mirror of
https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stable.git
synced 2025-11-04 07:44:51 +10:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
233 lines
6.1 KiB
C
233 lines
6.1 KiB
C
#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 * 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 */
|
|
|
|
/**
|
|
* 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 check_signature(void __iomem *io_addr,
|
|
const unsigned char *signature, int length)
|
|
{
|
|
int retval = 0;
|
|
#if 0
|
|
printk("check_signature\n");
|
|
do {
|
|
if (readb(io_addr) != *signature)
|
|
goto out;
|
|
io_addr++;
|
|
signature++;
|
|
length--;
|
|
} while (length);
|
|
retval = 1;
|
|
out:
|
|
#endif
|
|
return retval;
|
|
}
|
|
|
|
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 */
|