ion.h revision 96c1db7b9d601c31d103389cac074a6cce0d7633 
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 _UAPI_LINUX_ION_H
20#define _UAPI_LINUX_ION_H
21#include <linux/ioctl.h>
22#include <linux/types.h>
23typedef int ion_user_handle_t;
24enum ion_heap_type {
25  ION_HEAP_TYPE_SYSTEM,
26  ION_HEAP_TYPE_SYSTEM_CONTIG,
27  ION_HEAP_TYPE_CARVEOUT,
28  ION_HEAP_TYPE_CHUNK,
29  ION_HEAP_TYPE_DMA,
30  ION_HEAP_TYPE_CUSTOM,
31};
32#define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
33#define ION_FLAG_CACHED 1
34#define ION_FLAG_CACHED_NEEDS_SYNC 2
35struct ion_allocation_data {
36  size_t len;
37  size_t align;
38  unsigned int heap_id_mask;
39  unsigned int flags;
40  ion_user_handle_t handle;
41};
42struct ion_fd_data {
43  ion_user_handle_t handle;
44  int fd;
45};
46struct ion_handle_data {
47  ion_user_handle_t handle;
48};
49struct ion_custom_data {
50  unsigned int cmd;
51  unsigned long arg;
52};
53#define MAX_HEAP_NAME 32
54struct ion_heap_data {
55  char name[MAX_HEAP_NAME];
56  __u32 type;
57  __u32 heap_id;
58  __u32 reserved0;
59  __u32 reserved1;
60  __u32 reserved2;
61};
62struct ion_heap_query {
63  __u32 cnt;
64  __u32 reserved0;
65  __u64 heaps;
66  __u32 reserved1;
67  __u32 reserved2;
68};
69#define ION_IOC_MAGIC 'I'
70#define ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)
71#define ION_IOC_FREE _IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
72#define ION_IOC_MAP _IOWR(ION_IOC_MAGIC, 2, struct ion_fd_data)
73#define ION_IOC_SHARE _IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
74#define ION_IOC_IMPORT _IOWR(ION_IOC_MAGIC, 5, struct ion_fd_data)
75#define ION_IOC_SYNC _IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data)
76#define ION_IOC_CUSTOM _IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data)
77#define ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, struct ion_heap_query)
78#endif
79