sys/dev/raid/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  * $FreeBSD: head/sys/dev/aac/aac_pci.c 254005 2013-08-06 19:14:02Z marius $
  30  */
  31
  32 /*
  33  * PCI bus interface and resource allocation.
  34  */
  35
  36 #include "opt_aac.h"
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/kernel.h>
  41 #include <sys/module.h>
  42
  43 #include <sys/bio.h>
  44 #include <sys/bus.h>
  45 #include <sys/conf.h>
  46 #include <sys/disk.h>
  47
  48 #include <sys/rman.h>
  49
  50 #include <bus/pci/pcireg.h>
  51 #include <bus/pci/pcivar.h>
  52
  53 #include <dev/raid/aac/aacreg.h>
  54 #include <dev/raid/aac/aac_ioctl.h>
  55 #include <dev/raid/aac/aacvar.h>
  56
  57 static int      aac_pci_probe(device_t dev);
  58 static int      aac_pci_attach(device_t dev);
  59
  60 static int aac_msi_enable = 1;
  61 TUNABLE_INT("hw.mfi.msi.enable", &aac_msi_enable);
  62
  63 static device_method_t aac_methods[] = {
  64         /* Device interface */
  65         DEVMETHOD(device_probe,         aac_pci_probe),
  66         DEVMETHOD(device_attach,        aac_pci_attach),
  67         DEVMETHOD(device_detach,        aac_detach),
  68         DEVMETHOD(device_suspend,       aac_suspend),
  69         DEVMETHOD(device_resume,        aac_resume),
  70
  71         DEVMETHOD_END
  72 };
  73
  74 static driver_t aac_pci_driver = {
  75         "aac",
  76         aac_methods,
  77         sizeof(struct aac_softc)
  78 };
  79
  80 static devclass_t       aac_devclass;
  81
  82 DRIVER_MODULE(aac, pci, aac_pci_driver, aac_devclass, NULL, NULL);
  83 MODULE_DEPEND(aac, pci, 1, 1, 1);
  84
  85
  86 static const struct aac_ident
  87 {
  88         u_int16_t               vendor;
  89         u_int16_t               device;
  90         u_int16_t               subvendor;
  91         u_int16_t               subdevice;
  92         int                     hwif;
  93         int                     quirks;
  94         const char              *desc;
  95 } aac_identifiers[] = {
  96         {0x1028, 0x0001, 0x1028, 0x0001, AAC_HWIF_I960RX, 0,
  97         "Dell PERC 2/Si"},
  98         {0x1028, 0x0002, 0x1028, 0x0002, AAC_HWIF_I960RX, 0,
  99         "Dell PERC 3/Di"},
 100         {0x1028, 0x0003, 0x1028, 0x0003, AAC_HWIF_I960RX, 0,
 101         "Dell PERC 3/Si"},
 102         {0x1028, 0x0004, 0x1028, 0x00d0, AAC_HWIF_I960RX, 0,
 103         "Dell PERC 3/Si"},
 104         {0x1028, 0x0002, 0x1028, 0x00d1, AAC_HWIF_I960RX, 0,
 105         "Dell PERC 3/Di"},
 106         {0x1028, 0x0002, 0x1028, 0x00d9, AAC_HWIF_I960RX, 0,
 107         "Dell PERC 3/Di"},
 108         {0x1028, 0x000a, 0x1028, 0x0106, AAC_HWIF_I960RX, 0,
 109         "Dell PERC 3/Di"},
 110         {0x1028, 0x000a, 0x1028, 0x011b, AAC_HWIF_I960RX, 0,
 111         "Dell PERC 3/Di"},
 112         {0x1028, 0x000a, 0x1028, 0x0121, AAC_HWIF_I960RX, 0,
 113         "Dell PERC 3/Di"},
 114         {0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, 0,
 115         "Adaptec AAC-364"},
 116         {0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM,
 117          AAC_FLAGS_BROKEN_MEMMAP, "Adaptec SCSI RAID 5400S"},
 118         {0x1011, 0x0046, 0x9005, 0x1364, AAC_HWIF_STRONGARM, AAC_FLAGS_PERC2QC,
 119          "Dell PERC 2/QC"},
 120         {0x1011, 0x0046, 0x103c, 0x10c2, AAC_HWIF_STRONGARM, 0,
