File: [Development] / linux-2.6-xfs / include / asm-m32r / io.h (download)
Revision 1.1, Fri Oct 1 15:10:15 2004 UTC (13 years ago) by nathans.longdrop.melbourne.sgi.com
Branch: MAIN
Upgrade kernel to 2.6.9-rc3 and kdb to 4.4
Merge of 2.6.x-xfs-melb:linux:19628a by kenmcd.
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#ifndef _ASM_M32R_IO_H
#define _ASM_M32R_IO_H
/* $Id: io.h,v 1.1 2004/10/01 15:10:15 nathans.longdrop.melbourne.sgi.com Exp $ */
#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 * __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 * ioremap(unsigned long offset, unsigned long size)
{
return __ioremap(offset, size, 0);
}
extern void iounmap(void *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 *)addr;
}
static inline unsigned short _readw(unsigned long addr)
{
return *(volatile unsigned short *)addr;
}
static inline unsigned long _readl(unsigned long addr)
{
return *(volatile unsigned long *)addr;
}
static inline void _writeb(unsigned char b, unsigned long addr)
{
*(volatile unsigned char *)addr = b;
}
static inline void _writew(unsigned short w, unsigned long addr)
{
*(volatile unsigned short *)addr = w;
}
static inline void _writel(unsigned long l, unsigned long addr)
{
*(volatile unsigned long *)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 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 flush_write_buffers() do { } while (0) /* M32R_FIXME */
/**
* isa_check_signature - find BIOS signatures
* @io_addr: mmio address to check
* @signature: signature block
* @length: length of signature
*
* Perform a signature comparison with the ISA mmio address io_addr.
* Returns 1 on a match.
*
* This function is deprecated. New drivers should use ioremap and
* check_signature.
*/
static inline int isa_check_signature(unsigned long io_addr,
const unsigned char *signature, int length)
{
int retval = 0;
#if 0
printk("isa_check_signature\n");
do {
if (isa_readb(io_addr) != *signature)
goto out;
io_addr++;
signature++;
length--;
} while (length);
retval = 1;
out:
#endif
return retval;
}
#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))
#endif /* __KERNEL__ */
#endif /* _ASM_M32R_IO_H */