1 files changed, 12 insertions, 0 deletions
diff --git a/Kernel/Bus/PCI/DeviceIdentifier.cpp b/Kernel/Bus/PCI/DeviceIdentifier.cpp
index 785dfebff8..ee07737402 100644
--- a/Kernel/Bus/PCI/DeviceIdentifier.cpp
+++ b/Kernel/Bus/PCI/DeviceIdentifier.cpp
@@ -17,4 +17,16 @@ ErrorOr<NonnullRefPtr<DeviceIdentifier>> DeviceIdentifier::from_enumerable_ident
     return adopt_nonnull_ref_or_enomem(new (nothrow) DeviceIdentifier(other_identifier));
 }
 
+void DeviceIdentifier::initialize()
+{
+    for (auto cap : capabilities()) {
+        if (cap.id() == PCI::Capabilities::ID::MSIX) {
+            auto msix_bir_bar = (cap.read8(4) & msix_table_bir_mask);
+            auto msix_bir_offset = (cap.read32(4) & msix_table_offset_mask);
+            auto msix_count = (cap.read16(2) & msix_control_table_mask) + 1;
+            m_msix_info = MSIxInfo(msix_count, msix_bir_bar, msix_bir_offset);
+        }
+    }
+}
+
 }