 121          "HP NetRaid-4M"},
 122         {0x9005, 0x0285, 0x9005, 0x0285, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 123          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
 124         {0x9005, 0x0285, 0x1028, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 125          AAC_FLAGS_256FIBS, "Dell PERC 320/DC"},
 126         {0x9005, 0x0285, 0x9005, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 127          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2120S"},
 128         {0x9005, 0x0285, 0x9005, 0x0290, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 129          "Adaptec SATA RAID 2410SA"},
 130         {0x9005, 0x0285, 0x1028, 0x0291, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 131          "Dell CERC SATA RAID 2"},
 132         {0x9005, 0x0285, 0x9005, 0x0292, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 133          "Adaptec SATA RAID 2810SA"},
 134         {0x9005, 0x0285, 0x9005, 0x0293, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 135          "Adaptec SATA RAID 21610SA"},
 136         {0x9005, 0x0285, 0x103c, 0x3227, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 137          "HP ML110 G2 (Adaptec 2610SA)"},
 138         {0x9005, 0x0286, 0x9005, 0x028c, AAC_HWIF_RKT, AAC_FLAGS_NOMSI,
 139          "Adaptec SCSI RAID 2230S"},
 140         {0x9005, 0x0286, 0x9005, 0x028d, AAC_HWIF_RKT, 0,
 141          "Adaptec SCSI RAID 2130S"},
 142         {0x9005, 0x0285, 0x9005, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 143          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
 144         {0x9005, 0x0285, 0x17aa, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 145          AAC_FLAGS_256FIBS, "Legend S220"},
 146         {0x9005, 0x0285, 0x17aa, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 147          AAC_FLAGS_256FIBS, "Legend S230"},
 148         {0x9005, 0x0285, 0x9005, 0x0288, AAC_HWIF_I960RX, 0,
 149          "Adaptec SCSI RAID 3230S"},
 150         {0x9005, 0x0285, 0x9005, 0x0289, AAC_HWIF_I960RX, 0,
 151          "Adaptec SCSI RAID 3240S"},
 152         {0x9005, 0x0285, 0x9005, 0x028a, AAC_HWIF_I960RX, 0,
 153          "Adaptec SCSI RAID 2020ZCR"},
 154         {0x9005, 0x0285, 0x9005, 0x028b, AAC_HWIF_I960RX, 0,
 155          "Adaptec SCSI RAID 2025ZCR"},
 156         {0x9005, 0x0286, 0x9005, 0x029b, AAC_HWIF_RKT, AAC_FLAGS_NOMSI,
 157          "Adaptec SATA RAID 2820SA"},
 158         {0x9005, 0x0286, 0x9005, 0x029c, AAC_HWIF_RKT, 0,
 159          "Adaptec SATA RAID 2620SA"},
 160         {0x9005, 0x0286, 0x9005, 0x029d, AAC_HWIF_RKT, 0,
 161          "Adaptec SATA RAID 2420SA"},
 162         {0x9005, 0x0286, 0x9005, 0x029e, AAC_HWIF_RKT, 0,
 163          "ICP ICP9024RO SCSI RAID"},
 164         {0x9005, 0x0286, 0x9005, 0x029f, AAC_HWIF_RKT, 0,
 165          "ICP ICP9014RO SCSI RAID"},
 166         {0x9005, 0x0285, 0x9005, 0x0294, AAC_HWIF_I960RX, 0,
 167          "Adaptec SATA RAID 2026ZCR"},
 168         {0x9005, 0x0285, 0x9005, 0x0296, AAC_HWIF_I960RX, 0,
 169          "Adaptec SCSI RAID 2240S"},
 170         {0x9005, 0x0285, 0x9005, 0x0297, AAC_HWIF_I960RX, 0,
 171          "Adaptec SAS RAID 4005SAS"},
 172         {0x9005, 0x0285, 0x1014, 0x02f2, AAC_HWIF_I960RX, 0,
 173          "IBM ServeRAID 8i"},
