sys/dev/disk/mpt/mpt_pci.c

   1 /*-
   2  * PCI specific probe and attach routines for LSI Fusion Adapters
   3  * FreeBSD Version.
   4  *
   5  * Copyright (c) 2000, 2001 by Greg Ansley
   6  * Partially derived from Matt Jacob's ISP driver.
   7  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002 by Matthew Jacob
   8  * Feral Software
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice immediately at the beginning of the file, without modification,
  16  *    this list of conditions, and the following disclaimer.
  17  * 2. The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32 /*-
  33  * Copyright (c) 2002, 2006 by Matthew Jacob
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions are
  38  * met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  42  *    substantially similar to the "NO WARRANTY" disclaimer below
  43  *    ("Disclaimer") and any redistribution must be conditioned upon including
  44  *    a substantially similar Disclaimer requirement for further binary
  45  *    redistribution.
  46  * 3. Neither the names of the above listed copyright holders nor the names
  47  *    of any contributors may be used to endorse or promote products derived
  48  *    from this software without specific prior written permission.
  49  *
  50  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  51  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  53  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  54  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  55  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  56  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  57  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  58  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  59  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
  60  * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  *
  62  * Support from Chris Ellsworth in order to make SAS adapters work
  63  * is gratefully acknowledged.
  64  *
  65  * Support from LSI-Logic has also gone a great deal toward making this a
  66  * workable subsystem and is gratefully acknowledged.
  67  */
  68 /*
  69  * Copyright (c) 2004, Avid Technology, Inc. and its contributors.
  70  * Copyright (c) 2005, WHEEL Sp. z o.o.
  71  * Copyright (c) 2004, 2005 Justin T. Gibbs
  72  * All rights reserved.
  73  *
  74  * Redistribution and use in source and binary forms, with or without
  75  * modification, are permitted provided that the following conditions are
  76  * met:
  77  * 1. Redistributions of source code must retain the above copyright
  78  *    notice, this list of conditions and the following disclaimer.
  79  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  80  *    substantially similar to the "NO WARRANTY" disclaimer below
  81  *    ("Disclaimer") and any redistribution must be conditioned upon including
  82  *    a substantially similar Disclaimer requirement for further binary
  83  *    redistribution.
  84  * 3. Neither the names of the above listed copyright holders nor the names
  85  *    of any contributors may be used to endorse or promote products derived
  86  *    from this software without specific prior written permission.
  87  *
  88  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  89  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  90  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  91  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  92  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  93  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  94  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  95  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  96  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  97  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF THE COPYRIGHT
  98  * OWNER OR CONTRIBUTOR IS ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  99  *
 100  * $FreeBSD: src/sys/dev/mpt/mpt_pci.c,v 1.70 2012/04/04 20:42:45 marius Exp $
 101  */
 102
 103 #include <dev/disk/mpt/mpt.h>
 104 #include <dev/disk/mpt/mpt_cam.h>
 105 #include <dev/disk/mpt/mpt_raid.h>
 106
 107 /*
 108  * XXX it seems no other MPT driver knows about the following chips.
