diff options
Diffstat (limited to 'hw/ipmi/isa_ipmi_kcs.c')
| -rw-r--r-- | hw/ipmi/isa_ipmi_kcs.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/hw/ipmi/isa_ipmi_kcs.c b/hw/ipmi/isa_ipmi_kcs.c new file mode 100644 index 000000000..3b23ad08b --- /dev/null +++ b/hw/ipmi/isa_ipmi_kcs.c @@ -0,0 +1,180 @@ +/* + * 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" + +#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 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) { + isa_init_irq(isadev, &iik->irq, 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); +} + +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 = (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 isa_ipmi_kcs_init(Object *obj) +{ + ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(obj); + + ipmi_bmc_find_and_link(obj, (Object **) &iik->kcs.bmc); + + /* + * 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_get_backend_data(IPMIInterface *ii) +{ + ISAIPMIKCSDevice *iik = ISA_IPMI_KCS(ii); + + return &iik->kcs; +} + +static 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); + + 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; +} + +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 }, + { } + } +}; + +static void ipmi_register_types(void) +{ + type_register_static(&isa_ipmi_kcs_info); +} + +type_init(ipmi_register_types) |