root / hw / isa-bus.c @ a8170e5e
History | View | Annotate | Download (6.9 kB)
1 |
/*
|
---|---|
2 |
* isa bus support for qdev.
|
3 |
*
|
4 |
* Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
|
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
|
17 |
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
18 |
*/
|
19 |
#include "hw.h" |
20 |
#include "monitor.h" |
21 |
#include "sysbus.h" |
22 |
#include "sysemu.h" |
23 |
#include "isa.h" |
24 |
#include "exec-memory.h" |
25 |
|
26 |
static ISABus *isabus;
|
27 |
hwaddr isa_mem_base = 0;
|
28 |
|
29 |
static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
30 |
static char *isabus_get_fw_dev_path(DeviceState *dev); |
31 |
|
32 |
static void isa_bus_class_init(ObjectClass *klass, void *data) |
33 |
{ |
34 |
BusClass *k = BUS_CLASS(klass); |
35 |
|
36 |
k->print_dev = isabus_dev_print; |
37 |
k->get_fw_dev_path = isabus_get_fw_dev_path; |
38 |
} |
39 |
|
40 |
static const TypeInfo isa_bus_info = { |
41 |
.name = TYPE_ISA_BUS, |
42 |
.parent = TYPE_BUS, |
43 |
.instance_size = sizeof(ISABus),
|
44 |
.class_init = isa_bus_class_init, |
45 |
}; |
46 |
|
47 |
ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io) |
48 |
{ |
49 |
if (isabus) {
|
50 |
fprintf(stderr, "Can't create a second ISA bus\n");
|
51 |
return NULL; |
52 |
} |
53 |
if (NULL == dev) { |
54 |
dev = qdev_create(NULL, "isabus-bridge"); |
55 |
qdev_init_nofail(dev); |
56 |
} |
57 |
|
58 |
isabus = FROM_QBUS(ISABus, qbus_create(TYPE_ISA_BUS, dev, NULL));
|
59 |
isabus->address_space_io = address_space_io; |
60 |
return isabus;
|
61 |
} |
62 |
|
63 |
void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
|
64 |
{ |
65 |
if (!bus) {
|
66 |
hw_error("Can't set isa irqs with no isa bus present.");
|
67 |
} |
68 |
bus->irqs = irqs; |
69 |
} |
70 |
|
71 |
/*
|
72 |
* isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
|
73 |
*
|
74 |
* This function is only for special cases such as the 'ferr', and
|
75 |
* temporary use for normal devices until they are converted to qdev.
|
76 |
*/
|
77 |
qemu_irq isa_get_irq(ISADevice *dev, int isairq)
|
78 |
{ |
79 |
assert(!dev || DO_UPCAST(ISABus, qbus, dev->qdev.parent_bus) == isabus); |
80 |
if (isairq < 0 || isairq > 15) { |
81 |
hw_error("isa irq %d invalid", isairq);
|
82 |
} |
83 |
return isabus->irqs[isairq];
|
84 |
} |
85 |
|
86 |
void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq) |
87 |
{ |
88 |
assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); |
89 |
dev->isairq[dev->nirqs] = isairq; |
90 |
*p = isa_get_irq(dev, isairq); |
91 |
dev->nirqs++; |
92 |
} |
93 |
|
94 |
static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport) |
95 |
{ |
96 |
if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) { |
97 |
dev->ioport_id = ioport; |
98 |
} |
99 |
} |
100 |
|
101 |
void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
|
102 |
{ |
103 |
memory_region_add_subregion(isabus->address_space_io, start, io); |
104 |
isa_init_ioport(dev, start); |
105 |
} |
106 |
|
107 |
void isa_register_portio_list(ISADevice *dev, uint16_t start,
|
108 |
const MemoryRegionPortio *pio_start,
|
109 |
void *opaque, const char *name) |
110 |
{ |
111 |
PortioList *piolist = g_new(PortioList, 1);
|
112 |
|
113 |
/* START is how we should treat DEV, regardless of the actual
|
114 |
contents of the portio array. This is how the old code
|
115 |
actually handled e.g. the FDC device. */
|
116 |
isa_init_ioport(dev, start); |
117 |
|
118 |
portio_list_init(piolist, pio_start, opaque, name); |
119 |
portio_list_add(piolist, isabus->address_space_io, start); |
120 |
} |
121 |
|
122 |
static int isa_qdev_init(DeviceState *qdev) |
123 |
{ |
124 |
ISADevice *dev = ISA_DEVICE(qdev); |
125 |
ISADeviceClass *klass = ISA_DEVICE_GET_CLASS(dev); |
126 |
|
127 |
dev->isairq[0] = -1; |
128 |
dev->isairq[1] = -1; |
129 |
|
130 |
if (klass->init) {
|
131 |
