/*++

Copyright (c) 2004-2016 Alexandr A. Telyatnikov (Alter)

Module Name:
    id_init.cpp

Abstract:
    This is the chip-specific init module for ATA/ATAPI IDE controllers
    with Busmaster DMA and Serial ATA support

Author:
    Alexander A. Telyatnikov (Alter)

Environment:
    kernel mode only

Notes:

    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Revision History:

    Some parts of code were taken from FreeBSD 5.1-6.1 ATA driver by
        Søren Schmidt, Copyright (c) 1998-2007
    added IT8172 IDE controller support from Linux
    added VIA 8233/8235 fix from Linux
    added 80-pin cable detection from Linux for
        VIA, nVidia
    added support for non-standard layout of registers
    added SATA support
    added AHCI support

Licence:
    GPLv2

--*/

#include "stdafx.h"

static BUSMASTER_CONTROLLER_INFORMATION_BASE const AtiSouthAdapters[] = {
    PCI_DEV_HW_SPEC_BM( 4385, 1002, 0x00, ATA_MODE_NOT_SPEC, "ATI South", 0 ),
    PCI_DEV_HW_SPEC_BM( ffff, ffff, 0xff, BMLIST_TERMINATOR, NULL      , BMLIST_TERMINATOR )
    };


BOOLEAN
NTAPI
UniataChipDetectChannels(
    IN PVOID HwDeviceExtension,
    IN PPCI_COMMON_CONFIG pciData, // optional
    IN ULONG DeviceNumber,
    IN PPORT_CONFIGURATION_INFORMATION ConfigInfo
    )
{
    PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
    //ULONG slotNumber = deviceExtension->slotNumber;
    ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;
    ULONG VendorID =  deviceExtension->DevID        & 0xffff;
    //ULONG DeviceID = (deviceExtension->DevID >> 16) & 0xffff;
    //ULONG RevID    =  deviceExtension->RevID;
    ULONG ChipType = deviceExtension->HwFlags & CHIPTYPE_MASK;
    ULONG ChipFlags= deviceExtension->HwFlags & CHIPFLAG_MASK;
    ULONG i,n;

    KdPrint2((PRINT_PREFIX "UniataChipDetectChannels:\n" ));

    deviceExtension->AHCI_PI_mask = 0;

    if(ChipFlags & (UNIATA_SATA | UNIATA_AHCI)) {
        if(!deviceExtension->NumberChannels) {
            KdPrint2((PRINT_PREFIX "uninitialized SATA/AHCI port number -> 1\n"));
            deviceExtension->NumberChannels = 1;
        }
        if(AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"IgnoreAhciPM", 1 /* DEBUG */)) {
            KdPrint2((PRINT_PREFIX "SATA/AHCI w/o PM, max luns 1 or 2\n"));
            deviceExtension->NumberLuns = 2; // we may be in Legacy mode
            //chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
        } else {
            KdPrint2((PRINT_PREFIX "SATA/AHCI -> possible PM, max luns %d\n", SATA_MAX_PM_UNITS));
            deviceExtension->NumberLuns = SATA_MAX_PM_UNITS;
            //deviceExtension->NumberLuns = 1;
        }
    }
    if(deviceExtension->MasterDev) {
        KdPrint2((PRINT_PREFIX "MasterDev -> 1 chan\n"));
        deviceExtension->NumberChannels = 1;
    }
    for(n=0; n<deviceExtension->NumberChannels; n++) {
        if(AtapiRegCheckDevValue(deviceExtension, n, DEVNUM_NOT_SPECIFIED, L"Exclude", 0)) {
            KdPrint2((PRINT_PREFIX "Channel %d excluded\n", n));
            deviceExtension->AHCI_PI_mask &= ~((ULONG)1 << n);
        } else {
            deviceExtension->AHCI_PI_mask |= ((ULONG)1 << n);
        }
    }
    KdPrint2((PRINT_PREFIX "PortMask %#x\n", deviceExtension->AHCI_PI_mask));
    deviceExtension->AHCI_PI_mask = 
        AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"PortMask", (ULONG)0xffffffff >> (32-deviceExtension->NumberChannels) );
    KdPrint2((PRINT_PREFIX "Force PortMask %#x\n", deviceExtension->AHCI_PI_mask));

    for(i=deviceExtension->AHCI_PI_mask, n=0; i; n++, i=i>>1);
    KdPrint2((PRINT_PREFIX "mask -> %d chans\n", n));

    switch(VendorID) {
    case ATA_ACER_LABS_ID:
        switch(deviceExtension->DevID) {
        case 0x528710b9:
        case 0x528810b9:
            deviceExtension->NumberChannels = 4;
            KdPrint2((PRINT_PREFIX "Acer 4 chan\n"));
        }
        break;
    case ATA_PROMISE_ID:

        if(ChipType != PRMIO) {
            break;
        }
        if(!(ChipFlags & UNIATA_SATA)) {
            deviceExtension->NumberChannels = 4;
            KdPrint2((PRINT_PREFIX "Promise up to 4 chan\n"));
        } else
        if(ChipFlags & PRCMBO) {
            deviceExtension->NumberChannels = 3;
            KdPrint2((PRINT_PREFIX "Promise 3 chan\n"));
        } else {
            deviceExtension->NumberChannels = 4;
            KdPrint2((PRINT_PREFIX "Promise 4 chan\n"));
        }
        break;
    case ATA_MARVELL_ID:
        KdPrint2((PRINT_PREFIX "Marvell\n"));
        /* AHCI part has own DevID-based workaround */
        switch(deviceExtension->DevID) {
        case 0x610111ab: 
            /* 88SX6101 only have 1 PATA channel */
            if(BMList[deviceExtension->DevIndex].channel) {
                KdPrint2((PRINT_PREFIX "88SX6101/11 has no 2nd PATA chan\n"));
                return FALSE;
            }
            deviceExtension->NumberChannels = 1;
            KdPrint2((PRINT_PREFIX "88SX6101 PATA 1 chan\n"));
            break;
        }
        break;
    case ATA_ATI_ID:
        KdPrint2((PRINT_PREFIX "ATI\n"));
        switch(deviceExtension->DevID) {
        case ATA_ATI_IXP600:    
            KdPrint2((PRINT_PREFIX "  IXP600\n"));
            /* IXP600 only have 1 PATA channel */
            if(BMList[deviceExtension->DevIndex].channel) {
                KdPrint2((PRINT_PREFIX "New ATI no 2nd PATA chan\n"));
                return FALSE;
            }
            deviceExtension->NumberChannels = 1;
            KdPrint2((PRINT_PREFIX "New ATI PATA 1 chan\n"));
            break;

        case ATA_ATI_IXP700: {
            UCHAR satacfg = 0;
            PCI_SLOT_NUMBER slotData;
            ULONG j, slotNumber;
                 
            KdPrint2((PRINT_PREFIX "  IXP700\n"));
            /*
             * When "combined mode" is enabled, an additional PATA channel is
             * emulated with two SATA ports and appears on this device.
             * This mode can only be detected via SMB controller.
             */
            j = AtapiFindListedDev((BUSMASTER_CONTROLLER_INFORMATION_BASE*)&AtiSouthAdapters[0], -1, HwDeviceExtension, SystemIoBusNumber, PCISLOTNUM_NOT_SPECIFIED, &slotData);
            if(j != BMLIST_TERMINATOR) {
                slotNumber = slotData.u.AsULONG;

                GetPciConfig1(0xad, satacfg);
                KdPrint(("SATA controller %s (%s%s channel)\n",
                    (satacfg & 0x01) == 0 ? "disabled" : "enabled",
                    (satacfg & 0x08) == 0 ? "" : "combined mode, ",
                    (satacfg & 0x10) == 0 ? "primary" : "secondary"));
                /*
                 * If SATA controller is enabled but combined mode is disabled,
                 * we have only one PATA channel. Ignore a non-existent channel.
                 */
                if ((satacfg & 0x09) == 0x01) {
                    if(BMList[deviceExtension->DevIndex].channel) {
                        KdPrint2((PRINT_PREFIX "New ATI no 2nd PATA chan\n"));
                        return FALSE;
                    }
                    deviceExtension->NumberChannels = 1;
                    KdPrint2((PRINT_PREFIX "New ATI PATA 1 chan\n"));
                    break;
                } else {
                    KdPrint2((PRINT_PREFIX "New ATI 2 chan\n"));
                    deviceExtension->NumberChannels = 2;
                    /*
                    if (BMList[deviceExtension->DevIndex].channel != ((satacfg & 0x10) >> 4)) {
                        ;
                    }
                    */

                }
            }

            break; }
        }
        /* FALLTHROUGH */
    case ATA_SILICON_IMAGE_ID:

        if(ChipFlags & SIIBUG) {
            /* work around errata in early chips */
            deviceExtension->DmaSegmentLength = 15 * DEV_BSIZE;
            deviceExtension->DmaSegmentAlignmentMask = 8192-1;
        }
        if(ChipType != SIIMIO) {
            break;
        }
        if(!pciData) {
            break;
        }

        if(VendorID == ATA_SILICON_IMAGE_ID) {
            KdPrint2((PRINT_PREFIX "New SII\n"));
        } else {
            KdPrint2((PRINT_PREFIX "ATI SATA\n"));
        }
        if(deviceExtension->HwFlags & SII4CH) {
            deviceExtension->NumberChannels = 4;
            KdPrint2((PRINT_PREFIX "4 chan\n"));
        }
        break;
    case ATA_VIA_ID:
        if(/*(deviceExtension->DevID == 0x32491106) &&
           ScsiPortConvertPhysicalAddressToUlong((*ConfigInfo->AccessRanges)[5].RangeStart)*/
           deviceExtension->HwFlags & VIABAR) {
            deviceExtension->NumberChannels = 3;
            KdPrint2((PRINT_PREFIX "VIA 3 chan\n"));
        }
        if(ChipFlags & VIASATA) {
            /* 2 SATA without SATA registers on first channel + 1 PATA on second */
            // do nothing, generic PATA INIT
            KdPrint2((PRINT_PREFIX "VIA SATA without SATA regs -> no PM\n"));
            deviceExtension->NumberLuns = 1;
        }
        break;
    case ATA_ITE_ID:
        /* ITE ATA133 controller */
        if(deviceExtension->DevID == 0x82131283) { 
            if(BMList[deviceExtension->DevIndex].channel) {
                KdPrint2((PRINT_PREFIX "New ITE has no 2nd PATA chan\n"));
                return FALSE;
            }
            deviceExtension->NumberChannels = 1;
            KdPrint2((PRINT_PREFIX "New ITE PATA 1 chan\n"));
        }
        break;
#if 0
    case ATA_INTEL_ID:
        /* New Intel PATA controllers */
        if(g_opt_VirtualMachine != VM_VBOX &&
           /*deviceExtension->DevID == 0x27df8086 ||
           deviceExtension->DevID == 0x269e8086 ||
           deviceExtension->DevID == ATA_I82801HBM*/
           ChipFlags & I1CH) { 
            if(BMList[deviceExtension->DevIndex].channel) {
                KdPrint2((PRINT_PREFIX "New Intel PATA has no 2nd chan\n"));
                return FALSE;
            }
            deviceExtension->NumberChannels = 1;
            KdPrint2((PRINT_PREFIX "New Intel PATA 1 chan\n"));
        }
        break;
#endif // this code is removed from newer FreeBSD
    case ATA_JMICRON_ID:
        /* New JMicron PATA controllers */
        if(deviceExtension->DevID == ATA_JMB361 ||
           deviceExtension->DevID == ATA_JMB363 ||
           deviceExtension->DevID == ATA_JMB368) { 
            if(BMList[deviceExtension->DevIndex].channel) {
                KdPrint2((PRINT_PREFIX "New JMicron has no 2nd chan\n"));
                return FALSE;
            }
            deviceExtension->NumberChannels = 1;
            KdPrint2((PRINT_PREFIX "New JMicron PATA 1 chan\n"));
        }
        break;
    case ATA_CYRIX_ID:
        if(ChipType == CYRIX_OLD) {
            UCHAR tmp8;
            ULONG slotNumber;
            slotNumber = deviceExtension->slotNumber;
            KdPrint2((PRINT_PREFIX "Cyrix slot %#x\n", slotNumber));
            GetPciConfig1(0x60, tmp8);
            if(tmp8 & (1 << BMList[deviceExtension->DevIndex].channel)) {
                KdPrint2((PRINT_PREFIX "Old Cyrix chan %d ok\n", BMList[deviceExtension->DevIndex].channel));
            } else {
                KdPrint2((PRINT_PREFIX "Old Cyrix no chan %d\n", BMList[deviceExtension->DevIndex].channel));
                return FALSE;
            }
        }
        break;
    } // end switch(VendorID)

    i = AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"NumberChannels", n);
    if(!i) {
        i = n;
    }
    KdPrint2((PRINT_PREFIX "reg -> %d chans\n", n));

    deviceExtension->NumberChannels = min(i, deviceExtension->NumberChannels);
    if(!deviceExtension->NumberChannels) {
        KdPrint2((PRINT_PREFIX "all channels blocked\n", n));
        return FALSE;
    }
    deviceExtension->AHCI_PI_mask &= (ULONG)0xffffffff >> (32-deviceExtension->NumberChannels);
    KdPrint2((PRINT_PREFIX "Final PortMask %#x\n", deviceExtension->AHCI_PI_mask));

    return TRUE;

} // end UniataChipDetectChannels()

NTSTATUS
NTAPI
UniataChipDetect(
    IN PVOID HwDeviceExtension,
    IN PPCI_COMMON_CONFIG pciData, // optional
    IN ULONG DeviceNumber,
    IN OUT PPORT_CONFIGURATION_INFORMATION ConfigInfo,
    IN BOOLEAN* simplexOnly
    )
{
    PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
    ULONG slotNumber = deviceExtension->slotNumber;
    ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;
    ULONG VendorID =  deviceExtension->DevID        & 0xffff;
    ULONG DeviceID = (deviceExtension->DevID >> 16) & 0xffff;
    ULONG RevID    =  deviceExtension->RevID;
    ULONG i, c;
    BUSMASTER_CONTROLLER_INFORMATION_BASE* DevTypeInfo;
    PHW_CHANNEL chan;
    ULONG ChipType;
    ULONG ChipFlags;
    ULONG tmp32;
    UCHAR tmp8;
    ULONG BaseMemAddress;
    ULONG BaseIoAddress1;
    ULONG BaseIoAddress2;
    ULONG BaseIoAddressBM;
    BOOLEAN MemIo = FALSE;
    BOOLEAN IsPata = FALSE;

    KdPrint2((PRINT_PREFIX "UniataChipDetect:\n" ));
    KdPrint2((PRINT_PREFIX "HwFlags: %#x\n", deviceExtension->HwFlags));

    i = Ata_is_dev_listed((PBUSMASTER_CONTROLLER_INFORMATION_BASE)&BusMasterAdapters[0], VendorID, 0xffff, 0, NUM_BUSMASTER_ADAPTERS);

    c = AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"ForceSimplex", 0);
    if(c) {
        *simplexOnly = TRUE;
    }

    // defaults
    BaseIoAddressBM = pciData->u.type0.BaseAddresses[4] & ~0x07;
    deviceExtension->MaxTransferMode = BaseIoAddressBM ? ATA_DMA : ATA_PIO4;
    ConfigInfo->MaximumTransferLength = DEV_BSIZE*256;
    deviceExtension->MaximumDmaTransferLength = ConfigInfo->MaximumTransferLength;
    //deviceExtension->NumberOfPhysicalBreaks = min(deviceExtension->MaximumDmaTransferLength/PAGE_SIZE+1, ATA_DMA_ENTRIES);
    deviceExtension->DmaSegmentLength = 0x10000;
    deviceExtension->DmaSegmentAlignmentMask = 0xffff;

