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      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>
     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 };
     32 #define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
     33 #define ION_FLAG_CACHED 1
     34 #define ION_FLAG_CACHED_NEEDS_SYNC 2
     35 struct 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 };
     42 struct ion_fd_data {
     43   ion_user_handle_t handle;
     44   int fd;
     45 };
     46 struct ion_handle_data {
     47   ion_user_handle_t handle;
     48 };
     49 struct ion_custom_data {
     50   unsigned int cmd;
     51   unsigned long arg;
     52 };
     53 #define MAX_HEAP_NAME 32
     54 struct 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 };
     62 struct 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