qemu

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/*
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 * QEMU PCI IPMI BT emulation
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 *
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 * Copyright (c) 2017 Corey Minyard, MontaVista Software, LLC
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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 * THE SOFTWARE.
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 */
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#include "qemu/osdep.h"
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#include "migration/vmstate.h"
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#include "qapi/error.h"
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#include "hw/ipmi/ipmi_bt.h"
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#include "hw/pci/pci_device.h"
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#include "qom/object.h"
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#define TYPE_PCI_IPMI_BT "pci-ipmi-bt"
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OBJECT_DECLARE_SIMPLE_TYPE(PCIIPMIBTDevice, PCI_IPMI_BT)
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struct PCIIPMIBTDevice {
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    PCIDevice dev;
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    IPMIBT bt;
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    bool irq_enabled;
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    uint32_t uuid;
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};
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static void pci_ipmi_raise_irq(IPMIBT *ik)
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{
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    PCIIPMIBTDevice *pik = ik->opaque;
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    pci_set_irq(&pik->dev, true);
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}
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static void pci_ipmi_lower_irq(IPMIBT *ik)
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{
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    PCIIPMIBTDevice *pik = ik->opaque;
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    pci_set_irq(&pik->dev, false);
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}
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static void pci_ipmi_bt_realize(PCIDevice *pd, Error **errp)
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{
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    Error *err = NULL;
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    PCIIPMIBTDevice *pik = PCI_IPMI_BT(pd);
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    IPMIInterface *ii = IPMI_INTERFACE(pd);
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    IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
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    if (!pik->bt.bmc) {
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        error_setg(errp, "IPMI device requires a bmc attribute to be set");
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        return;
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    }
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    pik->uuid = ipmi_next_uuid();
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    pik->bt.bmc->intf = ii;
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    pik->bt.opaque = pik;
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    pci_config_set_prog_interface(pd->config, 0x02); /* BT */
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    pci_config_set_interrupt_pin(pd->config, 0x01);
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    pik->bt.use_irq = 1;
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    pik->bt.raise_irq = pci_ipmi_raise_irq;
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    pik->bt.lower_irq = pci_ipmi_lower_irq;
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    iic->init(ii, 8, &err);
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    if (err) {
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        error_propagate(errp, err);
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        return;
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    }
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    pci_register_bar(pd, 0, PCI_BASE_ADDRESS_SPACE_IO, &pik->bt.io);
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}
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const VMStateDescription vmstate_PCIIPMIBTDevice = {
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    .name = TYPE_IPMI_INTERFACE_PREFIX "pci-bt",
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    .version_id = 1,
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    .minimum_version_id = 1,
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    .fields = (const VMStateField[]) {
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        VMSTATE_PCI_DEVICE(dev, PCIIPMIBTDevice),
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        VMSTATE_STRUCT(bt, PCIIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT),
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        VMSTATE_END_OF_LIST()
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    }
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};
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static void pci_ipmi_bt_instance_init(Object *obj)
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{
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    PCIIPMIBTDevice *pik = PCI_IPMI_BT(obj);
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    ipmi_bmc_find_and_link(obj, (Object **) &pik->bt.bmc);
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}
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static void *pci_ipmi_bt_get_backend_data(IPMIInterface *ii)
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{
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    PCIIPMIBTDevice *pik = PCI_IPMI_BT(ii);
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    return &pik->bt;
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}
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static void pci_ipmi_bt_class_init(ObjectClass *oc, void *data)
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{
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    DeviceClass *dc = DEVICE_CLASS(oc);
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    PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
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    IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc);
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    pdc->vendor_id = PCI_VENDOR_ID_QEMU;
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    pdc->device_id = PCI_DEVICE_ID_QEMU_IPMI;
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    pdc->revision = 1;
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    pdc->class_id = PCI_CLASS_SERIAL_IPMI;
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    dc->vmsd = &vmstate_PCIIPMIBTDevice;
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    dc->desc = "PCI IPMI BT";
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    pdc->realize = pci_ipmi_bt_realize;
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    iic->get_backend_data = pci_ipmi_bt_get_backend_data;
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    ipmi_bt_class_init(iic);
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}
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static const TypeInfo pci_ipmi_bt_info = {
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    .name          = TYPE_PCI_IPMI_BT,
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    .parent        = TYPE_PCI_DEVICE,
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    .instance_size = sizeof(PCIIPMIBTDevice),
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    .instance_init = pci_ipmi_bt_instance_init,
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    .class_init    = pci_ipmi_bt_class_init,
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    .interfaces = (InterfaceInfo[]) {
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        { TYPE_IPMI_INTERFACE },
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        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
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        { }
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    }
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};
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static void pci_ipmi_bt_register_types(void)
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{
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    type_register_static(&pci_ipmi_bt_info);
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}
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type_init(pci_ipmi_bt_register_types)
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