diff options
| author | Lajos Molnar <molnar@ti.com> | 2011-12-16 14:10:28 +0800 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2011-12-26 22:33:02 +0800 |
| commit | e5753e9e86852ebf88e5a2f33ace5fd01b53d810 (patch) | |
| tree | 32420e55175dcb6249f769c86581dee77319fbfa /arch | |
| parent | cc11ea9843b7ceb4af53b067ed864be1eb00dcdb (diff) | |
TILER: Added key-id enforcement.
TILER block lookup is now based on key & id. However, it is still
possible to look up a block's key & id based on its system space
address.
Signed-off-by: Lajos Molnar <molnar@ti.com>
TILER: Added address space support for mmap.
Now each TILER buffer occupies a range of the correct size in
TILER's mmap memory space (offset + size).
Signed-off-by: Lajos Molnar <molnar@ti.com>
TILER: Added support for partial mmaping of TILER buffers
Added support for mmapping only a portion of a TILER buffer.
Also added helper functions that can be used by other drivers that
use TILER to mmap and ioremap portions of TILER blocks.
Signed-off-by: Lajos Molnar <molnar@ti.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/include/mach/tiler.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/include/mach/tiler.h b/arch/arm/mach-omap2/include/mach/tiler.h index 6f0757b9b24..be29f3ce3e2 100644 --- a/arch/arm/mach-omap2/include/mach/tiler.h +++ b/arch/arm/mach-omap2/include/mach/tiler.h @@ -26,6 +26,8 @@ #define TILER_MAX_NUM_BLOCKS 16 +#include <linux/mm.h> + #define TILIOC_GBLK _IOWR('z', 100, struct tiler_block_info) #define TILIOC_FBLK _IOW('z', 101, struct tiler_block_info) #define TILIOC_GSSP _IOWR('z', 102, u32) @@ -125,6 +127,36 @@ s32 tiler_allocx(struct tiler_block_t *blk, enum tiler_fmt fmt, u32 align, u32 offs, u32 gid, pid_t pid); /** + * Mmaps a portion of a tiler block to a virtual address. Use this method in + * your driver's mmap function to potentially combine multiple tiler blocks as + * one virtual buffer. + * + * @param blk pointer to tiler block data + * @param offs offset from where to map (must be page aligned) + * @param size size of area to map (must be page aligned) + * @param addr virtual address + * + * @return error status + */ +s32 tiler_mmap_blk(struct tiler_block_t *blk, u32 offs, u32 size, + struct vm_area_struct *vma, u32 voffs); + +/** + * Ioremaps a portion of a tiler block. Use this method in your driver instead + * of ioremap to potentially combine multiple tiler blocks as one virtual + * buffer. + * + * @param blk pointer to tiler block data + * @param offs offset from where to map (must be page aligned) + * @param size size of area to map (must be page aligned) + * @param addr virtual address + * + * @return error status + */ +s32 tiler_ioremap_blk(struct tiler_block_t *blk, u32 offs, u32 size, u32 addr, + u32 mtype); + +/** * Maps an existing buffer to a 1D or 2D TILER area for the * current process with group ID 0. * |