1/*
2 * include/asm-v850/io.h -- Misc I/O operations
3 *
4 *  Copyright (C) 2001,02,03,04,05  NEC Electronics Corporation
5 *  Copyright (C) 2001,02,03,04,05  Miles Bader <miles@gnu.org>
6 *
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
30#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))
36
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
99
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)
115
116#define mmiowb()
117
118#define page_to_phys(page)      ((page - mem_map) << PAGE_SHIFT)
119
120/* Conversion between virtual and physical mappings.  */
121#define mm_ptov(addr)		((void *)__phys_to_virt (addr))
122#define mm_vtop(addr)		((unsigned long)__virt_to_phys (addr))
123#define phys_to_virt(addr)	((void *)__phys_to_virt (addr))
124#define virt_to_phys(addr)	((unsigned long)__virt_to_phys (addr))
125
126#define memcpy_fromio(dst, src, len) memcpy (dst, (void *)src, len)
127#define memcpy_toio(dst, src, len) memcpy ((void *)dst, src, len)
128
129/*
130 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
131 * access
132 */
133#define xlate_dev_mem_ptr(p)	__va(p)
134
135/*
136 * Convert a virtual cached pointer to an uncached pointer
137 */
138#define xlate_dev_kmem_ptr(p)	p
139
140#endif /* __V850_IO_H__ */
141