sys/dev/disk/mpt/mpt_pci.c

   1 /* $FreeBSD: src/sys/dev/mpt/mpt_pci.c,v 1.3.2.3 2002/09/24 21:37:25 mjacob Exp $ */
   2 /* $DragonFly: src/sys/dev/disk/mpt/mpt_pci.c,v 1.12 2008/06/05 18:06:31 swildner Exp $ */
   3 /*
   4  * PCI specific probe and attach routines for LSI '909 FC  adapters.
   5  * FreeBSD Version.
   6  *
   7  * Copyright (c)  2000, 2001 by Greg Ansley
   8  * Partially derived from Matt Jacob's ISP driver.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice immediately at the beginning of the file, without modification,
  15  *    this list of conditions, and the following disclaimer.
  16  * 2. The name of the author may not be used to endorse or promote products
  17  *    derived from this software without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  23  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31 /*
  32  * Additional Copyright (c) 2002 by Matthew Jacob under same license.
  33  */
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/module.h>
  39 #include <sys/bus.h>
  40 #include <sys/rman.h>
  41 #include <sys/malloc.h>
  42
  43 #include <bus/pci/pcidevs.h>
  44 #include <bus/pci/pcireg.h>
  45 #include <bus/pci/pcivar.h>
  46
  47 #include "mpt_freebsd.h"
  48
  49 #ifndef PCIM_CMD_SERRESPEN
  50 #define PCIM_CMD_SERRESPEN      0x0100
  51 #endif
  52
  53
  54
  55 #define MEM_MAP_REG     0x14
  56 #define MEM_MAP_SRAM    0x1C
  57
  58 static int mpt_probe(device_t);
  59 static int mpt_attach(device_t);
  60 static void mpt_free_bus_resources(mpt_softc_t *mpt);
  61 static int mpt_detach(device_t);
  62 static int mpt_shutdown(device_t);
  63 static int mpt_dma_mem_alloc(mpt_softc_t *mpt);
  64 static void mpt_dma_mem_free(mpt_softc_t *mpt);
  65 static void mpt_read_config_regs(mpt_softc_t *mpt);
  66 static void mpt_pci_intr(void *);
  67
  68 static device_method_t mpt_methods[] = {
  69         /* Device interface */
  70         DEVMETHOD(device_probe,         mpt_probe),
  71         DEVMETHOD(device_attach,        mpt_attach),
  72         DEVMETHOD(device_detach,        mpt_detach),
  73         DEVMETHOD(device_shutdown,      mpt_shutdown),
  74         { 0, 0 }
  75 };
  76
  77 static driver_t mpt_driver = {
  78         "mpt", mpt_methods, sizeof (mpt_softc_t)
  79 };
  80 static devclass_t mpt_devclass;
  81 DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0);
  82 MODULE_VERSION(mpt, 1);
  83
  84 int
  85 mpt_intr(void *dummy)
  86 {
  87         int nrepl = 0;
  88         u_int32_t reply;
  89         mpt_softc_t *mpt = (mpt_softc_t *)dummy;
  90
  91         if ((mpt_read(mpt, MPT_OFFSET_INTR_STATUS) & MPT_INTR_REPLY_READY) == 0)
  92                 return (0);
  93         reply = mpt_pop_reply_queue(mpt);
  94         while (reply != MPT_REPLY_EMPTY) {
  95                 nrepl++;
  96                 if (mpt->verbose > 1) {
  97                         if ((reply & MPT_CONTEXT_REPLY) != 0)  {
  98                                 /* Address reply; IOC has something to say */
  99                                 mpt_print_reply(MPT_REPLY_PTOV(mpt, reply));
 100                         } else {
 101                                 /* Context reply ; all went well */
 102                                 device_printf(mpt->dev,
 103                                     "context %u reply OK\n", reply);
 104                         }
 105                 }
 106                 mpt_done(mpt, reply);
 107                 reply = mpt_pop_reply_queue(mpt);
 108         }
 109         return (nrepl != 0);
 110 }
 111
 112 static int
 113 mpt_probe(device_t dev)
 114 {
 115         char *desc;
 116
 117         if (pci_get_vendor(dev) != PCI_VENDOR_SYMBIOS)
 118                 return (ENXIO);
 119
 120         switch ((pci_get_device(dev) & ~1)) {
