root / hw / sysbus.c @ 71cf9e62
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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 | ec3bb837 | Avi Kivity | if (dev->mmio[n].memory) {
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54 | ec3bb837 | Avi Kivity | memory_region_del_subregion(get_system_memory(), |
55 | ec3bb837 | Avi Kivity | dev->mmio[n].memory); |
56 | d7612013 | Avi Kivity | } else if (dev->mmio[n].unmap) { |
57 | d7612013 | Avi Kivity | dev->mmio[n].unmap(dev, dev->mmio[n].addr); |
58 | ec3bb837 | Avi Kivity | } else {
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59 | ec3bb837 | Avi Kivity | cpu_register_physical_memory(dev->mmio[n].addr, dev->mmio[n].size, |
60 | ec3bb837 | Avi Kivity | IO_MEM_UNASSIGNED); |
61 | ec3bb837 | Avi Kivity | } |
62 | aae9460e | Paul Brook | } |
63 | aae9460e | Paul Brook | dev->mmio[n].addr = addr; |
64 | ec3bb837 | Avi Kivity | if (dev->mmio[n].memory) {
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65 | ec3bb837 | Avi Kivity | memory_region_add_subregion(get_system_memory(), |
66 | ec3bb837 | Avi Kivity | addr, |
67 | ec3bb837 | Avi Kivity | dev->mmio[n].memory); |
68 | ec3bb837 | Avi Kivity | } else if (dev->mmio[n].cb) { |
69 | aae9460e | Paul Brook | dev->mmio[n].cb(dev, addr); |
70 | aae9460e | Paul Brook | } else {
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71 | aae9460e | Paul Brook | cpu_register_physical_memory(addr, dev->mmio[n].size, |
72 | aae9460e | Paul Brook | dev->mmio[n].iofunc); |
73 | aae9460e | Paul Brook | } |
74 | aae9460e | Paul Brook | } |
75 | aae9460e | Paul Brook | |
76 | aae9460e | Paul Brook | |
77 | aae9460e | Paul Brook | /* Request an IRQ source. The actual IRQ object may be populated later. */
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78 | aae9460e | Paul Brook | void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p)
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79 | aae9460e | Paul Brook | { |
80 | aae9460e | Paul Brook | int n;
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81 | aae9460e | Paul Brook | |
82 | aae9460e | Paul Brook | assert(dev->num_irq < QDEV_MAX_IRQ); |
83 | aae9460e | Paul Brook | n = dev->num_irq++; |
84 | aae9460e | Paul Brook | dev->irqp[n] = p; |
85 | aae9460e | Paul Brook | } |
86 | aae9460e | Paul Brook | |
87 | aae9460e | Paul Brook | /* Pass IRQs from a target device. */
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88 | aae9460e | Paul Brook | void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target)
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89 | aae9460e | Paul Brook | { |
90 | aae9460e | Paul Brook | int i;
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91 | aae9460e | Paul Brook | assert(dev->num_irq == 0);
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92 | aae9460e | Paul Brook | dev->num_irq = target->num_irq; |
93 | aae9460e | Paul Brook | for (i = 0; i < dev->num_irq; i++) { |
94 | aae9460e | Paul Brook | dev->irqp[i] = target->irqp[i]; |
95 | aae9460e | Paul Brook | } |
96 | aae9460e | Paul Brook | } |
97 | aae9460e | Paul Brook | |
98 | 3f7132d1 | Blue Swirl | void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size,
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99 | 3f7132d1 | Blue Swirl | ram_addr_t iofunc) |
100 | aae9460e | Paul Brook | { |
101 | aae9460e | Paul Brook | int n;
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102 | aae9460e | Paul Brook | |
103 | aae9460e | Paul Brook | assert(dev->num_mmio < QDEV_MAX_MMIO); |
104 | aae9460e | Paul Brook | n = dev->num_mmio++; |
105 | aae9460e | Paul Brook | dev->mmio[n].addr = -1;
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106 | aae9460e | Paul Brook | dev->mmio[n].size = size; |
107 | aae9460e | Paul Brook | dev->mmio[n].iofunc = iofunc; |
108 | aae9460e | Paul Brook | } |
109 | aae9460e | Paul Brook | |
110 | d7612013 | Avi Kivity | void sysbus_init_mmio_cb2(SysBusDevice *dev,
