]> git.proxmox.com Git - qemu.git/blame - hw/sysbus.c
Merge remote branch 'kwolf/for-anthony' into staging
[qemu.git] / hw / sysbus.c
CommitLineData
aae9460e
PB
1/*
2 * System (CPU) Bus device support code
3 *
4 * Copyright (c) 2009 CodeSourcery
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
8167ee88 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 */
19
20#include "sysbus.h"
21#include "sysemu.h"
cae4956e 22#include "monitor.h"
aae9460e 23
10c4c98a
GH
24static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent);
25
26struct BusInfo system_bus_info = {
27 .name = "System",
28 .size = sizeof(BusState),
29 .print_dev = sysbus_dev_print,
30};
31
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32void sysbus_connect_irq(SysBusDevice *dev, int n, qemu_irq irq)
33{
34 assert(n >= 0 && n < dev->num_irq);
660f11be 35 dev->irqs[n] = NULL;
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36 if (dev->irqp[n]) {
37 *dev->irqp[n] = irq;
38 }
39}
40
c227f099 41void sysbus_mmio_map(SysBusDevice *dev, int n, target_phys_addr_t addr)
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42{
43 assert(n >= 0 && n < dev->num_mmio);
44
45 if (dev->mmio[n].addr == addr) {
46 /* ??? region already mapped here. */
47 return;
48 }
c227f099 49 if (dev->mmio[n].addr != (target_phys_addr_t)-1) {
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50 /* Unregister previous mapping. */
51 cpu_register_physical_memory(dev->mmio[n].addr, dev->mmio[n].size,
52 IO_MEM_UNASSIGNED);
53 }
54 dev->mmio[n].addr = addr;
55 if (dev->mmio[n].cb) {
56 dev->mmio[n].cb(dev, addr);
57 } else {
58 cpu_register_physical_memory(addr, dev->mmio[n].size,
59 dev->mmio[n].iofunc);
60 }
61}
62
63
64/* Request an IRQ source. The actual IRQ object may be populated later. */
65void sysbus_init_irq(SysBusDevice *dev, qemu_irq *p)
66{
67 int n;
68
69 assert(dev->num_irq < QDEV_MAX_IRQ);
70 n = dev->num_irq++;
71 dev->irqp[n] = p;
72}
73
74/* Pass IRQs from a target device. */
75void sysbus_pass_irq(SysBusDevice *dev, SysBusDevice *target)
76{
77 int i;
78 assert(dev->num_irq == 0);
79 dev->num_irq = target->num_irq;
80 for (i = 0; i < dev->num_irq; i++) {
81 dev->irqp[i] = target->irqp[i];
82 }
83}
84
c227f099 85void sysbus_init_mmio(SysBusDevice *dev, target_phys_addr_t size, int iofunc)
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86{
87 int n;
88
89 assert(dev->num_mmio < QDEV_MAX_MMIO);
90 n = dev->num_mmio++;
91 dev->mmio[n].addr = -1;
92 dev->mmio[n].size = size;
93 dev->mmio[n].iofunc = iofunc;
94}
95
c227f099 96void sysbus_init_mmio_cb(SysBusDevice *dev, target_phys_addr_t size,
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97 mmio_mapfunc cb)
98{
99 int n;
100
101 assert(dev->num_mmio < QDEV_MAX_MMIO);
102 n = dev->num_mmio++;
103 dev->mmio[n].addr = -1;
104 dev->mmio[n].size = size;
105 dev->mmio[n].cb = cb;
106}
107
81a322d4 108static int sysbus_device_init(DeviceState *dev, DeviceInfo *base)
aae9460e 109{
02e2da45 110 SysBusDeviceInfo *info = container_of(base, SysBusDeviceInfo, qdev);
aae9460e 111
81a322d4 112 return info->init(sysbus_from_qdev(dev));
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113}
114
074f2fff 115void sysbus_register_withprop(SysBusDeviceInfo *info)
aae9460e 116{
02e2da45 117 info->qdev.init = sysbus_device_init;
10c4c98a 118 info->qdev.bus_info = &system_bus_info;
02e2da45 119
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120 assert(info->qdev.size >= sizeof(SysBusDevice));
121 qdev_register(&info->qdev);
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122}
123
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124void sysbus_register_dev(const char *name, size_t size, sysbus_initfn init)
125{
126 SysBusDeviceInfo *info;
127
128 info = qemu_mallocz(sizeof(*info));
074f2fff
GH
129 info->qdev.name = qemu_strdup(name);
130 info->qdev.size = size;
1431b6a1 131 info->init = init;
074f2fff 132 sysbus_register_withprop(info);
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133}
134
aae9460e 135DeviceState *sysbus_create_varargs(const char *name,
c227f099 136 target_phys_addr_t addr, ...)
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137{
138 DeviceState *dev;
139 SysBusDevice *s;
140 va_list va;
141 qemu_irq irq;
142 int n;
143
144 dev = qdev_create(NULL, name);
145 s = sysbus_from_qdev(dev);
e23a1b33 146 qdev_init_nofail(dev);
c227f099 147 if (addr != (target_phys_addr_t)-1) {
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148 sysbus_mmio_map(s, 0, addr);
149 }
150 va_start(va, addr);
151 n = 0;
152 while (1) {
153 irq = va_arg(va, qemu_irq);
154 if (!irq) {
155 break;
156 }
157 sysbus_connect_irq(s, n, irq);
158 n++;
159 }
160 return dev;
161}
cae4956e 162
10c4c98a 163static void sysbus_dev_print(Monitor *mon, DeviceState *dev, int indent)
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GH
164{
165 SysBusDevice *s = sysbus_from_qdev(dev);
166 int i;
167
168 for (i = 0; i < s->num_mmio; i++) {
169 monitor_printf(mon, "%*smmio " TARGET_FMT_plx "/" TARGET_FMT_plx "\n",
170 indent, "", s->mmio[i].addr, s->mmio[i].size);
171 }
172}