINUX_USER_COMMAND_SUPPORT
1250                 retv = sym_user_command(np, buffer, length);
1251 #else
1252                 retv = -EINVAL;
1253 #endif
1254         } else {
1255                 if (start)
1256                         *start = buffer;
1257 #ifdef SYM_LINUX_USER_INFO_SUPPORT
1258                 retv = sym_host_info(np, buffer, offset, length);
1259 #else
1260                 retv = -EINVAL;
1261 #endif
1262         }
1263
1264         return retv;
1265 }
1266 #endif /* SYM_LINUX_PROC_INFO_SUPPORT */
1267
1268 /*
1269  *      Free controller resources.
1270  */
1271 static void sym_free_resources(struct sym_hcb *np, struct pci_dev *pdev)
1272 {
1273         /*
1274          *  Free O/S specific resources.
1275          */
1276         if (pdev->irq)
1277                 free_irq(pdev->irq, np);
1278         if (np->s.ioaddr)
1279                 pci_iounmap(pdev, np->s.ioaddr);
1280         if (np->s.ramaddr)
1281                 pci_iounmap(pdev, np->s.ramaddr);
1282         /*
1283          *  Free O/S independent resources.
1284          */
1285         sym_hcb_free(np);
1286
1287         sym_mfree_dma(np, sizeof(*np), "HCB");
1288 }
1289
1290 /*
1291  *  Ask/tell the system about DMA addressing.
1292  */
1293 static int sym_setup_bus_dma_mask(struct sym_hcb *np)
1294 {
1295 #if SYM_CONF_DMA_ADDRESSING_MODE > 0
1296 #if   SYM_CONF_DMA_ADDRESSING_MODE == 1
1297 #define DMA_DAC_MASK    DMA_40BIT_MASK
1298 #elif SYM_CONF_DMA_ADDRESSING_MODE == 2
1299 #define DMA_DAC_MASK    DMA_64BIT_MASK
1300 #endif
1301         if ((np->features & FE_DAC) &&
1302                         !pci_set_dma_mask(np->s.device, DMA_DAC_MASK)) {
1303                 np->use_dac = 1;
1304                 return 0;
1305         }
1306 #endif
1307
1308         if (!pci_set_dma_mask(np->s.device, DMA_32BIT_MASK))
1309                 return 0;
1310
1311         printf_warning("%s: No suitable DMA available\n", sym_name(np));
1312         return -1;
1313 }
1314
1315 /*
1316  *  Host attach and initialisations.
1317  *
1318  *  Allocate host data and ncb structure.
1319  *  Remap MMIO region.
1320  *  Do chip initialization.
1321  *  If all is OK, install interrupt handling and
1322  *  start the timer daemon.
1323  */
1324 static struct Scsi_Host * __devinit sym_attach(struct scsi_host_template *tpnt,
1325                 int unit, struct sym_device *dev)
1326 {
1327         struct host_data *host_data;
1328         struct sym_hcb *np = NULL;
1329         struct Scsi_Host *instance = NULL;
1330         struct pci_dev *pdev = dev->pdev;
1331         unsigned long flags;
1332         struct sym_fw *fw;
1333
1334         printk(KERN_INFO
1335                 "sym%d: <%s> rev 0x%x at pci %s irq " IRQ_FMT "\n",
1336                 unit, dev->chip.name, dev->chip.revision_id,
1337                 pci_name(pdev), IRQ_PRM(pdev->irq));
1338
1339         /*
1340          *  Get the firmware for this chip.
1341          */
1342         fw = sym_find_firmware(&dev->chip);
1343         if (!fw)
1344                 goto attach_failed;
1345
1346         /*
1347          *      Allocate host_data structure
1348          */
1349         instance = scsi_host_alloc(tpnt, sizeof(*host_data));
1350         if (!instance)
1351                 goto attach_failed;
1352         host_data = (struct host_data *) instance->hostdata;
1353
1354         /*
1355          *  Allocate immediately the host control block,
1356          *  since we are only expecting to succeed. :)
1357          *  We keep track in the HCB of all the resources that
1358          *  are to be released on error.
