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
16 #define PCI_IOBASE ((void __iomem *)0)
17
18 extern void __iomem *ioremap(unsigned long physaddr, unsigned long size);
19 extern void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
20 unsigned long flags);
21 extern void iounmap(const void __iomem *addr);
22
23 #define ioremap_nocache(phy, sz) ioremap(phy, sz)
24 #define ioremap_wc(phy, sz) ioremap(phy, sz)
25
26 /* Change struct page to physical address */
27 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
28
29 #define __raw_readb __raw_readb
30 static inline u8 __raw_readb(const volatile void __iomem *addr)
31 {
32 u8 b;
33
34 __asm__ __volatile__(
35 " ldb%U1 %0, %1 \n"
36 : "=r" (b)
37 : "m" (*(volatile u8 __force *)addr)
38 : "memory");
39
40 return b;
41 }
42
43 #define __raw_readw __raw_readw
44 static inline u16 __raw_readw(const volatile void __iomem *addr)
45 {
46 u16 s;
47
48 __asm__ __volatile__(
49 " ldw%U1 %0, %1 \n"
50 : "=r" (s)
51 : "m" (*(volatile u16 __force *)addr)
52 : "memory");
53
54 return s;
55 }
56
57 #define __raw_readl __raw_readl
58 static inline u32 __raw_readl(const volatile void __iomem *addr)
59 {
60 u32 w;
61
62 __asm__ __volatile__(
63 " ld%U1 %0, %1 \n"
64 : "=r" (w)
65 : "m" (*(volatile u32 __force *)addr)
66 : "memory");
67
68 return w;
69 }
70
71 #define __raw_writeb __raw_writeb
72 static inline void __raw_writeb(u8 b, volatile void __iomem *addr)
73 {
74 __asm__ __volatile__(
75 " stb%U1 %0, %1 \n"
76 :
77 : "r" (b), "m" (*(volatile u8 __force *)addr)
78 : "memory");
79 }
80
81 #define __raw_writew __raw_writew
82 static inline void __raw_writew(u16 s, volatile void __iomem *addr)
83 {
84 __asm__ __volatile__(
85 " stw%U1 %0, %1 \n"
86 :
87 : "r" (s), "m" (*(volatile u16 __force *)addr)
88 : "memory");
89
90 }
91
92 #define __raw_writel __raw_writel
93 static inline void __raw_writel(u32 w, volatile void __iomem *addr)
94 {
95 __asm__ __volatile__(
96 " st%U1 %0, %1 \n"
97 :
98 : "r" (w), "m" (*(volatile u32 __force *)addr)
99 : "memory");
100
101 }
102
103 #include <asm-generic/io.h>
104
105 #endif /* _ASM_ARC_IO_H */
106
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