diff options
| -rw-r--r-- | arch/x86/kernel/apic/msi.c | 2 | ||||
| -rw-r--r-- | drivers/iommu/intel/iommu.h | 1 | ||||
| -rw-r--r-- | drivers/iommu/intel/irq_remapping.c | 27 | ||||
| -rw-r--r-- | include/linux/irqdomain_defs.h | 1 |
4 files changed, 15 insertions, 16 deletions
diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c index db96bfcf61a3..a8dccb0f8c74 100644 --- a/arch/x86/kernel/apic/msi.c +++ b/arch/x86/kernel/apic/msi.c @@ -217,6 +217,8 @@ static bool x86_init_dev_msi_info(struct device *dev, struct irq_domain *domain, /* See msi_set_affinity() for the gory details */ info->flags |= MSI_FLAG_NOMASK_QUIRK; break; + case DOMAIN_BUS_DMAR: + break; default: WARN_ON_ONCE(1); return false; diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h index 92023dff9513..6eadb86b9d19 100644 --- a/drivers/iommu/intel/iommu.h +++ b/drivers/iommu/intel/iommu.h @@ -600,7 +600,6 @@ struct intel_iommu { #ifdef CONFIG_IRQ_REMAP struct ir_table *ir_table; /* Interrupt remapping info */ struct irq_domain *ir_domain; - struct irq_domain *ir_msi_domain; #endif struct iommu_device iommu; /* IOMMU core code handle */ int node; diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c index 08bbf08f4b03..6fab4076a9e2 100644 --- a/drivers/iommu/intel/irq_remapping.c +++ b/drivers/iommu/intel/irq_remapping.c @@ -82,6 +82,7 @@ static const struct irq_domain_ops intel_ir_domain_ops; static void iommu_disable_irq_remapping(struct intel_iommu *iommu); static int __init parse_ioapics_under_ir(void); +static const struct msi_parent_ops dmar_msi_parent_ops; static bool ir_pre_enabled(struct intel_iommu *iommu) { @@ -230,7 +231,7 @@ static struct irq_domain *map_dev_to_ir(struct pci_dev *dev) { struct dmar_drhd_unit *drhd = dmar_find_matched_drhd_unit(dev); - return drhd ? drhd->iommu->ir_msi_domain : NULL; + return drhd ? drhd->iommu->ir_domain : NULL; } static int clear_entries(struct irq_2_iommu *irq_iommu) @@ -573,10 +574,10 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu) pr_err("IR%d: failed to allocate irqdomain\n", iommu->seq_id); goto out_free_fwnode; } - iommu->ir_msi_domain = - arch_create_remap_msi_irq_domain(iommu->ir_domain, - "INTEL-IR-MSI", - iommu->seq_id); + + irq_domain_update_bus_token(iommu->ir_domain, DOMAIN_BUS_DMAR); + iommu->ir_domain->flags |= IRQ_DOMAIN_FLAG_MSI_PARENT; + iommu->ir_domain->msi_parent_ops = &dmar_msi_parent_ops; ir_table->base = page_address(pages); ir_table->bitmap = bitmap; @@ -620,9 +621,6 @@ static int intel_setup_irq_remapping(struct intel_iommu *iommu) return 0; out_free_ir_domain: - if (iommu->ir_msi_domain) - irq_domain_remove(iommu->ir_msi_domain); - iommu->ir_msi_domain = NULL; irq_domain_remove(iommu->ir_domain); iommu->ir_domain = NULL; out_free_fwnode: @@ -644,13 +642,6 @@ static void intel_teardown_irq_remapping(struct intel_iommu *iommu) struct fwnode_handle *fn; if (iommu && iommu->ir_table) { - if (iommu->ir_msi_domain) { - fn = iommu->ir_msi_domain->fwnode; - - irq_domain_remove(iommu->ir_msi_domain); - irq_domain_free_fwnode(fn); - iommu->ir_msi_domain = NULL; - } if (iommu->ir_domain) { fn = iommu->ir_domain->fwnode; @@ -1437,6 +1428,12 @@ static const struct irq_domain_ops intel_ir_domain_ops = { .deactivate = intel_irq_remapping_deactivate, }; +static const struct msi_parent_ops dmar_msi_parent_ops = { + .supported_flags = X86_VECTOR_MSI_FLAGS_SUPPORTED | MSI_FLAG_MULTI_PCI_MSI, + .prefix = "IR-", + .init_dev_msi_info = msi_parent_init_dev_msi_info, +}; + /* * Support of Interrupt Remapping Unit Hotplug */ diff --git a/include/linux/irqdomain_defs.h b/include/linux/irqdomain_defs.h index b3f4b7ef31f1..3a09396ac88d 100644 --- a/include/linux/irqdomain_defs.h +++ b/include/linux/irqdomain_defs.h @@ -23,6 +23,7 @@ enum irq_domain_bus_token { DOMAIN_BUS_VMD_MSI, DOMAIN_BUS_PCI_DEVICE_MSI, DOMAIN_BUS_PCI_DEVICE_MSIX, + DOMAIN_BUS_DMAR, }; #endif /* _LINUX_IRQDOMAIN_DEFS_H */ |