1359          */
1360         np = __sym_calloc_dma(&pdev->dev, sizeof(*np), "HCB");
1361         if (!np)
1362                 goto attach_failed;
1363         np->s.device = pdev;
1364         np->bus_dmat = &pdev->dev; /* Result in 1 DMA pool per HBA */
1365         host_data->ncb = np;
1366         np->s.host = instance;
1367
1368         pci_set_drvdata(pdev, np);
1369
1370         /*
1371          *  Copy some useful infos to the HCB.
1372          */
1373         np->hcb_ba      = vtobus(np);
1374         np->verbose     = sym_driver_setup.verbose;
1375         np->s.device    = pdev;
1376         np->s.unit      = unit;
1377         np->device_id   = dev->chip.device_id;
1378         np->revision_id = dev->chip.revision_id;
1379         np->features    = dev->chip.features;
1380         np->clock_divn  = dev->chip.nr_divisor;
1381         np->maxoffs     = dev->chip.offset_max;
1382         np->maxburst    = dev->chip.burst_max;
1383         np->myaddr      = dev->host_id;
1384
1385         /*
1386          *  Edit its name.
1387          */
1388         strlcpy(np->s.chip_name, dev->chip.name, sizeof(np->s.chip_name));
1389         sprintf(np->s.inst_name, "sym%d", np->s.unit);
1390
1391         if (sym_setup_bus_dma_mask(np))
1392                 goto attach_failed;
1393
1394         /*
1395          *  Try to map the controller chip to
1396          *  virtual and physical memory.
1397          */
1398         np->mmio_ba = (u32)dev->mmio_base;
1399         np->s.ioaddr    = dev->s.ioaddr;
1400         np->s.ramaddr   = dev->s.ramaddr;
1401         np->s.io_ws = (np->features & FE_IO256) ? 256 : 128;
1402
1403         /*
1404          *  Map on-chip RAM if present and supported.
1405          */
1406         if (!(np->features & FE_RAM))
1407                 dev->ram_base = 0;
1408         if (dev->ram_base) {
1409                 np->ram_ba = (u32)dev->ram_base;
1410                 np->ram_ws = (np->features & FE_RAM8K) ? 8192 : 4096;
1411         }
1412
1413         if (sym_hcb_attach(instance, fw, dev->nvram))
1414                 goto attach_failed;
1415
1416         /*
1417          *  Install the interrupt handler.
1418          *  If we synchonize the C code with SCRIPTS on interrupt,
1419          *  we do not want to share the INTR line at all.
1420          */
1421         if (request_irq(pdev->irq, sym53c8xx_intr, IRQF_SHARED, NAME53C8XX, np)) {
1422                 printf_err("%s: request irq %d failure\n",
1423                         sym_name(np), pdev->irq);
1424                 goto attach_failed;
1425         }
1426
1427         /*
1428          *  After SCSI devices have been opened, we cannot
1429          *  reset the bus safely, so we do it here.
1430          */
1431         spin_lock_irqsave(instance->host_lock, flags);
1432         if (sym_reset_scsi_bus(np, 0))
1433                 goto reset_failed;
1434
1435         /*
1436          *  Start the SCRIPTS.
1437          */
1438         sym_start_up (np, 1);
1439
1440         /*
1441          *  Start the timer daemon
1442          */
1443         init_timer(&np->s.timer);
1444         np->s.timer.data     = (unsigned long) np;
1445         np->s.timer.function = sym53c8xx_timer;
1446         np->s.lasttime=0;
1447         sym_timer (np);
1448
1449         /*
1450          *  Fill Linux host instance structure
1451          *  and return success.
