From patchwork Wed Sep 16 07:40:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wong, Vee Khee" X-Patchwork-Id: 260792 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 E6F7BC43461 for ; Wed, 16 Sep 2020 07:41:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88FC22078D for ; Wed, 16 Sep 2020 07:41:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726480AbgIPHlk (ORCPT ); Wed, 16 Sep 2020 03:41:40 -0400 Received: from mga06.intel.com ([134.134.136.31]:22286 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726068AbgIPHli (ORCPT ); Wed, 16 Sep 2020 03:41:38 -0400 IronPort-SDR: 3JmNJ9wVVZzfHijVgY3ryvMLN0X9uiO8NV8QmE/Hmp3pFmtuUFhrjc1YoFk2dJd0GRdBFwzGpe UL8+TG9fRHlw== X-IronPort-AV: E=McAfee;i="6000,8403,9745"; a="220974928" X-IronPort-AV: E=Sophos;i="5.76,432,1592895600"; d="scan'208";a="220974928" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2020 00:38:35 -0700 IronPort-SDR: sBLZ0kZia7WSDi303h9IxHf1flKKuLD21QnAjL2/EerHDasVk7r6sMFVB+QytzlxGCFfFMBqOP XaiKmQUl+1lg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,432,1592895600"; d="scan'208";a="302471420" Received: from glass.png.intel.com ([172.30.181.92]) by orsmga003.jf.intel.com with ESMTP; 16 Sep 2020 00:38:30 -0700 From: Wong Vee Khee To: Giuseppe Cavallaro , Alexandre Torgue , Jose Abreu , "David S . Miller" , Jakub Kicinski , Maxime Coquelin , Russell King Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Ong Boon Leong , Voon Wei Feng , Song Yoong Siang , Wong Vee Khee , Vijaya Balan Sadhishkhanna , Seow Chen Yong Subject: [PATCH net-next] net: stmmac: Add support to Ethtool get/set ring parameters Date: Wed, 16 Sep 2020 15:40:20 +0800 Message-Id: <20200916074020.25491-1-vee.khee.wong@intel.com> X-Mailer: git-send-email 2.17.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: "Song, Yoong Siang" This patch add support to --show-ring & --set-ring Ethtool functions: - Adding min, max, power of two check to new ring parameter's value. - Bring down the network interface before changing the value of ring parameters. - Bring up the network interface after changing the value of ring parameters. Signed-off-by: Song, Yoong Siang Signed-off-by: Voon Weifeng Signed-off-by: Ong Boon Leong --- .../net/ethernet/stmicro/stmmac/chain_mode.c | 7 +- drivers/net/ethernet/stmicro/stmmac/common.h | 13 +- .../net/ethernet/stmicro/stmmac/ring_mode.c | 2 +- drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 + .../ethernet/stmicro/stmmac/stmmac_ethtool.c | 29 ++++ .../net/ethernet/stmicro/stmmac/stmmac_main.c | 135 +++++++++++------- .../stmicro/stmmac/stmmac_selftests.c | 2 +- 7 files changed, 132 insertions(+), 59 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/chain_mode.c b/drivers/net/ethernet/stmicro/stmmac/chain_mode.c index 52971f5293aa..d2cdc02d9f94 100644 --- a/drivers/net/ethernet/stmicro/stmmac/chain_mode.c +++ b/drivers/net/ethernet/stmicro/stmmac/chain_mode.c @@ -46,7 +46,7 @@ static int jumbo_frm(void *p, struct sk_buff *skb, int csum) while (len != 0) { tx_q->tx_skbuff[entry] = NULL; - entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE); + entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size); desc = tx_q->dma_tx + entry; if (len > bmax) { @@ -137,7 +137,7 @@ static void refill_desc3(void *priv_ptr, struct dma_desc *p) */ p->des3 = cpu_to_le32((unsigned int)(rx_q->dma_rx_phy + (((rx_q->dirty_rx) + 1) % - DMA_RX_SIZE) * + priv->dma_rx_size) * sizeof(struct dma_desc))); } @@ -154,7 +154,8 @@ static void clean_desc3(void *priv_ptr, struct dma_desc *p) * to keep explicit chaining in the descriptor. */ p->des3 = cpu_to_le32((unsigned int)((tx_q->dma_tx_phy + - ((tx_q->dirty_tx + 1) % DMA_TX_SIZE)) + ((tx_q->dirty_tx + 1) % + priv->dma_tx_size)) * sizeof(struct dma_desc))); } diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h index acc5e3fc1c2f..cafa8e3c3573 100644 --- a/drivers/net/ethernet/stmicro/stmmac/common.h +++ b/drivers/net/ethernet/stmicro/stmmac/common.h @@ -42,9 +42,16 @@ #define STMMAC_CHAN0 0 /* Always supported and default for all chips */ -/* These need to be power of two, and >= 4 */ -#define DMA_TX_SIZE 512 -#define DMA_RX_SIZE 512 +/* TX and RX Descriptor Length, these need to be power of two. + * TX descriptor length less than 64 may cause transmit queue timed out error. + * RX descriptor length less than 64 may cause inconsistent Rx chain error. + */ +#define DMA_MIN_TX_SIZE 64 +#define DMA_MAX_TX_SIZE 1024 +#define DMA_DEFAULT_TX_SIZE 512 +#define DMA_MIN_RX_SIZE 64 +#define DMA_MAX_RX_SIZE 1024 +#define DMA_DEFAULT_RX_SIZE 512 #define STMMAC_GET_ENTRY(x, size) ((x + 1) & (size - 1)) #undef FRAME_FILTER_DEBUG diff --git a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c index 14bd5e7b9875..8ad900949dc8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/ring_mode.c +++ b/drivers/net/ethernet/stmicro/stmmac/ring_mode.c @@ -51,7 +51,7 @@ static int jumbo_frm(void *p, struct sk_buff *skb, int csum) stmmac_prepare_tx_desc(priv, desc, 1, bmax, csum, STMMAC_RING_MODE, 0, false, skb->len); tx_q->tx_skbuff[entry] = NULL; - entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE); + entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size); if (priv->extend_desc) desc = (struct dma_desc *)(tx_q->dma_etx + entry); diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h index 509ce067538e..014a816c9d0b 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h @@ -171,9 +171,11 @@ struct stmmac_priv { /* RX Queue */ struct stmmac_rx_queue rx_queue[MTL_MAX_RX_QUEUES]; + unsigned int dma_rx_size; /* TX Queue */ struct stmmac_tx_queue tx_queue[MTL_MAX_TX_QUEUES]; + unsigned int dma_tx_size; /* Generic channel for NAPI */ struct stmmac_channel channel[STMMAC_CH_MAX]; @@ -265,6 +267,7 @@ int stmmac_dvr_probe(struct device *device, void stmmac_disable_eee_mode(struct stmmac_priv *priv); bool stmmac_eee_init(struct stmmac_priv *priv); int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt); +int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size); #if IS_ENABLED(CONFIG_STMMAC_SELFTESTS) void stmmac_selftest_run(struct net_device *dev, diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c index db681287c273..5cfc942dbabf 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c @@ -440,6 +440,33 @@ static int stmmac_nway_reset(struct net_device *dev) return phylink_ethtool_nway_reset(priv->phylink); } +static void stmmac_get_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + struct stmmac_priv *priv = netdev_priv(netdev); + + ring->rx_max_pending = DMA_MAX_RX_SIZE; + ring->tx_max_pending = DMA_MAX_TX_SIZE; + ring->rx_pending = priv->dma_rx_size; + ring->tx_pending = priv->dma_tx_size; +} + +static int stmmac_set_ringparam(struct net_device *netdev, + struct ethtool_ringparam *ring) +{ + if (ring->rx_mini_pending || ring->rx_jumbo_pending || + ring->rx_pending < DMA_MIN_RX_SIZE || + ring->rx_pending > DMA_MAX_RX_SIZE || + !is_power_of_2(ring->rx_pending) || + ring->tx_pending < DMA_MIN_TX_SIZE || + ring->tx_pending > DMA_MAX_TX_SIZE || + !is_power_of_2(ring->tx_pending)) + return -EINVAL; + + return stmmac_reinit_ringparam(netdev, ring->rx_pending, + ring->tx_pending); +} + static void stmmac_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause) @@ -947,6 +974,8 @@ static const struct ethtool_ops stmmac_ethtool_ops = { .get_regs_len = stmmac_ethtool_get_regs_len, .get_link = ethtool_op_get_link, .nway_reset = stmmac_nway_reset, + .get_ringparam = stmmac_get_ringparam, + .set_ringparam = stmmac_set_ringparam, .get_pauseparam = stmmac_get_pauseparam, .set_pauseparam = stmmac_set_pauseparam, .self_test = stmmac_selftest_run, diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index e2c579cf3b15..df2c74bbfcff 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -63,8 +63,8 @@ static int phyaddr = -1; module_param(phyaddr, int, 0444); MODULE_PARM_DESC(phyaddr, "Physical device address"); -#define STMMAC_TX_THRESH (DMA_TX_SIZE / 4) -#define STMMAC_RX_THRESH (DMA_RX_SIZE / 4) +#define STMMAC_TX_THRESH(x) ((x)->dma_tx_size / 4) +#define STMMAC_RX_THRESH(x) ((x)->dma_rx_size / 4) static int flow_ctrl = FLOW_AUTO; module_param(flow_ctrl, int, 0644); @@ -271,7 +271,7 @@ static inline u32 stmmac_tx_avail(struct stmmac_priv *priv, u32 queue) if (tx_q->dirty_tx > tx_q->cur_tx) avail = tx_q->dirty_tx - tx_q->cur_tx - 1; else - avail = DMA_TX_SIZE - tx_q->cur_tx + tx_q->dirty_tx - 1; + avail = priv->dma_tx_size - tx_q->cur_tx + tx_q->dirty_tx - 1; return avail; } @@ -289,7 +289,7 @@ static inline u32 stmmac_rx_dirty(struct stmmac_priv *priv, u32 queue) if (rx_q->dirty_rx <= rx_q->cur_rx) dirty = rx_q->cur_rx - rx_q->dirty_rx; else - dirty = DMA_RX_SIZE - rx_q->dirty_rx + rx_q->cur_rx; + dirty = priv->dma_rx_size - rx_q->dirty_rx + rx_q->cur_rx; return dirty; } @@ -1120,7 +1120,7 @@ static void stmmac_display_rx_rings(struct stmmac_priv *priv) head_rx = (void *)rx_q->dma_rx; /* Display RX ring */ - stmmac_display_ring(priv, head_rx, DMA_RX_SIZE, true); + stmmac_display_ring(priv, head_rx, priv->dma_rx_size, true); } } @@ -1143,7 +1143,7 @@ static void stmmac_display_tx_rings(struct stmmac_priv *priv) else head_tx = (void *)tx_q->dma_tx; - stmmac_display_ring(priv, head_tx, DMA_TX_SIZE, false); + stmmac_display_ring(priv, head_tx, priv->dma_tx_size, false); } } @@ -1187,16 +1187,16 @@ static void stmmac_clear_rx_descriptors(struct