root / hw / isa-bus.c @ a74cdab4
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1 | f915a115 | Gerd Hoffmann | /*
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2 | f915a115 | Gerd Hoffmann | * isa bus support for qdev.
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3 | f915a115 | Gerd Hoffmann | *
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4 | f915a115 | Gerd Hoffmann | * Copyright (c) 2009 Gerd Hoffmann <kraxel@redhat.com>
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5 | f915a115 | Gerd Hoffmann | *
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6 | f915a115 | Gerd Hoffmann | * This library is free software; you can redistribute it and/or
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7 | f915a115 | Gerd Hoffmann | * modify it under the terms of the GNU Lesser General Public
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8 | f915a115 | Gerd Hoffmann | * License as published by the Free Software Foundation; either
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9 | f915a115 | Gerd Hoffmann | * version 2 of the License, or (at your option) any later version.
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10 | f915a115 | Gerd Hoffmann | *
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11 | f915a115 | Gerd Hoffmann | * This library is distributed in the hope that it will be useful,
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12 | f915a115 | Gerd Hoffmann | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | f915a115 | Gerd Hoffmann | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 | f915a115 | Gerd Hoffmann | * Lesser General Public License for more details.
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15 | f915a115 | Gerd Hoffmann | *
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16 | f915a115 | Gerd Hoffmann | * You should have received a copy of the GNU Lesser General Public
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17 | f915a115 | Gerd Hoffmann | * License along with this library; if not, see <http://www.gnu.org/licenses/>.
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18 | f915a115 | Gerd Hoffmann | */
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19 | f915a115 | Gerd Hoffmann | #include "hw.h" |
20 | 2091ba23 | Gerd Hoffmann | #include "monitor.h" |
21 | 2091ba23 | Gerd Hoffmann | #include "sysbus.h" |
22 | f915a115 | Gerd Hoffmann | #include "isa.h" |
23 | f915a115 | Gerd Hoffmann | |
24 | f915a115 | Gerd Hoffmann | struct ISABus {
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25 | f915a115 | Gerd Hoffmann | BusState qbus; |
26 | 2091ba23 | Gerd Hoffmann | qemu_irq *irqs; |
27 | f915a115 | Gerd Hoffmann | }; |
28 | f915a115 | Gerd Hoffmann | static ISABus *isabus;
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29 | fbe3288d | Paolo Bonzini | target_phys_addr_t isa_mem_base = 0;
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30 | f915a115 | Gerd Hoffmann | |
31 | 2091ba23 | Gerd Hoffmann | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
32 | 6a26e119 | Gleb Natapov | static char *isabus_get_fw_dev_path(DeviceState *dev); |
33 | 2091ba23 | Gerd Hoffmann | |
34 | f915a115 | Gerd Hoffmann | static struct BusInfo isa_bus_info = { |
35 | 2091ba23 | Gerd Hoffmann | .name = "ISA",
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36 | 2091ba23 | Gerd Hoffmann | .size = sizeof(ISABus),
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37 | 2091ba23 | Gerd Hoffmann | .print_dev = isabus_dev_print, |
38 | 6a26e119 | Gleb Natapov | .get_fw_dev_path = isabus_get_fw_dev_path, |
39 | f915a115 | Gerd Hoffmann | }; |
40 | f915a115 | Gerd Hoffmann | |
41 | f915a115 | Gerd Hoffmann | ISABus *isa_bus_new(DeviceState *dev) |
42 | f915a115 | Gerd Hoffmann | { |
43 | f915a115 | Gerd Hoffmann | if (isabus) {
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44 | f915a115 | Gerd Hoffmann | fprintf(stderr, "Can't create a second ISA bus\n");
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45 | f915a115 | Gerd Hoffmann | return NULL; |
46 | f915a115 | Gerd Hoffmann | } |
47 | 2091ba23 | Gerd Hoffmann | if (NULL == dev) { |
48 | 2091ba23 | Gerd Hoffmann | dev = qdev_create(NULL, "isabus-bridge"); |
49 | e23a1b33 | Markus Armbruster | qdev_init_nofail(dev); |
50 | 2091ba23 | Gerd Hoffmann | } |
51 | f915a115 | Gerd Hoffmann | |
52 | f915a115 | Gerd Hoffmann | isabus = FROM_QBUS(ISABus, qbus_create(&isa_bus_info, dev, NULL));
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53 | f915a115 | Gerd Hoffmann | return isabus;
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54 | f915a115 | Gerd Hoffmann | } |
55 | f915a115 | Gerd Hoffmann | |
56 | 2091ba23 | Gerd Hoffmann | void isa_bus_irqs(qemu_irq *irqs)
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57 | f915a115 | Gerd Hoffmann | { |
58 | 2091ba23 | Gerd Hoffmann | isabus->irqs = irqs; |
59 | 2091ba23 | Gerd Hoffmann | } |
60 | 2091ba23 | Gerd Hoffmann | |
61 | 3a38d437 | Jes Sorensen | /*
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62 | ee951a37 | Jan Kiszka | * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
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63 | 3a38d437 | Jes Sorensen | *
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64 | 3a38d437 | Jes Sorensen | * This function is only for special cases such as the 'ferr', and
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65 | 3a38d437 | Jes Sorensen | * temporary use for normal devices until they are converted to qdev.
