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Add common BusState

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Implement and use a common device bus state.  The main side-effect is
that creating a bus and attaching it to a parent device are no longer
separate operations.  For legacy code we allow a NULL parent, but that
should go away eventually.

Also tweak creation code to veriry theat a device in on the right bus.

Signed-off-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Paul Brook 2009-05-23 00:05:19 +01:00
parent 4856fcff8a
commit 02e2da45c4
30 changed files with 229 additions and 135 deletions
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12
hw/stellaris.c
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@ -874,11 +874,11 @@ static int stellaris_i2c_load(QEMUFile *f, void *opaque, int version_id)
static void stellaris_i2c_init(SysBusDevice * dev)
{
stellaris_i2c_state *s = FROM_SYSBUS(stellaris_i2c_state, dev);
i2c_bus *bus = i2c_init_bus();
i2c_bus *bus;
int iomemtype;
sysbus_init_irq(dev, &s->irq);
qdev_attach_child_bus(&dev->qdev, "i2c", bus);
bus = i2c_init_bus(&dev->qdev, "i2c");
s->bus = bus;
iomemtype = cpu_register_io_memory(0, stellaris_i2c_readfn,
@ -1239,10 +1239,8 @@ static void stellaris_ssi_bus_init(SSISlave *dev)
{
stellaris_ssi_bus_state *s = FROM_SSI_SLAVE(stellaris_ssi_bus_state, dev);
s->bus[0] = ssi_create_bus();
qdev_attach_child_bus(&dev->qdev, "ssi0", s->bus[0]);
s->bus[1] = ssi_create_bus();
qdev_attach_child_bus(&dev->qdev, "ssi1", s->bus[1]);
s->bus[0] = ssi_create_bus(&dev->qdev, "ssi0");
s->bus[1] = ssi_create_bus(&dev->qdev, "ssi1");
qdev_init_gpio_in(&dev->qdev, stellaris_ssi_bus_select, 1);
register_savevm("stellaris_ssi_bus", -1, 1,
@ -1320,7 +1318,7 @@ static void stellaris_init(const char *kernel_filename, const char *cpu_model,
if (board->dc2 & (1 << 12)) {
DeviceState *dev;
dev = sysbus_create_simple("stellaris-i2c", 0x40020000, pic[8]);
i2c = qdev_get_child_bus(dev, "i2c");
i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
if (board->peripherals & BP_OLED_I2C) {
i2c_create_slave(i2c, "ssd0303", 0x3d);
}