From: David Woodhouse <d...@amazon.co.uk>
Signed-off-by: David Woodhouse <d...@amazon.co.uk>
---
drivers/iommu/amd/iommu.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 13d0a8f42d56..7ecebc5d255f 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -3590,6 +3590,24 @@ struct irq_remap_ops amd_iommu_irq_ops = {
.get_irq_domain = get_irq_domain,
};
+static int irq_remapping_select(struct irq_domain *d, struct irq_fwspec
*fwspec,
+ enum irq_domain_bus_token bus_token)
+{
+ struct amd_iommu *iommu;
+ int devid = -1;
+
+ if (x86_fwspec_is_ioapic(fwspec))
+ devid = get_ioapic_devid(fwspec->param[0]);
+ else if (x86_fwspec_is_ioapic(fwspec))
+ devid = get_hpet_devid(fwspec->param[0]);
+
+ if (devid < 0)
+ return 0;
+
+ iommu = amd_iommu_rlookup_table[devid];
+ return iommu && iommu->ir_domain == d;
+}
+
static void irq_remapping_prepare_irte(struct amd_ir_data *data,
struct irq_cfg *irq_cfg,
struct irq_alloc_info *info,
@@ -3813,6 +3831,7 @@ static void irq_remapping_deactivate(struct irq_domain
*domain,
}
static const struct irq_domain_ops amd_ir_domain_ops = {
+ .select = irq_remapping_select,
.alloc = irq_remapping_alloc,
.free = irq_remapping_free,
.activate = irq_remapping_activate,
--
2.26.2
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