Archipelago » qemu

/*

 * QEMU Synchronous Serial Interface support

 *

 * Copyright (c) 2009 CodeSourcery.

 * Written by Paul Brook

 *

 * This code is licenced under the GNU GPL v2.

 */

#include "ssi.h"

struct SSIBus {

    SSISlave *slave;

};

static void ssi_slave_init(DeviceState *dev, void *opaque)

{

    SSISlaveInfo *info = opaque;

    SSISlave *s = SSI_SLAVE_FROM_QDEV(dev);

    SSIBus *bus = qdev_get_bus(dev);

    bus->slave = s;

    s->info = info;

    info->init(s);

}

void ssi_register_slave(const char *name, int size, SSISlaveInfo *info)

{

    assert(size >= sizeof(SSISlave));

    qdev_register(name, size, ssi_slave_init, info);

}

DeviceState *ssi_create_slave(SSIBus *bus, const char *name)

{

    DeviceState *dev;

    dev = qdev_create(bus, name);

    qdev_init(dev);

    return dev;

}

SSIBus *ssi_create_bus(void)

{

    return qemu_mallocz(sizeof(SSIBus));

}

uint32_t ssi_transfer(SSIBus *bus, uint32_t val)

{

    if (!bus->slave) {

        return 0;

    }

    return bus->slave->info->transfer(bus->slave, val);

}