143 lines
4.1 KiB
C
143 lines
4.1 KiB
C
/*
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* include/asm-v850/io.h -- Misc I/O operations
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*
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* Copyright (C) 2001,02,03,04,05 NEC Electronics Corporation
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* Copyright (C) 2001,02,03,04,05 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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*/
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#ifndef __V850_IO_H__
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#define __V850_IO_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 readb_relaxed(a) readb(a)
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#define readw_relaxed(a) readw(a)
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#define readl_relaxed(a) readl(a)
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#define writeb(val, addr) \
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(void)((*(volatile unsigned char *) (addr)) = (val))
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#define writew(val, addr) \
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(void)((*(volatile unsigned short *) (addr)) = (val))
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#define writel(val, addr) \
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(void)((*(volatile unsigned int *) (addr)) = (val))
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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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#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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#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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static inline void 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 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 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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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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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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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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/* Some places try to pass in an loff_t for PHYSADDR (?!), so we cast it to
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long before casting it to a pointer to avoid compiler warnings. */
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#define ioremap(physaddr, size) ((void __iomem *)(unsigned long)(physaddr))
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#define iounmap(addr) ((void)0)
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#define ioremap_nocache(physaddr, size) ioremap (physaddr, size)
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#define ioremap_writethrough(physaddr, size) ioremap (physaddr, size)
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#define ioremap_fullcache(physaddr, size) ioremap (physaddr, size)
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#define ioread8(addr) readb (addr)
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#define ioread16(addr) readw (addr)
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#define ioread32(addr) readl (addr)
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#define iowrite8(val, addr) writeb (val, addr)
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#define iowrite16(val, addr) writew (val, addr)
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#define iowrite32(val, addr) writel (val, addr)
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#define mmiowb()
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#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
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#if 0
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/* This is really stupid; don't define it. */
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#define page_to_bus(page) page_to_phys (page)
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#endif
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/* Conversion between virtual and physical mappings. */
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#define phys_to_virt(addr) ((void *)__phys_to_virt (addr))
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#define virt_to_phys(addr) ((unsigned long)__virt_to_phys (addr))
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#define memcpy_fromio(dst, src, len) memcpy (dst, (void *)src, len)
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#define memcpy_toio(dst, src, len) memcpy ((void *)dst, src, len)
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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 /* __V850_IO_H__ */
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