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/*
* QEMU IDE Emulation: mmio support (for embedded).
*
* Copyright (c) 2003 Fabrice Bellard
* Copyright (c) 2006 Openedhand Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/sysbus.h"
#include "sysemu/block-backend.h"
#include "sysemu/dma.h"
#include "hw/ide/internal.h"
/***********************************************************/
/* MMIO based ide port
* This emulates IDE device connected directly to the CPU bus without
* dedicated ide controller, which is often seen on embedded boards.
*/
#define TYPE_MMIO_IDE "mmio-ide"
#define MMIO_IDE(obj) OBJECT_CHECK(MMIOState, (obj), TYPE_MMIO_IDE)
typedef struct MMIOIDEState {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
IDEBus bus;
uint32_t shift;
qemu_irq irq;
MemoryRegion iomem1, iomem2;
} MMIOState;
static void mmio_ide_reset(DeviceState *dev)
{
MMIOState *s = MMIO_IDE(dev);
ide_bus_reset(&s->bus);
}
static uint64_t mmio_ide_read(void *opaque, hwaddr addr,
unsigned size)
{
MMIOState *s = opaque;
addr >>= s->shift;
if (addr & 7)
return ide_ioport_read(&s->bus, addr);
else
return ide_data_readw(&s->bus, 0);
}
static void mmio_ide_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
MMIOState *s = opaque;
addr >>= s->shift;
if (addr & 7)
ide_ioport_write(&s->bus, addr, val);
else
ide_data_writew(&s->bus, 0, val);
}
static const MemoryRegionOps mmio_ide_ops = {
.read = mmio_ide_read,
.write = mmio_ide_write,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static uint64_t mmio_ide_status_read(void *opaque, hwaddr addr,
unsigned size)
{
MMIOState *s= opaque;
return ide_status_read(&s->bus, 0);
}
static void mmio_ide_cmd_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
MMIOState *s = opaque;
ide_cmd_write(&s->bus, 0, val);
}
static const MemoryRegionOps mmio_ide_cs_ops = {
.read = mmio_ide_status_read,
.write = mmio_ide_cmd_write,
.endianness = DEVICE_LITTLE_ENDIAN,
};
static const VMStateDescription vmstate_ide_mmio = {
.name = "mmio-ide",
.version_id = 3,
.minimum_version_id = 0,
.fields = (VMStateField[]) {
VMSTATE_IDE_BUS(bus, MMIOState),
VMSTATE_IDE_DRIVES(bus.ifs, MMIOState),
VMSTATE_END_OF_LIST()
}
};
static void mmio_ide_realizefn(DeviceState *dev, Error **errp)
{
SysBusDevice *d = SYS_BUS_DEVICE(dev);
MMIOState *s = MMIO_IDE(dev);
ide_init2(&s->bus, s->irq);
memory_region_init_io(&s->iomem1, OBJECT(s), &mmio_ide_ops, s,
"ide-mmio.1", 16 << s->shift);
memory_region_init_io(&s->iomem2, OBJECT(s), &mmio_ide_cs_ops, s,
"ide-mmio.2", 2 << s->shift);
sysbus_init_mmio(d, &s->iomem1);
sysbus_init_mmio(d, &s->iomem2);
}
static void mmio_ide_initfn(Object *obj)
{
SysBusDevice *d = SYS_BUS_DEVICE(obj);
MMIOState *s = MMIO_IDE(obj);
ide_bus_new(&s->bus, sizeof(s->bus), DEVICE(obj), 0, 2);
sysbus_init_irq(d, &s->irq);
}
static Property mmio_ide_properties[] = {
DEFINE_PROP_UINT32("shift", MMIOState, shift, 0),
DEFINE_PROP_END_OF_LIST()
};
static void mmio_ide_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = mmio_ide_realizefn;
dc->reset = mmio_ide_reset;
dc->props = mmio_ide_properties;
dc->vmsd = &vmstate_ide_mmio;
}
static const TypeInfo mmio_ide_type_info = {
.name = TYPE_MMIO_IDE,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(MMIOState),
.instance_init = mmio_ide_initfn,
.class_init = mmio_ide_class_init,
};
static void mmio_ide_register_types(void)
{
type_register_static(&mmio_ide_type_info);
}
void mmio_ide_init_drives(DeviceState *dev, DriveInfo *hd0, DriveInfo *hd1)
{
MMIOState *s = MMIO_IDE(dev);
if (hd0 != NULL) {
ide_create_drive(&s->bus, 0, hd0);
}
if (hd1 != NULL) {
ide_create_drive(&s->bus, 1, hd1);
}
}
type_init(mmio_ide_register_types)
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