diff options
Diffstat (limited to 'include/asm-powerpc')
| -rw-r--r-- | include/asm-powerpc/iommu.h | 22 | ||||
| -rw-r--r-- | include/asm-powerpc/tce.h | 3 |
2 files changed, 22 insertions, 3 deletions
diff --git a/include/asm-powerpc/iommu.h b/include/asm-powerpc/iommu.h index a5e9864..39fad68 100644 --- a/include/asm-powerpc/iommu.h +++ b/include/asm-powerpc/iommu.h @@ -22,17 +22,35 @@ #define _ASM_IOMMU_H #ifdef __KERNEL__ -#include <asm/types.h> +#include <linux/compiler.h> #include <linux/spinlock.h> #include <linux/device.h> #include <linux/dma-mapping.h> +#include <asm/types.h> +#include <asm/bitops.h> + +#define IOMMU_PAGE_SHIFT 12 +#define IOMMU_PAGE_SIZE (ASM_CONST(1) << IOMMU_PAGE_SHIFT) +#define IOMMU_PAGE_MASK (~((1 << IOMMU_PAGE_SHIFT) - 1)) +#define IOMMU_PAGE_ALIGN(addr) _ALIGN_UP(addr, IOMMU_PAGE_SIZE) + +#ifndef __ASSEMBLY__ + +/* Pure 2^n version of get_order */ +static __inline__ __attribute_const__ int get_iommu_order(unsigned long size) +{ + return __ilog2((size - 1) >> IOMMU_PAGE_SHIFT) + 1; +} + +#endif /* __ASSEMBLY__ */ + /* * IOMAP_MAX_ORDER defines the largest contiguous block * of dma space we can get. IOMAP_MAX_ORDER = 13 * allows up to 2**12 pages (4096 * 4096) = 16 MB */ -#define IOMAP_MAX_ORDER 13 +#define IOMAP_MAX_ORDER 13 struct iommu_table { unsigned long it_busno; /* Bus number this table belongs to */ diff --git a/include/asm-powerpc/tce.h b/include/asm-powerpc/tce.h index c9483ad..f663634 100644 --- a/include/asm-powerpc/tce.h +++ b/include/asm-powerpc/tce.h @@ -22,6 +22,8 @@ #define _ASM_POWERPC_TCE_H #ifdef __KERNEL__ +#include <asm/iommu.h> + /* * Tces come in two formats, one for the virtual bus and a different * format for PCI @@ -33,7 +35,6 @@ #define TCE_SHIFT 12 #define TCE_PAGE_SIZE (1 << TCE_SHIFT) -#define TCE_PAGE_FACTOR (PAGE_SHIFT - TCE_SHIFT) #define TCE_ENTRY_SIZE 8 /* each TCE is 64 bits */ |
