hw/s390x/s390-virtio-ccw.c

   1 /*
   2  * virtio ccw machine
   3  *
   4  * Copyright 2012, 2020 IBM Corp.
   5  * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
   6  * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
   7  *            Janosch Frank <frankja@linux.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or (at
  10  * your option) any later version. See the COPYING file in the top-level
  11  * directory.
  12  */
  13
  14 #include "qemu/osdep.h"
  15 #include "qapi/error.h"
  16 #include "cpu.h"
  17 #include "hw/boards.h"
  18 #include "exec/address-spaces.h"
  19 #include "exec/ram_addr.h"
  20 #include "hw/s390x/s390-virtio-hcall.h"
  21 #include "hw/s390x/sclp.h"
  22 #include "hw/s390x/s390_flic.h"
  23 #include "hw/s390x/ioinst.h"
  24 #include "hw/s390x/css.h"
  25 #include "virtio-ccw.h"
  26 #include "qemu/config-file.h"
  27 #include "qemu/ctype.h"
  28 #include "qemu/error-report.h"
  29 #include "qemu/option.h"
  30 #include "qemu/qemu-print.h"
  31 #include "s390-pci-bus.h"
  32 #include "sysemu/reset.h"
  33 #include "hw/s390x/storage-keys.h"
  34 #include "hw/s390x/storage-attributes.h"
  35 #include "hw/s390x/event-facility.h"
  36 #include "ipl.h"
  37 #include "hw/s390x/s390-virtio-ccw.h"
  38 #include "hw/s390x/css-bridge.h"
  39 #include "hw/s390x/ap-bridge.h"
  40 #include "migration/register.h"
  41 #include "cpu_models.h"
  42 #include "hw/nmi.h"
  43 #include "hw/qdev-properties.h"
  44 #include "hw/s390x/tod.h"
  45 #include "sysemu/sysemu.h"
  46 #include "hw/s390x/pv.h"
  47 #include "migration/blocker.h"
  48
  49 static Error *pv_mig_blocker;
  50
  51 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
  52 {
  53     static MachineState *ms;
  54
  55     if (!ms) {
  56         ms = MACHINE(qdev_get_machine());
  57         g_assert(ms->possible_cpus);
  58     }
  59
  60     /* CPU address corresponds to the core_id and the index */
  61     if (cpu_addr >= ms->possible_cpus->len) {
  62         return NULL;
  63     }
  64     return S390_CPU(ms->possible_cpus->cpus[cpu_addr].cpu);
  65 }
  66
  67 static S390CPU *s390x_new_cpu(const char *typename, uint32_t core_id,
  68                               Error **errp)
  69 {
  70     S390CPU *cpu = S390_CPU(object_new(typename));
  71     S390CPU *ret = NULL;
  72
  73     if (!object_property_set_int(OBJECT(cpu), "core-id", core_id, errp)) {
  74         goto out;
  75     }
  76     if (!qdev_realize(DEVICE(cpu), NULL, errp)) {
  77         goto out;
  78     }
  79     ret = cpu;
  80
  81 out:
  82     object_unref(OBJECT(cpu));
  83     return ret;
  84 }
  85
  86 static void s390_init_cpus(MachineState *machine)
  87 {
  88     MachineClass *mc = MACHINE_GET_CLASS(machine);
  89     int i;
  90
  91     /* initialize possible_cpus */
  92     mc->possible_cpu_arch_ids(machine);
  93
  94     for (i = 0; i < machine->smp.cpus; i++) {
  95         s390x_new_cpu(machine->cpu_type, i, &error_fatal);
  96     }
  97 }
  98
  99 static const char *const reset_dev_types[] = {
 100     TYPE_VIRTUAL_CSS_BRIDGE,
 101     "s390-sclp-event-facility",
 102     "s390-flic",
 103     "diag288",
 104     TYPE_S390_PCI_HOST_BRIDGE,
 105 };
 106
 107 static void subsystem_reset(void)
 108 {
 109     DeviceState *dev;
 110     int i;
 111
 112     for (i = 0; i < ARRAY_SIZE(reset_dev_types); i++) {
 113         dev = DEVICE(object_resolve_path_type("", reset_dev_types[i], NULL));
 114         if (dev) {
 115             qdev_reset_all(dev);
 116         }
 117     }
 118 }
 119
 120 static int virtio_ccw_hcall_notify(const uint64_t *args)
 121 {
 122     uint64_t subch_id = args[0];
 123     uint64_t queue = args[1];
 124     SubchDev *sch;
 125     int cssid, ssid, schid, m;
 126
 127     if (ioinst_disassemble_sch_ident(subch_id, &m, &cssid, &ssid, &schid)) {
 128         return -EINVAL;
 129     }
 130     sch = css_find_subch(m, cssid, ssid, schid);
 131     if (!sch || !css_subch_visible(sch)) {
 132         return -EINVAL;
 133     }
 134     if (queue >= VIRTIO_QUEUE_MAX) {
 135         return -EINVAL;
 136     }
 137     virtio_queue_notify(virtio_ccw_get_vdev(sch), queue);
 138     return 0;
 139
 140 }
 141
 142 static int virtio_ccw_hcall_early_printk(const uint64_t *args)
 143 {
 144     uint64_t mem = args[0];
 145
 146     if (mem < ram_size) {
 147         /* Early printk */
 148         return 0;
 149     }
 150     return -EINVAL;
 151 }
 152
 153 static void virtio_ccw_register_hcalls(void)
 154 {
 155     s390_register_virtio_hypercall(KVM_S390_VIRTIO_CCW_NOTIFY,
 156                                    virtio_ccw_hcall_notify);
 157     /* Tolerate early printk. */
 158     s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY,
 159                                    virtio_ccw_hcall_early_printk);
 160 }
 161
 162 static void s390_memory_init(MemoryRegion *ram)
 163 {
 164     MemoryRegion *sysmem = get_system_memory();
 165
 166     /* allocate RAM for core */
 167     memory_region_add_subregion(sysmem, 0, ram);
 168
 169     /*
 170      * Configure the maximum page size. As no memory devices were created
 171      * yet, this is the page size of initial memory only.