1452          */
1453         instance->max_channel   = 0;
1454         instance->this_id       = np->myaddr;
1455         instance->max_id        = np->maxwide ? 16 : 8;
1456         instance->max_lun       = SYM_CONF_MAX_LUN;
1457         instance->unique_id     = pci_resource_start(pdev, 0);
1458         instance->cmd_per_lun   = SYM_CONF_MAX_TAG;
1459         instance->can_queue     = (SYM_CONF_MAX_START-2);
1460         instance->sg_tablesize  = SYM_CONF_MAX_SG;
1461         instance->max_cmd_len   = 16;
1462         BUG_ON(sym2_transport_template == NULL);
1463         instance->transportt    = sym2_transport_template;
1464
1465         /* 53c896 rev 1 errata: DMA may not cross 16MB boundary */
1466         if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && np->revision_id < 2)
1467                 instance->dma_boundary = 0xFFFFFF;
1468
1469         spin_unlock_irqrestore(instance->host_lock, flags);
1470
1471         return instance;
1472
1473  reset_failed:
1474         printf_err("%s: FATAL ERROR: CHECK SCSI BUS - CABLES, "
1475                    "TERMINATION, DEVICE POWER etc.!\n", sym_name(np));
1476         spin_unlock_irqrestore(instance->host_lock, flags);
1477  attach_failed:
1478         if (!instance)
1479                 return NULL;
1480         printf_info("%s: giving up ...\n", sym_name(np));
1481         if (np)
1482                 sym_free_resources(np, pdev);
1483         scsi_host_put(instance);
1484
1485         return NULL;
1486  }
1487
1488
1489 /*
1490  *    Detect and try to read SYMBIOS and TEKRAM NVRAM.
1491  */
1492 #if SYM_CONF_NVRAM_SUPPORT
1493 static void __devinit sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1494 {
1495         devp->nvram = nvp;
1496         devp->device_id = devp->chip.device_id;
1497         nvp->type = 0;
1498
1499         sym_read_nvram(devp, nvp);
1500 }
1501 #else
1502 static inline void sym_get_nvram(struct sym_device *devp, struct sym_nvram *nvp)
1503 {
1504 }
1505 #endif  /* SYM_CONF_NVRAM_SUPPORT */
1506
1507 static int __devinit sym_check_supported(struct sym_device *device)
1508 {
1509         struct sym_chip *chip;
1510         struct pci_dev *pdev = device->pdev;
1511         u_char revision;
1512         unsigned long io_port = pci_resource_start(pdev, 0);
1513         int i;
1514
1515         /*
1516          *  If user excluded this chip, do not initialize it.
1517          *  I hate this code so much.  Must kill it.
1518          */
1519         if (io_port) {
1520                 for (i = 0 ; i < 8 ; i++) {
1521                         if (sym_driver_setup.excludes[i] == io_port)
1522                                 return -ENODEV;
1523                 }
1524         }
1525
1526         /*
1527          * Check if the chip is supported.  Then copy the chip description
1528          * to our device structure so we can make it match the actual device
1529          * and options.
1530          */
1531         pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
1532         chip = sym_lookup_chip_table(pdev->device, revision);
1533         if (!chip) {
1534                 dev_info(&pdev->dev, "device not supported\n");
1535                 return -ENODEV;
1536         }
1537         memcpy(&device->chip, chip, sizeof(device->chip));
1538         device->chip.revision_id = revision;
1539
1540         return 0;
1541 }
1542
1543 /*
1544  * Ignore Symbios chips controlled by various RAID controllers.
1545  * These controllers set value 0x52414944 at RAM end - 16.
1546  */
1547 static int __devinit sym_check_raid(struct sym_device *device)
1548 {
1549         unsigned int ram_size, ram_val;
1550
1551         if (!device->s.ramaddr)
1552                 return 0;
1553
1554         if (device->chip.features & FE_RAM8K)
1555                 ram_size = 8192;
1556         else
1557                 ram_size = 4096;
1558
1559         ram_val = readl(device->s.ramaddr + ram_size - 16);
1560         if (ram_val != 0x52414944)
1561                 return 0;
1562
1563         dev_info(&device->pdev->dev,
1564                         "not initializing, driven by RAID controller.\n");
1565         return -ENODEV;
1566 }
1567
1568 static int __devinit sym_set_workarounds(struct sym_device *device)
1569 {
1570         struct sym_chip *chip = &device->chip;
1571         struct pci_dev *pdev = device->pdev;
1572         u_short status_reg;
1573
1574         /*
1575          *  (ITEM 12 of a DEL about the 896 I haven't yet).
