1 /* 2 * virtio ccw machine 3 * 4 * Copyright 2012 IBM Corp. 5 * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> 6 * 7 * This work is licensed under the terms of the GNU GPL, version 2 or (at 8 * your option) any later version. See the COPYING file in the top-level 9 * directory. 10 */ 11 12 #include "qemu/osdep.h" 13 #include "qapi/error.h" 14 #include "qemu-common.h" 15 #include "cpu.h" 16 #include "hw/boards.h" 17 #include "exec/address-spaces.h" 18 #include "s390-virtio.h" 19 #include "hw/s390x/sclp.h" 20 #include "hw/s390x/s390_flic.h" 21 #include "hw/s390x/ioinst.h" 22 #include "hw/s390x/css.h" 23 #include "virtio-ccw.h" 24 #include "qemu/config-file.h" 25 #include "s390-pci-bus.h" 26 #include "hw/s390x/storage-keys.h" 27 #include "hw/compat.h" 28 #include "ipl.h" 29 #include "hw/s390x/s390-virtio-ccw.h" 30 #include "hw/s390x/css-bridge.h" 31 32 static const char *const reset_dev_types[] = { 33 TYPE_VIRTUAL_CSS_BRIDGE, 34 "s390-sclp-event-facility", 35 "s390-flic", 36 "diag288", 37 }; 38 39 void subsystem_reset(void) 40 { 41 DeviceState *dev; 42 int i; 43 44 for (i = 0; i < ARRAY_SIZE(reset_dev_types); i++) { 45 dev = DEVICE(object_resolve_path_type("", reset_dev_types[i], NULL)); 46 if (dev) { 47 qdev_reset_all(dev); 48 } 49 } 50 } 51 52 static int virtio_ccw_hcall_notify(const uint64_t *args) 53 { 54 uint64_t subch_id = args[0]; 55 uint64_t queue = args[1]; 56 SubchDev *sch; 57 int cssid, ssid, schid, m; 58 59 if (ioinst_disassemble_sch_ident(subch_id, &m, &cssid, &ssid, &schid)) { 60 return -EINVAL; 61 } 62 sch = css_find_subch(m, cssid, ssid, schid); 63 if (!sch || !css_subch_visible(sch)) { 64 return -EINVAL; 65 } 66 if (queue >= VIRTIO_QUEUE_MAX) { 67 return -EINVAL; 68 } 69 virtio_queue_notify(virtio_ccw_get_vdev(sch), queue); 70 return 0; 71 72 } 73 74 static int virtio_ccw_hcall_early_printk(const uint64_t *args) 75 { 76 uint64_t mem = args[0]; 77 78 if (mem < ram_size) { 79 /* Early printk */ 80 return 0; 81 } 82 return -EINVAL; 83 } 84 85 static void virtio_ccw_register_hcalls(void) 86 { 87 s390_register_virtio_hypercall(KVM_S390_VIRTIO_CCW_NOTIFY, 88 virtio_ccw_hcall_notify); 89 /* Tolerate early printk. */ 90 s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY, 91 virtio_ccw_hcall_early_printk); 92 } 93 94 void s390_memory_init(ram_addr_t mem_size) 95 { 96 MemoryRegion *sysmem = get_system_memory(); 97 MemoryRegion *ram = g_new(MemoryRegion, 1); 98 99 /* allocate RAM for core */ 100 memory_region_allocate_system_memory(ram, NULL, "s390.ram", mem_size); 101 memory_region_add_subregion(sysmem, 0, ram); 102 103 /* Initialize storage key device */ 104 s390_skeys_init(); 105 } 106 107 static void ccw_init(MachineState *machine) 108 { 109 int ret; 110 VirtualCssBus *css_bus; 111 DeviceState *dev; 112 113 s390_sclp_init(); 114 s390_memory_init(machine->ram_size); 115 116 /* get a BUS */ 117 css_bus = virtual_css_bus_init(); 118 s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline, 119 machine->initrd_filename, "s390-ccw.img", 120 "s390-netboot.img", true); 121 s390_flic_init(); 122 123 dev = qdev_create(NULL, TYPE_S390_PCI_HOST_BRIDGE); 124 object_property_add_child(qdev_get_machine(), TYPE_S390_PCI_HOST_BRIDGE, 125 OBJECT(dev), NULL); 126 qdev_init_nofail(dev); 127 128 /* register hypercalls */ 129 virtio_ccw_register_hcalls(); 130 131 /* init CPUs */ 132 s390_init_cpus(machine); 133 134 if (kvm_enabled()) { 135 kvm_s390_enable_css_support(s390_cpu_addr2state(0)); 136 } 137 /* 138 * Create virtual css and set it as default so that non mcss-e 139 * enabled guests only see virtio devices. 