Convert the nios2 architecture to make use of the new asm-generic/io.h to provide address mapping functions. As nios2 actually performs non-identity mapping between physical & virtual addresses we can't simply make use of the generic functions, with the exception of being able to drop our no-op unmap_physmem() and definitions of unused map flags.
Feedback from architecture maintainers is welcome.
Signed-off-by: Paul Burton paul.burton@imgtec.com Cc: Thomas Chou thomas@wytron.com.tw ---
arch/nios2/include/asm/io.h | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h index e951500..4e5b44a 100644 --- a/arch/nios2/include/asm/io.h +++ b/arch/nios2/include/asm/io.h @@ -19,9 +19,6 @@ static inline void sync(void) * properties specified by "flags". */ #define MAP_NOCACHE 1 -#define MAP_WRCOMBINE 0 -#define MAP_WRBACK 0 -#define MAP_WRTHROUGH 0
static inline void * map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) @@ -32,20 +29,22 @@ map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) else return (void *)(paddr | gd->arch.mem_region_base); } +#define map_physmem map_physmem
-/* - * Take down a mapping set up by map_physmem(). - */ -static inline void unmap_physmem(void *vaddr, unsigned long flags) +static inline void *phys_to_virt(phys_addr_t paddr) { + DECLARE_GLOBAL_DATA_PTR;
+ return (void *)(paddr | gd->arch.mem_region_base); } +#define phys_to_virt phys_to_virt
static inline phys_addr_t virt_to_phys(void * vaddr) { DECLARE_GLOBAL_DATA_PTR; return (phys_addr_t)vaddr & gd->arch.physaddr_mask; } +#define virt_to_phys virt_to_phys
#define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v)) #define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v)) @@ -171,4 +170,6 @@ static inline void outsl (unsigned long port, const void *src, unsigned long cou #define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c)) #define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
+#include <asm-generic/io.h> + #endif /* __ASM_NIOS2_IO_H_ */