    KdPrint2((PRINT_PREFIX "i: %#x\n", i));
    if(i != BMLIST_TERMINATOR) {
        DevTypeInfo = (PBUSMASTER_CONTROLLER_INFORMATION_BASE)&BusMasterAdapters[i];
    } else {
unknown_dev:
        if(Ata_is_ahci_dev(pciData)) {
            KdPrint2((PRINT_PREFIX "  AHCI candidate"));

            deviceExtension->NumberChannels = 0;
            if(!UniataAhciDetect(HwDeviceExtension, pciData, ConfigInfo)) {
                KdPrint2((PRINT_PREFIX "  AHCI init failed - not detected\n"));
                return STATUS_UNSUCCESSFUL;
            }
            KdPrint2((PRINT_PREFIX "  unknown AHCI dev, addr %#x ", deviceExtension->BaseIoAHCI_0.Addr));
        }
        KdPrint2((PRINT_PREFIX "  unknown dev, BM addr %#x ", BaseIoAddressBM));
        DevTypeInfo = NULL;
        KdPrint2((PRINT_PREFIX "  MaxTransferMode %#x\n", deviceExtension->MaxTransferMode));

        if(!UniataChipDetectChannels(HwDeviceExtension, pciData, DeviceNumber, ConfigInfo)) {
            return STATUS_UNSUCCESSFUL;
        }
        if(!UniataAllocateLunExt(deviceExtension, UNIATA_ALLOCATE_NEW_LUNS)) {
            return STATUS_UNSUCCESSFUL;
        }
        return STATUS_SUCCESS;
    }

    static BUSMASTER_CONTROLLER_INFORMATION_BASE const SiSAdapters[] = {
        PCI_DEV_HW_SPEC_BM( 1183, 1039, 0x00, ATA_SA150, "SiS 1183 IDE" , SIS133NEW),
        PCI_DEV_HW_SPEC_BM( 1182, 1039, 0x00, ATA_SA150, "SiS 1182" , SISSATA   | UNIATA_SATA),
        PCI_DEV_HW_SPEC_BM( 0183, 1039, 0x00, ATA_SA150, "SiS 183 RAID"  , SISSATA   | UNIATA_SATA),
        PCI_DEV_HW_SPEC_BM( 0182, 1039, 0x00, ATA_SA150, "SiS 182"  , SISSATA   | UNIATA_SATA),
        PCI_DEV_HW_SPEC_BM( 0181, 1039, 0x00, ATA_SA150, "SiS 181"  , SISSATA   | UNIATA_SATA),
        PCI_DEV_HW_SPEC_BM( 0180, 1039, 0x00, ATA_SA150, "SiS 180"  , SISSATA   | UNIATA_SATA),
        PCI_DEV_HW_SPEC_BM( 0965, 1039, 0x00, ATA_UDMA6, "SiS 965"  , SIS133NEW        ),
        PCI_DEV_HW_SPEC_BM( 0964, 1039, 0x00, ATA_UDMA6, "SiS 964"  , SIS133NEW        ),
        PCI_DEV_HW_SPEC_BM( 0963, 1039, 0x00, ATA_UDMA6, "SiS 963"  , SIS133NEW        ),
        PCI_DEV_HW_SPEC_BM( 0962, 1039, 0x00, ATA_UDMA6, "SiS 962"  , SIS133NEW        ),

        PCI_DEV_HW_SPEC_BM( 0745, 1039, 0x00, ATA_UDMA5, "SiS 745"  , SIS100NEW        ),
        PCI_DEV_HW_SPEC_BM( 0735, 1039, 0x00, ATA_UDMA5, "SiS 735"  , SIS100NEW        ),
        PCI_DEV_HW_SPEC_BM( 0733, 1039, 0x00, ATA_UDMA5, "SiS 733"  , SIS100NEW        ),
        PCI_DEV_HW_SPEC_BM( 0730, 1039, 0x00, ATA_UDMA5, "SiS 730"  , SIS100OLD        ),

        PCI_DEV_HW_SPEC_BM( 0646, 1039, 0x00, ATA_UDMA6, "SiS 645DX", SIS133NEW        ),
/*        PCI_DEV_HW_SPEC_BM( 0645, 1039, 0x00, ATA_UDMA6, "SiS 645"  , SIS133NEW        ),*/
/*        PCI_DEV_HW_SPEC_BM( 0640, 1039, 0x00, ATA_UDMA4, "SiS 640"  , SIS_SOUTH        ),*/
        PCI_DEV_HW_SPEC_BM( 0635, 1039, 0x00, ATA_UDMA5, "SiS 635"  , SIS100NEW        ),
        PCI_DEV_HW_SPEC_BM( 0633, 1039, 0x00, ATA_UDMA5, "SiS 633"  , SIS100NEW        ),
        PCI_DEV_HW_SPEC_BM( 0630, 1039, 0x30, ATA_UDMA5, "SiS 630S" , SIS100OLD        ),
        PCI_DEV_HW_SPEC_BM( 0630, 1039, 0x00, ATA_UDMA4, "SiS 630"  , SIS66            ),
        PCI_DEV_HW_SPEC_BM( 0620, 1039, 0x00, ATA_UDMA4, "SiS 620"  , SIS66            ),

        PCI_DEV_HW_SPEC_BM( 0550, 1039, 0x00, ATA_UDMA5, "SiS 550"  , SIS66            ),
        PCI_DEV_HW_SPEC_BM( 0540, 1039, 0x00, ATA_UDMA4, "SiS 540"  , SIS66            ),
        PCI_DEV_HW_SPEC_BM( 0530, 1039, 0x00, ATA_UDMA4, "SiS 530"  , SIS66            ),

//        PCI_DEV_HW_SPEC_BM( 0008, 1039, 0x04, ATA_UDMA6, "SiS 962L" , SIS133OLD        ), // ???
//        PCI_DEV_HW_SPEC_BM( 0008, 1039, 0x00, ATA_UDMA6, "SiS 961"  , SIS133OLD        ),

        PCI_DEV_HW_SPEC_BM( 5517, 1039, 0x00, ATA_UDMA5, "SiS 961"  , SIS100NEW | SIS_BASE ),
        PCI_DEV_HW_SPEC_BM( 5518, 1039, 0x00, ATA_UDMA6, "SiS 962/3", SIS133NEW | SIS_BASE ),
        PCI_DEV_HW_SPEC_BM( 5513, 1039, 0xc2, ATA_UDMA2, "SiS 5513" , SIS33 | SIS_BASE ),
        PCI_DEV_HW_SPEC_BM( 5513, 1039, 0x00, ATA_WDMA2, "SiS 5513" , SIS33 | SIS_BASE ),
        PCI_DEV_HW_SPEC_BM( 0601, 1039, 0x00, ATA_UDMA2, "SiS 5513" , SIS33 | SIS_BASE ),
        PCI_DEV_HW_SPEC_BM( ffff, ffff, 0xff, BMLIST_TERMINATOR       , NULL       , BMLIST_TERMINATOR )
        };

    static BUSMASTER_CONTROLLER_INFORMATION_BASE const ViaAdapters[] = {
        PCI_DEV_HW_SPEC_BM( 0586, 1106, 0x41, ATA_UDMA2, "VIA 82C586B", VIA33  | 0x00   ),
        PCI_DEV_HW_SPEC_BM( 0586, 1106, 0x40, ATA_UDMA2, "VIA 82C586B", VIA33  | VIAPRQ ),
        PCI_DEV_HW_SPEC_BM( 0586, 1106, 0x02, ATA_UDMA2, "VIA 82C586B", VIA33  | 0x00   ),
        PCI_DEV_HW_SPEC_BM( 0586, 1106, 0x00, ATA_WDMA2, "VIA 82C586" , VIA33  | 0x00   ),
        PCI_DEV_HW_SPEC_BM( 0596, 1106, 0x12, ATA_UDMA4, "VIA 82C596B", VIA66  | VIACLK ),
        PCI_DEV_HW_SPEC_BM( 0596, 1106, 0x00, ATA_UDMA2, "VIA 82C596" , VIA33  | 0x00   ),
        PCI_DEV_HW_SPEC_BM( 0686, 1106, 0x40, ATA_UDMA5, "VIA 82C686B", VIA100 | VIABUG ),
        PCI_DEV_HW_SPEC_BM( 0686, 1106, 0x10, ATA_UDMA4, "VIA 82C686A", VIA66  | VIACLK ),
        PCI_DEV_HW_SPEC_BM( 0686, 1106, 0x00, ATA_UDMA2, "VIA 82C686" , VIA33  | 0x00   ),
        PCI_DEV_HW_SPEC_BM( 8231, 1106, 0x00, ATA_UDMA5, "VIA 8231"   , VIA100 | VIABUG ),
        PCI_DEV_HW_SPEC_BM( 3074, 1106, 0x00, ATA_UDMA5, "VIA 8233"   , VIA100 | 0x00   ),
        PCI_DEV_HW_SPEC_BM( 3109, 1106, 0x00, ATA_UDMA5, "VIA 8233C"  , VIA100 | 0x00   ),
        PCI_DEV_HW_SPEC_BM( 3147, 1106, 0x00, ATA_UDMA6, "VIA 8233A"  , VIA133 | 0x00 ),
        PCI_DEV_HW_SPEC_BM( 3177, 1106, 0x00, ATA_UDMA6, "VIA 8235"   , VIA133 | 0x00 ),
        PCI_DEV_HW_SPEC_BM( 3227, 1106, 0x00, ATA_UDMA6, "VIA 8237"   , VIA133 | 0x00 ),
        PCI_DEV_HW_SPEC_BM( 0591, 1106, 0x00, ATA_UDMA6, "VIA 8237A"  , VIA133 | 0x00 ),
        // presence of AHCI controller means something about isa-mapped part
        PCI_DEV_HW_SPEC_BM( 5337, 1106, 0x00, ATA_UDMA6, "VIA 8237S"  , VIA133 | 0x00 ),
        PCI_DEV_HW_SPEC_BM( 5372, 1106, 0x00, ATA_UDMA6, "VIA 8237"   , VIA133 | 0x00 ),
        PCI_DEV_HW_SPEC_BM( 7372, 1106, 0x00, ATA_UDMA6, "VIA 8237"   , VIA133 | 0x00 ),
        PCI_DEV_HW_SPEC_BM( 3349, 1106, 0x00, ATA_UDMA6, "VIA 8251"   , VIA133 | 0x00 ),
        PCI_DEV_HW_SPEC_BM( 8324, 1106, 0x00, ATA_SA150, "VIA CX700"  , VIANEW | VIASATA),
        PCI_DEV_HW_SPEC_BM( 8353, 1106, 0x00, ATA_SA150, "VIA VX800"  , VIANEW | VIASATA),
        PCI_DEV_HW_SPEC_BM( 8409, 1106, 0x00, ATA_UDMA6, "VIA VX855"  , VIA133 | 0x00 ),
        PCI_DEV_HW_SPEC_BM( 8410, 1106, 0x00, ATA_SA300, "VIA VX900"  , VIANEW | VIASATA),
        PCI_DEV_HW_SPEC_BM( ffff, ffff, 0xff, BMLIST_TERMINATOR       , NULL         , BMLIST_TERMINATOR )
        };

    static BUSMASTER_CONTROLLER_INFORMATION_BASE const ViaSouthAdapters[] = {
        PCI_DEV_HW_SPEC_BM( 3112, 1106, 0x00, ATA_MODE_NOT_SPEC, "VIA 8361", VIASOUTH ),
        PCI_DEV_HW_SPEC_BM( 0305, 1106, 0x00, ATA_MODE_NOT_SPEC, "VIA 8363", VIASOUTH ),
        PCI_DEV_HW_SPEC_BM( 0391, 1106, 0x00, ATA_MODE_NOT_SPEC, "VIA 8371", VIASOUTH ),
        PCI_DEV_HW_SPEC_BM( 3102, 1106, 0x00, ATA_MODE_NOT_SPEC, "VIA 8662", VIASOUTH ),
        PCI_DEV_HW_SPEC_BM( ffff, ffff, 0xff, BMLIST_TERMINATOR, NULL      , BMLIST_TERMINATOR )
        };

    KdPrint2((PRINT_PREFIX "VendorID/DeviceID/Rev %#x/%#x/%#x\n", VendorID, DeviceID, RevID));

    switch(VendorID) {

    case ATA_SIS_ID:
        /*
           We shall get here for all SIS controllers, even unlisted.
           Then perform bus scan to find SIS bridge and decide what to do with controller
         */
        KdPrint2((PRINT_PREFIX "ATA_SIS_ID\n"));
        DevTypeInfo = (BUSMASTER_CONTROLLER_INFORMATION_BASE*)&SiSAdapters[0];
        i = AtapiFindListedDev(DevTypeInfo, -1, HwDeviceExtension, SystemIoBusNumber, PCISLOTNUM_NOT_SPECIFIED, NULL);
        if(i != BMLIST_TERMINATOR) {
            deviceExtension->FullDevName = SiSAdapters[i].FullDevName;
        }
        goto for_ugly_chips;

    case ATA_VIA_ID: 
        KdPrint2((PRINT_PREFIX "ATA_VIA_ID\n"));
        // New chips have own DeviceId
        if(deviceExtension->DevID != ATA_VIA82C571 &&
           deviceExtension->DevID != ATA_VIACX700IDE &&
           deviceExtension->DevID != ATA_VIASATAIDE &&
           deviceExtension->DevID != ATA_VIASATAIDE2 &&
           deviceExtension->DevID != ATA_VIASATAIDE3) {
            KdPrint2((PRINT_PREFIX "Via new\n"));
            break;
        }
        KdPrint2((PRINT_PREFIX "Via-old-style %x\n", deviceExtension->DevID));
        // Traditionally, chips have same DeviceId, we can distinguish between them
        // only by ISA Bridge DeviceId
        DevTypeInfo = (BUSMASTER_CONTROLLER_INFORMATION_BASE*)&ViaSouthAdapters[0];
        i = AtapiFindListedDev(DevTypeInfo, -1, HwDeviceExtension, SystemIoBusNumber,
                               PCISLOTNUM_NOT_SPECIFIED/*slotNumber*/, NULL);
/*        if(i == BMLIST_TERMINATOR) {
            i = AtapiFindListedDev(DevTypeInfo, -1, HwDeviceExtension, SystemIoBusNumber, PCISLOTNUM_NOT_SPECIFIED, NULL);
        }*/
        if(i != BMLIST_TERMINATOR) {
            KdPrint2((PRINT_PREFIX "VIASOUTH\n"));
            deviceExtension->HwFlags |= VIASOUTH;
        }
        DevTypeInfo = (BUSMASTER_CONTROLLER_INFORMATION_BASE*)&ViaAdapters[0];
        i = AtapiFindListedDev(DevTypeInfo, -1, HwDeviceExtension, SystemIoBusNumber,
                               PCISLOTNUM_NOT_SPECIFIED/*slotNumber*/, NULL);
        if(i != BMLIST_TERMINATOR) {
            deviceExtension->FullDevName = ViaAdapters[i].FullDevName;
        }
        goto for_ugly_chips;

    default:

        // do nothing
        break;

#if 0
        KdPrint2((PRINT_PREFIX "Default\n"));

        deviceExtension->MaxTransferMode = deviceExtension->BaseIoAddressBM_0 ? ATA_DMA : ATA_PIO4;
        /* do extra chipset specific setups */
        switch(deviceExtension->DevID) {

      //case ATA_CYPRESS_ID:
        case 0xc6931080:         /* 82c693 ATA controller */
            deviceExtension->MaxTransferMode = ATA_WDMA2;
            break;

        case 0x000116ca:         /* Cenatek Rocket Drive controller */
            deviceExtension->MaxTransferMode = ATA_WDMA2;
            break;

/*      case ATA_CYRIX_ID:
            DevTypeInfo = &CyrixAdapters[0];
            break;*/
        case 0x01021078:        /* Cyrix 5530 ATA33 controller */
            deviceExtension->MaxTransferMode = ATA_UDMA2;
            break;

        case 0x06401039:        /* CMD 640 known bad, no DMA */
        case 0x06011039:
            *simplexOnly = TRUE; 

            /* FALLTHROUGH */

        case 0x10001042:        /* RZ 100x known bad, no DMA */
        case 0x10011042:

            if(deviceExtension->BaseIoAddressBM_0)
                ScsiPortFreeDeviceBase(HwDeviceExtension,
                                       deviceExtension->BaseIoAddressBM_0);

            UniataInitIoResEx(&deviceExtension->BaseIoAddressBM_0, 0, FALSE, FALSE);
            deviceExtension->BusMaster = DMA_MODE_NONE;
            deviceExtension->MaxTransferMode = ATA_PIO4;
            break;

        case 0x81721283:        /* IT8172 IDE controller */
            deviceExtension->MaxTransferMode = ATA_UDMA2;
            *simplexOnly = TRUE; 
            break;

        default:
            return STATUS_NOT_FOUND;
        }
        return STATUS_SUCCESS;
#endif
    }

    i = Ata_is_dev_listed(DevTypeInfo, VendorID, DeviceID, RevID, -1);
for_ugly_chips:
    KdPrint2((PRINT_PREFIX "i: %#x\n", i));
    if(i == BMLIST_TERMINATOR) {
        goto unknown_dev;
        //return STATUS_NOT_FOUND;
    }
    deviceExtension->MaxTransferMode =  DevTypeInfo[i].MaxTransferMode;
    deviceExtension->HwFlags         |= DevTypeInfo[i].RaidFlags;

