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/*
* Support for generating PCI related ACPI tables and passing them to Guests
*
* Copyright (C) 2006 Fabrice Bellard
* Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
* Copyright (C) 2013-2019 Red Hat Inc
* Copyright (C) 2019 Intel Corporation
*
* Author: Wei Yang <richardw.yang@linux.intel.com>
* Author: Michael S. Tsirkin <mst@redhat.com>
*
* 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; either version 2 of the License, or
* (at your option) any later version.
* 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.
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "hw/acpi/aml-build.h"
#include "hw/acpi/pci.h"
#include "hw/pci/pcie_host.h"
/*
* PCI Firmware Specification, Revision 3.0
* 4.1.2 MCFG Table Description.
*/
void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info,
const char *oem_id, const char *oem_table_id)
{
AcpiTable table = { .sig = "MCFG", .rev = 1,
.oem_id = oem_id, .oem_table_id = oem_table_id };
acpi_table_begin(&table, table_data);
/* Reserved */
build_append_int_noprefix(table_data, 0, 8);
/*
* Memory Mapped Enhanced Configuration Space Base Address Allocation
* Structure
*/
/* Base address, processor-relative */
build_append_int_noprefix(table_data, info->base, 8);
/* PCI segment group number */
build_append_int_noprefix(table_data, 0, 2);
/* Starting PCI Bus number */
build_append_int_noprefix(table_data, 0, 1);
/* Final PCI Bus number */
build_append_int_noprefix(table_data, PCIE_MMCFG_BUS(info->size - 1), 1);
/* Reserved */
build_append_int_noprefix(table_data, 0, 4);
acpi_table_end(linker, &table);
}
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