root / hw / char / serial-isa.c @ f53f81e0
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1 | 488cb996 | Gerd Hoffmann | /*
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2 | 488cb996 | Gerd Hoffmann | * QEMU 16550A UART emulation
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3 | 488cb996 | Gerd Hoffmann | *
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4 | 488cb996 | Gerd Hoffmann | * Copyright (c) 2003-2004 Fabrice Bellard
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5 | 488cb996 | Gerd Hoffmann | * Copyright (c) 2008 Citrix Systems, Inc.
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6 | 488cb996 | Gerd Hoffmann | *
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7 | 488cb996 | Gerd Hoffmann | * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 | 488cb996 | Gerd Hoffmann | * of this software and associated documentation files (the "Software"), to deal
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9 | 488cb996 | Gerd Hoffmann | * in the Software without restriction, including without limitation the rights
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10 | 488cb996 | Gerd Hoffmann | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 | 488cb996 | Gerd Hoffmann | * copies of the Software, and to permit persons to whom the Software is
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12 | 488cb996 | Gerd Hoffmann | * furnished to do so, subject to the following conditions:
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13 | 488cb996 | Gerd Hoffmann | *
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14 | 488cb996 | Gerd Hoffmann | * The above copyright notice and this permission notice shall be included in
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15 | 488cb996 | Gerd Hoffmann | * all copies or substantial portions of the Software.
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16 | 488cb996 | Gerd Hoffmann | *
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17 | 488cb996 | Gerd Hoffmann | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 | 488cb996 | Gerd Hoffmann | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 | 488cb996 | Gerd Hoffmann | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 | 488cb996 | Gerd Hoffmann | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 | 488cb996 | Gerd Hoffmann | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 | 488cb996 | Gerd Hoffmann | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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23 | 488cb996 | Gerd Hoffmann | * THE SOFTWARE.
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24 | 488cb996 | Gerd Hoffmann | */
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25 | 488cb996 | Gerd Hoffmann | |
26 | 0d09e41a | Paolo Bonzini | #include "hw/char/serial.h" |
27 | 0d09e41a | Paolo Bonzini | #include "hw/isa/isa.h" |
28 | 488cb996 | Gerd Hoffmann | |
29 | eeceb084 | Andreas Färber | #define ISA_SERIAL(obj) OBJECT_CHECK(ISASerialState, (obj), TYPE_ISA_SERIAL)
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30 | eeceb084 | Andreas Färber | |
31 | 488cb996 | Gerd Hoffmann | typedef struct ISASerialState { |
32 | eeceb084 | Andreas Färber | ISADevice parent_obj; |
33 | eeceb084 | Andreas Färber | |
34 | 488cb996 | Gerd Hoffmann | uint32_t index; |
35 | 488cb996 | Gerd Hoffmann | uint32_t iobase; |
36 | 488cb996 | Gerd Hoffmann | uint32_t isairq; |
37 | 488cb996 | Gerd Hoffmann | SerialState state; |
38 | 488cb996 | Gerd Hoffmann | } ISASerialState; |
39 | 488cb996 | Gerd Hoffmann | |
40 | 488cb996 | Gerd Hoffmann | static const int isa_serial_io[MAX_SERIAL_PORTS] = { |
41 | 488cb996 | Gerd Hoffmann | 0x3f8, 0x2f8, 0x3e8, 0x2e8 |
42 | 488cb996 | Gerd Hoffmann | }; |
43 | 488cb996 | Gerd Hoffmann | static const int isa_serial_irq[MAX_SERIAL_PORTS] = { |
44 | 488cb996 | Gerd Hoffmann | 4, 3, 4, 3 |
45 | 488cb996 | Gerd Hoffmann | }; |
46 | 488cb996 | Gerd Hoffmann | |
47 | db895a1e | Andreas Färber | static void serial_isa_realizefn(DeviceState *dev, Error **errp) |
48 | 488cb996 | Gerd Hoffmann | { |
49 | 488cb996 | Gerd Hoffmann | static int index; |
50 | db895a1e | Andreas Färber | ISADevice *isadev = ISA_DEVICE(dev); |
51 | eeceb084 | Andreas Färber | ISASerialState *isa = ISA_SERIAL(dev); |
52 | 488cb996 | Gerd Hoffmann | SerialState *s = &isa->state; |
53 | 488cb996 | Gerd Hoffmann | |
54 | 488cb996 | Gerd Hoffmann | if (isa->index == -1) { |
55 | 488cb996 | Gerd Hoffmann | isa->index = index; |
56 | 488cb996 | Gerd Hoffmann | } |
57 | 488cb996 | Gerd Hoffmann | if (isa->index >= MAX_SERIAL_PORTS) {
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58 | db895a1e | Andreas Färber | error_setg(errp, "Max. supported number of ISA serial ports is %d.",
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59 | db895a1e | Andreas Färber | MAX_SERIAL_PORTS); |
60 | db895a1e | Andreas Färber | return;
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61 | 488cb996 | Gerd Hoffmann | } |
62 | 488cb996 | Gerd Hoffmann | if (isa->iobase == -1) { |
63 | 488cb996 | Gerd Hoffmann | isa->iobase = isa_serial_io[isa->index]; |
