+++ /dev/null
-/* MN10300 I/O port emulation and memory-mapped I/O
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-#ifndef _ASM_IO_H
-#define _ASM_IO_H
-
-#include <asm/page.h> /* I/O is all done through memory accesses */
-#include <asm/cpu-regs.h>
-#include <asm/cacheflush.h>
-
-#define mmiowb() do {} while (0)
-
-/*****************************************************************************/
-/*
- * readX/writeX() are used to access memory mapped devices. On some
- * architectures the memory mapped IO stuff needs to be accessed
- * differently. On the x86 architecture, we just read/write the
- * memory location directly.
- */
-static inline u8 readb(const volatile void __iomem *addr)
-{
- return *(const volatile u8 *) addr;
-}
-
-static inline u16 readw(const volatile void __iomem *addr)
-{
- return *(const volatile u16 *) addr;
-}
-
-static inline u32 readl(const volatile void __iomem *addr)
-{
- return *(const volatile u32 *) addr;
-}
-
-#define __raw_readb readb
-#define __raw_readw readw
-#define __raw_readl readl
-
-#define readb_relaxed readb
-#define readw_relaxed readw
-#define readl_relaxed readl
-
-static inline void writeb(u8 b, volatile void __iomem *addr)
-{
- *(volatile u8 *) addr = b;
-}
-
-static inline void writew(u16 b, volatile void __iomem *addr)
-{
- *(volatile u16 *) addr = b;
-}
-
-static inline void writel(u32 b, volatile void __iomem *addr)
-{
- *(volatile u32 *) addr = b;
-}
-
-#define __raw_writeb writeb
-#define __raw_writew writew
-#define __raw_writel writel
-
-/*****************************************************************************/
-/*
- * traditional input/output functions
- */
-static inline u8 inb_local(unsigned long addr)
-{
- return readb((volatile void __iomem *) addr);
-}
-
-static inline void outb_local(u8 b, unsigned long addr)
-{
- return writeb(b, (volatile void __iomem *) addr);
-}
-
-static inline u8 inb(unsigned long addr)
-{
- return readb((volatile void __iomem *) addr);
-}
-
-static inline u16 inw(unsigned long addr)
-{
- return readw((volatile void __iomem *) addr);
-}
-
-static inline u32 inl(unsigned long addr)
-{
- return readl((volatile void __iomem *) addr);
-}
-
-static inline void outb(u8 b, unsigned long addr)
-{
- return writeb(b, (volatile void __iomem *) addr);
-}
-
-static inline void outw(u16 b, unsigned long addr)
-{
- return writew(b, (volatile void __iomem *) addr);
-}
-
-static inline void outl(u32 b, unsigned long addr)
-{
- return writel(b, (volatile void __iomem *) addr);
-}
-
-#define inb_p(addr) inb(addr)
-#define inw_p(addr) inw(addr)
-#define inl_p(addr) inl(addr)
-#define outb_p(x, addr) outb((x), (addr))
-#define outw_p(x, addr) outw((x), (addr))
-#define outl_p(x, addr) outl((x), (addr))
-
-static inline void insb(unsigned long addr, void *buffer, int count)
-{
- if (count) {
- u8 *buf = buffer;
- do {
- u8 x = inb(addr);
- *buf++ = x;
- } while (--count);
- }
-}
-
-static inline void insw(unsigned long addr, void *buffer, int count)
-{
- if (count) {
- u16 *buf = buffer;
- do {
- u16 x = inw(addr);
- *buf++ = x;
- } while (--count);
- }
-}
-
-static inline void insl(unsigned long addr, void *buffer, int count)
-{
- if (count) {
- u32 *buf = buffer;
- do {
- u32 x = inl(addr);
- *buf++ = x;
- } while (--count);
- }
-}
-
-static inline void outsb(unsigned long addr, const void *buffer, int count)
-{
- if (count) {
- const u8 *buf = buffer;
- do {
- outb(*buf++, addr);
- } while (--count);
- }
