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/**
* Copyright (c) 2019, 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 RPCMEM_H
#define RPCMEM_H
#include "AEEStdDef.h"
/**
* RPCMEM_DEFAULT_HEAP
* Dynamicaly select the heap to use. This should be ok for most usecases.
*/
#define RPCMEM_DEFAULT_HEAP -1
/**
* RPCMEM_DEFAULT_FLAGS should allocate memory with the same properties
* as the ION_FLAG_CACHED flag
*/
#ifdef ION_FLAG_CACHED
#define RPCMEM_DEFAULT_FLAGS ION_FLAG_CACHED
#else
#define RPCMEM_DEFAULT_FLAGS 1
#endif
/**
* RPCMEM_FLAG_UNCACHED
* ION_FLAG_CACHED should be defined as 1
*/
#define RPCMEM_FLAG_UNCACHED 0
#define RPCMEM_FLAG_CACHED RPCMEM_DEFAULT_FLAGS
/**
* examples:
*
* heap 22, uncached, 1kb
* rpcmem_alloc(22, 0, 1024);
* rpcmem_alloc(22, RPCMEM_FLAG_UNCACHED, 1024);
*
* heap 21, cached, 2kb
* rpcmem_alloc(21, RPCMEM_FLAG_CACHED, 2048);
* #include <ion.h>
* rpcmem_alloc(21, ION_FLAG_CACHED, 2048);
*
* just give me the defaults, 2kb
* rpcmem_alloc(RPCMEM_DEFAULT_HEAP, RPCMEM_DEFAULT_FLAGS, 2048);
* rpcmem_alloc_def(2048);
*
* give me the default flags, but from heap 18, 4kb
* rpcmem_alloc(18, RPCMEM_DEFAULT_FLAGS, 4096);
*
*/
#define ION_SECURE_FLAGS ((1 << 31) | (1 << 19))
#ifdef __cplusplus
extern "C" {
#endif
/**
* call once to initialize the library
* Note: should not call this if rpcmem is linked from libadsprpc.so
* /libcdsprpc.so/libmdsprpc.so/libsdsprpc.so
*/
void rpcmem_init(void);
/**
* call once for cleanup
* Note: should not call this if rpcmem is linked from libadsprpc.so
* /libcdsprpc.so/libmdsprpc.so/libsdsprpc.so
*/
void rpcmem_deinit(void);
/**
* Allocate via ION a buffer of size
* @heapid, the heap id to use
* @flags, ion flags to use to when allocating
* @size, the buffer size to allocate
* @retval, 0 on failure, pointer to buffer on success
*
* For example:
* buf = rpcmem_alloc(RPCMEM_DEFAULT_HEAP, RPCMEM_DEFAULT_FLAGS, size);
*/
void* rpcmem_alloc(int heapid, uint32 flags, int size);
/**
* allocate with default settings
*/
#if !defined(WINNT) && !defined (_WIN32_WINNT)
__attribute__((unused))
#endif
static __inline void* rpcmem_alloc_def(int size) {
return rpcmem_alloc(RPCMEM_DEFAULT_HEAP, RPCMEM_DEFAULT_FLAGS, size);
}
/**
* free buffer, ignores invalid buffers
*/
void rpcmem_free(void* po);
/**
* returns associated fd
*/
int rpcmem_to_fd(void* po);
#ifdef __cplusplus
}
#endif
#define RPCMEM_HEAP_DEFAULT 0x80000000
#define RPCMEM_HEAP_NOREG 0x40000000
#define RPCMEM_HEAP_UNCACHED 0x20000000
#define RPCMEM_HEAP_NOVA 0x10000000
#define RPCMEM_HEAP_NONCOHERENT 0x08000000
#endif //RPCMEM_H
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