diff options
Diffstat (limited to 'target/linux/mediatek/patches-5.15/962-net-ethernet-mediatek-use-QDMA-instead-of-ADMAv2-on-.patch')
| -rw-r--r-- | target/linux/mediatek/patches-5.15/962-net-ethernet-mediatek-use-QDMA-instead-of-ADMAv2-on-.patch | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-5.15/962-net-ethernet-mediatek-use-QDMA-instead-of-ADMAv2-on-.patch b/target/linux/mediatek/patches-5.15/962-net-ethernet-mediatek-use-QDMA-instead-of-ADMAv2-on-.patch new file mode 100644 index 0000000000..dd191f7afd --- /dev/null +++ b/target/linux/mediatek/patches-5.15/962-net-ethernet-mediatek-use-QDMA-instead-of-ADMAv2-on-.patch @@ -0,0 +1,123 @@ +From: Daniel Golle <daniel@makrotopia.org> +Date: Tue, 10 Oct 2023 21:06:43 +0200 +Subject: [PATCH net-next 2/2] net: ethernet: mediatek: use QDMA instead of + ADMAv2 on MT7981 and MT7986 + +ADMA is plagued by RX hangs which can't easily detected and happen upon +receival of a corrupted package. +Use QDMA just like on netsys v1 which is also still present and usable, and +doesn't suffer from that problem. + +Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org> +Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> +Signed-off-by: Daniel Golle <daniel@makrotopia.org> +--- + drivers/net/ethernet/mediatek/mtk_eth_soc.c | 46 ++++++++++----------- + 1 file changed, 23 insertions(+), 23 deletions(-) + +--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c ++++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c +@@ -108,16 +108,16 @@ static const struct mtk_reg_map mt7986_r + .tx_irq_mask = 0x461c, + .tx_irq_status = 0x4618, + .pdma = { +- .rx_ptr = 0x6100, +- .rx_cnt_cfg = 0x6104, +- .pcrx_ptr = 0x6108, +- .glo_cfg = 0x6204, +- .rst_idx = 0x6208, +- .delay_irq = 0x620c, +- .irq_status = 0x6220, +- .irq_mask = 0x6228, +- .adma_rx_dbg0 = 0x6238, +- .int_grp = 0x6250, ++ .rx_ptr = 0x4100, ++ .rx_cnt_cfg = 0x4104, ++ .pcrx_ptr = 0x4108, ++ .glo_cfg = 0x4204, ++ .rst_idx = 0x4208, ++ .delay_irq = 0x420c, ++ .irq_status = 0x4220, ++ .irq_mask = 0x4228, ++ .adma_rx_dbg0 = 0x4238, ++ .int_grp = 0x4250, + }, + .qdma = { + .qtx_cfg = 0x4400, +@@ -1207,7 +1207,7 @@ static bool mtk_rx_get_desc(struct mtk_e + rxd->rxd1 = READ_ONCE(dma_rxd->rxd1); + rxd->rxd3 = READ_ONCE(dma_rxd->rxd3); + rxd->rxd4 = READ_ONCE(dma_rxd->rxd4); +- if (mtk_is_netsys_v2_or_greater(eth)) { ++ if (mtk_is_netsys_v3_or_greater(eth)) { + rxd->rxd5 = READ_ONCE(dma_rxd->rxd5); + rxd->rxd6 = READ_ONCE(dma_rxd->rxd6); + } +@@ -2155,7 +2155,7 @@ static int mtk_poll_rx(struct napi_struc + break; + + /* find out which mac the packet come from. values start at 1 */ +- if (mtk_is_netsys_v2_or_greater(eth)) { ++ if (mtk_is_netsys_v3_or_greater(eth)) { + u32 val = RX_DMA_GET_SPORT_V2(trxd.rxd5); + + switch (val) { +@@ -2267,7 +2267,7 @@ static int mtk_poll_rx(struct napi_struc + skb->dev = netdev; + bytes += skb->len; + +- if (mtk_is_netsys_v2_or_greater(eth)) { ++ if (mtk_is_netsys_v3_or_greater(eth)) { + reason = FIELD_GET(MTK_RXD5_PPE_CPU_REASON, trxd.rxd5); + hash = trxd.rxd5 & MTK_RXD5_FOE_ENTRY; + if (hash != MTK_RXD5_FOE_ENTRY) +@@ -2809,7 +2809,7 @@ static int mtk_rx_alloc(struct mtk_eth * + + rxd->rxd3 = 0; + rxd->rxd4 = 0; +- if (mtk_is_netsys_v2_or_greater(eth)) { ++ if (mtk_is_netsys_v3_or_greater(eth)) { + rxd->rxd5 = 0; + rxd->rxd6 = 0; + rxd->rxd7 = 0; +@@ -4012,7 +4012,7 @@ static int mtk_hw_init(struct mtk_eth *e + else + mtk_hw_reset(eth); + +- if (mtk_is_netsys_v2_or_greater(eth)) { ++ if (mtk_is_netsys_v3_or_greater(eth)) { + /* Set FE to PDMAv2 if necessary */ + val = mtk_r32(eth, MTK_FE_GLO_MISC); + mtk_w32(eth, val | BIT(4), MTK_FE_GLO_MISC); +@@ -5295,11 +5295,11 @@ static const struct mtk_soc_data mt7981_ + .dma_len_offset = 8, + }, + .rx = { +- .desc_size = sizeof(struct mtk_rx_dma_v2), +- .irq_done_mask = MTK_RX_DONE_INT_V2, ++ .desc_size = sizeof(struct mtk_rx_dma), ++ .irq_done_mask = MTK_RX_DONE_INT, + .dma_l4_valid = RX_DMA_L4_VALID_V2, +- .dma_max_len = MTK_TX_DMA_BUF_LEN_V2, +- .dma_len_offset = 8, ++ .dma_max_len = MTK_TX_DMA_BUF_LEN, ++ .dma_len_offset = 16, + }, + }; + +@@ -5321,11 +5321,11 @@ static const struct mtk_soc_data mt7986_ + .dma_len_offset = 8, + }, + .rx = { +- .desc_size = sizeof(struct mtk_rx_dma_v2), +- .irq_done_mask = MTK_RX_DONE_INT_V2, ++ .desc_size = sizeof(struct mtk_rx_dma), ++ .irq_done_mask = MTK_RX_DONE_INT, + .dma_l4_valid = RX_DMA_L4_VALID_V2, +- .dma_max_len = MTK_TX_DMA_BUF_LEN_V2, +- .dma_len_offset = 8, ++ .dma_max_len = MTK_TX_DMA_BUF_LEN, ++ .dma_len_offset = 16, + }, + }; + |