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[209.132.180.67]) by mx.google.com with ESMTP id zt8si12474739pbc.135.2014.03.18.22.33.39; Tue, 18 Mar 2014 22:33:39 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-samsung-soc-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752670AbaCSFdh (ORCPT + 8 others); Wed, 19 Mar 2014 01:33:37 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:55673 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752830AbaCSFdB (ORCPT ); Wed, 19 Mar 2014 01:33:01 -0400 Received: from epcpsbgr1.samsung.com (u141.gpu120.samsung.co.kr [203.254.230.141]) by mailout4.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0N2O00AGF4R0IC90@mailout4.samsung.com>; Wed, 19 Mar 2014 14:33:00 +0900 (KST) Received: from epcpsbgm2.samsung.com ( [203.254.230.48]) by epcpsbgr1.samsung.com (EPCPMTA) with SMTP id 7E.F3.12635.C0C29235; Wed, 19 Mar 2014 14:33:00 +0900 (KST) X-AuditID: cbfee68d-b7fcd6d00000315b-81-53292c0c80f6 Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm2.samsung.com (EPCPMTA) with SMTP id 87.2E.28157.C0C29235; Wed, 19 Mar 2014 14:33:00 +0900 (KST) Received: from VISITOR1LAB ([105.128.19.10]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0N2O00EQR4QBA710@mmp1.samsung.com>; Wed, 19 Mar 2014 14:33:00 +0900 (KST) From: Byungho An To: 'netdev' , linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org Cc: 'David Miller' , "'ks.giri'" , "'siva.kallam'" , "'vipul.pandya'" , "'ilho215.lee'" Subject: [PATCH V6 3/8] net: sxgbe: add TSO support for Samsung sxgbe Date: Tue, 18 Mar 2014 22:32:40 -0700 Message-id: <006701cf4334$af6d9af0$0e48d0d0$@samsung.com> MIME-version: 1.0 X-Mailer: Microsoft Outlook 14.0 Thread-index: Ac9DM8dWL4N/RkEjTeqVMl+QqhM/zA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrGIsWRmVeSWpSXmKPExsVy+t8zA10eHc1ggzuNFhZzzrewWMw/co7V 4ui/hYwW84/uYLKYcX4fk8WxBWIWK5q2MlpsW3CB2YHDY8vKm0wefVtWMXp83iQXwBzFZZOS mpNZllqkb5fAlbFg8XfWgoVuFctafzE3MJ606mLk5JAQMJFY8/0nE4QtJnHh3nq2LkYuDiGB ZYwSrU9mMcEUvXp9gwkisYhR4uCTNVBVfxglnq79wQxSxSagJtE88zIbiC0ikCax+9IeZpAi ZoErjBIrT08AKxIWcJXYsOQJmM0ioCox79YWsBW8ApYSr283MULYghI/Jt9jAbGZBbQk1u88 zgRhy0tsXvOWGeIkBYkdZ18zQizTk1i5+AozRI24xKQHD9lBFksInGKX+L5mFxvEMgGJb5MP AQ3lAErISmw6ADVHUuLgihssExjFZiFZPQvJ6llIVs9CsmIBI8sqRtHUguSC4qT0IkO94sTc 4tK8dL3k/NxNjJA47N3BePuA9SHGZKD1E5mlRJPzgXGcVxJvaGxmZGFqYmpsZG5pRpqwkjhv 0sOkICGB9MSS1OzU1ILUovii0pzU4kOMTBycUg2Mc5hkGkpnfOjlPxkccEloxTOhuvn7rK7p m3zl6FhnWr6i7NyxJv2tC5WOqf45kTDLQdng0tIDjXp+LF9+B/DkXGJYMr/wOoPuaheFjh8l HIvmfvMRk/FNv/LB+NqVuTevv8w+ff7nubdBOZe0yg+flFO4m/Nrq2VCGvubBK//ll666R29 PnVcSizFGYmGWsxFxYkAUmKXBdkCAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrMKsWRmVeSWpSXmKPExsVy+t9jAV0eHc1gg3PnjCzmnG9hsZh/5Byr xdF/Cxkt5h/dwWQx4/w+JotjC8QsVjRtZbTYtuACswOHx5aVN5k8+rasYvT4vEkugDmqgdEm IzUxJbVIITUvOT8lMy/dVsk7ON453tTMwFDX0NLCXEkhLzE31VbJxSdA1y0zB+gCJYWyxJxS oFBAYnGxkr4dpgmhIW66FjCNEbq+IUFwPUYGaCBhHWPGgsXfWQsWulUsa/3F3MB40qqLkZND