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iommu/ipmmu-vmsa: Convert to generic_single_device_group()

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Use the new helper.

This driver is kind of weird since in ARM mode it pretends it has
per-device groups, but ARM64 mode does not.

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/6-v1-c869a95191f2+5e8-iommu_single_grp_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Jason Gunthorpe 2023-08-22 13:16:01 -03:00 committed by Joerg Roedel
parent ef0f48c6be
commit 8f68911efc
1 changed files with 5 additions and 17 deletions
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22
drivers/iommu/ipmmu-vmsa.c
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@ -64,7 +64,6 @@ struct ipmmu_vmsa_device {
struct ipmmu_vmsa_domain *domains[IPMMU_CTX_MAX];
s8 utlb_ctx[IPMMU_UTLB_MAX];
struct iommu_group *group;
struct dma_iommu_mapping *mapping;
};
@ -872,29 +871,18 @@ static void ipmmu_release_device(struct device *dev)
arm_iommu_release_mapping(mmu->mapping);
}
static struct iommu_group *ipmmu_find_group(struct device *dev)
{
struct ipmmu_vmsa_device *mmu = to_ipmmu(dev);
struct iommu_group *group;
if (mmu->group)
return iommu_group_ref_get(mmu->group);
group = iommu_group_alloc();
if (!IS_ERR(group))
mmu->group = group;
return group;
}
static const struct iommu_ops ipmmu_ops = {
.identity_domain = &ipmmu_iommu_identity_domain,
.domain_alloc_paging = ipmmu_domain_alloc_paging,
.probe_device = ipmmu_probe_device,
.release_device = ipmmu_release_device,
.probe_finalize = ipmmu_probe_finalize,
/*
* FIXME: The device grouping is a fixed property of the hardware's
* ability to isolate and control DMA, it should not depend on kconfig.
*/
.device_group = IS_ENABLED(CONFIG_ARM) && !IS_ENABLED(CONFIG_IOMMU_DMA)
? generic_device_group : ipmmu_find_group,
? generic_device_group : generic_single_device_group,
.pgsize_bitmap = SZ_1G | SZ_2M | SZ_4K,
.of_xlate = ipmmu_of_xlate,
.default_domain_ops = &(const struct iommu_domain_ops) {