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