 174         {0x9005, 0x0285, 0x1014, 0x0312, AAC_HWIF_I960RX, 0,
 175          "IBM ServeRAID 8i"},
 176         {0x9005, 0x0285, 0x9005, 0x0298, AAC_HWIF_I960RX, 0,
 177          "Adaptec RAID 4000"},
 178         {0x9005, 0x0285, 0x9005, 0x0299, AAC_HWIF_I960RX, 0,
 179          "Adaptec SAS RAID 4800SAS"},
 180         {0x9005, 0x0285, 0x9005, 0x029a, AAC_HWIF_I960RX, 0,
 181          "Adaptec SAS RAID 4805SAS"},
 182         {0x9005, 0x0285, 0x9005, 0x028e, AAC_HWIF_I960RX, 0,
 183          "Adaptec SATA RAID 2020SA ZCR"},
 184         {0x9005, 0x0285, 0x9005, 0x028f, AAC_HWIF_I960RX, 0,
 185          "Adaptec SATA RAID 2025SA ZCR"},
 186         {0x9005, 0x0285, 0x9005, 0x02a4, AAC_HWIF_I960RX, 0,
 187          "ICP ICP9085LI SAS RAID"},
 188         {0x9005, 0x0285, 0x9005, 0x02a5, AAC_HWIF_I960RX, 0,
 189          "ICP ICP5085BR SAS RAID"},
 190         {0x9005, 0x0286, 0x9005, 0x02a0, AAC_HWIF_RKT, 0,
 191          "ICP ICP9047MA SATA RAID"},
 192         {0x9005, 0x0286, 0x9005, 0x02a1, AAC_HWIF_RKT, 0,
 193          "ICP ICP9087MA SATA RAID"},
 194         {0x9005, 0x0286, 0x9005, 0x02a6, AAC_HWIF_RKT, 0,
 195          "ICP9067MA SATA RAID"},
 196         {0x9005, 0x0285, 0x9005, 0x02b5, AAC_HWIF_I960RX, 0,
 197          "Adaptec RAID 5445"},
 198         {0x9005, 0x0285, 0x9005, 0x02b6, AAC_HWIF_I960RX, 0,
 199          "Adaptec RAID 5805"},
 200         {0x9005, 0x0285, 0x9005, 0x02b7, AAC_HWIF_I960RX, 0,
 201          "Adaptec RAID 5085"},
 202         {0x9005, 0x0285, 0x9005, 0x02b8, AAC_HWIF_I960RX, 0,
 203          "ICP RAID ICP5445SL"},
 204         {0x9005, 0x0285, 0x9005, 0x02b9, AAC_HWIF_I960RX, 0,
 205          "ICP RAID ICP5085SL"},
 206         {0x9005, 0x0285, 0x9005, 0x02ba, AAC_HWIF_I960RX, 0,
 207          "ICP RAID ICP5805SL"},
 208         {0x9005, 0x0285, 0x9005, 0x02bb, AAC_HWIF_I960RX, 0,
 209          "Adaptec RAID 3405"},
 210         {0x9005, 0x0285, 0x9005, 0x02bc, AAC_HWIF_I960RX, 0,
 211          "Adaptec RAID 3805"},
 212         {0x9005, 0x0285, 0x9005, 0x02bd, AAC_HWIF_I960RX, 0,
 213          "Adaptec RAID 31205"},
 214         {0x9005, 0x0285, 0x9005, 0x02be, AAC_HWIF_I960RX, 0,
 215          "Adaptec RAID 31605"},
 216         {0x9005, 0x0285, 0x9005, 0x02bf, AAC_HWIF_I960RX, 0,
 217          "ICP RAID ICP5045BL"},
 218         {0x9005, 0x0285, 0x9005, 0x02c0, AAC_HWIF_I960RX, 0,
 219          "ICP RAID ICP5085BL"},
 220         {0x9005, 0x0285, 0x9005, 0x02c1, AAC_HWIF_I960RX, 0,
 221          "ICP RAID ICP5125BR"},
 222         {0x9005, 0x0285, 0x9005, 0x02c2, AAC_HWIF_I960RX, 0,
 223          "ICP RAID ICP5165BR"},
 224         {0x9005, 0x0285, 0x9005, 0x02c3, AAC_HWIF_I960RX, 0,
 225          "Adaptec RAID 51205"},
 226         {0x9005, 0x0285, 0x9005, 0x02c4, AAC_HWIF_I960RX, 0,
 227          "Adaptec RAID 51605"},
 228         {0x9005, 0x0285, 0x9005, 0x02c5, AAC_HWIF_I960RX, 0,
 229          "ICP RAID ICP5125SL"},
 230         {0x9005, 0x0285, 0x9005, 0x02c6, AAC_HWIF_I960RX, 0,
 231          "ICP RAID ICP5165SL"},
 232         {0x9005, 0x0285, 0x9005, 0x02c7, AAC_HWIF_I960RX, 0,
 233          "Adaptec RAID 3085"},
 234         {0x9005, 0x0285, 0x9005, 0x02c8, AAC_HWIF_I960RX, 0,
 235          "ICP RAID ICP5805BL"},
 236         {0x9005, 0x0285, 0x9005, 0x02ce, AAC_HWIF_I960RX, 0,
