mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
9569c40668
Add the required header information, device tree nodes and I/O accessor functions to support PCI on sandbox. All devices are emulated by drivers which can be added as required for testing or development. Signed-off-by: Simon Glass <sjg@chromium.org>
61 lines
1.5 KiB
C
61 lines
1.5 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) 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
|