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66 | 3a38d437 | Jes Sorensen | */
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67 | ee951a37 | Jan Kiszka | qemu_irq isa_get_irq(int isairq)
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68 | 3a38d437 | Jes Sorensen | { |
69 | 3a38d437 | Jes Sorensen | if (isairq < 0 || isairq > 15) { |
70 | 74782223 | Tristan Gingold | hw_error("isa irq %d invalid", isairq);
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71 | 3a38d437 | Jes Sorensen | } |
72 | 3a38d437 | Jes Sorensen | return isabus->irqs[isairq];
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73 | 3a38d437 | Jes Sorensen | } |
74 | 3a38d437 | Jes Sorensen | |
75 | 2e15e23b | Gerd Hoffmann | void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq) |
76 | f915a115 | Gerd Hoffmann | { |
77 | 2e15e23b | Gerd Hoffmann | assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); |
78 | 2e15e23b | Gerd Hoffmann | dev->isairq[dev->nirqs] = isairq; |
79 | ee951a37 | Jan Kiszka | *p = isa_get_irq(isairq); |
80 | f915a115 | Gerd Hoffmann | dev->nirqs++; |
81 | f915a115 | Gerd Hoffmann | } |
82 | f915a115 | Gerd Hoffmann | |
83 | dee41d58 | Gleb Natapov | static void isa_init_ioport_one(ISADevice *dev, uint16_t ioport) |
84 | dee41d58 | Gleb Natapov | { |
85 | dee41d58 | Gleb Natapov | assert(dev->nioports < ARRAY_SIZE(dev->ioports)); |
86 | dee41d58 | Gleb Natapov | dev->ioports[dev->nioports++] = ioport; |
87 | dee41d58 | Gleb Natapov | } |
88 | dee41d58 | Gleb Natapov | |
89 | dee41d58 | Gleb Natapov | static int isa_cmp_ports(const void *p1, const void *p2) |
90 | dee41d58 | Gleb Natapov | { |
91 | dee41d58 | Gleb Natapov | return *(uint16_t*)p1 - *(uint16_t*)p2;
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92 | dee41d58 | Gleb Natapov | } |
93 | dee41d58 | Gleb Natapov | |
94 | dee41d58 | Gleb Natapov | void isa_init_ioport_range(ISADevice *dev, uint16_t start, uint16_t length)
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95 | dee41d58 | Gleb Natapov | { |
96 | dee41d58 | Gleb Natapov | int i;
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97 | dee41d58 | Gleb Natapov | for (i = start; i < start + length; i++) {
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98 | dee41d58 | Gleb Natapov | isa_init_ioport_one(dev, i); |
99 | dee41d58 | Gleb Natapov | } |
100 | dee41d58 | Gleb Natapov | qsort(dev->ioports, dev->nioports, sizeof(dev->ioports[0]), isa_cmp_ports); |
101 | dee41d58 | Gleb Natapov | } |
102 | dee41d58 | Gleb Natapov | |
103 | dee41d58 | Gleb Natapov | void isa_init_ioport(ISADevice *dev, uint16_t ioport)
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104 | dee41d58 | Gleb Natapov | { |
105 | dee41d58 | Gleb Natapov | isa_init_ioport_range(dev, ioport, 1);
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106 | dee41d58 | Gleb Natapov | } |
107 | dee41d58 | Gleb Natapov | |
108 | 81a322d4 | Gerd Hoffmann | static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base) |
109 | f915a115 | Gerd Hoffmann | { |
110 | f915a115 | Gerd Hoffmann | ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev); |
