Add support to listen HW safety IRQ like ECC(error
correction code), DPP(data path parity), FSM(finite state
machine) fault in common IRQ line.
Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
---
drivers/net/ethernet/stmicro/stmmac/common.h | 1 +
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 ++
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 41 ++++++++++++++++++-
.../ethernet/stmicro/stmmac/stmmac_platform.c | 8 ++++
4 files changed, 51 insertions(+), 2 deletions(-)
@@ -344,6 +344,7 @@ enum request_irq_err {
REQ_IRQ_ERR_ALL,
REQ_IRQ_ERR_TX,
REQ_IRQ_ERR_RX,
+ REQ_IRQ_ERR_SFTY,
REQ_IRQ_ERR_SFTY_UE,
REQ_IRQ_ERR_SFTY_CE,
REQ_IRQ_ERR_LPI,
@@ -31,6 +31,7 @@ struct stmmac_resources {
int wol_irq;
int lpi_irq;
int irq;
+ int sfty_irq;
int sfty_ce_irq;
int sfty_ue_irq;
int rx_irq[MTL_MAX_RX_QUEUES];
@@ -297,6 +298,7 @@ struct stmmac_priv {
void __iomem *ptpaddr;
void __iomem *estaddr;
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+ int sfty_irq;
int sfty_ce_irq;
int sfty_ue_irq;
int rx_irq[MTL_MAX_RX_QUEUES];
@@ -305,6 +307,7 @@ struct stmmac_priv {
char int_name_mac[IFNAMSIZ + 9];
char int_name_wol[IFNAMSIZ + 9];
char int_name_lpi[IFNAMSIZ + 9];
+ char int_name_sfty[IFNAMSIZ + 10];
char int_name_sfty_ce[IFNAMSIZ + 10];
char int_name_sfty_ue[IFNAMSIZ + 10];
char int_name_rx_irq[MTL_MAX_TX_QUEUES][IFNAMSIZ + 14];
@@ -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_SFTY:
+ if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq)
+ free_irq(priv->sfty_irq, dev);
+ fallthrough;
case REQ_IRQ_ERR_WOL:
free_irq(dev->irq, dev);
fallthrough;
@@ -3661,6 +3665,23 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
}
}
+ /* Request the common Safety Feature Correctible/Uncorrectible
+ * Error line in case of another line is used
+ */
+ if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) {
+ int_name = priv->int_name_sfty;
+ sprintf(int_name, "%s:%s", dev->name, "safety");
+ ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
+ 0, int_name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc sfty MSI %d (error: %d)\n",
+ __func__, priv->sfty_irq, ret);
+ irq_err = REQ_IRQ_ERR_SFTY;
+ goto irq_error;
+ }
+ }
+
/* Request the Safety Feature Correctible Error line in
* case of another line is used
*/
@@ -3798,6 +3819,21 @@ static int stmmac_request_irq_single(struct net_device *dev)
}
}
+ /* Request the common Safety Feature Correctible/Uncorrectible
+ * Error line in case of another line is used
+ */
+ if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) {
+ ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: ERROR: allocating the sfty IRQ %d (%d)\n",
+ __func__, priv->sfty_irq, ret);
+ irq_err = REQ_IRQ_ERR_SFTY;
+ goto irq_error;
+ }
+ }
+
return 0;
irq_error:
@@ -6022,8 +6058,8 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
if (test_bit(STMMAC_DOWN, &priv->state))
return IRQ_HANDLED;
- /* Check if a fatal error happened */
- if (stmmac_safety_feat_interrupt(priv))
+ /* Check ASP error if it isn't delivered via an individual IRQ */
+ if (priv->sfty_irq <= 0 && stmmac_safety_feat_interrupt(priv))
return IRQ_HANDLED;
/* To handle Common interrupts */
@@ -7462,6 +7498,7 @@ int stmmac_dvr_probe(struct device *device,
priv->dev->irq = res->irq;
priv->wol_irq = res->wol_irq;
priv->lpi_irq = res->lpi_irq;
+ priv->sfty_irq = res->sfty_irq;
priv->sfty_ce_irq = res->sfty_ce_irq;
priv->sfty_ue_irq = res->sfty_ue_irq;
for (i = 0; i < MTL_MAX_RX_QUEUES; i++)
@@ -743,6 +743,14 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
}
+ stmmac_res->sfty_irq =
+ platform_get_irq_byname_optional(pdev, "sfty");
+ if (stmmac_res->sfty_irq < 0) {
+ if (stmmac_res->sfty_irq == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ dev_info(&pdev->dev, "IRQ sfty not found\n");
+ }
+
stmmac_res->addr = devm_platform_ioremap_resource(pdev, 0);
return PTR_ERR_OR_ZERO(stmmac_res->addr);