u-boot/arch/sandbox/include/asm/io.h
Simon Glass 80793db909 sandbox: Use the address in readl/writel() functions
At present these functions do not touch addr, which can raising warnings
about unused variables.

This fixes the following warnings:

sandbox_spl defconfig
drivers/core/regmap.c: In function ‘regmap_read’:
drivers/core/regmap.c:125:12: warning: unused variable ‘ptr’ [-Wunused-variable]
  uint32_t *ptr = map_physmem(map->base + offset, 4, MAP_NOCACHE);
            ^
drivers/core/regmap.c: In function ‘regmap_write’:
drivers/core/regmap.c:134:12: warning: unused variable ‘ptr’ [-Wunused-variable]
  uint32_t *ptr = map_physmem(map->base + offset, 4, MAP_NOCACHE);

Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: 3bfb8cb4 (dm: regmap: Implement simple regmap_read & regmap_write)
2016-10-11 10:17:08 -06:00

77 lines
1.9 KiB
C

/*
* Copyright (c) 2011 The Chromium OS Authors.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __SANDBOX_ASM_IO_H
#define __SANDBOX_ASM_IO_H
/*
* 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)
void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags);
/*
* Take down a mapping set up by map_physmem().
*/
void unmap_physmem(const void *vaddr, unsigned long flags);
/* For sandbox, we want addresses to point into our RAM buffer */
static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
{
return map_physmem(paddr, len, MAP_WRBACK);
}
/* Remove a previous mapping */
static inline void unmap_sysmem(const void *vaddr)
{
unmap_physmem(vaddr, MAP_WRBACK);
}
/* Map from a pointer to our RAM buffer */
phys_addr_t map_to_sysmem(const void *ptr);
/* Define nops for sandbox I/O access */
#define readb(addr) ((void)addr, 0)
#define readw(addr) ((void)addr, 0)
#define readl(addr) ((void)addr, 0)
#define writeb(v, addr) ((void)addr)
#define writew(v, addr) ((void)addr)
#define writel(v, addr) ((void)addr)
/* I/O access functions */
int inl(unsigned int addr);
int inw(unsigned int addr);
int inb(unsigned int addr);
void outl(unsigned int value, unsigned int addr);
void outw(unsigned int value, unsigned int addr);
void outb(unsigned int value, unsigned int addr);
static inline void _insw(volatile u16 *port, void *buf, int ns)
{
}
static inline void _outsw(volatile u16 *port, const void *buf, int ns)
{
}
#define insw(port, buf, ns) _insw((u16 *)port, buf, ns)
#define outsw(port, buf, ns) _outsw((u16 *)port, buf, ns)
/* For systemace.c */
#define out16(addr, val)
#define in16(addr) 0
#include <iotrace.h>
#include <asm/types.h>
#endif