From a41d535855976838d246c079143c948dcf0f7931 Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Tue, 25 Jul 2023 01:52:59 +0100 Subject: [PATCH 102/250] net: ethernet: mtk_eth_soc: add NETSYS_V3 version support Introduce NETSYS_V3 chipset version support. This is a preliminary patch to introduce support for MT7988 SoC. Signed-off-by: Lorenzo Bianconi Signed-off-by: Daniel Golle Link: https://lore.kernel.org/r/0db2260910755d76fa48e303b9f9bdf4e5a82340.1690246066.git.daniel@makrotopia.org Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 105 ++++++++++++++------ drivers/net/ethernet/mediatek/mtk_eth_soc.h | 48 +++++++-- 2 files changed, 116 insertions(+), 37 deletions(-) --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -818,17 +818,32 @@ void mtk_stats_update_mac(struct mtk_mac mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x20 + offs); hw_stats->rx_flow_control_packets += mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x24 + offs); - hw_stats->tx_skip += - mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x28 + offs); - hw_stats->tx_collisions += - mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x2c + offs); - hw_stats->tx_bytes += - mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x30 + offs); - stats = mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x34 + offs); - if (stats) - hw_stats->tx_bytes += (stats << 32); - hw_stats->tx_packets += - mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x38 + offs); + + if (mtk_is_netsys_v3_or_greater(eth)) { + hw_stats->tx_skip += + mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x50 + offs); + hw_stats->tx_collisions += + mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x54 + offs); + hw_stats->tx_bytes += + mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x40 + offs); + stats = mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x44 + offs); + if (stats) + hw_stats->tx_bytes += (stats << 32); + hw_stats->tx_packets += + mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x48 + offs); + } else { + hw_stats->tx_skip += + mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x28 + offs); + hw_stats->tx_collisions += + mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x2c + offs); + hw_stats->tx_bytes += + mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x30 + offs); + stats = mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x34 + offs); + if (stats) + hw_stats->tx_bytes += (stats << 32); + hw_stats->tx_packets += + mtk_r32(mac->hw, reg_map->gdm1_cnt + 0x38 + offs); + } } u64_stats_update_end(&hw_stats->syncp); @@ -1130,7 +1145,10 @@ static void mtk_tx_set_dma_desc_v2(struc data |= TX_DMA_LS0; WRITE_ONCE(desc->txd3, data); - data = (mac->id + 1) << TX_DMA_FPORT_SHIFT_V2; /* forward port */ + if (mac->id == MTK_GMAC3_ID) + data = PSE_GDM3_PORT; + else + data = (mac->id + 1) << TX_DMA_FPORT_SHIFT_V2; /* forward port */ data |= TX_DMA_SWC_V2 | QID_BITS_V2(info->qid); WRITE_ONCE(desc->txd4, data); @@ -1141,6 +1159,8 @@ static void mtk_tx_set_dma_desc_v2(struc /* tx checksum