| /* |
| * virtio ccw machine |
| * |
| * Copyright 2012 IBM Corp. |
| * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> |
| * |
| * This work is licensed under the terms of the GNU GPL, version 2 or (at |
| * your option) any later version. See the COPYING file in the top-level |
| * directory. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "qemu-common.h" |
| #include "cpu.h" |
| #include "hw/boards.h" |
| #include "exec/address-spaces.h" |
| #include "s390-virtio.h" |
| #include "hw/s390x/sclp.h" |
| #include "hw/s390x/s390_flic.h" |
| #include "hw/s390x/ioinst.h" |
| #include "hw/s390x/css.h" |
| #include "virtio-ccw.h" |
| #include "qemu/config-file.h" |
| #include "s390-pci-bus.h" |
| #include "hw/s390x/storage-keys.h" |
| #include "hw/s390x/storage-attributes.h" |
| #include "hw/compat.h" |
| #include "ipl.h" |
| #include "hw/s390x/s390-virtio-ccw.h" |
| #include "hw/s390x/css-bridge.h" |
| #include "migration/register.h" |
| #include "cpu_models.h" |
| |
| static const char *const reset_dev_types[] = { |
| TYPE_VIRTUAL_CSS_BRIDGE, |
| "s390-sclp-event-facility", |
| "s390-flic", |
| "diag288", |
| }; |
| |
| void subsystem_reset(void) |
| { |
| DeviceState *dev; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(reset_dev_types); i++) { |
| dev = DEVICE(object_resolve_path_type("", reset_dev_types[i], NULL)); |
| if (dev) { |
| qdev_reset_all(dev); |
| } |
| } |
| } |
| |
| static int virtio_ccw_hcall_notify(const uint64_t *args) |
| { |
| uint64_t subch_id = args[0]; |
| uint64_t queue = args[1]; |
| SubchDev *sch; |
| int cssid, ssid, schid, m; |
| |
| if (ioinst_disassemble_sch_ident(subch_id, &m, &cssid, &ssid, &schid)) { |
| return -EINVAL; |
| } |
| sch = css_find_subch(m, cssid, ssid, schid); |
| if (!sch || !css_subch_visible(sch)) { |
| return -EINVAL; |
| } |
| if (queue >= VIRTIO_QUEUE_MAX) { |
| return -EINVAL; |
| } |
| virtio_queue_notify(virtio_ccw_get_vdev(sch), queue); |
| return 0; |
| |
| } |
| |
| static int virtio_ccw_hcall_early_printk(const uint64_t *args) |
| { |
| uint64_t mem = args[0]; |
| |
| if (mem < ram_size) { |
| /* Early printk */ |
| return 0; |
| } |
| return -EINVAL; |
| } |
| |
| static void virtio_ccw_register_hcalls(void) |
| { |
| s390_register_virtio_hypercall(KVM_S390_VIRTIO_CCW_NOTIFY, |
| virtio_ccw_hcall_notify); |
| /* Tolerate early printk. */ |
| s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY, |
| virtio_ccw_hcall_early_printk); |
| } |
| |
| void s390_memory_init(ram_addr_t mem_size) |
| { |
| MemoryRegion *sysmem = get_system_memory(); |
| MemoryRegion *ram = g_new(MemoryRegion, 1); |
| |
| /* allocate RAM for core */ |
| memory_region_allocate_system_memory(ram, NULL, "s390.ram", mem_size); |
| memory_region_add_subregion(sysmem, 0, ram); |
| |
| /* Initialize storage key device */ |
| s390_skeys_init(); |
| /* Initialize storage attributes device */ |
| s390_stattrib_init(); |
| } |
| |
| static SaveVMHandlers savevm_gtod = { |
| .save_state = gtod_save, |
| .load_state = gtod_load, |
| }; |
| |
| static void ccw_init(MachineState *machine) |
| { |
| int ret; |
| VirtualCssBus *css_bus; |
| DeviceState *dev; |
| |
| s390_sclp_init(); |
| s390_memory_init(machine->ram_size); |
| |
| /* init CPUs */ |
| s390_init_cpus(machine); |
| |
| s390_flic_init(); |
| |
| /* get a BUS */ |
| css_bus = virtual_css_bus_init(); |
| s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline, |
| machine->initrd_filename, "s390-ccw.img", |
