From patchwork Mon Aug 5 10:25:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Russell King (Oracle)" X-Patchwork-Id: 13753445 X-Patchwork-Delegate: kuba@kernel.org Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [78.32.30.218]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CDC8E157E7D; Mon, 5 Aug 2024 10:25:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=78.32.30.218 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722853526; cv=none; b=LzZDzjJiPX9E/1rIOnBjVYf0W7R/xvt2/gI3rLCrORfptZxHEbfhj0PYtU6l7MWniEJhs+ty2B2pyV3m4EiI7BLS41owgFFNZeo4wT1bvet8ySjbVfOreqme+CRBl1YOrE3zbjWOqe+YjrSi0H3RFvPIOpb1CCLejXY664TNpds= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722853526; c=relaxed/simple; bh=p1mKDn2jk7rxfYSG81m6boKJ9PG9+PAuUcxhATBuP5A=; h=In-Reply-To:References:From:To:Cc:Subject:MIME-Version: Content-Disposition:Content-Type:Message-Id:Date; b=FJ0ooojzmuWaruX0FffPk2hvBAzGlOq0LkTUZ1327J8p+8Fu2u8n21TsGRLMX7CRT1h1bKRK4ket4/TVNTSR1gIaRcdD+FBJJub2BehPfCCOlHKVyZdSCllSqqKvp0oCUsylcoHSqODv4c3Dt+IRgVD6QIRxgUI1rQ6kl1FHkjA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk; spf=none smtp.mailfrom=armlinux.org.uk; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b=Z7V+2E3m; arc=none smtp.client-ip=78.32.30.218 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=armlinux.org.uk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="Z7V+2E3m" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Date:Sender:Message-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:Subject:Cc:To:From:References: In-Reply-To:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=4++u+M2gUsWJ0uVVvTAggA9qzMZa6bmuLtZOnE5wpxw=; b=Z7V+2E3mpWd2dna/7uqGV1aeog oyddVgQ6PuRE93H5RflR9j33MqOAvoG2TvBnABpfUNpN5uV++LdNSViZ4v82lQ2WJs9Qy4S1OIW42 4l9z3A5DitNghepg/2IHhc/bCkpHIfmPsGRbfkZ2O84JyUvWZGMgTiU4XWJbRufBcYwl2ya1e5CeY 3633Vxt0JZXG6zeahs0laq7LcRpq6WaUMdUmSKoCsXv9X/PPC8VVJrPiqQBI+Om7DkOJr44bR6CLI ab8Xfljb9mMrBF09TK1nw1JuVr3IEwAdcJSb3ahtuSba2+tccOl5cdwfqIz02iJKJTea8M2ZP88MQ KiNtRlvQ==; Received: from e0022681537dd.dyn.armlinux.org.uk ([fd8f:7570:feb6:1:222:68ff:fe15:37dd]:38508 helo=rmk-PC.armlinux.org.uk) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1sauts-0002d8-1x; Mon, 05 Aug 2024 11:25:12 +0100 Received: from rmk by rmk-PC.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1sautx-000tvO-Fm; Mon, 05 Aug 2024 11:25:17 +0100 In-Reply-To: References: From: "Russell King (Oracle)" To: Serge Semin Cc: Alexandre Torgue , Alexei Starovoitov , Andrew Halaney , Bartosz Golaszewski , bpf@vger.kernel.org, Daniel Borkmann , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Jesper Dangaard Brouer , John Fastabend , Jose Abreu , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, Maxime Coquelin , netdev@vger.kernel.org, Paolo Abeni , Sneh Shah , Vinod Koul Subject: [PATCH RFC net-next v4 08/14] net: stmmac: dwmac4: convert sgmii/rgmii "pcs" to phylink Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline Message-Id: Sender: Russell King Date: Mon, 05 Aug 2024 11:25:17 +0100 X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Convert dwmac4 sgmii/rgmii "pcs" implementation to use a phylink_pcs so we can eventually get rid of the exceptional paths that conflict with phylink. We do not provide a validate method to enforce auto-negotiation, because the ethtool autonegotiation is a property of the media facing link, not of the internal network device links. Signed-off-by: Russell King (Oracle) --- drivers/net/ethernet/stmicro/stmmac/dwmac4.h | 13 +---- .../net/ethernet/stmicro/stmmac/dwmac4_core.c | 58 +++++++++++-------- 2 files changed, 34 insertions(+), 37 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h index d3c5306f1c41..c6a254ecfbb8 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h @@ -567,18 +567,7 @@ static inline u32 mtl_low_credx_base_addr(const struct dwmac4_addrs *addrs, #define GMAC_PHYIF_CTRLSTATUS_TC BIT(0) #define GMAC_PHYIF_CTRLSTATUS_LUD BIT(1) #define GMAC_PHYIF_CTRLSTATUS_SMIDRXS BIT(4) -#define GMAC_PHYIF_CTRLSTATUS_LNKMOD BIT(16) -#define GMAC_PHYIF_CTRLSTATUS_SPEED GENMASK(18, 17) -#define GMAC_PHYIF_CTRLSTATUS_SPEED_SHIFT 17 -#define GMAC_PHYIF_CTRLSTATUS_LNKSTS BIT(19) -#define GMAC_PHYIF_CTRLSTATUS_JABTO