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/*
* Copyright (c) 2011-2018, The Linux Foundation. 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 The Linux Foundation 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 "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* 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 __GR_ION_ALLOC_H__
#define __GR_ION_ALLOC_H__
#include <linux/msm_ion.h>
#define FD_INIT -1
namespace gralloc {
enum {
CACHE_CLEAN = 0x1,
CACHE_INVALIDATE,
CACHE_CLEAN_AND_INVALIDATE,
};
struct AllocData {
void *base = NULL;
int fd = -1;
int ion_handle = -1;
unsigned int offset = 0;
unsigned int size = 0;
unsigned int align = 1;
uintptr_t handle = 0;
bool uncached = false;
unsigned int flags = 0x0;
unsigned int heap_id = 0x0;
unsigned int alloc_type = 0x0;
};
class IonAlloc {
public:
IonAlloc() { ion_dev_fd_ = FD_INIT; }
~IonAlloc() { CloseIonDevice(); }
bool Init();
int AllocBuffer(AllocData *data);
int FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd, int ion_handle);
int MapBuffer(void **base, unsigned int size, unsigned int offset, int fd);
int ImportBuffer(int fd);
int UnmapBuffer(void *base, unsigned int size, unsigned int offset);
int CleanBuffer(void *base, unsigned int size, unsigned int offset, int handle, int op);
private:
const char *kIonDevice = "/dev/ion";
int OpenIonDevice();
void CloseIonDevice();
int ion_dev_fd_;
};
} // namespace gralloc
#endif // __GR_ION_ALLOC_H__
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