 172      */
 173     s390_set_max_pagesize(qemu_maxrampagesize(), &error_fatal);
 174     /* Initialize storage key device */
 175     s390_skeys_init();
 176     /* Initialize storage attributes device */
 177     s390_stattrib_init();
 178 }
 179
 180 static void s390_init_ipl_dev(const char *kernel_filename,
 181                               const char *kernel_cmdline,
 182                               const char *initrd_filename, const char *firmware,
 183                               const char *netboot_fw, bool enforce_bios)
 184 {
 185     Object *new = object_new(TYPE_S390_IPL);
 186     DeviceState *dev = DEVICE(new);
 187     char *netboot_fw_prop;
 188
 189     if (kernel_filename) {
 190         qdev_prop_set_string(dev, "kernel", kernel_filename);
 191     }
 192     if (initrd_filename) {
 193         qdev_prop_set_string(dev, "initrd", initrd_filename);
 194     }
 195     qdev_prop_set_string(dev, "cmdline", kernel_cmdline);
 196     qdev_prop_set_string(dev, "firmware", firmware);
 197     qdev_prop_set_bit(dev, "enforce_bios", enforce_bios);
 198     netboot_fw_prop = object_property_get_str(new, "netboot_fw", &error_abort);
 199     if (!strlen(netboot_fw_prop)) {
 200         qdev_prop_set_string(dev, "netboot_fw", netboot_fw);
 201     }
 202     g_free(netboot_fw_prop);
 203     object_property_add_child(qdev_get_machine(), TYPE_S390_IPL,
 204                               new);
 205     object_unref(new);
 206     qdev_realize(dev, NULL, &error_fatal);
 207 }
 208
 209 static void s390_create_virtio_net(BusState *bus, const char *name)
 210 {
 211     int i;
 212
 213     for (i = 0; i < nb_nics; i++) {
 214         NICInfo *nd = &nd_table[i];
 215         DeviceState *dev;
 216
 217         if (!nd->model) {
 218             nd->model = g_strdup("virtio");
 219         }
 220
 221         qemu_check_nic_model(nd, "virtio");
 222
 223         dev = qdev_new(name);
 224         qdev_set_nic_properties(dev, nd);
 225         qdev_realize_and_unref(dev, bus, &error_fatal);
 226     }
 227 }
 228
 229 static void s390_create_sclpconsole(const char *type, Chardev *chardev)
 230 {
 231     DeviceState *dev;
 232
 233     dev = qdev_new(type);
 234     qdev_prop_set_chr(dev, "chardev", chardev);
 235     qdev_realize_and_unref(dev, sclp_get_event_facility_bus(), &error_fatal);
 236 }
 237
 238 static void ccw_init(MachineState *machine)
 239 {
 240     int ret;
 241     VirtualCssBus *css_bus;
 242     DeviceState *dev;
 243
 244     s390_sclp_init();
 245     /* init memory + setup max page size. Required for the CPU model */
 246     s390_memory_init(machine->ram);
 247
 248     /* init CPUs (incl. CPU model) early so s390_has_feature() works */
 249     s390_init_cpus(machine);
 250
 251     s390_flic_init();
 252
 253     /* init the SIGP facility */
 254     s390_init_sigp();
 255
 256     /* create AP bridge and bus(es) */
 257     s390_init_ap();
 258
 259     /* get a BUS */
 260     css_bus = virtual_css_bus_init();
 261     s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
 262                       machine->initrd_filename, "s390-ccw.img",
 263                       "s390-netboot.img", true);
 264
 265     dev = qdev_new(TYPE_S390_PCI_HOST_BRIDGE);
 266     object_property_add_child(qdev_get_machine(), TYPE_S390_PCI_HOST_BRIDGE,
 267                               OBJECT(dev));
 268     sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
 269
 270     /* register hypercalls */
 271     virtio_ccw_register_hcalls();
 272
 273     s390_enable_css_support(s390_cpu_addr2state(0));
 274
 275     ret = css_create_css_image(VIRTUAL_CSSID, true);
 276
 277     assert(ret == 0);
 278     if (css_migration_enabled()) {
 279         css_register_vmstate();
 280     }
 281
 282     /* Create VirtIO network adapters */
 283     s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw");
 284
 285     /* init consoles */
 286     if (serial_hd(0)) {
 287         s390_create_sclpconsole("sclpconsole", serial_hd(0));
 288     }
 289     if (serial_hd(1)) {
 290         s390_create_sclpconsole("sclplmconsole", serial_hd(1));
 291     }
 292
 293     /* init the TOD clock */
 294     s390_init_tod();
 295 }
 296
