1 /****************************************************************************
2  ****************************************************************************
3  ***
4  ***   This header was automatically generated from a Linux kernel header
5  ***   of the same name, to make information necessary for userspace to
6  ***   call into the kernel available to libc.  It contains only constants,
7  ***   structures, and macros generated from the original header, and thus,
8  ***   contains no copyrightable information.
9  ***
10  ***   To edit the content of this header, modify the corresponding
11  ***   source file (e.g. under external/kernel-headers/original/) then
12  ***   run bionic/libc/kernel/tools/update_all.py
13  ***
14  ***   Any manual change here will be lost the next time this script will
15  ***   be run. You've been warned!
16  ***
17  ****************************************************************************
18  ****************************************************************************/
19 #ifndef _LINUX_ION_H
20 #define _LINUX_ION_H
21 #include <linux/ioctl.h>
22 #include <linux/types.h>
23 enum ion_heap_type {
24   ION_HEAP_TYPE_SYSTEM = 0,
25   ION_HEAP_TYPE_DMA = 2,
26   ION_HEAP_TYPE_CUSTOM = 16,
27   ION_HEAP_TYPE_MAX = 31,
28 };
29 enum ion_heap_id {
30   ION_HEAP_SYSTEM = (1 << ION_HEAP_TYPE_SYSTEM),
31   ION_HEAP_DMA_START = (ION_HEAP_SYSTEM << 1),
32   ION_HEAP_DMA_END = (ION_HEAP_DMA_START << 7),
33   ION_HEAP_CUSTOM_START = (ION_HEAP_DMA_END << 1),
34   ION_HEAP_CUSTOM_END = (ION_HEAP_CUSTOM_START << 22),
35 };
36 #define ION_NUM_MAX_HEAPS (32)
37 #define ION_FLAG_CACHED 1
38 struct ion_allocation_data {
39   __u64 len;
40   __u32 heap_id_mask;
41   __u32 flags;
42   __u32 fd;
43   __u32 unused;
44 };
45 #define MAX_HEAP_NAME 32
46 struct ion_heap_data {
47   char name[MAX_HEAP_NAME];
48   __u32 type;
49   __u32 heap_id;
50   __u32 reserved0;
51   __u32 reserved1;
52   __u32 reserved2;
53 };
54 struct ion_heap_query {
55   __u32 cnt;
56   __u32 reserved0;
57   __u64 heaps;
58   __u32 reserved1;
59   __u32 reserved2;
60 };
61 #define ION_IOC_MAGIC 'I'
62 #define ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)
63 #define ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, struct ion_heap_query)
64 #define ION_IOC_ABI_VERSION _IOR(ION_IOC_MAGIC, 9, __u32)
65 #endif
66