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111 | d7612013 | Avi Kivity | mmio_mapfunc cb, mmio_mapfunc unmap) |
112 | d7612013 | Avi Kivity | { |
113 | d7612013 | Avi Kivity | int n;
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114 | d7612013 | Avi Kivity | |
115 | d7612013 | Avi Kivity | assert(dev->num_mmio < QDEV_MAX_MMIO); |
116 | d7612013 | Avi Kivity | n = dev->num_mmio++; |
117 | d7612013 | Avi Kivity | dev->mmio[n].addr = -1;
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118 | d7612013 | Avi Kivity | dev->mmio[n].size = 0;
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119 | d7612013 | Avi Kivity | dev->mmio[n].cb = cb; |
120 | d7612013 | Avi Kivity | dev->mmio[n].unmap = unmap; |
121 | d7612013 | Avi Kivity | } |
122 | d7612013 | Avi Kivity | |
123 | ec3bb837 | Avi Kivity | void sysbus_init_mmio_region(SysBusDevice *dev, MemoryRegion *memory)
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124 | ec3bb837 | Avi Kivity | { |
125 | ec3bb837 | Avi Kivity | int n;
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126 | ec3bb837 | Avi Kivity | |
127 | ec3bb837 | Avi Kivity | assert(dev->num_mmio < QDEV_MAX_MMIO); |
128 | ec3bb837 | Avi Kivity | n = dev->num_mmio++; |
129 | ec3bb837 | Avi Kivity | dev->mmio[n].addr = -1;
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130 | ec3bb837 | Avi Kivity | dev->mmio[n].size = memory_region_size(memory); |
131 | ec3bb837 | Avi Kivity | dev->mmio[n].memory = memory; |
132 | ec3bb837 | Avi Kivity | } |
133 | ec3bb837 | Avi Kivity | |
134 | 46c305ef | Peter Maydell | MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n)
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135 | 46c305ef | Peter Maydell | { |
136 | 46c305ef | Peter Maydell | return dev->mmio[n].memory;
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137 | 46c305ef | Peter Maydell | } |
138 | 46c305ef | Peter Maydell | |
139 | c646f74f | Gleb Natapov | void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size)
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140 | c646f74f | Gleb Natapov | { |
141 | c646f74f | Gleb Natapov | pio_addr_t i; |
142 | c646f74f | Gleb Natapov | |
143 | c646f74f | Gleb Natapov | for (i = 0; i < size; i++) { |
144 | c646f74f | Gleb Natapov | assert(dev->num_pio < QDEV_MAX_PIO); |
145 | c646f74f | Gleb Natapov | dev->pio[dev->num_pio++] = ioport++; |
146 | c646f74f | Gleb Natapov | } |
147 | c646f74f | Gleb Natapov | } |
148 | c646f74f | Gleb Natapov | |
149 | 81a322d4 | Gerd Hoffmann | static int sysbus_device_init(DeviceState *dev, DeviceInfo *base) |
150 | aae9460e | Paul Brook | { |
151 | 02e2da45 | Paul Brook | SysBusDeviceInfo *info = container_of(base, SysBusDeviceInfo, qdev); |
152 | aae9460e | Paul Brook | |
153 | 81a322d4 | Gerd Hoffmann | return info->init(sysbus_from_qdev(dev));
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154 | aae9460e | Paul Brook | } |
155 | aae9460e | Paul Brook | |
156 | 074f2fff | Gerd Hoffmann | void sysbus_register_withprop(SysBusDeviceInfo *info)
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157 | aae9460e | Paul Brook | { |
158 | 02e2da45 | Paul Brook | info->qdev.init = sysbus_device_init; |
159 | 10c4c98a | Gerd Hoffmann | info->qdev.bus_info = &system_bus_info; |
160 | 02e2da45 | Paul Brook | |
161 | 074f2fff | Gerd Hoffmann | assert(info->qdev.size >= sizeof(SysBusDevice));
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162 | 074f2fff | Gerd Hoffmann | qdev_register(&info->qdev); |
163 | aae9460e | Paul Brook | } |
164 | aae9460e | Paul Brook | |
165 | 1431b6a1 | Paul Brook | void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init) |
166 | 1431b6a1 | Paul Brook | { |
167 | 1431b6a1 | Paul Brook | SysBusDeviceInfo *info; |
168 | 1431b6a1 | Paul Brook | |
169 | 7267c094 | Anthony Liguori | info = g_malloc0(sizeof(*info));
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170 | 7267c094 | Anthony Liguori | info->qdev.name = g_strdup(name); |
