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