sys/dev/aac/aac_pci.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2000 Michael Smith
   5  * Copyright (c) 2001 Scott Long
   6  * Copyright (c) 2000 BSDi
   7  * Copyright (c) 2001 Adaptec, Inc.
   8  * All rights reserved.
   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, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  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
  23  * FOR 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 #include <sys/cdefs.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 /*
  36  * PCI bus interface and resource allocation.
  37  */
  38
  39 #include "opt_aac.h"
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/kernel.h>
  44 #include <sys/module.h>
  45
  46 #include <sys/bio.h>
  47 #include <sys/bus.h>
  48 #include <sys/conf.h>
  49 #include <sys/disk.h>
  50
  51 #include <machine/bus.h>
  52 #include <machine/resource.h>
  53 #include <sys/rman.h>
  54
  55 #include <dev/pci/pcireg.h>
  56 #include <dev/pci/pcivar.h>
  57
  58 #include <dev/aac/aacreg.h>
  59 #include <sys/aac_ioctl.h>
  60 #include <dev/aac/aacvar.h>
  61
  62 static int      aac_pci_probe(device_t dev);
  63 static int      aac_pci_attach(device_t dev);
  64
  65 static int aac_enable_msi = 1;
  66 SYSCTL_INT(_hw_aac, OID_AUTO, enable_msi, CTLFLAG_RDTUN, &aac_enable_msi, 0,
  67     "Enable MSI interrupts");
  68
  69 static device_method_t aac_methods[] = {
  70         /* Device interface */
  71         DEVMETHOD(device_probe,         aac_pci_probe),
  72         DEVMETHOD(device_attach,        aac_pci_attach),
  73         DEVMETHOD(device_detach,        aac_detach),
  74         DEVMETHOD(device_suspend,       aac_suspend),
  75         DEVMETHOD(device_resume,        aac_resume),
  76
  77         DEVMETHOD_END
  78 };
  79
  80 static driver_t aac_pci_driver = {
  81         "aac",
  82         aac_methods,
  83         sizeof(struct aac_softc)
  84 };
  85
  86 static devclass_t       aac_devclass;
  87
  88 DRIVER_MODULE(aac, pci, aac_pci_driver, aac_devclass, NULL, NULL);
  89 MODULE_DEPEND(aac, pci, 1, 1, 1);
  90
  91 static const struct aac_ident
  92 {
  93         u_int16_t               vendor;
  94         u_int16_t               device;
  95         u_int16_t               subvendor;
  96         u_int16_t               subdevice;
  97         int                     hwif;
  98         int                     quirks;
  99         const char              *desc;
 100 } aac_identifiers[] = {
 101         {0x1028, 0x0001, 0x1028, 0x0001, AAC_HWIF_I960RX, 0,
 102         "Dell PERC 2/Si"},
 103         {0x1028, 0x0002, 0x1028, 0x0002, AAC_HWIF_I960RX, 0,
 104         "Dell PERC 3/Di"},
 105         {0x1028, 0x0003, 0x1028, 0x0003, AAC_HWIF_I960RX, 0,
 106         "Dell PERC 3/Si"},
 107         {0x1028, 0x0004, 0x1028, 0x00d0, AAC_HWIF_I960RX, 0,
 108         "Dell PERC 3/Si"},
 109         {0x1028, 0x0002, 0x1028, 0x00d1, AAC_HWIF_I960RX, 0,
 110         "Dell PERC 3/Di"},
 111         {0x1028, 0x0002, 0x1028, 0x00d9, AAC_HWIF_I960RX, 0,
 112         "Dell PERC 3/Di"},
 113         {0x1028, 0x000a, 0x1028, 0x0106, AAC_HWIF_I960RX, 0,
 114         "Dell PERC 3/Di"},
 115         {0x1028, 0x000a, 0x1028, 0x011b, AAC_HWIF_I960RX, 0,
 116         "Dell PERC 3/Di"},
 117         {0x1028, 0x000a, 0x1028, 0x0121, AAC_HWIF_I960RX, 0,
 118         "Dell PERC 3/Di"},
 119         {0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, 0,