 109  */
 110
 111 #ifndef MPI_MANUFACTPAGE_DEVICEID_FC909_FB
 112 #define MPI_MANUFACTPAGE_DEVICEID_FC909_FB      0x0620
 113 #endif
 114
 115 #ifndef MPI_MANUFACTPAGE_DEVICEID_FC919_LAN_FB
 116 #define MPI_MANUFACTPAGE_DEVICEID_FC919_LAN_FB  0x0625
 117 #endif
 118
 119 #ifndef MPI_MANUFACTPAGE_DEVICEID_FC929_LAN_FB
 120 #define MPI_MANUFACTPAGE_DEVICEID_FC929_LAN_FB  0x0623
 121 #endif
 122
 123 #ifndef MPI_MANUFACTPAGE_DEVICEID_FC929X_LAN_FB
 124 #define MPI_MANUFACTPAGE_DEVICEID_FC929X_LAN_FB 0x0627
 125 #endif
 126
 127 #ifndef MPI_MANUFACTPAGE_DEVICEID_FC919X_LAN_FB
 128 #define MPI_MANUFACTPAGE_DEVICEID_FC919X_LAN_FB 0x0629
 129 #endif
 130
 131 #ifndef MPI_MANUFACTPAGE_DEVID_SAS1068A_FB
 132 #define MPI_MANUFACTPAGE_DEVID_SAS1068A_FB      0x0055
 133 #endif
 134
 135 #ifndef MPI_MANUFACTPAGE_DEVID_SAS1068E_FB
 136 #define MPI_MANUFACTPAGE_DEVID_SAS1068E_FB      0x0059
 137 #endif
 138
 139 #ifndef MPI_MANUFACTPAGE_DEVID_SAS1078DE_FB
 140 #define MPI_MANUFACTPAGE_DEVID_SAS1078DE_FB     0x007C
 141 #endif
 142
 143 static int mpt_pci_probe(device_t);
 144 static int mpt_pci_attach(device_t);
 145 static void mpt_free_bus_resources(struct mpt_softc *mpt);
 146 static int mpt_pci_detach(device_t);
 147 static int mpt_pci_shutdown(device_t);
 148 static int mpt_dma_mem_alloc(struct mpt_softc *mpt);
 149 static void mpt_dma_mem_free(struct mpt_softc *mpt);
 150 #if 0
 151 static void mpt_read_config_regs(struct mpt_softc *mpt);
 152 static void mpt_set_config_regs(struct mpt_softc *mpt);
 153 #endif
 154 static void mpt_pci_intr(void *);
 155
 156 static device_method_t mpt_methods[] = {
 157         /* Device interface */
 158         DEVMETHOD(device_probe,         mpt_pci_probe),
 159         DEVMETHOD(device_attach,        mpt_pci_attach),
 160         DEVMETHOD(device_detach,        mpt_pci_detach),
 161         DEVMETHOD(device_shutdown,      mpt_pci_shutdown),
 162         DEVMETHOD_END
 163 };
 164
 165 static driver_t mpt_driver = {
 166         "mpt", mpt_methods, sizeof(struct mpt_softc)
 167 };
 168
 169 static devclass_t mpt_devclass;
 170 DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, NULL, NULL);
 171 MODULE_DEPEND(mpt, pci, 1, 1, 1);
 172 MODULE_VERSION(mpt, 1);
 173
 174 static int
 175 mpt_pci_probe(device_t dev)
 176 {
 177         const char *desc;
 178         int rval;
 179
 180         if (pci_get_vendor(dev) != MPI_MANUFACTPAGE_VENDORID_LSILOGIC)
 181                 return (ENXIO);
 182
 183         rval = BUS_PROBE_DEFAULT;
 184         switch (pci_get_device(dev)) {
 185         case MPI_MANUFACTPAGE_DEVICEID_FC909_FB:
 186                 desc = "LSILogic FC909 FC Adapter";
 187                 break;
 188         case MPI_MANUFACTPAGE_DEVICEID_FC909:
 189                 desc = "LSILogic FC909A FC Adapter";
 190                 break;
 191         case MPI_MANUFACTPAGE_DEVICEID_FC919:
 192                 desc = "LSILogic FC919 FC Adapter";
 193                 break;
 194         case MPI_MANUFACTPAGE_DEVICEID_FC919_LAN_FB:
 195                 desc = "LSILogic FC919 LAN Adapter";
 196                 break;
 197         case MPI_MANUFACTPAGE_DEVICEID_FC929:
 198                 desc = "Dual LSILogic FC929 FC Adapter";
 199                 break;
 200         case MPI_MANUFACTPAGE_DEVICEID_FC929_LAN_FB:
 201                 desc = "Dual LSILogic FC929 LAN Adapter";
 202                 break;
 203         case MPI_MANUFACTPAGE_DEVICEID_FC919X:
 204                 desc = "LSILogic FC919 FC PCI-X Adapter";
 205                 break;
 206         case MPI_MANUFACTPAGE_DEVICEID_FC919X_LAN_FB:
 207                 desc = "LSILogic FC919 LAN PCI-X Adapter";
 208                 break;
 209         case MPI_MANUFACTPAGE_DEVICEID_FC929X:
 210                 desc = "Dual LSILogic FC929X 2Gb/s FC PCI-X Adapter";
 211                 break;
 212         case MPI_MANUFACTPAGE_DEVICEID_FC929X_LAN_FB:
 213                 desc = "Dual LSILogic FC929X LAN PCI-X Adapter";
 214                 break;
 215         case MPI_MANUFACTPAGE_DEVICEID_FC949E:
 216                 desc = "Dual LSILogic FC7X04X 4Gb/s FC PCI-Express Adapter";
 217                 break;
 218         case MPI_MANUFACTPAGE_DEVICEID_FC949X:
 219                 desc = "Dual LSILogic FC7X04X 4Gb/s FC PCI-X Adapter";
 220                 break;
 221         case MPI_MANUFACTPAGE_DEVID_53C1030:
 222         case MPI_MANUFACTPAGE_DEVID_53C1030ZC:
 223                 desc = "LSILogic 1030 Ultra4 Adapter";
 224                 break;
 225         case MPI_MANUFACTPAGE_DEVID_SAS1068E_FB:
 226                 /*
 227                  * Allow mfi(4) to claim this device in case it's in MegaRAID
 228                  * mode.
