sys/dev/aac/aac_pci.c

   1 /*-
   2  * Copyright (c) 2000 Michael Smith
   3  * Copyright (c) 2001 Scott Long
   4  * Copyright (c) 2000 BSDi
   5  * Copyright (c) 2001 Adaptec, Inc.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 /*
  34  * PCI bus interface and resource allocation.
  35  */
  36
  37 #include "opt_aac.h"
  38
  39 #include <sys/param.h>
  40 #include <sys/systm.h>
  41 #include <sys/kernel.h>
  42 #include <sys/module.h>
  43
  44 #include <sys/bio.h>
  45 #include <sys/bus.h>
  46 #include <sys/conf.h>
  47 #include <sys/disk.h>
  48
  49 #include <machine/bus.h>
  50 #include <machine/resource.h>
  51 #include <sys/rman.h>
  52
  53 #include <dev/pci/pcireg.h>
  54 #include <dev/pci/pcivar.h>
  55
  56 #include <dev/aac/aacreg.h>
  57 #include <sys/aac_ioctl.h>
  58 #include <dev/aac/aacvar.h>
  59
  60 static int      aac_pci_probe(device_t dev);
  61 static int      aac_pci_attach(device_t dev);
  62
  63 static int aac_enable_msi = 1;
  64 TUNABLE_INT("hw.aac.enable_msi", &aac_enable_msi);
  65 SYSCTL_INT(_hw_aac, OID_AUTO, enable_msi, CTLFLAG_RDTUN, &aac_enable_msi, 0,
  66     "Enable MSI interrupts");
  67
  68 static device_method_t aac_methods[] = {
  69         /* Device interface */
  70         DEVMETHOD(device_probe,         aac_pci_probe),
  71         DEVMETHOD(device_attach,        aac_pci_attach),
  72         DEVMETHOD(device_detach,        aac_detach),
  73         DEVMETHOD(device_suspend,       aac_suspend),
  74         DEVMETHOD(device_resume,        aac_resume),
  75
  76         DEVMETHOD_END
  77 };
  78
  79 static driver_t aac_pci_driver = {
  80         "aac",
  81         aac_methods,
  82         sizeof(struct aac_softc)
  83 };
  84
  85 static devclass_t       aac_devclass;
  86
  87 DRIVER_MODULE(aac, pci, aac_pci_driver, aac_devclass, NULL, NULL);
  88 MODULE_DEPEND(aac, pci, 1, 1, 1);
  89
  90 static const struct aac_ident
  91 {
  92         u_int16_t               vendor;
  93         u_int16_t               device;
  94         u_int16_t               subvendor;
  95         u_int16_t               subdevice;
  96         int                     hwif;
  97         int                     quirks;
  98         const char              *desc;
  99 } aac_identifiers[] = {
 100         {0x1028, 0x0001, 0x1028, 0x0001, AAC_HWIF_I960RX, 0,
 101         "Dell PERC 2/Si"},
 102         {0x1028, 0x0002, 0x1028, 0x0002, AAC_HWIF_I960RX, 0,
 103         "Dell PERC 3/Di"},
 104         {0x1028, 0x0003, 0x1028, 0x0003, AAC_HWIF_I960RX, 0,
 105         "Dell PERC 3/Si"},
 106         {0x1028, 0x0004, 0x1028, 0x00d0, AAC_HWIF_I960RX, 0,
 107         "Dell PERC 3/Si"},
 108         {0x1028, 0x0002, 0x1028, 0x00d1, AAC_HWIF_I960RX, 0,
 109         "Dell PERC 3/Di"},
 110         {0x1028, 0x0002, 0x1028, 0x00d9, AAC_HWIF_I960RX, 0,
 111         "Dell PERC 3/Di"},
 112         {0x1028, 0x000a, 0x1028, 0x0106, AAC_HWIF_I960RX, 0,
 113         "Dell PERC 3/Di"},
 114         {0x1028, 0x000a, 0x1028, 0x011b, AAC_HWIF_I960RX, 0,
 115         "Dell PERC 3/Di"},
 116         {0x1028, 0x000a, 0x1028, 0x0121, AAC_HWIF_I960RX, 0,
 117         "Dell PERC 3/Di"},
 118         {0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, 0,
