root / hw / ide / mmio.c @ 216db403
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1 | 3d2bf4a1 | Gerd Hoffmann | /*
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2 | 3d2bf4a1 | Gerd Hoffmann | * QEMU IDE Emulation: mmio support (for embedded).
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3 | 3d2bf4a1 | Gerd Hoffmann | *
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4 | 3d2bf4a1 | Gerd Hoffmann | * Copyright (c) 2003 Fabrice Bellard
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5 | 3d2bf4a1 | Gerd Hoffmann | * Copyright (c) 2006 Openedhand Ltd.
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6 | 3d2bf4a1 | Gerd Hoffmann | *
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7 | 3d2bf4a1 | Gerd Hoffmann | * Permission is hereby granted, free of charge, to any person obtaining a copy
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8 | 3d2bf4a1 | Gerd Hoffmann | * of this software and associated documentation files (the "Software"), to deal
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9 | 3d2bf4a1 | Gerd Hoffmann | * in the Software without restriction, including without limitation the rights
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10 | 3d2bf4a1 | Gerd Hoffmann | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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11 | 3d2bf4a1 | Gerd Hoffmann | * copies of the Software, and to permit persons to whom the Software is
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12 | 3d2bf4a1 | Gerd Hoffmann | * furnished to do so, subject to the following conditions:
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13 | 3d2bf4a1 | Gerd Hoffmann | *
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14 | 3d2bf4a1 | Gerd Hoffmann | * The above copyright notice and this permission notice shall be included in
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15 | 3d2bf4a1 | Gerd Hoffmann | * all copies or substantial portions of the Software.
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16 | 3d2bf4a1 | Gerd Hoffmann | *
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17 | 3d2bf4a1 | Gerd Hoffmann | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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18 | 3d2bf4a1 | Gerd Hoffmann | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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19 | 3d2bf4a1 | Gerd Hoffmann | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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20 | 3d2bf4a1 | Gerd Hoffmann | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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21 | 3d2bf4a1 | Gerd Hoffmann | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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22 | 3d2bf4a1 | Gerd Hoffmann | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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23 | 3d2bf4a1 | Gerd Hoffmann | * THE SOFTWARE.
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24 | 3d2bf4a1 | Gerd Hoffmann | */
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25 | 6b2578d6 | Andreas Färber | #include "hw/hw.h" |
26 | 6b2578d6 | Andreas Färber | #include "hw/sysbus.h" |
27 | 737e150e | Paolo Bonzini | #include "block/block.h" |
28 | 9c17d615 | Paolo Bonzini | #include "sysemu/dma.h" |
29 | 59f2a787 | Gerd Hoffmann | |
30 | 59f2a787 | Gerd Hoffmann | #include <hw/ide/internal.h> |
31 | 3d2bf4a1 | Gerd Hoffmann | |
32 | 3d2bf4a1 | Gerd Hoffmann | /***********************************************************/
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33 | 3d2bf4a1 | Gerd Hoffmann | /* MMIO based ide port
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34 | 3d2bf4a1 | Gerd Hoffmann | * This emulates IDE device connected directly to the CPU bus without
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35 | 3d2bf4a1 | Gerd Hoffmann | * dedicated ide controller, which is often seen on embedded boards.
