509 lines
15 KiB
C
509 lines
15 KiB
C
/*-
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* Copyright (c) 2000 Michael Smith
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* Copyright (c) 2001 Scott Long
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* Copyright (c) 2000 BSDi
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* Copyright (c) 2001 Adaptec, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* PCI bus interface and resource allocation.
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*/
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#include "opt_aac.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/bio.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/disk.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <sys/rman.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/aac/aacreg.h>
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#include <sys/aac_ioctl.h>
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#include <dev/aac/aacvar.h>
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static int aac_pci_probe(device_t dev);
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static int aac_pci_attach(device_t dev);
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static device_method_t aac_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, aac_pci_probe),
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DEVMETHOD(device_attach, aac_pci_attach),
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DEVMETHOD(device_detach, aac_detach),
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DEVMETHOD(device_suspend, aac_suspend),
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DEVMETHOD(device_resume, aac_resume),
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DEVMETHOD(bus_print_child, bus_generic_print_child),
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DEVMETHOD(bus_driver_added, bus_generic_driver_added),
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{ 0, 0 }
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};
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static driver_t aac_pci_driver = {
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"aac",
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aac_methods,
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sizeof(struct aac_softc)
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};
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static devclass_t aac_devclass;
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DRIVER_MODULE(aac, pci, aac_pci_driver, aac_devclass, 0, 0);
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MODULE_DEPEND(aac, pci, 1, 1, 1);
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struct aac_ident
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{
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u_int16_t vendor;
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u_int16_t device;
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u_int16_t subvendor;
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u_int16_t subdevice;
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int hwif;
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int quirks;
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char *desc;
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} aac_identifiers[] = {
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{0x1028, 0x0001, 0x1028, 0x0001, AAC_HWIF_I960RX, 0,
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"Dell PERC 2/Si"},
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{0x1028, 0x0002, 0x1028, 0x0002, AAC_HWIF_I960RX, 0,
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"Dell PERC 3/Di"},
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{0x1028, 0x0003, 0x1028, 0x0003, AAC_HWIF_I960RX, 0,
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"Dell PERC 3/Si"},
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{0x1028, 0x0004, 0x1028, 0x00d0, AAC_HWIF_I960RX, 0,
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"Dell PERC 3/Si"},
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{0x1028, 0x0002, 0x1028, 0x00d1, AAC_HWIF_I960RX, 0,
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"Dell PERC 3/Di"},
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{0x1028, 0x0002, 0x1028, 0x00d9, AAC_HWIF_I960RX, 0,
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"Dell PERC 3/Di"},
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{0x1028, 0x000a, 0x1028, 0x0106, AAC_HWIF_I960RX, 0,
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"Dell PERC 3/Di"},
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{0x1028, 0x000a, 0x1028, 0x011b, AAC_HWIF_I960RX, 0,
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"Dell PERC 3/Di"},
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{0x1028, 0x000a, 0x1028, 0x0121, AAC_HWIF_I960RX, 0,
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"Dell PERC 3/Di"},
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{0x1011, 0x0046, 0x9005, 0x0364, AAC_HWIF_STRONGARM, 0,
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"Adaptec AAC-364"},
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{0x1011, 0x0046, 0x9005, 0x0365, AAC_HWIF_STRONGARM,
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AAC_FLAGS_BROKEN_MEMMAP, "Adaptec SCSI RAID 5400S"},
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{0x1011, 0x0046, 0x9005, 0x1364, AAC_HWIF_STRONGARM, AAC_FLAGS_PERC2QC,
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"Dell PERC 2/QC"},
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{0x1011, 0x0046, 0x103c, 0x10c2, AAC_HWIF_STRONGARM, 0,
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"HP NetRaid-4M"},
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{0x9005, 0x0285, 0x9005, 0x0285, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
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AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
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{0x9005, 0x0285, 0x1028, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
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AAC_FLAGS_256FIBS, "Dell PERC 320/DC"},
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{0x9005, 0x0285, 0x9005, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
