root / hw / isa-bus.c @ be40edcd
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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 | c839adec | Avi Kivity | #include "exec-memory.h" |
24 | f915a115 | Gerd Hoffmann | |
25 | f915a115 | Gerd Hoffmann | struct ISABus {
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26 | f915a115 | Gerd Hoffmann | BusState qbus; |
27 | c2d0d012 | Richard Henderson | MemoryRegion *address_space_io; |
28 | 2091ba23 | Gerd Hoffmann | qemu_irq *irqs; |
29 | f915a115 | Gerd Hoffmann | }; |
30 | f915a115 | Gerd Hoffmann | static ISABus *isabus;
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31 | fbe3288d | Paolo Bonzini | target_phys_addr_t isa_mem_base = 0;
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32 | f915a115 | Gerd Hoffmann | |
33 | 2091ba23 | Gerd Hoffmann | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent); |
34 | 6a26e119 | Gleb Natapov | static char *isabus_get_fw_dev_path(DeviceState *dev); |
35 | 2091ba23 | Gerd Hoffmann | |
36 | f915a115 | Gerd Hoffmann | static struct BusInfo isa_bus_info = { |
37 | 2091ba23 | Gerd Hoffmann | .name = "ISA",
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38 | 2091ba23 | Gerd Hoffmann | .size = sizeof(ISABus),
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39 | 2091ba23 | Gerd Hoffmann | .print_dev = isabus_dev_print, |
40 | 6a26e119 | Gleb Natapov | .get_fw_dev_path = isabus_get_fw_dev_path, |
41 | f915a115 | Gerd Hoffmann | }; |
42 | f915a115 | Gerd Hoffmann | |
43 | c2d0d012 | Richard Henderson | ISABus *isa_bus_new(DeviceState *dev, MemoryRegion *address_space_io) |
44 | f915a115 | Gerd Hoffmann | { |
45 | f915a115 | Gerd Hoffmann | if (isabus) {
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46 | f915a115 | Gerd Hoffmann | fprintf(stderr, "Can't create a second ISA bus\n");
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47 | f915a115 | Gerd Hoffmann | return NULL; |
48 | f915a115 | Gerd Hoffmann | } |
49 | 2091ba23 | Gerd Hoffmann | if (NULL == dev) { |
50 | 2091ba23 | Gerd Hoffmann | dev = qdev_create(NULL, "isabus-bridge"); |
51 | e23a1b33 | Markus Armbruster | qdev_init_nofail(dev); |
52 | 2091ba23 | Gerd Hoffmann | } |
53 | f915a115 | Gerd Hoffmann | |
54 | f915a115 | Gerd Hoffmann | isabus = FROM_QBUS(ISABus, qbus_create(&isa_bus_info, dev, NULL));
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55 | c2d0d012 | Richard Henderson | isabus->address_space_io = address_space_io; |
56 | f915a115 | Gerd Hoffmann | return isabus;
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57 | f915a115 | Gerd Hoffmann | } |
58 | f915a115 | Gerd Hoffmann | |
59 | 2091ba23 | Gerd Hoffmann | void isa_bus_irqs(qemu_irq *irqs)
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60 | f915a115 | Gerd Hoffmann | { |
61 | 2091ba23 | Gerd Hoffmann | isabus->irqs = irqs; |
62 | 2091ba23 | Gerd Hoffmann | } |
63 | 2091ba23 | Gerd Hoffmann | |
64 | 3a38d437 | Jes Sorensen | /*
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65 | ee951a37 | Jan Kiszka | * isa_get_irq() returns the corresponding qemu_irq entry for the i8259.
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66 | 3a38d437 | Jes Sorensen | *
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67 | 3a38d437 | Jes Sorensen | * This function is only for special cases such as the 'ferr', and
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68 | 3a38d437 | Jes Sorensen | * temporary use for normal devices until they are converted to qdev.
