LXR qemu/hw/ipmi/isa_ipmi

   1/*
   2 * QEMU ISA IPMI KCS emulation
   3 *
   4 * Copyright (c) 2015,2017 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
  25#include "qemu/osdep.h"
  26#include "qemu/log.h"
  27#include "qemu/module.h"
  28#include "qapi/error.h"
  29#include "hw/irq.h"
  30#include "hw/ipmi/ipmi_kcs.h"
  31#include "hw/isa/isa.h"
  32#include "hw/qdev-properties.h"
  33#include "migration/vmstate.h"
  34#include "qom/object.h"
  35
  36#define TYPE_ISA_IPMI_KCS "isa-ipmi-kcs"
  37OBJECT_DECLARE_SIMPLE_TYPE(ISAIPMIKCSDevice, ISA_IPMI_KCS)
  38
  39struct ISAIPMIKCSDevice {
  40    ISADevice dev;
  41    int32_t isairq;
  42    qemu_irq irq;
  43    IPMIKCS kcs;
  44    uint32_t uuid;
  45};
  46
  47static void isa_ipmi_kcs_get_fwinfo(IPMIInterface *ii, IPMIFwInfo *info)
  48{
  49    ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii);
  50
  51    ipmi_kcs_get_fwinfo(&iik->kcs, info);
  52    info->interrupt_number = iik->isairq;
  53    info->uuid = iik->uuid;
  54}
  55
  56static void isa_ipmi_kcs_raise_irq(IPMIKCS *ik)
  57{
  58    ISAIPMIKCSDevice *iik = ik->opaque;
  59
  60    qemu_irq_raise(iik->irq);
  61}
  62
  63static void isa_ipmi_kcs_lower_irq(IPMIKCS *ik)
  64{
  65    ISAIPMIKCSDevice *iik = ik->opaque;
  66
  67    qemu_irq_lower(iik->irq);
  68}
  69
  70static void ipmi_isa_realize(DeviceState *dev, Error **errp)
  71{
  72    Error *err = NULL;
  73    ISADevice *isadev = ISA_DEVICE(dev);
  74    ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(dev);
  75    IPMIInterface *ii = IPMI_INTERFACE(dev);
  76    IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
  77
  78    if (!iik->kcs.bmc) {
  79        error_setg(errp, "IPMI device requires a bmc attribute to be set");
  80        return;
  81    }
  82
  83    iik->uuid = ipmi_next_uuid();
  84
  85    iik->kcs.bmc->intf = ii;
  86    iik->kcs.opaque = iik;
  87
  88    iic->init(ii, 0, &err);
  89    if (err) {
  90        error_propagate(errp, err);
  91        return;
  92    }
  93
  94    if (iik->isairq > 0) {
  95        isa_init_irq(isadev, &iik->irq, iik->isairq);
  96        iik->kcs.use_irq = 1;
  97        iik->kcs.raise_irq = isa_ipmi_kcs_raise_irq;
  98        iik->kcs.lower_irq = isa_ipmi_kcs_lower_irq;
  99    }
 100
 101    qdev_set_legacy_instance_id(dev, iik->kcs.io_base, iik->kcs.io_length);
 102
 103    isa_register_ioport(isadev, &iik->kcs.io, iik->kcs.io_base);
 104}
 105
 106static bool vmstate_kcs_before_version2(void *opaque, int version)
 107{
 108    return version <= 1;
 109}
 110
 111static const VMStateDescription vmstate_ISAIPMIKCSDevice = {
 112    .name = TYPE_IPMI_INTERFACE,
 113    .version_id = 2,
 114    .minimum_version_id = 1,
 115    .fields      = (VMStateField[]) {
 116        VMSTATE_VSTRUCT_TEST(kcs, ISAIPMIKCSDevice, vmstate_kcs_before_version2,
 117                             0, vmstate_IPMIKCS, IPMIKCS, 1),
 118        VMSTATE_VSTRUCT_V(kcs, ISAIPMIKCSDevice, 2, vmstate_IPMIKCS,
 119                          IPMIKCS, 2),
 120        VMSTATE_END_OF_LIST()
 121    }
 122};
 123
 124static void isa_ipmi_kcs_init(Object *obj)
 125{
 126    ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(obj);
 127
 128    ipmi_bmc_find_and_link(obj, (Object **) &iik->kcs.bmc);
 129
 130    /*
 131     * Version 1 had an incorrect name, it clashed with the BT
 132     * IPMI device, so receive it, but transmit a different
 133     * version.
 134     */
 135    vmstate_register(NULL, 0, &vmstate_ISAIPMIKCSDevice, iik);
 136}
 137
 138static void *isa_ipmi_kcs_get_backend_data(IPMIInterface *ii)
 139{
 140    ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii);
 141
 142    return &iik->kcs;
 143}
 144
 145static Property ipmi_isa_properties[] = {
 146    DEFINE_PROP_UINT32("ioport", ISAIPMIKCSDevice, kcs.io_base,  0xca2),
 147    DEFINE_PROP_INT32("irq",   ISAIPMIKCSDevice, isairq,  5),
 148    DEFINE_PROP_END_OF_LIST(),
 149};
 150
 151static void isa_ipmi_kcs_class_init(ObjectClass *oc, void *data)
 152{
 153    DeviceClass *dc = DEVICE_CLASS(oc);
 154    IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc);
 155
 156    dc->realize = ipmi_isa_realize;
 157    device_class_set_props(dc, ipmi_isa_properties);
 158
 159    iic->get_backend_data = isa_ipmi_kcs_get_backend_data;
 160    ipmi_kcs_class_init(iic);
 161    iic->get_fwinfo = isa_ipmi_kcs_get_fwinfo;
 162}
 163
 164static const TypeInfo isa_ipmi_kcs_info = {
 165    .name          = TYPE_ISA_IPMI_KCS,
 166    .parent        = TYPE_ISA_DEVICE,
 167    .instance_size = sizeof(ISAIPMIKCSDevice),
 168    .instance_init = isa_ipmi_kcs_init,
 169    .class_init    = isa_ipmi_kcs_class_init,
 170    .interfaces = (InterfaceInfo[]) {
 171        { TYPE_IPMI_INTERFACE },
 172        { }
 173    }
 174};
 175
 176static void ipmi_register_types(void)
 177{
 178    type_register_static(&isa_ipmi_kcs_info);
 179}
 180
 181type_init(ipmi_register_types)
 182