| "s390-netboot.img", true); |
| |
| dev = qdev_create(NULL, TYPE_S390_PCI_HOST_BRIDGE); |
| object_property_add_child(qdev_get_machine(), TYPE_S390_PCI_HOST_BRIDGE, |
| OBJECT(dev), NULL); |
| qdev_init_nofail(dev); |
| |
| /* register hypercalls */ |
| virtio_ccw_register_hcalls(); |
| |
| if (kvm_enabled()) { |
| kvm_s390_enable_css_support(s390_cpu_addr2state(0)); |
| } |
| /* |
| * Non mcss-e enabled guests only see the devices from the default |
| * css, which is determined by the value of the squash_mcss property. |
| * Note: we must not squash non virtual devices to css 0xFE. |
| */ |
| if (css_bus->squash_mcss) { |
| ret = css_create_css_image(0, true); |
| } else { |
| ret = css_create_css_image(VIRTUAL_CSSID, true); |
| } |
| assert(ret == 0); |
| |
| /* Create VirtIO network adapters */ |
| s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw"); |
| |
| /* Register savevm handler for guest TOD clock */ |
| register_savevm_live(NULL, "todclock", 0, 1, &savevm_gtod, kvm_state); |
| } |
| |
| static void s390_cpu_plug(HotplugHandler *hotplug_dev, |
| DeviceState *dev, Error **errp) |
| { |
| gchar *name; |
| S390CPU *cpu = S390_CPU(dev); |
| CPUState *cs = CPU(dev); |
| |
| name = g_strdup_printf("cpu[%i]", cpu->env.cpu_num); |
| object_property_set_link(OBJECT(hotplug_dev), OBJECT(cs), name, |
| errp); |
| g_free(name); |
| } |
| |
| static void s390_machine_device_plug(HotplugHandler *hotplug_dev, |
| DeviceState *dev, Error **errp) |
| { |
| if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { |
| s390_cpu_plug(hotplug_dev, dev, errp); |
| } |
| } |
| |
| static HotplugHandler *s390_get_hotplug_handler(MachineState *machine, |
| DeviceState *dev) |
| { |
| if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { |
| return HOTPLUG_HANDLER(machine); |
| } |
| return NULL; |
| } |
| |
| static void s390_hot_add_cpu(const int64_t id, Error **errp) |
| { |
| MachineState *machine = MACHINE(qdev_get_machine()); |
| |
| s390x_new_cpu(machine->cpu_model, id, errp); |
| } |
| |
| static void ccw_machine_class_init(ObjectClass *oc, void *data) |
| { |
| MachineClass *mc = MACHINE_CLASS(oc); |
| NMIClass *nc = NMI_CLASS(oc); |
| HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc); |
| S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); |
| |
| s390mc->ri_allowed = true; |
| s390mc->cpu_model_allowed = true; |
| s390mc->css_migration_enabled = true; |
| s390mc->gs_allowed = true; |
| mc->init = ccw_init; |
| mc->reset = s390_machine_reset; |
| mc->hot_add_cpu = s390_hot_add_cpu; |
| mc->block_default_type = IF_VIRTIO; |
| mc->no_cdrom = 1; |
| mc->no_floppy = 1; |
| mc->no_serial = 1; |
| mc->no_parallel = 1; |
| mc->no_sdcard = 1; |
| mc->use_sclp = 1; |
| mc->max_cpus = 248; |
| mc->get_hotplug_handler = s390_get_hotplug_handler; |
| hc->plug = s390_machine_device_plug; |
| nc->nmi_monitor_handler = s390_nmi; |
| } |
| |
| static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp) |
| { |
| S390CcwMachineState *ms = S390_CCW_MACHINE(obj); |
| |
| return ms->aes_key_wrap; |
| } |
| |
| static inline void machine_set_aes_key_wrap(Object *obj, bool value, |
| Error **errp) |
| { |
| S390CcwMachineState *ms = S390_CCW_MACHINE(obj); |
| |
| ms->aes_key_wrap = value; |
| } |
| |
| static inline bool machine_get_dea_key_wrap(Object *obj, Error **errp) |
| { |
| S390CcwMachineState *ms = S390_CCW_MACHINE(obj); |
| |
| return ms->dea_key_wrap; |
| } |
| |
| static inline void machine_set_dea_key_wrap(Object *obj, bool value, |