 121         case PCI_PRODUCT_SYMBIOS_FC909:
 122                 desc = "LSILogic FC909 FC Adapter";
 123                 break;
 124         case PCI_PRODUCT_SYMBIOS_FC909A:
 125                 desc = "LSILogic FC909A FC Adapter";
 126                 break;
 127         case PCI_PRODUCT_SYMBIOS_FC919:
 128                 desc = "LSILogic FC919 FC Adapter";
 129                 break;
 130         case PCI_PRODUCT_SYMBIOS_FC929:
 131                 desc = "LSILogic FC929 FC Adapter";
 132                 break;
 133         case PCI_PRODUCT_SYMBIOS_FC929X:
 134                 desc = "LSILogic FC929X FC Adapter";
 135                 break;
 136         case PCI_PRODUCT_SYMBIOS_1030:
 137                 desc = "LSILogic 1030 Ultra4 Adapter";
 138                 break;
 139         default:
 140                 return (ENXIO);
 141         }
 142
 143         device_set_desc(dev, desc);
 144         return (0);
 145 }
 146
 147 static void
 148 mpt_set_options(mpt_softc_t *mpt)
 149 {
 150         int bitmap;
 151
 152         bitmap = 0;
 153         if (kgetenv_int("mpt_disable", &bitmap)) {
 154                 if (bitmap & (1 << mpt->unit)) {
 155                         mpt->disabled = 1;
 156                 }
 157         }
 158
 159         bitmap = 0;
 160         if (kgetenv_int("mpt_debug", &bitmap)) {
 161                 if (bitmap & (1 << mpt->unit)) {
 162                         mpt->verbose = 2;
 163                 }
 164         }
 165
 166 }
 167
 168 static void
 169 mpt_link_peer(mpt_softc_t *mpt)
 170 {
 171         mpt_softc_t *mpt2;
 172
 173         if (mpt->unit == 0) {
 174                 return;
 175         }
 176
 177         /*
 178          * XXX: depends on probe order
 179          */
 180         mpt2 = (mpt_softc_t *) devclass_get_softc(mpt_devclass, mpt->unit-1);
 181
 182         if (mpt2 == NULL) {
 183                 return;
 184         }
 185         if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) {
 186                 return;
 187         }
 188         if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) {
 189                 return;
 190         }
 191         mpt->mpt2 = mpt2;
 192         mpt2->mpt2 = mpt;
 193         if (mpt->verbose) {
 194                 device_printf(mpt->dev, "linking with peer (mpt%d)\n",
 195                     device_get_unit(mpt2->dev));
 196         }
 197 }
 198
 199
 200 static int
 201 mpt_attach(device_t dev)
 202 {
 203         int iqd;
 204         u_int32_t data, cmd;
 205         mpt_softc_t *mpt;
 206
 207         /* Allocate the softc structure */
 208         mpt  = (mpt_softc_t*) device_get_softc(dev);
 209         if (mpt == NULL) {
 210                 device_printf(dev, "cannot allocate softc\n");
 211                 return (ENOMEM);
 212         }
 213         bzero(mpt, sizeof (mpt_softc_t));
 214         switch ((pci_get_device(dev) & ~1)) {
 215         case PCI_PRODUCT_SYMBIOS_FC909:
 216         case PCI_PRODUCT_SYMBIOS_FC909A:
 217         case PCI_PRODUCT_SYMBIOS_FC919:
 218         case PCI_PRODUCT_SYMBIOS_FC929:
 219         case PCI_PRODUCT_SYMBIOS_FC929X:
 220                 mpt->is_fc = 1;
 221                 break;
 222         default:
 223                 break;
 224         }
 225         mpt->dev = dev;
 226         mpt->unit = device_get_unit(dev);
 227         mpt_set_options(mpt);
 228         mpt->verbose += (bootverbose != 0)? 1 : 0;
 229
 230         /* Make sure memory access decoders are enabled */
 231         cmd = pci_read_config(dev, PCIR_COMMAND, 2);
 232         if ((cmd & PCIM_CMD_MEMEN) == 0) {
 233                 device_printf(dev, "Memory accesses disabled");
 234                 goto bad;
 235         }
 236
 237         /*
 238          * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set.
