From patchwork Fri Dec 2 00:41:40 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Iyappan Subramanian X-Patchwork-Id: 701763 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3tVFgw0Kjbz9vFb for ; Fri, 2 Dec 2016 11:41:00 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=apm.com header.i=@apm.com header.b="UJzivfxL"; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757780AbcLBAkp (ORCPT ); Thu, 1 Dec 2016 19:40:45 -0500 Received: from mail-pg0-f41.google.com ([74.125.83.41]:34532 "EHLO mail-pg0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755569AbcLBAkn (ORCPT ); Thu, 1 Dec 2016 19:40:43 -0500 Received: by mail-pg0-f41.google.com with SMTP id x23so100733211pgx.1 for ; Thu, 01 Dec 2016 16:40:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=apm.com; s=apm; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=WleEM6SRwMY6Eh7/3stpuFywFA5HE/fb6mVjjCTGB84=; b=UJzivfxL09YhPLdJcTKmrxNTSjZV+tOidBW+I2wChX4VCCxz0TEcvcqQ/4zfrF9Lsk jIf48+zjb2Wh9t7ItcS3lkVKZDZWix+DqUfGPpWv2ybkVwHbonKFL13To2EZUfFrfimq bE+/tuWKGHnCXCSOs4BQiyZppZDpWQJgy1x20= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=WleEM6SRwMY6Eh7/3stpuFywFA5HE/fb6mVjjCTGB84=; b=Hzq0XSWd627Xtlq++eOfggt5JpjSeg6ZbTNySUT+RrTOGZPV6/pGvaqiIHxK9+lBCk QIJt3y2MKMJGQ0hFuQ86nWcl9M0r/MI3IPn4klq0GSYmewlT7JkZJ2Qk5DaIDbddBmXu eMmvaoa5I8QfYfsGd2hJicmm7c/uMiwpCpHdPpR655dq3KRj7qSKB34o7TqY80Q8RqDX mSjw6oZxKCUsPTXVDilHzfYM2pDvktGjfOrRQcTfHOuVM8idmXHWHRx1JhOiuHf3Lt2u tOrsQkh2TRO9ueolgzwp1eupTJHeG1jm/uw0366BmIuPQ/7Xi5UDcL9F+FOaRNJ0Q6/n cJ0A== X-Gm-Message-State: AKaTC00HkqOylV2TnPBxzGVnm1uzNYFhvyZ+WKf8LUzF9/UoJt65mSnYYtmUeLLQCiuudc5X X-Received: by 10.84.143.1 with SMTP id 1mr89846186ply.86.1480639243191; Thu, 01 Dec 2016 16:40:43 -0800 (PST) Received: from isubrama-dev.amcc.com ([206.80.4.98]) by smtp.gmail.com with ESMTPSA id v193sm2681641pgb.37.2016.12.01.16.40.42 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 01 Dec 2016 16:40:42 -0800 (PST) From: Iyappan Subramanian To: davem@davemloft.net, netdev@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, patches@apm.com, Iyappan Subramanian , Quan Nguyen Subject: [PATCH net-next 4/8] drivers: net: xgene: Add change_mtu function Date: Thu, 1 Dec 2016 16:41:40 -0800 Message-Id: <1480639304-18757-5-git-send-email-isubramanian@apm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1480639304-18757-1-git-send-email-isubramanian@apm.com> References: <1480639304-18757-1-git-send-email-isubramanian@apm.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This patch implements ndo_change_mtu() callback function that enables mtu change. Signed-off-by: Iyappan Subramanian Signed-off-by: Quan Nguyen --- drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 6 ++++++ drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 20 ++++++++++++++++++++ drivers/net/ethernet/apm/xgene/xgene_enet_main.h | 1 + drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c | 6 ++++++ drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c | 7 +++++++ 5 files changed, 40 insertions(+) diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c index fc9010f..92cc7e5 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c @@ -504,6 +504,11 @@ static void xgene_gmac_set_speed(struct xgene_enet_pdata *pdata) xgene_enet_wr_mcx_csr(pdata, ICM_CONFIG2_REG_0_ADDR, icm2); } +static void xgene_enet_set_frame_size(struct xgene_enet_pdata *pdata, int size) +{ + xgene_enet_wr_mcx_mac(pdata, MAX_FRAME_LEN_ADDR, size); +} + static void xgene_gmac_init(struct xgene_enet_pdata *pdata) { u32 value; @@ -903,6 +908,7 @@ void xgene_enet_mdio_remove(struct