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([82.78.167.103]) by smtp.gmail.com with ESMTPSA id ll9-20020a170907190900b00a1da2f7c1d8sm9240877ejc.77.2023.12.14.03.46.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Dec 2023 03:46:30 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, richardcochran@gmail.com, p.zabel@pengutronix.de, yoshihiro.shimoda.uh@renesas.com, wsa+renesas@sang-engineering.com, geert+renesas@glider.be Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Claudiu Beznea Subject: [PATCH net-next v2 08/21] net: ravb: Move the IRQs get and request in the probe function Date: Thu, 14 Dec 2023 13:45:47 +0200 Message-Id: <20231214114600.2451162-9-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231214114600.2451162-1-claudiu.beznea.uj@bp.renesas.com> References: <20231214114600.2451162-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org From: Claudiu Beznea Move the IRQs get and request in the driver's probe function. As some IP variants switches to reset operation mode as a result of setting module standby through clock enable/disable APIs, to implement runtime PM the resource parsing and requests are moved in the probe function and IP settings are moved in the open functions. This is a preparatory change to add runtime PM support for all IP variants. Signed-off-by: Claudiu Beznea --- Changes in v2: - none; this patch is new drivers/net/ethernet/renesas/ravb_main.c | 274 +++++++++++------------ 1 file changed, 132 insertions(+), 142 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 83691a0f0cc2..d7f6e8ea8e79 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -1731,7 +1731,7 @@ static inline int ravb_hook_irq(unsigned int irq, irq_handler_t handler, name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s", ndev->name, ch); if (!name) return -ENOMEM; - error = request_irq(irq, handler, 0, name, ndev); + error = devm_request_irq(dev, irq, handler, 0, name, ndev); if (error) netdev_err(ndev, "cannot request IRQ %s\n", name); @@ -1755,63 +1755,16 @@ static int ravb_open(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); const struct ravb_hw_info *info = priv->info; - struct platform_device *pdev = priv->pdev; - struct device *dev = &pdev->dev; int error; napi_enable(&priv->napi[RAVB_BE]); if (info->nc_queues) napi_enable(&priv->napi[RAVB_NC]); - if (!info->multi_irqs) { - error = request_irq(ndev->irq, ravb_interrupt, IRQF_SHARED, - ndev->name, ndev); - if (error) { - netdev_err(ndev, "cannot request IRQ\n"); - goto out_napi_off; - } - } else { - error = ravb_hook_irq(ndev->irq, ravb_multi_interrupt, ndev, - dev, "ch22:multi"); - if (error) - goto out_napi_off; - error = ravb_hook_irq(priv->emac_irq, ravb_emac_interrupt, ndev, - dev, "ch24:emac"); - if (error) - goto out_free_irq; - error = ravb_hook_irq(priv->rx_irqs[RAVB_BE], ravb_be_interrupt, - ndev, dev, "ch0:rx_be"); - if (error) - goto out_free_irq_emac; - error = ravb_hook_irq(priv->tx_irqs[RAVB_BE], ravb_be_interrupt, - ndev, dev, "ch18:tx_be"); - if (error) - goto out_free_irq_be_rx; - error = ravb_hook_irq(priv->rx_irqs[RAVB_NC], ravb_nc_interrupt, - ndev, dev, "ch1:rx_nc"); - if (error) - goto out_free_irq_be_tx; - error = ravb_hook_irq(priv->tx_irqs[RAVB_NC], ravb_nc_interrupt, - ndev, dev, "ch19:tx_nc"); - if (error) - goto out_free_irq_nc_rx; - - if (info->err_mgmt_irqs) { - error = ravb_hook_irq(priv->erra_irq, ravb_multi_interrupt, - ndev, dev, "err_a"); - if (error) - goto