root / hw / ide / mmio.c @ dd4239d6
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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 | 59f2a787 | Gerd Hoffmann | #include <hw/hw.h> |
26 | 3d2bf4a1 | Gerd Hoffmann | #include "block.h" |
27 | 3d2bf4a1 | Gerd Hoffmann | #include "block_int.h" |
28 | 3d2bf4a1 | Gerd Hoffmann | #include "sysemu.h" |
29 | 3d2bf4a1 | Gerd Hoffmann | #include "dma.h" |
30 | 59f2a787 | Gerd Hoffmann | |
31 | 59f2a787 | Gerd Hoffmann | #include <hw/ide/internal.h> |
32 | 3d2bf4a1 | Gerd Hoffmann | |
33 | 3d2bf4a1 | Gerd Hoffmann | /***********************************************************/
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34 | 3d2bf4a1 | Gerd Hoffmann | /* MMIO based ide port
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35 | 3d2bf4a1 | Gerd Hoffmann | * This emulates IDE device connected directly to the CPU bus without
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36 | 3d2bf4a1 | Gerd Hoffmann | * dedicated ide controller, which is often seen on embedded boards.
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37 | 3d2bf4a1 | Gerd Hoffmann | */
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38 | 3d2bf4a1 | Gerd Hoffmann | |
39 | 3d2bf4a1 | Gerd Hoffmann | typedef struct { |
40 | 0ce51e92 | Juan Quintela | IDEBus bus; |
41 | 3d2bf4a1 | Gerd Hoffmann | int shift;
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42 | 3d2bf4a1 | Gerd Hoffmann | } MMIOState; |
43 | 3d2bf4a1 | Gerd Hoffmann | |
44 | 4a643563 | Blue Swirl | static void mmio_ide_reset(void *opaque) |
45 | 4a643563 | Blue Swirl | { |
46 | 4a643563 | Blue Swirl | MMIOState *s = opaque; |
47 | 4a643563 | Blue Swirl | |
48 | 4a643563 | Blue Swirl | ide_bus_reset(&s->bus); |
49 | 4a643563 | Blue Swirl | } |
50 | 4a643563 | Blue Swirl | |
51 | c227f099 | Anthony Liguori | static uint32_t mmio_ide_read (void *opaque, target_phys_addr_t addr) |
52 | 3d2bf4a1 | Gerd Hoffmann | { |
53 | 18c0fb30 | Juan Quintela | MMIOState *s = opaque; |
54 | 3d2bf4a1 | Gerd Hoffmann | addr >>= s->shift; |
55 | 3d2bf4a1 | Gerd Hoffmann | if (addr & 7) |
56 | 0ce51e92 | Juan Quintela | return ide_ioport_read(&s->bus, addr);
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57 | 3d2bf4a1 | Gerd Hoffmann | else
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58 | 0ce51e92 | Juan Quintela | return ide_data_readw(&s->bus, 0); |
59 | 3d2bf4a1 | Gerd Hoffmann | } |
60 | 3d2bf4a1 | Gerd Hoffmann | |
61 | c227f099 | Anthony Liguori | static void mmio_ide_write (void *opaque, target_phys_addr_t addr, |
62 | 3d2bf4a1 | Gerd Hoffmann | uint32_t val) |
63 | 3d2bf4a1 | Gerd Hoffmann | { |
64 | 18c0fb30 | Juan Quintela | MMIOState *s = opaque; |
65 | 3d2bf4a1 | Gerd Hoffmann | addr >>= s->shift; |
66 | 3d2bf4a1 | Gerd Hoffmann | if (addr & 7) |
67 | 0ce51e92 | Juan Quintela | ide_ioport_write(&s->bus, addr, val); |
68 | 3d2bf4a1 | Gerd Hoffmann | else
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69 | 0ce51e92 | Juan Quintela | ide_data_writew(&s->bus, 0, val);
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70 | 3d2bf4a1 | Gerd Hoffmann | } |
71 | 3d2bf4a1 | Gerd Hoffmann | |
72 | 3d2bf4a1 | Gerd Hoffmann | static CPUReadMemoryFunc * const mmio_ide_reads[] = { |
73 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_read, |
74 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_read, |
75 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_read, |
76 | 3d2bf4a1 | Gerd Hoffmann | }; |
77 | 3d2bf4a1 | Gerd Hoffmann | |
78 | 3d2bf4a1 | Gerd Hoffmann | static CPUWriteMemoryFunc * const mmio_ide_writes[] = { |
79 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_write, |
80 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_write, |
81 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_write, |
82 | 3d2bf4a1 | Gerd Hoffmann | }; |
83 | 3d2bf4a1 | Gerd Hoffmann | |
84 | c227f099 | Anthony Liguori | static uint32_t mmio_ide_status_read (void *opaque, target_phys_addr_t addr) |