1576          *  We must ensure the chip will use WRITE AND INVALIDATE.
1577          *  The revision number limit is for now arbitrary.
1578          */
1579         if (pdev->device == PCI_DEVICE_ID_NCR_53C896 && chip->revision_id < 0x4) {
1580                 chip->features  |= (FE_WRIE | FE_CLSE);
1581         }
1582
1583         /* If the chip can do Memory Write Invalidate, enable it */
1584         if (chip->features & FE_WRIE) {
1585                 if (pci_set_mwi(pdev))
1586                         return -ENODEV;
1587         }
1588
1589         /*
1590          *  Work around for errant bit in 895A. The 66Mhz
1591          *  capable bit is set erroneously. Clear this bit.
1592          *  (Item 1 DEL 533)
1593          *
1594          *  Make sure Config space and Features agree.
1595          *
1596          *  Recall: writes are not normal to status register -
1597          *  write a 1 to clear and a 0 to leave unchanged.
1598          *  Can only reset bits.
1599          */
1600         pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1601         if (chip->features & FE_66MHZ) {
1602                 if (!(status_reg & PCI_STATUS_66MHZ))
1603                         chip->features &= ~FE_66MHZ;
1604         } else {
1605                 if (status_reg & PCI_STATUS_66MHZ) {
1606                         status_reg = PCI_STATUS_66MHZ;
1607                         pci_write_config_word(pdev, PCI_STATUS, status_reg);
1608                         pci_read_config_word(pdev, PCI_STATUS, &status_reg);
1609                 }
1610         }
1611
1612         return 0;
1613 }
1614
1615 /*
1616  *  Read and check the PCI configuration for any detected NCR
1617  *  boards and save data for attaching after all boards have
1618  *  been detected.
1619  */
1620 static void __devinit
1621 sym_init_device(struct pci_dev *pdev, struct sym_device *device)
1622 {
1623         int i = 2;
1624         struct pci_bus_region bus_addr;
1625
1626         device->host_id = SYM_SETUP_HOST_ID;
1627         device->pdev = pdev;
1628
1629         pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[1]);
1630         device->mmio_base = bus_addr.start;
1631
1632         /*
1633          * If the BAR is 64-bit, resource 2 will be occupied by the
1634          * upper 32 bits
1635          */
1636         if (!pdev->resource[i].flags)
1637                 i++;
1638         pcibios_resource_to_bus(pdev, &bus_addr, &pdev->resource[i]);
1639         device->ram_base = bus_addr.start;
1640
1641 #ifdef CONFIG_SCSI_SYM53C8XX_MMIO
1642         if (device->mmio_base)
1643                 device->s.ioaddr = pci_iomap(pdev, 1,
1644                                                 pci_resource_len(pdev, 1));
1645 #endif
1646         if (!device->s.ioaddr)
1647                 device->s.ioaddr = pci_iomap(pdev, 0,
1648                                                 pci_resource_len(pdev, 0));
1649         if (device->ram_base)
1650                 device->s.ramaddr = pci_iomap(pdev, i,
1651                                                 pci_resource_len(pdev, i));
1652 }
1653
1654 /*
1655  * The NCR PQS and PDS cards are constructed as a DEC bridge
1656  * behind which sits a proprietary NCR memory controller and
1657  * either four or two 53c875s as separate devices.  We can tell
1658  * if an 875 is part of a PQS/PDS or not since if it is, it will
1659  * be on the same bus as the memory controller.  In its usual
1660  * mode of operation, the 875s are slaved to the memory
1661  * controller for all transfers.  To operate with the Linux
1662  * driver, the memory controller is disabled and the 875s
1663  * freed to function independently.  The only wrinkle is that
1664  * the preset SCSI ID (which may be zero) must be read in from
1665  * a special configuration space register of the 875.
