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 "hw/char/serial.h" 31 #include "hw/pci/pci.h" 32 33 typedef struct PCISerialState { 34 PCIDevice dev; 35 SerialState state; 36 uint8_t prog_if; 37 } PCISerialState; 38 39 40 static void serial_pci_realize(PCIDevice *dev, Error **errp) 41 { 42 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 43 SerialState *s = &pci->state; 44 Error *err = NULL; 45 46 s->baudbase = 115200; 47 serial_realize_core(s, &err); 48 if (err != NULL) { 49 error_propagate(errp, err); 50 return; 51 } 52 53 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; 54 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; 55 s->irq = pci_allocate_irq(&pci->dev); 56 57 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8); 58 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io); 59 } 60 61 static void serial_pci_exit(PCIDevice *dev) 62 { 63 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 64 SerialState *s = &pci->state; 65 66 serial_exit_core(s); 67 qemu_free_irq(s->irq); 68 } 69 70 static const VMStateDescription vmstate_pci_serial = { 71 .name = "pci-serial", 72 .version_id = 1, 73 .minimum_version_id = 1, 74 .fields = (VMStateField[]) { 75 VMSTATE_PCI_DEVICE(dev, PCISerialState), 76 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState), 77 VMSTATE_END_OF_LIST() 78 } 79 }; 80 81 static Property serial_pci_properties[] = { 82 DEFINE_PROP_CHR("chardev", PCISerialState, state.chr), 83 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02), 84 DEFINE_PROP_END_OF_LIST(), 85 }; 86 87 static void serial_pci_class_initfn(ObjectClass *klass, void *data) 88 { 89 DeviceClass *dc = DEVICE_CLASS(klass); 90 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); 91 pc->realize = serial_pci_realize; 92 pc->exit = serial_pci_exit; 93 pc->vendor_id = PCI_VENDOR_ID_REDHAT; 94 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; 95 pc->revision = 1; 96 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; 97 dc->vmsd = &vmstate_pci_serial; 98 dc->props = serial_pci_properties; 99 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 100 } 101 102 static const TypeInfo serial_pci_info = { 103 .name = "pci-serial", 104 .parent = TYPE_PCI_DEVICE, 105 .instance_size = sizeof(PCISerialState), 106 .class_init = serial_pci_class_initfn, 107 .interfaces = (InterfaceInfo[]) { 108 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 109 { }, 110 }, 111 }; 112 113 static void serial_pci_register_types(void) 114 { 115 type_register_static(&serial_pci_info); 116 } 117 118 type_init(serial_pci_register_types) 119