 237          "Adaptec RAID 51245"},
 238         {0x9005, 0x0285, 0x9005, 0x02cf, AAC_HWIF_I960RX, 0,
 239          "Adaptec RAID 51645"},
 240         {0x9005, 0x0285, 0x9005, 0x02d0, AAC_HWIF_I960RX, 0,
 241          "Adaptec RAID 52445"},
 242         {0x9005, 0x0285, 0x9005, 0x02d1, AAC_HWIF_I960RX, 0,
 243          "Adaptec RAID 5405"},
 244         {0x9005, 0x0285, 0x9005, 0x02d4, AAC_HWIF_I960RX, 0,
 245          "Adaptec RAID 2045"},
 246         {0x9005, 0x0285, 0x9005, 0x02d5, AAC_HWIF_I960RX, 0,
 247          "Adaptec RAID 2405"},
 248         {0x9005, 0x0285, 0x9005, 0x02d6, AAC_HWIF_I960RX, 0,
 249          "Adaptec RAID 2445"},
 250         {0x9005, 0x0285, 0x9005, 0x02d7, AAC_HWIF_I960RX, 0,
 251          "Adaptec RAID 2805"},
 252         {0x9005, 0x0286, 0x1014, 0x9580, AAC_HWIF_RKT, 0,
 253          "IBM ServeRAID-8k"},
 254         {0x9005, 0x0285, 0x1014, 0x034d, AAC_HWIF_I960RX, 0,
 255          "IBM ServeRAID 8s"},
 256         {0x9005, 0x0285, 0x108e, 0x7aac, AAC_HWIF_I960RX, 0,
 257          "Sun STK RAID REM"},
 258         {0x9005, 0x0285, 0x108e, 0x7aae, AAC_HWIF_I960RX, 0,
 259          "Sun STK RAID EM"},
 260         {0x9005, 0x0285, 0x108e, 0x286, AAC_HWIF_I960RX, 0,
 261          "SG-XPCIESAS-R-IN"},
 262         {0x9005, 0x0285, 0x108e, 0x287, AAC_HWIF_I960RX, 0,
 263          "SG-XPCIESAS-R-EX"},
 264         {0x9005, 0x0285, 0x15d9, 0x2b5, AAC_HWIF_I960RX, 0,
 265          "AOC-USAS-S4i"},
 266         {0x9005, 0x0285, 0x15d9, 0x2b6, AAC_HWIF_I960RX, 0,
 267          "AOC-USAS-S8i"},
 268         {0x9005, 0x0285, 0x15d9, 0x2c9, AAC_HWIF_I960RX, 0,
 269          "AOC-USAS-S4iR"},
 270         {0x9005, 0x0285, 0x15d9, 0x2ca, AAC_HWIF_I960RX, 0,
 271          "AOC-USAS-S8iR"},
 272         {0x9005, 0x0285, 0x15d9, 0x2d2, AAC_HWIF_I960RX, 0,
 273          "AOC-USAS-S8i-LP"},
 274         {0x9005, 0x0285, 0x15d9, 0x2d3, AAC_HWIF_I960RX, 0,
 275          "AOC-USAS-S8iR-LP"},
 276         {0, 0, 0, 0, 0, 0, 0}
 277 };
 278
 279 static const struct aac_ident
 280 aac_family_identifiers[] = {
 281         {0x9005, 0x0285, 0, 0, AAC_HWIF_I960RX, 0,
 282          "Adaptec RAID Controller"},
 283         {0x9005, 0x0286, 0, 0, AAC_HWIF_RKT, 0,
 284          "Adaptec RAID Controller"},
 285         {0, 0, 0, 0, 0, 0, 0}
 286 };
 287
 288 static const struct aac_ident *
 289 aac_find_ident(device_t dev)
 290 {
 291         const struct aac_ident *m;
 292         u_int16_t vendid, devid, sub_vendid, sub_devid;
 293
 294         vendid = pci_get_vendor(dev);
 295         devid = pci_get_device(dev);
 296         sub_vendid = pci_get_subvendor(dev);
 297         sub_devid = pci_get_subdevice(dev);
 298
 299         for (m = aac_identifiers; m->vendor != 0; m++) {
 300                 if ((m->vendor == vendid) && (m->device == devid) &&
 301                     (m->subvendor == sub_vendid) &&
 302                     (m->subdevice == sub_devid))
 303                         return (m);
 304         }
 305
 306         for (m = aac_family_identifiers; m->vendor != 0; m++) {
 307                 if ((m->vendor == vendid) && (m->device == devid))
 308                         return (m);
 309         }
 310         return (NULL);
 311 }
 312
 313 /*
 314  * Determine whether this is one of our supported adapters.