offload */ if (info->csum) data |= TX_DMA_CHKSUM_V2; + if (mtk_is_netsys_v3_or_greater(eth) && netdev_uses_dsa(dev)) + data |= TX_DMA_SPTAG_V3; } WRITE_ONCE(desc->txd5, data); @@ -1206,8 +1226,7 @@ static int mtk_tx_map(struct sk_buff *sk mtk_tx_set_dma_desc(dev, itxd, &txd_info); itx_buf->flags |= MTK_TX_FLAGS_SINGLE0; - itx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 : - MTK_TX_FLAGS_FPORT1; + itx_buf->mac_id = mac->id; setup_tx_buf(eth, itx_buf, itxd_pdma, txd_info.addr, txd_info.size, k++); @@ -1255,8 +1274,7 @@ static int mtk_tx_map(struct sk_buff *sk memset(tx_buf, 0, sizeof(*tx_buf)); tx_buf->data = (void *)MTK_DMA_DUMMY_DESC; tx_buf->flags |= MTK_TX_FLAGS_PAGE0; - tx_buf->flags |= (!mac->id) ? MTK_TX_FLAGS_FPORT0 : - MTK_TX_FLAGS_FPORT1; + tx_buf->mac_id = mac->id; setup_tx_buf(eth, tx_buf, txd_pdma, txd_info.addr, txd_info.size, k++); @@ -1558,7 +1576,7 @@ static int mtk_xdp_frame_map(struct mtk_ } mtk_tx_set_dma_desc(dev, txd, txd_info); - tx_buf->flags |= !mac->id ? MTK_TX_FLAGS_FPORT0 : MTK_TX_FLAGS_FPORT1; + tx_buf->mac_id = mac->id; tx_buf->type = dma_map ? MTK_TYPE_XDP_NDO : MTK_TYPE_XDP_TX; tx_buf->data = (void *)MTK_DMA_DUMMY_DESC; @@ -1806,11 +1824,24 @@ 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)) - mac = RX_DMA_GET_SPORT_V2(trxd.rxd5) - 1; - else if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628) && - !(trxd.rxd4 & RX_DMA_SPECIAL_TAG)) + if (mtk_is_netsys_v2_or_greater(eth)) { + u32 val = RX_DMA_GET_SPORT_V2(trxd.rxd5); + + switch (val) { + case PSE_GDM1_PORT: + case PSE_GDM2_PORT: + mac = val - 1; + break; + case PSE_GDM3_PORT: + mac = MTK_GMAC3_ID; + break; + default: + break; + } + } else if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628) && + !(trxd.rxd4 & RX_DMA_SPECIAL_TAG)) { mac = RX_DMA_GET_SPORT(trxd.rxd4) - 1; + } if (unlikely(mac < 0 || mac >= MTK_MAX_DEVS || !eth->netdev[mac])) @@ -2030,7 +2061,6 @@ static int mtk_poll_tx_qdma(struct mtk_e while ((cpu != dma) && budget) { u32 next_cpu = desc->txd2; - int mac = 0; desc = mtk_qdma_phys_to_virt(ring, desc->txd2); if ((desc->txd3 & TX_DMA_OWNER_CPU) == 0) @@ -2038,15 +2068,13 @@ static int mtk_poll_tx_qdma(struct mtk_e tx_buf = mtk_desc_to_tx_buf(ring, desc, eth->soc->txrx.txd_size); - if (tx_buf->flags & MTK_TX_FLAGS_FPORT1) - mac = 1; - if (!tx_buf->data) break; if (tx_buf->data != (void *)MTK_DMA_DUMMY_DESC) { if (tx_buf->type == MTK_TYPE_SKB) - mtk_poll_tx_done(eth, state, mac, tx_buf->data); + mtk_poll_tx_done(eth, state, tx_buf->mac_id, + tx_buf->data); budget--; } @@ -3651,7 +3679,24 @@ static int mtk_hw_init(struct mtk_eth *e mtk_w32(eth, eth->soc->txrx.rx_irq_done_mask, reg_map->qdma.int_grp + 4); mtk_w32(eth, 0x21021000, MTK_FE_INT_GRP); - if (mtk_is_netsys_v2_or_greater(eth)) { + if (mtk_is_netsys_v3_or_greater(eth)) { + /* PSE should not drop port1, port8 and port9 packets */ + mtk_w32(eth, 0x00000302, PSE_DROP_CFG); + + /* GDM and CDM Threshold */ + mtk_w32(eth, 0x00000707, MTK_CDMW0_THRES); + mtk_w32(eth, 0x00000077, MTK_CDMW1_THRES); + + /* Disable GDM1 RX CRC