1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/module.h>
3 #include <linux/types.h>
4
5 #include <asm/io.h>
6
7 /*
8 * Copy data from IO memory space to "real" memory space.
9 * This needs to be optimized.
10 */
memcpy_fromio(void * to,const volatile void __iomem * from,long count)11 void memcpy_fromio(void *to, const volatile void __iomem *from, long count)
12 {
13 char *dst = to;
14
15 while (count) {
16 count--;
17 *dst++ = readb(from++);
18 }
19 }
20 EXPORT_SYMBOL(memcpy_fromio);
21
22 /*
23 * Copy data from "real" memory space to IO memory space.
24 * This needs to be optimized.
25 */
memcpy_toio(volatile void __iomem * to,const void * from,long count)26 void memcpy_toio(volatile void __iomem *to, const void *from, long count)
27 {
28 const char *src = from;
29
30 while (count) {
31 count--;
32 writeb(*src++, to++);
33 }
34 }
35 EXPORT_SYMBOL(memcpy_toio);
36
37 /*
38 * "memset" on IO memory space.
39 * This needs to be optimized.
40 */
memset_io(volatile void __iomem * dst,int c,long count)41 void memset_io(volatile void __iomem *dst, int c, long count)
42 {
43 unsigned char ch = (char)(c & 0xff);
44
45 while (count) {
46 count--;
47 writeb(ch, dst);
48 dst++;
49 }
50 }
51 EXPORT_SYMBOL(memset_io);
52
53 #ifdef CONFIG_IA64_GENERIC
54
55 #undef __ia64_inb
56 #undef __ia64_inw
57 #undef __ia64_inl
58 #undef __ia64_outb
59 #undef __ia64_outw
60 #undef __ia64_outl
61 #undef __ia64_readb
62 #undef __ia64_readw
63 #undef __ia64_readl
64 #undef __ia64_readq
65 #undef __ia64_readb_relaxed
66 #undef __ia64_readw_relaxed
67 #undef __ia64_readl_relaxed
68 #undef __ia64_readq_relaxed
69 #undef __ia64_writeb
70 #undef __ia64_writew
71 #undef __ia64_writel
72 #undef __ia64_writeq
73 #undef __ia64_mmiowb
74
75 unsigned int
__ia64_inb(unsigned long port)76 __ia64_inb (unsigned long port)
77 {
78 return ___ia64_inb(port);
79 }
80
81 unsigned int
__ia64_inw(unsigned long port)82 __ia64_inw (unsigned long port)
83 {
84 return ___ia64_inw(port);
85 }
86
87 unsigned int
__ia64_inl(unsigned long port)88 __ia64_inl (unsigned long port)
89 {
90 return ___ia64_inl(port);
91 }
92
93 void
__ia64_outb(unsigned char val,unsigned long port)94 __ia64_outb (unsigned char val, unsigned long port)
95 {
96 ___ia64_outb(val, port);
97 }
98
99 void
__ia64_outw(unsigned short val,unsigned long port)100 __ia64_outw (unsigned short val, unsigned long port)
101 {
102 ___ia64_outw(val, port);
103 }
104
105 void
__ia64_outl(unsigned int val,unsigned long port)106 __ia64_outl (unsigned int val, unsigned long port)
107 {
108 ___ia64_outl(val, port);
109 }
110
111 unsigned char
__ia64_readb(void __iomem * addr)112 __ia64_readb (void __iomem *addr)
113 {
114 return ___ia64_readb (addr);
115 }
116
117 unsigned short
__ia64_readw(void __iomem * addr)118 __ia64_readw (void __iomem *addr)
119 {
120 return ___ia64_readw (addr);
121 }
122
123 unsigned int
__ia64_readl(void __iomem * addr)124 __ia64_readl (void __iomem *addr)
125 {
126 return ___ia64_readl (addr);
127 }
128
129 unsigned long
__ia64_readq(void __iomem * addr)130 __ia64_readq (void __iomem *addr)
131 {
132 return ___ia64_readq (addr);
133 }
134
135 unsigned char
__ia64_readb_relaxed(void __iomem * addr)136 __ia64_readb_relaxed (void __iomem *addr)
137 {
138 return ___ia64_readb (addr);
139 }
140
141 unsigned short
__ia64_readw_relaxed(void __iomem * addr)142 __ia64_readw_relaxed (void __iomem *addr)
143 {
144 return ___ia64_readw (addr);
145 }
146
147 unsigned int
__ia64_readl_relaxed(void __iomem * addr)148 __ia64_readl_relaxed (void __iomem *addr)
149 {
150 return ___ia64_readl (addr);
151 }
152
153 unsigned long
__ia64_readq_relaxed(void __iomem * addr)154 __ia64_readq_relaxed (void __iomem *addr)
155 {
156 return ___ia64_readq (addr);
157 }
158
159 void
__ia64_mmiowb(void)160 __ia64_mmiowb(void)
161 {
162 ___ia64_mmiowb();
163 }
164
165 #endif /* CONFIG_IA64_GENERIC */
166