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
|
/*
* Copyright (C) 2006 Atmel Corporation
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#ifndef __ASM_AVR32_IO_H
#define __ASM_AVR32_IO_H
#include <asm/types.h>
#ifdef __KERNEL__
/*
* Generic IO read/write. These perform native-endian accesses. Note
* that some architectures will want to re-define __raw_{read,write}w.
*/
extern void __raw_writesb(unsigned int addr, const void *data, int bytelen);
extern void __raw_writesw(unsigned int addr, const void *data, int wordlen);
extern void __raw_writesl(unsigned int addr, const void *data, int longlen);
extern void __raw_readsb(unsigned int addr, void *data, int bytelen);
extern void __raw_readsw(unsigned int addr, void *data, int wordlen);
extern void __raw_readsl(unsigned int addr, void *data, int longlen);
#define __raw_writeb(v,a) (*(volatile unsigned char *)(a) = (v))
#define __raw_writew(v,a) (*(volatile unsigned short *)(a) = (v))
#define __raw_writel(v,a) (*(volatile unsigned int *)(a) = (v))
#define __raw_readb(a) (*(volatile unsigned char *)(a))
#define __raw_readw(a) (*(volatile unsigned short *)(a))
#define __raw_readl(a) (*(volatile unsigned int *)(a))
/* As long as I/O is only performed in P4 (or possibly P3), we're safe */
#define writeb(v,a) __raw_writeb(v,a)
#define writew(v,a) __raw_writew(v,a)
#define writel(v,a) __raw_writel(v,a)
#define readb(a) __raw_readb(a)
#define readw(a) __raw_readw(a)
#define readl(a) __raw_readl(a)
/*
* Bad read/write accesses...
*/
extern void __readwrite_bug(const char *fn);
#define IO_SPACE_LIMIT 0xffffffff
/*
* All I/O is memory mapped, so these macros doesn't make very much sense
*/
#define outb(v,p) __raw_writeb(v, p)
#define outw(v,p) __raw_writew(cpu_to_le16(v),p)
#define outl(v,p) __raw_writel(cpu_to_le32(v),p)
#define inb(p) ({ unsigned int __v = __raw_readb(p); __v; })
#define inw(p) ({ unsigned int __v = __le16_to_cpu(__raw_readw(p)); __v; })
#define inl(p) ({ unsigned int __v = __le32_to_cpu(__raw_readl(p)); __v; })
#include <asm/addrspace.h>
/* virt_to_phys will only work when address is in P1 or P2 */
static inline phys_addr_t virt_to_phys(volatile void *address)
{
return PHYSADDR(address);
}
static inline void *phys_to_virt(phys_addr_t address)
{
return (void *)P1SEGADDR(address);
}
#define cached(addr) ((void *)P1SEGADDR(addr))
#define uncached(addr) ((void *)P2SEGADDR(addr))
#endif /* __KERNEL__ */
static inline void sync(void)
{
}
/*
* 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".
*
* This implementation works for memory below 512MiB (flash, etc.) as
* well as above 3.5GiB (internal peripherals.)
*/
#define MAP_NOCACHE (0)
#define MAP_WRCOMBINE (1 << 7)
#define MAP_WRBACK (MAP_WRCOMBINE | (1 << 9))
#define MAP_WRTHROUGH (MAP_WRBACK | (1 << 0))
static inline void *
map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
if (flags == MAP_WRBACK)
return (void *)P1SEGADDR(paddr);
else
return (void *)P2SEGADDR(paddr);
}
/*
* Take down a mapping set up by map_physmem().
*/
static inline void unmap_physmem(void *vaddr, unsigned long len)
{
}
#endif /* __ASM_AVR32_IO_H */
|
