text: /*
   * QEMU ISA IPMI BT emulation
   *
   * Copyright (c) 2015 Corey Minyard, MontaVista Software, LLC
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #include "qemu/osdep.h"
  #include "qemu/log.h"
  #include "qemu/module.h"
  #include "qapi/error.h"
  #include "hw/irq.h"
  #include "hw/ipmi/ipmi_bt.h"
  #include "hw/isa/isa.h"
  #include "hw/qdev-properties.h"
  #include "migration/vmstate.h"
  #include "qom/object.h"
  
  #define TYPE_ISA_IPMI_BT "isa-ipmi-bt"
  OBJECT_DECLARE_SIMPLE_TYPE(ISAIPMIBTDevice, ISA_IPMI_BT)
  
  struct ISAIPMIBTDevice {
      ISADevice dev;
      int32_t isairq;
      qemu_irq irq;
      IPMIBT bt;
      uint32_t uuid;
  };
  
  static void isa_ipmi_bt_get_fwinfo(struct IPMIInterface *ii, IPMIFwInfo *info)
  {
      ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii);
  
      ipmi_bt_get_fwinfo(&iib->bt, info);
      info->interrupt_number = iib->isairq;
      info->i2c_slave_address = iib->bt.bmc->slave_addr;
      info->uuid = iib->uuid;
  }
  
  static void isa_ipmi_bt_raise_irq(IPMIBT *ib)
  {
      ISAIPMIBTDevice *iib = ib->opaque;
  
      qemu_irq_raise(iib->irq);
  }
  
  static void isa_ipmi_bt_lower_irq(IPMIBT *ib)
  {
      ISAIPMIBTDevice *iib = ib->opaque;
  
      qemu_irq_lower(iib->irq);
  }
  
  static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp)
  {
      Error *err = NULL;
      ISADevice *isadev = ISA_DEVICE(dev);
      ISAIPMIBTDevice *iib = ISA_IPMI_BT(dev);
      IPMIInterface *ii = IPMI_INTERFACE(dev);
      IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
  
      if (!iib->bt.bmc) {
          error_setg(errp, "IPMI device requires a bmc attribute to be set");
          return;
      }
  
      iib->uuid = ipmi_next_uuid();
  
      iib->bt.bmc->intf = ii;
      iib->bt.opaque = iib;
  
      iic->init(ii, 0, &err);
      if (err) {
          error_propagate(errp, err);
          return;
      }
  
      if (iib->isairq > 0) {
          isa_init_irq(isadev, &iib->irq, iib->isairq);
          iib->bt.use_irq = 1;
          iib->bt.raise_irq = isa_ipmi_bt_raise_irq;
          iib->bt.lower_irq = isa_ipmi_bt_lower_irq;
      }
  
      qdev_set_legacy_instance_id(dev, iib->bt.io_base, iib->bt.io_length);
  
      isa_register_ioport(isadev, &iib->bt.io, iib->bt.io_base);
  }
  
  static const VMStateDescription vmstate_ISAIPMIBTDevice = {
      .name = TYPE_IPMI_INTERFACE_PREFIX "isa-bt",
      .version_id = 2,
      .minimum_version_id = 2,
      /*
       * Version 1 had messed up the array transfer, it's not even usable
       * because it used VMSTATE_VBUFFER_UINT32, but it did not transfer
       * the buffer length, so random things would happen.
       */
      .fields      = (VMStateField[]) {
          VMSTATE_STRUCT(bt, ISAIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT),
          VMSTATE_END_OF_LIST()
      }
  };
  
  static void isa_ipmi_bt_init(Object *obj)
  {
      ISAIPMIBTDevice *iib = ISA_IPMI_BT(obj);
  
      ipmi_bmc_find_and_link(obj, (Object **) &iib->bt.bmc);
  
      vmstate_register(NULL, 0, &vmstate_ISAIPMIBTDevice, iib);
  }
  
  static void *isa_ipmi_bt_get_backend_data(IPMIInterface *ii)
  {
      ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii);
  
      return &iib->bt;
  }
  
  static Property ipmi_isa_properties[] = {
      DEFINE_PROP_UINT32("ioport", ISAIPMIBTDevice, bt.io_base,  0xe4),
      DEFINE_PROP_INT32("irq",   ISAIPMIBTDevice, isairq,  5),
      DEFINE_PROP_END_OF_LIST(),
  };
  
  static void isa_ipmi_bt_class_init(ObjectClass *oc, void *data)
  {
      DeviceClass *dc = DEVICE_CLASS(oc);
      IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc);
  
      dc->realize = isa_ipmi_bt_realize;
      device_class_set_props(dc, ipmi_isa_properties);
  
      iic->get_backend_data = isa_ipmi_bt_get_backend_data;
      ipmi_bt_class_init(iic);
      iic->get_fwinfo = isa_ipmi_bt_get_fwinfo;
  }
  
  static const TypeInfo isa_ipmi_bt_info = {
      .name          = TYPE_ISA_IPMI_BT,
      .parent        = TYPE_ISA_DEVICE,
      .instance_size = sizeof(ISAIPMIBTDevice),
      .instance_init = isa_ipmi_bt_init,
      .class_init    = isa_ipmi_bt_class_init,
      .interfaces = (InterfaceInfo[]) {
          { TYPE_IPMI_INTERFACE },
          { }
      }
  };
  
  static void ipmi_register_types(void)
  {
      type_register_static(&isa_ipmi_bt_info);
  }
  
  type_init(ipmi_register_types)
  