1 /* 2 * QEMU ISA IPMI BT emulation 3 * 4 * Copyright (c) 2015 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/module.h" 27 #include "qapi/error.h" 28 #include "hw/irq.h" 29 #include "hw/ipmi/ipmi_bt.h" 30 #include "hw/isa/isa.h" 31 #include "hw/qdev-properties.h" 32 #include "migration/vmstate.h" 33 #include "qom/object.h" 34 #include "hw/acpi/ipmi.h" 35 36 #define TYPE_ISA_IPMI_BT "isa-ipmi-bt" 37 OBJECT_DECLARE_SIMPLE_TYPE(ISAIPMIBTDevice, ISA_IPMI_BT) 38 39 struct ISAIPMIBTDevice { 40 ISADevice dev; 41 int32_t isairq; 42 qemu_irq irq; 43 IPMIBT bt; 44 uint32_t uuid; 45 }; 46 47 static void isa_ipmi_bt_get_fwinfo(struct IPMIInterface *ii, IPMIFwInfo *info) 48 { 49 ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii); 50 51 ipmi_bt_get_fwinfo(&iib->bt, info); 52 info->interrupt_number = iib->isairq; 53 info->i2c_slave_address = iib->bt.bmc->slave_addr; 54 info->uuid = iib->uuid; 55 } 56 57 static void isa_ipmi_bt_raise_irq(IPMIBT *ib) 58 { 59 ISAIPMIBTDevice *iib = ib->opaque; 60 61 qemu_irq_raise(iib->irq); 62 } 63 64 static void isa_ipmi_bt_lower_irq(IPMIBT *ib) 65 { 66 ISAIPMIBTDevice *iib = ib->opaque; 67 68 qemu_irq_lower(iib->irq); 69 } 70 71 static void isa_ipmi_bt_realize(DeviceState *dev, Error **errp) 72 { 73 Error *err = NULL; 74 ISADevice *isadev = ISA_DEVICE(dev); 75 ISAIPMIBTDevice *iib = ISA_IPMI_BT(dev); 76 IPMIInterface *ii = IPMI_INTERFACE(dev); 77 IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 78 79 if (!iib->bt.bmc) { 80 error_setg(errp, "IPMI device requires a bmc attribute to be set"); 81 return; 82 } 83 84 iib->uuid = ipmi_next_uuid(); 85 86 iib->bt.bmc->intf = ii; 87 iib->bt.opaque = iib; 88 89 iic->init(ii, 0, &err); 90 if (err) { 91 error_propagate(errp, err); 92 return; 93 } 94 95 if (iib->isairq > 0) { 96 iib->irq = isa_get_irq(isadev, iib->isairq); 97 iib->bt.use_irq = 1; 98 iib->bt.raise_irq = isa_ipmi_bt_raise_irq; 99 iib->bt.lower_irq = isa_ipmi_bt_lower_irq; 100 } 101 102 qdev_set_legacy_instance_id(dev, iib->bt.io_base, iib->bt.io_length); 103 104 isa_register_ioport(isadev, &iib->bt.io, iib->bt.io_base); 105 } 106 107 static const VMStateDescription vmstate_ISAIPMIBTDevice = { 108 .name = TYPE_IPMI_INTERFACE_PREFIX "isa-bt", 109 .version_id = 2, 110 .minimum_version_id = 2, 111 /* 112 * Version 1 had messed up the array transfer, it's not even usable 113 * because it used VMSTATE_VBUFFER_UINT32, but it did not transfer 114 * the buffer length, so random things would happen. 115 */ 116 .fields = (VMStateField[]) { 117 VMSTATE_STRUCT(bt, ISAIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT), 118 VMSTATE_END_OF_LIST() 119 } 120 }; 121 122 static void isa_ipmi_bt_init(Object *obj) 123 { 124 ISAIPMIBTDevice *iib = ISA_IPMI_BT(obj); 125 126 ipmi_bmc_find_and_link(obj, (Object **) &iib->bt.bmc); 127 128 vmstate_register(NULL, 0, &vmstate_ISAIPMIBTDevice, iib); 129 } 130 131 static void *isa_ipmi_bt_get_backend_data(IPMIInterface *ii) 132 { 133 ISAIPMIBTDevice *iib = ISA_IPMI_BT(ii); 134 135 return &iib->bt; 136 } 137 138 static Property ipmi_isa_properties[] = { 139 DEFINE_PROP_UINT32("ioport", ISAIPMIBTDevice, bt.io_base, 0xe4), 140 DEFINE_PROP_INT32("irq", ISAIPMIBTDevice, isairq, 5), 141 DEFINE_PROP_END_OF_LIST(), 142 }; 143 144 static void isa_ipmi_bt_class_init(ObjectClass *oc, void *data) 145 { 146 DeviceClass *dc = DEVICE_CLASS(oc); 147 IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc); 148 AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_CLASS(oc); 149 150 dc->realize = isa_ipmi_bt_realize; 151 device_class_set_props(dc, ipmi_isa_properties); 152 153 iic->get_backend_data = isa_ipmi_bt_get_backend_data; 154 ipmi_bt_class_init(iic); 155 iic->get_fwinfo = isa_ipmi_bt_get_fwinfo; 156 adevc->build_dev_aml = build_ipmi_dev_aml; 157 } 158 159 static const TypeInfo isa_ipmi_bt_info = { 160 .name = TYPE_ISA_IPMI_BT, 161 .parent = TYPE_ISA_DEVICE, 162 .instance_size = sizeof(ISAIPMIBTDevice), 163 .instance_init = isa_ipmi_bt_init, 164 .class_init = isa_ipmi_bt_class_init, 165 .interfaces = (InterfaceInfo[]) { 166 { TYPE_IPMI_INTERFACE }, 167 { TYPE_ACPI_DEV_AML_IF }, 168 { } 169 } 170 }; 171 172 static void ipmi_register_types(void) 173 { 174 type_register_static(&isa_ipmi_bt_info); 175 } 176 177 type_init(ipmi_register_types) 178