| 1 | /* |
| 2 | * QEMU device plug/unplug handling |
| 3 | * |
| 4 | * Copyright (C) 2019 Red Hat Inc. |
| 5 | * |
| 6 | * Authors: |
| 7 | * David Hildenbrand <david@redhat.com> |
| 8 | * |
| 9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 10 | * See the COPYING file in the top-level directory. |
| 11 | */ |
| 12 | |
| 13 | #include "qemu/osdep.h" |
| 14 | #include "libqtest.h" |
| 15 | #include "qobject/qdict.h" |
| 16 | #include "qobject/qstring.h" |
| 17 | |
| 18 | static void wait_device_deleted_event(QTestState *qtest, const char *id) |
| 19 | { |
| 20 | QDict *resp, *data; |
| 21 | QString *qstr; |
| 22 | |
| 23 | /* |
| 24 | * Other devices might get removed along with the removed device. Skip |
| 25 | * these. The device of interest will be the last one. |
| 26 | */ |
| 27 | for (;;) { |
| 28 | resp = qtest_qmp_eventwait_ref(qtest, "DEVICE_DELETED"); |
| 29 | data = qdict_get_qdict(resp, "data"); |
| 30 | if (!data || !qdict_get(data, "device")) { |
| 31 | qobject_unref(resp); |
| 32 | continue; |
| 33 | } |
| 34 | qstr = qobject_to(QString, qdict_get(data, "device")); |
| 35 | g_assert(qstr); |
| 36 | if (!strcmp(qstring_get_str(qstr), id)) { |
| 37 | qobject_unref(resp); |
| 38 | break; |
| 39 | } |
| 40 | qobject_unref(resp); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | static void process_device_remove(QTestState *qtest, const char *id) |
| 45 | { |
| 46 | /* |
| 47 | * Request device removal. As the guest is not running, the request won't |
| 48 | * be processed. However during system reset, the removal will be |
| 49 | * handled, removing the device. |
| 50 | */ |
| 51 | qtest_qmp_device_del_send(qtest, id); |
| 52 | qtest_system_reset_nowait(qtest); |
| 53 | wait_device_deleted_event(qtest, id); |
| 54 | } |
| 55 | |
| 56 | static void test_pci_unplug_request(void) |
| 57 | { |
| 58 | QTestState *qtest; |
| 59 | const char *arch = qtest_get_arch(); |
| 60 | const char *machine_addition = ""; |
| 61 | |
| 62 | if (!qtest_has_device("virtio-mouse-pci")) { |
| 63 | g_test_skip("Device virtio-mouse-pci not available"); |
| 64 | return; |
| 65 | } |
| 66 | |
| 67 | if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) { |
| 68 | if (!qtest_has_machine("pc")) { |
| 69 | g_test_skip("Machine 'pc' is not available"); |
| 70 | return; |
| 71 | } |
| 72 | machine_addition = "-machine pc"; |
| 73 | } |
| 74 | |
| 75 | qtest = qtest_initf("%s -device virtio-mouse-pci,id=dev0", |
| 76 | machine_addition); |
| 77 | |
| 78 | process_device_remove(qtest, "dev0"); |
| 79 | |
| 80 | qtest_quit(qtest); |
| 81 | } |
| 82 | |
| 83 | static void test_q35_pci_unplug_request(void) |
| 84 | { |
| 85 | QTestState *qtest; |
| 86 | |
| 87 | if (!qtest_has_device("virtio-mouse-pci")) { |
| 88 | g_test_skip("Device virtio-mouse-pci not available"); |
| 89 | return; |
| 90 | } |
| 91 | |
| 92 | qtest = qtest_initf("-machine q35 " |
| 93 | "-device pcie-root-port,id=p1 " |
| 94 | "-device pcie-pci-bridge,bus=p1,id=b1 " |
| 95 | "-device virtio-mouse-pci,bus=b1,id=dev0"); |
| 96 | |
| 97 | process_device_remove(qtest, "dev0"); |
| 98 | |
| 99 | qtest_quit(qtest); |
| 100 | } |
| 101 | |
| 102 | static void test_pci_unplug_json_request(void) |
| 103 | { |
| 104 | QTestState *qtest; |
| 105 | const char *arch = qtest_get_arch(); |
| 106 | const char *machine_addition = ""; |
| 107 | |
| 108 | if (!qtest_has_device("virtio-mouse-pci")) { |
| 109 | g_test_skip("Device virtio-mouse-pci not available"); |
| 110 | return; |
| 111 | } |
| 112 | |
| 113 | if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) { |
| 114 | if (!qtest_has_machine("pc")) { |
| 115 | g_test_skip("Machine 'pc' is not available"); |
| 116 | return; |
| 117 | } |
| 118 | machine_addition = "-machine pc"; |
| 119 | } |
| 120 | |
| 121 | qtest = qtest_initf( |
| 122 | "%s -device \"{'driver': 'virtio-mouse-pci', 'id': 'dev0'}\"", |
| 123 | machine_addition); |
| 124 | |
| 125 | process_device_remove(qtest, "dev0"); |
| 126 | |
| 127 | qtest_quit(qtest); |
| 128 | } |
| 129 | |