 119         "Adaptec AAC-364"},
 120         {0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM,
 121          AAC_FLAGS_BROKEN_MEMMAP, "Adaptec SCSI RAID 5400S"},
 122         {0x1011, 0x0046, 0x9005, 0x1364, AAC_HWIF_STRONGARM, AAC_FLAGS_PERC2QC,
 123          "Dell PERC 2/QC"},
 124         {0x1011, 0x0046, 0x103c, 0x10c2, AAC_HWIF_STRONGARM, 0,
 125          "HP NetRaid-4M"},
 126         {0x9005, 0x0285, 0x9005, 0x0285, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 127          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
 128         {0x9005, 0x0285, 0x1028, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 129          AAC_FLAGS_256FIBS, "Dell PERC 320/DC"},
 130         {0x9005, 0x0285, 0x9005, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 131          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2120S"},
 132         {0x9005, 0x0285, 0x9005, 0x0290, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 133          "Adaptec SATA RAID 2410SA"},
 134         {0x9005, 0x0285, 0x1028, 0x0291, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 135          "Dell CERC SATA RAID 2"},
 136         {0x9005, 0x0285, 0x9005, 0x0292, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 137          "Adaptec SATA RAID 2810SA"},
 138         {0x9005, 0x0285, 0x9005, 0x0293, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 139          "Adaptec SATA RAID 21610SA"},
 140         {0x9005, 0x0285, 0x103c, 0x3227, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 141          "HP ML110 G2 (Adaptec 2610SA)"},
 142         {0x9005, 0x0286, 0x9005, 0x028c, AAC_HWIF_RKT, AAC_FLAGS_NOMSI,
 143          "Adaptec SCSI RAID 2230S"},
 144         {0x9005, 0x0286, 0x9005, 0x028d, AAC_HWIF_RKT, 0,
 145          "Adaptec SCSI RAID 2130S"},
 146         {0x9005, 0x0285, 0x9005, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 147          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
 148         {0x9005, 0x0285, 0x17aa, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 149          AAC_FLAGS_256FIBS, "Legend S220"},
 150         {0x9005, 0x0285, 0x17aa, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 151          AAC_FLAGS_256FIBS, "Legend S230"},
 152         {0x9005, 0x0285, 0x9005, 0x0288, AAC_HWIF_I960RX, 0,
 153          "Adaptec SCSI RAID 3230S"},
 154         {0x9005, 0x0285, 0x9005, 0x0289, AAC_HWIF_I960RX, 0,
 155          "Adaptec SCSI RAID 3240S"},
 156         {0x9005, 0x0285, 0x9005, 0x028a, AAC_HWIF_I960RX, 0,
 157          "Adaptec SCSI RAID 2020ZCR"},
 158         {0x9005, 0x0285, 0x9005, 0x028b, AAC_HWIF_I960RX, 0,
 159          "Adaptec SCSI RAID 2025ZCR"},
 160         {0x9005, 0x0286, 0x9005, 0x029b, AAC_HWIF_RKT, AAC_FLAGS_NOMSI,
 161          "Adaptec SATA RAID 2820SA"},
 162         {0x9005, 0x0286, 0x9005, 0x029c, AAC_HWIF_RKT, 0,
 163          "Adaptec SATA RAID 2620SA"},
 164         {0x9005, 0x0286, 0x9005, 0x029d, AAC_HWIF_RKT, 0,
 165          "Adaptec SATA RAID 2420SA"},
 166         {0x9005, 0x0286, 0x9005, 0x029e, AAC_HWIF_RKT, 0,
 167          "ICP ICP9024RO SCSI RAID"},
 168         {0x9005, 0x0286, 0x9005, 0x029f, AAC_HWIF_RKT, 0,
 169          "ICP ICP9014RO SCSI RAID"},
