Updated for "Windows 10 Anniversary Update" (Version 1607)

17 files changed, 0 insertions, 3529 deletions

diff --git a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.c b/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.c
deleted file mode 100644
index 3aade318..00000000
--- a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.c
+++ /dev/null
@@ -1,1253 +0,0 @@
-/*++
-
-Copyright (c) 2011 Microsoft Corporation
-
-Module Name:
-
-    HalExtSampleDma.c
-
-Abstract:
-
-    This file implements a HAL Extension Module for the fictitious chDMA
-    controller.
-
-Author:
-
-    Cody Hartwig (chartwig) 9-Jun-2011
-
---*/
-
-//
-// --------------------------------------------------------------------Includes
-//
-
-#include <nthalext.h>
-
-//
-// ---------------------------------------------------------------- Definitions
-//
-
-//
-// Disable warnings of features used by the standard headers
-//
-// Disable warning C4214: nonstandard extension used : bit field types other than int
-// Disable warning C4201: nonstandard extension used : nameless struct/union
-// Disable warning C4115: named type definition in parentheses
-// Disable warning C4127: conditional expression is constant
-// Disable warning C4200: zero-sized array in struct/union
-//
-
-#pragma warning(disable:4214 4201 4115 4127 4200)
-
-//
-// Define register set size.
-//
-
-#define CH_DMA_REGISTER_SIZE            (0x210)
-
-//
-// Define maximums.
-//
-
-#define CH_DMA_MAX_REQUEST_LINES        (32)
-#define CH_DMA_MAX_CHANNELS             (32)
-
-#define CONFIGURE_ADD_REQ_CONFIG        (0x80000000)
-
-//
-// Define register offsets.
-//
-
-#define CH_DMA_CONTROL                  (0x00)
-#define CH_DMA_STATUS                   (0x04)
-#define CH_DMA_INTERRUPT_MASK           (0x08)
-
-#define CH_DMA_CHAN_CONTROL             (0x00)
-#define CH_DMA_CHAN_MEM_PTR             (0x04)
-#define CH_DMA_CHAN_DEV_PTR             (0x08)
-#define CH_DMA_CHAN_STATUS              (0x1c)
-
-//
-// Define device-side bus widths.
-//
-
-#define CH_DMA_WIDTH_8_BIT              (0)
-#define CH_DMA_WIDTH_16_BIT             (1)
-#define CH_DMA_WIDTH_32_BIT             (2)
-
-//
-// Define transfer burst sizes.
-//
-
-#define CH_DMA_BURST_1_WORD             (0)
-#define CH_DMA_BURST_2_WORD             (1)
-#define CH_DMA_BURST_4_WORD             (2)
-#define CH_DMA_BURST_8_WORD             (3)
-
-//
-// Define transfer directions.
-//
-
-#define CH_DMA_DEVICE_WRITE             (0)
-#define CH_DMA_DEVICE_READ              (1)
-
-//
-// ------------------------------------------------------ Data Type Definitions
-//
-
-#pragma pack(push, 1)
-
-//
-// Register Definitions.
-//
-
-typedef struct _CH_DMA_CONTROL_REGISTER {
-    union {
-        struct {
-            ULONG ControllerEnable:1;
-            ULONG Reserved:31;
-        };
-        ULONG AsUlong;
-    };
-} CH_DMA_CONTROL_REGISTER, *PCH_DMA_CONTROL_REGISTER;
-
-typedef struct _CH_DMA_CHAN_CONTROL_REGISTER {
-    union {
-        struct {
-            ULONG ChannelEnable:1;
-            ULONG InterruptEnable:1;
-            ULONG DeviceWidth:2;
-            ULONG BurstSize:2;
-            ULONG FlowControl:1;
-            ULONG Loop:1;
-            ULONG RequestLine:5;
-            ULONG ReadFromDevice:1;
-            ULONG Reserved:2;
-            ULONG Length:16;
-        };
-        ULONG AsUlong;
-    };
-} CH_DMA_CHAN_CONTROL_REGISTER, *PCH_DMA_CHAN_CONTROL_REGISTER;
-
-typedef struct _CH_DMA_CHAN_STATUS_REGISTER {
-    union {
-        struct {
-            ULONG Busy:1;
-            ULONG Reserved:15;
-            ULONG BytesTransferred:16;
-        };
-        ULONG AsUlong;
-    };
-} CH_DMA_CHAN_STATUS_REGISTER, *PCH_DMA_CHAN_STATUS_REGISTER;
-
-//
-// CSRT resource descriptor types for chDMA.
-//
-
-typedef struct _CH_DMA_ADD_REQ_LINE_CONFIG {
-    ULONG RequestLine;
-    CH_DMA_CHAN_CONTROL_REGISTER Ctrl;
-} CH_DMA_ADD_REQ_LINE_CONFIG, *PCH_DMA_ADD_REQ_LINE_CONFIG;
-
-typedef struct _RD_DMA_CONTROLLER {
-    CSRT_RESOURCE_DESCRIPTOR_HEADER Header;
-    ULONGLONG BasePhysicalAddress;
-    ULONG ChannelCount;
-    ULONG MinimumRequestLine;
-    ULONG MaximumRequestLine;
-    ULONG InterruptGsi;
-    BOOLEAN CacheCoherent;
-    ULONG ReqLineConfigCount;
-    CH_DMA_ADD_REQ_LINE_CONFIG ReqLineConfigs[ANYSIZE_ARRAY];
-} RD_DMA_CONTROLLER, *PRD_DMA_CONTROLLER;
-
-//
-// Resource description matching chDMA controller described in chdmaReadme.txt:
-//
-// CH_DMA_CHAN_CONTROL_REGISTER UartControl;
-// UartControl.AsUlong = 0;
-// UartControl.DeviceWidth = CH_DMA_WIDTH_8_BIT;
-// UartControl.BurstSize = CH_DMA_BURST_1_WORD;
-// UartControl.FlowControl = 1;
-//
-// CH_DMA_ADD_REQ_LINE_CONFIG UartConfig = {
-//      0x15,
-//      UartControl
-// };
-//
-// RD_DMA_CONTROLLER DmaDesc = {
-//      Header,
-//      0x70001000,
-//      32,
-//      0,
-//      31,
-//      0x27,
-//      FALSE,
-//      1,
-//      { UartConfig }
-// };
-//
-
-typedef struct _RD_DMA_CHANNEL {
-    CSRT_RESOURCE_DESCRIPTOR_HEADER Header;
-    ULONG ChannelNumber;
-} RD_DMA_CHANNEL, *PRD_DMA_CHANNEL;
-
-//
-// Resource description matching chDMA channel described in chdmaReadme.txt:
-//
-// RD_DMA_CHANNEL DmaDesc = {
-//      Header,
-//      0
-// };
-//
-
-#pragma pack(pop)
-
-//
-// Extension Request line to configuration mapping.
-//
-
-typedef struct _CH_REQ_LINE_CONFIG {
-    BOOLEAN Valid;
-    CH_DMA_CHAN_CONTROL_REGISTER Ctrl;
-} CH_REQ_LINE_CONFIG, *PCH_REQ_LINE_CONFIG;
-
-typedef struct _CH_REQ_LINE_CONFIG_TABLE {
-    CH_REQ_LINE_CONFIG Entries[CH_DMA_MAX_REQUEST_LINES];
-} CH_DMA_REQ_LINE_CONFIG_TABLE, *PCH_DMA_REQ_LINE_CONFIG_TABLE;
-
-//
-// Define extension internal data for the controller and channel.
-//
-
-typedef struct _CH_DMA_CHANNEL {
-    BOOLEAN Active;
-    BOOLEAN AutoInit;
-} CH_DMA_CHANNEL, *PCH_DMA_CHANNEL;
-
-typedef struct _CH_DMA_CONTROLLER {
-
-    //
-    // Virtual and physical base addresses of the controller.
-    //
-
-    PULONG ControllerBaseVa;
-    PHYSICAL_ADDRESS ControllerBasePa;
-
-    ULONG ChannelCount;
-    ULONG MinimumRequestLine;
-    ULONG MaximumRequestLine;
-
-    //
-    // Individual channel extension status.
-    //
-
-    CH_DMA_CHANNEL Channels[CH_DMA_MAX_CHANNELS];
-
-    //
-    // Request line to configuration mapping.
-    //
-
-    CH_DMA_REQ_LINE_CONFIG_TABLE ReqConfig;
-} CH_DMA_CONTROLLER, *PCH_DMA_CONTROLLER;
-
-//
-// ----------------------------------------------------------------- Prototypes
-//
-
-VOID
-ChInitializeController (
-    __in PVOID ControllerContext
-    );
-
-BOOLEAN
-ChValidateRequestLineBinding (
-    __in PVOID ControllerContext,
-    __in PDMA_REQUEST_LINE_BINDING_DESCRIPTION BindingDescription
-    );
-
-ULONG
-ChQueryMaxFragments (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber,
-    __in ULONG MaxFragmentsRequested
-    );
-
-VOID
-ChProgramChannel (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber,
-    __in ULONG RequestLine,
-    __in PDMA_SCATTER_GATHER_LIST MemoryAddresses,
-    __in PHYSICAL_ADDRESS DeviceAddress,
-    __in BOOLEAN WriteToDevice,
-    __in BOOLEAN LoopTransfer
-    );
-
-BOOLEAN
-ChCancelTransfer (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber
-    );
-
-NTSTATUS
-ChConfigureChannel (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber,
-    __in ULONG FunctionNumber,
-    __in PVOID Context
-    );
-
-VOID
-ChFlushChannel (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber
-    );
-
-_Success_(return != FALSE)
-BOOLEAN
-ChHandleInterrupt (
-    __in PVOID ControllerContext,
-    __out PULONG ChannelNumber,
-    __out PDMA_INTERRUPT_TYPE InterruptType
-    );
-
-ULONG
-ChReadDmaCounter (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber
-    );
-
-//
-// -------------------------------------------------------------------- Globals
-//
-
-DMA_FUNCTION_TABLE ChFunctionTable =
-{
-    ChInitializeController,
-    ChValidateRequestLineBinding,
-    ChQueryMaxFragments,
-    ChProgramChannel,
-    ChConfigureChannel,
-    ChFlushChannel,
-    ChHandleInterrupt,
-    ChReadDmaCounter,
-    NULL, /* ReportCommonBuffer */
-    ChCancelTransfer
-};
-
-//
-// ------------------------------------------------------------------- Routines
-//
-
-VOID
-WriteRegister (
-    __in PCH_DMA_CONTROLLER Controller,
-    __in ULONG RegisterOffset,
-    __in ULONG Value
-    )
-
-{
-
-    PULONG Address;
-
-    Address = Controller->ControllerBaseVa;
-
-    //
-    // Add register offset.  Register offset is in bytes.  Pointer addition is
-    // in ULONGs.
-    //
-
-    Address += (RegisterOffset / 4);
-
-    WRITE_REGISTER_ULONG(Address, Value);
-}
-
-ULONG
-ReadRegister (
-    __in PCH_DMA_CONTROLLER Controller,
-    __in ULONG RegisterOffset
-    )
-
-{
-
-    PULONG Address;
-
-    Address = Controller->ControllerBaseVa;
-
-    //
-    // Add register offset.  Register offset is in bytes.  Pointer addition is
-    // in ULONGs.
-    //
-
-    Address += (RegisterOffset / 4);
-
-    return READ_REGISTER_ULONG(Address);
-}
-
-VOID
-WriteChannelRegister (
-    __in PCH_DMA_CONTROLLER Controller,
-    __in ULONG ChannelNumber,
-    __in ULONG RegisterOffset,
-    __in ULONG Value
-    )
-
-{
-    PULONG Address;
-
-    Address = Controller->ControllerBaseVa;
-
-    //
-    // Add channel base offset.
-    // Register offset is in bytes.  Pointer addition is in ULONGs.
-    //
-
-    Address += (0x10 / 4);
-
-    //
-    // Add channel number offset.
-    //
-
-    Address += ((0x10 * ChannelNumber) / 4);
-
-    //
-    // Add channel register offset.
-    //
-
-    Address += (RegisterOffset / 4);
-
-    WRITE_REGISTER_ULONG(Address, Value);
-}
-
-ULONG
-ReadChannelRegister (
-    __in PCH_DMA_CONTROLLER Controller,
-    __in ULONG ChannelNumber,
-    __in ULONG RegisterOffset
-    )
-
-{
-
-    PULONG Address;
-
-    Address = Controller->ControllerBaseVa;
-
-    //
-    // Add channel base offset.
-    // Register offset is in bytes.  Pointer addition is in ULONGs.
-    //
-
-    Address += (0x10 / 4);
-
-    //
-    // Add channel number offset.
-    //
-
-    Address += ((0x10 * ChannelNumber) / 4);
-
-    //
-    // Add channel register offset.
-    //
-
-    Address += (RegisterOffset / 4);
-
-    return READ_REGISTER_ULONG(Address);
-}
-
-VOID
-ChInitializeController (
-    __in PVOID ControllerContext
-    )
-
-/*++
-
-Routine Description:
-
-    This routine provides an opportunity for DMA controllers to initialize.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internel data.
