static int tegra186_bpmp_probe(struct udevice *dev)
{
struct tegra186_bpmp *priv = dev_get_priv(dev);
int ret;
ulong tx_base, rx_base, start_time;
debug("%s(dev=%p) (priv=%p)\n", __func__, dev, priv);
ret = mbox_get_by_index(dev, 0, &priv->mbox);
if (ret) {
error("mbox_get_by_index() failed: %d\n", ret);
return ret;
}
tx_base = tegra186_bpmp_get_shmem(dev, 0);
if (IS_ERR_VALUE(tx_base)) {
error("tegra186_bpmp_get_shmem failed for tx_base\n");
return tx_base;
}
rx_base = tegra186_bpmp_get_shmem(dev, 1);
if (IS_ERR_VALUE(rx_base)) {
error("tegra186_bpmp_get_shmem failed for rx_base\n");
return rx_base;
}
debug("shmem: rx=%lx, tx=%lx\n", rx_base, tx_base);
ret = tegra_ivc_init(&priv->ivc, rx_base, tx_base, BPMP_IVC_FRAME_COUNT,
BPMP_IVC_FRAME_SIZE, tegra186_bpmp_ivc_notify);
if (ret) {
error("tegra_ivc_init() failed: %d\n", ret);
return ret;
}
tegra_ivc_channel_reset(&priv->ivc);
start_time = timer_get_us();
for (;;) {
ret = tegra_ivc_channel_notified(&priv->ivc);
if (!ret)
break;
/* Timeout 100ms */
if ((timer_get_us() - start_time) > 100 * 1000) {
error("Initial IVC reset timed out (%d)\n", ret);
ret = -ETIMEDOUT;
goto err_free_mbox;
}
}
return 0;
err_free_mbox:
mbox_free(&priv->mbox);
return ret;
}
int mbox_get_by_name(struct udevice *dev, const char *name,
struct mbox_chan *chan)
{
int index;
debug("%s(dev=%p, name=%s, chan=%p)\n", __func__, dev, name, chan);
index = fdt_find_string(gd->fdt_blob, dev->of_offset, "mbox-names",
name);
if (index < 0) {
debug("fdt_find_string() failed: %d\n", index);
return index;
}
return mbox_get_by_index(dev, index, chan);
}