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 typedef int ion_user_handle_t;
24 enum 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   ION_NUM_HEAPS = 16,
32 };
33 #define ION_HEAP_SYSTEM_MASK ((1 << ION_HEAP_TYPE_SYSTEM))
34 #define ION_HEAP_SYSTEM_CONTIG_MASK ((1 << ION_HEAP_TYPE_SYSTEM_CONTIG))
35 #define ION_HEAP_CARVEOUT_MASK ((1 << ION_HEAP_TYPE_CARVEOUT))
36 #define ION_HEAP_TYPE_DMA_MASK ((1 << ION_HEAP_TYPE_DMA))
37 #define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
38 #define ION_FLAG_CACHED 1
39 #define ION_FLAG_CACHED_NEEDS_SYNC 2
40 struct ion_allocation_data {
41   size_t len;
42   size_t align;
43   unsigned int heap_id_mask;
44   unsigned int flags;
45   ion_user_handle_t handle;
46 };
47 struct ion_fd_data {
48   ion_user_handle_t handle;
49   int fd;
50 };
51 struct ion_handle_data {
52   ion_user_handle_t handle;
53 };
54 struct ion_custom_data {
55   unsigned int cmd;
56   unsigned long arg;
57 };
58 #define ION_IOC_MAGIC 'I'
59 #define ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)
60 #define ION_IOC_FREE _IOWR(ION_IOC_MAGIC, 1, struct ion_handle_data)
61 #define ION_IOC_MAP _IOWR(ION_IOC_MAGIC, 2, struct ion_fd_data)
62 #define ION_IOC_SHARE _IOWR(ION_IOC_MAGIC, 4, struct ion_fd_data)
63 #define ION_IOC_IMPORT _IOWR(ION_IOC_MAGIC, 5, struct ion_fd_data)
64 #define ION_IOC_SYNC _IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data)
65 #define ION_IOC_CUSTOM _IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data)
66 #endif
67 
68