diff mbox series

[09/12] iommu/vt-d: Add DEV-MSI support

Message ID 1612385805-3412-10-git-send-email-megha.dey@intel.com
State New
Headers show
Series Introduce dev-msi and interrupt message store | expand

Commit Message

Dey, Megha Feb. 3, 2021, 8:56 p.m. UTC 
Add required support in the interrupt remapping driver for devices
which generate dev-msi interrupts and use the intel remapping
domain as the parent domain. Set the source-id of all dev-msi
interrupt requests to the parent PCI device associated with it.

Reviewed-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Megha Dey <megha.dey@intel.com>
---
 drivers/iommu/intel/irq_remapping.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c
index 685200a..18f1b53 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1278,6 +1278,9 @@  static void intel_irq_remapping_prepare_irte(struct intel_ir_data *data,
 	case X86_IRQ_ALLOC_TYPE_PCI_MSIX:
 		set_msi_sid(irte, msi_desc_to_pci_dev(info->desc));
 		break;
+	case X86_IRQ_ALLOC_TYPE_DEV_MSI:
+		set_msi_sid(irte, to_pci_dev(info->desc->dev->parent));
+		break;
 	default:
 		BUG_ON(1);
 		break;
@@ -1321,7 +1324,8 @@  static int intel_irq_remapping_alloc(struct irq_domain *domain,
 	if (!info || !iommu)
 		return -EINVAL;
 	if (nr_irqs > 1 && info->type != X86_IRQ_ALLOC_TYPE_PCI_MSI &&
-	    info->type != X86_IRQ_ALLOC_TYPE_PCI_MSIX)
+	    info->type != X86_IRQ_ALLOC_TYPE_PCI_MSIX &&
+	    info->type != X86_IRQ_ALLOC_TYPE_DEV_MSI)
 		return -EINVAL;
 
 	/*