Function bcm_sdhost_waitcommand

freebsd/arm/broadcom/bcm2835/bcm2835_sdhost.c:508–520

* rv 0 --> command finished * rv 1 --> command timed out */

 * rv 1 --> command timed out
 */
static inline int
bcm_sdhost_waitcommand(struct bcm_sdhost_softc *sc)
{
	int timeout = 1000;

	mtx_assert(&sc->mtx, MA_OWNED);

	while ((RD4(sc, HC_COMMAND) & HC_CMD_ENABLE) && --timeout > 0) {
		DELAY(100);
	}

	return ((timeout > 0) ? 0 : 1);
}

static int
bcm_sdhost_waitcommand_status(struct bcm_sdhost_softc *sc)