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fsp_broadwell_de: Move DMAR table generation to corresponding VT-d device 

The DMAR table generation depends on the VT-d feature which is
implemented in its own PCI device located in PCI:00:05.0 for
Broadwell-DE. Add a new PCI driver for this device and move
DMAR table generation to this device driver.

Change-Id: I103257c73f5e745e996a441a2535b885270bc204
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/28671
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
This commit is contained in:
Werner Zeh 2018-09-19 08:06:54 +02:00 committed by Philipp Deppenwiese
parent 5a0b252ded
commit ca0c8e75f9
6 changed files with 40 additions and 10 deletions
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1
src/soc/intel/fsp_broadwell_de/Makefile.inc
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@ -34,6 +34,7 @@ ramstage-y += gpio.c
ramstage-y += iou_complto.c
ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smmrelocate.c
ramstage-$(CONFIG_HAVE_SMI_HANDLER) += pmutil.c
ramstage-y += vtd.c
smm-$(CONFIG_HAVE_SMI_HANDLER) += pmutil.c
smm-$(CONFIG_HAVE_SMI_HANDLER) += smihandler.c
smm-$(CONFIG_HAVE_SMI_HANDLER) += tsc_freq.c

7
src/soc/intel/fsp_broadwell_de/acpi.c
View File

@ -4,7 +4,7 @@
* Copyright (C) 2007-2009 coresystems GmbH
* Copyright (C) 2013 Google Inc.
* Copyright (C) 2015-2016 Intel Corp.
* Copyright (C) 2016 Siemens AG
* Copyright (C) 2016-2018 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
@ -390,15 +390,14 @@ static unsigned long acpi_fill_dmar(unsigned long current)
return current;
}
unsigned long northcluster_write_acpi_tables(struct device *const dev,
unsigned long vtd_write_acpi_tables(struct device *const dev,
unsigned long current,
struct acpi_rsdp *const rsdp)
{
acpi_dmar_t *const dmar = (acpi_dmar_t *)current;
struct device *vtdev = dev_find_slot(0, PCI_DEVFN(5, 0));
/* Create DMAR table only if virtualization is enabled */
if (!(pci_read_config32(vtdev, 0x180) & 0x01))
if (!(pci_read_config32(dev, VTBAR_OFFSET) & VTBAR_ENABLED))
return current;
printk(BIOS_DEBUG, "ACPI: * DMAR\n");

8
src/soc/intel/fsp_broadwell_de/include/soc/acpi.h
View File

@ -3,7 +3,7 @@
*
* Copyright (C) 2013 Google, Inc.
* Copyright (C) 2015-2016 Intel Corp.
* Copyright (C) 2016 Siemens AG
* Copyright (C) 2016-2018 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
@ -24,8 +24,8 @@ void acpi_create_intel_hpet(acpi_hpet_t *hpet);
void acpi_fill_in_fadt(acpi_fadt_t *fadt, acpi_facs_t *facs, void *dsdt);
unsigned long acpi_madt_irq_overrides(unsigned long current);
uint16_t get_pmbase(void);
unsigned long northcluster_write_acpi_tables(struct device *const dev,
unsigned long current,
struct acpi_rsdp *const rsdp);
unsigned long vtd_write_acpi_tables(struct device *const dev,
unsigned long current,
struct acpi_rsdp *const rsdp);
#endif /* _SOC_ACPI_H_ */

1
src/soc/intel/fsp_broadwell_de/include/soc/broadwell_de.h
View File

@ -20,6 +20,7 @@
#define VTBAR_OFFSET 0x180
#define VTBAR_MASK 0xffffe000
#define VTBAR_ENABLED 0x01
#define SMM_FEATURE_CONTROL 0x58
#define SMM_CPU_SAVE_EN (1 << 1)

3
src/soc/intel/fsp_broadwell_de/northcluster.c
View File

@ -3,7 +3,7 @@
*
* Copyright (C) 2013 Google Inc.
* Copyright (C) 2015-2016 Intel Corp.
* Copyright (C) 2016 Siemens AG
* Copyright (C) 2016-2018 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
@ -137,7 +137,6 @@ static void nc_enable(struct device *dev)
static struct device_operations nc_ops = {
.read_resources = nc_read_resources,
.acpi_fill_ssdt_generator = generate_cpu_entries,
.write_acpi_tables = northcluster_write_acpi_tables,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = NULL,

30
src/soc/intel/fsp_broadwell_de/vtd.c Normal file
View File

@ -0,0 +1,30 @@
/*
* This file is part of the coreboot project.
*
* Copyright (C) 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
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <device/pci.h>
#include <device/pci_ids.h>
#include <soc/pci_devs.h>
#include <soc/acpi.h>
static struct device_operations vtd_ops = {
.write_acpi_tables = vtd_write_acpi_tables,
};
static const struct pci_driver vtd_driver __pci_driver = {
.ops = &vtd_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = VTD_DEVID,
};