ohcd.c

WinCE 3.0 BSP, 包含Inter SA1110, Intel_815E, Advantech_PCM9574 等

        DEBUGMSG(ZONE_ERROR, 
                 (TEXT("OHCD: Error, can't find USB Controller\r\n")));

        return FALSE;
    }

    DEBUGMSG(ZONE_PCI, 
             (TEXT("OHCD: Revision Stepping value = 0x%02X\r\n"), 
              pciConfig.RevisionID));


    // The bottom bit is 1 for the "Resource Type Indicator (RTE)" but we don't
    // want that set.
    portBase = pciConfig.u.type0.BaseAddresses[0] & ~0x1;

    ioPhysicalBase.LowPart = portBase;

    if (HalTranslateBusAddress(PCIBus, bus, ioPhysicalBase, &inIoSpace, 
                               &ioPhysicalBase)) {
        if (!inIoSpace) {
            if ((*pioPortBase = (PUCHAR)MmMapIoSpace(ioPhysicalBase, 
                                                     portRange, FALSE)) == NULL) {
                // We may as well not continue
                DEBUGMSG(ZONE_INIT | ZONE_ERROR, 
                         (TEXT("OHCD: Error mapping I/O Ports.\r\n")));
                return FALSE;
            }
        } else {
            *pioPortBase = (PUCHAR)ioPhysicalBase.LowPart;
        }
    } else {
        DEBUGMSG(ZONE_INIT | ZONE_ERROR, 
                 (TEXT("OHCD: Error translating I/O Ports.\r\n")));
        return FALSE;
    }

    DEBUGMSG(ZONE_PCI, 
             (TEXT("OHCD: ioPhysicalBase 0x%X, IoSpace 0x%X\r\n"),
              ioPhysicalBase.LowPart, inIoSpace));
    DEBUGMSG(ZONE_PCI, 
             (TEXT("OHCD: ioPortBase 0x%X, portBase 0x%X\r\n"),
              *pioPortBase, portBase));

    return TRUE;
}


/* InitializeOHCI
 *
 *  Configure and initialize OHCI card
 *
 * Return Value:
 *  Return TRUE if card could be located and configured, otherwise FALSE
 */
static BOOL 
InitializeOHCI(
    SOhcdPdd * pPddObject,    // IN - Pointer to PDD structure
    LPCWSTR szDriverRegKey)   // IN - Pointer to active registry key string
{
    DWORD dwUseExistingSettings;
    PUCHAR ioPortBase = NULL;
    DWORD dwSysIntr, dwIRQ;
    BOOL fResult = FALSE;
    LPVOID pobMem = NULL;
    LPVOID pobOhcd = NULL;
    DWORD t;

    if (!GetRegistryConfig(&dwUseExistingSettings, &dwIRQ, (DWORD *)&ioPortBase)) {
        RETAILMSG(1,(TEXT("!OHCD: Error reading registry settings\r\n")));
        return FALSE;
    }
    DEBUGMSG(ZONE_INIT,(TEXT("OHCD: Read config from registry: Use existing: %u, IRQ: %u, I/O base: %X\r\n"),
                        dwUseExistingSettings,dwIRQ,ioPortBase));
    fResult   = ConfigureOHCICard(!!dwUseExistingSettings,&ioPortBase, &dwIRQ);

    if(fResult)
    {
        // HcRhDescriptorA configuration
        t = *(volatile unsigned long *)(ioPortBase+0x48);
        t &= 0x00FFFFFF;
	t |= 1 << 24;
        *(volatile unsigned long *)(ioPortBase+0x48) = t;

        dwSysIntr = dwIRQ;

        // The PDD can supply a buffer of contiguous physical memory here, or can let the 
        // MDD try to allocate the memory from system RAM.  In our case, let the MDD do it.
        pobMem = OhcdMdd_CreateMemoryObject(gcTotalAvailablePhysicalMemory, 
                                            gcHighPriorityPhysicalMemory, NULL,NULL); 

        if(pobMem)
        {
            pobOhcd = OhcdMdd_CreateOhcdObject(pPddObject, pobMem,
                    szDriverRegKey, ioPortBase, dwSysIntr);

            fResult = pobOhcd ? TRUE : FALSE;
        }
        else
            fResult = FALSE;

        if(!fResult)
        {
            if(pobOhcd)
                OhcdMdd_DestroyOhcdObject(pobOhcd);
            if(pobMem)
                OhcdMdd_DestroyMemoryObject(pobMem);

