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 #include <asm/isa-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 readw_be(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 readl_be(addr); 36 } 37 EXPORT_SYMBOL(ioread8); 38 EXPORT_SYMBOL(ioread16); 39 EXPORT_SYMBOL(ioread16be); 40 EXPORT_SYMBOL(ioread32); 41 EXPORT_SYMBOL(ioread32be); 42 #ifdef __powerpc64__ 43 u64 ioread64(void __iomem *addr) 44 { 45 return readq(addr); 46 } 47 u64 ioread64be(void __iomem *addr) 48 { 49 return readq_be(addr); 50 } 51 EXPORT_SYMBOL(ioread64); 52 EXPORT_SYMBOL(ioread64be); 53 #endif /* __powerpc64__ */ 54 55 void iowrite8(u8 val, void __iomem *addr) 56 { 57 writeb(val, addr); 58 } 59 void iowrite16(u16 val, void __iomem *addr) 60 { 61 writew(val, addr); 62 } 63 void iowrite16be(u16 val, void __iomem *addr) 64 { 65 writew_be(val, addr); 66 } 67 void iowrite32(u32 val, void __iomem *addr) 68 { 69 writel(val, addr); 70 } 71 void iowrite32be(u32 val, void __iomem *addr) 72 { 73 writel_be(val, addr); 74 } 75 EXPORT_SYMBOL(iowrite8); 76 EXPORT_SYMBOL(iowrite16); 77 EXPORT_SYMBOL(iowrite16be); 78 EXPORT_SYMBOL(iowrite32); 79 EXPORT_SYMBOL(iowrite32be); 80 #ifdef __powerpc64__ 81 void iowrite64(u64 val, void __iomem *addr) 82 { 83 writeq(val, addr); 84 } 85 void iowrite64be(u64 val, void __iomem *addr) 86 { 87 writeq_be(val, addr); 88 } 89 EXPORT_SYMBOL(iowrite64); 90 EXPORT_SYMBOL(iowrite64be); 91 #endif /* __powerpc64__ */ 92 93 /* 94 * These are the "repeat read/write" functions. Note the 95 * non-CPU byte order. We do things in "IO byteorder" 96 * here. 97 * 98 * FIXME! We could make these do EEH handling if we really 99 * wanted. Not clear if we do. 100 */ 101 void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) 102 { 103 readsb(addr, dst, count); 104 } 105 void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) 106 { 107 readsw(addr, dst, count); 108 } 109 void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) 110 { 111 readsl(addr, dst, count); 112 } 113 EXPORT_SYMBOL(ioread8_rep); 114 EXPORT_SYMBOL(ioread16_rep); 115 EXPORT_SYMBOL(ioread32_rep); 116 117 void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) 118 { 119 writesb(addr, src, count); 120 } 121 void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) 122 { 123 writesw(addr, src, count); 124 } 125 void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) 126 { 127 writesl(addr, src, count); 128 } 129 EXPORT_SYMBOL(iowrite8_rep); 130 EXPORT_SYMBOL(iowrite16_rep); 131 EXPORT_SYMBOL(iowrite32_rep); 132 133 void __iomem *ioport_map(unsigned long port, unsigned int len) 134 { 135 return (void __iomem *) (port + _IO_BASE); 136 } 137 138 void ioport_unmap(void __iomem *addr) 139 { 140 /* Nothing to do */ 141 } 142 EXPORT_SYMBOL(ioport_map); 143 EXPORT_SYMBOL(ioport_unmap); 144 145 #ifdef CONFIG_PCI 146 void pci_iounmap(struct pci_dev *dev, void __iomem *addr) 147 { 148 if (isa_vaddr_is_ioport(addr)) 149 return; 150 if (pcibios_vaddr_is_ioport(addr)) 151 return; 152 iounmap(addr); 153 } 154 155 EXPORT_SYMBOL(pci_iounmap); 156 #endif /* CONFIG_PCI */ 157