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iommu/io-pgtable-arm-v7s: Implement arm_v7s_map_pages() 

Implement the map_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/1623850736-389584-14-git-send-email-quic_c_gdjako@quicinc.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Isaac J. Manjarres 2021-06-16 06:38:54 -07:00 committed by Joerg Roedel
parent f13eabcf9d
commit 23c30bed9c
1 changed files with 22 additions and 4 deletions
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26
drivers/iommu/io-pgtable-arm-v7s.c
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@ -519,11 +519,12 @@ static int __arm_v7s_map(struct arm_v7s_io_pgtable *data, unsigned long iova,
return __arm_v7s_map(data, iova, paddr, size, prot, lvl + 1, cptep, gfp);
}
static int arm_v7s_map(struct io_pgtable_ops *ops, unsigned long iova,
phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
static int arm_v7s_map_pages(struct io_pgtable_ops *ops, unsigned long iova,
phys_addr_t paddr, size_t pgsize, size_t pgcount,
int prot, gfp_t gfp, size_t *mapped)
{
struct arm_v7s_io_pgtable *data = io_pgtable_ops_to_data(ops);
int ret;
int ret = -EINVAL;
if (WARN_ON(iova >= (1ULL << data->iop.cfg.ias) ||
paddr >= (1ULL << data->iop.cfg.oas)))
@ -533,7 +534,17 @@ static int arm_v7s_map(struct io_pgtable_ops *ops, unsigned long iova,
if (!(prot & (IOMMU_READ | IOMMU_WRITE)))
return 0;
ret = __arm_v7s_map(data, iova, paddr, size, prot, 1, data->pgd, gfp);
while (pgcount--) {
ret = __arm_v7s_map(data, iova, paddr, pgsize, prot, 1, data->pgd,
gfp);
if (ret)
break;
iova += pgsize;
paddr += pgsize;
if (mapped)
*mapped += pgsize;
}
/*
* Synchronise all PTE updates for the new mapping before there's
* a chance for anything to kick off a table walk for the new iova.
@ -543,6 +554,12 @@ static int arm_v7s_map(struct io_pgtable_ops *ops, unsigned long iova,
return ret;
}
static int arm_v7s_map(struct io_pgtable_ops *ops, unsigned long iova,
phys_addr_t paddr, size_t size, int prot, gfp_t gfp)
{
return arm_v7s_map_pages(ops, iova, paddr, size, 1, prot, gfp, NULL);
}
static void arm_v7s_free_pgtable(struct io_pgtable *iop)
{
struct arm_v7s_io_pgtable *data = io_pgtable_to_data(iop);
@ -797,6 +814,7 @@ static struct io_pgtable *arm_v7s_alloc_pgtable(struct io_pgtable_cfg *cfg,
data->iop.ops = (struct io_pgtable_ops) {
.map = arm_v7s_map,
.map_pages = arm_v7s_map_pages,
.unmap = arm_v7s_unmap,
.unmap_pages = arm_v7s_unmap_pages,
.iova_to_phys = arm_v7s_iova_to_phys,