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