From patchwork Fri Feb 26 14:21:41 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Crispin X-Patchwork-Id: 8437711 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id EBE9B9F2F0 for ; Fri, 26 Feb 2016 14:25:57 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DA4F5203AC for ; Fri, 26 Feb 2016 14:25:56 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B51E0203A5 for ; Fri, 26 Feb 2016 14:25:55 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aZJJd-0008EZ-GM; Fri, 26 Feb 2016 14:24:21 +0000 Received: from arrakis.dune.hu ([78.24.191.176]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aZJID-0006nr-AM; Fri, 26 Feb 2016 14:22:57 +0000 Received: from arrakis.dune.hu (localhost [127.0.0.1]) by arrakis.dune.hu (Postfix) with ESMTP id 75BAA287406; Fri, 26 Feb 2016 15:22:16 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost.localdomain (p548C9F76.dip0.t-ipconnect.de [84.140.159.118]) by arrakis.dune.hu (Postfix) with ESMTPSA; Fri, 26 Feb 2016 15:22:16 +0100 (CET) From: John Crispin To: "David S. Miller" Subject: [PATCH V2 09/12] net-next: mediatek: add support for mt7621 Date: Fri, 26 Feb 2016 15:21:41 +0100 Message-Id: <1456496504-50429-10-git-send-email-blogic@openwrt.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1456496504-50429-1-git-send-email-blogic@openwrt.org> References: <1456496504-50429-1-git-send-email-blogic@openwrt.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160226_062254_085757_394E644C X-CRM114-Status: GOOD ( 17.64 ) X-Spam-Score: -1.9 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Fred=20Chang=20=28=E5=BC=B5=E5=98=89=E5=AE=8F=29?= , Felix Fietkau , =?UTF-8?q?Steven=20Liu=20=28=E5=8A=89=E4=BA=BA=E8=B1=AA=29?= , netdev@vger.kernel.org, =?UTF-8?q?Carlos=20Huang=20=28=E9=BB=83=E5=A3=AB=E5=BD=B0=29?= , linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, Matthias Brugger , Michael Lee , linux-arm-kernel@lists.infradead.org, John Crispin MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for SoCs from the mt7621 family. These all have 2 GMAC ports, both of which are attached to the same internal 1000MBit switch. Currently we only support GMAC1 as the sole CPU port. MT7621 is very similar to MT7620 with only a few registers having different offsets. MT7621 is the first SoC to have the new QDMA engine builtin. The older PDMA engine is also present. unfortunatley, to get the best performance we need to run RX on PDMA and TX on QDMA. This SoC is also the first to have TX vlan offloading and TSO6 support. Signed-off-by: John Crispin Signed-off-by: Felix Fietkau Signed-off-by: Michael Lee --- drivers/net/ethernet/mediatek/soc_mt7621.c | 148 ++++++++++++++++++++++++++++ 1 file changed, 148 insertions(+) create mode 100644 drivers/net/ethernet/mediatek/soc_mt7621.c diff --git a/drivers/net/ethernet/mediatek/soc_mt7621.c b/drivers/net/ethernet/mediatek/soc_mt7621.c new file mode 100644 index 0000000..dcc3289 --- /dev/null +++ b/drivers/net/ethernet/mediatek/soc_mt7621.c @@ -0,0 +1,148 @@ +/* This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Copyright (C) 2009-2016 John Crispin + * Copyright (C) 2009-2016 Felix Fietkau + * Copyright (C) 2013-2016 Michael Lee + */ + +#include +#include +#include +#include + +#include + +#include "mtk_eth_soc.h" +#include "gsw_mt7620.h" +#include "mdio.h" + +#define MT7620_CDMA_CSG_CFG 0x400 +#define MT7621_CDMP_IG_CTRL (MT7620_CDMA_CSG_CFG + 0x00) +#define MT7621_CDMP_EG_CTRL (MT7620_CDMA_CSG_CFG + 0x04) +#define MT7621_RESET_FE BIT(6) +#define MT7621_L4_VALID BIT(24) + +#define MT7621_TX_DMA_UDF BIT(19) + +#define CDMA_ICS_EN BIT(2) +#define