-
-Return Value:
-
-    None.
-
---*/
-
-{
-
-    CH_DMA_CONTROL_REGISTER CtrlRegister;
-    PCH_DMA_CONTROLLER Controller;
-    ULONG Index;
-    ULONG InterruptMask;
-
-    Controller = (PCH_DMA_CONTROLLER)ControllerContext;
-
-    //
-    // Map the controller base iff this is the first call to init (and it is
-    // therefore not already mapped.)
-    //
-
-    if (Controller->ControllerBaseVa == NULL) {
-        Controller->ControllerBaseVa =
-            (PULONG) HalMapIoSpace(Controller->ControllerBasePa,
-                                   PAGE_SIZE,
-                                   MmNonCached);
-
-        NT_ASSERT(Controller->ControllerBaseVa != NULL);
-    }
-
-    if (Controller->ControllerBaseVa == NULL) {
-        return;
-    }
-
-    //
-    // Initialize each channel.
-    //
-
-    for (Index = 0; Index < Controller->ChannelCount; Index += 1) {
-        WriteChannelRegister(Controller, Index, CH_DMA_CHAN_CONTROL, 0);
-        Controller->Channels[Index].Active = FALSE;
-        Controller->Channels[Index].AutoInit = FALSE;
-    }
-
-    //
-    // Enable the DMA controller.
-    //
-
-    CtrlRegister.AsUlong = 0;
-    CtrlRegister.ControllerEnable = 1;
-    WriteRegister(Controller, CH_DMA_CONTROL, CtrlRegister.AsUlong);
-
-    //
-    // Enable all interrupts.
-    //
-
-    InterruptMask = (1UL << Controller->ChannelCount) - 1;
-    WriteRegister(Controller, CH_DMA_INTERRUPT_MASK, InterruptMask);
-
-    return;
-}
-
-BOOLEAN
-ChValidateRequestLineBinding (
-    __in PVOID ControllerContext,
-    __in PDMA_REQUEST_LINE_BINDING_DESCRIPTION BindingDescription
-    )
-
-/*++
-
-Routine Description:
-
-    This routine queries a DMA controller extension to test the validity of a
-    request line binding.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internal data.
-
-    DeviceDescription - Supplies a pointer to the request information.
-
-Return Value:
-
-    TRUE if the request line binding is valid and supported by the controller.
-
-    FALSE if the binding is invalid.
-
-Environment:
-
-    PASSIVE_LEVEL.
-
---*/
-
-{
-
-    PCH_DMA_CONTROLLER Controller;
-
-    Controller = (PCH_DMA_CONTROLLER)ControllerContext;
-    if (BindingDescription->ChannelNumber > Controller->ChannelCount) {
-        return FALSE;
-    }
-
-    if ((BindingDescription->RequestLine > Controller->MaximumRequestLine) ||
-        (BindingDescription->RequestLine < Controller->MinimumRequestLine)) {
-
-        return FALSE;
-    }
-
-    return TRUE;
-}
-
-ULONG
-ChQueryMaxFragments (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber,
-    __in ULONG MaxFragmentsRequested
-    )
-
-/*++
-
-Routine Description:
-
-    This routine queries the DMA extension to determine the number of
-    scatter gather fragments that the next transfer can support.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internal data.
-
-    ChannelNumber - Supplies the number of the channel to program.
-
-    MaxFragmentsRequested - Supplies a hint to the maximum fragments useful to
-        this transfer.
-
-Return Value:
-
-    Number of fragments the next transfer on this channel can support.
-
---*/
-
-{
-
-    UNREFERENCED_PARAMETER(ControllerContext);
-    UNREFERENCED_PARAMETER(ChannelNumber);
-    UNREFERENCED_PARAMETER(MaxFragmentsRequested);
-
-    return 1;
-}
-
-VOID
-ChProgramChannel (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber,
-    __in ULONG RequestLine,
-    __in PDMA_SCATTER_GATHER_LIST MemoryAddresses,
-    __in PHYSICAL_ADDRESS DeviceAddress,
-    __in BOOLEAN WriteToDevice,
-    __in BOOLEAN LoopTransfer
-    )
-
-/*++
-
-Routine Description:
-
-    This routine programs a DMA controller channel for a specific transfer.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internal data.
-
-    ChannelNumber - Supplies the number of the channel to program.
-
-    RequestLine - Supplies the request line number to program.  This request
-        line number is system-unique (as provided to the HAL during
-        registration) and must be translated by the extension.
-
-    MemoryAddress - Supplies the address to be programmed into the memory
-        side of the channel configuration.
-
-    DeviceAddress - Supplies the address to be programmed into the device
-        side of the channel configuration.
-
-    WriteToDevice - Supplies the direction of the transfer.
-
-    LoopTransfer - Supplies whether AutoInitialize has been set in the
-        adapter making this request.
-
-Return Value:
-
-    None.
-
---*/
-
-{
-
-    CH_DMA_CHAN_CONTROL_REGISTER Ctrl;
-    PCH_DMA_CONTROLLER Controller;
-    ULONG DevPtr;
-    ULONG MemPtr;
-
-    Controller = (PCH_DMA_CONTROLLER)ControllerContext;
-    Controller->Channels[ChannelNumber].Active = TRUE;
-
-    //
-    // If this request line exists in the request line config table, use
-    // those values.  Otherwise, use the reset values.
-    //
-
-    Ctrl.AsUlong = 0;
-    if (Controller->ReqConfig.Entries[RequestLine].Valid != 0) {
-        Ctrl.AsUlong = Controller->ReqConfig.Entries[RequestLine].Ctrl.AsUlong;
-    }
-
-    Ctrl.ChannelEnable = 1;
-    Ctrl.InterruptEnable = 1;
-    Ctrl.Loop = (LoopTransfer == FALSE) ? 0 : 1;
-    Ctrl.ReadFromDevice = (WriteToDevice == FALSE) ? 1 : 0;
-
-    //
-    // Request lines numbers reported by BIOS may be offset to make them
-    // globally unique.  Request lines on the controller are based at 0.
-    //
-
-    Ctrl.RequestLine = RequestLine - Controller->MinimumRequestLine;
-    Ctrl.Length = MemoryAddresses->Elements[0].Length;
-
-    DevPtr = DeviceAddress.LowPart;
-    MemPtr = MemoryAddresses->Elements[0].Address.LowPart;
-
-    WriteChannelRegister(Controller,
-                         ChannelNumber,
-                         CH_DMA_CHAN_MEM_PTR,
-                         MemPtr);
-
-    WriteChannelRegister(Controller,
-                         ChannelNumber,
-                         CH_DMA_CHAN_DEV_PTR,
-                         DevPtr);
-
-    //
-    // Channel control is written last as it will enable the channel.
-    //
-
-    WriteChannelRegister(Controller,
-                         ChannelNumber,
-                         CH_DMA_CHAN_CONTROL,
-                         Ctrl.AsUlong);
-}
-
-BOOLEAN
-ChCancelTransfer (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber
-    )
-
-/*++
-
-Routine Description:
-
-    This routine must disable the selected channel.  The channel must not be
-    capable of interrupting for this transfer after being cleared in this way.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internal data.
-
-    ChannelNumber - Supplies the channel number.
-
-Return Value:
-
-    FALSE if the channel is already idle or if the channel is already asserting
-    an interrupt.  TRUE is the channel is active and no interrupt is asserted.
-
---*/
-
-{
-
-    PCH_DMA_CONTROLLER Controller;
-    ULONG StatusRegister;
-
-    Controller = (PCH_DMA_CONTROLLER)ControllerContext;
-
-    //
-    // If the channel is not active (because the interrupt already fired or
-    // because the channel was never programmed, return immediately.
-    //
-
-    if (Controller->Channels[ChannelNumber].Active == FALSE) {
-        return FALSE;
-    }
-
-    //
-    // Disable the channel.
-    //
-
-    WriteChannelRegister(Controller, ChannelNumber, CH_DMA_CHAN_CONTROL, 0);
-
-    //
-    // If an interrupt is already pending on the channel, do nothing.  The
-    // normal interrupt path will complete it.  If an interrupt is not pending
-    // then this was successfully cancelled.  In that case, mark the channel
-    // inactive and return TRUE.
-    //
-
-    StatusRegister = ReadRegister(Controller, CH_DMA_STATUS);
-    if ((StatusRegister & (1UL << ChannelNumber)) != 0) {
-        return FALSE;
-
-    } else {
-        Controller->Channels[ChannelNumber].Active = FALSE;
-        return TRUE;
-    }
-}
-
-NTSTATUS
-AddReqLineConfig (
-    __in PCH_DMA_CONTROLLER Controller,
-    __in PCH_DMA_ADD_REQ_LINE_CONFIG Config
-    )
-
-/*++
-
-Routine Description:
-
-    This routine updates the request line configuration table in the
-    extension's internal data for this controller.
-
-Arguments:
-
-    Controller - Supplies a pointer to the internal data for the controller.
-
-    Config - Supplies a pointer to the configuration to modify.
-
-Return Value:
-
-    STATUS_INVALID_PARAMETER if the request line is invalid.
-    Else, STATUS_SUCCESS.
-
---*/
-
-{
-
-    ULONG RequestLine;
-
-    RequestLine = Config->RequestLine;
-    if ((RequestLine < Controller->MinimumRequestLine) ||
-        (RequestLine > Controller->MaximumRequestLine)) {
-
-        return STATUS_INVALID_PARAMETER;
-    }
-
-    Controller->ReqConfig.Entries[RequestLine].Ctrl.AsUlong =
-        Config->Ctrl.AsUlong;
-
-    return STATUS_SUCCESS;
-}
-
-NTSTATUS
-ChConfigureChannel (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber,
-    __in ULONG FunctionNumber,
-    __in PVOID Context
-    )
-
-/*++
-
-Routine Description:
-
-    This routine configures the channel for a DMA extension specific operation.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internal data.
-
-    ChannelNumber - Supplies the channel to configure.
-
-    FunctionNumber - Supplies the ID of the operation to perform.
-
-    Context - Supplies parameters for this operation.
-
-Return Value:
-
-    NTSTATUS code.
-
---*/
-
-{
-
-    PCH_DMA_CONTROLLER Controller;
-    NTSTATUS Status;
-
-    UNREFERENCED_PARAMETER(ChannelNumber);
-
-    Controller = (PCH_DMA_CONTROLLER)ControllerContext;
-    switch (FunctionNumber) {
-    case CONFIGURE_ADD_REQ_CONFIG:
-        Status = AddReqLineConfig(Controller,
-                                  (PCH_DMA_ADD_REQ_LINE_CONFIG)Context);
-
-        break;
-    default:
-        Status = STATUS_NOT_IMPLEMENTED;
-    }
-
-    return Status;
-}
-
-VOID
-ChFlushChannel (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber
-    )
-
-/*++
-
-Routine Description:
-
-    This routine flushes a previous transfer from a channel and returns the
-    channel to a state ready for the next ProgramChannel call.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internal data.
-
-    ChannelNumber - Supplies the channel to flush.
-
-Return Value:
-
-    None.
-
---*/
-
-{
-
-    PCH_DMA_CONTROLLER Controller;
-
-    Controller = (PCH_DMA_CONTROLLER)ControllerContext;
-    WriteChannelRegister(Controller, ChannelNumber, CH_DMA_CHAN_CONTROL, 0);
-}
-
-_Success_(return != FALSE)
-BOOLEAN
-ChHandleInterrupt (
-    __in PVOID ControllerContext,
-    __out PULONG ChannelNumber,
-    __out PDMA_INTERRUPT_TYPE InterruptType
-    )
-
-/*++
-
-Routine Description:
-
-    This routine probes a controller for interrupts, clears any interrupts
-    found, fills in channel and interrupt type information.  This routine
-    will be called repeatedly until FALSE is returned.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internal data.
-
-    ChannelNumber - Supplies a placeholder for the extension to fill in which
-        channel is interrupting.
-
-    InterruptType - Supplies a placeholder for the extension to fill in the
-        interrupt type.
-
-Return Value:
-
-    TRUE if an interrupt was found on this controller.
-
-    FALSE otherwise.
-
---*/
-
-{
-
-    PCH_DMA_CONTROLLER Controller;
-    ULONG Index;
-    ULONG StatusRegister;
-
-    Controller = (PCH_DMA_CONTROLLER)ControllerContext;
-    StatusRegister = ReadRegister(Controller, CH_DMA_STATUS);
-    for (Index = 0; Index < Controller->ChannelCount; Index += 1) {
-        if ((StatusRegister & (1UL << Index)) != 0) {
-            *ChannelNumber = Index;
-            *InterruptType = InterruptTypeCompletion;
-            WriteRegister(Controller, CH_DMA_STATUS, (1UL << Index));
-
-            //
-            // If the channel is not marked as active, then this interrupt
-            // is spurious.  Probably this is the result of a transfer being
-            // cancelled.
-            //
-
-            if (Controller->Channels[Index].Active == FALSE) {
-                continue;
-            }
-
-            //
-            // If the channel is not in autoinitialize mode, is it inactive now.
-            // If the channel is in autoinitialize, then it will remain active
-            // until it receives a cancel.
