linux-user: stack_base is now mandatory on all targets
[qemu.git] / hw / grackle_pci.c
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 "sysbus.h"
27 #include "ppc_mac.h"
28 #include "pci.h"
29 #include "pci_host.h"
30
31 /* debug Grackle */
32 //#define DEBUG_GRACKLE
33
34 #ifdef DEBUG_GRACKLE
35 #define GRACKLE_DPRINTF(fmt, ...) \
36 do { printf("GRACKLE: " fmt , ## __VA_ARGS__); } while (0)
37 #else
38 #define GRACKLE_DPRINTF(fmt, ...)
39 #endif
40
41 typedef struct GrackleState {
42 SysBusDevice busdev;
43 PCIHostState host_state;
44 MemoryRegion pci_mmio;
45 MemoryRegion pci_hole;
46 } GrackleState;
47
48 /* Don't know if this matches real hardware, but it agrees with OHW. */
49 static int pci_grackle_map_irq(PCIDevice *pci_dev, int irq_num)
50 {
51 return (irq_num + (pci_dev->devfn >> 3)) & 3;
52 }
53
54 static void pci_grackle_set_irq(void *opaque, int irq_num, int level)
55 {
56 qemu_irq *pic = opaque;
57
58 GRACKLE_DPRINTF("set_irq num %d level %d\n", irq_num, level);
59 qemu_set_irq(pic[irq_num + 0x15], level);
60 }
61
62 static void pci_grackle_reset(void *opaque)
63 {
64 }
65
66 PCIBus *pci_grackle_init(uint32_t base, qemu_irq *pic,
67 MemoryRegion *address_space_mem,
68 MemoryRegion *address_space_io)
69 {
70 DeviceState *dev;
71 SysBusDevice *s;
72 GrackleState *d;
73
74 dev = qdev_create(NULL, "grackle-pcihost");
75 qdev_init_nofail(dev);
76 s = sysbus_from_qdev(dev);
77 d = FROM_SYSBUS(GrackleState, s);
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 d->host_state.bus = pci_register_bus(&d->busdev.qdev, "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(d->host_state.bus, 0, "grackle");
94
95 sysbus_mmio_map(s, 0, base);
96 sysbus_mmio_map(s, 1, base + 0x00200000);
97
98 return d->host_state.bus;
99 }
100
101 static int pci_grackle_init_device(SysBusDevice *dev)
102 {
103 GrackleState *s;
104
105 s = FROM_SYSBUS(GrackleState, dev);
106
107 memory_region_init_io(&s->host_state.conf_mem, &pci_host_conf_le_ops,
108 &s->host_state, "pci-conf-idx", 0x1000);
109 memory_region_init_io(&s->host_state.data_mem, &pci_host_data_le_ops,
110 &s->host_state, "pci-data-idx", 0x1000);
111 sysbus_init_mmio(dev, &s->host_state.conf_mem);
112 sysbus_init_mmio(dev, &s->host_state.data_mem);
113
114 qemu_register_reset(pci_grackle_reset, &s->host_state);
115 return 0;
116 }
117
118 static int grackle_pci_host_init(PCIDevice *d)
119 {
120 d->config[0x09] = 0x01;
121 return 0;
122 }
123
124 static void grackle_pci_class_init(ObjectClass *klass, void *data)
125 {
126 PCIDeviceClass *k = PCI_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 }
134
135 static DeviceInfo grackle_pci_info = {
136 .name = "grackle",
137 .size = sizeof(PCIDevice),
138 .no_user = 1,
139 .class_init = grackle_pci_class_init,
140 };
141
142 static void pci_grackle_class_init(ObjectClass *klass, void *data)
143 {
144 SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
145
146 k->init = pci_grackle_init_device;
147 }
148
149 static DeviceInfo grackle_pci_host_info = {
150 .name = "grackle-pcihost",
151 .size = sizeof(GrackleState),
152 .no_user = 1,
153 .class_init = pci_grackle_class_init,
154 };
155
156 static void grackle_register_devices(void)
157 {
158 sysbus_qdev_register(&grackle_pci_host_info);
159 pci_qdev_register(&grackle_pci_info);
160 }
161
162 device_init(grackle_register_devices)