diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2022-11-25 02:26:36 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-12-06 00:22:35 +0300 |
| commit | fa5745aca1dc819aee6463a2475b5c277f7cf8f6 (patch) | |
| tree | f41370fcf8fde8dc2b8f270102e2b78d6733ae7b /drivers/iommu | |
| parent | 810531a1af5393f010d6508b1cb48e6650fc5e8f (diff) | |
| download | linux-fa5745aca1dc819aee6463a2475b5c277f7cf8f6.tar.xz | |
iommu/amd: Enable PCI/IMS
PCI/IMS works like PCI/MSI-X in the remapping. Just add the feature flag,
but only when on real hardware.
Virtualized IOMMUs need additional support.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20221124232327.140571546@linutronix.de
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd/iommu.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c index 7caccd8996f9..4d28967f910d 100644 --- a/drivers/iommu/amd/iommu.c +++ b/drivers/iommu/amd/iommu.c @@ -3649,11 +3649,20 @@ static struct irq_chip amd_ir_chip = { }; static const struct msi_parent_ops amdvi_msi_parent_ops = { - .supported_flags = X86_VECTOR_MSI_FLAGS_SUPPORTED | MSI_FLAG_MULTI_PCI_MSI, + .supported_flags = X86_VECTOR_MSI_FLAGS_SUPPORTED | + MSI_FLAG_MULTI_PCI_MSI | + MSI_FLAG_PCI_IMS, .prefix = "IR-", .init_dev_msi_info = msi_parent_init_dev_msi_info, }; +static const struct msi_parent_ops virt_amdvi_msi_parent_ops = { + .supported_flags = X86_VECTOR_MSI_FLAGS_SUPPORTED | + MSI_FLAG_MULTI_PCI_MSI, + .prefix = "vIR-", + .init_dev_msi_info = msi_parent_init_dev_msi_info, +}; + int amd_iommu_create_irq_domain(struct amd_iommu *iommu) { struct fwnode_handle *fn; @@ -3670,7 +3679,11 @@ int amd_iommu_create_irq_domain(struct amd_iommu *iommu) irq_domain_update_bus_token(iommu->ir_domain, DOMAIN_BUS_AMDVI); iommu->ir_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT; - iommu->ir_domain->msi_parent_ops = &amdvi_msi_parent_ops; + + if (amd_iommu_np_cache) + iommu->ir_domain->msi_parent_ops = &virt_amdvi_msi_parent_ops; + else + iommu->ir_domain->msi_parent_ops = &amdvi_msi_parent_ops; return 0; } |