qemu

FORK: QEMU emulator
git clone https://git.neptards.moe/neptards/qemu.git
Log | Files | Refs | Submodules | LICENSE

accel-softmmu.c (3253B)

      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 
     31 #include "accel-softmmu.h"
     32 
     33 int 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 
     50 AccelState *current_accel(void)
     51 {
     52     return current_machine->accelerator;
     53 }
     54 
     55 void 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 */
     65 void 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 
     95 static 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 
    102 static void accel_softmmu_register_types(void)
    103 {
    104     type_register_static(&accel_ops_type_info);
    105 }
    106 type_init(accel_softmmu_register_types);