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VT-d: Change {un}map_range functions to implement {un}map interface

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This patch changes the iommu-api functions for mapping and
unmapping page ranges to use the new page-size based
interface. This allows to remove the range based functions
later.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel 2010-01-20 17:17:37 +01:00
parent 6765178694
commit b146a1c9f7
1 changed files with 12 additions and 10 deletions
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22
drivers/pci/intel-iommu.c
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@ -3626,14 +3626,15 @@ static void intel_iommu_detach_device(struct iommu_domain *domain,
domain_remove_one_dev_info(dmar_domain, pdev);
}
static int intel_iommu_map_range(struct iommu_domain *domain,
unsigned long iova, phys_addr_t hpa,
size_t size, int iommu_prot)
static int intel_iommu_map(struct iommu_domain *domain,
unsigned long iova, phys_addr_t hpa,
int gfp_order, int iommu_prot)
{
struct dmar_domain *dmar_domain = domain->priv;
u64 max_addr;
int addr_width;
int prot = 0;
size_t size;
int ret;
if (iommu_prot & IOMMU_READ)
@ -3643,6 +3644,7 @@ static int intel_iommu_map_range(struct iommu_domain *domain,
if ((iommu_prot & IOMMU_CACHE) && dmar_domain->iommu_snooping)
prot |= DMA_PTE_SNP;
size = PAGE_SIZE << gfp_order;
max_addr = iova + size;
if (dmar_domain->max_addr < max_addr) {
int min_agaw;
@ -3669,19 +3671,19 @@ static int intel_iommu_map_range(struct iommu_domain *domain,
return ret;
}
static void intel_iommu_unmap_range(struct iommu_domain *domain,
unsigned long iova, size_t size)
static int intel_iommu_unmap(struct iommu_domain *domain,
unsigned long iova, int gfp_order)
{
struct dmar_domain *dmar_domain = domain->priv;
if (!size)
return;
size_t size = PAGE_SIZE << gfp_order;
dma_pte_clear_range(dmar_domain, iova >> VTD_PAGE_SHIFT,
(iova + size - 1) >> VTD_PAGE_SHIFT);
if (dmar_domain->max_addr == iova + size)
dmar_domain->max_addr = iova;
return gfp_order;
}
static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain,
@ -3714,8 +3716,8 @@ static struct iommu_ops intel_iommu_ops = {
.domain_destroy = intel_iommu_domain_destroy,
.attach_dev = intel_iommu_attach_device,
.detach_dev = intel_iommu_detach_device,
.map_range = intel_iommu_map_range,
.unmap_range = intel_iommu_unmap_range,
.map = intel_iommu_map,
.unmap = intel_iommu_unmap,
.iova_to_phys = intel_iommu_iova_to_phys,
.domain_has_cap = intel_iommu_domain_has_cap,
};