 239          */
 240         cmd |=
 241             PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN |
 242             PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN;
 243         pci_write_config(dev, PCIR_COMMAND, cmd, 2);
 244
 245         /*
 246          * Make sure we've disabled the ROM.
 247          */
 248         data = pci_read_config(dev, PCIR_BIOS, 4);
 249         data &= ~1;
 250         pci_write_config(dev, PCIR_BIOS, data, 4);
 251
 252
 253         /*
 254          * Is this part a dual?
 255          * If so, link with our partner (around yet)
 256          */
 257         if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_SYMBIOS_FC929 ||
 258             (pci_get_device(dev) & ~1) == PCI_PRODUCT_SYMBIOS_FC929X ||
 259             (pci_get_device(dev) & ~1) == PCI_PRODUCT_SYMBIOS_1030) {
 260                 mpt_link_peer(mpt);
 261         }
 262
 263         /* Set up the memory regions */
 264         /* Allocate kernel virtual memory for the 9x9's Mem0 region */
 265         mpt->pci_reg_id = MEM_MAP_REG;
 266         mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY,
 267                         &mpt->pci_reg_id, 0, ~0, 0, RF_ACTIVE);
 268         if (mpt->pci_reg == NULL) {
 269                 device_printf(dev, "unable to map any ports\n");
 270                 goto bad;
 271         }
 272         mpt->pci_st = rman_get_bustag(mpt->pci_reg);
 273         mpt->pci_sh = rman_get_bushandle(mpt->pci_reg);
 274         /*   Get the Physical Address */
 275         mpt->pci_pa = rman_get_start(mpt->pci_reg);
 276
 277         /* Get a handle to the interrupt */
 278         iqd = 0;
 279         mpt->pci_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &iqd, 0, ~0,
 280             1, RF_ACTIVE | RF_SHAREABLE);
 281         if (mpt->pci_irq == NULL) {
 282                 device_printf(dev, "could not allocate interrupt\n");
 283                 goto bad;
 284         }
 285
 286         /* Register the interrupt handler */
 287         if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr,
 288                            mpt, &mpt->ih, NULL)) {
 289                 device_printf(dev, "could not setup interrupt\n");
 290                 goto bad;
 291         }
 292
 293         MPT_LOCK_SETUP(mpt);
 294
 295         /* Disable interrupts at the part */
 296         mpt_disable_ints(mpt);
 297
 298         /* Allocate dma memory */
 299         if (mpt_dma_mem_alloc(mpt)) {
 300                 device_printf(dev, "Could not allocate DMA memory\n");
 301                 goto bad;
 302         }
 303
 304         /*
 305          * Save the PCI config register values
 306          *
 307          * Hard resets are known to screw up the BAR for diagnostic
 308          * memory accesses (Mem1).
