233 lines
6.1 KiB
C
233 lines
6.1 KiB
C
#ifndef _ASM_M32R_IO_H
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#define _ASM_M32R_IO_H
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#include <linux/string.h>
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#include <linux/compiler.h>
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#include <asm/page.h> /* __va */
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#ifdef __KERNEL__
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#define IO_SPACE_LIMIT 0xFFFFFFFF
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/**
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* virt_to_phys - map virtual addresses to physical
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* @address: address to remap
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*
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* The returned physical address is the physical (CPU) mapping for
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* the memory address given. It is only valid to use this function on
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* addresses directly mapped or allocated via kmalloc.
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*
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* This function does not give bus mappings for DMA transfers. In
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* almost all conceivable cases a device driver should not be using
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* this function
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*/
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static inline unsigned long virt_to_phys(volatile void * address)
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{
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return __pa(address);
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}
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/**
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* phys_to_virt - map physical address to virtual
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* @address: address to remap
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*
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* The returned virtual address is a current CPU mapping for
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* the memory address given. It is only valid to use this function on
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* addresses that have a kernel mapping
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*
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* This function does not handle bus mappings for DMA transfers. In
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* almost all conceivable cases a device driver should not be using
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* this function
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*/
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static inline void *phys_to_virt(unsigned long address)
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{
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return __va(address);
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}
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extern void __iomem *
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__ioremap(unsigned long offset, unsigned long size, unsigned long flags);
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/**
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* ioremap - map bus memory into CPU space
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* @offset: bus address of the memory
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* @size: size of the resource to map
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*
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* ioremap performs a platform specific sequence of operations to
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* make bus memory CPU accessible via the readb/readw/readl/writeb/
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* writew/writel functions and the other mmio helpers. The returned
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* address is not guaranteed to be usable directly as a virtual
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* address.
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*/
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static inline void * ioremap(unsigned long offset, unsigned long size)
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{
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return __ioremap(offset, size, 0);
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}
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extern void iounmap(volatile void __iomem *addr);
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#define ioremap_nocache(off,size) ioremap(off,size)
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/*
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* IO bus memory addresses are also 1:1 with the physical address
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*/
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#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
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#define page_to_bus page_to_phys
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#define virt_to_bus virt_to_phys
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extern unsigned char _inb(unsigned long);
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extern unsigned short _inw(unsigned long);
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extern unsigned long _inl(unsigned long);
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extern unsigned char _inb_p(unsigned long);
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extern unsigned short _inw_p(unsigned long);
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extern unsigned long _inl_p(unsigned long);
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extern void _outb(unsigned char, unsigned long);
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extern void _outw(unsigned short, unsigned long);
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extern void _outl(unsigned long, unsigned long);
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extern void _outb_p(unsigned char, unsigned long);
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extern void _outw_p(unsigned short, unsigned long);
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extern void _outl_p(unsigned long, unsigned long);
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extern void _insb(unsigned int, void *, unsigned long);
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extern void _insw(unsigned int, void *, unsigned long);
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extern void _insl(unsigned int, void *, unsigned long);
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extern void _outsb(unsigned int, const void *, unsigned long);
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extern void _outsw(unsigned int, const void *, unsigned long);
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extern void _outsl(unsigned int, const void *, unsigned long);
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static inline unsigned char _readb(unsigned long addr)
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{
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return *(volatile unsigned char __force *)addr;
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}
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static inline unsigned short _readw(unsigned long addr)
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{
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return *(volatile unsigned short __force *)addr;
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}
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static inline unsigned long _readl(unsigned long addr)
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{
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return *(volatile unsigned long __force *)addr;
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}
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static inline void _writeb(unsigned char b, unsigned long addr)
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{
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*(volatile unsigned char __force *)addr = b;
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}
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static inline void _writew(unsigned short w, unsigned long addr)
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{
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*(volatile unsigned short __force *)addr = w;
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}
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static inline void _writel(unsigned long l, unsigned long addr)
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{
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*(volatile unsigned long __force *)addr = l;
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}
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#define inb _inb
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#define inw _inw
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#define inl _inl
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#define outb _outb
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#define outw _outw
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#define outl _outl
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#define inb_p _inb_p
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#define inw_p _inw_p
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#define inl_p _inl_p
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#define outb_p _outb_p
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#define outw_p _outw_p
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#define outl_p _outl_p
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#define insb _insb
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#define insw _insw
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#define insl _insl
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#define outsb _outsb
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#define outsw _outsw
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#define outsl _outsl
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#define readb(addr) _readb((unsigned long)(addr))
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#define readw(addr) _readw((unsigned long)(addr))
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#define readl(addr) _readl((unsigned long)(addr))
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#define __raw_readb readb
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#define __raw_readw readw
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#define __raw_readl readl
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#define readb_relaxed readb
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#define readw_relaxed readw
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#define readl_relaxed readl
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#define writeb(val, addr) _writeb((val), (unsigned long)(addr))
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#define writew(val, addr) _writew((val), (unsigned long)(addr))
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#define writel(val, addr) _writel((val), (unsigned long)(addr))
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#define __raw_writeb writeb
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#define __raw_writew writew
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#define __raw_writel writel
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#define mmiowb()
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#define flush_write_buffers() do { } while (0) /* M32R_FIXME */
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/**
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* check_signature - find BIOS signatures
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* @io_addr: mmio address to check
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* @signature: signature block
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* @length: length of signature
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*
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* Perform a signature comparison with the ISA mmio address io_addr.
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* Returns 1 on a match.
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*
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* This function is deprecated. New drivers should use ioremap and
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* check_signature.
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*/
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static inline int check_signature(void __iomem *io_addr,
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const unsigned char *signature, int length)
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{
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int retval = 0;
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#if 0
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printk("check_signature\n");
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do {
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if (readb(io_addr) != *signature)
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goto out;
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io_addr++;
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signature++;
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length--;
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} while (length);
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retval = 1;
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out:
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#endif
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return retval;
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}
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static inline void
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memset_io(volatile void __iomem *addr, unsigned char val, int count)
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{
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memset((void __force *) addr, val, count);
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}
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static inline void
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memcpy_fromio(void *dst, volatile void __iomem *src, int count)
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{
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memcpy(dst, (void __force *) src, count);
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}
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static inline void
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memcpy_toio(volatile void __iomem *dst, const void *src, int count)
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{
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memcpy((void __force *) dst, src, count);
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}
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/*
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* Convert a physical pointer to a virtual kernel pointer for /dev/mem
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* access
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*/
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#define xlate_dev_mem_ptr(p) __va(p)
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/*
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* Convert a virtual cached pointer to an uncached pointer
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*/
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#define xlate_dev_kmem_ptr(p) p
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#endif /* __KERNEL__ */
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#endif /* _ASM_M32R_IO_H */
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