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