| 130 | static void test_q35_pci_unplug_json_request(void) |
| 131 | { |
| 132 | QTestState *qtest; |
| 133 | const char *port = "-device \"{'driver': 'pcie-root-port', " |
| 134 | "'id': 'p1'}\""; |
| 135 | |
| 136 | const char *bridge = "-device \"{'driver': 'pcie-pci-bridge', " |
| 137 | "'id': 'b1', " |
| 138 | "'bus': 'p1'}\""; |
| 139 | |
| 140 | const char *device = "-device \"{'driver': 'virtio-mouse-pci', " |
| 141 | "'bus': 'b1', " |
| 142 | "'id': 'dev0'}\""; |
| 143 | |
| 144 | if (!qtest_has_device("virtio-mouse-pci")) { |
| 145 | g_test_skip("Device virtio-mouse-pci not available"); |
| 146 | return; |
| 147 | } |
| 148 | |
| 149 | qtest = qtest_initf("-machine q35 %s %s %s", port, bridge, device); |
| 150 | |
| 151 | process_device_remove(qtest, "dev0"); |
| 152 | |
| 153 | qtest_quit(qtest); |
| 154 | } |
| 155 | |
| 156 | static void test_ccw_unplug(void) |
| 157 | { |
| 158 | QTestState *qtest; |
| 159 | |
| 160 | if (!qtest_has_device("virtio-balloon-ccw")) { |
| 161 | g_test_skip("Device virtio-balloon-ccw not available"); |
| 162 | return; |
| 163 | } |
| 164 | |
| 165 | qtest = qtest_initf("-device virtio-balloon-ccw,id=dev0"); |
| 166 | |
| 167 | qtest_qmp_device_del_send(qtest, "dev0"); |
| 168 | wait_device_deleted_event(qtest, "dev0"); |
| 169 | |
| 170 | qtest_quit(qtest); |
| 171 | } |
| 172 | |
| 173 | static void test_spapr_cpu_unplug_request(void) |
| 174 | { |
| 175 | QTestState *qtest; |
| 176 | |
| 177 | qtest = qtest_initf("-cpu power9_v2.2 -smp 1,maxcpus=2 " |
| 178 | "-device power9_v2.2-spapr-cpu-core,core-id=1,id=dev0"); |
| 179 | |
| 180 | /* similar to test_pci_unplug_request */ |
| 181 | process_device_remove(qtest, "dev0"); |
| 182 | |
| 183 | qtest_quit(qtest); |
| 184 | } |
| 185 | |
| 186 | static void test_spapr_memory_unplug_request(void) |
| 187 | { |
| 188 | QTestState *qtest; |
| 189 | |
| 190 | qtest = qtest_initf("-m 256M,slots=1,maxmem=768M " |
| 191 | "-object memory-backend-ram,id=mem0,size=512M " |
| 192 | "-device pc-dimm,id=dev0,memdev=mem0"); |
| 193 | |
| 194 | /* similar to test_pci_unplug_request */ |
| 195 | process_device_remove(qtest, "dev0"); |
| 196 | |
| 197 | qtest_quit(qtest); |
| 198 | } |
| 199 | |
| 200 | static void test_spapr_phb_unplug_request(void) |
| 201 | { |
| 202 | QTestState *qtest; |
| 203 | |
| 204 | qtest = qtest_initf("-device spapr-pci-host-bridge,index=1,id=dev0"); |
| 205 | |
| 206 | /* similar to test_pci_unplug_request */ |
| 207 | process_device_remove(qtest, "dev0"); |
| 208 | |
| 209 | qtest_quit(qtest); |
| 210 | } |
| 211 | |
| 212 | int main(int argc, char **argv) |
| 213 | { |
| 214 | const char *arch = qtest_get_arch(); |
| 215 | |
| 216 | g_test_init(&argc, &argv, NULL); |
| 217 | |
| 218 | /* |
| 219 | * We need a system that will process unplug requests during system resets |
| 220 | * and does not do PCI surprise removal. This holds for x86 ACPI, |
| 221 | * s390x and spapr. |
| 222 | */ |
| 223 | qtest_add_func("/device-plug/pci-unplug-request", |
| 224 | test_pci_unplug_request); |
| 225 | qtest_add_func("/device-plug/pci-unplug-json-request", |
| 226 | test_pci_unplug_json_request); |
| 227 | |
| 228 | if (!strcmp(arch, "s390x")) { |
| 229 | qtest_add_func("/device-plug/ccw-unplug", |
| 230 | test_ccw_unplug); |
| 231 | } |
| 232 | |
| 233 | if (!strcmp(arch, "ppc64")) { |
| 234 | qtest_add_func("/device-plug/spapr-cpu-unplug-request", |
| 235 | test_spapr_cpu_unplug_request); |
| 236 | qtest_add_func("/device-plug/spapr-memory-unplug-request", |
| 237 | test_spapr_memory_unplug_request); |
| 238 | qtest_add_func("/device-plug/spapr-phb-unplug-request", |
| 239 | test_spapr_phb_unplug_request); |
| 240 | } |
| 241 | |
| 242 | if (!strcmp(arch, "x86_64") && qtest_has_machine("q35")) { |
| 243 | qtest_add_func("/device-plug/q35-pci-unplug-request", |
| 244 | test_q35_pci_unplug_request); |
| 245 | qtest_add_func("/device-plug/q35-pci-unplug-json-request", |
| 246 | test_q35_pci_unplug_json_request); |
| 247 | } |
| 248 | |
| 249 | return g_test_run(); |
| 250 | } |