2 * QEMU S390 virtio target
5 * Copyright IBM Corp 2012
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * Contributions after 2012-10-29 are licensed under the terms of the
18 * GNU GPL, version 2 or (at your option) any later version.
20 * You should have received a copy of the GNU (Lesser) General Public
21 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
24 #include "qemu/osdep.h"
26 #include "qapi/qmp/qerror.h"
27 #include "qemu/error-report.h"
28 #include "sysemu/block-backend.h"
29 #include "sysemu/blockdev.h"
30 #include "sysemu/sysemu.h"
32 #include "hw/boards.h"
33 #include "hw/loader.h"
34 #include "hw/virtio/virtio.h"
35 #include "sysemu/kvm.h"
36 #include "exec/address-spaces.h"
37 #include "sysemu/qtest.h"
39 #include "hw/s390x/sclp.h"
40 #include "hw/s390x/s390_flic.h"
41 #include "hw/s390x/s390-virtio.h"
42 #include "hw/s390x/storage-keys.h"
43 #include "hw/s390x/ipl.h"
49 #define DPRINTF(fmt, ...) \
50 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
52 #define DPRINTF(fmt, ...) \
56 #define MAX_BLK_DEVS 10
58 #define S390_TOD_CLOCK_VALUE_MISSING 0x00
59 #define S390_TOD_CLOCK_VALUE_PRESENT 0x01
61 static S390CPU **ipi_states;
63 S390CPU *s390_cpu_addr2state(uint16_t cpu_addr)
65 if (cpu_addr >= smp_cpus) {
69 return ipi_states[cpu_addr];
72 void s390_init_ipl_dev(const char *kernel_filename,
73 const char *kernel_cmdline,
74 const char *initrd_filename,
78 Object *new = object_new(TYPE_S390_IPL);
79 DeviceState *dev = DEVICE(new);
81 if (kernel_filename) {
82 qdev_prop_set_string(dev, "kernel", kernel_filename);
84 if (initrd_filename) {
85 qdev_prop_set_string(dev, "initrd", initrd_filename);
87 qdev_prop_set_string(dev, "cmdline", kernel_cmdline);
88 qdev_prop_set_string(dev, "firmware", firmware);
89 qdev_prop_set_bit(dev, "enforce_bios", enforce_bios);
90 object_property_add_child(qdev_get_machine(), TYPE_S390_IPL,
93 qdev_init_nofail(dev);
96 void s390_init_cpus(const char *cpu_model)
100 if (cpu_model == NULL) {
104 ipi_states = g_malloc(sizeof(S390CPU *) * smp_cpus);
106 for (i = 0; i < smp_cpus; i++) {
110 cpu = cpu_s390x_init(cpu_model);
115 cs->exception_index = EXCP_HLT;
120 void s390_create_virtio_net(BusState *bus, const char *name)
124 for (i = 0; i < nb_nics; i++) {
125 NICInfo *nd = &nd_table[i];
129 nd->model = g_strdup("virtio");
132 qemu_check_nic_model(nd, "virtio");
134 dev = qdev_create(bus, name);
135 qdev_set_nic_properties(dev, nd);
136 qdev_init_nofail(dev);
140 void gtod_save(QEMUFile *f, void *opaque)
146 r = s390_get_clock(&tod_high, &tod_low);
148 fprintf(stderr, "WARNING: Unable to get guest clock for migration. "
149 "Error code %d. Guest clock will not be migrated "
150 "which could cause the guest to hang.\n", r);
151 qemu_put_byte(f, S390_TOD_CLOCK_VALUE_MISSING);
155 qemu_put_byte(f, S390_TOD_CLOCK_VALUE_PRESENT);
156 qemu_put_byte(f, tod_high);
157 qemu_put_be64(f, tod_low);
160 int gtod_load(QEMUFile *f, void *opaque, int version_id)
166 if (qemu_get_byte(f) == S390_TOD_CLOCK_VALUE_MISSING) {
167 fprintf(stderr, "WARNING: Guest clock was not migrated. This could "
168 "cause the guest to hang.\n");
172 tod_high = qemu_get_byte(f);
173 tod_low = qemu_get_be64(f);
175 r = s390_set_clock(&tod_high, &tod_low);
177 fprintf(stderr, "WARNING: Unable to set guest clock value. "
178 "s390_get_clock returned error %d. This could cause "
179 "the guest to hang.\n", r);
185 void s390_nmi(NMIState *n, int cpu_index, Error **errp)
187 CPUState *cs = qemu_get_cpu(cpu_index);
189 if (s390_cpu_restart(S390_CPU(cs))) {
190 error_setg(errp, QERR_UNSUPPORTED);
194 void s390_machine_reset(void)
196 S390CPU *ipl_cpu = S390_CPU(qemu_get_cpu(0));
198 qemu_devices_reset();
202 /* all cpus are stopped - configure and start the ipl cpu only */
203 s390_ipl_prepare_cpu(ipl_cpu);
204 s390_cpu_set_state(CPU_STATE_OPERATING, ipl_cpu);