-            //
-
-            if (Controller->Channels[Index].AutoInit == FALSE) {
-                Controller->Channels[Index].Active = FALSE;
-            }
-
-            return TRUE;
-        }
-    }
-
-    return FALSE;
-}
-
-ULONG ChReadDmaCounter (
-    __in PVOID ControllerContext,
-    __in ULONG ChannelNumber
-    )
-
-/*++
-
-Routine Description:
-
-    This routine determines how many bytes remain to be transferred on the
-    given channel.  If the current transfer is set to loop, this routine
-    will return the number of bytes remaining in the current iteration.
-
-Arguments:
-
-    ControllerContext - Supplies a pointer to the controller's internal data.
-
-    ChannelNumber - Supplies the channel number.
-
-Return Value:
-
-    Returns the number of bytes remaining to be transferred on the given
-    channel.
-
---*/
-
-{
-
-    PCH_DMA_CONTROLLER Controller;
-    CH_DMA_CHAN_CONTROL_REGISTER Ctrl;
-    CH_DMA_CHAN_STATUS_REGISTER StatusReg;
-
-    Controller = (PCH_DMA_CONTROLLER)ControllerContext;
-    Ctrl.AsUlong = ReadChannelRegister(Controller,
-                                       ChannelNumber,
-                                       CH_DMA_CHAN_CONTROL);
-
-    StatusReg.AsUlong = ReadChannelRegister(Controller,
-                                            ChannelNumber,
-                                            CH_DMA_CHAN_STATUS);
-
-    return (Ctrl.Length - StatusReg.BytesTransferred);
-}
-
-NTSTATUS
-RegisterDmaController (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup,
-    __in PCSRT_RESOURCE_DESCRIPTOR_HEADER ResourceDescriptor,
-    __out PULONG ControllerId
-    )
-
-/*++
-
-Routine Description:
-
-    This routine takes a DMA resource descriptor with subtype controller.
-    The controller is then registered with the HAL.
-
-Arguments:
-
-    Handle - Supplies handle passed to extension.
-
-    ResourceGroup - Supplies resource group containing this descriptor.
-
-    ResourceDescrpitor - Supplies the resource descriptor.
-
-    ControllerId - Supplies a placeholder for the controller ID returned from
-        the HAL after registration.
-
-Return Value:
-
-    NTSTATUS Value.
-
---*/
-
-{
-
-    PCH_REQ_LINE_CONFIG ConfigEntry;
-    PCH_REQ_LINE_CONFIG ConfigTableDst;
-    PCH_DMA_ADD_REQ_LINE_CONFIG ConfigTableSrc;
-    CH_DMA_CONTROLLER Controller;
-    PRD_DMA_CONTROLLER DmaDesc;
-    DMA_INITIALIZATION_BLOCK DmaInitBlock;
-    ULONG Index;
-    ULONG RequestLine;
-    NTSTATUS Status;
-
-    RtlZeroMemory(&Controller, sizeof(CH_DMA_CONTROLLER));
-
-    DmaDesc = (PRD_DMA_CONTROLLER)ResourceDescriptor;
-    Controller.ControllerBasePa.QuadPart = DmaDesc->BasePhysicalAddress;
-    Controller.ChannelCount = DmaDesc->ChannelCount;
-    Controller.MinimumRequestLine = DmaDesc->MinimumRequestLine;
-    Controller.MaximumRequestLine = DmaDesc->MaximumRequestLine;
-
-    //
-    // Build request line configuration mapping table.
-    //
-
-    ConfigTableDst = &Controller.ReqConfig.Entries[0];
-    ConfigTableSrc = &DmaDesc->ReqLineConfigs[0];
-
-    //
-    // Verify the supplied configuration description will fit within
-    // the build maximum.
-    //
-
-    if (DmaDesc->ReqLineConfigCount >= CH_DMA_MAX_REQUEST_LINES) {
-        Status = STATUS_INVALID_PARAMETER_1;
-        goto Exit;
-    }
-
-    for (Index = 0; Index < DmaDesc->ReqLineConfigCount; Index += 1) {
-
-        RequestLine = ConfigTableSrc[Index].RequestLine;
-
-        //
-        // Keep PreFast happy that we're assigning within memory bounds
-        //
-
-        if (RequestLine >= CH_DMA_MAX_REQUEST_LINES) {
-            Status = STATUS_INVALID_PARAMETER_2;
-            goto Exit;
-        }
-
-        ConfigEntry = &ConfigTableDst[RequestLine];
-        ConfigEntry->Ctrl.AsUlong = ConfigTableSrc[Index].Ctrl.AsUlong;
-        ConfigEntry->Valid = TRUE;
-    }
-
-    INITIALIZE_DMA_HEADER(&DmaInitBlock);
-    DmaInitBlock.ChannelCount = Controller.ChannelCount;
-    DmaInitBlock.MinimumTransferUnit = 1;
-    DmaInitBlock.MinimumRequestLine = Controller.MinimumRequestLine;
-    DmaInitBlock.MaximumRequestLine = Controller.MaximumRequestLine;
-    DmaInitBlock.CacheCoherent = DmaDesc->CacheCoherent;
-    DmaInitBlock.GeneratesInterrupt = TRUE;
-    DmaInitBlock.InternalData = (PVOID)&Controller;
-    DmaInitBlock.InternalDataSize = sizeof(CH_DMA_CONTROLLER);
-    DmaInitBlock.DmaAddressWidth = 32;
-    DmaInitBlock.Gsi = DmaDesc->InterruptGsi;
-    DmaInitBlock.InterruptPolarity = InterruptActiveHigh;
-    DmaInitBlock.InterruptMode = LevelSensitive;
-    DmaInitBlock.Operations = &ChFunctionTable;
-
-    //
-    // Register physical address space with the HAL.
-    //
-
-    HalRegisterPermanentAddressUsage(Controller.ControllerBasePa,
-                                     CH_DMA_REGISTER_SIZE);
-
-    //
-    // Register controller.
-    //
-
-    Status = RegisterResourceDescriptor(Handle,
-                                        ResourceGroup,
-                                        ResourceDescriptor,
-                                        &DmaInitBlock);
-
-    *ControllerId = DmaInitBlock.ControllerId;
-
-Exit:
-    return Status;
-
-}
-
-NTSTATUS
-RegisterDmaChannel (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup,
-    __in PCSRT_RESOURCE_DESCRIPTOR_HEADER ResourceDescriptor,
-    __in ULONG ControllerId
-    )
-
-/*++
-
-Routine Description:
-
-    This routine takes a DMA resource descriptor with subtype channel.
-    The channel is then registered with the HAL.
-
-Arguments:
-
-    Handle - Supplies handle passed to extension.
-
-    ResourceGroup - Supplies resource group containing this descriptor.
-
-    ResourceDescrpitor - Supplies the resource descriptor.
-
-    ControllerId - Supplies the controller ID this channel is registered with.
-
-Return Value:
-
-    NTSTATUS Value.
-
---*/
-
-{
-
-    DMA_CHANNEL_INITIALIZATION_BLOCK DmaChannelInitBlock;
-    PRD_DMA_CHANNEL DmaDesc;
-
-    NT_ASSERT(ControllerId != 0);
-
-    DmaDesc = (PRD_DMA_CHANNEL)ResourceDescriptor;
-    INITIALIZE_DMA_CHANNEL_HEADER(&DmaChannelInitBlock);
-    DmaChannelInitBlock.ControllerId = ControllerId;
-    DmaChannelInitBlock.GeneratesInterrupt = FALSE;
-    DmaChannelInitBlock.ChannelNumber = DmaDesc->ChannelNumber;
-    DmaChannelInitBlock.CommonBufferLength = 0;
-
-    return RegisterResourceDescriptor(Handle,
-                                      ResourceGroup,
-                                      ResourceDescriptor,
-                                      &DmaChannelInitBlock);
-}
-
-NTSTATUS
-AddResourceGroup (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup
-    )
-
-{
-
-    ULONG ControllerId;
-    PCSRT_RESOURCE_DESCRIPTOR_HEADER ResourceDescriptor;
-
-    ResourceDescriptor = NULL;
-    ControllerId = 0;
-    for (;;) {
-        ResourceDescriptor =
-            GetNextResourceDescriptor(Handle,
-                                      ResourceGroup,
-                                      ResourceDescriptor,
-                                      CSRT_RD_TYPE_DMA,
-                                      CSRT_RD_SUBTYPE_ANY,
-                                      CSRT_RD_UID_ANY);
-
-        if (ResourceDescriptor == NULL) {
-            break;
-        }
-
-        if (ResourceDescriptor->Subtype == CSRT_RD_SUBTYPE_DMA_CONTROLLER) {
-            RegisterDmaController(Handle,
-                                  ResourceGroup,
-                                  ResourceDescriptor,
-                                  &ControllerId);
-
-        } else if (ResourceDescriptor->Subtype == CSRT_RD_SUBTYPE_DMA_CHANNEL) {
-            RegisterDmaChannel(Handle,
-                               ResourceGroup,
-                               ResourceDescriptor,
-                               ControllerId);
-        } else {
-
-            NT_ASSERT(FALSE);
-        }
-    }
-
-    return STATUS_SUCCESS;
-}
diff --git a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.def b/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.def
deleted file mode 100644
index 22ecba00..00000000
--- a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.def
+++ /dev/null
@@ -1,2 +0,0 @@
-LIBRARY HalExtSampleDma
-
diff --git a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.rc b/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.rc
deleted file mode 100644
index 534afafb..00000000
--- a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.rc
+++ /dev/null
@@ -1,10 +0,0 @@
-#include "verrsrc.h"
-#include <ntverp.h>
-
-#define VER_FILETYPE                VFT_DLL
-#define VER_FILESUBTYPE             VFT_UNKNOWN
-#define VER_FILEDESCRIPTION_STR     "HAL Extension Sample - DMA"
-#define VER_INTERNALNAME_STR        "HalExtSampleDma.DLL"
-#define VER_ORIGINALFILENAME_STR    "HalExtSampleDma.DLL"
-
-#include <common.ver>
diff --git a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.vcxproj b/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.vcxproj
deleted file mode 100644
index 4d7b340c..00000000
--- a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.vcxproj
+++ /dev/null
@@ -1,126 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Arm">
-      <Configuration>Debug</Configuration>
-      <Platform>Arm</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Arm">
-      <Configuration>Release</Configuration>
-      <Platform>Arm</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{7568DCFB-C421-478A-A809-21EF6EC243BE}</ProjectGuid>
-    <RootNamespace>$(MSBuildProjectName)</RootNamespace>
-    <KMDF_VERSION_MAJOR>1</KMDF_VERSION_MAJOR>
-    <Configuration Condition="'$(Configuration)' == ''">Debug</Configuration>
-    <Platform Condition="'$(Platform)' == ''">Arm</Platform>
-    <SampleGuid>{03525FA0-7E40-493E-AAB7-D8D73FACBC51}</SampleGuid>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <TargetVersion>Windows10</TargetVersion>
-    <UseDebugLibraries>False</UseDebugLibraries>
-    <DriverTargetPlatform>Universal</DriverTargetPlatform>
-    <DriverType />
-    <PlatformToolset>WindowsApplicationForDrivers10.0</PlatformToolset>
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-  </PropertyGroup>
-  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <TargetVersion>Windows10</TargetVersion>
-    <UseDebugLibraries>True</UseDebugLibraries>
-    <DriverTargetPlatform>Universal</DriverTargetPlatform>
-    <DriverType />
-    <PlatformToolset>WindowsApplicationForDrivers10.0</PlatformToolset>
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <PropertyGroup>
-    <OutDir>$(IntDir)</OutDir>
-  </PropertyGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
-  </ImportGroup>
-  <ItemGroup Label="WrappedTaskItems" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <Link>
-      <EntryPointSymbol Condition="'$(Platform)'=='win32'">HalExtensionInit@12</EntryPointSymbol>
-      <EntryPointSymbol Condition="'$(Platform)'!='win32'">HalExtensionInit</EntryPointSymbol>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <Link>
-      <EntryPointSymbol Condition="'$(Platform)'=='win32'">HalExtensionInit@12</EntryPointSymbol>
-      <EntryPointSymbol Condition="'$(Platform)'!='win32'">HalExtensionInit</EntryPointSymbol>
-    </Link>
-  </ItemDefinitionGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <TargetName>HalExtSampleDma</TargetName>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <TargetName>HalExtSampleDma</TargetName>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <ResourceCompile>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
-    </ResourceCompile>
-    <ClCompile>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
-      <TreatWarningAsError>true</TreatWarningAsError>
-      <WarningLevel>Level4</WarningLevel>
-      <AdditionalOptions>%(AdditionalOptions) /J</AdditionalOptions>
-      <ExceptionHandling>
-      </ExceptionHandling>
-    </ClCompile>
-    <Midl>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
-    </Midl>
-    <Link>
-      <AdditionalDependencies>%(AdditionalDependencies);halextlib.lib;libcntpr.lib;bufferoverflowfastfailk.lib</AdditionalDependencies>
-      <AdditionalOptions>%(AdditionalOptions)                           -merge:PAGECONST=PAGE                    -merge:INITCONST=INIT                    /LARGEADDRESSAWARE</AdditionalOptions>
-      <ModuleDefinitionFile>HalExtSampleDma.def</ModuleDefinitionFile>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <ResourceCompile>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
-    </ResourceCompile>
-    <ClCompile>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
-      <TreatWarningAsError>true</TreatWarningAsError>
-      <WarningLevel>Level4</WarningLevel>
-      <AdditionalOptions>%(AdditionalOptions) /J</AdditionalOptions>
-      <ExceptionHandling>