out_free_irq_nc_tx; - error = ravb_hook_irq(priv->mgmta_irq, ravb_multi_interrupt, - ndev, dev, "mgmt_a"); - if (error) - goto out_free_irq_erra; - } - } - /* Device init */ error = ravb_dmac_init(ndev); if (error) - goto out_free_irq_mgmta; + goto out_napi_off; ravb_emac_init(ndev); /* Initialise PTP Clock driver */ @@ -1832,26 +1785,6 @@ static int ravb_open(struct net_device *ndev) if (info->gptp) ravb_ptp_stop(ndev); ravb_stop_dma(ndev); -out_free_irq_mgmta: - if (!info->multi_irqs) - goto out_free_irq; - if (info->err_mgmt_irqs) - free_irq(priv->mgmta_irq, ndev); -out_free_irq_erra: - if (info->err_mgmt_irqs) - free_irq(priv->erra_irq, ndev); -out_free_irq_nc_tx: - free_irq(priv->tx_irqs[RAVB_NC], ndev); -out_free_irq_nc_rx: - free_irq(priv->rx_irqs[RAVB_NC], ndev); -out_free_irq_be_tx: - free_irq(priv->tx_irqs[RAVB_BE], ndev); -out_free_irq_be_rx: - free_irq(priv->rx_irqs[RAVB_BE], ndev); -out_free_irq_emac: - free_irq(priv->emac_irq, ndev); -out_free_irq: - free_irq(ndev->irq, ndev); out_napi_off: if (info->nc_queues) napi_disable(&priv->napi[RAVB_NC]); @@ -2177,19 +2110,6 @@ static int ravb_close(struct net_device *ndev) cancel_work_sync(&priv->work); - if (info->multi_irqs) { - free_irq(priv->tx_irqs[RAVB_NC], ndev); - free_irq(priv->rx_irqs[RAVB_NC], ndev); - free_irq(priv->tx_irqs[RAVB_BE], ndev); - free_irq(priv->rx_irqs[RAVB_BE], ndev); - free_irq(priv->emac_irq, ndev); - if (info->err_mgmt_irqs) { - free_irq(priv->erra_irq, ndev); - free_irq(priv->mgmta_irq, ndev); - } - } - free_irq(ndev->irq, ndev); - if (info->nc_queues) napi_disable(&priv->napi[RAVB_NC]); napi_disable(&priv->napi[RAVB_BE]); @@ -2616,6 +2536,127 @@ static void ravb_parse_delay_mode(struct device_node *np, struct net_device *nde } } +static int ravb_get_irqs(struct ravb_private *priv) +{ + const char *err_a_irq_name = NULL, *mgmt_a_irq_name = NULL; + const struct ravb_hw_info *info = priv->info; + struct platform_device *pdev = priv->pdev; + struct net_device *ndev = priv->ndev; + const char *irq_name, *emac_irq_name; + int i, irq; + + if (!info->multi_irqs) { + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + ndev->irq = irq; + return 0; + } + + if (info->err_mgmt_irqs) { + irq_name = "dia"; + emac_irq_name = "line3"; + err_a_irq_name = "err_a"; + mgmt_a_irq_name = "mgmt_a"; + } else { + irq_name = "ch22"; + emac_irq_name = "ch24"; + } + + irq = platform_get_irq_byname(pdev, irq_name); + if (irq < 0) + return irq; + ndev->irq = irq; + + irq = platform_get_irq_byname(pdev, emac_irq_name); + if (irq < 0) + return irq; + priv->emac_irq = irq; + + if (err_a_irq_name) { + irq = platform_get_irq_byname(pdev, "err_a"); + if (irq < 0) + return irq; + priv->erra_irq = irq; + } + + if (mgmt_a_irq_name) { + irq = platform_get_irq_byname(pdev, "mgmt_a"); + if (irq < 0) + return irq; + priv->mgmta_irq = irq; + } + + for (i = 0; i < NUM_RX_QUEUE; i++) { + irq = platform_get_irq_byname(pdev, ravb_rx_irqs[i]); + if (irq < 0) + return irq; + priv->rx_irqs[i] = irq; + } + for (i = 0; i < NUM_TX_QUEUE; i++) { + irq = platform_get_irq_byname(pdev, ravb_tx_irqs[i]); + if (irq < 0) + return irq; + priv->tx_irqs[i] = irq; + } + + return 0; +} + +static int ravb_request_irqs(struct ravb_private *priv) +{ + const struct ravb_hw_info *info = priv->info; + struct net_device *ndev = priv->ndev; + struct device *dev = &priv->pdev->dev; + int error; + + if (!info->multi_irqs) { + error = devm_request_irq(dev, ndev->irq, ravb_interrupt, IRQF_SHARED, + ndev->name, ndev); + if (error) + netdev_err(ndev, "cannot request IRQ\n"); + + return error; + } + + error = ravb_hook_irq(ndev->irq, ravb_multi_interrupt, ndev, + dev, "ch22:multi"); + if (error) + return error; + error = ravb_hook_irq(priv->emac_irq, ravb_emac_interrupt, ndev, + dev, "ch24:emac"); + if (error) + return error; + error = ravb_hook_irq(priv->rx_irqs[RAVB_BE], ravb_be_interrupt, + ndev, dev, "ch0:rx_be"); + if (error) + return error; + error = ravb_hook_irq(priv->tx_irqs[RAVB_BE], ravb_be_interrupt, + ndev, dev, "ch18:tx_be"); + if (error) + return error; + error = ravb_hook_irq(priv->rx_irqs[RAVB_NC], ravb_nc_interrupt, + ndev, dev, "ch1:rx_nc"); + if (error) + return error; + error = ravb_hook_irq(priv->tx_irqs[RAVB_NC], ravb_nc_interrupt, + ndev, dev, "ch19:tx_nc"); + if (error) + return error; + + if (!info->err_mgmt_irqs) + return 0; + + error = ravb_hook_irq(priv->erra_irq, ravb_multi_interrupt, + ndev, dev, "err_a"); + if (error) + return error; + + return ravb_hook_irq(priv->mgmta_irq, ravb_multi_interrupt, + ndev, dev, "mgmt_a"); +} + static void ravb_set_delay_mode(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); @@ -2635,9 +2676,8 @@ static int ravb_probe(struct platform_device *pdev) struct reset_control *rstc; struct ravb_private *priv; struct net_device *ndev; - int error, irq, q; struct resource *res; - int i; + int error, q; if (!np) { dev_err(&pdev->dev, @@ -2664,20 +2704,6 @@ static int ravb_probe(struct platform_device *pdev) if (error) goto out_free_netdev; - if (info->multi_irqs) { - if (info->err_mgmt_irqs) - irq = platform_get_irq_byname(pdev, "dia"); - else - irq = platform_get_irq_byname(pdev, "ch22"); - } else { - irq = platform_get_irq(pdev, 0); - } - if (irq < 0) { - error = irq; - goto out_reset_assert; - } - ndev->irq = irq; - SET_NETDEV_DEV(ndev, &pdev->dev); priv = netdev_priv(ndev); @@ -2692,6 +2718,14 @@ static int ravb_probe(struct platform_device *pdev) priv->num_rx_ring[RAVB_NC] = NC_RX_RING_SIZE; } + error = ravb_get_irqs(priv); + if (error) + goto out_reset_assert; + + error = ravb_request_irqs(priv); + if (error) + goto out_reset_assert; + priv->refclk = devm_clk_get_optional(&pdev->dev, "refclk"); if (IS_ERR(priv->refclk)) { error = PTR_ERR(priv->refclk); @@ -2725,50 +2759,6 @@ static int ravb_probe(struct platform_device *pdev) priv->avb_link_active_low = of_property_read_bool(np, "renesas,ether-link-active-low"); - if (info->multi_irqs) { - if (info->err_mgmt_irqs) - irq = platform_get_irq_byname(pdev, "line3"); - else - irq = platform_get_irq_byname(pdev, "ch24"); - if (irq < 0) { - error = irq; - goto out_rpm_put; - } - priv->emac_irq = irq; - for (i = 0; i < NUM_RX_QUEUE; i++) { - irq = platform_get_irq_byname(pdev, ravb_rx_irqs[i]); - if (irq < 0) { - error = irq; - goto out_rpm_put; - } - priv->rx_irqs[i] = irq; - } - for (i = 0; i < NUM_TX_QUEUE; i++) { - irq = platform_get_irq_byname(pdev, ravb_tx_irqs[i]); - if (irq < 0) { - error = irq; - goto out_rpm_put; - } - priv->tx_irqs[i] = irq; - } - - if (info->err_mgmt_irqs) { - irq = platform_get_irq_byname(pdev, "err_a"); - if (irq < 0) { - error = irq; - goto out_rpm_put; - } - priv->erra_irq = irq; - - irq = platform_get_irq_byname(pdev, "mgmt_a"); - if (irq < 0) { - error = irq; - goto out_rpm_put; - } - priv->mgmta_irq = irq; - } - } - priv->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(priv->clk)) { error = PTR_ERR(priv->clk);