 297 static void s390_cpu_plug(HotplugHandler *hotplug_dev,
 298                         DeviceState *dev, Error **errp)
 299 {
 300     MachineState *ms = MACHINE(hotplug_dev);
 301     S390CPU *cpu = S390_CPU(dev);
 302
 303     g_assert(!ms->possible_cpus->cpus[cpu->env.core_id].cpu);
 304     ms->possible_cpus->cpus[cpu->env.core_id].cpu = OBJECT(dev);
 305
 306     if (dev->hotplugged) {
 307         raise_irq_cpu_hotplug();
 308     }
 309 }
 310
 311 static inline void s390_do_cpu_ipl(CPUState *cs, run_on_cpu_data arg)
 312 {
 313     S390CPU *cpu = S390_CPU(cs);
 314
 315     s390_ipl_prepare_cpu(cpu);
 316     s390_cpu_set_state(S390_CPU_STATE_OPERATING, cpu);
 317 }
 318
 319 static void s390_machine_unprotect(S390CcwMachineState *ms)
 320 {
 321     s390_pv_vm_disable();
 322     ms->pv = false;
 323     migrate_del_blocker(pv_mig_blocker);
 324     error_free_or_abort(&pv_mig_blocker);
 325     ram_block_discard_disable(false);
 326 }
 327
 328 static int s390_machine_protect(S390CcwMachineState *ms)
 329 {
 330     Error *local_err = NULL;
 331     int rc;
 332
 333    /*
 334     * Discarding of memory in RAM blocks does not work as expected with
 335     * protected VMs. Sharing and unsharing pages would be required. Disable
 336     * it for now, until until we have a solution to make at least Linux
 337     * guests either support it (e.g., virtio-balloon) or fail gracefully.
 338     */
 339     rc = ram_block_discard_disable(true);
 340     if (rc) {
 341         error_report("protected VMs: cannot disable RAM discard");
 342         return rc;
 343     }
 344
 345     error_setg(&pv_mig_blocker,
 346                "protected VMs are currently not migrateable.");
 347     rc = migrate_add_blocker(pv_mig_blocker, &local_err);
 348     if (rc) {
 349         ram_block_discard_disable(false);
 350         error_report_err(local_err);
 351         error_free_or_abort(&pv_mig_blocker);
 352         return rc;
 353     }
 354
 355     /* Create SE VM */
 356     rc = s390_pv_vm_enable();
 357     if (rc) {
 358         ram_block_discard_disable(false);
 359         migrate_del_blocker(pv_mig_blocker);
 360         error_free_or_abort(&pv_mig_blocker);
 361         return rc;
 362     }
 363
 364     ms->pv = true;
 365
 366     /* Set SE header and unpack */
 367     rc = s390_ipl_prepare_pv_header();
 368     if (rc) {
 369         goto out_err;
 370     }
 371
 372     /* Decrypt image */
 373     rc = s390_ipl_pv_unpack();
 374     if (rc) {
 375         goto out_err;
 376     }
 377
 378     /* Verify integrity */
 379     rc = s390_pv_verify();
 380     if (rc) {
 381         goto out_err;
 382     }
 383     return rc;
 384
 385 out_err:
 386     s390_machine_unprotect(ms);
 387     return rc;
 388 }
 389
 390 static void s390_pv_prepare_reset(S390CcwMachineState *ms)
 391 {
 392     CPUState *cs;
 393
 394     if (!s390_is_pv()) {
 395         return;
 396     }
 397     /* Unsharing requires all cpus to be stopped */
 398     CPU_FOREACH(cs) {
 399         s390_cpu_set_state(S390_CPU_STATE_STOPPED, S390_CPU(cs));
 400     }
 401     s390_pv_unshare();
 402     s390_pv_prep_reset();
 403 }
 404
 405 static void s390_machine_reset(MachineState *machine)
 406 {
 407     S390CcwMachineState *ms = S390_CCW_MACHINE(machine);
 408     enum s390_reset reset_type;
 409     CPUState *cs, *t;
 410     S390CPU *cpu;
 411
 412     /* get the reset parameters, reset them once done */
 413     s390_ipl_get_reset_request(&cs, &reset_type);
 414
 415     /* all CPUs are paused and synchronized at this point */
 416     s390_cmma_reset();
 417
 418     cpu = S390_CPU(cs);
 419
 420     switch (reset_type) {
 421     case S390_RESET_EXTERNAL:
 422     case S390_RESET_REIPL:
 423         if (s390_is_pv()) {
 424             s390_machine_unprotect(ms);
 425         }
 426
 427         qemu_devices_reset();
 428         s390_crypto_reset();
 429
 430         /* configure and start the ipl CPU only */
 431         run_on_cpu(cs, s390_do_cpu_ipl, RUN_ON_CPU_NULL);
 432         break;
 433     case S390_RESET_MODIFIED_CLEAR:
 434         /*
 435          * Susbsystem reset needs to be done before we unshare memory
 436          * and lose access to VIRTIO structures in guest memory.
