root / hw / serial-isa.c @ a1bc20df
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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 | 488cb996 | Gerd Hoffmann | #include "serial.h" |
27 | 488cb996 | Gerd Hoffmann | #include "isa.h" |
28 | 488cb996 | Gerd Hoffmann | |
29 | 488cb996 | Gerd Hoffmann | typedef struct ISASerialState { |
30 | 488cb996 | Gerd Hoffmann | ISADevice dev; |
31 | 488cb996 | Gerd Hoffmann | uint32_t index; |
32 | 488cb996 | Gerd Hoffmann | uint32_t iobase; |
33 | 488cb996 | Gerd Hoffmann | uint32_t isairq; |
34 | 488cb996 | Gerd Hoffmann | SerialState state; |
35 | 488cb996 | Gerd Hoffmann | } ISASerialState; |
36 | 488cb996 | Gerd Hoffmann | |
37 | 488cb996 | Gerd Hoffmann | static const int isa_serial_io[MAX_SERIAL_PORTS] = { |
38 | 488cb996 | Gerd Hoffmann | 0x3f8, 0x2f8, 0x3e8, 0x2e8 |
39 | 488cb996 | Gerd Hoffmann | }; |
40 | 488cb996 | Gerd Hoffmann | static const int isa_serial_irq[MAX_SERIAL_PORTS] = { |
41 | 488cb996 | Gerd Hoffmann | 4, 3, 4, 3 |
42 | 488cb996 | Gerd Hoffmann | }; |
43 | 488cb996 | Gerd Hoffmann | |
44 | 488cb996 | Gerd Hoffmann | static int serial_isa_initfn(ISADevice *dev) |
45 | 488cb996 | Gerd Hoffmann | { |
46 | 488cb996 | Gerd Hoffmann | static int index; |
47 | 488cb996 | Gerd Hoffmann | ISASerialState *isa = DO_UPCAST(ISASerialState, dev, dev); |
48 | 488cb996 | Gerd Hoffmann | SerialState *s = &isa->state; |
49 | 488cb996 | Gerd Hoffmann | |
50 | 488cb996 | Gerd Hoffmann | if (isa->index == -1) { |
51 | 488cb996 | Gerd Hoffmann | isa->index = index; |
52 | 488cb996 | Gerd Hoffmann | } |
53 | 488cb996 | Gerd Hoffmann | if (isa->index >= MAX_SERIAL_PORTS) {
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54 | 488cb996 | Gerd Hoffmann | return -1; |
55 | 488cb996 | Gerd Hoffmann | } |
56 | 488cb996 | Gerd Hoffmann | if (isa->iobase == -1) { |
57 | 488cb996 | Gerd Hoffmann | isa->iobase = isa_serial_io[isa->index]; |
58 | 488cb996 | Gerd Hoffmann | } |
59 | 488cb996 | Gerd Hoffmann | if (isa->isairq == -1) { |
60 | 488cb996 | Gerd Hoffmann | isa->isairq = isa_serial_irq[isa->index]; |
61 | 488cb996 | Gerd Hoffmann | } |
62 | 488cb996 | Gerd Hoffmann | index++; |
63 | 488cb996 | Gerd Hoffmann | |
64 | 488cb996 | Gerd Hoffmann | s->baudbase = 115200;
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65 | 488cb996 | Gerd Hoffmann | isa_init_irq(dev, &s->irq, isa->isairq); |
66 | 488cb996 | Gerd Hoffmann | serial_init_core(s); |
67 | 488cb996 | Gerd Hoffmann | qdev_set_legacy_instance_id(&dev->qdev, isa->iobase, 3);
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68 | 488cb996 | Gerd Hoffmann | |
69 | 488cb996 | Gerd Hoffmann | memory_region_init_io(&s->io, &serial_io_ops, s, "serial", 8); |
70 | 488cb996 | Gerd Hoffmann | isa_register_ioport(dev, &s->io, isa->iobase); |
71 | 488cb996 | Gerd Hoffmann | return 0; |
72 | 488cb996 | Gerd Hoffmann | } |
73 | 488cb996 | Gerd Hoffmann | |
74 | 488cb996 | Gerd Hoffmann | static const VMStateDescription vmstate_isa_serial = { |
75 | 488cb996 | Gerd Hoffmann | .name = "serial",
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76 | 488cb996 | Gerd Hoffmann | .version_id = 3,
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77 | 488cb996 | Gerd Hoffmann | .minimum_version_id = 2,
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78 | 488cb996 | Gerd Hoffmann | .fields = (VMStateField[]) { |
79 | 488cb996 | Gerd Hoffmann | VMSTATE_STRUCT(state, ISASerialState, 0, vmstate_serial, SerialState),
