501 lines
15 KiB
C
501 lines
15 KiB
C
/*
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* virtio ccw machine
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*
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* Copyright 2012 IBM Corp.
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* Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or (at
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* your option) any later version. See the COPYING file in the top-level
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* directory.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu-common.h"
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#include "cpu.h"
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#include "hw/boards.h"
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#include "exec/address-spaces.h"
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#include "s390-virtio.h"
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#include "hw/s390x/sclp.h"
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#include "hw/s390x/s390_flic.h"
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#include "hw/s390x/ioinst.h"
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#include "hw/s390x/css.h"
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#include "virtio-ccw.h"
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#include "qemu/config-file.h"
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#include "s390-pci-bus.h"
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#include "hw/s390x/storage-keys.h"
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#include "hw/compat.h"
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#include "ipl.h"
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#include "hw/s390x/s390-virtio-ccw.h"
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#include "hw/s390x/css-bridge.h"
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static const char *const reset_dev_types[] = {
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TYPE_VIRTUAL_CSS_BRIDGE,
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"s390-sclp-event-facility",
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"s390-flic",
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"diag288",
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};
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void subsystem_reset(void)
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{
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DeviceState *dev;
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int i;
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for (i = 0; i < ARRAY_SIZE(reset_dev_types); i++) {
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dev = DEVICE(object_resolve_path_type("", reset_dev_types[i], NULL));
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if (dev) {
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qdev_reset_all(dev);
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}
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}
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}
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static int virtio_ccw_hcall_notify(const uint64_t *args)
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{
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uint64_t subch_id = args[0];
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uint64_t queue = args[1];
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SubchDev *sch;
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int cssid, ssid, schid, m;
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if (ioinst_disassemble_sch_ident(subch_id, &m, &cssid, &ssid, &schid)) {
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return -EINVAL;
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}
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sch = css_find_subch(m, cssid, ssid, schid);
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if (!sch || !css_subch_visible(sch)) {
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return -EINVAL;
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}
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if (queue >= VIRTIO_QUEUE_MAX) {
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return -EINVAL;
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}
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virtio_queue_notify(virtio_ccw_get_vdev(sch), queue);
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return 0;
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}
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static int virtio_ccw_hcall_early_printk(const uint64_t *args)
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{
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uint64_t mem = args[0];
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if (mem < ram_size) {
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/* Early printk */
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return 0;
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}
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return -EINVAL;
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}
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static void virtio_ccw_register_hcalls(void)
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{
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s390_register_virtio_hypercall(KVM_S390_VIRTIO_CCW_NOTIFY,
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virtio_ccw_hcall_notify);
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/* Tolerate early printk. */
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s390_register_virtio_hypercall(KVM_S390_VIRTIO_NOTIFY,
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virtio_ccw_hcall_early_printk);
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}
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void s390_memory_init(ram_addr_t mem_size)
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{
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MemoryRegion *sysmem = get_system_memory();
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MemoryRegion *ram = g_new(MemoryRegion, 1);
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/* allocate RAM for core */
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memory_region_allocate_system_memory(ram, NULL, "s390.ram", mem_size);
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memory_region_add_subregion(sysmem, 0, ram);
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/* Initialize storage key device */
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s390_skeys_init();
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}
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static void ccw_init(MachineState *machine)
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{
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int ret;
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VirtualCssBus *css_bus;
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DeviceState *dev;
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s390_sclp_init();
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s390_memory_init(machine->ram_size);
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/* get a BUS */
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css_bus = virtual_css_bus_init();
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s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
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machine->initrd_filename, "s390-ccw.img",
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"s390-netboot.img", true);
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s390_flic_init();
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dev = qdev_create(NULL, TYPE_S390_PCI_HOST_BRIDGE);
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object_property_add_child(qdev_get_machine(), TYPE_S390_PCI_HOST_BRIDGE,
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OBJECT(dev), NULL);
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qdev_init_nofail(dev);
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/* register hypercalls */
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virtio_ccw_register_hcalls();
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/* init CPUs */
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s390_init_cpus(machine);
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if (kvm_enabled()) {
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kvm_s390_enable_css_support(s390_cpu_addr2state(0));
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}
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/*
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* Create virtual css and set it as default so that non mcss-e
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* enabled guests only see virtio devices.
