root / hw / sysbus.c @ 1d7a1197
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1 | aae9460e | Paul Brook | /*
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2 | aae9460e | Paul Brook | * System (CPU) Bus device support code
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3 | aae9460e | Paul Brook | *
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4 | aae9460e | Paul Brook | * Copyright (c) 2009 CodeSourcery
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5 | aae9460e | Paul Brook | *
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6 | aae9460e | Paul Brook | * This library is free software; you can redistribute it and/or
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7 | aae9460e | Paul Brook | * modify it under the terms of the GNU Lesser General Public
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8 | aae9460e | Paul Brook | * License as published by the Free Software Foundation; either
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9 | aae9460e | Paul Brook | * version 2 of the License, or (at your option) any later version.
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10 | aae9460e | Paul Brook | *
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11 | aae9460e | Paul Brook | * This library is distributed in the hope that it will be useful,
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12 | aae9460e | Paul Brook | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | aae9460e | Paul Brook | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | aae9460e | Paul Brook | * Lesser General Public License for more details.
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15 | aae9460e | Paul Brook | *
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16 | aae9460e | Paul Brook | * You should have received a copy of the GNU Lesser General Public
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17 | 8167ee88 | Blue Swirl | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 | aae9460e | Paul Brook | */
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19 | aae9460e | Paul Brook | |
20 | aae9460e | Paul Brook | #include "sysbus.h" |
21 | cae4956e | Gerd Hoffmann | #include "monitor.h" |
22 | ec3bb837 | Avi Kivity | #include "exec-memory.h" |
23 | aae9460e | Paul Brook | |
24 | 10c4c98a | Gerd Hoffmann | static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
25 | c646f74f | Gleb Natapov | static char *sysbus_get_fw_dev_path(DeviceState *dev); |
26 | 10c4c98a | Gerd Hoffmann | |
27 | 10c4c98a | Gerd Hoffmann | struct BusInfo system_bus_info = {
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28 | 10c4c98a | Gerd Hoffmann | .name = "System",
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29 | 10c4c98a | Gerd Hoffmann | .size = sizeof(BusState),
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30 | 10c4c98a | Gerd Hoffmann | .print_dev = sysbus_dev_print, |
31 | c646f74f | Gleb Natapov | .get_fw_dev_path = sysbus_get_fw_dev_path, |
32 | 10c4c98a | Gerd Hoffmann | }; |
33 | 10c4c98a | Gerd Hoffmann | |
34 | aae9460e | Paul Brook | void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq) |
35 | aae9460e | Paul Brook | { |
36 | aae9460e | Paul Brook | assert(n >= 0 && n < dev->num_irq);
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37 | 660f11be | Blue Swirl | dev->irqs[n] = NULL;
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38 | aae9460e | Paul Brook | if (dev->irqp[n]) {
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39 | aae9460e | Paul Brook | *dev->irqp[n] = irq; |
40 | aae9460e | Paul Brook | } |
41 | aae9460e | Paul Brook | } |
42 | aae9460e | Paul Brook | |
43 | c227f099 | Anthony Liguori | void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr) |
44 | aae9460e | Paul Brook | { |
45 | aae9460e | Paul Brook | assert(n >= 0 && n < dev->num_mmio);
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46 | aae9460e | Paul Brook | |
47 | aae9460e | Paul Brook | if (dev->mmio[n].addr == addr) {
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48 | aae9460e | Paul Brook | /* ??? region already mapped here. */
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49 | aae9460e | Paul Brook | return;
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50 | aae9460e | Paul Brook | } |
51 | c227f099 | Anthony Liguori | if (dev->mmio[n].addr != (target_phys_addr_t)-1) { |
52 | aae9460e | Paul Brook | /* Unregister previous mapping. */
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53 | e114fead | Peter Maydell | memory_region_del_subregion(get_system_memory(), dev->mmio[n].memory); |