QsBE4tXrG0wQtpjEhXvr2boYuTiEBBYxShx8sgbK+cMo8XTtD2aQKjYBNYnmmZfZQGwRgTSJ 3Zf2MIMUMQtcYZRYeXoCWJGwgKvEhiVPwGwWAVWJebe2gK3gFbCUeH27iRHCFpT4MfkeC4jN LKAlsX7ncSYIW15i85q3zBAnKUjsOPuaEWKZnsTKxVeYIWrEJSY9eMg+gVFgFpJRs5CMmoVk 1CwkLQsYWVYxiqYWJBcUJ6XnGukVJ+YWl+al6yXn525iBEf5M+kdjKsaLA4xCnAwKvHwHojS CBZiTSwrrsw9xCjBwawkwit8FyjEm5JYWZValB9fVJqTWnyIMRno04nMUqLJ+cAElFcSb2hs YmZkaWRmYWRibk6asJI478FW60AhgfTEktTs1NSC1CKYLUwcnFINjNNbT6dtUOZe/tzX8Jzj nlbFHseXWxS9ZvJ2Nm/eYFJYs31SwAVL92r5x92zfZvvLStb9bjcYEvo0T03/vyUVVp7wlRI ZOqOXayWL1hkeab1/dE/u2dv9YOIR9/2TZb4u7K7K2S3oX+h0vLwsBMLmiOeF2lP1DfpebFp TpjVw6/N3V81vpcwcymxFGckGmoxFxUnAgBgsNyTNgMAAA== DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: bh74.an@samsung.com X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.220.172 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit Content-language: en-us From: Vipul Pandya Enable TSO during initialization for each DMA channels Signed-off-by: Vipul Pandya Neatening-by: Joe Perches Signed-off-by: Byungho An --- drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h | 17 +++-- drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c | 10 +++ drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h | 2 + drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c | 75 ++++++++++++++++++++--- 4 files changed, 91 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h b/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h index 41844d4..547edf3 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_desc.h @@ -167,8 +167,9 @@ struct sxgbe_desc_ops { void (*init_tx_desc)(struct sxgbe_tx_norm_desc *p); /* Invoked by the xmit function to prepare the tx descriptor */ - void (*tx_enable_tse)(struct sxgbe_tx_norm_desc *p, u8 is_tse, - u32 hdr_len, u32 payload_len); + void (*tx_desc_enable_tse)(struct sxgbe_tx_norm_desc *p, u8 is_tse, + u32 total_hdr_len, u32 tcp_hdr_len, + u32 tcp_payload_len); /* Assign buffer lengths for descriptor */ void (*prepare_tx_desc)(struct sxgbe_tx_norm_desc *p, u8 is_fd, @@ -207,20 +208,26 @@ struct sxgbe_desc_ops { int (*get_tx_timestamp_status)(struct sxgbe_tx_norm_desc *p); /* TX Context Descripto Specific */ - void (*init_tx_ctxt_desc)(struct sxgbe_tx_ctxt_desc *p); + void (*tx_ctxt_desc_set_ctxt)(struct sxgbe_tx_ctxt_desc *p); /* Set the owner of the TX context descriptor */ - void (*set_tx_ctxt_owner)(struct sxgbe_tx_ctxt_desc *p); + void (*tx_ctxt_desc_set_owner)(struct sxgbe_tx_ctxt_desc *p); /* Get the owner of the TX context descriptor */ int (*get_tx_ctxt_owner)(struct sxgbe_tx_ctxt_desc *p); /* Set TX mss */ - void (*tx_ctxt_desc_setmss)(struct sxgbe_tx_ctxt_desc *p, int mss); + void (*tx_ctxt_desc_set_mss)(struct sxgbe_tx_ctxt_desc *p, u16 mss); /* Set TX mss */ int (*tx_ctxt_desc_get_mss)(struct sxgbe_tx_ctxt_desc *p); + /* Set TX tcmssv */ + void (*tx_ctxt_desc_set_tcmssv)(struct sxgbe_tx_ctxt_desc *p); + + /* Reset TX ostc */ + void (*tx_ctxt_desc_reset_ostc)(struct sxgbe_tx_ctxt_desc *p); + /* Set IVLAN information */ void (*tx_ctxt_desc_set_ivlantag)(struct sxgbe_tx_ctxt_desc *p, int is_ivlanvalid, int ivlan_tag, diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c index 1e68ef3..1edc451 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.c @@ -354,6 +354,15 @@ static void sxgbe_dma_rx_watchdog(void __iomem *ioaddr, u32 riwt) } } +static void sxgbe_enable_tso(void __iomem *ioaddr, u8 chan_num) +{ + u32 ctrl; + + ctrl = readl(ioaddr + SXGBE_DMA_CHA_TXCTL_REG(chan_num)); + ctrl |= SXGBE_DMA_CHA_TXCTL_TSE_ENABLE; + writel(ctrl, ioaddr + SXGBE_DMA_CHA_TXCTL_REG(chan_num)); +} + static const struct sxgbe_dma_ops sxgbe_dma_ops = { .init = sxgbe_dma_init, .cha_init = sxgbe_dma_channel_init, @@ -369,6 +378,7 @@ static const struct sxgbe_dma_ops sxgbe_dma_ops = { .tx_dma_int_status = sxgbe_tx_dma_int_status, .rx_dma_int_status = sxgbe_rx_dma_int_status, .rx_watchdog = sxgbe_dma_rx_watchdog, + .enable_tso = sxgbe_enable_tso, }; const struct sxgbe_dma_ops *sxgbe_get_dma_ops(void) diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h index 50c8054..6c070ac 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_dma.h @@ -42,6 +42,8 @@ struct sxgbe_dma_ops { struct sxgbe_extra_stats *x); /* Program the HW RX Watchdog */ void (*rx_watchdog)(void __iomem *ioaddr, u32 riwt); + /* Enable TSO for each DMA channel */ + void (*enable_tso)(void __iomem *ioaddr, u8 chan_num); }; const struct sxgbe_dma_ops *sxgbe_get_dma_ops(void); diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c index 1714fd7..84475fa 100644 --- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c +++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c @@ -1099,6 +1099,28 @@ static int sxgbe_release(struct net_device *dev) return 0; } +/* Prepare first Tx descriptor for doing TSO operation */ +void sxgbe_tso_prepare(struct sxgbe_priv_data *priv, + struct sxgbe_tx_norm_desc *first_desc, + struct sk_buff *skb) +{ + unsigned int total_hdr_len, tcp_hdr_len; + + /* Write first Tx descriptor with appropriate value */ + tcp_hdr_len = tcp_hdrlen(skb); + total_hdr_len = skb_transport_offset(skb) + tcp_hdr_len; + + first_desc->tdes01 = dma_map_single(priv->device, skb->data, + total_hdr_len, DMA_TO_DEVICE); + if (dma_mapping_error(priv->device, first_desc->tdes01)) + pr_err("%s: TX dma mapping failed!!\n", __func__); + + first_desc->tdes23.tx_rd_des23.first_desc = 1; + priv->hw->desc->tx_desc_enable_tse(first_desc, 1, total_hdr_len, + tcp_hdr_len, + skb->len - total_hdr_len); +} + /** * sxgbe_xmit: Tx entry point of the driver * @skb : the socket buffer @@ -1116,13 +1138,22 @@ static netdev_tx_t sxgbe_xmit(struct sk_buff *skb, struct net_device *dev) unsigned int tx_rsize = priv->dma_tx_size; struct sxgbe_tx_queue *tqueue = priv->txq[txq_index]; struct sxgbe_tx_norm_desc *tx_desc, *first_desc; + struct sxgbe_tx_ctxt_desc *ctxt_desc = NULL; int nr_frags = skb_shinfo(skb)->nr_frags; int no_pagedlen = skb_headlen(skb); int is_jumbo = 0; + u16 mss; + u32 ctxt_desc_req = 0; /* get the TX queue handle */ dev_txq = netdev_get_tx_queue(dev, txq_index); + if (likely(skb_is_gso(skb) || + vlan_tx_tag_present(skb) || + ((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && + tqueue->hwts_tx_en))) + ctxt_desc_req = 1; + /* get the spinlock */ spin_lock(&tqueue->tx_lock); @@ -1141,18 +1172,36 @@ static netdev_tx_t sxgbe_xmit(struct sk_buff *skb, struct net_device *dev) tx_desc = tqueue->dma_tx + entry; first_desc = tx_desc; + if (ctxt_desc_req) + ctxt_desc = (struct sxgbe_tx_ctxt_desc *)first_desc; /* save the skb address */ tqueue->tx_skbuff[entry] = skb; if (!is_jumbo) { - tx_desc->tdes01 = dma_map_single(priv->device, skb->data, - no_pagedlen, DMA_TO_DEVICE); - if (dma_mapping_error(priv->device, tx_desc->tdes01)) - pr_err("%s: TX dma mapping failed!!\n", __func__); - - priv->hw->desc->prepare_tx_desc(tx_desc, 1, no_pagedlen, - no_pagedlen); + if (likely(skb_is_gso(skb))) { + /* TSO support */ + mss = skb_shinfo(skb)->gso_size; + priv->hw->desc->tx_ctxt_desc_set_mss(ctxt_desc, mss); + priv->hw->desc->tx_ctxt_desc_set_tcmssv(ctxt_desc); + priv->hw->desc->tx_ctxt_desc_reset_ostc(ctxt_desc); + priv->hw->desc->tx_ctxt_desc_set_ctxt(ctxt_desc); + priv->hw->desc->tx_ctxt_desc_set_owner(ctxt_desc); + + entry = (++tqueue->cur_tx) % tx_rsize; + first_desc = tqueue->dma_tx + entry; + + sxgbe_tso_prepare(priv, first_desc, skb); + } else { + tx_desc->tdes01 = dma_map_single(priv->device, + skb->data, no_pagedlen, DMA_TO_DEVICE); + if (dma_mapping_error(priv->device, tx_desc->tdes01)) + netdev_err(dev, "%s: TX dma mapping failed!!\n", + __func__); + + priv->hw->desc->prepare_tx_desc(tx_desc, 1, no_pagedlen, + no_pagedlen); + } } for (frag_num = 0; frag_num < nr_frags; frag_num++) { @@ -1859,6 +1908,7 @@ struct sxgbe_priv_data *sxgbe_dvr_probe(struct device *device, int ret = 0; struct net_device *ndev = NULL; struct sxgbe_priv_data *priv; + u8 queue_num; ndev = alloc_etherdev_mqs(sizeof(struct sxgbe_priv_data), SXGBE_TX_QUEUES, SXGBE_RX_QUEUES); @@ -1893,7 +1943,9 @@ struct sxgbe_priv_data *sxgbe_dvr_probe(struct device *device, ndev->netdev_ops = &sxgbe_netdev_ops; - ndev->hw_features = NETIF_F_SG | NETIF_F_RXCSUM; + ndev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | NETIF_F_TSO | NETIF_F_TSO6 | + NETIF_F_GRO; ndev->features |= ndev->hw_features | NETIF_F_HIGHDMA; ndev->watchdog_timeo = msecs_to_jiffies(TX_TIMEO); @@ -1905,6 +1957,13 @@ struct sxgbe_priv_data *sxgbe_dvr_probe(struct device *device, if (flow_ctrl) priv->flow_ctrl = SXGBE_FLOW_AUTO; /* RX/TX pause on */ + /* Enable TCP segmentation offload for all DMA channels */ + if (priv->hw_cap.tcpseg_offload) { + SXGBE_FOR_EACH_QUEUE(SXGBE_TX_QUEUES, queue_num) { + priv->hw->dma->enable_tso(priv->ioaddr, queue_num); + } + } + /* Rx Watchdog is available, enable depend on platform data */ if (!priv->plat->riwt_off) { priv->use_riwt = 1;