LXR qemu/accel/accel-softmmu.c

   1/*
   2 * QEMU accel class, system emulation components
   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 "qemu/accel.h"
  28#include "hw/boards.h"
  29#include "sysemu/cpus.h"
  30#include "qemu/error-report.h"
  31#include "accel-softmmu.h"
  32
  33int accel_init_machine(AccelState *accel, MachineState *ms)
  34{
  35    AccelClass *acc = ACCEL_GET_CLASS(accel);
  36    int ret;
  37    ms->accelerator = accel;
  38    *(acc->allowed) = true;
  39    ret = acc->init_machine(ms);
  40    if (ret < 0) {
  41        ms->accelerator = NULL;
  42        *(acc->allowed) = false;
  43        object_unref(OBJECT(accel));
  44    } else {
  45        object_set_accelerator_compat_props(acc->compat_props);
  46    }
  47    return ret;
  48}
  49
  50AccelState *current_accel(void)
  51{
  52    return current_machine->accelerator;
  53}
  54
  55void accel_setup_post(MachineState *ms)
  56{
  57    AccelState *accel = ms->accelerator;
  58    AccelClass *acc = ACCEL_GET_CLASS(accel);
  59    if (acc->setup_post) {
  60        acc->setup_post(ms, accel);
  61    }
  62}
  63
  64/* initialize the arch-independent accel operation interfaces */
  65void accel_init_ops_interfaces(AccelClass *ac)
  66{
  67    const char *ac_name;
  68    char *ops_name;
  69    ObjectClass *oc;
  70    AccelOpsClass *ops;
  71
  72    ac_name = object_class_get_name(OBJECT_CLASS(ac));
  73    g_assert(ac_name != NULL);
  74
  75    ops_name = g_strdup_printf("%s" ACCEL_OPS_SUFFIX, ac_name);
  76    ops = ACCEL_OPS_CLASS(module_object_class_by_name(ops_name));
  77    oc = module_object_class_by_name(ops_name);
  78    if (!oc) {
  79        error_report("fatal: could not load module for type '%s'", ops_name);
  80        exit(1);
  81    }
  82    g_free(ops_name);
  83    ops = ACCEL_OPS_CLASS(oc);
  84    /*
  85     * all accelerators need to define ops, providing at least a mandatory
  86     * non-NULL create_vcpu_thread operation.
  87     */
  88    g_assert(ops != NULL);
  89    if (ops->ops_init) {
  90        ops->ops_init(ops);
  91    }
  92    cpus_register_accel(ops);
  93}
  94
  95static const TypeInfo accel_ops_type_info = {
  96    .name = TYPE_ACCEL_OPS,
  97    .parent = TYPE_OBJECT,
  98    .abstract = true,
  99    .class_size = sizeof(AccelOpsClass),
 100};
 101
 102static void accel_softmmu_register_types(void)
 103{
 104    type_register_static(&accel_ops_type_info);
 105}
 106type_init(accel_softmmu_register_types);
 107