1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _ASM_UM_IO_H
 3#define _ASM_UM_IO_H
 4#include <linux/types.h>
 5
 6/* get emulated iomem (if desired) */
 7#include <asm-generic/logic_io.h>
 8
 9#ifndef ioremap
10#define ioremap ioremap
11static inline void __iomem *ioremap(phys_addr_t offset, size_t size)
 
 
 
 
 
 
 
12{
13	return NULL;
14}
15#endif /* ioremap */
16
17#ifndef iounmap
18#define iounmap iounmap
19static inline void iounmap(void __iomem *addr)
20{
 
21}
22#endif /* iounmap */
23
24#include <asm-generic/io.h>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
25
26#endif

 1#ifndef __UM_IO_H
 2#define __UM_IO_H
 
 
 3
 4#include "asm/page.h"
 
 5
 6#define IO_SPACE_LIMIT 0xdeadbeef /* Sure hope nothing uses this */
 7
 8static inline int inb(unsigned long i) { return(0); }
 9static inline void outb(char c, unsigned long i) { }
10
11/*
12 * Change virtual addresses to physical addresses and vv.
13 * These are pretty trivial
14 */
15static inline unsigned long virt_to_phys(volatile void * address)
16{
17	return __pa((void *) address);
18}
 
19
20static inline void * phys_to_virt(unsigned long address)
 
 
21{
22	return __va(address);
23}
 
24
25/*
26 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
27 * access
28 */
29#define xlate_dev_mem_ptr(p)	__va(p)
30
31/*
32 * Convert a virtual cached pointer to an uncached pointer
33 */
34#define xlate_dev_kmem_ptr(p)	p
35
36static inline void writeb(unsigned char b, volatile void __iomem *addr)
37{
38	*(volatile unsigned char __force *) addr = b;
39}
40static inline void writew(unsigned short b, volatile void __iomem *addr)
41{
42	*(volatile unsigned short __force *) addr = b;
43}
44static inline void writel(unsigned int b, volatile void __iomem *addr)
45{
46	*(volatile unsigned int __force *) addr = b;
47}
48static inline void writeq(unsigned int b, volatile void __iomem *addr)
49{
50	*(volatile unsigned long long __force *) addr = b;
51}
52#define __raw_writeb writeb
53#define __raw_writew writew
54#define __raw_writel writel
55#define __raw_writeq writeq
56
57#endif