 170         {0x9005, 0x0285, 0x9005, 0x0294, AAC_HWIF_I960RX, 0,
 171          "Adaptec SATA RAID 2026ZCR"},
 172         {0x9005, 0x0285, 0x9005, 0x0296, AAC_HWIF_I960RX, 0,
 173          "Adaptec SCSI RAID 2240S"},
 174         {0x9005, 0x0285, 0x9005, 0x0297, AAC_HWIF_I960RX, 0,
 175          "Adaptec SAS RAID 4005SAS"},
 176         {0x9005, 0x0285, 0x1014, 0x02f2, AAC_HWIF_I960RX, 0,
 177          "IBM ServeRAID 8i"},
 178         {0x9005, 0x0285, 0x1014, 0x0312, AAC_HWIF_I960RX, 0,
 179          "IBM ServeRAID 8i"},
 180         {0x9005, 0x0285, 0x9005, 0x0298, AAC_HWIF_I960RX, 0,
 181          "Adaptec RAID 4000"},
 182         {0x9005, 0x0285, 0x9005, 0x0299, AAC_HWIF_I960RX, 0,
 183          "Adaptec SAS RAID 4800SAS"},
 184         {0x9005, 0x0285, 0x9005, 0x029a, AAC_HWIF_I960RX, 0,
 185          "Adaptec SAS RAID 4805SAS"},
 186         {0x9005, 0x0285, 0x9005, 0x028e, AAC_HWIF_I960RX, 0,
 187          "Adaptec SATA RAID 2020SA ZCR"},
 188         {0x9005, 0x0285, 0x9005, 0x028f, AAC_HWIF_I960RX, 0,
 189          "Adaptec SATA RAID 2025SA ZCR"},
 190         {0x9005, 0x0285, 0x9005, 0x02a4, AAC_HWIF_I960RX, 0,
 191          "ICP ICP9085LI SAS RAID"},
 192         {0x9005, 0x0285, 0x9005, 0x02a5, AAC_HWIF_I960RX, 0,
 193          "ICP ICP5085BR SAS RAID"},
 194         {0x9005, 0x0286, 0x9005, 0x02a0, AAC_HWIF_RKT, 0,
 195          "ICP ICP9047MA SATA RAID"},
 196         {0x9005, 0x0286, 0x9005, 0x02a1, AAC_HWIF_RKT, 0,
 197          "ICP ICP9087MA SATA RAID"},
 198         {0x9005, 0x0286, 0x9005, 0x02a6, AAC_HWIF_RKT, 0,
 199          "ICP9067MA SATA RAID"},
 200         {0x9005, 0x0285, 0x9005, 0x02b5, AAC_HWIF_I960RX, 0,
 201          "Adaptec RAID 5445"},
 202         {0x9005, 0x0285, 0x9005, 0x02b6, AAC_HWIF_I960RX, 0,
 203          "Adaptec RAID 5805"},
 204         {0x9005, 0x0285, 0x9005, 0x02b7, AAC_HWIF_I960RX, 0,
 205          "Adaptec RAID 5085"},
 206         {0x9005, 0x0285, 0x9005, 0x02b8, AAC_HWIF_I960RX, 0,
 207          "ICP RAID ICP5445SL"},
 208         {0x9005, 0x0285, 0x9005, 0x02b9, AAC_HWIF_I960RX, 0,
 209          "ICP RAID ICP5085SL"},
 210         {0x9005, 0x0285, 0x9005, 0x02ba, AAC_HWIF_I960RX, 0,
 211          "ICP RAID ICP5805SL"},
 212         {0x9005, 0x0285, 0x9005, 0x02bb, AAC_HWIF_I960RX, 0,
 213          "Adaptec RAID 3405"},
 214         {0x9005, 0x0285, 0x9005, 0x02bc, AAC_HWIF_I960RX, 0,
 215          "Adaptec RAID 3805"},
 216         {0x9005, 0x0285, 0x9005, 0x02bd, AAC_HWIF_I960RX, 0,
 217          "Adaptec RAID 31205"},
 218         {0x9005, 0x0285, 0x9005, 0x02be, AAC_HWIF_I960RX, 0,
 219          "Adaptec RAID 31605"},
 220         {0x9005, 0x0285, 0x9005, 0x02bf, AAC_HWIF_I960RX, 0,
 221          "ICP RAID ICP5045BL"},
 222         {0x9005, 0x0285, 0x9005, 0x02c0, AAC_HWIF_I960RX, 0,
 223          "ICP RAID ICP5085BL"},
 224         {0x9005, 0x0285, 0x9005, 0x02c1, AAC_HWIF_I960RX, 0,
 225          "ICP RAID ICP5125BR"},
 226         {0x9005, 0x0285, 0x9005, 0x02c2, AAC_HWIF_I960RX, 0,
 227          "ICP RAID ICP5165BR"},
 228         {0x9005, 0x0285, 0x9005, 0x02c3, AAC_HWIF_I960RX, 0,
 229          "Adaptec RAID 51205"},
 230         {0x9005, 0x0285, 0x9005, 0x02c4, AAC_HWIF_I960RX, 0,
 231          "Adaptec RAID 51605"},