-      </ExceptionHandling>
-    </ClCompile>
-    <Midl>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
-    </Midl>
-    <Link>
-      <AdditionalDependencies>%(AdditionalDependencies);halextlib.lib;libcntpr.lib;bufferoverflowfastfailk.lib</AdditionalDependencies>
-      <AdditionalOptions>%(AdditionalOptions)                           -merge:PAGECONST=PAGE                    -merge:INITCONST=INIT                    /LARGEADDRESSAWARE</AdditionalOptions>
-      <ModuleDefinitionFile>HalExtSampleDma.def</ModuleDefinitionFile>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="HalExtSampleDma.c" />
-    <ResourceCompile Include="HalExtSampleDma.rc" />
-  </ItemGroup>
-  <ItemGroup>
-    <Inf Exclude="@(Inf)" Include="*.inf" />
-    <FilesToPackage Include="$(TargetPath)" Condition="'$(ConfigurationType)'=='Driver' or '$(ConfigurationType)'=='DynamicLibrary'" />
-  </ItemGroup>
-  <ItemGroup>
-    <None Exclude="@(None)" Include="*.txt;*.htm;*.html" />
-    <None Exclude="@(None)" Include="*.ico;*.cur;*.bmp;*.dlg;*.rct;*.gif;*.jpg;*.jpeg;*.wav;*.jpe;*.tiff;*.tif;*.png;*.rc2" />
-    <None Exclude="@(None)" Include="*.def;*.bat;*.hpj;*.asmx" />
-  </ItemGroup>
-  <ItemGroup>
-    <ClInclude Exclude="@(ClInclude)" Include="*.h;*.hpp;*.hxx;*.hm;*.inl;*.xsd" />
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-</Project>
\ No newline at end of file
diff --git a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.vcxproj.Filters b/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.vcxproj.Filters
deleted file mode 100644
index 0e78975f..00000000
--- a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDma.vcxproj.Filters
+++ /dev/null
@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup>
-    <Filter Include="Source Files">
-      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx;*</Extensions>
-      <UniqueIdentifier>{C49AD628-A169-4113-A58C-7869B002B124}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="Header Files">
-      <Extensions>h;hpp;hxx;hm;inl;inc;xsd</Extensions>
-      <UniqueIdentifier>{4066A1BF-4F9E-4F43-B6C3-3DEEDE4A553C}</UniqueIdentifier>
-    </Filter>
-    <Filter Include="Resource Files">
-      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms;man;xml</Extensions>
-      <UniqueIdentifier>{CD82A108-349C-4687-A02C-C816B6A47307}</UniqueIdentifier>
-    </Filter>
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="HalExtSampleDma.c">
-      <Filter>Source Files</Filter>
-    </ClCompile>
-    <None Include="HalExtSampleDma.def">
-      <Filter>Source Files</Filter>
-    </None>
-  </ItemGroup>
-  <ItemGroup>
-    <ResourceCompile Include="HalExtSampleDma.rc">
-      <Filter>Resource Files</Filter>
-    </ResourceCompile>
-  </ItemGroup>
-</Project>
\ No newline at end of file
diff --git a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDmaReadme.txt b/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDmaReadme.txt
deleted file mode 100644
index 05e44648..00000000
--- a/general/HalExtensionSample/HalExtSampleDma/HalExtSampleDmaReadme.txt
+++ /dev/null
@@ -1,139 +0,0 @@
-Copyright (c) 2011 Microsoft Corporation
-
-Author: Cody Hartwig (chartwig) 9-Jun-2011
-
-------
-
-This document describes the chDMA controller.  chDMA is a 32-channel,
-32-request line DMA controller for which a sample HAL extension has been
-implemented.  This document also describes a sample peripheral device and the
-configuration required for use with the DMA controller.
-
-General Controller Information
-==============================
-
-Base Physical Address                     0x70001000
-GSI                                       0x27
-Number of Channels                        32
-Number of Request Lines                   32
-Cache Coherent                            No
-Supports ReadDmaCounter                   Yes
-
-
-Register Layout
-===============
-
-CH_DMA_CONTROL (Offset: 0x00, RW, Reset: 0x00000000)
---------------
-
-This register sets controller-wide settings such as controller enable.
-
-Bit              Function
-31               Controller Enable: 1-enable, 0-disable
-30-0             Reserved
-
-CH_DMA_STATUS (Offset: 0x04, RW1C, Reset: 0x00000000)
--------------
-
-This register describes which channels are currently asserting an interrupt.
-Interrupts are cleared by writing 1 to the appropriate bit.
-
-Bit                 Function
-31                  Channel 31 interrupt status
-30                  Channel 30 interrupt status
-..
-0                   Channel 0 interrupt status
-
-CH_DMA_INTERRUPT_MASK (Offset: 0x08, RW, Reset: 0x00000000)
----------------------
-
-A channel interrupt is unmasked by writing 1 to the corresponding bit in this
-register.
-
-Bit                 Function
-31                  Channel 31 interrupt mask
-30                  Channel 30 interrupt mask
-..
-0                   Channel 0 interrupt mask
-
-CH_DMA_CHANNEL_i_CONTROL (Offset: 0x10 + (i * 0x10), RW, Reset:0x00000000)
-------------------------
-
-This register controls per channel operation of the controller.  A transfer
-may begin once the enable bit is set.  When the enable bit is cleared, the
-current burst is finished and the transfer will stop.
-
-Bit               Function
-31                Enable
-30                Interrupt on completion
-29-28             Device Width:
-                      0b00 - 8-bit
-                      0b01 - 16-bit
-                      0b10 - 32-bit
-                      0b11 - Reserved
-27-26             Burst Size:
-                      0b00 - 1 Word
-                      0b01 - 2 Word
-                      0b10 - 4 Word
-                      0b11 - 8 Word
-25                    Flow Control: 1-enable, 0-disable
-24                    Loop: 1-repeat transfer, 0-transfer once
-23-19             Request line trigger
-18                Transfer Direction: 1-device to mem, 0-mem to device
-17-16             Reserved
-15-0              Transfer Length
-
-CH_DMA_CHANNEL_i_MEM_PTR (Offset: 0x14 + (i * 0x10), RW, Reset: 0x00000000)
-------------------------
-
-This register sets the memory-side address of the transfer.
-
-Bit               Function
-31-0              Memory-side address
-
-CH_DMA_CHANNEL_i_DEV_PTR (Offset: 0x18 + (i * 0x10), RW, Reset: 0x00000000)
-------------------------
-
-This register sets the device-side address of the transfer.
-
-Bit               Function
-31-0              Device-side address
-
-CH_DMA_CHANNEL_i_STATUS (Offset: 0x1c + (i * 0x10), RO, Reset: 0x00000000)
------------------------
-
-This register reports transfer status.
-
-Bit               Function
-31                Channel Busy
-30-16             Reserved
-15-0              Bytes Transferred
-
-
-
-Programming Model
-=================
-Normal operation of the DMA controller is achieved by the following steps:
-
-1. Enable the controller by writing 0x80000000 to the CH_DMA_CONTROL register.
-2. Unmask channel 0's interrupt by or'ing 0x1 with the CH_DMA_INTERRUPT_MASK
-   register
-3. Program the memory-side transfer address into the CH_DMA_CHANNEL_0_MEM_PTR
-   register.
-4. Program the device-side transfer address into the CH_DMA_CHANNEL_0_DEV_PTR
-   register.
-5. Program the CH_DMA_CHANNEL_0_CONTROL register.  This enables the channel.
-
-
-Peripheral Information
-======================
-
-For the purposes of this sample, the chDMA controller is connected to a single
-UAART.  This UART requires the following DMA controller configuration to
-work properly:
-
-Parameter              Value
-Bus Width              8 bits
-Burst Size             1 Word
-Request Line           0x15
-Flow Control           Enabled
diff --git a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.c b/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.c
deleted file mode 100644
index f45b32b6..00000000
--- a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.c
+++ /dev/null
@@ -1,763 +0,0 @@
-/*++
-
-Copyright (c) 2011 Microsoft Corporation
-
-Module Name:
-
-    HalExtSampleTimers.c
-
-Abstract:
-
-    This file implements a HAL Extension Module for the fictitious EGTimer.
-
-Author:
-
-    Evan Green (evgreen) 8-Jan-2011
-
---*/
-
-//
-// ------------------------------------------------------------------- Includes
-//
-
-#include <nthalext.h>
-
-//
-// -------------------------------------------------------------- Specification
-//
-
-//
-// The EGTimer is a fast-access low-latency timer designed for high-performance
-// timekeeping operations. It consists of 4 timers with identical register
-// definitions offset from each other. Each timer contains a 32-bit
-// counter and is capable of generating one-shot or periodic interrupts using
-// a "Reload Value" register. The counter counts up and generates an interrupt
-// once it rolls over from its maximum value of 0xFFFFFFFF to 0 if the
-// interrupt enable bit is set. The counter always runs at a frequency of
-// 10MHz. The register layout of the timer appears below:
-//
-// Offset   Register                    Size
-// 0x00     Timer0_Control              4
-// 0x04     Timer0_ReloadValue          4
-// 0x08     Timer0_CurrentCount         4
-// 0x0C     Timer0_InterruptAcknowledge 4
-// 0x10     Timer1_Control              4
-// 0x14     Timer1_ReloadValue          4
-// 0x18     Timer1_CurrentCount         4
-// 0x1C     Timer1_InterruptAcknowledge 4
-// 0x20     Timer2_Control              4
-// 0x24     Timer2_ReloadValue          4
-// 0x28     Timer2_CurrentCount         4
-// 0x2C     Timer2_InterruptAcknowledge 4
-// 0x30     Timer3_Control              4
-// 0x34     Timer3_ReloadValue          4
-// 0x38     Timer3_CurrentCount         4
-// 0x3C     Timer3_InterruptAcknowledge 4
-//
-// Register Descriptions:
-//
-// TimerN_Control - This is a Read/Write register containing a bitfield of
-//     control values that govern the timer's operation. The initial value of
-//     this register at reset is 0. The defined bits are listed below. 0 should
-//     always be written to undefined bits, and will always be read as 0.
-//
-//     Bit    Function
-//     31-3   Reserved. Read as 0, always write 0 to maintain future
-//                compatibility.
-//
-//     2      Periodic. When set to 1, the timer will automatically reload
-//                itself with the value in the ReloadValue register.
-//                When set to 0, the timer's counter will be disabled by
-//                clearing the "Counter Enabled" bit when it overflows
-//                from 0xFFFFFFFF to 0.
-//
-//     1      Interrupt Enable. When set to 1, the timer will generate an
-//                interrupt when the counter overflows from 0xFFFFFFFF to 0.
-//                When set to 0, the timer will not generate an interrupt upon
-//                overflow.
-//
-//     0      Counter Enable. When set to 1, the counter is enabled and
-//                running. When set to 0, the counter is disable and will not
-//                run.
-//
-// TimerN_ReloadValue - This is a Read/Write register containing the value to
-//     reload the counter with when the timer is in Periodic mode and overflows
-//     from 0xFFFFFFFF to 0.  Writing a value to this register also immediately
-//     writes the same value to the current count register. The initial value
-//     of this register at reset is 0.
-//
-// TimerN_CurrentCount - This is a Read/Write register containg the current
-//     value of the counter. This value can be overwritten at any time. It is
-//     also overwritten by a write to the ReloadValue register. The initial
-//     value of this register at reset is 0.
-//
-// TimerN_InterruptAcknowledge - This is a Read/Write register. On reads, it
-//     returns 1 if an interrupt is pending that has yet to be acknowledged.
-//     Writing a value of 0 clears the pending interrupt. This initial value of
-//     this register at reset is 0.
-//
-
-//
-// ---------------------------------------------------------------- Definitions
-//
-
-//
-// Define the total size of the register block, which is 1 page.
-//
-
-#define EGTIMER_BLOCK_SIZE 0x1000
-
-//
-// Define the size of one timer's registers.
-//
-
-#define EGTIMER_SIZE 0x10
-
-//
-// Define the total number of timers.
-//
-
-#define EGTIMER_COUNT 4
-
-//
-// Define the timer's bit width.
-//
-
-#define EGTIMER_BIT_WIDTH 32
-
-//
-// Define the counter's frequency, in Hertz.
-//
-
-#define EGTIMER_FREQUENCY 10000000
-
-//
-// Define bits for the control register.
-//
-
-#define EGTIMER_CONTROL_ENABLE           0x00000001
-#define EGTIMER_CONTROL_INTERRUPT_ENABLE 0x00000002
-#define EGTIMER_CONTROL_PERIODIC         0x00000004
-
-//
-// ------------------------------------------------------ Data Type Definitions
-//
-
-
-//
-// Define the registers and their offsets, in ULONGs.
