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 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(accel, 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 51 AccelState *current_accel(void) 52 { 53 return current_machine->accelerator; 54 } 55 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(accel); 62 } 63 } 64 65 void accel_pre_resume(MachineState *ms, bool step_pending) 66 { 67 AccelState *accel = ms->accelerator; 68 AccelClass *acc = ACCEL_GET_CLASS(accel); 69 if (acc->pre_resume_vm) { 70 acc->pre_resume_vm(accel, step_pending); 71 } 72 } 73 74 /* initialize the arch-independent accel operation interfaces */ 75 void accel_init_ops_interfaces(AccelClass *ac) 76 { 77 const char *ac_name; 78 char *ops_name; 79 ObjectClass *oc; 80 AccelOpsClass *ops; 81 82 ac_name = object_class_get_name(OBJECT_CLASS(ac)); 83 g_assert(ac_name != NULL); 84 85 ops_name = g_strdup_printf("%s" ACCEL_OPS_SUFFIX, ac_name); 86 oc = module_object_class_by_name(ops_name); 87 if (!oc) { 88 error_report("fatal: could not load module for type '%s'", ops_name); 89 exit(1); 90 } 91 g_free(ops_name); 92 /* 93 * all accelerators need to define ops, providing at least a mandatory 94 * non-NULL create_vcpu_thread operation. 95 */ 96 ops = ACCEL_OPS_CLASS(oc); 97 ac->ops = ops; 98 if (ops->ops_init) { 99 ops->ops_init(ac); 100 } 101 cpus_register_accel(ops); 102 } 103 104 static const TypeInfo accel_ops_type_info = { 105 .name = TYPE_ACCEL_OPS, 106 .parent = TYPE_OBJECT, 107 .abstract = true, 108 .class_size = sizeof(AccelOpsClass), 109 }; 110 111 static void accel_system_register_types(void) 112 { 113 type_register_static(&accel_ops_type_info); 114 } 115 type_init(accel_system_register_types); 116