Add IRQ support to listen HW safety IRQ like ECC(error
correction code), DPP(data path parity), FSM(finite state
machine) fault and print the fault information in the kernel
log.
Signed-off-by: Suraj Jaiswal <quic_jsuraj@xxxxxxxxxxx>
---
drivers/net/ethernet/stmicro/stmmac/common.h | 1 +
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 ++
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 18 ++++++++++++++++++
.../ethernet/stmicro/stmmac/stmmac_platform.c | 9 +++++++++
4 files changed, 30 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 721c1f8e892f..cb9645fe16d8 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -347,6 +347,7 @@ enum request_irq_err {
REQ_IRQ_ERR_SFTY_UE,
REQ_IRQ_ERR_SFTY_CE,
REQ_IRQ_ERR_LPI,
+ REQ_IRQ_ERR_SAFETY,
REQ_IRQ_ERR_WOL,
REQ_IRQ_ERR_MAC,
REQ_IRQ_ERR_NO,
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 9f89acf31050..aa2eda6fb927 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -33,6 +33,7 @@ struct stmmac_resources {
int irq;
int sfty_ce_irq;
int sfty_ue_irq;
+ int safety_common_irq;
int rx_irq[MTL_MAX_RX_QUEUES];
int tx_irq[MTL_MAX_TX_QUEUES];
};
@@ -299,6 +300,7 @@ struct stmmac_priv {
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
int sfty_ce_irq;
int sfty_ue_irq;
+ int safety_common_irq;
int rx_irq[MTL_MAX_RX_QUEUES];
int tx_irq[MTL_MAX_TX_QUEUES];
/*irq name */
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 47de466e432c..e4a0d9ec8b3f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3592,6 +3592,10 @@ static void stmmac_free_irq(struct net_device *dev,
if (priv->wol_irq > 0 && priv->wol_irq != dev->irq)
free_irq(priv->wol_irq, dev);
fallthrough;
+ case REQ_IRQ_ERR_SAFETY:
+ if (priv->safety_common_irq > 0 && priv->safety_common_irq != dev->irq)
+ free_irq(priv->safety_common_irq, dev);
+ fallthrough;
case REQ_IRQ_ERR_WOL:
free_irq(dev->irq, dev);
fallthrough;
@@ -3798,6 +3802,18 @@ static int stmmac_request_irq_single(struct net_device *dev)
}
}
+ if (priv->safety_common_irq > 0 && priv->safety_common_irq != dev->irq) {
+ ret = request_irq(priv->safety_common_irq, stmmac_safety_interrupt,
+ 0, "safety", dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc safety failed %d (error: %d)\n",
+ __func__, priv->safety_common_irq, ret);
+ irq_err = REQ_IRQ_ERR_SAFETY;
+ goto irq_error;
+ }
+ }
+
return 0;
irq_error:
@@ -7464,6 +7480,8 @@ int stmmac_dvr_probe(struct device *device,
priv->lpi_irq = res->lpi_irq;
priv->sfty_ce_irq = res->sfty_ce_irq;
priv->sfty_ue_irq = res->sfty_ue_irq;
+ priv->safety_common_irq = res->safety_common_irq;
+
for (i = 0; i < MTL_MAX_RX_QUEUES; i++)
priv->rx_irq[i] = res->rx_irq[i];
for (i = 0; i < MTL_MAX_TX_QUEUES; i++)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 1ffde555da47..41a4a253d75b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -726,6 +726,15 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
}
+ stmmac_res->safety_common_irq =
+ platform_get_irq_byname_optional(pdev, "safety");
+
+ if (stmmac_res->safety_common_irq < 0) {
+ if (stmmac_res->safety_common_irq == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ dev_info(&pdev->dev, "IRQ safety IRQ not found\n");
+ }
+
stmmac_res->addr = devm_platform_ioremap_resource(pdev, 0);
return PTR_ERR_OR_ZERO(stmmac_res->addr);
--
2.25.1
