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/*
* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
* Scott McNutt <smcnutt@psyent.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __ASM_NIOS2_IO_H_
#define __ASM_NIOS2_IO_H_
static inline void sync(void)
{
__asm__ __volatile__ ("sync" : : : "memory");
}
/*
* Given a physical address and a length, return a virtual address
* that can be used to access the memory range with the caching
* properties specified by "flags".
*/
#define MAP_NOCACHE (0)
#define MAP_WRCOMBINE (0)
#define MAP_WRBACK (0)
#define MAP_WRTHROUGH (0)
static inline void *
map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
return (void *)paddr;
}
/*
* Take down a mapping set up by map_physmem().
*/
static inline void unmap_physmem(void *vaddr, unsigned long flags)
{
}
static inline phys_addr_t virt_to_phys(void * vaddr)
{
return (phys_addr_t)(vaddr);
}
extern unsigned char inb (unsigned char *port);
extern unsigned short inw (unsigned short *port);
extern unsigned inl (unsigned port);
#define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v))
#define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
#define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
#define __raw_readb(a) (*(volatile unsigned char *)(a))
#define __raw_readw(a) (*(volatile unsigned short *)(a))
#define __raw_readl(a) (*(volatile unsigned int *)(a))
#define readb(addr)\
({unsigned char val;\
asm volatile( "ldbio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
#define readw(addr)\
({unsigned short val;\
asm volatile( "ldhio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
#define readl(addr)\
({unsigned long val;\
asm volatile( "ldwio %0, 0(%1)" :"=r"(val) : "r" (addr)); val;})
#define writeb(addr,val)\
asm volatile ("stbio %1, 0(%0)" : : "r" (addr), "r" (val))
#define writew(addr,val)\
asm volatile ("sthio %1, 0(%0)" : : "r" (addr), "r" (val))
#define writel(addr,val)\
asm volatile ("stwio %1, 0(%0)" : : "r" (addr), "r" (val))
#define inb(addr) readb(addr)
#define inw(addr) readw(addr)
#define inl(addr) readl(addr)
#define outb(addr,val) writeb(addr,val)
#define outw(addr,val) writew(addr,val)
#define outl(addr,val) writel(addr,val)
static inline void insb (unsigned long port, void *dst, unsigned long count)
{
unsigned char *p = dst;
while (count--) *p++ = inb (port);
}
static inline void insw (unsigned long port, void *dst, unsigned long count)
{
unsigned short *p = dst;
while (count--) *p++ = inw (port);
}
static inline void insl (unsigned long port, void *dst, unsigned long count)
{
unsigned long *p = dst;
while (count--) *p++ = inl (port);
}
static inline void outsb (unsigned long port, const void *src, unsigned long count)
{
const unsigned char *p = src;
while (count--) outb (*p++, port);
}
static inline void outsw (unsigned long port, const void *src, unsigned long count)
{
const unsigned short *p = src;
while (count--) outw (*p++, port);
}
static inline void outsl (unsigned long port, const void *src, unsigned long count)
{
const unsigned long *p = src;
while (count--) outl (*p++, port);
}
#endif /* __ASM_NIOS2_IO_H_ */
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