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 30 #define TYPE_PCI_IPMI_BT "pci-ipmi-bt" 31 #define PCI_IPMI_BT(obj) OBJECT_CHECK(PCIIPMIBTDevice, (obj), \ 32 TYPE_PCI_IPMI_BT) 33 34 typedef struct PCIIPMIBTDevice { 35 PCIDevice dev; 36 IPMIBT bt; 37 bool irq_enabled; 38 uint32_t uuid; 39 } PCIIPMIBTDevice; 40 41 static void pci_ipmi_raise_irq(IPMIBT *ik) 42 { 43 PCIIPMIBTDevice *pik = ik->opaque; 44 45 pci_set_irq(&pik->dev, true); 46 } 47 48 static void pci_ipmi_lower_irq(IPMIBT *ik) 49 { 50 PCIIPMIBTDevice *pik = ik->opaque; 51 52 pci_set_irq(&pik->dev, false); 53 } 54 55 static void pci_ipmi_bt_realize(PCIDevice *pd, Error **errp) 56 { 57 PCIIPMIBTDevice *pik = PCI_IPMI_BT(pd); 58 IPMIInterface *ii = IPMI_INTERFACE(pd); 59 IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 60 61 if (!pik->bt.bmc) { 62 error_setg(errp, "IPMI device requires a bmc attribute to be set"); 63 return; 64 } 65 66 pik->uuid = ipmi_next_uuid(); 67 68 pik->bt.bmc->intf = ii; 69 pik->bt.opaque = pik; 70 71 pci_config_set_prog_interface(pd->config, 0x02); /* BT */ 72 pci_config_set_interrupt_pin(pd->config, 0x01); 73 pik->bt.use_irq = 1; 74 pik->bt.raise_irq = pci_ipmi_raise_irq; 75 pik->bt.lower_irq = pci_ipmi_lower_irq; 76 77 iic->init(ii, 8, errp); 78 if (*errp) { 79 return; 80 } 81 pci_register_bar(pd, 0, PCI_BASE_ADDRESS_SPACE_IO, &pik->bt.io); 82 } 83 84 const VMStateDescription vmstate_PCIIPMIBTDevice = { 85 .name = TYPE_IPMI_INTERFACE_PREFIX "pci-bt", 86 .version_id = 1, 87 .minimum_version_id = 1, 88 .fields = (VMStateField[]) { 89 VMSTATE_PCI_DEVICE(dev, PCIIPMIBTDevice), 90 VMSTATE_STRUCT(bt, PCIIPMIBTDevice, 1, vmstate_IPMIBT, IPMIBT), 91 VMSTATE_END_OF_LIST() 92 } 93 }; 94 95 static void pci_ipmi_bt_instance_init(Object *obj) 96 { 97 PCIIPMIBTDevice *pik = PCI_IPMI_BT(obj); 98 99 ipmi_bmc_find_and_link(obj, (Object **) &pik->bt.bmc); 100 } 101 102 static void *pci_ipmi_bt_get_backend_data(IPMIInterface *ii) 103 { 104 PCIIPMIBTDevice *pik = PCI_IPMI_BT(ii); 105 106 return &pik->bt; 107 } 108 109 static void pci_ipmi_bt_class_init(ObjectClass *oc, void *data) 110 { 111 DeviceClass *dc = DEVICE_CLASS(oc); 112 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc); 113 IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc); 114 115 pdc->vendor_id = PCI_VENDOR_ID_QEMU; 116 pdc->device_id = PCI_DEVICE_ID_QEMU_IPMI; 117 pdc->revision = 1; 118 pdc->class_id = PCI_CLASS_SERIAL_IPMI; 119 120 dc->vmsd = &vmstate_PCIIPMIBTDevice; 121 dc->desc = "PCI IPMI BT"; 122 pdc->realize = pci_ipmi_bt_realize; 123 124 iic->get_backend_data = pci_ipmi_bt_get_backend_data; 125 ipmi_bt_class_init(iic); 126 } 127 128 static const TypeInfo pci_ipmi_bt_info = { 129 .name = TYPE_PCI_IPMI_BT, 130 .parent = TYPE_PCI_DEVICE, 131 .instance_size = sizeof(PCIIPMIBTDevice), 132 .instance_init = pci_ipmi_bt_instance_init, 133 .class_init = pci_ipmi_bt_class_init, 134 .interfaces = (InterfaceInfo[]) { 135 { TYPE_IPMI_INTERFACE }, 136 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 137 { } 138 } 139 }; 140 141 static void pci_ipmi_bt_register_types(void) 142 { 143 type_register_static(&pci_ipmi_bt_info); 144 } 145 146 type_init(pci_ipmi_bt_register_types) 147