 315  */
 316 static int
 317 aac_pci_probe(device_t dev)
 318 {
 319         const struct aac_ident *id;
 320
 321         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 322
 323         if ((id = aac_find_ident(dev)) != NULL) {
 324                 device_set_desc(dev, id->desc);
 325                 return(BUS_PROBE_DEFAULT);
 326         }
 327         return(ENXIO);
 328 }
 329
 330 /*
 331  * Allocate resources for our device, set up the bus interface.
 332  */
 333 static int
 334 aac_pci_attach(device_t dev)
 335 {
 336         struct aac_softc *sc;
 337         const struct aac_ident *id;
 338         int error, rid;
 339         u_int irq_flags;
 340
 341         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 342
 343         /*
 344          * Initialise softc.
 345          */
 346         sc = device_get_softc(dev);
 347         sc->aac_dev = dev;
 348
 349         /* assume failure is 'not configured' */
 350         error = ENXIO;
 351
 352         /*
 353          * Verify that the adapter is correctly set up in PCI space.
 354          */
 355         pci_enable_busmaster(dev);
 356         if (!(pci_read_config(dev, PCIR_COMMAND, 2) & PCIM_CMD_BUSMASTEREN)) {
 357                 device_printf(dev, "can't enable bus-master feature\n");
 358                 goto out;
 359         }
 360
 361         /*
 362          * Detect the hardware interface version, set up the bus interface
 363          * indirection.
 364          */
 365         id = aac_find_ident(dev);
 366         sc->aac_hwif = id->hwif;
 367         switch(sc->aac_hwif) {
 368         case AAC_HWIF_I960RX:
 369         case AAC_HWIF_NARK:
 370                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 371                     "set hardware up for i960Rx/NARK");
 372                 sc->aac_if = &aac_rx_interface;
 373                 break;
 374         case AAC_HWIF_STRONGARM:
 375                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 376                     "set hardware up for StrongARM");
 377                 sc->aac_if = &aac_sa_interface;
 378                 break;
 379         case AAC_HWIF_RKT:
 380                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 381                     "set hardware up for Rocket/MIPS");
 382                 sc->aac_if = &aac_rkt_interface;
 383                 break;
 384         default:
 385                 sc->aac_hwif = AAC_HWIF_UNKNOWN;
 386                 device_printf(dev, "unknown hardware type\n");
 387                 goto out;
 388         }
 389
 390         /* Set up quirks */
 391         sc->flags = id->quirks;
 392
 393         /*
 394          * Allocate the PCI register window(s).
