iommu: Retire map/unmap ops

With everyone now implementing the new interfaces, clean up the last
remnants of the old map/unmap ops and simplify the calling logic again.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/d2afdf13b2fbf537713c3ec642dfd49d16dd9e6a.1694525662.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

1 files changed, 13 insertions, 47 deletions

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 03202314322b..865fa4f179a8 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -2509,30 +2509,6 @@ out_set_count:
 	return pgsize;
 }
 
-static int __iommu_map_pages(struct iommu_domain *domain, unsigned long iova,
-			     phys_addr_t paddr, size_t size, int prot,
-			     gfp_t gfp, size_t *mapped)
-{
-	const struct iommu_domain_ops *ops = domain->ops;
-	size_t pgsize, count;
-	int ret;
-
-	pgsize = iommu_pgsize(domain, iova, paddr, size, &count);
-
-	pr_debug("mapping: iova 0x%lx pa %pa pgsize 0x%zx count %zu\n",
-		 iova, &paddr, pgsize, count);
-
-	if (ops->map_pages) {
-		ret = ops->map_pages(domain, iova, paddr, pgsize, count, prot,
-				     gfp, mapped);
-	} else {
-		ret = ops->map(domain, iova, paddr, pgsize, prot, gfp);
-		*mapped = ret ? 0 : pgsize;
-	}
-
-	return ret;
-}
-
 static int __iommu_map(struct iommu_domain *domain, unsigned long iova,
 		       phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
 {
@@ -2543,8 +2519,7 @@ static int __iommu_map(struct iommu_domain *domain, unsigned long iova,
 	phys_addr_t orig_paddr = paddr;
 	int ret = 0;
 
-	if (unlikely(!(ops->map || ops->map_pages) ||
-		     domain->pgsize_bitmap == 0UL))
+	if (unlikely(!ops->map_pages || domain->pgsize_bitmap == 0UL))
 		return -ENODEV;
 
 	if (unlikely(!(domain->type & __IOMMU_DOMAIN_PAGING)))
@@ -2567,10 +2542,14 @@ static int __iommu_map(struct iommu_domain *domain, unsigned long iova,
 	pr_debug("map: iova 0x%lx pa %pa size 0x%zx\n", iova, &paddr, size);
 
 	while (size) {
-		size_t mapped = 0;
+		size_t pgsize, count, mapped = 0;
+
+		pgsize = iommu_pgsize(domain, iova, paddr, size, &count);
 
-		ret = __iommu_map_pages(domain, iova, paddr, size, prot, gfp,
-					&mapped);
+		pr_debug("mapping: iova 0x%lx pa %pa pgsize 0x%zx count %zu\n",
+			 iova, &paddr, pgsize, count);
+		ret = ops->map_pages(domain, iova, paddr, pgsize, count, prot,
+				     gfp, &mapped);
 		/*
 		 * Some pages may have been mapped, even if an error occurred,
 		 * so we should account for those so they can be unmapped.
@@ -2614,19 +2593,6 @@ int iommu_map(struct iommu_domain *domain, unsigned long iova,
 }
 EXPORT_SYMBOL_GPL(iommu_map);
 
-static size_t __iommu_unmap_pages(struct iommu_domain *domain,
-				  unsigned long iova, size_t size,
-				  struct iommu_iotlb_gather *iotlb_gather)
-{
-	const struct iommu_domain_ops *ops = domain->ops;
-	size_t pgsize, count;
-
-	pgsize = iommu_pgsize(domain, iova, iova, size, &count);
-	return ops->unmap_pages ?
-	       ops->unmap_pages(domain, iova, pgsize, count, iotlb_gather) :
-	       ops->unmap(domain, iova, pgsize, iotlb_gather);
-}
-
 static size_t __iommu_unmap(struct iommu_domain *domain,
 			    unsigned long iova, size_t size,
 			    struct iommu_iotlb_gather *iotlb_gather)
@@ -2636,8 +2602,7 @@ static size_t __iommu_unmap(struct iommu_domain *domain,
 	unsigned long orig_iova = iova;
 	unsigned int min_pagesz;
 
-	if (unlikely(!(ops->unmap || ops->unmap_pages) ||
-		     domain->pgsize_bitmap == 0UL))
+	if (unlikely(!ops->unmap_pages || domain->pgsize_bitmap == 0UL))
 		return 0;
 
 	if (unlikely(!(domain->type & __IOMMU_DOMAIN_PAGING)))
@@ -2664,9 +2629,10 @@ static size_t __iommu_unmap(struct iommu_domain *domain,
 	 * or we hit an area that isn't mapped.
 	 */
 	while (unmapped < size) {
-		unmapped_page = __iommu_unmap_pages(domain, iova,
-						    size - unmapped,
-						    iotlb_gather);
+		size_t pgsize, count;
+
+		pgsize = iommu_pgsize(domain, iova, iova, size - unmapped, &count);
+		unmapped_page = ops->unmap_pages(domain, iova, pgsize, count, iotlb_gather);
 		if (!unmapped_page)
 			break;