diff options
| author | Vasant Hegde <vasant.hegde@amd.com> | 2024-04-18 13:33:57 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2024-04-26 13:16:04 +0300 |
| commit | c4cb23111103a841c2df30058597398443bcad5f (patch) | |
| tree | bbfd02bc3301b739d825fc4ef74df307d3722424 /scripts/lib | |
| parent | 978d626b8f1a239acc635323d731c77eae54eb61 (diff) | |
| download | linux-c4cb23111103a841c2df30058597398443bcad5f.tar.xz | |
iommu/amd: Add support for enable/disable IOPF
Return success from enable_feature(IOPF) path as this interface is going
away. Instead we will enable/disable IOPF support in attach/detach device
path.
In attach device path, if device is capable of PRI, then we will add it to
per IOMMU IOPF queue and enable PPR support in IOMMU. Also it will
attach device to domain even if it fails to enable PRI or add device to
IOPF queue as device can continue to work without PRI support.
In detach device patch it follows following sequence:
- Flush the queue for the given device
- Disable PPR support in DTE[devid]
- Remove device from IOPF queue
- Disable device PRI
Also add IOMMU_IOPF as dependency to AMD_IOMMU driver.
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/20240418103400.6229-13-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'scripts/lib')
0 files changed, 0 insertions, 0 deletions