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