1 /* 2 * Support for generating PCI related ACPI tables and passing them to Guests 3 * 4 * Copyright (C) 2006 Fabrice Bellard 5 * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net> 6 * Copyright (C) 2013-2019 Red Hat Inc 7 * Copyright (C) 2019 Intel Corporation 8 * 9 * Author: Wei Yang <richardw.yang@linux.intel.com> 10 * Author: Michael S. Tsirkin <mst@redhat.com> 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 22 * You should have received a copy of the GNU General Public License along 23 * with this program; if not, see <http://www.gnu.org/licenses/>. 24 */ 25 26 #include "qemu/osdep.h" 27 #include "hw/acpi/aml-build.h" 28 #include "hw/acpi/pci.h" 29 #include "hw/pci/pcie_host.h" 30 31 void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info) 32 { 33 int mcfg_start = table_data->len; 34 35 /* 36 * PCI Firmware Specification, Revision 3.0 37 * 4.1.2 MCFG Table Description. 38 */ 39 acpi_data_push(table_data, sizeof(AcpiTableHeader)); 40 /* Reserved */ 41 build_append_int_noprefix(table_data, 0, 8); 42 43 /* 44 * Memory Mapped Enhanced Configuration Space Base Address Allocation 45 * Structure 46 */ 47 /* Base address, processor-relative */ 48 build_append_int_noprefix(table_data, info->base, 8); 49 /* PCI segment group number */ 50 build_append_int_noprefix(table_data, 0, 2); 51 /* Starting PCI Bus number */ 52 build_append_int_noprefix(table_data, 0, 1); 53 /* Final PCI Bus number */ 54 build_append_int_noprefix(table_data, PCIE_MMCFG_BUS(info->size - 1), 1); 55 /* Reserved */ 56 build_append_int_noprefix(table_data, 0, 4); 57 58 build_header(linker, table_data, (void *)(table_data->data + mcfg_start), 59 "MCFG", table_data->len - mcfg_start, 1, NULL, NULL); 60 } 61 62