mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
128 lines
3.9 KiB
C
128 lines
3.9 KiB
C
/*
|
|
* Copyright (C) 2006 Atmel Corporation
|
|
*
|
|
* 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_AVR32_IO_H
|
|
#define __ASM_AVR32_IO_H
|
|
|
|
#include <asm/types.h>
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
/*
|
|
* Generic IO read/write. These perform native-endian accesses. Note
|
|
* that some architectures will want to re-define __raw_{read,write}w.
|
|
*/
|
|
extern void __raw_writesb(unsigned int addr, const void *data, int bytelen);
|
|
extern void __raw_writesw(unsigned int addr, const void *data, int wordlen);
|
|
extern void __raw_writesl(unsigned int addr, const void *data, int longlen);
|
|
|
|
extern void __raw_readsb(unsigned int addr, void *data, int bytelen);
|
|
extern void __raw_readsw(unsigned int addr, void *data, int wordlen);
|
|
extern void __raw_readsl(unsigned int addr, void *data, int longlen);
|
|
|
|
#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))
|
|
|
|
/* As long as I/O is only performed in P4 (or possibly P3), we're safe */
|
|
#define writeb(v,a) __raw_writeb(v,a)
|
|
#define writew(v,a) __raw_writew(v,a)
|
|
#define writel(v,a) __raw_writel(v,a)
|
|
|
|
#define readb(a) __raw_readb(a)
|
|
#define readw(a) __raw_readw(a)
|
|
#define readl(a) __raw_readl(a)
|
|
|
|
/*
|
|
* Bad read/write accesses...
|
|
*/
|
|
extern void __readwrite_bug(const char *fn);
|
|
|
|
#define IO_SPACE_LIMIT 0xffffffff
|
|
|
|
/*
|
|
* All I/O is memory mapped, so these macros doesn't make very much sense
|
|
*/
|
|
#define outb(v,p) __raw_writeb(v, p)
|
|
#define outw(v,p) __raw_writew(cpu_to_le16(v),p)
|
|
#define outl(v,p) __raw_writel(cpu_to_le32(v),p)
|
|
|
|
#define inb(p) ({ unsigned int __v = __raw_readb(p); __v; })
|
|
#define inw(p) ({ unsigned int __v = __le16_to_cpu(__raw_readw(p)); __v; })
|
|
#define inl(p) ({ unsigned int __v = __le32_to_cpu(__raw_readl(p)); __v; })
|
|
|
|
#include <asm/addrspace.h>
|
|
|
|
/* virt_to_phys will only work when address is in P1 or P2 */
|
|
static __inline__ unsigned long virt_to_phys(volatile void *address)
|
|
{
|
|
return PHYSADDR(address);
|
|
}
|
|
|
|
static __inline__ void * phys_to_virt(unsigned long address)
|
|
{
|
|
return (void *)P1SEGADDR(address);
|
|
}
|
|
|
|
#define cached(addr) ((void *)P1SEGADDR(addr))
|
|
#define uncached(addr) ((void *)P2SEGADDR(addr))
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
static inline void sync(void)
|
|
{
|
|
}
|
|
|
|
/*
|
|
* 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".
|
|
*
|
|
* This implementation works for memory below 512MiB (flash, etc.) as
|
|
* well as above 3.5GiB (internal peripherals.)
|
|
*/
|
|
#define MAP_NOCACHE (0)
|
|
#define MAP_WRCOMBINE (1 << 7)
|
|
#define MAP_WRBACK (MAP_WRCOMBINE | (1 << 9))
|
|
#define MAP_WRTHROUGH (MAP_WRBACK | (1 << 0))
|
|
|
|
static inline void *
|
|
map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
|
|
{
|
|
if (flags == MAP_WRBACK)
|
|
return (void *)P1SEGADDR(paddr);
|
|
else
|
|
return (void *)P2SEGADDR(paddr);
|
|
}
|
|
|
|
/*
|
|
* Take down a mapping set up by map_physmem().
|
|
*/
|
|
static inline void unmap_physmem(void *vaddr, unsigned long len)
|
|
{
|
|
|
|
}
|
|
|
|
#endif /* __ASM_AVR32_IO_H */
|