From nobody Sun Nov 24 12:52:39 2024 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A3D771CC159; Tue, 5 Nov 2024 14:18:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730816309; cv=none; b=IXDBGb6hSDwAuLdOF/k8wTLiP7o9kjgFr3f3A2keNW5tKk/pVuP8D6RlQxzu7gZogWtiVpufve1lcu25Sik/aHTeVL5KHKwp0/dj484yJe7RWvF8MxuQBZ3BX8jbvDNelcBZ5Y6Jk1RuRzX1hyTuXX0ssCMJw02TcKvx/A34yJA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730816309; c=relaxed/simple; bh=b2XR5Pakav/3MMo/79kII62sHng+0aTMFbd6LpYwJQE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=WIFQlaqgpOmwIufabXA9kfPEywWyn/tcToTFHxLVgmuTmtPYIVRwHeK1xleEnTBf0hoBJYNerE4JYn4wtSrD+72P3Tf4cELYjXDK4LM/HN/V9BC1J3RWUgSxdtHphmkrK7VXxFBQg5NQbew2+lKRZUMpMNymmxiiMMW4JMcZzic= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nYuB6fZ0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="nYuB6fZ0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5C40AC4CED3; Tue, 5 Nov 2024 14:18:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730816309; bh=b2XR5Pakav/3MMo/79kII62sHng+0aTMFbd6LpYwJQE=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=nYuB6fZ0xTQmE5Y9J/sjvdWY4t7Oz0iktzb7nA9F4ruDzYNKHmK1sODDpSptFdfmk GbB6UnPwTvgpYyNwvOlwpsy20KHFyifH6AWorhTgNVypuvo0qRTOPE0jHNBQXEPF3D GQzq+7gXD2ET8Xa3UDLakbnuOhNMgRnEEezhefgO3qJBybZDCqgw7z+FHsLqJ+u9JI c/9a+zijVsDw1mE9JOTJCFRIgvQ5vi5Qbfb57WLT0kd0kiXJUx2jy2Rg3TldFp+pvJ I0ZQJmEkK1Ax86qp7S/5tIQ4HAH2/bJPaPix350np4KftiAwAMBIne+FAMKwLEM06Y D5rNIXp9geCVw== From: Roger Quadros Date: Tue, 05 Nov 2024 16:18:10 +0200 Subject: [PATCH net-next 1/2] net: ethernet: ti: am65-cpsw: update pri_thread_map as per IEEE802.1Q-2004 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241105-am65-cpsw-multi-rx-dscp-v1-1-38db85333c88@kernel.org> References: <20241105-am65-cpsw-multi-rx-dscp-v1-0-38db85333c88@kernel.org> In-Reply-To: <20241105-am65-cpsw-multi-rx-dscp-v1-0-38db85333c88@kernel.org> To: Siddharth Vadapalli , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: linux-omap@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, srk@ti.com, Pekka Varis , Roger Quadros X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2615; i=rogerq@kernel.org; h=from:subject:message-id; bh=b2XR5Pakav/3MMo/79kII62sHng+0aTMFbd6LpYwJQE=; b=owEBbQKS/ZANAwAIAdJaa9O+djCTAcsmYgBnKikuSWkVynddpVzDQcbfGiY0uzntGrTPcoqp/ FLmLzolG52JAjMEAAEIAB0WIQRBIWXUTJ9SeA+rEFjSWmvTvnYwkwUCZyopLgAKCRDSWmvTvnYw k6XzD/9B9agCSwTd8YHk+L42x9il02Kywol4fg7yGFJO+2YfSNqcrAEmnKJ20bbOTDhHBR/YyGv hrEhK3lc2623BkC8b2moHNLNlSdFQj198YyXvOj/LCCdc0IPVRo7UKS3F2rbuQF054fsCwBy8wN efn4uyNV94l3jydwpID95RscFb5rmTEqcAgGWGZRC/x0iNP191F9jtPW/SjaHQixBfAPlgy+WI+ 9p+c0oGj+AlzTAkETAQaA1x1gZQCjxNXyLuz7CaKkSrL8BEe6tC4UGHj2wTd/7xKcTuZhVYJyRU mhIjv2S4+REj0rGRIF5QrcprBYff1bpN0M8IYIX/VJwSNuZDwc0Ot+R/suZfiw7OBimUnqJdcR+ LXYg4ilCgtxIR0H4SnHtouzsAAjYXPM0+JHKLy3w3s+B+ZpN+MGIl1RfyDamlBozB3zlIqfYldE vYg+McGB10gGmsBAXO1QFB/zKUkOxqdrXOp/bYz7RGD7QOhITnHHxbt4iYQjYquoma4hk3edhbo bavN8NR+mtyg+qiUd+IXL58nPrlKC+wTgpZDX1Ka9N+fIdnufSBEC6d0HWAInGqDsch3Cssywyk sU4UBBUsK3r1FZtpZb3QU1vfM48IFE06nTeoR+bSQZgGbwMKroW2TtO6sAmDIhG3t16KLPgY/Ht QMWu6L4YkIfVSNQ== X-Developer-Key: i=rogerq@kernel.org; a=openpgp; fpr=412165D44C9F52780FAB1058D25A6BD3BE763093 IEEE802.1Q-2004 superseeds IEEE802.1D-2004. Now Priority Code Point (PCP) 2 is no longer at a lower priority than PCP 0. PCP 1 (Background) is still at a lower priority than PCP 0 (Best Effort). Reference: IEEE802.1Q-2004, Standard for Local and metropolitan area networks Table G-2 - Traffic type acronyms Table G-3 - Defining traffic types Signed-off-by: Roger Quadros --- drivers/net/ethernet/ti/cpsw_ale.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/c= psw_ale.c index 8d02d2b21429..7dadd95cadc5 100644 --- a/drivers/net/ethernet/ti/cpsw_ale.c +++ b/drivers/net/ethernet/ti/cpsw_ale.c @@ -1692,26 +1692,29 @@ static void cpsw_ale_policer_reset(struct cpsw_ale = *ale) void cpsw_ale_classifier_setup_default(struct cpsw_ale *ale, int num_rx_ch) { int pri, idx; - /* IEEE802.1D-2004, Standard for Local and metropolitan area networks + /* IEEE802.1Q-2004, Standard for Local and metropolitan area networks * Table G-2 - Traffic type acronyms * Table G-3 - Defining traffic types - * User priority values 1 and 2 effectively communicate a lower - * priority than 0. In the below table 0 is assigned to higher priority - * thread than 1 and 2 wherever possible. + * Also: https://en.wikipedia.org/wiki/IEEE_P802.1p#Priority_levels + * Priority Code Point (PCP) value 1 (Background) communicates a lower + * priority than 0 (Best Effort). In the below table PCP 0 is assigned + * to a higher priority thread than PCP 1 wherever possible. * The below table maps which thread the user priority needs to be * sent to for a given number of threads (RX channels). Upper threads * have higher priority. * e.g. if number of threads is 8 then user priority 0 will map to - * pri_thread_map[8-1][0] i.e. thread 2 + * pri_thread_map[8-1][0] i.e. thread 1 */ - int pri_thread_map[8][8] =3D { { 0, 0, 0, 0, 0, 0, 0, 0, }, + + int pri_thread_map[8][8] =3D { /* BK,BE,EE,CA,VI,VO,IC,NC */ + { 0, 0, 0, 0, 0, 0, 0, 0, }, { 0, 0, 0, 0, 1, 1, 1, 1, }, { 0, 0, 0, 0, 1, 1, 2, 2, }, - { 1, 0, 0, 1, 2, 2, 3, 3, }, - { 1, 0, 0, 1, 2, 3, 4, 4, }, - { 1, 0, 0, 2, 3, 4, 5, 5, }, - { 1, 0, 0, 2, 3, 4, 5, 6, }, - { 2, 0, 1, 3, 4, 5, 6, 7, } }; + { 0, 0, 1, 1, 2, 2, 3, 3, }, + { 0, 0, 1, 1, 2, 2, 3, 4, }, + { 1, 0, 2, 2, 3, 3, 4, 5, }, + { 1, 0, 2, 3, 4, 4, 5, 6, }, + { 1, 0, 2, 3, 4, 5, 6, 7 } }; =20 cpsw_ale_policer_reset(ale); =20 --=20 2.34.1 From nobody Sun Nov 24 12:52:39 2024 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 