[net-next,v3,3/3] net: stmmac: Add driver support for DWMAC5 fault IRQ Support
Commit Message
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@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 | 20 +++++++++++++++++++
4 files changed, 41 insertions(+)
Comments
On 11/23/23 12:38, Suraj Jaiswal wrote:
> 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@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 | 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;
other interrupts use _irq yet you seem to use _intr, plus the
aforementioned "safety" vs "fault" naming
[...]
>
> +int stmmac_get_fault_intr_config(struct platform_device *pdev, struct stmmac_resources *res)
> +{
> + int ret = 0;
get rid of ret and return directly
> +
> + res->safety_common_intr = platform_get_irq_byname(pdev, "safety");
> +
stray newline?
> + 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;
Missing newline between declarations and code
Unnecessary initialization
> 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");
Since you're getting the return value, perhaps the errno should
be propagated
Konrad
On Thu, Nov 23, 2023 at 05:08:15PM +0530, Suraj Jaiswal wrote:
> 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@quicinc.com>
...
> 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)
Hi Suraj,
stmmac_get_fault_intr_config() appears to only be used in this function.
If so it should be static.
Also, please consider limiting Networking code to 80 columns wide.
static int stmmac_get_fault_intr_config(struct platform_device *pdev,
struct stmmac_resources *res)
...
> @@ -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");
This fault/saftey/foobar interrupt is optional? So printing any error
message it is missing does not seem like a good idea.
Andrew
Hi Suraj,
kernel test robot noticed the following build warnings:
[auto build test WARNING on net-next/main]
url: https://github.com/intel-lab-lkp/linux/commits/Suraj-Jaiswal/dt-bindings-net-qcom-ethqos-add-binding-doc-for-fault-IRQ-for-sa8775p/20231123-202252
base: net-next/main
patch link: https://lore.kernel.org/r/62eaaace3713751cb1ecac3163e857737107ca0e.1700737841.git.quic_jsuraj%40quicinc.com
patch subject: [PATCH net-next v3 3/3] net: stmmac: Add driver support for DWMAC5 fault IRQ Support
config: csky-randconfig-r081-20231124 (https://download.01.org/0day-ci/archive/20231124/202311241444.wkNnpI5Q-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231124/202311241444.wkNnpI5Q-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311241444.wkNnpI5Q-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:693:5: warning: no previous prototype for 'stmmac_get_fault_intr_config' [-Wmissing-prototypes]
693 | int stmmac_get_fault_intr_config(struct platform_device *pdev, struct stmmac_resources *res)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/stmmac_get_fault_intr_config +693 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
692
> 693 int stmmac_get_fault_intr_config(struct platform_device *pdev, struct stmmac_resources *res)
694 {
695 int ret = 0;
696
697 res->safety_common_intr = platform_get_irq_byname(pdev, "safety");
698
699 if (res->safety_common_intr < 0) {
700 if (res->safety_common_intr != -EPROBE_DEFER)
701 dev_err(&pdev->dev, "safety IRQ configuration information not found\n");
702 ret = 1;
703 }
704
705 return ret;
706 }
707
Hi Suraj,
kernel test robot noticed the following build warnings:
[auto build test WARNING on net-next/main]
url: https://github.com/intel-lab-lkp/linux/commits/Suraj-Jaiswal/dt-bindings-net-qcom-ethqos-add-binding-doc-for-fault-IRQ-for-sa8775p/20231123-202252
base: net-next/main
patch link: https://lore.kernel.org/r/62eaaace3713751cb1ecac3163e857737107ca0e.1700737841.git.quic_jsuraj%40quicinc.com
patch subject: [PATCH net-next v3 3/3] net: stmmac: Add driver support for DWMAC5 fault IRQ Support
config: arm-defconfig (https://download.01.org/0day-ci/archive/20231124/202311241513.D6JpHWGg-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project.git f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231124/202311241513.D6JpHWGg-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311241513.D6JpHWGg-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:693:5: warning: no previous prototype for function 'stmmac_get_fault_intr_config' [-Wmissing-prototypes]
int stmmac_get_fault_intr_config(struct platform_device *pdev, struct stmmac_resources *res)
^
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:693:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int stmmac_get_fault_intr_config(struct platform_device *pdev, struct stmmac_resources *res)
^
static
1 warning generated.
vim +/stmmac_get_fault_intr_config +693 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
692
> 693 int stmmac_get_fault_intr_config(struct platform_device *pdev, struct stmmac_resources *res)
694 {
695 int ret = 0;
696
697 res->safety_common_intr = platform_get_irq_byname(pdev, "safety");
698
699 if (res->safety_common_intr < 0) {
700 if (res->safety_common_intr != -EPROBE_DEFER)
701 dev_err(&pdev->dev, "safety IRQ configuration information not found\n");
702 ret = 1;
703 }
704
705 return ret;
706 }
707
On Thu, Nov 23, 2023 at 05:08:15PM +0530, Suraj Jaiswal wrote:
> 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@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 | 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;
> +}
I think other reviewers have covered most of what I want to say, but
I think this doesn't deserve its own function and should just be done
directly, as is done for eth_lpi for example. I think it also should be
considered an optional interrupt based on my understanding of its
purpose (just like eth_lpi).
> +
> 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
>
@@ -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,
@@ -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 {
@@ -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++)
@@ -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"