*/
#include "hw/hw.h"
-#include "block/block.h"
+#include "qapi/qmp/qerror.h"
+#include "sysemu/block-backend.h"
#include "sysemu/blockdev.h"
#include "sysemu/sysemu.h"
#include "net/net.h"
#include "hw/boards.h"
-#include "monitor/monitor.h"
#include "hw/loader.h"
#include "hw/virtio/virtio.h"
#include "hw/sysbus.h"
#include "hw/s390x/s390-virtio-bus.h"
#include "hw/s390x/sclp.h"
+#include "hw/s390x/s390_flic.h"
#include "hw/s390x/s390-virtio.h"
+#include "hw/s390x/storage-keys.h"
+#include "cpu.h"
//#define DEBUG_S390
#define MAX_BLK_DEVS 10
#define ZIPL_FILENAME "s390-zipl.rom"
+#define TYPE_S390_MACHINE "s390-machine"
+
+#define S390_TOD_CLOCK_VALUE_MISSING 0x00
+#define S390_TOD_CLOCK_VALUE_PRESENT 0x01
static VirtIOS390Bus *s390_bus;
static S390CPU **ipi_states;
if (mem > ram_size) {
VirtIOS390Device *dev = s390_virtio_bus_find_vring(s390_bus, mem, &i);
if (dev) {
+ /*
+ * Older kernels will use the virtqueue before setting DRIVER_OK.
+ * In this case the feature bits are not yet up to date, meaning
+ * that several funny things can happen, e.g. the guest thinks
+ * EVENT_IDX is on and QEMU thinks it is off. Let's force a feature
+ * and status sync.
+ */
+ if (!(dev->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK)) {
+ s390_virtio_device_update_status(dev);
+ }
virtio_queue_notify(dev->vdev, i);
} else {
r = -EINVAL;
return -EINVAL;
}
virtio_reset(dev->vdev);
- stb_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS, 0);
+ address_space_stb(&address_space_memory,
+ dev->dev_offs + VIRTIO_DEV_OFFS_STATUS, 0,
+ MEMTXATTRS_UNSPECIFIED, NULL);
s390_virtio_device_sync(dev);
s390_virtio_reset_idx(dev);
s390_virtio_hcall_set_status);
}
-/*
- * The number of running CPUs. On s390 a shutdown is the state of all CPUs
- * being either stopped or disabled (for interrupts) waiting. We have to
- * track this number to call the shutdown sequence accordingly. This
- * number is modified either on startup or while holding the big qemu lock.
- */
-static unsigned s390_running_cpus;
-
-void s390_add_running_cpu(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- CPUS390XState *env = &cpu->env;
-
- if (cs->halted) {
- s390_running_cpus++;
- cs->halted = 0;
- env->exception_index = -1;
- }
-}
-
-unsigned s390_del_running_cpu(S390CPU *cpu)
-{
- CPUState *cs = CPU(cpu);
- CPUS390XState *env = &cpu->env;
-
- if (cs->halted == 0) {
- assert(s390_running_cpus >= 1);
- s390_running_cpus--;
- cs->halted = 1;
- env->exception_index = EXCP_HLT;
- }
- return s390_running_cpus;
-}
-
void s390_init_ipl_dev(const char *kernel_filename,
const char *kernel_cmdline,
const char *initrd_filename,
- const char *firmware)
+ const char *firmware,
+ bool enforce_bios)
{
DeviceState *dev;
}
qdev_prop_set_string(dev, "cmdline", kernel_cmdline);
qdev_prop_set_string(dev, "firmware", firmware);
+ qdev_prop_set_bit(dev, "enforce_bios", enforce_bios);
+ object_property_add_child(qdev_get_machine(), "s390-ipl",
+ OBJECT(dev), NULL);
qdev_init_nofail(dev);
}
-void s390_init_cpus(const char *cpu_model, uint8_t *storage_keys)
+void s390_init_cpus(const char *cpu_model)
{
int i;
ipi_states[i] = cpu;
cs->halted = 1;
- cpu->env.exception_index = EXCP_HLT;
- cpu->env.storage_keys = storage_keys;
+ cs->exception_index = EXCP_HLT;
}
}
}
}
+void gtod_save(QEMUFile *f, void *opaque)
+{
+ uint64_t tod_low;
+ uint8_t tod_high;
+ int r;
+
+ r = s390_get_clock(&tod_high, &tod_low);
+ if (r) {
+ fprintf(stderr, "WARNING: Unable to get guest clock for migration. "
+ "Error code %d. Guest clock will not be migrated "
+ "which could cause the guest to hang.\n", r);
+ qemu_put_byte(f, S390_TOD_CLOCK_VALUE_MISSING);
+ return;
+ }
+
+ qemu_put_byte(f, S390_TOD_CLOCK_VALUE_PRESENT);
+ qemu_put_byte(f, tod_high);
+ qemu_put_be64(f, tod_low);
+}
+
+int gtod_load(QEMUFile *f, void *opaque, int version_id)
+{
+ uint64_t tod_low;
+ uint8_t tod_high;
+ int r;
+
+ if (qemu_get_byte(f) == S390_TOD_CLOCK_VALUE_MISSING) {
+ fprintf(stderr, "WARNING: Guest clock was not migrated. This could "
+ "cause the guest to hang.\n");
+ return 0;
+ }
+
+ tod_high = qemu_get_byte(f);
+ tod_low = qemu_get_be64(f);
+
+ r = s390_set_clock(&tod_high, &tod_low);
+ if (r) {
+ fprintf(stderr, "WARNING: Unable to set guest clock value. "
+ "s390_get_clock returned error %d. This could cause "
+ "the guest to hang.\n", r);
+ }
+
+ return 0;
+}
+
/* PC hardware initialisation */
-static void s390_init(QEMUMachineInitArgs *args)
+static void s390_init(MachineState *machine)
{
- ram_addr_t my_ram_size = args->ram_size;
+ ram_addr_t my_ram_size = machine->ram_size;
MemoryRegion *sysmem = get_system_memory();
MemoryRegion *ram = g_new(MemoryRegion, 1);
- int shift = 0;
- uint8_t *storage_keys;
+ int increment_size = 20;
void *virtio_region;
hwaddr virtio_region_len;
hwaddr virtio_region_start;
- /* s390x ram size detection needs a 16bit multiplier + an increment. So
- guests > 64GB can be specified in 2MB steps etc. */
- while ((my_ram_size >> (20 + shift)) > 65535) {
- shift++;
+ /*
+ * The storage increment size is a multiple of 1M and is a power of 2.
