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
226
227
|
/*
* U-boot - io.h IO routines
*
* Copyright 2004-2009 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef _BLACKFIN_IO_H
#define _BLACKFIN_IO_H
#ifdef __KERNEL__
#include <asm/blackfin.h>
#define __iomem
static inline void sync(void)
{
SSYNC();
}
/*
* Given a physical address and a length, return a virtual address
* that can be used to access the memory range with the caching
* properties specified by "flags".
*/
#define MAP_NOCACHE (0)
#define MAP_WRCOMBINE (0)
#define MAP_WRBACK (0)
#define MAP_WRTHROUGH (0)
static inline void *
map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
return (void *)paddr;
}
/*
* Take down a mapping set up by map_physmem().
*/
static inline void unmap_physmem(void *vaddr, unsigned long flags)
{
}
static inline phys_addr_t virt_to_phys(void * vaddr)
{
return (phys_addr_t)(vaddr);
}
/*
* These are for ISA/PCI shared memory _only_ and should never be used
* on any other type of memory, including Zorro memory. They are meant to
* access the bus in the bus byte order which is little-endian!.
*
* readX/writeX() are used to access memory mapped devices. On some
* architectures the memory mapped IO stuff needs to be accessed
* differently. On the bfin architecture, we just read/write the
* memory location directly.
*/
#ifndef __ASSEMBLY__
static inline unsigned char readb(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;
__asm__ __volatile__ (
"cli %1;"
"NOP; NOP; SSYNC;"
"%0 = b [%2] (z);"
"sti %1;"
: "=d"(val), "=d"(tmp)
: "a"(addr)
);
return (unsigned char) val;
}
static inline unsigned short readw(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;
__asm__ __volatile__ (
"cli %1;"
"NOP; NOP; SSYNC;"
"%0 = w [%2] (z);"
"sti %1;"
: "=d"(val), "=d"(tmp)
: "a"(addr)
);
return (unsigned short) val;
}
static inline unsigned int readl(const volatile void __iomem *addr)
{
unsigned int val;
int tmp;
__asm__ __volatile__ (
"cli %1;"
"NOP; NOP; SSYNC;"
"%0 = [%2];"
"sti %1;"
: "=d"(val), "=d"(tmp)
: "a"(addr)
);
return val;
}
#endif /* __ASSEMBLY__ */
#define writeb(b, addr) (void)((*(volatile unsigned char *) (addr)) = (b))
#define writew(b, addr) (void)((*(volatile unsigned short *) (addr)) = (b))
#define writel(b, addr) (void)((*(volatile unsigned int *) (addr)) = (b))
#define __raw_readb readb
#define __raw_readw readw
#define __raw_readl readl
#define __raw_writeb writeb
#define __raw_writew writew
#define __raw_writel writel
#define memset_io(a, b, c) memset((void *)(a), (b), (c))
#define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
#define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
/* Convert "I/O port addresses" to actual addresses. i.e. ugly casts. */
#define __io(port) ((void *)(unsigned long)(port))
#define inb(port) readb(__io(port))
#define inw(port) readw(__io(port))
#define inl(port) readl(__io(port))
#define outb(x, port) writeb(x, __io(port))
#define outw(x, port) writew(x, __io(port))
#define outl(x, port) writel(x, __io(port))
#define inb_p(port) inb(__io(port))
#define inw_p(port) inw(__io(port))
#define inl_p(port) inl(__io(port))
#define outb_p(x, port) outb(x, __io(port))
#define outw_p(x, port) outw(x, __io(port))
#define outl_p(x, port) outl(x, __io(port))
#define ioread8_rep(a, d, c) readsb(a, d, c)
#define ioread16_rep(a, d, c) readsw(a, d, c)
#define ioread32_rep(a, d, c) readsl(a, d, c)
#define iowrite8_rep(a, s, c) writesb(a, s, c)
#define iowrite16_rep(a, s, c) writesw(a, s, c)
#define iowrite32_rep(a, s, c) writesl(a, s, c)
#define ioread8(x) readb(x)
#define ioread16(x) readw(x)
#define ioread32(x) readl(x)
#define iowrite8(val, x) writeb(val, x)
#define iowrite16(val, x) writew(val, x)
#define iowrite32(val, x) writel(val, x)
#define mmiowb() wmb()
#ifndef __ASSEMBLY__
extern void outsb(unsigned long port, const void *addr, unsigned long count);
extern void outsw(unsigned long port, const void *addr, unsigned long count);
extern void outsw_8(unsigned long port, const void *addr, unsigned long count);
extern void outsl(unsigned long port, const void *addr, unsigned long count);
extern void insb(unsigned long port, void *addr, unsigned long count);
extern void insw(unsigned long port, void *addr, unsigned long count);
extern void insw_8(unsigned long port, void *addr, unsigned long count);
extern void insl(unsigned long port, void *addr, unsigned long count);
extern void insl_16(unsigned long port, void *addr, unsigned long count);
static inline void readsl(const void __iomem *addr, void *buf, int len)
{
insl((unsigned long)addr, buf, len);
}
static inline void readsw(const void __iomem *addr, void *buf, int len)
{
insw((unsigned long)addr, buf, len);
}
static inline void readsb(const void __iomem *addr, void *buf, int len)
{
insb((unsigned long)addr, buf, len);
}
static inline void writesl(const void __iomem *addr, const void *buf, int len)
{
outsl((unsigned long)addr, buf, len);
}
static inline void writesw(const void __iomem *addr, const void *buf, int len)
{
outsw((unsigned long)addr, buf, len);
}
static inline void writesb(const void __iomem *addr, const void *buf, int len)
{
outsb((unsigned long)addr, buf, len);
}
#if defined(CONFIG_STAMP_CF) || defined(CONFIG_BFIN_IDE)
/* This hack for CF/IDE needs to be addressed at some point */
extern void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words);
extern void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words);
extern unsigned char cf_inb(volatile unsigned char *addr);
extern void cf_outb(unsigned char val, volatile unsigned char *addr);
#undef inb
#undef outb
#undef insw
#undef outsw
#define inb(addr) cf_inb((void *)(addr))
#define outb(x, addr) cf_outb((unsigned char)(x), (void *)(addr))
#define insw(port, addr, cnt) cf_insw((void *)(addr), (void *)(port), cnt)
#define outsw(port, addr, cnt) cf_outsw((void *)(port), (void *)(addr), cnt)
#endif
#endif
#endif /* __KERNEL__ */
#endif
|
