diff options
| -rw-r--r-- | default-configs/i386-softmmu.mak | 1 | ||||
| -rw-r--r-- | default-configs/x86_64-softmmu.mak | 1 | ||||
| -rw-r--r-- | hw/misc/Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/misc/pvpanic.c | 123 |
4 files changed, 127 insertions, 0 deletions
diff --git a/default-configs/i386-softmmu.mak b/default-configs/i386-softmmu.mak index bc716a0..4e30505 100644 --- a/default-configs/i386-softmmu.mak +++ b/default-configs/i386-softmmu.mak @@ -44,3 +44,4 @@ CONFIG_LPC_ICH9=y CONFIG_PCI_Q35=y CONFIG_APIC=y CONFIG_IOAPIC=y +CONFIG_PVPANIC=y diff --git a/default-configs/x86_64-softmmu.mak b/default-configs/x86_64-softmmu.mak index e53f627..5af8fd3 100644 --- a/default-configs/x86_64-softmmu.mak +++ b/default-configs/x86_64-softmmu.mak @@ -44,3 +44,4 @@ CONFIG_LPC_ICH9=y CONFIG_PCI_Q35=y CONFIG_APIC=y CONFIG_IOAPIC=y +CONFIG_PVPANIC=y diff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs index 11b18a4..2578e29 100644 --- a/hw/misc/Makefile.objs +++ b/hw/misc/Makefile.objs @@ -39,3 +39,5 @@ obj-$(CONFIG_OMAP) += omap_tap.o obj-$(CONFIG_PXA2XX) += pxa2xx_pcmcia.o obj-$(CONFIG_SLAVIO) += slavio_misc.o obj-$(CONFIG_ZYNQ) += zynq_slcr.o + +obj-$(CONFIG_PVPANIC) += pvpanic.o diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c new file mode 100644 index 0000000..01cfe0b --- /dev/null +++ b/hw/misc/pvpanic.c @@ -0,0 +1,123 @@ +/* + * QEMU simulated pvpanic device. + * + * Copyright Fujitsu, Corp. 2013 + * + * Authors: + * Wen Congyang <wency@cn.fujitsu.com> + * Hu Tao <hutao@cn.fujitsu.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#include "qapi/qmp/qobject.h" +#include "qapi/qmp/qjson.h" +#include "monitor/monitor.h" +#include "sysemu/sysemu.h" +#include "qemu/log.h" + +/* The bit of supported pv event */ +#define PVPANIC_F_PANICKED 0 + +/* The pv event value */ +#define PVPANIC_PANICKED (1 << PVPANIC_F_PANICKED) + +#define TYPE_ISA_PVPANIC_DEVICE "pvpanic" +#define ISA_PVPANIC_DEVICE(obj) \ + OBJECT_CHECK(PVPanicState, (obj), TYPE_ISA_PVPANIC_DEVICE) + +static void panicked_mon_event(const char *action) +{ + QObject *data; + + data = qobject_from_jsonf("{ 'action': %s }", action); + monitor_protocol_event(QEVENT_GUEST_PANICKED, data); + qobject_decref(data); +} + +static void handle_event(int event) +{ + static bool logged; + + if (event & ~PVPANIC_PANICKED && !logged) { + qemu_log_mask(LOG_GUEST_ERROR, "pvpanic: unknown event %#x.\n", event); + logged = true; + } + + if (event & PVPANIC_PANICKED) { + panicked_mon_event("pause"); + vm_stop(RUN_STATE_GUEST_PANICKED); + return; + } +} + +#include "hw/isa/isa.h" + +typedef struct PVPanicState { + ISADevice parent_obj; + + MemoryRegion io; + uint16_t ioport; +} PVPanicState; + +/* return supported events on read */ +static uint64_t pvpanic_ioport_read(void *opaque, hwaddr addr, unsigned size) +{ + return PVPANIC_PANICKED; +} + +static void pvpanic_ioport_write(void *opaque, hwaddr addr, uint64_t val, + unsigned size) +{ + handle_event(val); +} + +static const MemoryRegionOps pvpanic_ops = { + .read = pvpanic_ioport_read, + .write = pvpanic_ioport_write, + .impl = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + +static int pvpanic_isa_initfn(ISADevice *dev) +{ + PVPanicState *s = ISA_PVPANIC_DEVICE(dev); + + memory_region_init_io(&s->io, &pvpanic_ops, s, "pvpanic", 1); + isa_register_ioport(dev, &s->io, s->ioport); + + return 0; +} + +static Property pvpanic_isa_properties[] = { + DEFINE_PROP_UINT16("ioport", PVPanicState, ioport, 0x505), + DEFINE_PROP_END_OF_LIST(), +}; + +static void pvpanic_isa_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + ISADeviceClass *ic = ISA_DEVICE_CLASS(klass); + + ic->init = pvpanic_isa_initfn; + dc->no_user = 1; + dc->props = pvpanic_isa_properties; +} + +static TypeInfo pvpanic_isa_info = { + .name = TYPE_ISA_PVPANIC_DEVICE, + .parent = TYPE_ISA_DEVICE, + .instance_size = sizeof(PVPanicState), + .class_init = pvpanic_isa_class_init, +}; + +static void pvpanic_register_types(void) +{ + type_register_static(&pvpanic_isa_info); +} + +type_init(pvpanic_register_types) |