    KdPrint2((PRINT_PREFIX "HwFlags: %#x\n", deviceExtension->HwFlags));

    tmp32 = AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"HwFlagsOverride", deviceExtension->HwFlags);
    KdPrint2((PRINT_PREFIX "HwFlagsOverride: %#x\n", tmp32));
    deviceExtension->HwFlags = tmp32;

    tmp32 = AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"HwFlagsAdd", 0);
    KdPrint2((PRINT_PREFIX "HwFlagsAdd: %#x\n", tmp32));
    deviceExtension->HwFlags |= tmp32;

    KdPrint2((PRINT_PREFIX "HwFlags (final): %#x\n", deviceExtension->HwFlags));
    if(deviceExtension->HwFlags & UNIATA_SIMPLEX_ONLY) {
        KdPrint2((PRINT_PREFIX "UNIATA_SIMPLEX_ONLY\n" ));
        *simplexOnly = TRUE;
    }

    KdPrint2((PRINT_PREFIX "MaxTransferMode: %#x\n", deviceExtension->MaxTransferMode));
    tmp32 = AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"MaxTransferMode", deviceExtension->MaxTransferMode);
    if(tmp32 != 0xffffffff) {
        KdPrint2((PRINT_PREFIX "MaxTransferMode (overriden): %#x\n", deviceExtension->MaxTransferMode));
        deviceExtension->MaxTransferMode = tmp32;
    }

    if(deviceExtension->MaxTransferMode >= ATA_SA150) {
        KdPrint2((PRINT_PREFIX "setting UNIATA_SATA flag\n"));
        deviceExtension->HwFlags |= UNIATA_SATA;
    }

/*
    ConfigInfo->MaximumTransferLength = DEV_BSIZE*256;
    deviceExtension->MaximumDmaTransferLength = ConfigInfo->MaximumTransferLength;
*/
    ChipType  = deviceExtension->HwFlags & CHIPTYPE_MASK;
    ChipFlags = deviceExtension->HwFlags & CHIPFLAG_MASK;

    /* for even more ugly AHCI-capable chips */
    if(ChipFlags & UNIATA_AHCI) {
        /* 
           Seems, some chips may have inoperable/alternative BAR5 in SATA mode
           This can be detected via PCI SubClass
         */
        switch(VendorID) {
        case ATA_NVIDIA_ID: 
        case ATA_ATI_ID: 
            KdPrint2((PRINT_PREFIX "ATA_xxx_ID check AHCI subclass\n"));
            if((pciData)->SubClass == PCI_DEV_SUBCLASS_IDE) {
                KdPrint2((PRINT_PREFIX "Non-AHCI mode\n"));
                ChipFlags &= ~UNIATA_AHCI;
                deviceExtension->HwFlags &= ~UNIATA_AHCI;
            }
            break;
        default:
            if(!ScsiPortConvertPhysicalAddressToUlong((*ConfigInfo->AccessRanges)[5].RangeStart)) {
                KdPrint2((PRINT_PREFIX "No BAR5, try BM\n"));
                ChipFlags &= ~UNIATA_AHCI;
                deviceExtension->HwFlags &= ~UNIATA_AHCI;
            }
            break;
        }
    }

    if(ChipFlags & UNIATA_AHCI) {

        deviceExtension->NumberChannels = 0;
        if(!UniataAhciDetect(HwDeviceExtension, pciData, ConfigInfo)) {
            KdPrint2((PRINT_PREFIX "  AHCI detect failed\n"));
            return STATUS_UNSUCCESSFUL;
        }

    } else
    if(!UniataChipDetectChannels(HwDeviceExtension, pciData, DeviceNumber, ConfigInfo)) {
        return STATUS_UNSUCCESSFUL;
    }
    // UniataAhciDetect() sets proper number of channels
    if(!UniataAllocateLunExt(deviceExtension, UNIATA_ALLOCATE_NEW_LUNS)) {
        return STATUS_UNSUCCESSFUL;
    }

    switch(VendorID) {
    case ATA_ACER_LABS_ID:
        if(ChipFlags & UNIATA_SATA) {
            deviceExtension->AltRegMap = TRUE; // inform generic resource allocator
            BaseIoAddress1  = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                    0, 0, 0x10);
            BaseIoAddress2  = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                    1, 0, 0x10);
            BaseIoAddressBM = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                    4, 0, deviceExtension->NumberChannels*sizeof(IDE_BUSMASTER_REGISTERS));
            for(c=0; c<deviceExtension->NumberChannels; c++) {
                //ULONG unit01 = (c & 1);
                ULONG unit10 = (c & 2);
                chan = &deviceExtension->chan[c];

                for (i=0; i<=IDX_IO1_SZ; i++) {
                    UniataInitIoRes(chan, IDX_IO1+i, BaseIoAddress1 + i + (unit10 ? 8 : 0), FALSE, FALSE);
                }
                UniataInitIoRes(chan, IDX_IO2_AltStatus, BaseIoAddress2  + 2 + (unit10 ? 4 : 0), FALSE, FALSE);
                UniataInitSyncBaseIO(chan);

                for (i=0; i<=IDX_BM_IO_SZ; i++) {
                    UniataInitIoRes(chan, IDX_BM_IO+i, BaseIoAddressBM + i + (c * sizeof(IDE_BUSMASTER_REGISTERS)), FALSE, FALSE);
                }

                // SATA not supported yet

                //chan->RegTranslation[IDX_BM_Command]          = BaseMemAddress + 0x260 + offs7;
                //chan->RegTranslation[IDX_BM_PRD_Table]        = BaseMemAddress + 0x244 + offs7;
                //chan->RegTranslation[IDX_BM_DeviceSpecific0]  = BaseMemAddress + (c << 2);

                chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
            }
        }
        break;
    case ATA_NVIDIA_ID:
        if(ChipFlags & UNIATA_SATA) {
            KdPrint2((PRINT_PREFIX "NVIDIA SATA\n"));
            BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                    5, 0, ((ChipFlags & NV4OFF) ? 0x400 : 0) + 0x40*2);
            KdPrint2((PRINT_PREFIX "BaseMemAddress %x\n", BaseMemAddress));
            if(!BaseMemAddress) {
                return STATUS_UNSUCCESSFUL;
            }
            if((*ConfigInfo->AccessRanges)[5].RangeInMemory) {
                KdPrint2((PRINT_PREFIX "MemIo\n"));
                MemIo = TRUE;
            }
            UniataInitIoResEx(&deviceExtension->BaseIoAddressSATA_0, BaseMemAddress, MemIo, FALSE);
            for(c=0; c<deviceExtension->NumberChannels; c++) {
                chan = &deviceExtension->chan[c];

                UniataInitIoRes(chan, IDX_SATA_SStatus,  BaseMemAddress +     (c << 6), MemIo, FALSE);
                UniataInitIoRes(chan, IDX_SATA_SError,   BaseMemAddress + 4 + (c << 6), MemIo, FALSE);
                UniataInitIoRes(chan, IDX_SATA_SControl, BaseMemAddress + 8 + (c << 6), MemIo, FALSE);

                chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
            }
        }
        break;
    case ATA_PROMISE_ID:

        if(ChipType != PRMIO) {
            break;
        }
        if(!pciData) {
            break;
        }
        deviceExtension->AltRegMap = TRUE; // inform generic resource allocator

        /* BAR4 -> res1 */
        BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                4, 0, 0x4000);
        KdPrint2((PRINT_PREFIX "BaseMemAddress[4] %x\n", BaseMemAddress));
        if(!BaseMemAddress) {
            return STATUS_UNSUCCESSFUL;
        }
        if((*ConfigInfo->AccessRanges)[4].RangeInMemory) {
            KdPrint2((PRINT_PREFIX "MemIo\n"));
            MemIo = TRUE;
        }
        UniataInitIoResEx(&deviceExtension->BaseIoAddressSATA_0, BaseMemAddress, MemIo, FALSE);

        /* BAR3 -> res2 */
        BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                3, 0, 0xd0000);
        KdPrint2((PRINT_PREFIX "BaseMemAddress[3] %x\n", BaseMemAddress));
        if(!BaseMemAddress) {
            return STATUS_UNSUCCESSFUL;
        }
        if((*ConfigInfo->AccessRanges)[3].RangeInMemory) {
            KdPrint2((PRINT_PREFIX "MemIo\n"));
            MemIo = TRUE;
        }
        UniataInitIoResEx(&deviceExtension->BaseIoAddressBM_0, BaseMemAddress, MemIo, FALSE);

        if(!(ChipFlags & UNIATA_SATA)) {
            UCHAR reg48;

            reg48 = AtapiReadPortEx1(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),0x48);
            deviceExtension->NumberChannels = ((reg48 & 0x01) ? 1 : 0) +
                                              ((reg48 & 0x02) ? 1 : 0) +
                                              2;
            KdPrint2((PRINT_PREFIX "Channels -> %d\n", deviceExtension->NumberChannels));
        }

        for(c=0; c<deviceExtension->NumberChannels; c++) {

            /* res2-based */
            ULONG offs8, offs7;

            chan = &deviceExtension->chan[c];

            offs8 = c << 8;
            offs7 = c << 7;

            for (i=0; i<=IDX_IO1_SZ; i++) {
                UniataInitIoRes(chan, IDX_IO1+i,          BaseMemAddress + 0x200 + (i << 2) + offs8, MemIo, FALSE);
            }
            UniataInitIoRes(chan, IDX_IO2_AltStatus,      BaseMemAddress + 0x238 + offs7, MemIo, FALSE);

            UniataInitSyncBaseIO(chan);

            UniataInitIoRes(chan, IDX_BM_Command,         BaseMemAddress + 0x260 + offs7, MemIo, FALSE);
            UniataInitIoRes(chan, IDX_BM_PRD_Table,       BaseMemAddress + 0x244 + offs7, MemIo, FALSE);
            UniataInitIoRes(chan, IDX_BM_DeviceSpecific0, BaseMemAddress + (c << 2),      MemIo, FALSE);

            if((ChipFlags & PRSATA) ||
               ((ChipFlags & PRCMBO) && c<2)) {
                KdPrint2((PRINT_PREFIX "Promise SATA\n"));

                UniataInitIoRes(chan, IDX_SATA_SStatus,  BaseMemAddress + 0x400 + offs7, MemIo, FALSE);
                UniataInitIoRes(chan, IDX_SATA_SError,   BaseMemAddress + 0x404 + offs7, MemIo, FALSE);
                UniataInitIoRes(chan, IDX_SATA_SControl, BaseMemAddress + 0x408 + offs7, MemIo, FALSE);

                chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
            } else {
                KdPrint2((PRINT_PREFIX "Promise PATA\n"));
                chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA6);
            }
        }
        break;

    case ATA_ATI_ID:
        KdPrint2((PRINT_PREFIX "ATI\n"));
        if(ChipType == ATI700) {
            KdPrint2((PRINT_PREFIX "ATI700\n"));
            if(!(ChipFlags & UNIATA_AHCI)) {
                KdPrint2((PRINT_PREFIX "IXP700 PATA\n"));
                chan = &deviceExtension->chan[0];
                chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA5);
            }
            break;
        }
        /* FALLTHROUGH */
    case ATA_SILICON_IMAGE_ID: {

        if(ChipFlags & SIIBUG) {
        }
        if(ChipType != SIIMIO) {
            break;
        }
        if(!pciData) {
            break;
        }

        if(VendorID == ATA_SILICON_IMAGE_ID) {
            KdPrint2((PRINT_PREFIX "New SII\n"));
        } else {
            KdPrint2((PRINT_PREFIX "ATI SATA\n"));
        }
        //if(deviceExtension->HwFlags & SII4CH) {
            deviceExtension->AltRegMap = TRUE; // inform generic resource allocator
        //}
        BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                5, 0, 0x800);
        KdPrint2((PRINT_PREFIX "BaseMemAddress %x\n", BaseMemAddress));
        if(!BaseMemAddress) {
            return STATUS_UNSUCCESSFUL;
        }
        if((*ConfigInfo->AccessRanges)[5].RangeInMemory) {
            KdPrint2((PRINT_PREFIX "MemIo\n"));
            MemIo = TRUE;
        }
        UniataInitIoResEx(&deviceExtension->BaseIoAddressSATA_0, BaseMemAddress, MemIo, FALSE);

        for(c=0; c<deviceExtension->NumberChannels; c++) {
            ULONG unit01 = (c & 1);
            ULONG unit10 = (c & 2);

            chan = &deviceExtension->chan[c];

            if(deviceExtension->AltRegMap) {
                for (i=0; i<=IDX_IO1_SZ; i++) {
                    UniataInitIoRes(chan, IDX_IO1+i, BaseMemAddress + 0x80 + i + (unit01 << 6) + (unit10 << 8), MemIo, FALSE);
                }
                UniataInitIoRes(chan, IDX_IO2_AltStatus, BaseMemAddress + 0x8a + (unit01 << 6) + (unit10 << 8), MemIo, FALSE);
                UniataInitSyncBaseIO(chan);

                UniataInitIoRes(chan, IDX_BM_Command,   BaseMemAddress + 0x00 + (unit01 << 3) + (unit10 << 8), MemIo, FALSE);
                UniataInitIoRes(chan, IDX_BM_Status,    BaseMemAddress + 0x02 + (unit01 << 3) + (unit10 << 8), MemIo, FALSE);
                UniataInitIoRes(chan, IDX_BM_PRD_Table, BaseMemAddress + 0x04 + (unit01 << 3) + (unit10 << 8), MemIo, FALSE);
                UniataInitIoRes(chan, IDX_BM_DeviceSpecific0, BaseMemAddress + 0x10 + (unit01 << 3) + (unit10 << 8), MemIo, FALSE);
                UniataInitIoRes(chan, IDX_BM_DeviceSpecific1, BaseMemAddress + 0x40 + (unit01 << 2) + (unit10 << 8), MemIo, FALSE);
            }

            if(chan->MaxTransferMode < ATA_SA150) {
                // do nothing for PATA part
                KdPrint2((PRINT_PREFIX "No SATA regs for PATA part\n"));
            } else
            if(ChipFlags & UNIATA_SATA) {
                UniataInitIoRes(chan, IDX_SATA_SStatus,  BaseMemAddress + 0x104 + (unit01 << 7) + (unit10 << 8), MemIo, FALSE);
                UniataInitIoRes(chan, IDX_SATA_SError,   BaseMemAddress + 0x108 + (unit01 << 2) + (unit10 << 8), MemIo, FALSE);
                UniataInitIoRes(chan, IDX_SATA_SControl, BaseMemAddress + 0x100 + (unit01 << 2) + (unit10 << 8), MemIo, FALSE);

                chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
            }
        }
        break; }

    case ATA_SERVERWORKS_ID: {

        if(ChipType != SWKSMIO) {
            break;
        }
        if(!pciData) {
            break;
        }

        KdPrint2((PRINT_PREFIX "ServerWorks\n"));

        deviceExtension->AltRegMap = TRUE; // inform generic resource allocator
        BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                5, 0, 0x400);
        KdPrint2((PRINT_PREFIX "BaseMemAddress %x\n", BaseMemAddress));
        if(!BaseMemAddress) {
            return STATUS_UNSUCCESSFUL;
        }
        if((*ConfigInfo->AccessRanges)[5].RangeInMemory) {
            KdPrint2((PRINT_PREFIX "MemIo\n"));
            MemIo = TRUE;
        }
        UniataInitIoResEx(&deviceExtension->BaseIoAddressSATA_0, BaseMemAddress, MemIo, FALSE);

        for(c=0; c<deviceExtension->NumberChannels; c++) {
            ULONG offs = c*0x100;

            chan = &deviceExtension->chan[c];
            for (i=0; i<=IDX_IO1_SZ; i++) {
                UniataInitIoRes(chan, IDX_IO1+i, BaseMemAddress + offs + i*4, MemIo, FALSE);
            }
            UniataInitIoRes(chan, IDX_IO2_AltStatus, BaseMemAddress + offs + 0x20, MemIo, FALSE);
            UniataInitSyncBaseIO(chan);

