| /* |
| * ppc64 "iomap" interface implementation. |
| * |
| * (C) Copyright 2004 Linus Torvalds |
| */ |
| #include <linux/init.h> |
| #include <linux/pci.h> |
| #include <linux/mm.h> |
| #include <linux/export.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); |
| |
| #ifdef CONFIG_PCI |
| 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); |
| #endif /* CONFIG_PCI */ |