54 | aae9460e | Paul Brook | } |
55 | aae9460e | Paul Brook | dev->mmio[n].addr = addr; |
56 | e114fead | Peter Maydell | memory_region_add_subregion(get_system_memory(), |
57 | e114fead | Peter Maydell | addr, |
58 | e114fead | Peter Maydell | dev->mmio[n].memory); |
59 | aae9460e | Paul Brook | } |
60 | aae9460e | Paul Brook | |
61 | aae9460e | Paul Brook | |
62 | aae9460e | Paul Brook | /* Request an IRQ source. The actual IRQ object may be populated later. */
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63 | aae9460e | Paul Brook | void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p)
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64 | aae9460e | Paul Brook | { |
65 | aae9460e | Paul Brook | int n;
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66 | aae9460e | Paul Brook | |
67 | aae9460e | Paul Brook | assert(dev->num_irq < QDEV_MAX_IRQ); |
68 | aae9460e | Paul Brook | n = dev->num_irq++; |
69 | aae9460e | Paul Brook | dev->irqp[n] = p; |
70 | aae9460e | Paul Brook | } |
71 | aae9460e | Paul Brook | |
72 | aae9460e | Paul Brook | /* Pass IRQs from a target device. */
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73 | aae9460e | Paul Brook | void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target)
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74 | aae9460e | Paul Brook | { |
75 | aae9460e | Paul Brook | int i;
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76 | aae9460e | Paul Brook | assert(dev->num_irq == 0);
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77 | aae9460e | Paul Brook | dev->num_irq = target->num_irq; |
78 | aae9460e | Paul Brook | for (i = 0; i < dev->num_irq; i++) { |
79 | aae9460e | Paul Brook | dev->irqp[i] = target->irqp[i]; |
80 | aae9460e | Paul Brook | } |
81 | aae9460e | Paul Brook | } |
82 | aae9460e | Paul Brook | |
83 | 750ecd44 | Avi Kivity | void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory)
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84 | ec3bb837 | Avi Kivity | { |
85 | ec3bb837 | Avi Kivity | int n;
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86 | ec3bb837 | Avi Kivity | |
87 | ec3bb837 | Avi Kivity | assert(dev->num_mmio < QDEV_MAX_MMIO); |
88 | ec3bb837 | Avi Kivity | n = dev->num_mmio++; |
89 | ec3bb837 | Avi Kivity | dev->mmio[n].addr = -1;
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90 | ec3bb837 | Avi Kivity | dev->mmio[n].memory = memory; |
91 | ec3bb837 | Avi Kivity | } |
92 | ec3bb837 | Avi Kivity | |
93 | 46c305ef | Peter Maydell | MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n)
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94 | 46c305ef | Peter Maydell | { |
95 | 46c305ef | Peter Maydell | return dev->mmio[n].memory;
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96 | 46c305ef | Peter Maydell | } |
97 | 46c305ef | Peter Maydell | |
98 | c646f74f | Gleb Natapov | void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size)
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99 | c646f74f | Gleb Natapov | { |
100 | c646f74f | Gleb Natapov | pio_addr_t i; |
101 | c646f74f | Gleb Natapov | |
102 | c646f74f | Gleb Natapov | for (i = 0; i < size; i++) { |
103 | c646f74f | Gleb Natapov | assert(dev->num_pio < QDEV_MAX_PIO); |
104 | c646f74f | Gleb Natapov | dev->pio[dev->num_pio++] = ioport++; |
105 | c646f74f | Gleb Natapov | } |
106 | c646f74f | Gleb Natapov | } |
107 | c646f74f | Gleb Natapov | |
108 | d307af79 | Anthony Liguori | static int sysbus_device_init(DeviceState *dev) |
109 | aae9460e | Paul Brook | { |
110 | 999e12bb | Anthony Liguori | SysBusDevice *sd = SYS_BUS_DEVICE(dev); |
111 | 999e12bb | Anthony Liguori | SysBusDeviceClass *sbc = SYS_BUS_DEVICE_GET_CLASS(sd); |
112 | aae9460e | Paul Brook | |
113 | 999e12bb | Anthony Liguori | return sbc->init(sd);
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114 | aae9460e | Paul Brook | } |
115 | aae9460e | Paul Brook | |
116 | aae9460e | Paul Brook | DeviceState *sysbus_create_varargs(const char *name, |
117 | c227f099 | Anthony Liguori | target_phys_addr_t addr, ...) |
118 | aae9460e | Paul Brook | { |
119 | aae9460e | Paul Brook | DeviceState *dev; |
120 | aae9460e | Paul Brook | SysBusDevice *s; |
121 | aae9460e | Paul Brook | va_list va; |
122 | aae9460e | Paul Brook | qemu_irq irq; |
123 | aae9460e | Paul Brook | int n;
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124 | aae9460e | Paul Brook | |
125 | aae9460e | Paul Brook | dev = qdev_create(NULL, name);