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AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2120S"},
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{0x9005, 0x0285, 0x9005, 0x0290, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
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"Adaptec SATA RAID 2410SA"},
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{0x9005, 0x0285, 0x1028, 0x0291, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
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"Dell CERC SATA RAID 2"},
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{0x9005, 0x0285, 0x9005, 0x0292, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
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"Adaptec SATA RAID 2810SA"},
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{0x9005, 0x0285, 0x9005, 0x0293, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
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"Adaptec SATA RAID 21610SA"},
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{0x9005, 0x0285, 0x103c, 0x3227, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB,
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"HP ML110 G2 (Adaptec 2610SA)"},
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{0x9005, 0x0286, 0x9005, 0x028c, AAC_HWIF_RKT, 0,
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"Adaptec SCSI RAID 2230S"},
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{0x9005, 0x0286, 0x9005, 0x028d, AAC_HWIF_RKT, 0,
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"Adaptec SCSI RAID 2130S"},
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{0x9005, 0x0285, 0x9005, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
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AAC_FLAGS_256FIBS, "Adaptec SCSI RAID 2200S"},
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{0x9005, 0x0285, 0x17aa, 0x0286, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
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AAC_FLAGS_256FIBS, "Legend S220"},
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{0x9005, 0x0285, 0x17aa, 0x0287, AAC_HWIF_I960RX, AAC_FLAGS_NO4GB |
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AAC_FLAGS_256FIBS, "Legend S230"},
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{0x9005, 0x0285, 0x9005, 0x0288, AAC_HWIF_I960RX, 0,
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"Adaptec SCSI RAID 3230S"},
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{0x9005, 0x0285, 0x9005, 0x0289, AAC_HWIF_I960RX, 0,
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"Adaptec SCSI RAID 3240S"},
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{0x9005, 0x0285, 0x9005, 0x028a, AAC_HWIF_I960RX, 0,
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"Adaptec SCSI RAID 2020ZCR"},
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{0x9005, 0x0285, 0x9005, 0x028b, AAC_HWIF_I960RX, 0,
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"Adaptec SCSI RAID 2025ZCR"},
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{0x9005, 0x0286, 0x9005, 0x029b, AAC_HWIF_RKT, 0,
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"Adaptec SATA RAID 2820SA"},
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{0x9005, 0x0286, 0x9005, 0x029c, AAC_HWIF_RKT, 0,
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"Adaptec SATA RAID 2620SA"},
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{0x9005, 0x0286, 0x9005, 0x029d, AAC_HWIF_RKT, 0,
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"Adaptec SATA RAID 2420SA"},
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{0x9005, 0x0286, 0x9005, 0x029e, AAC_HWIF_RKT, 0,
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"ICP ICP9024RO SCSI RAID"},
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{0x9005, 0x0286, 0x9005, 0x029f, AAC_HWIF_RKT, 0,
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"ICP ICP9014RO SCSI RAID"},
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{0x9005, 0x0285, 0x9005, 0x0294, AAC_HWIF_I960RX, 0,
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"Adaptec SATA RAID 2026ZCR"},
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{0x9005, 0x0285, 0x103c, 0x3227, AAC_HWIF_I960RX, 0,
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"Adaptec SATA RAID 2610SA"},
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{0x9005, 0x0285, 0x9005, 0x0296, AAC_HWIF_I960RX, 0,
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"Adaptec SCSI RAID 2240S"},
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{0x9005, 0x0285, 0x9005, 0x0297, AAC_HWIF_I960RX, 0,
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"Adaptec SAS RAID 4005SAS"},
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{0x9005, 0x0285, 0x1014, 0x02f2, AAC_HWIF_I960RX, 0,
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"IBM ServeRAID 8i"},
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{0x9005, 0x0285, 0x1014, 0x0312, AAC_HWIF_I960RX, 0,
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"IBM ServeRAID 8i"},
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{0x9005, 0x0285, 0x9005, 0x0298, AAC_HWIF_I960RX, 0,
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"Adaptec SAS RAID 4000SAS"},
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{0x9005, 0x0285, 0x9005, 0x0299, AAC_HWIF_I960RX, 0,
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"Adaptec SAS RAID 4800SAS"},
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{0x9005, 0x0285, 0x9005, 0x029a, AAC_HWIF_I960RX, 0,
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"Adaptec SAS RAID 4805SAS"},
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{0x9005, 0x0285, 0x9005, 0x028e, AAC_HWIF_I960RX, 0,
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"Adaptec SATA RAID 2020SA ZCR"},
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{0x9005, 0x0285, 0x9005, 0x028f, AAC_HWIF_I960RX, 0,
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"Adaptec SATA RAID 2025SA ZCR"},
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{0x9005, 0x0285, 0x9005, 0x02a4, AAC_HWIF_I960RX, 0,
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"ICP ICP9085LI SAS RAID"},
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{0x9005, 0x0285, 0x9005, 0x02a5, AAC_HWIF_I960RX, 0,
