c256f4b959
Cleanup patch which removes the io_page_mask. It fixes the reset on some e1000 devices which is needed for clean kexec reboots. The legacy devices which broke with this patch (parallel port and PC speaker) have now been fixed in Linus' tree. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
142 lines
3.2 KiB
C
142 lines
3.2 KiB
C
/*
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* ppc64 "iomap" interface implementation.
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*
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* (C) Copyright 2004 Linus Torvalds
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*/
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/mm.h>
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#include <asm/io.h>
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/*
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* Here comes the ppc64 implementation of the IOMAP
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* interfaces.
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*/
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unsigned int fastcall ioread8(void __iomem *addr)
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{
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return readb(addr);
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}
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unsigned int fastcall ioread16(void __iomem *addr)
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{
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return readw(addr);
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}
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unsigned int fastcall ioread16be(void __iomem *addr)
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{
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return in_be16(addr);
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}
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unsigned int fastcall ioread32(void __iomem *addr)
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{
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return readl(addr);
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}
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unsigned int fastcall ioread32be(void __iomem *addr)
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{
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return in_be32(addr);
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}
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EXPORT_SYMBOL(ioread8);
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EXPORT_SYMBOL(ioread16);
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EXPORT_SYMBOL(ioread16be);
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EXPORT_SYMBOL(ioread32);
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EXPORT_SYMBOL(ioread32be);
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void fastcall iowrite8(u8 val, void __iomem *addr)
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{
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writeb(val, addr);
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}
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void fastcall iowrite16(u16 val, void __iomem *addr)
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{
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writew(val, addr);
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}
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void fastcall iowrite16be(u16 val, void __iomem *addr)
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{
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out_be16(addr, val);
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}
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void fastcall iowrite32(u32 val, void __iomem *addr)
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{
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writel(val, addr);
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}
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void fastcall iowrite32be(u32 val, void __iomem *addr)
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{
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out_be32(addr, val);
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}
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EXPORT_SYMBOL(iowrite8);
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EXPORT_SYMBOL(iowrite16);
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EXPORT_SYMBOL(iowrite16be);
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EXPORT_SYMBOL(iowrite32);
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EXPORT_SYMBOL(iowrite32be);
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/*
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* These are the "repeat read/write" functions. Note the
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* non-CPU byte order. We do things in "IO byteorder"
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* here.
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*
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* FIXME! We could make these do EEH handling if we really
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* wanted. Not clear if we do.
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*/
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void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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_insb((u8 __iomem *) addr, dst, count);
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}
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void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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_insw_ns((u16 __iomem *) addr, dst, count);
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}
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void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
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{
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_insl_ns((u32 __iomem *) addr, dst, count);
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}
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EXPORT_SYMBOL(ioread8_rep);
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EXPORT_SYMBOL(ioread16_rep);
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EXPORT_SYMBOL(ioread32_rep);
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void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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_outsb((u8 __iomem *) addr, src, count);
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}
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void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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_outsw_ns((u16 __iomem *) addr, src, count);
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}
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void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
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{
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_outsl_ns((u32 __iomem *) addr, src, count);
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}
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EXPORT_SYMBOL(iowrite8_rep);
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EXPORT_SYMBOL(iowrite16_rep);
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EXPORT_SYMBOL(iowrite32_rep);
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void __iomem *ioport_map(unsigned long port, unsigned int len)
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{
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return (void __iomem *) (port+pci_io_base);
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}
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void ioport_unmap(void __iomem *addr)
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{
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/* Nothing to do */
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}
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EXPORT_SYMBOL(ioport_map);
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EXPORT_SYMBOL(ioport_unmap);
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void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
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{
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unsigned long start = pci_resource_start(dev, bar);
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unsigned long len = pci_resource_len(dev, bar);
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unsigned long flags = pci_resource_flags(dev, bar);
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if (!len)
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return NULL;
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if (max && len > max)
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len = max;
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if (flags & IORESOURCE_IO)
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return ioport_map(start, len);
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if (flags & IORESOURCE_MEM)
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return ioremap(start, len);
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/* What? */
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return NULL;
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}
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void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
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{
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/* Nothing to do */
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}
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EXPORT_SYMBOL(pci_iomap);
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EXPORT_SYMBOL(pci_iounmap);
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