[src/trunk]: src/sys/arch/arm/acpi Add "nopcimsi" boot option to force legacy...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3d94b3fdafbc
branches:  trunk
changeset: 368940:3d94b3fdafbc
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Aug 13 20:08:36 2022 +0000

description:
Add "nopcimsi" boot option to force legacy INTx only mode.

diffstat:

 sys/arch/arm/acpi/acpipchb.c |  9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diffs (37 lines):

diff -r 2f3e895eff0a -r 3d94b3fdafbc sys/arch/arm/acpi/acpipchb.c
--- a/sys/arch/arm/acpi/acpipchb.c      Sat Aug 13 20:07:13 2022 +0000
+++ b/sys/arch/arm/acpi/acpipchb.c      Sat Aug 13 20:08:36 2022 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: acpipchb.c,v 1.29 2022/08/13 16:44:11 jmcneill Exp $ */
+/* $NetBSD: acpipchb.c,v 1.30 2022/08/13 20:08:36 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpipchb.c,v 1.29 2022/08/13 16:44:11 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpipchb.c,v 1.30 2022/08/13 20:08:36 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -127,6 +127,7 @@
        ACPI_INTEGER seg, nomsi;
        ACPI_STATUS rv;
        uint16_t bus_start;
+       int val;
 
        sc->sc_dev = self;
        sc->sc_memt = aa->aa_memt;
@@ -153,6 +154,10 @@
            &nomsi))) {
                nomsi = 0;
        }
+       if (get_bootconf_option(boot_args, "nopcimsi",
+                               BOOTOPT_TYPE_BOOLEAN, &val) && val) {
+               nomsi = 1;
+       }
 
        aprint_naive("\n");
        aprint_normal(": PCI Express Host Bridge\n");