171 | 074f2fff | Gerd Hoffmann | info->qdev.size = size; |
172 | 1431b6a1 | Paul Brook | info->init = init; |
173 | 074f2fff | Gerd Hoffmann | sysbus_register_withprop(info); |
174 | 1431b6a1 | Paul Brook | } |
175 | 1431b6a1 | Paul Brook | |
176 | aae9460e | Paul Brook | DeviceState *sysbus_create_varargs(const char *name, |
177 | c227f099 | Anthony Liguori | target_phys_addr_t addr, ...) |
178 | aae9460e | Paul Brook | { |
179 | aae9460e | Paul Brook | DeviceState *dev; |
180 | aae9460e | Paul Brook | SysBusDevice *s; |
181 | aae9460e | Paul Brook | va_list va; |
182 | aae9460e | Paul Brook | qemu_irq irq; |
183 | aae9460e | Paul Brook | int n;
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184 | aae9460e | Paul Brook | |
185 | aae9460e | Paul Brook | dev = qdev_create(NULL, name);
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186 | aae9460e | Paul Brook | s = sysbus_from_qdev(dev); |
187 | e23a1b33 | Markus Armbruster | qdev_init_nofail(dev); |
188 | c227f099 | Anthony Liguori | if (addr != (target_phys_addr_t)-1) { |
189 | aae9460e | Paul Brook | sysbus_mmio_map(s, 0, addr);
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190 | aae9460e | Paul Brook | } |
191 | aae9460e | Paul Brook | va_start(va, addr); |
192 | aae9460e | Paul Brook | n = 0;
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193 | aae9460e | Paul Brook | while (1) { |
194 | 4912371f | Blue Swirl | irq = va_arg(va, qemu_irq); |
195 | 4912371f | Blue Swirl | if (!irq) {
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196 | 4912371f | Blue Swirl | break;
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197 | 4912371f | Blue Swirl | } |
198 | 4912371f | Blue Swirl | sysbus_connect_irq(s, n, irq); |
199 | 4912371f | Blue Swirl | n++; |
200 | 4912371f | Blue Swirl | } |
201 | 4912371f | Blue Swirl | return dev;
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202 | 4912371f | Blue Swirl | } |
203 | 4912371f | Blue Swirl | |
204 | 4912371f | Blue Swirl | DeviceState *sysbus_try_create_varargs(const char *name, |
205 | 4912371f | Blue Swirl | target_phys_addr_t addr, ...) |
206 | 4912371f | Blue Swirl | { |
207 | 4912371f | Blue Swirl | DeviceState *dev; |
208 | 4912371f | Blue Swirl | SysBusDevice *s; |
209 | 4912371f | Blue Swirl | va_list va; |
210 | 4912371f | Blue Swirl | qemu_irq irq; |
211 | 4912371f | Blue Swirl | int n;
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212 | 4912371f | Blue Swirl | |
213 | 4912371f | Blue Swirl | dev = qdev_try_create(NULL, name);
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214 | 4912371f | Blue Swirl | if (!dev) {
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215 | 4912371f | Blue Swirl | return NULL; |
216 | 4912371f | Blue Swirl | } |
217 | 4912371f | Blue Swirl | s = sysbus_from_qdev(dev); |
218 | 4912371f | Blue Swirl | qdev_init_nofail(dev); |
219 | 4912371f | Blue Swirl | if (addr != (target_phys_addr_t)-1) { |
220 | 4912371f | Blue Swirl | sysbus_mmio_map(s, 0, addr);
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221 | 4912371f | Blue Swirl | } |
222 | 4912371f | Blue Swirl | va_start(va, addr); |
223 | 4912371f | Blue Swirl | n = 0;
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224 | 4912371f | Blue Swirl | while (1) { |
225 | aae9460e | Paul Brook | irq = va_arg(va, qemu_irq); |
226 | aae9460e | Paul Brook | if (!irq) {
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227 | aae9460e | Paul Brook | break;
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228 | aae9460e | Paul Brook | } |
229 | aae9460e | Paul Brook | sysbus_connect_irq(s, n, irq); |
230 | aae9460e | Paul Brook | n++; |
231 | aae9460e | Paul Brook | } |
232 | aae9460e | Paul Brook | return dev;
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233 | aae9460e | Paul Brook | } |
234 | cae4956e | Gerd Hoffmann | |
235 | 10c4c98a | Gerd Hoffmann | static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