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*/
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ret = css_create_css_image(VIRTUAL_CSSID, true);
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assert(ret == 0);
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/* Create VirtIO network adapters */
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s390_create_virtio_net(BUS(css_bus), "virtio-net-ccw");
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/* Register savevm handler for guest TOD clock */
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register_savevm(NULL, "todclock", 0, 1,
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gtod_save, gtod_load, kvm_state);
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}
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static void s390_cpu_plug(HotplugHandler *hotplug_dev,
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DeviceState *dev, Error **errp)
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{
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gchar *name;
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S390CPU *cpu = S390_CPU(dev);
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CPUState *cs = CPU(dev);
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name = g_strdup_printf("cpu[%i]", cpu->env.cpu_num);
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object_property_set_link(OBJECT(hotplug_dev), OBJECT(cs), name,
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errp);
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g_free(name);
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}
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static void s390_machine_device_plug(HotplugHandler *hotplug_dev,
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DeviceState *dev, Error **errp)
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{
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if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
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s390_cpu_plug(hotplug_dev, dev, errp);
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}
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}
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static HotplugHandler *s390_get_hotplug_handler(MachineState *machine,
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DeviceState *dev)
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{
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if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
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return HOTPLUG_HANDLER(machine);
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}
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return NULL;
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}
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static void s390_hot_add_cpu(const int64_t id, Error **errp)
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{
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MachineState *machine = MACHINE(qdev_get_machine());
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s390x_new_cpu(machine->cpu_model, id, errp);
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}
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static void ccw_machine_class_init(ObjectClass *oc, void *data)
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{
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MachineClass *mc = MACHINE_CLASS(oc);
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NMIClass *nc = NMI_CLASS(oc);
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HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
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S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
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s390mc->ri_allowed = true;
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s390mc->cpu_model_allowed = true;
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mc->init = ccw_init;
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mc->reset = s390_machine_reset;
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mc->hot_add_cpu = s390_hot_add_cpu;
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mc->block_default_type = IF_VIRTIO;
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mc->no_cdrom = 1;
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mc->no_floppy = 1;
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mc->no_serial = 1;
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mc->no_parallel = 1;
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mc->no_sdcard = 1;
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mc->use_sclp = 1;
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mc->max_cpus = 248;
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mc->get_hotplug_handler = s390_get_hotplug_handler;
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hc->plug = s390_machine_device_plug;
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nc->nmi_monitor_handler = s390_nmi;
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}
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static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
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{
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S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
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return ms->aes_key_wrap;
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}
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static inline void machine_set_aes_key_wrap(Object *obj, bool value,
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Error **errp)
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{
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S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
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ms->aes_key_wrap = value;
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}
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static inline bool machine_get_dea_key_wrap(Object *obj, Error **errp)
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{
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S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
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return ms->dea_key_wrap;
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}
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static inline void machine_set_dea_key_wrap(Object *obj, bool value,
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Error **errp)
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{
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S390CcwMachineState *ms = S390_CCW_MACHINE(obj);
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ms->dea_key_wrap = value;
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}
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bool ri_allowed(void)
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{
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if (kvm_enabled()) {
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MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
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if (object_class_dynamic_cast(OBJECT_CLASS(mc),
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TYPE_S390_CCW_MACHINE)) {
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S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
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return s390mc->ri_allowed;
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}
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/*
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* Make sure the "none" machine can have ri, otherwise it won't * be
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* unlocked in KVM and therefore the host CPU model might be wrong.
