[src/trunk]: src/sys/arch/arm/acpi Force a matching com@puc by seg/bus/dev/fu...

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

details:   https://anonhg.NetBSD.org/src/rev/b720becdbe22
branches:  trunk
changeset: 446268:b720becdbe22
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Wed Nov 28 22:29:36 2018 +0000

description:
Force a matching com@puc by seg/bus/dev/func to be the console device if specified in SPCR

diffstat:

 sys/arch/arm/acpi/acpi_platform.c |  39 +++++++++++++++++++++++++++++++++++++--
 1 files changed, 37 insertions(+), 2 deletions(-)

diffs (67 lines):

diff -r a314a7e9c40f -r b720becdbe22 sys/arch/arm/acpi/acpi_platform.c
--- a/sys/arch/arm/acpi/acpi_platform.c Wed Nov 28 22:28:46 2018 +0000
+++ b/sys/arch/arm/acpi/acpi_platform.c Wed Nov 28 22:29:36 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: acpi_platform.c,v 1.9 2018/11/28 03:17:13 jmcneill Exp $ */
+/* $NetBSD: acpi_platform.c,v 1.10 2018/11/28 22:29:36 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2018 The NetBSD Foundation, Inc.
@@ -34,7 +34,7 @@
 #include "opt_efi.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_platform.c,v 1.9 2018/11/28 03:17:13 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_platform.c,v 1.10 2018/11/28 22:29:36 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -64,6 +64,12 @@
 #include <dev/ic/comreg.h>
 #include <dev/ic/comvar.h>
 
+#if NCOM > 0
+#include <dev/pci/pcireg.h>
+#include <dev/pci/pcivar.h>
+#include <dev/pci/pucvar.h>
+#endif
+
 #ifdef EFI_RUNTIME
 #include <arm/arm/efi_runtime.h>
 #endif
@@ -223,6 +229,35 @@
 static void
 acpi_platform_device_register(device_t self, void *aux)
 {
+#if NCOM > 0
+       prop_dictionary_t prop = device_properties(self);
+
+       if (device_is_a(self, "com") && device_is_a(device_parent(self), "puc")) {
+               const struct puc_attach_args * const paa = aux;
+               ACPI_TABLE_SPCR *spcr;
+               int b, d, f;
+
+               const int s = pci_get_segment(paa->pc);
+               pci_decompose_tag(paa->pc, paa->tag, &b, &d, &f);
+
+               if (ACPI_FAILURE(acpi_table_find(ACPI_SIG_SPCR, (void **)&spcr)))
+                       return;
+               if (spcr->SerialPort.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY)
+                       goto spcr_unmap;
+               if (spcr->SerialPort.Address == 0)
+                       goto spcr_unmap;
+               if (spcr->InterfaceType != ACPI_DBG2_16550_COMPATIBLE &&
+                   spcr->InterfaceType != ACPI_DBG2_16550_SUBSET)
+                       goto spcr_unmap;
+
+               if (spcr->PciSegment == s && spcr->PciBus == b &&
+                   spcr->PciDevice == d && spcr->PciFunction == f)
+                       prop_dictionary_set_bool(prop, "force_console", true);
+
+spcr_unmap:
+               acpi_table_unmap((ACPI_TABLE_HEADER *)spcr);
+       }
+#endif
 }
 
 static void