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 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_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 oc = module_object_class_by_name(ops_name); 77 if (!oc) { 78 error_report("fatal: could not load module for type '%s'", ops_name); 79 exit(1); 80 } 81 g_free(ops_name); 82 /* 83 * all accelerators need to define ops, providing at least a mandatory 84 * non-NULL create_vcpu_thread operation. 85 */ 86 ops = ACCEL_OPS_CLASS(oc); 87 if (ops->ops_init) { 88 ops->ops_init(ops); 89 } 90 cpus_register_accel(ops); 91 } 92 93 static const TypeInfo accel_ops_type_info = { 94 .name = TYPE_ACCEL_OPS, 95 .parent = TYPE_OBJECT, 96 .abstract = true, 97 .class_size = sizeof(AccelOpsClass), 98 }; 99 100 static void accel_system_register_types(void) 101 { 102 type_register_static(&accel_ops_type_info); 103 } 104 type_init(accel_system_register_types); 105