1 /* 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 <linux/export.h> 10 #include <asm/io.h> 11 #include <asm/pci-bridge.h> 12 13 /* 14 * Here comes the ppc64 implementation of the IOMAP 15 * interfaces. 16 */ 17 unsigned int ioread8(void __iomem *addr) 18 { 19 return readb(addr); 20 } 21 unsigned int ioread16(void __iomem *addr) 22 { 23 return readw(addr); 24 } 25 unsigned int ioread16be(void __iomem *addr) 26 { 27 return in_be16(addr); 28 } 29 unsigned int ioread32(void __iomem *addr) 30 { 31 return readl(addr); 32 } 33 unsigned int ioread32be(void __iomem *addr) 34 { 35 return in_be32(addr); 36 } 37 EXPORT_SYMBOL(ioread8); 38 EXPORT_SYMBOL(ioread16); 39 EXPORT_SYMBOL(ioread16be); 40 EXPORT_SYMBOL(ioread32); 41 EXPORT_SYMBOL(ioread32be); 42 43 void iowrite8(u8 val, void __iomem *addr) 44 { 45 writeb(val, addr); 46 } 47 void iowrite16(u16 val, void __iomem *addr) 48 { 49 writew(val, addr); 50 } 51 void iowrite16be(u16 val, void __iomem *addr) 52 { 53 out_be16(addr, val); 54 } 55 void iowrite32(u32 val, void __iomem *addr) 56 { 57 writel(val, addr); 58 } 59 void iowrite32be(u32 val, void __iomem *addr) 60 { 61 out_be32(addr, val); 62 } 63 EXPORT_SYMBOL(iowrite8); 64 EXPORT_SYMBOL(iowrite16); 65 EXPORT_SYMBOL(iowrite16be); 66 EXPORT_SYMBOL(iowrite32); 67 EXPORT_SYMBOL(iowrite32be); 68 69 /* 70 * These are the "repeat read/write" functions. Note the 71 * non-CPU byte order. We do things in "IO byteorder" 72 * here. 73 * 74 * FIXME! We could make these do EEH handling if we really 75 * wanted. Not clear if we do. 76 */ 77 void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) 78 { 79 _insb((u8 __iomem *) addr, dst, count); 80 } 81 void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) 82 { 83 _insw_ns((u16 __iomem *) addr, dst, count); 84 } 85 void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) 86 { 87 _insl_ns((u32 __iomem *) addr, dst, count); 88 } 89 EXPORT_SYMBOL(ioread8_rep); 90 EXPORT_SYMBOL(ioread16_rep); 91 EXPORT_SYMBOL(ioread32_rep); 92 93 void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) 94 { 95 _outsb((u8 __iomem *) addr, src, count); 96 } 97 void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) 98 { 99 _outsw_ns((u16 __iomem *) addr, src, count); 100 } 101 void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) 102 { 103 _outsl_ns((u32 __iomem *) addr, src, count); 104 } 105 EXPORT_SYMBOL(iowrite8_rep); 106 EXPORT_SYMBOL(iowrite16_rep); 107 EXPORT_SYMBOL(iowrite32_rep); 108 109 void __iomem *ioport_map(unsigned long port, unsigned int len) 110 { 111 return (void __iomem *) (port + _IO_BASE); 112 } 113 114 void ioport_unmap(void __iomem *addr) 115 { 116 /* Nothing to do */ 117 } 118 EXPORT_SYMBOL(ioport_map); 119 EXPORT_SYMBOL(ioport_unmap); 120 121 #ifdef CONFIG_PCI 122 void pci_iounmap(struct pci_dev *dev, void __iomem *addr) 123 { 124 if (isa_vaddr_is_ioport(addr)) 125 return; 126 if (pcibios_vaddr_is_ioport(addr)) 127 return; 128 iounmap(addr); 129 } 130 131 EXPORT_SYMBOL(pci_iounmap); 132 #endif /* CONFIG_PCI */ 133