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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _ASM_M32R_IO_H |
3 | #define _ASM_M32R_IO_H | |
4 | ||
5 | #include <linux/string.h> | |
6 | #include <linux/compiler.h> | |
7 | #include <asm/page.h> /* __va */ | |
8 | ||
9 | #ifdef __KERNEL__ | |
10 | ||
11 | #define IO_SPACE_LIMIT 0xFFFFFFFF | |
12 | ||
13 | /** | |
14 | * virt_to_phys - map virtual addresses to physical | |
15 | * @address: address to remap | |
16 | * | |
17 | * The returned physical address is the physical (CPU) mapping for | |
18 | * the memory address given. It is only valid to use this function on | |
19 | * addresses directly mapped or allocated via kmalloc. | |
20 | * | |
21 | * This function does not give bus mappings for DMA transfers. In | |
22 | * almost all conceivable cases a device driver should not be using | |
23 | * this function | |
24 | */ | |
25 | ||
26 | static inline unsigned long virt_to_phys(volatile void * address) | |
27 | { | |
28 | return __pa(address); | |
29 | } | |
30 | ||
31 | /** | |
32 | * phys_to_virt - map physical address to virtual | |
33 | * @address: address to remap | |
34 | * | |
35 | * The returned virtual address is a current CPU mapping for | |
36 | * the memory address given. It is only valid to use this function on | |
37 | * addresses that have a kernel mapping | |
38 | * | |
39 | * This function does not handle bus mappings for DMA transfers. In | |
40 | * almost all conceivable cases a device driver should not be using | |
41 | * this function | |
42 | */ | |
43 | ||
44 | static inline void *phys_to_virt(unsigned long address) | |
45 | { | |
46 | return __va(address); | |
47 | } | |
48 | ||
49 | extern void __iomem * | |
50 | __ioremap(unsigned long offset, unsigned long size, unsigned long flags); | |
51 | ||
52 | /** | |
53 | * ioremap - map bus memory into CPU space | |
54 | * @offset: bus address of the memory | |
55 | * @size: size of the resource to map | |
56 | * | |
57 | * ioremap performs a platform specific sequence of operations to | |
58 | * make bus memory CPU accessible via the readb/readw/readl/writeb/ | |
59 | * writew/writel functions and the other mmio helpers. The returned | |
60 | * address is not guaranteed to be usable directly as a virtual | |
61 | * address. | |
62 | */ | |
63 | ||
24558a0f | 64 | static inline void __iomem *ioremap(unsigned long offset, unsigned long size) |
1da177e4 LT |
65 | { |
66 | return __ioremap(offset, size, 0); | |
67 | } | |
68 | ||
69 | extern void iounmap(volatile void __iomem *addr); | |
70 | #define ioremap_nocache(off,size) ioremap(off,size) | |
71a49d16 | 71 | #define ioremap_wc ioremap_nocache |
556269c1 | 72 | #define ioremap_wt ioremap_nocache |
4c73e892 | 73 | #define ioremap_uc ioremap_nocache |
1da177e4 LT |
74 | |
75 | /* | |
76 | * IO bus memory addresses are also 1:1 with the physical address | |
77 | */ | |
78 | #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) | |
79 | #define page_to_bus page_to_phys | |
80 | #define virt_to_bus virt_to_phys | |
81 | ||
82 | extern unsigned char _inb(unsigned long); | |
83 | extern unsigned short _inw(unsigned long); | |
84 | extern unsigned long _inl(unsigned long); | |
85 | extern unsigned char _inb_p(unsigned long); | |
86 | extern unsigned short _inw_p(unsigned long); | |
87 | extern unsigned long _inl_p(unsigned long); | |
88 | extern void _outb(unsigned char, unsigned long); | |
89 | extern void _outw(unsigned short, unsigned long); | |
90 | extern void _outl(unsigned long, unsigned long); | |
91 | extern void _outb_p(unsigned char, unsigned long); | |
92 | extern void _outw_p(unsigned short, unsigned long); | |
93 | extern void _outl_p(unsigned long, unsigned long); | |
94 | extern void _insb(unsigned int, void *, unsigned long); | |
95 | extern void _insw(unsigned int, void *, unsigned long); | |
96 | extern void _insl(unsigned int, void *, unsigned long); | |
97 | extern void _outsb(unsigned int, const void *, unsigned long); | |
98 | extern void _outsw(unsigned int, const void *, unsigned long); | |
99 | extern void _outsl(unsigned int, const void *, unsigned long); | |
100 | ||
101 | static inline unsigned char _readb(unsigned long addr) | |
102 | { | |
103 | return *(volatile unsigned char __force *)addr; | |
104 | } | |
105 | ||
106 | static inline unsigned short _readw(unsigned long addr) | |
107 | { | |
