1 /*
2 * SPDX-License-Identifier: GPL-2.0+
3 */
4
5 #ifndef _LINUX_IO_H
6 #define _LINUX_IO_H
7
8 #include <linux/compiler.h>
9 #include <linux/types.h>
10 #include <asm/io.h>
11
ioread8(const volatile void __iomem * addr)12 static inline u8 ioread8(const volatile void __iomem *addr)
13 {
14 return readb(addr);
15 }
16
ioread16(const volatile void __iomem * addr)17 static inline u16 ioread16(const volatile void __iomem *addr)
18 {
19 return readw(addr);
20 }
21
ioread32(const volatile void __iomem * addr)22 static inline u32 ioread32(const volatile void __iomem *addr)
23 {
24 return readl(addr);
25 }
26
27 #ifdef CONFIG_64BIT
ioread64(const volatile void __iomem * addr)28 static inline u64 ioread64(const volatile void __iomem *addr)
29 {
30 return readq(addr);
31 }
32 #endif /* CONFIG_64BIT */
33
iowrite8(u8 value,volatile void __iomem * addr)34 static inline void iowrite8(u8 value, volatile void __iomem *addr)
35 {
36 writeb(value, addr);
37 }
38
iowrite16(u16 value,volatile void __iomem * addr)39 static inline void iowrite16(u16 value, volatile void __iomem *addr)
40 {
41 writew(value, addr);
42 }
43
iowrite32(u32 value,volatile void __iomem * addr)44 static inline void iowrite32(u32 value, volatile void __iomem *addr)
45 {
46 writel(value, addr);
47 }
48
49 #ifdef CONFIG_64BIT
iowrite64(u64 value,volatile void __iomem * addr)50 static inline void iowrite64(u64 value, volatile void __iomem *addr)
51 {
52 writeq(value, addr);
53 }
54 #endif /* CONFIG_64BIT */
55
56 #ifndef CONFIG_HAVE_ARCH_IOREMAP
ioremap(resource_size_t offset,resource_size_t size)57 static inline void __iomem *ioremap(resource_size_t offset,
58 resource_size_t size)
59 {
60 return (void __iomem *)(unsigned long)offset;
61 }
62
iounmap(void __iomem * addr)63 static inline void iounmap(void __iomem *addr)
64 {
65 }
66
67 #define devm_ioremap(dev, offset, size) ioremap(offset, size)
68 #endif
69
70 #endif /* _LINUX_IO_H */
71