| Error **errp) |
| { |
| S390CcwMachineState *ms = S390_CCW_MACHINE(obj); |
| |
| ms->dea_key_wrap = value; |
| } |
| |
| static S390CcwMachineClass *current_mc; |
| |
| static S390CcwMachineClass *get_machine_class(void) |
| { |
| if (unlikely(!current_mc)) { |
| /* |
| * No s390 ccw machine was instantiated, we are likely to |
| * be called for the 'none' machine. The properties will |
| * have their after-initialization values. |
| */ |
| current_mc = S390_MACHINE_CLASS( |
| object_class_by_name(TYPE_S390_CCW_MACHINE)); |
| } |
| return current_mc; |
| } |
| |
| bool ri_allowed(void) |
| { |
| if (!kvm_enabled()) { |
| return false; |
| } |
| /* for "none" machine this results in true */ |
| return get_machine_class()->ri_allowed; |
| } |
| |
| bool cpu_model_allowed(void) |
| { |
| /* for "none" machine this results in true */ |
| return get_machine_class()->cpu_model_allowed; |
| } |
| |
| bool gs_allowed(void) |
| { |
| if (kvm_enabled()) { |
| MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine()); |
| if (object_class_dynamic_cast(OBJECT_CLASS(mc), |
| TYPE_S390_CCW_MACHINE)) { |
| S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); |
| |
| return s390mc->gs_allowed; |
| } |
| /* Make sure the "none" machine can have gs */ |
| return true; |
| } |
| return false; |
| } |
| |
| static char *machine_get_loadparm(Object *obj, Error **errp) |
| { |
| S390CcwMachineState *ms = S390_CCW_MACHINE(obj); |
| |
| return g_memdup(ms->loadparm, sizeof(ms->loadparm)); |
| } |
| |
| static void machine_set_loadparm(Object *obj, const char *val, Error **errp) |
| { |
| S390CcwMachineState *ms = S390_CCW_MACHINE(obj); |
| int i; |
| |
| for (i = 0; i < sizeof(ms->loadparm) && val[i]; i++) { |
| uint8_t c = qemu_toupper(val[i]); /* mimic HMC */ |
| |
| if (('A' <= c && c <= 'Z') || ('0' <= c && c <= '9') || (c == '.') || |
| (c == ' ')) { |
| ms->loadparm[i] = c; |
| } else { |
| error_setg(errp, "LOADPARM: invalid character '%c' (ASCII 0x%02x)", |
| c, c); |
| return; |
| } |
| } |
| |
| for (; i < sizeof(ms->loadparm); i++) { |
| ms->loadparm[i] = ' '; /* pad right with spaces */ |
| } |
| } |
| static inline bool machine_get_squash_mcss(Object *obj, Error **errp) |
| { |
| S390CcwMachineState *ms = S390_CCW_MACHINE(obj); |
| |
| return ms->s390_squash_mcss; |
| } |
| |
| static inline void machine_set_squash_mcss(Object *obj, bool value, |
| Error **errp) |
| { |
| S390CcwMachineState *ms = S390_CCW_MACHINE(obj); |
| |
| ms->s390_squash_mcss = value; |
| } |
| |
| static inline void s390_machine_initfn(Object *obj) |
| { |
| object_property_add_bool(obj, "aes-key-wrap", |
| machine_get_aes_key_wrap, |
| machine_set_aes_key_wrap, NULL); |
| object_property_set_description(obj, "aes-key-wrap", |
| "enable/disable AES key wrapping using the CPACF wrapping key", |
| NULL); |
| object_property_set_bool(obj, true, "aes-key-wrap", NULL); |
| |
| object_property_add_bool(obj, "dea-key-wrap", |
| machine_get_dea_key_wrap, |
| machine_set_dea_key_wrap, NULL); |
| object_property_set_description(obj, "dea-key-wrap", |
| "enable/disable DEA key wrapping using the CPACF wrapping key", |
| NULL); |
| object_property_set_bool(obj, true, "dea-key-wrap", NULL); |
| object_property_add_str(obj, "loadparm", |
| machine_get_loadparm, machine_set_loadparm, NULL); |
| object_property_set_description(obj, "loadparm", |
| "Up to 8 chars in set of [A-Za-z0-9. ] (lower case chars converted" |