            UniataInitIoRes(chan, IDX_BM_Command,   BaseMemAddress + offs + 0x30, MemIo, FALSE);
            UniataInitIoRes(chan, IDX_BM_Status,    BaseMemAddress + offs + 0x32, MemIo, FALSE);
            UniataInitIoRes(chan, IDX_BM_PRD_Table, BaseMemAddress + offs + 0x34, MemIo, FALSE);

            UniataInitIoRes(chan, IDX_SATA_SStatus,  BaseMemAddress + offs + 0x40, MemIo, FALSE);
            UniataInitIoRes(chan, IDX_SATA_SError,   BaseMemAddress + offs + 0x44, MemIo, FALSE);
            UniataInitIoRes(chan, IDX_SATA_SControl, BaseMemAddress + offs + 0x48, MemIo, FALSE);

            chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
        }
        break; }

    case ATA_SIS_ID: {
        //if(ChipType != SIS_SOUTH) {}
        BOOLEAN SIS_182=FALSE;

        if(!(ChipFlags & SIS_BASE)) {
            KdPrint2((PRINT_PREFIX "Found SIS_SOUTH\n"));
            //PrintNtConsole("Found SIS_SOUTH\n");
            break;
        }
        // Make some additional checks
        KdPrint2((PRINT_PREFIX "ChipType == SIS_BASE\n"));
        ChangePciConfig1(0x57, (a & 0x7f));
        GetPciConfig4(0x00, tmp32);
        if(tmp32 == ATA_SIS5518) {
            ChipType = SIS133NEW;
            deviceExtension->HwFlags = (deviceExtension->HwFlags & ~CHIPTYPE_MASK) | SIS133NEW;
            deviceExtension->MaxTransferMode = ATA_UDMA6;
            KdPrint2((PRINT_PREFIX "UniataChipDetect: SiS 962/963 DMA %#x controller\n", deviceExtension->MaxTransferMode));
            //PrintNtConsole("UniataChipDetect: SiS 962/963 DMA %#x controller\n", deviceExtension->MaxTransferMode);
            // Restore device ID
            ChangePciConfig1(0x57, (a | 0x80));
        } else {
            static BUSMASTER_CONTROLLER_INFORMATION_BASE const SiSSouthAdapters[] = {
                PCI_DEV_HW_SPEC_BM( 0008, 1039, 0x10, ATA_MODE_NOT_SPEC, "SiS 961", 0 ),
//                PCI_DEV_HW_SPEC_BM( 0008, 1039, 0x00, ATA_MODE_NOT_SPEC, "SiS 961", 0 ),
                PCI_DEV_HW_SPEC_BM( ffff, ffff, 0xff, ATA_MODE_NOT_SPEC, NULL     , -1 )
                };
            // Save settings
            GetPciConfig1(0x4a, tmp8);
            ChangePciConfig1(0x4a, (a | 0x10));
            if(tmp32 == ATA_SIS5513 ||
               tmp32 == ATA_SIS5517) {
                i = AtapiFindListedDev((BUSMASTER_CONTROLLER_INFORMATION_BASE*)&SiSSouthAdapters[0],
                     -1, HwDeviceExtension, SystemIoBusNumber, PCISLOTNUM_NOT_SPECIFIED, NULL); 
                if(i != BMLIST_TERMINATOR) {
                    KdPrint2((PRINT_PREFIX "SIS South\n"));
                    deviceExtension->HwFlags = (deviceExtension->HwFlags & ~CHIPTYPE_MASK) | SIS133OLD;
                    deviceExtension->MaxTransferMode = ATA_UDMA6;
                    //deviceExtension->MaxTransferMode = SiSSouthAdapters[i].MaxTransferMode;
                    if(SiSSouthAdapters[i].RaidFlags & UNIATA_SATA) {
                        KdPrint2((PRINT_PREFIX "SIS South SATA\n"));
                        deviceExtension->HwFlags |= UNIATA_SATA;
                        if(SiSSouthAdapters[i].nDeviceId == 0x1182 ||
                           SiSSouthAdapters[i].nDeviceId == 0x1183) {
                            KdPrint2((PRINT_PREFIX "SIS_182\n"));
                            SIS_182 = TRUE;
                        }
                    }
                } else {
                    // SiS-South not found
                    if(tmp32 == ATA_SIS5517) {
                        deviceExtension->HwFlags = (deviceExtension->HwFlags & ~CHIPTYPE_MASK) | SIS100NEW;
                        deviceExtension->MaxTransferMode = ATA_UDMA5;
                    } else {
                        // generic SiS33
                        KdPrint2((PRINT_PREFIX "Generic SiS DMA\n"));
                    }
                }
            }
            // Restore settings
            SetPciConfig1(0x4a, tmp8);
            KdPrint2((PRINT_PREFIX "UniataChipDetect: SiS 961 DMA %#x controller\n", deviceExtension->MaxTransferMode));
            //PrintNtConsole("UniataChipDetect: SiS 961 DMA %#x controller\n", deviceExtension->MaxTransferMode);
            if(deviceExtension->HwFlags & UNIATA_SATA) {
                KdPrint2((PRINT_PREFIX "SiS SATA\n"));

                BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                        5, 0, 0x400);
                KdPrint2((PRINT_PREFIX "BaseMemAddress %x\n", BaseMemAddress));
                if(BaseMemAddress) {
                    if((*ConfigInfo->AccessRanges)[5].RangeInMemory) {
                        KdPrint2((PRINT_PREFIX "MemIo\n"));
                        MemIo = TRUE;
                    }
                    UniataInitIoResEx(&deviceExtension->BaseIoAddressSATA_0, BaseMemAddress, MemIo, FALSE);

                    for(c=0; c<deviceExtension->NumberChannels; c++) {
                        ULONG offs = c << (SIS_182 ? 5 : 6);

                        chan = &deviceExtension->chan[c];
                        UniataInitIoRes(chan, IDX_SATA_SStatus,  BaseMemAddress + 0 + offs, MemIo, FALSE);
                        UniataInitIoRes(chan, IDX_SATA_SError,   BaseMemAddress + 4 + offs, MemIo, FALSE);
                        UniataInitIoRes(chan, IDX_SATA_SControl, BaseMemAddress + 8 + offs, MemIo, FALSE);

                        chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
                    }
                }
            }
        }
        //ChangePciConfig1(0x57, (a | 0x80));
        break; }

    case ATA_VIA_ID: {

        if(ChipFlags & VIASATA) {
            /* 2 SATA without SATA registers on first channel + 1 PATA on second */
            // do nothing, generic PATA INIT
            KdPrint2((PRINT_PREFIX "VIA SATA without SATA regs\n"));
            break;
        }
        if(ChipFlags & UNIATA_SATA) {

            ULONG IoSize = 0;
            BaseMemAddress = 0;

            switch(DeviceID) {
            case 0x3149: // VIA 6420
                KdPrint2((PRINT_PREFIX "VIA 6420\n"));
                IoSize = 0x80;
                break;
            case 0x3249: // VIA 6421
                KdPrint2((PRINT_PREFIX "VIA 6421\n"));
                IoSize = 0x40;
                break;
            }
            if(IoSize) {
                KdPrint2((PRINT_PREFIX "IoSize %x\n", IoSize));
                /*deviceExtension->*/BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                        5, 0, IoSize * deviceExtension->NumberChannels);
                if(BaseMemAddress && (*ConfigInfo->AccessRanges)[5].RangeInMemory) {
                    KdPrint2((PRINT_PREFIX "MemIo\n"));
                    MemIo = TRUE;
                }
                UniataInitIoResEx(&deviceExtension->BaseIoAddressSATA_0, BaseMemAddress, MemIo, FALSE);
            }
            if(/*deviceExtension->*/BaseMemAddress) {
                KdPrint2((PRINT_PREFIX "UniataChipDetect: BAR5 %x\n", /*deviceExtension->*/BaseMemAddress));
                if(ChipFlags & VIABAR) {

                    ULONG BaseIoAddressBM_0;
                    ULONG BaseIo;

                    KdPrint2((PRINT_PREFIX "UniataChipDetect: VIABAR\n"));
                    /*deviceExtension->*/BaseIoAddressBM_0 = /*(PIDE_BUSMASTER_REGISTERS)*/
                        AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber, 4, 0,
                                        sizeof(IDE_BUSMASTER_REGISTERS)*deviceExtension->NumberChannels);
                    deviceExtension->AltRegMap = TRUE; // inform generic resource allocator
                    for(c=0; c<deviceExtension->NumberChannels; c++) {

                        chan = &deviceExtension->chan[c];

                        BaseIo = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber, c, 0, /*0x80*/ sizeof(IDE_REGISTERS_1) + sizeof(IDE_REGISTERS_2)*2);

                        for (i=0; i<=IDX_IO1_SZ; i++) {
                            UniataInitIoRes(chan, IDX_IO1+i, BaseIo + i, FALSE, FALSE);
                        }
                        UniataInitIoRes(chan, IDX_IO2_AltStatus, BaseIo + sizeof(IDE_REGISTERS_1) + 2, FALSE, FALSE);
                        UniataInitSyncBaseIO(chan);

                        for (i=0; i<=IDX_BM_IO_SZ; i++) {
                            UniataInitIoRes(chan, IDX_BM_IO+i, BaseIoAddressBM_0 + sizeof(IDE_BUSMASTER_REGISTERS)*c + i, FALSE, FALSE);
                        }

                    }
                }
                for(c=0; c<deviceExtension->NumberChannels; c++) {
                    chan = &deviceExtension->chan[c];
                    if((ChipFlags & VIABAR) && (c==2)) {
                        // Do not setup SATA registers for PATA part
                        for (i=0; i<=IDX_SATA_IO_SZ; i++) {
                            UniataInitIoRes(chan, IDX_SATA_IO+i, 0, FALSE, FALSE);
                        }
                        break;
                    }
                    UniataInitIoRes(chan, IDX_SATA_SStatus,  BaseMemAddress + (c * IoSize), MemIo, FALSE);
                    UniataInitIoRes(chan, IDX_SATA_SError,   BaseMemAddress + 4 + (c * IoSize), MemIo, FALSE);
                    UniataInitIoRes(chan, IDX_SATA_SControl, BaseMemAddress + 8 + (c * IoSize), MemIo, FALSE);

                    chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
                }

            }
        }
        break; }
    case ATA_INTEL_ID: {

        if(!(ChipFlags & UNIATA_SATA)) {
            break;
        }

        /* the intel 31244 needs special care if in DPA mode */
        if(DeviceID == 3200 && // Intel 31244
           pciData->SubClass != PCI_DEV_SUBCLASS_IDE) {

            KdPrint2((PRINT_PREFIX "UniataChipDetect: Intel 31244, DPA mode\n"));
            BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                    0, 0, 0x0c00);
            if(!BaseMemAddress) {
                return STATUS_UNSUCCESSFUL;
            }
            if((*ConfigInfo->AccessRanges)[0].RangeInMemory) {
                KdPrint2((PRINT_PREFIX "MemIo\n"));
                MemIo = TRUE;
            }
            deviceExtension->AltRegMap = TRUE; // inform generic resource allocator
            UniataInitIoResEx(&deviceExtension->BaseIoAddressSATA_0, BaseMemAddress, MemIo, FALSE);

            for(c=0; c<deviceExtension->NumberChannels; c++) {
                ULONG offs = 0x200 + c*0x200;

                chan = &deviceExtension->chan[c];
                for (i=0; i<=IDX_IO1_SZ; i++) {
                    UniataInitIoRes(chan, IDX_BM_IO+i, BaseMemAddress + i*4 + offs, MemIo, FALSE);
                }

                UniataInitSyncBaseIO(chan);

                UniataInitIoRes(chan, IDX_IO1_o_Command, BaseMemAddress + 0x1d + offs, MemIo, FALSE);
                UniataInitIoRes(chan, IDX_IO1_o_Feature, BaseMemAddress + 0x06 + offs, MemIo, FALSE);
                UniataInitIoRes(chan, IDX_IO2_o_Control, BaseMemAddress + 0x29 + offs, MemIo, FALSE);

                UniataInitIoRes(chan, IDX_IO2_AltStatus, BaseMemAddress + 0x28 + offs, MemIo, FALSE);

                UniataInitIoRes(chan, IDX_BM_Command,   BaseMemAddress + 0x70 + offs, MemIo, FALSE);
                UniataInitIoRes(chan, IDX_BM_Status,    BaseMemAddress + 0x72 + offs, MemIo, FALSE);
                UniataInitIoRes(chan, IDX_BM_PRD_Table, BaseMemAddress + 0x74 + offs, MemIo, FALSE);

                UniataInitIoRes(chan, IDX_SATA_SStatus,  BaseMemAddress + 0x100 + offs, MemIo, FALSE);
                UniataInitIoRes(chan, IDX_SATA_SError,   BaseMemAddress + 0x104 + offs, MemIo, FALSE);
                UniataInitIoRes(chan, IDX_SATA_SControl, BaseMemAddress + 0x108 + offs, MemIo, FALSE);

                chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
            }

            break;
        }
        if(deviceExtension->MaxTransferMode >= ATA_SA150) {

            BOOLEAN OrigAHCI = FALSE;

            GetPciConfig1(0x90, tmp8);
            KdPrint2((PRINT_PREFIX "Intel chip config: %x\n", tmp8));
            /* SATA parts can be either compat or AHCI */
            MemIo = FALSE;
            if(ChipFlags & UNIATA_AHCI) {
                OrigAHCI = TRUE;
                if(tmp8 & 0xc0) {
                    //KdPrint2((PRINT_PREFIX "AHCI not supported yet\n"));
                    //return FALSE;
                    KdPrint2((PRINT_PREFIX "try run AHCI\n"));
                    if(ScsiPortConvertPhysicalAddressToUlong((*ConfigInfo->AccessRanges)[5].RangeStart)) {
                        break;
                    }
                    KdPrint2((PRINT_PREFIX "No BAR5, try BM\n"));
                    deviceExtension->HwFlags &= ~UNIATA_AHCI;
                }
                BaseIoAddressBM = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                        4, 0, sizeof(IDE_BUSMASTER_REGISTERS));
                if(BaseIoAddressBM) {
                    KdPrint2((PRINT_PREFIX "Intel BM check at %x\n", BaseIoAddressBM));
                    /* check if we really have valid BM registers */
                    if((*ConfigInfo->AccessRanges)[4].RangeInMemory) {
                        KdPrint2((PRINT_PREFIX "MemIo[4]\n"));
                        MemIo = TRUE;
                    }
                    UniataInitIoResEx(&deviceExtension->BaseIoAddressBM_0, BaseIoAddressBM, MemIo, FALSE);

                    tmp8 = AtapiReadPortEx1(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),IDX_BM_Status);
                    KdPrint2((PRINT_PREFIX "BM status: %x\n", tmp8));
                    /* cleanup */
                    ScsiPortFreeDeviceBase(HwDeviceExtension, (PCHAR)BaseIoAddressBM);
                    UniataInitIoResEx(&deviceExtension->BaseIoAddressBM_0, 0, 0, FALSE);

                    if(tmp8 == 0xff) {
                        KdPrint2((PRINT_PREFIX "invalid BM status, keep AHCI mode\n"));
                        break;
                    }
                }
                KdPrint2((PRINT_PREFIX "Compatible mode, reallocate LUNs\n"));
                deviceExtension->NumberLuns = 2; // we may be in Legacy mode
                if(!UniataAllocateLunExt(deviceExtension, 2)) {
                    KdPrint2((PRINT_PREFIX "can't re-allocate Luns\n"));
                    return STATUS_UNSUCCESSFUL;
                }
            }
            deviceExtension->HwFlags &= ~UNIATA_AHCI;

