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45 lines
1.6 KiB
Diff
45 lines
1.6 KiB
Diff
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From: Chad Monroe <chad@monroe.io>
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Date: Mon, 16 Sep 2024 19:29:03 -0700
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Subject: [PATCH] net: ethernet: mediatek: increase QDMA RESV_BUF size
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Increase QDMA RESV_BUF from 2K to 3K for netsys v2 to match Mediatek SDK[1].
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This helps reduce the possibility of Ethernet transmit timeouts.
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[1]: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-feeds/+/19d8456c3051e5f6dabf42fa770916a2126ea4bf
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Signed-off-by: Chad Monroe <chad@monroe.io>
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---
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drivers/net/ethernet/mediatek/mtk_eth_soc.c | 6 ++++--
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drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 +
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2 files changed, 5 insertions(+), 2 deletions(-)
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--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
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+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
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@@ -271,6 +271,7 @@
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#define MTK_WCOMP_EN BIT(24)
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#define MTK_RESV_BUF (0x80 << 16)
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#define MTK_MUTLI_CNT (0x4 << 12)
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+#define MTK_RESV_BUF_MASK (0xff << 16)
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#define MTK_LEAKY_BUCKET_EN BIT(11)
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/* QDMA Flow Control Register */
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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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@@ -3309,12 +3309,14 @@ static int mtk_start_dma(struct mtk_eth
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MTK_TX_BT_32DWORDS | MTK_NDP_CO_PRO |
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MTK_RX_2B_OFFSET | MTK_TX_WB_DDONE;
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- if (mtk_is_netsys_v2_or_greater(eth))
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+ if (mtk_is_netsys_v2_or_greater(eth)) {
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+ val &= ~MTK_RESV_BUF_MASK;
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val |= MTK_MUTLI_CNT | MTK_RESV_BUF |
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MTK_WCOMP_EN | MTK_DMAD_WR_WDONE |
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MTK_CHK_DDONE_EN | MTK_LEAKY_BUCKET_EN;
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- else
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+ } else {
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val |= MTK_RX_BT_32DWORDS;
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+ }
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mtk_w32(eth, val, reg_map->qdma.glo_cfg);
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mtk_w32(eth,
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