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-rw-r--r--src/soc/intel/fsp_broadwell_de/include/soc/broadwell_de.h3
-rw-r--r--src/soc/intel/fsp_broadwell_de/vtd.c16
2 files changed, 17 insertions, 2 deletions
diff --git a/src/soc/intel/fsp_broadwell_de/include/soc/broadwell_de.h b/src/soc/intel/fsp_broadwell_de/include/soc/broadwell_de.h
index 50a402219a..edfeafc8a4 100644
--- a/src/soc/intel/fsp_broadwell_de/include/soc/broadwell_de.h
+++ b/src/soc/intel/fsp_broadwell_de/include/soc/broadwell_de.h
@@ -3,7 +3,7 @@
*
* Copyright (C) 2013 Google, Inc.
* Copyright (C) 2015-2016 Intel Corp.
- * Copyright (C) 2017 Siemens AG
+ * Copyright (C) 2017-2018 Siemens AG
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -21,6 +21,7 @@
#define VTBAR_OFFSET 0x180
#define VTBAR_MASK 0xffffe000
#define VTBAR_ENABLED 0x01
+#define VTBAR_SIZE 0x2000
#define SMM_FEATURE_CONTROL 0x58
#define SMM_CPU_SAVE_EN (1 << 1)
diff --git a/src/soc/intel/fsp_broadwell_de/vtd.c b/src/soc/intel/fsp_broadwell_de/vtd.c
index ad4a056dd1..e584cfa636 100644
--- a/src/soc/intel/fsp_broadwell_de/vtd.c
+++ b/src/soc/intel/fsp_broadwell_de/vtd.c
@@ -17,10 +17,24 @@
#include <device/pci_ids.h>
#include <soc/pci_devs.h>
#include <soc/acpi.h>
+#include <soc/broadwell_de.h>
+static void vtd_read_resources(struct device *dev)
+{
+ uint32_t vtbar;
+
+ /* Add fixed MMIO resource for VT-d which was set up by the FSP. */
+ vtbar = pci_read_config32(dev, VTBAR_OFFSET);
+ if (vtbar & VTBAR_ENABLED) {
+ mmio_resource(dev, VTBAR_OFFSET,
+ (vtbar & VTBAR_MASK) / KiB, VTBAR_SIZE / KiB);
+ }
+}
+
static struct device_operations vtd_ops = {
- .write_acpi_tables = vtd_write_acpi_tables,
+ .read_resources = vtd_read_resources,
+ .write_acpi_tables = vtd_write_acpi_tables,
};
static const struct pci_driver vtd_driver __pci_driver = {