 229                  */
 230                 rval = BUS_PROBE_LOW_PRIORITY;
 231                 /* FALLTHROUGH */
 232         case MPI_MANUFACTPAGE_DEVID_SAS1064:
 233         case MPI_MANUFACTPAGE_DEVID_SAS1064A:
 234         case MPI_MANUFACTPAGE_DEVID_SAS1064E:
 235         case MPI_MANUFACTPAGE_DEVID_SAS1066:
 236         case MPI_MANUFACTPAGE_DEVID_SAS1066E:
 237         case MPI_MANUFACTPAGE_DEVID_SAS1068:
 238         case MPI_MANUFACTPAGE_DEVID_SAS1068A_FB:
 239         case MPI_MANUFACTPAGE_DEVID_SAS1068E:
 240         case MPI_MANUFACTPAGE_DEVID_SAS1078:
 241         case MPI_MANUFACTPAGE_DEVID_SAS1078DE_FB:
 242                 desc = "LSILogic SAS/SATA Adapter";
 243                 break;
 244         default:
 245                 return (ENXIO);
 246         }
 247
 248         device_set_desc(dev, desc);
 249         return (rval);
 250 }
 251
 252 static void
 253 mpt_set_options(struct mpt_softc *mpt)
 254 {
 255         int bitmap;
 256         int tval;
 257
 258         bitmap = 0;
 259         if (kgetenv_int("mpt_disable", &bitmap)) {
 260                 if (bitmap & (1 << mpt->unit)) {
 261                         mpt->disabled = 1;
 262                 }
 263         }
 264         bitmap = 0;
 265         if (kgetenv_int("mpt_debug", &bitmap)) {
 266                 if (bitmap & (1 << mpt->unit)) {
 267                         mpt->verbose = MPT_PRT_DEBUG;
 268                 }
 269         }
 270         bitmap = 0;
 271         if (kgetenv_int("mpt_debug1", &bitmap)) {
 272                 if (bitmap & (1 << mpt->unit)) {
 273                         mpt->verbose = MPT_PRT_DEBUG1;
 274                 }
 275         }
 276         bitmap = 0;
 277         if (kgetenv_int("mpt_debug2", &bitmap)) {
 278                 if (bitmap & (1 << mpt->unit)) {
 279                         mpt->verbose = MPT_PRT_DEBUG2;
 280                 }
 281         }
 282         bitmap = 0;
 283         if (kgetenv_int("mpt_debug3", &bitmap)) {
 284                 if (bitmap & (1 << mpt->unit)) {
 285                         mpt->verbose = MPT_PRT_DEBUG3;
 286                 }
 287         }
 288
 289         mpt->cfg_role = MPT_ROLE_DEFAULT;
 290         bitmap = 0;
 291         if (kgetenv_int("mpt_nil_role", &bitmap)) {
 292                 if (bitmap & (1 << mpt->unit)) {
 293                         mpt->cfg_role = 0;
 294                 }
 295                 mpt->do_cfg_role = 1;
 296         }
 297         bitmap = 0;
 298         if (kgetenv_int("mpt_tgt_role", &bitmap)) {
 299                 if (bitmap & (1 << mpt->unit)) {
 300                         mpt->cfg_role |= MPT_ROLE_TARGET;
 301                 }
 302                 mpt->do_cfg_role = 1;
 303         }
 304         bitmap = 0;
 305         if (kgetenv_int("mpt_ini_role", &bitmap)) {
 306                 if (bitmap & (1 << mpt->unit)) {
 307                         mpt->cfg_role |= MPT_ROLE_INITIATOR;
 308                 }
 309                 mpt->do_cfg_role = 1;
 310         }
 311         tval = 0;
 312         mpt->msi_enable = 0;
 313         if (mpt->is_sas)
 314                 mpt->msi_enable = 1;
 315         if (kgetenv_int("hw.mpt.msi.enable", &tval))
 316                 mpt->msi_enable = tval;
 317 }
 318
 319 #if 0
 320 static void
 321 mpt_link_peer(struct mpt_softc *mpt)
 322 {
 323         struct mpt_softc *mpt2;
 324
 325         if (mpt->unit == 0) {
 326                 return;
 327         }
 328         /*
 329          * XXX: depends on probe order
 330          */
