diff options
| author | Xinyu Chen <xinyu.chen@freescale.com> | 2012-04-26 10:19:39 +0800 |
|---|---|---|
| committer | Xinyu Chen <xinyu.chen@freescale.com> | 2012-04-26 13:32:33 +0800 |
| commit | 698e761daab207dcfd40dffdf43b82f0fded9d7d (patch) | |
| tree | 81e2b46fb4c3fc9f477e38d4965f6aec556ee411 /include | |
| parent | 2897d6961e17d1f2bed19c5101b4ecf0472637f7 (diff) | |
ENGR00180865-2 ion: Add imx ion allocator driver support
Enable ion in drivers Kconfig
Add imx ion allocator device driver
Add ION_IOC_PHYS ioctl for user to get phys addr of buffers
Correct the remap pfn pgprot to writecombine
Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ion.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/ion.h b/include/linux/ion.h index aed8349279ed..22b9d621d299 100644 --- a/include/linux/ion.h +++ b/include/linux/ion.h @@ -341,4 +341,12 @@ struct ion_custom_data { */ #define ION_IOC_CUSTOM _IOWR(ION_IOC_MAGIC, 6, struct ion_custom_data) +/** + * DOC: ION_IOC_PHYS - get allocated memory physical address + * + * Takes an ion_fd_data struct with the handle field populated with a valid + * opaque handle. Returns the address + */ +#define ION_IOC_PHYS _IOWR(ION_IOC_MAGIC, 7, struct ion_fd_data) + #endif /* _LINUX_ION_H */ |