 120         "Adaptec AAC-364"},
 121         {0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM,
 122          AAC_FLAGS_BROKEN_MEMMAP, "Adaptec SCSI RAID 5400S"},
 123         {0x1011, 0x0046, 0x9005, 0x1364, AAC_HWIF_STRONGARM, AAC_FLAGS_PERC2QC,
 124          "Dell PERC 2/QC"},
 125         {0x1011, 0x0046, 0x103c, 0x10c2, AAC_HWIF_STRONGARM, 0,
 126          "HP NetRaid-4M"},
 127         {0x9005, 0x0285, 0x9005, 0x0285, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 128          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
 129         {0x9005, 0x0285, 0x1028, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 130          AAC_FLAGS_256FIBS, "Dell PERC 320/DC"},
 131         {0x9005, 0x0285, 0x9005, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 132          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2120S"},
 133         {0x9005, 0x0285, 0x9005, 0x0290, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 134          "Adaptec SATA RAID 2410SA"},
 135         {0x9005, 0x0285, 0x1028, 0x0291, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 136          "Dell CERC SATA RAID 2"},
 137         {0x9005, 0x0285, 0x9005, 0x0292, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 138          "Adaptec SATA RAID 2810SA"},
 139         {0x9005, 0x0285, 0x9005, 0x0293, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 140          "Adaptec SATA RAID 21610SA"},
 141         {0x9005, 0x0285, 0x103c, 0x3227, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
 142          "HP ML110 G2 (Adaptec 2610SA)"},
 143         {0x9005, 0x0286, 0x9005, 0x028c, AAC_HWIF_RKT, AAC_FLAGS_NOMSI,
 144          "Adaptec SCSI RAID 2230S"},
 145         {0x9005, 0x0286, 0x9005, 0x028d, AAC_HWIF_RKT, 0,
 146          "Adaptec SCSI RAID 2130S"},
 147         {0x9005, 0x0285, 0x9005, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 148          AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
 149         {0x9005, 0x0285, 0x17aa, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 150          AAC_FLAGS_256FIBS, "Legend S220"},
 151         {0x9005, 0x0285, 0x17aa, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
 152          AAC_FLAGS_256FIBS, "Legend S230"},
 153         {0x9005, 0x0285, 0x9005, 0x0288, AAC_HWIF_I960RX, 0,
 154          "Adaptec SCSI RAID 3230S"},
 155         {0x9005, 0x0285, 0x9005, 0x0289, AAC_HWIF_I960RX, 0,
 156          "Adaptec SCSI RAID 3240S"},
 157         {0x9005, 0x0285, 0x9005, 0x028a, AAC_HWIF_I960RX, 0,
 158          "Adaptec SCSI RAID 2020ZCR"},
 159         {0x9005, 0x0285, 0x9005, 0x028b, AAC_HWIF_I960RX, 0,
 160          "Adaptec SCSI RAID 2025ZCR"},
 161         {0x9005, 0x0286, 0x9005, 0x029b, AAC_HWIF_RKT, AAC_FLAGS_NOMSI,
 162          "Adaptec SATA RAID 2820SA"},
 163         {0x9005, 0x0286, 0x9005, 0x029c, AAC_HWIF_RKT, 0,
 164          "Adaptec SATA RAID 2620SA"},
 165         {0x9005, 0x0286, 0x9005, 0x029d, AAC_HWIF_RKT, 0,
 166          "Adaptec SATA RAID 2420SA"},
 167         {0x9005, 0x0286, 0x9005, 0x029e, AAC_HWIF_RKT, 0,
 168          "ICP ICP9024RO SCSI RAID"},
 169         {0x9005, 0x0286, 0x9005, 0x029f, AAC_HWIF_RKT, 0,
 170          "ICP ICP9014RO SCSI RAID"},
 171         {0x9005, 0x0285, 0x9005, 0x0294, AAC_HWIF_I960RX, 0,
 172          "Adaptec SATA RAID 2026ZCR"},
 173         {0x9005, 0x0285, 0x9005, 0x0296, AAC_HWIF_I960RX, 0,
