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/*
* 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) 0
#define readw(addr) 0
#define readl(addr) 0
#define writeb(v, addr)
#define writew(v, addr)
#define writel(v, 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);
#include <iotrace.h>
#endif
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