int qman_test_api()

in fsl/qbman/qman_test_api.c [122:208]

• 79 lines of code
• 13 McCabe index (conditional complexity)

int qman_test_api(void)
{
	unsigned int flags, frmcnt;
	int err;
	struct qman_fq *fq = &fq_base;

	pr_info("%s(): Starting\n", __func__);
	fd_init(&fd);
	fd_init(&fd_dq);

	/* Initialise (parked) FQ */
	err = qman_create_fq(0, FQ_FLAGS, fq);
	if (err) {
		pr_crit("qman_create_fq() failed\n");
		goto failed;
	}
	err = qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL);
	if (err) {
		pr_crit("qman_init_fq() failed\n");
		goto failed;
	}
	/* Do enqueues + VDQCR, twice. (Parked FQ) */
	err = do_enqueues(fq);
	if (err)
		goto failed;
	pr_info("VDQCR (till-empty);\n");
	frmcnt = QM_VDQCR_NUMFRAMES_TILLEMPTY;
	err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
	if (err) {
		pr_crit("qman_volatile_dequeue() failed\n");
		goto failed;
	}
	err = do_enqueues(fq);
	if (err)
		goto failed;
	pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES);
	frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL);
	err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
	if (err) {
		pr_crit("qman_volatile_dequeue() failed\n");
		goto failed;
	}
	pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL,
		NUM_ENQUEUES);
	frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL);
	err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
	if (err) {
		pr_err("qman_volatile_dequeue() failed\n");
		goto failed;
	}

	err = do_enqueues(fq);
	if (err)
		goto failed;
	pr_info("scheduled dequeue (till-empty)\n");
	err = qman_schedule_fq(fq);
	if (err) {
		pr_crit("qman_schedule_fq() failed\n");
		goto failed;
	}
	wait_event(waitqueue, sdqcr_complete);

	/* Retire and OOS the FQ */
	err = qman_retire_fq(fq, &flags);
	if (err < 0) {
		pr_crit("qman_retire_fq() failed\n");
		goto failed;
	}
	wait_event(waitqueue, retire_complete);
	if (flags & QMAN_FQ_STATE_BLOCKOOS) {
		err = -EIO;
		pr_crit("leaking frames\n");
		goto failed;
	}
	err = qman_oos_fq(fq);
	if (err) {
		pr_crit("qman_oos_fq() failed\n");
		goto failed;
	}
	qman_destroy_fq(fq);
	pr_info("%s(): Finished\n", __func__);
	return 0;

failed:
	WARN_ON(1);
	return err;
}