Add qemu 2.4.0

[kvmfornfv.git] / qemu / hw / misc / pvpanic.c

diff --git a/qemu/hw/misc/pvpanic.c b/qemu/hw/misc/pvpanic.c
new file mode 100644 (file)
index 0000000..994f8af
--- /dev/null
+++ b/qemu/hw/misc/pvpanic.c
@@ -0,0 +1,144 @@
+/*
+ * 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 "sysemu/sysemu.h"
+#include "qemu/log.h"
+
+#include "hw/nvram/fw_cfg.h"
+#include "hw/i386/pc.h"
+#include "qapi-event.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 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) {
+        qapi_event_send_guest_panicked(GUEST_PANIC_ACTION_PAUSE, &error_abort);
+        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 void pvpanic_isa_initfn(Object *obj)
+{
+    PVPanicState *s = ISA_PVPANIC_DEVICE(obj);
+
+    memory_region_init_io(&s->io, OBJECT(s), &pvpanic_ops, s, "pvpanic", 1);
+}
+
+static void pvpanic_isa_realizefn(DeviceState *dev, Error **errp)
+{
+    ISADevice *d = ISA_DEVICE(dev);
+    PVPanicState *s = ISA_PVPANIC_DEVICE(dev);
+    FWCfgState *fw_cfg = fw_cfg_find();
+    uint16_t *pvpanic_port;
+
+    if (!fw_cfg) {
+        return;
+    }
+
+    pvpanic_port = g_malloc(sizeof(*pvpanic_port));
+    *pvpanic_port = cpu_to_le16(s->ioport);
+    fw_cfg_add_file(fw_cfg, "etc/pvpanic-port", pvpanic_port,
+                    sizeof(*pvpanic_port));
+
+    isa_register_ioport(d, &s->io, s->ioport);
+}
+
+#define PVPANIC_IOPORT_PROP "ioport"
+
+uint16_t pvpanic_port(void)
+{
+    Object *o = object_resolve_path_type("", TYPE_ISA_PVPANIC_DEVICE, NULL);
+    if (!o) {
+        return 0;
+    }
+    return object_property_get_int(o, PVPANIC_IOPORT_PROP, NULL);
+}
+
+static Property pvpanic_isa_properties[] = {
+    DEFINE_PROP_UINT16(PVPANIC_IOPORT_PROP, PVPanicState, ioport, 0x505),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
+static void pvpanic_isa_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->realize = pvpanic_isa_realizefn;
+    dc->props = pvpanic_isa_properties;
+    set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+}
+
+static TypeInfo pvpanic_isa_info = {
+    .name          = TYPE_ISA_PVPANIC_DEVICE,
+    .parent        = TYPE_ISA_DEVICE,
+    .instance_size = sizeof(PVPanicState),
+    .instance_init = pvpanic_isa_initfn,
+    .class_init    = pvpanic_isa_class_init,
+};
+
+static void pvpanic_register_types(void)
+{
+    type_register_static(&pvpanic_isa_info);
+}
+
+type_init(pvpanic_register_types)