blob: f81a0975cbea0efb88db7b8a123072f125f80e10 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
/*
* include/asm-s390/io.h
*
* S390 version
* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
*
* Derived from "include/asm-i386/io.h"
*/
#ifndef _S390_IO_H
#define _S390_IO_H
#include <asm/page.h>
#define IO_SPACE_LIMIT 0xffffffff
/*
* Change virtual addresses to physical addresses and vv.
* These are pretty trivial
*/
static inline unsigned long virt_to_phys(volatile void * address)
{
unsigned long real_address;
asm volatile(
" lra %0,0(%1)\n"
" jz 0f\n"
" la %0,0\n"
"0:"
: "=a" (real_address) : "a" (address) : "cc");
return real_address;
}
static inline void * phys_to_virt(unsigned long address)
{
return (void *) address;
}
void *xlate_dev_mem_ptr(unsigned long phys);
void unxlate_dev_mem_ptr(unsigned long phys, void *addr);
/*
* Convert a virtual cached pointer to an uncached pointer
*/
#define xlate_dev_kmem_ptr(p) p
#endif
|
