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 s390_flic_init(); 117 118 /* get a BUS */ 119 css_bus = virtual_css_bus_init(); 120 s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline, 121 machine->initrd_filename, "s390-ccw.img", 122 "s390-netboot.img", true); 123 124 dev = qdev_create(NULL, TYPE_S390_PCI_HOST_BRIDGE); 125 object_property_add_child(qdev_get_machine(), TYPE_S390_PCI_HOST_BRIDGE, 126 OBJECT(dev), NULL); 127 qdev_init_nofail(dev); 128 129 /* register hypercalls */ 130 virtio_ccw_register_hcalls(); 131 132 /* init CPUs */ 133 s390_init_cpus(machine); 134 135 if (kvm_enabled()) { 136 kvm_s390_enable_css_support(s390_cpu_addr2state(0)); 137 } 138 /* 139 * Create virtual css and set it as default so that non mcss-e 140 * enabled guests only see virtio devices. 141 */ 142 ret = css_create_css_image(VIRTUAL_CSSID, true); 143 assert(ret == 0); 144 145 /* Create VirtIO network adapters */ 146 s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw"); 147 148 /* Register savevm handler for guest TOD clock */ 149 register_savevm(NULL, "todclock", 0, 1, 150 gtod_save, gtod_load, kvm_state); 151 } 152 153 static void s390_cpu_plug(HotplugHandler *hotplug_dev, 154 DeviceState *dev, Error **errp) 155 { 156 gchar *name; 157 S390CPU *cpu = S390_CPU(dev); 158 CPUState *cs = CPU(dev); 159 160 name = g_strdup_printf("cpu[%i]", cpu->env.cpu_num); 161 object_property_set_link(OBJECT(hotplug_dev), OBJECT(cs), name, 162 errp); 163 g_free(name); 164 } 165 166 static void s390_machine_device_plug(HotplugHandler *hotplug_dev, 167 DeviceState *dev, Error **errp) 168 { 169 if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 170 s390_cpu_plug(hotplug_dev, dev, errp); 171 } 172 } 173 174 static HotplugHandler *s390_get_hotplug_handler(MachineState *machine, 175 DeviceState *dev) 176 { 177 if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { 178 return HOTPLUG_HANDLER(machine); 179 } 180 return NULL; 181 } 182 183 static void s390_hot_add_cpu(const int64_t id, Error **errp) 184 { 185 MachineState *machine = MACHINE(qdev_get_machine()); 186 187 s390x_new_cpu(machine->cpu_model, id, errp); 188 } 189 190 static void ccw_machine_class_init(ObjectClass *oc, void *data) 191 { 192 MachineClass *mc = MACHINE_CLASS(oc); 193 NMIClass *nc = NMI_CLASS(oc); 194 HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); 195 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 196 197 s390mc->ri_allowed = true; 198 s390mc->cpu_model_allowed = true; 199 mc->init = ccw_init; 200 mc->reset = s390_machine_reset; 201 mc->hot_add_cpu = s390_hot_add_cpu; 202 mc->block_default_type = IF_VIRTIO; 203 mc->no_cdrom = 1; 204 mc->no_floppy = 1; 205 mc->no_serial = 1; 206 mc->no_parallel = 1; 207 mc->no_sdcard = 1; 208 mc->use_sclp = 1; 209 mc->max_cpus = 248; 210 mc->get_hotplug_handler = s390_get_hotplug_handler; 211 hc->plug = s390_machine_device_plug; 212 nc->nmi_monitor_handler = s390_nmi; 213 } 214 215 static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp) 216 { 217 S390CcwMachineState *ms = S390_CCW_MACHINE(obj); 218 219 return ms->aes_key_wrap; 220 } 221 222 static inline void machine_set_aes_key_wrap(Object *obj, bool value, 223 Error **errp) 224 { 225 S390CcwMachineState *ms = S390_CCW_MACHINE(obj); 226 227 ms->aes_key_wrap = value; 228 } 229 230 static inline bool machine_get_dea_key_wrap(Object *obj, Error **errp) 231 { 232 S390CcwMachineState *ms = S390_CCW_MACHINE(obj); 233 234 return ms->dea_key_wrap; 235 } 236 237 static inline void machine_set_dea_key_wrap(Object *obj, bool value, 238 Error **errp) 239 { 240 S390CcwMachineState *ms = S390_CCW_MACHINE(obj); 241 242 ms->dea_key_wrap = value; 243 } 244 245 bool ri_allowed(void) 246 { 247 if (kvm_enabled()) { 248 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); 249 if (object_class_dynamic_cast(OBJECT_CLASS(mc), 250 TYPE_S390_CCW_MACHINE)) { 251 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 252 253 return s390mc->ri_allowed; 254 } 255 /* 256 * Make sure the "none" machine can have ri, otherwise it won't * be 257 * unlocked in KVM and therefore the host CPU model might be wrong. 