1666  */
1667 static void sym_config_pqs(struct pci_dev *pdev, struct sym_device *sym_dev)
1668 {
1669         int slot;
1670         u8 tmp;
1671
1672         for (slot = 0; slot < 256; slot++) {
1673                 struct pci_dev *memc = pci_get_slot(pdev->bus, slot);
1674
1675                 if (!memc || memc->vendor != 0x101a || memc->device == 0x0009) {
1676                         pci_dev_put(memc);
1677                         continue;
1678                 }
1679
1680                 /* bit 1: allow individual 875 configuration */
1681                 pci_read_config_byte(memc, 0x44, &tmp);
1682                 if ((tmp & 0x2) == 0) {
1683                         tmp |= 0x2;
1684                         pci_write_config_byte(memc, 0x44, tmp);
1685                 }
1686
1687                 /* bit 2: drive individual 875 interrupts to the bus */
1688                 pci_read_config_byte(memc, 0x45, &tmp);
1689                 if ((tmp & 0x4) == 0) {
1690                         tmp |= 0x4;
1691                         pci_write_config_byte(memc, 0x45, tmp);
1692                 }
1693
1694                 pci_dev_put(memc);
1695                 break;
1696         }
1697
1698         pci_read_config_byte(pdev, 0x84, &tmp);
1699         sym_dev->host_id = tmp;
1700 }
1701
1702 /*
1703  *  Called before unloading the module.
1704  *  Detach the host.
1705  *  We have to free resources and halt the NCR chip.
1706  */
1707 static int sym_detach(struct sym_hcb *np, struct pci_dev *pdev)
1708 {
1709         printk("%s: detaching ...\n", sym_name(np));
1710
1711         del_timer_sync(&np->s.timer);
1712
1713         /*
1714          * Reset NCR chip.
1715          * We should use sym_soft_reset(), but we don't want to do
1716          * so, since we may not be safe if interrupts occur.
1717          */
1718         printk("%s: resetting chip\n", sym_name(np));
1719         OUTB(np, nc_istat, SRST);
1720         INB(np, nc_mbox1);
1721         udelay(10);
1722         OUTB(np, nc_istat, 0);
1723
1724         sym_free_resources(np, pdev);
1725
1726         return 1;
1727 }
1728
1729 /*
1730  * Driver host template.
1731  */
1732 static struct scsi_host_template sym2_template = {
1733         .module                 = THIS_MODULE,
1734         .name                   = "sym53c8xx",
1735         .info                   = sym53c8xx_info,
1736         .queuecommand           = sym53c8xx_queue_command,
1737         .slave_alloc            = sym53c8xx_slave_alloc,
1738         .slave_configure        = sym53c8xx_slave_configure,
1739         .slave_destroy          = sym53c8xx_slave_destroy,
1740         .eh_abort_handler       = sym53c8xx_eh_abort_handler,
1741         .eh_device_reset_handler = sym53c8xx_eh_device_reset_handler,
1742         .eh_bus_reset_handler   = sym53c8xx_eh_bus_reset_handler,
1743         .eh_host_reset_handler  = sym53c8xx_eh_host_reset_handler,
1744         .this_id                = 7,
1745         .use_clustering         = ENABLE_CLUSTERING,
1746         .use_sg_chaining        = ENABLE_SG_CHAINING,
1747         .max_sectors            = 0xFFFF,
1748 #ifdef SYM_LINUX_PROC_INFO_SUPPORT
1749         .proc_info              = sym53c8xx_proc_info,
1750         .proc_name              = NAME53C8XX,
1751 #endif
1752 };
1753
1754 static int attach_count;
1755
1756 static int __devinit sym2_probe(struct pci_dev *pdev,
1757                                 const struct pci_device_id *ent)
1758 {
1759         struct sym_device sym_dev;
1760         struct sym_nvram nvram;
1761         struct Scsi_Host *instance;
1762
1763         memset(&sym_dev, 0, sizeof(sym_dev));
1764         memset(&nvram, 0, sizeof(nvram));
1765
1766         if (pci_enable_device(pdev))
1767                 goto leave;
1768
1769         pci_set_master(pdev);
1770
1771         if (pci_request_regions(pdev, NAME53C8XX))
1772                 goto disable;
1773
1774         sym_init_device(pdev, &sym_dev);
1775         if (sym_check_supported(&sym_dev))
1776                 goto free;
1777
1778         if (sym_check_raid(&sym_dev))
1779                 goto leave;     /* Don't disable the device */
1780
1781         if (sym_set_workarounds(&sym_dev))
1782                 goto free;
1783
1784         sym_config_pqs(pdev, &sym_dev);
1785
1786         sym_get_nvram(&sym_dev, &nvram);
1787
1788         instance = sym_attach(&sym2_template, attach_count, &sym_dev);