 174          "Adaptec SCSI RAID 2240S"},
 175         {0x9005, 0x0285, 0x9005, 0x0297, AAC_HWIF_I960RX, 0,
 176          "Adaptec SAS RAID 4005SAS"},
 177         {0x9005, 0x0285, 0x1014, 0x02f2, AAC_HWIF_I960RX, 0,
 178          "IBM ServeRAID 8i"},
 179         {0x9005, 0x0285, 0x1014, 0x0312, AAC_HWIF_I960RX, 0,
 180          "IBM ServeRAID 8i"},
 181         {0x9005, 0x0285, 0x9005, 0x0298, AAC_HWIF_I960RX, 0,
 182          "Adaptec RAID 4000"},
 183         {0x9005, 0x0285, 0x9005, 0x0299, AAC_HWIF_I960RX, 0,
 184          "Adaptec SAS RAID 4800SAS"},
 185         {0x9005, 0x0285, 0x9005, 0x029a, AAC_HWIF_I960RX, 0,
 186          "Adaptec SAS RAID 4805SAS"},
 187         {0x9005, 0x0285, 0x9005, 0x028e, AAC_HWIF_I960RX, 0,
 188          "Adaptec SATA RAID 2020SA ZCR"},
 189         {0x9005, 0x0285, 0x9005, 0x028f, AAC_HWIF_I960RX, 0,
 190          "Adaptec SATA RAID 2025SA ZCR"},
 191         {0x9005, 0x0285, 0x9005, 0x02a4, AAC_HWIF_I960RX, 0,
 192          "ICP ICP9085LI SAS RAID"},
 193         {0x9005, 0x0285, 0x9005, 0x02a5, AAC_HWIF_I960RX, 0,
 194          "ICP ICP5085BR SAS RAID"},
 195         {0x9005, 0x0286, 0x9005, 0x02a0, AAC_HWIF_RKT, 0,
 196          "ICP ICP9047MA SATA RAID"},
 197         {0x9005, 0x0286, 0x9005, 0x02a1, AAC_HWIF_RKT, 0,
 198          "ICP ICP9087MA SATA RAID"},
 199         {0x9005, 0x0286, 0x9005, 0x02a6, AAC_HWIF_RKT, 0,
 200          "ICP9067MA SATA RAID"},
 201         {0x9005, 0x0285, 0x9005, 0x02b5, AAC_HWIF_I960RX, 0,
 202          "Adaptec RAID 5445"},
 203         {0x9005, 0x0285, 0x9005, 0x02b6, AAC_HWIF_I960RX, 0,
 204          "Adaptec RAID 5805"},
 205         {0x9005, 0x0285, 0x9005, 0x02b7, AAC_HWIF_I960RX, 0,
 206          "Adaptec RAID 5085"},
 207         {0x9005, 0x0285, 0x9005, 0x02b8, AAC_HWIF_I960RX, 0,
 208          "ICP RAID ICP5445SL"},
 209         {0x9005, 0x0285, 0x9005, 0x02b9, AAC_HWIF_I960RX, 0,
 210          "ICP RAID ICP5085SL"},
 211         {0x9005, 0x0285, 0x9005, 0x02ba, AAC_HWIF_I960RX, 0,
 212          "ICP RAID ICP5805SL"},
 213         {0x9005, 0x0285, 0x9005, 0x02bb, AAC_HWIF_I960RX, 0,
 214          "Adaptec RAID 3405"},
 215         {0x9005, 0x0285, 0x9005, 0x02bc, AAC_HWIF_I960RX, 0,
 216          "Adaptec RAID 3805"},
 217         {0x9005, 0x0285, 0x9005, 0x02bd, AAC_HWIF_I960RX, 0,
 218          "Adaptec RAID 31205"},
 219         {0x9005, 0x0285, 0x9005, 0x02be, AAC_HWIF_I960RX, 0,
 220          "Adaptec RAID 31605"},
 221         {0x9005, 0x0285, 0x9005, 0x02bf, AAC_HWIF_I960RX, 0,
 222          "ICP RAID ICP5045BL"},
 223         {0x9005, 0x0285, 0x9005, 0x02c0, AAC_HWIF_I960RX, 0,
 224          "ICP RAID ICP5085BL"},
 225         {0x9005, 0x0285, 0x9005, 0x02c1, AAC_HWIF_I960RX, 0,
 226          "ICP RAID ICP5125BR"},
 227         {0x9005, 0x0285, 0x9005, 0x02c2, AAC_HWIF_I960RX, 0,
 228          "ICP RAID ICP5165BR"},
 229         {0x9005, 0x0285, 0x9005, 0x02c3, AAC_HWIF_I960RX, 0,
 230          "Adaptec RAID 51205"},
 231         {0x9005, 0x0285, 0x9005, 0x02c4, AAC_HWIF_I960RX, 0,
 232          "Adaptec RAID 51605"},
 233         {0x9005, 0x0285, 0x9005, 0x02c5, AAC_HWIF_I960RX, 0,
 234          "ICP RAID ICP5125SL"},
 235         {0x9005, 0x0285, 0x9005, 0x02c6, AAC_HWIF_I960RX, 0,
 236          "ICP RAID ICP5165SL"},
 237         {0x9005, 0x0285, 0x9005, 0x02c7, AAC_HWIF_I960RX, 0,
 238          "Adaptec RAID 3085"},
 239         {0x9005, 0x0285, 0x9005, 0x02c8, AAC_HWIF_I960RX, 0,
