1 /*
2 * ppc64 "iomap" interface implementation.
3 *
4 * (C) Copyright 2004 Linus Torvalds
5 */
6 #include <linux/pci.h>
7 #include <linux/mm.h>
8 #include <linux/export.h>
9 #include <asm/io.h>
10 #include <asm/pci-bridge.h>
11
12 /*
13 * Here comes the ppc64 implementation of the IOMAP
14 * interfaces.
15 */
ioread8(void __iomem * addr)16 unsigned int ioread8(void __iomem *addr)
17 {
18 return readb(addr);
19 }
ioread16(void __iomem * addr)20 unsigned int ioread16(void __iomem *addr)
21 {
22 return readw(addr);
23 }
ioread16be(void __iomem * addr)24 unsigned int ioread16be(void __iomem *addr)
25 {
26 return readw_be(addr);
27 }
ioread32(void __iomem * addr)28 unsigned int ioread32(void __iomem *addr)
29 {
30 return readl(addr);
31 }
ioread32be(void __iomem * addr)32 unsigned int ioread32be(void __iomem *addr)
33 {
34 return readl_be(addr);
35 }
36 EXPORT_SYMBOL(ioread8);
37 EXPORT_SYMBOL(ioread16);
38 EXPORT_SYMBOL(ioread16be);
39 EXPORT_SYMBOL(ioread32);
40 EXPORT_SYMBOL(ioread32be);
41
iowrite8(u8 val,void __iomem * addr)42 void iowrite8(u8 val, void __iomem *addr)
43 {
44 writeb(val, addr);
45 }
iowrite16(u16 val,void __iomem * addr)46 void iowrite16(u16 val, void __iomem *addr)
47 {
48 writew(val, addr);
49 }
iowrite16be(u16 val,void __iomem * addr)50 void iowrite16be(u16 val, void __iomem *addr)
51 {
52 writew_be(val, addr);
53 }
iowrite32(u32 val,void __iomem * addr)54 void iowrite32(u32 val, void __iomem *addr)
55 {
56 writel(val, addr);
57 }
iowrite32be(u32 val,void __iomem * addr)58 void iowrite32be(u32 val, void __iomem *addr)
59 {
60 writel_be(val, addr);
61 }
62 EXPORT_SYMBOL(iowrite8);
63 EXPORT_SYMBOL(iowrite16);
64 EXPORT_SYMBOL(iowrite16be);
65 EXPORT_SYMBOL(iowrite32);
66 EXPORT_SYMBOL(iowrite32be);
67
68 /*
69 * These are the "repeat read/write" functions. Note the
70 * non-CPU byte order. We do things in "IO byteorder"
71 * here.
72 *
73 * FIXME! We could make these do EEH handling if we really
74 * wanted. Not clear if we do.
75 */
ioread8_rep(void __iomem * addr,void * dst,unsigned long count)76 void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
77 {
78 readsb(addr, dst, count);
79 }
ioread16_rep(void __iomem * addr,void * dst,unsigned long count)80 void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
81 {
82 readsw(addr, dst, count);
83 }
ioread32_rep(void __iomem * addr,void * dst,unsigned long count)84 void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
85 {
86 readsl(addr, dst, count);
87 }
88 EXPORT_SYMBOL(ioread8_rep);
89 EXPORT_SYMBOL(ioread16_rep);
90 EXPORT_SYMBOL(ioread32_rep);
91
iowrite8_rep(void __iomem * addr,const void * src,unsigned long count)92 void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
93 {
94 writesb(addr, src, count);
95 }
iowrite16_rep(void __iomem * addr,const void * src,unsigned long count)96 void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
97 {
98 writesw(addr, src, count);
99 }
iowrite32_rep(void __iomem * addr,const void * src,unsigned long count)100 void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
101 {
102 writesl(addr, src, count);
103 }
104 EXPORT_SYMBOL(iowrite8_rep);
105 EXPORT_SYMBOL(iowrite16_rep);
106 EXPORT_SYMBOL(iowrite32_rep);
107
ioport_map(unsigned long port,unsigned int len)108 void __iomem *ioport_map(unsigned long port, unsigned int len)
109 {
110 return (void __iomem *) (port + _IO_BASE);
111 }
112
ioport_unmap(void __iomem * addr)113 void ioport_unmap(void __iomem *addr)
114 {
115 /* Nothing to do */
116 }
117 EXPORT_SYMBOL(ioport_map);
118 EXPORT_SYMBOL(ioport_unmap);
119
120 #ifdef CONFIG_PCI
pci_iounmap(struct pci_dev * dev,void __iomem * addr)121 void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
122 {
123 if (isa_vaddr_is_ioport(addr))
124 return;
125 if (pcibios_vaddr_is_ioport(addr))
126 return;
127 iounmap(addr);
128 }
129
130 EXPORT_SYMBOL(pci_iounmap);
131 #endif /* CONFIG_PCI */
132