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126 | aae9460e | Paul Brook | s = sysbus_from_qdev(dev); |
127 | e23a1b33 | Markus Armbruster | qdev_init_nofail(dev); |
128 | c227f099 | Anthony Liguori | if (addr != (target_phys_addr_t)-1) { |
129 | aae9460e | Paul Brook | sysbus_mmio_map(s, 0, addr);
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130 | aae9460e | Paul Brook | } |
131 | aae9460e | Paul Brook | va_start(va, addr); |
132 | aae9460e | Paul Brook | n = 0;
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133 | aae9460e | Paul Brook | while (1) { |
134 | 4912371f | Blue Swirl | irq = va_arg(va, qemu_irq); |
135 | 4912371f | Blue Swirl | if (!irq) {
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136 | 4912371f | Blue Swirl | break;
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137 | 4912371f | Blue Swirl | } |
138 | 4912371f | Blue Swirl | sysbus_connect_irq(s, n, irq); |
139 | 4912371f | Blue Swirl | n++; |
140 | 4912371f | Blue Swirl | } |
141 | d0bc5bc3 | Markus Armbruster | va_end(va); |
142 | 4912371f | Blue Swirl | return dev;
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143 | 4912371f | Blue Swirl | } |
144 | 4912371f | Blue Swirl | |
145 | 4912371f | Blue Swirl | DeviceState *sysbus_try_create_varargs(const char *name, |
146 | 4912371f | Blue Swirl | target_phys_addr_t addr, ...) |
147 | 4912371f | Blue Swirl | { |
148 | 4912371f | Blue Swirl | DeviceState *dev; |
149 | 4912371f | Blue Swirl | SysBusDevice *s; |
150 | 4912371f | Blue Swirl | va_list va; |
151 | 4912371f | Blue Swirl | qemu_irq irq; |
152 | 4912371f | Blue Swirl | int n;
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153 | 4912371f | Blue Swirl | |
154 | 4912371f | Blue Swirl | dev = qdev_try_create(NULL, name);
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155 | 4912371f | Blue Swirl | if (!dev) {
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156 | 4912371f | Blue Swirl | return NULL; |
157 | 4912371f | Blue Swirl | } |
158 | 4912371f | Blue Swirl | s = sysbus_from_qdev(dev); |
159 | 4912371f | Blue Swirl | qdev_init_nofail(dev); |
160 | 4912371f | Blue Swirl | if (addr != (target_phys_addr_t)-1) { |
161 | 4912371f | Blue Swirl | sysbus_mmio_map(s, 0, addr);
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162 | 4912371f | Blue Swirl | } |
163 | 4912371f | Blue Swirl | va_start(va, addr); |
164 | 4912371f | Blue Swirl | n = 0;
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165 | 4912371f | Blue Swirl | while (1) { |
166 | aae9460e | Paul Brook | irq = va_arg(va, qemu_irq); |
167 | aae9460e | Paul Brook | if (!irq) {
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168 | aae9460e | Paul Brook | break;
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169 | aae9460e | Paul Brook | } |
170 | aae9460e | Paul Brook | sysbus_connect_irq(s, n, irq); |
171 | aae9460e | Paul Brook | n++; |
172 | aae9460e | Paul Brook | } |
173 | d0bc5bc3 | Markus Armbruster | va_end(va); |
174 | aae9460e | Paul Brook | return dev;
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175 | aae9460e | Paul Brook | } |
176 | cae4956e | Gerd Hoffmann | |
177 | 10c4c98a | Gerd Hoffmann | static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
178 | cae4956e | Gerd Hoffmann | { |
179 | cae4956e | Gerd Hoffmann | SysBusDevice *s = sysbus_from_qdev(dev); |
180 | 3f7f1c80 | Avi Kivity | target_phys_addr_t size; |
181 | cae4956e | Gerd Hoffmann | int i;
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182 | cae4956e | Gerd Hoffmann | |
183 | 0fba9fd6 | Dmitry Eremin-Solenikov | monitor_printf(mon, "%*sirq %d\n", indent, "", s->num_irq); |
184 | cae4956e | Gerd Hoffmann | for (i = 0; i < s->num_mmio; i++) { |
185 | e114fead | Peter Maydell | size = memory_region_size(s->mmio[i].memory); |
186 | cae4956e | Gerd Hoffmann | monitor_printf(mon, "%*smmio " TARGET_FMT_plx "/" TARGET_FMT_plx "\n", |
187 | 3f7f1c80 | Avi Kivity | indent, "", s->mmio[i].addr, size);
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188 | cae4956e | Gerd Hoffmann | } |
189 | cae4956e | Gerd Hoffmann | } |
190 | c646f74f | Gleb Natapov | |
191 | c646f74f | Gleb Natapov | static char *sysbus_get_fw_dev_path(DeviceState *dev) |
192 | c646f74f | Gleb Natapov | { |
193 | c646f74f | Gleb Natapov | SysBusDevice *s = sysbus_from_qdev(dev); |
194 | c646f74f | Gleb Natapov | char path[40]; |
195 | c646f74f | Gleb Natapov | int off;
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196 | c646f74f | Gleb Natapov | |
197 | c646f74f | Gleb Natapov | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); |