1789         if (!instance)
1790                 goto free;
1791
1792         if (scsi_add_host(instance, &pdev->dev))
1793                 goto detach;
1794         scsi_scan_host(instance);
1795
1796         attach_count++;
1797
1798         return 0;
1799
1800  detach:
1801         sym_detach(pci_get_drvdata(pdev), pdev);
1802  free:
1803         pci_release_regions(pdev);
1804  disable:
1805         pci_disable_device(pdev);
1806  leave:
1807         return -ENODEV;
1808 }
1809
1810 static void __devexit sym2_remove(struct pci_dev *pdev)
1811 {
1812         struct sym_hcb *np = pci_get_drvdata(pdev);
1813         struct Scsi_Host *host = np->s.host;
1814
1815         scsi_remove_host(host);
1816         scsi_host_put(host);
1817
1818         sym_detach(np, pdev);
1819
1820         pci_release_regions(pdev);
1821         pci_disable_device(pdev);
1822
1823         attach_count--;
1824 }
1825
1826 static void sym2_get_signalling(struct Scsi_Host *shost)
1827 {
1828         struct sym_hcb *np = sym_get_hcb(shost);
1829         enum spi_signal_type type;
1830
1831         switch (np->scsi_mode) {
1832         case SMODE_SE:
1833                 type = SPI_SIGNAL_SE;
1834                 break;
1835         case SMODE_LVD:
1836                 type = SPI_SIGNAL_LVD;
1837                 break;
1838         case SMODE_HVD:
1839                 type = SPI_SIGNAL_HVD;
1840                 break;
1841         default:
1842                 type = SPI_SIGNAL_UNKNOWN;
1843                 break;
1844         }
1845         spi_signalling(shost) = type;
1846 }
1847
1848 static void sym2_set_offset(struct scsi_target *starget, int offset)
1849 {
1850         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1851         struct sym_hcb *np = sym_get_hcb(shost);
1852         struct sym_tcb *tp = &np->target[starget->id];
1853
1854         tp->tgoal.offset = offset;
1855         tp->tgoal.check_nego = 1;
1856 }
1857
1858 static void sym2_set_period(struct scsi_target *starget, int period)
1859 {
1860         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1861         struct sym_hcb *np = sym_get_hcb(shost);
1862         struct sym_tcb *tp = &np->target[starget->id];
1863
1864         /* have to have DT for these transfers, but DT will also
1865          * set width, so check that this is allowed */
1866         if (period <= np->minsync && spi_width(starget))
1867                 tp->tgoal.dt = 1;
1868
1869         tp->tgoal.period = period;
1870         tp->tgoal.check_nego = 1;
1871 }
1872
1873 static void sym2_set_width(struct scsi_target *starget, int width)
1874 {
1875         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1876         struct sym_hcb *np = sym_get_hcb(shost);
1877         struct sym_tcb *tp = &np->target[starget->id];
1878
1879         /* It is illegal to have DT set on narrow transfers.  If DT is
1880          * clear, we must also clear IU and QAS.  */
1881         if (width == 0)
1882                 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
1883
1884         tp->tgoal.width = width;
1885         tp->tgoal.check_nego = 1;
1886 }
1887
1888 static void sym2_set_dt(struct scsi_target *starget, int dt)
1889 {
1890         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1891         struct sym_hcb *np = sym_get_hcb(shost);
1892         struct sym_tcb *tp = &np->target[starget->id];
1893
1894         /* We must clear QAS and IU if DT is clear */
1895         if (dt)
1896                 tp->tgoal.dt = 1;
1897         else
1898                 tp->tgoal.iu = tp->tgoal.dt = tp->tgoal.qas = 0;
1899         tp->tgoal.check_nego = 1;
1900 }
1901
1902 #if 0
1903 static void sym2_set_iu(struct scsi_target *starget, int iu)
1904 {
1905         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1906         struct sym_hcb *np = sym_get_hcb(shost);
1907         struct sym_tcb *tp = &np->target[starget->id];
1908
1909         if (iu)
1910                 tp->tgoal.iu = tp->tgoal.dt = 1;
1911         else
1912                 tp->tgoal.iu = 0;
1913         tp->tgoal.check_nego = 1;
1914 }
1915
1916 static void sym2_set_qas(struct scsi_target *starget, int qas)
1917 {
1918         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1919         struct sym_hcb *np = sym_get_hcb(shost);
1920         struct sym_tcb *tp = &np->target[starget->id];
1921
