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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
25static 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
43static inline void *phys_to_virt(unsigned long address)
44{
45 return __va(address);
46}
47
48extern 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
63static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
64{
65 return __ioremap(offset, size, 0);
66}
67
68extern void iounmap(volatile void __iomem *addr);
69#define ioremap_nocache(off,size) ioremap(off,size)
70
71/*
72 * IO bus memory addresses are also 1:1 with the physical address
73 */
74#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
75#define page_to_bus page_to_phys
76#define virt_to_bus virt_to_phys
77
78extern unsigned char _inb(unsigned long);
79extern unsigned short _inw(unsigned long);
80extern unsigned long _inl(unsigned long);
81extern unsigned char _inb_p(unsigned long);
82extern unsigned short _inw_p(unsigned long);
83extern unsigned long _inl_p(unsigned long);
84extern void _outb(unsigned char, unsigned long);
85extern void _outw(unsigned short, unsigned long);
86extern void _outl(unsigned long, unsigned long);
87extern void _outb_p(unsigned char, unsigned long);
88extern void _outw_p(unsigned short, unsigned long);
89extern void _outl_p(unsigned long, unsigned long);
90extern void _insb(unsigned int, void *, unsigned long);
91extern void _insw(unsigned int, void *, unsigned long);
92extern void _insl(unsigned int, void *, unsigned long);
93extern void _outsb(unsigned int, const void *, unsigned long);
94extern void _outsw(unsigned int, const void *, unsigned long);
95extern void _outsl(unsigned int, const void *, unsigned long);
96
97static inline unsigned char _readb(unsigned long addr)
98{
99 return *(volatile unsigned char __force *)addr;
100}
101
102static inline unsigned short _readw(unsigned long addr)
103{
104 return *(volatile unsigned short __force *)addr;
105}
106
107static inline unsigned long _readl(unsigned long addr)
108{
109 return *(volatile unsigned long __force *)addr;
110}
111
112static inline void _writeb(unsigned char b, unsigned long addr)
113{
114 *(volatile unsigned char __force *)addr = b;
115}
116
117static inline void _writew(unsigned short w, unsigned long addr)
118{
119 *(volatile unsigned short __force *)addr = w;
120}
121
122static inline void _writel(unsigned long l, unsigned long addr)
123{
124 *(volatile unsigned long __force *)addr = l;
125}
126
127#define inb _inb
128#define inw _inw
129#define inl _inl
130#define outb _outb
131#define outw _outw
132#define outl _outl
133
134#define inb_p _inb_p
135#define inw_p _inw_p
136#define inl_p _inl_p
137#define outb_p _outb_p
138#define outw_p _outw_p
139#define outl_p _outl_p
140
141#define insb _insb
142#define insw _insw
143#define insl _insl
144#define outsb _outsb
145#define outsw _outsw
146#define outsl _outsl
147
148#define readb(addr) _readb((unsigned long)(addr))
149#define readw(addr) _readw((unsigned long)(addr))
150#define readl(addr) _readl((unsigned long)(addr))
151#define __raw_readb readb
152#define __raw_readw readw
153#define __raw_readl readl
154#define readb_relaxed readb
155#define readw_relaxed readw
156#define readl_relaxed readl
157
158#define writeb(val, addr) _writeb((val), (unsigned long)(addr))
159#define writew(val, addr) _writew((val), (unsigned long)(addr))
160#define writel(val, addr) _writel((val), (unsigned long)(addr))
161#define __raw_writeb writeb
162#define __raw_writew writew
163#define __raw_writel writel
164
165#define ioread8 read
166#define ioread16 readw
167#define ioread32 readl
168#define iowrite8 writeb
169#define iowrite16 writew
170#define iowrite32 writel
171
172#define mmiowb()
173
174#define flush_write_buffers() do { } while (0) /* M32R_FIXME */
175
176static inline void
177memset_io(volatile void __iomem *addr, unsigned char val, int count)
178{
179 memset((void __force *) addr, val, count);
180}
181
182static inline void
183memcpy_fromio(void *dst, volatile void __iomem *src, int count)
184{
185 memcpy(dst, (void __force *) src, count);
186}
187
188static inline void
189memcpy_toio(volatile void __iomem *dst, const void *src, int count)
190{
191 memcpy((void __force *) dst, src, count);
192}
193
194/*
195 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
196 * access
197 */
198#define xlate_dev_mem_ptr(p) __va(p)
199
200/*
201 * Convert a virtual cached pointer to an uncached pointer
202 */
203#define xlate_dev_kmem_ptr(p) p
204
205#endif /* __KERNEL__ */
206
207#endif /* _ASM_M32R_IO_H */