mirror of https://gitee.com/openkylin/qemu.git
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
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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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void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info)
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{
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AcpiTableMcfg *mcfg;
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int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
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mcfg = acpi_data_push(table_data, len);
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mcfg->allocation[0].address = cpu_to_le64(info->base);
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/* Only a single allocation so no need to play with segments */
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mcfg->allocation[0].pci_segment = cpu_to_le16(0);
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mcfg->allocation[0].start_bus_number = 0;
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mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->size - 1);
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build_header(linker, table_data, (void *)mcfg, "MCFG", len, 1, NULL, NULL);
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}
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