-//
-
-typedef enum _EGTIMER_REGISTER {
-    EgTimerControl = 0,
-    EgTimerReloadValue = 1,
-    EgTimerCurrentCount = 2,
-    EgTimerInterruptAcknowledge = 3
-} EGTIMER_REGISTER, *PEGTIMER_REGISTER;
-
-//
-// Define the format of the private data structure. The TimerIndex member
-// allows the extension to pass the same functions for all timer an identify
-// which timer is being referred to.
-//
-
-typedef struct _EGTIMER_DATA {
-    ULONG TimerIndex;
-} EGTIMER_DATA, *PEGTIMER_DATA;
-
-//
-// --------------------------------------------------------------------- Macros
-//
-
-//
-// The following macros are used to read from and write to the timer. The first
-// parameter is the offset from the entire timer block where this timer is
-// found (which timer), and the second parameter is the register to read or
-// write. For the write function, the third parameter is the value to write.
-// READ_REGISTER_ULONG and WRITE_REGISTER_ULONG should always be used to
-// ensure that the proper barriers and flushes are in place for doing direct
-// hardware accesses.
-//
-
-#define READ_EGTIMER(_TimerIndex, _Register)           \
-    READ_REGISTER_ULONG((PULONG)((PUCHAR)EgTimerBase + \
-                                 ((_TimerIndex) * EGTIMER_SIZE)) + (_Register))
-
-#define WRITE_EGTIMER(_TimerIndex, _Register, _Value)                   \
-    WRITE_REGISTER_ULONG((PULONG)((PUCHAR)EgTimerBase +                 \
-                                  ((_TimerIndex) * EGTIMER_SIZE)) +     \
-                                  (_Register),                          \
-                                  _Value)
-
-//
-// ----------------------------------------------- Internal Function Prototypes
-//
-
-NTSTATUS
-EgTimerRegister (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup
-    );
-
-_Function_class_(TIMER_INITIALIZE)
-NTSTATUS
-EgTimerInitialize (
-    __in PVOID TimerData
-    );
-
-_Function_class_(TIMER_QUERY_COUNTER)
-ULONGLONG
-EgTimerQueryCounter (
-    __in PVOID TimerData
-    );
-
-_Function_class_(TIMER_ACKNOWLEDGE_INTERRUPT)
-VOID
-EgTimerAcknowledgeInterrupt (
-    __in PVOID TimerData
-    );
-
-_Function_class_(TIMER_ARM_TIMER)
-NTSTATUS
-EgTimerArm (
-    __in PVOID TimerData,
-    __in TIMER_MODE Mode,
-    __in ULONGLONG TickCount
-    );
-
-_Function_class_(TIMER_STOP)
-VOID
-EgTimerStop (
-    __in PVOID TimerData
-    );
-
-//
-// -------------------------------------------------------------------- Globals
-//
-
-//
-// Define the physical address of the timer block. This information can either
-// be hardcoded like it is here or fetched out of the CSRT resource passed to
-// the extension.
-//
-
-ULONGLONG EgTimerPhysicalAddress = 0x0BADF00D;
-
-//
-// Define the GSIVs for each timer's interrupt. This is also a candidate for
-// information to be retrieved out of the CSRT.
-//
-
-ULONG EgTimerGsi[EGTIMER_COUNT] = {
-    32,
-    33,
-    34,
-    35
-};
-
-//
-// Define the mapped virtual address of the timer block.
-//
-
-PVOID EgTimerBase = NULL;
-
-//
-// ------------------------------------------------------------------ Functions
-//
-
-NTSTATUS
-AddResourceGroup (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup
-    )
-
-/*++
-
-Routine Description:
-
-    This routine identifies and registers all of the Resource Descriptors
-    in the specified Resource Group.
-
-Arguments:
-
-    Handle - Supplies the HAL Extension handle which must be passed to other
-        HAL Extension APIs.
-
-    ResourceGroup - Supplies a pointer to the Resource Group which the
-        HAL Extension has been installed on.
-
-Return Value:
-
-    NTSTATUS code.
-
---*/
-
-{
-
-    NTSTATUS Status;
-
-    //
-    // Register the main timer block.
-    //
-
-    Status = EgTimerRegister(Handle, ResourceGroup);
-    if (!NT_SUCCESS(Status)) {
-        goto AddResourceGroupEnd;
-    }
-
-    Status = STATUS_SUCCESS;
-
-AddResourceGroupEnd:
-    return Status;
-}
-
-//
-// --------------------------------------------------------- Internal Functions
-//
-
-NTSTATUS
-EgTimerRegister (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup
-    )
-
-/*++
-
-Routine Description:
-
-    This routine registers the EG Timer hardware.
-
-Arguments:
-
-    Handle - Supplies the HAL Extension handle which must be passed to other
-        HAL Extension APIs.
-
-    ResourceGroup - Supplies a pointer to the Resource Group which the
-        HAL Extension has been installed on.
-
-Return Value:
-
-    NT status code.
-
---*/
-
-{
-
-    EGTIMER_DATA InternalData;
-    TIMER_INITIALIZATION_BLOCK NewTimer;
-    PHYSICAL_ADDRESS PhysicalAddress;
-    CSRT_RESOURCE_DESCRIPTOR_HEADER ResourceDescriptorHeader;
-    NTSTATUS Status;
-    ULONG TimerIndex;
-
-    //
-    // DEV HACK: Makeup a resource type until we get correct CSRT parsing.
-    //
-
-    ResourceDescriptorHeader.Type = CSRT_RD_TYPE_TIMER;
-    ResourceDescriptorHeader.Subtype = CSRT_RD_SUBTYPE_TIMER;
-    ResourceDescriptorHeader.Length = sizeof(CSRT_RESOURCE_DESCRIPTOR_HEADER);
-
-    //
-    // Register the entire timer block's address usage with the HAL. This
-    // address space should be shown to the HAL as reserved even if the timer
-    // is not going to be registered or used so that the system knows that
-    // region of *physical* address space is occupied.
-    //
-
-    PhysicalAddress.QuadPart = EgTimerPhysicalAddress;
-    Status = HalRegisterPermanentAddressUsage(PhysicalAddress,
-                                              EGTIMER_BLOCK_SIZE);
-
-    if (!NT_SUCCESS(Status)) {
-        goto RegisterEnd;
-    }
-
-    //
-    // Register each timer with the HAL.
-    //
-
-    for (TimerIndex = 0; TimerIndex < EGTIMER_COUNT; TimerIndex += 1) {
-
-        //
-        // Initialize the timer structure.
-        //
-
-        RtlZeroMemory(&NewTimer, sizeof(TIMER_INITIALIZATION_BLOCK));
-        RtlZeroMemory(&InternalData, sizeof(EGTIMER_DATA));
-        INITIALIZE_TIMER_HEADER(&NewTimer);
-        NewTimer.CounterBitWidth = EGTIMER_BIT_WIDTH;
-        NewTimer.CounterFrequency = EGTIMER_FREQUENCY;
-
-        //
-        // Set the pointer to the internal data and its size. The pointer can
-        // be the same for each timer (and a local variable) because a *copy*
-        // of this data will be made for each timer registered. This is the
-        // extensions only chance to dynamically allocate memory.
-        //
-
-        NewTimer.InternalData = &InternalData;
-        NewTimer.InternalDataSize = sizeof(EGTIMER_DATA);
-        NewTimer.Interrupt.Mode = LevelSensitive;
-        NewTimer.Interrupt.Polarity = InterruptActiveHigh;
-
-        //
-        // This must be set to indicate that this is a custom third-party timer.
-        // The HAL will fail the registration if this is not set correctly.
-        //
-
-        NewTimer.KnownType = TimerUnknown;
-
-        //
-        // The timer does not support a divisor. The GSI data can be hardcoded
-        // like it is here or pulled out of the resource from the CSRT table.
-        //
-
-        NewTimer.MaxDivisor = 1;
-        NewTimer.Interrupt.Gsi = EgTimerGsi[TimerIndex];
-        NewTimer.FunctionTable.Initialize = EgTimerInitialize;
-        NewTimer.FunctionTable.QueryCounter = EgTimerQueryCounter;
-        NewTimer.FunctionTable.AcknowledgeInterrupt =
-                                                   EgTimerAcknowledgeInterrupt;
-
-        NewTimer.FunctionTable.ArmTimer = EgTimerArm;
-        NewTimer.FunctionTable.Stop = EgTimerStop;
-        NewTimer.Capabilities = TIMER_COUNTER_READABLE |
-                                TIMER_ONE_SHOT_CAPABLE |
-                                TIMER_PERIODIC_CAPABLE |
-                                TIMER_GENERATES_LINE_BASED_INTERRUPTS;
-
-        InternalData.TimerIndex = TimerIndex;
-        ResourceDescriptorHeader.Uid = TimerIndex;
-        Status = RegisterResourceDescriptor(Handle,
-                                            ResourceGroup,
-                                            &ResourceDescriptorHeader,
-                                            &NewTimer);
-
-        if (!NT_SUCCESS(Status)) {
-            goto RegisterEnd;
-        }
-    }
-
-    Status = STATUS_SUCCESS;
-
-RegisterEnd:
-    return Status;
-}
-
-_Function_class_(TIMER_INITIALIZE)
-NTSTATUS
-EgTimerInitialize (
-    __in PVOID TimerData
-    )
-
-/*++
-
-Routine Description:
-
-    This routine is responsible for initializing the timer hardware. This is
-    guaranteed to be the first timer routine called by the HAL. It must prepare
-    the timer for use by beginning the timer's counter ticking if the counter
-    is readable, setting the intial input clock divisor to 1 if applicable,
-    and masking all interrupts. If the timer's stop routine is called, this
-    routine will be called before the timer is queried or armed again. It will
-    not be called between every rearming of the timer.
-
-    This routine will not be called concurrently with any other calls to
-    this HAL Timer extension. For per-processor timers, this routine will be
-    called once on each processor. A failure on any processor blocks the timer's
-    use on all processors.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context. The contents
-        of this pointer were specified when the timer was initially registered,
-        and may be modified inside this routine. The HAL does not interpret any
-        data deferenced from this pointer.
-
-Return Value:
-
-    Returns an NT status code indicating success or failure. If a successful
-    status code is returned then the HAL may subsequently call further routines
-    in this HAL extension to query or arm the timer. If a failure code is
-    returned, this HAL extension will not attempt to use this timer unless the
-    Initialize routine is called again and succeeds.
-
---*/
-
-{
-
-    PHYSICAL_ADDRESS PhysicalAddress;
-    ULONG RegisterValue;
-    NTSTATUS Status;
-    PEGTIMER_DATA Timer;
-
-    Timer = (PEGTIMER_DATA)TimerData;
-
-    //
-    // Map the timer if no one has done that yet.
-    //
-
-    if (EgTimerBase == NULL) {
-        PhysicalAddress.QuadPart = EgTimerPhysicalAddress;
-        EgTimerBase = HalMapIoSpace(PhysicalAddress,
-                                    EGTIMER_BLOCK_SIZE,
-                                    MmNonCached);
-
-        if (EgTimerBase == NULL) {
-            Status = STATUS_INSUFFICIENT_RESOURCES;
-            goto InitializeEnd;
-        }
-    }
-
-    //
-    // Start the counter ticking in free running mode, and mask all interrupts.
-    // The counter doesn't necessarily need to be reset to 0.
-    //
-
-    WRITE_EGTIMER(Timer->TimerIndex, EgTimerReloadValue, 0);
-    RegisterValue = EGTIMER_CONTROL_ENABLE | EGTIMER_CONTROL_PERIODIC;
-    WRITE_EGTIMER(Timer->TimerIndex, EgTimerControl, RegisterValue);
-    Status = STATUS_SUCCESS;
-
-InitializeEnd:
-    return Status;
-}
-
-_Function_class_(TIMER_QUERY_COUNTER)
-ULONGLONG
-EgTimerQueryCounter (
-    __in PVOID TimerData
-    )
-
-/*++
-
-Routine Description:
-
-    This routine queries the timer hardware and retrieves the current counter
-    value.
-
-    Timers are assumed to always count *up*. If the actual timer hardware counts
-    down, then this routine should subtract the current count from the maximum
-    counter value so that values appear to count up. This routine may be called
-    concurrently on multiple processors and must be reentrant. This routine is
-    extremely performance sensitive, as it may be used to back the system
-    performance counter.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context, whose
-        initial content was supplied when the timer was registered.
-
-Return Value:
-
-    Returns the hardware's current count.
-
---*/
-
-{
-
-    PEGTIMER_DATA Timer;
-
-    Timer = (PEGTIMER_DATA)TimerData;
-
-    return READ_EGTIMER(Timer->TimerIndex, EgTimerCurrentCount);
-}
-
-_Function_class_(TIMER_ACKNOWLEDGE_INTERRUPT)
-VOID
-EgTimerAcknowledgeInterrupt (
-    __in PVOID TimerData
-    )
-
-/*++
-
-Routine Description:
-
-    This routine performs any actions necessary to acknowledge and quiesce a
-    timer interrupt. For per-processor timers, this routine may be called
-    concurrently on multiple processors. This routine will be called on every
-    timer interrupt at the hardware priority level of that interrupt, so this
-    routine is extremely performance sensitive. For timers running in
-    pseudo-periodic mode, this routine must rearm the timer for the same
-    interval as it was armed with without introducing delay into the interrupt
-    interval. Only deadline-based timers support pseudo-periodic mode.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context, whose
-        initial content was supplied when the timer was registered.
