ms2_usbfn.cpp

Lido PXA270平台开发板的最新BSP,包括源代码

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this source code is subject to the terms of the Microsoft end-user
// license agreement (EULA) under which you licensed this SOFTWARE PRODUCT.
// If you did not accept the terms of the EULA, you are not authorized to use
// this source code. For a copy of the EULA, please see the LICENSE.RTF on your
// install media.
//
/*++

THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
PARTICULAR PURPOSE.

Module Name: 

        ms2_usbfn.cpp

Abstract:

        Bulverde USB Function Driver.

--*/

#include <windows.h>
#include <ceddk.h>
#include <ddkreg.h>
#include <nkintr.h> // needed for SYSINTR_NOP

#include <bulverde.h>
#include <xllp_gpio.h>
#include <bul_usbfn.h>

#include <XSBASE270_G.h>
#include <xllp_cpld.h>


class MS2UsbDevice: public BulUsbDevice {
public:
    MS2UsbDevice(LPCTSTR lpActivePath)
    :  BulUsbDevice(lpActivePath)
    {
        m_pCPLDReg = NULL;    
    }
    virtual ~MS2UsbDevice() {
        if (m_pCPLDReg)
            MmUnmapIoSpace(m_pCPLDReg,0);
    }
    virtual DWORD Init(PVOID pvMddContext,PUFN_MDD_INTERFACE_INFO pMddInterfaceInfo, PUFN_PDD_INTERFACE_INFO pPddInterfaceInfo) 
    {
        DWORD dwReturn = ERROR_INVALID_DATA;
        if (m_pCPLDReg==NULL) {
            PHYSICAL_ADDRESS ioPhysicalBase = { XSBASE270_G_BASE_REG_PA_CPLD, 0 };
            m_pCPLDReg =(PXSBASE270_G_CPLD_REGS) MmMapIoSpace(ioPhysicalBase, sizeof(XSBASE270_G_CPLD_REGS),FALSE) ;
        }
        if (m_pCPLDReg) {
            dwReturn = BulUsbDevice::Init(pvMddContext, pMddInterfaceInfo, pPddInterfaceInfo);
        }
        return dwReturn;
       
    }
    virtual DWORD Start() {
        DWORD dwReturn = BulUsbDevice::Start();
        if (dwReturn == ERROR_SUCCESS) {
            //Enable UDC Soft Connect
            m_pCPLDReg->BCR2 |= XLLP_BCR2_VBUS_ON;
        }
        return dwReturn;
    }
    virtual DWORD Stop() {
        DWORD dwReturn = BulUsbDevice::Stop();
        if (dwReturn == ERROR_SUCCESS) {
            //Disable UDC Soft Connect
            m_pCPLDReg->BCR2 &= ~XLLP_BCR2_VBUS_ON;
        }
        return dwReturn;
    }
    virtual BOOL IsCableAttached() { 
        return ((m_pCPLDReg->STATUS & XLLP_STS_USB1_WAKE)!=0); 
   };
private:
    volatile PXSBASE270_G_CPLD_REGS m_pCPLDReg;
        
};


BulUsbDevice * CreateBulUsbDevice(LPCTSTR lpActivePath)
{
    return new MS2UsbDevice(lpActivePath);
}