1 /* 2 * QEMU PCI IPMI KCS 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_kcs.h" 28 #include "hw/pci/pci.h" 29 #include "qom/object.h" 30 31 #define TYPE_PCI_IPMI_KCS "pci-ipmi-kcs" 32 OBJECT_DECLARE_SIMPLE_TYPE(PCIIPMIKCSDevice, PCI_IPMI_KCS) 33 34 struct PCIIPMIKCSDevice { 35 PCIDevice dev; 36 IPMIKCS kcs; 37 bool irq_enabled; 38 uint32_t uuid; 39 }; 40 41 static void pci_ipmi_raise_irq(IPMIKCS *ik) 42 { 43 PCIIPMIKCSDevice *pik = ik->opaque; 44 45 pci_set_irq(&pik->dev, true); 46 } 47 48 static void pci_ipmi_lower_irq(IPMIKCS *ik) 49 { 50 PCIIPMIKCSDevice *pik = ik->opaque; 51 52 pci_set_irq(&pik->dev, false); 53 } 54 55 static void pci_ipmi_kcs_realize(PCIDevice *pd, Error **errp) 56 { 57 Error *err = NULL; 58 PCIIPMIKCSDevice *pik = PCI_IPMI_KCS(pd); 59 IPMIInterface *ii = IPMI_INTERFACE(pd); 60 IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); 61 62 if (!pik->kcs.bmc) { 63 error_setg(errp, "IPMI device requires a bmc attribute to be set"); 64 return; 65 } 66 67 pik->uuid = ipmi_next_uuid(); 68 69 pik->kcs.bmc->intf = ii; 70 pik->kcs.opaque = pik; 71 72 pci_config_set_prog_interface(pd->config, 0x01); /* KCS */ 73 pci_config_set_interrupt_pin(pd->config, 0x01); 74 pik->kcs.use_irq = 1; 75 pik->kcs.raise_irq = pci_ipmi_raise_irq; 76 pik->kcs.lower_irq = pci_ipmi_lower_irq; 77 78 iic->init(ii, 8, &err); 79 if (err) { 80 error_propagate(errp, err); 81 return; 82 } 83 pci_register_bar(pd, 0, PCI_BASE_ADDRESS_SPACE_IO, &pik->kcs.io); 84 } 85 86 const VMStateDescription vmstate_PCIIPMIKCSDevice = { 87 .name = TYPE_IPMI_INTERFACE_PREFIX "pci-kcs", 88 .version_id = 1, 89 .minimum_version_id = 1, 90 .fields = (VMStateField[]) { 91 VMSTATE_PCI_DEVICE(dev, PCIIPMIKCSDevice), 92 VMSTATE_STRUCT(kcs, PCIIPMIKCSDevice, 1, vmstate_IPMIKCS, IPMIKCS), 93 VMSTATE_END_OF_LIST() 94 } 95 }; 96 97 static void pci_ipmi_kcs_instance_init(Object *obj) 98 { 99 PCIIPMIKCSDevice *pik = PCI_IPMI_KCS(obj); 100 101 ipmi_bmc_find_and_link(obj, (Object **) &pik->kcs.bmc); 102 } 103 104 static void *pci_ipmi_kcs_get_backend_data(IPMIInterface *ii) 105 { 106 PCIIPMIKCSDevice *pik = PCI_IPMI_KCS(ii); 107 108 return &pik->kcs; 109 } 110 111 static void pci_ipmi_kcs_class_init(ObjectClass *oc, void *data) 112 { 113 DeviceClass *dc = DEVICE_CLASS(oc); 114 PCIDeviceClass *pdc = PCI_DEVICE_CLASS(oc); 115 IPMIInterfaceClass *iic = IPMI_INTERFACE_CLASS(oc); 116 117 pdc->vendor_id = PCI_VENDOR_ID_QEMU; 118 pdc->device_id = PCI_DEVICE_ID_QEMU_IPMI; 119 pdc->revision = 1; 120 pdc->class_id = PCI_CLASS_SERIAL_IPMI; 121 122 dc->vmsd = &vmstate_PCIIPMIKCSDevice; 123 dc->desc = "PCI IPMI KCS"; 124 pdc->realize = pci_ipmi_kcs_realize; 125 126 iic->get_backend_data = pci_ipmi_kcs_get_backend_data; 127 ipmi_kcs_class_init(iic); 128 } 129 130 static const TypeInfo pci_ipmi_kcs_info = { 131 .name = TYPE_PCI_IPMI_KCS, 132 .parent = TYPE_PCI_DEVICE, 133 .instance_size = sizeof(PCIIPMIKCSDevice), 134 .instance_init = pci_ipmi_kcs_instance_init, 135 .class_init = pci_ipmi_kcs_class_init, 136 .interfaces = (InterfaceInfo[]) { 137 { TYPE_IPMI_INTERFACE }, 138 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 139 { } 140 } 141 }; 142 143 static void pci_ipmi_kcs_register_types(void) 144 { 145 type_register_static(&pci_ipmi_kcs_info); 146 } 147 148 type_init(pci_ipmi_kcs_register_types) 149