LXR qemu/hw/ipmi/pci_ipmi

   1/*
   2 * QEMU PCI IPMI BT emulation
   3 *
   4 * Copyright (c) 2017 Corey Minyard, MontaVista Software, LLC
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24#include "qemu/osdep.h"
  25#include "migration/vmstate.h"
  26#include "qapi/error.h"
  27#include "hw/ipmi/ipmi_bt.h"
  28#include "hw/pci/pci.h"
  29#include "qom/object.h"
  30
  31#define TYPE_PCI_IPMI_BT "pci-ipmi-bt"
  32OBJECT_DECLARE_SIMPLE_TYPE(PCIIPMIBTDevice, PCI_IPMI_BT)
  33
  34struct PCIIPMIBTDevice {
  35    PCIDevice dev;
  36    IPMIBT bt;
  37    bool irq_enabled;
  38    uint32_t uuid;
  39};
  40
  41static void pci_ipmi_raise_irq(IPMIBT *ik)
  42{
  43    PCIIPMIBTDevice *pik = ik->opaque;
  44
  45    pci_set_irq(&pik->dev, true);
  46}
  47
  48static void pci_ipmi_lower_irq(IPMIBT *ik)
  49{
  50    PCIIPMIBTDevice *pik = ik->opaque;
  51
  52    pci_set_irq(&pik->dev, false);
  53}
  54
  55static void pci_ipmi_bt_realize(PCIDevice *pd, Error **errp)
  56{
  57    Error *err = NULL;
  58    PCIIPMIBTDevice *pik = PCI_IPMI_BT(pd);
  59    IPMIInterface *ii = IPMI_INTERFACE(pd);
  60    IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
  61
  62    if (!pik->bt.bmc) {
  63        error_setg(errp, "IPMI device requires a bmc attribute to be set");
  64        return;
  65    }
  66
  67    pik->uuid = ipmi_next_uuid();
  68
  69    pik->bt.bmc->intf = ii;
  70    pik->bt.opaque = pik;
  71
  72    pci_config_set_prog_interface(pd->config, 0x02); /* BT */
  73    pci_config_set_interrupt_pin(pd->config, 0x01);
  74    pik->bt.use_irq = 1;
  75    pik->bt.raise_irq = pci_ipmi_raise_irq;
  76    pik->bt.lower_irq = pci_ipmi_lower_irq;
  77
  78    iic->init(ii, 8, &err);
  79    if (err) {
  80        error_propagate(errp, err);
  81        return;
  82    }
  83    pci_register_bar(pd, 0, PCI_BASE_ADDRESS_SPACE_IO, &pik->bt.io);
  84}
  85
  86const VMStateDescription vmstate_PCIIPMIBTDevice = {
  87    .name = TYPE_IPMI_INTERFACE_PREFIX "pci-bt",
  88    .version_id = 1,
  89    .minimum_version_id = 1,
  90    .fields      = (VMStateField[]) {
  91        VMSTATE_PCI_DEVICE(dev, PCIIPMIBTDevice),
  92        VMSTATE_STRUCT(bt, PCIIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT),
  93        VMSTATE_END_OF_LIST()
  94    }
  95};
  96
  97static void pci_ipmi_bt_instance_init(Object *obj)
  98{
  99    PCIIPMIBTDevice *pik = PCI_IPMI_BT(obj);
 100
 101    ipmi_bmc_find_and_link(obj, (Object **) &pik->bt.bmc);
 102}
 103
 104static void *pci_ipmi_bt_get_backend_data(IPMIInterface *ii)
 105{
 106    PCIIPMIBTDevice *pik = PCI_IPMI_BT(ii);
 107
 108    return &pik->bt;
 109}
 110
 111static void pci_ipmi_bt_class_init(ObjectClass *oc, void *data)
 112{
 113    DeviceClass *dc = DEVICE_CLASS(oc);
 114    PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc);
 115    IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc);
 116
 117    pdc->vendor_id = PCI_VENDOR_ID_QEMU;
 118    pdc->device_id = PCI_DEVICE_ID_QEMU_IPMI;
 119    pdc->revision = 1;
 120    pdc->class_id = PCI_CLASS_SERIAL_IPMI;
 121
 122    dc->vmsd = &vmstate_PCIIPMIBTDevice;
 123    dc->desc = "PCI IPMI BT";
 124    pdc->realize = pci_ipmi_bt_realize;
 125
 126    iic->get_backend_data = pci_ipmi_bt_get_backend_data;
 127    ipmi_bt_class_init(iic);
 128}
 129
 130static const TypeInfo pci_ipmi_bt_info = {
 131    .name          = TYPE_PCI_IPMI_BT,
 132    .parent        = TYPE_PCI_DEVICE,
 133    .instance_size = sizeof(PCIIPMIBTDevice),
 134    .instance_init = pci_ipmi_bt_instance_init,
 135    .class_init    = pci_ipmi_bt_class_init,
 136    .interfaces = (InterfaceInfo[]) {
 137        { TYPE_IPMI_INTERFACE },
 138        { INTERFACE_CONVENTIONAL_PCI_DEVICE },
 139        { }
 140    }
 141};
 142
 143static void pci_ipmi_bt_register_types(void)
 144{
 145    type_register_static(&pci_ipmi_bt_info);
 146}
 147
 148type_init(pci_ipmi_bt_register_types)
 149