111 | f915a115 | Gerd Hoffmann | ISADeviceInfo *info = DO_UPCAST(ISADeviceInfo, qdev, base); |
112 | f915a115 | Gerd Hoffmann | |
113 | 2091ba23 | Gerd Hoffmann | dev->isairq[0] = -1; |
114 | 2091ba23 | Gerd Hoffmann | dev->isairq[1] = -1; |
115 | 81a322d4 | Gerd Hoffmann | |
116 | 81a322d4 | Gerd Hoffmann | return info->init(dev);
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117 | f915a115 | Gerd Hoffmann | } |
118 | f915a115 | Gerd Hoffmann | |
119 | f915a115 | Gerd Hoffmann | void isa_qdev_register(ISADeviceInfo *info)
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120 | f915a115 | Gerd Hoffmann | { |
121 | f915a115 | Gerd Hoffmann | info->qdev.init = isa_qdev_init; |
122 | f915a115 | Gerd Hoffmann | info->qdev.bus_info = &isa_bus_info; |
123 | f915a115 | Gerd Hoffmann | qdev_register(&info->qdev); |
124 | f915a115 | Gerd Hoffmann | } |
125 | f915a115 | Gerd Hoffmann | |
126 | 924f6d72 | Gerd Hoffmann | ISADevice *isa_create(const char *name) |
127 | f915a115 | Gerd Hoffmann | { |
128 | f915a115 | Gerd Hoffmann | DeviceState *dev; |
129 | f915a115 | Gerd Hoffmann | |
130 | f915a115 | Gerd Hoffmann | if (!isabus) {
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131 | 74782223 | Tristan Gingold | hw_error("Tried to create isa device %s with no isa bus present.",
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132 | 3f66aa9c | Markus Armbruster | name); |
133 | f915a115 | Gerd Hoffmann | } |
134 | f915a115 | Gerd Hoffmann | dev = qdev_create(&isabus->qbus, name); |
135 | 2e15e23b | Gerd Hoffmann | return DO_UPCAST(ISADevice, qdev, dev);
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136 | f915a115 | Gerd Hoffmann | } |
137 | 2091ba23 | Gerd Hoffmann | |
138 | 86f4a9a5 | Blue Swirl | ISADevice *isa_try_create(const char *name) |
139 | 86f4a9a5 | Blue Swirl | { |
140 | 86f4a9a5 | Blue Swirl | DeviceState *dev; |
141 | 86f4a9a5 | Blue Swirl | |
142 | 86f4a9a5 | Blue Swirl | if (!isabus) {
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143 | 86f4a9a5 | Blue Swirl | hw_error("Tried to create isa device %s with no isa bus present.",
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144 | 86f4a9a5 | Blue Swirl | name); |
145 | 86f4a9a5 | Blue Swirl | } |
146 | 86f4a9a5 | Blue Swirl | dev = qdev_try_create(&isabus->qbus, name); |
147 | 86f4a9a5 | Blue Swirl | return DO_UPCAST(ISADevice, qdev, dev);
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148 | 86f4a9a5 | Blue Swirl | } |
149 | 86f4a9a5 | Blue Swirl | |
150 | 924f6d72 | Gerd Hoffmann | ISADevice *isa_create_simple(const char *name) |
151 | 924f6d72 | Gerd Hoffmann | { |
152 | 924f6d72 | Gerd Hoffmann | ISADevice *dev; |
153 | 924f6d72 | Gerd Hoffmann | |
154 | 924f6d72 | Gerd Hoffmann | dev = isa_create(name); |
155 | 3f66aa9c | Markus Armbruster | qdev_init_nofail(&dev->qdev); |
156 | 924f6d72 | Gerd Hoffmann | return dev;
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157 | 924f6d72 | Gerd Hoffmann | } |
158 | 924f6d72 | Gerd Hoffmann | |
159 | 2091ba23 | Gerd Hoffmann | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
