cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

pci.c (2175B)

      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 */
     35void 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}