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Date: Thu, 23 Nov 2023 17:08:15 +0530
From: Suraj Jaiswal <quic_jsuraj@...cinc.com>
To: <quic_jsuraj@...cinc.com>, Vinod Koul <vkoul@...nel.org>,
Bhupesh Sharma <bhupesh.sharma@...aro.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
"Jakub Kicinski" <kuba@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
"Jose Abreu" <joabreu@...opsys.com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
<netdev@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-stm32@...md-mailman.stormreply.com>,
Prasad Sodagudi <psodagud@...cinc.com>,
Andrew Halaney <ahalaney@...hat.com>
CC: <kernel@...cinc.com>
Subject: [PATCH net-next v3 3/3] net: stmmac: Add driver support for DWMAC5 fault IRQ Support
Add IRQ support to listen HW fault like ECC,DPP,FSM
fault and print the fault information in the kernel
log.
Signed-off-by: Suraj Jaiswal <quic_jsuraj@...cinc.com>
---
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 | 20 +++++++++++++++++++
4 files changed, 41 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 6b935922054d..c4821c7ab674 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 cd7a9768de5f..8893d4b7fa38 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_intr;
int rx_irq[MTL_MAX_RX_QUEUES];
int tx_irq[MTL_MAX_TX_QUEUES];
};
@@ -331,6 +332,7 @@ struct stmmac_priv {
/* XDP BPF Program */
unsigned long *af_xdp_zc_qps;
struct bpf_prog *xdp_prog;
+ int safety_common_intr;
};
enum stmmac_state {
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 8964fc8a955f..2ae4f34444de 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3530,6 +3530,10 @@ 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_intr > 0 && priv->safety_common_intr != dev->irq)
+ free_irq(priv->safety_common_intr, dev);
+ fallthrough;
case REQ_IRQ_ERR_WOL:
free_irq(dev->irq, dev);
fallthrough;
@@ -3736,6 +3740,18 @@ static int stmmac_request_irq_single(struct net_device *dev)
}
}
+ if (priv->safety_common_intr > 0 && priv->safety_common_intr != dev->irq) {
+ ret = request_irq(priv->safety_common_intr, 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_intr, ret);
+ irq_err = REQ_IRQ_ERR_SAFETY;
+ goto irq_error;
+ }
+ }
+
return 0;
irq_error:
@@ -7398,6 +7414,8 @@ 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_intr = res->safety_common_intr;
+
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..bae1704d5f4b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -690,9 +690,25 @@ devm_stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
#endif /* CONFIG_OF */
EXPORT_SYMBOL_GPL(devm_stmmac_probe_config_dt);
+int stmmac_get_fault_intr_config(struct platform_device *pdev, struct stmmac_resources *res)
+{
+ int ret = 0;
+
+ res->safety_common_intr = platform_get_irq_byname(pdev, "safety");
+
+ if (res->safety_common_intr < 0) {
+ if (res->safety_common_intr != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "safety IRQ configuration information not found\n");
+ ret = 1;
+ }
+
+ return ret;
+}
+
int stmmac_get_platform_resources(struct platform_device *pdev,
struct stmmac_resources *stmmac_res)
{
+ int ret = 0;
memset(stmmac_res, 0, sizeof(*stmmac_res));
/* Get IRQ information early to have an ability to ask for deferred
@@ -702,6 +718,10 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
if (stmmac_res->irq < 0)
return stmmac_res->irq;
+ ret = stmmac_get_fault_intr_config(pdev, stmmac_res);
+ if (ret)
+ dev_err(&pdev->dev, "Fault interrupt not present\n");
+
/* On some platforms e.g. SPEAr the wake up irq differs from the mac irq
* The external wake up irq can be passed through the platform code
* named as "eth_wake_irq"
--
2.25.1
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