160 | 2091ba23 | Gerd Hoffmann | { |
161 | 2091ba23 | Gerd Hoffmann | ISADevice *d = DO_UPCAST(ISADevice, qdev, dev); |
162 | 2091ba23 | Gerd Hoffmann | |
163 | 2091ba23 | Gerd Hoffmann | if (d->isairq[1] != -1) { |
164 | 2091ba23 | Gerd Hoffmann | monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "", |
165 | 2091ba23 | Gerd Hoffmann | d->isairq[0], d->isairq[1]); |
166 | 2091ba23 | Gerd Hoffmann | } else if (d->isairq[0] != -1) { |
167 | 2091ba23 | Gerd Hoffmann | monitor_printf(mon, "%*sisa irq %d\n", indent, "", |
168 | 2091ba23 | Gerd Hoffmann | d->isairq[0]);
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169 | 2091ba23 | Gerd Hoffmann | } |
170 | 2091ba23 | Gerd Hoffmann | } |
171 | 2091ba23 | Gerd Hoffmann | |
172 | 81a322d4 | Gerd Hoffmann | static int isabus_bridge_init(SysBusDevice *dev) |
173 | 2091ba23 | Gerd Hoffmann | { |
174 | 2091ba23 | Gerd Hoffmann | /* nothing */
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175 | 81a322d4 | Gerd Hoffmann | return 0; |
176 | 2091ba23 | Gerd Hoffmann | } |
177 | 2091ba23 | Gerd Hoffmann | |
178 | 2091ba23 | Gerd Hoffmann | static SysBusDeviceInfo isabus_bridge_info = {
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179 | 2091ba23 | Gerd Hoffmann | .init = isabus_bridge_init, |
180 | 2091ba23 | Gerd Hoffmann | .qdev.name = "isabus-bridge",
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181 | 779206de | Gleb Natapov | .qdev.fw_name = "isa",
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182 | 2091ba23 | Gerd Hoffmann | .qdev.size = sizeof(SysBusDevice),
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183 | 787aa97a | Gerd Hoffmann | .qdev.no_user = 1,
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184 | 2091ba23 | Gerd Hoffmann | }; |
185 | 2091ba23 | Gerd Hoffmann | |
186 | 2091ba23 | Gerd Hoffmann | static void isabus_register_devices(void) |
187 | 2091ba23 | Gerd Hoffmann | { |
188 | 2091ba23 | Gerd Hoffmann | sysbus_register_withprop(&isabus_bridge_info); |
189 | 2091ba23 | Gerd Hoffmann | } |
190 | 2091ba23 | Gerd Hoffmann | |
191 | 6a26e119 | Gleb Natapov | static char *isabus_get_fw_dev_path(DeviceState *dev) |
192 | 6a26e119 | Gleb Natapov | { |
193 | 6a26e119 | Gleb Natapov | ISADevice *d = (ISADevice*)dev; |
194 | 6a26e119 | Gleb Natapov | char path[40]; |
195 | 6a26e119 | Gleb Natapov | int off;
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196 | 6a26e119 | Gleb Natapov | |
197 | 6a26e119 | Gleb Natapov | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); |
198 | 6a26e119 | Gleb Natapov | if (d->nioports) {
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199 | 6a26e119 | Gleb Natapov | snprintf(path + off, sizeof(path) - off, "@%04x", d->ioports[0]); |
200 | 6a26e119 | Gleb Natapov | } |
201 | 6a26e119 | Gleb Natapov | |
202 | 6a26e119 | Gleb Natapov | return strdup(path);
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203 | 6a26e119 | Gleb Natapov | } |
204 | 6a26e119 | Gleb Natapov | |
205 | 2091ba23 | Gerd Hoffmann | device_init(isabus_register_devices) |