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19#include "qemu/osdep.h"
20#include "qapi/error.h"
21#include "hw/hw.h"
22#include "monitor/monitor.h"
23#include "hw/sysbus.h"
24#include "sysemu/sysemu.h"
25#include "hw/isa/isa.h"
26#include "hw/i386/pc.h"
27
28static ISABus *isabus;
29
30static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
31static char *isabus_get_fw_dev_path(DeviceState *dev);
32
33static void isa_bus_class_init(ObjectClass *klass, void *data)
34{
35 BusClass *k = BUS_CLASS(klass);
36
37 k->print_dev = isabus_dev_print;
38 k->get_fw_dev_path = isabus_get_fw_dev_path;
39}
40
41static const TypeInfo isa_dma_info = {
42 .name = TYPE_ISADMA,
43 .parent = TYPE_INTERFACE,
44 .class_size = sizeof(IsaDmaClass),
45};
46
47static const TypeInfo isa_bus_info = {
48 .name = TYPE_ISA_BUS,
49 .parent = TYPE_BUS,
50 .instance_size = sizeof(ISABus),
51 .class_init = isa_bus_class_init,
52};
53
54ISABus *isa_bus_new(DeviceState *dev, MemoryRegion* address_space,
55 MemoryRegion *address_space_io, Error **errp)
56{
57 if (isabus) {
58 error_setg(errp, "Can't create a second ISA bus");
59 return NULL;
60 }
61 if (!dev) {
62 dev = qdev_create(NULL, "isabus-bridge");
63 qdev_init_nofail(dev);
64 }
65
66 isabus = ISA_BUS(qbus_create(TYPE_ISA_BUS, dev, NULL));
67 isabus->address_space = address_space;
68 isabus->address_space_io = address_space_io;
69 return isabus;
70}
71
72void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
73{
74 bus->irqs = irqs;
75}
76
77
78
79
80
81
82
83qemu_irq isa_get_irq(ISADevice *dev, int isairq)
84{
85 assert(!dev || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) == isabus);
86 if (isairq < 0 || isairq > 15) {
87 hw_error("isa irq %d invalid", isairq);
88 }
89 return isabus->irqs[isairq];
90}
91
92void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq)
93{
94 assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
95 dev->isairq[dev->nirqs] = isairq;
96 *p = isa_get_irq(dev, isairq);
97 dev->nirqs++;
98}
99
100void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16)
101{
102 assert(bus && dma8 && dma16);
103 assert(!bus->dma[0] && !bus->dma[1]);
104 bus->dma[0] = dma8;
105 bus->dma[1] = dma16;
106}
107
108IsaDma *isa_get_dma(ISABus *bus, int nchan)
109{
110 assert(bus);
111 return bus->dma[nchan > 3 ? 1 : 0];
112}
113
114static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport)
115{
116 if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) {
117 dev->ioport_id = ioport;
118 }
119}
120
121void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
122{
123 memory_region_add_subregion(isabus->address_space_io, start, io);
124 isa_init_ioport(dev, start);
125}
126
127void isa_register_portio_list(ISADevice *dev, uint16_t start,
128 const MemoryRegionPortio *pio_start,
129 void *opaque, const char *name)
130{
131 PortioList piolist;
132
133
134
135
136 isa_init_ioport(dev, start);
137
138
139
140
141
142
143 portio_list_init(&piolist, OBJECT(dev), pio_start, opaque, name);
144 portio_list_add(&piolist, isabus->address_space_io, start);
145}
146
147static void isa_device_init(Object *obj)
148{
149 ISADevice *dev = ISA_DEVICE(obj);
150
151 dev->isairq[0] = -1;
152 dev->isairq[1] = -1;
153}
154
155ISADevice *isa_create(ISABus *bus, const char *name)
156{
157 DeviceState *dev;
158
159 dev = qdev_create(BUS(bus), name);
160 return ISA_DEVICE(dev);
161}
162
163ISADevice *isa_try_create(ISABus *bus, const char *name)
164{
165 DeviceState *dev;
166
167 dev = qdev_try_create(BUS(bus), name);
