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Miller" , Alexandre Torgue , Jose Abreu , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , Joao Pinto Cc: netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, xfr@outlook.com, Furong Xu <0x1207@gmail.com> Subject: [PATCH net-next v5 4/7] net: stmmac: configure FPE via ethtool-mm Date: Tue, 20 Aug 2024 19:20:38 +0800 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Implement ethtool --show-mm and --set-mm callbacks. NIC up/down, link up/down, suspend/resume, kselftest-ethtool_mm, all tested okay. Signed-off-by: Furong Xu <0x1207@gmail.com> --- .../net/ethernet/stmicro/stmmac/dwmac4_core.c | 8 +- drivers/net/ethernet/stmicro/stmmac/dwmac5.c | 36 +++++- drivers/net/ethernet/stmicro/stmmac/dwmac5.h | 7 +- .../ethernet/stmicro/stmmac/dwxgmac2_core.c | 4 +- drivers/net/ethernet/stmicro/stmmac/hwif.h | 8 +- .../ethernet/stmicro/stmmac/stmmac_ethtool.c | 110 ++++++++++++++++++ .../net/ethernet/stmicro/stmmac/stmmac_main.c | 17 ++- .../net/ethernet/stmicro/stmmac/stmmac_tc.c | 2 +- 8 files changed, 179 insertions(+), 13 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index 31c387cc5f26..679efcc631f1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -58,10 +58,6 @@ static void dwmac4_core_init(struct mac_device_info *hw, if (hw->pcs) value |= GMAC_PCS_IRQ_DEFAULT; - /* Enable FPE interrupt */ - if ((GMAC_HW_FEAT_FPESEL & readl(ioaddr + GMAC_HW_FEATURE3)) >> 26) - value |= GMAC_INT_FPE_EN; - writel(value, ioaddr + GMAC_INT_EN); if (GMAC_INT_DEFAULT_ENABLE & GMAC_INT_TSIE) @@ -1268,6 +1264,8 @@ const struct stmmac_ops dwmac410_ops = { .fpe_configure = dwmac5_fpe_configure, .fpe_send_mpacket = dwmac5_fpe_send_mpacket, .fpe_irq_status = dwmac5_fpe_irq_status, + .fpe_get_add_frag_size = dwmac5_fpe_get_add_frag_size, + .fpe_set_add_frag_size = dwmac5_fpe_set_add_frag_size, .add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr, .del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr, .restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr, @@ -1320,6 +1318,8 @@ const struct stmmac_ops dwmac510_ops = { .fpe_configure = dwmac5_fpe_configure, .fpe_send_mpacket = dwmac5_fpe_send_mpacket, .fpe_irq_status = dwmac5_fpe_irq_status, + .fpe_get_add_frag_size = dwmac5_fpe_get_add_frag_size, + .fpe_set_add_frag_size = dwmac5_fpe_set_add_frag_size, .add_hw_vlan_rx_fltr = dwmac4_add_hw_vlan_rx_fltr, .del_hw_vlan_rx_fltr = dwmac4_del_hw_vlan_rx_fltr, .restore_hw_vlan_rx_fltr = dwmac4_restore_hw_vlan_rx_fltr, diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac5.c b/drivers/net/ethernet/stmicro/stmmac/dwmac5.c index e02cebc3f1b7..4c91fa766b13 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac5.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac5.c @@ -575,11 +575,11 @@ int dwmac5_flex_pps_config(void __iomem *ioaddr, int index, void dwmac5_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg, u32 num_txq, u32 num_rxq, - bool enable) + bool tx_enable, bool pmac_enable) { u32 value; - if (enable) { + if (tx_enable) { cfg->fpe_csr = EFPE; value = readl(ioaddr + GMAC_RXQ_CTRL1); value &= ~GMAC_RXQCTRL_FPRQ; @@ -589,6 +589,21 @@ void dwmac5_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg, cfg->fpe_csr = 0; } writel(cfg->fpe_csr, ioaddr + MAC_FPE_CTRL_STS); + + value = readl(ioaddr + GMAC_INT_EN); + + if (pmac_enable) { + if (!