diff options
Diffstat (limited to 'qemu/hw/char/serial-isa.c')
| -rw-r--r-- | qemu/hw/char/serial-isa.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/qemu/hw/char/serial-isa.c b/qemu/hw/char/serial-isa.c new file mode 100644 index 000000000..f3db024d0 --- /dev/null +++ b/qemu/hw/char/serial-isa.c @@ -0,0 +1,145 @@ +/* + * QEMU 16550A UART emulation + * + * Copyright (c) 2003-2004 Fabrice Bellard + * Copyright (c) 2008 Citrix Systems, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "hw/char/serial.h" +#include "hw/isa/isa.h" + +#define ISA_SERIAL(obj) OBJECT_CHECK(ISASerialState, (obj), TYPE_ISA_SERIAL) + +typedef struct ISASerialState { + ISADevice parent_obj; + + uint32_t index; + uint32_t iobase; + uint32_t isairq; + SerialState state; +} ISASerialState; + +static const int isa_serial_io[MAX_SERIAL_PORTS] = { + 0x3f8, 0x2f8, 0x3e8, 0x2e8 +}; +static const int isa_serial_irq[MAX_SERIAL_PORTS] = { + 4, 3, 4, 3 +}; + +static void serial_isa_realizefn(DeviceState *dev, Error **errp) +{ + static int index; + ISADevice *isadev = ISA_DEVICE(dev); + ISASerialState *isa = ISA_SERIAL(dev); + SerialState *s = &isa->state; + + if (isa->index == -1) { + isa->index = index; + } + if (isa->index >= MAX_SERIAL_PORTS) { + error_setg(errp, "Max. supported number of ISA serial ports is %d.", + MAX_SERIAL_PORTS); + return; + } + if (isa->iobase == -1) { + isa->iobase = isa_serial_io[isa->index]; + } + if (isa->isairq == -1) { + isa->isairq = isa_serial_irq[isa->index]; + } + index++; + + s->baudbase = 115200; + isa_init_irq(isadev, &s->irq, isa->isairq); + serial_realize_core(s, errp); + qdev_set_legacy_instance_id(dev, isa->iobase, 3); + + memory_region_init_io(&s->io, OBJECT(isa), &serial_io_ops, s, "serial", 8); + isa_register_ioport(isadev, &s->io, isa->iobase); +} + +static const VMStateDescription vmstate_isa_serial = { + .name = "serial", + .version_id = 3, + .minimum_version_id = 2, + .fields = (VMStateField[]) { + VMSTATE_STRUCT(state, ISASerialState, 0, vmstate_serial, SerialState), + VMSTATE_END_OF_LIST() + } +}; + +static Property serial_isa_properties[] = { + DEFINE_PROP_UINT32("index", ISASerialState, index, -1), + DEFINE_PROP_UINT32("iobase", ISASerialState, iobase, -1), + DEFINE_PROP_UINT32("irq", ISASerialState, isairq, -1), + DEFINE_PROP_CHR("chardev", ISASerialState, state.chr), + DEFINE_PROP_UINT32("wakeup", ISASerialState, state.wakeup, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void serial_isa_class_initfn(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + dc->realize = serial_isa_realizefn; + dc->vmsd = &vmstate_isa_serial; + dc->props = serial_isa_properties; + set_bit(DEVICE_CATEGORY_INPUT, dc->categories); +} + +static const TypeInfo serial_isa_info = { + .name = TYPE_ISA_SERIAL, + .parent = TYPE_ISA_DEVICE, + .instance_size = sizeof(ISASerialState), + .class_init = serial_isa_class_initfn, +}; + +static void serial_register_types(void) +{ + type_register_static(&serial_isa_info); +} + +type_init(serial_register_types) + +static void serial_isa_init(ISABus *bus, int index, CharDriverState *chr) +{ + DeviceState *dev; + ISADevice *isadev; + + isadev = isa_create(bus, TYPE_ISA_SERIAL); + dev = DEVICE(isadev); + qdev_prop_set_uint32(dev, "index", index); + qdev_prop_set_chr(dev, "chardev", chr); + qdev_init_nofail(dev); +} + +void serial_hds_isa_init(ISABus *bus, int n) +{ + int i; + + assert(n <= MAX_SERIAL_PORTS); + + for (i = 0; i < n; ++i) { + if (serial_hds[i]) { + serial_isa_init(bus, i, serial_hds[i]); + } + } +} |