qemu

isa_ipmi_bt.c (5218B)

---

 /*
  * 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/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"
 #include "hw/acpi/ipmi.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) {
         iib->irq = isa_get_irq(isadev, 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);
     AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_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;
     adevc->build_dev_aml = build_ipmi_dev_aml;
 }
 
 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 },
         { TYPE_ACPI_DEV_AML_IF },
         { }
     }
 };
 
 static void ipmi_register_types(void)
 {
     type_register_static(&isa_ipmi_bt_info);
 }
 
 type_init(ipmi_register_types)