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36 | 3d2bf4a1 | Gerd Hoffmann | */
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37 | 3d2bf4a1 | Gerd Hoffmann | |
38 | 6b2578d6 | Andreas Färber | #define TYPE_MMIO_IDE "mmio-ide" |
39 | 6b2578d6 | Andreas Färber | #define MMIO_IDE(obj) OBJECT_CHECK(MMIOState, (obj), TYPE_MMIO_IDE)
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40 | 6b2578d6 | Andreas Färber | |
41 | 6b2578d6 | Andreas Färber | typedef struct MMIOIDEState { |
42 | 6b2578d6 | Andreas Färber | /*< private >*/
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43 | 6b2578d6 | Andreas Färber | SysBusDevice parent_obj; |
44 | 6b2578d6 | Andreas Färber | /*< public >*/
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45 | 6b2578d6 | Andreas Färber | |
46 | 0ce51e92 | Juan Quintela | IDEBus bus; |
47 | 6b2578d6 | Andreas Färber | |
48 | 6b2578d6 | Andreas Färber | uint32_t shift; |
49 | 6b2578d6 | Andreas Färber | qemu_irq irq; |
50 | 9d7f1b9a | Avi Kivity | MemoryRegion iomem1, iomem2; |
51 | 3d2bf4a1 | Gerd Hoffmann | } MMIOState; |
52 | 3d2bf4a1 | Gerd Hoffmann | |
53 | 6b2578d6 | Andreas Färber | static void mmio_ide_reset(DeviceState *dev) |
54 | 4a643563 | Blue Swirl | { |
55 | 6b2578d6 | Andreas Färber | MMIOState *s = MMIO_IDE(dev); |
56 | 4a643563 | Blue Swirl | |
57 | 4a643563 | Blue Swirl | ide_bus_reset(&s->bus); |
58 | 4a643563 | Blue Swirl | } |
59 | 4a643563 | Blue Swirl | |
60 | a8170e5e | Avi Kivity | static uint64_t mmio_ide_read(void *opaque, hwaddr addr, |
61 | 9d7f1b9a | Avi Kivity | unsigned size)
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62 | 3d2bf4a1 | Gerd Hoffmann | { |
63 | 18c0fb30 | Juan Quintela | MMIOState *s = opaque; |
64 | 3d2bf4a1 | Gerd Hoffmann | addr >>= s->shift; |
65 | 3d2bf4a1 | Gerd Hoffmann | if (addr & 7) |
66 | 0ce51e92 | Juan Quintela | return ide_ioport_read(&s->bus, addr);
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67 | 3d2bf4a1 | Gerd Hoffmann | else
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68 | 0ce51e92 | Juan Quintela | return ide_data_readw(&s->bus, 0); |
69 | 3d2bf4a1 | Gerd Hoffmann | } |
70 | 3d2bf4a1 | Gerd Hoffmann | |
71 | a8170e5e | Avi Kivity | static void mmio_ide_write(void *opaque, hwaddr addr, |
72 | 9d7f1b9a | Avi Kivity | uint64_t val, unsigned size)
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73 | 3d2bf4a1 | Gerd Hoffmann | { |
74 | 18c0fb30 | Juan Quintela | MMIOState *s = opaque; |
75 | 3d2bf4a1 | Gerd Hoffmann | addr >>= s->shift; |
76 | 3d2bf4a1 | Gerd Hoffmann | if (addr & 7) |
77 | 0ce51e92 | Juan Quintela | ide_ioport_write(&s->bus, addr, val); |
78 | 3d2bf4a1 | Gerd Hoffmann | else
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79 | 0ce51e92 | Juan Quintela | ide_data_writew(&s->bus, 0, val);
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80 | 3d2bf4a1 | Gerd Hoffmann | } |
81 | 3d2bf4a1 | Gerd Hoffmann | |
82 | 9d7f1b9a | Avi Kivity | static const MemoryRegionOps mmio_ide_ops = { |
83 | 9d7f1b9a | Avi Kivity | .read = mmio_ide_read, |
84 | 9d7f1b9a | Avi Kivity | .write = mmio_ide_write, |
85 | 9d7f1b9a | Avi Kivity | .endianness = DEVICE_NATIVE_ENDIAN, |
