diff options
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/mach-omap2/include/mach/tiler.h | 87 |
1 files changed, 85 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/include/mach/tiler.h b/arch/arm/mach-omap2/include/mach/tiler.h index 6e25dcc..1bdc6bd 100644 --- a/arch/arm/mach-omap2/include/mach/tiler.h +++ b/arch/arm/mach-omap2/include/mach/tiler.h @@ -41,6 +41,7 @@ #define TILER_H #include <linux/mm.h> +#include <linux/scatterlist.h> /* * ----------------------------- API Definitions ----------------------------- @@ -378,9 +379,91 @@ struct tiler_pa_info { typedef struct mem_info *tiler_blk_handle; -/* NOTE: this will take ownership pa->mem (will free it) */ +/** + * Allocate a 1D area of container space in the Tiler + * + * @param pa ptr to tiler_pa_info structure + * + * @return handle Handle to tiler block information. NULL on error. + * + * NOTE: this will take ownership pa->mem (will free it) + * + */ tiler_blk_handle tiler_map_1d_block(struct tiler_pa_info *pa); -void tiler_free_block(tiler_blk_handle block); + +/** + * Allocate an area of container space in the Tiler + * + * @param fmt Tiler bpp mode + * @param width Width in pixels + * @param height Height in pixels + * @param ssptr Value of tiler physical address of allocation + * + * @return handle Handle to tiler block information. NULL on error. + * + * NOTE: For 1D allocations, specify the full size in the width field, and + * specify a height of 1. + */ +tiler_blk_handle tiler_alloc_block_area(enum tiler_fmt fmt, u32 width, + u32 height, u32 *ssptr); + +/** + * Free a reserved area in the Tiler + * + * @param handle Handle to tiler block information + * + */ +void tiler_free_block_area(tiler_blk_handle block); + +/** + * Pins a set of physical pages into the Tiler using the area defined in a + * handle + * + * @param handle Handle to tiler block information + * @param sg Scatterlist of physical pages + * @param nents Number of entries in scatterlist + * + * @return error status. + */ +s32 tiler_pin_block(tiler_blk_handle handle, struct scatterlist *sg, u32 nents); + +/** + * Unpins a set of physical pages from the Tiler + * + * @param handle Handle to tiler block information + * + */ +void tiler_unpin_block(tiler_blk_handle handle); + + +/** + * Gives Tiler physical address for a given tiler_blk_handle + * + * @param handle Handle to tiler block information + * + * @return phsyical address. NULL on error. + */ +u32 tiler_handle_to_phys(tiler_blk_handle handle); + +/** + * Gives memory requirements for a given container allocation + * + * @param fmt Tiler bpp mode + * @param width Width in pixels + * @param height Height in pixels + * + * @return Number of pages required. On error, returns 0 + */ +u32 tiler_memsize(enum tiler_fmt fmt, u32 width, u32 height); + +/** + * Returns virtual stride of a tiler block + * + * @param handle Handle to tiler block allocation + * + * @return Size of virtual stride + */ +u32 tiler_block_vstride(tiler_blk_handle handle); /* * ---------------------------- IOCTL Definitions ---------------------------- |