root / hw / sysbus.c @ 13ef70f6
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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 | 0d936928 | Anthony Liguori | static void system_bus_class_init(ObjectClass *klass, void *data) |
28 | 0d936928 | Anthony Liguori | { |
29 | 0d936928 | Anthony Liguori | BusClass *k = BUS_CLASS(klass); |
30 | 0d936928 | Anthony Liguori | |
31 | 0d936928 | Anthony Liguori | k->print_dev = sysbus_dev_print; |
32 | 0d936928 | Anthony Liguori | k->get_fw_dev_path = sysbus_get_fw_dev_path; |
33 | 0d936928 | Anthony Liguori | } |
34 | 0d936928 | Anthony Liguori | |
35 | 0d936928 | Anthony Liguori | static const TypeInfo system_bus_info = { |
36 | 0d936928 | Anthony Liguori | .name = TYPE_SYSTEM_BUS, |
37 | 0d936928 | Anthony Liguori | .parent = TYPE_BUS, |
38 | 0d936928 | Anthony Liguori | .instance_size = sizeof(BusState),
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39 | 0d936928 | Anthony Liguori | .class_init = system_bus_class_init, |
40 | 10c4c98a | Gerd Hoffmann | }; |
41 | 10c4c98a | Gerd Hoffmann | |
42 | aae9460e | Paul Brook | void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq) |
43 | aae9460e | Paul Brook | { |
44 | aae9460e | Paul Brook | assert(n >= 0 && n < dev->num_irq);
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45 | 660f11be | Blue Swirl | dev->irqs[n] = NULL;
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46 | aae9460e | Paul Brook | if (dev->irqp[n]) {
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47 | aae9460e | Paul Brook | *dev->irqp[n] = irq; |
48 | aae9460e | Paul Brook | } |
49 | aae9460e | Paul Brook | } |
50 | aae9460e | Paul Brook | |
51 | c227f099 | Anthony Liguori | void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr) |
52 | aae9460e | Paul Brook | { |
53 | aae9460e | Paul Brook | assert(n >= 0 && n < dev->num_mmio);
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54 | aae9460e | Paul Brook | |
55 | aae9460e | Paul Brook | if (dev->mmio[n].addr == addr) {
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56 | aae9460e | Paul Brook | /* ??? region already mapped here. */
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57 | aae9460e | Paul Brook | return;
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58 | aae9460e | Paul Brook | } |
59 | c227f099 | Anthony Liguori | if (dev->mmio[n].addr != (target_phys_addr_t)-1) { |
60 | aae9460e | Paul Brook | /* Unregister previous mapping. */
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61 | e114fead | Peter Maydell | memory_region_del_subregion(get_system_memory(), dev->mmio[n].memory); |
62 | aae9460e | Paul Brook | } |
63 | aae9460e | Paul Brook | dev->mmio[n].addr = addr; |
64 | e114fead | Peter Maydell | memory_region_add_subregion(get_system_memory(), |
65 | e114fead | Peter Maydell | addr, |
66 | e114fead | Peter Maydell | dev->mmio[n].memory); |
67 | aae9460e | Paul Brook | } |
68 | aae9460e | Paul Brook | |
69 | aae9460e | Paul Brook | |
70 | aae9460e | Paul Brook | /* Request an IRQ source. The actual IRQ object may be populated later. */
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71 | aae9460e | Paul Brook | void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p)
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72 | aae9460e | Paul Brook | { |
73 | aae9460e | Paul Brook | int n;
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74 | aae9460e | Paul Brook | |
75 | aae9460e | Paul Brook | assert(dev->num_irq < QDEV_MAX_IRQ); |
76 | aae9460e | Paul Brook | n = dev->num_irq++; |
77 | aae9460e | Paul Brook | dev->irqp[n] = p; |
78 | aae9460e | Paul Brook | } |
79 | aae9460e | Paul Brook | |
