71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
/*
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* ion.h
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*
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* Memory Allocator functions for ion
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*
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* Copyright 2011 Google, Inc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __SYS_CORE_ION_H
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#define __SYS_CORE_ION_H
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#include <sys/types.h>
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__BEGIN_DECLS
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typedef int ion_user_handle_t;
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enum ion_heap_type {
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ION_HEAP_TYPE_SYSTEM,
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ION_HEAP_TYPE_SYSTEM_CONTIG,
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/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
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ION_HEAP_TYPE_CARVEOUT,
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ION_HEAP_TYPE_CHUNK,
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ION_HEAP_TYPE_DMA,
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ION_HEAP_TYPE_CUSTOM,
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/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
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ION_NUM_HEAPS = 16,
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};
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#define ION_HEAP_SYSTEM_MASK (1 << ION_HEAP_TYPE_SYSTEM)
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#define ION_HEAP_SYSTEM_CONTIG_MASK (1 << ION_HEAP_TYPE_SYSTEM_CONTIG)
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#define ION_HEAP_CARVEOUT_MASK (1 << ION_HEAP_TYPE_CARVEOUT)
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#define ION_HEAP_TYPE_DMA_MASK (1 << ION_HEAP_TYPE_DMA)
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int ion_open();
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int ion_close(int fd);
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int ion_alloc(int fd, size_t len, size_t align, unsigned int heap_mask,
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unsigned int flags, ion_user_handle_t *handle);
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int ion_alloc_fd(int fd, size_t len, size_t align, unsigned int heap_mask,
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unsigned int flags, int *handle_fd);
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int ion_sync_fd(int fd, int handle_fd);
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int ion_free(int fd, ion_user_handle_t handle);
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int ion_map(int fd, ion_user_handle_t handle, size_t length, int prot,
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int flags, off_t offset, unsigned char **ptr, int *map_fd);
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int ion_share(int fd, ion_user_handle_t handle, int *share_fd);
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int ion_import(int fd, int share_fd, ion_user_handle_t *handle);
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/**
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* Add 4.12+ kernel ION interfaces here for forward compatibility
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* This should be needed till the pre-4.12+ ION interfaces are backported.
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*/
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int ion_query_heap_cnt(int fd, int* cnt);
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int ion_query_get_heaps(int fd, int cnt, void* buffers);
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int ion_is_legacy(int fd);
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int ion_cache_invalid(int fd, int handle_fd);
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__END_DECLS
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#endif /* __SYS_CORE_ION_H */
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