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 "system/accel-ops.h"
30 #include "system/cpus.h"
31 #include "qemu/error-report.h"
32 #include "accel-internal.h"
33
accel_init_machine(AccelState * accel,MachineState * ms)34 int accel_init_machine(AccelState *accel, MachineState *ms)
35 {
36 AccelClass *acc = ACCEL_GET_CLASS(accel);
37 int ret;
38 ms->accelerator = accel;
39 *(acc->allowed) = true;
40 ret = acc->init_machine(ms);
41 if (ret < 0) {
42 ms->accelerator = NULL;
43 *(acc->allowed) = false;
44 object_unref(OBJECT(accel));
45 } else {
46 object_set_accelerator_compat_props(acc->compat_props);
47 }
48 return ret;
49 }
50
current_accel(void)51 AccelState *current_accel(void)
52 {
53 return current_machine->accelerator;
54 }
55
accel_setup_post(MachineState * ms)56 void accel_setup_post(MachineState *ms)
57 {
58 AccelState *accel = ms->accelerator;
59 AccelClass *acc = ACCEL_GET_CLASS(accel);
60 if (acc->setup_post) {
61 acc->setup_post(ms, accel);
62 }
63 }
64
65 /* initialize the arch-independent accel operation interfaces */
accel_init_ops_interfaces(AccelClass * ac)66 void accel_init_ops_interfaces(AccelClass *ac)
67 {
68 const char *ac_name;
69 char *ops_name;
70 ObjectClass *oc;
71 AccelOpsClass *ops;
72
73 ac_name = object_class_get_name(OBJECT_CLASS(ac));
74 g_assert(ac_name != NULL);
75
76 ops_name = g_strdup_printf("%s" ACCEL_OPS_SUFFIX, ac_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 /*
84 * all accelerators need to define ops, providing at least a mandatory
85 * non-NULL create_vcpu_thread operation.
86 */
87 ops = ACCEL_OPS_CLASS(oc);
88 if (ops->ops_init) {
89 ops->ops_init(ops);
90 }
91 cpus_register_accel(ops);
92 }
93
94 static const TypeInfo accel_ops_type_info = {
95 .name = TYPE_ACCEL_OPS,
96 .parent = TYPE_OBJECT,
97 .abstract = true,
98 .class_size = sizeof(AccelOpsClass),
99 };
100
accel_system_register_types(void)101 static void accel_system_register_types(void)
102 {
103 type_register_static(&accel_ops_type_info);
104 }
105 type_init(accel_system_register_types);
106