 240          "ICP RAID ICP5805BL"},
 241         {0x9005, 0x0285, 0x9005, 0x02ce, AAC_HWIF_I960RX, 0,
 242          "Adaptec RAID 51245"},
 243         {0x9005, 0x0285, 0x9005, 0x02cf, AAC_HWIF_I960RX, 0,
 244          "Adaptec RAID 51645"},
 245         {0x9005, 0x0285, 0x9005, 0x02d0, AAC_HWIF_I960RX, 0,
 246          "Adaptec RAID 52445"},
 247         {0x9005, 0x0285, 0x9005, 0x02d1, AAC_HWIF_I960RX, 0,
 248          "Adaptec RAID 5405"},
 249         {0x9005, 0x0285, 0x9005, 0x02d4, AAC_HWIF_I960RX, 0,
 250          "Adaptec RAID 2045"},
 251         {0x9005, 0x0285, 0x9005, 0x02d5, AAC_HWIF_I960RX, 0,
 252          "Adaptec RAID 2405"},
 253         {0x9005, 0x0285, 0x9005, 0x02d6, AAC_HWIF_I960RX, 0,
 254          "Adaptec RAID 2445"},
 255         {0x9005, 0x0285, 0x9005, 0x02d7, AAC_HWIF_I960RX, 0,
 256          "Adaptec RAID 2805"},
 257         {0x9005, 0x0286, 0x1014, 0x9580, AAC_HWIF_RKT, 0,
 258          "IBM ServeRAID-8k"},
 259         {0x9005, 0x0285, 0x1014, 0x034d, AAC_HWIF_I960RX, 0,
 260          "IBM ServeRAID 8s"},
 261         {0x9005, 0x0285, 0x108e, 0x7aac, AAC_HWIF_I960RX, 0,
 262          "Sun STK RAID REM"},
 263         {0x9005, 0x0285, 0x108e, 0x7aae, AAC_HWIF_I960RX, 0,
 264          "Sun STK RAID EM"},
 265         {0x9005, 0x0285, 0x108e, 0x286, AAC_HWIF_I960RX, 0,
 266          "SG-XPCIESAS-R-IN"},
 267         {0x9005, 0x0285, 0x108e, 0x287, AAC_HWIF_I960RX, 0,
 268          "SG-XPCIESAS-R-EX"},
 269         {0x9005, 0x0285, 0x15d9, 0x2b5, AAC_HWIF_I960RX, 0,
 270          "AOC-USAS-S4i"},
 271         {0x9005, 0x0285, 0x15d9, 0x2b6, AAC_HWIF_I960RX, 0,
 272          "AOC-USAS-S8i"},
 273         {0x9005, 0x0285, 0x15d9, 0x2c9, AAC_HWIF_I960RX, 0,
 274          "AOC-USAS-S4iR"},
 275         {0x9005, 0x0285, 0x15d9, 0x2ca, AAC_HWIF_I960RX, 0,
 276          "AOC-USAS-S8iR"},
 277         {0x9005, 0x0285, 0x15d9, 0x2d2, AAC_HWIF_I960RX, 0,
 278          "AOC-USAS-S8i-LP"},
 279         {0x9005, 0x0285, 0x15d9, 0x2d3, AAC_HWIF_I960RX, 0,
 280          "AOC-USAS-S8iR-LP"},
 281         {0, 0, 0, 0, 0, 0, 0}
 282 };
 283
 284 static const struct aac_ident
 285 aac_family_identifiers[] = {
 286         {0x9005, 0x0285, 0, 0, AAC_HWIF_I960RX, 0,
 287          "Adaptec RAID Controller"},
 288         {0x9005, 0x0286, 0, 0, AAC_HWIF_RKT, 0,
 289          "Adaptec RAID Controller"},
 290         {0, 0, 0, 0, 0, 0, 0}
 291 };
 292
 293 static const struct aac_ident *
 294 aac_find_ident(device_t dev)
 295 {
 296         const struct aac_ident *m;
 297         u_int16_t vendid, devid, sub_vendid, sub_devid;
 298
 299         vendid = pci_get_vendor(dev);
 300         devid = pci_get_device(dev);
 301         sub_vendid = pci_get_subvendor(dev);
 302         sub_devid = pci_get_subdevice(dev);
 303
 304         for (m = aac_identifiers; m->vendor != 0; m++) {
 305                 if ((m->vendor == vendid) && (m->device == devid) &&
 306                     (m->subvendor == sub_vendid) &&
 307                     (m->subdevice == sub_devid))
 308                         return (m);
 309         }
 310
 311         for (m = aac_family_identifiers; m->vendor != 0; m++) {
 312                 if ((m->vendor == vendid) && (m->device == devid))
 313                         return (m);
 314         }
 315         return (NULL);
 316 }
 317
 318 /*
 319  * Determine whether this is one of our supported adapters.
