#include <linux/ioctl.h>
#include <linux/types.h>

Include dependency graph for ion.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	ion_allocation_data
	DOC: Ion Userspace API. More...

struct	ion_heap_data
	struct ion_heap_data - data about a heap More...

struct	ion_heap_query
	struct ion_heap_query - collection of data about all heaps More...

Macros
#define	ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)

#define	ION_FLAG_CACHED 1
	allocation flags - the lower 16 bits are used by core ion, the upper 16 bits are reserved for use by the heaps themselves.

#define	MAX_HEAP_NAME 32

#define	ION_IOC_MAGIC 'I'

#define	ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)
	DOC: ION_IOC_ALLOC - allocate memory.

#define	ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, struct ion_heap_query)
	DOC: ION_IOC_HEAP_QUERY - information about available heaps.

Enumerations
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 }
	enum ion_heap_types - list of all possible types of heaps More...

Macro Definition Documentation

◆ ION_FLAG_CACHED

#define ION_FLAG_CACHED 1

allocation flags - the lower 16 bits are used by core ion, the upper 16 bits are reserved for use by the heaps themselves.

Definition at line 37 of file ion.h.

#define ION_IOC_ALLOC _IOWR(ION_IOC_MAGIC, 0, struct ion_allocation_data)

DOC: ION_IOC_ALLOC - allocate memory.

Takes an ion_allocation_data struct and returns it with the handle field populated with the opaque handle for the allocation.

Definition at line 93 of file ion.h.

#define ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, struct ion_heap_query)

DOC: ION_IOC_HEAP_QUERY - information about available heaps.

Takes an ion_heap_query structure and populates information about available Ion heaps.

Definition at line 101 of file ion.h.

#define ION_IOC_MAGIC 'I'

Definition at line 85 of file ion.h.

#define ION_NUM_HEAP_IDS (sizeof(unsigned int) * 8)

Definition at line 26 of file ion.h.

#define MAX_HEAP_NAME 32

Definition at line 60 of file ion.h.

enum ion_heap_types - list of all possible types of heaps

Enumerator
ION_HEAP_TYPE_SYSTEM	memory allocated via vmalloc
ION_HEAP_TYPE_SYSTEM_CONTIG	memory allocated via kmalloc
ION_HEAP_TYPE_CARVEOUT	memory allocated from a prereserved carveout heap, allocations are physically contiguous
ION_HEAP_TYPE_CHUNK
ION_HEAP_TYPE_DMA	memory allocated via DMA API
ION_HEAP_TYPE_CUSTOM	must be last so device specific heaps always are at the end of this enum

Definition at line 15 of file ion.h.