include/hw/misc/pvpanic.h

   1 /*
   2  * QEMU simulated pvpanic device.
   3  *
   4  * Copyright Fujitsu, Corp. 2013
   5  *
   6  * Authors:
   7  *     Wen Congyang <wency@cn.fujitsu.com>
   8  *     Hu Tao <hutao@cn.fujitsu.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  *
  13  */
  14
  15 #ifndef HW_MISC_PVPANIC_H
  16 #define HW_MISC_PVPANIC_H
  17
  18 #include "qom/object.h"
  19
  20 #define TYPE_PVPANIC_ISA_DEVICE "pvpanic"
  21 #define TYPE_PVPANIC_PCI_DEVICE "pvpanic-pci"
  22
  23 #define PVPANIC_IOPORT_PROP "ioport"
  24
  25 /* The bit of supported pv event, TODO: include uapi header and remove this */
  26 #define PVPANIC_F_PANICKED      0
  27 #define PVPANIC_F_CRASHLOADED   1
  28
  29 /* The pv event value */
  30 #define PVPANIC_PANICKED        (1 << PVPANIC_F_PANICKED)
  31 #define PVPANIC_CRASHLOADED     (1 << PVPANIC_F_CRASHLOADED)
  32
  33 /*
  34  * PVPanicState for any device type
  35  */
  36 typedef struct PVPanicState PVPanicState;
  37 struct PVPanicState {
  38     MemoryRegion mr;
  39     uint8_t events;
  40 };
  41
  42 void pvpanic_setup_io(PVPanicState *s, DeviceState *dev, unsigned size);
  43
  44 static inline uint16_t pvpanic_port(void)
  45 {
  46     Object *o = object_resolve_path_type("", TYPE_PVPANIC_ISA_DEVICE, NULL);
  47     if (!o) {
  48         return 0;
  49     }
  50     return object_property_get_uint(o, PVPANIC_IOPORT_PROP, NULL);
  51 }
  52
  53 #endif