 320  */
 321 static int
 322 aac_pci_probe(device_t dev)
 323 {
 324         const struct aac_ident *id;
 325
 326         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 327
 328         if ((id = aac_find_ident(dev)) != NULL) {
 329                 device_set_desc(dev, id->desc);
 330                 return(BUS_PROBE_DEFAULT);
 331         }
 332         return(ENXIO);
 333 }
 334
 335 /*
 336  * Allocate resources for our device, set up the bus interface.
 337  */
 338 static int
 339 aac_pci_attach(device_t dev)
 340 {
 341         struct aac_softc *sc;
 342         const struct aac_ident *id;
 343         int count, error, rid;
 344
 345         fwprintf(NULL, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 346
 347         /*
 348          * Initialise softc.
 349          */
 350         sc = device_get_softc(dev);
 351         sc->aac_dev = dev;
 352
 353         /* assume failure is 'not configured' */
 354         error = ENXIO;
 355
 356         /*
 357          * Verify that the adapter is correctly set up in PCI space.
 358          */
 359         pci_enable_busmaster(dev);
 360         if (!(pci_read_config(dev, PCIR_COMMAND, 2) & PCIM_CMD_BUSMASTEREN)) {
 361                 device_printf(dev, "can't enable bus-master feature\n");
 362                 goto out;
 363         }
 364
 365         /*
 366          * Detect the hardware interface version, set up the bus interface
 367          * indirection.
 368          */
 369         id = aac_find_ident(dev);
 370         sc->aac_hwif = id->hwif;
 371         switch(sc->aac_hwif) {
 372         case AAC_HWIF_I960RX:
 373         case AAC_HWIF_NARK:
 374                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 375                     "set hardware up for i960Rx/NARK");
 376                 sc->aac_if = &aac_rx_interface;
 377                 break;
 378         case AAC_HWIF_STRONGARM:
 379                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 380                     "set hardware up for StrongARM");
 381                 sc->aac_if = &aac_sa_interface;
 382                 break;
 383         case AAC_HWIF_RKT:
 384                 fwprintf(sc, HBA_FLAGS_DBG_INIT_B,
 385                     "set hardware up for Rocket/MIPS");
 386                 sc->aac_if = &aac_rkt_interface;
 387                 break;
 388         default:
 389                 sc->aac_hwif = AAC_HWIF_UNKNOWN;
 390                 device_printf(dev, "unknown hardware type\n");
 391                 goto out;
 392         }
 393
 394         /* Set up quirks */
 395         sc->flags = id->quirks;
 396
 397         /*
 398          * Allocate the PCI register window(s).
