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-system.h"
32
accel_init_machine(AccelState * accel,MachineState * ms)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
current_accel(void)50 AccelState *current_accel(void)
51 {
52 return current_machine->accelerator;
53 }
54
accel_setup_post(MachineState * ms)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 */
accel_system_init_ops_interfaces(AccelClass * ac)65 void accel_system_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
accel_system_register_types(void)102 static void accel_system_register_types(void)
103 {
104 type_register_static(&accel_ops_type_info);
105 }
106 type_init(accel_system_register_types);
107