LXR qemu/accel/accel.c

   1/*
   2 * QEMU System Emulator, accelerator interfaces
   3 *
   4 * Copyright (c) 2003-2008 Fabrice Bellard
   5 * Copyright (c) 2014 Red Hat Inc.
   6 *
   7 * Permission is hereby granted, free of charge, to any person obtaining a copy
   8 * of this software and associated documentation files (the "Software"), to deal
   9 * in the Software without restriction, including without limitation the rights
  10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 * copies of the Software, and to permit persons to whom the Software is
  12 * furnished to do so, subject to the following conditions:
  13 *
  14 * The above copyright notice and this permission notice shall be included in
  15 * all copies or substantial portions of the Software.
  16 *
  17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23 * THE SOFTWARE.
  24 */
  25
  26#include "qemu/osdep.h"
  27#include "sysemu/accel.h"
  28#include "hw/boards.h"
  29#include "sysemu/arch_init.h"
  30#include "sysemu/sysemu.h"
  31#include "qom/object.h"
  32
  33static const TypeInfo accel_type = {
  34    .name = TYPE_ACCEL,
  35    .parent = TYPE_OBJECT,
  36    .class_size = sizeof(AccelClass),
  37    .instance_size = sizeof(AccelState),
  38};
  39
  40/* Lookup AccelClass from opt_name. Returns NULL if not found */
  41AccelClass *accel_find(const char *opt_name)
  42{
  43    char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
  44    AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
  45    g_free(class_name);
  46    return ac;
  47}
  48
  49int accel_init_machine(AccelState *accel, MachineState *ms)
  50{
  51    AccelClass *acc = ACCEL_GET_CLASS(accel);
  52    int ret;
  53    ms->accelerator = accel;
  54    *(acc->allowed) = true;
  55    ret = acc->init_machine(ms);
  56    if (ret < 0) {
  57        ms->accelerator = NULL;
  58        *(acc->allowed) = false;
  59        object_unref(OBJECT(accel));
  60    } else {
  61        object_set_accelerator_compat_props(acc->compat_props);
  62    }
  63    return ret;
  64}
  65
  66AccelState *current_accel(void)
  67{
  68    return current_machine->accelerator;
  69}
  70
  71void accel_setup_post(MachineState *ms)
  72{
  73    AccelState *accel = ms->accelerator;
  74    AccelClass *acc = ACCEL_GET_CLASS(accel);
  75    if (acc->setup_post) {
  76        acc->setup_post(ms, accel);
  77    }
  78}
  79
  80static void register_accel_types(void)
  81{
  82    type_register_static(&accel_type);
  83}
  84
  85type_init(register_accel_types);
  86