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