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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 4/8] net: stmmac: Introduce stmmac_fpe_supported() Date: Thu, 31 Oct 2024 20:37:58 +0800 Message-Id: <917f3868cdaf8ce1d45239117c3ea1c8c45ba56c.1730376866.git.0x1207@gmail.com> 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" Call stmmac_fpe_supported() to check both HW capability and driver capability to keep FPE as an optional implementation for current and new MAC cores. Signed-off-by: Furong Xu <0x1207@gmail.com> --- drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 2 +- drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.c | 10 ++++++++++ drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.h | 1 + drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 10 +++++----- 4 files changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers= /net/ethernet/stmicro/stmmac/stmmac_ethtool.c index f2783f7c46f3..1d77389ce953 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c @@ -1271,7 +1271,7 @@ static int stmmac_get_mm(struct net_device *ndev, unsigned long flags; u32 frag_size; =20 - if (!priv->dma_cap.fpesel) + if (!stmmac_fpe_supported(priv)) return -EOPNOTSUPP; =20 spin_lock_irqsave(&priv->fpe_cfg.lock, flags); diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.c b/drivers/net= /ethernet/stmicro/stmmac/stmmac_fpe.c index 818741579904..fe0877ef5f4f 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.c @@ -42,6 +42,12 @@ struct stmmac_fpe_reg { const u32 int_en_bit; /* Frame Preemption Interrupt Enable */ }; =20 +bool stmmac_fpe_supported(struct stmmac_priv *priv) +{ + return priv->dma_cap.fpesel && priv->fpe_cfg.reg && + priv->hw->mac->fpe_map_preemption_class; +} + void stmmac_fpe_link_state_handle(struct stmmac_priv *priv, bool is_up) { struct stmmac_fpe_cfg *fpe_cfg =3D &priv->fpe_cfg; @@ -173,6 +179,10 @@ void stmmac_fpe_init(struct stmmac_priv *priv) priv->fpe_cfg.status =3D ETHTOOL_MM_VERIFY_STATUS_DISABLED; timer_setup(&priv->fpe_cfg.verify_timer, stmmac_fpe_verify_timer, 0); spin_lock_init(&priv->fpe_cfg.lock); + + if ((!priv->fpe_cfg.reg || !priv->hw->mac->fpe_map_preemption_class) && + priv->dma_cap.fpesel) + dev_info(priv->device, "FPE on this MAC is not supported by driver.\n"); } =20 void stmmac_fpe_apply(struct stmmac_priv *priv) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.h b/drivers/net= /ethernet/stmicro/stmmac/stmmac_fpe.h index 15fcb9ef1a97..2f8bceaf7a0a 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.h +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_fpe.h @@ -16,6 +16,7 @@ struct stmmac_priv; struct stmmac_fpe_cfg; =20 void stmmac_fpe_link_state_handle(struct stmmac_priv *priv, bool is_up); +bool stmmac_fpe_supported(struct stmmac_priv *priv); void stmmac_fpe_init(struct stmmac_priv *priv); void stmmac_fpe_apply(struct stmmac_priv *priv); void stmmac_fpe_configure(struct stmmac_priv *priv, bool tx_enable, diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/ne= t/ethernet/stmicro/stmmac/stmmac_main.c index 9fcf2df099ec..883b4b814125 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -978,7 +978,7 @@ static void stmmac_mac_link_down(struct phylink_config = *config, priv->eee_enabled =3D stmmac_eee_init(priv); stmmac_set_eee_pls(priv, priv->hw, false); =20 - if (priv->dma_cap.fpesel) + if (stmmac_fpe_supported(priv)) stmmac_fpe_link_state_handle(priv, false); } =20 @@ -1092,7 +1092,7 @@ static void stmmac_mac_link_up(struct phylink_config = *config, stmmac_set_eee_pls(priv, priv->hw, true); } =20 - if (priv->dma_cap.fpesel) + if (stmmac_fpe_supported(priv)) stmmac_fpe_link_state_handle(priv, true); =20 if (priv->plat->flags & STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY) @@ -4040,7 +4040,7 @@ static int stmmac_release(struct net_device *dev) =20 stmmac_release_ptp(priv); =20 - if (priv->dma_cap.fpesel) + if (stmmac_fpe_supported(priv)) timer_shutdown_sync(&priv->fpe_cfg.verify_timer); =20 pm_runtime_put(priv->device); @@ -5943,7 +5943,7 @@ static void stmmac_common_interrupt(struct stmmac_pri= v *priv) stmmac_est_irq_status(priv, priv, priv->dev, &priv->xstats, tx_cnt); =20 - if (priv->dma_cap.fpesel) + if (stmmac_fpe_supported(priv)) stmmac_fpe_irq_status(priv); =20 /* To handle GMAC own interrupts */ @@ -7729,7 +7729,7 @@ int stmmac_suspend(struct device *dev) } rtnl_unlock(); =20 - if (priv->dma_cap.fpesel) + if (stmmac_fpe_supported(priv)) timer_shutdown_sync(&priv->fpe_cfg.verify_timer); =20 priv->speed =3D SPEED_UNKNOWN; --=20 2.34.1