258 */ 259 return true; 260 } 261 return 0; 262 } 263 264 bool cpu_model_allowed(void) 265 { 266 MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); 267 if (object_class_dynamic_cast(OBJECT_CLASS(mc), 268 TYPE_S390_CCW_MACHINE)) { 269 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 270 271 return s390mc->cpu_model_allowed; 272 } 273 /* allow CPU model qmp queries with the "none" machine */ 274 return true; 275 } 276 277 static inline void s390_machine_initfn(Object *obj) 278 { 279 object_property_add_bool(obj, "aes-key-wrap", 280 machine_get_aes_key_wrap, 281 machine_set_aes_key_wrap, NULL); 282 object_property_set_description(obj, "aes-key-wrap", 283 "enable/disable AES key wrapping using the CPACF wrapping key", 284 NULL); 285 object_property_set_bool(obj, true, "aes-key-wrap", NULL); 286 287 object_property_add_bool(obj, "dea-key-wrap", 288 machine_get_dea_key_wrap, 289 machine_set_dea_key_wrap, NULL); 290 object_property_set_description(obj, "dea-key-wrap", 291 "enable/disable DEA key wrapping using the CPACF wrapping key", 292 NULL); 293 object_property_set_bool(obj, true, "dea-key-wrap", NULL); 294 } 295 296 static const TypeInfo ccw_machine_info = { 297 .name = TYPE_S390_CCW_MACHINE, 298 .parent = TYPE_MACHINE, 299 .abstract = true, 300 .instance_size = sizeof(S390CcwMachineState), 301 .instance_init = s390_machine_initfn, 302 .class_size = sizeof(S390CcwMachineClass), 303 .class_init = ccw_machine_class_init, 304 .interfaces = (InterfaceInfo[]) { 305 { TYPE_NMI }, 306 { TYPE_HOTPLUG_HANDLER}, 307 { } 308 }, 309 }; 310 311 #define DEFINE_CCW_MACHINE(suffix, verstr, latest) \ 312 static void ccw_machine_##suffix##_class_init(ObjectClass *oc, \ 313 void *data) \ 314 { \ 315 MachineClass *mc = MACHINE_CLASS(oc); \ 316 ccw_machine_##suffix##_class_options(mc); \ 317 mc->desc = "VirtIO-ccw based S390 machine v" verstr; \ 318 if (latest) { \ 319 mc->alias = "s390-ccw-virtio"; \ 320 mc->is_default = 1; \ 321 } \ 322 } \ 323 static void ccw_machine_##suffix##_instance_init(Object *obj) \ 324 { \ 325 MachineState *machine = MACHINE(obj); \ 326 ccw_machine_##suffix##_instance_options(machine); \ 327 } \ 328 static const TypeInfo ccw_machine_##suffix##_info = { \ 329 .name = MACHINE_TYPE_NAME("s390-ccw-virtio-" verstr), \ 330 .parent = TYPE_S390_CCW_MACHINE, \ 331 .class_init = ccw_machine_##suffix##_class_init, \ 332 .instance_init = ccw_machine_##suffix##_instance_init, \ 333 }; \ 334 static void ccw_machine_register_##suffix(void) \ 335 { \ 336 type_register_static(&ccw_machine_##suffix##_info); \ 337 } \ 338 type_init(ccw_machine_register_##suffix) 339 340 #define CCW_COMPAT_2_9 \ 341 HW_COMPAT_2_9 342 343 #define CCW_COMPAT_2_8 \ 344 HW_COMPAT_2_8 \ 345 {\ 346 .driver = TYPE_S390_FLIC_COMMON,\ 347 .property = "adapter_routes_max_batch",\ 348 .value = "64",\ 349 }, 350 351 #define CCW_COMPAT_2_7 \ 352 HW_COMPAT_2_7 353 354 #define CCW_COMPAT_2_6 \ 355 HW_COMPAT_2_6 \ 356 {\ 357 .driver = TYPE_S390_IPL,\ 358 .property = "iplbext_migration",\ 359 .value = "off",\ 360 }, {\ 361 .driver = TYPE_VIRTUAL_CSS_BRIDGE,\ 362 .property = "css_dev_path",\ 363 .value = "off",\ 364 }, 365 366 #define CCW_COMPAT_2_5 \ 367 HW_COMPAT_2_5 