80 | aae9460e | Paul Brook | /* Pass IRQs from a target device. */
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81 | aae9460e | Paul Brook | void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target)
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82 | aae9460e | Paul Brook | { |
83 | aae9460e | Paul Brook | int i;
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84 | aae9460e | Paul Brook | assert(dev->num_irq == 0);
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85 | aae9460e | Paul Brook | dev->num_irq = target->num_irq; |
86 | aae9460e | Paul Brook | for (i = 0; i < dev->num_irq; i++) { |
87 | aae9460e | Paul Brook | dev->irqp[i] = target->irqp[i]; |
88 | aae9460e | Paul Brook | } |
89 | aae9460e | Paul Brook | } |
90 | aae9460e | Paul Brook | |
91 | 750ecd44 | Avi Kivity | void sysbus_init_mmio(SysBusDevice *dev, MemoryRegion *memory)
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92 | ec3bb837 | Avi Kivity | { |
93 | ec3bb837 | Avi Kivity | int n;
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94 | ec3bb837 | Avi Kivity | |
95 | ec3bb837 | Avi Kivity | assert(dev->num_mmio < QDEV_MAX_MMIO); |
96 | ec3bb837 | Avi Kivity | n = dev->num_mmio++; |
97 | ec3bb837 | Avi Kivity | dev->mmio[n].addr = -1;
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98 | ec3bb837 | Avi Kivity | dev->mmio[n].memory = memory; |
99 | ec3bb837 | Avi Kivity | } |
100 | ec3bb837 | Avi Kivity | |
101 | 46c305ef | Peter Maydell | MemoryRegion *sysbus_mmio_get_region(SysBusDevice *dev, int n)
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102 | 46c305ef | Peter Maydell | { |
103 | 46c305ef | Peter Maydell | return dev->mmio[n].memory;
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104 | 46c305ef | Peter Maydell | } |
105 | 46c305ef | Peter Maydell | |
106 | c646f74f | Gleb Natapov | void sysbus_init_ioports(SysBusDevice *dev, pio_addr_t ioport, pio_addr_t size)
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107 | c646f74f | Gleb Natapov | { |
108 | c646f74f | Gleb Natapov | pio_addr_t i; |
109 | c646f74f | Gleb Natapov | |
110 | c646f74f | Gleb Natapov | for (i = 0; i < size; i++) { |
111 | c646f74f | Gleb Natapov | assert(dev->num_pio < QDEV_MAX_PIO); |
112 | c646f74f | Gleb Natapov | dev->pio[dev->num_pio++] = ioport++; |
113 | c646f74f | Gleb Natapov | } |
114 | c646f74f | Gleb Natapov | } |
115 | c646f74f | Gleb Natapov | |
116 | d307af79 | Anthony Liguori | static int sysbus_device_init(DeviceState *dev) |
117 | aae9460e | Paul Brook | { |
118 | 999e12bb | Anthony Liguori | SysBusDevice *sd = SYS_BUS_DEVICE(dev); |
119 | 999e12bb | Anthony Liguori | SysBusDeviceClass *sbc = SYS_BUS_DEVICE_GET_CLASS(sd); |
120 | aae9460e | Paul Brook | |
121 | 999e12bb | Anthony Liguori | return sbc->init(sd);
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122 | aae9460e | Paul Brook | } |
123 | aae9460e | Paul Brook | |
124 | aae9460e | Paul Brook | DeviceState *sysbus_create_varargs(const char *name, |
125 | c227f099 | Anthony Liguori | target_phys_addr_t addr, ...) |
126 | aae9460e | Paul Brook | { |
127 | aae9460e | Paul Brook | DeviceState *dev; |
128 | aae9460e | Paul Brook | SysBusDevice *s; |
129 | aae9460e | Paul Brook | va_list va; |
130 | aae9460e | Paul Brook | qemu_irq irq; |
131 | aae9460e | Paul Brook | int n;
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132 | aae9460e | Paul Brook | |
133 | aae9460e | Paul Brook | dev = qdev_create(NULL, name);
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134 | aae9460e | Paul Brook | s = sysbus_from_qdev(dev); |
135 | e23a1b33 | Markus Armbruster | qdev_init_nofail(dev); |
136 | c227f099 | Anthony Liguori | if (addr != (target_phys_addr_t)-1) { |