236 | cae4956e | Gerd Hoffmann | { |
237 | cae4956e | Gerd Hoffmann | SysBusDevice *s = sysbus_from_qdev(dev); |
238 | cae4956e | Gerd Hoffmann | int i;
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239 | cae4956e | Gerd Hoffmann | |
240 | 0fba9fd6 | Dmitry Eremin-Solenikov | monitor_printf(mon, "%*sirq %d\n", indent, "", s->num_irq); |
241 | cae4956e | Gerd Hoffmann | for (i = 0; i < s->num_mmio; i++) { |
242 | cae4956e | Gerd Hoffmann | monitor_printf(mon, "%*smmio " TARGET_FMT_plx "/" TARGET_FMT_plx "\n", |
243 | cae4956e | Gerd Hoffmann | indent, "", s->mmio[i].addr, s->mmio[i].size);
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244 | cae4956e | Gerd Hoffmann | } |
245 | cae4956e | Gerd Hoffmann | } |
246 | c646f74f | Gleb Natapov | |
247 | c646f74f | Gleb Natapov | static char *sysbus_get_fw_dev_path(DeviceState *dev) |
248 | c646f74f | Gleb Natapov | { |
249 | c646f74f | Gleb Natapov | SysBusDevice *s = sysbus_from_qdev(dev); |
250 | c646f74f | Gleb Natapov | char path[40]; |
251 | c646f74f | Gleb Natapov | int off;
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252 | c646f74f | Gleb Natapov | |
253 | c646f74f | Gleb Natapov | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); |
254 | c646f74f | Gleb Natapov | |
255 | c646f74f | Gleb Natapov | if (s->num_mmio) {
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256 | c646f74f | Gleb Natapov | snprintf(path + off, sizeof(path) - off, "@"TARGET_FMT_plx, |
257 | c646f74f | Gleb Natapov | s->mmio[0].addr);
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258 | c646f74f | Gleb Natapov | } else if (s->num_pio) { |
259 | c646f74f | Gleb Natapov | snprintf(path + off, sizeof(path) - off, "@i%04x", s->pio[0]); |
260 | c646f74f | Gleb Natapov | } |
261 | c646f74f | Gleb Natapov | |
262 | c646f74f | Gleb Natapov | return strdup(path);
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263 | c646f74f | Gleb Natapov | } |
264 | 2b985d9c | Avi Kivity | |
265 | 2b985d9c | Avi Kivity | void sysbus_add_memory(SysBusDevice *dev, target_phys_addr_t addr,
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266 | 2b985d9c | Avi Kivity | MemoryRegion *mem) |
267 | 2b985d9c | Avi Kivity | { |
268 | 2b985d9c | Avi Kivity | memory_region_add_subregion(get_system_memory(), addr, mem); |
269 | 2b985d9c | Avi Kivity | } |
270 | 2b985d9c | Avi Kivity | |
271 | d40b2af8 | Avi Kivity | void sysbus_add_memory_overlap(SysBusDevice *dev, target_phys_addr_t addr,
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272 | d40b2af8 | Avi Kivity | MemoryRegion *mem, unsigned priority)
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273 | d40b2af8 | Avi Kivity | { |
274 | d40b2af8 | Avi Kivity | memory_region_add_subregion_overlap(get_system_memory(), addr, mem, |
275 | d40b2af8 | Avi Kivity | priority); |
276 | d40b2af8 | Avi Kivity | } |
277 | d40b2af8 | Avi Kivity | |
278 | 2b985d9c | Avi Kivity | void sysbus_del_memory(SysBusDevice *dev, MemoryRegion *mem)
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279 | 2b985d9c | Avi Kivity | { |
280 | 2b985d9c | Avi Kivity | memory_region_del_subregion(get_system_memory(), mem); |
281 | 2b985d9c | Avi Kivity | } |
282 | 2b985d9c | Avi Kivity | |
283 | 2b985d9c | Avi Kivity | void sysbus_add_io(SysBusDevice *dev, target_phys_addr_t addr,
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284 | 2b985d9c | Avi Kivity | MemoryRegion *mem) |
285 | 2b985d9c | Avi Kivity | { |
286 | 2b985d9c | Avi Kivity | memory_region_add_subregion(get_system_io(), addr, mem); |
287 | 2b985d9c | Avi Kivity | } |
288 | 2b985d9c | Avi Kivity | |
289 | 2b985d9c | Avi Kivity | void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem)
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290 | 2b985d9c | Avi Kivity | { |
291 | 2b985d9c | Avi Kivity | memory_region_del_subregion(get_system_io(), mem); |
292 | 2b985d9c | Avi Kivity | } |