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69 | 3a38d437 | Jes Sorensen | */
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70 | ee951a37 | Jan Kiszka | qemu_irq isa_get_irq(int isairq)
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71 | 3a38d437 | Jes Sorensen | { |
72 | 3a38d437 | Jes Sorensen | if (isairq < 0 || isairq > 15) { |
73 | 74782223 | Tristan Gingold | hw_error("isa irq %d invalid", isairq);
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74 | 3a38d437 | Jes Sorensen | } |
75 | 3a38d437 | Jes Sorensen | return isabus->irqs[isairq];
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76 | 3a38d437 | Jes Sorensen | } |
77 | 3a38d437 | Jes Sorensen | |
78 | 2e15e23b | Gerd Hoffmann | void isa_init_irq(ISADevice *dev, qemu_irq *p, int isairq) |
79 | f915a115 | Gerd Hoffmann | { |
80 | 2e15e23b | Gerd Hoffmann | assert(dev->nirqs < ARRAY_SIZE(dev->isairq)); |
81 | 2e15e23b | Gerd Hoffmann | dev->isairq[dev->nirqs] = isairq; |
82 | ee951a37 | Jan Kiszka | *p = isa_get_irq(isairq); |
83 | f915a115 | Gerd Hoffmann | dev->nirqs++; |
84 | f915a115 | Gerd Hoffmann | } |
85 | f915a115 | Gerd Hoffmann | |
86 | 0d959524 | Richard Henderson | static inline void isa_init_ioport(ISADevice *dev, uint16_t ioport) |
87 | dee41d58 | Gleb Natapov | { |
88 | 0d959524 | Richard Henderson | if (dev && (dev->ioport_id == 0 || ioport < dev->ioport_id)) { |
89 | 0d959524 | Richard Henderson | dev->ioport_id = ioport; |
90 | dee41d58 | Gleb Natapov | } |
91 | dee41d58 | Gleb Natapov | } |
92 | dee41d58 | Gleb Natapov | |
93 | 78e20593 | Richard Henderson | void isa_register_ioport(ISADevice *dev, MemoryRegion *io, uint16_t start)
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94 | 78e20593 | Richard Henderson | { |
95 | 78e20593 | Richard Henderson | memory_region_add_subregion(isabus->address_space_io, start, io); |
96 | 0d959524 | Richard Henderson | isa_init_ioport(dev, start); |
97 | 78e20593 | Richard Henderson | } |
98 | 78e20593 | Richard Henderson | |
99 | d7500734 | Avi Kivity | void isa_register_portio_list(ISADevice *dev, uint16_t start,
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100 | d7500734 | Avi Kivity | const MemoryRegionPortio *pio_start,
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101 | d7500734 | Avi Kivity | void *opaque, const char *name) |
102 | d7500734 | Avi Kivity | { |
103 | d7500734 | Avi Kivity | PortioList *piolist = g_new(PortioList, 1);
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104 | d7500734 | Avi Kivity | |
105 | d7500734 | Avi Kivity | /* START is how we should treat DEV, regardless of the actual
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106 | d7500734 | Avi Kivity | contents of the portio array. This is how the old code
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107 | d7500734 | Avi Kivity | actually handled e.g. the FDC device. */
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108 | 0d959524 | Richard Henderson | isa_init_ioport(dev, start); |
109 | d7500734 | Avi Kivity | |
110 | d7500734 | Avi Kivity | portio_list_init(piolist, pio_start, opaque, name); |
111 | d7500734 | Avi Kivity | portio_list_add(piolist, isabus->address_space_io, start); |
112 | d7500734 | Avi Kivity | } |
113 | d7500734 | Avi Kivity | |
