mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-06 08:46:46 +00:00
iommu/io-pgtable-arm-v7s: Implement arm_v7s_unmap_pages()
Implement the unmap_pages() callback for the ARM v7s io-pgtable format. Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org> Signed-off-by: Georgi Djakov <quic_c_gdjako@quicinc.com> Link: https://lore.kernel.org/r/1623850736-389584-13-git-send-email-quic_c_gdjako@quicinc.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
parent
4a77b12deb
commit
f13eabcf9d
1 changed files with 21 additions and 3 deletions
|
@ -710,15 +710,32 @@ static size_t __arm_v7s_unmap(struct arm_v7s_io_pgtable *data,
|
|||
return __arm_v7s_unmap(data, gather, iova, size, lvl + 1, ptep);
|
||||
}
|
||||
|
||||
static size_t arm_v7s_unmap(struct io_pgtable_ops *ops, unsigned long iova,
|
||||
size_t size, struct iommu_iotlb_gather *gather)
|
||||
static size_t arm_v7s_unmap_pages(struct io_pgtable_ops *ops, unsigned long iova,
|
||||
size_t pgsize, size_t pgcount,
|
||||
struct iommu_iotlb_gather *gather)
|
||||
{
|
||||
struct arm_v7s_io_pgtable *data = io_pgtable_ops_to_data(ops);
|
||||
size_t unmapped = 0, ret;
|
||||
|
||||
if (WARN_ON(iova >= (1ULL << data->iop.cfg.ias)))
|
||||
return 0;
|
||||
|
||||
return __arm_v7s_unmap(data, gather, iova, size, 1, data->pgd);
|
||||
while (pgcount--) {
|
||||
ret = __arm_v7s_unmap(data, gather, iova, pgsize, 1, data->pgd);
|
||||
if (!ret)
|
||||
break;
|
||||
|
||||
unmapped += pgsize;
|
||||
iova += pgsize;
|
||||
}
|
||||
|
||||
return unmapped;
|
||||
}
|
||||
|
||||
static size_t arm_v7s_unmap(struct io_pgtable_ops *ops, unsigned long iova,
|
||||
size_t size, struct iommu_iotlb_gather *gather)
|
||||
{
|
||||
return arm_v7s_unmap_pages(ops, iova, size, 1, gather);
|
||||
}
|
||||
|
||||
static phys_addr_t arm_v7s_iova_to_phys(struct io_pgtable_ops *ops,
|
||||
|
@ -781,6 +798,7 @@ static struct io_pgtable *arm_v7s_alloc_pgtable(struct io_pgtable_cfg *cfg,
|
|||
data->iop.ops = (struct io_pgtable_ops) {
|
||||
.map = arm_v7s_map,
|
||||
.unmap = arm_v7s_unmap,
|
||||
.unmap_pages = arm_v7s_unmap_pages,
|
||||
.iova_to_phys = arm_v7s_iova_to_phys,
|
||||
};
|
||||
|
||||
|
|
Loading…
Reference in a new issue