stmmac_priv *priv, u32 queue) int i; /* Clear the RX descriptors */ - for (i = 0; i < DMA_RX_SIZE; i++) + for (i = 0; i < priv->dma_rx_size; i++) if (priv->extend_desc) stmmac_init_rx_desc(priv, &rx_q->dma_erx[i].basic, priv->use_riwt, priv->mode, - (i == DMA_RX_SIZE - 1), + (i == priv->dma_rx_size - 1), priv->dma_buf_sz); else stmmac_init_rx_desc(priv, &rx_q->dma_rx[i], priv->use_riwt, priv->mode, - (i == DMA_RX_SIZE - 1), + (i == priv->dma_rx_size - 1), priv->dma_buf_sz); } @@ -1213,8 +1213,8 @@ static void stmmac_clear_tx_descriptors(struct stmmac_priv *priv, u32 queue) int i; /* Clear the TX descriptors */ - for (i = 0; i < DMA_TX_SIZE; i++) { - int last = (i == (DMA_TX_SIZE - 1)); + for (i = 0; i < priv->dma_tx_size; i++) { + int last = (i == (priv->dma_tx_size - 1)); struct dma_desc *p; if (priv->extend_desc) @@ -1368,7 +1368,7 @@ static int init_dma_rx_desc_rings(struct net_device *dev, gfp_t flags) stmmac_clear_rx_descriptors(priv, queue); - for (i = 0; i < DMA_RX_SIZE; i++) { + for (i = 0; i < priv->dma_rx_size; i++) { struct dma_desc *p; if (priv->extend_desc) @@ -1383,16 +1383,18 @@ static int init_dma_rx_desc_rings(struct net_device *dev, gfp_t flags) } rx_q->cur_rx = 0; - rx_q->dirty_rx = (unsigned int)(i - DMA_RX_SIZE); + rx_q->dirty_rx = (unsigned int)(i - priv->dma_rx_size); /* Setup the chained descriptor addresses */ if (priv->mode == STMMAC_CHAIN_MODE) { if (priv->extend_desc) stmmac_mode_init(priv, rx_q->dma_erx, - rx_q->dma_rx_phy, DMA_RX_SIZE, 1); + rx_q->dma_rx_phy, + priv->dma_rx_size, 1); else stmmac_mode_init(priv, rx_q->dma_rx, - rx_q->dma_rx_phy, DMA_RX_SIZE, 0); + rx_q->dma_rx_phy, + priv->dma_rx_size, 0); } } @@ -1406,7 +1408,7 @@ static int init_dma_rx_desc_rings(struct net_device *dev, gfp_t flags) if (queue == 0) break; - i = DMA_RX_SIZE; + i = priv->dma_rx_size; queue--; } @@ -1438,13 +1440,15 @@ static int init_dma_tx_desc_rings(struct net_device *dev) if (priv->mode == STMMAC_CHAIN_MODE) { if (priv->extend_desc) stmmac_mode_init(priv, tx_q->dma_etx, - tx_q->dma_tx_phy, DMA_TX_SIZE, 1); + tx_q->dma_tx_phy, + priv->dma_tx_size, 1); else if (!(tx_q->tbs & STMMAC_TBS_AVAIL)) stmmac_mode_init(priv, tx_q->dma_tx, - tx_q->dma_tx_phy, DMA_TX_SIZE, 0); + tx_q->dma_tx_phy, + priv->dma_tx_size, 0); } - for (i = 0; i < DMA_TX_SIZE; i++) { + for (i = 0; i < priv->dma_tx_size; i++) { struct dma_desc *p; if (priv->extend_desc) p = &((tx_q->dma_etx + i)->basic); @@ -1508,7 +1512,7 @@ static void dma_free_rx_skbufs(struct stmmac_priv *priv, u32 queue) { int i; - for (i = 0; i < DMA_RX_SIZE; i++) + for (i = 0; i < priv->dma_rx_size; i++) stmmac_free_rx_buffer(priv, queue, i); } @@ -1521,7 +1525,7 @@ static void dma_free_tx_skbufs(struct stmmac_priv *priv, u32 queue) { int i; - for (i = 0; i < DMA_TX_SIZE; i++) + for (i = 0; i < priv->dma_tx_size; i++) stmmac_free_tx_buffer(priv, queue, i); } @@ -1543,11 +1547,11 @@ static void free_dma_rx_desc_resources(struct stmmac_priv *priv) /* Free DMA regions of consistent memory previously allocated */ if (!priv->extend_desc) - dma_free_coherent(priv->device, - DMA_RX_SIZE * sizeof(struct dma_desc), + dma_free_coherent(priv->device, priv->dma_rx_size * + sizeof(struct dma_desc), rx_q->dma_rx, rx_q->dma_rx_phy); else - dma_free_coherent(priv->device, DMA_RX_SIZE * + dma_free_coherent(priv->device, priv->dma_rx_size * sizeof(struct dma_extended_desc), rx_q->dma_erx, rx_q->dma_rx_phy); @@ -1586,7 +1590,7 @@ static void free_dma_tx_desc_resources(struct stmmac_priv *priv) addr = tx_q->dma_tx; } - size *= DMA_TX_SIZE; + size *= priv->dma_tx_size; dma_free_coherent(priv->device, size, addr, tx_q->dma_tx_phy); @@ -1619,7 +1623,7 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv) rx_q->priv_data = priv; pp_params.flags = PP_FLAG_DMA_MAP; - pp_params.pool_size = DMA_RX_SIZE; + pp_params.pool_size = priv->dma_rx_size; num_pages = DIV_ROUND_UP(priv->dma_buf_sz, PAGE_SIZE); pp_params.order = ilog2(num_pages); pp_params.nid = dev_to_node(priv->device); @@ -1633,14 +1637,16 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv) goto err_dma; } - rx_q->buf_pool = kcalloc(DMA_RX_SIZE, sizeof(*rx_q->buf_pool), + rx_q->buf_pool = kcalloc(priv->dma_rx_size, + sizeof(*rx_q->buf_pool), GFP_KERNEL); if (!rx_q->buf_pool) goto err_dma; if (priv->extend_desc) { rx_q->dma_erx = dma_alloc_coherent(priv->device, - DMA_RX_SIZE * sizeof(struct dma_extended_desc), + priv->dma_rx_size * + sizeof(struct dma_extended_desc), &rx_q->dma_rx_phy, GFP_KERNEL); if (!rx_q->dma_erx) @@ -1648,7 +1654,8 @@ static int alloc_dma_rx_desc_resources(struct stmmac_priv *priv) } else { rx_q->dma_rx = dma_alloc_coherent(priv->device, - DMA_RX_SIZE * sizeof(struct dma_desc), + priv->dma_rx_size * + sizeof(struct dma_desc), &rx_q->dma_rx_phy, GFP_KERNEL); if (!rx_q->dma_rx) @@ -1687,13 +1694,13 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv) tx_q->queue_index = queue; tx_q->priv_data = priv; - tx_q->tx_skbuff_dma = kcalloc(DMA_TX_SIZE, + tx_q->tx_skbuff_dma = kcalloc(priv->dma_tx_size, sizeof(*tx_q->tx_skbuff_dma), GFP_KERNEL); if (!tx_q->tx_skbuff_dma) goto err_dma; - tx_q->tx_skbuff = kcalloc(DMA_TX_SIZE, + tx_q->tx_skbuff = kcalloc(priv->dma_tx_size, sizeof(struct sk_buff *), GFP_KERNEL); if (!tx_q->tx_skbuff) @@ -1706,7 +1713,7 @@ static int alloc_dma_tx_desc_resources(struct stmmac_priv *priv) else size = sizeof(struct dma_desc); - size *= DMA_TX_SIZE; + size *= priv->dma_tx_size; addr = dma_alloc_coherent(priv->device, size, &tx_q->dma_tx_phy, GFP_KERNEL); @@ -2016,7 +2023,7 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue) stmmac_release_tx_desc(priv, p, priv->mode); - entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE); + entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size); } tx_q->dirty_tx = entry; @@ -2025,7 +2032,7 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue) if (unlikely(netif_tx_queue_stopped(netdev_get_tx_queue(priv->dev, queue))) && - stmmac_tx_avail(priv, queue) > STMMAC_TX_THRESH) { + stmmac_tx_avail(priv, queue) > STMMAC_TX_THRESH(priv)) { netif_dbg(priv, tx_done, priv->dev, "%s: restart transmit\n", __func__); @@ -2298,7 +2305,8 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv) rx_q->dma_rx_phy, chan); rx_q->rx_tail_addr = rx_q->dma_rx_phy + - (DMA_RX_SIZE * sizeof(struct dma_desc)); + (priv->dma_rx_size * + sizeof(struct dma_desc)); stmmac_set_rx_tail_ptr(priv, priv->ioaddr, rx_q->rx_tail_addr, chan); } @@ -2382,12 +2390,12 @@ static void stmmac_set_rings_length(struct stmmac_priv *priv) /* set TX ring length */ for (chan = 0; chan < tx_channels_count; chan++) stmmac_set_tx_ring_len(priv, priv->ioaddr, - (DMA_TX_SIZE - 1), chan); + (priv->dma_tx_size - 1), chan); /* set RX ring length */ for (chan = 0; chan < rx_channels_count; chan++) stmmac_set_rx_ring_len(priv, priv->ioaddr, - (DMA_RX_SIZE - 1), chan); + (priv->dma_rx_size - 1), chan); } /** @@ -2767,6 +2775,11 @@ static int stmmac_open(struct net_device *dev) priv->rx_copybreak = STMMAC_RX_COPYBREAK; + if (!priv->dma_tx_size) + priv->dma_tx_size = DMA_DEFAULT_TX_SIZE; + if (!priv->dma_rx_size) + priv->dma_rx_size = DMA_DEFAULT_RX_SIZE; + /* Earlier check for TBS */ for (chan = 0; chan < priv->plat->tx_queues_to_use; chan++) { struct stmmac_tx_queue *tx_q = &priv->tx_queue[chan]; @@ -2936,7 +2949,7 @@ static bool stmmac_vlan_insert(struct stmmac_priv *priv, struct sk_buff *skb, return false; stmmac_set_tx_owner(priv, p); - tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE); + tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size); return true; } @@ -2964,7 +2977,8 @@ static void stmmac_tso_allocator(struct stmmac_priv *priv, dma_addr_t des, while (tmp_len > 0) { dma_addr_t curr_addr; - tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE); + tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, + priv->dma_tx_size); WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]); if (tx_q->tbs & STMMAC_TBS_AVAIL) @@ -3071,7 +3085,8 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev) stmmac_set_mss(priv, mss_desc, mss); tx_q->mss = mss; - tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE); + tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, + priv->dma_tx_size); WARN_ON(tx_q->tx_skbuff[tx_q->cur_tx]); } @@ -3178,7 +3193,7 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev) * ndo_start_xmit will fill this descriptor the next time it's * called and stmmac_tx_clean may clean up to this descriptor. */ - tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, DMA_TX_SIZE); + tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_tx_size); if (unlikely(stmmac_tx_avail(priv, queue) <= (MAX_SKB_FRAGS + 1))) { netif_dbg(priv, hw, priv->dev, "%s: stop transmitted packets\n", @@ -3341,7 +3356,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) int len = skb_frag_size(frag); bool last_segment = (i == (nfrags - 1)); - entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE); + entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size); WARN_ON(tx_q->tx_skbuff[entry]); if (likely(priv->extend_desc)) @@ -3409,7 +3424,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev) * ndo_start_xmit will fill this descriptor the next time it's * called and stmmac_tx_clean may clean up to this descriptor. */ - entry = STMMAC_GET_ENTRY(entry, DMA_TX_SIZE); + entry = STMMAC_GET_ENTRY(entry, priv->dma_tx_size); tx_q->cur_tx = entry; if (netif_msg_pktdata(priv)) { @@ -3594,7 +3609,7 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv, u32 queue) dma_wmb(); stmmac_set_rx_owner(priv, p, use_rx_wd); - entry = STMMAC_GET_ENTRY(entry, DMA_RX_SIZE); + entry = STMMAC_GET_ENTRY(entry, priv->dma_rx_size); } rx_q->dirty_rx = entry; rx_q->rx_tail_addr = rx_q->dma_rx_phy + @@ -3677,7 +3692,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue) else rx_head = (void *)rx_q->dma_rx; - stmmac_display_ring(priv, rx_head, DMA_RX_SIZE, true); + stmmac_display_ring(priv, rx_head, priv->dma_rx_size, true); } while (count < limit) { unsigned int buf1_len = 0, buf2_len = 0; @@ -3719,7 +3734,8 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue) if (unlikely(status & dma_own)) break; - rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx, DMA_RX_SIZE); + rx_q->cur_rx = STMMAC_GET_ENTRY(rx_q->cur_rx, + priv->dma_rx_size); next_entry = rx_q->cur_rx; if (priv->extend_desc) @@ -3894,7 +3910,7 @@ static int stmmac_napi_poll_tx(struct napi_struct *napi, int budget) priv->xstats.napi_poll++; - work_done = stmmac_tx_clean(priv, DMA_TX_SIZE, chan); + work_done = stmmac_tx_clean(priv, priv->dma_tx_size, chan); work_done = min(work_done, budget); if (work_done < budget && napi_complete_done(napi, work_done)) { @@ -4287,11 +4303,11 @@ static int stmmac_rings_status_show(struct seq_file *seq, void *v) if (priv->extend_desc) { seq_printf(seq, "Extended descriptor ring:\n"); sysfs_display_ring((void *)rx_q->dma_erx, - DMA_RX_SIZE, 1, seq); + priv->dma_rx_size, 1, seq); } else { seq_printf(seq, "Descriptor ring:\n"); sysfs_display_ring((void *)rx_q->dma_rx, - DMA_RX_SIZE, 0, seq); + priv->dma_rx_size, 0, seq); } } @@ -4303,11 +4319,11 @@ static int stmmac_rings_status_show(struct seq_file *seq, void *v) if (priv->extend_desc) { seq_printf(seq, "Extended descriptor ring:\n"); sysfs_display_ring((void *)tx_q->dma_etx, - DMA_TX_SIZE, 1, seq); + priv->dma_tx_size, 1, seq); } else if (!(tx_q->tbs & STMMAC_TBS_AVAIL)) { seq_printf(seq, "Descriptor ring:\n"); sysfs_display_ring((void *)tx_q->dma_tx, - DMA_TX_SIZE, 0, seq); + priv->dma_tx_size, 0, seq); } } @@ -4778,6 +4794,23 @@ int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt) return ret; } +int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size) +{ + struct stmmac_priv *priv = netdev_priv(dev); + int ret = 0; + + if (netif_running(dev)) + stmmac_release(dev); + + priv->dma_rx_size = rx_size; + priv->dma_tx_size = tx_size; + + if (netif_running(dev)) + ret = stmmac_open(dev); + + return ret; +} + /** * stmmac_dvr_probe * @device: device pointer diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c index bf195adee393..0462dcc93e53 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c @@ -796,7 +796,7 @@ static int stmmac_test_flowctrl(struct stmmac_priv *priv) u32 tail; tail = priv->rx_queue[i].dma_rx_phy + - (DMA_RX_SIZE * sizeof(struct dma_desc)); + (priv->dma_rx_size * sizeof(struct dma_desc)); stmmac_set_rx_tail_ptr(priv, priv->ioaddr, tail, i); stmmac_start_rx(priv, priv->ioaddr, i);