| " to upper case) to pass to machine loader, boot manager," |
| " and guest kernel", |
| NULL); |
| object_property_add_bool(obj, "s390-squash-mcss", |
| machine_get_squash_mcss, |
| machine_set_squash_mcss, NULL); |
| object_property_set_description(obj, "s390-squash-mcss", |
| "enable/disable squashing subchannels into the default css", |
| NULL); |
| object_property_set_bool(obj, false, "s390-squash-mcss", NULL); |
| } |
| |
| static const TypeInfo ccw_machine_info = { |
| .name = TYPE_S390_CCW_MACHINE, |
| .parent = TYPE_MACHINE, |
| .abstract = true, |
| .instance_size = sizeof(S390CcwMachineState), |
| .instance_init = s390_machine_initfn, |
| .class_size = sizeof(S390CcwMachineClass), |
| .class_init = ccw_machine_class_init, |
| .interfaces = (InterfaceInfo[]) { |
| { TYPE_NMI }, |
| { TYPE_HOTPLUG_HANDLER}, |
| { } |
| }, |
| }; |
| |
| bool css_migration_enabled(void) |
| { |
| return get_machine_class()->css_migration_enabled; |
| } |
| |
| #define DEFINE_CCW_MACHINE(suffix, verstr, latest) \ |
| static void ccw_machine_##suffix##_class_init(ObjectClass *oc, \ |
| void *data) \ |
| { \ |
| MachineClass *mc = MACHINE_CLASS(oc); \ |
| ccw_machine_##suffix##_class_options(mc); \ |
| mc->desc = "VirtIO-ccw based S390 machine v" verstr; \ |
| if (latest) { \ |
| mc->alias = "s390-ccw-virtio"; \ |
| mc->is_default = 1; \ |
| } \ |
| } \ |
| static void ccw_machine_##suffix##_instance_init(Object *obj) \ |
| { \ |
| MachineState *machine = MACHINE(obj); \ |
| current_mc = S390_MACHINE_CLASS(MACHINE_GET_CLASS(machine)); \ |
| ccw_machine_##suffix##_instance_options(machine); \ |
| } \ |
| static const TypeInfo ccw_machine_##suffix##_info = { \ |
| .name = MACHINE_TYPE_NAME("s390-ccw-virtio-" verstr), \ |
| .parent = TYPE_S390_CCW_MACHINE, \ |
| .class_init = ccw_machine_##suffix##_class_init, \ |
| .instance_init = ccw_machine_##suffix##_instance_init, \ |
| }; \ |
| static void ccw_machine_register_##suffix(void) \ |
| { \ |
| type_register_static(&ccw_machine_##suffix##_info); \ |
| } \ |
| type_init(ccw_machine_register_##suffix) |
| |
| #define CCW_COMPAT_2_9 \ |
| HW_COMPAT_2_9 \ |
| {\ |
| .driver = TYPE_S390_STATTRIB,\ |
| .property = "migration-enabled",\ |
| .value = "off",\ |
| }, |
| |
| #define CCW_COMPAT_2_8 \ |
| HW_COMPAT_2_8 \ |
| {\ |
| .driver = TYPE_S390_FLIC_COMMON,\ |
| .property = "adapter_routes_max_batch",\ |
| .value = "64",\ |
| }, |
| |
| #define CCW_COMPAT_2_7 \ |
| HW_COMPAT_2_7 |
| |
| #define CCW_COMPAT_2_6 \ |
| HW_COMPAT_2_6 \ |
| {\ |
| .driver = TYPE_S390_IPL,\ |
| .property = "iplbext_migration",\ |
| .value = "off",\ |
| }, {\ |
| .driver = TYPE_VIRTUAL_CSS_BRIDGE,\ |
| .property = "css_dev_path",\ |
| .value = "off",\ |
| }, |
| |
| #define CCW_COMPAT_2_5 \ |
| HW_COMPAT_2_5 |
| |
| #define CCW_COMPAT_2_4 \ |
| HW_COMPAT_2_4 \ |
| {\ |
| .driver = TYPE_S390_SKEYS,\ |
| .property = "migration-enabled",\ |
| .value = "off",\ |
| },{\ |
| .driver = "virtio-blk-ccw",\ |
| .property = "max_revision",\ |
| .value = "0",\ |
| },{\ |
| .driver = "virtio-balloon-ccw",\ |
| .property = "max_revision",\ |
| .value = "0",\ |
| },{\ |
| .driver = "virtio-serial-ccw",\ |
| .property = "max_revision",\ |
| .value = "0",\ |
| },{\ |
| .driver = "virtio-9p-ccw",\ |
| .property = "max_revision",\ |
| .value = "0",\ |
| },{\ |
| .driver = "virtio-rng-ccw",\ |
| .property = "max_revision",\ |
| .value = "0",\ |
| },{\ |
| .driver = "virtio-net-ccw",\ |
| .property = "max_revision",\ |
| .value = "0",\ |
| },{\ |
