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Message-ID: <351eb4d2-4d14-4a4d-ac14-a0189e6614cc@quicinc.com>
Date: Thu, 21 Dec 2023 13:07:22 +0530
From: Suraj Jaiswal <quic_jsuraj@...cinc.com>
To: Serge Semin <fancer.lancer@...il.com>
CC: 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>, Rob Herring
<robh@...nel.org>,
<kernel@...cinc.com>
Subject: Re: [PATCH net-next v7 3/3] net: stmmac: Add driver support for
DWMAC5 common safety IRQ
hi Serge,
taken care of comments please review.
Thanks
Suraj
On 12/20/2023 8:20 PM, Serge Semin wrote:
> Hi Suraj
>
> On Tue, Dec 19, 2023 at 04:18:15PM +0530, Suraj Jaiswal wrote:
>> 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@...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 | 35 +++++++++++++++++++
>> .../ethernet/stmicro/stmmac/stmmac_platform.c | 8 +++++
>> 4 files changed, 46 insertions(+)
>>
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
>> index 721c1f8e892f..b9233b09b80f 100644
>> --- a/drivers/net/ethernet/stmicro/stmmac/common.h
>> +++ b/drivers/net/ethernet/stmicro/stmmac/common.h
>> @@ -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,
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
>> index 9f89acf31050..9aeaca01cace 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];
>> @@ -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];
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
>> index 47de466e432c..f6639ffb017e 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_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 +3665,21 @@ 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) {
>> + ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
>> + 0, dev->name, dev);
>
> Not entirely what I asked. What I asked was to make the code unified in
> the respective IRQ-request methods. You just copy-and-pasted the same
> code snippet in both functions. To see what I meant please find the
> diff attached to this message. It's applicable on top of this patch.
>
>> + if (unlikely(ret < 0)) {
>> + netdev_err(priv->dev,
>
>> + "%s: alloc safety failed %d (error: %d)\n",
>> + __func__, priv->sfty_irq, ret);
>
> This looks different than the rest of the error messages in this
> method (see the attached diff).
>
>> + 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 +3817,21 @@ 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,
>> + 0, dev->name, dev);
>
> IRQF_SHARED?
>
>> + if (unlikely(ret < 0)) {
>
>> + netdev_err(priv->dev,
>> + "%s: alloc safety failed %d (error: %d)\n",
>> + __func__, priv->sfty_irq, ret);
>
> This also looks different than the rest of the error messages in this
> method (see the attached diff).
>
> Some other comments I'll send to v8 after all the above finally fixed.
>
> -Serge(y)
>
>> + irq_err = REQ_IRQ_ERR_SFTY;
>> + goto irq_error;
>> + }
>> + }
>> +
>> return 0;
>>
>> irq_error:
>> @@ -7462,6 +7496,7 @@ 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..ab250161fd79 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 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
>>
>>
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