BIT(20) -#define GMAC_PHYIF_CTRLSTATUS_FALSECARDET BIT(21) -/* LNKMOD */ -#define GMAC_PHYIF_CTRLSTATUS_LNKMOD_MASK 0x1 -/* LNKSPEED */ -#define GMAC_PHYIF_CTRLSTATUS_SPEED_125 0x2 -#define GMAC_PHYIF_CTRLSTATUS_SPEED_25 0x1 -#define GMAC_PHYIF_CTRLSTATUS_SPEED_2_5 0x0 +#define GMAC_PHYIF_CTRLSTATUS_RS_STAT GENMASK(31, 16) extern const struct stmmac_dma_ops dwmac4_dma_ops; extern const struct stmmac_dma_ops dwmac410_dma_ops; diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c index d919fc07c8f1..ec8e94ddf948 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c @@ -14,6 +14,7 @@ #include #include #include +#include #include "stmmac.h" #include "stmmac_pcs.h" #include "dwmac4.h" @@ -758,37 +759,32 @@ static void dwmac4_ctrl_ane(struct stmmac_priv *priv, bool ane, bool srgmi_ral, dwmac_ctrl_ane(priv->ioaddr, GMAC_PCS_BASE, ane, srgmi_ral, loopback); } -/* RGMII or SMII interface */ -static void dwmac4_phystatus(void __iomem *ioaddr, struct stmmac_extra_stats *x) +static void dwmac4_mii_pcs_get_state(struct phylink_pcs *pcs, + struct phylink_link_state *state) { + struct stmmac_pcs *spcs = phylink_pcs_to_stmmac_pcs(pcs); u32 status; - status = readl(ioaddr + GMAC_PHYIF_CONTROL_STATUS); - x->irq_rgmii_n++; + status = readl(spcs->priv->ioaddr + GMAC_PHYIF_CONTROL_STATUS); - /* Check the link status */ - if (status & GMAC_PHYIF_CTRLSTATUS_LNKSTS) { - int speed_value; + dwmac_rs_decode_stat(state, FIELD_GET(GMAC_PHYIF_CTRLSTATUS_RS_STAT, + status)); +} - x->pcs_link = 1; +static const struct phylink_pcs_ops dwmac4_mii_pcs_ops = { + .pcs_config = dwmac_pcs_config, + .pcs_get_state = dwmac4_mii_pcs_get_state, +}; - speed_value = ((status & GMAC_PHYIF_CTRLSTATUS_SPEED) >> - GMAC_PHYIF_CTRLSTATUS_SPEED_SHIFT); - if (speed_value == GMAC_PHYIF_CTRLSTATUS_SPEED_125) - x->pcs_speed = SPEED_1000; - else if (speed_value == GMAC_PHYIF_CTRLSTATUS_SPEED_25) - x->pcs_speed = SPEED_100; - else - x->pcs_speed = SPEED_10; - x->pcs_duplex = (status & GMAC_PHYIF_CTRLSTATUS_LNKMOD_MASK); +static struct phylink_pcs * +dwmac4_phylink_select_pcs(struct stmmac_priv *priv, phy_interface_t interface) +{ + if (priv->hw->pcs & STMMAC_PCS_RGMII || + priv->hw->pcs & STMMAC_PCS_SGMII) + return &priv->hw->mac_pcs.pcs; - pr_info("Link is Up - %d/%s\n", (int)x->pcs_speed, - x->pcs_duplex ? "Full" : "Half"); - } else { - x->pcs_link = 0; - pr_info("Link is Down\n"); - } + return NULL; } static int dwmac4_irq_mtl_status(struct stmmac_priv *priv, @@ -862,8 +858,12 @@ static int dwmac4_irq_status(struct mac_device_info *hw, } dwmac_pcs_isr(ioaddr, GMAC_PCS_BASE, intr_status, x); - if (intr_status & PCS_RGSMIIIS_IRQ) - dwmac4_phystatus(ioaddr, x); + if (intr_status & PCS_RGSMIIIS_IRQ) { + /* TODO Dummy-read to clear the IRQ status */ + readl(ioaddr + GMAC_PHYIF_CONTROL_STATUS); + phylink_pcs_change(&hw->mac_pcs.pcs, false); + x->irq_rgmii_n++; + } return ret; } @@ -1181,6 +1181,7 @@ static void dwmac4_set_hw_vlan_mode(struct mac_device_info *hw) const struct stmmac_ops dwmac4_ops = { .core_init = dwmac4_core_init, .update_caps = dwmac4_update_caps, + .phylink_select_pcs = dwmac4_phylink_select_pcs, .set_mac = stmmac_set_mac, .rx_ipc = dwmac4_rx_ipc_enable, .rx_queue_enable = dwmac4_rx_queue_enable, @@ -1224,6 +1225,7 @@ const struct stmmac_ops dwmac4_ops = { const struct stmmac_ops dwmac410_ops = { .core_init = dwmac4_core_init, .update_caps = dwmac4_update_caps, + .phylink_select_pcs = dwmac4_phylink_select_pcs, .set_mac = stmmac_dwmac4_set_mac, .rx_ipc = dwmac4_rx_ipc_enable, .rx_queue_enable = dwmac4_rx_queue_enable, @@ -1271,6 +1273,7 @@ const struct stmmac_ops dwmac410_ops = { const struct stmmac_ops dwmac510_ops = { .core_init = dwmac4_core_init, .update_caps = dwmac4_update_caps, + .phylink_select_pcs = dwmac4_phylink_select_pcs, .set_mac = stmmac_dwmac4_set_mac, .rx_ipc = dwmac4_rx_ipc_enable, .rx_queue_enable = dwmac4_rx_queue_enable, @@ -1383,5 +1386,10 @@ int dwmac4_setup(struct stmmac_priv *priv) mac->mii.clk_csr_mask = GENMASK(11, 8); mac->num_vlan = dwmac4_get_num_vlan(priv->ioaddr); + mac->mac_pcs.priv = priv; + mac->mac_pcs.pcs_base = priv->ioaddr + GMAC_PCS_BASE; + mac->mac_pcs.pcs.ops = &dwmac4_mii_pcs_ops; + mac->mac_pcs.pcs.neg_mode = true; + return 0; }