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1 | #ifndef _BFIN_IO_H |
2 | #define _BFIN_IO_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | ||
6 | #ifndef __ASSEMBLY__ | |
7 | #include <linux/types.h> | |
8 | #endif | |
9 | #include <linux/compiler.h> | |
10 | ||
11 | /* | |
12 | * These are for ISA/PCI shared memory _only_ and should never be used | |
13 | * on any other type of memory, including Zorro memory. They are meant to | |
14 | * access the bus in the bus byte order which is little-endian!. | |
15 | * | |
16 | * readX/writeX() are used to access memory mapped devices. On some | |
17 | * architectures the memory mapped IO stuff needs to be accessed | |
18 | * differently. On the bfin architecture, we just read/write the | |
19 | * memory location directly. | |
20 | */ | |
21 | #ifndef __ASSEMBLY__ | |
22 | ||
216e39db | 23 | static inline unsigned char readb(const volatile void __iomem *addr) |
1394f032 BW |
24 | { |
25 | unsigned int val; | |
26 | int tmp; | |
27 | ||
28 | __asm__ __volatile__ ("cli %1;\n\t" | |
29 | "NOP; NOP; SSYNC;\n\t" | |
30 | "%0 = b [%2] (z);\n\t" | |
31 | "sti %1;\n\t" | |
32 | : "=d"(val), "=d"(tmp): "a"(addr) | |
33 | ); | |
34 | ||
35 | return (unsigned char) val; | |
36 | } | |
37 | ||
216e39db | 38 | static inline unsigned short readw(const volatile void __iomem *addr) |
1394f032 BW |
39 | { |
40 | unsigned int val; | |
41 | int tmp; | |
42 | ||
43 | __asm__ __volatile__ ("cli %1;\n\t" | |
44 | "NOP; NOP; SSYNC;\n\t" | |
45 | "%0 = w [%2] (z);\n\t" | |
46 | "sti %1;\n\t" | |
47 | : "=d"(val), "=d"(tmp): "a"(addr) | |
48 | ); | |
49 | ||
50 | return (unsigned short) val; | |
51 | } | |
52 | ||
216e39db | 53 | static inline unsigned int readl(const volatile void __iomem *addr) |
1394f032 BW |
54 | { |
55 | unsigned int val; | |
56 | int tmp; | |
57 | ||
58 | __asm__ __volatile__ ("cli %1;\n\t" | |
59 | "NOP; NOP; SSYNC;\n\t" | |
60 | "%0 = [%2];\n\t" | |
61 | "sti %1;\n\t" | |
62 | : "=d"(val), "=d"(tmp): "a"(addr) | |
63 | ); | |
64 | return val; | |
65 | } | |
66 | ||
67 | #endif /* __ASSEMBLY__ */ | |
68 | ||
69 | #define writeb(b,addr) (void)((*(volatile unsigned char *) (addr)) = (b)) | |
70 | #define writew(b,addr) (void)((*(volatile unsigned short *) (addr)) = (b)) | |
71 | #define writel(b,addr) (void)((*(volatile unsigned int *) (addr)) = (b)) | |
72 | ||
73 | #define __raw_readb readb | |
74 | #define __raw_readw readw | |
75 | #define __raw_readl readl | |
76 | #define __raw_writeb writeb | |
77 | #define __raw_writew writew | |
78 | #define __raw_writel writel | |
79 | #define memset_io(a,b,c) memset((void *)(a),(b),(c)) | |
80 | #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c)) | |
81 | #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c)) | |
82 | ||
83 | #define inb(addr) readb(addr) | |
84 | #define inw(addr) readw(addr) | |
85 | #define inl(addr) readl(addr) | |
86 | #define outb(x,addr) ((void) writeb(x,addr)) | |
87 | #define outw(x,addr) ((void) writew(x,addr)) | |
88 | #define outl(x,addr) ((void) writel(x,addr)) | |
89 | ||
90 | #define inb_p(addr) inb(addr) | |
91 | #define inw_p(addr) inw(addr) | |
92 | #define inl_p(addr) inl(addr) | |
93 | #define outb_p(x,addr) outb(x,addr) | |
94 | #define outw_p(x,addr) outw(x,addr) | |
95 | #define outl_p(x,addr) outl(x,addr) | |
96 | ||
97 | #define ioread8_rep(a,d,c) insb(a,d,c) | |
98 | #define ioread16_rep(a,d,c) insw(a,d,c) | |
99 | #define ioread32_rep(a,d,c) insl(a,d,c) | |
100 | #define iowrite8_rep(a,s,c) outsb(a,s,c) | |
101 | #define iowrite16_rep(a,s,c) outsw(a,s,c) | |
102 | #define iowrite32_rep(a,s,c) outsl(a,s,c) | |
103 | ||
104 | #define ioread8(X) readb(X) | |
105 | #define ioread16(X) readw(X) | |
106 | #define ioread32(X) readl(X) | |
107 | #define iowrite8(val,X) writeb(val,X) | |
108 | #define iowrite16(val,X) writew(val,X) | |
109 | #define iowrite32(val,X) writel(val,X) | |
110 | ||
111 | #define IO_SPACE_LIMIT 0xffffffff | |
112 | ||
113 | /* Values for nocacheflag and cmode */ | |
