kernel-headers/linux/ion.h

/****************************************************************************
 ****************************************************************************
 ***
 ***   This header was automatically generated from a Linux kernel header
 ***   of the same name, to make information necessary for userspace to
 ***   call into the kernel available to libc.  It contains only constants,
 ***   structures, and macros generated from the original header, and thus,
 ***   contains no copyrightable information.
 ***
 ***   To edit the content of this header, modify the corresponding
 ***   source file (e.g. under external/kernel-headers/original/) then
 ***   run bionic/libc/kernel/tools/update_all.py
 ***
 ***   Any manual change here will be lost the next time this script will
 ***   be run. You've been warned!
 ***
 ****************************************************************************
 ****************************************************************************/
#ifndef _UAPI_LINUX_ION_H
#define _UAPI_LINUX_ION_H
#include <linux/ioctl.h>
#include <linux/types.h>
typedef int ion_user_handle_t;
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_CUSTOM,
};
#define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)
#define ION_FLAG_CACHED 1
#define ION_FLAG_CACHED_NEEDS_SYNC 2
struct ion_allocation_data {
  size_t len;
  size_t align;
  unsigned int heap_id_mask;
  unsigned int flags;
  ion_user_handle_t handle;
};
struct ion_fd_data {
  ion_user_handle_t handle;
  int fd;
};
struct ion_handle_data {
  ion_user_handle_t handle;
};
struct ion_custom_data {
  unsigned int cmd;
  unsigned long arg;
};
#define MAX_HEAP_NAME 32
struct ion_heap_data {
  char name[MAX_HEAP_NAME];
  __u32 type;
  __u32 heap_id;
  __u32 reserved0;
  __u32 reserved1;
  __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 _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)
#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)
#endif