1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _H8300_IO_H
3 #define _H8300_IO_H
4
5 #ifdef __KERNEL__
6
7 #include <linux/types.h>
8
9 /* H8/300 internal I/O functions */
10
11 #define __raw_readb __raw_readb
__raw_readb(const volatile void __iomem * addr)12 static inline u8 __raw_readb(const volatile void __iomem *addr)
13 {
14 return *(volatile u8 *)addr;
15 }
16
17 #define __raw_readw __raw_readw
__raw_readw(const volatile void __iomem * addr)18 static inline u16 __raw_readw(const volatile void __iomem *addr)
19 {
20 return *(volatile u16 *)addr;
21 }
22
23 #define __raw_readl __raw_readl
__raw_readl(const volatile void __iomem * addr)24 static inline u32 __raw_readl(const volatile void __iomem *addr)
25 {
26 return *(volatile u32 *)addr;
27 }
28
29 #define __raw_writeb __raw_writeb
__raw_writeb(u8 b,const volatile void __iomem * addr)30 static inline void __raw_writeb(u8 b, const volatile void __iomem *addr)
31 {
32 *(volatile u8 *)addr = b;
33 }
34
35 #define __raw_writew __raw_writew
__raw_writew(u16 b,const volatile void __iomem * addr)36 static inline void __raw_writew(u16 b, const volatile void __iomem *addr)
37 {
38 *(volatile u16 *)addr = b;
39 }
40
41 #define __raw_writel __raw_writel
__raw_writel(u32 b,const volatile void __iomem * addr)42 static inline void __raw_writel(u32 b, const volatile void __iomem *addr)
43 {
44 *(volatile u32 *)addr = b;
45 }
46
ctrl_bclr(int b,void __iomem * addr)47 static inline void ctrl_bclr(int b, void __iomem *addr)
48 {
49 if (__builtin_constant_p(b))
50 __asm__("bclr %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
51 else
52 __asm__("bclr %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
53 }
54
ctrl_bset(int b,void __iomem * addr)55 static inline void ctrl_bset(int b, void __iomem *addr)
56 {
57 if (__builtin_constant_p(b))
58 __asm__("bset %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
59 else
60 __asm__("bset %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
61 }
62
63 #include <asm-generic/io.h>
64
65 #endif /* __KERNEL__ */
66
67 #endif /* _H8300_IO_H */
68