 331         mpt2 = (struct mpt_softc *)devclass_get_softc(mpt_devclass,mpt->unit-1);
 332
 333         if (mpt2 == NULL) {
 334                 return;
 335         }
 336         if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) {
 337                 return;
 338         }
 339         if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) {
 340                 return;
 341         }
 342         mpt->mpt2 = mpt2;
 343         mpt2->mpt2 = mpt;
 344         if (mpt->verbose >= MPT_PRT_DEBUG) {
 345                 mpt_prt(mpt, "linking with peer (mpt%d)\n",
 346                     device_get_unit(mpt2->dev));
 347         }
 348 }
 349
 350 static void
 351 mpt_unlink_peer(struct mpt_softc *mpt)
 352 {
 353
 354         if (mpt->mpt2) {
 355                 mpt->mpt2->mpt2 = NULL;
 356         }
 357 }
 358 #endif
 359
 360 static int
 361 mpt_pci_attach(device_t dev)
 362 {
 363         struct mpt_softc *mpt;
 364         int               iqd;
 365         uint32_t          val;
 366         int               mpt_io_bar, mpt_mem_bar;
 367         u_int             irq_flags;
 368
 369         mpt  = (struct mpt_softc*)device_get_softc(dev);
 370
 371         switch (pci_get_device(dev)) {
 372         case MPI_MANUFACTPAGE_DEVICEID_FC909_FB:
 373         case MPI_MANUFACTPAGE_DEVICEID_FC909:
 374         case MPI_MANUFACTPAGE_DEVICEID_FC919:
 375         case MPI_MANUFACTPAGE_DEVICEID_FC919_LAN_FB:
 376         case MPI_MANUFACTPAGE_DEVICEID_FC929:
 377         case MPI_MANUFACTPAGE_DEVICEID_FC929_LAN_FB:
 378         case MPI_MANUFACTPAGE_DEVICEID_FC929X:
 379         case MPI_MANUFACTPAGE_DEVICEID_FC929X_LAN_FB:
 380         case MPI_MANUFACTPAGE_DEVICEID_FC919X:
 381         case MPI_MANUFACTPAGE_DEVICEID_FC919X_LAN_FB:
 382         case MPI_MANUFACTPAGE_DEVICEID_FC949E:
 383         case MPI_MANUFACTPAGE_DEVICEID_FC949X:
 384                 mpt->is_fc = 1;
 385                 break;
 386         case MPI_MANUFACTPAGE_DEVID_SAS1078:
 387         case MPI_MANUFACTPAGE_DEVID_SAS1078DE_FB:
 388                 mpt->is_1078 = 1;
 389                 /* FALLTHROUGH */
 390         case MPI_MANUFACTPAGE_DEVID_SAS1064:
 391         case MPI_MANUFACTPAGE_DEVID_SAS1064A:
 392         case MPI_MANUFACTPAGE_DEVID_SAS1064E:
 393         case MPI_MANUFACTPAGE_DEVID_SAS1066:
 394         case MPI_MANUFACTPAGE_DEVID_SAS1066E:
 395         case MPI_MANUFACTPAGE_DEVID_SAS1068:
 396         case MPI_MANUFACTPAGE_DEVID_SAS1068A_FB:
 397         case MPI_MANUFACTPAGE_DEVID_SAS1068E:
 398         case MPI_MANUFACTPAGE_DEVID_SAS1068E_FB:
 399                 mpt->is_sas = 1;
 400                 break;
 401         default:
 402                 mpt->is_spi = 1;
 403                 break;
 404         }
 405         mpt->dev = dev;
 406         mpt->unit = device_get_unit(dev);
 407         mpt->raid_resync_rate = MPT_RAID_RESYNC_RATE_DEFAULT;
 408         mpt->raid_mwce_setting = MPT_RAID_MWCE_DEFAULT;
 409         mpt->raid_queue_depth = MPT_RAID_QUEUE_DEPTH_DEFAULT;
 410         mpt->verbose = MPT_PRT_NONE;
 411         mpt->role = MPT_ROLE_NONE;
 412         mpt->mpt_ini_id = MPT_INI_ID_NONE;
 413         mpt_set_options(mpt);
 414         if (mpt->verbose == MPT_PRT_NONE) {
 415                 mpt->verbose = MPT_PRT_WARN;
 416                 /* Print INFO level (if any) if bootverbose is set */
 417                 mpt->verbose += (bootverbose != 0)? 1 : 0;
 418         }
 419
 420         /*
 421          * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set.