140 */ 141 ret = css_create_css_image(VIRTUAL_CSSID, true); 142 assert(ret == 0); 143 144 /* Create VirtIO network adapters */ 145 s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw"); 146 147 /* Register savevm handler for guest TOD clock */ 148 register_savevm(NULL, "todclock", 0, 1, 149 gtod_save, gtod_load, kvm_state); 150 } 151 152 static void s390_cpu_plug(HotplugHandler *hotplug_dev, 153 DeviceState *dev, Error **errp) 154 { 155 gchar *name; 156 S390CPU *cpu = S390_CPU(dev); 157 CPUState *cs = CPU(dev); 158 159 name = g_strdup_printf("cpu[%i]", cpu->env.cpu_num); 160 object_property_set_link(OBJECT(hotplug_dev), OBJECT(cs), name, 161 errp); 162 g_free(name); 163 } 164 165 static void s390_machine_device_plug(HotplugHandler *hotplug_dev, 166 DeviceState *dev, Error **errp) 167 { 168 if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 169 s390_cpu_plug(hotplug_dev, dev, errp); 170 } 171 } 172 173 static HotplugHandler *s390_get_hotplug_handler(MachineState *machine, 174 DeviceState *dev) 175 { 176 if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 177 return HOTPLUG_HANDLER(machine); 178 } 179 return NULL; 180 } 181 182 static void s390_hot_add_cpu(const int64_t id, Error **errp) 183 { 184 MachineState *machine = MACHINE(qdev_get_machine()); 185 186 s390x_new_cpu(machine->cpu_model, id, errp); 187 } 188 189 static void ccw_machine_class_init(ObjectClass *oc, void *data) 190 { 191 MachineClass *mc = MACHINE_CLASS(oc); 192 NMIClass *nc = NMI_CLASS(oc); 193 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 194 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 195 196 s390mc->ri_allowed = true; 197 s390mc->cpu_model_allowed = true; 198 mc->init = ccw_init; 199 mc->reset = s390_machine_reset; 200 mc->hot_add_cpu = s390_hot_add_cpu; 201 mc->block_default_type = IF_VIRTIO; 202 mc->no_cdrom = 1; 203 mc->no_floppy = 1; 204 mc->no_serial = 1; 205 mc->no_parallel = 1; 206 mc->no_sdcard = 1; 207 mc->use_sclp = 1; 208 mc->max_cpus = 248; 209 mc->get_hotplug_handler = s390_get_hotplug_handler; 210 hc->plug = s390_machine_device_plug; 211 nc->nmi_monitor_handler = s390_nmi; 212 } 213 214 static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp) 215 { 216 S390CcwMachineState *ms = S390_CCW_MACHINE(obj); 217 218 return ms->aes_key_wrap; 219 } 220 221 static inline void machine_set_aes_key_wrap(Object *obj, bool value, 222 Error **errp) 223 { 224 S390CcwMachineState *ms = S390_CCW_MACHINE(obj); 225 226 ms->aes_key_wrap = value; 227 } 228 229 static inline bool machine_get_dea_key_wrap(Object *obj, Error **errp) 230 { 231 S390CcwMachineState *ms = S390_CCW_MACHINE(obj); 232 233 return ms->dea_key_wrap; 234 } 235 236 static inline void machine_set_dea_key_wrap(Object *obj, bool value, 237 Error **errp) 238 { 239 S390CcwMachineState *ms = S390_CCW_MACHINE(obj); 240 241 ms->dea_key_wrap = value; 242 } 243 244 bool ri_allowed(void) 245 { 246 if (kvm_enabled()) { 247 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); 248 if (object_class_dynamic_cast(OBJECT_CLASS(mc), 249 TYPE_S390_CCW_MACHINE)) { 250 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 251 252 return s390mc->ri_allowed; 253 } 254 /* 255 * Make sure the "none" machine can have ri, otherwise it won't * be 256 * unlocked in KVM and therefore the host CPU model might be wrong. 