root / hw / isa-bus.c @ 9a3a8895
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1 | f915a115 | Gerd Hoffmann | /*
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2 | f915a115 | Gerd Hoffmann | * isa bus support for qdev.
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3 | f915a115 | Gerd Hoffmann | *
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4 | f915a115 | Gerd Hoffmann | * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
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5 | f915a115 | Gerd Hoffmann | *
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6 | f915a115 | Gerd Hoffmann | * This library is free software; you can redistribute it and/or
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7 | f915a115 | Gerd Hoffmann | * modify it under the terms of the GNU Lesser General Public
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8 | f915a115 | Gerd Hoffmann | * License as published by the Free Software Foundation; either
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9 | f915a115 | Gerd Hoffmann | * version 2 of the License, or (at your option) any later version.
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10 | f915a115 | Gerd Hoffmann | *
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11 | f915a115 | Gerd Hoffmann | * This library is distributed in the hope that it will be useful,
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12 | f915a115 | Gerd Hoffmann | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | f915a115 | Gerd Hoffmann | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | f915a115 | Gerd Hoffmann | * Lesser General Public License for more details.
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15 | f915a115 | Gerd Hoffmann | *
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16 | f915a115 | Gerd Hoffmann | * You should have received a copy of the GNU Lesser General Public
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17 | f915a115 | Gerd Hoffmann | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 | f915a115 | Gerd Hoffmann | */
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19 | f915a115 | Gerd Hoffmann | #include "hw.h" |
20 | 2091ba23 | Gerd Hoffmann | #include "monitor.h" |
21 | 2091ba23 | Gerd Hoffmann | #include "sysbus.h" |
22 | f915a115 | Gerd Hoffmann | #include "isa.h" |
23 | c839adec | Avi Kivity | #include "exec-memory.h" |
24 | f915a115 | Gerd Hoffmann | |
25 | f915a115 | Gerd Hoffmann | static ISABus *isabus;
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26 | fbe3288d | Paolo Bonzini | target_phys_addr_t isa_mem_base = 0;
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27 | f915a115 | Gerd Hoffmann | |
28 | 2091ba23 | Gerd Hoffmann | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
29 | 6a26e119 | Gleb Natapov | static char *isabus_get_fw_dev_path(DeviceState *dev); |
30 | 2091ba23 | Gerd Hoffmann | |
31 | 0d936928 | Anthony Liguori | static void isa_bus_class_init(ObjectClass *klass, void *data) |
32 | 0d936928 | Anthony Liguori | { |
33 | 0d936928 | Anthony Liguori | BusClass *k = BUS_CLASS(klass); |
34 | 0d936928 | Anthony Liguori | |
35 | 0d936928 | Anthony Liguori | k->print_dev = isabus_dev_print; |
36 | 0d936928 | Anthony Liguori | k->get_fw_dev_path = isabus_get_fw_dev_path; |
37 | 0d936928 | Anthony Liguori | } |
38 | 0d936928 | Anthony Liguori | |
39 | 0d936928 | Anthony Liguori | static const TypeInfo isa_bus_info = { |
40 | 0d936928 | Anthony Liguori | .name = TYPE_ISA_BUS, |
41 | 0d936928 | Anthony Liguori | .parent = TYPE_BUS, |
42 | 0d936928 | Anthony Liguori | .instance_size = sizeof(ISABus),
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43 | 0d936928 | Anthony Liguori | .class_init = isa_bus_class_init, |
44 | f915a115 | Gerd Hoffmann | }; |
45 | f915a115 | Gerd Hoffmann | |
46 | c2d0d012 | Richard Henderson | ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io) |
47 | f915a115 | Gerd Hoffmann | { |
48 | f915a115 | Gerd Hoffmann | if (isabus) {
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49 | f915a115 | Gerd Hoffmann | fprintf(stderr, "Can't create a second ISA bus\n");
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50 | f915a115 | Gerd Hoffmann | return NULL; |
51 | f915a115 | Gerd Hoffmann | } |
52 | 2091ba23 | Gerd Hoffmann | if (NULL == dev) { |
53 | 2091ba23 | Gerd Hoffmann | dev = qdev_create(NULL, "isabus-bridge"); |
54 | e23a1b33 | Markus Armbruster | qdev_init_nofail(dev); |
55 | 2091ba23 | Gerd Hoffmann | } |
56 | f915a115 | Gerd Hoffmann | |
57 | 0d936928 | Anthony Liguori | isabus = FROM_QBUS(ISABus, qbus_create(TYPE_ISA_BUS, dev, NULL));
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58 | c2d0d012 | Richard Henderson | isabus->address_space_io = address_space_io; |
59 | f915a115 | Gerd Hoffmann | return isabus;
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60 | f915a115 | Gerd Hoffmann | } |
61 | f915a115 | Gerd Hoffmann | |
62 | 48a18b3c | Hervé Poussineau | void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
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63 | f915a115 | Gerd Hoffmann | { |
64 | d3c68e4f | Hervé Poussineau | if (!bus) {
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65 | d3c68e4f | Hervé Poussineau | hw_error("Can't set isa irqs with no isa bus present.");
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66 | d3c68e4f | Hervé Poussineau | } |
67 | d3c68e4f | Hervé Poussineau | bus->irqs = irqs; |
68 | 2091ba23 | Gerd Hoffmann | } |
69 | 2091ba23 | Gerd Hoffmann | |
70 | 3a38d437 | Jes Sorensen | /*
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71 | ee951a37 | Jan Kiszka | * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
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72 | 3a38d437 | Jes Sorensen | *
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73 | 3a38d437 | Jes Sorensen | * This function is only for special cases such as the 'ferr', and
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74 | 3a38d437 | Jes Sorensen | * temporary use for normal devices until they are converted to qdev.