114 | 81a322d4 | Gerd Hoffmann | static int isa_qdev_init(DeviceState *qdev, DeviceInfo *base) |
115 | f915a115 | Gerd Hoffmann | { |
116 | f915a115 | Gerd Hoffmann | ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev); |
117 | f915a115 | Gerd Hoffmann | ISADeviceInfo *info = DO_UPCAST(ISADeviceInfo, qdev, base); |
118 | f915a115 | Gerd Hoffmann | |
119 | 2091ba23 | Gerd Hoffmann | dev->isairq[0] = -1; |
120 | 2091ba23 | Gerd Hoffmann | dev->isairq[1] = -1; |
121 | 81a322d4 | Gerd Hoffmann | |
122 | 81a322d4 | Gerd Hoffmann | return info->init(dev);
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123 | f915a115 | Gerd Hoffmann | } |
124 | f915a115 | Gerd Hoffmann | |
125 | f915a115 | Gerd Hoffmann | void isa_qdev_register(ISADeviceInfo *info)
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126 | f915a115 | Gerd Hoffmann | { |
127 | f915a115 | Gerd Hoffmann | info->qdev.init = isa_qdev_init; |
128 | f915a115 | Gerd Hoffmann | info->qdev.bus_info = &isa_bus_info; |
129 | f915a115 | Gerd Hoffmann | qdev_register(&info->qdev); |
130 | f915a115 | Gerd Hoffmann | } |
131 | f915a115 | Gerd Hoffmann | |
132 | 924f6d72 | Gerd Hoffmann | ISADevice *isa_create(const char *name) |
133 | f915a115 | Gerd Hoffmann | { |
134 | f915a115 | Gerd Hoffmann | DeviceState *dev; |
135 | f915a115 | Gerd Hoffmann | |
136 | f915a115 | Gerd Hoffmann | if (!isabus) {
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137 | 74782223 | Tristan Gingold | hw_error("Tried to create isa device %s with no isa bus present.",
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138 | 3f66aa9c | Markus Armbruster | name); |
139 | f915a115 | Gerd Hoffmann | } |
140 | f915a115 | Gerd Hoffmann | dev = qdev_create(&isabus->qbus, name); |
141 | 2e15e23b | Gerd Hoffmann | return DO_UPCAST(ISADevice, qdev, dev);
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142 | f915a115 | Gerd Hoffmann | } |
143 | 2091ba23 | Gerd Hoffmann | |
144 | 86f4a9a5 | Blue Swirl | ISADevice *isa_try_create(const char *name) |
145 | 86f4a9a5 | Blue Swirl | { |
146 | 86f4a9a5 | Blue Swirl | DeviceState *dev; |
147 | 86f4a9a5 | Blue Swirl | |
148 | 86f4a9a5 | Blue Swirl | if (!isabus) {
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149 | 86f4a9a5 | Blue Swirl | hw_error("Tried to create isa device %s with no isa bus present.",
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150 | 86f4a9a5 | Blue Swirl | name); |
151 | 86f4a9a5 | Blue Swirl | } |
152 | 86f4a9a5 | Blue Swirl | dev = qdev_try_create(&isabus->qbus, name); |
153 | 86f4a9a5 | Blue Swirl | return DO_UPCAST(ISADevice, qdev, dev);
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154 | 86f4a9a5 | Blue Swirl | } |
155 | 86f4a9a5 | Blue Swirl | |
156 | 924f6d72 | Gerd Hoffmann | ISADevice *isa_create_simple(const char *name) |
157 | 924f6d72 | Gerd Hoffmann | { |
158 | 924f6d72 | Gerd Hoffmann | ISADevice *dev; |
159 | 924f6d72 | Gerd Hoffmann | |
160 | 924f6d72 | Gerd Hoffmann | dev = isa_create(name); |
161 | 3f66aa9c | Markus Armbruster | qdev_init_nofail(&dev->qdev); |
162 | 924f6d72 | Gerd Hoffmann | return dev;
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163 | 924f6d72 | Gerd Hoffmann | } |
164 | 924f6d72 | Gerd Hoffmann | |
165 | 2091ba23 | Gerd Hoffmann | static void isabus_dev_print(Monitor *mon, DeviceState *dev, int indent) |
166 | 2091ba23 | Gerd Hoffmann | { |
