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 "migration/vmstate.h" 35 36 typedef struct PCISerialState { 37 PCIDevice dev; 38 SerialState state; 39 uint8_t prog_if; 40 } PCISerialState; 41 42 43 static void serial_pci_realize(PCIDevice *dev, Error **errp) 44 { 45 PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); 46 SerialState *s = &pci->state; 47 Error *err = NULL; 48 49 s->baudbase = 115200; 50 serial_realize_core(s, &err); 51 if (err != NULL) { 52 error_propagate(errp, err); 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 serial_exit_core(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 = (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_CHR("chardev", PCISerialState, state.chr), 86 DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02), 87 DEFINE_PROP_END_OF_LIST(), 88 }; 89 90 static void serial_pci_class_initfn(ObjectClass *klass, void *data) 91 { 92 DeviceClass *dc = DEVICE_CLASS(klass); 93 PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); 94 pc->realize = serial_pci_realize; 95 pc->exit = serial_pci_exit; 96 pc->vendor_id = PCI_VENDOR_ID_REDHAT; 97 pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; 98 pc->revision = 1; 99 pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; 100 dc->vmsd = &vmstate_pci_serial; 101 dc->props = serial_pci_properties; 102 set_bit(DEVICE_CATEGORY_INPUT, dc->categories); 103 } 104 105 static const TypeInfo serial_pci_info = { 106 .name = "pci-serial", 107 .parent = TYPE_PCI_DEVICE, 108 .instance_size = sizeof(PCISerialState), 109 .class_init = serial_pci_class_initfn, 110 .interfaces = (InterfaceInfo[]) { 111 { INTERFACE_CONVENTIONAL_PCI_DEVICE }, 112 { }, 113 }, 114 }; 115 116 static void serial_pci_register_types(void) 117 { 118 type_register_static(&serial_pci_info); 119 } 120 121 type_init(serial_pci_register_types) 122