diff options
Diffstat (limited to 'drivers/iommu/omap-iovmm.c')
| -rw-r--r-- | drivers/iommu/omap-iovmm.c | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/drivers/iommu/omap-iovmm.c b/drivers/iommu/omap-iovmm.c index b332392397ce..9852101cf042 100644 --- a/drivers/iommu/omap-iovmm.c +++ b/drivers/iommu/omap-iovmm.c @@ -17,15 +17,59 @@ #include <linux/device.h> #include <linux/scatterlist.h> #include <linux/iommu.h> +#include <linux/omap-iommu.h> #include <asm/cacheflush.h> #include <asm/mach/map.h> #include <plat/iommu.h> -#include <plat/iovmm.h> #include "omap-iopgtable.h" +/* + * IOVMF_FLAGS: attribute for iommu virtual memory area(iovma) + * + * lower 16 bit is used for h/w and upper 16 bit is for s/w. + */ +#define IOVMF_SW_SHIFT 16 + +/* + * iovma: h/w flags derived from cam and ram attribute + */ +#define IOVMF_CAM_MASK (~((1 << 10) - 1)) +#define IOVMF_RAM_MASK (~IOVMF_CAM_MASK) + +#define IOVMF_PGSZ_MASK (3 << 0) +#define IOVMF_PGSZ_1M MMU_CAM_PGSZ_1M +#define IOVMF_PGSZ_64K MMU_CAM_PGSZ_64K +#define IOVMF_PGSZ_4K MMU_CAM_PGSZ_4K +#define IOVMF_PGSZ_16M MMU_CAM_PGSZ_16M + +#define IOVMF_ENDIAN_MASK (1 << 9) +#define IOVMF_ENDIAN_BIG MMU_RAM_ENDIAN_BIG + +#define IOVMF_ELSZ_MASK (3 << 7) +#define IOVMF_ELSZ_16 MMU_RAM_ELSZ_16 +#define IOVMF_ELSZ_32 MMU_RAM_ELSZ_32 +#define IOVMF_ELSZ_NONE MMU_RAM_ELSZ_NONE + +#define IOVMF_MIXED_MASK (1 << 6) +#define IOVMF_MIXED MMU_RAM_MIXED + +/* + * iovma: s/w flags, used for mapping and umapping internally. + */ +#define IOVMF_MMIO (1 << IOVMF_SW_SHIFT) +#define IOVMF_ALLOC (2 << IOVMF_SW_SHIFT) +#define IOVMF_ALLOC_MASK (3 << IOVMF_SW_SHIFT) + +/* "superpages" is supported just with physically linear pages */ +#define IOVMF_DISCONT (1 << (2 + IOVMF_SW_SHIFT)) +#define IOVMF_LINEAR (2 << (2 + IOVMF_SW_SHIFT)) +#define IOVMF_LINEAR_MASK (3 << (2 + IOVMF_SW_SHIFT)) + +#define IOVMF_DA_FIXED (1 << (4 + IOVMF_SW_SHIFT)) + static struct kmem_cache *iovm_area_cachep; /* return the offset of the first scatterlist entry in a sg table */ |