Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * ppc64 "iomap" interface implementation. |
3 | * | |
4 | * (C) Copyright 2004 Linus Torvalds | |
5 | */ | |
6 | #include <linux/init.h> | |
7 | #include <linux/pci.h> | |
8 | #include <linux/mm.h> | |
9 | #include <asm/io.h> | |
10 | ||
11 | /* | |
12 | * Here comes the ppc64 implementation of the IOMAP | |
13 | * interfaces. | |
14 | */ | |
8943212c | 15 | unsigned int ioread8(void __iomem *addr) |
1da177e4 LT |
16 | { |
17 | return readb(addr); | |
18 | } | |
8943212c | 19 | unsigned int ioread16(void __iomem *addr) |
1da177e4 LT |
20 | { |
21 | return readw(addr); | |
22 | } | |
8943212c | 23 | unsigned int ioread16be(void __iomem *addr) |
76637536 AO |
24 | { |
25 | return in_be16(addr); | |
26 | } | |
8943212c | 27 | unsigned int ioread32(void __iomem *addr) |
1da177e4 LT |
28 | { |
29 | return readl(addr); | |
30 | } | |
8943212c | 31 | unsigned int ioread32be(void __iomem *addr) |
76637536 AO |
32 | { |
33 | return in_be32(addr); | |
34 | } | |
1da177e4 LT |
35 | EXPORT_SYMBOL(ioread8); |
36 | EXPORT_SYMBOL(ioread16); | |
76637536 | 37 | EXPORT_SYMBOL(ioread16be); |
1da177e4 | 38 | EXPORT_SYMBOL(ioread32); |
76637536 | 39 | EXPORT_SYMBOL(ioread32be); |
1da177e4 | 40 | |
8943212c | 41 | void iowrite8(u8 val, void __iomem *addr) |
1da177e4 LT |
42 | { |
43 | writeb(val, addr); | |
44 | } | |
8943212c | 45 | void iowrite16(u16 val, void __iomem *addr) |
1da177e4 LT |
46 | { |
47 | writew(val, addr); | |
48 | } | |
8943212c | 49 | void iowrite16be(u16 val, void __iomem *addr) |
76637536 AO |
50 | { |
51 | out_be16(addr, val); | |
52 | } | |
8943212c | 53 | void iowrite32(u32 val, void __iomem *addr) |
1da177e4 LT |
54 | { |
55 | writel(val, addr); | |
56 | } | |
8943212c | 57 | void iowrite32be(u32 val, void __iomem *addr) |
76637536 AO |
58 | { |
59 | out_be32(addr, val); | |
60 | } | |
1da177e4 LT |
61 | EXPORT_SYMBOL(iowrite8); |
62 | EXPORT_SYMBOL(iowrite16); | |
76637536 | 63 | EXPORT_SYMBOL(iowrite16be); |
1da177e4 | 64 | EXPORT_SYMBOL(iowrite32); |
76637536 | 65 | EXPORT_SYMBOL(iowrite32be); |
1da177e4 LT |
66 | |
67 | /* | |
68 | * These are the "repeat read/write" functions. Note the | |
69 | * non-CPU byte order. We do things in "IO byteorder" | |
70 | * here. | |
71 | * | |
72 | * FIXME! We could make these do EEH handling if we really | |
73 | * wanted. Not clear if we do. | |
74 | */ | |
75 | void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) | |
76 | { | |
6c9afc65 | 77 | _insb((u8 __iomem *) addr, dst, count); |
1da177e4 LT |
78 | } |
79 | void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) | |
80 | { | |
6c9afc65 | 81 | _insw_ns((u16 __iomem *) addr, dst, count); |
1da177e4 LT |
82 | } |
83 | void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) | |
84 | { | |
6c9afc65 | 85 | _insl_ns((u32 __iomem *) addr, dst, count); |
1da177e4 LT |
86 | } |
87 | EXPORT_SYMBOL(ioread8_rep); | |
88 | EXPORT_SYMBOL(ioread16_rep); | |
89 | EXPORT_SYMBOL(ioread32_rep); | |
90 | ||
91 | void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) | |
92 | { | |
6c9afc65 | 93 | _outsb((u8 __iomem *) addr, src, count); |
1da177e4 LT |
94 | } |
95 | void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) | |
96 | { | |
6c9afc65 | 97 | _outsw_ns((u16 __iomem *) addr, src, count); |
1da177e4 LT |
98 | } |
99 | void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) | |
100 | { | |
6c9afc65 | 101 | _outsl_ns((u32 __iomem *) addr, src, count); |
1da177e4 LT |
102 | } |
103 | EXPORT_SYMBOL(iowrite8_rep); | |
104 | EXPORT_SYMBOL(iowrite16_rep); | |
105 | EXPORT_SYMBOL(iowrite32_rep); | |
106 | ||
107 | void __iomem *ioport_map(unsigned long port, unsigned int len) | |
108 | { | |
68a64357 | 109 | return (void __iomem *) (port + _IO_BASE); |
1da177e4 LT |
110 | } |
111 | ||
112 | void ioport_unmap(void __iomem *addr) | |
113 | { | |
114 | /* Nothing to do */ | |
115 | } | |
116 | EXPORT_SYMBOL(ioport_map); | |
117 | EXPORT_SYMBOL(ioport_unmap); | |
118 | ||
119 | void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max) | |
120 | { | |
121 | unsigned long start = pci_resource_start(dev, bar); | |
122 | unsigned long len = pci_resource_len(dev, bar); | |
123 | unsigned long flags = pci_resource_flags(dev, bar); | |
124 | ||
125 | if (!len) | |
126 | return NULL; | |
127 | if (max && len > max) | |
128 | len = max; | |
129 | if (flags & IORESOURCE_IO) | |
130 | return ioport_map(start, len); | |
131 | if (flags & IORESOURCE_MEM) | |
132 | return ioremap(start, len); | |
133 | /* What? */ | |
134 | return NULL; | |
135 | } | |
136 | ||
137 | void pci_iounmap(struct pci_dev *dev, void __iomem *addr) | |
138 | { | |
139 | /* Nothing to do */ | |
140 | } | |
141 | EXPORT_SYMBOL(pci_iomap); | |
142 | EXPORT_SYMBOL(pci_iounmap); |