 232         {0x9005, 0x0285, 0x9005, 0x02c5, AAC_HWIF_I960RX, 0,
 233          "ICP RAID ICP5125SL"},
 234         {0x9005, 0x0285, 0x9005, 0x02c6, AAC_HWIF_I960RX, 0,
 235          "ICP RAID ICP5165SL"},
 236         {0x9005, 0x0285, 0x9005, 0x02c7, AAC_HWIF_I960RX, 0,
 237          "Adaptec RAID 3085"},
 238         {0x9005, 0x0285, 0x9005, 0x02c8, AAC_HWIF_I960RX, 0,
 239          "ICP RAID ICP5805BL"},
 240         {0x9005, 0x0285, 0x9005, 0x02ce, AAC_HWIF_I960RX, 0,
 241          "Adaptec RAID 51245"},
 242         {0x9005, 0x0285, 0x9005, 0x02cf, AAC_HWIF_I960RX, 0,
 243          "Adaptec RAID 51645"},
 244         {0x9005, 0x0285, 0x9005, 0x02d0, AAC_HWIF_I960RX, 0,
 245          "Adaptec RAID 52445"},
 246         {0x9005, 0x0285, 0x9005, 0x02d1, AAC_HWIF_I960RX, 0,
 247          "Adaptec RAID 5405"},
 248         {0x9005, 0x0285, 0x9005, 0x02d4, AAC_HWIF_I960RX, 0,
 249          "Adaptec RAID 2045"},
 250         {0x9005, 0x0285, 0x9005, 0x02d5, AAC_HWIF_I960RX, 0,
 251          "Adaptec RAID 2405"},
 252         {0x9005, 0x0285, 0x9005, 0x02d6, AAC_HWIF_I960RX, 0,
 253          "Adaptec RAID 2445"},
 254         {0x9005, 0x0285, 0x9005, 0x02d7, AAC_HWIF_I960RX, 0,
 255          "Adaptec RAID 2805"},
 256         {0x9005, 0x0286, 0x1014, 0x9580, AAC_HWIF_RKT, 0,
 257          "IBM ServeRAID-8k"},
 258         {0x9005, 0x0285, 0x1014, 0x034d, AAC_HWIF_I960RX, 0,
 259          "IBM ServeRAID 8s"},
 260         {0x9005, 0x0285, 0x108e, 0x7aac, AAC_HWIF_I960RX, 0,
 261          "Sun STK RAID REM"},
 262         {0x9005, 0x0285, 0x108e, 0x7aae, AAC_HWIF_I960RX, 0,
 263          "Sun STK RAID EM"},
 264         {0x9005, 0x0285, 0x108e, 0x286, AAC_HWIF_I960RX, 0,
 265          "SG-XPCIESAS-R-IN"},
 266         {0x9005, 0x0285, 0x108e, 0x287, AAC_HWIF_I960RX, 0,
 267          "SG-XPCIESAS-R-EX"},
 268         {0x9005, 0x0285, 0x15d9, 0x2b5, AAC_HWIF_I960RX, 0,
 269          "AOC-USAS-S4i"},
 270         {0x9005, 0x0285, 0x15d9, 0x2b6, AAC_HWIF_I960RX, 0,
 271          "AOC-USAS-S8i"},
 272         {0x9005, 0x0285, 0x15d9, 0x2c9, AAC_HWIF_I960RX, 0,
 273          "AOC-USAS-S4iR"},
 274         {0x9005, 0x0285, 0x15d9, 0x2ca, AAC_HWIF_I960RX, 0,
 275          "AOC-USAS-S8iR"},
 276         {0x9005, 0x0285, 0x15d9, 0x2d2, AAC_HWIF_I960RX, 0,
 277          "AOC-USAS-S8i-LP"},
 278         {0x9005, 0x0285, 0x15d9, 0x2d3, AAC_HWIF_I960RX, 0,
 279          "AOC-USAS-S8iR-LP"},
 280         {0, 0, 0, 0, 0, 0, 0}
 281 };
 282
 283 static const struct aac_ident
 284 aac_family_identifiers[] = {
 285         {0x9005, 0x0285, 0, 0, AAC_HWIF_I960RX, 0,
 286          "Adaptec RAID Controller"},
 287         {0x9005, 0x0286, 0, 0, AAC_HWIF_RKT, 0,
 288          "Adaptec RAID Controller"},
 289         {0, 0, 0, 0, 0, 0, 0}
 290 };
 291
 292 static const struct aac_ident *
 293 aac_find_ident(device_t dev)
 294 {
 295         const struct aac_ident *m;
 296         u_int16_t vendid, devid, sub_vendid, sub_devid;
 297
 298         vendid = pci_get_vendor(dev);
 299         devid = pci_get_device(dev);
 300         sub_vendid = pci_get_subvendor(dev);
 301         sub_devid = pci_get_subdevice(dev);
 302
 303         for (m = aac_identifiers; m->vendor != 0; m++) {