64 | 488cb996 | Gerd Hoffmann | } |
65 | 488cb996 | Gerd Hoffmann | if (isa->isairq == -1) { |
66 | 488cb996 | Gerd Hoffmann | isa->isairq = isa_serial_irq[isa->index]; |
67 | 488cb996 | Gerd Hoffmann | } |
68 | 488cb996 | Gerd Hoffmann | index++; |
69 | 488cb996 | Gerd Hoffmann | |
70 | 488cb996 | Gerd Hoffmann | s->baudbase = 115200;
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71 | db895a1e | Andreas Färber | isa_init_irq(isadev, &s->irq, isa->isairq); |
72 | db895a1e | Andreas Färber | serial_realize_core(s, errp); |
73 | db895a1e | Andreas Färber | qdev_set_legacy_instance_id(dev, isa->iobase, 3);
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74 | 488cb996 | Gerd Hoffmann | |
75 | 300b1fc6 | Paolo Bonzini | memory_region_init_io(&s->io, OBJECT(isa), &serial_io_ops, s, "serial", 8); |
76 | db895a1e | Andreas Färber | isa_register_ioport(isadev, &s->io, isa->iobase); |
77 | 488cb996 | Gerd Hoffmann | } |
78 | 488cb996 | Gerd Hoffmann | |
79 | 488cb996 | Gerd Hoffmann | static const VMStateDescription vmstate_isa_serial = { |
80 | 488cb996 | Gerd Hoffmann | .name = "serial",
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81 | 488cb996 | Gerd Hoffmann | .version_id = 3,
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82 | 488cb996 | Gerd Hoffmann | .minimum_version_id = 2,
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83 | 488cb996 | Gerd Hoffmann | .fields = (VMStateField[]) { |
84 | 488cb996 | Gerd Hoffmann | VMSTATE_STRUCT(state, ISASerialState, 0, vmstate_serial, SerialState),
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85 | 488cb996 | Gerd Hoffmann | VMSTATE_END_OF_LIST() |
86 | 488cb996 | Gerd Hoffmann | } |
87 | 488cb996 | Gerd Hoffmann | }; |
88 | 488cb996 | Gerd Hoffmann | |
89 | 488cb996 | Gerd Hoffmann | static Property serial_isa_properties[] = {
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90 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_UINT32("index", ISASerialState, index, -1), |
91 | c7bcc85d | Paolo Bonzini | DEFINE_PROP_UINT32("iobase", ISASerialState, iobase, -1), |
92 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_UINT32("irq", ISASerialState, isairq, -1), |
93 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_CHR("chardev", ISASerialState, state.chr),
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94 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_UINT32("wakeup", ISASerialState, state.wakeup, 0), |
95 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_END_OF_LIST(), |
96 | 488cb996 | Gerd Hoffmann | }; |
97 | 488cb996 | Gerd Hoffmann | |
98 | 488cb996 | Gerd Hoffmann | static void serial_isa_class_initfn(ObjectClass *klass, void *data) |
99 | 488cb996 | Gerd Hoffmann | { |
100 | 488cb996 | Gerd Hoffmann | DeviceClass *dc = DEVICE_CLASS(klass); |
101 | db895a1e | Andreas Färber | |
102 | db895a1e | Andreas Färber | dc->realize = serial_isa_realizefn; |
103 | 488cb996 | Gerd Hoffmann | dc->vmsd = &vmstate_isa_serial; |
104 | 488cb996 | Gerd Hoffmann | dc->props = serial_isa_properties; |
105 | 125ee0ed | Marcel Apfelbaum | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
106 | 488cb996 | Gerd Hoffmann | } |
107 | 488cb996 | Gerd Hoffmann | |
108 | 8c43a6f0 | Andreas Färber | static const TypeInfo serial_isa_info = { |
109 | eeceb084 | Andreas Färber | .name = TYPE_ISA_SERIAL, |
110 | 488cb996 | Gerd Hoffmann | .parent = TYPE_ISA_DEVICE, |
111 | 488cb996 | Gerd Hoffmann | .instance_size = sizeof(ISASerialState),
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112 | 488cb996 | Gerd Hoffmann | .class_init = serial_isa_class_initfn, |
113 | 488cb996 | Gerd Hoffmann | }; |
114 | 488cb996 | Gerd Hoffmann | |
115 | 488cb996 | Gerd Hoffmann | static void serial_register_types(void) |
116 | 488cb996 | Gerd Hoffmann | { |
117 | 488cb996 | Gerd Hoffmann | type_register_static(&serial_isa_info); |
118 | 488cb996 | Gerd Hoffmann | } |
119 | 488cb996 | Gerd Hoffmann | |
120 | 488cb996 | Gerd Hoffmann | type_init(serial_register_types) |
121 | 488cb996 | Gerd Hoffmann | |
122 | 488cb996 | Gerd Hoffmann | bool serial_isa_init(ISABus *bus, int index, CharDriverState *chr) |
123 | 488cb996 | Gerd Hoffmann | { |
124 | 4a17cc4f | Andreas Färber | DeviceState *dev; |
125 | 4a17cc4f | Andreas Färber | ISADevice *isadev; |
126 | 488cb996 | Gerd Hoffmann | |
127 | 4a17cc4f | Andreas Färber | isadev = isa_try_create(bus, TYPE_ISA_SERIAL); |
128 | 4a17cc4f | Andreas Färber | if (!isadev) {
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129 | 488cb996 | Gerd Hoffmann | return false; |
130 | 488cb996 | Gerd Hoffmann | } |
131 | 4a17cc4f | Andreas Färber | dev = DEVICE(isadev); |
132 | 4a17cc4f | Andreas Färber | qdev_prop_set_uint32(dev, "index", index);
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133 | 4a17cc4f | Andreas Färber | qdev_prop_set_chr(dev, "chardev", chr);
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134 | 4a17cc4f | Andreas Färber | if (qdev_init(dev) < 0) { |
135 | 488cb996 | Gerd Hoffmann | return false; |
136 | 488cb996 | Gerd Hoffmann | } |
137 | 488cb996 | Gerd Hoffmann | return true; |
138 | 488cb996 | Gerd Hoffmann | } |