164 lines
4.2 KiB
C
164 lines
4.2 KiB
C
/*
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* include/asm-microblaze/io.h -- Misc I/O operations
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*
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* Copyright (C) 2003 John Williams <jwilliams@itee.uq.edu.au>
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* Copyright (C) 2001,02 NEC Corporation
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* Copyright (C) 2001,02 Miles Bader <miles@gnu.org>
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*
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* Written by Miles Bader <miles@gnu.org>
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* Microblaze port by John Williams
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*/
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#ifndef __MICROBLAZE_IO_H__
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#define __MICROBLAZE_IO_H__
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#include <asm/types.h>
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#define IO_SPACE_LIMIT 0xFFFFFFFF
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#define readb(addr) \
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({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
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#define readw(addr) \
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({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
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#define readl(addr) \
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({ unsigned long __v = (*(volatile unsigned long *) (addr)); __v; })
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#define writeb(b, addr) \
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(void)((*(volatile unsigned char *) (addr)) = (b))
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#define writew(b, addr) \
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(void)((*(volatile unsigned short *) (addr)) = (b))
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#define writel(b, addr) \
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(void)((*(volatile unsigned int *) (addr)) = (b))
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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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#define inb(addr) readb (addr)
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#define inw(addr) readw (addr)
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#define inl(addr) readl (addr)
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#define outb(x, addr) ((void) writeb (x, addr))
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#define outw(x, addr) ((void) writew (x, addr))
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#define outl(x, addr) ((void) writel (x, addr))
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/* Some #definitions to keep strange Xilinx code happy */
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#define in_8(addr) readb (addr)
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#define in_be16(addr) readw (addr)
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#define in_be32(addr) readl (addr)
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#define out_8(addr,x ) outb (x,addr)
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#define out_be16(addr,x ) outw (x,addr)
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#define out_be32(addr,x ) outl (x,addr)
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#define inb_p(port) inb((port))
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#define outb_p(val, port) outb((val), (port))
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#define inw_p(port) inw((port))
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#define outw_p(val, port) outw((val), (port))
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#define inl_p(port) inl((port))
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#define outl_p(val, port) outl((val), (port))
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/* Some defines to keep the MTD flash drivers happy */
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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 __raw_writeb writeb
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#define __raw_writew writew
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#define __raw_writel writel
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static inline void io_insb (unsigned long port, void *dst, unsigned long count)
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{
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unsigned char *p = dst;
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while (count--)
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*p++ = inb (port);
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}
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static inline void io_insw (unsigned long port, void *dst, unsigned long count)
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{
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unsigned short *p = dst;
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while (count--)
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*p++ = inw (port);
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}
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static inline void io_insl (unsigned long port, void *dst, unsigned long count)
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{
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unsigned long *p = dst;
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while (count--)
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*p++ = inl (port);
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}
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static inline void
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io_outsb (unsigned long port, const void *src, unsigned long count)
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{
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const unsigned char *p = src;
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while (count--)
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outb (*p++, port);
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}
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static inline void
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io_outsw (unsigned long port, const void *src, unsigned long count)
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{
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const unsigned short *p = src;
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while (count--)
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outw (*p++, port);
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}
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static inline void
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io_outsl (unsigned long port, const void *src, unsigned long count)
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{
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const unsigned long *p = src;
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while (count--)
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outl (*p++, port);
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}
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#define outsb(a,b,l) io_outsb(a,b,l)
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#define outsw(a,b,l) io_outsw(a,b,l)
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#define outsl(a,b,l) io_outsl(a,b,l)
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#define insb(a,b,l) io_insb(a,b,l)
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#define insw(a,b,l) io_insw(a,b,l)
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#define insl(a,b,l) io_insl(a,b,l)
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#define iounmap(addr) ((void)0)
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#define ioremap(physaddr, size) (physaddr)
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#define ioremap_nocache(physaddr, size) (physaddr)
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#define ioremap_writethrough(physaddr, size) (physaddr)
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#define ioremap_fullcache(physaddr, size) (physaddr)
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static inline void sync(void)
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{
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}
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/*
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* Given a physical address and a length, return a virtual address
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* that can be used to access the memory range with the caching
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* properties specified by "flags".
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*/
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#define MAP_NOCACHE (0)
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#define MAP_WRCOMBINE (0)
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#define MAP_WRBACK (0)
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#define MAP_WRTHROUGH (0)
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static inline void *
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map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
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{
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return (void *)paddr;
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}
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/*
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* Take down a mapping set up by map_physmem().
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*/
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static inline void unmap_physmem(void *vaddr, unsigned long flags)
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{
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}
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static inline phys_addr_t virt_to_phys(void * vaddr)
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{
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return (phys_addr_t)(vaddr);
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}
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#endif /* __MICROBLAZE_IO_H__ */
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