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80 | 488cb996 | Gerd Hoffmann | VMSTATE_END_OF_LIST() |
81 | 488cb996 | Gerd Hoffmann | } |
82 | 488cb996 | Gerd Hoffmann | }; |
83 | 488cb996 | Gerd Hoffmann | |
84 | 488cb996 | Gerd Hoffmann | static Property serial_isa_properties[] = {
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85 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_UINT32("index", ISASerialState, index, -1), |
86 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_HEX32("iobase", ISASerialState, iobase, -1), |
87 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_UINT32("irq", ISASerialState, isairq, -1), |
88 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_CHR("chardev", ISASerialState, state.chr),
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89 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_UINT32("wakeup", ISASerialState, state.wakeup, 0), |
90 | 488cb996 | Gerd Hoffmann | DEFINE_PROP_END_OF_LIST(), |
91 | 488cb996 | Gerd Hoffmann | }; |
92 | 488cb996 | Gerd Hoffmann | |
93 | 488cb996 | Gerd Hoffmann | static void serial_isa_class_initfn(ObjectClass *klass, void *data) |
94 | 488cb996 | Gerd Hoffmann | { |
95 | 488cb996 | Gerd Hoffmann | DeviceClass *dc = DEVICE_CLASS(klass); |
96 | 488cb996 | Gerd Hoffmann | ISADeviceClass *ic = ISA_DEVICE_CLASS(klass); |
97 | 488cb996 | Gerd Hoffmann | ic->init = serial_isa_initfn; |
98 | 488cb996 | Gerd Hoffmann | dc->vmsd = &vmstate_isa_serial; |
99 | 488cb996 | Gerd Hoffmann | dc->props = serial_isa_properties; |
100 | 488cb996 | Gerd Hoffmann | } |
101 | 488cb996 | Gerd Hoffmann | |
102 | 488cb996 | Gerd Hoffmann | static TypeInfo serial_isa_info = {
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103 | 488cb996 | Gerd Hoffmann | .name = "isa-serial",
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104 | 488cb996 | Gerd Hoffmann | .parent = TYPE_ISA_DEVICE, |
105 | 488cb996 | Gerd Hoffmann | .instance_size = sizeof(ISASerialState),
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106 | 488cb996 | Gerd Hoffmann | .class_init = serial_isa_class_initfn, |
107 | 488cb996 | Gerd Hoffmann | }; |
108 | 488cb996 | Gerd Hoffmann | |
109 | 488cb996 | Gerd Hoffmann | static void serial_register_types(void) |
110 | 488cb996 | Gerd Hoffmann | { |
111 | 488cb996 | Gerd Hoffmann | type_register_static(&serial_isa_info); |
112 | 488cb996 | Gerd Hoffmann | } |
113 | 488cb996 | Gerd Hoffmann | |
114 | 488cb996 | Gerd Hoffmann | type_init(serial_register_types) |
115 | 488cb996 | Gerd Hoffmann | |
116 | 488cb996 | Gerd Hoffmann | bool serial_isa_init(ISABus *bus, int index, CharDriverState *chr) |
117 | 488cb996 | Gerd Hoffmann | { |
118 | 488cb996 | Gerd Hoffmann | ISADevice *dev; |
119 | 488cb996 | Gerd Hoffmann | |
120 | 488cb996 | Gerd Hoffmann | dev = isa_try_create(bus, "isa-serial");
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121 | 488cb996 | Gerd Hoffmann | if (!dev) {
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122 | 488cb996 | Gerd Hoffmann | return false; |
123 | 488cb996 | Gerd Hoffmann | } |
124 | 488cb996 | Gerd Hoffmann | qdev_prop_set_uint32(&dev->qdev, "index", index);
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125 | 488cb996 | Gerd Hoffmann | qdev_prop_set_chr(&dev->qdev, "chardev", chr);
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126 | 488cb996 | Gerd Hoffmann | if (qdev_init(&dev->qdev) < 0) { |
127 | 488cb996 | Gerd Hoffmann | return false; |
128 | 488cb996 | Gerd Hoffmann | } |
129 | 488cb996 | Gerd Hoffmann | return true; |
130 | 488cb996 | Gerd Hoffmann | } |