 309          *
 310          * Using Mem1 is known to make the chip stop responding to
 311          * configuration space transfers, so we need to save it now
 312          */
 313
 314         mpt_read_config_regs(mpt);
 315
 316         /* Initialize the hardware */
 317         if (mpt->disabled == 0) {
 318                 MPT_LOCK(mpt);
 319                 if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) {
 320                         MPT_UNLOCK(mpt);
 321                         goto bad;
 322                 }
 323
 324                 /*
 325                  *  Attach to CAM
 326                  */
 327                 mpt_cam_attach(mpt);
 328                 MPT_UNLOCK(mpt);
 329         }
 330
 331         return (0);
 332
 333 bad:
 334         mpt_dma_mem_free(mpt);
 335         mpt_free_bus_resources(mpt);
 336
 337         /*
 338          * but return zero to preserve unit numbering
 339          */
 340         return (0);
 341 }
 342
 343 /*
 344  * Free bus resources
 345  */
 346 static void
 347 mpt_free_bus_resources(mpt_softc_t *mpt)
 348 {
 349         if (mpt->ih) {
 350                 bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih);
 351                 mpt->ih = 0;
 352         }
 353
 354         if (mpt->pci_irq) {
 355                 bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq);
 356                 mpt->pci_irq = 0;
 357         }
 358
 359         if (mpt->pci_reg) {
 360                 bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_reg_id,
 361                         mpt->pci_reg);
 362                 mpt->pci_reg = 0;
 363         }
 364         MPT_LOCK_DESTROY(mpt);
 365 }
 366
 367
 368 /*
 369  * Disconnect ourselves from the system.
 370  */
 371 static int
 372 mpt_detach(device_t dev)
 373 {
 374         mpt_softc_t *mpt;
 375         mpt  = (mpt_softc_t*) device_get_softc(dev);
 376
 377         device_printf(mpt->dev,"mpt_detach!\n");
 378
 379         if (mpt) {
 380                 mpt_disable_ints(mpt);
 381                 mpt_cam_detach(mpt);
 382                 mpt_reset(mpt);
 383                 mpt_dma_mem_free(mpt);
 384                 mpt_free_bus_resources(mpt);
 385         }
 386         return(0);
 387 }
 388
 389
 390 /*
 391  * Disable the hardware
 392  */
 393 static int
 394 mpt_shutdown(device_t dev)
 395 {
 396         mpt_softc_t *mpt;
 397         mpt  = (mpt_softc_t*) device_get_softc(dev);
 398
 399         if (mpt) {
 400                 mpt_reset(mpt);
 401         }
 402         return(0);
 403 }
 404
 405
 406 struct imush {
 407         mpt_softc_t *mpt;
 408         int error;
 409         u_int32_t phys;
 410 };
 411
 412 static void
 413 mpt_map_rquest(void *arg, bus_dma_segment_t *segs, int nseg, int error)
 414 {
 415         struct imush *imushp = (struct imush *) arg;
 416         imushp->error = error;
 417         imushp->phys = segs->ds_addr;
 418 }
 419
 420
 421 static int
 422 mpt_dma_mem_alloc(mpt_softc_t *mpt)
 423 {
 424         int i, error;
 425         u_char *vptr;
 426         u_int32_t pptr, end;
 427         size_t len;
 428         struct imush im;
 429         device_t dev = mpt->dev;
 430
 431         /* Check if we alreay have allocated the reply memory */
 432         if (mpt->reply_phys != 0) {
 433                 return 0;
 434         }
 435
 436         len = sizeof (request_t *) * MPT_REQ_MEM_SIZE(mpt);
 437         mpt->request_pool = (request_t *) kmalloc(len, M_DEVBUF, M_WAITOK);
 438         bzero(mpt->request_pool, len);
 439
 440         /*
 441          * Create a dma tag for this device
 442          *
 443          * Align at page boundaries, limit to 32-bit addressing
 444          * (The chip supports 64-bit addressing, but this driver doesn't)
 445          */
 446         if (bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT,
 447             BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT,
 448             BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 0,
 449             &mpt->parent_dmat) != 0) {
 450                 device_printf(dev, "cannot create parent dma tag\n");
 451                 return (1);
 452         }
 453
 454         /* Create a child tag for reply buffers */
 455         if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
