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.txt */ 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.h" 34 #include "hw/qdev-properties.h" 35 #include "migration/vmstate.h" 36 37 typedef struct PCISerialState { 38 PCIDevice dev; 39 SerialState state; 40 uint8_t prog_if; 41 } PCISerialState; 42 43 #define TYPE_PCI_SERIAL "pci-serial" 44 #define PCI_SERIAL(s) OBJECT_CHECK(PCISerialState, (s), TYPE_PCI_SERIAL) 45 46 static void serial_pci_realize(PCIDevice *dev, Error **errp) 47 { 48 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 49 SerialState *s = &pci->state; 50 Error *err = NULL; 51 52 s->baudbase = 115200; 53 serial_realize_core(s, &err); 54 if (err != NULL) { 55 error_propagate(errp, err); 56 return; 57 } 58 59 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; 60 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; 61 s->irq = pci_allocate_irq(&pci->dev); 62 63 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8); 64 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io); 65 } 66 67 static void serial_pci_exit(PCIDevice *dev) 68 { 69 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 70 SerialState *s = &pci->state; 71 72 serial_exit_core(s); 73 qemu_free_irq(s->irq); 74 } 75 76 static const VMStateDescription vmstate_pci_serial = { 77 .name = "pci-serial", 78 .version_id = 1, 79 .minimum_version_id = 1, 80 .fields = (VMStateField[]) { 81 VMSTATE_PCI_DEVICE(dev, PCISerialState), 82 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState), 83 VMSTATE_END_OF_LIST() 84 } 85 }; 86 87 static Property serial_pci_properties[] = { 88 DEFINE_PROP_CHR("chardev", PCISerialState, state.chr), 89 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02), 90 DEFINE_PROP_END_OF_LIST(), 91 }; 92 93 static void serial_pci_class_initfn(ObjectClass *klass, void *data) 94 { 95 DeviceClass *dc = DEVICE_CLASS(klass); 96 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); 97 pc->realize = serial_pci_realize; 98 pc->exit = serial_pci_exit; 99 pc->vendor_id = PCI_VENDOR_ID_REDHAT; 100 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; 101 pc->revision = 1; 102 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; 103 dc->vmsd = &vmstate_pci_serial; 104 dc->props = serial_pci_properties; 105 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 106 } 107 108 static void serial_pci_init(Object *o) 109 { 110 PCISerialState *ps = PCI_SERIAL(o); 111 112 object_initialize_child(o, "serial", &ps->state, sizeof(ps->state), 113 TYPE_SERIAL, &error_abort, NULL); 114 } 115 116 static const TypeInfo serial_pci_info = { 117 .name = TYPE_PCI_SERIAL, 118 .parent = TYPE_PCI_DEVICE, 119 .instance_size = sizeof(PCISerialState), 120 .instance_init = serial_pci_init, 121 .class_init = serial_pci_class_initfn, 122 .interfaces = (InterfaceInfo[]) { 123 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 124 { }, 125 }, 126 }; 127 128 static void serial_pci_register_types(void) 129 { 130 type_register_static(&serial_pci_info); 131 } 132 133 type_init(serial_pci_register_types) 134