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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 | */ | |
19 | #include "hw.h" | |
2091ba23 GH |
20 | #include "monitor.h" |
21 | #include "sysbus.h" | |
f915a115 | 22 | #include "isa.h" |
c839adec | 23 | #include "exec-memory.h" |
f915a115 | 24 | |
f915a115 | 25 | static ISABus *isabus; |
fbe3288d | 26 | target_phys_addr_t isa_mem_base = 0; |
f915a115 | 27 | |
2091ba23 | 28 | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
6a26e119 | 29 | static char *isabus_get_fw_dev_path(DeviceState *dev); |
2091ba23 | 30 | |
0d936928 AL |
31 | static void isa_bus_class_init(ObjectClass *klass, void *data) |
32 | { | |
33 | BusClass *k = BUS_CLASS(klass); | |
34 | ||
35 | k->print_dev = isabus_dev_print; | |
36 | k->get_fw_dev_path = isabus_get_fw_dev_path; | |
37 | } | |
38 | ||
39 | static const TypeInfo isa_bus_info = { | |
40 | .name = TYPE_ISA_BUS, | |
41 | .parent = TYPE_BUS, | |
42 | .instance_size = sizeof(ISABus), | |
43 | .class_init = isa_bus_class_init, | |
f915a115 GH |
44 | }; |
45 | ||
c2d0d012 | 46 | ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io) |
f915a115 GH |
47 | { |
48 | if (isabus) { | |
49 | fprintf(stderr, "Can't create a second ISA bus\n"); | |
50 | return NULL; | |
51 | } | |
2091ba23 GH |
52 | if (NULL == dev) { |
53 | dev = qdev_create(NULL, "isabus-bridge"); | |
e23a1b33 | 54 | qdev_init_nofail(dev); |
2091ba23 | 55 | } |
f915a115 | 56 | |
0d936928 | 57 | isabus = FROM_QBUS(ISABus, qbus_create(TYPE_ISA_BUS, dev, NULL)); |
c2d0d012 | 58 | isabus->address_space_io = address_space_io; |
f915a115 GH |
59 | return isabus; |
60 | } | |
61 | ||
48a18b3c | 62 | void isa_bus_irqs(ISABus *bus, qemu_irq *irqs) |
f915a115 | 63 | { |
d3c68e4f HP |
64 | if (!bus) { |
65 | hw_error("Can't set isa irqs with no isa bus present."); | |
66 | } | |
67 | bus->irqs = irqs; | |
2091ba23 GH |
68 | } |
69 | ||
3a38d437 | 70 | /* |
ee951a37 | 71 | * isa_get_irq() returns the corresponding qemu_irq entry for the i8259. |
3a38d437 JS |
72 | * |
73 | * This function is only for special cases such as the 'ferr', and | |
74 | * temporary use for normal devices until they are converted to qdev. | |
75 | */ | |
48a18b3c | 76 | qemu_irq isa_get_irq(ISADevice *dev, int isairq) |
3a38d437 | 77 | { |
48a18b3c | 78 | assert(!dev || DO_UPCAST(ISABus, qbus, dev->qdev.parent_bus) == isabus); |
3a38d437 | 79 | if (isairq < 0 || isairq > 15) { |
74782223 | 80 | hw_error("isa irq %d invalid", isairq); |
3a38d437 | 81 | } |
3a38d437 JS |
82 | return isabus->irqs[isairq]; |
83 | } | |
84 | ||
2e15e23b | 85 | void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq) |
f915a115 | 86 | { |
2e15e23b | 87 | assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); |
2e15e23b | 88 | dev->isairq[dev->nirqs] = isairq; |
48a18b3c | 89 | *p = isa_get_irq(dev, isairq); |
f915a115 GH |
90 | dev->nirqs++; |
91 | } | |
92 | ||
0d959524 | 93 | static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport) |
dee41d58 | 94 | { |
0d959524 RH |
95 | if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) { |
96 | dev->ioport_id = ioport; | |
dee41d58 | 97 | } |
dee41d58 GN |
98 | } |
99 | ||
78e20593 RH |
100 | void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start) |
101 | { | |
102 | memory_region_add_subregion(isabus->address_space_io, start, io); | |
0d959524 | 103 | isa_init_ioport(dev, start); |
78e20593 RH |
104 | } |
105 | ||
d7500734 AK |
106 | void isa_register_portio_list(ISADevice *dev, uint16_t start, |
107 | const MemoryRegionPortio *pio_start, | |
108 | void *opaque, const char *name) | |
109 | { | |
110 | PortioList *piolist = g_new(PortioList, 1); | |
111 | ||
112 | /* START is how we should treat DEV, regardless of the actual | |
113 | contents of the portio array. This is how the old code | |
114 | actually handled e.g. the FDC device. */ | |
0d959524 | 115 | isa_init_ioport(dev, start); |
d7500734 AK |
116 | |
117 | portio_list_init(piolist, pio_start, opaque, name); | |
118 | portio_list_add(piolist, isabus->address_space_io, start); | |
119 | } | |
120 | ||
d307af79 | 121 | static int isa_qdev_init(DeviceState *qdev) |
f915a115 | 122 | { |
8f04ee08 AL |
123 | ISADevice *dev = ISA_DEVICE(qdev); |
124 | ISADeviceClass *klass = ISA_DEVICE_GET_CLASS(dev); | |
