Werner Zeh has uploaded this change for review. ( https://review.coreboot.org/28671
Change subject: fsp_broadwell_de: Move DMAR table generation to belonging VT-d device ......................................................................
fsp_broadwell_de: Move DMAR table generation to belonging VT-d device
The DMAR table generation depends on the VT-d feature which is implemented in its own PCI device (for Broadwell-DE it is PCI:00:05.0). 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 --- M src/soc/intel/fsp_broadwell_de/Makefile.inc M src/soc/intel/fsp_broadwell_de/acpi.c M src/soc/intel/fsp_broadwell_de/include/soc/acpi.h M src/soc/intel/fsp_broadwell_de/northcluster.c A src/soc/intel/fsp_broadwell_de/vtd.c 5 files changed, 47 insertions(+), 5 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/71/28671/1
diff --git a/src/soc/intel/fsp_broadwell_de/Makefile.inc b/src/soc/intel/fsp_broadwell_de/Makefile.inc index 386adc1..9312663 100644 --- a/src/soc/intel/fsp_broadwell_de/Makefile.inc +++ b/src/soc/intel/fsp_broadwell_de/Makefile.inc @@ -34,6 +34,7 @@ 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 diff --git a/src/soc/intel/fsp_broadwell_de/acpi.c b/src/soc/intel/fsp_broadwell_de/acpi.c index 5d65477..b99cc49 100644 --- a/src/soc/intel/fsp_broadwell_de/acpi.c +++ b/src/soc/intel/fsp_broadwell_de/acpi.c @@ -390,15 +390,14 @@ 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) & 0x01)) return current;
printk(BIOS_DEBUG, "ACPI: * DMAR\n"); diff --git a/src/soc/intel/fsp_broadwell_de/include/soc/acpi.h b/src/soc/intel/fsp_broadwell_de/include/soc/acpi.h index da552cc..dce267a 100644 --- a/src/soc/intel/fsp_broadwell_de/include/soc/acpi.h +++ b/src/soc/intel/fsp_broadwell_de/include/soc/acpi.h @@ -24,7 +24,7 @@ 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 vtd_write_acpi_tables(struct device *const dev, unsigned long current, struct acpi_rsdp *const rsdp);
diff --git a/src/soc/intel/fsp_broadwell_de/northcluster.c b/src/soc/intel/fsp_broadwell_de/northcluster.c index 7090370..8da41d4 100644 --- a/src/soc/intel/fsp_broadwell_de/northcluster.c +++ b/src/soc/intel/fsp_broadwell_de/northcluster.c @@ -137,7 +137,6 @@ 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, diff --git a/src/soc/intel/fsp_broadwell_de/vtd.c b/src/soc/intel/fsp_broadwell_de/vtd.c new file mode 100644 index 0000000..eccfdfb --- /dev/null +++ b/src/soc/intel/fsp_broadwell_de/vtd.c @@ -0,0 +1,43 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * Copyright (C) 2015-2016 Intel Corp. + * Copyright (C) 2016 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 <arch/acpi.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <soc/pci_devs.h> +#include <soc/acpi.h> + + +static void vtd_read_resources(struct device *dev) +{ + /* Call the normal read_resources */ + pci_dev_read_resources(dev); +} + +static struct device_operations vtd_ops = { + .read_resources = vtd_read_resources, + .write_acpi_tables = vtd_write_acpi_tables, + .set_resources = pci_dev_set_resources, + .scan_bus = 0, + .ops_pci = 0, +}; + +static const struct pci_driver vtd_driver __pci_driver = { + .ops = &vtd_ops, + .vendor = PCI_VENDOR_ID_INTEL, + .device = VTD_DEVID, +};