root / hw / sysbus.c @ f6dc18df
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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 | aae9460e | Paul Brook | #include "sysemu.h" |
22 | cae4956e | Gerd Hoffmann | #include "monitor.h" |
23 | aae9460e | Paul Brook | |
24 | 10c4c98a | Gerd Hoffmann | static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
25 | 10c4c98a | Gerd Hoffmann | |
26 | 10c4c98a | Gerd Hoffmann | struct BusInfo system_bus_info = {
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27 | 10c4c98a | Gerd Hoffmann | .name = "System",
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28 | 10c4c98a | Gerd Hoffmann | .size = sizeof(BusState),
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29 | 10c4c98a | Gerd Hoffmann | .print_dev = sysbus_dev_print, |
30 | 10c4c98a | Gerd Hoffmann | }; |
31 | 10c4c98a | Gerd Hoffmann | |
32 | aae9460e | Paul Brook | void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq) |
33 | aae9460e | Paul Brook | { |
34 | aae9460e | Paul Brook | assert(n >= 0 && n < dev->num_irq);
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35 | 660f11be | Blue Swirl | dev->irqs[n] = NULL;
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36 | aae9460e | Paul Brook | if (dev->irqp[n]) {
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37 | aae9460e | Paul Brook | *dev->irqp[n] = irq; |
38 | aae9460e | Paul Brook | } |
39 | aae9460e | Paul Brook | } |
40 | aae9460e | Paul Brook | |
41 | c227f099 | Anthony Liguori | void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr) |
42 | aae9460e | Paul Brook | { |
43 | aae9460e | Paul Brook | assert(n >= 0 && n < dev->num_mmio);
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44 | aae9460e | Paul Brook | |
45 | aae9460e | Paul Brook | if (dev->mmio[n].addr == addr) {
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46 | aae9460e | Paul Brook | /* ??? region already mapped here. */
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47 | aae9460e | Paul Brook | return;
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48 | aae9460e | Paul Brook | } |
49 | c227f099 | Anthony Liguori | if (dev->mmio[n].addr != (target_phys_addr_t)-1) { |
50 | aae9460e | Paul Brook | /* Unregister previous mapping. */
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51 | aae9460e | Paul Brook | cpu_register_physical_memory(dev->mmio[n].addr, dev->mmio[n].size, |
52 | aae9460e | Paul Brook | IO_MEM_UNASSIGNED); |
53 | aae9460e | Paul Brook | } |
54 | aae9460e | Paul Brook | dev->mmio[n].addr = addr; |
55 | aae9460e | Paul Brook | if (dev->mmio[n].cb) {
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56 | aae9460e | Paul Brook | dev->mmio[n].cb(dev, addr); |
57 | aae9460e | Paul Brook | } else {
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58 | aae9460e | Paul Brook | cpu_register_physical_memory(addr, dev->mmio[n].size, |
59 | aae9460e | Paul Brook | dev->mmio[n].iofunc); |
60 | aae9460e | Paul Brook | } |
61 | aae9460e | Paul Brook | } |
62 | aae9460e | Paul Brook | |
63 | aae9460e | Paul Brook | |
64 | aae9460e | Paul Brook | /* Request an IRQ source. The actual IRQ object may be populated later. */
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65 | aae9460e | Paul Brook | void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p)
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66 | aae9460e | Paul Brook | { |
67 | aae9460e | Paul Brook | int n;
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68 | aae9460e | Paul Brook | |
69 | aae9460e | Paul Brook | assert(dev->num_irq < QDEV_MAX_IRQ); |
70 | aae9460e | Paul Brook | n = dev->num_irq++; |
71 | aae9460e | Paul Brook | dev->irqp[n] = p; |
72 | aae9460e | Paul Brook | } |
73 | aae9460e | Paul Brook | |
74 | aae9460e | Paul Brook | /* Pass IRQs from a target device. */
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75 | aae9460e | Paul Brook | void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target)
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76 | aae9460e | Paul Brook | { |
77 | aae9460e | Paul Brook | int i;
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78 | aae9460e | Paul Brook | assert(dev->num_irq == 0);
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79 | aae9460e | Paul Brook | dev->num_irq = target->num_irq; |
80 | aae9460e | Paul Brook | for (i = 0; i < dev->num_irq; i++) { |
81 | aae9460e | Paul Brook | dev->irqp[i] = target->irqp[i]; |
82 | aae9460e | Paul Brook | } |
83 | aae9460e | Paul Brook | } |
84 | aae9460e | Paul Brook | |
85 | c227f099 | Anthony Liguori | void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size, int iofunc) |
86 | aae9460e | Paul Brook | { |
87 | aae9460e | Paul Brook | int n;
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88 | aae9460e | Paul Brook | |
89 | aae9460e | Paul Brook | assert(dev->num_mmio < QDEV_MAX_MMIO); |
90 | aae9460e | Paul Brook | n = dev->num_mmio++; |
91 | aae9460e | Paul Brook | dev->mmio[n].addr = -1;
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92 | aae9460e | Paul Brook | dev->mmio[n].size = size; |
