hw/misc/pvpanic-isa.c

   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 #include "qemu/osdep.h"
  16 #include "qemu/module.h"
  17 #include "sysemu/runstate.h"
  18
  19 #include "hw/nvram/fw_cfg.h"
  20 #include "hw/qdev-properties.h"
  21 #include "hw/misc/pvpanic.h"
  22 #include "qom/object.h"
  23 #include "hw/isa/isa.h"
  24
  25 OBJECT_DECLARE_SIMPLE_TYPE(PVPanicISAState, PVPANIC_ISA_DEVICE)
  26
  27 /*
  28  * PVPanicISAState for ISA device and
  29  * use ioport.
  30  */
  31 struct PVPanicISAState {
  32     ISADevice parent_obj;
  33
  34     uint16_t ioport;
  35     PVPanicState pvpanic;
  36 };
  37
  38 static void pvpanic_isa_initfn(Object *obj)
  39 {
  40     PVPanicISAState *s = PVPANIC_ISA_DEVICE(obj);
  41
  42     pvpanic_setup_io(&s->pvpanic, DEVICE(s), 1);
  43 }
  44
  45 static void pvpanic_isa_realizefn(DeviceState *dev, Error **errp)
  46 {
  47     ISADevice *d = ISA_DEVICE(dev);
  48     PVPanicISAState *s = PVPANIC_ISA_DEVICE(dev);
  49     PVPanicState *ps = &s->pvpanic;
  50     FWCfgState *fw_cfg = fw_cfg_find();
  51     uint16_t *pvpanic_port;
  52
  53     if (!fw_cfg) {
  54         return;
  55     }
  56
  57     pvpanic_port = g_malloc(sizeof(*pvpanic_port));
  58     *pvpanic_port = cpu_to_le16(s->ioport);
  59     fw_cfg_add_file(fw_cfg, "etc/pvpanic-port", pvpanic_port,
  60                     sizeof(*pvpanic_port));
  61
  62     isa_register_ioport(d, &ps->mr, s->ioport);
  63 }
  64
  65 static Property pvpanic_isa_properties[] = {
  66     DEFINE_PROP_UINT16(PVPANIC_IOPORT_PROP, PVPanicISAState, ioport, 0x505),
  67     DEFINE_PROP_UINT8("events", PVPanicISAState, pvpanic.events, PVPANIC_PANICKED | PVPANIC_CRASHLOADED),
  68     DEFINE_PROP_END_OF_LIST(),
  69 };
  70
  71 static void pvpanic_isa_class_init(ObjectClass *klass, void *data)
  72 {
  73     DeviceClass *dc = DEVICE_CLASS(klass);
  74
  75     dc->realize = pvpanic_isa_realizefn;
  76     device_class_set_props(dc, pvpanic_isa_properties);
  77     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
  78 }
  79
  80 static TypeInfo pvpanic_isa_info = {
  81     .name          = TYPE_PVPANIC_ISA_DEVICE,
  82     .parent        = TYPE_ISA_DEVICE,
  83     .instance_size = sizeof(PVPanicISAState),
  84     .instance_init = pvpanic_isa_initfn,
  85     .class_init    = pvpanic_isa_class_init,
  86 };
  87
  88 static void pvpanic_register_types(void)
  89 {
  90     type_register_static(&pvpanic_isa_info);
  91 }
  92
  93 type_init(pvpanic_register_types)