projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 11980c2a RL |
1 | /* |
| 2 | * include/linux/ashmem.h | |
| 3 | * | |
| 4 | * Copyright 2008 Google Inc. | |
| 5 | * Author: Robert Love | |
| 6 | * | |
| 7 | * This file is dual licensed. It may be redistributed and/or modified | |
| 8 | * under the terms of the Apache 2.0 License OR version 2 of the GNU | |
| 9 | * General Public License. | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef _LINUX_ASHMEM_H | |
| 13 | #define _LINUX_ASHMEM_H | |
| 14 | ||
| 15 | #include <linux/limits.h> | |
| 16 | #include <linux/ioctl.h> | |
| e9f5b814 | 17 | #include <linux/compat.h> |
| 11980c2a RL |
18 | |
| 19 | #define ASHMEM_NAME_LEN 256 | |
| 20 | ||
| 21 | #define ASHMEM_NAME_DEF "dev/ashmem" | |
| 22 | ||
| 23 | /* Return values from ASHMEM_PIN: Was the mapping purged while unpinned? */ | |
| 24 | #define ASHMEM_NOT_PURGED 0 | |
| 25 | #define ASHMEM_WAS_PURGED 1 | |
| 26 | ||
| 27 | /* Return values from ASHMEM_GET_PIN_STATUS: Is the mapping pinned? */ | |
| 28 | #define ASHMEM_IS_UNPINNED 0 | |
| 29 | #define ASHMEM_IS_PINNED 1 | |
| 30 | ||
| 31 | struct ashmem_pin { | |
| 32 | __u32 offset; /* offset into region, in bytes, page-aligned */ | |
| 33 | __u32 len; /* length forward from offset, in bytes, page-aligned */ | |
| 34 | }; | |
| 35 | ||
| 36 | #define __ASHMEMIOC 0x77 | |
| 37 | ||
| 38 | #define ASHMEM_SET_NAME _IOW(__ASHMEMIOC, 1, char[ASHMEM_NAME_LEN]) | |
| 39 | #define ASHMEM_GET_NAME _IOR(__ASHMEMIOC, 2, char[ASHMEM_NAME_LEN]) | |
| 40 | #define ASHMEM_SET_SIZE _IOW(__ASHMEMIOC, 3, size_t) | |
| 41 | #define ASHMEM_GET_SIZE _IO(__ASHMEMIOC, 4) | |
| 42 | #define ASHMEM_SET_PROT_MASK _IOW(__ASHMEMIOC, 5, unsigned long) | |
| 43 | #define ASHMEM_GET_PROT_MASK _IO(__ASHMEMIOC, 6) | |
| 44 | #define ASHMEM_PIN _IOW(__ASHMEMIOC, 7, struct ashmem_pin) | |
| 45 | #define ASHMEM_UNPIN _IOW(__ASHMEMIOC, 8, struct ashmem_pin) | |
| 46 | #define ASHMEM_GET_PIN_STATUS _IO(__ASHMEMIOC, 9) | |
| 47 | #define ASHMEM_PURGE_ALL_CACHES _IO(__ASHMEMIOC, 10) | |
| 48 | ||
| e9f5b814 SC |
49 | /* support of 32bit userspace on 64bit platforms */ |
| 50 | #ifdef CONFIG_COMPAT | |
| 51 | #define COMPAT_ASHMEM_SET_SIZE _IOW(__ASHMEMIOC, 3, compat_size_t) | |
| 52 | #define COMPAT_ASHMEM_SET_PROT_MASK _IOW(__ASHMEMIOC, 5, unsigned int) | |
| 53 | #endif | |
| 54 | ||
| 11980c2a | 55 | #endif /* _LINUX_ASHMEM_H */ |