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75 | 3a38d437 | Jes Sorensen | */
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76 | 48a18b3c | Hervé Poussineau | qemu_irq isa_get_irq(ISADevice *dev, int isairq)
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77 | 3a38d437 | Jes Sorensen | { |
78 | 48a18b3c | Hervé Poussineau | assert(!dev || DO_UPCAST(ISABus, qbus, dev->qdev.parent_bus) == isabus); |
79 | 3a38d437 | Jes Sorensen | if (isairq < 0 || isairq > 15) { |
80 | 74782223 | Tristan Gingold | hw_error("isa irq %d invalid", isairq);
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81 | 3a38d437 | Jes Sorensen | } |
82 | 3a38d437 | Jes Sorensen | return isabus->irqs[isairq];
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83 | 3a38d437 | Jes Sorensen | } |
84 | 3a38d437 | Jes Sorensen | |
85 | 2e15e23b | Gerd Hoffmann | void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq) |
86 | f915a115 | Gerd Hoffmann | { |
87 | 2e15e23b | Gerd Hoffmann | assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); |
88 | 2e15e23b | Gerd Hoffmann | dev->isairq[dev->nirqs] = isairq; |
89 | 48a18b3c | Hervé Poussineau | *p = isa_get_irq(dev, isairq); |
90 | f915a115 | Gerd Hoffmann | dev->nirqs++; |
91 | f915a115 | Gerd Hoffmann | } |
92 | f915a115 | Gerd Hoffmann | |
93 | 0d959524 | Richard Henderson | static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport) |
94 | dee41d58 | Gleb Natapov | { |
95 | 0d959524 | Richard Henderson | if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) { |
96 | 0d959524 | Richard Henderson | dev->ioport_id = ioport; |
97 | dee41d58 | Gleb Natapov | } |
98 | dee41d58 | Gleb Natapov | } |
99 | dee41d58 | Gleb Natapov | |
100 | 78e20593 | Richard Henderson | void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
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101 | 78e20593 | Richard Henderson | { |
102 | 78e20593 | Richard Henderson | memory_region_add_subregion(isabus->address_space_io, start, io); |
103 | 0d959524 | Richard Henderson | isa_init_ioport(dev, start); |
104 | 78e20593 | Richard Henderson | } |
105 | 78e20593 | Richard Henderson | |
106 | d7500734 | Avi Kivity | void isa_register_portio_list(ISADevice *dev, uint16_t start,
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107 | d7500734 | Avi Kivity | const MemoryRegionPortio *pio_start,
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108 | d7500734 | Avi Kivity | void *opaque, const char *name) |
109 | d7500734 | Avi Kivity | { |
110 | d7500734 | Avi Kivity | PortioList *piolist = g_new(PortioList, 1);
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111 | d7500734 | Avi Kivity | |
112 | d7500734 | Avi Kivity | /* START is how we should treat DEV, regardless of the actual
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113 | d7500734 | Avi Kivity | contents of the portio array. This is how the old code
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114 | d7500734 | Avi Kivity | actually handled e.g. the FDC device. */
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115 | 0d959524 | Richard Henderson | isa_init_ioport(dev, start); |
116 | d7500734 | Avi Kivity | |
117 | d7500734 | Avi Kivity | portio_list_init(piolist, pio_start, opaque, name); |
118 | d7500734 | Avi Kivity | portio_list_add(piolist, isabus->address_space_io, start); |
119 | d7500734 | Avi Kivity | } |
120 | d7500734 | Avi Kivity | |
121 | d307af79 | Anthony Liguori | static int isa_qdev_init(DeviceState *qdev) |
122 | f915a115 | Gerd Hoffmann | { |
123 | 8f04ee08 | Anthony Liguori | ISADevice *dev = ISA_DEVICE(qdev); |
124 | 8f04ee08 | Anthony Liguori | ISADeviceClass *klass = ISA_DEVICE_GET_CLASS(dev); |
125 | f915a115 | Gerd Hoffmann | |
126 | 2091ba23 | Gerd Hoffmann | dev->isairq[0] = -1; |
127 | 2091ba23 | Gerd Hoffmann | dev->isairq[1] = -1; |
128 | 81a322d4 | Gerd Hoffmann | |
129 | 8f04ee08 | Anthony Liguori | if (klass->init) {
