[PATCH net-next v5 0/3] Ethernet DWMAC5 fault IRQ support

[PATCH net-next v5 0/3] Ethernet DWMAC5 fault IRQ support

[Suraj Jaiswal]

Add support to listen Ethernet HW safery IRQ. The safety IRQ will be
triggered for ECC(error correction code), DPP(data path parity,
FSM(finite state machine) error.

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

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

Suraj Jaiswal (3):
  dt-bindings: net: qcom,ethqos: add binding doc for safety IRQ for
    sa8775p
  arm64: dts: qcom: sa8775p: enable safety IRQ
  net: stmmac: Add driver support for DWMAC5 safety IRQ support

 .../devicetree/bindings/net/qcom,ethqos.yaml   |  9 ++++++---
 .../devicetree/bindings/net/snps,dwmac.yaml    |  6 ++++--
 arch/arm64/boot/dts/qcom/sa8775p.dtsi          | 10 ++++++----
 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 +++++++++
 7 files changed, 46 insertions(+), 9 deletions(-)

-- 
2.25.1

[PATCH net-next v5 1/3] 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>
---
 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..93d21389e518 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, safety]
+      - const: safety
 
   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", "safety";
 
       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 5c2769dc689a..3b46d69ea97d 100644
--- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
+++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
@@ -107,13 +107,15 @@ 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, safety]
+      - enum: [eth_wake_irq, eth_lpi, safety]
+      - enum: [eth_wake_irq, eth_lpi, safety]
 
   clocks:
     minItems: 1
-- 
2.25.1

Re: [PATCH net-next v5 1/3] dt-bindings: net: qcom,ethqos: add binding doc for safety IRQ for sa8775p

[Andrew Halaney]

On Mon, Dec 11, 2023 at 01:31:51PM +0530, Suraj Jaiswal wrote:
> 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>

Rob gave you his Reviewed-by over here on the last revision:

    https://lore.kernel.org/netdev/170206782161.2661547.16311911491075108498.robh@kernel.org/

in the future if someone gives you a tag you should add it to the patch
for the next revision you send out (assuming you have to send out
another version, otherwise the maintainers will collect the tags when
they merge that version of the series). If the patches change a lot then
it makes sense to remove the tag since it wasn't what they reviewed, but
in this case you've only expanded a comment in the commit message so it is
appropriate to be present.

> ---
>  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..93d21389e518 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, safety]
> +      - const: safety
>  
>    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", "safety";
>  
>        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 5c2769dc689a..3b46d69ea97d 100644
> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> @@ -107,13 +107,15 @@ 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, safety]
> +      - enum: [eth_wake_irq, eth_lpi, safety]
> +      - enum: [eth_wake_irq, eth_lpi, safety]
>  
>    clocks:
>      minItems: 1
> -- 
> 2.25.1
> 

Re: [PATCH net-next v5 1/3] dt-bindings: net: qcom,ethqos: add binding doc for safety IRQ for sa8775p

[Suraj Jaiswal]

sure @andrew

Thanks
Suraj

On 12/11/2023 7:22 PM, Andrew Halaney wrote:
> On Mon, Dec 11, 2023 at 01:31:51PM +0530, Suraj Jaiswal wrote:
>> 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>
> 
> Rob gave you his Reviewed-by over here on the last revision:
> 
>     https://lore.kernel.org/netdev/170206782161.2661547.16311911491075108498.robh@kernel.org/
> 
> in the future if someone gives you a tag you should add it to the patch
> for the next revision you send out (assuming you have to send out
> another version, otherwise the maintainers will collect the tags when
> they merge that version of the series). If the patches change a lot then
> it makes sense to remove the tag since it wasn't what they reviewed, but
> in this case you've only expanded a comment in the commit message so it is
> appropriate to be present.
> 
>> ---
>>  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..93d21389e518 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, safety]
>> +      - const: safety
>>  
>>    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", "safety";
>>  
>>        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 5c2769dc689a..3b46d69ea97d 100644
>> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
>> @@ -107,13 +107,15 @@ 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, safety]
>> +      - enum: [eth_wake_irq, eth_lpi, safety]
>> +      - enum: [eth_wake_irq, eth_lpi, safety]
>>  
>>    clocks:
>>      minItems: 1
>> -- 
>> 2.25.1
>>
> 

