root / hw / isa-bus.c @ 15d7dc4f
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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 | f915a115 | Gerd Hoffmann | #include "sysemu.h" |
21 | 2091ba23 | Gerd Hoffmann | #include "monitor.h" |
22 | 2091ba23 | Gerd Hoffmann | #include "sysbus.h" |
23 | f915a115 | Gerd Hoffmann | #include "isa.h" |
24 | f915a115 | Gerd Hoffmann | |
25 | f915a115 | Gerd Hoffmann | struct ISABus {
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26 | f915a115 | Gerd Hoffmann | BusState qbus; |
27 | 2091ba23 | Gerd Hoffmann | qemu_irq *irqs; |
28 | f915a115 | Gerd Hoffmann | }; |
29 | f915a115 | Gerd Hoffmann | static ISABus *isabus;
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30 | fbe3288d | Paolo Bonzini | target_phys_addr_t isa_mem_base = 0;
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31 | f915a115 | Gerd Hoffmann | |
32 | 2091ba23 | Gerd Hoffmann | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
33 | 6a26e119 | Gleb Natapov | static char *isabus_get_fw_dev_path(DeviceState *dev); |
34 | 2091ba23 | Gerd Hoffmann | |
35 | f915a115 | Gerd Hoffmann | static struct BusInfo isa_bus_info = { |
36 | 2091ba23 | Gerd Hoffmann | .name = "ISA",
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37 | 2091ba23 | Gerd Hoffmann | .size = sizeof(ISABus),
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38 | 2091ba23 | Gerd Hoffmann | .print_dev = isabus_dev_print, |
39 | 6a26e119 | Gleb Natapov | .get_fw_dev_path = isabus_get_fw_dev_path, |
40 | f915a115 | Gerd Hoffmann | }; |
41 | f915a115 | Gerd Hoffmann | |
42 | f915a115 | Gerd Hoffmann | ISABus *isa_bus_new(DeviceState *dev) |
43 | f915a115 | Gerd Hoffmann | { |
44 | f915a115 | Gerd Hoffmann | if (isabus) {
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45 | f915a115 | Gerd Hoffmann | fprintf(stderr, "Can't create a second ISA bus\n");
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46 | f915a115 | Gerd Hoffmann | return NULL; |
47 | f915a115 | Gerd Hoffmann | } |
48 | 2091ba23 | Gerd Hoffmann | if (NULL == dev) { |
49 | 2091ba23 | Gerd Hoffmann | dev = qdev_create(NULL, "isabus-bridge"); |
50 | e23a1b33 | Markus Armbruster | qdev_init_nofail(dev); |
51 | 2091ba23 | Gerd Hoffmann | } |
52 | f915a115 | Gerd Hoffmann | |
53 | f915a115 | Gerd Hoffmann | isabus = FROM_QBUS(ISABus, qbus_create(&isa_bus_info, dev, NULL));
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54 | f915a115 | Gerd Hoffmann | return isabus;
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55 | f915a115 | Gerd Hoffmann | } |
56 | f915a115 | Gerd Hoffmann | |
57 | 2091ba23 | Gerd Hoffmann | void isa_bus_irqs(qemu_irq *irqs)
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58 | f915a115 | Gerd Hoffmann | { |
59 | 2091ba23 | Gerd Hoffmann | isabus->irqs = irqs; |
60 | 2091ba23 | Gerd Hoffmann | } |
61 | 2091ba23 | Gerd Hoffmann | |
62 | 3a38d437 | Jes Sorensen | /*
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63 | ee951a37 | Jan Kiszka | * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
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64 | 3a38d437 | Jes Sorensen | *
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65 | 3a38d437 | Jes Sorensen | * This function is only for special cases such as the 'ferr', and
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66 | 3a38d437 | Jes Sorensen | * temporary use for normal devices until they are converted to qdev.
