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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * include/asm-v850/io.h -- Misc I/O operations
3 *
Miles Bader21ea9f62005-07-27 11:44:54 -07004 * Copyright (C) 2001,02,03,04,05 NEC Electronics Corporation
5 * Copyright (C) 2001,02,03,04,05 Miles Bader <miles@gnu.org>
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 *
7 * This file is subject to the terms and conditions of the GNU General
8 * Public License. See the file COPYING in the main directory of this
9 * archive for more details.
10 *
11 * Written by Miles Bader <miles@gnu.org>
12 */
13
14#ifndef __V850_IO_H__
15#define __V850_IO_H__
16
17#define IO_SPACE_LIMIT 0xFFFFFFFF
18
19#define readb(addr) \
20 ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
21#define readw(addr) \
22 ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
23#define readl(addr) \
24 ({ unsigned long __v = (*(volatile unsigned long *) (addr)); __v; })
25
26#define readb_relaxed(a) readb(a)
27#define readw_relaxed(a) readw(a)
28#define readl_relaxed(a) readl(a)
29
Miles Bader21ea9f62005-07-27 11:44:54 -070030#define writeb(val, addr) \
31 (void)((*(volatile unsigned char *) (addr)) = (val))
32#define writew(val, addr) \
33 (void)((*(volatile unsigned short *) (addr)) = (val))
34#define writel(val, addr) \
35 (void)((*(volatile unsigned int *) (addr)) = (val))
Linus Torvalds1da177e2005-04-16 15:20:36 -070036
37#define __raw_readb readb
38#define __raw_readw readw
39#define __raw_readl readl
40#define __raw_writeb writeb
41#define __raw_writew writew
42#define __raw_writel writel
43
44#define inb(addr) readb (addr)
45#define inw(addr) readw (addr)
46#define inl(addr) readl (addr)
47#define outb(x, addr) ((void) writeb (x, addr))
48#define outw(x, addr) ((void) writew (x, addr))
49#define outl(x, addr) ((void) writel (x, addr))
50
51#define inb_p(port) inb((port))
52#define outb_p(val, port) outb((val), (port))
53#define inw_p(port) inw((port))
54#define outw_p(val, port) outw((val), (port))
55#define inl_p(port) inl((port))
56#define outl_p(val, port) outl((val), (port))
57
58static inline void insb (unsigned long port, void *dst, unsigned long count)
59{
60 unsigned char *p = dst;
61 while (count--)
62 *p++ = inb (port);
63}
64static inline void insw (unsigned long port, void *dst, unsigned long count)
65{
66 unsigned short *p = dst;
67 while (count--)
68 *p++ = inw (port);
69}
70static inline void insl (unsigned long port, void *dst, unsigned long count)
71{
72 unsigned long *p = dst;
73 while (count--)
74 *p++ = inl (port);
75}
76
77static inline void
78outsb (unsigned long port, const void *src, unsigned long count)
79{
80 const unsigned char *p = src;
81 while (count--)
82 outb (*p++, port);
83}
84static inline void
85outsw (unsigned long port, const void *src, unsigned long count)
86{
87 const unsigned short *p = src;
88 while (count--)
89 outw (*p++, port);
90}
91static inline void
92outsl (unsigned long port, const void *src, unsigned long count)
93{
94 const unsigned long *p = src;
95 while (count--)
96 outl (*p++, port);
97}
98
Miles Bader21ea9f62005-07-27 11:44:54 -070099
100/* Some places try to pass in an loff_t for PHYSADDR (?!), so we cast it to
101 long before casting it to a pointer to avoid compiler warnings. */
102#define ioremap(physaddr, size) ((void __iomem *)(unsigned long)(physaddr))
103#define iounmap(addr) ((void)0)
104
105#define ioremap_nocache(physaddr, size) ioremap (physaddr, size)
106#define ioremap_writethrough(physaddr, size) ioremap (physaddr, size)
107#define ioremap_fullcache(physaddr, size) ioremap (physaddr, size)
108
109#define ioread8(addr) readb (addr)
110#define ioread16(addr) readw (addr)
111#define ioread32(addr) readl (addr)
112#define iowrite8(val, addr) writeb (val, addr)
113#define iowrite16(val, addr) writew (val, addr)
114#define iowrite32(val, addr) writel (val, addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115
116#define mmiowb()
117
118#define page_to_phys(page) ((page - mem_map) << PAGE_SHIFT)
119#if 0
120/* This is really stupid; don't define it. */
121#define page_to_bus(page) page_to_phys (page)
122#endif
123
124/* Conversion between virtual and physical mappings. */
125#define mm_ptov(addr) ((void *)__phys_to_virt (addr))
126#define mm_vtop(addr) ((unsigned long)__virt_to_phys (addr))
127#define phys_to_virt(addr) ((void *)__phys_to_virt (addr))
128#define virt_to_phys(addr) ((unsigned long)__virt_to_phys (addr))
129
130#define memcpy_fromio(dst, src, len) memcpy (dst, (void *)src, len)
131#define memcpy_toio(dst, src, len) memcpy ((void *)dst, src, len)
132
133/*
134 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
135 * access
136 */
137#define xlate_dev_mem_ptr(p) __va(p)
138
139/*
140 * Convert a virtual cached pointer to an uncached pointer
141 */
142#define xlate_dev_kmem_ptr(p) p
143
144#endif /* __V850_IO_H__ */