diff options
| author | Wei Huang <wei.huang2@amd.com> | 2024-04-18 10:33:48 +0000 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-04-26 12:15:57 +0200 |
| commit | db44bd517ff2de4224fdb0e9c0db426572f9fa11 (patch) | |
| tree | bd887ece8a0c9871d143572f7758d0ea507469ee /drivers/iommu/amd/iommu.c | |
| parent | c5ebd09625391000026b0860952e05d0f7fc4519 (diff) | |
iommu/amd: Add support for enabling/disabling IOMMU features
Add support for struct iommu_ops.dev_{enable/disable}_feat. Please note
that the empty feature switches will be populated by subsequent patches.
Signed-off-by: Wei Huang <wei.huang2@amd.com>
Co-developed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20240418103400.6229-4-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd/iommu.c')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 394623abbaa4..a22ecd8479db 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2791,6 +2791,32 @@ static const struct iommu_dirty_ops amd_dirty_ops = { .read_and_clear_dirty = amd_iommu_read_and_clear_dirty, }; +static int amd_iommu_dev_enable_feature(struct device *dev, + enum iommu_dev_features feat) +{ + int ret; + + switch (feat) { + default: + ret = -EINVAL; + break; + } + return ret; +} + +static int amd_iommu_dev_disable_feature(struct device *dev, + enum iommu_dev_features feat) +{ + int ret; + + switch (feat) { + default: + ret = -EINVAL; + break; + } + return ret; +} + const struct iommu_ops amd_iommu_ops = { .capable = amd_iommu_capable, .domain_alloc = amd_iommu_domain_alloc, @@ -2803,6 +2829,8 @@ const struct iommu_ops amd_iommu_ops = { .is_attach_deferred = amd_iommu_is_attach_deferred, .pgsize_bitmap = AMD_IOMMU_PGSIZES, .def_domain_type = amd_iommu_def_domain_type, + .dev_enable_feat = amd_iommu_dev_enable_feature, + .dev_disable_feat = amd_iommu_dev_disable_feature, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = amd_iommu_attach_device, .map_pages = amd_iommu_map_pages, |