EF61F1CC159; Tue, 5 Nov 2024 14:18:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730816313; cv=none; b=T+ru/JX8w+NMGnFsoCP/Yv61vX2OBmBup8IEjDDxWGukTLqYM3/aeOQn27hqAQvuyktNRB0KVB8errHIV1xz8/NI57Ict3Wi4K+axS6xDtIqLN2JOI/fQTy6YgFhSaxOtbMKWR0utBOwsrUhaWGnQ5MDVuphxqgMU5IBA7FvPGs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730816313; c=relaxed/simple; bh=NrEV4iAZN0aliHTzyP3alx8+mfS5kV8sLdO0OPZy9zY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=IIy/wqR4arx3ADCfdY7l/j0+Vd6vzfOzTF26DBQrHUiKBMg/bhrz/zgX/kuZaFG/prChZ+6miE6/NK+PUmCPpiG7vEdGAr+wHCgfT9sIXj3a8qmCFtuEexdiWVEc0D2qTZIvQwuvPI8E/ymFePNstboCOWbPeS/4FfWwh+gwf9g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SgHL1rEu; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="SgHL1rEu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A9F5CC4CECF; Tue, 5 Nov 2024 14:18:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730816312; bh=NrEV4iAZN0aliHTzyP3alx8+mfS5kV8sLdO0OPZy9zY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=SgHL1rEusclIvRylQVHlw+BAIKGdQQlyGM6ZIFuAKxzbJ/6xVMYta9ASqZHOHtzDv PLphr7Oid5ZIm7wCv217mxQXYrDMQ6g4UVpLtcAk2DJcl/rlENHhrXimD02ddT7wPB sqIJRkONNBR5NX3Fj5aBzzaF2lROWs0wFtoqLDcvskO9f2hjatJce6ZLZDRAKZXuMX pTXwsgABd7WmAmHS+EjCoRoItPiAGbQokNlwb/ezk6m+pS0jOW+mmR1liO3UQdT/KD uI4+Gk4vSHurxpbOka9EWfa49lkp291G8xi45y5ilU4SWfvbGm07AZmxIhr9+KbBm9 l4jiyJvu1gzew== From: Roger Quadros Date: Tue, 05 Nov 2024 16:18:11 +0200 Subject: [PATCH net-next 2/2] net: ethernet: ti: am65-cpsw: enable DSCP to priority map for RX Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241105-am65-cpsw-multi-rx-dscp-v1-2-38db85333c88@kernel.org> References: <20241105-am65-cpsw-multi-rx-dscp-v1-0-38db85333c88@kernel.org> In-Reply-To: <20241105-am65-cpsw-multi-rx-dscp-v1-0-38db85333c88@kernel.org> To: Siddharth Vadapalli , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman Cc: linux-omap@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, srk@ti.com, Pekka Varis , Roger Quadros X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=3364; i=rogerq@kernel.org; h=from:subject:message-id; bh=NrEV4iAZN0aliHTzyP3alx8+mfS5kV8sLdO0OPZy9zY=; b=owEBbQKS/ZANAwAIAdJaa9O+djCTAcsmYgBnKikumLdHtahFOh9xQzDkn+wgNGej/VIF9qHfp qIVLCTaxsGJAjMEAAEIAB0WIQRBIWXUTJ9SeA+rEFjSWmvTvnYwkwUCZyopLgAKCRDSWmvTvnYw k9y/EAC/6GPMN2es35uVl3P8XaupweEtL1EY/+WKJX/hR3qLRiWl1UB4vF3ZJzWxwQI+zQ/jakK fYyc7iE1X/Ai50xVjYlU9j4PlZ5AWJ0KkJzMu7Sh22D+0ZgIJN8PCDJdAARwPNkwsGku19PcQCy +4fip6lWrTr4jrB0wknOsWSMG7crOBHUxdUOKfZQgFU4wC+dGwncNeld8r2/Vj0mqOfN6ieDUNx 46oZiu1rE0S/ffRZNRBBan0CBat0Q0LZ/roTZKzVj6kN6ikmLihfBxv/KiWypNytS5YmgB9JAhy WkrAEd7/m1Kf6yKyb9LL96Gt+iy2/pN8YZ4H+zlwETr8rx9cTKZhcUPf7A9sZ9QjTH5QoiSDi9R iikb6WZ28Y8wimYNmwVGxXQbYE7ccgnkz+18mWgc1SZ/S5KuIRHCRmxNQFNAetK5AP41WXam8nf