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88 lines
2.8 KiB
88 lines
2.8 KiB
/*
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* Copyright (c) 2011-2018, The Linux Foundation. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __GR_ION_ALLOC_H__
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#define __GR_ION_ALLOC_H__
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#include <linux/msm_ion.h>
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#define FD_INIT -1
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namespace gralloc {
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enum {
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CACHE_CLEAN = 0x1,
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CACHE_INVALIDATE,
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CACHE_CLEAN_AND_INVALIDATE,
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CACHE_READ_DONE
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};
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struct AllocData {
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void *base = NULL;
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int fd = -1;
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int ion_handle = -1;
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unsigned int offset = 0;
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unsigned int size = 0;
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unsigned int align = 1;
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uintptr_t handle = 0;
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bool uncached = false;
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unsigned int flags = 0x0;
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unsigned int heap_id = 0x0;
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unsigned int alloc_type = 0x0;
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};
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class IonAlloc {
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public:
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IonAlloc() { ion_dev_fd_ = FD_INIT; }
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~IonAlloc() { CloseIonDevice(); }
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bool Init();
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int AllocBuffer(AllocData *data);
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int FreeBuffer(void *base, unsigned int size, unsigned int offset, int fd, int ion_handle);
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int MapBuffer(void **base, unsigned int size, unsigned int offset, int fd);
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int ImportBuffer(int fd);
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int UnmapBuffer(void *base, unsigned int size, unsigned int offset);
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int CleanBuffer(void *base, unsigned int size, unsigned int offset, int handle, int op, int fd);
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private:
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#ifndef TARGET_ION_ABI_VERSION
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const char *kIonDevice = "/dev/ion";
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#endif
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int OpenIonDevice();
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void CloseIonDevice();
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int ion_dev_fd_;
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};
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} // namespace gralloc
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#endif // __GR_ION_ALLOC_H__
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