mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-28 22:03:44 +09:00
37e24499b9
Add ioremap() to map physical address to uncached virtual address. We need this to convert the reg address from the device tree. The order of headers inclusion in interrupts.c is changed because common.h will include board header that contains IO_REGION_BASE. In the future, the IO_REGION_BASE should be decided from the device tree. tree Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Acked-by: Marek Vasut <marex@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org>
120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/*
|
|
* (C) Copyright 2004, Psyent Corporation <www.psyent.com>
|
|
* Scott McNutt <smcnutt@psyent.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#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);
|
|
}
|
|
|
|
static inline void *ioremap(unsigned long physaddr, unsigned long size)
|
|
{
|
|
return (void *)(IO_REGION_BASE | physaddr);
|
|
}
|
|
|
|
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(val,addr)\
|
|
asm volatile ("stbio %0, 0(%1)" : : "r" (val), "r" (addr))
|
|
#define writew(val,addr)\
|
|
asm volatile ("sthio %0, 0(%1)" : : "r" (val), "r" (addr))
|
|
#define writel(val,addr)\
|
|
asm volatile ("stwio %0, 0(%1)" : : "r" (val), "r" (addr))
|
|
|
|
#define inb(addr) readb(addr)
|
|
#define inw(addr) readw(addr)
|
|
#define inl(addr) readl(addr)
|
|
#define outb(val, addr) writeb(val,addr)
|
|
#define outw(val, addr) writew(val,addr)
|
|
#define outl(val, addr) writel(val,addr)
|
|
|
|
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_ */
|