(value & GMAC_INT_FPE_EN)) { + /* Dummy read to clear any pending masked interrupts */ + (void)readl(ioaddr + MAC_FPE_CTRL_STS); + + value |= GMAC_INT_FPE_EN; + } + } else { + value &= ~GMAC_INT_FPE_EN; + } + + writel(value, ioaddr + GMAC_INT_EN); } int dwmac5_fpe_irq_status(void __iomem *ioaddr, struct net_device *dev) @@ -638,3 +653,20 @@ void dwmac5_fpe_send_mpacket(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg, writel(value, ioaddr + MAC_FPE_CTRL_STS); } + +int dwmac5_fpe_get_add_frag_size(void __iomem *ioaddr) +{ + return FIELD_GET(AFSZ, readl(ioaddr + MTL_FPE_CTRL_STS)); +} + +void dwmac5_fpe_set_add_frag_size(void __iomem *ioaddr, u32 add_frag_size) +{ + u32 value; + + value = readl(ioaddr + MTL_FPE_CTRL_STS); + + value &= ~AFSZ; + value |= FIELD_PREP(AFSZ, add_frag_size); + + writel(value, ioaddr + MTL_FPE_CTRL_STS); +} diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac5.h b/drivers/net/ethernet/stmicro/stmmac/dwmac5.h index bf33a51d229e..e369e65920fc 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac5.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac5.h @@ -39,6 +39,9 @@ #define MAC_PPSx_INTERVAL(x) (0x00000b88 + ((x) * 0x10)) #define MAC_PPSx_WIDTH(x) (0x00000b8c + ((x) * 0x10)) +#define MTL_FPE_CTRL_STS 0x00000c90 +#define AFSZ GENMASK(1, 0) + #define MTL_RXP_CONTROL_STATUS 0x00000ca0 #define RXPI BIT(31) #define NPE GENMASK(23, 16) @@ -104,10 +107,12 @@ int dwmac5_flex_pps_config(void __iomem *ioaddr, int index, u32 sub_second_inc, u32 systime_flags); void dwmac5_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg, u32 num_txq, u32 num_rxq, - bool enable); + bool tx_enable, bool pmac_enable); void dwmac5_fpe_send_mpacket(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg, enum stmmac_mpacket_type type); int dwmac5_fpe_irq_status(void __iomem *ioaddr, struct net_device *dev); +int dwmac5_fpe_get_add_frag_size(void __iomem *ioaddr); +void dwmac5_fpe_set_add_frag_size(void __iomem *ioaddr, u32 add_frag_size); #endif /* __DWMAC5_H__ */ diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c index cbf2dd976ab1..55a175ced77f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c @@ -1506,11 +1506,11 @@ static void dwxgmac2_set_arp_offload(struct mac_device_info *hw, bool en, static void dwxgmac3_fpe_configure(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg, u32 num_txq, - u32 num_rxq, bool enable) + u32 num_rxq, bool tx_enable, bool pmac_enable) { u32 value; - if (!enable) { + if (!tx_enable) { value = readl(ioaddr + XGMAC_FPE_CTRL_STS); value &= ~XGMAC_EFPE; diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h index d3da82982012..ba4418eaa8ba 100644 --- a/drivers/net/ethernet/stmicro/stmmac/hwif.h +++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h @@ -421,11 +421,13 @@ struct stmmac_ops { void (*set_arp_offload)(struct mac_device_info *hw, bool en, u32 addr); void (*fpe_configure)(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg, u32 num_txq, u32 num_rxq, - bool enable); + bool tx_enable, bool pmac_enable); void (*fpe_send_mpacket)(void __iomem *ioaddr, struct