            MemIo = FALSE;
            /* if BAR(5) is IO it should point to SATA interface registers */
            if(OrigAHCI) {
                /* Skip BAR(5) in compatible mode */
                KdPrint2((PRINT_PREFIX "Ignore BAR5 on compatible\n"));
                BaseMemAddress = 0;
            } else
            if(deviceExtension->DevID == 0x28288086 &&
                pciData->u.type0.SubVendorID == 0x106b) {
                /* Skip BAR(5) on ICH8M Apples, system locks up on access. */
                KdPrint2((PRINT_PREFIX "Ignore BAR5 on ICH8M Apples\n"));
                BaseMemAddress = 0;
            } else {
                BaseMemAddress = AtapiGetIoRange(HwDeviceExtension, ConfigInfo, pciData, SystemIoBusNumber,
                                    5, 0, 0x10);
                if(BaseMemAddress && (*ConfigInfo->AccessRanges)[5].RangeInMemory) {
                    KdPrint2((PRINT_PREFIX "MemIo[5]\n"));
                    MemIo = TRUE;
                }
            }
            UniataInitIoResEx(&deviceExtension->BaseIoAddressSATA_0, BaseMemAddress, MemIo, FALSE);

            for(c=0; c<deviceExtension->NumberChannels; c++) {
                chan = &deviceExtension->chan[c];
                IsPata = FALSE;
                if(ChipFlags & ICH5) {
                    KdPrint2((PRINT_PREFIX "ICH5\n"));
                    if ((tmp8 & 0x04) == 0) {
                        chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
                    } else if ((tmp8 & 0x02) == 0) {
                        if(c != 0) {
                            IsPata = TRUE;
                            //chan->ChannelCtrlFlags |= CTRFLAGS_PATA;
                        }
                    } else if ((tmp8 & 0x02) != 0) {
                        if(c != 1) {
                            IsPata = TRUE;
                            //chan->ChannelCtrlFlags |= CTRFLAGS_PATA;
                        }
                    }
                } else
                if(ChipFlags & I6CH2) {
                    KdPrint2((PRINT_PREFIX "I6CH2\n"));
                    chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
                } else {
                    KdPrint2((PRINT_PREFIX "other Intel\n"));
                    switch(tmp8 & 0x03) {
                    case 2:
                        if(c!=0) {
                            // PATA
                            IsPata = TRUE;
                        }
                        break;
                    case 1:
                        if(c!=1) {
                            // PATA
                            IsPata = TRUE;
                        }
                        break;
                    }
                }

                if(IsPata) {
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA5);
                    KdPrint2((PRINT_PREFIX "PATA part\n"));
                } else {

                    if(!(ChipFlags & ICH7) && BaseMemAddress) {
                        KdPrint2((PRINT_PREFIX "BaseMemAddress[5] -> indexed\n"));
                        UniataInitIoRes(chan, IDX_INDEXED_ADDR,   BaseMemAddress + 0, MemIo, FALSE);
                        UniataInitIoRes(chan, IDX_INDEXED_DATA,   BaseMemAddress + 4, MemIo, FALSE);
                    }
                    if((ChipFlags & ICH5) || BaseMemAddress) {

                        KdPrint2((PRINT_PREFIX "io proc()\n"));
                        // Rather interesting way of register access...
                        ChipType = INTEL_IDX;
                        deviceExtension->HwFlags &= ~CHIPTYPE_MASK;
                        deviceExtension->HwFlags |= ChipType;

                        if(ChipFlags & ICH7) {
                            KdPrint2((PRINT_PREFIX "ICH7 way\n"));
                        }
                        UniataInitIoRes(chan, IDX_SATA_SStatus,  0x200*c + 0, FALSE, TRUE); // this is fake non-zero value
                        UniataInitIoRes(chan, IDX_SATA_SError,   0x200*c + 2, FALSE, TRUE);
                        UniataInitIoRes(chan, IDX_SATA_SControl, 0x200*c + 1, FALSE, TRUE);
                    }
                }

            } // end for()

            // rest of INIT staff is in AtapiChipInit()

        } // ATA_SA150
        break; }
    case ATA_CYRIX_ID:
        /* Cyrix 5530 ATA33 controller */
        if(deviceExtension->DevID == 0x01021078) { 
            ConfigInfo->AlignmentMask = 0x0f;
            deviceExtension->MaximumDmaTransferLength = 63*1024;
        }
        break;
    case ATA_JMICRON_ID:
        /* New JMicron PATA controllers */
        GetPciConfig1(0xdf, tmp8);
        if(tmp8 & 0x40) {
            KdPrint(("  Check JMicron AHCI\n"));
            if(Ata_is_ahci_dev(pciData)) {
                ChipFlags |= UNIATA_AHCI;
                deviceExtension->HwFlags |= UNIATA_AHCI;
            } else {
                KdPrint(("  JMicron PATA\n"));
            }
        } else {
            /* set controller configuration to a combined setup we support */
            SetPciConfig4(0x40, 0x80c0a131);
            SetPciConfig4(0x80, 0x01200000);
            //KdPrint(("  JMicron Combined (not supported yet)\n"));
            //return STATUS_NOT_FOUND;
        }
        break;
    }

    return STATUS_SUCCESS;

} // end UniataChipDetect()


/*
    Do some 'magic staff' for VIA SouthBridge
    This will prevent data losses
*/
VOID
NTAPI
AtapiViaSouthBridgeFixup(
    IN PVOID  HwDeviceExtension,
    IN BUS_DATA_TYPE  BusDataType,
    IN ULONG  SystemIoBusNumber,
    IN ULONG  slotNumber
    )
{
    PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
    PCI_COMMON_CONFIG     pciData;
    ULONG                 funcNumber;
    ULONG                 busDataRead;

    ULONG   VendorID;
    ULONG   DeviceID;
    PCI_SLOT_NUMBER       slotData;
    ULONG dev_id;
    BOOLEAN found = FALSE;

    slotData.u.AsULONG = slotNumber;
    for(funcNumber = 0; funcNumber < PCI_MAX_FUNCTION; funcNumber++) {

        slotData.u.bits.FunctionNumber = funcNumber;

        busDataRead = ScsiPortGetBusData(HwDeviceExtension,
                                         PCIConfiguration,
                                         SystemIoBusNumber,
                                         slotData.u.AsULONG,
                                         &pciData,
                                         PCI_COMMON_HDR_LENGTH);

        if (busDataRead < (ULONG)PCI_COMMON_HDR_LENGTH) {
            continue;
        }

        VendorID  = pciData.VendorID;
        DeviceID  = pciData.DeviceID;
        dev_id = (VendorID | (DeviceID << 16));

        if (dev_id == 0x03051106 ||         /* VIA VT8363 */
            dev_id == 0x03911106 ||         /* VIA VT8371 */
            dev_id == 0x31021106 ||         /* VIA VT8662 */
            dev_id == 0x31121106) {         /* VIA VT8361 */
            UCHAR reg76;

            GetPciConfig1(0x76, reg76);

            if ((reg76 & 0xf0) != 0xd0) {
                SetPciConfig1(0x75, 0x80);
                SetPciConfig1(0x76, (reg76 & 0x0f) | 0xd0);
            }
            found = TRUE;
            break;
        }
    }
    if(!found) {
        deviceExtension->HwFlags &= ~VIABUG;
    }
} // end AtapiViaSouthBridgeFixup()

/*
    Do some 'magic staff' for ROSB SouthBridge
    This will prevent data losses
*/
VOID
NTAPI
AtapiRosbSouthBridgeFixup(
    IN PVOID  HwDeviceExtension,
    IN BUS_DATA_TYPE  BusDataType,
    IN ULONG  SystemIoBusNumber,
    IN ULONG  slotNumber
    )
{
    //PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
    PCI_COMMON_CONFIG     pciData;
    ULONG                 funcNumber;
    ULONG                 busDataRead;

    ULONG   VendorID;
    ULONG   DeviceID;
    PCI_SLOT_NUMBER       slotData;
    ULONG dev_id;
//    BOOLEAN found = FALSE;

    /* locate the ISA part in the southbridge and enable UDMA33 */
    slotData.u.AsULONG = slotNumber;
    for(funcNumber = 0; funcNumber < PCI_MAX_FUNCTION; funcNumber++) {

        slotData.u.bits.FunctionNumber = funcNumber;

        busDataRead = ScsiPortGetBusData(HwDeviceExtension,
                                         PCIConfiguration,
                                         SystemIoBusNumber,
                                         slotData.u.AsULONG,
                                         &pciData,
                                         PCI_COMMON_HDR_LENGTH);

        if (busDataRead < (ULONG)PCI_COMMON_HDR_LENGTH) {
            continue;
        }

        VendorID  = pciData.VendorID;
        DeviceID  = pciData.DeviceID;
        dev_id = (VendorID | (DeviceID << 16));

        if (dev_id == ATA_ROSB4_ISA) {         /*  */
            ChangePciConfig4(0x64, ((a & ~0x00002000) | 0x00004000));
            break;
        }
    }
} // end AtapiRosbSouthBridgeFixup()

/*
    Do some 'magic staff' for ROSB SouthBridge
    This will prevent data losses
*/
VOID
NTAPI
AtapiAliSouthBridgeFixup(
    IN PVOID  HwDeviceExtension,
    IN BUS_DATA_TYPE  BusDataType,
    IN ULONG  SystemIoBusNumber,
    IN ULONG  slotNumber,
    IN ULONG  c
    )
{
    //PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
    PCI_COMMON_CONFIG     pciData;
    ULONG                 funcNumber;
    ULONG                 busDataRead;

    ULONG   VendorID;
    ULONG   DeviceID;
    PCI_SLOT_NUMBER       slotData;
    ULONG dev_id;
//    BOOLEAN found = FALSE;

    /* workaround for datacorruption bug found on at least SUN Blade-100
     * find the ISA function on the southbridge and disable then enable
     * the ATA channel tristate buffer */
    slotData.u.AsULONG = slotNumber;
    for(funcNumber = 0; funcNumber < PCI_MAX_FUNCTION; funcNumber++) {

        slotData.u.bits.FunctionNumber = funcNumber;

        busDataRead = ScsiPortGetBusData(HwDeviceExtension,
                                         PCIConfiguration,
                                         SystemIoBusNumber,
                                         slotData.u.AsULONG,
                                         &pciData,
                                         PCI_COMMON_HDR_LENGTH);

        if (busDataRead < (ULONG)PCI_COMMON_HDR_LENGTH) {
            continue;
        }

        VendorID  = pciData.VendorID;
        DeviceID  = pciData.DeviceID;
        dev_id = (VendorID | (DeviceID << 16));

        if (dev_id == ATA_ALI_1533) {         /* SOUTH */
            ChangePciConfig1(0x58, (a & ~(0x04 << c)));
            ChangePciConfig1(0x58, (a |  (0x04 << c)));
            break;
        }
    }
} // end AtapiRosbSouthBridgeFixup()

ULONG
NTAPI
hpt_cable80(
    IN PHW_DEVICE_EXTENSION deviceExtension,
    IN ULONG channel               // physical channel number (0-1)
    )
{
    PVOID HwDeviceExtension = (PVOID)deviceExtension;
    ULONG slotNumber = deviceExtension->slotNumber;
    ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;

    ULONG ChipType  = deviceExtension->HwFlags & CHIPTYPE_MASK;

    UCHAR reg, val, res;
    PCI_SLOT_NUMBER slotData;

    PHW_CHANNEL chan;
    ULONG  c; // logical channel (for Compatible Mode controllers)

    c = channel - deviceExtension->Channel; // logical channel (for Compatible Mode controllers)
    chan = &deviceExtension->chan[c];

    slotData.u.AsULONG = deviceExtension->slotNumber;

    if(deviceExtension->HwFlags & UNIATA_NO80CHK) {
        KdPrint2((PRINT_PREFIX "UNIATA_NO80CHK\n"));
        return TRUE;
    }

    if(ChipType == HPT374 && slotData.u.bits.FunctionNumber == 1)  {
        reg = channel ? 0x57 : 0x53;
        GetPciConfig1(reg, val);
        SetPciConfig1(reg, val | 0x80);
    }
    else {
        reg = 0x5b;
        GetPciConfig1(reg, val);
        SetPciConfig1(reg, val & 0xfe);
    }
    GetPciConfig1(0x5a, res);
    res = res & (channel ? 0x01 : 0x02);
    SetPciConfig1(reg, val);
    if(chan->Force80pin) {
        KdPrint2((PRINT_PREFIX "Force80pin\n"));
        res = 0;
    }
    KdPrint2((PRINT_PREFIX "hpt_cable80(%d) = %d\n", channel, !res));
    return !res;
} // end hpt_cable80()

/*
ULONG
NTAPI
via_cable80(
    IN PHW_DEVICE_EXTENSION deviceExtension,
    IN ULONG channel               // physical channel number (0-1)
    )
{
    PVOID HwDeviceExtension = (PVOID)deviceExtension;
    ULONG slotNumber = deviceExtension->slotNumber;
    ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;

    ULONG ChipType  = deviceExtension->HwFlags & CHIPTYPE_MASK;

    ULONG reg50;
    ULONG a;
    ULONG i, j;
    BOOLEAN res;

    GetPciConfig1(0x50, reg50);

    switch(ChipType) {
    case VIA133:
        a = 8;
        break;
    case VIA100:
        a = 4;
        break;
    case VIA66:
        a = 2;
        break;
    default:
        return false;
    }

    res = FALSE;
    for (j=0; j>=2; i -= 8) {
        i = (3-(channel*2+j))*8;
        if (((reg50 >> (i & 0x10)) & 8) &&
            ((reg50 >> i) & 0x20) &&
             (((reg50 >> i) & 7) < a)) {

            res |= TRUE; //(1 << (1 - (i >> 4)));
        }
    }
    KdPrint2((PRINT_PREFIX "via_cable80(%d) = %d\n", channel, res));
    return res;

} // end via_cable80()
*/

BOOLEAN
NTAPI
generic_cable80(
    IN PHW_DEVICE_EXTENSION deviceExtension,
    IN ULONG channel,               // physical channel number (0-1)
    IN ULONG pci_reg,
    IN ULONG bit_offs
    )
{
    PVOID HwDeviceExtension = (PVOID)deviceExtension;
    ULONG slotNumber = deviceExtension->slotNumber;
    ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;

    if(deviceExtension->MaxTransferMode <= ATA_UDMA2) {
        KdPrint2((PRINT_PREFIX "generic_cable80(%d, %#x, %d) <= UDMA2\n", channel, pci_reg, bit_offs));
        return FALSE;
    }

    //ULONG ChipType  = deviceExtension->HwFlags & CHIPTYPE_MASK;
    PHW_CHANNEL chan;
    ULONG  c; // logical channel (for Compatible Mode controllers)
    UCHAR tmp8;

    c = channel - deviceExtension->Channel; // logical channel (for Compatible Mode controllers)
    chan = &deviceExtension->chan[c];

    if(chan->Force80pin) {
        KdPrint2((PRINT_PREFIX "Force80pin\n"));
        return TRUE;
    }

    GetPciConfig1(pci_reg, tmp8);
    if(!(tmp8 & (1 << (channel << bit_offs)))) {
        chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
        KdPrint2((PRINT_PREFIX "generic_cable80(%d, %#x, %d) = 0\n", channel, pci_reg, bit_offs));
        return FALSE;
    }

    KdPrint2((PRINT_PREFIX "generic_cable80(%d, %#x, %d) = 1\n", channel, pci_reg, bit_offs));
    return TRUE;
} // end generic_cable80()

VOID
NTAPI
UniAtaReadLunConfig(
    IN PHW_DEVICE_EXTENSION deviceExtension,
    IN ULONG channel,  // physical channel
    IN ULONG DeviceNumber
    )
{
    ULONG tmp32;
    PHW_CHANNEL chan;
    PHW_LU_EXTENSION   LunExt;
    ULONG c;

    c = channel - deviceExtension->Channel; // logical channel

    chan = &deviceExtension->chan[c];
    DeviceNumber = (DeviceNumber % deviceExtension->NumberLuns);
    LunExt = chan->lun[DeviceNumber];

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"ReadCacheEnable", 1);
    LunExt->opt_ReadCacheEnable = tmp32 ? TRUE : FALSE;

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"WriteCacheEnable", 1);
    LunExt->opt_WriteCacheEnable = tmp32 ? TRUE : FALSE;

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"MaxTransferMode", chan->MaxTransferMode);
    LunExt->opt_MaxTransferMode = tmp32;

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"PreferedTransferMode", 0xffffffff);
    LunExt->opt_PreferedTransferMode = tmp32;

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"AdvancedPowerMode", ATA_C_F_APM_CNT_MIN_NO_STANDBY);
    if(tmp32 > 0xfe) {
        tmp32 = 0xfe; // max. performance
    }
    LunExt->opt_AdvPowerMode = (UCHAR)tmp32;

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"AcousticMgmt", ATA_C_F_AAM_CNT_MAX_POWER_SAVE);
    if(tmp32 > 0xfe) {
        tmp32 = 0xfe; // max. performance
    } else
    if(tmp32 < 0x80) {
        tmp32 = 0x0; // disable feature
    }
    LunExt->opt_AcousticMode = (UCHAR)tmp32;

