qemu/hw/empty_slot.c
Paolo Bonzini 83c9f4ca79 hw: include hw header files with full paths
Done with this script:

cd hw
for i in `find . -name '*.h' | sed 's/^..//'`; do
  echo '\,^#.*include.*["<]'$i'[">], s,'$i',hw/&,'
done | sed -i -f - `find . -type f`

This is so that paths remain valid as files are moved.

Instead, files in hw/dataplane are referenced with the relative path.
We know they are not going to move to include/, and they are the only
include files that are in subdirectories _and_ move.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-01 15:01:17 +01:00

99 lines
2.3 KiB
C

/*
* QEMU Empty Slot
*
* The empty_slot device emulates known to a bus but not connected devices.
*
* Copyright (c) 2010 Artyom Tarasenko
*
* This code is licensed under the GNU GPL v2 or (at your option) any later
* version.
*/
#include "hw/hw.h"
#include "hw/sysbus.h"
#include "hw/empty_slot.h"
//#define DEBUG_EMPTY_SLOT
#ifdef DEBUG_EMPTY_SLOT
#define DPRINTF(fmt, ...) \
do { printf("empty_slot: " fmt , ## __VA_ARGS__); } while (0)
#else
#define DPRINTF(fmt, ...) do {} while (0)
#endif
typedef struct EmptySlot {
SysBusDevice busdev;
MemoryRegion iomem;
uint64_t size;
} EmptySlot;
static uint64_t empty_slot_read(void *opaque, hwaddr addr,
unsigned size)
{
DPRINTF("read from " TARGET_FMT_plx "\n", addr);
return 0;
}
static void empty_slot_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
DPRINTF("write 0x%x to " TARGET_FMT_plx "\n", (unsigned)val, addr);
}
static const MemoryRegionOps empty_slot_ops = {
.read = empty_slot_read,
.write = empty_slot_write,
.endianness = DEVICE_NATIVE_ENDIAN,
};
void empty_slot_init(hwaddr addr, uint64_t slot_size)
{
if (slot_size > 0) {
/* Only empty slots larger than 0 byte need handling. */
DeviceState *dev;
SysBusDevice *s;
EmptySlot *e;
dev = qdev_create(NULL, "empty_slot");
s = SYS_BUS_DEVICE(dev);
e = FROM_SYSBUS(EmptySlot, s);
e->size = slot_size;
qdev_init_nofail(dev);
sysbus_mmio_map(s, 0, addr);
}
}
static int empty_slot_init1(SysBusDevice *dev)
{
EmptySlot *s = FROM_SYSBUS(EmptySlot, dev);
memory_region_init_io(&s->iomem, &empty_slot_ops, s,
"empty-slot", s->size);
sysbus_init_mmio(dev, &s->iomem);
return 0;
}
static void empty_slot_class_init(ObjectClass *klass, void *data)
{
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
k->init = empty_slot_init1;
}
static const TypeInfo empty_slot_info = {
.name = "empty_slot",
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(EmptySlot),
.class_init = empty_slot_class_init,
};
static void empty_slot_register_types(void)
{
type_register_static(&empty_slot_info);
}
type_init(empty_slot_register_types)