137 | aae9460e | Paul Brook | sysbus_mmio_map(s, 0, addr);
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138 | aae9460e | Paul Brook | } |
139 | aae9460e | Paul Brook | va_start(va, addr); |
140 | aae9460e | Paul Brook | n = 0;
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141 | aae9460e | Paul Brook | while (1) { |
142 | 4912371f | Blue Swirl | irq = va_arg(va, qemu_irq); |
143 | 4912371f | Blue Swirl | if (!irq) {
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144 | 4912371f | Blue Swirl | break;
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145 | 4912371f | Blue Swirl | } |
146 | 4912371f | Blue Swirl | sysbus_connect_irq(s, n, irq); |
147 | 4912371f | Blue Swirl | n++; |
148 | 4912371f | Blue Swirl | } |
149 | d0bc5bc3 | Markus Armbruster | va_end(va); |
150 | 4912371f | Blue Swirl | return dev;
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151 | 4912371f | Blue Swirl | } |
152 | 4912371f | Blue Swirl | |
153 | 4912371f | Blue Swirl | DeviceState *sysbus_try_create_varargs(const char *name, |
154 | 4912371f | Blue Swirl | target_phys_addr_t addr, ...) |
155 | 4912371f | Blue Swirl | { |
156 | 4912371f | Blue Swirl | DeviceState *dev; |
157 | 4912371f | Blue Swirl | SysBusDevice *s; |
158 | 4912371f | Blue Swirl | va_list va; |
159 | 4912371f | Blue Swirl | qemu_irq irq; |
160 | 4912371f | Blue Swirl | int n;
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161 | 4912371f | Blue Swirl | |
162 | 4912371f | Blue Swirl | dev = qdev_try_create(NULL, name);
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163 | 4912371f | Blue Swirl | if (!dev) {
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164 | 4912371f | Blue Swirl | return NULL; |
165 | 4912371f | Blue Swirl | } |
166 | 4912371f | Blue Swirl | s = sysbus_from_qdev(dev); |
167 | 4912371f | Blue Swirl | qdev_init_nofail(dev); |
168 | 4912371f | Blue Swirl | if (addr != (target_phys_addr_t)-1) { |
169 | 4912371f | Blue Swirl | sysbus_mmio_map(s, 0, addr);
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170 | 4912371f | Blue Swirl | } |
171 | 4912371f | Blue Swirl | va_start(va, addr); |
172 | 4912371f | Blue Swirl | n = 0;
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173 | 4912371f | Blue Swirl | while (1) { |
174 | aae9460e | Paul Brook | irq = va_arg(va, qemu_irq); |
175 | aae9460e | Paul Brook | if (!irq) {
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176 | aae9460e | Paul Brook | break;
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177 | aae9460e | Paul Brook | } |
178 | aae9460e | Paul Brook | sysbus_connect_irq(s, n, irq); |
179 | aae9460e | Paul Brook | n++; |
180 | aae9460e | Paul Brook | } |
181 | d0bc5bc3 | Markus Armbruster | va_end(va); |
182 | aae9460e | Paul Brook | return dev;
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183 | aae9460e | Paul Brook | } |
184 | cae4956e | Gerd Hoffmann | |
185 | 10c4c98a | Gerd Hoffmann | static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
186 | cae4956e | Gerd Hoffmann | { |
187 | cae4956e | Gerd Hoffmann | SysBusDevice *s = sysbus_from_qdev(dev); |
188 | 3f7f1c80 | Avi Kivity | target_phys_addr_t size; |
189 | cae4956e | Gerd Hoffmann | int i;
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190 | cae4956e | Gerd Hoffmann | |
191 | 0fba9fd6 | Dmitry Eremin-Solenikov | monitor_printf(mon, "%*sirq %d\n", indent, "", s->num_irq); |
192 | cae4956e | Gerd Hoffmann | for (i = 0; i < s->num_mmio; i++) { |
193 | e114fead | Peter Maydell | size = memory_region_size(s->mmio[i].memory); |
194 | cae4956e | Gerd Hoffmann | monitor_printf(mon, "%*smmio " TARGET_FMT_plx "/" TARGET_FMT_plx "\n", |
195 | 3f7f1c80 | Avi Kivity | indent, "", s->mmio[i].addr, size);
