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x86/amd-iommu: Implement ->{un}map callbacks for iommu-api

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This patch implements the new callbacks for the IOMMU-API
with functions that can handle different page sizes in the
IOMMU page table.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2010-01-21 16:37:36 +01:00
parent f03152bb7d
commit 468e2366cd
1 changed files with 29 additions and 0 deletions
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29
arch/x86/kernel/amd_iommu.c
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@ -2552,6 +2552,33 @@ static void amd_iommu_unmap_range(struct iommu_domain *dom,
iommu_flush_tlb_pde(domain);
}
static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova,
phys_addr_t paddr, int gfp_order, int iommu_prot)
{
unsigned long page_size = 0x1000UL << gfp_order;
struct protection_domain *domain = dom->priv;
int prot = 0;
if (iommu_prot & IOMMU_READ)
prot |= IOMMU_PROT_IR;
if (iommu_prot & IOMMU_WRITE)
prot |= IOMMU_PROT_IW;
return iommu_map_page(domain, iova, paddr, prot, page_size);
}
static int amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova,
int gfp_order)
{
struct protection_domain *domain = dom->priv;
unsigned long page_size, unmap_size;
page_size = 0x1000UL << gfp_order;
unmap_size = iommu_unmap_page(domain, iova, page_size);
return get_order(unmap_size);
}
static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom,
unsigned long iova)
{
@ -2587,6 +2614,8 @@ static struct iommu_ops amd_iommu_ops = {
.domain_destroy = amd_iommu_domain_destroy,
.attach_dev = amd_iommu_attach_device,
.detach_dev = amd_iommu_detach_device,
.map = amd_iommu_map,
.unmap = amd_iommu_unmap,
.map_range = amd_iommu_map_range,
.unmap_range = amd_iommu_unmap_range,
.iova_to_phys = amd_iommu_iova_to_phys,