trans.c

Windows CE 6.0 BSP for VOIP sample phone. Intel PXA270 platform.

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this sample source code is subject to the terms of the Microsoft
// license agreement under which you licensed this sample source code. If
// you did not accept the terms of the license agreement, you are not
// authorized to use this sample source code. For the terms of the license,
// please see the license agreement between you and Microsoft or, if applicable,
// see the LICENSE.RTF on your install media or the root of your tools installation.
// THE SAMPLE SOURCE CODE IS PROVIDED "AS IS", WITH NO WARRANTIES.
//
//------------------------------------------------------------------------------
//
//  File:  trans.c
//
#include <windows.h>
#include <ceddk.h>
#include <oal.h>

//------------------------------------------------------------------------------
//
//  Function:  HalTranslateBusAddress
//
//  This function translates a bus-relative physical address into
//  the corresponding system physical address. To avoid code duplication
//  HAL is called to do translation.
//
BOOLEAN HalTranslateBusAddress(
   INTERFACE_TYPE ifcType, ULONG busNumber, PHYSICAL_ADDRESS busAddress,
   ULONG *pAddressSpace, PHYSICAL_ADDRESS *pSystemAddress
) {
    BOOLEAN rc = FALSE;
    OAL_DDK_PARAMS params;
    UINT32 outSize;

    // Check input parameters
    if (pAddressSpace == NULL || pSystemAddress == NULL) return FALSE;

    memset(&params, 0, sizeof(params));
    params.function = IOCTL_OAL_TRANSBUSADDRESS;
    params.transAddress.ifcType = ifcType;
    switch (ifcType) {
    case PCIBus:
        params.transAddress.busNumber = busNumber >> 8;
        break;
    default:
        params.transAddress.busNumber = busNumber;
        break;
    }        
    params.transAddress.space = *pAddressSpace;
    params.transAddress.address = busAddress.QuadPart;

    if (!KernelIoControl(
        IOCTL_HAL_DDK_CALL, &params, sizeof(params), NULL, 0, &outSize
    )) goto cleanUp;

    rc = params.rc;
    *pAddressSpace = params.transAddress.space;
    pSystemAddress->QuadPart = params.transAddress.address;
    
cleanUp:
    DEBUGMSG(TRUE, (
        L"HalTranslateBusAddress: %d %d %08x%08x %d --> %08x%08x %d\r\n", 
        ifcType, busNumber, busAddress.HighPart, busAddress.LowPart,
        *pAddressSpace, pSystemAddress->HighPart, pSystemAddress->LowPart, rc
    ));      
    return rc;
}

//------------------------------------------------------------------------------
//
//  Function:  HalTranslateSystemAddress
//
//  This function translates a system physical address into
//  the corresponding bus relative physical address. To avoid code duplication
//  HAL is called to do translation.
//
BOOLEAN HalTranslateSystemAddress(
   INTERFACE_TYPE ifcType, ULONG busNumber, PHYSICAL_ADDRESS systemAddress, 
   PHYSICAL_ADDRESS *pBusAddress
) {
    BOOLEAN rc = FALSE;
    OAL_DDK_PARAMS params;
    UINT32 outSize;

    // Check input parameters
    if (pBusAddress == NULL) goto cleanUp;

    // Prepare input parameters for HAL call
    memset(&params, 0, sizeof(params));
    params.function = IOCTL_OAL_TRANSSYSADDRESS;
    params.transAddress.ifcType = ifcType;
    switch (ifcType) {
    case PCIBus:
        params.transAddress.busNumber = busNumber >> 8;
        break;
    default:
        params.transAddress.busNumber = busNumber;
        break;
    }        
    params.transAddress.address = systemAddress.QuadPart;

    // Call to HAL
    if (!KernelIoControl(
        IOCTL_HAL_DDK_CALL, &params, sizeof(params), NULL, 0, &outSize
    )) goto cleanUp;

    // Get output parameters from HAL call
    pBusAddress->QuadPart = params.transAddress.address;

    // Done
    rc = TRUE;
    
cleanUp:
    return rc;
}

//------------------------------------------------------------------------------