stripping */ + mtk_m32(eth, MTK_GDMA_STRP_CRC, 0, MTK_GDMA_FWD_CFG(0)); + + /* PSE GDM3 MIB counter has incorrect hw default values, + * so the driver ought to read clear the values beforehand + * in case ethtool retrieve wrong mib values. + */ + for (i = 0; i < 0x80; i += 0x4) + mtk_r32(eth, reg_map->gdm1_cnt + 0x100 + i); + } else if (!mtk_is_netsys_v1(eth)) { /* PSE should not drop port8 and port9 packets from WDMA Tx */ mtk_w32(eth, 0x00000300, PSE_DROP_CFG); @@ -4213,7 +4258,11 @@ static int mtk_add_mac(struct mtk_eth *e } spin_lock_init(&mac->hw_stats->stats_lock); u64_stats_init(&mac->hw_stats->syncp); - mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET; + + if (mtk_is_netsys_v3_or_greater(eth)) + mac->hw_stats->reg_offset = id * 0x80; + else + mac->hw_stats->reg_offset = id * 0x40; /* phylink create */ err = of_get_phy_mode(np, &phy_mode); --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -122,6 +122,7 @@ #define MTK_GDMA_ICS_EN BIT(22) #define MTK_GDMA_TCS_EN BIT(21) #define MTK_GDMA_UCS_EN BIT(20) +#define MTK_GDMA_STRP_CRC BIT(16) #define MTK_GDMA_TO_PDMA 0x0 #define MTK_GDMA_DROP_ALL 0x7777 @@ -287,8 +288,6 @@ /* QDMA Interrupt grouping registers */ #define MTK_RLS_DONE_INT BIT(0) -#define MTK_STAT_OFFSET 0x40 - /* QDMA TX NUM */ #define QID_BITS_V2(x) (((x) & 0x3f) << 16) #define MTK_QDMA_GMAC2_QID 8 @@ -301,6 +300,8 @@ #define TX_DMA_CHKSUM_V2 (0x7 << 28) #define TX_DMA_TSO_V2 BIT(31) +#define TX_DMA_SPTAG_V3 BIT(27) + /* QDMA V2 descriptor txd4 */ #define TX_DMA_FPORT_SHIFT_V2 8 #define TX_DMA_FPORT_MASK_V2 0xf @@ -631,12 +632,6 @@ enum mtk_tx_flags { */ MTK_TX_FLAGS_SINGLE0 = 0x01, MTK_TX_FLAGS_PAGE0 = 0x02, - - /* MTK_TX_FLAGS_FPORTx allows tracking which port the transmitted - * SKB out instead of looking up through hardware TX descriptor. - */ - MTK_TX_FLAGS_FPORT0 = 0x04, - MTK_TX_FLAGS_FPORT1 = 0x08, }; /* This enum allows us to identify how the clock is defined on the array of the @@ -722,6 +717,35 @@ enum mtk_dev_state { MTK_RESETTING }; +/* PSE Port Definition */ +enum mtk_pse_port { + PSE_ADMA_PORT = 0, + PSE_GDM1_PORT, + PSE_GDM2_PORT, + PSE_PPE0_PORT, + PSE_PPE1_PORT, + PSE_QDMA_TX_PORT, + PSE_QDMA_RX_PORT, + PSE_DROP_PORT, + PSE_WDMA0_PORT, + PSE_WDMA1_PORT, + PSE_TDMA_PORT, + PSE_NONE_PORT, + PSE_PPE2_PORT, + PSE_WDMA2_PORT, + PSE_EIP197_PORT, + PSE_GDM3_PORT, + PSE_PORT_MAX +}; + +/* GMAC Identifier */ +enum mtk_gmac_id { + MTK_GMAC1_ID = 0, + MTK_GMAC2_ID, + MTK_GMAC3_ID, + MTK_GMAC_ID_MAX +}; + enum mtk_tx_buf_type { MTK_TYPE_SKB, MTK_TYPE_XDP_TX, @@ -740,7 +764,8 @@ struct mtk_tx_buf { enum mtk_tx_buf_type type; void *data; - u32 flags; + u16 mac_id; + u16 flags; DEFINE_DMA_UNMAP_ADDR(dma_addr0); DEFINE_DMA_UNMAP_LEN(dma_len0); DEFINE_DMA_UNMAP_ADDR(dma_addr1); @@ -1189,6 +1214,11 @@ static inline bool mtk_is_netsys_v2_or_g return eth->soc->version > 1; } +static inline bool mtk_is_netsys_v3_or_greater(struct mtk_eth *eth) +{ + return eth->soc->version > 2; +} + static inline struct mtk_foe_entry * mtk_foe_get_entry(struct mtk_ppe *ppe, u16 hash) {