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iommu/vt-d: Implement map/unmap_pages() iommu_ops callback

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Implement the map_pages() and unmap_pages() callback for the Intel IOMMU
driver to allow calls from iommu core to map and unmap multiple pages of
the same size in one call. With map/unmap_pages() implemented, the prior
map/unmap callbacks are deprecated.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210720020615.4144323-3-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Lu Baolu 2021-07-20 10:06:14 +08:00 committed by Joerg Roedel
parent a886d5a7e6
commit 3f34f12597
1 changed files with 35 additions and 2 deletions
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37
drivers/iommu/intel/iommu.c
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@ -5065,6 +5065,28 @@ static int intel_iommu_map(struct iommu_domain *domain,
hpa >> VTD_PAGE_SHIFT, size, prot);
}
static int intel_iommu_map_pages(struct iommu_domain *domain,
unsigned long iova, phys_addr_t paddr,
size_t pgsize, size_t pgcount,
int prot, gfp_t gfp, size_t *mapped)
{
unsigned long pgshift = __ffs(pgsize);
size_t size = pgcount << pgshift;
int ret;
if (pgsize != SZ_4K && pgsize != SZ_2M && pgsize != SZ_1G)
return -EINVAL;
if (!IS_ALIGNED(iova | paddr, pgsize))
return -EINVAL;
ret = intel_iommu_map(domain, iova, paddr, size, prot, gfp);
if (!ret && mapped)
*mapped = size;
return ret;
}
static size_t intel_iommu_unmap(struct iommu_domain *domain,
unsigned long iova, size_t size,
struct iommu_iotlb_gather *gather)
@ -5094,6 +5116,17 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain,
return size;
}
static size_t intel_iommu_unmap_pages(struct iommu_domain *domain,
unsigned long iova,
size_t pgsize, size_t pgcount,
struct iommu_iotlb_gather *gather)
{
unsigned long pgshift = __ffs(pgsize);
size_t size = pgcount << pgshift;
return intel_iommu_unmap(domain, iova, size, gather);
}
static void intel_iommu_tlb_sync(struct iommu_domain *domain,
struct iommu_iotlb_gather *gather)
{
@ -5591,9 +5624,9 @@ const struct iommu_ops intel_iommu_ops = {
.aux_attach_dev = intel_iommu_aux_attach_device,
.aux_detach_dev = intel_iommu_aux_detach_device,
.aux_get_pasid = intel_iommu_aux_get_pasid,
.map = intel_iommu_map,
.map_pages = intel_iommu_map_pages,
.unmap_pages = intel_iommu_unmap_pages,
.iotlb_sync_map = intel_iommu_iotlb_sync_map,
.unmap = intel_iommu_unmap,
.flush_iotlb_all = intel_flush_iotlb_all,
.iotlb_sync = intel_iommu_tlb_sync,
.iova_to_phys = intel_iommu_iova_to_phys,