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/pci/pci.h" 33 34 typedef struct PCISerialState { 35 PCIDevice dev; 36 SerialState state; 37 uint8_t prog_if; 38 } PCISerialState; 39 40 41 static void serial_pci_realize(PCIDevice *dev, Error **errp) 42 { 43 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 44 SerialState *s = &pci->state; 45 Error *err = NULL; 46 47 s->baudbase = 115200; 48 serial_realize_core(s, &err); 49 if (err != NULL) { 50 error_propagate(errp, err); 51 return; 52 } 53 54 pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; 55 pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; 56 s->irq = pci_allocate_irq(&pci->dev); 57 58 memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8); 59 pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io); 60 } 61 62 static void serial_pci_exit(PCIDevice *dev) 63 { 64 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 65 SerialState *s = &pci->state; 66 67 serial_exit_core(s); 68 qemu_free_irq(s->irq); 69 } 70 71 static const VMStateDescription vmstate_pci_serial = { 72 .name = "pci-serial", 73 .version_id = 1, 74 .minimum_version_id = 1, 75 .fields = (VMStateField[]) { 76 VMSTATE_PCI_DEVICE(dev, PCISerialState), 77 VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState), 78 VMSTATE_END_OF_LIST() 79 } 80 }; 81 82 static Property serial_pci_properties[] = { 83 DEFINE_PROP_CHR("chardev", PCISerialState, state.chr), 84 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02), 85 DEFINE_PROP_END_OF_LIST(), 86 }; 87 88 static void serial_pci_class_initfn(ObjectClass *klass, void *data) 89 { 90 DeviceClass *dc = DEVICE_CLASS(klass); 91 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); 92 pc->realize = serial_pci_realize; 93 pc->exit = serial_pci_exit; 94 pc->vendor_id = PCI_VENDOR_ID_REDHAT; 95 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; 96 pc->revision = 1; 97 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; 98 dc->vmsd = &vmstate_pci_serial; 99 dc->props = serial_pci_properties; 100 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 101 } 102 103 static const TypeInfo serial_pci_info = { 104 .name = "pci-serial", 105 .parent = TYPE_PCI_DEVICE, 106 .instance_size = sizeof(PCISerialState), 107 .class_init = serial_pci_class_initfn, 108 .interfaces = (InterfaceInfo[]) { 109 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 110 { }, 111 }, 112 }; 113 114 static void serial_pci_register_types(void) 115 { 116 type_register_static(&serial_pci_info); 117 } 118 119 type_init(serial_pci_register_types) 120