 437          */
 438         subsystem_reset();
 439         s390_crypto_reset();
 440         s390_pv_prepare_reset(ms);
 441         CPU_FOREACH(t) {
 442             run_on_cpu(t, s390_do_cpu_full_reset, RUN_ON_CPU_NULL);
 443         }
 444         run_on_cpu(cs, s390_do_cpu_load_normal, RUN_ON_CPU_NULL);
 445         break;
 446     case S390_RESET_LOAD_NORMAL:
 447         /*
 448          * Susbsystem reset needs to be done before we unshare memory
 449          * and lose access to VIRTIO structures in guest memory.
 450          */
 451         subsystem_reset();
 452         s390_pv_prepare_reset(ms);
 453         CPU_FOREACH(t) {
 454             if (t == cs) {
 455                 continue;
 456             }
 457             run_on_cpu(t, s390_do_cpu_reset, RUN_ON_CPU_NULL);
 458         }
 459         run_on_cpu(cs, s390_do_cpu_initial_reset, RUN_ON_CPU_NULL);
 460         run_on_cpu(cs, s390_do_cpu_load_normal, RUN_ON_CPU_NULL);
 461         break;
 462     case S390_RESET_PV: /* Subcode 10 */
 463         subsystem_reset();
 464         s390_crypto_reset();
 465
 466         CPU_FOREACH(t) {
 467             if (t == cs) {
 468                 continue;
 469             }
 470             run_on_cpu(t, s390_do_cpu_full_reset, RUN_ON_CPU_NULL);
 471         }
 472         run_on_cpu(cs, s390_do_cpu_reset, RUN_ON_CPU_NULL);
 473
 474         if (s390_machine_protect(ms)) {
 475             s390_pv_inject_reset_error(cs);
 476             /*
 477              * Continue after the diag308 so the guest knows something
 478              * went wrong.
 479              */
 480             s390_cpu_set_state(S390_CPU_STATE_OPERATING, cpu);
 481             return;
 482         }
 483
 484         run_on_cpu(cs, s390_do_cpu_load_normal, RUN_ON_CPU_NULL);
 485         break;
 486     default:
 487         g_assert_not_reached();
 488     }
 489     s390_ipl_clear_reset_request();
 490 }
 491
 492 static void s390_machine_device_plug(HotplugHandler *hotplug_dev,
 493                                      DeviceState *dev, Error **errp)
 494 {
 495     if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 496         s390_cpu_plug(hotplug_dev, dev, errp);
 497     }
 498 }
 499
 500 static void s390_machine_device_unplug_request(HotplugHandler *hotplug_dev,
 501                                                DeviceState *dev, Error **errp)
 502 {
 503     if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 504         error_setg(errp, "CPU hot unplug not supported on this machine");
 505         return;
 506     }
 507 }
 508
 509 static CpuInstanceProperties s390_cpu_index_to_props(MachineState *ms,
 510                                                      unsigned cpu_index)
 511 {
 512     MachineClass *mc = MACHINE_GET_CLASS(ms);
 513     const CPUArchIdList *possible_cpus = mc->possible_cpu_arch_ids(ms);
 514
 515     assert(cpu_index < possible_cpus->len);
 516     return possible_cpus->cpus[cpu_index].props;
 517 }
 518
 519 static const CPUArchIdList *s390_possible_cpu_arch_ids(MachineState *ms)
 520 {
 521     int i;
 522     unsigned int max_cpus = ms->smp.max_cpus;
 523
 524     if (ms->possible_cpus) {
 525         g_assert(ms->possible_cpus && ms->possible_cpus->len == max_cpus);
 526         return ms->possible_cpus;
 527     }
 528
 529     ms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) +
 530                                   sizeof(CPUArchId) * max_cpus);
 531     ms->possible_cpus->len = max_cpus;
 532     for (i = 0; i < ms->possible_cpus->len; i++) {
 533         ms->possible_cpus->cpus[i].type = ms->cpu_type;
 534         ms->possible_cpus->cpus[i].vcpus_count = 1;
 535         ms->possible_cpus->cpus[i].arch_id = i;
 536         ms->possible_cpus->cpus[i].props.has_core_id = true;
 537         ms->possible_cpus->cpus[i].props.core_id = i;
 538     }
 539
 540     return ms->possible_cpus;
 541 }
 542
 543 static HotplugHandler *s390_get_hotplug_handler(MachineState *machine,
 544                                                 DeviceState *dev)
 545 {
 546     if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
 547         return HOTPLUG_HANDLER(machine);
 548     }
 549     return NULL;
 550 }
 551
 552 static void s390_nmi(NMIState *n, int cpu_index, Error **errp)
 553 {
 554     CPUState *cs = qemu_get_cpu(cpu_index);
 555
 556     s390_cpu_restart(S390_CPU(cs));
 557 }
 558
 559 static ram_addr_t s390_fixup_ram_size(ram_addr_t sz)
 560 {
 561     /* same logic as in sclp.c */
 562     int increment_size = 20;
 563     ram_addr_t newsz;
 564
 565     while ((sz >> increment_size) > MAX_STORAGE_INCREMENTS) {
 566         increment_size++;
 567     }
 568     newsz = sz >> increment_size << increment_size;
 569
 570     if (sz != newsz) {
 571         qemu_printf("Ram size %" PRIu64 "MB was fixed up to %" PRIu64
 572                     "MB to match machine restrictions. Consider updating "