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196 | cae4956e | Gerd Hoffmann | } |
197 | cae4956e | Gerd Hoffmann | } |
198 | c646f74f | Gleb Natapov | |
199 | c646f74f | Gleb Natapov | static char *sysbus_get_fw_dev_path(DeviceState *dev) |
200 | c646f74f | Gleb Natapov | { |
201 | c646f74f | Gleb Natapov | SysBusDevice *s = sysbus_from_qdev(dev); |
202 | c646f74f | Gleb Natapov | char path[40]; |
203 | c646f74f | Gleb Natapov | int off;
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204 | c646f74f | Gleb Natapov | |
205 | c646f74f | Gleb Natapov | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); |
206 | c646f74f | Gleb Natapov | |
207 | c646f74f | Gleb Natapov | if (s->num_mmio) {
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208 | c646f74f | Gleb Natapov | snprintf(path + off, sizeof(path) - off, "@"TARGET_FMT_plx, |
209 | c646f74f | Gleb Natapov | s->mmio[0].addr);
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210 | c646f74f | Gleb Natapov | } else if (s->num_pio) { |
211 | c646f74f | Gleb Natapov | snprintf(path + off, sizeof(path) - off, "@i%04x", s->pio[0]); |
212 | c646f74f | Gleb Natapov | } |
213 | c646f74f | Gleb Natapov | |
214 | c646f74f | Gleb Natapov | return strdup(path);
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215 | c646f74f | Gleb Natapov | } |
216 | 2b985d9c | Avi Kivity | |
217 | 2b985d9c | Avi Kivity | void sysbus_add_memory(SysBusDevice *dev, target_phys_addr_t addr,
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218 | 2b985d9c | Avi Kivity | MemoryRegion *mem) |
219 | 2b985d9c | Avi Kivity | { |
220 | 2b985d9c | Avi Kivity | memory_region_add_subregion(get_system_memory(), addr, mem); |
221 | 2b985d9c | Avi Kivity | } |
222 | 2b985d9c | Avi Kivity | |
223 | d40b2af8 | Avi Kivity | void sysbus_add_memory_overlap(SysBusDevice *dev, target_phys_addr_t addr,
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224 | d40b2af8 | Avi Kivity | MemoryRegion *mem, unsigned priority)
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225 | d40b2af8 | Avi Kivity | { |
226 | d40b2af8 | Avi Kivity | memory_region_add_subregion_overlap(get_system_memory(), addr, mem, |
227 | d40b2af8 | Avi Kivity | priority); |
228 | d40b2af8 | Avi Kivity | } |
229 | d40b2af8 | Avi Kivity | |
230 | 2b985d9c | Avi Kivity | void sysbus_del_memory(SysBusDevice *dev, MemoryRegion *mem)
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231 | 2b985d9c | Avi Kivity | { |
232 | 2b985d9c | Avi Kivity | memory_region_del_subregion(get_system_memory(), mem); |
233 | 2b985d9c | Avi Kivity | } |
234 | 2b985d9c | Avi Kivity | |
235 | 2b985d9c | Avi Kivity | void sysbus_add_io(SysBusDevice *dev, target_phys_addr_t addr,
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236 | 2b985d9c | Avi Kivity | MemoryRegion *mem) |
237 | 2b985d9c | Avi Kivity | { |
238 | 2b985d9c | Avi Kivity | memory_region_add_subregion(get_system_io(), addr, mem); |
239 | 2b985d9c | Avi Kivity | } |
240 | 2b985d9c | Avi Kivity | |
241 | 2b985d9c | Avi Kivity | void sysbus_del_io(SysBusDevice *dev, MemoryRegion *mem)
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242 | 2b985d9c | Avi Kivity | { |
243 | 2b985d9c | Avi Kivity | memory_region_del_subregion(get_system_io(), mem); |
244 | 2b985d9c | Avi Kivity | } |
245 | 62ec4832 | Avi Kivity | |
246 | 62ec4832 | Avi Kivity | MemoryRegion *sysbus_address_space(SysBusDevice *dev) |
247 | 62ec4832 | Avi Kivity | { |
248 | 62ec4832 | Avi Kivity | return get_system_memory();
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249 | 62ec4832 | Avi Kivity | } |
250 | 999e12bb | Anthony Liguori | |
