This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / powerpc / kernel / iomap.c

diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c
new file mode 100644 (file)
index 0000000..fd8214c
--- /dev/null
+++ b/arch/powerpc/kernel/iomap.c
@@ -0,0 +1,144 @@
+/*
+ * 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>
+
+/*
+ * Here comes the ppc64 implementation of the IOMAP 
+ * interfaces.
+ */
+unsigned int fastcall ioread8(void __iomem *addr)
+{
+       return readb(addr);
+}
+unsigned int fastcall ioread16(void __iomem *addr)
+{
+       return readw(addr);
+}
+unsigned int fastcall ioread16be(void __iomem *addr)
+{
+       return in_be16(addr);
+}
+unsigned int fastcall ioread32(void __iomem *addr)
+{
+       return readl(addr);
+}
+unsigned int fastcall ioread32be(void __iomem *addr)
+{
+       return in_be32(addr);
+}
+EXPORT_SYMBOL(ioread8);
+EXPORT_SYMBOL(ioread16);
+EXPORT_SYMBOL(ioread16be);
+EXPORT_SYMBOL(ioread32);
+EXPORT_SYMBOL(ioread32be);
+
+void fastcall iowrite8(u8 val, void __iomem *addr)
+{
+       writeb(val, addr);
+}
+void fastcall iowrite16(u16 val, void __iomem *addr)
+{
+       writew(val, addr);
+}
+void fastcall iowrite16be(u16 val, void __iomem *addr)
+{
+       out_be16(addr, val);
+}
+void fastcall iowrite32(u32 val, void __iomem *addr)
+{
+       writel(val, addr);
+}
+void fastcall 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)
+{
+       if (!_IO_IS_VALID(port))
+               return NULL;
+       return (void __iomem *) (port+pci_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)
+{
+       unsigned long start = pci_resource_start(dev, bar);
+       unsigned long 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)
+{
+       /* Nothing to do */
+}
+EXPORT_SYMBOL(pci_iomap);
+EXPORT_SYMBOL(pci_iounmap);