IOAPIC interrupts need this. Let's be prepared.
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
---
lib/x86/intel-iommu.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/lib/x86/intel-iommu.c b/lib/x86/intel-iommu.c
index a3ce678..0585248 100644
--- a/lib/x86/intel-iommu.c
+++ b/lib/x86/intel-iommu.c
@@ -250,13 +250,13 @@ static uint16_t vtd_intr_index_alloc(void)
}
static void vtd_setup_irte(struct pci_dev *dev, vtd_irte_t *irte,
- int vector, int dest_id)
+ int vector, int dest_id, trigger_mode_t trigger)
{
assert(sizeof(vtd_irte_t) == 16);
memset(irte, 0, sizeof(*irte));
irte->fault_disable = 1;
irte->dest_mode = 0; /* physical */
- irte->trigger_mode = 0; /* edge */
+ irte->trigger_mode = trigger;
irte->delivery_mode = 0; /* fixed */
irte->irte_mode = 0; /* remapped */
irte->vector = vector;
@@ -301,7 +301,9 @@ bool vtd_setup_msi(struct pci_dev *dev, int vector, int dest_id)
assert(sizeof(vtd_msi_addr_t) == 8);
assert(sizeof(vtd_msi_data_t) == 4);
- vtd_setup_irte(dev, irte + index, vector, dest_id);
+ /* Use edge irq as default */
+ vtd_setup_irte(dev, irte + index, vector,
+ dest_id, TRIGGER_EDGE);
msi_addr.handle_15 = index >> 15 & 1;
msi_addr.shv = 0;
--
2.7.4
--
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