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/io_pgtable.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/io_pgtable.c')
| -rw-r--r-- | drivers/iommu/amd/io_pgtable.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/iommu/amd/io_pgtable.c b/drivers/iommu/amd/io_pgtable.c index b70eb79d05fb..1c4961e05c12 100644 --- a/drivers/iommu/amd/io_pgtable.c +++ b/drivers/iommu/amd/io_pgtable.c @@ -311,9 +311,9 @@ static u64 *alloc_pte(struct protection_domain *domain, * This function checks if there is a PTE for a given dma address. If * there is one, it returns the pointer to it. */ -u64 *fetch_pte(struct amd_io_pgtable *pgtable, - unsigned long address, - unsigned long *page_size) +static u64 *fetch_pte(struct amd_io_pgtable *pgtable, + unsigned long address, + unsigned long *page_size) { int level; u64 *pte; @@ -386,13 +386,10 @@ static struct page *free_clear_pte(u64 *pte, u64 pteval, struct page *freelist) * supporting all features of AMD IOMMU page tables like level skipping * and full 64 bit address spaces. */ -int iommu_map_page(struct protection_domain *dom, - unsigned long iova, - unsigned long paddr, - unsigned long size, - int prot, - gfp_t gfp) +static int iommu_v1_map_page(struct io_pgtable_ops *ops, unsigned long iova, + phys_addr_t paddr, size_t size, int prot, gfp_t gfp) { + struct protection_domain *dom = io_pgtable_ops_to_domain(ops); struct page *freelist = NULL; bool updated = false; u64 __pte, *pte; @@ -455,11 +452,11 @@ out: return ret; } -unsigned long iommu_unmap_page(struct protection_domain *dom, - unsigned long iova, - unsigned long size) +static unsigned long iommu_v1_unmap_page(struct io_pgtable_ops *ops, + unsigned long iova, + size_t size, + struct iommu_iotlb_gather *gather) { - struct io_pgtable_ops *ops = &dom->iop.iop.ops; struct amd_io_pgtable *pgtable = io_pgtable_ops_to_data(ops); unsigned long long unmapped; unsigned long unmap_size; @@ -548,6 +545,8 @@ static struct io_pgtable *v1_alloc_pgtable(struct io_pgtable_cfg *cfg, void *coo cfg->oas = IOMMU_OUT_ADDR_BIT_SIZE, cfg->tlb = &v1_flush_ops; + pgtable->iop.ops.map = iommu_v1_map_page; + pgtable->iop.ops.unmap = iommu_v1_unmap_page; pgtable->iop.ops.iova_to_phys = iommu_v1_iova_to_phys; return &pgtable->iop; |