qdev: don't access name through info
[qemu.git] / hw / isa-bus.c
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 "isa.h"
23 #include "exec-memory.h"
24
25 static ISABus *isabus;
26 target_phys_addr_t isa_mem_base = 0;
27
28 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent);
29 static char *isabus_get_fw_dev_path(DeviceState *dev);
30
31 static struct BusInfo isa_bus_info = {
32 .name = "ISA",
33 .size = sizeof(ISABus),
34 .print_dev = isabus_dev_print,
35 .get_fw_dev_path = isabus_get_fw_dev_path,
36 };
37
38 ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io)
39 {
40 if (isabus) {
41 fprintf(stderr, "Can't create a second ISA bus\n");
42 return NULL;
43 }
44 if (NULL == dev) {
45 dev = qdev_create(NULL, "isabus-bridge");
46 qdev_init_nofail(dev);
47 }
48
49 isabus = FROM_QBUS(ISABus, qbus_create(&isa_bus_info, dev, NULL));
50 isabus->address_space_io = address_space_io;
51 return isabus;
52 }
53
54 void isa_bus_irqs(ISABus *bus, qemu_irq *irqs)
55 {
56 if (!bus) {
57 hw_error("Can't set isa irqs with no isa bus present.");
58 }
59 bus->irqs = irqs;
60 }
61
62 /*
63 * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
64 *
65 * This function is only for special cases such as the 'ferr', and
66 * temporary use for normal devices until they are converted to qdev.
67 */
68 qemu_irq isa_get_irq(ISADevice *dev, int isairq)
69 {
70 assert(!dev || DO_UPCAST(ISABus, qbus, dev->qdev.parent_bus) == isabus);
71 if (isairq < 0 || isairq > 15) {
72 hw_error("isa irq %d invalid", isairq);
73 }
74 return isabus->irqs[isairq];
75 }
76
77 void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq)
78 {
79 assert(dev->nirqs < ARRAY_SIZE(dev->isairq));
80 dev->isairq[dev->nirqs] = isairq;
81 *p = isa_get_irq(dev, isairq);
82 dev->nirqs++;
83 }
84
85 static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport)
86 {
87 if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) {
88 dev->ioport_id = ioport;
89 }
90 }
91
92 void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
93 {
94 memory_region_add_subregion(isabus->address_space_io, start, io);
95 isa_init_ioport(dev, start);
96 }
97
98 void isa_register_portio_list(ISADevice *dev, uint16_t start,
99 const MemoryRegionPortio *pio_start,
100 void *opaque, const char *name)
101 {
102 PortioList *piolist = g_new(PortioList, 1);
103
104 /* START is how we should treat DEV, regardless of the actual
105 contents of the portio array. This is how the old code
106 actually handled e.g. the FDC device. */
107 isa_init_ioport(dev, start);
108
109 portio_list_init(piolist, pio_start, opaque, name);
110 portio_list_add(piolist, isabus->address_space_io, start);
111 }
112
113 static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base)
114 {
115 ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev);
116 ISADeviceInfo *info = DO_UPCAST(ISADeviceInfo, qdev, base);
117
118 dev->isairq[0] = -1;
119 dev->isairq[1] = -1;
120
121 return info->init(dev);
122 }
123
124 void isa_qdev_register(ISADeviceInfo *info)
125 {
126 info->qdev.init = isa_qdev_init;
127 info->qdev.bus_info = &isa_bus_info;
128 qdev_register(&info->qdev);
129 }
130
131 ISADevice *isa_create(ISABus *bus, const char *name)
132 {
133 DeviceState *dev;
134
135 if (!bus) {
136 hw_error("Tried to create isa device %s with no isa bus present.",
137 name);
138 }
139 dev = qdev_create(&bus->qbus, name);
140 return DO_UPCAST(ISADevice, qdev, dev);
141 }
142
143 ISADevice *isa_try_create(ISABus *bus, const char *name)
144 {
145 DeviceState *dev;
146
147 if (!bus) {
148 hw_error("Tried to create isa device %s with no isa bus present.",
149 name);
150 }
151 dev = qdev_try_create(&bus->qbus, name);
152 return DO_UPCAST(ISADevice, qdev, dev);
153 }
154
155 ISADevice *isa_create_simple(ISABus *bus, const char *name)
156 {
157 ISADevice *dev;
158
159 dev = isa_create(bus, name);
160 qdev_init_nofail(&dev->qdev);
161 return dev;
162 }
163
164 static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent)
165 {
166 ISADevice *d = DO_UPCAST(ISADevice, qdev, dev);
167
168 if (d->isairq[1] != -1) {
169 monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "",
170 d->isairq[0], d->isairq[1]);
171 } else if (d->isairq[0] != -1) {
172 monitor_printf(mon, "%*sisa irq %d\n", indent, "",
173 d->isairq[0]);
174 }
175 }
176
177 static int isabus_bridge_init(SysBusDevice *dev)
178 {
179 /* nothing */
180 return 0;
181 }
182
183 static SysBusDeviceInfo isabus_bridge_info = {
184 .init = isabus_bridge_init,
185 .qdev.name = "isabus-bridge",
186 .qdev.fw_name = "isa",
187 .qdev.size = sizeof(SysBusDevice),
188 .qdev.no_user = 1,
189 };
190
191 static void isabus_register_devices(void)
192 {
193 sysbus_register_withprop(&isabus_bridge_info);
194 }
195
196 static char *isabus_get_fw_dev_path(DeviceState *dev)
197 {
198 ISADevice *d = (ISADevice*)dev;
199 char path[40];
200 int off;
201
202 off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev));
203 if (d->ioport_id) {
204 snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id);
205 }
206
207 return strdup(path);
208 }
209
210 MemoryRegion *isa_address_space(ISADevice *dev)
211 {
212 return get_system_memory();
213 }
214
215 device_init(isabus_register_devices)