stmmac_fpe_cfg *cfg, enum stmmac_mpacket_type type); int (*fpe_irq_status)(void __iomem *ioaddr, struct net_device *dev); + int (*fpe_get_add_frag_size)(void __iomem *ioaddr); + void (*fpe_set_add_frag_size)(void __iomem *ioaddr, u32 add_frag_size); }; #define stmmac_core_init(__priv, __args...) \ @@ -530,6 +532,10 @@ struct stmmac_ops { stmmac_do_void_callback(__priv, mac, fpe_send_mpacket, __args) #define stmmac_fpe_irq_status(__priv, __args...) \ stmmac_do_callback(__priv, mac, fpe_irq_status, __args) +#define stmmac_fpe_get_add_frag_size(__priv, __args...) \ + stmmac_do_callback(__priv, mac, fpe_get_add_frag_size, __args) +#define stmmac_fpe_set_add_frag_size(__priv, __args...) \ + stmmac_do_void_callback(__priv, mac, fpe_set_add_frag_size, __args) /* PTP and HW Timer helpers */ struct stmmac_hwtimestamp { diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c index 7008219fd88d..a8cdcacecc26 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c @@ -19,6 +19,7 @@ #include "stmmac.h" #include "dwmac_dma.h" #include "dwxgmac2.h" +#include "dwmac5.h" #define REG_SPACE_SIZE 0x1060 #define GMAC4_REG_SPACE_SIZE 0x116C @@ -1270,6 +1271,112 @@ static int stmmac_set_tunable(struct net_device *dev, return ret; } +static int stmmac_get_mm(struct net_device *ndev, + struct ethtool_mm_state *state) +{ + struct stmmac_priv *priv = netdev_priv(ndev); + unsigned long flags; + u32 add_frag_size; + + if (!priv->dma_cap.fpesel) + return -EOPNOTSUPP; + + spin_lock_irqsave(&priv->fpe_cfg.lock, flags); + + state->pmac_enabled = priv->fpe_cfg.pmac_enabled; + state->verify_time = priv->fpe_cfg.verify_time; + state->verify_enabled = priv->fpe_cfg.verify_enabled; + state->verify_status = priv->fpe_cfg.status; + state->rx_min_frag_size = ETH_ZLEN; + + /* 802.3-2018 clause 30.14.1.6, says that the aMACMergeVerifyTime + * variable has a range between 1 and 128 ms inclusive. Limit to that. + */ + state->max_verify_time = 128; + + /* Cannot read MAC_FPE_CTRL_STS register here, or FPE interrupt events + * can be lost. + * + * See commit 37e4b8df27bc ("net: stmmac: fix FPE events losing") + */ + state->tx_enabled = !!(priv->fpe_cfg.fpe_csr == EFPE); + + /* FPE active if common tx_enabled and verification success or disabled (forced) */ + state->tx_active = state->tx_enabled && + (state->verify_status == ETHTOOL_MM_VERIFY_STATUS_SUCCEEDED || + state->verify_status == ETHTOOL_MM_VERIFY_STATUS_DISABLED); + + add_frag_size = stmmac_fpe_get_add_frag_size(priv, priv->ioaddr); + state->tx_min_frag_size = ethtool_mm_frag_size_add_to_min(add_frag_size); + + spin_unlock_irqrestore(&priv->fpe_cfg.lock, flags); + + return 0; +} + +static int stmmac_set_mm(struct net_device *ndev, struct ethtool_mm_cfg *cfg, + struct netlink_ext_ack *extack) +{ + struct stmmac_priv *priv = netdev_priv(ndev); + struct stmmac_fpe_cfg *fpe_cfg = &priv->fpe_cfg; + unsigned long flags; + u32 add_frag_size; + int err; + + if (!priv->dma_cap.fpesel) + return -EOPNOTSUPP; + + /* Wait for the fpe_task that's currently in progress to finish */ + flush_workqueue(priv->fpe_wq); + + err = ethtool_mm_frag_size_min_to_add(cfg->tx_min_frag_size, + &add_frag_size, extack); + if (err) + return