f915a115 | 125 | |
2091ba23 GH |
126 | dev->isairq[0] = -1; |
127 | dev->isairq[1] = -1; | |
81a322d4 | 128 | |
8f04ee08 AL |
129 | if (klass->init) { |
130 | return klass->init(dev); | |
131 | } | |
132 | ||
133 | return 0; | |
134 | } | |
135 | ||
48a18b3c | 136 | ISADevice *isa_create(ISABus *bus, const char *name) |
f915a115 GH |
137 | { |
138 | DeviceState *dev; | |
f915a115 | 139 | |
75782268 | 140 | if (!bus) { |
74782223 | 141 | hw_error("Tried to create isa device %s with no isa bus present.", |
3f66aa9c | 142 | name); |
f915a115 | 143 | } |
75782268 | 144 | dev = qdev_create(&bus->qbus, name); |
8f04ee08 | 145 | return ISA_DEVICE(dev); |
f915a115 | 146 | } |
2091ba23 | 147 | |
48a18b3c | 148 | ISADevice *isa_try_create(ISABus *bus, const char *name) |
86f4a9a5 BS |
149 | { |
150 | DeviceState *dev; | |
151 | ||
75782268 | 152 | if (!bus) { |
86f4a9a5 BS |
153 | hw_error("Tried to create isa device %s with no isa bus present.", |
154 | name); | |
155 | } | |
75782268 | 156 | dev = qdev_try_create(&bus->qbus, name); |
8f04ee08 | 157 | return ISA_DEVICE(dev); |
86f4a9a5 BS |
158 | } |
159 | ||
48a18b3c | 160 | ISADevice *isa_create_simple(ISABus *bus, const char *name) |
924f6d72 GH |
161 | { |
162 | ISADevice *dev; | |
163 | ||
48a18b3c | 164 | dev = isa_create(bus, name); |
3f66aa9c | 165 | qdev_init_nofail(&dev->qdev); |
924f6d72 GH |
166 | return dev; |
167 | } | |
168 | ||
2091ba23 GH |
169 | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
170 | { | |
8f04ee08 | 171 | ISADevice *d = ISA_DEVICE(dev); |
2091ba23 GH |
172 | |
173 | if (d->isairq[1] != -1) { | |
174 | monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "", | |
175 | d->isairq[0], d->isairq[1]); | |
176 | } else if (d->isairq[0] != -1) { | |
177 | monitor_printf(mon, "%*sisa irq %d\n", indent, "", | |
178 | d->isairq[0]); | |
179 | } | |
180 | } | |
181 | ||
81a322d4 | 182 | static int isabus_bridge_init(SysBusDevice *dev) |
2091ba23 GH |
183 | { |
184 | /* nothing */ | |
81a322d4 | 185 | return 0; |
2091ba23 GH |
186 | } |
187 | ||
999e12bb AL |
188 | static void isabus_bridge_class_init(ObjectClass *klass, void *data) |
189 | { | |
39bffca2 | 190 | DeviceClass *dc = DEVICE_CLASS(klass); |
999e12bb AL |
191 | SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
192 | ||
193 | k->init = isabus_bridge_init; | |
39bffca2 AL |
194 | dc->fw_name = "isa"; |
195 | dc->no_user = 1; | |
999e12bb AL |
196 | } |
197 | ||
39bffca2 AL |
198 | static TypeInfo isabus_bridge_info = { |
199 | .name = "isabus-bridge", | |
200 | .parent = TYPE_SYS_BUS_DEVICE, | |
201 | .instance_size = sizeof(SysBusDevice), | |
202 | .class_init = isabus_bridge_class_init, | |
2091ba23 GH |
203 | }; |
204 | ||
39bffca2 AL |
205 | static void isa_device_class_init(ObjectClass *klass, void *data) |
206 | { | |
207 | DeviceClass *k = DEVICE_CLASS(klass); | |
208 | k->init = isa_qdev_init; | |
0d936928 | 209 | k->bus_type = TYPE_ISA_BUS; |
39bffca2 AL |
210 | } |
211 | ||
8f04ee08 AL |
212 | static TypeInfo isa_device_type_info = { |
213 | .name = TYPE_ISA_DEVICE, | |
214 | .parent = TYPE_DEVICE, | |
215 | .instance_size = sizeof(ISADevice), | |
216 | .abstract = true, | |
217 | .class_size = sizeof(ISADeviceClass), | |
39bffca2 | 218 | .class_init = isa_device_class_init, |
8f04ee08 AL |
219 | }; |
220 | ||
83f7d43a | 221 | static void isabus_register_types(void) |
2091ba23 | 222 | { |
0d936928 | 223 | type_register_static(&isa_bus_info); |
39bffca2 | 224 | type_register_static(&isabus_bridge_info); |
8f04ee08 | 225 | type_register_static(&isa_device_type_info); |
2091ba23 GH |
226 | } |
227 | ||
6a26e119 GN |
228 | static char *isabus_get_fw_dev_path(DeviceState *dev) |
229 | { | |
230 | ISADevice *d = (ISADevice*)dev; | |
231 | char path[40]; | |
232 | int off; | |
233 | ||
234 | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); | |
ebf47c24 RH |
235 | if (d->ioport_id) { |
236 | snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id); | |
6a26e119 GN |
237 | } |
238 | ||
239 | return strdup(path); | |
240 | } | |
241 | ||
c839adec AK |
242 | MemoryRegion *isa_address_space(ISADevice *dev) |
243 | { | |
244 | return get_system_memory(); | |
245 | } | |
246 | ||
83f7d43a | 247 | type_init(isabus_register_types) |