-}
-
-static inline void outsw(unsigned long addr, const void *buffer, int count)
-{
- if (count) {
- const u16 *buf = buffer;
- do {
- outw(*buf++, addr);
- } while (--count);
- }
-}
-
-extern void __outsl(unsigned long addr, const void *buffer, int count);
-static inline void outsl(unsigned long addr, const void *buffer, int count)
-{
- if ((unsigned long) buffer & 0x3)
- return __outsl(addr, buffer, count);
-
- if (count) {
- const u32 *buf = buffer;
- do {
- outl(*buf++, addr);
- } while (--count);
- }
-}
-
-#define ioread8(addr) readb(addr)
-#define ioread16(addr) readw(addr)
-#define ioread32(addr) readl(addr)
-
-#define iowrite8(v, addr) writeb((v), (addr))
-#define iowrite16(v, addr) writew((v), (addr))
-#define iowrite32(v, addr) writel((v), (addr))
-
-#define ioread8_rep(p, dst, count) \
- insb((unsigned long) (p), (dst), (count))
-#define ioread16_rep(p, dst, count) \
- insw((unsigned long) (p), (dst), (count))
-#define ioread32_rep(p, dst, count) \
- insl((unsigned long) (p), (dst), (count))
-
-#define iowrite8_rep(p, src, count) \
- outsb((unsigned long) (p), (src), (count))
-#define iowrite16_rep(p, src, count) \
- outsw((unsigned long) (p), (src), (count))
-#define iowrite32_rep(p, src, count) \
- outsl((unsigned long) (p), (src), (count))
-
-
-#define IO_SPACE_LIMIT 0xffffffff
-
-#ifdef __KERNEL__
-
-#include <linux/vmalloc.h>
-#define __io_virt(x) ((void *) (x))
-
-/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
-struct pci_dev;
-extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
-static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
-{
-}
-
-/*
- * Change virtual addresses to physical addresses and vv.
- * These are pretty trivial
- */
-static inline unsigned long virt_to_phys(volatile void *address)
-{
- return __pa(address);
-}
-
-static inline void *phys_to_virt(unsigned long address)
-{
- return __va(address);
-}
-
-/*
- * Change "struct page" to physical address.
- */
-static inline void *__ioremap(unsigned long offset, unsigned long size,
- unsigned long flags)
-{
- return (void *) offset;
-}
-
-static inline void *ioremap(unsigned long offset, unsigned long size)
-{
- return (void *) offset;
-}
-
-/*
- * This one maps high address device memory and turns off caching for that
- * area. it's useful if some control registers are in such an area and write
- * combining or read caching is not desirable:
- */
-static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
-{
- return (void *) (offset | 0x20000000);
-}
-
-#define ioremap_wc ioremap_nocache
-
-static inline void iounmap(void *addr)
-{
-}
-
-static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
-{
- return (void __iomem *) port;
-}
-
-static inline void ioport_unmap(void __iomem *p)
-{
-}
-
-#define xlate_dev_kmem_ptr(p) ((void *) (p))
-#define xlate_dev_mem_ptr(p) ((void *) (p))
-
-/*
- * PCI bus iomem addresses must be in the region 0x80000000-0x9fffffff
- */
-static inline unsigned long virt_to_bus(volatile void *address)
-{
- return ((unsigned long) address) & ~0x20000000;
-}
-
-static inline void *bus_to_virt(unsigned long address)
-{
- return (void *) address;
-}
-
-#define page_to_bus page_to_phys
-
-#define memset_io(a, b, c) memset(__io_virt(a), (b), (c))
-#define memcpy_fromio(a, b, c) memcpy((a), __io_virt(b), (c))
-#define memcpy_toio(a, b, c) memcpy(__io_virt(a), (b), (c))
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_IO_H */
projects / ~andy / linux / blobdiff