86 | 3d2bf4a1 | Gerd Hoffmann | }; |
87 | 3d2bf4a1 | Gerd Hoffmann | |
88 | a8170e5e | Avi Kivity | static uint64_t mmio_ide_status_read(void *opaque, hwaddr addr, |
89 | 9d7f1b9a | Avi Kivity | unsigned size)
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90 | 3d2bf4a1 | Gerd Hoffmann | { |
91 | 18c0fb30 | Juan Quintela | MMIOState *s= opaque; |
92 | 0ce51e92 | Juan Quintela | return ide_status_read(&s->bus, 0); |
93 | 3d2bf4a1 | Gerd Hoffmann | } |
94 | 3d2bf4a1 | Gerd Hoffmann | |
95 | a8170e5e | Avi Kivity | static void mmio_ide_cmd_write(void *opaque, hwaddr addr, |
96 | 9d7f1b9a | Avi Kivity | uint64_t val, unsigned size)
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97 | 3d2bf4a1 | Gerd Hoffmann | { |
98 | 18c0fb30 | Juan Quintela | MMIOState *s = opaque; |
99 | 0ce51e92 | Juan Quintela | ide_cmd_write(&s->bus, 0, val);
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100 | 3d2bf4a1 | Gerd Hoffmann | } |
101 | 3d2bf4a1 | Gerd Hoffmann | |
102 | 9d7f1b9a | Avi Kivity | static const MemoryRegionOps mmio_ide_cs_ops = { |
103 | 9d7f1b9a | Avi Kivity | .read = mmio_ide_status_read, |
104 | 9d7f1b9a | Avi Kivity | .write = mmio_ide_cmd_write, |
105 | 9d7f1b9a | Avi Kivity | .endianness = DEVICE_NATIVE_ENDIAN, |
106 | 3d2bf4a1 | Gerd Hoffmann | }; |
107 | 3d2bf4a1 | Gerd Hoffmann | |
108 | 24daf35c | Juan Quintela | static const VMStateDescription vmstate_ide_mmio = { |
109 | 24daf35c | Juan Quintela | .name = "mmio-ide",
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110 | 24daf35c | Juan Quintela | .version_id = 3,
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111 | 24daf35c | Juan Quintela | .minimum_version_id = 0,
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112 | 24daf35c | Juan Quintela | .minimum_version_id_old = 0,
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113 | 24daf35c | Juan Quintela | .fields = (VMStateField []) { |
114 | 24daf35c | Juan Quintela | VMSTATE_IDE_BUS(bus, MMIOState), |
115 | 24daf35c | Juan Quintela | VMSTATE_IDE_DRIVES(bus.ifs, MMIOState), |
116 | 24daf35c | Juan Quintela | VMSTATE_END_OF_LIST() |
117 | 24daf35c | Juan Quintela | } |
118 | 24daf35c | Juan Quintela | }; |
119 | 2bcbf7e4 | Gerd Hoffmann | |
120 | 6b2578d6 | Andreas Färber | static void mmio_ide_realizefn(DeviceState *dev, Error **errp) |
121 | 3d2bf4a1 | Gerd Hoffmann | { |
122 | 6b2578d6 | Andreas Färber | SysBusDevice *d = SYS_BUS_DEVICE(dev); |
123 | 6b2578d6 | Andreas Färber | MMIOState *s = MMIO_IDE(dev); |
124 | 3d2bf4a1 | Gerd Hoffmann | |
125 | 6b2578d6 | Andreas Färber | ide_init2(&s->bus, s->irq); |
126 | 3d2bf4a1 | Gerd Hoffmann | |
127 | 1437c94b | Paolo Bonzini | memory_region_init_io(&s->iomem1, OBJECT(s), &mmio_ide_ops, s, |
128 | 6b2578d6 | Andreas Färber | "ide-mmio.1", 16 << s->shift); |
129 | 1437c94b | Paolo Bonzini | memory_region_init_io(&s->iomem2, OBJECT(s), &mmio_ide_cs_ops, s, |
130 | 6b2578d6 | Andreas Färber | "ide-mmio.2", 2 << s->shift); |
131 | 6b2578d6 | Andreas Färber | sysbus_init_mmio(d, &s->iomem1); |
132 | 6b2578d6 | Andreas Färber | sysbus_init_mmio(d, &s->iomem2); |
133 | 6b2578d6 | Andreas Färber | } |
134 | 6b2578d6 | Andreas Färber | |