CDMA_UCS_EN BIT(1) +#define CDMA_TCS_EN BIT(0) + +#define GDMA_ICS_EN BIT(22) +#define GDMA_TCS_EN BIT(21) +#define GDMA_UCS_EN BIT(20) + +/* frame engine counters */ +#define MT7621_REG_MIB_OFFSET 0x2000 +#define MT7621_PPE_AC_BCNT0 (MT7621_REG_MIB_OFFSET + 0x00) +#define MT7621_GDM1_TX_GBCNT (MT7621_REG_MIB_OFFSET + 0x400) +#define MT7621_GDM2_TX_GBCNT (MT7621_GDM1_TX_GBCNT + 0x40) + +#define GSW_REG_GDMA1_MAC_ADRL 0x508 +#define GSW_REG_GDMA1_MAC_ADRH 0x50C + +#define MT7621_MTK_RST_GL 0x04 +#define MT7620_MTK_INT_STATUS2 0x08 + +/* MTK_INT_STATUS reg on mt7620 define CNT_GDM1_AF at BIT(29) + * but after test it should be BIT(13). + */ +#define MT7621_MTK_GDM1_AF BIT(28) +#define MT7621_MTK_GDM2_AF BIT(29) + +static const u16 mt7621_reg_table[MTK_REG_COUNT] = { + [MTK_REG_PDMA_GLO_CFG] = RT5350_PDMA_GLO_CFG, + [MTK_REG_PDMA_RST_CFG] = RT5350_PDMA_RST_CFG, + [MTK_REG_DLY_INT_CFG] = RT5350_DLY_INT_CFG, + [MTK_REG_TX_BASE_PTR0] = RT5350_TX_BASE_PTR0, + [MTK_REG_TX_MAX_CNT0] = RT5350_TX_MAX_CNT0, + [MTK_REG_TX_CTX_IDX0] = RT5350_TX_CTX_IDX0, + [MTK_REG_TX_DTX_IDX0] = RT5350_TX_DTX_IDX0, + [MTK_REG_RX_BASE_PTR0] = RT5350_RX_BASE_PTR0, + [MTK_REG_RX_MAX_CNT0] = RT5350_RX_MAX_CNT0, + [MTK_REG_RX_CALC_IDX0] = RT5350_RX_CALC_IDX0, + [MTK_REG_RX_DRX_IDX0] = RT5350_RX_DRX_IDX0, + [MTK_REG_MTK_INT_ENABLE] = RT5350_MTK_INT_ENABLE, + [MTK_REG_MTK_INT_STATUS] = RT5350_MTK_INT_STATUS, + [MTK_REG_MTK_DMA_VID_BASE] = 0, + [MTK_REG_MTK_COUNTER_BASE] = MT7621_GDM1_TX_GBCNT, + [MTK_REG_MTK_RST_GL] = MT7621_MTK_RST_GL, + [MTK_REG_MTK_INT_STATUS2] = MT7620_MTK_INT_STATUS2, +}; + +static void mt7621_mtk_reset(struct mtk_eth *eth) +{ + mtk_reset(eth, MT7621_RESET_FE); +} + +static int mt7621_fwd_config(struct mtk_eth *eth) +{ + /* Setup GMAC1 only, there is no support for GMAC2 yet */ + mtk_w32(eth, mtk_r32(eth, MT7620_GDMA1_FWD_CFG) & ~0xffff, + MT7620_GDMA1_FWD_CFG); + + /* Enable RX checksum */ + mtk_w32(eth, mtk_r32(eth, MT7620_GDMA1_FWD_CFG) | (GDMA_ICS_EN | + GDMA_TCS_EN | GDMA_UCS_EN), + MT7620_GDMA1_FWD_CFG); + + /* Enable RX VLan Offloading */ + mtk_w32(eth, 1, MT7621_CDMP_EG_CTRL); + + return 0; +} + +static void mt7621_set_mac(struct mtk_mac *mac, unsigned char *hwaddr) +{ + unsigned long flags; + + spin_lock_irqsave(&mac->hw->page_lock, flags); + mtk_w32(mac->hw, (hwaddr[0] << 8) | hwaddr[1], GSW_REG_GDMA1_MAC_ADRH); + mtk_w32(mac->hw, (hwaddr[2] << 24) | (hwaddr[3] << 16) | + (hwaddr[4] << 8) | hwaddr[5], + GSW_REG_GDMA1_MAC_ADRL); + spin_unlock_irqrestore(&mac->hw->page_lock, flags); +} + +static struct mtk_soc_data mt7621_data = { + .hw_features = NETIF_F_IP_CSUM | NETIF_F_RXCSUM | + NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX | + NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_IPV6_CSUM, + .dma_type = MTK_PDMA_RX_QDMA_TX, + .dma_ring_size = 256, + .napi_weight = 64, + .new_stats = 1, + .padding_64b = 1, + .rx_2b_offset = 1, + .rx_sg_dma = 1, + .has_switch = 1, + .reset_fe = mt7621_mtk_reset, + .set_mac = mt7621_set_mac, + .fwd_config = mt7621_fwd_config, + .switch_init = mtk_gsw_init, + .reg_table = mt7621_reg_table, + .pdma_glo_cfg = MTK_PDMA_SIZE_16DWORDS, + .rx_int = RT5350_RX_DONE_INT, + .tx_int = RT5350_TX_DONE_INT, + .status_int = MT7621_MTK_GDM1_AF | MT7621_MTK_GDM2_AF, + .checksum_bit = MT7621_L4_VALID, + .has_carrier = mt7620_has_carrier, + .mdio_read = mt7620_mdio_read, + .mdio_write = mt7620_mdio_write, + .mdio_adjust_link = mt7620_mdio_link_adjust, +}; + +const struct of_device_id of_mtk_match[] = { + { .compatible = "mediatek,mt7621-eth", .data = &mt7621_data }, + {}, +}; + +MODULE_DEVICE_TABLE(of, of_mtk_match);