From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 114131714B7; Tue, 8 Jul 2025 16:32:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751992335; cv=none; b=FOy/DaC6krzITK5e85+OhWtdhj+VwXk/tBXyGH2bOJvBY8Hsctoh/L3sYauxYB9gIeL/QZHI8iSnC4uFkJV9dwqTnVcKRbkGPt2Y2Di0kGODExcqan5meaR1csTVIJCmb9e2jSs+y5a+qUBpYdUT2DW/LBf31ib7c3etd1GYq9Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751992335; c=relaxed/simple; bh=mIG8fdPWVxPW4GBGpbcyhLRNGgcbjmdg5wAIuO2BzyU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IyOL159fvCaF5jeT4xIw2YGKr+XdsAPS04OfHCd4UdSU4EA02opJ9wtkT4HnKzvMaorZQ9BLbt4LnntA3btSEOtWqSfkiQZZvVJbZktNtrcr8toSOipLB4UGI+SqJJV8l27kj/3USs2SrSV6duBD80YqH3WmODYsbasdZuInNoM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=sdAN6bSh; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="sdAN6bSh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 88CA4C4CEED; Tue, 8 Jul 2025 16:32:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751992334; bh=mIG8fdPWVxPW4GBGpbcyhLRNGgcbjmdg5wAIuO2BzyU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sdAN6bShP8/CLkO7bhbtXupL+r9u2Vj2k75Y8nY6koPkV3eA+wz0R2VSkJk6C6pIv +GyO0+8e7gMqKB3LkzXMMiC7dP2xNeKkWkNQkWTrLtmHm8av+SdGUixMqEYNn3cpiy 3Jg3KGlSoJtHAnnhODvp+HGE3IqaCiRJmskgMefI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Raju Rangoju , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.6 057/132] amd-xgbe: align CL37 AN sequence as per databook Date: Tue, 8 Jul 2025 18:22:48 +0200 Message-ID: <20250708162232.328001492@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162230.765762963@linuxfoundation.org> References: <20250708162230.765762963@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Raju Rangoju [ Upstream commit 42fd432fe6d320323215ebdf4de4d0d7e56e6792 ] Update the Clause 37 Auto-Negotiation implementation to properly align with the PCS hardware specifications: - Fix incorrect bit settings in Link Status and Link Duplex fields - Implement missing sequence steps 2 and 7 These changes ensure CL37 auto-negotiation protocol follows the exact sequence patterns as specified in the hardware databook. Fixes: 1bf40ada6290 ("amd-xgbe: Add support for clause 37 auto-negotiation") Signed-off-by: Raju Rangoju Link: https://patch.msgid.link/20250630192636.3838291-1-Raju.Rangoju@amd.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/amd/xgbe/xgbe-common.h | 2 ++ drivers/net/ethernet/amd/xgbe/xgbe-mdio.c | 9 +++++++++ drivers/net/ethernet/amd/xgbe/xgbe.h | 4 ++-- 3 files changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h index 3b70f67376331..aa25a8a0a106f 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h @@ -1373,6 +1373,8 @@ #define MDIO_VEND2_CTRL1_SS13 BIT(13) #endif +#define XGBE_VEND2_MAC_AUTO_SW BIT(9) + /* MDIO mask values */ #define XGBE_AN_CL73_INT_CMPLT BIT(0) #define XGBE_AN_CL73_INC_LINK BIT(1) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c index 4a2dc705b5280..154e7598a32bf 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c @@ -375,6 +375,10 @@ static void xgbe_an37_set(struct xgbe_prv_data *pdata, bool enable, reg |= MDIO_VEND2_CTRL1_AN_RESTART; XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_CTRL1, reg); + + reg = XMDIO_READ(pdata, MDIO_MMD_VEND2, MDIO_PCS_DIG_CTRL); + reg |= XGBE_VEND2_MAC_AUTO_SW; + XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_PCS_DIG_CTRL, reg); } static void xgbe_an37_restart(struct xgbe_prv_data *pdata) @@ -1003,6 +1007,11 @@ static void xgbe_an37_init(struct xgbe_prv_data *pdata) netif_dbg(pdata, link, pdata->netdev, "CL37 AN (%s) initialized\n", (pdata->an_mode == XGBE_AN_MODE_CL37) ? "BaseX" : "SGMII"); + + reg = XMDIO_READ(pdata, MDIO_MMD_AN, MDIO_CTRL1); + reg &= ~MDIO_AN_CTRL1_ENABLE; + XMDIO_WRITE(pdata, MDIO_MMD_AN, MDIO_CTRL1, reg); + } static void xgbe_an73_init(struct xgbe_prv_data *pdata) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index 173f4dad470f5..a596cd08124fa 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -292,12 +292,12 @@ #define XGBE_LINK_TIMEOUT 5 #define XGBE_KR_TRAINING_WAIT_ITER 50 -#define XGBE_SGMII_AN_LINK_STATUS BIT(1) +#define XGBE_SGMII_AN_LINK_DUPLEX BIT(1) #define XGBE_SGMII_AN_LINK_SPEED (BIT(2) | BIT(3)) #define XGBE_SGMII_AN_LINK_SPEED_10 0x00 #define XGBE_SGMII_AN_LINK_SPEED_100 0x04 #define XGBE_SGMII_AN_LINK_SPEED_1000 0x08 -#define XGBE_SGMII_AN_LINK_DUPLEX BIT(4) +#define XGBE_SGMII_AN_LINK_STATUS BIT(4) /* ECC correctable error notification window (seconds) */ #define XGBE_ECC_LIMIT 60 -- 2.39.5