diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2024-02-26 13:07:24 -0400 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-02-29 15:12:22 +0000 |
| commit | 352bd64cd8288c5c6808735d52a75809dfef8635 (patch) | |
| tree | b5bb11b2cbc807428b1ef40ff9cb11434c77f8eb /drivers/iommu | |
| parent | 12dacfb5b938cdd90ced0109165eee9cb27061d9 (diff) | |
| download | linux-352bd64cd8288c5c6808735d52a75809dfef8635.tar.gz | |
iommu/arm-smmu-v3: Add a global static BLOCKED domain
Using the same design as the IDENTITY domain install an
STRTAB_STE_0_CFG_ABORT STE.
Reviewed-by: Michael Shavit <mshavit@google.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Moritz Fischer <moritzf@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/13-v6-96275f25c39d+2d4-smmuv3_newapi_p1_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 842ff8a95baa12..baec827e6ae446 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2674,6 +2674,24 @@ static struct iommu_domain arm_smmu_identity_domain = { .ops = &arm_smmu_identity_ops, }; +static int arm_smmu_attach_dev_blocked(struct iommu_domain *domain, + struct device *dev) +{ + struct arm_smmu_ste ste; + + arm_smmu_make_abort_ste(&ste); + return arm_smmu_attach_dev_ste(dev, &ste); +} + +static const struct iommu_domain_ops arm_smmu_blocked_ops = { + .attach_dev = arm_smmu_attach_dev_blocked, +}; + +static struct iommu_domain arm_smmu_blocked_domain = { + .type = IOMMU_DOMAIN_BLOCKED, + .ops = &arm_smmu_blocked_ops, +}; + 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) @@ -3064,6 +3082,7 @@ static void arm_smmu_remove_dev_pasid(struct device *dev, ioasid_t pasid) static struct iommu_ops arm_smmu_ops = { .identity_domain = &arm_smmu_identity_domain, + .blocked_domain = &arm_smmu_blocked_domain, .capable = arm_smmu_capable, .domain_alloc = arm_smmu_domain_alloc, .probe_device = arm_smmu_probe_device, |