From patchwork Thu Sep 23 14:07:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 12513007 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51184C433EF for ; Thu, 23 Sep 2021 14:08:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3245061019 for ; Thu, 23 Sep 2021 14:08:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241604AbhIWOKD (ORCPT ); Thu, 23 Sep 2021 10:10:03 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:55722 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S241591AbhIWOKC (ORCPT ); Thu, 23 Sep 2021 10:10:02 -0400 X-IronPort-AV: E=Sophos;i="5.85,316,1624287600"; d="scan'208";a="94816069" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 23 Sep 2021 23:08:29 +0900 Received: from localhost.localdomain (unknown [10.226.92.2]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id B7A7B437F0AD; Thu, 23 Sep 2021 23:08:26 +0900 (JST) From: Biju Das To: "David S. Miller" , Jakub Kicinski Cc: Biju Das , Sergey Shtylyov , Lad Prabhakar , Andrew Lunn , Sergei Shtylyov , Geert Uytterhoeven , Adam Ford , Yoshihiro Shimoda , netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Chris Paterson , Biju Das Subject: [RFC/PATCH 03/18] ravb: Initialize GbEthernet dmac Date: Thu, 23 Sep 2021 15:07:58 +0100 Message-Id: <20210923140813.13541-4-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210923140813.13541-1-biju.das.jz@bp.renesas.com> References: <20210923140813.13541-1-biju.das.jz@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Initialize GbEthernet dmac found on RZ/G2L SoC. This patch also renames ravb_rcar_dmac_init to ravb_dmac_init_rcar to be consistent with the naming convention used in sh_eth driver. Signed-off-by: Biju Das --- drivers/net/ethernet/renesas/ravb.h | 4 ++ drivers/net/ethernet/renesas/ravb_main.c | 84 +++++++++++++++++++++++- 2 files changed, 85 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index 0ce0c13ef8cb..bee05e6fb815 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -81,6 +81,7 @@ enum ravb_reg { RQC3 = 0x00A0, RQC4 = 0x00A4, RPC = 0x00B0, + RTC = 0x00B4, /* RZ/G2L only */ UFCW = 0x00BC, UFCS = 0x00C0, UFCV0 = 0x00C4, @@ -156,6 +157,7 @@ enum ravb_reg { TIS = 0x037C, ISS = 0x0380, CIE = 0x0384, /* R-Car Gen3 only */ + RIC3 = 0x0388, /* RZ/G2L only */ GCCR = 0x0390, GMTT = 0x0394, GPTC = 0x0398, @@ -956,6 +958,8 @@ enum RAVB_QUEUE { #define RX_BUF_SZ (2048 - ETH_FCS_LEN + sizeof(__sum16)) +#define RGETH_RX_BUFF_MAX 8192 + struct ravb_tstamp_skb { struct list_head list; struct sk_buff *skb; diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 2422e74d9b4f..54c4d31a6950 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -83,6 +83,11 @@ static int ravb_config(struct net_device *ndev) return error; } +static void ravb_rgeth_set_rate(struct net_device *ndev) +{ + /* Place holder */ +} + static void ravb_set_rate(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); @@ -217,6 +222,11 @@ static int ravb_tx_free(struct net_device *ndev, int q, bool free_txed_only) return free_num; } +static void ravb_rx_ring_free_rgeth(struct net_device *ndev, int q) +{ + /* Place holder */ +} + static void ravb_rx_ring_free(struct net_device *ndev, int q) { struct ravb_private *priv = netdev_priv(ndev); @@ -283,6 +293,11 @@ static void ravb_ring_free(struct net_device *ndev, int q) priv->tx_skb[q] = NULL; } +static void ravb_rx_ring_format_rgeth(struct net_device *ndev, int q) +{ + /* Place holder */ +} + static void ravb_rx_ring_format(struct net_device *ndev, int q) { struct ravb_private *priv = netdev_priv(ndev); @@ -356,6 +371,12 @@ static void ravb_ring_format(struct net_device *ndev, int q) desc->dptr = cpu_to_le32((u32)priv->tx_desc_dma[q]); } +static void *ravb_rgeth_alloc_rx_desc(struct net_device *ndev, int q) +{ + /* Place holder */ + return NULL; +} + static void *ravb_alloc_rx_desc(struct net_device *ndev, int q) { struct ravb_private *priv = netdev_priv(ndev); @@ -426,6 +447,11 @@ static int ravb_ring_init(struct net_device *ndev, int q) return -ENOMEM; } +static void ravb_rgeth_emac_init(struct net_device *ndev) +{ + /* Place holder */ +} + static void ravb_rcar_emac_init(struct net_device *ndev) { /* Receive frame limit set register */ @@ -461,7 +487,32 @@ static void ravb_emac_init(struct net_device *ndev) info->emac_init(ndev); } -static void ravb_rcar_dmac_init(struct net_device *ndev) +static void ravb_dmac_init_rgeth(struct net_device *ndev) +{ + /* Set AVB RX */ + ravb_write(ndev, 0x60000000, RCR); + + /* Set Max Frame Length (RTC) */ + ravb_write(ndev, 0x7ffc0000 | RGETH_RX_BUFF_MAX, RTC); + + /* Set FIFO size */ + ravb_write(ndev, 0x00222200, TGC); + + ravb_write(ndev, 0, TCCR); + + /* Frame receive */ + ravb_write(ndev, RIC0_FRE0, RIC0); + /* Disable FIFO full warning */ + ravb_write(ndev, 0x0, RIC1); + /* Receive FIFO full error, descriptor empty */ + ravb_write(ndev, RIC2_QFE0 | RIC2_RFFE, RIC2); + + ravb_write(ndev, 0x0, RIC3); + + ravb_write(ndev, TIC_FTE0, TIC); +} + +static void ravb_dmac_init_rcar(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); const struct ravb_hw_info *info = priv->info; @@ -579,6 +630,14 @@ static void ravb_rx_csum(struct sk_buff *skb) skb_trim(skb, skb->len - sizeof(__sum16)); } +/* Packet receive function for Gigabit Ethernet */ +static bool ravb_rgeth_rx(struct net_device *ndev, int *quota, int q) +{ + /* Place holder */ + return true; +} + +/* Packet receive function for Ethernet AVB */ static bool ravb_rcar_rx(struct net_device *ndev, int *quota, int q) { struct ravb_private *priv = netdev_priv(ndev); @@ -1918,6 +1977,13 @@ static void ravb_set_rx_csum(struct net_device *ndev, bool enable) spin_unlock_irqrestore(&priv->lock, flags); } +static int ravb_set_features_rgeth(struct net_device *ndev, + netdev_features_t features) +{ + /* Place holder */ + return 0; +} + static int ravb_set_features_rcar(struct net_device *ndev, netdev_features_t features) { @@ -2007,7 +2073,7 @@ static const struct ravb_hw_info ravb_gen3_hw_info = { .receive = ravb_rcar_rx, .set_rate = ravb_set_rate, .set_feature = ravb_set_features_rcar, - .dmac_init = ravb_rcar_dmac_init, + .dmac_init = ravb_dmac_init_rcar, .emac_init = ravb_rcar_emac_init, .gstrings_stats = ravb_gstrings_stats, .gstrings_size = sizeof(ravb_gstrings_stats), @@ -2028,7 +2094,7 @@ static const struct ravb_hw_info ravb_gen2_hw_info = { .receive = ravb_rcar_rx, .set_rate = ravb_set_rate, .set_feature = ravb_set_features_rcar, - .dmac_init = ravb_rcar_dmac_init, + .dmac_init = ravb_dmac_init_rcar, .emac_init = ravb_rcar_emac_init, .gstrings_stats = ravb_gstrings_stats, .gstrings_size = sizeof(ravb_gstrings_stats), @@ -2039,12 +2105,24 @@ static const struct ravb_hw_info ravb_gen2_hw_info = { .aligned_tx = 1, }; +static const struct ravb_hw_info rgeth_hw_info = { + .rx_ring_free = ravb_rx_ring_free_rgeth, + .rx_ring_format = ravb_rx_ring_format_rgeth, + .alloc_rx_desc = ravb_rgeth_alloc_rx_desc, + .receive = ravb_rgeth_rx, + .set_rate = ravb_rgeth_set_rate, + .set_feature = ravb_set_features_rgeth, + .dmac_init = ravb_dmac_init_rgeth, + .emac_init = ravb_rgeth_emac_init, +}; + static const struct of_device_id ravb_match_table[] = { { .compatible = "renesas,etheravb-r8a7790", .data = &ravb_gen2_hw_info }, { .compatible = "renesas,etheravb-r8a7794", .data = &ravb_gen2_hw_info }, { .compatible = "renesas,etheravb-rcar-gen2", .data = &ravb_gen2_hw_info }, { .compatible = "renesas,etheravb-r8a7795", .data = &ravb_gen3_hw_info }, { .compatible = "renesas,etheravb-rcar-gen3", .data = &ravb_gen3_hw_info }, + { .compatible = "renesas,rzg2l-gbeth", .data = &rgeth_hw_info }, { } }; MODULE_DEVICE_TABLE(of, ravb_match_table);