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130 | 8f04ee08 | Anthony Liguori | return klass->init(dev);
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131 | 8f04ee08 | Anthony Liguori | } |
132 | 8f04ee08 | Anthony Liguori | |
133 | 8f04ee08 | Anthony Liguori | return 0; |
134 | 8f04ee08 | Anthony Liguori | } |
135 | 8f04ee08 | Anthony Liguori | |
136 | 48a18b3c | Hervé Poussineau | ISADevice *isa_create(ISABus *bus, const char *name) |
137 | f915a115 | Gerd Hoffmann | { |
138 | f915a115 | Gerd Hoffmann | DeviceState *dev; |
139 | f915a115 | Gerd Hoffmann | |
140 | 75782268 | Hervé Poussineau | if (!bus) {
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141 | 74782223 | Tristan Gingold | hw_error("Tried to create isa device %s with no isa bus present.",
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142 | 3f66aa9c | Markus Armbruster | name); |
143 | f915a115 | Gerd Hoffmann | } |
144 | 75782268 | Hervé Poussineau | dev = qdev_create(&bus->qbus, name); |
145 | 8f04ee08 | Anthony Liguori | return ISA_DEVICE(dev);
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146 | f915a115 | Gerd Hoffmann | } |
147 | 2091ba23 | Gerd Hoffmann | |
148 | 48a18b3c | Hervé Poussineau | ISADevice *isa_try_create(ISABus *bus, const char *name) |
149 | 86f4a9a5 | Blue Swirl | { |
150 | 86f4a9a5 | Blue Swirl | DeviceState *dev; |
151 | 86f4a9a5 | Blue Swirl | |
152 | 75782268 | Hervé Poussineau | if (!bus) {
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153 | 86f4a9a5 | Blue Swirl | hw_error("Tried to create isa device %s with no isa bus present.",
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154 | 86f4a9a5 | Blue Swirl | name); |
155 | 86f4a9a5 | Blue Swirl | } |
156 | 75782268 | Hervé Poussineau | dev = qdev_try_create(&bus->qbus, name); |
157 | 8f04ee08 | Anthony Liguori | return ISA_DEVICE(dev);
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158 | 86f4a9a5 | Blue Swirl | } |
159 | 86f4a9a5 | Blue Swirl | |
160 | 48a18b3c | Hervé Poussineau | ISADevice *isa_create_simple(ISABus *bus, const char *name) |
161 | 924f6d72 | Gerd Hoffmann | { |
162 | 924f6d72 | Gerd Hoffmann | ISADevice *dev; |
163 | 924f6d72 | Gerd Hoffmann | |
164 | 48a18b3c | Hervé Poussineau | dev = isa_create(bus, name); |
165 | 3f66aa9c | Markus Armbruster | qdev_init_nofail(&dev->qdev); |
166 | 924f6d72 | Gerd Hoffmann | return dev;
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167 | 924f6d72 | Gerd Hoffmann | } |
168 | 924f6d72 | Gerd Hoffmann | |
169 | 2091ba23 | Gerd Hoffmann | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
170 | 2091ba23 | Gerd Hoffmann | { |
171 | 8f04ee08 | Anthony Liguori | ISADevice *d = ISA_DEVICE(dev); |
172 | 2091ba23 | Gerd Hoffmann | |
173 | 2091ba23 | Gerd Hoffmann | if (d->isairq[1] != -1) { |
174 | 2091ba23 | Gerd Hoffmann | monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "", |
175 | 2091ba23 | Gerd Hoffmann | d->isairq[0], d->isairq[1]); |
176 | 2091ba23 | Gerd Hoffmann | } else if (d->isairq[0] != -1) { |
177 | 2091ba23 | Gerd Hoffmann | monitor_printf(mon, "%*sisa irq %d\n", indent, "", |
178 | 2091ba23 | Gerd Hoffmann | d->isairq[0]);
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179 | 2091ba23 | Gerd Hoffmann | } |
180 | 2091ba23 | Gerd Hoffmann | } |
181 | 2091ba23 | Gerd Hoffmann | |
182 | 81a322d4 | Gerd Hoffmann | static int isabus_bridge_init(SysBusDevice *dev) |
183 | 2091ba23 | Gerd Hoffmann | { |
184 | 2091ba23 | Gerd Hoffmann | /* nothing */
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185 | 81a322d4 | Gerd Hoffmann | return 0; |
186 | 2091ba23 | Gerd Hoffmann | } |
187 | 2091ba23 | Gerd Hoffmann | |
188 | 999e12bb | Anthony Liguori | static void isabus_bridge_class_init(ObjectClass *klass, void *data) |
189 | 999e12bb | Anthony Liguori | { |
190 | 39bffca2 | Anthony Liguori | DeviceClass *dc = DEVICE_CLASS(klass); |
