qemu

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/*
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 * Support for generating PCI related ACPI tables and passing them to Guests
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 *
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 * Copyright (C) 2006 Fabrice Bellard
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 * Copyright (C) 2008-2010  Kevin O'Connor <kevin@koconnor.net>
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 * Copyright (C) 2013-2019 Red Hat Inc
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 * Copyright (C) 2019 Intel Corporation
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 *
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 * Author: Wei Yang <richardw.yang@linux.intel.com>
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 * Author: Michael S. Tsirkin <mst@redhat.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 * You should have received a copy of the GNU General Public License along
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 * with this program; if not, see <http://www.gnu.org/licenses/>.
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 */
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#include "qemu/osdep.h"
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#include "hw/acpi/aml-build.h"
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#include "hw/acpi/pci.h"
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#include "hw/pci/pcie_host.h"
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/*
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 * PCI Firmware Specification, Revision 3.0
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 * 4.1.2 MCFG Table Description.
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 */
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void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info,
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                const char *oem_id, const char *oem_table_id)
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{
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    AcpiTable table = { .sig = "MCFG", .rev = 1,
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                        .oem_id = oem_id, .oem_table_id = oem_table_id };
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    acpi_table_begin(&table, table_data);
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    /* Reserved */
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    build_append_int_noprefix(table_data, 0, 8);
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    /*
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     * Memory Mapped Enhanced Configuration Space Base Address Allocation
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     * Structure
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     */
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    /* Base address, processor-relative */
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    build_append_int_noprefix(table_data, info->base, 8);
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    /* PCI segment group number */
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    build_append_int_noprefix(table_data, 0, 2);
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    /* Starting PCI Bus number */
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    build_append_int_noprefix(table_data, 0, 1);
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    /* Final PCI Bus number */
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    build_append_int_noprefix(table_data, PCIE_MMCFG_BUS(info->size - 1), 1);
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    /* Reserved */
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    build_append_int_noprefix(table_data, 0, 4);
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    acpi_table_end(linker, &table);
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}
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