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/*
* 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 */
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