From patchwork Thu Apr 17 16:41:07 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Golle X-Patchwork-Id: 14055852 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4627DC369CF for ; Thu, 17 Apr 2025 16:51:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: Message-ID:Subject:To:From:Date:Reply-To:Cc:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=QAhlePhlNEMZ6YCCSCi0dd5idcD/6+SpAk/nraO4a9U=; b=XoeU7xGhOU42ezpQgXdREqt5vB A9G0/SMy3R8yeEhcf8qwu1I23TyDVqvjWrnHn+8ojaXuCnGV0rwsyT62BI5o+4DouiXE7lG5VJUC7 ROejL0CBNEC0tEWAURgLzLv6/lpbPCwwwReebQ91AQYDtEZIZuYff0vg3Hg+7cCTzag8b6sma8qkl 3v7cwuR78vIAGVeWNt+JqBbgIi+Ua/bfGXfgX81cbN2Fq4ptNGgerUPQHFt4Zhflt0V2IZ1Ybh9P5 pzGA/ScJD2tI8M7LNMiQqFAmtEJV4jWM4fP2/KeUVhUrb5PINo3MMomAoNr6761zwBmu3KlOsQ5gL HgnloSqQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u5SSW-0000000Dj8r-2uLy; Thu, 17 Apr 2025 16:51:28 +0000 Received: from pidgin.makrotopia.org ([2a07:2ec0:3002::65]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u5SIj-0000000DhY5-0GZj; Thu, 17 Apr 2025 16:41:22 +0000 Received: from local by pidgin.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.98.2) (envelope-from ) id 1u5SG0-000000002Yi-3JBN; Thu, 17 Apr 2025 16:41:10 +0000 Date: Thu, 17 Apr 2025 17:41:07 +0100 From: Daniel Golle To: Felix Fietkau , Sean Wang , Lorenzo Bianconi , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Matthias Brugger , AngeloGioacchino Del Regno , Daniel Golle , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH net v3] net: ethernet: mtk_eth_soc: net: revise NETSYSv3 hardware configuration Message-ID: MIME-Version: 1.0 Content-Disposition: inline X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250417_094121_101267_81CD5599 X-CRM114-Status: GOOD ( 11.73 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Bo-Cun Chen Change hardware configuration for the NETSYSv3. - Enable PSE dummy page mechanism for the GDM1/2/3 - Enable PSE drop mechanism when the WDMA Rx ring full - Enable PSE no-drop mechanism for packets from the WDMA Tx - Correct PSE free drop threshold - Correct PSE CDMA high threshold Fixes: 1953f134a1a8b ("net: ethernet: mtk_eth_soc: add NETSYS_V3 version support") Signed-off-by: Bo-Cun Chen Signed-off-by: Daniel Golle --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 24 +++++++++++++++++---- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 10 ++++++++- 2 files changed, 29 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index bdb98c9d8b1c1..47807b2023104 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -4043,11 +4043,27 @@ static int mtk_hw_init(struct mtk_eth *eth, bool reset) mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP); if (mtk_is_netsys_v3_or_greater(eth)) { - /* PSE should not drop port1, port8 and port9 packets */ - mtk_w32(eth, 0x00000302, PSE_DROP_CFG); + /* PSE dummy page mechanism */ + mtk_w32(eth, PSE_DUMMY_WORK_GDM(1) | PSE_DUMMY_WORK_GDM(2) | + PSE_DUMMY_WORK_GDM(3) | DUMMY_PAGE_THR, PSE_DUMY_REQ); + + /* PSE free buffer drop threshold */ + mtk_w32(eth, 0x00600009, PSE_IQ_REV(8)); + + /* PSE should not drop port8, port9 and port13 packets from + * WDMA Tx + */ + mtk_w32(eth, 0x00002300, PSE_DROP_CFG); + + /* PSE should drop packets to port8, port9 and port13 on WDMA Rx + * ring full + */ + mtk_w32(eth, 0x00002300, PSE_PPE_DROP(0)); + mtk_w32(eth, 0x00002300, PSE_PPE_DROP(1)); + mtk_w32(eth, 0x00002300, PSE_PPE_DROP(2)); /* GDM and CDM Threshold */ - mtk_w32(eth, 0x00000707, MTK_CDMW0_THRES); + mtk_w32(eth, 0x08000707, MTK_CDMW0_THRES); mtk_w32(eth, 0x00000077, MTK_CDMW1_THRES); /* Disable GDM1 RX CRC stripping */ @@ -4064,7 +4080,7 @@ static int mtk_hw_init(struct mtk_eth *eth, bool reset) mtk_w32(eth, 0x00000300, PSE_DROP_CFG); /* PSE should drop packets to port 8/9 on WDMA Rx ring full */ - mtk_w32(eth, 0x00000300, PSE_PPE0_DROP); + mtk_w32(eth, 0x00000300, PSE_PPE_DROP(0)); /* PSE Free Queue Flow Control */ mtk_w32(eth, 0x01fa01f4, PSE_FQFC_CFG2); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 39709649ea8d1..88ef2e9c50fc1 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -151,7 +151,15 @@ #define PSE_FQFC_CFG1 0x100 #define PSE_FQFC_CFG2 0x104 #define PSE_DROP_CFG 0x108 -#define PSE_PPE0_DROP 0x110 +#define PSE_PPE_DROP(x) (0x110 + ((x) * 0x4)) + +/* PSE Last FreeQ Page Request Control */ +#define PSE_DUMY_REQ 0x10C +/* PSE_DUMY_REQ is not a typo but actually called like that also in + * MediaTek's datasheet + */ +#define PSE_DUMMY_WORK_GDM(x) BIT(16 + (x)) +#define DUMMY_PAGE_THR 0x1 /* PSE Input Queue Reservation Register*/ #define PSE_IQ_REV(x) (0x140 + (((x) - 1) << 2))