 422          */
 423         val = pci_read_config(dev, PCIR_COMMAND, 2);
 424         val |= PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN |
 425             PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN;
 426         pci_write_config(dev, PCIR_COMMAND, val, 2);
 427
 428         /*
 429          * Make sure we've disabled the ROM.
 430          */
 431         val = pci_read_config(dev, PCIR_BIOS, 4);
 432         val &= ~PCIM_BIOS_ENABLE;
 433         pci_write_config(dev, PCIR_BIOS, val, 4);
 434
 435 #if 0
 436         /*
 437          * Is this part a dual?
 438          * If so, link with our partner (around yet)
 439          */
 440         switch (pci_get_device(dev)) {
 441         case MPI_MANUFACTPAGE_DEVICEID_FC929:
 442         case MPI_MANUFACTPAGE_DEVICEID_FC929_LAN_FB:
 443         case MPI_MANUFACTPAGE_DEVICEID_FC949E:
 444         case MPI_MANUFACTPAGE_DEVICEID_FC949X:
 445         case MPI_MANUFACTPAGE_DEVID_53C1030:
 446         case MPI_MANUFACTPAGE_DEVID_53C1030ZC:
 447                 mpt_link_peer(mpt);
 448                 break;
 449         default:
 450                 break;
 451         }
 452 #endif
 453
 454         /*
 455          * Figure out which are the I/O and MEM Bars
 456          */
 457         val = pci_read_config(dev, PCIR_BAR(0), 4);
 458         if (PCI_BAR_IO(val)) {
 459                 /* BAR0 is IO, BAR1 is memory */
 460                 mpt_io_bar = 0;
 461                 mpt_mem_bar = 1;
 462         } else {
 463                 /* BAR0 is memory, BAR1 is IO */
 464                 mpt_mem_bar = 0;
 465                 mpt_io_bar = 1;
 466         }
 467
 468         /*
 469          * Set up register access.  PIO mode is required for
 470          * certain reset operations (but must be disabled for
 471          * some cards otherwise).
 472          */
 473         mpt_io_bar = PCIR_BAR(mpt_io_bar);
 474         mpt->pci_pio_reg = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
 475             &mpt_io_bar, RF_ACTIVE);
 476         if (mpt->pci_pio_reg == NULL) {
 477                 if (bootverbose) {
 478                         device_printf(dev,
 479                             "unable to map registers in PIO mode\n");
 480                 }
 481         } else {
 482                 mpt->pci_pio_st = rman_get_bustag(mpt->pci_pio_reg);
 483                 mpt->pci_pio_sh = rman_get_bushandle(mpt->pci_pio_reg);
 484         }
 485
 486         mpt_mem_bar = PCIR_BAR(mpt_mem_bar);
 487         mpt->pci_reg = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 488             &mpt_mem_bar, RF_ACTIVE);
 489         if (mpt->pci_reg == NULL) {
 490                 if (bootverbose || mpt->is_sas || mpt->pci_pio_reg == NULL) {
 491                         device_printf(dev,
 492                             "Unable to memory map registers.\n");
 493                 }
 494                 if (mpt->is_sas || mpt->pci_pio_reg == NULL) {
 495                         device_printf(dev, "Giving Up.\n");
 496                         goto bad;
 497                 }
 498                 if (bootverbose) {
 499                         device_printf(dev, "Falling back to PIO mode.\n");
 500                 }
 501                 mpt->pci_st = mpt->pci_pio_st;
 502                 mpt->pci_sh = mpt->pci_pio_sh;
 503         } else {
 504                 mpt->pci_st = rman_get_bustag(mpt->pci_reg);
 505                 mpt->pci_sh = rman_get_bushandle(mpt->pci_reg);
 506         }
 507
 508         /* Get a handle to the interrupt */
 509         iqd = 0;
 510 #if 0 /* XXX MSI-X support */
 511         if (mpt->msi_enable) {
 512                 /*
 513                  * First try to alloc an MSI-X message.  If that
 514                  * fails, then try to alloc an MSI message instead.