+ * The number of storage increments must be MAX_STORAGE_INCREMENTS or
+ * fewer.
+ */
+ while ((my_ram_size >> increment_size) > MAX_STORAGE_INCREMENTS) {
+ increment_size++;
}
- my_ram_size = my_ram_size >> (20 + shift) << (20 + shift);
+ my_ram_size = my_ram_size >> increment_size << increment_size;
/* let's propagate the changed ram size into the global variable. */
ram_size = my_ram_size;
/* get a BUS */
s390_bus = s390_virtio_bus_init(&my_ram_size);
s390_sclp_init();
- s390_init_ipl_dev(args->kernel_filename, args->kernel_cmdline,
- args->initrd_filename, ZIPL_FILENAME);
+ s390_init_ipl_dev(machine->kernel_filename, machine->kernel_cmdline,
+ machine->initrd_filename, ZIPL_FILENAME, false);
+ s390_flic_init();
/* register hypercalls */
s390_virtio_register_hcalls();
/* allocate RAM */
- memory_region_init_ram(ram, NULL, "s390.ram", my_ram_size);
+ memory_region_init_ram(ram, NULL, "s390.ram", my_ram_size, &error_abort);
vmstate_register_ram_global(ram);
memory_region_add_subregion(sysmem, 0, ram);
cpu_physical_memory_unmap(virtio_region, virtio_region_len, 1,
virtio_region_len);
- /* allocate storage keys */
- storage_keys = g_malloc0(my_ram_size / TARGET_PAGE_SIZE);
+ /* Initialize storage key device */
+ s390_skeys_init();
/* init CPUs */
- s390_init_cpus(args->cpu_model, storage_keys);
+ s390_init_cpus(machine->cpu_model);
/* Create VirtIO network adapters */
s390_create_virtio_net((BusState *)s390_bus, "virtio-net-s390");
+
+ /* Register savevm handler for guest TOD clock */
+ register_savevm(NULL, "todclock", 0, 1, gtod_save, gtod_load, NULL);
+}
+
+void s390_nmi(NMIState *n, int cpu_index, Error **errp)
+{
+ CPUState *cs = qemu_get_cpu(cpu_index);
+
+ if (s390_cpu_restart(S390_CPU(cs))) {
+ error_setg(errp, QERR_UNSUPPORTED);
+ }
+}
+
+static void s390_machine_class_init(ObjectClass *oc, void *data)
+{
+ MachineClass *mc = MACHINE_CLASS(oc);
+ NMIClass *nc = NMI_CLASS(oc);
+
+ mc->name = "s390-virtio";
+ mc->alias = "s390";
+ mc->desc = "VirtIO based S390 machine";
+ mc->init = s390_init;
+ mc->block_default_type = IF_VIRTIO;
+ mc->max_cpus = 255;
+ mc->no_serial = 1;
+ mc->no_parallel = 1;
+ mc->use_virtcon = 1;
+ mc->no_floppy = 1;
+ mc->no_cdrom = 1;
+ mc->no_sdcard = 1;
+ nc->nmi_monitor_handler = s390_nmi;
}
-static QEMUMachine s390_machine = {
- .name = "s390-virtio",
- .alias = "s390",
- .desc = "VirtIO based S390 machine",
- .init = s390_init,
- .block_default_type = IF_VIRTIO,
- .no_cdrom = 1,
- .no_floppy = 1,
- .no_serial = 1,
- .no_parallel = 1,
- .no_sdcard = 1,
- .use_virtcon = 1,
- .max_cpus = 255,
- .is_default = 1,
+static const TypeInfo s390_machine_info = {
+ .name = TYPE_S390_MACHINE,
+ .parent = TYPE_MACHINE,
+ .class_init = s390_machine_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_NMI },
+ { }
+ },
};
-static void s390_machine_init(void)
+static void s390_machine_register_types(void)
{
- qemu_register_machine(&s390_machine);
+ type_register_static(&s390_machine_info);
}
-machine_init(s390_machine_init);
+type_init(s390_machine_register_types)
projects / qemu.git / blobdiff