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"StandbyTimer", 0);
    if(tmp32 == 0xfe) {
        tmp32 = 0xff;
    }
    LunExt->opt_StandbyTimer = (UCHAR)tmp32;

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"ReadOnly", 0);
    if(tmp32 <= 2) {
        LunExt->opt_ReadOnly = (UCHAR)tmp32;
    }

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"GeomType", 0xffffffff);
    if(tmp32 > GEOM_MANUAL) {
        tmp32 = 0xffffffff;
    }
    LunExt->opt_GeomType = tmp32;
    if(tmp32 == GEOM_MANUAL) {
        LunExt->DeviceFlags |= DFLAGS_MANUAL_CHS;
        LunExt->opt_GeomType = GEOM_ORIG;
        // assume IdentifyData is already zero-filled
        tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"C", 0);
        LunExt->IdentifyData.NumberOfCurrentCylinders =
        LunExt->IdentifyData.NumberOfCylinders = (USHORT)tmp32;
        tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"H", 0);
        LunExt->IdentifyData.NumberOfCurrentHeads = 
        LunExt->IdentifyData.NumberOfHeads = (USHORT)tmp32;
        tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"S", 0);
        LunExt->IdentifyData.CurrentSectorsPerTrack =
        LunExt->IdentifyData.SectorsPerTrack = (USHORT)tmp32;
        memcpy(LunExt->IdentifyData.ModelNumber, "SEIDH DD", 8); // ESDI HDD
        memcpy(LunExt->IdentifyData.SerialNumber, ".10", 4);
        memcpy(LunExt->IdentifyData.FirmwareRevision, ".10", 4);
        if(!LunExt->IdentifyData.SectorsPerTrack ||
           !LunExt->IdentifyData.NumberOfCylinders ||
           !LunExt->IdentifyData.NumberOfHeads) {
            // ERROR
            KdPrint2((PRINT_PREFIX "Wrong CHS\n"));
            LunExt->opt_GeomType = GEOM_AUTO;
        } else {
            LunExt->DeviceFlags |= DFLAGS_MANUAL_CHS;
            LunExt->opt_GeomType = GEOM_ORIG;
        }
    }

    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"Hidden", 0);
    if(tmp32) {
        LunExt->DeviceFlags |= DFLAGS_HIDDEN;
    }
    tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DeviceNumber, L"Exclude", 0);
    if(tmp32) {
        LunExt->DeviceFlags |= DFLAGS_HIDDEN;
    }

    return;
} // end UniAtaReadLunConfig()

BOOLEAN
NTAPI
AtapiReadChipConfig(
    IN PVOID HwDeviceExtension,
    IN ULONG DeviceNumber,
    IN ULONG channel // physical channel
    )
{
    PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
    PHW_CHANNEL chan;
    ULONG  tmp32;
    ULONG  c; // logical channel (for Compatible Mode controllers)
    ULONG  i;

    KdPrint2((PRINT_PREFIX "AtapiReadChipConfig: devExt %#x\n", deviceExtension ));
    ASSERT(deviceExtension);

    if(channel != CHAN_NOT_SPECIFIED) {
        c = channel - deviceExtension->Channel; // logical channel (for Compatible Mode controllers)
    } else {
        c = CHAN_NOT_SPECIFIED;
    }

    KdPrint2((PRINT_PREFIX "AtapiReadChipConfig: dev %#x, ph chan %d\n", DeviceNumber, channel ));

    if(channel == CHAN_NOT_SPECIFIED) {
        if(AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"ForceSimplex", FALSE)) {
            deviceExtension->simplexOnly = TRUE;
        }
        deviceExtension->opt_AtapiDmaZeroTransfer = FALSE;
        deviceExtension->opt_AtapiDmaControlCmd   = FALSE;
        deviceExtension->opt_AtapiDmaRawRead      = g_opt_AtapiDmaRawRead; 
        deviceExtension->opt_AtapiDmaReadWrite    = TRUE;
    }

    if(c == CHAN_NOT_SPECIFIED) {
        KdPrint2((PRINT_PREFIX "MaxTransferMode (base): %#x\n", deviceExtension->MaxTransferMode));
        for(c=0; c<deviceExtension->NumberChannels; c++) {
            chan = &deviceExtension->chan[c];
            chan->MaxTransferMode = deviceExtension->MaxTransferMode;
            tmp32 = AtapiRegCheckDevValue(deviceExtension, channel, DEVNUM_NOT_SPECIFIED, L"MaxTransferMode", chan->MaxTransferMode);
            if(tmp32 != 0xffffffff) {
                KdPrint2((PRINT_PREFIX "MaxTransferMode (overriden): %#x\n", chan->MaxTransferMode));
                chan->MaxTransferMode = tmp32;
            }
            tmp32 = AtapiRegCheckDevValue(deviceExtension, c, DEVNUM_NOT_SPECIFIED, L"Force80pin", FALSE);
            chan->Force80pin = tmp32 ? TRUE : FALSE;
            if(chan->Force80pin) {
                KdPrint2((PRINT_PREFIX "Force80pin on chip\n"));
                deviceExtension->HwFlags |= UNIATA_NO80CHK;
            }

            //UniAtaReadLunConfig(deviceExtension, c, 0);
            //UniAtaReadLunConfig(deviceExtension, c, 1);
        }

        deviceExtension->opt_AtapiDmaZeroTransfer =
            AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"AtapiDmaZeroTransfer", deviceExtension->opt_AtapiDmaZeroTransfer) ?
               TRUE : FALSE;

        deviceExtension->opt_AtapiDmaControlCmd =
            AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"AtapiDmaControlCmd", deviceExtension->opt_AtapiDmaControlCmd) ?
               TRUE : FALSE;

        deviceExtension->opt_AtapiDmaRawRead =
            AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"AtapiDmaRawRead", deviceExtension->opt_AtapiDmaRawRead) ?
               TRUE : FALSE;

        deviceExtension->opt_AtapiDmaReadWrite =
            AtapiRegCheckDevValue(deviceExtension, CHAN_NOT_SPECIFIED, DEVNUM_NOT_SPECIFIED, L"AtapiDmaReadWrite", deviceExtension->opt_AtapiDmaReadWrite) ?
               TRUE : FALSE;

    } else {
        chan = &deviceExtension->chan[c];
        chan->MaxTransferMode = deviceExtension->MaxTransferMode;
        tmp32 = AtapiRegCheckDevValue(deviceExtension, c, DEVNUM_NOT_SPECIFIED, L"MaxTransferMode", chan->MaxTransferMode);
        if(tmp32 != 0xffffffff) {
            KdPrint2((PRINT_PREFIX "MaxTransferMode (overriden): %#x\n", chan->MaxTransferMode));
            chan->MaxTransferMode = tmp32;
        }
        tmp32 = AtapiRegCheckDevValue(deviceExtension, c, DEVNUM_NOT_SPECIFIED, L"ReorderEnable", TRUE);
        chan->UseReorder = tmp32 ? TRUE : FALSE;

        tmp32 = AtapiRegCheckDevValue(deviceExtension, c, DEVNUM_NOT_SPECIFIED, L"Force80pin", FALSE);
        chan->Force80pin = tmp32 ? TRUE : FALSE;
        if(chan->Force80pin) {
            KdPrint2((PRINT_PREFIX "Force80pin on channel\n"));
        }

        for(i=0; i<deviceExtension->NumberLuns; i++) {
            UniAtaReadLunConfig(deviceExtension, channel, i);
        }
    }

    return TRUE;
} // end AtapiReadChipConfig()

BOOLEAN
NTAPI
AtapiChipInit(
    IN PVOID HwDeviceExtension,
    IN ULONG DeviceNumber,
    IN ULONG channel // logical channel
    )
{
    PHW_DEVICE_EXTENSION deviceExtension = (PHW_DEVICE_EXTENSION)HwDeviceExtension;
    ULONG slotNumber = deviceExtension->slotNumber;
    ULONG SystemIoBusNumber = deviceExtension->SystemIoBusNumber;
    ULONG VendorID =  deviceExtension->DevID        & 0xffff;
    ULONG DeviceID = (deviceExtension->DevID >> 16) & 0xffff;
    ULONG RevID    =  deviceExtension->RevID;
//    ULONG i;
//    BUSMASTER_CONTROLLER_INFORMATION_BASE* DevTypeInfo;
    ULONG ChipType  = deviceExtension->HwFlags & CHIPTYPE_MASK;
    ULONG ChipFlags = deviceExtension->HwFlags & CHIPFLAG_MASK;
    PHW_CHANNEL chan;
    UCHAR  tmp8;
    USHORT tmp16;
    ULONG  tmp32;
    ULONG  c; // logical channel (for Compatible Mode controllers)
    BOOLEAN CheckCable = FALSE;
    BOOLEAN GlobalInit = FALSE;
    //ULONG BaseIoAddress;

    switch(channel) {
    case CHAN_NOT_SPECIFIED_CHECK_CABLE:
        CheckCable = TRUE;
        /* FALLTHROUGH */
    case CHAN_NOT_SPECIFIED:
        c = CHAN_NOT_SPECIFIED;
        GlobalInit = TRUE;
        break;
    default:
        //c = channel - deviceExtension->Channel; // logical channel (for Compatible Mode controllers)
        c = channel;
        channel += deviceExtension->Channel;
    }

    KdPrint2((PRINT_PREFIX "AtapiChipInit: dev %#x, ph chan %d, c %d\n", DeviceNumber, channel, c));

    KdPrint2((PRINT_PREFIX "HwFlags: %#x\n", deviceExtension->HwFlags));
    KdPrint2((PRINT_PREFIX "VendorID/DeviceID/Rev %#x/%#x/%#x\n", VendorID, DeviceID, RevID));

    if(deviceExtension->UnknownDev) {
        KdPrint2((PRINT_PREFIX "  Unknown chip\n" ));
        //return TRUE;
        VendorID = 0xffffffff;
    }


    if(ChipFlags & UNIATA_AHCI) {
        /* if BAR(5) is IO it should point to SATA interface registers */
        if(!deviceExtension->BaseIoAHCI_0.Addr) {
            KdPrint2((PRINT_PREFIX "  !BaseIoAHCI_0, exiting\n" ));
            return FALSE;
        }
        if(c == CHAN_NOT_SPECIFIED) {
            return UniataAhciInit(HwDeviceExtension);
        } else
        if(c<deviceExtension->NumberChannels) {
            KdPrint2((PRINT_PREFIX "  AHCI single channel init\n" ));
            UniataAhciReset(HwDeviceExtension, c);
            return TRUE;
        } else {
            KdPrint2((PRINT_PREFIX "  AHCI non-existent channel\n" ));
            return FALSE;
        }
    }

    if((WinVer_Id() > WinVer_NT) &&
       GlobalInit &&
       deviceExtension->MasterDev) {
        PCI_COMMON_CONFIG pciData;
        ULONG busDataRead;

        KdPrint2((PRINT_PREFIX "  re-enable IO resources of MasterDev\n" ));

        busDataRead = HalGetBusData
                      //ScsiPortGetBusData
                                   (
                                    //HwDeviceExtension,
                                    PCIConfiguration, SystemIoBusNumber, slotNumber,
                                    &pciData, PCI_COMMON_HDR_LENGTH);
        if(busDataRead == PCI_COMMON_HDR_LENGTH) {
            UniataEnableIoPCI(SystemIoBusNumber, slotNumber, &pciData);
        } else {
            KdPrint2((PRINT_PREFIX "  re-enable IO resources of MasterDev FAILED\n" ));
        }
    }

    switch(VendorID) {
//  case ATA_ACARD_ID:
//      break;
    case ATA_ACER_LABS_ID:
        if(ChipFlags & UNIATA_SATA) {
            if(c == CHAN_NOT_SPECIFIED) {
                for(c=0; c<deviceExtension->NumberChannels; c++) {
                    chan = &deviceExtension->chan[c];
                    chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
                    /* the southbridge might need the data corruption fix */
                    if(RevID == 0xc2 || RevID == 0xc3) {
                        AtapiAliSouthBridgeFixup(HwDeviceExtension, PCIConfiguration,
                                                 SystemIoBusNumber, slotNumber, c);
                    }
                }
                /* enable PCI interrupt */
                ChangePciConfig2(offsetof(PCI_COMMON_CONFIG, Command), (a & ~0x0400));
            }
        } else
        if(ChipFlags & ALINEW) {
            if(c == CHAN_NOT_SPECIFIED) {
                /* use device interrupt as byte count end */
                ChangePciConfig1(0x4a, (a | 0x20));
                /* enable cable detection and UDMA support on newer chips, rev < 0xc7 */
                if(RevID < 0xc7) {
                    ChangePciConfig1(0x4b, (a | 0x09));
                }

                /* enable ATAPI UDMA mode */
                ChangePciConfig1(0x53, (a | (RevID >= 0xc7 ? 0x03 : 0x01)));

            } else {
                // check 80-pin cable
                generic_cable80(deviceExtension, channel, 0x4a, 0);
            }
        } else {
            if(c == CHAN_NOT_SPECIFIED) {
                /* deactivate the ATAPI FIFO and enable ATAPI UDMA */
                ChangePciConfig1(0x53, (a | 0x03));
            } else {
                // ATAPI DMA R/O
                deviceExtension->chan[c].ChannelCtrlFlags |= CTRFLAGS_DMA_RO;
            }
        }
        break;
    case ATA_AMD_ID:
        if(c == CHAN_NOT_SPECIFIED) {
            /* set prefetch, postwrite */
            if(ChipFlags & AMDBUG) {
                ChangePciConfig1(0x41, (a & 0x0f));
            } else {
                ChangePciConfig1(0x41, (a | 0xf0));
            }
        }
        if(deviceExtension->MaxTransferMode < ATA_UDMA2)
            break;
        // check 80-pin cable
        if(!(ChipFlags & UNIATA_NO80CHK)) {
            if(c == CHAN_NOT_SPECIFIED) {
                // do nothing
            } else {
                generic_cable80(deviceExtension, channel, 0x42, 0);
            }
        }
        break;
    case ATA_HIGHPOINT_ID:

        if(c == CHAN_NOT_SPECIFIED) {

            if(ChipFlags & HPTOLD) {
                /* turn off interrupt prediction */
                ChangePciConfig1(0x51, (a & ~0x80));
            } else {
                /* turn off interrupt prediction */
                ChangePciConfig1(0x51, (a & ~0x03));
                ChangePciConfig1(0x55, (a & ~0x03));
                /* turn on interrupts */
                ChangePciConfig1(0x5a, (a & ~0x10));
                /* set clocks etc */
                if(ChipType < HPT372) {
                    SetPciConfig1(0x5b, 0x22);
                } else {
                    ChangePciConfig1(0x5b, ((a & 0x01) | 0x20));
                }
            }

        } else {
            // check 80-pin cable
            chan = &deviceExtension->chan[c];
            if(!hpt_cable80(deviceExtension, channel)) {
                chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
            }
        }
        break;
    case ATA_INTEL_ID: {
        BOOLEAN IsPata;
        USHORT reg54;
        if(ChipFlags & UNIATA_SATA) {

            KdPrint2((PRINT_PREFIX "Intel SATA\n"));
            if(ChipFlags & UNIATA_AHCI) {
                KdPrint2((PRINT_PREFIX "Do nothing for AHCI\n"));
                /* enable PCI interrupt */
                ChangePciConfig2(offsetof(PCI_COMMON_CONFIG, Command), (a & ~0x0400));
                break;
            }
            if(c == CHAN_NOT_SPECIFIED) {
                KdPrint2((PRINT_PREFIX "Base init\n"));
                /* force all ports active "the legacy way" */
                ChangePciConfig2(0x92, (a | 0x0f));

                if(deviceExtension->BaseIoAddressSATA_0.Addr && (ChipFlags & ICH7)) {
                    /* Set SCRAE bit to enable registers access. */
                    ChangePciConfig4(0x94, (a | (1 << 9)));
                    /* Set Ports Implemented register bits. */
                    AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0), 0x0c,
                         AtapiReadPortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0), 0x0c) | 0x0f);
                }
                /* enable PCI interrupt */
                ChangePciConfig2(offsetof(PCI_COMMON_CONFIG, Command), (a & ~0x0400));

            } else {

                KdPrint2((PRINT_PREFIX "channel init\n"));

                GetPciConfig1(0x90, tmp8);
                KdPrint2((PRINT_PREFIX "reg 90: %x, init lun map\n", tmp8));

