cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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pvpanic-isa.c (2367B)

      1/*
      2 * QEMU simulated pvpanic device.
      3 *
      4 * Copyright Fujitsu, Corp. 2013
      5 *
      6 * Authors:
      7 *     Wen Congyang <wency@cn.fujitsu.com>
      8 *     Hu Tao <hutao@cn.fujitsu.com>
      9 *
     10 * This work is licensed under the terms of the GNU GPL, version 2 or later.
     11 * See the COPYING file in the top-level directory.
     12 *
     13 */
     14
     15#include "qemu/osdep.h"
     16#include "qemu/module.h"
     17#include "sysemu/runstate.h"
     18
     19#include "hw/nvram/fw_cfg.h"
     20#include "hw/qdev-properties.h"
     21#include "hw/misc/pvpanic.h"
     22#include "qom/object.h"
     23#include "hw/isa/isa.h"
     24
     25OBJECT_DECLARE_SIMPLE_TYPE(PVPanicISAState, PVPANIC_ISA_DEVICE)
     26
     27/*
     28 * PVPanicISAState for ISA device and
     29 * use ioport.
     30 */
     31struct PVPanicISAState {
     32    ISADevice parent_obj;
     33
     34    uint16_t ioport;
     35    PVPanicState pvpanic;
     36};
     37
     38static void pvpanic_isa_initfn(Object *obj)
     39{
     40    PVPanicISAState *s = PVPANIC_ISA_DEVICE(obj);
     41
     42    pvpanic_setup_io(&s->pvpanic, DEVICE(s), 1);
     43}
     44
     45static void pvpanic_isa_realizefn(DeviceState *dev, Error **errp)
     46{
     47    ISADevice *d = ISA_DEVICE(dev);
     48    PVPanicISAState *s = PVPANIC_ISA_DEVICE(dev);
     49    PVPanicState *ps = &s->pvpanic;
     50    FWCfgState *fw_cfg = fw_cfg_find();
     51    uint16_t *pvpanic_port;
     52
     53    if (!fw_cfg) {
     54        return;
     55    }
     56
     57    pvpanic_port = g_malloc(sizeof(*pvpanic_port));
     58    *pvpanic_port = cpu_to_le16(s->ioport);
     59    fw_cfg_add_file(fw_cfg, "etc/pvpanic-port", pvpanic_port,
     60                    sizeof(*pvpanic_port));
     61
     62    isa_register_ioport(d, &ps->mr, s->ioport);
     63}
     64
     65static Property pvpanic_isa_properties[] = {
     66    DEFINE_PROP_UINT16(PVPANIC_IOPORT_PROP, PVPanicISAState, ioport, 0x505),
     67    DEFINE_PROP_UINT8("events", PVPanicISAState, pvpanic.events, PVPANIC_PANICKED | PVPANIC_CRASHLOADED),
     68    DEFINE_PROP_END_OF_LIST(),
     69};
     70
     71static void pvpanic_isa_class_init(ObjectClass *klass, void *data)
     72{
     73    DeviceClass *dc = DEVICE_CLASS(klass);
     74
     75    dc->realize = pvpanic_isa_realizefn;
     76    device_class_set_props(dc, pvpanic_isa_properties);
     77    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     78}
     79
     80static TypeInfo pvpanic_isa_info = {
     81    .name          = TYPE_PVPANIC_ISA_DEVICE,
     82    .parent        = TYPE_ISA_DEVICE,
     83    .instance_size = sizeof(PVPanicISAState),
     84    .instance_init = pvpanic_isa_initfn,
     85    .class_init    = pvpanic_isa_class_init,
     86};
     87
     88static void pvpanic_register_types(void)
     89{
     90    type_register_static(&pvpanic_isa_info);
     91}
     92
     93type_init(pvpanic_register_types)