Commit 1b661241 authored by Bo-Cun Chen's avatar Bo-Cun Chen Committed by Jakub Kicinski
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net: ethernet: mtk_eth_soc: revise QDMA packet scheduler settings 



The QDMA packet scheduler suffers from a performance issue.
Fix this by picking up changes from MediaTek's SDK which change to use
Token Bucket instead of Leaky Bucket and fix the SPEED_1000 configuration.

Fixes: 160d3a9b ("net: ethernet: mtk_eth_soc: introduce MTK_NETSYS_V2 support")
Signed-off-by: default avatarBo-Cun Chen <bc-bocun.chen@mediatek.com>
Signed-off-by: default avatarDaniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/18040f60f9e2f5855036b75b28c4332a2d2ebdd8.1744764277.git.daniel@makrotopia.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 6b02eb37

drivers/net/ethernet/mediatek/mtk_eth_soc.c

+3 −3
Original line number Diff line number Diff line
@@ -762,8 +762,8 @@ static void mtk_set_queue_speed(struct mtk_eth *eth, unsigned int idx, 
			break;

		case SPEED_1000:

			val |= MTK_QTX_SCH_MAX_RATE_EN |

			       FIELD_PREP(MTK_QTX_SCH_MAX_RATE_MAN, 10) |

			       FIELD_PREP(MTK_QTX_SCH_MAX_RATE_EXP, 5) |

			       FIELD_PREP(MTK_QTX_SCH_MAX_RATE_MAN, 1) |

			       FIELD_PREP(MTK_QTX_SCH_MAX_RATE_EXP, 6) |

			       FIELD_PREP(MTK_QTX_SCH_MAX_RATE_WEIGHT, 10);

			break;

		default:
@@ -3320,7 +3320,7 @@ static int mtk_start_dma(struct mtk_eth *eth) 
		if (mtk_is_netsys_v2_or_greater(eth))

			val |= MTK_MUTLI_CNT | MTK_RESV_BUF |

			       MTK_WCOMP_EN | MTK_DMAD_WR_WDONE |

			       MTK_CHK_DDONE_EN | MTK_LEAKY_BUCKET_EN;

			       MTK_CHK_DDONE_EN;

		else

			val |= MTK_RX_BT_32DWORDS;

		mtk_w32(eth, val, reg_map->qdma.glo_cfg);