diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2020-12-15 01:37:03 -0600 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-01-28 16:51:18 +0100 |
| commit | 441555c63aca3300a0f6cd5948dbf5bd6e7760b3 (patch) | |
| tree | 0df0af8cb08965309f466bb4f1510018d2a55b30 /drivers/iommu/amd/iommu.c | |
| parent | 0633bbcc1eedb7015554254d54e14602b1d8b989 (diff) | |
iommu/amd: Introduce iommu_v1_iova_to_phys
This implements iova_to_phys for AMD IOMMU v1 pagetable,
which will be used by the IO page table framework.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20201215073705.123786-12-suravee.suthikulpanit@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd/iommu.c')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 16 |
1 files changed, 1 insertions, 15 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index f1a4f535eac8..144ea91a9ec9 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2100,22 +2100,8 @@ static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, { struct protection_domain *domain = to_pdomain(dom); struct io_pgtable_ops *ops = &domain->iop.iop.ops; - struct amd_io_pgtable *pgtable = io_pgtable_ops_to_data(ops); - unsigned long offset_mask, pte_pgsize; - u64 *pte, __pte; - if (domain->iop.mode == PAGE_MODE_NONE) - return iova; - - pte = fetch_pte(pgtable, iova, &pte_pgsize); - - if (!pte || !IOMMU_PTE_PRESENT(*pte)) - return 0; - - offset_mask = pte_pgsize - 1; - __pte = __sme_clr(*pte & PM_ADDR_MASK); - - return (__pte & ~offset_mask) | (iova & offset_mask); + return ops->iova_to_phys(ops, iova); } static bool amd_iommu_capable(enum iommu_cap cap) |