168 return ISA_DEVICE(dev);
169}
170
171ISADevice *isa_create_simple(ISABus *bus, const char *name)
172{
173 ISADevice *dev;
174
175 dev = isa_create(bus, name);
176 qdev_init_nofail(DEVICE(dev));
177 return dev;
178}
179
180ISADevice *isa_vga_init(ISABus *bus)
181{
182 switch (vga_interface_type) {
183 case VGA_CIRRUS:
184 return isa_create_simple(bus, "isa-cirrus-vga");
185 case VGA_QXL:
186 fprintf(stderr, "%s: qxl: no PCI bus\n", __func__);
187 return NULL;
188 case VGA_STD:
189 return isa_create_simple(bus, "isa-vga");
190 case VGA_VMWARE:
191 fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __func__);
192 return NULL;
193 case VGA_VIRTIO:
194 fprintf(stderr, "%s: virtio-vga: no PCI bus\n", __func__);
195 return NULL;
196 case VGA_NONE:
197 default:
198 return NULL;
199 }
200}
201
202static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
203{
204 ISADevice *d = ISA_DEVICE(dev);
205
206 if (d->isairq[1] != -1) {
207 monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
208 d->isairq[0], d->isairq[1]);
209 } else if (d->isairq[0] != -1) {
210 monitor_printf(mon, "%*sisa irq %d\n", indent, "",
211 d->isairq[0]);
212 }
213}
214
215static void isabus_bridge_class_init(ObjectClass *klass, void *data)
216{
217 DeviceClass *dc = DEVICE_CLASS(klass);
218
219 dc->fw_name = "isa";
220}
221
222static const TypeInfo isabus_bridge_info = {
223 .name = "isabus-bridge",
224 .parent = TYPE_SYS_BUS_DEVICE,
225 .instance_size = sizeof(SysBusDevice),
226 .class_init = isabus_bridge_class_init,
227};
228
229static void isa_device_class_init(ObjectClass *klass, void *data)
230{
231 DeviceClass *k = DEVICE_CLASS(klass);
232 k->bus_type = TYPE_ISA_BUS;
233}
234
235static const TypeInfo isa_device_type_info = {
236 .name = TYPE_ISA_DEVICE,
237 .parent = TYPE_DEVICE,
238 .instance_size = sizeof(ISADevice),
239 .instance_init = isa_device_init,
240 .abstract = true,
241 .class_size = sizeof(ISADeviceClass),
242 .class_init = isa_device_class_init,
243};
244
245static void isabus_register_types(void)
246{
247 type_register_static(&isa_dma_info);
248 type_register_static(&isa_bus_info);
249 type_register_static(&isabus_bridge_info);
250 type_register_static(&isa_device_type_info);
251}
252
253static char *isabus_get_fw_dev_path(DeviceState *dev)
254{
255 ISADevice *d = ISA_DEVICE(dev);
256 char path[40];
257 int off;
258
259 off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
260 if (d->ioport_id) {
261 snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
262 }
263
264 return g_strdup(path);
265}
266
267MemoryRegion *isa_address_space(ISADevice *dev)
268{
269 if (dev) {
270 return isa_bus_from_device(dev)->address_space;
271 }
272
273 return isabus->address_space;
274}
275
276MemoryRegion *isa_address_space_io(ISADevice *dev)
277{
278 if (dev) {
279 return isa_bus_from_device(dev)->address_space_io;
280 }
281
282 return isabus->address_space_io;
283}
284
285type_init(isabus_register_types)
286
287static void parallel_init(ISABus *bus, int index, CharDriverState *chr)
288{
289 DeviceState *dev;
290 ISADevice *isadev;
291
292 isadev = isa_create(bus, "isa-parallel");
293 dev = DEVICE(isadev);
294 qdev_prop_set_uint32(dev, "index", index);
295 qdev_prop_set_chr(dev, "chardev", chr);
296 qdev_init_nofail(dev);
297}
298
299void parallel_hds_isa_init(ISABus *bus, int n)
300{
301 int i;
302
303 assert(n <= MAX_PARALLEL_PORTS);
304
305 for (i = 0; i < n; i++) {
306 if (parallel_hds[i]) {
307 parallel_init(bus, i, parallel_hds[i]);
308 }
309 }
310}
311