                KdPrint2((PRINT_PREFIX "chan %d\n", c));
                chan = &deviceExtension->chan[c];
                IsPata = FALSE;
                if(ChipFlags & ICH5) {
                    KdPrint2((PRINT_PREFIX "ICH5\n"));
                    if ((tmp8 & 0x04) == 0) {
                        chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
                        chan->lun[0]->SATA_lun_map = (tmp8 & 0x01) ^ c;
                        chan->lun[1]->SATA_lun_map = 0;
                    } else if ((tmp8 & 0x02) == 0) {
                        if(c == 0) {
                            chan->lun[0]->SATA_lun_map = (tmp8 & 0x01) ? 1 : 0;
                            chan->lun[1]->SATA_lun_map = (tmp8 & 0x01) ? 0 : 1;
                        } else {
                            IsPata = TRUE;
                            //chan->ChannelCtrlFlags |= CTRFLAGS_PATA;
                        }
                    } else if ((tmp8 & 0x02) != 0) {
                        if(c == 1) {
                            chan->lun[0]->SATA_lun_map = (tmp8 & 0x01) ? 1 : 0;
                            chan->lun[1]->SATA_lun_map = (tmp8 & 0x01) ? 0 : 1;
                        } else {
                            IsPata = TRUE;
                            //chan->ChannelCtrlFlags |= CTRFLAGS_PATA;
                        }
                    }
                } else
                if(ChipFlags & I6CH2) {
                    KdPrint2((PRINT_PREFIX "I6CH2\n"));
                    chan->ChannelCtrlFlags |= CTRFLAGS_NO_SLAVE;
                    chan->lun[0]->SATA_lun_map = c ? 0 : 1;
                    chan->lun[1]->SATA_lun_map = 0;
                } else {
                    KdPrint2((PRINT_PREFIX "other Intel\n"));
                    switch(tmp8 & 0x03) {
                    case 0:
                        KdPrint2((PRINT_PREFIX "0 -> %d/%d\n", 0+c, 2+c));
                        chan->lun[0]->SATA_lun_map = 0+c;
                        chan->lun[1]->SATA_lun_map = 2+c;
                        break;
                    case 2:
                        if(c==0) {
                            KdPrint2((PRINT_PREFIX "2 -> %d/%d\n", 0, 2));
                            chan->lun[0]->SATA_lun_map = 0;
                            chan->lun[1]->SATA_lun_map = 2;
                        } else {
                            // PATA
                            KdPrint2((PRINT_PREFIX "PATA\n"));
                            IsPata = TRUE;
                        }
                        break;
                    case 1:
                        if(c==1) {
                            KdPrint2((PRINT_PREFIX "2 -> %d/%d\n", 1, 3));
                            chan->lun[0]->SATA_lun_map = 1;
                            chan->lun[1]->SATA_lun_map = 3;
                        } else {
                            // PATA
                            KdPrint2((PRINT_PREFIX "PATA\n"));
                            IsPata = TRUE;
                        }
                        break;
                    }
                }

                if(IsPata) {
                    KdPrint2((PRINT_PREFIX "PATA part\n"));
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA5);
                }

                if(ChipType == INTEL_IDX) {
                    KdPrint2((PRINT_PREFIX "io indexed\n"));
                    //for(c=0; c<deviceExtension->NumberChannels; c++) {
                        chan = &deviceExtension->chan[c];
                        UniataSataWritePort4(chan, IDX_SATA_SError, 0xffffffff, 0);
                        if(!(chan->ChannelCtrlFlags & CTRFLAGS_NO_SLAVE)) {
                            UniataSataWritePort4(chan, IDX_SATA_SError, 0xffffffff, 1);
                        }
                    //}
                }
            }

            break;
        }
        if(deviceExtension->MaxTransferMode <= ATA_UDMA2)
            break;
        // check 80-pin cable
        if(c == CHAN_NOT_SPECIFIED) {
            // do nothing
        } else {
            chan = &deviceExtension->chan[c];
            GetPciConfig2(0x54, reg54);
            KdPrint2((PRINT_PREFIX " intel 80-pin check (reg54=%x)\n", reg54));
            if(deviceExtension->HwFlags & UNIATA_NO80CHK) {
                KdPrint2((PRINT_PREFIX " No check (administrative)\n"));
                if(chan->Force80pin) {
                    KdPrint2((PRINT_PREFIX "Force80pin\n"));
                }
            } else
            if(reg54 == 0x0000 || reg54 == 0xffff) {
                KdPrint2((PRINT_PREFIX " check failed (not supported)\n"));
            } else
            if( ((reg54 >> (channel*2)) & 30) == 0) {
                KdPrint2((PRINT_PREFIX " intel 40-pin\n"));
                chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
            }
        }
        break; }
    case ATA_NVIDIA_ID: {
        if(ChipFlags & UNIATA_SATA) {
            if(c == CHAN_NOT_SPECIFIED) {
                ULONG offs = (ChipFlags & NV4OFF) ? 0x0440 : 0x0010;
                /* enable control access */
                ChangePciConfig1(0x50, (a | 0x04));
                /* MCP55 seems to need some time to allow r_res2 read. */
                AtapiStallExecution(10);
                KdPrint2((PRINT_PREFIX "BaseIoAddressSATA_0=%x\n", deviceExtension->BaseIoAddressSATA_0.Addr));
                if(ChipFlags & NVQ) {
                    KdPrint2((PRINT_PREFIX "Disable NCQ\n"));
                    tmp32 = AtapiReadPortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),0x0400);
                    KdPrint2((PRINT_PREFIX "MODE=%#x\n", tmp32));
                    if(tmp32 & ~0xfffffff9) {
                        AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),0x0400, 
                             tmp32 & 0xfffffff9);
                    }
                    ChipFlags &= ~NVQ;
                    deviceExtension->HwFlags = ChipFlags;
                }
                if(ChipFlags & NVQ) {
                    /* disable  ECO 398 */
                    ChangePciConfig1(0x7f, (a & ~(1 << 7)));

                    KdPrint2((PRINT_PREFIX "Enable NCQ\n"));
                    /* enable NCQ support */
                    AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),0x0400, 
                         tmp32 | ~0x00000006);

                    /* clear interrupt status */
                    AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),offs, 0x00ff00ff);
                    /* enable device and PHY state change interrupts */
                    AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),offs+4, 0x000d000d);
                } else {
                    /* clear interrupt status */
                    AtapiWritePortEx1(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),offs, 0xff);
                    /* enable device and PHY state change interrupts */
                    AtapiWritePortEx1(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),offs+1, 0xdd);
                }
                /* enable PCI interrupt */
                ChangePciConfig2(offsetof(PCI_COMMON_CONFIG, Command), (a & ~0x0400));
            } else {
                //UniataSataPhyEnable(HwDeviceExtension, c);
            }
        } else {
            //UCHAR reg52;
            
            if(c == CHAN_NOT_SPECIFIED) {
                /* set prefetch, postwrite */
                ChangePciConfig1(0x51, (a & 0x0f));
            } else {
                // check 80-pin cable
                generic_cable80(deviceExtension, channel, 0x52, 1);
/*                chan = &deviceExtension->chan[c];
                GetPciConfig1(0x52, reg52);
                if( !((reg52 >> (channel*2)) & 0x01)) {
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
                }*/
            }
        }
        break; }
    case ATA_PROMISE_ID: {
        USHORT Reg50;
        switch(ChipType) {
        case PRNEW:
            /* setup clocks */
            if(c == CHAN_NOT_SPECIFIED) {
//            ATA_OUTB(ctlr->r_res1, 0x11, ATA_INB(ctlr->r_res1, 0x11) | 0x0a);
                AtapiWritePortEx1(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11, 
                    AtapiReadPortEx1(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x11) | 0x0a );
            }
            /* FALLTHROUGH */
        case PROLD:
            /* enable burst mode */
//            ATA_OUTB(ctlr->r_res1, 0x1f, ATA_INB(ctlr->r_res1, 0x1f) | 0x01);
            if(c == CHAN_NOT_SPECIFIED) {
                AtapiWritePortEx1(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x1f, 
                    AtapiReadPortEx1(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),0x1f) | 0x01 );
            } else {
                // check 80-pin cable
                chan = &deviceExtension->chan[c];
                GetPciConfig2(0x50, Reg50);
                if(Reg50 & (1 << (channel+10))) {
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
                }
            }
            break;
        case PRTX:
            if(c == CHAN_NOT_SPECIFIED) {
                // do nothing
            } else {
                // check 80-pin cable
                chan = &deviceExtension->chan[c];
                AtapiWritePort1(chan, IDX_BM_DeviceSpecific0, 0x0b);
                if(AtapiReadPort1(chan, IDX_BM_DeviceSpecific1) & 0x04) {
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
                }
            }
            break;
        case PRMIO:
            if(c == CHAN_NOT_SPECIFIED) {
                /* clear SATA status and unmask interrupts */
                AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0),
                    (ChipFlags & PRG2) ? 0x60 : 0x6c, 0x000000ff);
                if(ChipFlags & UNIATA_SATA) {
                    /* enable "long burst length" on gen2 chips */
                    AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0), 0x44, 
                        AtapiReadPortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressBM_0), 0x44) | 0x2000);
                }
            } else {
                chan = &deviceExtension->chan[c];
                AtapiWritePort4(chan, IDX_BM_Command, 
                    (AtapiReadPort4(chan, IDX_BM_Command) & ~0x00000f8f) | channel );
                AtapiWritePort4(chan, IDX_BM_DeviceSpecific0, 0x00000001);
                // check 80-pin cable
                if(chan->MaxTransferMode < ATA_SA150 &&
                   (AtapiReadPort4(chan, IDX_BM_Command) & 0x01000000)) {
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
                }
            }
            break;
        }
        break; }
    case ATA_SERVERWORKS_ID:
        if(c == CHAN_NOT_SPECIFIED) {
            if(ChipType == SWKS33) {
                AtapiRosbSouthBridgeFixup(HwDeviceExtension, PCIConfiguration,
                                         SystemIoBusNumber, slotNumber);
            } else {
                ChangePciConfig1(0x5a, ((a & ~0x40) | ((ChipType == SWKS100) ? 0x03 : 0x02)));
            }
        }
        break;
    case ATA_ATI_ID:
        if(ChipType == SIIMIO) {
            KdPrint2((PRINT_PREFIX "ATI New\n"));
            // fall to SiI
        } else {
            KdPrint2((PRINT_PREFIX "ATI\n"));
            break;
        }
        /* FALLTHROUGH */
    case ATA_SILICON_IMAGE_ID:
  /*      if(ChipFlags & SIIENINTR) {
            SetPciConfig1(0x71, 0x01);
        }*/
        switch(ChipType) {
        case SIIMIO: {

            KdPrint2((PRINT_PREFIX "SII\n"));
            USHORT Reg79;

            if(c == CHAN_NOT_SPECIFIED) {
                if(ChipFlags & SIISETCLK)  {
                    KdPrint2((PRINT_PREFIX "SIISETCLK\n"));
                    GetPciConfig1(0x8a, tmp8);
                    if ((tmp8 & 0x30) != 0x10)
                        ChangePciConfig1(0x8a, (a & 0xcf) | 0x10);
                    GetPciConfig1(0x8a, tmp8);
                    if ((tmp8 & 0x30) != 0x10) {
                        KdPrint2((PRINT_PREFIX "Sil 0680 could not set ATA133 clock\n"));
                        deviceExtension->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA5);
                    }
                }
            }
            if(deviceExtension->MaxTransferMode < ATA_SA150) {
                // check 80-pin cable
                if(c == CHAN_NOT_SPECIFIED) {
                    // do nothing
                } else {
                    KdPrint2((PRINT_PREFIX "Check UDMA66 cable\n"));
                    chan = &deviceExtension->chan[c];
                    GetPciConfig2(0x79, Reg79);
                    if(Reg79 & (channel ? 0x02 : 0x01)) {
                        chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
                    }
                }
            } else {
                ULONG unit01 = (c & 1);
                ULONG unit10 = (c & 2);
                /* enable/disable PHY state change interrupt */
                if(c == CHAN_NOT_SPECIFIED) {
                    for(c=0; c<deviceExtension->NumberChannels; c++) {
                        unit01 = (c & 1);
                        unit10 = (c & 2);
                        if(ChipFlags & SIINOSATAIRQ) {
                            KdPrint2((PRINT_PREFIX "Disable broken SATA intr on c=%x\n", c));
                            AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0), 0x148 + (unit01 << 7) + (unit10 << 8),0);
                        }
                    }
                } else {
                    if(ChipFlags & SIINOSATAIRQ) {
                        KdPrint2((PRINT_PREFIX "Disable broken SATA intr on c=%x\n", c));
                        AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0), 0x148 + (unit01 << 7) + (unit10 << 8),0);
                    } else {
                        KdPrint2((PRINT_PREFIX "Enable SATA intr on c=%x\n", c));
                        AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0), 0x148 + (unit01 << 7) + (unit10 << 8),(1 << 16));
                    }
                }
            }
            if(c == CHAN_NOT_SPECIFIED) {
                /* enable interrupt as BIOS might not */
                ChangePciConfig1(0x8a, (a & 0x3f));
                // Enable 3rd and 4th channels
                if (ChipFlags & SII4CH) {
                    KdPrint2((PRINT_PREFIX "SII4CH\n"));
                    AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),0x0200, 0x00000002);
                }
            } else {
                chan = &deviceExtension->chan[c];
                /* dont block interrupts */
                //ChangePciConfig4(0x48, (a & ~0x03c00000));
                /*tmp32 =*/ AtapiReadPortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),0x48);
                AtapiWritePortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),0x48, (1 << 22) << c);
                // flush
                /*tmp32 =*/ AtapiReadPortEx4(NULL, (ULONGIO_PTR)(&deviceExtension->BaseIoAddressSATA_0),0x48);

                /* Initialize FIFO PCI bus arbitration */
                GetPciConfig1(offsetof(PCI_COMMON_CONFIG, CacheLineSize), tmp8);
                if(tmp8) {
                    KdPrint2((PRINT_PREFIX "SII: CacheLine=%d\n", tmp8));
                    tmp8 = (tmp8/8)+1;
                    AtapiWritePort2(chan, IDX_BM_DeviceSpecific1, ((USHORT)tmp8) << 8 | tmp8);
    		} else {
                    KdPrint2((PRINT_PREFIX "SII: CacheLine=0 !!!\n"));
    		}
            }
            break; }

        case SIICMD: {

            KdPrint2((PRINT_PREFIX "SII_CMD\n"));
            if(c == CHAN_NOT_SPECIFIED) {
                /* Setup interrupts. */
                SetPciConfig1(0x71, 0x01);

    /*            GetPciConfig1(0x8a, tmp8);
                tmp8 &= ~(0x30);
                SetPciConfig1(0x71, tmp8);*/

                /* Use MEMORY READ LINE for reads.
                 * NOTE: Although not mentioned in the PCI0646U specs,
                 *       these bits are write only and won't be read
                 *       back as set or not.  The PCI0646U2 specs clarify
                 *       this point.
                 */
    /*            tmp8 |= 0x02;
                SetPciConfig1(0x71, tmp8);
    */
                /* Set reasonable active/recovery/address-setup values. */
                SetPciConfig1(0x53, 0x40);
                SetPciConfig1(0x54, 0x3f);
                SetPciConfig1(0x55, 0x40);
                SetPciConfig1(0x56, 0x3f);
                SetPciConfig1(0x57, 0x1c);
                SetPciConfig1(0x58, 0x3f);
                SetPciConfig1(0x5b, 0x3f);
            }

            break; }
        case ATI700:
            KdPrint2((PRINT_PREFIX "ATI700\n"));
            if(c == 0 && !(ChipFlags & UNIATA_AHCI)) {
                KdPrint2((PRINT_PREFIX "IXP700 PATA\n"));
                chan = &deviceExtension->chan[c];
                chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA5);
            }
            break;
        } /* switch(ChipType) */
        break;
    case ATA_SIS_ID:
        if(c == CHAN_NOT_SPECIFIED) {
            switch(ChipType) {
            case SIS33:
                break;
            case SIS66:
            case SIS100OLD:
                ChangePciConfig1(0x52, (a & ~0x04));
                break;
            case SIS100NEW:
            case SIS133OLD:
                ChangePciConfig1(0x49, (a & ~0x01));
                break;
            case SIS133NEW:
                ChangePciConfig2(0x50, (a | 0x0008));
                ChangePciConfig2(0x52, (a | 0x0008));
                break;
            case SISSATA:
                ChangePciConfig2(0x04, (a & ~0x0400));
                break;
            }
        }
        if(deviceExtension->HwFlags & UNIATA_SATA) {
            // do nothing for SATA
        } else
        if(ChipType == SIS133NEW) {
            // check 80-pin cable
            if(c == CHAN_NOT_SPECIFIED) {
                // do nothing
            } else {
                chan = &deviceExtension->chan[c];
                GetPciConfig2(channel ? 0x52 : 0x50, tmp16);
                if(tmp16 & 0x8000) {
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
                }
            }
        } else {
            // check 80-pin cable
            if(c == CHAN_NOT_SPECIFIED) {
                // do nothing
            } else {
                chan = &deviceExtension->chan[c];
                GetPciConfig1(48, tmp8);
                if(tmp8 & (0x10 << channel)) {
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
                }
            }
        }
        break;
    case ATA_VIA_ID:

