[src/trunk]: src/sys/arch/arm/apple Support new style msi-ranges from U-Boot

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

details:   https://anonhg.NetBSD.org/src/rev/ae8f415985cd
branches:  trunk
changeset: 1023547:ae8f415985cd
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Tue Sep 14 01:33:19 2021 +0000

description:
Support new style msi-ranges from U-Boot

diffstat:

 sys/arch/arm/apple/apple_pcie.c |  19 ++++++++++++++-----
 1 files changed, 14 insertions(+), 5 deletions(-)

diffs (44 lines):

diff -r 65df0b36d782 -r ae8f415985cd sys/arch/arm/apple/apple_pcie.c
--- a/sys/arch/arm/apple/apple_pcie.c   Mon Sep 13 23:31:23 2021 +0000
+++ b/sys/arch/arm/apple/apple_pcie.c   Tue Sep 14 01:33:19 2021 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: apple_pcie.c,v 1.4 2021/09/13 23:30:05 jmcneill Exp $ */
+/* $NetBSD: apple_pcie.c,v 1.5 2021/09/14 01:33:19 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2021 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: apple_pcie.c,v 1.4 2021/09/13 23:30:05 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: apple_pcie.c,v 1.5 2021/09/14 01:33:19 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/device.h>
@@ -504,13 +504,22 @@
        int len;
 
        const u_int *data = fdtbus_get_prop(phandle, "msi-ranges", &len);
-       if (len != 8) {
+       switch (len) {
+       case 8:
+               /* two cells: start and count */
+               sc->sc_msi_start = be32toh(data[0]);
+               sc->sc_nmsi = be32toh(data[1]);
+               break;
+       case 20:
+               /* 5 cells: xref, specifier (3 cells), and count */
+               sc->sc_msi_start = be32toh(data[2]);
+               sc->sc_nmsi = be32toh(data[4]);
+               break;
+       default:
                aprint_error_dev(sc->sc_pcihost.sc_dev,
                    "WARNING: bad msi-ranges property, MSI not enabled!\n");
                return ENXIO;
        }
-       sc->sc_msi_start = be32toh(data[0]);
-       sc->sc_nmsi = be32toh(data[1]);
        sc->sc_msi_pa = kmem_zalloc(sizeof(*sc->sc_msi_pa) * sc->sc_nmsi,
            KM_SLEEP);
        sc->sc_msi_ih = kmem_zalloc(sizeof(*sc->sc_msi_ih) * sc->sc_nmsi,