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pci: Derive PCI host bridges from TYPE_PCI_HOST_BRIDGE
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1 /*
2 * QEMU Grackle PCI host (heathrow OldWorld PowerMac)
3 *
4 * Copyright (c) 2006-2007 Fabrice Bellard
5 * Copyright (c) 2007 Jocelyn Mayer
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26 #include "pci_host.h"
27 #include "ppc_mac.h"
28 #include "pci.h"
29
30 /* debug Grackle */
31 //#define DEBUG_GRACKLE
32
33 #ifdef DEBUG_GRACKLE
34 #define GRACKLE_DPRINTF(fmt, ...) \
35 do { printf("GRACKLE: " fmt , ## __VA_ARGS__); } while (0)
36 #else
37 #define GRACKLE_DPRINTF(fmt, ...)
38 #endif
39
40 #define GRACKLE_PCI_HOST_BRIDGE(obj) \
41 OBJECT_CHECK(GrackleState, (obj), TYPE_GRACKLE_PCI_HOST_BRIDGE)
42
43 typedef struct GrackleState {
44 PCIHostState host_state;
45
46 MemoryRegion pci_mmio;
47 MemoryRegion pci_hole;
48 } GrackleState;
49
50 /* Don't know if this matches real hardware, but it agrees with OHW. */
51 static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
52 {
53 return (irq_num + (pci_dev->devfn >> 3)) & 3;
54 }
55
56 static void pci_grackle_set_irq(void *opaque, int irq_num, int level)
57 {
58 qemu_irq *pic = opaque;
59
60 GRACKLE_DPRINTF("set_irq num %d level %d\n", irq_num, level);
61 qemu_set_irq(pic[irq_num + 0x15], level);
62 }
63
64 PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic,
65 MemoryRegion *address_space_mem,
66 MemoryRegion *address_space_io)
67 {
68 DeviceState *dev;
69 SysBusDevice *s;
70 PCIHostState *phb;
71 GrackleState *d;
72
73 dev = qdev_create(NULL, TYPE_GRACKLE_PCI_HOST_BRIDGE);
74 qdev_init_nofail(dev);
75 s = SYS_BUS_DEVICE(dev);
76 phb = PCI_HOST_BRIDGE(dev);
77 d = GRACKLE_PCI_HOST_BRIDGE(dev);
78
79 memory_region_init(&d->pci_mmio, "pci-mmio", 0x100000000ULL);
80 memory_region_init_alias(&d->pci_hole, "pci-hole", &d->pci_mmio,
81 0x80000000ULL, 0x7e000000ULL);
82 memory_region_add_subregion(address_space_mem, 0x80000000ULL,
83 &d->pci_hole);
84
85 phb->bus = pci_register_bus(dev, "pci",
86 pci_grackle_set_irq,
87 pci_grackle_map_irq,
88 pic,
89 &d->pci_mmio,
90 address_space_io,
91 0, 4);
92
93 pci_create_simple(phb->bus, 0, "grackle");
94
95 sysbus_mmio_map(s, 0, base);
96 sysbus_mmio_map(s, 1, base + 0x00200000);
97
98 return phb->bus;
99 }
100
101 static int pci_grackle_init_device(SysBusDevice *dev)
102 {
103 PCIHostState *phb;
104
105 phb = PCI_HOST_BRIDGE(dev);
106
107 memory_region_init_io(&phb->conf_mem, &pci_host_conf_le_ops,
108 dev, "pci-conf-idx", 0x1000);
109 memory_region_init_io(&phb->data_mem, &pci_host_data_le_ops,
110 dev, "pci-data-idx", 0x1000);
111 sysbus_init_mmio(dev, &phb->conf_mem);
112 sysbus_init_mmio(dev, &phb->data_mem);
113
114 return 0;
115 }
116
117 static int grackle_pci_host_init(PCIDevice *d)
118 {
119 d->config[0x09] = 0x01;
120 return 0;
121 }
122
123 static void grackle_pci_class_init(ObjectClass *klass, void *data)
124 {
125 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
126 DeviceClass *dc = DEVICE_CLASS(klass);
127
128 k->init = grackle_pci_host_init;
129 k->vendor_id = PCI_VENDOR_ID_MOTOROLA;
130 k->device_id = PCI_DEVICE_ID_MOTOROLA_MPC106;
131 k->revision = 0x00;
132 k->class_id = PCI_CLASS_BRIDGE_HOST;
133 dc->no_user = 1;
134 }
135
136 static const TypeInfo grackle_pci_info = {
137 .name = "grackle",
138 .parent = TYPE_PCI_DEVICE,
139 .instance_size = sizeof(PCIDevice),
140 .class_init = grackle_pci_class_init,
141 };
142
143 static void pci_grackle_class_init(ObjectClass *klass, void *data)
144 {
145 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
146 DeviceClass *dc = DEVICE_CLASS(klass);
147
148 k->init = pci_grackle_init_device;
149 dc->no_user = 1;
150 }
151
152 static const TypeInfo grackle_pci_host_info = {
153 .name = TYPE_GRACKLE_PCI_HOST_BRIDGE,
154 .parent = TYPE_PCI_HOST_BRIDGE,
155 .instance_size = sizeof(GrackleState),
156 .class_init = pci_grackle_class_init,
157 };
158
159 static void grackle_register_types(void)
160 {
161 type_register_static(&grackle_pci_info);
162 type_register_static(&grackle_pci_host_info);
163 }
164
165 type_init(grackle_register_types)