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[IA64] SN specific version of dma_get_required_mask()

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Create a platform specific version of dma_get_required_mask()
for ia64 SN Altix. All SN Altix platforms support 64 bit DMA
addressing regardless of the size of system memory.
Create an ia64 machvec for dma_get_required_mask, with the
SN version unconditionally returning DMA_64BIT_MASK.

Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
John Keller
2008-11-24 16:47:17 -06:00
committed by Tony Luck
parent a6a3bb5c88
commit 175add1981
7 changed files with 49 additions and 5 deletions
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6
arch/ia64/sn/pci/pci_dma.c
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@@ -356,6 +356,12 @@ int sn_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
}
EXPORT_SYMBOL(sn_dma_mapping_error);
u64 sn_dma_get_required_mask(struct device *dev)
{
return DMA_64BIT_MASK;
}
EXPORT_SYMBOL_GPL(sn_dma_get_required_mask);
char *sn_pci_get_legacy_mem(struct pci_bus *bus)
{
if (!SN_PCIBUS_BUSSOFT(bus))