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6b8baec4 LFT |
1 | /* |
2 | * Copyright (C) 2014 Altera Corporation | |
3 | * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch> | |
4 | * Copyright (C) 2004 Microtronix Datacom Ltd. | |
5 | * | |
6 | * This file is subject to the terms and conditions of the GNU General Public | |
7 | * License. See the file "COPYING" in the main directory of this archive | |
8 | * for more details. | |
9 | */ | |
10 | ||
11 | #ifndef _ASM_NIOS2_IO_H | |
12 | #define _ASM_NIOS2_IO_H | |
13 | ||
61810325 | 14 | #include <linux/types.h> |
6b8baec4 | 15 | #include <asm/pgtable-bits.h> |
6b8baec4 LFT |
16 | |
17 | /* PCI is not supported in nios2, set this to 0. */ | |
18 | #define IO_SPACE_LIMIT 0 | |
19 | ||
20 | #define readb_relaxed(addr) readb(addr) | |
21 | #define readw_relaxed(addr) readw(addr) | |
22 | #define readl_relaxed(addr) readl(addr) | |
23 | ||
24 | #define writeb_relaxed(x, addr) writeb(x, addr) | |
25 | #define writew_relaxed(x, addr) writew(x, addr) | |
26 | #define writel_relaxed(x, addr) writel(x, addr) | |
27 | ||
6b8baec4 LFT |
28 | extern void __iomem *__ioremap(unsigned long physaddr, unsigned long size, |
29 | unsigned long cacheflag); | |
30 | extern void __iounmap(void __iomem *addr); | |
31 | ||
32 | static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size) | |
33 | { | |
34 | return __ioremap(physaddr, size, 0); | |
35 | } | |
36 | ||
37 | static inline void __iomem *ioremap_nocache(unsigned long physaddr, | |
38 | unsigned long size) | |
39 | { | |
40 | return __ioremap(physaddr, size, 0); | |
41 | } | |
42 | ||
43 | static inline void iounmap(void __iomem *addr) | |
44 | { | |
45 | __iounmap(addr); | |
46 | } | |
47 | ||
76367a52 | 48 | #define ioremap_wc ioremap_nocache |
556269c1 | 49 | #define ioremap_wt ioremap_nocache |
76367a52 | 50 | |
6b8baec4 | 51 | /* Pages to physical address... */ |
568f6ba0 | 52 | #define page_to_phys(page) virt_to_phys(page_to_virt(page)) |
6b8baec4 LFT |
53 | |
54 | /* Macros used for converting between virtual and physical mappings. */ | |
568f6ba0 | 55 | #define phys_to_virt(vaddr) \ |
6b8baec4 LFT |
56 | ((void *)((unsigned long)(vaddr) | CONFIG_NIOS2_KERNEL_REGION_BASE)) |
57 | /* Clear top 3 bits */ | |
568f6ba0 | 58 | #define virt_to_phys(vaddr) \ |
6b8baec4 LFT |
59 | ((unsigned long)((unsigned long)(vaddr) & ~0xE0000000)) |
60 | ||
065a1134 LFT |
61 | #include <asm-generic/io.h> |
62 | ||
6b8baec4 | 63 | #endif /* _ASM_NIOS2_IO_H */ |