From: David Woodhouse <dwmw@amazon.co.uk>
Date: Mon, 12 Oct 2020 15:45:47 +0000 (+0100)
Subject: iommu/vt-d: Implement select() method on remapping irqdomain
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f6a525d4784a922b0f91a6bb80f50286896e656a;p=users%2Fdwmw2%2Flinux.git

iommu/vt-d: Implement select() method on remapping irqdomain

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---

diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c
index 511dfb4884bc7..40c2fec122b8c 100644
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1435,7 +1435,20 @@ static void intel_irq_remapping_deactivate(struct irq_domain *domain,
 	modify_irte(&data->irq_2_iommu, &entry);
 }
 
+static int intel_irq_remapping_select(struct irq_domain *d,
+				      struct irq_fwspec *fwspec,
+				      enum irq_domain_bus_token bus_token)
+{
+	if (x86_fwspec_is_ioapic(fwspec))
+		return d == map_ioapic_to_ir(fwspec->param[0]);
+	else if (x86_fwspec_is_hpet(fwspec))
+		return d == map_hpet_to_ir(fwspec->param[0]);
+
+	return 0;
+}
+
 static const struct irq_domain_ops intel_ir_domain_ops = {
+	.select = intel_irq_remapping_select,
 	.alloc = intel_irq_remapping_alloc,
 	.free = intel_irq_remapping_free,
 	.activate = intel_irq_remapping_activate,