Viewing file:  io.h (5.4 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
#ifndef _ASM_M32R_IO_H
#define _ASM_M32R_IO_H
#include <linux/string.h>
#include <linux/compiler.h>
#include <asm/page.h> /* __va */
#ifdef __KERNEL__
#define IO_SPACE_LIMIT 0xFFFFFFFF
/**
* virt_to_phys - map virtual addresses to physical
* @address: address to remap
*
* The returned physical address is the physical (CPU) mapping for
* the memory address given. It is only valid to use this function on
* addresses directly mapped or allocated via kmalloc.
*
* This function does not give bus mappings for DMA transfers. In
* almost all conceivable cases a device driver should not be using
* this function
*/
static inline unsigned long virt_to_phys(volatile void * address)
{
return __pa(address);
}
/**
* phys_to_virt - map physical address to virtual
* @address: address to remap
*
* The returned virtual address is a current CPU mapping for
* the memory address given. It is only valid to use this function on
* addresses that have a kernel mapping
*
* This function does not handle bus mappings for DMA transfers. In
* almost all conceivable cases a device driver should not be using
* this function
*/
static inline void *phys_to_virt(unsigned long address)
{
return __va(address);
}
extern void __iomem *
__ioremap(unsigned long offset, unsigned long size, unsigned long flags);
/**
* ioremap - map bus memory into CPU space
* @offset: bus address of the memory
* @size: size of the resource to map
*
* ioremap performs a platform specific sequence of operations to
* make bus memory CPU accessible via the readb/readw/readl/writeb/
* writew/writel functions and the other mmio helpers. The returned
* address is not guaranteed to be usable directly as a virtual
* address.
*/
static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
{
return __ioremap(offset, size, 0);
}
extern void iounmap(volatile void __iomem *addr);
#define ioremap_nocache(off,size) ioremap(off,size)
/*
* IO bus memory addresses are also 1:1 with the physical address
*/
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
#define page_to_bus page_to_phys
#define virt_to_bus virt_to_phys
extern unsigned char _inb(unsigned long);
extern unsigned short _inw(unsigned long);
extern unsigned long _inl(unsigned long);
extern unsigned char _inb_p(unsigned long);
extern unsigned short _inw_p(unsigned long);
extern unsigned long _inl_p(unsigned long);
extern void _outb(unsigned char, unsigned long);
extern void _outw(unsigned short, unsigned long);
extern void _outl(unsigned long, unsigned long);
extern void _outb_p(unsigned char, unsigned long);
extern void _outw_p(unsigned short, unsigned long);
extern void _outl_p(unsigned long, unsigned long);
extern void _insb(unsigned int, void *, unsigned long);
extern void _insw(unsigned int, void *, unsigned long);
extern void _insl(unsigned int, void *, unsigned long);
extern void _outsb(unsigned int, const void *, unsigned long);
extern void _outsw(unsigned int, const void *, unsigned long);
extern void _outsl(unsigned int, const void *, unsigned long);
static inline unsigned char _readb(unsigned long addr)
{
return *(volatile unsigned char __force *)addr;
}
static inline unsigned short _readw(unsigned long addr)
{
return *(volatile unsigned short __force *)addr;
}
static inline unsigned long _readl(unsigned long addr)
{
return *(volatile unsigned long __force *)addr;
}
static inline void _writeb(unsigned char b, unsigned long addr)
{
*(volatile unsigned char __force *)addr = b;
}
static inline void _writew(unsigned short w, unsigned long addr)
{
*(volatile unsigned short __force *)addr = w;
}
static inline void _writel(unsigned long l, unsigned long addr)
{
*(volatile unsigned long __force *)addr = l;
}
#define inb _inb
#define inw _inw
#define inl _inl
#define outb _outb
#define outw _outw
#define outl _outl
#define inb_p _inb_p
#define inw_p _inw_p
#define inl_p _inl_p
#define outb_p _outb_p
#define outw_p _outw_p
#define outl_p _outl_p
#define insb _insb
#define insw _insw
#define insl _insl
#define outsb _outsb
#define outsw _outsw
#define outsl _outsl
#define readb(addr) _readb((unsigned long)(addr))
#define readw(addr) _readw((unsigned long)(addr))
#define readl(addr) _readl((unsigned long)(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
#define writeb(val, addr) _writeb((val), (unsigned long)(addr))
#define writew(val, addr) _writew((val), (unsigned long)(addr))
#define writel(val, addr) _writel((val), (unsigned long)(addr))
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
#define mmiowb()
#define flush_write_buffers() do { } while (0) /* M32R_FIXME */
static inline void
memset_io(volatile void __iomem *addr, unsigned char val, int count)
{
memset((void __force *) addr, val, count);
}
static inline void
memcpy_fromio(void *dst, volatile void __iomem *src, int count)
{
memcpy(dst, (void __force *) src, count);
}
static inline void
memcpy_toio(volatile void __iomem *dst, const void *src, int count)
{
memcpy((void __force *) dst, src, count);
}
/*
* 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 /* _ASM_M32R_IO_H */
|