-
-Return Value:
-
-    None.
-
---*/
-
-{
-
-    PEGTIMER_DATA Timer;
-
-    Timer = (PEGTIMER_DATA)TimerData;
-
-    //
-    // Acknowledge the interrupt by writing to the interrupt acknowledge
-    // register.
-    //
-
-    WRITE_EGTIMER(Timer->TimerIndex, EgTimerInterruptAcknowledge, 0);
-    return;
-}
-
-_Function_class_(TIMER_ARM_TIMER)
-NTSTATUS
-EgTimerArm (
-    __in PVOID TimerData,
-    __in TIMER_MODE Mode,
-    __in ULONGLONG TickCount
-    )
-
-/*++
-
-Routine Description:
-
-    This routine arms a timer to fire an interrupt after the given number of
-    timer ticks. For timers that only interrupt on rollovers, this simply
-    enables the interrupt, the tick count parameter is ignored. If the timer
-    is currently armed for a different mode or tick count, this call is
-    expected to replace that programming. This routine will not get called
-    concurrently with other timer calls, except on per-processor timers, where
-    it may get called concurrently on different processors.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context, whose
-        initial content was supplied when the timer was registered.
-
-    Mode - Supplies the mode to arm the timer in, which will be one of the
-        modes the HAL extension advertised support for when registering the
-        timer. The modes are as follows:
-
-        OneShot - Arms the timer to fire the given number of ticks from now.
-            Only one interrupt is expected to come in. The HAL does not make
-            assumptions on whether or not the expiration of this interrupt
-            causes the counter to stop. The Query Counter routine will not be
-            called while a timer is armed to fire an interrupt.
-
-        Periodic - Arms the timer to fire periodically with an interval of the
-            given number of ticks. The first interrupt should happen
-            approximately the given number of ticks from when the arm timer
-            function was invoked.
-
-        PseudoPeriodic - Arms the timer with the same functional behavior as
-            periodic mode, with the knowledge that the timer will have to rearm
-            itself during the acknowledge interrupt routine. This mode is
-            expected to have slightly worse performance than pure periodic mode,
-            but is expected to generate periodic interrupts at the exact rate
-            specified.
-
-    TickCount - Supplies the number of ticks from now that the timer should
-        assert its interrupt in. For timers that are only capable of
-        interrupting on rollovers from their maximum value to 0, this parameter
-        is ignored.
-
-Return Value:
-
-    Returns and NTSTATUS code indicating success or failure. If the timer
-    returns success, then the interrupt is expected to come in the specified
-    number of ticks from when the function was called, with a tolerance of
-    however long the function took to execute. If the routine fails, then no
-    timer routines will be called again until the timer Initialize routine is
-    called again and succeeds. In most cases, returning a failure code results
-    in a system bugcheck.
-
---*/
-
-{
-
-    ULONG ControlRegister;
-    PEGTIMER_DATA Timer;
-
-    Timer = (PEGTIMER_DATA)TimerData;
-
-    NT_ASSERT(TickCount != 0);
-    NT_ASSERT(TickCount <= 0xFFFFFFFF);
-    NT_ASSERT(Mode != TimerModePseudoPeriodic);
-
-    //
-    // This will never occur.
-    //
-
-    if ((TickCount > 0xFFFFFFFF) || (TickCount == 0)) {
-        return STATUS_INVALID_PARAMETER;
-    }
-
-    ControlRegister = EGTIMER_CONTROL_ENABLE | EGTIMER_CONTROL_INTERRUPT_ENABLE;
-    if (Mode == TimerModePeriodic) {
-        ControlRegister |= EGTIMER_CONTROL_PERIODIC;
-    }
-
-    //
-    // Disable the timer while it's being programmed to avoid spurious
-    // interrupts.
-    //
-
-    WRITE_EGTIMER(Timer->TimerIndex, EgTimerControl, 0);
-
-    //
-    // Write the reload register to set both the current count value and the
-    // reload value if the interrupt is periodic.
-    //
-
-    WRITE_EGTIMER(Timer->TimerIndex,
-                  EgTimerReloadValue,
-                  0 - (ULONG)TickCount);
-
-    //
-    // Enable the timer.
-    //
-
-    WRITE_EGTIMER(Timer->TimerIndex, EgTimerControl, ControlRegister);
-    return STATUS_SUCCESS;
-}
-
-_Function_class_(TIMER_STOP)
-VOID
-EgTimerStop (
-    __in PVOID TimerData
-    )
-
-/*++
-
-Routine Description:
-
-    This routine stops a timer from ticking. After this function returns, the
-    timer should not generate any more interrupts, and reads to its counter
-    might return the same value every time.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context, whose
-        initial content was supplied when the timer was registered.
-
-Return Value:
-
-    None, this function must succeed.
-
---*/
-
-{
-
-    PEGTIMER_DATA Timer;
-
-    Timer = (PEGTIMER_DATA)TimerData;
-
-    //
-    // All that technically needs to be done to stop the timer from firing is
-    // to clear the interrupt enable bit. Stopping the timer entirely works too.
-    //
-
-    WRITE_EGTIMER(Timer->TimerIndex, EgTimerControl, 0);
-    return;
-}
-
diff --git a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.def b/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.def
deleted file mode 100644
index 786620d2..00000000
--- a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.def
+++ /dev/null
@@ -1,2 +0,0 @@
-LIBRARY HalExtSampleTimers
-
diff --git a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.rc b/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.rc
deleted file mode 100644
index 89069fbd..00000000
--- a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.rc
+++ /dev/null
@@ -1,10 +0,0 @@
-#include "verrsrc.h"
-#include <ntverp.h>
-
-#define VER_FILETYPE                VFT_DLL
-#define VER_FILESUBTYPE             VFT_UNKNOWN
-#define VER_FILEDESCRIPTION_STR     "HAL Extension Sample - Timers"
-#define VER_INTERNALNAME_STR        "HalExtSampleTimers.DLL"
-#define VER_ORIGINALFILENAME_STR    "HalExtSampleTimers.DLL"
-
-#include <common.ver>
diff --git a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.vcxproj b/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.vcxproj
deleted file mode 100644
index f03fae0d..00000000
--- a/general/HalExtensionSample/HalExtSampleTimers/HalExtSampleTimers.vcxproj
+++ /dev/null
@@ -1,126 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug|Arm">
-      <Configuration>Debug</Configuration>
-      <Platform>Arm</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Arm">
-      <Configuration>Release</Configuration>
-      <Platform>Arm</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{708FC03F-4440-4AF4-B68F-5ADE99A0690B}</ProjectGuid>
-    <RootNamespace>$(MSBuildProjectName)</RootNamespace>
-    <KMDF_VERSION_MAJOR>1</KMDF_VERSION_MAJOR>
-    <Configuration Condition="'$(Configuration)' == ''">Debug</Configuration>
-    <Platform Condition="'$(Platform)' == ''">Arm</Platform>
-    <SampleGuid>{74DA088F-D0F8-4839-9BFF-3C72F7D46E64}</SampleGuid>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <TargetVersion>Windows10</TargetVersion>
-    <UseDebugLibraries>False</UseDebugLibraries>
-    <DriverTargetPlatform>Universal</DriverTargetPlatform>
-    <DriverType />
-    <PlatformToolset>WindowsApplicationForDrivers10.0</PlatformToolset>
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-  </PropertyGroup>
-  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <TargetVersion>Windows10</TargetVersion>
-    <UseDebugLibraries>True</UseDebugLibraries>
-    <DriverTargetPlatform>Universal</DriverTargetPlatform>
-    <DriverType />
-    <PlatformToolset>WindowsApplicationForDrivers10.0</PlatformToolset>
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <PropertyGroup>
-    <OutDir>$(IntDir)</OutDir>
-  </PropertyGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
-  </ImportGroup>
-  <ItemGroup Label="WrappedTaskItems" />
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diff --git a/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.c b/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.c
deleted file mode 100644
index 9a580fea..00000000
--- a/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.c
+++ /dev/null
@@ -1,825 +0,0 @@
-/*++
-
-Copyright (c) 2011 Microsoft Corporation
-
-Module Name:
-
-    HalExtSampleTimers2.c
-
-Abstract:
-
-    This file implements a HAL Extension Module for the fictitious EG2Timer.
-
-Author:
-
-    Evan Green (evgreen) 8-Jan-2011
-
---*/
-
-//
-// ------------------------------------------------------------------- Includes
-//
-
-#include <nthalext.h>
-
-//
-// -------------------------------------------------------------- Specification
-//
-
-//
-// The EG2Timer is a fast-access low latency deadline-based timer designed
-// for high-performance timekeeping operations. It consists of one counter
-// counter and three match registers against that counter. Each match register
-// consists of a 32-bit value that is compared on each clock cycle to the
-// current count value. If the values match and the match register is enabled
-// for generating an interrupt, an edge triggered interrupt will be fired. The
-// register can also be configured with an "interval" value such that the
-// match register is automatically moved forward by the given interval to
-// generate periodic interrupts. The main counter is 32 bits and runs at 15MHz.
-// The register layout of the timer block appears below.
-//
-// Offset   Register                   Size
-// 0x00     GlobalControl              4
-// 0x04     CounterValue               4
-// 0x08     Timer0_Match               4
-// 0x0C     Timer0_Interval            4
-// 0x10     Timer0_Control             4
-// 0x14     Timer1_Match               4
-// 0x18     Timer1_Interval            4
-// 0x1C     Timer1_Control             4
-// 0x20     Timer2_Match               4
-// 0x24     Timer2_Interval            4
-// 0x28     Timer2_Control             4
-//
-// Register Descriptions:
-//
-// GlobalControl - Controls global state relating to the timer block. On reset,
-//     this register's value is 0. This register is Read/Write.
-//
-//     Bit    Function
-//     31-1   Reserved. Read as 0, always write 0 to maintain future
-//                compatibility.
-//
-//     0      Enabled. When set to 1, the main counter is enabled and will
-//                count. When set to 0, the main counter is disabled and will
-//                not run.
-//
-// CounterValue - A Read/Write register containing the current value of the
-//     counter. Writes to this register must be done with caution as they do
-//     not alter or adjust the contents of the match registers. On reset, the
-//     value of this register is 0.
-//
-// TimerN_Match - A Read/Write register that contains the match value that this
-//     interrupt is primed against. When the global counter equals the match
-//     value, an interrupt will be generated. If the interrupt is set for
-//     periodic mode, the Interval value will be automatically added to the
-//     match value when the interrupt occurs. On reset, the value of this
-//     register is 0.
-//
-// TimerN_Interval - A Read/Write register that contains the periodic interval
-//     to add to the match register if the interrupt is armed for periodic
-//     mode. On reset, the value of this register is 0.
-//
-// TimerN_Control - A Read/Write register containing a bitfield that controls
-//     the behavior of the match register and associated interrupt. On reset,
-//     the value of this register is 0.
-//
-//     Bit    Function
-//     31-2   Reserved. Read as 0, always write 0 to maintain future
-//                compatibility.
-//
-//     1      Periodic. When set to 1, the value in the Interval register will
-//                automatically be added to the value in the Match register and
-//                written back to the Match register when a match occurs. When
-//                set to 0, the Match register will not change when a match
-//                occurs.
-//
-//     0      InterruptEnable. When set to 1, an interrupt will be generated
-//                when a match occurs. When set to 0, no interrupt will be
-//                generated when a match occurs. The periodic bit is still live
-//                however, the Match register will continue to get accumulated
-//                with the Interval register on matches.
-//
-
-//
-// ---------------------------------------------------------------- Definitions
-//
-
-//
-// Define the total size of the register block, which is 1 page.
-//
-
-#define EG2TIMER_BLOCK_SIZE 0x1000
-
-//
-// Define the size of one timer's match register block, in ULONGs.
-//
-
-#define EG2MATCH_SIZE 3
-
-//
-// Define the total number of match registers.
-//
-
-#define EG2MATCH_COUNT 3
-
-//
-// Define the timer's bit width.
-//
-
-#define EG2TIMER_BIT_WIDTH 32
-
-//
-// Define the counter's frequency, in Hertz.
-//
-
-#define EG2TIMER_FREQUENCY 15000000
-
-//
-// Define the global control bits.
-//
-
-#define EG2TIMER_GLOBAL_CONTROL_ENABLE    0x00000001
-
-//
-// Define bits for the control register.
-//
-
-#define EG2TIMER_MATCH_INTERRUPT_ENABLE 0x00000001
-#define EG2TIMER_MATCH_PERIODIC         0x00000002
-
-//
-// Define the special offset used to indicate this timer is the counter
-// itself.
-//
-
-#define EG2TIMER_COUNTER_OFFSET 0xFFFFFFFF
-
-//
-// ------------------------------------------------------ Data Type Definitions
-//
-
-
-//
-// Define the registers and their offsets, in ULONGs.
