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Commit | Line | Data |
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f915a115 GH |
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 | */ | |
0b8fa32f | 19 | |
0430891c | 20 | #include "qemu/osdep.h" |
1081ed2c | 21 | #include "qemu/error-report.h" |
0b8fa32f | 22 | #include "qemu/module.h" |
da34e65c | 23 | #include "qapi/error.h" |
83c9f4ca | 24 | #include "hw/hw.h" |
83c9089e | 25 | #include "monitor/monitor.h" |
83c9f4ca | 26 | #include "hw/sysbus.h" |
9c17d615 | 27 | #include "sysemu/sysemu.h" |
0d09e41a | 28 | #include "hw/isa/isa.h" |
f915a115 | 29 | |
f915a115 GH |
30 | static ISABus *isabus; |
31 | ||
2091ba23 | 32 | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
6a26e119 | 33 | static char *isabus_get_fw_dev_path(DeviceState *dev); |
2091ba23 | 34 | |
0d936928 AL |
35 | static void isa_bus_class_init(ObjectClass *klass, void *data) |
36 | { | |
37 | BusClass *k = BUS_CLASS(klass); | |
38 | ||
39 | k->print_dev = isabus_dev_print; | |
40 | k->get_fw_dev_path = isabus_get_fw_dev_path; | |
41 | } | |
42 | ||
5484f30b HP |
43 | static const TypeInfo isa_dma_info = { |
44 | .name = TYPE_ISADMA, | |
45 | .parent = TYPE_INTERFACE, | |
46 | .class_size = sizeof(IsaDmaClass), | |
47 | }; | |
48 | ||
0d936928 AL |
49 | static const TypeInfo isa_bus_info = { |
50 | .name = TYPE_ISA_BUS, | |
51 | .parent = TYPE_BUS, | |
52 | .instance_size = sizeof(ISABus), | |
53 | .class_init = isa_bus_class_init, | |
f915a115 GH |
54 | }; |
55 | ||
bb2ed009 | 56 | ISABus *isa_bus_new(DeviceState *dev, MemoryRegion* address_space, |
d10e5432 | 57 | MemoryRegion *address_space_io, Error **errp) |
f915a115 GH |
58 | { |
59 | if (isabus) { | |
d10e5432 | 60 | error_setg(errp, "Can't create a second ISA bus"); |
f915a115 GH |
61 | return NULL; |
62 | } | |
337a3e5c | 63 | if (!dev) { |
2091ba23 | 64 | dev = qdev_create(NULL, "isabus-bridge"); |
e23a1b33 | 65 | qdev_init_nofail(dev); |
2091ba23 | 66 | } |
f915a115 | 67 | |
2ae0e48d | 68 | isabus = ISA_BUS(qbus_create(TYPE_ISA_BUS, dev, NULL)); |
bb2ed009 | 69 | isabus->address_space = address_space; |
c2d0d012 | 70 | isabus->address_space_io = address_space_io; |
f915a115 GH |
71 | return isabus; |
72 | } | |
73 | ||
48a18b3c | 74 | void isa_bus_irqs(ISABus *bus, qemu_irq *irqs) |
f915a115 | 75 | { |
d3c68e4f | 76 | bus->irqs = irqs; |
2091ba23 GH |
77 | } |
78 | ||
3a38d437 | 79 | /* |
ee951a37 | 80 | * isa_get_irq() returns the corresponding qemu_irq entry for the i8259. |
3a38d437 JS |
81 | * |
82 | * This function is only for special cases such as the 'ferr', and | |
83 | * temporary use for normal devices until they are converted to qdev. | |
84 | */ | |
3c29e188 | 85 | qemu_irq isa_get_irq(ISADevice *dev, unsigned isairq) |
3a38d437 | 86 | { |
2ae0e48d | 87 | assert(!dev || ISA_BUS(qdev_get_parent_bus(DEVICE(dev))) == isabus); |
3c29e188 | 88 | if (isairq >= ISA_NUM_IRQS) { |
74782223 | 89 | hw_error("isa irq %d invalid", isairq); |
3a38d437 | 90 | } |
3a38d437 JS |
91 | return isabus->irqs[isairq]; |
92 | } | |
93 | ||
3c29e188 | 94 | void isa_init_irq(ISADevice *dev, qemu_irq *p, unsigned isairq) |
f915a115 | 95 | { |
2e15e23b | 96 | assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); |
3c29e188 PB |
97 | if (isairq >= ISA_NUM_IRQS) { |
98 | hw_error("isa irq %d invalid", isairq); | |
99 | } | |
2e15e23b | 100 | dev->isairq[dev->nirqs] = isairq; |
48a18b3c | 101 | *p = isa_get_irq(dev, isairq); |
f915a115 GH |
