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
  33 static 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 */
  41 AccelClass *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
  49 int 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
  66 AccelState *current_accel(void)
  67 {
  68     return current_machine->accelerator;
  69 }
  70
  71 void 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
  80 static void register_accel_types(void)
  81 {
  82     type_register_static(&accel_type);
  83 }
  84
  85 type_init(register_accel_types);