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1da177e4 LT |
1 | #ifndef _ASM_CRIS_IO_H |
2 | #define _ASM_CRIS_IO_H | |
3 | ||
4 | #include <asm/page.h> /* for __va, __pa */ | |
5 | #include <asm/arch/io.h> | |
6 | ||
7 | /* | |
8 | * Change virtual addresses to physical addresses and vv. | |
9 | */ | |
10 | ||
11 | extern inline unsigned long virt_to_phys(volatile void * address) | |
12 | { | |
13 | return __pa(address); | |
14 | } | |
15 | ||
16 | extern inline void * phys_to_virt(unsigned long address) | |
17 | { | |
18 | return __va(address); | |
19 | } | |
20 | ||
21 | extern void * __ioremap(unsigned long offset, unsigned long size, unsigned long flags); | |
22 | ||
23 | extern inline void * ioremap (unsigned long offset, unsigned long size) | |
24 | { | |
25 | return __ioremap(offset, size, 0); | |
26 | } | |
27 | ||
28 | extern void iounmap(void *addr); | |
29 | ||
30 | /* | |
31 | * IO bus memory addresses are also 1:1 with the physical address | |
32 | */ | |
33 | #define virt_to_bus virt_to_phys | |
34 | #define bus_to_virt phys_to_virt | |
35 | ||
36 | /* | |
37 | * readX/writeX() are used to access memory mapped devices. On some | |
38 | * architectures the memory mapped IO stuff needs to be accessed | |
39 | * differently. On the CRIS architecture, we just read/write the | |
40 | * memory location directly. | |
41 | */ | |
42 | #define readb(addr) (*(volatile unsigned char *) (addr)) | |
43 | #define readw(addr) (*(volatile unsigned short *) (addr)) | |
44 | #define readl(addr) (*(volatile unsigned int *) (addr)) | |
45 | #define readb_relaxed(addr) readb(addr) | |
46 | #define readw_relaxed(addr) readw(addr) | |
47 | #define readl_relaxed(addr) readl(addr) | |
48 | #define __raw_readb readb | |
49 | #define __raw_readw readw | |
50 | #define __raw_readl readl | |
51 | ||
52 | #define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b)) | |
53 | #define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b)) | |
54 | #define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b)) | |
55 | #define __raw_writeb writeb | |
56 | #define __raw_writew writew | |
57 | #define __raw_writel writel | |
58 | ||
59 | #define mmiowb() | |
60 | ||
61 | #define memset_io(a,b,c) memset((void *)(a),(b),(c)) | |
62 | #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) | |
63 | #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) | |
64 | ||
65 | /* | |
66 | * Again, CRIS does not require mem IO specific function. | |
67 | */ | |
68 | ||
69 | #define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void *)(b),(c),(d)) | |
70 | ||
71 | /* The following is junk needed for the arch-independent code but which | |
72 | * we never use in the CRIS port | |
73 | */ | |
74 | ||
75 | #define IO_SPACE_LIMIT 0xffff | |
76 | #define inb(x) (0) | |
77 | #define inw(x) (0) | |
78 | #define inl(x) (0) | |
79 | #define outb(x,y) | |
80 | #define outw(x,y) | |
81 | #define outl(x,y) | |
82 | #define insb(x,y,z) | |
83 | #define insw(x,y,z) | |
84 | #define insl(x,y,z) | |
85 | #define outsb(x,y,z) | |
86 | #define outsw(x,y,z) | |
87 | #define outsl(x,y,z) | |
88 | ||
89 | /* | |
90 | * Convert a physical pointer to a virtual kernel pointer for /dev/mem | |
91 | * access | |
92 | */ | |
93 | #define xlate_dev_mem_ptr(p) __va(p) | |
94 | ||
95 | /* | |
96 | * Convert a virtual cached pointer to an uncached pointer | |
97 | */ | |
98 | #define xlate_dev_kmem_ptr(p) p | |
99 | ||
100 | #endif |