91 lines
2.7 KiB
Diff
91 lines
2.7 KiB
Diff
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From f84a8ad5cc385fe414758fa4d423e26197a79c28 Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Sat, 23 Apr 2016 11:57:21 +0200
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Subject: [PATCH 79/91] net-next: fix BQL support
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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drivers/net/ethernet/mediatek/mtk_eth_soc.c | 33 +++++++++++++++------------
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1 file changed, 19 insertions(+), 14 deletions(-)
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diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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index bab5d45..ded09bc 100644
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
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@@ -625,7 +625,15 @@ static int mtk_tx_map(struct sk_buff *skb, struct net_device *dev,
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WRITE_ONCE(itxd->txd3, (TX_DMA_SWC | TX_DMA_PLEN0(skb_headlen(skb)) |
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(!nr_frags * TX_DMA_LS0)));
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- netdev_sent_queue(dev, skb->len);
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+ /* we have a single DMA ring so BQL needs to be updated for all devices
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+ * sitting on this ring
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+ */
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+ for (i = 0; i < MTK_MAC_COUNT; i++) {
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+ if (!eth->netdev[i])
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+ continue;
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+ netdev_sent_queue(dev, skb->len);
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+ }
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+
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skb_tx_timestamp(skb);
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ring->next_free = mtk_qdma_phys_to_virt(ring, txd->txd2);
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@@ -853,21 +861,18 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
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struct mtk_tx_dma *desc;
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struct sk_buff *skb;
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struct mtk_tx_buf *tx_buf;
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- int total = 0, done[MTK_MAX_DEVS];
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- unsigned int bytes[MTK_MAX_DEVS];
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+ int total = 0, done = 0;
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+ unsigned int bytes = 0;
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u32 cpu, dma;
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static int condition;
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int i;
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- memset(done, 0, sizeof(done));
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- memset(bytes, 0, sizeof(bytes));
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-
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cpu = mtk_r32(eth, MTK_QTX_CRX_PTR);
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dma = mtk_r32(eth, MTK_QTX_DRX_PTR);
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desc = mtk_qdma_phys_to_virt(ring, cpu);
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- while ((cpu != dma) && budget) {
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+ while ((cpu != dma) && done < budget) {
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u32 next_cpu = desc->txd2;
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int mac;
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@@ -887,9 +892,8 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
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}
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if (skb != (struct sk_buff *)MTK_DMA_DUMMY_DESC) {
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- bytes[mac] += skb->len;
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- done[mac]++;
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- budget--;
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+ bytes += skb->len;
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+ done++;
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}
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mtk_tx_unmap(eth->dev, tx_buf);
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@@ -902,13 +906,14 @@ static int mtk_poll_tx(struct mtk_eth *eth, int budget, bool *tx_again)
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mtk_w32(eth, cpu, MTK_QTX_CRX_PTR);
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+ /* we have a single DMA ring so BQL needs to be updated for all devices
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+ * sitting on this ring
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+ */
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for (i = 0; i < MTK_MAC_COUNT; i++) {
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- if (!eth->netdev[i] || !done[i])
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+ if (!eth->netdev[i])
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continue;
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- netdev_completed_queue(eth->netdev[i], done[i], bytes[i]);
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- total += done[i];
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+ netdev_completed_queue(eth->netdev[i], done, bytes);
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}
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-
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/* read hw index again make sure no new tx packet */
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if (cpu != dma || cpu != mtk_r32(eth, MTK_QTX_DRX_PTR))
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*tx_again = true;
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--
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1.7.10.4
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