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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" | |
20 | #include "sysemu.h" | |
21 | #include "isa.h" | |
22 | ||
23 | struct ISABus { | |
24 | BusState qbus; | |
25 | }; | |
26 | static ISABus *isabus; | |
27 | ||
28 | static struct BusInfo isa_bus_info = { | |
29 | .name = "ISA", | |
30 | .size = sizeof(ISABus), | |
31 | .props = (Property[]) { | |
32 | { | |
33 | .name = "iobase", | |
34 | .info = &qdev_prop_hex32, | |
35 | .offset = offsetof(ISADevice, iobase[0]), | |
36 | .defval = (uint32_t[]) { -1 }, | |
37 | },{ | |
38 | .name = "iobase2", | |
39 | .info = &qdev_prop_hex32, | |
40 | .offset = offsetof(ISADevice, iobase[1]), | |
41 | .defval = (uint32_t[]) { -1 }, | |
42 | }, | |
43 | {/* end of list */} | |
44 | } | |
45 | }; | |
46 | ||
47 | ISABus *isa_bus_new(DeviceState *dev) | |
48 | { | |
49 | if (isabus) { | |
50 | fprintf(stderr, "Can't create a second ISA bus\n"); | |
51 | return NULL; | |
52 | } | |
53 | ||
54 | isabus = FROM_QBUS(ISABus, qbus_create(&isa_bus_info, dev, NULL)); | |
55 | return isabus; | |
56 | } | |
57 | ||
58 | void isa_connect_irq(ISADevice *dev, int n, qemu_irq irq) | |
59 | { | |
60 | assert(n >= 0 && n < dev->nirqs); | |
61 | if (dev->irqs[n]) | |
62 | *dev->irqs[n] = irq; | |
63 | } | |
64 | ||
65 | void isa_init_irq(ISADevice *dev, qemu_irq *p) | |
66 | { | |
67 | assert(dev->nirqs < ARRAY_SIZE(dev->irqs)); | |
68 | dev->irqs[dev->nirqs] = p; | |
69 | dev->nirqs++; | |
70 | } | |
71 | ||
72 | static void isa_qdev_init(DeviceState *qdev, DeviceInfo *base) | |
73 | { | |
74 | ISADevice *dev = DO_UPCAST(ISADevice, qdev, qdev); | |
75 | ISADeviceInfo *info = DO_UPCAST(ISADeviceInfo, qdev, base); | |
76 | ||
77 | info->init(dev); | |
78 | } | |
79 | ||
80 | void isa_qdev_register(ISADeviceInfo *info) | |
81 | { | |
82 | info->qdev.init = isa_qdev_init; | |
83 | info->qdev.bus_info = &isa_bus_info; | |
84 | qdev_register(&info->qdev); | |
85 | } | |
86 | ||
87 | ISADevice *isa_create_simple(const char *name, uint32_t iobase, uint32_t iobase2) | |
88 | { | |
89 | DeviceState *dev; | |
90 | ISADevice *isa; | |
91 | ||
92 | if (!isabus) { | |
93 | fprintf(stderr, "Tried to create isa device %s with no isa bus present.\n", name); | |
94 | return NULL; | |
95 | } | |
96 | dev = qdev_create(&isabus->qbus, name); | |
97 | isa = DO_UPCAST(ISADevice, qdev, dev); | |
98 | isa->iobase[0] = iobase; | |
99 | isa->iobase[1] = iobase2; | |
100 | qdev_init(dev); | |
101 | return isa; | |
102 | } |