102 | dev->nirqs++; |
103 | } | |
104 | ||
3c29e188 | 105 | void isa_connect_gpio_out(ISADevice *isadev, int gpioirq, unsigned isairq) |
25026303 EV |
106 | { |
107 | qemu_irq irq; | |
108 | isa_init_irq(isadev, &irq, isairq); | |
109 | qdev_connect_gpio_out(DEVICE(isadev), gpioirq, irq); | |
110 | } | |
111 | ||
5484f30b HP |
112 | void isa_bus_dma(ISABus *bus, IsaDma *dma8, IsaDma *dma16) |
113 | { | |
114 | assert(bus && dma8 && dma16); | |
115 | assert(!bus->dma[0] && !bus->dma[1]); | |
116 | bus->dma[0] = dma8; | |
117 | bus->dma[1] = dma16; | |
118 | } | |
119 | ||
120 | IsaDma *isa_get_dma(ISABus *bus, int nchan) | |
121 | { | |
122 | assert(bus); | |
123 | return bus->dma[nchan > 3 ? 1 : 0]; | |
124 | } | |
125 | ||
0d959524 | 126 | static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport) |
dee41d58 | 127 | { |
0d959524 RH |
128 | if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) { |
129 | dev->ioport_id = ioport; | |
dee41d58 | 130 | } |
dee41d58 GN |
131 | } |
132 | ||
78e20593 RH |
133 | void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start) |
134 | { | |
135 | memory_region_add_subregion(isabus->address_space_io, start, io); | |
0d959524 | 136 | isa_init_ioport(dev, start); |
78e20593 RH |
137 | } |
138 | ||
e305a165 MAL |
139 | void isa_register_portio_list(ISADevice *dev, |
140 | PortioList *piolist, uint16_t start, | |
d7500734 AK |
141 | const MemoryRegionPortio *pio_start, |
142 | void *opaque, const char *name) | |
143 | { | |
e305a165 | 144 | assert(piolist && !piolist->owner); |
d7500734 AK |
145 | |
146 | /* START is how we should treat DEV, regardless of the actual | |
147 | contents of the portio array. This is how the old code | |
148 | actually handled e.g. the FDC device. */ | |
0d959524 | 149 | isa_init_ioport(dev, start); |
d7500734 | 150 | |
e305a165 MAL |
151 | portio_list_init(piolist, OBJECT(dev), pio_start, opaque, name); |
152 | portio_list_add(piolist, isabus->address_space_io, start); | |
d7500734 AK |
153 | } |
154 | ||
c538ca66 AF |
155 | static void isa_device_init(Object *obj) |
156 | { | |
157 | ISADevice *dev = ISA_DEVICE(obj); | |
158 | ||
159 | dev->isairq[0] = -1; | |
160 | dev->isairq[1] = -1; | |
161 | } | |
162 | ||
48a18b3c | 163 | ISADevice *isa_create(ISABus *bus, const char *name) |
f915a115 GH |
164 | { |
165 | DeviceState *dev; | |
f915a115 | 166 | |
2ae0e48d | 167 | dev = qdev_create(BUS(bus), name); |
8f04ee08 | 168 | return ISA_DEVICE(dev); |
f915a115 | 169 | } |
2091ba23 | 170 | |
48a18b3c | 171 | ISADevice *isa_try_create(ISABus *bus, const char *name) |
86f4a9a5 BS |
172 | { |
173 | DeviceState *dev; | |
174 | ||
2ae0e48d | 175 | dev = qdev_try_create(BUS(bus), name); |
8f04ee08 | 176 | return ISA_DEVICE(dev); |
86f4a9a5 BS |
177 | } |
178 | ||
48a18b3c | 179 | ISADevice *isa_create_simple(ISABus *bus, const char *name) |
924f6d72 GH |
180 | { |
181 | ISADevice *dev; | |
182 | ||
48a18b3c | 183 | dev = isa_create(bus, name); |
4a17cc4f | 184 | qdev_init_nofail(DEVICE(dev)); |
924f6d72 GH |
185 | return dev; |
186 | } | |
187 | ||
14e7a645 AJ |
188 | ISADevice *isa_vga_init(ISABus *bus) |
189 | { | |
190 | switch (vga_interface_type) { | |
191 | case VGA_CIRRUS: | |
192 | return isa_create_simple(bus, "isa-cirrus-vga"); | |
193 | case VGA_QXL: | |
1081ed2c | 194 | error_report("%s: qxl: no PCI bus", __func__); |
14e7a645 AJ |
195 | return NULL; |
196 | case VGA_STD: | |
197 | return isa_create_simple(bus, "isa-vga"); | |
198 | case VGA_VMWARE: | |
