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Commit e21c7316 authored by Roy Pledge's avatar Roy Pledge Committed by Scott Wood
Browse files

soc/fsl/qbman: Disable IRQs for deferred QBMan work 



Work for Congestion State Notifications (CSCN) and Message Ring (MR)
handling is handled via the workqueue mechanism. This requires the
driver to disable those IRQs before scheduling the work and re-enabling
it once the work is completed so that the interrupt doesn't continually
fire.

Signed-off-by: default avatarRoy Pledge <roy.pledge@nxp.com>
Signed-off-by: default avatarScott Wood <oss@buserror.net>
parent 4ba25162

drivers/soc/fsl/qbman/qman.c

+5 −0
Original line number Diff line number Diff line
@@ -1344,6 +1344,7 @@ static void qm_congestion_task(struct work_struct *work) 
	if (!qm_mc_result_timeout(&p->p, &mcr)) {

		spin_unlock(&p->cgr_lock);

		dev_crit(p->config->dev, "QUERYCONGESTION timeout\n");

		qman_p_irqsource_add(p, QM_PIRQ_CSCI);

		return;

	}

	/* mask out the ones I'm not interested in */
@@ -1358,6 +1359,7 @@ static void qm_congestion_task(struct work_struct *work) 
		if (cgr->cb && qman_cgrs_get(&c, cgr->cgrid))

			cgr->cb(p, cgr, qman_cgrs_get(&rr, cgr->cgrid));

	spin_unlock(&p->cgr_lock);

	qman_p_irqsource_add(p, QM_PIRQ_CSCI);

}



static void qm_mr_process_task(struct work_struct *work)
@@ -1417,12 +1419,14 @@ static void qm_mr_process_task(struct work_struct *work) 
	}



	qm_mr_cci_consume(&p->p, num);

	qman_p_irqsource_add(p, QM_PIRQ_MRI);

	preempt_enable();

}



static u32 __poll_portal_slow(struct qman_portal *p, u32 is)

{

	if (is & QM_PIRQ_CSCI) {

		qman_p_irqsource_remove(p, QM_PIRQ_CSCI);

		queue_work_on(smp_processor_id(), qm_portal_wq,

			      &p->congestion_work);

	}
@@ -1434,6 +1438,7 @@ static u32 __poll_portal_slow(struct qman_portal *p, u32 is) 
	}



	if (is & QM_PIRQ_MRI) {

		qman_p_irqsource_remove(p, QM_PIRQ_MRI);

		queue_work_on(smp_processor_id(), qm_portal_wq,

			      &p->mr_work);

	}