qemu/hw/misc/pvpanic.c
Anthony Liguori dc11549ec2 pci,misc enhancements
This includes some pci enhancements:
 
 Better support for systems with multiple PCI root buses
 FW cfg interface for more robust pci programming in BIOS
 Minor fixes/cleanups for fw cfg and cross-version migration -
     because of dependencies with other patches
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'mst/tags/for_anthony' into staging

pci,misc enhancements

This includes some pci enhancements:

Better support for systems with multiple PCI root buses
FW cfg interface for more robust pci programming in BIOS
Minor fixes/cleanups for fw cfg and cross-version migration -
    because of dependencies with other patches

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Sun 07 Jul 2013 03:11:18 PM CDT using RSA key ID D28D5469
# gpg: Can't check signature: public key not found

# By David Gibson (10) and others
# Via Michael S. Tsirkin
* mst/tags/for_anthony:
  pci: Fold host_buses list into PCIHostState functionality
  pci: Remove domain from PCIHostBus
  pci: Simpler implementation of primary PCI bus
  pci: Add root bus parameter to pci_nic_init()
  pci: Add root bus argument to pci_get_bus_devfn()
  pci: Replace pci_find_domain() with more general pci_root_bus_path()
  pci: Use helper to find device's root bus in pci_find_domain()
  pci: Abolish pci_find_root_bus()
  pci: Move pci_read_devaddr to pci-hotplug-old.c
  pci: Cleanup configuration for pci-hotplug.c
  pvpanic: fix fwcfg for big endian hosts
  pvpanic: initialization cleanup
  MAINTAINERS: s/Marcelo/Paolo/
  e1000: cleanup process_tx_desc
  pc_piix: cleanup init compat handling
  pc: pass PCI hole ranges to Guests
  pci: store PCI hole ranges in guestinfo structure
  range: add Range structure

Message-id: 1373228271-31223-1-git-send-email-mst@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-07-08 08:00:23 -05:00

153 lines
3.6 KiB
C

/*
* 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"
#include "hw/nvram/fw_cfg.h"
#include "hw/i386/pc.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 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);
isa_register_ioport(d, &s->io, s->ioport);
}
static void pvpanic_fw_cfg(ISADevice *dev, FWCfgState *fw_cfg)
{
PVPanicState *s = ISA_PVPANIC_DEVICE(dev);
uint16_t *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));
}
void pvpanic_init(ISABus *bus)
{
ISADevice *dev;
FWCfgState *fw_cfg = fw_cfg_find();
if (!fw_cfg) {
return;
}
dev = isa_create_simple (bus, TYPE_ISA_PVPANIC_DEVICE);
pvpanic_fw_cfg(dev, fw_cfg);
}
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);
dc->realize = pvpanic_isa_realizefn;
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),
.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)