 515                  */
 516                 if (pci_msix_count(dev) == 1) {
 517                         mpt->pci_msi_count = 1;
 518                         if (pci_alloc_msix(dev, &mpt->pci_msi_count) == 0) {
 519                                 iqd = 1;
 520                         } else {
 521                                 mpt->pci_msi_count = 0;
 522                         }
 523                 }
 524         }
 525 #endif
 526         mpt->irq_type = pci_alloc_1intr(dev, mpt->msi_enable, &iqd,
 527             &irq_flags);
 528         mpt->pci_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &iqd,
 529             irq_flags);
 530         if (mpt->pci_irq == NULL) {
 531                 device_printf(dev, "could not allocate interrupt\n");
 532                 goto bad;
 533         }
 534
 535         MPT_LOCK_SETUP(mpt);
 536
 537         /* Disable interrupts at the part */
 538         mpt_disable_ints(mpt);
 539
 540         /* Register the interrupt handler */
 541         if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr,
 542             mpt, &mpt->ih, NULL)) {
 543                 device_printf(dev, "could not setup interrupt\n");
 544                 goto bad;
 545         }
 546
 547         /* Allocate dma memory */
 548         if (mpt_dma_mem_alloc(mpt)) {
 549                 mpt_prt(mpt, "Could not allocate DMA memory\n");
 550                 goto bad;
 551         }
 552
 553 #if 0
 554         /*
 555          * Save the PCI config register values
 556          *
 557          * Hard resets are known to screw up the BAR for diagnostic
 558          * memory accesses (Mem1).
 559          *
 560          * Using Mem1 is known to make the chip stop responding to
 561          * configuration space transfers, so we need to save it now
 562          */
 563
 564         mpt_read_config_regs(mpt);
 565 #endif
 566
 567         /*
 568          * Disable PIO until we need it
 569          */
 570         if (mpt->is_sas) {
 571                 pci_disable_io(dev, SYS_RES_IOPORT);
 572         }
 573
 574         /* Initialize the hardware */
 575         if (mpt->disabled == 0) {
 576                 if (mpt_attach(mpt) != 0) {
 577                         goto bad;
 578                 }
 579         } else {
 580                 mpt_prt(mpt, "device disabled at user request\n");
 581                 goto bad;
 582         }
 583
 584         mpt->eh = EVENTHANDLER_REGISTER(shutdown_post_sync, mpt_pci_shutdown,
 585             dev, SHUTDOWN_PRI_LAST);
 586
 587         if (mpt->eh == NULL) {
 588                 mpt_prt(mpt, "shutdown event registration failed\n");
 589                 mpt_disable_ints(mpt);
 590                 (void) mpt_detach(mpt);
 591                 mpt_reset(mpt, /*reinit*/FALSE);
 592                 mpt_raid_free_mem(mpt);
 593                 goto bad;
 594         }
 595         return (0);
 596
 597 bad:
 598         mpt_dma_mem_free(mpt);
 599         mpt_free_bus_resources(mpt);
 600 #if 0
 601         mpt_unlink_peer(mpt);
 602 #endif
 603
 604         MPT_LOCK_DESTROY(mpt);
 605
 606         /*
 607          * but return zero to preserve unit numbering
 608          */
 609         return (0);
 610 }
 611
 612 /*
 613  * Free bus resources
 614  */
 615 static void
 616 mpt_free_bus_resources(struct mpt_softc *mpt)
 617 {
 618
 619         if (mpt->ih) {
 620                 bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih);
 621                 mpt->ih = NULL;
 622         }
 623
 624         if (mpt->pci_irq) {
 625                 bus_release_resource(mpt->dev, SYS_RES_IRQ,
 626                     rman_get_rid(mpt->pci_irq), mpt->pci_irq);
 627                 if (mpt->irq_type == PCI_INTR_TYPE_MSI)
 628                         pci_release_msi(mpt->dev);
 629
 630                 mpt->pci_irq = NULL;
 631         }
 632
 633         if (mpt->pci_pio_reg) {
 634                 bus_release_resource(mpt->dev, SYS_RES_IOPORT,
 635                     rman_get_rid(mpt->pci_pio_reg), mpt->pci_pio_reg);
 636                 mpt->pci_pio_reg = NULL;
 637         }
 638
 639         if (mpt->pci_reg) {
 640                 bus_release_resource(mpt->dev, SYS_RES_MEMORY,
 641                     rman_get_rid(mpt->pci_reg), mpt->pci_reg);
 642                 mpt->pci_reg = NULL;
 643         }
 644 }
 645
 646 /*
 647  * Disconnect ourselves from the system.
