asdk-repo-libdce

/*

 * Copyright (c) 2013, Texas Instruments Incorporated

 * 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.

 */

​

#include "memplugin.h"

#include "dce_priv.h"

​

extern struct omap_device   *OmapDev;

​

​

/*  memplugin_alloc - allocates omap_bo buffer with a header above it.

 *  @sz: Size of the buffer requsted

 *  @height: this parameter is currently not used

 *  @region :Used to specify the region from where the memory is allocated->Not used.

 *  @align:Alignment. Not used

 *  @flags: Bit field. As of now, only the least significant 4 bits are considered

 *          to identify the core for which this allocation is needed. This information

 *          is needed to use the right tiler pin/unpin APIs (DSP or IPU).

 *          For future extensibility, many more attributes can be added as bit fields.

 *  Returns a virtual address pointer to omap_bo buffer or the param buffer

 */

void *memplugin_alloc(int sz, int height, MemRegion region, int align, int flags)

{

    MemHeader        *h;

    struct omap_bo   *bo = omap_bo_new(OmapDev, sz + sizeof(MemHeader), OMAP_BO_WC);

​

    if( !bo ) {

        return (NULL);

    }

​

    h = omap_bo_map(bo);

    memset(H2P(h), 0, sz);

    h->size = sz;

    h->ptr = (void *)bo;

    /* get the fd from drm which needs to be closed by memplugin_free */