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"ICP ICP5085BR SAS RAID"},
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{0x9005, 0x0286, 0x9005, 0x02a0, AAC_HWIF_RKT, 0,
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"ICP ICP9047MA SATA RAID"},
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{0x9005, 0x0286, 0x9005, 0x02a1, AAC_HWIF_RKT, 0,
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"ICP ICP9087MA SATA RAID"},
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{0x9005, 0x0286, 0x9005, 0x02a6, AAC_HWIF_RKT, 0,
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"ICP9067MA SATA RAID"},
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{0x9005, 0x0285, 0x9005, 0x02b5, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 5445"},
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{0x9005, 0x0285, 0x9005, 0x02b6, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 5805"},
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{0x9005, 0x0285, 0x9005, 0x02b7, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 5085"},
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{0x9005, 0x0285, 0x9005, 0x02b8, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5445SL"},
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{0x9005, 0x0285, 0x9005, 0x02b9, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5085SL"},
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{0x9005, 0x0285, 0x9005, 0x02ba, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5805SL"},
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{0x9005, 0x0285, 0x9005, 0x02bb, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 3405"},
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{0x9005, 0x0285, 0x9005, 0x02bc, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 3805"},
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{0x9005, 0x0285, 0x9005, 0x02bd, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 31205"},
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{0x9005, 0x0285, 0x9005, 0x02be, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 31605"},
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{0x9005, 0x0285, 0x9005, 0x02bf, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5045BL"},
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{0x9005, 0x0285, 0x9005, 0x02c0, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5085BL"},
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{0x9005, 0x0285, 0x9005, 0x02c1, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5125BR"},
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{0x9005, 0x0285, 0x9005, 0x02c2, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5165BR"},
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{0x9005, 0x0285, 0x9005, 0x02c3, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 51205"},
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{0x9005, 0x0285, 0x9005, 0x02c4, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 51605"},
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{0x9005, 0x0285, 0x9005, 0x02c5, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5125SL"},
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{0x9005, 0x0285, 0x9005, 0x02c6, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5165SL"},
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{0x9005, 0x0285, 0x9005, 0x02c7, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 3085"},
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{0x9005, 0x0285, 0x9005, 0x02c8, AAC_HWIF_I960RX, 0,
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"ICP RAID ICP5805BL"},
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{0x9005, 0x0285, 0x9005, 0x02ce, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 51245"},
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{0x9005, 0x0285, 0x9005, 0x02cf, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 51645"},
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{0x9005, 0x0285, 0x9005, 0x02d0, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 52445"},
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{0x9005, 0x0285, 0x9005, 0x02d1, AAC_HWIF_I960RX, 0,
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"Adaptec RAID 5405"},
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{0x9005, 0x0286, 0x1014, 0x9580, AAC_HWIF_RKT, 0,
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"IBM ServeRAID-8k"},
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{0x9005, 0x0285, 0x1014, 0x034d, AAC_HWIF_I960RX, 0,
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"IBM ServeRAID 8s"},
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{0x9005, 0x0285, 0x108e, 0x7aac, AAC_HWIF_I960RX, 0,
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"Sun STK RAID REM"},
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{0x9005, 0x0285, 0x108e, 0x7aae, AAC_HWIF_I960RX, 0,
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"Sun STK RAID EM"},
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{0x9005, 0x0285, 0x108e, 0x286, AAC_HWIF_I960RX, 0,
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"SG-XPCIESAS-R-IN"},
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{0x9005, 0x0285, 0x108e, 0x287, AAC_HWIF_I960RX, 0,
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"SG-XPCIESAS-R-EX"},
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{0x9005, 0x0285, 0x15d9, 0x2b5, AAC_HWIF_I960RX, 0,
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"AOC-USAS-S4i"},
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{0x9005, 0x0285, 0x15d9, 0x2b6, AAC_HWIF_I960RX, 0,
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"AOC-USAS-S8i"},
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{0x9005, 0x0285, 0x15d9, 0x2c9, AAC_HWIF_I960RX, 0,
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"AOC-USAS-S4iR"},
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{0x9005, 0x0285, 0x15d9, 0x2ca, AAC_HWIF_I960RX, 0,
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"AOC-USAS-S8iR"},
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{0x9005, 0x0285, 0x15d9, 0x2d2, AAC_HWIF_I960RX, 0,
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"AOC-USAS-S8i-LP"},
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{0x9005, 0x0285, 0x15d9, 0x2d3, AAC_HWIF_I960RX, 0,
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"AOC-USAS-S8iR-LP"},
