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118 lines
2.8 KiB
118 lines
2.8 KiB
/*
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* ion_uapi.h
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*
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* Copyright 2018 Samsung Electronics Co., Ltd.
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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 __EXYNOS_ION_H__
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#define __EXYNOS_ION_H__
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#include <linux/ioctl.h>
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#include <linux/types.h>
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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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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_HPA
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};
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#define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
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/*
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* ION LEGACY UAPI
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*/
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struct ion_allocation_data_legacy {
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size_t len;
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size_t align;
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unsigned int heap_id_mask;
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unsigned int flags;
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int handle;
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};
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struct ion_fd_data {
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int handle;
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int fd;
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};
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struct ion_fd_partial_data {
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int handle;
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int fd;
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off_t offset;
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size_t len;
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};
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struct ion_handle_data {
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int handle;
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};
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struct ion_custom_data {
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unsigned int cmd;
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unsigned long arg;
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};
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/*
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* ION MODERN UAPI
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*/
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struct ion_allocation_data_modern {
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__u64 len;
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__u32 heap_id_mask;
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__u32 flags;
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__u32 fd;
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__u32 unused;
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};
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#define MAX_HEAP_NAME 32
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#define ION_HEAPDATA_FLAGS_DEFER_FREE 1
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#define ION_HEAPDATA_FLAGS_ALLOW_PROTECTION 2
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#define ION_HEAPDATA_FLAGS_UNTOUCHABLE 4
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struct ion_heap_data {
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char name[MAX_HEAP_NAME];
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__u32 type;
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__u32 heap_id;
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__u32 size; /* reserved 0 */
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__u32 heap_flags; /* reserved 1 */
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__u32 reserved2;
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};
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struct ion_heap_query {
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__u32 cnt;
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__u32 reserved0;
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__u64 heaps;
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__u32 reserved1;
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__u32 reserved2;
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};
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#define ION_IOC_MAGIC 'I'
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#define ION_IOC_ALLOC_LEGACY _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data_legacy)
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#define ION_IOC_ALLOC_MODERN _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data_modern)
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#define ION_IOC_FREE _IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
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#define ION_IOC_MAP _IOWR(ION_IOC_MAGIC, 2, struct ion_fd_data)
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#define ION_IOC_SHARE _IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
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#define ION_IOC_IMPORT _IOWR(ION_IOC_MAGIC, 5, struct ion_fd_data)
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#define ION_IOC_SYNC _IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data)
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#define ION_IOC_CUSTOM _IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data)
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#define ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, struct ion_heap_query)
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#define ION_IOC_SYNC_PARTIAL _IOWR(ION_IOC_MAGIC, 9, struct ion_fd_partial_data)
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#endif /* __EXYNOS_ION_H__ */
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