85 | 3d2bf4a1 | Gerd Hoffmann | { |
86 | 18c0fb30 | Juan Quintela | MMIOState *s= opaque; |
87 | 0ce51e92 | Juan Quintela | return ide_status_read(&s->bus, 0); |
88 | 3d2bf4a1 | Gerd Hoffmann | } |
89 | 3d2bf4a1 | Gerd Hoffmann | |
90 | c227f099 | Anthony Liguori | static void mmio_ide_cmd_write (void *opaque, target_phys_addr_t addr, |
91 | 3d2bf4a1 | Gerd Hoffmann | uint32_t val) |
92 | 3d2bf4a1 | Gerd Hoffmann | { |
93 | 18c0fb30 | Juan Quintela | MMIOState *s = opaque; |
94 | 0ce51e92 | Juan Quintela | ide_cmd_write(&s->bus, 0, val);
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95 | 3d2bf4a1 | Gerd Hoffmann | } |
96 | 3d2bf4a1 | Gerd Hoffmann | |
97 | 3d2bf4a1 | Gerd Hoffmann | static CPUReadMemoryFunc * const mmio_ide_status[] = { |
98 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_status_read, |
99 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_status_read, |
100 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_status_read, |
101 | 3d2bf4a1 | Gerd Hoffmann | }; |
102 | 3d2bf4a1 | Gerd Hoffmann | |
103 | 3d2bf4a1 | Gerd Hoffmann | static CPUWriteMemoryFunc * const mmio_ide_cmd[] = { |
104 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_cmd_write, |
105 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_cmd_write, |
106 | 3d2bf4a1 | Gerd Hoffmann | mmio_ide_cmd_write, |
107 | 3d2bf4a1 | Gerd Hoffmann | }; |
108 | 3d2bf4a1 | Gerd Hoffmann | |
109 | 24daf35c | Juan Quintela | static const VMStateDescription vmstate_ide_mmio = { |
110 | 24daf35c | Juan Quintela | .name = "mmio-ide",
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111 | 24daf35c | Juan Quintela | .version_id = 3,
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112 | 24daf35c | Juan Quintela | .minimum_version_id = 0,
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113 | 24daf35c | Juan Quintela | .minimum_version_id_old = 0,
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114 | 24daf35c | Juan Quintela | .fields = (VMStateField []) { |
115 | 24daf35c | Juan Quintela | VMSTATE_IDE_BUS(bus, MMIOState), |
116 | 24daf35c | Juan Quintela | VMSTATE_IDE_DRIVES(bus.ifs, MMIOState), |
117 | 24daf35c | Juan Quintela | VMSTATE_END_OF_LIST() |
118 | 24daf35c | Juan Quintela | } |
119 | 24daf35c | Juan Quintela | }; |
120 | 2bcbf7e4 | Gerd Hoffmann | |
121 | c227f099 | Anthony Liguori | void mmio_ide_init (target_phys_addr_t membase, target_phys_addr_t membase2,
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122 | 3d2bf4a1 | Gerd Hoffmann | qemu_irq irq, int shift,
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123 | f455e98c | Gerd Hoffmann | DriveInfo *hd0, DriveInfo *hd1) |
124 | 3d2bf4a1 | Gerd Hoffmann | { |
125 | 3d2bf4a1 | Gerd Hoffmann | MMIOState *s = qemu_mallocz(sizeof(MMIOState));
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126 | 3d2bf4a1 | Gerd Hoffmann | int mem1, mem2;
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127 | 3d2bf4a1 | Gerd Hoffmann | |
128 | 0ce51e92 | Juan Quintela | ide_init2(&s->bus, hd0, hd1, irq); |
129 | 3d2bf4a1 | Gerd Hoffmann | |
130 | 3d2bf4a1 | Gerd Hoffmann | s->shift = shift; |
131 | 3d2bf4a1 | Gerd Hoffmann | |
132 | 3d2bf4a1 | Gerd Hoffmann | mem1 = cpu_register_io_memory(mmio_ide_reads, mmio_ide_writes, s); |
133 | 3d2bf4a1 | Gerd Hoffmann | mem2 = cpu_register_io_memory(mmio_ide_status, mmio_ide_cmd, s); |
134 | 3d2bf4a1 | Gerd Hoffmann | cpu_register_physical_memory(membase, 16 << shift, mem1);
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135 | 3d2bf4a1 | Gerd Hoffmann | cpu_register_physical_memory(membase2, 2 << shift, mem2);
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136 | 24daf35c | Juan Quintela | vmstate_register(0, &vmstate_ide_mmio, s);
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137 | 4a643563 | Blue Swirl | qemu_register_reset(mmio_ide_reset, s); |
138 | 3d2bf4a1 | Gerd Hoffmann | } |