 573                     "the guest definition.\n", (uint64_t) (sz / MiB),
 574                     (uint64_t) (newsz / MiB));
 575     }
 576     return newsz;
 577 }
 578
 579 static void ccw_machine_class_init(ObjectClass *oc, void *data)
 580 {
 581     MachineClass *mc = MACHINE_CLASS(oc);
 582     NMIClass *nc = NMI_CLASS(oc);
 583     HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
 584     S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc);
 585
 586     s390mc->ri_allowed = true;
 587     s390mc->cpu_model_allowed = true;
 588     s390mc->css_migration_enabled = true;
 589     s390mc->hpage_1m_allowed = true;
 590     mc->init = ccw_init;
 591     mc->reset = s390_machine_reset;
 592     mc->block_default_type = IF_VIRTIO;
 593     mc->no_cdrom = 1;
 594     mc->no_floppy = 1;
 595     mc->no_parallel = 1;
 596     mc->no_sdcard = 1;
 597     mc->max_cpus = S390_MAX_CPUS;
 598     mc->has_hotpluggable_cpus = true;
 599     assert(!mc->get_hotplug_handler);
 600     mc->get_hotplug_handler = s390_get_hotplug_handler;
 601     mc->cpu_index_to_instance_props = s390_cpu_index_to_props;
 602     mc->possible_cpu_arch_ids = s390_possible_cpu_arch_ids;
 603     /* it is overridden with 'host' cpu *in kvm_arch_init* */
 604     mc->default_cpu_type = S390_CPU_TYPE_NAME("qemu");
 605     hc->plug = s390_machine_device_plug;
 606     hc->unplug_request = s390_machine_device_unplug_request;
 607     nc->nmi_monitor_handler = s390_nmi;
 608     mc->default_ram_id = "s390.ram";
 609 }
 610
 611 static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
 612 {
 613     S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
 614
 615     return ms->aes_key_wrap;
 616 }
 617
 618 static inline void machine_set_aes_key_wrap(Object *obj, bool value,
 619                                             Error **errp)
 620 {
 621     S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
 622
 623     ms->aes_key_wrap = value;
 624 }
 625
 626 static inline bool machine_get_dea_key_wrap(Object *obj, Error **errp)
 627 {
 628     S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
 629
 630     return ms->dea_key_wrap;
 631 }
 632
 633 static inline void machine_set_dea_key_wrap(Object *obj, bool value,
 634                                             Error **errp)
 635 {
 636     S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
 637
 638     ms->dea_key_wrap = value;
 639 }
 640
 641 static S390CcwMachineClass *current_mc;
 642
 643 /*
 644  * Get the class of the s390-ccw-virtio machine that is currently in use.
 645  * Note: libvirt is using the "none" machine to probe for the features of the
 646  * host CPU, so in case this is called with the "none" machine, the function
 647  * returns the TYPE_S390_CCW_MACHINE base class. In this base class, all the
 648  * various "*_allowed" variables are enabled, so that the *_allowed() wrappers
 649  * below return the correct default value for the "none" machine.
 650  *
 651  * Attention! Do *not* add additional new wrappers for CPU features (e.g. like
 652  * the ri_allowed() wrapper) via this mechanism anymore. CPU features should
 653  * be handled via the CPU models, i.e. checking with cpu_model_allowed() during
 654  * CPU initialization and s390_has_feat() later should be sufficient.
 655  */
 656 static S390CcwMachineClass *get_machine_class(void)
 657 {
 658     if (unlikely(!current_mc)) {
 659         /*
 660         * No s390 ccw machine was instantiated, we are likely to
 661         * be called for the 'none' machine. The properties will
 662         * have their after-initialization values.
 663         */
 664         current_mc = S390_CCW_MACHINE_CLASS(
 665                      object_class_by_name(TYPE_S390_CCW_MACHINE));
 666     }
 667     return current_mc;
 668 }
 669
 670 bool ri_allowed(void)
 671 {
 672     return get_machine_class()->ri_allowed;
 673 }
 674
 675 bool cpu_model_allowed(void)
 676 {
 677     return get_machine_class()->cpu_model_allowed;
 678 }
 679
 680 bool hpage_1m_allowed(void)
 681 {
 682     return get_machine_class()->hpage_1m_allowed;
 683 }
 684
 685 static char *machine_get_loadparm(Object *obj, Error **errp)
 686 {
 687     S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
 688
 689     /* make a NUL-terminated string */
 690     return g_strndup((char *) ms->loadparm, sizeof(ms->loadparm));
 691 }
 692
 693 static void machine_set_loadparm(Object *obj, const char *val, Error **errp)
 694 {
 695     S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
 696     int i;
 697
 698     for (i = 0; i < sizeof(ms->loadparm) && val[i]; i++) {
 699         uint8_t c = qemu_toupper(val[i]); /* mimic HMC */
 700
 701         if (('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || (c == '.') ||
 702             (c == ' ')) {
 703             ms->loadparm[i] = c;