198 | c646f74f | Gleb Natapov | |
199 | c646f74f | Gleb Natapov | if (s->num_mmio) {
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200 | c646f74f | Gleb Natapov | snprintf(path + off, sizeof(path) - off, "@"TARGET_FMT_plx, |
201 | c646f74f | Gleb Natapov | s->mmio[0].addr);
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202 | c646f74f | Gleb Natapov | } else if (s->num_pio) { |
203 | c646f74f | Gleb Natapov | snprintf(path + off, sizeof(path) - off, "@i%04x", s->pio[0]); |
204 | c646f74f | Gleb Natapov | } |
205 | c646f74f | Gleb Natapov | |
206 | c646f74f | Gleb Natapov | return strdup(path);
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207 | c646f74f | Gleb Natapov | } |
208 | 2b985d9c | Avi Kivity | |
209 | 2b985d9c | Avi Kivity | void sysbus_add_memory(SysBusDevice *dev, target_phys_addr_t addr,
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210 | 2b985d9c | Avi Kivity | MemoryRegion *mem) |
211 | 2b985d9c | Avi Kivity | { |
212 | 2b985d9c | Avi Kivity | memory_region_add_subregion(get_system_memory(), addr, mem); |
213 | 2b985d9c | Avi Kivity | } |
214 | 2b985d9c | Avi Kivity | |
215 | d40b2af8 | Avi Kivity | void sysbus_add_memory_overlap(SysBusDevice *dev, target_phys_addr_t addr,
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216 | d40b2af8 | Avi Kivity | MemoryRegion *mem, unsigned priority)
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217 | d40b2af8 | Avi Kivity | { |
218 | d40b2af8 | Avi Kivity | memory_region_add_subregion_overlap(get_system_memory(), addr, mem, |
219 | d40b2af8 | Avi Kivity | priority); |
220 | d40b2af8 | Avi Kivity | } |
221 | d40b2af8 | Avi Kivity | |
222 | 2b985d9c | Avi Kivity | void sysbus_del_memory(SysBusDevice *dev, MemoryRegion *mem)
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223 | 2b985d9c | Avi Kivity | { |
224 | 2b985d9c | Avi Kivity | memory_region_del_subregion(get_system_memory(), mem); |
225 | 2b985d9c | Avi Kivity | } |
226 | 2b985d9c | Avi Kivity | |
227 | 2b985d9c | Avi Kivity | void sysbus_add_io(SysBusDevice *dev, target_phys_addr_t addr,
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228 | 2b985d9c | Avi Kivity | MemoryRegion *mem) |
229 | 2b985d9c | Avi Kivity | { |
230 | 2b985d9c | Avi Kivity | memory_region_add_subregion(get_system_io(), addr, mem); |
231 | 2b985d9c | Avi Kivity | } |
232 | 2b985d9c | Avi Kivity | |
233 | 2b985d9c | Avi Kivity | void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem)
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234 | 2b985d9c | Avi Kivity | { |
235 | 2b985d9c | Avi Kivity | memory_region_del_subregion(get_system_io(), mem); |
236 | 2b985d9c | Avi Kivity | } |
237 | 62ec4832 | Avi Kivity | |
238 | 62ec4832 | Avi Kivity | MemoryRegion *sysbus_address_space(SysBusDevice *dev) |
239 | 62ec4832 | Avi Kivity | { |
240 | 62ec4832 | Avi Kivity | return get_system_memory();
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241 | 62ec4832 | Avi Kivity | } |
242 | 999e12bb | Anthony Liguori | |
243 | 39bffca2 | Anthony Liguori | static void sysbus_device_class_init(ObjectClass *klass, void *data) |
244 | 39bffca2 | Anthony Liguori | { |
245 | 39bffca2 | Anthony Liguori | DeviceClass *k = DEVICE_CLASS(klass); |
246 | 39bffca2 | Anthony Liguori | k->init = sysbus_device_init; |
247 | 39bffca2 | Anthony Liguori | k->bus_info = &system_bus_info; |
248 | 39bffca2 | Anthony Liguori | } |
249 | 39bffca2 | Anthony Liguori | |
250 | 999e12bb | Anthony Liguori | static TypeInfo sysbus_device_type_info = {
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251 | 999e12bb | Anthony Liguori | .name = TYPE_SYS_BUS_DEVICE, |
252 | 999e12bb | Anthony Liguori | .parent = TYPE_DEVICE, |
253 | 999e12bb | Anthony Liguori | .instance_size = sizeof(SysBusDevice),
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254 | 999e12bb | Anthony Liguori | .abstract = true,
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255 | 999e12bb | Anthony Liguori | .class_size = sizeof(SysBusDeviceClass),
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256 | 39bffca2 | Anthony Liguori | .class_init = sysbus_device_class_init, |
257 | 999e12bb | Anthony Liguori | }; |
258 | 999e12bb | Anthony Liguori | |
259 | 83f7d43a | Andreas Färber | static void sysbus_register_types(void) |
260 | 999e12bb | Anthony Liguori | { |
261 | 999e12bb | Anthony Liguori | type_register_static(&sysbus_device_type_info); |
262 | 999e12bb | Anthony Liguori | } |
263 | 999e12bb | Anthony Liguori | |
264 | 83f7d43a | Andreas Färber | type_init(sysbus_register_types) |