 395          */
 396         rid = PCIR_BAR(0);
 397         if ((sc->aac_regs_res0 = bus_alloc_resource_any(dev,
 398             SYS_RES_MEMORY, &rid, RF_ACTIVE)) == NULL) {
 399                 device_printf(dev, "can't allocate register window 0\n");
 400                 goto out;
 401         }
 402         sc->aac_btag0 = rman_get_bustag(sc->aac_regs_res0);
 403         sc->aac_bhandle0 = rman_get_bushandle(sc->aac_regs_res0);
 404
 405         if (sc->aac_hwif == AAC_HWIF_NARK) {
 406                 rid = PCIR_BAR(1);
 407                 if ((sc->aac_regs_res1 = bus_alloc_resource_any(dev,
 408                     SYS_RES_MEMORY, &rid, RF_ACTIVE)) == NULL) {
 409                         device_printf(dev,
 410                             "can't allocate register window 1\n");
 411                         goto out;
 412                 }
 413                 sc->aac_btag1 = rman_get_bustag(sc->aac_regs_res1);
 414                 sc->aac_bhandle1 = rman_get_bushandle(sc->aac_regs_res1);
 415         } else {
 416                 sc->aac_regs_res1 = sc->aac_regs_res0;
 417                 sc->aac_btag1 = sc->aac_btag0;
 418                 sc->aac_bhandle1 = sc->aac_bhandle0;
 419         }
 420
 421         /*
 422          * Allocate the interrupt.
 423          */
 424         sc->aac_irq_rid = 0;
 425         if ((sc->flags & AAC_FLAGS_NOMSI) != 0)
 426                 aac_msi_enable = 0;
 427         sc->aac_irq_type = pci_alloc_1intr(sc->aac_dev, aac_msi_enable,
 428             &sc->aac_irq_rid, &irq_flags);
 429         if ((sc->aac_irq = bus_alloc_resource_any(sc->aac_dev, SYS_RES_IRQ,
 430             &sc->aac_irq_rid, irq_flags)) == NULL) {
 431                 device_printf(dev, "can't allocate interrupt\n");
 432                 goto out;
 433         }
 434
 435         /*
 436          * Allocate the parent bus DMA tag appropriate for our PCI interface.
 437          *
 438          * Note that some of these controllers are 64-bit capable.
 439          */
 440         if (bus_dma_tag_create(bus_get_dma_tag(dev),    /* parent */
 441                                PAGE_SIZE, 0,            /* algnmnt, boundary */
 442                                BUS_SPACE_MAXADDR,       /* lowaddr */
 443                                BUS_SPACE_MAXADDR,       /* highaddr */
 444                                NULL, NULL,              /* filter, filterarg */
 445                                BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
 446                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
 447                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
 448                                0,                       /* flags */
 449                                &sc->aac_parent_dmat)) {
 450                 device_printf(dev, "can't allocate parent DMA tag\n");
 451                 goto out;
 452         }
 453
 454         /*
 455          * Do bus-independent initialisation.
 456          */
 457         error = aac_attach(sc);
 458
 459 out:
 460         if (error)
 461                 aac_free(sc);
 462         return(error);
 463 }
 464
 465 /*
 466  * Do nothing driver that will attach to the SCSI channels of a Dell PERC
 467  * controller.  This is needed to keep the power management subsystem from
 468  * trying to power down these devices.
 469  */
 470 static int aacch_probe(device_t dev);
 471 static int aacch_attach(device_t dev);
 472 static int aacch_detach(device_t dev);
 473
 474 static device_method_t aacch_methods[] = {
 475         /* Device interface */
 476         DEVMETHOD(device_probe,         aacch_probe),
 477         DEVMETHOD(device_attach,        aacch_attach),
 478         DEVMETHOD(device_detach,        aacch_detach),
 479         DEVMETHOD_END
 480 };
 481
 482 struct aacch_softc {
 483         device_t        dev;
 484 };
 485
 486 static driver_t aacch_driver = {
 487         "aacch",
 488         aacch_methods,
 489         sizeof(struct aacch_softc)
 490 };
 491
 492 static devclass_t       aacch_devclass;
 493 DRIVER_MODULE(aacch, pci, aacch_driver, aacch_devclass, NULL, NULL);
 494
 495 static int
 496 aacch_probe(device_t dev)
 497 {
 498
 499         if ((pci_get_vendor(dev) != 0x9005) ||
 500             (pci_get_device(dev) != 0x00c5))
 501                 return (ENXIO);
 502
 503         device_set_desc(dev, "AAC RAID Channel");
 504         return (-10);
 505 }
 506
 507 static int
 508 aacch_attach(device_t dev __unused)
 509 {
 510
 511         return (0);
 512 }
 513
 514 static int
 515 aacch_detach(device_t dev __unused)
 516 {
 517
 518         return (0);
 519 }