-//
-
-typedef enum _EG2TIMER_REGISTER {
-    Eg2TimerGlobalControl = 0,
-    Eg2TimerCurrentCount = 1,
-    Eg2TimerMatch = 2,
-    Eg2TimerInterval = 3,
-    Eg2TimerControl = 4
-} EG2TIMER_REGISTER, *PEG2TIMER_REGISTER;
-
-//
-// Define the format of the private data structure. The offset member stores the
-// offset to the match register, in ULONGs. The value 0 is reserved for the
-// global counter.
-//
-
-typedef struct _EG2TIMER_DATA {
-    ULONG Offset;
-    TIMER_MODE Mode;
-    ULONG Period;
-} EG2TIMER_DATA, *PEG2TIMER_DATA;
-
-//
-// --------------------------------------------------------------------- Macros
-//
-
-//
-// The following macros are used to read from and write to the timer. The first
-// parameter is the offset in ULONGs to apply to the requested register. The
-// second parameter is the register to read or write. For write functions, the
-// third parameter is the value to write.
-//
-// READ_REGISTER_ULONG and WRITE_REGISTER_ULONG should always be used to
-// ensure that the proper barriers and flushes are in place for doing direct
-// hardware accesses.
-//
-
-#define READ_EG2TIMER(_TimerOffset, _Register)           \
-    READ_REGISTER_ULONG((PULONG)Eg2TimerBase + (_TimerOffset) + (_Register))
-
-#define WRITE_EG2TIMER(_TimerOffset, _Register, _Value)                       \
-    WRITE_REGISTER_ULONG((PULONG)Eg2TimerBase + (_TimerOffset) + (_Register), \
-                         (_Value))
-
-//
-// ----------------------------------------------- Internal Function Prototypes
-//
-
-NTSTATUS
-Eg2TimerRegister (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup
-    );
-
-_Function_class_(TIMER_INITIALIZE)
-NTSTATUS
-Eg2TimerInitialize (
-    __in PVOID TimerData
-    );
-
-_Function_class_(TIMER_QUERY_COUNTER)
-ULONGLONG
-Eg2TimerQueryCounter (
-    __in PVOID TimerData
-    );
-
-_Function_class_(TIMER_ACKNOWLEDGE_INTERRUPT)
-VOID
-Eg2TimerAcknowledgeInterrupt (
-    __in PVOID TimerData
-    );
-
-_Function_class_(TIMER_ARM_TIMER)
-NTSTATUS
-Eg2TimerArm (
-    __in PVOID TimerData,
-    __in TIMER_MODE Mode,
-    __in ULONGLONG TickCount
-    );
-
-_Function_class_(TIMER_STOP)
-VOID
-Eg2TimerStop (
-    __in PVOID TimerData
-    );
-
-//
-// -------------------------------------------------------------------- Globals
-//
-
-//
-// Define the physical address of the timer block. This information can either
-// be hardcoded like it is here or fetched out of the CSRT resource passed to
-// the extension.
-//
-
-ULONGLONG Eg2TimerPhysicalAddress = 0xBEEF7AC0;
-
-//
-// Define the GSIVs for each timer's interrupt. This is also a candidate for
-// information to be retrieved out of the CSRT.
-//
-
-ULONG Eg2TimerGsi[EG2MATCH_COUNT] = {
-    40,
-    41,
-    42,
-};
-
-//
-// Define the mapped virtual address of the timer block.
-//
-
-PVOID Eg2TimerBase = NULL;
-
-//
-// ------------------------------------------------------------------ Functions
-//
-
-NTSTATUS
-AddResourceGroup (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup
-    )
-
-/*++
-
-Routine Description:
-
-    This routine identifies and registers all of the Resource Descriptors
-    in the specified Resource Group.
-
-Arguments:
-
-    Handle - Supplies the HAL Extension handle which must be passed to other
-        HAL Extension APIs.
-
-    ResourceGroup - Supplies a pointer to the Resource Group which the
-        HAL Extension has been installed on.
-
-Return Value:
-
-    NTSTATUS code.
-
---*/
-
-{
-
-    NTSTATUS Status;
-
-    //
-    // Register the main timer block.
-    //
-
-    Status = Eg2TimerRegister(Handle, ResourceGroup);
-    if (!NT_SUCCESS(Status)) {
-        goto AddResourceGroupEnd;
-    }
-
-    Status = STATUS_SUCCESS;
-
-AddResourceGroupEnd:
-    return Status;
-}
-
-//
-// --------------------------------------------------------- Internal Functions
-//
-
-NTSTATUS
-Eg2TimerRegister (
-    __in ULONG Handle,
-    __in PCSRT_RESOURCE_GROUP_HEADER ResourceGroup
-    )
-
-/*++
-
-Routine Description:
-
-    This routine registers the EG2 Timer hardware.
-
-Arguments:
-
-    Handle - Supplies the HAL Extension handle which must be passed to other
-        HAL Extension APIs.
-
-    ResourceGroup - Supplies a pointer to the Resource Group which the
-        HAL Extension has been installed on.
-
-Return Value:
-
-    NT status code.
-
---*/
-
-{
-
-    EG2TIMER_DATA InternalData;
-    TIMER_INITIALIZATION_BLOCK NewTimer;
-    PHYSICAL_ADDRESS PhysicalAddress;
-    CSRT_RESOURCE_DESCRIPTOR_HEADER ResourceDescriptorHeader;
-    NTSTATUS Status;
-    ULONG TimerIndex;
-
-    //
-    // DEV HACK: Makeup a resource type until we get correct CSRT parsing.
-    //
-
-    ResourceDescriptorHeader.Type = CSRT_RD_TYPE_TIMER;
-    ResourceDescriptorHeader.Subtype = CSRT_RD_SUBTYPE_TIMER;
-    ResourceDescriptorHeader.Length = sizeof(CSRT_RESOURCE_DESCRIPTOR_HEADER);
-
-    //
-    // Register the entire timer block's address usage with the HAL. This
-    // address space should be shown to the HAL as reserved even if the timer
-    // is not going to be registered or used so that the system knows that
-    // region of *physical* address space is occupied.
-    //
-
-    PhysicalAddress.QuadPart = Eg2TimerPhysicalAddress;
-    Status = HalRegisterPermanentAddressUsage(PhysicalAddress,
-                                              EG2TIMER_BLOCK_SIZE);
-
-    if (!NT_SUCCESS(Status)) {
-        goto RegisterEnd;
-    }
-
-    //
-    // Register the main counter as a non-interrupt generating timer, as it can
-    // be used completely independently of the match registers as long as it
-    // is never written to.
-    //
-
-    RtlZeroMemory(&NewTimer, sizeof(TIMER_INITIALIZATION_BLOCK));
-    RtlZeroMemory(&InternalData, sizeof(EG2TIMER_DATA));
-    INITIALIZE_TIMER_HEADER(&NewTimer);
-    NewTimer.CounterBitWidth = EG2TIMER_BIT_WIDTH;
-    NewTimer.CounterFrequency = EG2TIMER_FREQUENCY;
-
-    //
-    // Set the pointer to the internal data and its size. The pointer can
-    // be the same for each timer (and a local variable) because a *copy*
-    // of this data will be made for each timer registered. This is the
-    // extensions only chance to dynamically allocate memory.
-    //
-
-    NewTimer.InternalData = &InternalData;
-    NewTimer.InternalDataSize = sizeof(EG2TIMER_DATA);
-    NewTimer.Interrupt.Mode = Latched;
-    NewTimer.Interrupt.Polarity = InterruptActiveHigh;
-
-    //
-    // This must be set to indicate that this is a custom third-party timer.
-    // The HAL will fail the registration if this is not set correctly.
-    //
-
-    NewTimer.KnownType = TimerUnknown;
-
-    //
-    // The timer does not support a divisor. The GSI data can be hardcoded
-    // like it is here or pulled out of the resource from the CSRT table.
-    // Filling in extra functions doesn't hurt as the HAL will never call
-    // anything but Initialize and QueryCounter on timers that don't
-    // generate interrupts.
-    //
-
-    NewTimer.MaxDivisor = 1;
-    NewTimer.FunctionTable.Initialize = Eg2TimerInitialize;
-    NewTimer.FunctionTable.QueryCounter = Eg2TimerQueryCounter;
-    NewTimer.FunctionTable.AcknowledgeInterrupt = Eg2TimerAcknowledgeInterrupt;
-    NewTimer.FunctionTable.ArmTimer = Eg2TimerArm;
-    NewTimer.FunctionTable.Stop = Eg2TimerStop;
-    NewTimer.Capabilities = TIMER_COUNTER_READABLE;
-    InternalData.Offset = EG2TIMER_COUNTER_OFFSET;
-    ResourceDescriptorHeader.Uid = EG2TIMER_COUNTER_OFFSET;
-    Status = RegisterResourceDescriptor(Handle,
-                                        ResourceGroup,
-                                        &ResourceDescriptorHeader,
-                                        &NewTimer);
-
-    if (!NT_SUCCESS(Status)) {
-        goto RegisterEnd;
-    }
-
-
-    //
-    // Register each match register as a separate non-readable timer with the
-    // HAL. Since this timer is deadline-based, it can do pseudo-periodic
-    // mode and lossless rate transitions.
-    //
-
-    NewTimer.Capabilities = TIMER_ONE_SHOT_CAPABLE |
-                            TIMER_PERIODIC_CAPABLE |
-                            TIMER_PSEUDO_PERIODIC_CAPABLE |
-                            TIMER_GENERATES_LINE_BASED_INTERRUPTS;
-
-    for (TimerIndex = 0; TimerIndex < EG2MATCH_COUNT; TimerIndex += 1) {
-        NewTimer.Interrupt.Gsi = Eg2TimerGsi[TimerIndex];
-        InternalData.Offset = EG2MATCH_SIZE * TimerIndex;
-        ResourceDescriptorHeader.Uid = EG2MATCH_SIZE * TimerIndex;
-        Status = RegisterResourceDescriptor(Handle,
-                                            ResourceGroup,
-                                            &ResourceDescriptorHeader,
-                                            &NewTimer);
-
-        if (!NT_SUCCESS(Status)) {
-            goto RegisterEnd;
-        }
-    }
-
-    Status = STATUS_SUCCESS;
-
-RegisterEnd:
-    return Status;
-}
-
-_Function_class_(TIMER_INITIALIZE)
-NTSTATUS
-Eg2TimerInitialize (
-    __in PVOID TimerData
-    )
-
-/*++
-
-Routine Description:
-
-    This routine is responsible for initializing the timer hardware. This is
-    guaranteed to be the first timer routine called by the HAL. It must prepare
-    the timer for use by beginning the timer's counter ticking if the counter
-    is readable, setting the intial input clock divisor to 1 if applicable,
-    and masking all interrupts. If the timer's stop routine is called, this
-    routine will be called before the timer is queried or armed again. It will
-    not be called between every rearming of the timer.
-
-    This routine will not be called concurrently with any other calls to
-    this HAL Timer extension. For per-processor timers, this routine will be
-    called once on each processor. A failure on any processor blocks the timer's
-    use on all processors.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context. The contents
-        of this pointer were specified when the timer was initially registered,
-        and may be modified inside this routine. The HAL does not interpret any
-        data deferenced from this pointer.
-
-Return Value:
-
-    Returns an NT status code indicating success or failure. If a successful
-    status code is returned then the HAL may subsequently call further routines
-    in this HAL extension to query or arm the timer. If a failure code is
-    returned, this HAL extension will not attempt to use this timer unless the
-    Initialize routine is called again and succeeds.
-
---*/
-
-{
-
-    PHYSICAL_ADDRESS PhysicalAddress;
-    NTSTATUS Status;
-    PEG2TIMER_DATA Timer;
-
-    Timer = (PEG2TIMER_DATA)TimerData;
-
-    //
-    // Map the timer if no one has done that yet.
-    //
-
-    if (Eg2TimerBase == NULL) {
-        PhysicalAddress.QuadPart = Eg2TimerPhysicalAddress;
-        Eg2TimerBase = HalMapIoSpace(PhysicalAddress,
-                                     EG2TIMER_BLOCK_SIZE,
-                                     MmNonCached);
-
-        if (Eg2TimerBase == NULL) {
-            Status = STATUS_INSUFFICIENT_RESOURCES;
-            goto InitializeEnd;
-        }
-    }
-
-    //
-    // Start the counter ticking in free running mode, and mask all interrupts.
-    // The counter must *not* be reset here, otherwise an Initialize call on the
-    // counter would affect the match register timers, which as far as the HAL
-    // is concerned are completely independent from one another.
-    //
-
-    WRITE_EG2TIMER(0, Eg2TimerGlobalControl, EG2TIMER_GLOBAL_CONTROL_ENABLE);
-    if (Timer->Offset != EG2TIMER_COUNTER_OFFSET) {
-        WRITE_EG2TIMER(Timer->Offset, Eg2TimerControl, 0);
-    }
-
-    Status = STATUS_SUCCESS;
-
-InitializeEnd:
-    return Status;
-}
-
-_Function_class_(TIMER_QUERY_COUNTER)
-ULONGLONG
-Eg2TimerQueryCounter (
-    __in PVOID TimerData
-    )
-
-/*++
-
-Routine Description:
-
-    This routine queries the timer hardware and retrieves the current counter
-    value.
