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alpha: switch to GENERIC_PCI_IOMAP

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alpha copied pci_iomap from generic code to avoid
pulling the rest of iomap.c in.  Since that's in
a separate file now, we can reuse the common implementation.

The only difference is handling of nocache flag,
that turns out to be done correctly by the
generic code since arch/alpha/include/asm/io.h
defines ioremap_nocache same as ioremap.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Michael S. Tsirkin 2011-11-24 20:48:56 +02:00
parent 66eab4df28
commit f2971c4c31
2 changed files with 2 additions and 25 deletions
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1
arch/alpha/Kconfig
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@ -315,6 +315,7 @@ config ISA_DMA_API
config PCI
bool
depends on !ALPHA_JENSEN
select GENERIC_PCI_IOMAP
default y
help
Find out whether you have a PCI motherboard. PCI is the name of a

26
arch/alpha/kernel/pci.c
View File

@ -508,30 +508,7 @@ sys_pciconfig_iobase(long which, unsigned long bus, unsigned long dfn)
return -EOPNOTSUPP;
}
/* Create an __iomem token from a PCI BAR. Copied from lib/iomap.c with
no changes, since we don't want the other things in that object file. */
void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
{
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 || !start)
return NULL;
if (maxlen && len > maxlen)
len = maxlen;
if (flags & IORESOURCE_IO)
return ioport_map(start, len);
if (flags & IORESOURCE_MEM) {
/* Not checking IORESOURCE_CACHEABLE because alpha does
not distinguish between ioremap and ioremap_nocache. */
return ioremap(start, len);
}
return NULL;
}
/* Destroy that token. Not copied from lib/iomap.c. */
/* Destroy an __iomem token. Not copied from lib/iomap.c. */
void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
{
@ -539,7 +516,6 @@ void pci_iounmap(struct pci_dev *dev, void __iomem * addr)
iounmap(addr);
}
EXPORT_SYMBOL(pci_iomap);
EXPORT_SYMBOL(pci_iounmap);
/* FIXME: Some boxes have multiple ISA bridges! */