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
29 #include <hw/ide/internal.h>
31 /***********************************************************/
32 /* MMIO based ide port
33 * This emulates IDE device connected directly to the CPU bus without
34 * dedicated ide controller, which is often seen on embedded boards.
42 static void mmio_ide_reset(void *opaque)
44 MMIOState *s = opaque;
46 ide_bus_reset(&s->bus);
49 static uint32_t mmio_ide_read (void *opaque, target_phys_addr_t addr)
51 MMIOState *s = opaque;
54 return ide_ioport_read(&s->bus, addr);
56 return ide_data_readw(&s->bus, 0);
59 static void mmio_ide_write (void *opaque, target_phys_addr_t addr,
62 MMIOState *s = opaque;
65 ide_ioport_write(&s->bus, addr, val);
67 ide_data_writew(&s->bus, 0, val);
70 static CPUReadMemoryFunc * const mmio_ide_reads[] = {
76 static CPUWriteMemoryFunc * const mmio_ide_writes[] = {
82 static uint32_t mmio_ide_status_read (void *opaque, target_phys_addr_t addr)
85 return ide_status_read(&s->bus, 0);
88 static void mmio_ide_cmd_write (void *opaque, target_phys_addr_t addr,
91 MMIOState *s = opaque;
92 ide_cmd_write(&s->bus, 0, val);
95 static CPUReadMemoryFunc * const mmio_ide_status[] = {
101 static CPUWriteMemoryFunc * const mmio_ide_cmd[] = {
107 static const VMStateDescription vmstate_ide_mmio = {
110 .minimum_version_id = 0,
111 .minimum_version_id_old = 0,
112 .fields = (VMStateField []) {
113 VMSTATE_IDE_BUS(bus, MMIOState),
114 VMSTATE_IDE_DRIVES(bus.ifs, MMIOState),
115 VMSTATE_END_OF_LIST()
119 void mmio_ide_init (target_phys_addr_t membase, target_phys_addr_t membase2,
120 qemu_irq irq, int shift,
121 DriveInfo *hd0, DriveInfo *hd1)
123 MMIOState *s = g_malloc0(sizeof(MMIOState));
126 ide_init2_with_non_qdev_drives(&s->bus, hd0, hd1, irq);
130 mem1 = cpu_register_io_memory(mmio_ide_reads, mmio_ide_writes, s,
131 DEVICE_NATIVE_ENDIAN);
132 mem2 = cpu_register_io_memory(mmio_ide_status, mmio_ide_cmd, s,
133 DEVICE_NATIVE_ENDIAN);
134 cpu_register_physical_memory(membase, 16 << shift, mem1);
135 cpu_register_physical_memory(membase2, 2 << shift, mem2);
136 vmstate_register(NULL, 0, &vmstate_ide_mmio, s);
137 qemu_register_reset(mmio_ide_reset, s);