diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2020-12-15 10:37:04 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-01-28 18:51:18 +0300 |
| commit | fd86c9501a9b3e5eb7e46b03f03ffa4bf892b523 (patch) | |
| tree | 98eb1497df6709ccc5ec452a3267f43207798653 /drivers/iommu/amd/iommu.c | |
| parent | 441555c63aca3300a0f6cd5948dbf5bd6e7760b3 (diff) | |
| download | linux-fd86c9501a9b3e5eb7e46b03f03ffa4bf892b523.tar.xz | |
iommu/amd: Introduce iommu_v1_map_page and iommu_v1_unmap_page
These implement map and unmap for AMD IOMMU v1 pagetable, which
will be used by the IO pagetable framework.
Also clean up unused extern function declarations.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Link: https://lore.kernel.org/r/20201215073705.123786-13-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 | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 144ea91a9ec9..256d38ad6afb 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2065,8 +2065,9 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova, gfp_t gfp) { struct protection_domain *domain = to_pdomain(dom); + struct io_pgtable_ops *ops = &domain->iop.iop.ops; int prot = 0; - int ret; + int ret = -EINVAL; if (domain->iop.mode == PAGE_MODE_NONE) return -EINVAL; @@ -2076,9 +2077,10 @@ static int amd_iommu_map(struct iommu_domain *dom, unsigned long iova, if (iommu_prot & IOMMU_WRITE) prot |= IOMMU_PROT_IW; - ret = iommu_map_page(domain, iova, paddr, page_size, prot, gfp); - - domain_flush_np_cache(domain, iova, page_size); + if (ops->map) { + ret = ops->map(ops, iova, paddr, page_size, prot, gfp); + domain_flush_np_cache(domain, iova, page_size); + } return ret; } @@ -2088,11 +2090,12 @@ static size_t amd_iommu_unmap(struct iommu_domain *dom, unsigned long iova, struct iommu_iotlb_gather *gather) { struct protection_domain *domain = to_pdomain(dom); + struct io_pgtable_ops *ops = &domain->iop.iop.ops; if (domain->iop.mode == PAGE_MODE_NONE) return 0; - return iommu_unmap_page(domain, iova, page_size); + return (ops->unmap) ? ops->unmap(ops, iova, page_size, gather) : 0; } static phys_addr_t amd_iommu_iova_to_phys(struct iommu_domain *dom, |