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67 | 3a38d437 | Jes Sorensen | */
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68 | ee951a37 | Jan Kiszka | qemu_irq isa_get_irq(int isairq)
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69 | 3a38d437 | Jes Sorensen | { |
70 | 3a38d437 | Jes Sorensen | if (isairq < 0 || isairq > 15) { |
71 | 74782223 | Tristan Gingold | hw_error("isa irq %d invalid", isairq);
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72 | 3a38d437 | Jes Sorensen | } |
73 | 3a38d437 | Jes Sorensen | return isabus->irqs[isairq];
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74 | 3a38d437 | Jes Sorensen | } |
75 | 3a38d437 | Jes Sorensen | |
76 | 2e15e23b | Gerd Hoffmann | void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq) |
77 | f915a115 | Gerd Hoffmann | { |
78 | 2e15e23b | Gerd Hoffmann | assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); |
79 | 2e15e23b | Gerd Hoffmann | dev->isairq[dev->nirqs] = isairq; |
80 | ee951a37 | Jan Kiszka | *p = isa_get_irq(isairq); |
81 | f915a115 | Gerd Hoffmann | dev->nirqs++; |
82 | f915a115 | Gerd Hoffmann | } |
83 | f915a115 | Gerd Hoffmann | |
84 | dee41d58 | Gleb Natapov | static void isa_init_ioport_one(ISADevice *dev, uint16_t ioport) |
85 | dee41d58 | Gleb Natapov | { |
86 | dee41d58 | Gleb Natapov | assert(dev->nioports < ARRAY_SIZE(dev->ioports)); |
87 | dee41d58 | Gleb Natapov | dev->ioports[dev->nioports++] = ioport; |
88 | dee41d58 | Gleb Natapov | } |
89 | dee41d58 | Gleb Natapov | |
90 | dee41d58 | Gleb Natapov | static int isa_cmp_ports(const void *p1, const void *p2) |
91 | dee41d58 | Gleb Natapov | { |
92 | dee41d58 | Gleb Natapov | return *(uint16_t*)p1 - *(uint16_t*)p2;
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93 | dee41d58 | Gleb Natapov | } |
94 | dee41d58 | Gleb Natapov | |
95 | dee41d58 | Gleb Natapov | void isa_init_ioport_range(ISADevice *dev, uint16_t start, uint16_t length)
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96 | dee41d58 | Gleb Natapov | { |
97 | dee41d58 | Gleb Natapov | int i;
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98 | dee41d58 | Gleb Natapov | for (i = start; i < start + length; i++) {
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99 | dee41d58 | Gleb Natapov | isa_init_ioport_one(dev, i); |
100 | dee41d58 | Gleb Natapov | } |
101 | dee41d58 | Gleb Natapov | qsort(dev->ioports, dev->nioports, sizeof(dev->ioports[0]), isa_cmp_ports); |
102 | dee41d58 | Gleb Natapov | } |
103 | dee41d58 | Gleb Natapov | |
104 | dee41d58 | Gleb Natapov | void isa_init_ioport(ISADevice *dev, uint16_t ioport)
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105 | dee41d58 | Gleb Natapov | { |
106 | dee41d58 | Gleb Natapov | isa_init_ioport_range(dev, ioport, 1);
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107 | dee41d58 | Gleb Natapov | } |
108 | dee41d58 | Gleb Natapov | |
109 | 81a322d4 | Gerd Hoffmann | static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base) |
110 | f915a115 | Gerd Hoffmann | { |
111 | f915a115 | Gerd Hoffmann | ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev); |
112 | f915a115 | Gerd Hoffmann | ISADeviceInfo *info = DO_UPCAST(ISADeviceInfo, qdev, base); |
113 | f915a115 | Gerd Hoffmann | |
114 | 2091ba23 | Gerd Hoffmann | dev->isairq[0] = -1; |
115 | 2091ba23 | Gerd Hoffmann | dev->isairq[1] = -1; |
116 | 81a322d4 | Gerd Hoffmann | |
117 | 81a322d4 | Gerd Hoffmann | return info->init(dev);
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118 | f915a115 | Gerd Hoffmann | } |
119 | f915a115 | Gerd Hoffmann | |
120 | f915a115 | Gerd Hoffmann | void isa_qdev_register(ISADeviceInfo *info)
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121 | f915a115 | Gerd Hoffmann | { |
122 | f915a115 | Gerd Hoffmann | info->qdev.init = isa_qdev_init; |
123 | f915a115 | Gerd Hoffmann | info->qdev.bus_info = &isa_bus_info; |
124 | f915a115 | Gerd Hoffmann | qdev_register(&info->qdev); |
125 | f915a115 | Gerd Hoffmann | } |
126 | f915a115 | Gerd Hoffmann | |
127 | 924f6d72 | Gerd Hoffmann | ISADevice *isa_create(const char *name) |
128 | f915a115 | Gerd Hoffmann | { |
129 | f915a115 | Gerd Hoffmann | DeviceState *dev; |
130 | f915a115 | Gerd Hoffmann | |
131 | f915a115 | Gerd Hoffmann | if (!isabus) {
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132 | 74782223 | Tristan Gingold | hw_error("Tried to create isa device %s with no isa bus present.",
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133 | 3f66aa9c | Markus Armbruster | name); |
134 | f915a115 | Gerd Hoffmann | } |
135 | f915a115 | Gerd Hoffmann | dev = qdev_create(&isabus->qbus, name); |