-
-    Timers are assumed to always count *up*. If the actual timer hardware counts
-    down, then this routine should subtract the current count from the maximum
-    counter value so that values appear to count up. This routine may be called
-    concurrently on multiple processors and must be reentrant. This routine is
-    extremely performance sensitive, as it may be used to back the system
-    performance counter.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context, whose
-        initial content was supplied when the timer was registered.
-
-Return Value:
-
-    Returns the hardware's current count.
-
---*/
-
-{
-
-    PEG2TIMER_DATA Timer;
-
-    Timer = (PEG2TIMER_DATA)TimerData;
-
-    NT_ASSERT(Timer->Offset == EG2TIMER_COUNTER_OFFSET);
-
-    return READ_EG2TIMER(Timer->Offset, Eg2TimerCurrentCount);
-}
-
-_Function_class_(TIMER_ACKNOWLEDGE_INTERRUPT)
-VOID
-Eg2TimerAcknowledgeInterrupt (
-    __in PVOID TimerData
-    )
-
-/*++
-
-Routine Description:
-
-    This routine performs any actions necessary to acknowledge and quiesce a
-    timer interrupt. For per-processor timers, this routine may be called
-    concurrently on multiple processors. This routine will be called on every
-    timer interrupt at the hardware priority level of that interrupt, so this
-    routine is extremely performance sensitive. For timers running in
-    pseudo-periodic mode, this routine must rearm the timer for the same
-    interval as it was armed with without introducing delay into the interrupt
-    interval. Only deadline-based timers support pseudo-periodic mode.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context, whose
-        initial content was supplied when the timer was registered.
-
-Return Value:
-
-    None.
-
---*/
-
-{
-
-    ULONG MatchValue;
-    PEG2TIMER_DATA Timer;
-
-    //
-    // No action is necessary here as far as acknowledging the interrupt.
-    // If the current mode is pseudo-periodic, the next interrupt must be
-    // armed now.
-    //
-
-    Timer = (PEG2TIMER_DATA)TimerData;
-
-    NT_ASSERT(Timer->Offset != EG2TIMER_COUNTER_OFFSET);
-    NT_ASSERT(Timer->Mode != TimerModeInvalid);
-
-    if (Timer->Mode == TimerModePseudoPeriodic) {
-
-        NT_ASSERT(Timer->Period != 0);
-
-        //
-        // Read the deadline that just passed, add the period, and then write
-        // the new deadline.
-        //
-
-        MatchValue = READ_EG2TIMER(Timer->Offset, Eg2TimerMatch);
-        MatchValue += Timer->Period;
-        WRITE_EG2TIMER(Timer->Offset, Eg2TimerMatch, MatchValue);
-    }
-
-    return;
-}
-
-_Function_class_(TIMER_ARM_TIMER)
-NTSTATUS
-Eg2TimerArm (
-    __in PVOID TimerData,
-    __in TIMER_MODE Mode,
-    __in ULONGLONG TickCount
-    )
-
-/*++
-
-Routine Description:
-
-    This routine arms a timer to fire an interrupt after the given number of
-    timer ticks. For timers that only interrupt on rollovers, this simply
-    enables the interrupt, the tick count parameter is ignored. If the timer
-    is currently armed for a different mode or tick count, this call is
-    expected to replace that programming. This routine will not get called
-    concurrently with other timer calls, except on per-processor timers, where
-    it may get called concurrently on different processors.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context, whose
-        initial content was supplied when the timer was registered.
-
-    Mode - Supplies the mode to arm the timer in, which will be one of the
-        modes the HAL extension advertised support for when registering the
-        timer. The modes are as follows:
-
-        OneShot - Arms the timer to fire the given number of ticks from now.
-            Only one interrupt is expected to come in. The HAL does not make
-            assumptions on whether or not the expiration of this interrupt
-            causes the counter to stop. The Query Counter routine will not be
-            called while a timer is armed to fire an interrupt.
-
-        Periodic - Arms the timer to fire periodically with an interval of the
-            given number of ticks. The first interrupt should happen
-            approximately the given number of ticks from when the arm timer
-            function was invoked.
-
-        PseudoPeriodic - Arms the timer with the same functional behavior as
-            periodic mode, with the knowledge that the timer will have to rearm
-            itself during the acknowledge interrupt routine. This mode is
-            expected to have slightly worse performance than pure periodic mode,
-            but is expected to generate periodic interrupts at the exact rate
-            specified.
-
-    TickCount - Supplies the number of ticks from now that the timer should
-        assert its interrupt in. For timers that are only capable of
-        interrupting on rollovers from their maximum value to 0, this parameter
-        is ignored.
-
-Return Value:
-
-    Returns and NTSTATUS code indicating success or failure. If the timer
-    returns success, then the interrupt is expected to come in the specified
-    number of ticks from when the function was called, with a tolerance of
-    however long the function took to execute. If the routine fails, then no
-    timer routines will be called again until the timer Initialize routine is
-    called again and succeeds. In most cases, returning a failure code results
-    in a system bugcheck.
-
---*/
-
-{
-
-    ULONG ControlRegister;
-    ULONG MatchValue;
-    PEG2TIMER_DATA Timer;
-
-    Timer = (PEG2TIMER_DATA)TimerData;
-
-    NT_ASSERT(TickCount != 0);
-    NT_ASSERT(TickCount <= 0xFFFFFFFF);
-    NT_ASSERT(Timer->Offset != EG2TIMER_COUNTER_OFFSET);
-
-    //
-    // This will never occur.
-    //
-
-    if ((TickCount > 0xFFFFFFFF) || (TickCount == 0)) {
-        return STATUS_INVALID_PARAMETER;
-    }
-
-    //
-    // Disable the timer while it's being programmed to avoid spurious
-    // interrupts.
-    //
-
-    WRITE_EG2TIMER(Timer->Offset, Eg2TimerControl, 0);
-    ControlRegister = EG2TIMER_MATCH_INTERRUPT_ENABLE;
-
-    //
-    // For periodic mode, set the periodic interval register.
-    //
-
-    if (Mode == TimerModePeriodic) {
-        ControlRegister |= EG2TIMER_MATCH_PERIODIC;
-        WRITE_EG2TIMER(Timer->Offset, Eg2TimerInterval, (ULONG)TickCount);
-    }
-
-    Timer->Mode = Mode;
-    Timer->Period = (ULONG)TickCount;
-
-    //
-    // Calculate and write in the first match value.
-    //
-
-    MatchValue = READ_EG2TIMER(Timer->Offset, Eg2TimerCurrentCount);
-    MatchValue += (ULONG)TickCount;
-    WRITE_EG2TIMER(Timer->Offset, Eg2TimerMatch, MatchValue);
-
-    //
-    // Enable the interrupt.
-    //
-
-    WRITE_EG2TIMER(Timer->Offset, Eg2TimerControl, ControlRegister);
-    return STATUS_SUCCESS;
-}
-
-_Function_class_(TIMER_STOP)
-VOID
-Eg2TimerStop (
-    __in PVOID TimerData
-    )
-
-/*++
-
-Routine Description:
-
-    This routine stops a timer from ticking. After this function returns, the
-    timer should not generate any more interrupts, and reads to its counter
-    might return the same value every time.
-
-Arguments:
-
-    TimerData - Supplies a pointer to the timer's private context, whose
-        initial content was supplied when the timer was registered.
-
-Return Value:
-
-    None, this function must succeed.
-
---*/
-
-{
-
-    PEG2TIMER_DATA Timer;
-
-    Timer = (PEG2TIMER_DATA)TimerData;
-
-    //
-    // Clear the interrupt enable bit.
-    //
-
-    WRITE_EG2TIMER(Timer->Offset, Eg2TimerControl, 0);
-    return;
-}
diff --git a/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.def b/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.def
deleted file mode 100644
index 685129d2..00000000
--- a/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.def
+++ /dev/null
@@ -1,2 +0,0 @@
-LIBRARY HalExtSampleTimers2
-
diff --git a/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.rc b/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.rc
deleted file mode 100644
index c82378e0..00000000
--- a/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.rc
+++ /dev/null
@@ -1,10 +0,0 @@
-#include "verrsrc.h"
-#include <ntverp.h>
-
-#define VER_FILETYPE                VFT_DLL
-#define VER_FILESUBTYPE             VFT_UNKNOWN
-#define VER_FILEDESCRIPTION_STR     "HAL Extension Sample - Timers 2"
-#define VER_INTERNALNAME_STR        "HalExtSampleTimers2.DLL"
-#define VER_ORIGINALFILENAME_STR    "HalExtSampleTimers2.DLL"
-
-#include <common.ver>
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deleted file mode 100644
index dc581c00..00000000
--- a/general/HalExtensionSample/HalExtSampleTimers2/HalExtSampleTimers2.vcxproj
+++ /dev/null
@@ -1,126 +0,0 @@
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-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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-    <ProjectConfiguration Include="Debug|Arm">
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-      <Platform>Arm</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Arm">
-      <Configuration>Release</Configuration>
-      <Platform>Arm</Platform>
-    </ProjectConfiguration>
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-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{A99E0448-5F6C-42B3-99AA-C43464989418}</ProjectGuid>
-    <RootNamespace>$(MSBuildProjectName)</RootNamespace>
-    <KMDF_VERSION_MAJOR>1</KMDF_VERSION_MAJOR>
-    <Configuration Condition="'$(Configuration)' == ''">Debug</Configuration>
-    <Platform Condition="'$(Platform)' == ''">Arm</Platform>
-    <SampleGuid>{E9FE899A-F0DB-43B5-8DFD-65D5D790DD76}</SampleGuid>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <TargetVersion>Windows10</TargetVersion>
-    <UseDebugLibraries>False</UseDebugLibraries>
-    <DriverTargetPlatform>Universal</DriverTargetPlatform>
-    <DriverType />
-    <PlatformToolset>WindowsApplicationForDrivers10.0</PlatformToolset>
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-  </PropertyGroup>
-  <PropertyGroup Label="Configuration" Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <TargetVersion>Windows10</TargetVersion>
-    <UseDebugLibraries>True</UseDebugLibraries>
-    <DriverTargetPlatform>Universal</DriverTargetPlatform>
-    <DriverType />
-    <PlatformToolset>WindowsApplicationForDrivers10.0</PlatformToolset>
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <PropertyGroup>
-    <OutDir>$(IntDir)</OutDir>
-  </PropertyGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
-  </ImportGroup>
-  <ItemGroup Label="WrappedTaskItems" />
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <Link>
-      <EntryPointSymbol Condition="'$(Platform)'=='win32'">HalExtensionInit@12</EntryPointSymbol>
-      <EntryPointSymbol Condition="'$(Platform)'!='win32'">HalExtensionInit</EntryPointSymbol>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <Link>
-      <EntryPointSymbol Condition="'$(Platform)'=='win32'">HalExtensionInit@12</EntryPointSymbol>
-      <EntryPointSymbol Condition="'$(Platform)'!='win32'">HalExtensionInit</EntryPointSymbol>
-    </Link>
-  </ItemDefinitionGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <TargetName>HalExtSampleTimers2</TargetName>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Arm'">
-    <TargetName>HalExtSampleTimers2</TargetName>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Arm'">
-    <ResourceCompile>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
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-    <ClCompile>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
-      <TreatWarningAsError>true</TreatWarningAsError>
-      <WarningLevel>Level4</WarningLevel>
-      <AdditionalOptions>%(AdditionalOptions) /J</AdditionalOptions>
-      <ExceptionHandling>
-      </ExceptionHandling>
-    </ClCompile>
-    <Midl>
-      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(DDK_INC_PATH)</AdditionalIncludeDirectories>
-    </Midl>
-    <Link>
-      <AdditionalDependencies>%(AdditionalDependencies);halextlib.lib;libcntpr.lib;bufferoverflowfastfailk.lib</AdditionalDependencies>
-      <AdditionalOptions>%(AdditionalOptions)                           -merge:PAGECONST=PAGE                    -merge:INITCONST=INIT                    /LARGEADDRESSAWARE</AdditionalOptions>
-      <ModuleDefinitionFile>HalExtSampleTimers2.def</ModuleDefinitionFile>
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-    <ClCompile Include="HalExtSampleTimers2.c" />
-    <ResourceCompile Include="HalExtSampleTimers2.rc" />
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-  <ItemGroup>
-    <Inf Exclude="@(Inf)" Include="*.inf" />
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-    <None Exclude="@(None)" Include="*.def;*.bat;*.hpj;*.asmx" />
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-    <ClInclude Exclude="@(ClInclude)" Include="*.h;*.hpp;*.hxx;*.hm;*.inl;*.xsd" />
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-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-</Project>
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deleted file mode 100644
index d752a638..00000000
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-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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-      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx;*</Extensions>
-      <UniqueIdentifier>{CE019AA9-89F5-4A8E-87D1-ED585767F789}</UniqueIdentifier>
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deleted file mode 100644
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