C++ (Cpp) idahwqcbvtop示例

示例#1

文件： ida.c 项目： AhmadTux/DragonFlyBSD

/*
 * XXX
 * since we allocate all QCB space up front during initialization, then
 * why bother with this routine?
 */
static void
ida_alloc_qcb(struct ida_softc *ida)
{
	struct ida_qcb *qcb;
	int error;

	if (ida->num_qcbs >= IDA_QCB_MAX)
		return;

	qcb = &ida->qcbs[ida->num_qcbs];

	error = bus_dmamap_create(ida->buffer_dmat, /*flags*/0, &qcb->dmamap);
	if (error != 0)
		return;

	qcb->flags = QCB_FREE;
	qcb->hwqcb = &ida->hwqcbs[ida->num_qcbs];
	qcb->hwqcb->qcb = qcb;
	qcb->hwqcb_busaddr = idahwqcbvtop(ida, qcb->hwqcb);
	SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle);
	ida->num_qcbs++;
}

示例#2

static int
ida_alloc_qcbs(struct ida_softc *ida)
{
	struct ida_qcb *qcb;
	int error, i;

	for (i = 0; i < IDA_QCB_MAX; i++) {
		qcb = &ida->qcbs[i];

		error = bus_dmamap_create(ida->buffer_dmat, /*flags*/0, &qcb->dmamap);
		if (error != 0)
			return (error);

		qcb->ida = ida;
		qcb->flags = QCB_FREE;
		qcb->hwqcb = &ida->hwqcbs[i];
		qcb->hwqcb->qcb = qcb;
		qcb->hwqcb_busaddr = idahwqcbvtop(ida, qcb->hwqcb);
		SLIST_INSERT_HEAD(&ida->free_qcbs, qcb, link.sle);
	}
	return (0);
}