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 | |