167 | 2091ba23 | Gerd Hoffmann | ISADevice *d = DO_UPCAST(ISADevice, qdev, dev); |
168 | 2091ba23 | Gerd Hoffmann | |
169 | 2091ba23 | Gerd Hoffmann | if (d->isairq[1] != -1) { |
170 | 2091ba23 | Gerd Hoffmann | monitor_printf(mon, "%*sisa irqs %d,%d\n", indent, "", |
171 | 2091ba23 | Gerd Hoffmann | d->isairq[0], d->isairq[1]); |
172 | 2091ba23 | Gerd Hoffmann | } else if (d->isairq[0] != -1) { |
173 | 2091ba23 | Gerd Hoffmann | monitor_printf(mon, "%*sisa irq %d\n", indent, "", |
174 | 2091ba23 | Gerd Hoffmann | d->isairq[0]);
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175 | 2091ba23 | Gerd Hoffmann | } |
176 | 2091ba23 | Gerd Hoffmann | } |
177 | 2091ba23 | Gerd Hoffmann | |
178 | 81a322d4 | Gerd Hoffmann | static int isabus_bridge_init(SysBusDevice *dev) |
179 | 2091ba23 | Gerd Hoffmann | { |
180 | 2091ba23 | Gerd Hoffmann | /* nothing */
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181 | 81a322d4 | Gerd Hoffmann | return 0; |
182 | 2091ba23 | Gerd Hoffmann | } |
183 | 2091ba23 | Gerd Hoffmann | |
184 | 2091ba23 | Gerd Hoffmann | static SysBusDeviceInfo isabus_bridge_info = {
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185 | 2091ba23 | Gerd Hoffmann | .init = isabus_bridge_init, |
186 | 2091ba23 | Gerd Hoffmann | .qdev.name = "isabus-bridge",
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187 | 779206de | Gleb Natapov | .qdev.fw_name = "isa",
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188 | 2091ba23 | Gerd Hoffmann | .qdev.size = sizeof(SysBusDevice),
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189 | 787aa97a | Gerd Hoffmann | .qdev.no_user = 1,
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190 | 2091ba23 | Gerd Hoffmann | }; |
191 | 2091ba23 | Gerd Hoffmann | |
192 | 2091ba23 | Gerd Hoffmann | static void isabus_register_devices(void) |
193 | 2091ba23 | Gerd Hoffmann | { |
194 | 2091ba23 | Gerd Hoffmann | sysbus_register_withprop(&isabus_bridge_info); |
195 | 2091ba23 | Gerd Hoffmann | } |
196 | 2091ba23 | Gerd Hoffmann | |
197 | 6a26e119 | Gleb Natapov | static char *isabus_get_fw_dev_path(DeviceState *dev) |
198 | 6a26e119 | Gleb Natapov | { |
199 | 6a26e119 | Gleb Natapov | ISADevice *d = (ISADevice*)dev; |
200 | 6a26e119 | Gleb Natapov | char path[40]; |
201 | 6a26e119 | Gleb Natapov | int off;
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202 | 6a26e119 | Gleb Natapov | |
203 | 6a26e119 | Gleb Natapov | off = snprintf(path, sizeof(path), "%s", qdev_fw_name(dev)); |
204 | ebf47c24 | Richard Henderson | if (d->ioport_id) {
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205 | ebf47c24 | Richard Henderson | snprintf(path + off, sizeof(path) - off, "@%04x", d->ioport_id); |
206 | 6a26e119 | Gleb Natapov | } |
207 | 6a26e119 | Gleb Natapov | |
208 | 6a26e119 | Gleb Natapov | return strdup(path);
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209 | 6a26e119 | Gleb Natapov | } |
210 | 6a26e119 | Gleb Natapov | |
211 | c839adec | Avi Kivity | MemoryRegion *isa_address_space(ISADevice *dev) |
212 | c839adec | Avi Kivity | { |
213 | c839adec | Avi Kivity | return get_system_memory();
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214 | c839adec | Avi Kivity | } |
215 | c839adec | Avi Kivity | |
216 | 2091ba23 | Gerd Hoffmann | device_init(isabus_register_devices) |