            pobOhcd = NULL;
            pobMem = NULL;
        }
    }

    pPddObject->lpvMemoryObject = pobMem;
    pPddObject->lpvOhcdMddObject = pobOhcd;

    return fResult;
}

/* OhcdPdd_Init
 *
 *   PDD Entry point - called at system init to detect and configure OHCI card.
 *
 * Return Value:
 *   Return pointer to PDD specific data structure, or NULL if error.
 */
extern DWORD 
OhcdPdd_Init(
    DWORD dwContext)  // IN - Pointer to context value. For device.exe, this is a string 
                      //      indicating our active registry key.
{
    SOhcdPdd *  pPddObject = malloc(sizeof(SOhcdPdd));
    BOOL        fRet = FALSE;

    fRet = InitializeOHCI(pPddObject, (LPCWSTR)dwContext);

    if(!fRet)
    {
        free(pPddObject);
        pPddObject = NULL;
    }

    return (DWORD)pPddObject;
}

/* OhcdPdd_CheckConfigPower
 *
 *    Check power required by specific device configuration and return whether it
 *    can be supported on this platform.  For CEPC, this is trivial, just limit to
 *    the 500mA requirement of USB.  For battery powered devices, this could be 
 *    more sophisticated, taking into account current battery status or other info.
 *
 * Return Value:
 *    Return TRUE if configuration can be supported, FALSE if not.
 */
extern BOOL OhcdPdd_CheckConfigPower(
    UCHAR bPort,         // IN - Port number
    DWORD dwCfgPower,    // IN - Power required by configuration
    DWORD dwTotalPower)  // IN - Total power currently in use on port
{
    return ((dwCfgPower + dwTotalPower) > 500) ? FALSE : TRUE;
}

extern void OhcdPdd_PowerUp(DWORD hDeviceContext)
{
    SOhcdPdd * pPddObject = (SOhcdPdd *)hDeviceContext;
    OhcdMdd_PowerUp(pPddObject->lpvOhcdMddObject);

    return;
}


extern void OhcdPdd_PowerDown(DWORD hDeviceContext)
{
    SOhcdPdd * pPddObject = (SOhcdPdd *)hDeviceContext;

    OhcdMdd_PowerDown(pPddObject->lpvOhcdMddObject);

    return;
}


extern BOOL OhcdPdd_Deinit(DWORD hDeviceContext)
{
    SOhcdPdd * pPddObject = (SOhcdPdd *)hDeviceContext;

    if(pPddObject->lpvOhcdMddObject)
        OhcdMdd_DestroyOhcdObject(pPddObject->lpvOhcdMddObject);
    if(pPddObject->lpvMemoryObject)
        OhcdMdd_DestroyMemoryObject(pPddObject->lpvMemoryObject);

    return TRUE;
}


extern DWORD OhcdPdd_Open(DWORD hDeviceContext, DWORD AccessCode,
        DWORD ShareMode)
{
    UnusedParameter(hDeviceContext);
    UnusedParameter(AccessCode);
    UnusedParameter(ShareMode);

    return 1; // we can be opened, but only once!
}


extern BOOL OhcdPdd_Close(DWORD hOpenContext)
{
    UnusedParameter(hOpenContext);

    return TRUE;
}


extern DWORD OhcdPdd_Read(DWORD hOpenContext, LPVOID pBuffer, DWORD Count)
{
    UnusedParameter(hOpenContext);
    UnusedParameter(pBuffer);
    UnusedParameter(Count);

    return (DWORD)-1; // an error occured
}


extern DWORD OhcdPdd_Write(DWORD hOpenContext, LPCVOID pSourceBytes,
        DWORD NumberOfBytes)
{
    UnusedParameter(hOpenContext);
    UnusedParameter(pSourceBytes);
    UnusedParameter(NumberOfBytes);

    return (DWORD)-1;
}


extern DWORD OhcdPdd_Seek(DWORD hOpenContext, LONG Amount, DWORD Type)
{
    UnusedParameter(hOpenContext);
    UnusedParameter(Amount);
    UnusedParameter(Type);

    return (DWORD)-1;
}


extern BOOL OhcdPdd_IOControl(DWORD hOpenContext, DWORD dwCode, PBYTE pBufIn,
        DWORD dwLenIn, PBYTE pBufOut, DWORD dwLenOut, PDWORD pdwActualOut)
{
    UnusedParameter(hOpenContext);
    UnusedParameter(dwCode);
    UnusedParameter(pBufIn);
    UnusedParameter(dwLenIn);
    UnusedParameter(pBufOut);
    UnusedParameter(dwLenOut);
    UnusedParameter(pdwActualOut);

    return FALSE;
}