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Diffstat (limited to 'include/asm-xtensa/io.h')
| -rw-r--r-- | include/asm-xtensa/io.h | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/include/asm-xtensa/io.h b/include/asm-xtensa/io.h deleted file mode 100644 index c5c13985bbe..00000000000 --- a/include/asm-xtensa/io.h +++ /dev/null @@ -1,197 +0,0 @@ -/* - * linux/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 - * for more details. - * - * Copyright (C) 2001 - 2005 Tensilica Inc. - */ - -#ifndef _XTENSA_IO_H -#define _XTENSA_IO_H - -#ifdef __KERNEL__ -#include <linux/config.h> -#include <asm/byteorder.h> - -#include <linux/types.h> -#include <asm/fixmap.h> - -#define _IO_BASE 0 - - -/* - * swap functions to change byte order from little-endian to big-endian and - * vice versa. - */ - -static inline unsigned short _swapw (unsigned short v) -{ - return (v << 8) | (v >> 8); -} - -static inline unsigned int _swapl (unsigned int v) -{ - return (v << 24) | ((v & 0xff00) << 8) | ((v >> 8) & 0xff00) | (v >> 24); -} - -/* - * Change virtual addresses to physical addresses and vv. - * These are trivial on the 1:1 Linux/Xtensa mapping - */ - -static inline unsigned long virt_to_phys(volatile void * address) -{ - return PHYSADDR((unsigned long)address); -} - -static inline void * phys_to_virt(unsigned long address) -{ - return (void*) CACHED_ADDR(address); -} - -/* - * IO bus memory addresses are also 1:1 with the physical address - */ - -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); -} - -/* - * Change "struct page" to physical address. - */ - -static inline void *ioremap(unsigned long offset, unsigned long size) -{ - return (void *) CACHED_ADDR_IO(offset); -} - -static inline void *ioremap_nocache(unsigned long offset, unsigned long size) -{ - return (void *) BYPASS_ADDR_IO(offset); -} - -static inline void iounmap(void *addr) -{ -} - -/* - * Generic I/O - */ - -#define readb(addr) \ - ({ unsigned char __v = (*(volatile unsigned char *)(addr)); __v; }) -#define readw(addr) \ - ({ unsigned short __v = (*(volatile unsigned short *)(addr)); __v; }) -#define readl(addr) \ - ({ unsigned int __v = (*(volatile unsigned int *)(addr)); __v; }) -#define writeb(b, addr) (void)((*(volatile unsigned char *)(addr)) = (b)) -#define writew(b, addr) (void)((*(volatile unsigned short *)(addr)) = (b)) -#define writel(b, addr) (void)((*(volatile unsigned int *)(addr)) = (b)) - -static inline __u8 __raw_readb(const volatile void __iomem *addr) -{ - return *(__force volatile __u8 *)(addr); -} -static inline __u16 __raw_readw(const volatile void __iomem *addr) -{ - return *(__force volatile __u16 *)(addr); -} -static inline __u32 __raw_readl(const volatile void __iomem *addr) -{ - return *(__force volatile __u32 *)(addr); -} -static inline void __raw_writeb(__u8 b, volatile void __iomem *addr) -{ - *(__force volatile __u8 *)(addr) = b; -} -static inline void __raw_writew(__u16 b, volatile void __iomem *addr) -{ - *(__force volatile __u16 *)(addr) = b; -} -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 - * inb_p/inw_p/... - * 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 outl(val, port) writel((val),(u32 *)((unsigned long)(port))) - -#define inb_p(port) inb((port)) -#define outb_p(val, port) outb((val), (port)) -#define inw_p(port) inw((port)) -#define outw_p(val, port) outw((val), (port)) -#define inl_p(port) inl((port)) -#define outl_p(val, port) outl((val), (port)) - -extern void insb (unsigned long port, void *dst, unsigned long count); -extern void insw (unsigned long port, void *dst, unsigned long count); -extern void insl (unsigned long port, void *dst, unsigned long count); -extern void outsb (unsigned long port, const void *src, unsigned long count); -extern void outsw (unsigned long port, const void *src, unsigned long count); -extern void outsl (unsigned long port, const void *src, unsigned long count); - -#define IO_SPACE_LIMIT ~0 - -#define memset_io(a,b,c) memset((void *)(a),(b),(c)) -#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) -#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) - -/* At this point the Xtensa doesn't provide byte swap instructions */ - -#ifdef __XTENSA_EB__ -# define in_8(addr) (*(u8*)(addr)) -# define in_le16(addr) _swapw(*(u16*)(addr)) -# define in_le32(addr) _swapl(*(u32*)(addr)) -# define out_8(b, addr) *(u8*)(addr) = (b) -# define out_le16(b, addr) *(u16*)(addr) = _swapw(b) -# define out_le32(b, addr) *(u32*)(addr) = _swapl(b) -#elif defined(__XTENSA_EL__) -# define in_8(addr) (*(u8*)(addr)) -# define in_le16(addr) (*(u16*)(addr)) -# define in_le32(addr) (*(u32*)(addr)) -# define out_8(b, addr) *(u8*)(addr) = (b) -# define out_le16(b, addr) *(u16*)(addr) = (b) -# define out_le32(b, addr) *(u32*)(addr) = (b) -#else -# error processor byte order undefined! -#endif - - -/* - * * 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 - * */ -#define xlate_dev_kmem_ptr(p) p - - -#endif /* __KERNEL__ */ - -#endif /* _XTENSA_IO_H */ |