2 * QEMU IDE Emulation: mmio support (for embedded).
4 * Copyright (c) 2003 Fabrice Bellard
5 * Copyright (c) 2006 Openedhand Ltd.
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:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
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
27 #include "block_int.h"
31 #include <hw/ide/internal.h>
33 /***********************************************************/
34 /* MMIO based ide port
35 * This emulates IDE device connected directly to the CPU bus without
36 * dedicated ide controller, which is often seen on embedded boards.
44 static void mmio_ide_reset(void *opaque)
46 MMIOState *s = opaque;
48 ide_bus_reset(&s->bus);
51 static uint32_t mmio_ide_read (void *opaque, target_phys_addr_t addr)
53 MMIOState *s = opaque;
56 return ide_ioport_read(&s->bus, addr);
58 return ide_data_readw(&s->bus, 0);
61 static void mmio_ide_write (void *opaque, target_phys_addr_t addr,
64 MMIOState *s = opaque;
67 ide_ioport_write(&s->bus, addr, val);
69 ide_data_writew(&s->bus, 0, val);
72 static CPUReadMemoryFunc * const mmio_ide_reads[] = {
78 static CPUWriteMemoryFunc * const mmio_ide_writes[] = {
84 static uint32_t mmio_ide_status_read (void *opaque, target_phys_addr_t addr)
87 return ide_status_read(&s->bus, 0);
90 static void mmio_ide_cmd_write (void *opaque, target_phys_addr_t addr,
93 MMIOState *s = opaque;
94 ide_cmd_write(&s->bus, 0, val);
97 static CPUReadMemoryFunc * const mmio_ide_status[] = {
100 mmio_ide_status_read,
103 static CPUWriteMemoryFunc * const mmio_ide_cmd[] = {
109 static const VMStateDescription vmstate_ide_mmio = {
112 .minimum_version_id = 0,
113 .minimum_version_id_old = 0,
114 .fields = (VMStateField []) {
115 VMSTATE_IDE_BUS(bus, MMIOState),
116 VMSTATE_IDE_DRIVES(bus.ifs, MMIOState),
117 VMSTATE_END_OF_LIST()
121 void mmio_ide_init (target_phys_addr_t membase, target_phys_addr_t membase2,
122 qemu_irq irq, int shift,
123 DriveInfo *hd0, DriveInfo *hd1)
125 MMIOState *s = qemu_mallocz(sizeof(MMIOState));
128 ide_init2_with_non_qdev_drives(&s->bus, hd0, hd1, irq);
132 mem1 = cpu_register_io_memory(mmio_ide_reads, mmio_ide_writes, s,
133 DEVICE_NATIVE_ENDIAN);
134 mem2 = cpu_register_io_memory(mmio_ide_status, mmio_ide_cmd, s,
135 DEVICE_NATIVE_ENDIAN);
136 cpu_register_physical_memory(membase, 16 << shift, mem1);
137 cpu_register_physical_memory(membase2, 2 << shift, mem2);
138 vmstate_register(NULL, 0, &vmstate_ide_mmio, s);
139 qemu_register_reset(mmio_ide_reset, s);