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| author | Vasant Hegde <vasant.hegde@amd.com> | 2024-10-30 07:35:55 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-10-30 11:06:47 +0100 |
| commit | a0e086b16eca3fe58d30595b0b08d31f8ec7f74e (patch) | |
| tree | 5c1a6210fcad81d3c2ad6e206ffbbd5332eeb80c /drivers/iommu | |
| parent | iommu/amd: Reorder attach device code (diff) | |
| download | linux-a0e086b16eca3fe58d30595b0b08d31f8ec7f74e.tar.xz linux-a0e086b16eca3fe58d30595b0b08d31f8ec7f74e.zip | |
iommu/amd: Add ops->release_domain
In release path, remove device from existing domain and attach it to
blocked domain. So that all DMAs from device is blocked.
Note that soon blocked_domain will support other ops like
set_dev_pasid() but release_domain supports only attach_dev ops.
Hence added separate 'release_domain' variable.
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20241030063556.6104-12-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index a481c4565bc3..fd39b5457883 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -2515,6 +2515,14 @@ void amd_iommu_init_identity_domain(void) protection_domain_init(&identity_domain, NUMA_NO_NODE); } +/* Same as blocked domain except it supports only ops->attach_dev() */ +static struct iommu_domain release_domain = { + .type = IOMMU_DOMAIN_BLOCKED, + .ops = &(const struct iommu_domain_ops) { + .attach_dev = blocked_domain_attach_device, + } +}; + static int amd_iommu_attach_device(struct iommu_domain *dom, struct device *dev) { @@ -2894,6 +2902,7 @@ static int amd_iommu_dev_disable_feature(struct device *dev, const struct iommu_ops amd_iommu_ops = { .capable = amd_iommu_capable, .blocked_domain = &blocked_domain, + .release_domain = &release_domain, .identity_domain = &identity_domain.domain, .domain_alloc = amd_iommu_domain_alloc, .domain_alloc_user = amd_iommu_domain_alloc_user, |