3669b594d8
Convert pci-serial.txt to reStructuredText. This includes
some wordsmithing, and the correction of the docs to note
that the Windows inf file includes 2x and 4x support
(as it has done since commit dc9528fdf9 in 2014).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230420160334.1048224-3-peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
131 lines
4.0 KiB
C
131 lines
4.0 KiB
C
/*
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* QEMU 16550A UART emulation
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*
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* Copyright (c) 2003-2004 Fabrice Bellard
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* Copyright (c) 2008 Citrix Systems, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/* see docs/specs/pci-serial.rst */
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "qemu/module.h"
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#include "hw/char/serial.h"
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#include "hw/irq.h"
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#include "hw/pci/pci_device.h"
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#include "hw/qdev-properties.h"
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#include "migration/vmstate.h"
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#include "qom/object.h"
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struct PCISerialState {
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PCIDevice dev;
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SerialState state;
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uint8_t prog_if;
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};
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#define TYPE_PCI_SERIAL "pci-serial"
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OBJECT_DECLARE_SIMPLE_TYPE(PCISerialState, PCI_SERIAL)
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static void serial_pci_realize(PCIDevice *dev, Error **errp)
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{
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PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
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SerialState *s = &pci->state;
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if (!qdev_realize(DEVICE(s), NULL, errp)) {
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return;
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}
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pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
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pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
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s->irq = pci_allocate_irq(&pci->dev);
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memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, "serial", 8);
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pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io);
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}
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static void serial_pci_exit(PCIDevice *dev)
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{
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PCISerialState *pci = DO_UPCAST(PCISerialState, dev, dev);
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SerialState *s = &pci->state;
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qdev_unrealize(DEVICE(s));
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qemu_free_irq(s->irq);
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}
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static const VMStateDescription vmstate_pci_serial = {
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.name = "pci-serial",
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.version_id = 1,
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.minimum_version_id = 1,
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.fields = (VMStateField[]) {
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VMSTATE_PCI_DEVICE(dev, PCISerialState),
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VMSTATE_STRUCT(state, PCISerialState, 0, vmstate_serial, SerialState),
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VMSTATE_END_OF_LIST()
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}
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};
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static Property serial_pci_properties[] = {
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DEFINE_PROP_UINT8("prog_if", PCISerialState, prog_if, 0x02),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void serial_pci_class_initfn(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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PCIDeviceClass *pc = PCI_DEVICE_CLASS(klass);
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pc->realize = serial_pci_realize;
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pc->exit = serial_pci_exit;
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pc->vendor_id = PCI_VENDOR_ID_REDHAT;
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pc->device_id = PCI_DEVICE_ID_REDHAT_SERIAL;
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pc->revision = 1;
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pc->class_id = PCI_CLASS_COMMUNICATION_SERIAL;
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dc->vmsd = &vmstate_pci_serial;
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device_class_set_props(dc, serial_pci_properties);
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set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
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}
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static void serial_pci_init(Object *o)
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{
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PCISerialState *ps = PCI_SERIAL(o);
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object_initialize_child(o, "serial", &ps->state, TYPE_SERIAL);
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qdev_alias_all_properties(DEVICE(&ps->state), o);
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}
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static const TypeInfo serial_pci_info = {
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.name = TYPE_PCI_SERIAL,
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.parent = TYPE_PCI_DEVICE,
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.instance_size = sizeof(PCISerialState),
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.instance_init = serial_pci_init,
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.class_init = serial_pci_class_initfn,
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.interfaces = (InterfaceInfo[]) {
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{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
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{ },
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},
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};
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static void serial_pci_register_types(void)
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{
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type_register_static(&serial_pci_info);
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}
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type_init(serial_pci_register_types)
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