 704         } else {
 705             error_setg(errp, "LOADPARM: invalid character '%c' (ASCII 0x%02x)",
 706                        c, c);
 707             return;
 708         }
 709     }
 710
 711     for (; i < sizeof(ms->loadparm); i++) {
 712         ms->loadparm[i] = ' '; /* pad right with spaces */
 713     }
 714 }
 715 static inline void s390_machine_initfn(Object *obj)
 716 {
 717     object_property_add_bool(obj, "aes-key-wrap",
 718                              machine_get_aes_key_wrap,
 719                              machine_set_aes_key_wrap);
 720     object_property_set_description(obj, "aes-key-wrap",
 721             "enable/disable AES key wrapping using the CPACF wrapping key");
 722     object_property_set_bool(obj, "aes-key-wrap", true, NULL);
 723
 724     object_property_add_bool(obj, "dea-key-wrap",
 725                              machine_get_dea_key_wrap,
 726                              machine_set_dea_key_wrap);
 727     object_property_set_description(obj, "dea-key-wrap",
 728             "enable/disable DEA key wrapping using the CPACF wrapping key");
 729     object_property_set_bool(obj, "dea-key-wrap", true, NULL);
 730     object_property_add_str(obj, "loadparm",
 731             machine_get_loadparm, machine_set_loadparm);
 732     object_property_set_description(obj, "loadparm",
 733             "Up to 8 chars in set of [A-Za-z0-9. ] (lower case chars converted"
 734             " to upper case) to pass to machine loader, boot manager,"
 735             " and guest kernel");
 736 }
 737
 738 static const TypeInfo ccw_machine_info = {
 739     .name          = TYPE_S390_CCW_MACHINE,
 740     .parent        = TYPE_MACHINE,
 741     .abstract      = true,
 742     .instance_size = sizeof(S390CcwMachineState),
 743     .instance_init = s390_machine_initfn,
 744     .class_size = sizeof(S390CcwMachineClass),
 745     .class_init    = ccw_machine_class_init,
 746     .interfaces = (InterfaceInfo[]) {
 747         { TYPE_NMI },
 748         { TYPE_HOTPLUG_HANDLER},
 749         { }
 750     },
 751 };
 752
 753 bool css_migration_enabled(void)
 754 {
 755     return get_machine_class()->css_migration_enabled;
 756 }
 757
 758 #define DEFINE_CCW_MACHINE(suffix, verstr, latest)                            \
 759     static void ccw_machine_##suffix##_class_init(ObjectClass *oc,            \
 760                                                   void *data)                 \
 761     {                                                                         \
 762         MachineClass *mc = MACHINE_CLASS(oc);                                 \
 763         ccw_machine_##suffix##_class_options(mc);                             \
 764         mc->desc = "VirtIO-ccw based S390 machine v" verstr;                  \
 765         if (latest) {                                                         \
 766             mc->alias = "s390-ccw-virtio";                                    \
 767             mc->is_default = true;                                            \
 768         }                                                                     \
 769     }                                                                         \
 770     static void ccw_machine_##suffix##_instance_init(Object *obj)             \
 771     {                                                                         \
 772         MachineState *machine = MACHINE(obj);                                 \
 773         current_mc = S390_CCW_MACHINE_CLASS(MACHINE_GET_CLASS(machine));          \
 774         ccw_machine_##suffix##_instance_options(machine);                     \
 775     }                                                                         \
 776     static const TypeInfo ccw_machine_##suffix##_info = {                     \
 777         .name = MACHINE_TYPE_NAME("s390-ccw-virtio-" verstr),                 \
 778         .parent = TYPE_S390_CCW_MACHINE,                                      \
 779         .class_init = ccw_machine_##suffix##_class_init,                      \
 780         .instance_init = ccw_machine_##suffix##_instance_init,                \
 781     };                                                                        \
 782     static void ccw_machine_register_##suffix(void)                           \
 783     {                                                                         \
 784         type_register_static(&ccw_machine_##suffix##_info);                   \
 785     }                                                                         \
 786     type_init(ccw_machine_register_##suffix)
 787
 788 static void ccw_machine_5_2_instance_options(MachineState *machine)
 789 {
 790 }
 791
 792 static void ccw_machine_5_2_class_options(MachineClass *mc)
 793 {
 794 }
 795 DEFINE_CCW_MACHINE(5_2, "5.2", true);
 796
 797 static void ccw_machine_5_1_instance_options(MachineState *machine)
