From: Roy Pledge <roy.pledge@nxp.com>
Date: Thu, 1 Aug 2019 20:17:01 +0000
Subject: soc/fsl/qbman: Disable interrupts during portal recovery

Git-commit: ea2b8488baa705be44e7c7ac8a42d33fd31315b7
Patch-mainline: v5.4-rc1
References: bsc#1159535

Disable the QBMan interrupts during recovery.

Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
 drivers/soc/fsl/qbman/qman.c      | 22 +++++++++++++++++++---
 drivers/soc/fsl/qbman/qman_ccsr.c |  1 +
 drivers/soc/fsl/qbman/qman_priv.h |  1 +
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/drivers/soc/fsl/qbman/qman.c b/drivers/soc/fsl/qbman/qman.c
index 29895044f04d..4a99ce5ce929 100644
--- a/drivers/soc/fsl/qbman/qman.c
+++ b/drivers/soc/fsl/qbman/qman.c
@@ -1070,6 +1070,20 @@ int qman_wq_alloc(void)
 	return 0;
 }
 
+
+void qman_enable_irqs(void)
+{
+	int i;
+
+	for (i = 0; i < num_possible_cpus(); i++) {
+		if (affine_portals[i]) {
+			qm_out(&affine_portals[i]->p, QM_REG_ISR, 0xffffffff);
+			qm_out(&affine_portals[i]->p, QM_REG_IIR, 0);
+		}
+
+	}
+}
+
 /*
  * This is what everything can wait on, even if it migrates to a different cpu
  * to the one whose affine portal it is waiting on.
@@ -1269,8 +1283,8 @@ static int qman_create_portal(struct qman_portal *portal,
 	qm_out(p, QM_REG_ISDR, isdr);
 	portal->irq_sources = 0;
 	qm_out(p, QM_REG_IER, 0);
-	qm_out(p, QM_REG_ISR, 0xffffffff);
 	snprintf(portal->irqname, MAX_IRQNAME, IRQNAME, c->cpu);
+	qm_out(p, QM_REG_IIR, 1);
 	if (request_irq(c->irq, portal_isr, 0, portal->irqname,	portal)) {
 		dev_err(c->dev, "request_irq() failed\n");
 		goto fail_irq;
@@ -1290,7 +1304,7 @@ static int qman_create_portal(struct qman_portal *portal,
 	isdr &= ~(QM_PIRQ_DQRI | QM_PIRQ_MRI);
 	qm_out(p, QM_REG_ISDR, isdr);
 	if (qm_dqrr_current(p)) {
-		dev_err(c->dev, "DQRR unclean\n");
+		dev_dbg(c->dev, "DQRR unclean\n");
 		qm_dqrr_cdc_consume_n(p, 0xffff);
 	}
 	if (qm_mr_current(p) && drain_mr_fqrni(p)) {
@@ -1303,8 +1317,10 @@ static int qman_create_portal(struct qman_portal *portal,
 	}
 	/* Success */
 	portal->config = c;
+	qm_out(p, QM_REG_ISR, 0xffffffff);
 	qm_out(p, QM_REG_ISDR, 0);
-	qm_out(p, QM_REG_IIR, 0);
+	if (!qman_requires_cleanup())
+		qm_out(p, QM_REG_IIR, 0);
 	/* Write a sane SDQCR */
 	qm_dqrr_sdqcr_set(p, portal->sdqcr);
 	return 0;
diff --git a/drivers/soc/fsl/qbman/qman_ccsr.c b/drivers/soc/fsl/qbman/qman_ccsr.c
index 709661b7b7a8..157659fd033a 100644
--- a/drivers/soc/fsl/qbman/qman_ccsr.c
+++ b/drivers/soc/fsl/qbman/qman_ccsr.c
@@ -744,6 +744,7 @@ int qman_requires_cleanup(void)
 
 void qman_done_cleanup(void)
 {
+	qman_enable_irqs();
 	__qman_requires_cleanup = 0;
 }
 
diff --git a/drivers/soc/fsl/qbman/qman_priv.h b/drivers/soc/fsl/qbman/qman_priv.h
index a8a35fe9afc5..fd1cf543fb81 100644
--- a/drivers/soc/fsl/qbman/qman_priv.h
+++ b/drivers/soc/fsl/qbman/qman_priv.h
@@ -279,3 +279,4 @@ int qman_shutdown_fq(u32 fqid);
 
 int qman_requires_cleanup(void);
 void qman_done_cleanup(void);
+void qman_enable_irqs(void);
-- 
2.16.4