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*/
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return true;
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}
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return 0;
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}
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bool cpu_model_allowed(void)
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{
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MachineClass *mc = MACHINE_GET_CLASS(qdev_get_machine());
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if (object_class_dynamic_cast(OBJECT_CLASS(mc),
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TYPE_S390_CCW_MACHINE)) {
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S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
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return s390mc->cpu_model_allowed;
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}
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/* allow CPU model qmp queries with the "none" machine */
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return true;
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}
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static inline void s390_machine_initfn(Object *obj)
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{
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object_property_add_bool(obj, "aes-key-wrap",
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machine_get_aes_key_wrap,
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machine_set_aes_key_wrap, NULL);
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object_property_set_description(obj, "aes-key-wrap",
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"enable/disable AES key wrapping using the CPACF wrapping key",
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NULL);
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object_property_set_bool(obj, true, "aes-key-wrap", NULL);
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object_property_add_bool(obj, "dea-key-wrap",
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machine_get_dea_key_wrap,
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machine_set_dea_key_wrap, NULL);
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object_property_set_description(obj, "dea-key-wrap",
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"enable/disable DEA key wrapping using the CPACF wrapping key",
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NULL);
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object_property_set_bool(obj, true, "dea-key-wrap", NULL);
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}
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static const TypeInfo ccw_machine_info = {
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.name = TYPE_S390_CCW_MACHINE,
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.parent = TYPE_MACHINE,
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.abstract = true,
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.instance_size = sizeof(S390CcwMachineState),
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.instance_init = s390_machine_initfn,
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.class_size = sizeof(S390CcwMachineClass),
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.class_init = ccw_machine_class_init,
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.interfaces = (InterfaceInfo[]) {
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{ TYPE_NMI },
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{ TYPE_HOTPLUG_HANDLER},
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{ }
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},
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};
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#define DEFINE_CCW_MACHINE(suffix, verstr, latest) \
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static void ccw_machine_##suffix##_class_init(ObjectClass *oc, \
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void *data) \
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{ \
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MachineClass *mc = MACHINE_CLASS(oc); \
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ccw_machine_##suffix##_class_options(mc); \
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mc->desc = "VirtIO-ccw based S390 machine v" verstr; \
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if (latest) { \
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mc->alias = "s390-ccw-virtio"; \
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mc->is_default = 1; \
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} \
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} \
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static void ccw_machine_##suffix##_instance_init(Object *obj) \
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{ \
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MachineState *machine = MACHINE(obj); \
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ccw_machine_##suffix##_instance_options(machine); \
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} \
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static const TypeInfo ccw_machine_##suffix##_info = { \
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.name = MACHINE_TYPE_NAME("s390-ccw-virtio-" verstr), \
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.parent = TYPE_S390_CCW_MACHINE, \
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.class_init = ccw_machine_##suffix##_class_init, \
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.instance_init = ccw_machine_##suffix##_instance_init, \
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}; \
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static void ccw_machine_register_##suffix(void) \
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{ \
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type_register_static(&ccw_machine_##suffix##_info); \
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} \
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type_init(ccw_machine_register_##suffix)
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#define CCW_COMPAT_2_9 \
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HW_COMPAT_2_9
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#define CCW_COMPAT_2_8 \
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HW_COMPAT_2_8 \
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{\
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.driver = TYPE_S390_FLIC_COMMON,\
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.property = "adapter_routes_max_batch",\
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.value = "64",\
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},
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#define CCW_COMPAT_2_7 \
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HW_COMPAT_2_7
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#define CCW_COMPAT_2_6 \
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HW_COMPAT_2_6 \
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{\
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.driver = TYPE_S390_IPL,\
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.property = "iplbext_migration",\
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.value = "off",\
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}, {\
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.driver = TYPE_VIRTUAL_CSS_BRIDGE,\
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.property = "css_dev_path",\
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.value = "off",\
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},
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#define CCW_COMPAT_2_5 \
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HW_COMPAT_2_5
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#define CCW_COMPAT_2_4 \
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HW_COMPAT_2_4 \
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{\
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.driver = TYPE_S390_SKEYS,\
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.property = "migration-enabled",\
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.value = "off",\
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},{\
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.driver = "virtio-blk-ccw",\