1081ed2c | 199 | error_report("%s: vmware_vga: no PCI bus", __func__); |
14e7a645 | 200 | return NULL; |
a94f0c5c | 201 | case VGA_VIRTIO: |
1081ed2c | 202 | error_report("%s: virtio-vga: no PCI bus", __func__); |
a94f0c5c | 203 | return NULL; |
14e7a645 AJ |
204 | case VGA_NONE: |
205 | default: | |
206 | return NULL; | |
207 | } | |
208 | } | |
209 | ||
2091ba23 GH |
210 | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
211 | { | |
8f04ee08 | 212 | ISADevice *d = ISA_DEVICE(dev); |
2091ba23 GH |
213 | |
214 | if (d->isairq[1] != -1) { | |
215 | monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "", | |
216 | d->isairq[0], d->isairq[1]); | |
217 | } else if (d->isairq[0] != -1) { | |
218 | monitor_printf(mon, "%*sisa irq %d\n", indent, "", | |
219 | d->isairq[0]); | |
220 | } | |
221 | } | |
222 | ||
999e12bb AL |
223 | static void isabus_bridge_class_init(ObjectClass *klass, void *data) |
224 | { | |
39bffca2 | 225 | DeviceClass *dc = DEVICE_CLASS(klass); |
999e12bb | 226 | |
5658ffa3 | 227 | set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); |
39bffca2 | 228 | dc->fw_name = "isa"; |
999e12bb AL |
229 | } |
230 | ||
8c43a6f0 | 231 | static const TypeInfo isabus_bridge_info = { |
39bffca2 AL |
232 | .name = "isabus-bridge", |
233 | .parent = TYPE_SYS_BUS_DEVICE, | |
234 | .instance_size = sizeof(SysBusDevice), | |
235 | .class_init = isabus_bridge_class_init, | |
2091ba23 GH |
236 | }; |
237 | ||
39bffca2 AL |
238 | static void isa_device_class_init(ObjectClass *klass, void *data) |
239 | { | |
240 | DeviceClass *k = DEVICE_CLASS(klass); | |
0d936928 | 241 | k->bus_type = TYPE_ISA_BUS; |
39bffca2 AL |
242 | } |
243 | ||
8c43a6f0 | 244 | static const TypeInfo isa_device_type_info = { |
8f04ee08 AL |
245 | .name = TYPE_ISA_DEVICE, |
246 | .parent = TYPE_DEVICE, | |
247 | .instance_size = sizeof(ISADevice), | |
c538ca66 | 248 | .instance_init = isa_device_init, |
8f04ee08 AL |
249 | .abstract = true, |
250 | .class_size = sizeof(ISADeviceClass), | |
39bffca2 | 251 | .class_init = isa_device_class_init, |
8f04ee08 AL |
252 | }; |
253 | ||
83f7d43a | 254 | static void isabus_register_types(void) |
2091ba23 | 255 | { |
5484f30b | 256 | type_register_static(&isa_dma_info); |
0d936928 | 257 | type_register_static(&isa_bus_info); |
39bffca2 | 258 | type_register_static(&isabus_bridge_info); |
8f04ee08 | 259 | type_register_static(&isa_device_type_info); |
2091ba23 GH |
260 | } |
261 | ||
6a26e119 GN |
262 | static char *isabus_get_fw_dev_path(DeviceState *dev) |
263 | { | |
4a17cc4f | 264 | ISADevice *d = ISA_DEVICE(dev); |
6a26e119 GN |
265 | char path[40]; |
266 | int off; | |
267 | ||
268 | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); | |
ebf47c24 RH |
269 | if (d->ioport_id) { |
270 | snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id); | |
6a26e119 GN |
271 | } |
272 | ||
a5cf8262 | 273 | return g_strdup(path); |
6a26e119 GN |
274 | } |
275 | ||
c839adec AK |
276 | MemoryRegion *isa_address_space(ISADevice *dev) |
277 | { | |
bb2ed009 HP |
278 | if (dev) { |
279 | return isa_bus_from_device(dev)->address_space; | |
280 | } | |
281 | ||
282 | return isabus->address_space; | |
c839adec AK |
283 | } |
284 | ||
ac100273 JG |
285 | MemoryRegion *isa_address_space_io(ISADevice *dev) |
286 | { | |
287 | if (dev) { | |
288 | return isa_bus_from_device(dev)->address_space_io; | |
289 | } | |
290 | ||
291 | return isabus->address_space_io; | |
292 | } | |
293 | ||
83f7d43a | 294 | type_init(isabus_register_types) |