257 */ 258 return true; 259 } 260 return 0; 261 } 262 263 bool cpu_model_allowed(void) 264 { 265 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); 266 if (object_class_dynamic_cast(OBJECT_CLASS(mc), 267 TYPE_S390_CCW_MACHINE)) { 268 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 269 270 return s390mc->cpu_model_allowed; 271 } 272 /* allow CPU model qmp queries with the "none" machine */ 273 return true; 274 } 275 276 static inline void s390_machine_initfn(Object *obj) 277 { 278 object_property_add_bool(obj, "aes-key-wrap", 279 machine_get_aes_key_wrap, 280 machine_set_aes_key_wrap, NULL); 281 object_property_set_description(obj, "aes-key-wrap", 282 "enable/disable AES key wrapping using the CPACF wrapping key", 283 NULL); 284 object_property_set_bool(obj, true, "aes-key-wrap", NULL); 285 286 object_property_add_bool(obj, "dea-key-wrap", 287 machine_get_dea_key_wrap, 288 machine_set_dea_key_wrap, NULL); 289 object_property_set_description(obj, "dea-key-wrap", 290 "enable/disable DEA key wrapping using the CPACF wrapping key", 291 NULL); 292 object_property_set_bool(obj, true, "dea-key-wrap", NULL); 293 } 294 295 static const TypeInfo ccw_machine_info = { 296 .name = TYPE_S390_CCW_MACHINE, 297 .parent = TYPE_MACHINE, 298 .abstract = true, 299 .instance_size = sizeof(S390CcwMachineState), 300 .instance_init = s390_machine_initfn, 301 .class_size = sizeof(S390CcwMachineClass), 302 .class_init = ccw_machine_class_init, 303 .interfaces = (InterfaceInfo[]) { 304 { TYPE_NMI }, 305 { TYPE_HOTPLUG_HANDLER}, 306 { } 307 }, 308 }; 309 310 #define DEFINE_CCW_MACHINE(suffix, verstr, latest) \ 311 static void ccw_machine_##suffix##_class_init(ObjectClass *oc, \ 312 void *data) \ 313 { \ 314 MachineClass *mc = MACHINE_CLASS(oc); \ 315 ccw_machine_##suffix##_class_options(mc); \ 316 mc->desc = "VirtIO-ccw based S390 machine v" verstr; \ 317 if (latest) { \ 318 mc->alias = "s390-ccw-virtio"; \ 319 mc->is_default = 1; \ 320 } \ 321 } \ 322 static void ccw_machine_##suffix##_instance_init(Object *obj) \ 323 { \ 324 MachineState *machine = MACHINE(obj); \ 325 ccw_machine_##suffix##_instance_options(machine); \ 326 } \ 327 static const TypeInfo ccw_machine_##suffix##_info = { \ 328 .name = MACHINE_TYPE_NAME("s390-ccw-virtio-" verstr), \ 329 .parent = TYPE_S390_CCW_MACHINE, \ 330 .class_init = ccw_machine_##suffix##_class_init, \ 331 .instance_init = ccw_machine_##suffix##_instance_init, \ 332 }; \ 333 static void ccw_machine_register_##suffix(void) \ 334 { \ 335 type_register_static(&ccw_machine_##suffix##_info); \ 336 } \ 337 type_init(ccw_machine_register_##suffix) 338 339 #define CCW_COMPAT_2_8 \ 340 HW_COMPAT_2_8 \ 341 {\ 342 .driver = TYPE_S390_FLIC_COMMON,\ 343 .property = "adapter_routes_max_batch",\ 344 .value = "64",\ 345 }, 346 347 #define CCW_COMPAT_2_7 \ 348 HW_COMPAT_2_7 349 350 #define CCW_COMPAT_2_6 \ 351 HW_COMPAT_2_6 \ 352 {\ 353 .driver = TYPE_S390_IPL,\ 354 .property = "iplbext_migration",\ 355 .value = "off",\ 356 }, {\ 357 .driver = TYPE_VIRTUAL_CSS_BRIDGE,\ 358 .property = "css_dev_path",\ 359 .value = "off",\ 360 }, 