err; + + spin_lock_irqsave(&priv->fpe_cfg.lock, flags); + + fpe_cfg->pmac_enabled = cfg->pmac_enabled; + fpe_cfg->verify_time = cfg->verify_time; + fpe_cfg->verify_enabled = cfg->verify_enabled; + + stmmac_fpe_configure(priv, priv->ioaddr, fpe_cfg, + priv->plat->tx_queues_to_use, + priv->plat->rx_queues_to_use, + cfg->tx_enabled, cfg->pmac_enabled); + + stmmac_fpe_set_add_frag_size(priv, priv->ioaddr, add_frag_size); + + if (cfg->verify_enabled) + stmmac_fpe_send_mpacket(priv, priv->ioaddr, fpe_cfg, + MPACKET_VERIFY); + else + fpe_cfg->status = ETHTOOL_MM_VERIFY_STATUS_DISABLED; + + spin_unlock_irqrestore(&priv->fpe_cfg.lock, flags); + + return 0; +} + +static void stmmac_get_mm_stats(struct net_device *ndev, + struct ethtool_mm_stats *s) +{ + struct stmmac_priv *priv = netdev_priv(ndev); + struct stmmac_counters *mmc = &priv->mmc; + + if (!priv->dma_cap.rmon) + return; + + stmmac_mmc_read(priv, priv->mmcaddr, mmc); + + s->MACMergeFrameAssErrorCount = mmc->mmc_rx_packet_assembly_err_cntr; + s->MACMergeFrameSmdErrorCount = mmc->mmc_rx_packet_smd_err_cntr; + s->MACMergeFrameAssOkCount = mmc->mmc_rx_packet_assembly_ok_cntr; + s->MACMergeFragCountRx = mmc->mmc_rx_fpe_fragment_cntr; + s->MACMergeFragCountTx = mmc->mmc_tx_fpe_fragment_cntr; + s->MACMergeHoldCount = mmc->mmc_tx_hold_req_cntr; +} + static const struct ethtool_ops stmmac_ethtool_ops = { .supported_coalesce_params = ETHTOOL_COALESCE_USECS | ETHTOOL_COALESCE_MAX_FRAMES, @@ -1309,6 +1416,9 @@ static const struct ethtool_ops stmmac_ethtool_ops = { .set_tunable = stmmac_set_tunable, .get_link_ksettings = stmmac_ethtool_get_link_ksettings, .set_link_ksettings = stmmac_ethtool_set_link_ksettings, + .get_mm = stmmac_get_mm, + .set_mm = stmmac_set_mm, + .get_mm_stats = stmmac_get_mm_stats, }; void stmmac_set_ethtool_ops(struct net_device *netdev) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 6ae95f20b24f..3df9cad0848b 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -3537,8 +3537,21 @@ static int stmmac_hw_setup(struct net_device *dev, bool ptp_register) stmmac_set_hw_vlan_mode(priv, priv->hw); - if (priv->dma_cap.fpesel) + if (priv->dma_cap.fpesel) { + /* A SW reset just happened in stmmac_init_dma_engine(), + * we should restore fpe_cfg to HW, or FPE will stop working + * from suspend/resume. + */ + spin_lock(&priv->fpe_cfg.lock); + stmmac_fpe_configure(priv, priv->ioaddr, + &priv->fpe_cfg, + priv->plat->tx_queues_to_use, + priv->plat->rx_queues_to_use, + false, priv->fpe_cfg.pmac_enabled); + spin_unlock(&priv->fpe_cfg.lock); + stmmac_fpe_start_wq(priv); + } return 0; } @@ -7417,7 +7430,7 @@ static void stmmac_fpe_verify_task(struct work_struct *work) stmmac_fpe_configure(priv, priv->ioaddr, fpe_cfg, priv->plat->tx_queues_to_use, priv->plat->rx_queues_to_use, - false); + false, fpe_cfg->pmac_enabled); spin_unlock_irqrestore(&priv->fpe_cfg.lock, flags); break; } diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c index 783829a6479c..a58282d6458c 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c @@ -1093,7 +1093,7 @@ static int tc_taprio_configure(struct stmmac_priv *priv, &priv->fpe_cfg, priv->plat->tx_queues_to_use, priv->plat->rx_queues_to_use, - false); + false, false); netdev_info(priv->dev, "disabled FPE\n"); return ret;