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{0, 0, 0, 0, 0, 0, 0}
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};
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struct aac_ident
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aac_family_identifiers[] = {
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{0x9005, 0x0285, 0, 0, AAC_HWIF_I960RX, 0,
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"Adaptec RAID Controller"},
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{0x9005, 0x0286, 0, 0, AAC_HWIF_RKT, 0,
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"Adaptec RAID Controller"},
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{0, 0, 0, 0, 0, 0, 0}
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};
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static struct aac_ident *
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aac_find_ident(device_t dev)
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{
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struct aac_ident *m;
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u_int16_t vendid, devid, sub_vendid, sub_devid;
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vendid = pci_get_vendor(dev);
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devid = pci_get_device(dev);
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sub_vendid = pci_get_subvendor(dev);
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sub_devid = pci_get_subdevice(dev);
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for (m = aac_identifiers; m->vendor != 0; m++) {
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if ((m->vendor == vendid) && (m->device == devid) &&
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(m->subvendor == sub_vendid) &&
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(m->subdevice == sub_devid))
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return (m);
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}
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for (m = aac_family_identifiers; m->vendor != 0; m++) {
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if ((m->vendor == vendid) && (m->device == devid))
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return (m);
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}
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return (NULL);
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}
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/*
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* Determine whether this is one of our supported adapters.
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*/
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static int
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aac_pci_probe(device_t dev)
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{
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struct aac_ident *id;
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debug_called(1);
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if ((id = aac_find_ident(dev)) != NULL) {
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device_set_desc(dev, id->desc);
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return(BUS_PROBE_DEFAULT);
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}
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return(ENXIO);
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}
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/*
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* Allocate resources for our device, set up the bus interface.
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*/
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static int
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aac_pci_attach(device_t dev)
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{
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struct aac_softc *sc;
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struct aac_ident *id;
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int error;
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u_int32_t command;
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debug_called(1);
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/*
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* Initialise softc.
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*/
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sc = device_get_softc(dev);
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bzero(sc, sizeof(*sc));
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sc->aac_dev = dev;
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/* assume failure is 'not configured' */
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error = ENXIO;
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/*
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* Verify that the adapter is correctly set up in PCI space.
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*/
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command = pci_read_config(sc->aac_dev, PCIR_COMMAND, 2);
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command |= PCIM_CMD_BUSMASTEREN;
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pci_write_config(dev, PCIR_COMMAND, command, 2);
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command = pci_read_config(sc->aac_dev, PCIR_COMMAND, 2);
|
|
if (!(command & PCIM_CMD_BUSMASTEREN)) {
|
|
device_printf(sc->aac_dev, "can't enable bus-master feature\n");
|
|
goto out;
|
|
}
|
|
if ((command & PCIM_CMD_MEMEN) == 0) {
|
|
device_printf(sc->aac_dev, "memory window not available\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Allocate the PCI register window.
|
|
*/
|
|
sc->aac_regs_rid = PCIR_BAR(0);
|
|
if ((sc->aac_regs_resource = bus_alloc_resource_any(sc->aac_dev,
|
|
SYS_RES_MEMORY,
|
|
&sc->aac_regs_rid,
|
|
RF_ACTIVE)) ==
|
|
NULL) {
|
|
device_printf(sc->aac_dev,
|
|
"couldn't allocate register window\n");
|
|
goto out;
|
|
}
|
|
sc->aac_btag = rman_get_bustag(sc->aac_regs_resource);
|
|
sc->aac_bhandle = rman_get_bushandle(sc->aac_regs_resource);
|
|
|
|
/* assume failure is 'out of memory' */
|
|
error = ENOMEM;
|
|
|
|
/*
|
|
* Allocate the parent bus DMA tag appropriate for our PCI interface.
