204 lines
5.6 KiB
C
204 lines
5.6 KiB
C
/*
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* QEMU S390 virtio target
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*
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* Copyright (c) 2009 Alexander Graf <agraf@suse.de>
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* Copyright IBM Corp 2012
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* Contributions after 2012-10-29 are licensed under the terms of the
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* GNU GPL, version 2 or (at your option) any later version.
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*
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* You should have received a copy of the GNU (Lesser) General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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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 "hw/hw.h"
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#include "qapi/qmp/qerror.h"
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#include "qemu/error-report.h"
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#include "sysemu/block-backend.h"
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#include "sysemu/blockdev.h"
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#include "sysemu/sysemu.h"
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#include "net/net.h"
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#include "hw/boards.h"
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#include "hw/loader.h"
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#include "hw/virtio/virtio.h"
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#include "exec/address-spaces.h"
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#include "sysemu/qtest.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/s390-virtio.h"
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#include "hw/s390x/storage-keys.h"
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#include "hw/s390x/ipl.h"
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#include "cpu.h"
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#define MAX_BLK_DEVS 10
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#define S390_TOD_CLOCK_VALUE_MISSING 0x00
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#define S390_TOD_CLOCK_VALUE_PRESENT 0x01
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static S390CPU **cpu_states;
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S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
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{
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if (cpu_addr >= max_cpus) {
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return NULL;
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}
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/* Fast lookup via CPU ID */
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return cpu_states[cpu_addr];
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}
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void s390_init_ipl_dev(const char *kernel_filename,
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const char *kernel_cmdline,
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const char *initrd_filename,
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const char *firmware,
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const char *netboot_fw,
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bool enforce_bios)
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{
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Object *new = object_new(TYPE_S390_IPL);
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DeviceState *dev = DEVICE(new);
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if (kernel_filename) {
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qdev_prop_set_string(dev, "kernel", kernel_filename);
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}
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if (initrd_filename) {
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qdev_prop_set_string(dev, "initrd", initrd_filename);
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}
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qdev_prop_set_string(dev, "cmdline", kernel_cmdline);
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qdev_prop_set_string(dev, "firmware", firmware);
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qdev_prop_set_string(dev, "netboot_fw", netboot_fw);
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qdev_prop_set_bit(dev, "enforce_bios", enforce_bios);
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object_property_add_child(qdev_get_machine(), TYPE_S390_IPL,
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new, NULL);
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object_unref(new);
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qdev_init_nofail(dev);
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}
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void s390_init_cpus(MachineState *machine)
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{
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int i;
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gchar *name;
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if (machine->cpu_model == NULL) {
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machine->cpu_model = s390_default_cpu_model_name();
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}
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cpu_states = g_new0(S390CPU *, max_cpus);
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for (i = 0; i < max_cpus; i++) {
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name = g_strdup_printf("cpu[%i]", i);
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object_property_add_link(OBJECT(machine), name, TYPE_S390_CPU,
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(Object **) &cpu_states[i],
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object_property_allow_set_link,
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OBJ_PROP_LINK_UNREF_ON_RELEASE,
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&error_abort);
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g_free(name);
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}
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for (i = 0; i < smp_cpus; i++) {
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s390x_new_cpu(machine->cpu_model, i, &error_fatal);
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}
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}
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void s390_create_virtio_net(BusState *bus, const char *name)
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{
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int i;
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for (i = 0; i < nb_nics; i++) {
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NICInfo *nd = &nd_table[i];
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DeviceState *dev;
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if (!nd->model) {
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nd->model = g_strdup("virtio");
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}
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qemu_check_nic_model(nd, "virtio");
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dev = qdev_create(bus, name);
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qdev_set_nic_properties(dev, nd);
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qdev_init_nofail(dev);
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}
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}
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void gtod_save(QEMUFile *f, void *opaque)
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{
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uint64_t tod_low;
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uint8_t tod_high;
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int r;
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r = s390_get_clock(&tod_high, &tod_low);
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if (r) {
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warn_report("Unable to get guest clock for migration: %s",
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strerror(-r));
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error_printf("Guest clock will not be migrated "
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"which could cause the guest to hang.");
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qemu_put_byte(f, S390_TOD_CLOCK_VALUE_MISSING);
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return;
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}
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qemu_put_byte(f, S390_TOD_CLOCK_VALUE_PRESENT);
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qemu_put_byte(f, tod_high);
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qemu_put_be64(f, tod_low);
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}
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int gtod_load(QEMUFile *f, void *opaque, int version_id)
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{
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uint64_t tod_low;
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uint8_t tod_high;
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int r;
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if (qemu_get_byte(f) == S390_TOD_CLOCK_VALUE_MISSING) {
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warn_report("Guest clock was not migrated. This could "
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"cause the guest to hang.");
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return 0;
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}
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tod_high = qemu_get_byte(f);
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tod_low = qemu_get_be64(f);
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r = s390_set_clock(&tod_high, &tod_low);
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if (r) {
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warn_report("Unable to set guest clock for migration: %s",
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strerror(-r));
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error_printf("Guest clock will not be restored "
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"which could cause the guest to hang.");
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}
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return 0;
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}
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void s390_nmi(NMIState *n, int cpu_index, Error **errp)
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{
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CPUState *cs = qemu_get_cpu(cpu_index);
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if (s390_cpu_restart(S390_CPU(cs))) {
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error_setg(errp, QERR_UNSUPPORTED);
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}
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}
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void s390_machine_reset(void)
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{
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S390CPU *ipl_cpu = S390_CPU(qemu_get_cpu(0));
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s390_cmma_reset();
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qemu_devices_reset();
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s390_crypto_reset();
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/* all cpus are stopped - configure and start the ipl cpu only */
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s390_ipl_prepare_cpu(ipl_cpu);
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s390_cpu_set_state(CPU_STATE_OPERATING, ipl_cpu);
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}
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