From patchwork Thu Aug 3 11:30:35 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feiyang Chen X-Patchwork-Id: 13339847 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9EAD31E501 for ; Thu, 3 Aug 2023 11:30:53 +0000 (UTC) Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id DE3401982 for ; Thu, 3 Aug 2023 04:30:51 -0700 (PDT) Received: from loongson.cn (unknown [112.20.109.245]) by gateway (Coremail) with SMTP id _____8Cx7+vqj8tkaa0PAA--.35388S3; Thu, 03 Aug 2023 19:30:50 +0800 (CST) Received: from localhost.localdomain (unknown [112.20.109.245]) by localhost.localdomain (Coremail) with SMTP id AQAAf8AxTSPoj8tkyR5HAA--.34056S3; Thu, 03 Aug 2023 19:30:50 +0800 (CST) From: Feiyang Chen To: andrew@lunn.ch, hkallweit1@gmail.com, peppe.cavallaro@st.com, alexandre.torgue@foss.st.com, joabreu@synopsys.com, chenhuacai@loongson.cn Cc: Feiyang Chen , linux@armlinux.org.uk, dongbiao@loongson.cn, loongson-kernel@lists.loongnix.cn, netdev@vger.kernel.org, loongarch@lists.linux.dev, chris.chenfeiyang@gmail.com Subject: [PATCH v3 14/16] net: stmmac: dwmac-loongson: Disable flow control for GMAC Date: Thu, 3 Aug 2023 19:30:35 +0800 Message-Id: <021e4047c3b0f2c462e1aa891e25ae710705ed29.1691047285.git.chenfeiyang@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8AxTSPoj8tkyR5HAA--.34056S3 X-CM-SenderInfo: hfkh0wphl1t03j6o00pqjv00gofq/ X-Coremail-Antispam: 1Uk129KBj93XoW7ZFyrWrWDCFy3Ww13WrWxuFX_yoW8Aw4Up3 9rAa429rykXF47Jan8Aw4DZFy5Xay7trZrWayIkw4fWa97Kr9aqryYqayYvFy7ArZ8XFya qr4Uur4UCF1DJrbCm3ZEXasCq-sJn29KB7ZKAUJUUUUf529EdanIXcx71UUUUU7KY7ZEXa sCq-sGcSsGvfJ3Ic02F40EFcxC0VAKzVAqx4xG6I80ebIjqfuFe4nvWSU5nxnvy29KBjDU 0xBIdaVrnRJUUUm2b4IE77IF4wAFF20E14v26r1j6r4UM7CY07I20VC2zVCF04k26cxKx2 IYs7xG6rWj6s0DM7CIcVAFz4kK6r1Y6r17M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48v e4kI8wA2z4x0Y4vE2Ix0cI8IcVAFwI0_tr0E3s1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI 0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIE14v26r4UJVWxJr1l84ACjcxK6I8E87Iv6xkF7I0E 14v26F4UJVW0owAaw2AFwI0_JF0_Jw1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqjxCEc2 xF0cIa020Ex4CE44I27wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_ Gryq6s0DMcIj6I8E87Iv67AKxVW8Jr0_Cr1UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG0x vY0x0EwIxGrwACjcxG6xCI17CEII8vrVW3JVW8Jr1lc7CjxVAaw2AFwI0_JF0_Jw1l42xK 82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1l4IxYO2xFxVAFwI0_JF0_Jw1lx2 IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v2 6r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_tr0E3s1lIxAIcVC0I7IYx2 IY6xkF7I0E14v26r4UJVWxJr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2 jsIE14v26r4UJVWxJr1lIxAIcVC2z280aVCY1x0267AKxVW8Jr0_Cr1UYxBIdaVFxhVjvj DU0xZFpf9x07b3iihUUUUU= X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org Loongson GMAC does not support Flow Control feature. Use disable_flow_control flag to disable it. Signed-off-by: Feiyang Chen --- drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c | 1 + drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 5 +++++ include/linux/stmmac.h | 1 + 3 files changed, 7 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c index 18bca996e1cb..40eddadd0bd2 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c @@ -95,6 +95,7 @@ static int loongson_gmac_config(struct pci_dev *pdev, } plat->dma_reset_times = 5; + plat->disable_flow_control = true; return 0; } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 5eafb08e2332..65ee5a681dcf 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3827,6 +3827,11 @@ static int __stmmac_open(struct net_device *dev, __func__, ret); goto init_phy_error; } + + if (priv->plat->disable_flow_control) { + phy_support_sym_pause(dev->phydev); + phy_set_sym_pause(dev->phydev, false, false, true); + } } /* Extra statistics */ diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index 2b59ddbe59ea..07570d808edb 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -360,5 +360,6 @@ struct plat_stmmacenet_data { bool dma_reset_times; u32 control_value; u32 irq_flags; + bool disable_flow_control; }; #endif