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