 304                 if ((m->vendor == vendid) && (m->device == devid) &&
 305                     (m->subvendor == sub_vendid) &&
 306                     (m->subdevice == sub_devid))
 307                         return (m);
 308         }
 309
 310         for (m = aac_family_identifiers; m->vendor != 0; m++) {
 311                 if ((m->vendor == vendid) && (m->device == devid))
 312                         return (m);
 313         }
 314         return (NULL);
 315 }
 316
 317 /*
 318  * Determine whether this is one of our supported adapters.
 319  */
 320 static int
 321 aac_pci_probe(device_t dev)
 322 {
 323         const struct aac_ident *id;
 324
 325         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 326
 327         if ((id = aac_find_ident(dev)) != NULL) {
 328                 device_set_desc(dev, id->desc);
 329                 return(BUS_PROBE_DEFAULT);
 330         }
 331         return(ENXIO);
 332 }
 333
 334 /*
 335  * Allocate resources for our device, set up the bus interface.
 336  */
 337 static int
 338 aac_pci_attach(device_t dev)
 339 {
 340         struct aac_softc *sc;
 341         const struct aac_ident *id;
 342         int count, error, rid;
 343
 344         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 345
 346         /*
 347          * Initialise softc.
 348          */
 349         sc = device_get_softc(dev);
 350         sc->aac_dev = dev;
 351
 352         /* assume failure is 'not configured' */
 353         error = ENXIO;
 354
 355         /*
 356          * Verify that the adapter is correctly set up in PCI space.
 357          */
 358         pci_enable_busmaster(dev);
 359         if (!(pci_read_config(dev, PCIR_COMMAND, 2) & PCIM_CMD_BUSMASTEREN)) {
 360                 device_printf(dev, "can't enable bus-master feature\n");
 361                 goto out;
 362         }
 363
 364         /*
 365          * Detect the hardware interface version, set up the bus interface
 366          * indirection.
 367          */
 368         id = aac_find_ident(dev);
 369         sc->aac_hwif = id->hwif;
 370         switch(sc->aac_hwif) {
 371         case AAC_HWIF_I960RX:
 372         case AAC_HWIF_NARK:
 373                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 374                     "set hardware up for i960Rx/NARK");
 375                 sc->aac_if = &aac_rx_interface;
 376                 break;
 377         case AAC_HWIF_STRONGARM:
 378                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 379                     "set hardware up for StrongARM");
 380                 sc->aac_if = &aac_sa_interface;
 381                 break;
 382         case AAC_HWIF_RKT:
 383                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 384                     "set hardware up for Rocket/MIPS");
 385                 sc->aac_if = &aac_rkt_interface;
 386                 break;
 387         default:
 388                 sc->aac_hwif = AAC_HWIF_UNKNOWN;
 389                 device_printf(dev, "unknown hardware type\n");
 390                 goto out;
 391         }
 392
 393         /* Set up quirks */
 394         sc->flags = id->quirks;
 395
 396         /*
 397          * Allocate the PCI register window(s).
