2 * Copyright (C) 2006 Atmel Corporation
4 * SPDX-License-Identifier: GPL-2.0+
6 #ifndef __ASM_AVR32_IO_H
7 #define __ASM_AVR32_IO_H
14 * Generic IO read/write. These perform native-endian accesses. Note
15 * that some architectures will want to re-define __raw_{read,write}w.
17 extern void __raw_writesb(unsigned int addr, const void *data, int bytelen);
18 extern void __raw_writesw(unsigned int addr, const void *data, int wordlen);
19 extern void __raw_writesl(unsigned int addr, const void *data, int longlen);
21 extern void __raw_readsb(unsigned int addr, void *data, int bytelen);
22 extern void __raw_readsw(unsigned int addr, void *data, int wordlen);
23 extern void __raw_readsl(unsigned int addr, void *data, int longlen);
25 #define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v))
26 #define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
27 #define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
29 #define __raw_readb(a) (*(volatile unsigned char *)(a))
30 #define __raw_readw(a) (*(volatile unsigned short *)(a))
31 #define __raw_readl(a) (*(volatile unsigned int *)(a))
33 /* As long as I/O is only performed in P4 (or possibly P3), we're safe */
34 #define writeb(v,a) __raw_writeb(v,a)
35 #define writew(v,a) __raw_writew(v,a)
36 #define writel(v,a) __raw_writel(v,a)
38 #define readb(a) __raw_readb(a)
39 #define readw(a) __raw_readw(a)
40 #define readl(a) __raw_readl(a)
43 * Bad read/write accesses...
45 extern void __readwrite_bug(const char *fn);
47 #define IO_SPACE_LIMIT 0xffffffff
50 * All I/O is memory mapped, so these macros doesn't make very much sense
52 #define outb(v,p) __raw_writeb(v, p)
53 #define outw(v,p) __raw_writew(cpu_to_le16(v),p)
54 #define outl(v,p) __raw_writel(cpu_to_le32(v),p)
56 #define inb(p) ({ unsigned int __v = __raw_readb(p); __v; })
57 #define inw(p) ({ unsigned int __v = __le16_to_cpu(__raw_readw(p)); __v; })
58 #define inl(p) ({ unsigned int __v = __le32_to_cpu(__raw_readl(p)); __v; })
60 #include <asm/arch/addrspace.h>
61 /* Provides virt_to_phys, phys_to_virt, cached, uncached, map_physmem */
63 #endif /* __KERNEL__ */
65 static inline void sync(void)
70 * Take down a mapping set up by map_physmem().
72 static inline void unmap_physmem(void *vaddr, unsigned long len)
77 #endif /* __ASM_AVR32_IO_H */