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/*
* QEMU ISA IPMI KCS emulation
*
* Copyright (c) 2015,2017 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_kcs.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_KCS "isa-ipmi-kcs"
OBJECT_DECLARE_SIMPLE_TYPE(ISAIPMIKCSDevice, ISA_IPMI_KCS)
struct ISAIPMIKCSDevice {
ISADevice dev;
int32_t isairq;
qemu_irq irq;
IPMIKCS kcs;
uint32_t uuid;
};
static void isa_ipmi_kcs_get_fwinfo(IPMIInterface *ii, IPMIFwInfo *info)
{
ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii);
ipmi_kcs_get_fwinfo(&iik->kcs, info);
info->interrupt_number = iik->isairq;
info->uuid = iik->uuid;
}
static void isa_ipmi_kcs_raise_irq(IPMIKCS *ik)
{
ISAIPMIKCSDevice *iik = ik->opaque;
qemu_irq_raise(iik->irq);
}
static void isa_ipmi_kcs_lower_irq(IPMIKCS *ik)
{
ISAIPMIKCSDevice *iik = ik->opaque;
qemu_irq_lower(iik->irq);
}
static bool vmstate_kcs_before_version2(void *opaque, int version)
{
return version <= 1;
}
static const VMStateDescription vmstate_ISAIPMIKCSDevice = {
.name = TYPE_IPMI_INTERFACE,
.version_id = 2,
.minimum_version_id = 1,
.fields = (const VMStateField[]) {
VMSTATE_VSTRUCT_TEST(kcs, ISAIPMIKCSDevice, vmstate_kcs_before_version2,
0, vmstate_IPMIKCS, IPMIKCS, 1),
VMSTATE_VSTRUCT_V(kcs, ISAIPMIKCSDevice, 2, vmstate_IPMIKCS,
IPMIKCS, 2),
VMSTATE_END_OF_LIST()
}
};
static void ipmi_isa_realize(DeviceState *dev, Error **errp)
{
Error *err = NULL;
ISADevice *isadev = ISA_DEVICE(dev);
ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(dev);
IPMIInterface *ii = IPMI_INTERFACE(dev);
IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii);
if (!iik->kcs.bmc) {
error_setg(errp, "IPMI device requires a bmc attribute to be set");
return;
}
iik->uuid = ipmi_next_uuid();
iik->kcs.bmc->intf = ii;
iik->kcs.opaque = iik;
iic->init(ii, 0, &err);
if (err) {
error_propagate(errp, err);
return;
}
if (iik->isairq > 0) {
iik->irq = isa_get_irq(isadev, iik->isairq);
iik->kcs.use_irq = 1;
iik->kcs.raise_irq = isa_ipmi_kcs_raise_irq;
iik->kcs.lower_irq = isa_ipmi_kcs_lower_irq;
}
qdev_set_legacy_instance_id(dev, iik->kcs.io_base, iik->kcs.io_length);
isa_register_ioport(isadev, &iik->kcs.io, iik->kcs.io_base);
/*
* Version 1 had an incorrect name, it clashed with the BT
* IPMI device, so receive it, but transmit a different
* version.
*/
vmstate_register(NULL, 0, &vmstate_ISAIPMIKCSDevice, iik);
}
static void isa_ipmi_kcs_init(Object *obj)
{
ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(obj);
ipmi_bmc_find_and_link(obj, (Object **) &iik->kcs.bmc);
}
static void *isa_ipmi_kcs_get_backend_data(IPMIInterface *ii)
{
ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii);
return &iik->kcs;
}
static const Property ipmi_isa_properties[] = {
DEFINE_PROP_UINT32("ioport", ISAIPMIKCSDevice, kcs.io_base, 0xca2),
DEFINE_PROP_INT32("irq", ISAIPMIKCSDevice, isairq, 5),
DEFINE_PROP_END_OF_LIST(),
};
static void isa_ipmi_kcs_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 = ipmi_isa_realize;
device_class_set_props(dc, ipmi_isa_properties);
iic->get_backend_data = isa_ipmi_kcs_get_backend_data;
ipmi_kcs_class_init(iic);
iic->get_fwinfo = isa_ipmi_kcs_get_fwinfo;
adevc->build_dev_aml = build_ipmi_dev_aml;
}
static const TypeInfo isa_ipmi_kcs_info = {
.name = TYPE_ISA_IPMI_KCS,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(ISAIPMIKCSDevice),
.instance_init = isa_ipmi_kcs_init,
.class_init = isa_ipmi_kcs_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_IPMI_INTERFACE },
{ TYPE_ACPI_DEV_AML_IF },
{ }
}
};
static void ipmi_register_types(void)
{
type_register_static(&isa_ipmi_kcs_info);
}
type_init(ipmi_register_types)
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