Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757083AbdCUJnC (ORCPT ); Tue, 21 Mar 2017 05:43:02 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:43472 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1756317AbdCUJmh (ORCPT ); Tue, 21 Mar 2017 05:42:37 -0400 From: To: , , , , , CC: , , , , , , , , Subject: [PATCH net-next v2 3/5] net-next: ethernet: mediatek: add CDM able to recognize the tag for DSA Date: Tue, 21 Mar 2017 17:35:08 +0800 Message-ID: <1490088910-19405-4-git-send-email-sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1490088910-19405-1-git-send-email-sean.wang@mediatek.com> References: <1490088910-19405-1-git-send-email-sean.wang@mediatek.com> MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1728 Lines: 48 From: Sean Wang The patch adds the setup for allowing CDM can recognize these packets with carrying port-distinguishing tag. Otherwise, these tagging packets will be handled incorrectly by CDM. The setup is working out for general untag packets as well. Signed-off-by: Sean Wang Signed-off-by: Landen Chao --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 6 ++++++ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 4 ++++ 2 files changed, 10 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 9e75768..c21ed99 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1846,6 +1846,12 @@ static int mtk_hw_init(struct mtk_eth *eth) /* GE2, Force 1000M/FD, FC ON */ mtk_w32(eth, MAC_MCR_FIXED_LINK, MTK_MAC_MCR(1)); + /* Indicates CDM to parse the MTK special tag from CPU + * which also is working out for untag packets. + */ + val = mtk_r32(eth, MTK_CDMQ_IG_CTRL); + mtk_w32(eth, val | MTK_CDMQ_STAG_EN, MTK_CDMQ_IG_CTRL); + /* Enable RX VLan Offloading */ mtk_w32(eth, 1, MTK_CDMP_EG_CTRL); diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index 99b1c8e..996024d 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -70,6 +70,10 @@ /* Frame Engine Interrupt Grouping Register */ #define MTK_FE_INT_GRP 0x20 +/* CDMP Ingress Control Register */ +#define MTK_CDMQ_IG_CTRL 0x1400 +#define MTK_CDMQ_STAG_EN BIT(0) + /* CDMP Exgress Control Register */ #define MTK_CDMP_EG_CTRL 0x404 -- 1.9.1