[PATCH net-next v5 2/3] arm64: dts: qcom: sa8775p: enable safety IRQ

[Suraj Jaiswal]

Add changes to support safety IRQ handling
support for ethernet.

Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.com>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 6b92f9083104..a3ed75a1314c 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -2394,8 +2394,9 @@ ethernet1: ethernet@23000000 {
 			      <0x0 0x23016000 0x0 0x100>;
 			reg-names = "stmmaceth", "rgmii";
 
-			interrupts = <GIC_SPI 929 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-names = "macirq";
+			interrupts = <GIC_SPI 929 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 781 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq", "safety";
 
 			clocks = <&gcc GCC_EMAC1_AXI_CLK>,
 				 <&gcc GCC_EMAC1_SLV_AHB_CLK>,
@@ -2427,8 +2428,9 @@ ethernet0: ethernet@23040000 {
 			      <0x0 0x23056000 0x0 0x100>;
 			reg-names = "stmmaceth", "rgmii";
 
-			interrupts = <GIC_SPI 946 IRQ_TYPE_LEVEL_HIGH>;
-			interrupt-names = "macirq";
+			interrupts = <GIC_SPI 946 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 782 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "macirq", "safety";
 
 			clocks = <&gcc GCC_EMAC0_AXI_CLK>,
 				 <&gcc GCC_EMAC0_SLV_AHB_CLK>,
-- 
2.25.1

Re: [PATCH net-next v5 2/3] arm64: dts: qcom: sa8775p: enable safety IRQ

[Konrad Dybcio]

On 11.12.2023 09:01, Suraj Jaiswal wrote:
> Add changes to support safety IRQ handling
> support for ethernet.
> 
> Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.com>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad

[PATCH net-next v5 3/3] net: stmmac: Add driver support for DWMAC5 safety IRQ support

[Suraj Jaiswal]

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@quicinc.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  |  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

Re: [PATCH net-next v5 3/3] net: stmmac: Add driver support for DWMAC5 safety IRQ support

[Serge Semin]

Hi Suraj

> [PATCH net-next v5 3/3] net: stmmac: Add driver support for DWMAC5 safety IRQ support
On Mon, Dec 11, 2023 at 01:31:53PM +0530, Suraj Jaiswal wrote:
> 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.

I guess the subject and the patch log are a bit misleading. Safety
IRQs have been supported by the kernel since commit 8bf993a5877e
("net: stmmac: Add support for DWMAC5 and implement Safety Features").
Meanwhile based on the patch body what you are doing here is adding
the common safety IRQ line support. Please fix it.

> 
> Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.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  |  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,

1. For the sake of unification please use the REQ_IRQ_ERR_SFTY id
instead, since the individual UE and CE IRQs have already been defined
that way.

2. For readability please group up the IRQs of the same type. Like
this:
+	REQ_IRQ_ERR_SFTY,
  	REQ_IRQ_ERR_SFTY_UE,
 	REQ_IRQ_ERR_SFTY_CE,
* Note it would be also better to have the common IRQ ID being defined
* above the individual ones.

>  	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;

ditto:

+	int sfty_irq;
 	int sfty_ce_irq;
 	int sfty_ue_irq;

Note there is no need in the "common" word in the name, just sfty_irq
is enough to infer that it's a common IRQ number.