361 362 #define CCW_COMPAT_2_5 \ 363 HW_COMPAT_2_5 364 365 #define CCW_COMPAT_2_4 \ 366 HW_COMPAT_2_4 \ 367 {\ 368 .driver = TYPE_S390_SKEYS,\ 369 .property = "migration-enabled",\ 370 .value = "off",\ 371 },{\ 372 .driver = "virtio-blk-ccw",\ 373 .property = "max_revision",\ 374 .value = "0",\ 375 },{\ 376 .driver = "virtio-balloon-ccw",\ 377 .property = "max_revision",\ 378 .value = "0",\ 379 },{\ 380 .driver = "virtio-serial-ccw",\ 381 .property = "max_revision",\ 382 .value = "0",\ 383 },{\ 384 .driver = "virtio-9p-ccw",\ 385 .property = "max_revision",\ 386 .value = "0",\ 387 },{\ 388 .driver = "virtio-rng-ccw",\ 389 .property = "max_revision",\ 390 .value = "0",\ 391 },{\ 392 .driver = "virtio-net-ccw",\ 393 .property = "max_revision",\ 394 .value = "0",\ 395 },{\ 396 .driver = "virtio-scsi-ccw",\ 397 .property = "max_revision",\ 398 .value = "0",\ 399 },{\ 400 .driver = "vhost-scsi-ccw",\ 401 .property = "max_revision",\ 402 .value = "0",\ 403 }, 404 405 static void ccw_machine_2_9_instance_options(MachineState *machine) 406 { 407 } 408 409 static void ccw_machine_2_9_class_options(MachineClass *mc) 410 { 411 } 412 DEFINE_CCW_MACHINE(2_9, "2.9", true); 413 414 static void ccw_machine_2_8_instance_options(MachineState *machine) 415 { 416 ccw_machine_2_9_instance_options(machine); 417 } 418 419 static void ccw_machine_2_8_class_options(MachineClass *mc) 420 { 421 ccw_machine_2_9_class_options(mc); 422 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_8); 423 } 424 DEFINE_CCW_MACHINE(2_8, "2.8", false); 425 426 static void ccw_machine_2_7_instance_options(MachineState *machine) 427 { 428 ccw_machine_2_8_instance_options(machine); 429 } 430 431 static void ccw_machine_2_7_class_options(MachineClass *mc) 432 { 433 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 434 435 s390mc->cpu_model_allowed = false; 436 ccw_machine_2_8_class_options(mc); 437 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_7); 438 } 439 DEFINE_CCW_MACHINE(2_7, "2.7", false); 440 441 static void ccw_machine_2_6_instance_options(MachineState *machine) 442 { 443 ccw_machine_2_7_instance_options(machine); 444 } 445 446 static void ccw_machine_2_6_class_options(MachineClass *mc) 447 { 448 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 449 450 s390mc->ri_allowed = false; 451 ccw_machine_2_7_class_options(mc); 452 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_6); 453 } 454 DEFINE_CCW_MACHINE(2_6, "2.6", false); 455 456 static void ccw_machine_2_5_instance_options(MachineState *machine) 457 { 458 ccw_machine_2_6_instance_options(machine); 459 } 460 461 static void ccw_machine_2_5_class_options(MachineClass *mc) 462 { 463 ccw_machine_2_6_class_options(mc); 464 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_5); 465 } 466 DEFINE_CCW_MACHINE(2_5, "2.5", false); 467 468 static void ccw_machine_2_4_instance_options(MachineState *machine) 469 { 470 ccw_machine_2_5_instance_options(machine); 471 } 472 473 static void ccw_machine_2_4_class_options(MachineClass *mc) 474 { 475 ccw_machine_2_5_class_options(mc); 476 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_4); 477 } 478 DEFINE_CCW_MACHINE(2_4, "2.4", false); 479 480 static void ccw_machine_register_types(void) 481 { 482 type_register_static(&ccw_machine_info); 483 } 484 485 type_init(ccw_machine_register_types) 486