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/*
* ion_uapi.h
*
* Copyright 2018 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __EXYNOS_ION_H__
#define __EXYNOS_ION_H__
#include <linux/ioctl.h>
#include <linux/types.h>
enum ion_heap_type {
ION_HEAP_TYPE_SYSTEM,
ION_HEAP_TYPE_SYSTEM_CONTIG,
ION_HEAP_TYPE_CARVEOUT,
ION_HEAP_TYPE_CHUNK,
ION_HEAP_TYPE_DMA,
ION_HEAP_TYPE_HPA
};
#define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
/*
* ION LEGACY UAPI
*/
struct ion_allocation_data_legacy {
size_t len;
size_t align;
unsigned int heap_id_mask;
unsigned int flags;
int handle;
};
struct ion_fd_data {
int handle;
int fd;
};
struct ion_fd_partial_data {
int handle;
int fd;
off_t offset;
size_t len;
};
struct ion_handle_data {
int handle;
};
struct ion_custom_data {
unsigned int cmd;
unsigned long arg;
};
/*
* ION MODERN UAPI
*/
struct ion_allocation_data_modern {
__u64 len;
__u32 heap_id_mask;
__u32 flags;
__u32 fd;
__u32 unused;
};
#define MAX_HEAP_NAME 32
#define ION_HEAPDATA_FLAGS_DEFER_FREE 1
#define ION_HEAPDATA_FLAGS_ALLOW_PROTECTION 2
#define ION_HEAPDATA_FLAGS_UNTOUCHABLE 4
struct ion_heap_data {
char name[MAX_HEAP_NAME];
__u32 type;
__u32 heap_id;
__u32 size; /* reserved 0 */
__u32 heap_flags; /* reserved 1 */
__u32 reserved2;
};
struct ion_heap_query {
__u32 cnt;
__u32 reserved0;
__u64 heaps;
__u32 reserved1;
__u32 reserved2;
};
#define ION_IOC_MAGIC 'I'
#define ION_IOC_ALLOC_LEGACY _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data_legacy)
#define ION_IOC_ALLOC_MODERN _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data_modern)
#define ION_IOC_FREE _IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
#define ION_IOC_MAP _IOWR(ION_IOC_MAGIC, 2, struct ion_fd_data)
#define ION_IOC_SHARE _IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
#define ION_IOC_IMPORT _IOWR(ION_IOC_MAGIC, 5, struct ion_fd_data)
#define ION_IOC_SYNC _IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data)
#define ION_IOC_CUSTOM _IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data)
#define ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, struct ion_heap_query)
#define ION_IOC_SYNC_PARTIAL _IOWR(ION_IOC_MAGIC, 9, struct ion_fd_partial_data)
#endif /* __EXYNOS_ION_H__ */
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