| .driver = "virtio-scsi-ccw",\ |
| .property = "max_revision",\ |
| .value = "0",\ |
| },{\ |
| .driver = "vhost-scsi-ccw",\ |
| .property = "max_revision",\ |
| .value = "0",\ |
| }, |
| |
| static void ccw_machine_2_10_instance_options(MachineState *machine) |
| { |
| if (css_migration_enabled()) { |
| css_register_vmstate(); |
| } |
| } |
| |
| static void ccw_machine_2_10_class_options(MachineClass *mc) |
| { |
| } |
| DEFINE_CCW_MACHINE(2_10, "2.10", true); |
| |
| static void ccw_machine_2_9_instance_options(MachineState *machine) |
| { |
| ccw_machine_2_10_instance_options(machine); |
| s390_cpudef_featoff_greater(12, 1, S390_FEAT_ESOP); |
| s390_cpudef_featoff_greater(12, 1, S390_FEAT_SIDE_EFFECT_ACCESS_ESOP2); |
| s390_cpudef_featoff_greater(12, 1, S390_FEAT_ZPCI); |
| s390_cpudef_featoff_greater(12, 1, S390_FEAT_ADAPTER_INT_SUPPRESSION); |
| s390_cpudef_featoff_greater(12, 1, S390_FEAT_ADAPTER_EVENT_NOTIFICATION); |
| } |
| |
| static void ccw_machine_2_9_class_options(MachineClass *mc) |
| { |
| S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); |
| |
| s390mc->gs_allowed = false; |
| ccw_machine_2_10_class_options(mc); |
| SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_9); |
| s390mc->css_migration_enabled = false; |
| } |
| DEFINE_CCW_MACHINE(2_9, "2.9", false); |
| |
| static void ccw_machine_2_8_instance_options(MachineState *machine) |
| { |
| ccw_machine_2_9_instance_options(machine); |
| } |
| |
| static void ccw_machine_2_8_class_options(MachineClass *mc) |
| { |
| ccw_machine_2_9_class_options(mc); |
| SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_8); |
| } |
| DEFINE_CCW_MACHINE(2_8, "2.8", false); |
| |
| static void ccw_machine_2_7_instance_options(MachineState *machine) |
| { |
| ccw_machine_2_8_instance_options(machine); |
| } |
| |
| static void ccw_machine_2_7_class_options(MachineClass *mc) |
| { |
| S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); |
| |
| s390mc->cpu_model_allowed = false; |
| ccw_machine_2_8_class_options(mc); |
| SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_7); |
| } |
| DEFINE_CCW_MACHINE(2_7, "2.7", false); |
| |
| static void ccw_machine_2_6_instance_options(MachineState *machine) |
| { |
| ccw_machine_2_7_instance_options(machine); |
| } |
| |
| static void ccw_machine_2_6_class_options(MachineClass *mc) |
| { |
| S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc); |
| |
| s390mc->ri_allowed = false; |
| ccw_machine_2_7_class_options(mc); |
| SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_6); |
| } |
| DEFINE_CCW_MACHINE(2_6, "2.6", false); |
| |
| static void ccw_machine_2_5_instance_options(MachineState *machine) |
| { |
| ccw_machine_2_6_instance_options(machine); |
| } |
| |
| static void ccw_machine_2_5_class_options(MachineClass *mc) |
| { |
| ccw_machine_2_6_class_options(mc); |
| SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_5); |
| } |
| DEFINE_CCW_MACHINE(2_5, "2.5", false); |
| |
| static void ccw_machine_2_4_instance_options(MachineState *machine) |
| { |
| ccw_machine_2_5_instance_options(machine); |
| } |
| |
| static void ccw_machine_2_4_class_options(MachineClass *mc) |
| { |
| ccw_machine_2_5_class_options(mc); |
| SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_4); |
| } |
| DEFINE_CCW_MACHINE(2_4, "2.4", false); |
| |
| static void ccw_machine_register_types(void) |
| { |
| type_register_static(&ccw_machine_info); |
| } |
| |
| type_init(ccw_machine_register_types) |