xgene_enet_pdata *pdata) .tx_disable = xgene_gmac_tx_disable, .set_speed = xgene_gmac_set_speed, .set_mac_addr = xgene_gmac_set_mac_addr, + .set_framesize = xgene_enet_set_frame_size, }; const struct xgene_port_ops xgene_gport_ops = { diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index 698df27..6c7eea8 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -1500,12 +1500,31 @@ static int xgene_enet_set_mac_address(struct net_device *ndev, void *addr) return ret; } +static int xgene_change_mtu(struct net_device *ndev, int new_mtu) +{ + struct xgene_enet_pdata *pdata = netdev_priv(ndev); + int frame_size; + + if (!netif_running(ndev)) + return 0; + + frame_size = (new_mtu > ETH_DATA_LEN) ? (new_mtu + 18) : 0x600; + + xgene_enet_close(ndev); + ndev->mtu = new_mtu; + pdata->mac_ops->set_framesize(pdata, frame_size); + xgene_enet_open(ndev); + + return 0; +} + static const struct net_device_ops xgene_ndev_ops = { .ndo_open = xgene_enet_open, .ndo_stop = xgene_enet_close, .ndo_start_xmit = xgene_enet_start_xmit, .ndo_tx_timeout = xgene_enet_timeout, .ndo_get_stats64 = xgene_enet_get_stats64, + .ndo_change_mtu = xgene_change_mtu, .ndo_set_mac_address = xgene_enet_set_mac_address, }; @@ -1832,6 +1851,7 @@ static int xgene_enet_init_hw(struct xgene_enet_pdata *pdata) buf_pool->id, ring_id); } + ndev->max_mtu = XGENE_ENET_MAX_MTU; pdata->phy_speed = SPEED_UNKNOWN; pdata->mac_ops->init(pdata); diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h index 023ed76..61aa987 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h @@ -156,6 +156,7 @@ struct xgene_mac_ops { void (*rx_disable)(struct xgene_enet_pdata *pdata); void (*set_speed)(struct xgene_enet_pdata *pdata); void (*set_mac_addr)(struct xgene_enet_pdata *pdata); + void (*set_framesize)(struct xgene_enet_pdata *pdata, int framesize); void (*set_mss)(struct xgene_enet_pdata *pdata, u16 mss, u8 index); void (*link_state)(struct work_struct *work); }; diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c index a10ab64..6283f2b 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_sgmac.c @@ -343,6 +343,11 @@ static void xgene_sgmac_set_speed(struct xgene_enet_pdata *p) xgene_enet_wr_mcx_csr(p, icm2_addr, icm2); } +static void xgene_sgmac_set_frame_size(struct xgene_enet_pdata *pdata, int size) +{ + xgene_enet_wr_mac(pdata, MAX_FRAME_LEN_ADDR, size); +} + static void xgene_sgmii_enable_autoneg(struct xgene_enet_pdata *p) { u32 data, loop = 10; @@ -595,6 +600,7 @@ static void xgene_enet_link_state(struct work_struct *work) .tx_disable = xgene_sgmac_tx_disable, .set_speed = xgene_sgmac_set_speed, .set_mac_addr = xgene_sgmac_set_mac_addr, + .set_framesize = xgene_sgmac_set_frame_size, .link_state = xgene_enet_link_state }; diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c index 4109776..2a9761b 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_xgmac.c @@ -250,6 +250,12 @@ static void xgene_xgmac_set_mss(struct xgene_enet_pdata *pdata, xgene_enet_wr_csr(pdata, XG_TSIF_MSS_REG0_ADDR + offset, data); } +static void xgene_xgmac_set_frame_size(struct xgene_enet_pdata *pdata, int size) +{ + xgene_enet_wr_mac(pdata, HSTMAXFRAME_LENGTH_ADDR, + ((((size + 2) >> 2) << 16) | size)); +} + static u32 xgene_enet_link_status(struct xgene_enet_pdata *pdata) { u32 data; @@ -474,6 +480,7 @@ static void xgene_enet_link_state(struct work_struct *work) .rx_disable = xgene_xgmac_rx_disable, .tx_disable = xgene_xgmac_tx_disable, .set_mac_addr = xgene_xgmac_set_mac_addr, + .set_framesize = xgene_xgmac_set_frame_size, .set_mss = xgene_xgmac_set_mss, .link_state = xgene_enet_link_state };