/* * ppc64 "iomap" interface implementation. * * (C) Copyright 2004 Linus Torvalds */ #include <linux/init.h> #include <linux/pci.h> #include <linux/mm.h> #include <asm/io.h> #include <asm/pci-bridge.h> /* * Here comes the ppc64 implementation of the IOMAP * interfaces. */ unsigned int ioread8(void __iomem *addr) { return readb(addr); } unsigned int ioread16(void __iomem *addr) { return readw(addr); } unsigned int ioread16be(void __iomem *addr) { return in_be16(addr); } unsigned int ioread32(void __iomem *addr) { return readl(addr); } unsigned int ioread32be(void __iomem *addr) { return in_be32(addr); } EXPORT_SYMBOL(ioread8); EXPORT_SYMBOL(ioread16); EXPORT_SYMBOL(ioread16be); EXPORT_SYMBOL(ioread32); EXPORT_SYMBOL(ioread32be); void iowrite8(u8 val, void __iomem *addr) { writeb(val, addr); } void iowrite16(u16 val, void __iomem *addr) { writew(val, addr); } void iowrite16be(u16 val, void __iomem *addr) { out_be16(addr, val); } void iowrite32(u32 val, void __iomem *addr) { writel(val, addr); } void iowrite32be(u32 val, void __iomem *addr) { out_be32(addr, val); } EXPORT_SYMBOL(iowrite8); EXPORT_SYMBOL(iowrite16); EXPORT_SYMBOL(iowrite16be); EXPORT_SYMBOL(iowrite32); EXPORT_SYMBOL(iowrite32be); /* * These are the "repeat read/write" functions. Note the * non-CPU byte order. We do things in "IO byteorder" * here. * * FIXME! We could make these do EEH handling if we really * wanted. Not clear if we do. */ void ioread8_rep(void __iomem *addr, void *dst, unsigned long count) { _insb((u8 __iomem *) addr, dst, count); } void ioread16_rep(void __iomem *addr, void *dst, unsigned long count) { _insw_ns((u16 __iomem *) addr, dst, count); } void ioread32_rep(void __iomem *addr, void *dst, unsigned long count) { _insl_ns((u32 __iomem *) addr, dst, count); } EXPORT_SYMBOL(ioread8_rep); EXPORT_SYMBOL(ioread16_rep); EXPORT_SYMBOL(ioread32_rep); void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count) { _outsb((u8 __iomem *) addr, src, count); } void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count) { _outsw_ns((u16 __iomem *) addr, src, count); } void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count) { _outsl_ns((u32 __iomem *) addr, src, count); } EXPORT_SYMBOL(iowrite8_rep); EXPORT_SYMBOL(iowrite16_rep); EXPORT_SYMBOL(iowrite32_rep); void __iomem *ioport_map(unsigned long port, unsigned int len) { return (void __iomem *) (port + _IO_BASE); } void ioport_unmap(void __iomem *addr) { /* Nothing to do */ } EXPORT_SYMBOL(ioport_map); EXPORT_SYMBOL(ioport_unmap); void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max) { resource_size_t start = pci_resource_start(dev, bar); resource_size_t len = pci_resource_len(dev, bar); unsigned long flags = pci_resource_flags(dev, bar); if (!len) return NULL; if (max && len > max) len = max; if (flags & IORESOURCE_IO) return ioport_map(start, len); if (flags & IORESOURCE_MEM) return ioremap(start, len); /* What? */ return NULL; } void pci_iounmap(struct pci_dev *dev, void __iomem *addr) { if (isa_vaddr_is_ioport(addr)) return; if (pcibios_vaddr_is_ioport(addr)) return; iounmap(addr); } EXPORT_SYMBOL(pci_iomap); EXPORT_SYMBOL(pci_iounmap);