Merge remote-tracking branch 'remotes/jsnow-gitlab/tags/python-pull-request' into...
[qemu.git] / hw / acpi / pci.c
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 /*
32 * PCI Firmware Specification, Revision 3.0
33 * 4.1.2 MCFG Table Description.
34 */
35 void build_mcfg(GArray *table_data, BIOSLinker *linker, AcpiMcfgInfo *info,
36 const char *oem_id, const char *oem_table_id)
37 {
38 AcpiTable table = { .sig = "MCFG", .rev = 1,
39 .oem_id = oem_id, .oem_table_id = oem_table_id };
40
41 acpi_table_begin(&table, table_data);
42
43 /* Reserved */
44 build_append_int_noprefix(table_data, 0, 8);
45 /*
46 * Memory Mapped Enhanced Configuration Space Base Address Allocation
47 * Structure
48 */
49 /* Base address, processor-relative */
50 build_append_int_noprefix(table_data, info->base, 8);
51 /* PCI segment group number */
52 build_append_int_noprefix(table_data, 0, 2);
53 /* Starting PCI Bus number */
54 build_append_int_noprefix(table_data, 0, 1);
55 /* Final PCI Bus number */
56 build_append_int_noprefix(table_data, PCIE_MMCFG_BUS(info->size - 1), 1);
57 /* Reserved */
58 build_append_int_noprefix(table_data, 0, 4);
59
60 acpi_table_end(linker, &table);
61 }