101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
#ifndef _ASM_CRIS_IO_H
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#define _ASM_CRIS_IO_H
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#include <asm/page.h> /* for __va, __pa */
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#include <asm/arch/io.h>
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/*
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* Change virtual addresses to physical addresses and vv.
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*/
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extern 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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extern 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 * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
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extern 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(void *addr);
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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 virt_to_bus virt_to_phys
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#define bus_to_virt phys_to_virt
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/*
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* readX/writeX() are used to access memory mapped devices. On some
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* architectures the memory mapped IO stuff needs to be accessed
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* differently. On the CRIS architecture, we just read/write the
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* memory location directly.
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*/
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#define readb(addr) (*(volatile unsigned char *) (addr))
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#define readw(addr) (*(volatile unsigned short *) (addr))
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#define readl(addr) (*(volatile unsigned int *) (addr))
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#define readb_relaxed(addr) readb(addr)
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#define readw_relaxed(addr) readw(addr)
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#define readl_relaxed(addr) readl(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 writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
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#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
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#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
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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 memset_io(a,b,c) memset((void *)(a),(b),(c))
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#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
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#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
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/*
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* Again, CRIS does not require mem IO specific function.
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*/
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#define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void *)(b),(c),(d))
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/* The following is junk needed for the arch-independent code but which
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* we never use in the CRIS port
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*/
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#define IO_SPACE_LIMIT 0xffff
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#define inb(x) (0)
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#define inw(x) (0)
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#define inl(x) (0)
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#define outb(x,y)
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#define outw(x,y)
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#define outl(x,y)
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#define insb(x,y,z)
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#define insw(x,y,z)
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#define insl(x,y,z)
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#define outsb(x,y,z)
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#define outsw(x,y,z)
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#define outsl(x,y,z)
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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
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