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FROMLIST: iommu/arm-smmu: Implement the map_pages() IOMMU driver callback

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Implement the map_pages() callback for the ARM SMMU driver
to allow calls from iommu_map to map multiple pages of
the same size in one call. Also, remove the map() callback
for the ARM SMMU driver, as it will no longer be used.

Bug: 178537788
Change-Id: Ie35bd1842da60e4b63b0acad37a6cd095dcfea9d
Link: https://lore.kernel.org/linux-iommu/20210408171402.12607-1-isaacm@codeaurora.org/T/#t
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
Suggested-by: Will Deacon <will@kernel.org>
This commit is contained in:
Isaac J. Manjarres
2021-04-01 17:38:12 -07:00
committed by Todd Kjos
parent 8bc46bd74b
commit 28949c3e70
1 changed files with 5 additions and 4 deletions
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9
drivers/iommu/arm/arm-smmu/arm-smmu.c
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@@ -1199,8 +1199,9 @@ rpm_put:
return ret;
}
static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
static int arm_smmu_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)
{
struct io_pgtable_ops *ops = to_smmu_domain(domain)->pgtbl_ops;
struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu;
@@ -1210,7 +1211,7 @@ static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova,
return -ENODEV;
arm_smmu_rpm_get(smmu);
ret = ops->map(ops, iova, paddr, size, prot, gfp);
ret = ops->map_pages(ops, iova, paddr, pgsize, pgcount, prot, gfp, mapped);
arm_smmu_rpm_put(smmu);
return ret;
@@ -1609,7 +1610,7 @@ static struct iommu_ops arm_smmu_ops = {
.domain_alloc = arm_smmu_domain_alloc,
.domain_free = arm_smmu_domain_free,
.attach_dev = arm_smmu_attach_dev,
.map = arm_smmu_map,
.map_pages = arm_smmu_map_pages,
.unmap_pages = arm_smmu_unmap_pages,
.flush_iotlb_all = arm_smmu_flush_iotlb_all,
.iotlb_sync = arm_smmu_iotlb_sync,