 648  */
 649 static int
 650 mpt_pci_detach(device_t dev)
 651 {
 652         struct mpt_softc *mpt;
 653
 654         mpt  = (struct mpt_softc*)device_get_softc(dev);
 655
 656         if (mpt) {
 657                 mpt_disable_ints(mpt);
 658                 mpt_detach(mpt);
 659                 mpt_reset(mpt, /*reinit*/FALSE);
 660                 mpt_raid_free_mem(mpt);
 661                 mpt_dma_mem_free(mpt);
 662                 mpt_free_bus_resources(mpt);
 663 #if 0
 664                 mpt_unlink_peer(mpt);
 665 #endif
 666                 if (mpt->eh != NULL) {
 667                         EVENTHANDLER_DEREGISTER(shutdown_post_sync, mpt->eh);
 668                 }
 669                 MPT_LOCK_DESTROY(mpt);
 670         }
 671         return(0);
 672 }
 673
 674 /*
 675  * Disable the hardware
 676  */
 677 static int
 678 mpt_pci_shutdown(device_t dev)
 679 {
 680         struct mpt_softc *mpt;
 681
 682         mpt = (struct mpt_softc *)device_get_softc(dev);
 683         if (mpt)
 684                 return (mpt_shutdown(mpt));
 685         return(0);
 686 }
 687
 688 static int
 689 mpt_dma_mem_alloc(struct mpt_softc *mpt)
 690 {
 691         size_t len;
 692         struct mpt_map_info mi;
 693
 694         /* Check if we alreay have allocated the reply memory */
 695         if (mpt->reply_phys != 0) {
 696                 return 0;
 697         }
 698
 699         len = sizeof (request_t) * MPT_MAX_REQUESTS(mpt);
 700         mpt->request_pool = (request_t *)kmalloc(len, M_DEVBUF, M_WAITOK|M_ZERO);
 701         if (mpt->request_pool == NULL) {
 702                 mpt_prt(mpt, "cannot allocate request pool\n");
 703                 return (1);
 704         }
 705
 706         /*
 707          * Create a parent dma tag for this device.
 708          *
 709          * Align at byte boundaries,
 710          * Limit to 32-bit addressing for request/reply queues.
 711          */
 712         if (mpt_dma_tag_create(mpt, /*parent*/NULL,
 713             /*alignment*/1, /*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR,
 714             /*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL,
 715             /*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
 716             /*nsegments*/BUS_SPACE_UNRESTRICTED,
 717             /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/0,
 718             &mpt->parent_dmat) != 0) {
 719                 mpt_prt(mpt, "cannot create parent dma tag\n");
 720                 return (1);
 721         }
 722
 723         /* Create a child tag for reply buffers */
 724         if (mpt_dma_tag_create(mpt, mpt->parent_dmat, PAGE_SIZE, 0,
 725             BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR,
 726             NULL, NULL, 2 * PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0,
 727             &mpt->reply_dmat) != 0) {
 728                 mpt_prt(mpt, "cannot create a dma tag for replies\n");
 729                 return (1);
 730         }
 731
 732         /* Allocate some DMA accessible memory for replies */
 733         if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply,
 734             BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) {
 735                 mpt_prt(mpt, "cannot allocate %lu bytes of reply memory\n",
 736                     (u_long) (2 * PAGE_SIZE));
 737                 return (1);
 738         }
 739
 740         mi.mpt = mpt;
 741         mi.error = 0;
 742
 743         /* Load and lock it into "bus space" */
 744         bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply,
 745             2 * PAGE_SIZE, mpt_map_rquest, &mi, 0);
 746
 747         if (mi.error) {
 748                 mpt_prt(mpt, "error %d loading dma map for DMA reply queue\n",
 749                     mi.error);
 750                 return (1);
 751         }
 752         mpt->reply_phys = mi.phys;
 753
 754         return (0);
 755 }
 756
 757 /* Deallocate memory that was allocated by mpt_dma_mem_alloc
 758  */
 759 static void
