From e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 28 Aug 2015 09:58:54 +0800 Subject: Add qemu 2.4.0 Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang --- qemu/hw/misc/pvpanic.c | 144 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 qemu/hw/misc/pvpanic.c (limited to 'qemu/hw/misc/pvpanic.c') diff --git a/qemu/hw/misc/pvpanic.c b/qemu/hw/misc/pvpanic.c new file mode 100644 index 000000000..994f8af8e --- /dev/null +++ b/qemu/hw/misc/pvpanic.c @@ -0,0 +1,144 @@ +/* + * QEMU simulated pvpanic device. + * + * Copyright Fujitsu, Corp. 2013 + * + * Authors: + * Wen Congyang + * Hu Tao + * + * 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) -- cgit 1.2.3-korg