136 | 2e15e23b | Gerd Hoffmann | return DO_UPCAST(ISADevice, qdev, dev);
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137 | f915a115 | Gerd Hoffmann | } |
138 | 2091ba23 | Gerd Hoffmann | |
139 | 86f4a9a5 | Blue Swirl | ISADevice *isa_try_create(const char *name) |
140 | 86f4a9a5 | Blue Swirl | { |
141 | 86f4a9a5 | Blue Swirl | DeviceState *dev; |
142 | 86f4a9a5 | Blue Swirl | |
143 | 86f4a9a5 | Blue Swirl | if (!isabus) {
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144 | 86f4a9a5 | Blue Swirl | hw_error("Tried to create isa device %s with no isa bus present.",
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145 | 86f4a9a5 | Blue Swirl | name); |
146 | 86f4a9a5 | Blue Swirl | } |
147 | 86f4a9a5 | Blue Swirl | dev = qdev_try_create(&isabus->qbus, name); |
148 | 86f4a9a5 | Blue Swirl | return DO_UPCAST(ISADevice, qdev, dev);
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149 | 86f4a9a5 | Blue Swirl | } |
150 | 86f4a9a5 | Blue Swirl | |
151 | 924f6d72 | Gerd Hoffmann | ISADevice *isa_create_simple(const char *name) |
152 | 924f6d72 | Gerd Hoffmann | { |
153 | 924f6d72 | Gerd Hoffmann | ISADevice *dev; |
154 | 924f6d72 | Gerd Hoffmann | |
155 | 924f6d72 | Gerd Hoffmann | dev = isa_create(name); |
156 | 3f66aa9c | Markus Armbruster | qdev_init_nofail(&dev->qdev); |
157 | 924f6d72 | Gerd Hoffmann | return dev;
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158 | 924f6d72 | Gerd Hoffmann | } |
159 | 924f6d72 | Gerd Hoffmann | |
160 | 2091ba23 | Gerd Hoffmann | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
161 | 2091ba23 | Gerd Hoffmann | { |
162 | 2091ba23 | Gerd Hoffmann | ISADevice *d = DO_UPCAST(ISADevice, qdev, dev); |
163 | 2091ba23 | Gerd Hoffmann | |
164 | 2091ba23 | Gerd Hoffmann | if (d->isairq[1] != -1) { |
165 | 2091ba23 | Gerd Hoffmann | monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "", |
166 | 2091ba23 | Gerd Hoffmann | d->isairq[0], d->isairq[1]); |
167 | 2091ba23 | Gerd Hoffmann | } else if (d->isairq[0] != -1) { |
168 | 2091ba23 | Gerd Hoffmann | monitor_printf(mon, "%*sisa irq %d\n", indent, "", |
169 | 2091ba23 | Gerd Hoffmann | d->isairq[0]);
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170 | 2091ba23 | Gerd Hoffmann | } |
171 | 2091ba23 | Gerd Hoffmann | } |
172 | 2091ba23 | Gerd Hoffmann | |
173 | 81a322d4 | Gerd Hoffmann | static int isabus_bridge_init(SysBusDevice *dev) |
174 | 2091ba23 | Gerd Hoffmann | { |
175 | 2091ba23 | Gerd Hoffmann | /* nothing */
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176 | 81a322d4 | Gerd Hoffmann | return 0; |
177 | 2091ba23 | Gerd Hoffmann | } |
178 | 2091ba23 | Gerd Hoffmann | |
179 | 2091ba23 | Gerd Hoffmann | static SysBusDeviceInfo isabus_bridge_info = {
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180 | 2091ba23 | Gerd Hoffmann | .init = isabus_bridge_init, |
181 | 2091ba23 | Gerd Hoffmann | .qdev.name = "isabus-bridge",
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182 | 779206de | Gleb Natapov | .qdev.fw_name = "isa",
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183 | 2091ba23 | Gerd Hoffmann | .qdev.size = sizeof(SysBusDevice),
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184 | 787aa97a | Gerd Hoffmann | .qdev.no_user = 1,
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185 | 2091ba23 | Gerd Hoffmann | }; |
186 | 2091ba23 | Gerd Hoffmann | |
187 | 2091ba23 | Gerd Hoffmann | static void isabus_register_devices(void) |
188 | 2091ba23 | Gerd Hoffmann | { |
189 | 2091ba23 | Gerd Hoffmann | sysbus_register_withprop(&isabus_bridge_info); |
190 | 2091ba23 | Gerd Hoffmann | } |
191 | 2091ba23 | Gerd Hoffmann | |
192 | 6a26e119 | Gleb Natapov | static char *isabus_get_fw_dev_path(DeviceState *dev) |
193 | 6a26e119 | Gleb Natapov | { |
194 | 6a26e119 | Gleb Natapov | ISADevice *d = (ISADevice*)dev; |
195 | 6a26e119 | Gleb Natapov | char path[40]; |
196 | 6a26e119 | Gleb Natapov | int off;
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197 | 6a26e119 | Gleb Natapov | |
198 | 6a26e119 | Gleb Natapov | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); |
199 | 6a26e119 | Gleb Natapov | if (d->nioports) {
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200 | 6a26e119 | Gleb Natapov | snprintf(path + off, sizeof(path) - off, "@%04x", d->ioports[0]); |
201 | 6a26e119 | Gleb Natapov | } |
202 | 6a26e119 | Gleb Natapov | |
203 | 6a26e119 | Gleb Natapov | return strdup(path);
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204 | 6a26e119 | Gleb Natapov | } |
205 | 6a26e119 | Gleb Natapov | |
206 | 2091ba23 | Gerd Hoffmann | device_init(isabus_register_devices) |