93 | aae9460e | Paul Brook | dev->mmio[n].iofunc = iofunc; |
94 | aae9460e | Paul Brook | } |
95 | aae9460e | Paul Brook | |
96 | c227f099 | Anthony Liguori | void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size,
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97 | aae9460e | Paul Brook | mmio_mapfunc cb) |
98 | aae9460e | Paul Brook | { |
99 | aae9460e | Paul Brook | int n;
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100 | aae9460e | Paul Brook | |
101 | aae9460e | Paul Brook | assert(dev->num_mmio < QDEV_MAX_MMIO); |
102 | aae9460e | Paul Brook | n = dev->num_mmio++; |
103 | aae9460e | Paul Brook | dev->mmio[n].addr = -1;
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104 | aae9460e | Paul Brook | dev->mmio[n].size = size; |
105 | aae9460e | Paul Brook | dev->mmio[n].cb = cb; |
106 | aae9460e | Paul Brook | } |
107 | aae9460e | Paul Brook | |
108 | 81a322d4 | Gerd Hoffmann | static int sysbus_device_init(DeviceState *dev, DeviceInfo *base) |
109 | aae9460e | Paul Brook | { |
110 | 02e2da45 | Paul Brook | SysBusDeviceInfo *info = container_of(base, SysBusDeviceInfo, qdev); |
111 | aae9460e | Paul Brook | |
112 | 81a322d4 | Gerd Hoffmann | return info->init(sysbus_from_qdev(dev));
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113 | aae9460e | Paul Brook | } |
114 | aae9460e | Paul Brook | |
115 | 074f2fff | Gerd Hoffmann | void sysbus_register_withprop(SysBusDeviceInfo *info)
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116 | aae9460e | Paul Brook | { |
117 | 02e2da45 | Paul Brook | info->qdev.init = sysbus_device_init; |
118 | 10c4c98a | Gerd Hoffmann | info->qdev.bus_info = &system_bus_info; |
119 | 02e2da45 | Paul Brook | |
120 | 074f2fff | Gerd Hoffmann | assert(info->qdev.size >= sizeof(SysBusDevice));
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121 | 074f2fff | Gerd Hoffmann | qdev_register(&info->qdev); |
122 | aae9460e | Paul Brook | } |
123 | aae9460e | Paul Brook | |
124 | 1431b6a1 | Paul Brook | void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init) |
125 | 1431b6a1 | Paul Brook | { |
126 | 1431b6a1 | Paul Brook | SysBusDeviceInfo *info; |
127 | 1431b6a1 | Paul Brook | |
128 | 1431b6a1 | Paul Brook | info = qemu_mallocz(sizeof(*info));
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129 | 074f2fff | Gerd Hoffmann | info->qdev.name = qemu_strdup(name); |
130 | 074f2fff | Gerd Hoffmann | info->qdev.size = size; |
131 | 1431b6a1 | Paul Brook | info->init = init; |
132 | 074f2fff | Gerd Hoffmann | sysbus_register_withprop(info); |
133 | 1431b6a1 | Paul Brook | } |
134 | 1431b6a1 | Paul Brook | |
135 | aae9460e | Paul Brook | DeviceState *sysbus_create_varargs(const char *name, |
136 | c227f099 | Anthony Liguori | target_phys_addr_t addr, ...) |
137 | aae9460e | Paul Brook | { |
138 | aae9460e | Paul Brook | DeviceState *dev; |
139 | aae9460e | Paul Brook | SysBusDevice *s; |
140 | aae9460e | Paul Brook | va_list va; |
141 | aae9460e | Paul Brook | qemu_irq irq; |
142 | aae9460e | Paul Brook | int n;
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143 | aae9460e | Paul Brook | |
144 | aae9460e | Paul Brook | dev = qdev_create(NULL, name);
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145 | aae9460e | Paul Brook | s = sysbus_from_qdev(dev); |
146 | e23a1b33 | Markus Armbruster | qdev_init_nofail(dev); |
147 | c227f099 | Anthony Liguori | if (addr != (target_phys_addr_t)-1) { |
148 | aae9460e | Paul Brook | sysbus_mmio_map(s, 0, addr);
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149 | aae9460e | Paul Brook | } |
150 | aae9460e | Paul Brook | va_start(va, addr); |
151 | aae9460e | Paul Brook | n = 0;
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152 | aae9460e | Paul Brook | while (1) { |
153 | aae9460e | Paul Brook | irq = va_arg(va, qemu_irq); |
154 | aae9460e | Paul Brook | if (!irq) {
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155 | aae9460e | Paul Brook | break;
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156 | aae9460e | Paul Brook | } |
157 | aae9460e | Paul Brook | sysbus_connect_irq(s, n, irq); |
158 | aae9460e | Paul Brook | n++; |
159 | aae9460e | Paul Brook | } |
160 | aae9460e | Paul Brook | return dev;
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161 | aae9460e | Paul Brook | } |
162 | cae4956e | Gerd Hoffmann | |
163 | 10c4c98a | Gerd Hoffmann | static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
164 | cae4956e | Gerd Hoffmann | { |
165 | cae4956e | Gerd Hoffmann | SysBusDevice *s = sysbus_from_qdev(dev); |
166 | cae4956e | Gerd Hoffmann | int i;
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167 | cae4956e | Gerd Hoffmann | |
168 | cae4956e | Gerd Hoffmann | for (i = 0; i < s->num_mmio; i++) { |
169 | cae4956e | Gerd Hoffmann | monitor_printf(mon, "%*smmio " TARGET_FMT_plx "/" TARGET_FMT_plx "\n", |
170 | cae4956e | Gerd Hoffmann | indent, "", s->mmio[i].addr, s->mmio[i].size);
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171 | cae4956e | Gerd Hoffmann | } |
172 | cae4956e | Gerd Hoffmann | } |