[PATCH net-next v13 0/2] Ethernet common fault IRQ support

[PATCH net-next v13 0/2] Ethernet common fault IRQ support

[Suraj Jaiswal]

Changes since v13:
- Update correct sender email

Changes since v12:
- Update correct sender email

Changes since v11:
- Update debug message print

Changes since v10:
- Update commit message

Changes since v9:
- prevent race condition of safety IRQ handling

Changes since v8:
- Use shared IRQ for sfty
- update error message

Changes since v7:
- Add support of common sfty irq on stmmac_request_irq_multi_msi.
- Remove uncecessary blank line.

Changes since v6:
- use name sfty_irq instead of safety_common_irq.

Changes since v5:
- Add description of ECC, DPP, FSM

Changes since v4:
- Fix DT_CHECKER warning
- use name safety for the IRQ.

Suraj Jaiswal (2):
  dt-bindings: net: qcom,ethqos: add binding doc for safety IRQ for
    sa8775p
  net: stmmac: Add driver support for common safety IRQ

 .../devicetree/bindings/net/qcom,ethqos.yaml  |  9 ++--
 .../devicetree/bindings/net/snps,dwmac.yaml   |  6 ++-
 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 ++++
 6 files changed, 61 insertions(+), 7 deletions(-)

-- 
2.25.1

[PATCH net-next v13 1/2] dt-bindings: net: qcom,ethqos: add binding doc for safety IRQ for sa8775p

[Suraj Jaiswal]

Add binding doc for safety IRQ. The safety IRQ will be
triggered for ECC(error correction code), DPP(data path
parity), FSM(finite state machine) error.

Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/net/qcom,ethqos.yaml | 9 ++++++---
 Documentation/devicetree/bindings/net/snps,dwmac.yaml  | 6 ++++--
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos.yaml b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
index 7bdb412a0185..69a337c7e345 100644
--- a/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
+++ b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
@@ -37,12 +37,14 @@ properties:
     items:
       - description: Combined signal for various interrupt events
       - description: The interrupt that occurs when Rx exits the LPI state
+      - description: The interrupt that occurs when HW safety error triggered
 
   interrupt-names:
     minItems: 1
     items:
       - const: macirq
-      - const: eth_lpi
+      - enum: [eth_lpi, sfty]
+      - const: sfty
 
   clocks:
     maxItems: 4
@@ -89,8 +91,9 @@ examples:
                <&gcc GCC_ETH_PTP_CLK>,
                <&gcc GCC_ETH_RGMII_CLK>;
       interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
-                   <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
-      interrupt-names = "macirq", "eth_lpi";
+                   <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>,
+                   <GIC_SPI 782 IRQ_TYPE_LEVEL_HIGH>;
+      interrupt-names = "macirq", "eth_lpi", "sfty";
 
       rx-fifo-depth = <4096>;
       tx-fifo-depth = <4096>;
diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
index 90c4db178c67..6b0341a8e0ea 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -108,13 +108,15 @@ properties:
       - description: Combined signal for various interrupt events
       - description: The interrupt to manage the remote wake-up packet detection
       - description: The interrupt that occurs when Rx exits the LPI state
+      - description: The interrupt that occurs when HW safety error triggered
 
   interrupt-names:
     minItems: 1
     items:
       - const: macirq
-      - enum: [eth_wake_irq, eth_lpi]
-      - const: eth_lpi
+      - enum: [eth_wake_irq, eth_lpi, sfty]
+      - enum: [eth_wake_irq, eth_lpi, sfty]
+      - enum: [eth_wake_irq, eth_lpi, sfty]
 
   clocks:
     minItems: 1
-- 
2.25.1

[PATCH net-next v13 2/2] net: stmmac: Add driver support for common safety IRQ

[Suraj Jaiswal]

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(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 07fe852001a0..a6fefe675ef1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -371,6 +371,7 @@ 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,
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index f155e4841c62..dddcaa9220cc 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -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];
@@ -298,6 +299,7 @@ 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];
@@ -306,6 +308,7 @@ 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];
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 5236956cc7e4..9159d93ceb03 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -3597,6 +3597,10 @@ 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;
@@ -3667,6 +3671,23 @@ 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
 	 */
@@ -3804,6 +3825,21 @@ 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:
@@ -6063,8 +6099,8 @@ 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 */
@@ -7513,6 +7549,7 @@ 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++)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 70eadc83ca68..54797edc9b38 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -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);
-- 
2.25.1

Re: [PATCH net-next v13 0/2] Ethernet common fault IRQ support

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (main)
by David S. Miller <davem@davemloft.net>:

On Fri, 9 Feb 2024 14:20:10 +0530 you wrote:
> Changes since v13:
> - Update correct sender email
> 
> Changes since v12:
> - Update correct sender email
> 
> Changes since v11:
> - Update debug message print
> 
> [...]

Here is the summary with links:
  - [net-next,v13,1/2] dt-bindings: net: qcom,ethqos: add binding doc for safety IRQ for sa8775p
    https://git.kernel.org/netdev/net-next/c/1963e65b3dfe
  - [net-next,v13,2/2] net: stmmac: Add driver support for common safety IRQ
    https://git.kernel.org/netdev/net-next/c/5c2215167d12

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html