1 /* 2 * QEMU 16550A UART emulation 3 * 4 * Copyright (c) 2003-2004 Fabrice Bellard 5 * Copyright (c) 2008 Citrix Systems, Inc. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 26 /* see docs/specs/pci-serial.rst */ 27 28 #include "qemu/osdep.h" 29 #include "qapi/error.h" 30 #include "qemu/module.h" 31 #include "hw/char/serial.h" 32 #include "hw/irq.h" 33 #include "hw/pci/pci_device.h" 34 #include "hw/qdev-properties.h" 35 #include "migration/vmstate.h" 36 #include "qom/object.h" 37 38 struct PCISerialState { 39 PCIDevice dev; 40 SerialState state; 41 uint8_t prog_if; 42 }; 43 44 #define TYPE_PCI_SERIAL "pci-serial" 45 OBJECT_DECLARE_SIMPLE_TYPE(PCISerialState, PCI_SERIAL) 46 47 static void serial_pci_realize(PCIDevice *dev, Error **errp) 48 { 49 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 50 SerialState *s = &pci->state; 51 52 if (!qdev_realize(DEVICE(s), NULL, errp)) { 53 return; 54 } 55 56 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; 57 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; 58 s->irq = pci_allocate_irq(&pci->dev); 59 60 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8); 61 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io); 62 } 63 64 static void serial_pci_exit(PCIDevice *dev) 65 { 66 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 67 SerialState *s = &pci->state; 68 69 qdev_unrealize(DEVICE(s)); 70 qemu_free_irq(s->irq); 71 } 72 73 static const VMStateDescription vmstate_pci_serial = { 74 .name = "pci-serial", 75 .version_id = 1, 76 .minimum_version_id = 1, 77 .fields = (const VMStateField[]) { 78 VMSTATE_PCI_DEVICE(dev, PCISerialState), 79 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState), 80 VMSTATE_END_OF_LIST() 81 } 82 }; 83 84 static Property serial_pci_properties[] = { 85 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02), 86 DEFINE_PROP_END_OF_LIST(), 87 }; 88 89 static void serial_pci_class_initfn(ObjectClass *klass, void *data) 90 { 91 DeviceClass *dc = DEVICE_CLASS(klass); 92 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); 93 pc->realize = serial_pci_realize; 94 pc->exit = serial_pci_exit; 95 pc->vendor_id = PCI_VENDOR_ID_REDHAT; 96 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; 97 pc->revision = 1; 98 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; 99 dc->vmsd = &vmstate_pci_serial; 100 device_class_set_props(dc, serial_pci_properties); 101 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 102 } 103 104 static void serial_pci_init(Object *o) 105 { 106 PCISerialState *ps = PCI_SERIAL(o); 107 108 object_initialize_child(o, "serial", &ps->state, TYPE_SERIAL); 109 110 qdev_alias_all_properties(DEVICE(&ps->state), o); 111 } 112 113 static const TypeInfo serial_pci_info = { 114 .name = TYPE_PCI_SERIAL, 115 .parent = TYPE_PCI_DEVICE, 116 .instance_size = sizeof(PCISerialState), 117 .instance_init = serial_pci_init, 118 .class_init = serial_pci_class_initfn, 119 .interfaces = (InterfaceInfo[]) { 120 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 121 { }, 122 }, 123 }; 124 125 static void serial_pci_register_types(void) 126 { 127 type_register_static(&serial_pci_info); 128 } 129 130 type_init(serial_pci_register_types) 131