[ofw] [ND 7/7] ND: MW APIs

[Sean Hefty]

/*
 * Copyright (c) 2009 Intel Corporation. All rights reserved.
 *
 * This software is available to you under the OpenIB.org BSD license
 * below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#pragma once

#ifndef _ND_MW_H_
#define _ND_MW_H_

#include <initguid.h>
#include <ndspi.h>
#include "nd_base.h"
#include "nd_adapter.h"

class CNDMemoryWindow : INDMemoryWindow , public CNDBase
{
public:
	// IUnknown methods
	STDMETHODIMP QueryInterface(REFIID riid, LPVOID FAR* ppvObj);
	STDMETHODIMP_(ULONG) AddRef();
	STDMETHODIMP_(ULONG) Release();
	
	CNDMemoryWindow(CNDAdapter *m_pAdapter);
	~CNDMemoryWindow();
	void Delete() {delete this;}
	static STDMETHODIMP
	CreateInstance(CNDAdapter *pAdapter, INDMemoryWindow** ppMw)
	{
		HRESULT hr;
		CNDMemoryWindow *mw;

		mw = new CNDMemoryWindow(pAdapter);
		if (mw == NULL) {
			hr = ND_NO_MEMORY;
			goto err1;
		}

		hr = mw->Init();
		if (FAILED(hr)) {
			goto err2;
		}

		*ppMw = mw;
		return ND_SUCCESS;

	err2:
		mw->Release();
	err1:
		*ppMw = NULL;
		return hr;
	}

	IWVMemoryWindow		*m_pWvMw;
protected:
	CNDAdapter			*m_pAdapter;

	STDMETHODIMP		Init();
};

#endif // _ND_MW_H_

/*
 * Copyright (c) 2009 Intel Corporation. All rights reserved.
 *
 * This software is available to you under the OpenIB.org BSD license
 * below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "nd_mw.h"

CNDMemoryWindow::CNDMemoryWindow(CNDAdapter *pAdapter)
{
	pAdapter->AddRef();
	m_pAdapter = pAdapter;
	m_pWvMw = NULL;
}

STDMETHODIMP CNDMemoryWindow::
Init(void)
{
	return m_pAdapter->m_pWvPd->AllocateMemoryWindow(&m_pWvMw);
}

CNDMemoryWindow::~CNDMemoryWindow()
{
	if (m_pWvMw != NULL) {
		m_pWvMw->Release();
	}
	m_pAdapter->Release();
}

STDMETHODIMP CNDMemoryWindow::
QueryInterface(REFIID riid, LPVOID FAR* ppvObj)
{
	if (riid != IID_IUnknown && riid != IID_INDMemoryWindow) {
		*ppvObj = NULL;
		return E_NOINTERFACE;
	}

	*ppvObj = this;
	AddRef();
	return ND_SUCCESS;
}

STDMETHODIMP_(ULONG) CNDMemoryWindow::
AddRef(void)
{
	return CNDBase::AddRef();
}

STDMETHODIMP_(ULONG) CNDMemoryWindow::
Release(void)
{
	return CNDBase::Release();
}