108 | return *(volatile unsigned short __force *)addr; | |
109 | } | |
110 | ||
111 | static inline unsigned long _readl(unsigned long addr) | |
112 | { | |
113 | return *(volatile unsigned long __force *)addr; | |
114 | } | |
115 | ||
116 | static inline void _writeb(unsigned char b, unsigned long addr) | |
117 | { | |
118 | *(volatile unsigned char __force *)addr = b; | |
119 | } | |
120 | ||
121 | static inline void _writew(unsigned short w, unsigned long addr) | |
122 | { | |
123 | *(volatile unsigned short __force *)addr = w; | |
124 | } | |
125 | ||
126 | static inline void _writel(unsigned long l, unsigned long addr) | |
127 | { | |
128 | *(volatile unsigned long __force *)addr = l; | |
129 | } | |
130 | ||
131 | #define inb _inb | |
132 | #define inw _inw | |
133 | #define inl _inl | |
134 | #define outb _outb | |
135 | #define outw _outw | |
136 | #define outl _outl | |
137 | ||
138 | #define inb_p _inb_p | |
139 | #define inw_p _inw_p | |
140 | #define inl_p _inl_p | |
141 | #define outb_p _outb_p | |
142 | #define outw_p _outw_p | |
143 | #define outl_p _outl_p | |
144 | ||
145 | #define insb _insb | |
146 | #define insw _insw | |
147 | #define insl _insl | |
148 | #define outsb _outsb | |
149 | #define outsw _outsw | |
150 | #define outsl _outsl | |
151 | ||
152 | #define readb(addr) _readb((unsigned long)(addr)) | |
153 | #define readw(addr) _readw((unsigned long)(addr)) | |
154 | #define readl(addr) _readl((unsigned long)(addr)) | |
155 | #define __raw_readb readb | |
156 | #define __raw_readw readw | |
157 | #define __raw_readl readl | |
158 | #define readb_relaxed readb | |
159 | #define readw_relaxed readw | |
160 | #define readl_relaxed readl | |
161 | ||
162 | #define writeb(val, addr) _writeb((val), (unsigned long)(addr)) | |
163 | #define writew(val, addr) _writew((val), (unsigned long)(addr)) | |
164 | #define writel(val, addr) _writel((val), (unsigned long)(addr)) | |
165 | #define __raw_writeb writeb | |
166 | #define __raw_writew writew | |
167 | #define __raw_writel writel | |
cb147c0f WD |
168 | #define writeb_relaxed writeb |
169 | #define writew_relaxed writew | |
170 | #define writel_relaxed writel | |
1da177e4 | 171 | |
92a8ed4c | 172 | #define ioread8 readb |
d2c5821c HT |
173 | #define ioread16 readw |
174 | #define ioread32 readl | |
175 | #define iowrite8 writeb | |
176 | #define iowrite16 writew | |
177 | #define iowrite32 writel | |
178 | ||
92a8ed4c SM |
179 | #define ioread8_rep(p, dst, count) insb((unsigned long)(p), (dst), (count)) |
180 | #define ioread16_rep(p, dst, count) insw((unsigned long)(p), (dst), (count)) | |
181 | #define ioread32_rep(p, dst, count) insl((unsigned long)(p), (dst), (count)) | |
182 | ||
183 | #define iowrite8_rep(p, src, count) outsb((unsigned long)(p), (src), (count)) | |
184 | #define iowrite16_rep(p, src, count) outsw((unsigned long)(p), (src), (count)) | |
185 | #define iowrite32_rep(p, src, count) outsl((unsigned long)(p), (src), (count)) | |
186 | ||
7525a990 PH |
187 | #define ioread16be(addr) be16_to_cpu(readw(addr)) |
188 | #define ioread32be(addr) be32_to_cpu(readl(addr)) | |
189 | #define iowrite16be(v, addr) writew(cpu_to_be16(v), (addr)) | |
190 | #define iowrite32be(v, addr) writel(cpu_to_be32(v), (addr)) | |
191 | ||
1da177e4 LT |
192 | #define mmiowb() |
193 | ||
194 | #define flush_write_buffers() do { } while (0) /* M32R_FIXME */ | |
195 | ||
1da177e4 LT |
196 | static inline void |
197 | memset_io(volatile void __iomem *addr, unsigned char val, int count) | |
198 | { | |
199 | memset((void __force *) addr, val, count); | |
200 | } | |
201 | ||
202 | static inline void | |
203 | memcpy_fromio(void *dst, volatile void __iomem *src, int count) | |
204 | { | |
205 | memcpy(dst, (void __force *) src, count); | |
206 | } | |
207 | ||
208 | static inline void | |
209 | memcpy_toio(volatile void __iomem *dst, const void *src, int count) | |
210 | { | |
211 | memcpy((void __force *) dst, src, count); | |
212 | } | |
213 | ||
214 | /* | |
215 | * Convert a physical pointer to a virtual kernel pointer for /dev/mem | |
216 | * access | |
217 | */ | |
218 | #define xlate_dev_mem_ptr(p) __va(p) | |
219 | ||
220 | /* | |
221 | * Convert a virtual cached pointer to an uncached pointer | |
222 | */ | |
223 | #define xlate_dev_kmem_ptr(p) p | |
224 | ||
225 | #endif /* __KERNEL__ */ | |
226 | ||
227 | #endif /* _ASM_M32R_IO_H */ |