return klass->init(dev);
|
132 |
} |
133 |
|
134 |
return 0; |
135 |
} |
136 |
|
137 |
ISADevice *isa_create(ISABus *bus, const char *name) |
138 |
{ |
139 |
DeviceState *dev; |
140 |
|
141 |
if (!bus) {
|
142 |
hw_error("Tried to create isa device %s with no isa bus present.",
|
143 |
name); |
144 |
} |
145 |
dev = qdev_create(&bus->qbus, name); |
146 |
return ISA_DEVICE(dev);
|
147 |
} |
148 |
|
149 |
ISADevice *isa_try_create(ISABus *bus, const char *name) |
150 |
{ |
151 |
DeviceState *dev; |
152 |
|
153 |
if (!bus) {
|
154 |
hw_error("Tried to create isa device %s with no isa bus present.",
|
155 |
name); |
156 |
} |
157 |
dev = qdev_try_create(&bus->qbus, name); |
158 |
return ISA_DEVICE(dev);
|
159 |
} |
160 |
|
161 |
ISADevice *isa_create_simple(ISABus *bus, const char *name) |
162 |
{ |
163 |
ISADevice *dev; |
164 |
|
165 |
dev = isa_create(bus, name); |
166 |
qdev_init_nofail(&dev->qdev); |
167 |
return dev;
|
168 |
} |
169 |
|
170 |
ISADevice *isa_vga_init(ISABus *bus) |
171 |
{ |
172 |
switch (vga_interface_type) {
|
173 |
case VGA_CIRRUS:
|
174 |
return isa_create_simple(bus, "isa-cirrus-vga"); |
175 |
case VGA_QXL:
|
176 |
fprintf(stderr, "%s: qxl: no PCI bus\n", __func__);
|
177 |
return NULL; |
178 |
case VGA_STD:
|
179 |
return isa_create_simple(bus, "isa-vga"); |
180 |
case VGA_VMWARE:
|
181 |
fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __func__);
|
182 |
return NULL; |
183 |
case VGA_NONE:
|
184 |
default:
|
185 |
return NULL; |
186 |
} |
187 |
} |
188 |
|
189 |
static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
190 |
{ |
191 |
ISADevice *d = ISA_DEVICE(dev); |
192 |
|
193 |
if (d->isairq[1] != -1) { |
194 |
monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "", |
195 |
d->isairq[0], d->isairq[1]); |
196 |
} else if (d->isairq[0] != -1) { |
197 |
monitor_printf(mon, "%*sisa irq %d\n", indent, "", |
198 |
d->isairq[0]);
|
199 |
} |
200 |
} |
201 |
|
202 |
static int isabus_bridge_init(SysBusDevice *dev) |
203 |
{ |
204 |
/* nothing */
|
205 |
return 0; |
206 |
} |
207 |
|
208 |
static void isabus_bridge_class_init(ObjectClass *klass, void *data) |
209 |
{ |
210 |
DeviceClass *dc = DEVICE_CLASS(klass); |
211 |
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
212 |
|
213 |
k->init = isabus_bridge_init; |
214 |
dc->fw_name = "isa";
|
215 |
dc->no_user = 1;
|
216 |
} |
217 |
|
218 |
static TypeInfo isabus_bridge_info = {
|
219 |
.name = "isabus-bridge",
|
220 |
.parent = TYPE_SYS_BUS_DEVICE, |
221 |
.instance_size = sizeof(SysBusDevice),
|
222 |
.class_init = isabus_bridge_class_init, |
223 |
}; |
224 |
|
225 |
static void isa_device_class_init(ObjectClass *klass, void *data) |
226 |
{ |
227 |
DeviceClass *k = DEVICE_CLASS(klass); |
228 |
k->init = isa_qdev_init; |
229 |
k->bus_type = TYPE_ISA_BUS; |
230 |
} |
231 |
|
232 |
static TypeInfo isa_device_type_info = {
|
233 |
.name = TYPE_ISA_DEVICE, |
234 |
.parent = TYPE_DEVICE, |
235 |
.instance_size = sizeof(ISADevice),
|
236 |
.abstract = true,
|
237 |
.class_size = sizeof(ISADeviceClass),
|
238 |
.class_init = isa_device_class_init, |
239 |
}; |
240 |
|
241 |
static void isabus_register_types(void) |
242 |
{ |
243 |
type_register_static(&isa_bus_info); |
244 |
type_register_static(&isabus_bridge_info); |
245 |
type_register_static(&isa_device_type_info); |
246 |
} |
247 |
|
248 |
static char *isabus_get_fw_dev_path(DeviceState *dev) |
249 |
{ |
250 |
ISADevice *d = (ISADevice*)dev; |
251 |
char path[40]; |
252 |
int off;
|
253 |
|
254 |
off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); |
255 |
if (d->ioport_id) {
|
256 |
snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id); |
257 |
} |
258 |
|
259 |
return g_strdup(path);
|
260 |
} |
261 |
|
262 |
MemoryRegion *isa_address_space(ISADevice *dev) |
263 |
{ |
264 |
return get_system_memory();
|
265 |
} |
266 |
|
267 |
type_init(isabus_register_types) |