Hi Serge, Please find commnet inline & let me know if any further action needed Thanks Suraj On 12/14/2023 8:42 PM, Serge Semin wrote: > Hi Suraj > > On Tue, Dec 12, 2023 at 05:28:41PM +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@xxxxxxxxxxx> >> --- >> drivers/net/ethernet/stmicro/stmmac/common.h | 1 + >> drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 +++ >> .../net/ethernet/stmicro/stmmac/stmmac_main.c | 21 +++++++++++++++++++ >> .../ethernet/stmicro/stmmac/stmmac_platform.c | 9 ++++++++ >> 4 files changed, 34 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..ca3d93851bed 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]; >> @@ -305,6 +307,7 @@ 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 47de466e432c..6cf289f192a7 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; >> @@ -3759,6 +3763,7 @@ static int stmmac_request_irq_single(struct net_device *dev) >> struct stmmac_priv *priv = netdev_priv(dev); >> enum request_irq_err irq_err; >> int ret; > >> + char *int_name; > > See my comment below. > >> >> ret = request_irq(dev->irq, stmmac_interrupt, >> IRQF_SHARED, dev->name, dev); >> @@ -3798,6 +3803,20 @@ static int stmmac_request_irq_single(struct net_device *dev) >> } >> } >> > >> + 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 safety failed %d (error: %d)\n", >> + __func__, priv->sfty_irq, ret); >> + irq_err = REQ_IRQ_ERR_SFTY; >> + goto irq_error; >> + } >> + } >> + > > Omg, I thought this change belonged to stmmac_request_irq_multi_msi(). > My bad, sorry. Please move the code above to > stmmac_request_irq_multi_msi() and get back the part in > stmmac_request_irq_single() as it was in v5, but instead of specifying > "safety" IRQ name use "dev->name" as the rest of similar code snippets > in here have: > > + if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) { > + ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt, > + 0, dev->name, dev); > + if (unlikely(ret < 0)) { > + netdev_err(priv->dev, > + "%s: alloc safety failed %d (error: %d)\n", > + __func__, priv->sfty_irq, ret); > + irq_err = REQ_IRQ_ERR_SFTY; > + goto irq_error; > + } > + } <Suraj> We can not use "dev->name" as this is name already used by "stmmac_interrupt" @ https://elixir.bootlin.com/linux/v6.1.68/source/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c#L3655. < ret = request_irq(dev->irq, stmmac_interrupt, IRQF_SHARED, dev->name, dev); > if we are using same "dev->name" while requesting safety IRQ as well then "/proc/interrupt" will show same name eth0/eth1 for both "stmmac_interrupt" & "safety interrupt" and by looking at "/proc/interrupt" output we can not say which IRQ is for safety and which is for stmmac_interrupt. > > I guess at some point afterwards we'll need to refactor the IRQs > request part of this driver: replace stmmac_request_irq_single() body > with the upper part of the stmmac_request_irq_multi_msi() method and > then just make the former method being called from the later one... > >> return 0; >> >> irq_error: >> @@ -7462,8 +7481,10 @@ 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; > >> + > > Please drop this change. The code below is attached to the code above > because it basically does the same but in the loop. <Suraj> below loop code "for (i = 0; i < MTL_MAX_RX_QUEUES; i++) priv->rx_irq[i] = res->rx_irq[i];" is not for rx_irq array and will not help for safety irq. Let me know if I got your commnet properly . > >> 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..3808a3225a7d 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->sfty_irq = >> + platform_get_irq_byname_optional(pdev, "sfty"); > >> + > > Please drop this change too. It's normal to have a method call > attached to the error check statement especially seeing the rest of > the similar code snippets are designed that way in this function. <Suraj> Do you means to remove all below code where we are printing the dev_info() message ? We added this code similar to LPM code. > > -Serge(y) > >> + 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 >> >>