diff options
Diffstat (limited to 'include/asm-xtensa/io.h')
| -rw-r--r-- | include/asm-xtensa/io.h | 64 |
1 files changed, 32 insertions, 32 deletions
diff --git a/include/asm-xtensa/io.h b/include/asm-xtensa/io.h index 556e5eed34f5..31ffc3f119c1 100644 --- a/include/asm-xtensa/io.h +++ b/include/asm-xtensa/io.h @@ -1,5 +1,5 @@ /* - * linux/include/asm-xtensa/io.h + * include/asm-xtensa/io.h * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive @@ -15,10 +15,11 @@ #include <asm/byteorder.h> #include <linux/types.h> -#include <asm/fixmap.h> - -#define _IO_BASE 0 +#define XCHAL_KIO_CACHED_VADDR 0xf0000000 +#define XCHAL_KIO_BYPASS_VADDR 0xf8000000 +#define XCHAL_KIO_PADDR 0xf0000000 +#define XCHAL_KIO_SIZE 0x08000000 /* * swap functions to change byte order from little-endian to big-endian and @@ -42,40 +43,43 @@ static inline unsigned int _swapl (unsigned int v) static inline unsigned long virt_to_phys(volatile void * address) { - return PHYSADDR((unsigned long)address); + return __pa(address); } static inline void * phys_to_virt(unsigned long address) { - return (void*) CACHED_ADDR(address); + return __va(address); } /* - * IO bus memory addresses are also 1:1 with the physical address + * virt_to_bus and bus_to_virt are deprecated. */ -static inline unsigned long virt_to_bus(volatile void * address) -{ - return PHYSADDR((unsigned long)address); -} - -static inline void * bus_to_virt (unsigned long address) -{ - return (void *) CACHED_ADDR(address); -} +#define virt_to_bus(x) virt_to_phys(x) +#define bus_to_virt(x) phys_to_virt(x) /* - * Change "struct page" to physical address. + * Return the virtual (cached) address for the specified bus memory. + * Note that we currently don't support any address outside the KIO segment. */ static inline void *ioremap(unsigned long offset, unsigned long size) { - return (void *) CACHED_ADDR_IO(offset); + if (offset >= XCHAL_KIO_PADDR + && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE) + return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR); + + else + BUG(); } static inline void *ioremap_nocache(unsigned long offset, unsigned long size) { - return (void *) BYPASS_ADDR_IO(offset); + if (offset >= XCHAL_KIO_PADDR + && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE) + return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR); + else + BUG(); } static inline void iounmap(void *addr) @@ -121,9 +125,6 @@ static inline void __raw_writel(__u32 b, volatile void __iomem *addr) *(__force volatile __u32 *)(addr) = b; } - - - /* These are the definitions for the x86 IO instructions * inb/inw/inl/outb/outw/outl, the "string" versions * insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions @@ -131,11 +132,11 @@ static inline void __raw_writel(__u32 b, volatile void __iomem *addr) * The macros don't do byte-swapping. */ -#define inb(port) readb((u8 *)((port)+_IO_BASE)) -#define outb(val, port) writeb((val),(u8 *)((unsigned long)(port)+_IO_BASE)) -#define inw(port) readw((u16 *)((port)+_IO_BASE)) -#define outw(val, port) writew((val),(u16 *)((unsigned long)(port)+_IO_BASE)) -#define inl(port) readl((u32 *)((port)+_IO_BASE)) +#define inb(port) readb((u8 *)((port))) +#define outb(val, port) writeb((val),(u8 *)((unsigned long)(port))) +#define inw(port) readw((u16 *)((port))) +#define outw(val, port) writew((val),(u16 *)((unsigned long)(port))) +#define inl(port) readl((u32 *)((port))) #define outl(val, port) writel((val),(u32 *)((unsigned long)(port))) #define inb_p(port) inb((port)) @@ -180,14 +181,13 @@ extern void outsl (unsigned long port, const void *src, unsigned long count); /* - * * Convert a physical pointer to a virtual kernel pointer for /dev/mem - * * access - * */ + * Convert a physical pointer to a virtual kernel pointer for /dev/mem access + */ #define xlate_dev_mem_ptr(p) __va(p) /* - * * Convert a virtual cached pointer to an uncached pointer - * */ + * Convert a virtual cached pointer to an uncached pointer + */ #define xlate_dev_kmem_ptr(p) p |