 760 mpt_dma_mem_free(struct mpt_softc *mpt)
 761 {
 762
 763         /* Make sure we aren't double destroying */
 764         if (mpt->reply_dmat == NULL) {
 765                 mpt_lprt(mpt, MPT_PRT_DEBUG, "already released dma memory\n");
 766                 return;
 767         }
 768
 769         bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap);
 770         bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap);
 771         bus_dma_tag_destroy(mpt->reply_dmat);
 772         bus_dma_tag_destroy(mpt->parent_dmat);
 773         mpt->reply_dmat = NULL;
 774         kfree(mpt->request_pool, M_DEVBUF);
 775         mpt->request_pool = NULL;
 776 }
 777
 778 #if 0
 779 /* Reads modifiable (via PCI transactions) config registers */
 780 static void
 781 mpt_read_config_regs(struct mpt_softc *mpt)
 782 {
 783
 784         mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2);
 785         mpt->pci_cfg.LatencyTimer_LineSize =
 786             pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2);
 787         mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_BAR(0), 4);
 788         mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(1), 4);
 789         mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(2), 4);
 790         mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_BAR(3), 4);
 791         mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_BAR(4), 4);
 792         mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4);
 793         mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1);
 794         mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4);
 795 }
 796
 797 /* Sets modifiable config registers */
 798 static void
 799 mpt_set_config_regs(struct mpt_softc *mpt)
 800 {
 801         uint32_t val;
 802
 803 #define MPT_CHECK(reg, offset, size)                                    \
 804         val = pci_read_config(mpt->dev, offset, size);                  \
 805         if (mpt->pci_cfg.reg != val) {                                  \
 806                 mpt_prt(mpt,                                            \
 807                     "Restoring " #reg " to 0x%X from 0x%X\n",           \
 808                     mpt->pci_cfg.reg, val);                             \
 809         }
 810
 811         if (mpt->verbose >= MPT_PRT_DEBUG) {
 812                 MPT_CHECK(Command, PCIR_COMMAND, 2);
 813                 MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2);
 814                 MPT_CHECK(IO_BAR, PCIR_BAR(0), 4);
 815                 MPT_CHECK(Mem0_BAR[0], PCIR_BAR(1), 4);
 816                 MPT_CHECK(Mem0_BAR[1], PCIR_BAR(2), 4);
 817                 MPT_CHECK(Mem1_BAR[0], PCIR_BAR(3), 4);
 818                 MPT_CHECK(Mem1_BAR[1], PCIR_BAR(4), 4);
 819                 MPT_CHECK(ROM_BAR, PCIR_BIOS, 4);
 820                 MPT_CHECK(IntLine, PCIR_INTLINE, 1);
 821                 MPT_CHECK(PMCSR, 0x44, 4);
 822         }
 823 #undef MPT_CHECK
 824
 825         pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2);
 826         pci_write_config(mpt->dev, PCIR_CACHELNSZ,
 827             mpt->pci_cfg.LatencyTimer_LineSize, 2);
 828         pci_write_config(mpt->dev, PCIR_BAR(0), mpt->pci_cfg.IO_BAR, 4);
 829         pci_write_config(mpt->dev, PCIR_BAR(1), mpt->pci_cfg.Mem0_BAR[0], 4);
 830         pci_write_config(mpt->dev, PCIR_BAR(2), mpt->pci_cfg.Mem0_BAR[1], 4);
 831         pci_write_config(mpt->dev, PCIR_BAR(3), mpt->pci_cfg.Mem1_BAR[0], 4);
 832         pci_write_config(mpt->dev, PCIR_BAR(4), mpt->pci_cfg.Mem1_BAR[1], 4);
 833         pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4);
 834         pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1);
 835         pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4);
 836 }
 837 #endif
 838
 839 static void
 840 mpt_pci_intr(void *arg)
 841 {
 842         struct mpt_softc *mpt;
 843
 844         mpt = (struct mpt_softc *)arg;
 845         MPT_LOCK(mpt);
 846         mpt_intr(mpt);
 847         MPT_UNLOCK(mpt);
 848 }