 456             0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
 457             NULL, NULL, PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0,
 458             &mpt->reply_dmat) != 0) {
 459                 device_printf(dev, "cannot create a dma tag for replies\n");
 460                 return (1);
 461         }
 462
 463         /* Allocate some DMA accessable memory for replies */
 464         if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply,
 465             BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) {
 466                 device_printf(dev, "cannot allocate %d bytes of reply memory\n",
 467                      PAGE_SIZE);
 468                 return (1);
 469         }
 470
 471         im.mpt = mpt;
 472         im.error = 0;
 473
 474         /* Load and lock it into "bus space" */
 475         bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply,
 476             PAGE_SIZE, mpt_map_rquest, &im, 0);
 477
 478         if (im.error) {
 479                 device_printf(dev,
 480                     "error %d loading dma map for DMA reply queue\n", im.error);
 481                 return (1);
 482         }
 483         mpt->reply_phys = im.phys;
 484
 485         /* Create a child tag for data buffers */
 486         if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
 487             0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
 488             NULL, NULL, MAXBSIZE, MPT_SGL_MAX, BUS_SPACE_MAXSIZE_32BIT, 0,
 489             &mpt->buffer_dmat) != 0) {
 490                 device_printf(dev,
 491                     "cannot create a dma tag for data buffers\n");
 492                 return (1);
 493         }
 494
 495         /* Create a child tag for request buffers */
 496         if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
 497             0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
 498             NULL, NULL, MPT_REQ_MEM_SIZE(mpt), 1, BUS_SPACE_MAXSIZE_32BIT, 0,
 499             &mpt->request_dmat) != 0) {
 500                 device_printf(dev, "cannot create a dma tag for requests\n");
 501                 return (1);
 502         }
 503
 504         /* Allocate some DMA accessable memory for requests */
 505         if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request,
 506             BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) {
 507                 device_printf(dev,
 508                     "cannot allocate %d bytes of request memory\n",
 509                     MPT_REQ_MEM_SIZE(mpt));
 510                 return (1);
 511         }
 512
 513         im.mpt = mpt;
 514         im.error = 0;
 515
 516         /* Load and lock it into "bus space" */
 517         bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request,
 518             MPT_REQ_MEM_SIZE(mpt), mpt_map_rquest, &im, 0);
 519
 520         if (im.error) {
 521                 device_printf(dev,
 522                     "error %d loading dma map for DMA request queue\n",
 523                     im.error);
 524                 return (1);
 525         }
 526         mpt->request_phys = im.phys;
 527
 528         i = 0;
 529         pptr =  mpt->request_phys;
 530         vptr =  mpt->request;
 531         end = pptr + MPT_REQ_MEM_SIZE(mpt);
 532         while(pptr < end) {
 533                 request_t *req = &mpt->request_pool[i];
 534                 req->index = i++;
 535
 536                 /* Store location of Request Data */
 537                 req->req_pbuf = pptr;
 538                 req->req_vbuf = vptr;
 539
 540                 pptr += MPT_REQUEST_AREA;
 541                 vptr += MPT_REQUEST_AREA;
 542
 543                 req->sense_pbuf = (pptr - MPT_SENSE_SIZE);
 544                 req->sense_vbuf = (vptr - MPT_SENSE_SIZE);
 545
 546                 error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap);
 547                 if (error) {
 548                         device_printf(dev,
 549                              "error %d creating per-cmd DMA maps\n", error);
 550                         return (1);
 551                 }
 552         }
 553         return (0);
 554 }
 555
 556
 557
 558 /* Deallocate memory that was allocated by mpt_dma_mem_alloc
 559  */
 560 static void
 561 mpt_dma_mem_free(mpt_softc_t *mpt)
 562 {
 563         int i;
 564
