tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#ifndef _ASM_ARC_IO_H
10#define _ASM_ARC_IO_H
11
12#include <linux/types.h>
13#include <asm/byteorder.h>
14#include <asm/page.h>
15
16extern void __iomem *ioremap(unsigned long physaddr, unsigned long size);
17extern void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
18 unsigned long flags);
19extern void iounmap(const void __iomem *addr);
20
21#define ioremap_nocache(phy, sz) ioremap(phy, sz)
22#define ioremap_wc(phy, sz) ioremap(phy, sz)
23
24/* Change struct page to physical address */
25#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
26
27#define __raw_readb __raw_readb
28static inline u8 __raw_readb(const volatile void __iomem *addr)
29{
30 u8 b;
31
32 __asm__ __volatile__(
33 " ldb%U1 %0, %1 \n"
34 : "=r" (b)
35 : "m" (*(volatile u8 __force *)addr)
36 : "memory");
37
38 return b;
39}
40
41#define __raw_readw __raw_readw
42static inline u16 __raw_readw(const volatile void __iomem *addr)
43{
44 u16 s;
45
46 __asm__ __volatile__(
47 " ldw%U1 %0, %1 \n"
48 : "=r" (s)
49 : "m" (*(volatile u16 __force *)addr)
50 : "memory");
51
52 return s;
53}
54
55#define __raw_readl __raw_readl
56static inline u32 __raw_readl(const volatile void __iomem *addr)
57{
58 u32 w;
59
60 __asm__ __volatile__(
61 " ld%U1 %0, %1 \n"
62 : "=r" (w)
63 : "m" (*(volatile u32 __force *)addr)
64 : "memory");
65
66 return w;
67}
68
69#define __raw_writeb __raw_writeb
70static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
71{
72 __asm__ __volatile__(
73 " stb%U1 %0, %1 \n"
74 :
75 : "r" (b), "m" (*(volatile u8 __force *)addr)
76 : "memory");
77}
78
79#define __raw_writew __raw_writew
80static inline void __raw_writew(u16 s, volatile void __iomem *addr)
81{
82 __asm__ __volatile__(
83 " stw%U1 %0, %1 \n"
84 :
85 : "r" (s), "m" (*(volatile u16 __force *)addr)
86 : "memory");
87
88}
89
90#define __raw_writel __raw_writel
91static inline void __raw_writel(u32 w, volatile void __iomem *addr)
92{
93 __asm__ __volatile__(
94 " st%U1 %0, %1 \n"
95 :
96 : "r" (w), "m" (*(volatile u32 __force *)addr)
97 : "memory");
98
99}
100
101#define readb_relaxed readb
102#define readw_relaxed readw
103#define readl_relaxed readl
104
105#include <asm-generic/io.h>
106
107#endif /* _ASM_ARC_IO_H */