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.property = "max_revision",\
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.value = "0",\
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},{\
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.driver = "virtio-balloon-ccw",\
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.property = "max_revision",\
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.value = "0",\
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},{\
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.driver = "virtio-serial-ccw",\
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.property = "max_revision",\
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.value = "0",\
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},{\
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.driver = "virtio-9p-ccw",\
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.property = "max_revision",\
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.value = "0",\
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},{\
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.driver = "virtio-rng-ccw",\
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.property = "max_revision",\
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.value = "0",\
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},{\
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.driver = "virtio-net-ccw",\
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.property = "max_revision",\
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.value = "0",\
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},{\
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.driver = "virtio-scsi-ccw",\
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.property = "max_revision",\
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.value = "0",\
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},{\
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.driver = "vhost-scsi-ccw",\
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.property = "max_revision",\
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.value = "0",\
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},
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static void ccw_machine_2_10_instance_options(MachineState *machine)
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{
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}
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static void ccw_machine_2_10_class_options(MachineClass *mc)
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{
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}
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DEFINE_CCW_MACHINE(2_10, "2.10", true);
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static void ccw_machine_2_9_instance_options(MachineState *machine)
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{
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ccw_machine_2_10_instance_options(machine);
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}
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static void ccw_machine_2_9_class_options(MachineClass *mc)
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{
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ccw_machine_2_10_class_options(mc);
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SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_9);
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}
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DEFINE_CCW_MACHINE(2_9, "2.9", false);
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static void ccw_machine_2_8_instance_options(MachineState *machine)
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{
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ccw_machine_2_9_instance_options(machine);
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}
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static void ccw_machine_2_8_class_options(MachineClass *mc)
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{
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ccw_machine_2_9_class_options(mc);
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SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_8);
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}
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DEFINE_CCW_MACHINE(2_8, "2.8", false);
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static void ccw_machine_2_7_instance_options(MachineState *machine)
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{
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ccw_machine_2_8_instance_options(machine);
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}
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static void ccw_machine_2_7_class_options(MachineClass *mc)
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{
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S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
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s390mc->cpu_model_allowed = false;
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ccw_machine_2_8_class_options(mc);
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SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_7);
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}
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DEFINE_CCW_MACHINE(2_7, "2.7", false);
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static void ccw_machine_2_6_instance_options(MachineState *machine)
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{
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ccw_machine_2_7_instance_options(machine);
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}
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static void ccw_machine_2_6_class_options(MachineClass *mc)
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{
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S390CcwMachineClass *s390mc = S390_MACHINE_CLASS(mc);
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s390mc->ri_allowed = false;
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ccw_machine_2_7_class_options(mc);
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SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_6);
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}
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DEFINE_CCW_MACHINE(2_6, "2.6", false);
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static void ccw_machine_2_5_instance_options(MachineState *machine)
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{
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ccw_machine_2_6_instance_options(machine);
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}
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static void ccw_machine_2_5_class_options(MachineClass *mc)
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{
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ccw_machine_2_6_class_options(mc);
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SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_5);
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}
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DEFINE_CCW_MACHINE(2_5, "2.5", false);
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static void ccw_machine_2_4_instance_options(MachineState *machine)
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{
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ccw_machine_2_5_instance_options(machine);
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}
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static void ccw_machine_2_4_class_options(MachineClass *mc)
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{
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ccw_machine_2_5_class_options(mc);
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SET_MACHINE_COMPAT(mc, CCW_COMPAT_2_4);
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}
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DEFINE_CCW_MACHINE(2_4, "2.4", false);
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static void ccw_machine_register_types(void)
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{
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type_register_static(&ccw_machine_info);
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}
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type_init(ccw_machine_register_types)
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