| 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 "qom/compat-properties.h" |
| 29 | #include "qapi/qapi-commands-accelerator.h" |
| 30 | #include "monitor/monitor.h" |
| 31 | #include "monitor/hmp.h" |
| 32 | #include "hw/core/boards.h" |
| 33 | #include "hw/core/cpu.h" |
| 34 | #include "accel/accel-ops.h" |
| 35 | #include "accel/accel-cpu-ops.h" |
| 36 | #include "system/cpus.h" |
| 37 | #include "qemu/error-report.h" |
| 38 | #include "accel-internal.h" |
| 39 | |
| 40 | int accel_init_machine(AccelState *accel, MachineState *ms) |
| 41 | { |
| 42 | AccelClass *acc = ACCEL_GET_CLASS(accel); |
| 43 | int ret; |
| 44 | ms->accelerator = accel; |
| 45 | *(acc->allowed) = true; |
| 46 | ret = acc->init_machine(accel, ms); |
| 47 | if (ret < 0) { |
| 48 | ms->accelerator = NULL; |
| 49 | *(acc->allowed) = false; |
| 50 | object_unref(OBJECT(accel)); |
| 51 | } else { |
| 52 | object_set_accelerator_compat_props(acc->compat_props); |
| 53 | } |
| 54 | return ret; |
| 55 | } |
| 56 | |
| 57 | AccelState *current_accel(void) |
| 58 | { |
| 59 | return current_machine->accelerator; |
| 60 | } |
| 61 | |
| 62 | void accel_setup_post(MachineState *ms) |
| 63 | { |
| 64 | AccelState *accel = ms->accelerator; |
| 65 | AccelClass *acc = ACCEL_GET_CLASS(accel); |
| 66 | if (acc->setup_post) { |
| 67 | acc->setup_post(accel); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | void accel_pre_resume(MachineState *ms, bool step_pending) |
| 72 | { |
| 73 | AccelState *accel = ms->accelerator; |
| 74 | AccelClass *acc = ACCEL_GET_CLASS(accel); |
| 75 | if (acc->pre_resume_vm) { |
| 76 | acc->pre_resume_vm(accel, step_pending); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | /* initialize the arch-independent accel operation interfaces */ |
| 81 | void accel_init_ops_interfaces(AccelClass *ac) |
| 82 | { |
| 83 | const char *ac_name; |
| 84 | char *ops_name; |
| 85 | ObjectClass *oc; |
| 86 | AccelOpsClass *ops; |
| 87 | |
| 88 | ac_name = object_class_get_name(OBJECT_CLASS(ac)); |
| 89 | g_assert(ac_name != NULL); |
| 90 | |
| 91 | ops_name = g_strdup_printf("%s" ACCEL_OPS_SUFFIX, ac_name); |
| 92 | oc = module_object_class_by_name(ops_name); |
| 93 | if (!oc) { |
| 94 | error_report("fatal: could not load module for type '%s'", ops_name); |
| 95 | exit(1); |
| 96 | } |
| 97 | g_free(ops_name); |
| 98 | /* |
| 99 | * all accelerators need to define ops, providing at least a mandatory |
| 100 | * non-NULL create_vcpu_thread operation. |
| 101 | */ |
| 102 | ops = ACCEL_OPS_CLASS(oc); |
| 103 | ac->ops = ops; |
| 104 | if (ops->ops_init) { |
| 105 | ops->ops_init(ac); |
| 106 | } |
| 107 | cpus_register_accel(ops); |
| 108 | } |
| 109 | |
| 110 | static void accel_ops_class_init(ObjectClass *oc, const void *data) |
| 111 | { |
| 112 | #ifdef CONFIG_HMP |
| 113 | monitor_register_hmp_info_hrt("accel", qmp_x_accel_stats); |
| 114 | #endif |
| 115 | } |
| 116 | |
| 117 | static const TypeInfo accel_ops_type_info = { |
| 118 | .name = TYPE_ACCEL_OPS, |
| 119 | .parent = TYPE_OBJECT, |
| 120 | .abstract = true, |
| 121 | .class_size = sizeof(AccelOpsClass), |
| 122 | .class_init = accel_ops_class_init, |
| 123 | }; |
| 124 | |
| 125 | static void accel_system_register_types(void) |
| 126 | { |
| 127 | type_register_static(&accel_ops_type_info); |
| 128 | } |
| 129 | type_init(accel_system_register_types); |