diff options
| -rw-r--r-- | src/soc/intel/fsp_broadwell_de/include/soc/broadwell_de.h | 3 | ||||
| -rw-r--r-- | src/soc/intel/fsp_broadwell_de/vtd.c | 16 |
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 = { |