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[IA64] Add Variable Page Size and IA64 Support in Intel IOMMU

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The patch contains Intel IOMMU IA64 specific code. It defines new
machvec dig_vtd, hooks for IOMMU, DMAR table detection, cache line flush
function, etc.

For a generic kernel with CONFIG_DMAR=y, if Intel IOMMU is detected,
dig_vtd is used for machinve vector. Otherwise, kernel falls back to
dig machine vector. Kernel parameter "machvec=dig" or "intel_iommu=off"
can be used to force kernel to boot dig machine vector.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
This commit is contained in:
Fenghua Yu
2008-10-17 12:14:13 -07:00
committed by Tony Luck
parent 6bb7a93548
commit 62fdd7678a
23 changed files with 620 additions and 13 deletions
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59
arch/ia64/dig/dig_vtd_iommu.c Normal file
View File

@@ -0,0 +1,59 @@
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/intel-iommu.h>
void *
vtd_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t flags)
{
return intel_alloc_coherent(dev, size, dma_handle, flags);
}
EXPORT_SYMBOL_GPL(vtd_alloc_coherent);
void
vtd_free_coherent(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_handle)
{
intel_free_coherent(dev, size, vaddr, dma_handle);
}
EXPORT_SYMBOL_GPL(vtd_free_coherent);
dma_addr_t
vtd_map_single_attrs(struct device *dev, void *addr, size_t size,
int dir, struct dma_attrs *attrs)
{
return intel_map_single(dev, (phys_addr_t)addr, size, dir);
}
EXPORT_SYMBOL_GPL(vtd_map_single_attrs);
void
vtd_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
int dir, struct dma_attrs *attrs)
{
intel_unmap_single(dev, iova, size, dir);
}
EXPORT_SYMBOL_GPL(vtd_unmap_single_attrs);
int
vtd_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
int dir, struct dma_attrs *attrs)
{
return intel_map_sg(dev, sglist, nents, dir);
}
EXPORT_SYMBOL_GPL(vtd_map_sg_attrs);
void
vtd_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
int nents, int dir, struct dma_attrs *attrs)
{
intel_unmap_sg(dev, sglist, nents, dir);
}
EXPORT_SYMBOL_GPL(vtd_unmap_sg_attrs);
int
vtd_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
return 0;
}
EXPORT_SYMBOL_GPL(vtd_dma_mapping_error);