251 | 39bffca2 | Anthony Liguori | static void sysbus_device_class_init(ObjectClass *klass, void *data) |
252 | 39bffca2 | Anthony Liguori | { |
253 | 39bffca2 | Anthony Liguori | DeviceClass *k = DEVICE_CLASS(klass); |
254 | 39bffca2 | Anthony Liguori | k->init = sysbus_device_init; |
255 | 0d936928 | Anthony Liguori | k->bus_type = TYPE_SYSTEM_BUS; |
256 | 39bffca2 | Anthony Liguori | } |
257 | 39bffca2 | Anthony Liguori | |
258 | 999e12bb | Anthony Liguori | static TypeInfo sysbus_device_type_info = {
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259 | 999e12bb | Anthony Liguori | .name = TYPE_SYS_BUS_DEVICE, |
260 | 999e12bb | Anthony Liguori | .parent = TYPE_DEVICE, |
261 | 999e12bb | Anthony Liguori | .instance_size = sizeof(SysBusDevice),
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262 | 999e12bb | Anthony Liguori | .abstract = true,
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263 | 999e12bb | Anthony Liguori | .class_size = sizeof(SysBusDeviceClass),
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264 | 39bffca2 | Anthony Liguori | .class_init = sysbus_device_class_init, |
265 | 999e12bb | Anthony Liguori | }; |
266 | 999e12bb | Anthony Liguori | |
267 | 8185d216 | Paolo Bonzini | /* This is a nasty hack to allow passing a NULL bus to qdev_create. */
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268 | 8185d216 | Paolo Bonzini | static BusState *main_system_bus;
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269 | 8185d216 | Paolo Bonzini | |
270 | 8185d216 | Paolo Bonzini | static void main_system_bus_create(void) |
271 | 8185d216 | Paolo Bonzini | { |
272 | 8185d216 | Paolo Bonzini | /* assign main_system_bus before qbus_create_inplace()
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273 | 8185d216 | Paolo Bonzini | * in order to make "if (bus != sysbus_get_default())" work */
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274 | 0d936928 | Anthony Liguori | main_system_bus = g_malloc0(system_bus_info.instance_size); |
275 | 0d936928 | Anthony Liguori | qbus_create_inplace(main_system_bus, TYPE_SYSTEM_BUS, NULL,
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276 | 8185d216 | Paolo Bonzini | "main-system-bus");
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277 | 0d936928 | Anthony Liguori | main_system_bus->glib_allocated = true;
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278 | f968fc68 | Anthony Liguori | object_property_add_child(container_get(qdev_get_machine(), |
279 | f968fc68 | Anthony Liguori | "/unattached"),
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280 | f968fc68 | Anthony Liguori | "sysbus", OBJECT(main_system_bus), NULL); |
281 | 8185d216 | Paolo Bonzini | } |
282 | 8185d216 | Paolo Bonzini | |
283 | 8185d216 | Paolo Bonzini | BusState *sysbus_get_default(void)
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284 | 8185d216 | Paolo Bonzini | { |
285 | 8185d216 | Paolo Bonzini | if (!main_system_bus) {
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286 | 8185d216 | Paolo Bonzini | main_system_bus_create(); |
287 | 8185d216 | Paolo Bonzini | } |
288 | 8185d216 | Paolo Bonzini | return main_system_bus;
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289 | 8185d216 | Paolo Bonzini | } |
290 | 8185d216 | Paolo Bonzini | |
291 | 83f7d43a | Andreas Färber | static void sysbus_register_types(void) |
292 | 999e12bb | Anthony Liguori | { |
293 | 0d936928 | Anthony Liguori | type_register_static(&system_bus_info); |
294 | 999e12bb | Anthony Liguori | type_register_static(&sysbus_device_type_info); |
295 | 999e12bb | Anthony Liguori | } |
296 | 999e12bb | Anthony Liguori | |
297 | 83f7d43a | Andreas Färber | type_init(sysbus_register_types) |