>  	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;

ditto:
+	int sfty_irq;
 	int sfty_ce_irq;
 	int sfty_ue_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);

s/SAFETY/SFTY
s/common_//
s/safety/sfty

> +		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) {

s/common_//
s/safety/sfty

> +		ret = request_irq(priv->safety_common_irq, stmmac_safety_interrupt,

s/safety_common_irq/sfty_irq

> +				  0, "safety", dev);

The rest of the IRQ names are determined as:

		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);

For maintainability it would be better to keep the code unified and
have the same pattern implemented here too.

> +		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;

s/common_//
s/safety/sfty
s/SAFETY/SFTY

> +			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;
> +

s/common_//
s/safety/sfty

>  	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");

Please define the IRQ resource name as "sfty" to be looking as the
individual safety IRQ names.

> +
> +	if (stmmac_res->safety_common_irq < 0) {
> +		if (stmmac_res->safety_common_irq == -EPROBE_DEFER)

s/common_//
s/safety/sfty

-Serge(y)

> +			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
> 
> 

Re: [PATCH net-next v5 3/3] net: stmmac: Add driver support for DWMAC5 safety IRQ support

[Suraj Jaiswal]

hi Serge,
Taken care of below comment in the next version . Please review 

Thanks
Suraj

On 12/11/2023 7:25 PM, Serge Semin wrote:
> Hi Suraj
> 
>> [PATCH net-next v5 3/3] net: stmmac: Add driver support for DWMAC5 safety IRQ support
> On Mon, Dec 11, 2023 at 01:31:53PM +0530, Suraj Jaiswal wrote:
>> 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.
> 
> I guess the subject and the patch log are a bit misleading. Safety
> IRQs have been supported by the kernel since commit 8bf993a5877e
> ("net: stmmac: Add support for DWMAC5 and implement Safety Features").
> Meanwhile based on the patch body what you are doing here is adding
> the common safety IRQ line support. Please fix it.
> 
>>
>> Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.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  |  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,
> 
> 1. For the sake of unification please use the REQ_IRQ_ERR_SFTY id
> instead, since the individual UE and CE IRQs have already been defined
> that way.
> 
> 2. For readability please group up the IRQs of the same type. Like
> this:
> +	REQ_IRQ_ERR_SFTY,
>   	REQ_IRQ_ERR_SFTY_UE,
>  	REQ_IRQ_ERR_SFTY_CE,
> * Note it would be also better to have the common IRQ ID being defined
> * above the individual ones.
> 
>>  	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;
> 
> ditto:
> 
> +	int sfty_irq;
>  	int sfty_ce_irq;
>  	int sfty_ue_irq;
> 
> Note there is no need in the "common" word in the name, just sfty_irq
> is enough to infer that it's a common IRQ number.
> 
>>  	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;
> 
> ditto:
> +	int sfty_irq;
>  	int sfty_ce_irq;
>  	int sfty_ue_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);
> 
> s/SAFETY/SFTY
> s/common_//
> s/safety/sfty
> 
>> +		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) {
> 
> s/common_//
> s/safety/sfty
> 
>> +		ret = request_irq(priv->safety_common_irq, stmmac_safety_interrupt,
> 
> s/safety_common_irq/sfty_irq
> 
>> +				  0, "safety", dev);
> 
> The rest of the IRQ names are determined as:
> 
> 		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);
> 
> For maintainability it would be better to keep the code unified and
> have the same pattern implemented here too.
> 
>> +		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;
> 
> s/common_//
> s/safety/sfty
> s/SAFETY/SFTY
> 
>> +			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;
>> +
> 
> s/common_//
> s/safety/sfty
> 
>>  	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");
> 
> Please define the IRQ resource name as "sfty" to be looking as the
> individual safety IRQ names.
> 
>> +
>> +	if (stmmac_res->safety_common_irq < 0) {
>> +		if (stmmac_res->safety_common_irq == -EPROBE_DEFER)
> 
> s/common_//
> s/safety/sfty
> 
> -Serge(y)
> 
>> +			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
>>
>>