368 369 #define CCW_COMPAT_2_4 \ 370 HW_COMPAT_2_4 \ 371 {\ 372 .driver = TYPE_S390_SKEYS,\ 373 .property = "migration-enabled",\ 374 .value = "off",\ 375 },{\ 376 .driver = "virtio-blk-ccw",\ 377 .property = "max_revision",\ 378 .value = "0",\ 379 },{\ 380 .driver = "virtio-balloon-ccw",\ 381 .property = "max_revision",\ 382 .value = "0",\ 383 },{\ 384 .driver = "virtio-serial-ccw",\ 385 .property = "max_revision",\ 386 .value = "0",\ 387 },{\ 388 .driver = "virtio-9p-ccw",\ 389 .property = "max_revision",\ 390 .value = "0",\ 391 },{\ 392 .driver = "virtio-rng-ccw",\ 393 .property = "max_revision",\ 394 .value = "0",\ 395 },{\ 396 .driver = "virtio-net-ccw",\ 397 .property = "max_revision",\ 398 .value = "0",\ 399 },{\ 400 .driver = "virtio-scsi-ccw",\ 401 .property = "max_revision",\ 402 .value = "0",\ 403 },{\ 404 .driver = "vhost-scsi-ccw",\ 405 .property = "max_revision",\ 406 .value = "0",\ 407 }, 408 409 static void ccw_machine_2_10_instance_options(MachineState *machine) 410 { 411 } 412 413 static void ccw_machine_2_10_class_options(MachineClass *mc) 414 { 415 } 416 DEFINE_CCW_MACHINE(2_10, "2.10", true); 417 418 static void ccw_machine_2_9_instance_options(MachineState *machine) 419 { 420 ccw_machine_2_10_instance_options(machine); 421 } 422 423 static void ccw_machine_2_9_class_options(MachineClass *mc) 424 { 425 ccw_machine_2_10_class_options(mc); 426 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_9); 427 } 428 DEFINE_CCW_MACHINE(2_9, "2.9", false); 429 430 static void ccw_machine_2_8_instance_options(MachineState *machine) 431 { 432 ccw_machine_2_9_instance_options(machine); 433 } 434 435 static void ccw_machine_2_8_class_options(MachineClass *mc) 436 { 437 ccw_machine_2_9_class_options(mc); 438 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_8); 439 } 440 DEFINE_CCW_MACHINE(2_8, "2.8", false); 441 442 static void ccw_machine_2_7_instance_options(MachineState *machine) 443 { 444 ccw_machine_2_8_instance_options(machine); 445 } 446 447 static void ccw_machine_2_7_class_options(MachineClass *mc) 448 { 449 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 450 451 s390mc->cpu_model_allowed = false; 452 ccw_machine_2_8_class_options(mc); 453 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_7); 454 } 455 DEFINE_CCW_MACHINE(2_7, "2.7", false); 456 457 static void ccw_machine_2_6_instance_options(MachineState *machine) 458 { 459 ccw_machine_2_7_instance_options(machine); 460 } 461 462 static void ccw_machine_2_6_class_options(MachineClass *mc) 463 { 464 S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); 465 466 s390mc->ri_allowed = false; 467 ccw_machine_2_7_class_options(mc); 468 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_6); 469 } 470 DEFINE_CCW_MACHINE(2_6, "2.6", false); 471 472 static void ccw_machine_2_5_instance_options(MachineState *machine) 473 { 474 ccw_machine_2_6_instance_options(machine); 475 } 476 477 static void ccw_machine_2_5_class_options(MachineClass *mc) 478 { 479 ccw_machine_2_6_class_options(mc); 480 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_5); 481 } 482 DEFINE_CCW_MACHINE(2_5, "2.5", false); 483 484 static void ccw_machine_2_4_instance_options(MachineState *machine) 485 { 486 ccw_machine_2_5_instance_options(machine); 487 } 488 489 static void ccw_machine_2_4_class_options(MachineClass *mc) 490 { 491 ccw_machine_2_5_class_options(mc); 492 SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_4); 493 } 494 DEFINE_CCW_MACHINE(2_4, "2.4", false); 495 496 static void ccw_machine_register_types(void) 497 { 498 type_register_static(&ccw_machine_info); 499 } 500 501 type_init(ccw_machine_register_types) 502