 565         /* Make sure we aren't double destroying */
 566         if (mpt->reply_dmat == 0) {
 567                 if (mpt->verbose)
 568                         device_printf(mpt->dev,"Already released dma memory\n");
 569                 return;
 570         }
 571
 572         for (i = 0; i < MPT_MAX_REQUESTS(mpt); i++) {
 573                 bus_dmamap_destroy(mpt->buffer_dmat, mpt->request_pool[i].dmap);
 574         }
 575         bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap);
 576         bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap);
 577         bus_dma_tag_destroy(mpt->request_dmat);
 578         bus_dma_tag_destroy(mpt->buffer_dmat);
 579         bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap);
 580         bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap);
 581         bus_dma_tag_destroy(mpt->reply_dmat);
 582         bus_dma_tag_destroy(mpt->parent_dmat);
 583         mpt->reply_dmat = 0;
 584         kfree(mpt->request_pool, M_DEVBUF);
 585         mpt->request_pool = 0;
 586
 587 }
 588
 589
 590
 591 /* Reads modifiable (via PCI transactions) config registers */
 592 static void
 593 mpt_read_config_regs(mpt_softc_t *mpt)
 594 {
 595         mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2);
 596         mpt->pci_cfg.LatencyTimer_LineSize =
 597             pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2);
 598         mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_MAPS, 4);
 599         mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0x4, 4);
 600         mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x8, 4);
 601         mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0xC, 4);
 602         mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x10, 4);
 603         mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4);
 604         mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1);
 605         mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4);
 606 }
 607
 608 /* Sets modifiable config registers */
 609 void
 610 mpt_set_config_regs(mpt_softc_t *mpt)
 611 {
 612         u_int32_t val;
 613
 614 #define MPT_CHECK(reg, offset, size)                                    \
 615         val = pci_read_config(mpt->dev, offset, size);                  \
 616         if (mpt->pci_cfg.reg != val) {                                  \
 617                 device_printf(mpt->dev,                                 \
 618                     "Restoring " #reg " to 0x%X from 0x%X\n",           \
 619                     mpt->pci_cfg.reg, val);                             \
 620         }
 621
 622         if (mpt->verbose) {
 623                 MPT_CHECK(Command, PCIR_COMMAND, 2);
 624                 MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2);
 625                 MPT_CHECK(IO_BAR, PCIR_MAPS, 4);
 626                 MPT_CHECK(Mem0_BAR[0], PCIR_MAPS+0x4, 4);
 627                 MPT_CHECK(Mem0_BAR[1], PCIR_MAPS+0x8, 4);
 628                 MPT_CHECK(Mem1_BAR[0], PCIR_MAPS+0xC, 4);
 629                 MPT_CHECK(Mem1_BAR[1], PCIR_MAPS+0x10, 4);
 630                 MPT_CHECK(ROM_BAR, PCIR_BIOS, 4);
 631                 MPT_CHECK(IntLine, PCIR_INTLINE, 1);
 632                 MPT_CHECK(PMCSR, 0x44, 4);
 633         }
 634 #undef MPT_CHECK
 635
 636         pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2);
 637         pci_write_config(mpt->dev, PCIR_CACHELNSZ,
 638             mpt->pci_cfg.LatencyTimer_LineSize, 2);
 639         pci_write_config(mpt->dev, PCIR_MAPS, mpt->pci_cfg.IO_BAR, 4);
 640         pci_write_config(mpt->dev, PCIR_MAPS+0x4, mpt->pci_cfg.Mem0_BAR[0], 4);
 641         pci_write_config(mpt->dev, PCIR_MAPS+0x8, mpt->pci_cfg.Mem0_BAR[1], 4);
 642         pci_write_config(mpt->dev, PCIR_MAPS+0xC, mpt->pci_cfg.Mem1_BAR[0], 4);
 643         pci_write_config(mpt->dev, PCIR_MAPS+0x10, mpt->pci_cfg.Mem1_BAR[1], 4);
 644         pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4);
 645         pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1);
 646         pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4);
 647 }
 648
 649 static void
 650 mpt_pci_intr(void *arg)
 651 {
 652         mpt_softc_t *mpt = arg;
 653         MPT_LOCK(mpt);
 654         (void) mpt_intr(mpt);
 655         MPT_UNLOCK(mpt);
 656 }