135 | 6b2578d6 | Andreas Färber | static void mmio_ide_initfn(Object *obj) |
136 | 6b2578d6 | Andreas Färber | { |
137 | 6b2578d6 | Andreas Färber | SysBusDevice *d = SYS_BUS_DEVICE(obj); |
138 | 6b2578d6 | Andreas Färber | MMIOState *s = MMIO_IDE(obj); |
139 | 6b2578d6 | Andreas Färber | |
140 | c6baf942 | Andreas Färber | ide_bus_new(&s->bus, sizeof(s->bus), DEVICE(obj), 0, 2); |
141 | 6b2578d6 | Andreas Färber | sysbus_init_irq(d, &s->irq); |
142 | 6b2578d6 | Andreas Färber | } |
143 | 6b2578d6 | Andreas Färber | |
144 | 6b2578d6 | Andreas Färber | static Property mmio_ide_properties[] = {
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145 | 6b2578d6 | Andreas Färber | DEFINE_PROP_UINT32("shift", MMIOState, shift, 0), |
146 | 6b2578d6 | Andreas Färber | DEFINE_PROP_END_OF_LIST() |
147 | 6b2578d6 | Andreas Färber | }; |
148 | 6b2578d6 | Andreas Färber | |
149 | 6b2578d6 | Andreas Färber | static void mmio_ide_class_init(ObjectClass *oc, void *data) |
150 | 6b2578d6 | Andreas Färber | { |
151 | 6b2578d6 | Andreas Färber | DeviceClass *dc = DEVICE_CLASS(oc); |
152 | 6b2578d6 | Andreas Färber | |
153 | 6b2578d6 | Andreas Färber | dc->realize = mmio_ide_realizefn; |
154 | 6b2578d6 | Andreas Färber | dc->reset = mmio_ide_reset; |
155 | 6b2578d6 | Andreas Färber | dc->props = mmio_ide_properties; |
156 | 6b2578d6 | Andreas Färber | dc->vmsd = &vmstate_ide_mmio; |
157 | 6b2578d6 | Andreas Färber | } |
158 | 6b2578d6 | Andreas Färber | |
159 | 6b2578d6 | Andreas Färber | static const TypeInfo mmio_ide_type_info = { |
160 | 6b2578d6 | Andreas Färber | .name = TYPE_MMIO_IDE, |
161 | 6b2578d6 | Andreas Färber | .parent = TYPE_SYS_BUS_DEVICE, |
162 | 6b2578d6 | Andreas Färber | .instance_size = sizeof(MMIOState),
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163 | 6b2578d6 | Andreas Färber | .instance_init = mmio_ide_initfn, |
164 | 6b2578d6 | Andreas Färber | .class_init = mmio_ide_class_init, |
165 | 6b2578d6 | Andreas Färber | }; |
166 | 6b2578d6 | Andreas Färber | |
167 | 6b2578d6 | Andreas Färber | static void mmio_ide_register_types(void) |
168 | 6b2578d6 | Andreas Färber | { |
169 | 6b2578d6 | Andreas Färber | type_register_static(&mmio_ide_type_info); |
170 | 6b2578d6 | Andreas Färber | } |
171 | 6b2578d6 | Andreas Färber | |
172 | 6b2578d6 | Andreas Färber | void mmio_ide_init_drives(DeviceState *dev, DriveInfo *hd0, DriveInfo *hd1)
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173 | 6b2578d6 | Andreas Färber | { |
174 | 6b2578d6 | Andreas Färber | MMIOState *s = MMIO_IDE(dev); |
175 | 6b2578d6 | Andreas Färber | |
176 | 6b2578d6 | Andreas Färber | if (hd0 != NULL) { |
177 | 6b2578d6 | Andreas Färber | ide_create_drive(&s->bus, 0, hd0);
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178 | 6b2578d6 | Andreas Färber | } |
179 | 6b2578d6 | Andreas Färber | if (hd1 != NULL) { |
180 | 6b2578d6 | Andreas Färber | ide_create_drive(&s->bus, 1, hd1);
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181 | 6b2578d6 | Andreas Färber | } |
182 | 3d2bf4a1 | Gerd Hoffmann | } |
183 | 3d2bf4a1 | Gerd Hoffmann | |
184 | 6b2578d6 | Andreas Färber | type_init(mmio_ide_register_types) |