 798 {
 799     ccw_machine_5_2_instance_options(machine);
 800 }
 801
 802 static void ccw_machine_5_1_class_options(MachineClass *mc)
 803 {
 804     ccw_machine_5_2_class_options(mc);
 805     compat_props_add(mc->compat_props, hw_compat_5_1, hw_compat_5_1_len);
 806 }
 807 DEFINE_CCW_MACHINE(5_1, "5.1", false);
 808
 809 static void ccw_machine_5_0_instance_options(MachineState *machine)
 810 {
 811     ccw_machine_5_1_instance_options(machine);
 812 }
 813
 814 static void ccw_machine_5_0_class_options(MachineClass *mc)
 815 {
 816     ccw_machine_5_1_class_options(mc);
 817     compat_props_add(mc->compat_props, hw_compat_5_0, hw_compat_5_0_len);
 818 }
 819 DEFINE_CCW_MACHINE(5_0, "5.0", false);
 820
 821 static void ccw_machine_4_2_instance_options(MachineState *machine)
 822 {
 823     ccw_machine_5_0_instance_options(machine);
 824 }
 825
 826 static void ccw_machine_4_2_class_options(MachineClass *mc)
 827 {
 828     ccw_machine_5_0_class_options(mc);
 829     mc->fixup_ram_size = s390_fixup_ram_size;
 830     compat_props_add(mc->compat_props, hw_compat_4_2, hw_compat_4_2_len);
 831 }
 832 DEFINE_CCW_MACHINE(4_2, "4.2", false);
 833
 834 static void ccw_machine_4_1_instance_options(MachineState *machine)
 835 {
 836     static const S390FeatInit qemu_cpu_feat = { S390_FEAT_LIST_QEMU_V4_1 };
 837     ccw_machine_4_2_instance_options(machine);
 838     s390_set_qemu_cpu_model(0x2964, 13, 2, qemu_cpu_feat);
 839 }
 840
 841 static void ccw_machine_4_1_class_options(MachineClass *mc)
 842 {
 843     ccw_machine_4_2_class_options(mc);
 844     compat_props_add(mc->compat_props, hw_compat_4_1, hw_compat_4_1_len);
 845 }
 846 DEFINE_CCW_MACHINE(4_1, "4.1", false);
 847
 848 static void ccw_machine_4_0_instance_options(MachineState *machine)
 849 {
 850     static const S390FeatInit qemu_cpu_feat = { S390_FEAT_LIST_QEMU_V4_0 };
 851     ccw_machine_4_1_instance_options(machine);
 852     s390_set_qemu_cpu_model(0x2827, 12, 2, qemu_cpu_feat);
 853 }
 854
 855 static void ccw_machine_4_0_class_options(MachineClass *mc)
 856 {
 857     ccw_machine_4_1_class_options(mc);
 858     compat_props_add(mc->compat_props, hw_compat_4_0, hw_compat_4_0_len);
 859 }
 860 DEFINE_CCW_MACHINE(4_0, "4.0", false);
 861
 862 static void ccw_machine_3_1_instance_options(MachineState *machine)
 863 {
 864     static const S390FeatInit qemu_cpu_feat = { S390_FEAT_LIST_QEMU_V3_1 };
 865     ccw_machine_4_0_instance_options(machine);
 866     s390_cpudef_featoff_greater(14, 1, S390_FEAT_MULTIPLE_EPOCH);
 867     s390_cpudef_group_featoff_greater(14, 1, S390_FEAT_GROUP_MULTIPLE_EPOCH_PTFF);
 868     s390_set_qemu_cpu_model(0x2827, 12, 2, qemu_cpu_feat);
 869 }
 870
 871 static void ccw_machine_3_1_class_options(MachineClass *mc)
 872 {
 873     ccw_machine_4_0_class_options(mc);
 874     compat_props_add(mc->compat_props, hw_compat_3_1, hw_compat_3_1_len);
 875 }
 876 DEFINE_CCW_MACHINE(3_1, "3.1", false);
 877
 878 static void ccw_machine_3_0_instance_options(MachineState *machine)
 879 {
 880     ccw_machine_3_1_instance_options(machine);
 881 }
 882
 883 static void ccw_machine_3_0_class_options(MachineClass *mc)
 884 {
 885     S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc);
 886
 887     s390mc->hpage_1m_allowed = false;
 888     ccw_machine_3_1_class_options(mc);
 889     compat_props_add(mc->compat_props, hw_compat_3_0, hw_compat_3_0_len);
 890 }
 891 DEFINE_CCW_MACHINE(3_0, "3.0", false);
 892
 893 static void ccw_machine_2_12_instance_options(MachineState *machine)
 894 {
 895     ccw_machine_3_0_instance_options(machine);
 896     s390_cpudef_featoff_greater(11, 1, S390_FEAT_PPA15);
 897     s390_cpudef_featoff_greater(11, 1, S390_FEAT_BPB);
 898 }
 899
 900 static void ccw_machine_2_12_class_options(MachineClass *mc)
 901 {
 902     ccw_machine_3_0_class_options(mc);
 903     compat_props_add(mc->compat_props, hw_compat_2_12, hw_compat_2_12_len);
 904 }
 905 DEFINE_CCW_MACHINE(2_12, "2.12", false);
 906
 907 static void ccw_machine_2_11_instance_options(MachineState *machine)
 908 {
 909     static const S390FeatInit qemu_cpu_feat = { S390_FEAT_LIST_QEMU_V2_11 };
 910     ccw_machine_2_12_instance_options(machine);
 911
 912     /* before 2.12 we emulated the very first z900 */
 913     s390_set_qemu_cpu_model(0x2064, 7, 1, qemu_cpu_feat);
 914 }
 915
 916 static void ccw_machine_2_11_class_options(MachineClass *mc)
 917 {
 918     static GlobalProperty compat[] = {
 919         { TYPE_SCLP_EVENT_FACILITY, "allow_all_mask_sizes", "off", },
 920     };
 921
 922     ccw_machine_2_12_class_options(mc);
 923     compat_props_add(mc->compat_props, hw_compat_2_11, hw_compat_2_11_len);
 924     compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat));
 925 }
 926 DEFINE_CCW_MACHINE(2_11, "2.11", false);
 927
 928 static void ccw_machine_2_10_instance_options(MachineState *machine)
 929 {
