On Qualcomm machines, make use of the in-built MSI functionality in case

we don't have an msi-map pointing us to the GIC-MSI.  This enables MSIs
on the Snapdragon X Elite or the Lenovo x13s in case it's running an
unpatched DTB.

ok kettenis@

diff --git a/sys/dev/fdt/dwpcie.c b/sys/dev/fdt/dwpcie.c
index ef4cff3..7e6a075 100644 (file)
--- a/sys/dev/fdt/dwpcie.c
+++ b/sys/dev/fdt/dwpcie.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: dwpcie.c,v 1.54 2024/07/02 19:44:37 patrick Exp $     */
+/*     $OpenBSD: dwpcie.c,v 1.55 2024/07/05 22:52:25 patrick Exp $     */
 /*
  * Copyright (c) 2018 Mark Kettenis <kettenis@openbsd.org>
  *
@@ -1505,6 +1505,9 @@ dwpcie_sc8280xp_init(struct dwpcie_softc *sc)
 {
        sc->sc_num_viewport = 8;
 
+       if (OF_getproplen(sc->sc_node, "msi-map") <= 0)
+               return dwpcie_msi_init(sc);
+
        return 0;
 }