114 | #define IOMAP_NOCACHE_SER 1 | |
115 | ||
116 | #ifndef __ASSEMBLY__ | |
117 | ||
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118 | extern void outsb(unsigned long port, const void *addr, unsigned long count); |
119 | extern void outsw(unsigned long port, const void *addr, unsigned long count); | |
120 | extern void outsl(unsigned long port, const void *addr, unsigned long count); | |
1394f032 | 121 | |
b7b2d344 BW |
122 | extern void insb(unsigned long port, void *addr, unsigned long count); |
123 | extern void insw(unsigned long port, void *addr, unsigned long count); | |
124 | extern void insl(unsigned long port, void *addr, unsigned long count); | |
5c91fb90 | 125 | extern void insl_16(unsigned long port, void *addr, unsigned long count); |
23ee968d | 126 | |
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127 | extern void dma_outsb(unsigned long port, const void *addr, unsigned short count); |
128 | extern void dma_outsw(unsigned long port, const void *addr, unsigned short count); | |
129 | extern void dma_outsl(unsigned long port, const void *addr, unsigned short count); | |
23ee968d | 130 | |
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131 | extern void dma_insb(unsigned long port, void *addr, unsigned short count); |
132 | extern void dma_insw(unsigned long port, void *addr, unsigned short count); | |
133 | extern void dma_insl(unsigned long port, void *addr, unsigned short count); | |
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134 | |
135 | /* | |
136 | * Map some physical address range into the kernel address space. | |
137 | */ | |
138 | static inline void __iomem *__ioremap(unsigned long physaddr, unsigned long size, | |
139 | int cacheflag) | |
140 | { | |
141 | return (void __iomem *)physaddr; | |
142 | } | |
143 | ||
144 | /* | |
145 | * Unmap a ioremap()ed region again | |
146 | */ | |
147 | static inline void iounmap(void *addr) | |
148 | { | |
149 | } | |
150 | ||
151 | /* | |
152 | * __iounmap unmaps nearly everything, so be careful | |
153 | * it doesn't free currently pointer/page tables anymore but it | |
154 | * wans't used anyway and might be added later. | |
155 | */ | |
156 | static inline void __iounmap(void *addr, unsigned long size) | |
157 | { | |
158 | } | |
159 | ||
160 | /* | |
161 | * Set new cache mode for some kernel address space. | |
162 | * The caller must push data for that range itself, if such data may already | |
163 | * be in the cache. | |
164 | */ | |
165 | static inline void kernel_set_cachemode(void *addr, unsigned long size, | |
166 | int cmode) | |
167 | { | |
168 | } | |
169 | ||
170 | static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size) | |
171 | { | |
172 | return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); | |
173 | } | |
174 | static inline void __iomem *ioremap_nocache(unsigned long physaddr, | |
175 | unsigned long size) | |
176 | { | |
177 | return __ioremap(physaddr, size, IOMAP_NOCACHE_SER); | |
178 | } | |
179 | ||
180 | extern void blkfin_inv_cache_all(void); | |
181 | ||
182 | #endif | |
183 | ||
184 | #define ioport_map(port, nr) ((void __iomem*)(port)) | |
185 | #define ioport_unmap(addr) | |
186 | ||
1394f032 BW |
187 | /* Pages to physical address... */ |
188 | #define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT) | |
189 | #define page_to_bus(page) ((page - mem_map) << PAGE_SHIFT) | |
190 | ||
1394f032 BW |
191 | #define phys_to_virt(vaddr) ((void *) (vaddr)) |
192 | #define virt_to_phys(vaddr) ((unsigned long) (vaddr)) | |
193 | ||
194 | #define virt_to_bus virt_to_phys | |
195 | #define bus_to_virt phys_to_virt | |
196 | ||
197 | /* | |
198 | * Convert a physical pointer to a virtual kernel pointer for /dev/mem | |
199 | * access | |
200 | */ | |
201 | #define xlate_dev_mem_ptr(p) __va(p) | |
202 | ||
203 | /* | |
204 | * Convert a virtual cached pointer to an uncached pointer | |
205 | */ | |
206 | #define xlate_dev_kmem_ptr(p) p | |
207 | ||
208 | #endif /* __KERNEL__ */ | |
209 | ||
210 | #endif /* _BFIN_IO_H */ |