| 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.rst */ |
| 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/core/irq.h" |
| 33 | #include "hw/pci/pci_device.h" |
| 34 | #include "hw/core/qdev-properties.h" |
| 35 | #include "migration/vmstate.h" |
| 36 | #include "qom/object.h" |
| 37 | |
| 38 | struct PCISerialState { |
| 39 | PCIDevice dev; |
| 40 | SerialState state; |
| 41 | }; |
| 42 | |
| 43 | #define TYPE_PCI_SERIAL "pci-serial" |
| 44 | OBJECT_DECLARE_SIMPLE_TYPE(PCISerialState, 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 | |
| 51 | if (!qdev_realize(DEVICE(s), NULL, errp)) { |
| 52 | return; |
| 53 | } |
| 54 | |
| 55 | pci->dev.config[PCI_CLASS_PROG] = 2; /* 16550 compatible */ |
| 56 | pci->dev.config[PCI_INTERRUPT_PIN] = 1; |
| 57 | s->irq = pci_allocate_irq(&pci->dev); |
| 58 | |
| 59 | memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8); |
| 60 | pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io); |
| 61 | } |
| 62 | |
| 63 | static void serial_pci_exit(PCIDevice *dev) |
| 64 | { |
| 65 | PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev); |
| 66 | SerialState *s = &pci->state; |
| 67 | |
| 68 | qdev_unrealize(DEVICE(s)); |
| 69 | qemu_free_irq(s->irq); |
| 70 | } |
| 71 | |
| 72 | static const VMStateDescription vmstate_pci_serial = { |
| 73 | .name = "pci-serial", |
| 74 | .version_id = 1, |
| 75 | .minimum_version_id = 1, |
| 76 | .fields = (const VMStateField[]) { |
| 77 | VMSTATE_PCI_DEVICE(dev, PCISerialState), |
| 78 | VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState), |
| 79 | VMSTATE_END_OF_LIST() |
| 80 | } |
| 81 | }; |
| 82 | |
| 83 | static void serial_pci_class_initfn(ObjectClass *klass, const void *data) |
| 84 | { |
| 85 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 86 | PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass); |
| 87 | pc->realize = serial_pci_realize; |
| 88 | pc->exit = serial_pci_exit; |
| 89 | pc->vendor_id = PCI_VENDOR_ID_REDHAT; |
| 90 | pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL; |
| 91 | pc->revision = 1; |
| 92 | pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL; |
| 93 | dc->vmsd = &vmstate_pci_serial; |
| 94 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
| 95 | } |
| 96 | |
| 97 | static void serial_pci_init(Object *o) |
| 98 | { |
| 99 | PCISerialState *ps = PCI_SERIAL(o); |
| 100 | |
| 101 | object_initialize_child(o, "serial", &ps->state, TYPE_SERIAL); |
| 102 | |
| 103 | qdev_alias_all_properties(DEVICE(&ps->state), o); |
| 104 | } |
| 105 | |
| 106 | static const TypeInfo serial_pci_info = { |
| 107 | .name = TYPE_PCI_SERIAL, |
| 108 | .parent = TYPE_PCI_DEVICE, |
| 109 | .instance_size = sizeof(PCISerialState), |
| 110 | .instance_init = serial_pci_init, |
| 111 | .class_init = serial_pci_class_initfn, |
| 112 | .interfaces = (const InterfaceInfo[]) { |
| 113 | { INTERFACE_CONVENTIONAL_PCI_DEVICE }, |
| 114 | { }, |
| 115 | }, |
| 116 | }; |
| 117 | |
| 118 | static void serial_pci_register_types(void) |
| 119 | { |
| 120 | type_register_static(&serial_pci_info); |
| 121 | } |
| 122 | |
| 123 | type_init(serial_pci_register_types) |