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/******************************************************************************
* Copyright (c) 2013-2014, Texas Instruments Incorporated - http://www.ti.com/
* All rights reserved.
*
* 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.
* * Neither the name of Texas Instruments Incorporated nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#ifndef _CMEM_H
#define _CMEM_H
#include "u_lockable.h"
extern "C"
{
#include "pciedrv.h"
#include "cmem_drv.h"
#include "bufmgr.h"
}
#define HOST_CMEM_BUFFER_SIZE 0x400000 // 4M
#define MAX_NUM_HOST_DSP_BUFFERS 128
class Cmem : public Lockable_off
{
public:
~Cmem() { close(); }
static Cmem* instance ();
void open();
void close();
void dma_write(int32_t dsp_id, uint32_t addr, uint8_t *buf, uint32_t size);
void dma_read (int32_t dsp_id, uint32_t addr, uint8_t *buf, uint32_t size);
private:
static Cmem* pInstance;
cmem_host_buf_desc_t buf_desc[MAX_NUM_HOST_DSP_BUFFERS];
void * DmaBufPool;
Cmem() : DmaBufPool(NULL) { open(); }
Cmem(const Cmem&); // copy ctor disallowed
Cmem& operator=(const Cmem&); // assignment disallowed
};
#endif // _CMEM_H
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