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| author | Jason Gunthorpe <jgg@nvidia.com> | 2023-08-22 13:16:01 -0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-09-25 11:51:07 +0200 |
| commit | 8f68911efc16feba1faf073ebea53f6a5b363e7c (patch) | |
| tree | 621b411dfa3f266f986c3b5b10f38b6add9dfd27 /drivers/iommu | |
| parent | ef0f48c6be822ead31465d17a429174d56300cf8 (diff) | |
| download | linux-stable-8f68911efc16feba1faf073ebea53f6a5b363e7c.tar.gz linux-stable-8f68911efc16feba1faf073ebea53f6a5b363e7c.tar.bz2 linux-stable-8f68911efc16feba1faf073ebea53f6a5b363e7c.zip | |
iommu/ipmmu-vmsa: Convert to generic_single_device_group()
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>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/ipmmu-vmsa.c | 22 |
1 files changed, 5 insertions, 17 deletions
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c index eaabae761577..ace1fc4bd34b 100644 --- a/drivers/iommu/ipmmu-vmsa.c +++ b/drivers/iommu/ipmmu-vmsa.c @@ -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) { |