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

simba.c (3595B)

      1/*
      2 * QEMU Simba PCI bridge
      3 *
      4 * Copyright (c) 2006 Fabrice Bellard
      5 * Copyright (c) 2012,2013 Artyom Tarasenko
      6 * Copyright (c) 2018 Mark Cave-Ayland
      7 *
      8 * Permission is hereby granted, free of charge, to any person obtaining a copy
      9 * of this software and associated documentation files (the "Software"), to deal
     10 * in the Software without restriction, including without limitation the rights
     11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     12 * copies of the Software, and to permit persons to whom the Software is
     13 * furnished to do so, subject to the following conditions:
     14 *
     15 * The above copyright notice and this permission notice shall be included in
     16 * all copies or substantial portions of the Software.
     17 *
     18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
     21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     24 * THE SOFTWARE.
     25 */
     26
     27#include "qemu/osdep.h"
     28#include "hw/pci/pci.h"
     29#include "hw/pci/pci_bridge.h"
     30#include "hw/pci/pci_bus.h"
     31#include "qemu/module.h"
     32#include "hw/pci-bridge/simba.h"
     33
     34/*
     35 * Chipset docs:
     36 * APB: "Advanced PCI Bridge (APB) User's Manual",
     37 * http://www.sun.com/processors/manuals/805-1251.pdf
     38 */
     39
     40static void simba_pci_bridge_realize(PCIDevice *dev, Error **errp)
     41{
     42    /*
     43     * command register:
     44     * According to PCI bridge spec, after reset
     45     *   bus master bit is off
     46     *   memory space enable bit is off
     47     * According to manual (805-1251.pdf).
     48     *   the reset value should be zero unless the boot pin is tied high
     49     *   (which is true) and thus it should be PCI_COMMAND_MEMORY.
     50     */
     51    SimbaPCIBridge *br = SIMBA_PCI_BRIDGE(dev);
     52
     53    pci_bridge_initfn(dev, TYPE_PCI_BUS);
     54
     55    pci_set_word(dev->config + PCI_COMMAND, PCI_COMMAND_MEMORY);
     56    pci_set_word(dev->config + PCI_STATUS,
     57                 PCI_STATUS_FAST_BACK | PCI_STATUS_66MHZ |
     58                 PCI_STATUS_DEVSEL_MEDIUM);
     59
     60    /* Allow 32-bit IO addresses */
     61    pci_set_word(dev->config + PCI_IO_BASE, PCI_IO_RANGE_TYPE_32);
     62    pci_set_word(dev->config + PCI_IO_LIMIT, PCI_IO_RANGE_TYPE_32);
     63    pci_set_word(dev->wmask + PCI_IO_BASE_UPPER16, 0xffff);
     64    pci_set_word(dev->wmask + PCI_IO_LIMIT_UPPER16, 0xffff);
     65
     66    pci_bridge_update_mappings(PCI_BRIDGE(br));
     67}
     68
     69static void simba_pci_bridge_class_init(ObjectClass *klass, void *data)
     70{
     71    DeviceClass *dc = DEVICE_CLASS(klass);
     72    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
     73
     74    k->realize = simba_pci_bridge_realize;
     75    k->exit = pci_bridge_exitfn;
     76    k->vendor_id = PCI_VENDOR_ID_SUN;
     77    k->device_id = PCI_DEVICE_ID_SUN_SIMBA;
     78    k->revision = 0x11;
     79    k->config_write = pci_bridge_write_config;
     80    k->is_bridge = true;
     81    set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
     82    dc->reset = pci_bridge_reset;
     83    dc->vmsd = &vmstate_pci_device;
     84}
     85
     86static const TypeInfo simba_pci_bridge_info = {
     87    .name          = TYPE_SIMBA_PCI_BRIDGE,
     88    .parent        = TYPE_PCI_BRIDGE,
     89    .class_init    = simba_pci_bridge_class_init,
     90    .instance_size = sizeof(SimbaPCIBridge),
     91    .interfaces = (InterfaceInfo[]) {
     92        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
     93        { },
     94    },
     95};
     96
     97static void simba_register_types(void)
     98{
     99    type_register_static(&simba_pci_bridge_info);
    100}
    101
    102type_init(simba_register_types)