 398          */
 399         rid = PCIR_BAR(0);
 400         if ((sc->aac_regs_res0 = bus_alloc_resource_any(dev,
 401             SYS_RES_MEMORY, &rid, RF_ACTIVE)) == NULL) {
 402                 device_printf(dev, "can't allocate register window 0\n");
 403                 goto out;
 404         }
 405         sc->aac_btag0 = rman_get_bustag(sc->aac_regs_res0);
 406         sc->aac_bhandle0 = rman_get_bushandle(sc->aac_regs_res0);
 407
 408         if (sc->aac_hwif == AAC_HWIF_NARK) {
 409                 rid = PCIR_BAR(1);
 410                 if ((sc->aac_regs_res1 = bus_alloc_resource_any(dev,
 411                     SYS_RES_MEMORY, &rid, RF_ACTIVE)) == NULL) {
 412                         device_printf(dev,
 413                             "can't allocate register window 1\n");
 414                         goto out;
 415                 }
 416                 sc->aac_btag1 = rman_get_bustag(sc->aac_regs_res1);
 417                 sc->aac_bhandle1 = rman_get_bushandle(sc->aac_regs_res1);
 418         } else {
 419                 sc->aac_regs_res1 = sc->aac_regs_res0;
 420                 sc->aac_btag1 = sc->aac_btag0;
 421                 sc->aac_bhandle1 = sc->aac_bhandle0;
 422         }
 423
 424         /*
 425          * Allocate the interrupt.
 426          */
 427         rid = 0;
 428         if (aac_enable_msi != 0 && (sc->flags & AAC_FLAGS_NOMSI) == 0) {
 429                 count = 1;
 430                 if (pci_alloc_msi(dev, &count) == 0)
 431                         rid = 1;
 432         }
 433         if ((sc->aac_irq = bus_alloc_resource_any(sc->aac_dev, SYS_RES_IRQ,
 434             &rid, RF_ACTIVE | (rid != 0 ? 0 : RF_SHAREABLE))) == NULL) {
 435                 device_printf(dev, "can't allocate interrupt\n");
 436                 goto out;
 437         }
 438
 439         /*
 440          * Allocate the parent bus DMA tag appropriate for our PCI interface.
 441          *
 442          * Note that some of these controllers are 64-bit capable.
 443          */
 444         if (bus_dma_tag_create(bus_get_dma_tag(dev),    /* parent */
 445                                PAGE_SIZE, 0,            /* algnmnt, boundary */
 446                                BUS_SPACE_MAXADDR,       /* lowaddr */
 447                                BUS_SPACE_MAXADDR,       /* highaddr */
 448                                NULL, NULL,              /* filter, filterarg */
 449                                BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
 450                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
 451                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
 452                                0,                       /* flags */
 453                                NULL, NULL,              /* No locking needed */
 454                                &sc->aac_parent_dmat)) {
 455                 device_printf(dev, "can't allocate parent DMA tag\n");
 456                 goto out;
 457         }
 458
 459         /*
 460          * Do bus-independent initialisation.
 461          */
 462         error = aac_attach(sc);
 463
 464 out:
 465         if (error)
 466                 aac_free(sc);
 467         return(error);
 468 }
 469
 470 /*
 471  * Do nothing driver that will attach to the SCSI channels of a Dell PERC
 472  * controller.  This is needed to keep the power management subsystem from
 473  * trying to power down these devices.
 474  */
 475 static int aacch_probe(device_t dev);
 476 static int aacch_attach(device_t dev);
 477 static int aacch_detach(device_t dev);
 478
 479 static device_method_t aacch_methods[] = {
 480         /* Device interface */
 481         DEVMETHOD(device_probe,         aacch_probe),
 482         DEVMETHOD(device_attach,        aacch_attach),
 483         DEVMETHOD(device_detach,        aacch_detach),
 484         DEVMETHOD_END
 485 };
 486
 487 static driver_t aacch_driver = {
 488         "aacch",
 489         aacch_methods,
 490         1       /* no softc */
 491 };
 492
 493 static devclass_t       aacch_devclass;
 494 DRIVER_MODULE(aacch, pci, aacch_driver, aacch_devclass, NULL, NULL);
 495
 496 static int
 497 aacch_probe(device_t dev)
 498 {
 499
 500         if ((pci_get_vendor(dev) != 0x9005) ||
 501             (pci_get_device(dev) != 0x00c5))
 502                 return (ENXIO);
 503
 504         device_set_desc(dev, "AAC RAID Channel");
 505         return (-10);
 506 }
 507
 508 static int
 509 aacch_attach(device_t dev __unused)
 510 {
 511
 512         return (0);
 513 }
 514
 515 static int
 516 aacch_detach(device_t dev __unused)
 517 {
 518
 519         return (0);
 520 }