|
|
*
|
|
* Note that some of these controllers are 64-bit capable.
|
|
*/
|
|
if (bus_dma_tag_create(NULL, /* parent */
|
|
PAGE_SIZE, 0, /* algnmnt, boundary */
|
|
BUS_SPACE_MAXADDR, /* lowaddr */
|
|
BUS_SPACE_MAXADDR, /* highaddr */
|
|
NULL, NULL, /* filter, filterarg */
|
|
BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
|
|
BUS_SPACE_UNRESTRICTED, /* nsegments */
|
|
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
|
|
0, /* flags */
|
|
NULL, NULL, /* No locking needed */
|
|
&sc->aac_parent_dmat)) {
|
|
device_printf(sc->aac_dev, "can't allocate parent DMA tag\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Detect the hardware interface version, set up the bus interface
|
|
* indirection.
|
|
*/
|
|
id = aac_find_ident(dev);
|
|
sc->aac_hwif = id->hwif;
|
|
switch(sc->aac_hwif) {
|
|
case AAC_HWIF_I960RX:
|
|
debug(2, "set hardware up for i960Rx");
|
|
sc->aac_if = aac_rx_interface;
|
|
break;
|
|
case AAC_HWIF_STRONGARM:
|
|
debug(2, "set hardware up for StrongARM");
|
|
sc->aac_if = aac_sa_interface;
|
|
break;
|
|
case AAC_HWIF_FALCON:
|
|
debug(2, "set hardware up for Falcon/PPC");
|
|
sc->aac_if = aac_fa_interface;
|
|
break;
|
|
case AAC_HWIF_RKT:
|
|
debug(2, "set hardware up for Rocket/MIPS");
|
|
sc->aac_if = aac_rkt_interface;
|
|
break;
|
|
default:
|
|
sc->aac_hwif = AAC_HWIF_UNKNOWN;
|
|
device_printf(sc->aac_dev, "unknown hardware type\n");
|
|
error = ENXIO;
|
|
goto out;
|
|
}
|
|
|
|
/* Set up quirks */
|
|
sc->flags = id->quirks;
|
|
|
|
/*
|
|
* Do bus-independent initialisation.
|
|
*/
|
|
error = aac_attach(sc);
|
|
|
|
out:
|
|
if (error)
|
|
aac_free(sc);
|
|
return(error);
|
|
}
|
|
|
|
/*
|
|
* Do nothing driver that will attach to the SCSI channels of a Dell PERC
|
|
* controller. This is needed to keep the power management subsystem from
|
|
* trying to power down these devices.
|
|
*/
|
|
static int aacch_probe(device_t dev);
|
|
static int aacch_attach(device_t dev);
|
|
static int aacch_detach(device_t dev);
|
|
|
|
static device_method_t aacch_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, aacch_probe),
|
|
DEVMETHOD(device_attach, aacch_attach),
|
|
DEVMETHOD(device_detach, aacch_detach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
struct aacch_softc {
|
|
device_t dev;
|
|
};
|
|
|
|
static driver_t aacch_driver = {
|
|
"aacch",
|
|
aacch_methods,
|
|
sizeof(struct aacch_softc)
|
|
};
|
|
|
|
static devclass_t aacch_devclass;
|
|
DRIVER_MODULE(aacch, pci, aacch_driver, aacch_devclass, 0, 0);
|
|
|
|
static int
|
|
aacch_probe(device_t dev)
|
|
{
|
|
|
|
if ((pci_get_vendor(dev) != 0x9005) ||
|
|
(pci_get_device(dev) != 0x00c5))
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "AAC RAID Channel");
|
|
return (-10);
|
|
}
|
|
|
|
static int
|
|
aacch_attach(device_t dev)
|
|
{
|
|
struct aacch_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
sc->dev = dev;
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
aacch_detach(device_t dev)
|
|
{
|
|
|
|
return (0);
|
|
}
|