/*        if(ChipFlags & (UNIATA_SATA | UNIATA_AHCI | VIASATA) {
            break;
        }*/
        if(c == CHAN_NOT_SPECIFIED) {
            /* prepare for ATA-66 on the 82C686a and 82C596b */
            if(ChipFlags & VIACLK) {
                ChangePciConfig4(0x50, (a | 0x030b030b));
            }
            // no init for SATA
            if(ChipFlags & (UNIATA_SATA | VIASATA)) {
                /* enable PCI interrupt */
                ChangePciConfig2(offsetof(PCI_COMMON_CONFIG, Command), (a & ~0x0400));

               /*
                * vt6420/1 has problems talking to some drives.  The following
                * is based on the fix from Joseph Chan <JosephChan@via.com.tw>.
                *
                * When host issues HOLD, device may send up to 20DW of data
                * before acknowledging it with HOLDA and the host should be
                * able to buffer them in FIFO.  Unfortunately, some WD drives
                * send upto 40DW before acknowledging HOLD and, in the
                * default configuration, this ends up overflowing vt6421's
                * FIFO, making the controller abort the transaction with
                * R_ERR.
                *
                * Rx52[2] is the internal 128DW FIFO Flow control watermark
                * adjusting mechanism enable bit and the default value 0
                * means host will issue HOLD to device when the left FIFO
                * size goes below 32DW.  Setting it to 1 makes the watermark
                * 64DW.
                *
                * http://www.reactos.org/bugzilla/show_bug.cgi?id=6500
                */

                if(DeviceID == 0x3149 || DeviceID == 0x3249) {    //vt6420 or vt6421
                    KdPrint2((PRINT_PREFIX "VIA 642x FIFO\n"));
                    ChangePciConfig1(0x52, a | (1 << 2));
                }

                break;
            }

            /* the southbridge might need the data corruption fix */
            if(ChipFlags & VIABUG) {
                AtapiViaSouthBridgeFixup(HwDeviceExtension, PCIConfiguration,
                                         SystemIoBusNumber, slotNumber);
            }
            /* set prefetch, postwrite */
            if(ChipType != VIA133) {
                ChangePciConfig1(0x41, (a | 0xf0));
            }

            /* set fifo configuration half'n'half */
            ChangePciConfig1(0x43, ((a & ((ChipFlags & VIAPRQ) ? 0x80 : 0x90)) | 0x2a));

            /* set status register read retry */
            ChangePciConfig1(0x44, (a | 0x08));

            /* set DMA read & end-of-sector fifo flush */
            ChangePciConfig1(0x46, ((a & 0x0c) | 0xf0));

            /* set sector size */
            SetPciConfig2(0x60, DEV_BSIZE);
            SetPciConfig2(0x68, DEV_BSIZE);
        } else {

            chan = &deviceExtension->chan[c];
            // no init for SATA
            if(ChipFlags & (UNIATA_SATA | VIASATA)) {
                if((ChipFlags & VIABAR) && (c >= 2)) {
                    // this is PATA channel
                    chan->MaxTransferMode = ATA_UDMA5;
                    break;
                }
                UniataSataWritePort4(chan, IDX_SATA_SError, 0xffffffff, 0);
                break;
            }
/*
            // check 80-pin cable
            if(!via_cable80(deviceExtension, channel)) {
                chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
            }
*/
        }

        break;

    case ATA_ITE_ID:
        if(ChipType == ITE_33 || ChipType == ITE_133_NEW) {
            break;
        }
        if(ChipType == ITE_133) {
            if(c == CHAN_NOT_SPECIFIED) {
                /* set PCI mode and 66Mhz reference clock */
                ChangePciConfig1(0x50, a & ~0x83);

                /* set default active & recover timings */
                SetPciConfig1(0x54, 0x31);
                SetPciConfig1(0x56, 0x31);
            } else {
                // check 80-pin cable
                GetPciConfig2(0x40, tmp16);
                chan = &deviceExtension->chan[c];
                if(!(tmp16 & (channel ? 0x08 : 0x04))) {
                    chan->MaxTransferMode = min(deviceExtension->MaxTransferMode, ATA_UDMA2);
                }
            }
        } else
        if(ChipType == ITE_133_NEW) {
        }
        break;
    case ATA_CYRIX_ID:
        KdPrint2((PRINT_PREFIX "Cyrix\n"));
        if(ChipType == CYRIX_OLD) {
            if(c == CHAN_NOT_SPECIFIED) {
                GetPciConfig1(0x60, tmp8);
                if(!(tmp8 & 0x40)) {
                    KdPrint2((PRINT_PREFIX "Enable DMA\n"));
                    tmp8 |= 0x40;
                    SetPciConfig1(0x60, tmp8);
                }
            }
        }
        break;
    default:
        if(c != CHAN_NOT_SPECIFIED) {
            // We don't know how to check for 80-pin cable on unknown controllers.
            // Later we shall check bit in IDENTIFY structure, but it is not reliable way.
            // So, leave this flag to use as hint in error recovery procedures
            KdPrint2((PRINT_PREFIX "UNIATA_NO80CHK\n"));
            deviceExtension->HwFlags |= UNIATA_NO80CHK;
        }
        break;
    }

    // In all places separate channels are inited after common controller init
    // The only exception is probe. But there we may need info about 40/80 pin and MaxTransferRate
    if(CheckCable && !(ChipFlags & (UNIATA_NO80CHK | UNIATA_SATA))) {
        for(c=0; c<deviceExtension->NumberChannels; c++) {
            AtapiChipInit(HwDeviceExtension, DeviceNumber, c);
        }
    }

    return TRUE;
} // end AtapiChipInit()

VOID
NTAPI
UniataInitMapBM(
    IN PHW_DEVICE_EXTENSION deviceExtension,
    IN PIDE_BUSMASTER_REGISTERS BaseIoAddressBM_0,
    IN BOOLEAN MemIo
    )
{
    PHW_CHANNEL chan;
    ULONG c;
    ULONG i;

    if(!BaseIoAddressBM_0) {
        MemIo = FALSE;
    }
    for(c=0; c<deviceExtension->NumberChannels; c++) {
        chan = &deviceExtension->chan[c];
        for (i=0; i<IDX_BM_IO_SZ; i++) {
            UniataInitIoRes(chan, IDX_BM_IO+i, BaseIoAddressBM_0 ? ((ULONGIO_PTR)BaseIoAddressBM_0 + i) : 0, MemIo, FALSE);
        }
        if(BaseIoAddressBM_0) {
            BaseIoAddressBM_0++;
        }
    }
    return;
} // end UniataInitMapBM()

VOID
NTAPI
UniataInitMapBase(
    IN PHW_CHANNEL chan,
    IN PIDE_REGISTERS_1 BaseIoAddress1,
    IN PIDE_REGISTERS_2 BaseIoAddress2
    )
{
    ULONG i;

    for (i=0; i<IDX_IO1_SZ; i++) {
        UniataInitIoRes(chan, IDX_IO1+i, BaseIoAddress1 ? ((ULONGIO_PTR)BaseIoAddress1 + i) : 0, FALSE, FALSE);
    }
    for (i=0; i<IDX_IO2_SZ; i++) {
        UniataInitIoRes(chan, IDX_IO2+i, BaseIoAddress2 ? ((ULONGIO_PTR)BaseIoAddress2 + i) : 0, FALSE, FALSE);
    }
    UniataInitSyncBaseIO(chan);
    return;
} // end UniataInitMapBase()

VOID
NTAPI
UniataInitSyncBaseIO(
    IN PHW_CHANNEL chan
    )
{
    RtlCopyMemory(&chan->RegTranslation[IDX_IO1_o], &chan->RegTranslation[IDX_IO1], IDX_IO1_SZ*sizeof(chan->RegTranslation[0]));
    RtlCopyMemory(&chan->RegTranslation[IDX_IO2_o], &chan->RegTranslation[IDX_IO2], IDX_IO2_SZ*sizeof(chan->RegTranslation[0]));
    return;
} // end UniataInitSyncBaseIO()

VOID
UniataInitIoRes(
    IN PHW_CHANNEL chan,
    IN ULONG idx,
    IN ULONG addr,
    IN BOOLEAN MemIo,
    IN BOOLEAN Proc
    )
{
    if(!addr) {
        MemIo = Proc = FALSE;
    }
    chan->RegTranslation[idx].Addr  = addr;
    chan->RegTranslation[idx].MemIo = MemIo;
    chan->RegTranslation[idx].Proc  = Proc;
} // end UniataInitIoRes()

VOID
UniataInitIoResEx(
    IN PIORES IoRes,
    IN ULONG addr,
    IN BOOLEAN MemIo,
    IN BOOLEAN Proc
    )
{
    if(!addr) {
        MemIo = Proc = FALSE;
    }
    IoRes->Addr  = addr;
    IoRes->MemIo = MemIo;
    IoRes->Proc  = Proc;
} // end UniataInitIoResEx()

VOID
NTAPI
AtapiSetupLunPtrs(
    IN PHW_CHANNEL chan,
    IN PHW_DEVICE_EXTENSION deviceExtension,
    IN ULONG c
    )
{
    ULONG i;

    KdPrint2((PRINT_PREFIX "AtapiSetupLunPtrs for channel %d of %d, %d luns \n", c, deviceExtension->NumberChannels, deviceExtension->NumberLuns));

    if(!deviceExtension->NumberLuns) {
        KdPrint2((PRINT_PREFIX "Achtung !deviceExtension->NumberLuns \n"));
        deviceExtension->NumberLuns = IDE_MAX_LUN_PER_CHAN;
    }
    KdPrint2((PRINT_PREFIX "  Chan %#x\n", chan));
    chan->DeviceExtension = deviceExtension;
    chan->lChannel        = c;
    chan->NumberLuns      = deviceExtension->NumberLuns;
    for(i=0; i<deviceExtension->NumberLuns; i++) {
        chan->lun[i] = &(deviceExtension->lun[c*deviceExtension->NumberLuns+i]);
        KdPrint2((PRINT_PREFIX "  Lun %#x\n", i));
        KdPrint2((PRINT_PREFIX "  Lun ptr %#x\n", chan->lun[i]));
    }
    chan->AltRegMap       = deviceExtension->AltRegMap;
    chan->NextDpcChan     = -1;
    chan->last_devsel     = -1;
    for(i=0; i<deviceExtension->NumberLuns; i++) {
        chan->lun[i]->DeviceExtension = deviceExtension;
        chan->lun[i]->chan            = chan;
        chan->lun[i]->Lun             = i;
    }
    if((deviceExtension->HwFlags & UNIATA_AHCI) &&
       deviceExtension->AhciInternalAtaReq0 &&
       deviceExtension->AhciInternalSrb0) {
        chan->AhciInternalAtaReq = &(deviceExtension->AhciInternalAtaReq0[c]);
        chan->AhciInternalSrb = &(deviceExtension->AhciInternalSrb0[c]);
        UniataAhciSetupCmdPtr(chan->AhciInternalAtaReq);
        chan->AhciInternalSrb->SrbExtension = chan->AhciInternalAtaReq;
        chan->AhciInternalAtaReq->Srb = chan->AhciInternalSrb;
    }
    return;
} // end AtapiSetupLunPtrs()

BOOLEAN
NTAPI
UniataAllocateLunExt(
    PHW_DEVICE_EXTENSION  deviceExtension,
    ULONG NewNumberChannels
    )
{
    PHW_LU_EXTENSION old_luns = NULL;
    PHW_CHANNEL old_chans = NULL;

    KdPrint2((PRINT_PREFIX "allocate %d Luns for %d channels\n", deviceExtension->NumberLuns, deviceExtension->NumberChannels));

    old_luns = deviceExtension->lun;
    old_chans = deviceExtension->chan;

    if(old_luns || old_chans) {
        if(NewNumberChannels == UNIATA_ALLOCATE_NEW_LUNS) {
            KdPrint2((PRINT_PREFIX "already allocated!\n"));
            return FALSE;
        }
    }

    if(!deviceExtension->NumberLuns) {
        KdPrint2((PRINT_PREFIX "default NumberLuns=2\n"));
        deviceExtension->NumberLuns = 2;
    }

    if(deviceExtension->HwFlags & UNIATA_AHCI) {
        if(!deviceExtension->AhciInternalAtaReq0) {
            deviceExtension->AhciInternalAtaReq0 = (PATA_REQ)ExAllocatePool(NonPagedPool, sizeof(ATA_REQ)*deviceExtension->NumberChannels);
            if (!deviceExtension->AhciInternalAtaReq0) {
                KdPrint2((PRINT_PREFIX "!deviceExtension->AhciInternalAtaReq0 => SP_RETURN_ERROR\n"));
                return FALSE;
            }
            RtlZeroMemory(deviceExtension->AhciInternalAtaReq0, sizeof(ATA_REQ)*deviceExtension->NumberChannels);
        }
        if(!deviceExtension->AhciInternalSrb0) {
            deviceExtension->AhciInternalSrb0 = (PSCSI_REQUEST_BLOCK)ExAllocatePool(NonPagedPool, sizeof(SCSI_REQUEST_BLOCK)*deviceExtension->NumberChannels);
            if (!deviceExtension->AhciInternalSrb0) {
                KdPrint2((PRINT_PREFIX "!deviceExtension->AhciInternalSrb0 => SP_RETURN_ERROR\n"));
                UniataFreeLunExt(deviceExtension);
                return FALSE;
            }
            RtlZeroMemory(deviceExtension->AhciInternalSrb0, sizeof(SCSI_REQUEST_BLOCK)*deviceExtension->NumberChannels);
        }
    }

    deviceExtension->lun = (PHW_LU_EXTENSION)ExAllocatePool(NonPagedPool, sizeof(HW_LU_EXTENSION) * (deviceExtension->NumberChannels+1) * deviceExtension->NumberLuns);
    if (!deviceExtension->lun) {
        KdPrint2((PRINT_PREFIX "!deviceExtension->lun => SP_RETURN_ERROR\n"));
        UniataFreeLunExt(deviceExtension);
        return FALSE;
    }
    RtlZeroMemory(deviceExtension->lun, sizeof(HW_LU_EXTENSION) * (deviceExtension->NumberChannels+1) * deviceExtension->NumberLuns);
    
    deviceExtension->chan = (PHW_CHANNEL)ExAllocatePool(NonPagedPool, sizeof(HW_CHANNEL) * (deviceExtension->NumberChannels+1));
    if (!deviceExtension->chan) {
        UniataFreeLunExt(deviceExtension);
        KdPrint2((PRINT_PREFIX "!deviceExtension->chan => SP_RETURN_ERROR\n"));
        return FALSE;
    }
    RtlZeroMemory(deviceExtension->chan, sizeof(HW_CHANNEL) * (deviceExtension->NumberChannels+1));
    return TRUE;
} // end UniataAllocateLunExt()

VOID
NTAPI
UniataFreeLunExt(
    PHW_DEVICE_EXTENSION  deviceExtension
    )
{
    if (deviceExtension->lun) {
        ExFreePool(deviceExtension->lun);
        deviceExtension->lun = NULL;
    }
    if (deviceExtension->chan) {
        ExFreePool(deviceExtension->chan);
        deviceExtension->chan = NULL;
    }
    if(deviceExtension->AhciInternalAtaReq0) {
        ExFreePool(deviceExtension->AhciInternalAtaReq0);
        deviceExtension->AhciInternalAtaReq0 = NULL;
    }
    if(deviceExtension->AhciInternalSrb0) {
        ExFreePool(deviceExtension->AhciInternalSrb0);
        deviceExtension->AhciInternalSrb0 = NULL;
    }
    
    return;
} // end UniataFreeLunExt()