191 | 999e12bb | Anthony Liguori | SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
192 | 999e12bb | Anthony Liguori | |
193 | 999e12bb | Anthony Liguori | k->init = isabus_bridge_init; |
194 | 39bffca2 | Anthony Liguori | dc->fw_name = "isa";
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195 | 39bffca2 | Anthony Liguori | dc->no_user = 1;
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196 | 999e12bb | Anthony Liguori | } |
197 | 999e12bb | Anthony Liguori | |
198 | 39bffca2 | Anthony Liguori | static TypeInfo isabus_bridge_info = {
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199 | 39bffca2 | Anthony Liguori | .name = "isabus-bridge",
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200 | 39bffca2 | Anthony Liguori | .parent = TYPE_SYS_BUS_DEVICE, |
201 | 39bffca2 | Anthony Liguori | .instance_size = sizeof(SysBusDevice),
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202 | 39bffca2 | Anthony Liguori | .class_init = isabus_bridge_class_init, |
203 | 2091ba23 | Gerd Hoffmann | }; |
204 | 2091ba23 | Gerd Hoffmann | |
205 | 39bffca2 | Anthony Liguori | static void isa_device_class_init(ObjectClass *klass, void *data) |
206 | 39bffca2 | Anthony Liguori | { |
207 | 39bffca2 | Anthony Liguori | DeviceClass *k = DEVICE_CLASS(klass); |
208 | 39bffca2 | Anthony Liguori | k->init = isa_qdev_init; |
209 | 0d936928 | Anthony Liguori | k->bus_type = TYPE_ISA_BUS; |
210 | 39bffca2 | Anthony Liguori | } |
211 | 39bffca2 | Anthony Liguori | |
212 | 8f04ee08 | Anthony Liguori | static TypeInfo isa_device_type_info = {
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213 | 8f04ee08 | Anthony Liguori | .name = TYPE_ISA_DEVICE, |
214 | 8f04ee08 | Anthony Liguori | .parent = TYPE_DEVICE, |
215 | 8f04ee08 | Anthony Liguori | .instance_size = sizeof(ISADevice),
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216 | 8f04ee08 | Anthony Liguori | .abstract = true,
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217 | 8f04ee08 | Anthony Liguori | .class_size = sizeof(ISADeviceClass),
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218 | 39bffca2 | Anthony Liguori | .class_init = isa_device_class_init, |
219 | 8f04ee08 | Anthony Liguori | }; |
220 | 8f04ee08 | Anthony Liguori | |
221 | 83f7d43a | Andreas Färber | static void isabus_register_types(void) |
222 | 2091ba23 | Gerd Hoffmann | { |
223 | 0d936928 | Anthony Liguori | type_register_static(&isa_bus_info); |
224 | 39bffca2 | Anthony Liguori | type_register_static(&isabus_bridge_info); |
225 | 8f04ee08 | Anthony Liguori | type_register_static(&isa_device_type_info); |
226 | 2091ba23 | Gerd Hoffmann | } |
227 | 2091ba23 | Gerd Hoffmann | |
228 | 6a26e119 | Gleb Natapov | static char *isabus_get_fw_dev_path(DeviceState *dev) |
229 | 6a26e119 | Gleb Natapov | { |
230 | 6a26e119 | Gleb Natapov | ISADevice *d = (ISADevice*)dev; |
231 | 6a26e119 | Gleb Natapov | char path[40]; |
232 | 6a26e119 | Gleb Natapov | int off;
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233 | 6a26e119 | Gleb Natapov | |
234 | 6a26e119 | Gleb Natapov | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); |
235 | ebf47c24 | Richard Henderson | if (d->ioport_id) {
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236 | ebf47c24 | Richard Henderson | snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id); |
237 | 6a26e119 | Gleb Natapov | } |
238 | 6a26e119 | Gleb Natapov | |
239 | 6a26e119 | Gleb Natapov | return strdup(path);
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240 | 6a26e119 | Gleb Natapov | } |
241 | 6a26e119 | Gleb Natapov | |
242 | c839adec | Avi Kivity | MemoryRegion *isa_address_space(ISADevice *dev) |
243 | c839adec | Avi Kivity | { |
244 | c839adec | Avi Kivity | return get_system_memory();
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245 | c839adec | Avi Kivity | } |
246 | c839adec | Avi Kivity | |
247 | 83f7d43a | Andreas Färber | type_init(isabus_register_types) |