1922         if (qas)
1923                 tp->tgoal.dt = tp->tgoal.qas = 1;
1924         else
1925                 tp->tgoal.qas = 0;
1926         tp->tgoal.check_nego = 1;
1927 }
1928 #endif
1929
1930 static struct spi_function_template sym2_transport_functions = {
1931         .set_offset     = sym2_set_offset,
1932         .show_offset    = 1,
1933         .set_period     = sym2_set_period,
1934         .show_period    = 1,
1935         .set_width      = sym2_set_width,
1936         .show_width     = 1,
1937         .set_dt         = sym2_set_dt,
1938         .show_dt        = 1,
1939 #if 0
1940         .set_iu         = sym2_set_iu,
1941         .show_iu        = 1,
1942         .set_qas        = sym2_set_qas,
1943         .show_qas       = 1,
1944 #endif
1945         .get_signalling = sym2_get_signalling,
1946 };
1947
1948 static struct pci_device_id sym2_id_table[] __devinitdata = {
1949         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C810,
1950           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1951         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C820,
1952           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
1953         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C825,
1954           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1955         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C815,
1956           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1957         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C810AP,
1958           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, /* new */
1959         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C860,
1960           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1961         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1510,
1962           PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_SCSI<<8,  0xffff00, 0UL },
1963         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C896,
1964           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1965         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C895,
1966           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1967         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C885,
1968           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1969         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875,
1970           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1971         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C1510,
1972           PCI_ANY_ID, PCI_ANY_ID,  PCI_CLASS_STORAGE_SCSI<<8,  0xffff00, 0UL }, /* new */
1973         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C895A,
1974           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1975         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C875A,
1976           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1977         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_33,
1978           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1979         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1010_66,
1980           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1981         { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_NCR_53C875J,
1982           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1983         { 0, }
1984 };
1985
1986 MODULE_DEVICE_TABLE(pci, sym2_id_table);
1987
1988 static struct pci_driver sym2_driver = {
1989         .name           = NAME53C8XX,
1990         .id_table       = sym2_id_table,
1991         .probe          = sym2_probe,
1992         .remove         = __devexit_p(sym2_remove),
1993 };
1994
1995 static int __init sym2_init(void)
1996 {
1997         int error;
1998
1999         sym2_setup_params();
2000         sym2_transport_template = spi_attach_transport(&sym2_transport_functions);
2001         if (!sym2_transport_template)
2002                 return -ENODEV;
2003
2004         error = pci_register_driver(&sym2_driver);
2005         if (error)
2006                 spi_release_transport(sym2_transport_template);
2007         return error;
2008 }
2009
2010 static void __exit sym2_exit(void)
2011 {
2012         pci_unregister_driver(&sym2_driver);
2013         spi_release_transport(sym2_transport_template);
2014 }
2015
2016 module_init(sym2_init);
2017 module_exit(sym2_exit);