 399          */
 400         rid = PCIR_BAR(0);
 401         if ((sc->aac_regs_res0 = bus_alloc_resource_any(dev,
 402             SYS_RES_MEMORY, &rid, RF_ACTIVE)) == NULL) {
 403                 device_printf(dev, "can't allocate register window 0\n");
 404                 goto out;
 405         }
 406         sc->aac_btag0 = rman_get_bustag(sc->aac_regs_res0);
 407         sc->aac_bhandle0 = rman_get_bushandle(sc->aac_regs_res0);
 408
 409         if (sc->aac_hwif == AAC_HWIF_NARK) {
 410                 rid = PCIR_BAR(1);
 411                 if ((sc->aac_regs_res1 = bus_alloc_resource_any(dev,
 412                     SYS_RES_MEMORY, &rid, RF_ACTIVE)) == NULL) {
 413                         device_printf(dev,
 414                             "can't allocate register window 1\n");
 415                         goto out;
 416                 }
 417                 sc->aac_btag1 = rman_get_bustag(sc->aac_regs_res1);
 418                 sc->aac_bhandle1 = rman_get_bushandle(sc->aac_regs_res1);
 419         } else {
 420                 sc->aac_regs_res1 = sc->aac_regs_res0;
 421                 sc->aac_btag1 = sc->aac_btag0;
 422                 sc->aac_bhandle1 = sc->aac_bhandle0;
 423         }
 424
 425         /*
 426          * Allocate the interrupt.
 427          */
 428         rid = 0;
 429         if (aac_enable_msi != 0 && (sc->flags & AAC_FLAGS_NOMSI) == 0) {
 430                 count = 1;
 431                 if (pci_alloc_msi(dev, &count) == 0)
 432                         rid = 1;
 433         }
 434         if ((sc->aac_irq = bus_alloc_resource_any(sc->aac_dev, SYS_RES_IRQ,
 435             &rid, RF_ACTIVE | (rid != 0 ? 0 : RF_SHAREABLE))) == NULL) {
 436                 device_printf(dev, "can't allocate interrupt\n");
 437                 goto out;
 438         }
 439
 440         /*
 441          * Allocate the parent bus DMA tag appropriate for our PCI interface.
 442          *
 443          * Note that some of these controllers are 64-bit capable.
 444          */
 445         if (bus_dma_tag_create(bus_get_dma_tag(dev),    /* parent */
 446                                PAGE_SIZE, 0,            /* algnmnt, boundary */
 447                                BUS_SPACE_MAXADDR,       /* lowaddr */
 448                                BUS_SPACE_MAXADDR,       /* highaddr */
 449                                NULL, NULL,              /* filter, filterarg */
 450                                BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
 451                                BUS_SPACE_UNRESTRICTED,  /* nsegments */
 452                                BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
 453                                0,                       /* flags */
 454                                NULL, NULL,              /* No locking needed */
 455                                &sc->aac_parent_dmat)) {
 456                 device_printf(dev, "can't allocate parent DMA tag\n");
 457                 goto out;
 458         }
 459
 460         /*
 461          * Do bus-independent initialisation.
 462          */
 463         error = aac_attach(sc);
 464
 465 out:
 466         if (error)
 467                 aac_free(sc);
 468         return(error);
 469 }
 470
 471 /*
 472  * Do nothing driver that will attach to the SCSI channels of a Dell PERC
 473  * controller.  This is needed to keep the power management subsystem from
 474  * trying to power down these devices.
 475  */
 476 static int aacch_probe(device_t dev);
 477 static int aacch_attach(device_t dev);
 478 static int aacch_detach(device_t dev);
 479
 480 static device_method_t aacch_methods[] = {
 481         /* Device interface */
 482         DEVMETHOD(device_probe,         aacch_probe),
 483         DEVMETHOD(device_attach,        aacch_attach),
 484         DEVMETHOD(device_detach,        aacch_detach),
 485         DEVMETHOD_END
 486 };
 487
 488 static driver_t aacch_driver = {
 489         "aacch",
 490         aacch_methods,
 491         1       /* no softc */
 492 };
 493
 494 static devclass_t       aacch_devclass;
 495 DRIVER_MODULE(aacch, pci, aacch_driver, aacch_devclass, NULL, NULL);
 496 MODULE_PNP_INFO("U16:vendor;U16:device;", pci, aac,
 497     aac_identifiers, nitems(aac_identifiers) - 1);
 498
 499 static int
 500 aacch_probe(device_t dev)
 501 {
 502
 503         if ((pci_get_vendor(dev) != 0x9005) ||
 504             (pci_get_device(dev) != 0x00c5))
 505                 return (ENXIO);
 506
 507         device_set_desc(dev, "AAC RAID Channel");
 508         return (-10);
 509 }
 510
 511 static int
 512 aacch_attach(device_t dev __unused)
 513 {
 514
 515         return (0);
 516 }
 517
 518 static int
 519 aacch_detach(device_t dev __unused)
 520 {
 521
 522         return (0);
 523 }