linux-user: stack_base is now mandatory on all targets
[qemu.git] / hw / macio.c
1 /*
2 * PowerMac MacIO device emulation
3 *
4 * Copyright (c) 2005-2007 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 #include "hw.h"
26 #include "ppc_mac.h"
27 #include "pci.h"
28 #include "escc.h"
29
30 typedef struct MacIOState
31 {
32 PCIDevice parent;
33 int is_oldworld;
34 MemoryRegion bar;
35 MemoryRegion *pic_mem;
36 MemoryRegion *dbdma_mem;
37 MemoryRegion *cuda_mem;
38 MemoryRegion *escc_mem;
39 void *nvram;
40 int nb_ide;
41 MemoryRegion *ide_mem[4];
42 } MacIOState;
43
44 static void macio_bar_setup(MacIOState *macio_state)
45 {
46 int i;
47 MemoryRegion *bar = &macio_state->bar;
48
49 memory_region_init(bar, "macio", 0x80000);
50 if (macio_state->pic_mem) {
51 if (macio_state->is_oldworld) {
52 /* Heathrow PIC */
53 memory_region_add_subregion(bar, 0x00000, macio_state->pic_mem);
54 } else {
55 /* OpenPIC */
56 memory_region_add_subregion(bar, 0x40000, macio_state->pic_mem);
57 }
58 }
59 if (macio_state->dbdma_mem) {
60 memory_region_add_subregion(bar, 0x08000, macio_state->dbdma_mem);
61 }
62 if (macio_state->escc_mem) {
63 memory_region_add_subregion(bar, 0x13000, macio_state->escc_mem);
64 }
65 if (macio_state->cuda_mem) {
66 memory_region_add_subregion(bar, 0x16000, macio_state->cuda_mem);
67 }
68 for (i = 0; i < macio_state->nb_ide; i++) {
69 if (macio_state->ide_mem[i]) {
70 memory_region_add_subregion(bar, 0x1f000 + (i * 0x1000),
71 macio_state->ide_mem[i]);
72 }
73 }
74 if (macio_state->nvram != NULL)
75 macio_nvram_setup_bar(macio_state->nvram, bar, 0x60000);
76 }
77
78 static int macio_initfn(PCIDevice *d)
79 {
80 d->config[0x3d] = 0x01; // interrupt on pin 1
81 return 0;
82 }
83
84 static void macio_class_init(ObjectClass *klass, void *data)
85 {
86 PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
87
88 k->init = macio_initfn;
89 k->vendor_id = PCI_VENDOR_ID_APPLE;
90 k->class_id = PCI_CLASS_OTHERS << 8;
91 }
92
93 static DeviceInfo macio_info = {
94 .name = "macio",
95 .size = sizeof(MacIOState),
96 .class_init = macio_class_init,
97 };
98
99 static void macio_register(void)
100 {
101 pci_qdev_register(&macio_info);
102 }
103
104 device_init(macio_register);
105
106 void macio_init (PCIBus *bus, int device_id, int is_oldworld,
107 MemoryRegion *pic_mem, MemoryRegion *dbdma_mem,
108 MemoryRegion *cuda_mem, void *nvram,
109 int nb_ide, MemoryRegion **ide_mem,
110 MemoryRegion *escc_mem)
111 {
112 PCIDevice *d;
113 MacIOState *macio_state;
114 int i;
115
116 d = pci_create_simple(bus, -1, "macio");
117
118 macio_state = DO_UPCAST(MacIOState, parent, d);
119 macio_state->is_oldworld = is_oldworld;
120 macio_state->pic_mem = pic_mem;
121 macio_state->dbdma_mem = dbdma_mem;
122 macio_state->cuda_mem = cuda_mem;
123 macio_state->escc_mem = escc_mem;
124 macio_state->nvram = nvram;
125 if (nb_ide > 4)
126 nb_ide = 4;
127 macio_state->nb_ide = nb_ide;
128 for (i = 0; i < nb_ide; i++)
129 macio_state->ide_mem[i] = ide_mem[i];
130 for (; i < 4; i++)
131 macio_state->ide_mem[i] = NULL;
132 /* Note: this code is strongly inspirated from the corresponding code
133 in PearPC */
134
135 pci_config_set_device_id(d->config, device_id);
136
137 macio_bar_setup(macio_state);
138 pci_register_bar(d, 0, PCI_BASE_ADDRESS_SPACE_MEMORY, &macio_state->bar);
139 }