 930     ccw_machine_2_11_instance_options(machine);
 931 }
 932
 933 static void ccw_machine_2_10_class_options(MachineClass *mc)
 934 {
 935     ccw_machine_2_11_class_options(mc);
 936     compat_props_add(mc->compat_props, hw_compat_2_10, hw_compat_2_10_len);
 937 }
 938 DEFINE_CCW_MACHINE(2_10, "2.10", false);
 939
 940 static void ccw_machine_2_9_instance_options(MachineState *machine)
 941 {
 942     ccw_machine_2_10_instance_options(machine);
 943     s390_cpudef_featoff_greater(12, 1, S390_FEAT_ESOP);
 944     s390_cpudef_featoff_greater(12, 1, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2);
 945     s390_cpudef_featoff_greater(12, 1, S390_FEAT_ZPCI);
 946     s390_cpudef_featoff_greater(12, 1, S390_FEAT_ADAPTER_INT_SUPPRESSION);
 947     s390_cpudef_featoff_greater(12, 1, S390_FEAT_ADAPTER_EVENT_NOTIFICATION);
 948 }
 949
 950 static void ccw_machine_2_9_class_options(MachineClass *mc)
 951 {
 952     S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc);
 953     static GlobalProperty compat[] = {
 954         { TYPE_S390_STATTRIB, "migration-enabled", "off", },
 955     };
 956
 957     ccw_machine_2_10_class_options(mc);
 958     compat_props_add(mc->compat_props, hw_compat_2_9, hw_compat_2_9_len);
 959     compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat));
 960     s390mc->css_migration_enabled = false;
 961 }
 962 DEFINE_CCW_MACHINE(2_9, "2.9", false);
 963
 964 static void ccw_machine_2_8_instance_options(MachineState *machine)
 965 {
 966     ccw_machine_2_9_instance_options(machine);
 967 }
 968
 969 static void ccw_machine_2_8_class_options(MachineClass *mc)
 970 {
 971     static GlobalProperty compat[] = {
 972         { TYPE_S390_FLIC_COMMON, "adapter_routes_max_batch", "64", },
 973     };
 974
 975     ccw_machine_2_9_class_options(mc);
 976     compat_props_add(mc->compat_props, hw_compat_2_8, hw_compat_2_8_len);
 977     compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat));
 978 }
 979 DEFINE_CCW_MACHINE(2_8, "2.8", false);
 980
 981 static void ccw_machine_2_7_instance_options(MachineState *machine)
 982 {
 983     ccw_machine_2_8_instance_options(machine);
 984 }
 985
 986 static void ccw_machine_2_7_class_options(MachineClass *mc)
 987 {
 988     S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc);
 989
 990     s390mc->cpu_model_allowed = false;
 991     ccw_machine_2_8_class_options(mc);
 992     compat_props_add(mc->compat_props, hw_compat_2_7, hw_compat_2_7_len);
 993 }
 994 DEFINE_CCW_MACHINE(2_7, "2.7", false);
 995
 996 static void ccw_machine_2_6_instance_options(MachineState *machine)
 997 {
 998     ccw_machine_2_7_instance_options(machine);
 999 }
1000
1001 static void ccw_machine_2_6_class_options(MachineClass *mc)
1002 {
1003     S390CcwMachineClass *s390mc = S390_CCW_MACHINE_CLASS(mc);
1004     static GlobalProperty compat[] = {
1005         { TYPE_S390_IPL, "iplbext_migration", "off", },
1006          { TYPE_VIRTUAL_CSS_BRIDGE, "css_dev_path", "off", },
1007     };
1008
1009     s390mc->ri_allowed = false;
1010     ccw_machine_2_7_class_options(mc);
1011     compat_props_add(mc->compat_props, hw_compat_2_6, hw_compat_2_6_len);
1012     compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat));
1013 }
1014 DEFINE_CCW_MACHINE(2_6, "2.6", false);
1015
1016 static void ccw_machine_2_5_instance_options(MachineState *machine)
1017 {
1018     ccw_machine_2_6_instance_options(machine);
1019 }
1020
1021 static void ccw_machine_2_5_class_options(MachineClass *mc)
1022 {
1023     ccw_machine_2_6_class_options(mc);
1024     compat_props_add(mc->compat_props, hw_compat_2_5, hw_compat_2_5_len);
1025 }
1026 DEFINE_CCW_MACHINE(2_5, "2.5", false);
1027
1028 static void ccw_machine_2_4_instance_options(MachineState *machine)
1029 {
1030     ccw_machine_2_5_instance_options(machine);
1031 }
1032
1033 static void ccw_machine_2_4_class_options(MachineClass *mc)
1034 {
1035     static GlobalProperty compat[] = {
1036         { TYPE_S390_SKEYS, "migration-enabled", "off", },
1037         { "virtio-blk-ccw", "max_revision", "0", },
1038         { "virtio-balloon-ccw", "max_revision", "0", },
1039         { "virtio-serial-ccw", "max_revision", "0", },
1040         { "virtio-9p-ccw", "max_revision", "0", },
1041         { "virtio-rng-ccw", "max_revision", "0", },
1042         { "virtio-net-ccw", "max_revision", "0", },
1043         { "virtio-scsi-ccw", "max_revision", "0", },
1044         { "vhost-scsi-ccw", "max_revision", "0", },
1045     };
1046
1047     ccw_machine_2_5_class_options(mc);
1048     compat_props_add(mc->compat_props, hw_compat_2_4, hw_compat_2_4_len);
1049     compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat));
1050 }
1051 DEFINE_CCW_MACHINE(2_4, "2.4", false);
1052
1053 static void ccw_machine_register_types(void)
1054 {
1055     type_register_static(&ccw_machine_info);
1056 }
1057
1058 type_init(ccw_machine_register_types)