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

Preparatory for removing irq_remapping_get_irq_domain()

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-26-dwmw2@infradead.org

diff --git a/drivers/iommu/intel/irq_remapping.c b/drivers/iommu/intel/irq_remapping.c
index 96c84b19940e136d6c4de3a8ccc8bcccb24fc6cb..b3b079c0b51eedfd26c10e5c12c5a49c8e69c862 100644 (file)
--- a/drivers/iommu/intel/irq_remapping.c
+++ b/drivers/iommu/intel/irq_remapping.c
@@ -1431,7 +1431,20 @@ 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,