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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Maxime Coquelin , xfr@outlook.com, Furong Xu <0x1207@gmail.com> Subject: [PATCH net-next v7 7/8] net: stmmac: xgmac: Complete FPE support Date: Thu, 31 Oct 2024 20:38:01 +0800 Message-Id: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Implement the necessary fpe_map_preemption_class callback for xgmac. Signed-off-by: Furong Xu <0x1207@gmail.com> --- .../ethernet/stmicro/stmmac/dwxgmac2_core.c | 2 + .../net/ethernet/stmicro/stmmac/stmmac_fpe.c | 43 +++++++++++++++++++ .../net/ethernet/stmicro/stmmac/stmmac_fpe.h | 3 ++ 3 files changed, 48 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c b/drivers/= net/ethernet/stmicro/stmmac/dwxgmac2_core.c index de6ffda31a80..9a60a6e8f633 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_core.c @@ -1545,6 +1545,7 @@ const struct stmmac_ops dwxgmac210_ops =3D { .config_l3_filter =3D dwxgmac2_config_l3_filter, .config_l4_filter =3D dwxgmac2_config_l4_filter, .set_arp_offload =3D dwxgmac2_set_arp_offload, + .fpe_map_preemption_class =3D dwxgmac3_fpe_map_preemption_class, }; =20 static void dwxlgmac2_rx_queue_enable(struct mac_device_info *hw, u8 mode, @@ -1601,6 +1602,7 @@ const struct stmmac_ops dwxlgmac2_ops =3D { .config_l3_filter =3D dwxgmac2_config_l3_filter, .config_l4_filter =3D dwxgmac2_config_l4_filter, .set_arp_offload =3D dwxgmac2_set_arp_offload, + .fpe_map_preemption_class =3D dwxgmac3_fpe_map_preemption_class, }; =20 int dwxgmac2_setup(struct stmmac_priv *priv) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.c b/drivers/net= /ethernet/stmicro/stmmac/stmmac_fpe.c index b833ccf3e455..884b37ad0347 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.c @@ -351,6 +351,49 @@ int dwmac5_fpe_map_preemption_class(struct net_device = *ndev, return 0; } =20 +int dwxgmac3_fpe_map_preemption_class(struct net_device *ndev, + struct netlink_ext_ack *extack, u32 pclass) +{ + u32 val, offset, count, preemptible_txqs =3D 0; + struct stmmac_priv *priv =3D netdev_priv(ndev); + int num_tc =3D netdev_get_num_tc(ndev); + + if (!num_tc) { + /* Restore default TC:Queue mapping */ + for (u32 i =3D 0; i < priv->plat->tx_queues_to_use; i++) { + val =3D readl(priv->ioaddr + XGMAC_MTL_TXQ_OPMODE(i)); + writel(u32_replace_bits(val, i, XGMAC_Q2TCMAP), + priv->ioaddr + XGMAC_MTL_TXQ_OPMODE(i)); + } + } + + /* Synopsys Databook: + * "All Queues within a traffic class are selected in a round robin + * fashion (when packets are available) when the traffic class is + * selected by the scheduler for packet transmission. This is true for + * any of the scheduling algorithms." + */ + for (u32 tc =3D 0; tc < num_tc; tc++) { + count =3D ndev->tc_to_txq[tc].count; + offset =3D ndev->tc_to_txq[tc].offset; + + if (pclass & BIT(tc)) + preemptible_txqs |=3D GENMASK(offset + count - 1, offset); + + for (u32 i =3D 0; i < count; i++) { + val =3D readl(priv->ioaddr + XGMAC_MTL_TXQ_OPMODE(offset + i)); + writel(u32_replace_bits(val, tc, XGMAC_Q2TCMAP), + priv->ioaddr + XGMAC_MTL_TXQ_OPMODE(offset + i)); + } + } + + val =3D readl(priv->ioaddr + XGMAC_MTL_FPE_CTRL_STS); + writel(u32_replace_bits(val, preemptible_txqs, FPE_MTL_PREEMPTION_CLASS), + priv->ioaddr + XGMAC_MTL_FPE_CTRL_STS); + + return 0; +} + const struct stmmac_fpe_reg dwmac5_fpe_reg =3D { .mac_fpe_reg =3D GMAC5_MAC_FPE_CTRL_STS, .mtl_fpe_reg =3D GMAC5_MTL_FPE_CTRL_STS, diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.h b/drivers/net= /ethernet/stmicro/stmmac/stmmac_fpe.h index 2f8bceaf7a0a..4d17302bc868 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.h @@ -27,6 +27,9 @@ void stmmac_fpe_set_add_frag_size(struct stmmac_priv *pri= v, u32 add_frag_size); =20 int dwmac5_fpe_map_preemption_class(struct net_device *ndev, struct netlink_ext_ack *extack, u32 pclass); +int dwxgmac3_fpe_map_preemption_class(struct net_device *ndev, + struct netlink_ext_ack *extack, + u32 pclass); =20 extern const struct stmmac_fpe_reg dwmac5_fpe_reg; extern const struct stmmac_fpe_reg dwxgmac3_fpe_reg; --=20 2.34.1