zBE6uDkmx5HtKVLjaeT1TELLaHl3f9PRujpTL+MBH3eAg2a9iEhGu/I8pG3TDC0jbs34D9bxE64 r737XBgJGCqQmmxeAGlAnvtMOqlJLILeKSzN5DhHVrdoiuKDLg5tnoY5OPCVUOkoS3w/XLVNSYQ feb8Oxn8I8PGRjekn7Imi7gebQMgCmRB3RTlMUr+/Zder0yq/kHOCTBzVepKu7O/EryhGMj5znS pZ/qLo7bkz8WK1A== X-Developer-Key: i=rogerq@kernel.org; a=openpgp; fpr=412165D44C9F52780FAB1058D25A6BD3BE763093 AM65 CPSW hardware can map the 6-bit DSCP/TOS field to appropriate priority queue via DSCP to Priority mapping registers (CPSW_PN_RX_PRI_MAP_REG). We use the upper 3 bits of the DSCP field that indicate IP Precedence to map traffic to 8 priority queues. Signed-off-by: Roger Quadros --- drivers/net/ethernet/ti/am65-cpsw-nuss.c | 50 ++++++++++++++++++++++++++++= ++++ 1 file changed, 50 insertions(+) diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/etherne= t/ti/am65-cpsw-nuss.c index 0520e9f4bea7..65fbf6727e02 100644 --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c @@ -71,6 +71,8 @@ #define AM65_CPSW_PORT_REG_RX_PRI_MAP 0x020 #define AM65_CPSW_PORT_REG_RX_MAXLEN 0x024 =20 +#define AM65_CPSW_PORTN_REG_CTL 0x004 +#define AM65_CPSW_PORTN_REG_DSCP_MAP 0x120 #define AM65_CPSW_PORTN_REG_SA_L 0x308 #define AM65_CPSW_PORTN_REG_SA_H 0x30c #define AM65_CPSW_PORTN_REG_TS_CTL 0x310 @@ -94,6 +96,10 @@ /* AM65_CPSW_PORT_REG_PRI_CTL */ #define AM65_CPSW_PORT_REG_PRI_CTL_RX_PTYPE_RROBIN BIT(8) =20 +/* AM65_CPSW_PN_REG_CTL */ +#define AM65_CPSW_PN_REG_CTL_DSCP_IPV4_EN BIT(1) +#define AM65_CPSW_PN_REG_CTL_DSCP_IPV6_EN BIT(2) + /* AM65_CPSW_PN_TS_CTL register fields */ #define AM65_CPSW_PN_TS_CTL_TX_ANX_F_EN BIT(4) #define AM65_CPSW_PN_TS_CTL_TX_VLAN_LT1_EN BIT(5) @@ -176,6 +182,49 @@ static void am65_cpsw_port_set_sl_mac(struct am65_cpsw= _port *slave, writel(mac_lo, slave->port_base + AM65_CPSW_PORTN_REG_SA_L); } =20 +#define AM65_CPSW_DSCP_MAX GENMASK(5, 0) +#define AM65_CPSW_PRI_MAX GENMASK(2, 0) +static int am65_cpsw_port_set_dscp_map(struct am65_cpsw_port *slave, u8 ds= cp, u8 pri) +{ + int reg_ofs; + int bit_ofs; + u32 val; + + if (dscp > AM65_CPSW_DSCP_MAX) + return -EINVAL; + + if (pri > AM65_CPSW_PRI_MAX) + return -EINVAL; + + reg_ofs =3D (dscp / 8) * 4; /* reg offset to this dscp */ + bit_ofs =3D 4 * (dscp % 8); /* bit offset to this dscp */ + val =3D readl(slave->port_base + AM65_CPSW_PORTN_REG_DSCP_MAP + reg_ofs); + val &=3D ~(AM65_CPSW_PRI_MAX << bit_ofs); /* clear */ + val |=3D pri << bit_ofs; /* set */ + writel(val, slave->port_base + AM65_CPSW_PORTN_REG_DSCP_MAP + reg_ofs); + val =3D readl(slave->port_base + AM65_CPSW_PORTN_REG_DSCP_MAP + reg_ofs); + + return 0; +} + +static void am65_cpsw_port_enable_dscp_map(struct am65_cpsw_port *slave) +{ + int dscp, pri; + u32 val; + + /* Map IP Precedence field to Priority */ + for (dscp =3D 0; dscp <=3D AM65_CPSW_DSCP_MAX; dscp++) { + pri =3D dscp >> 3; /* Extract IP Precedence */ + am65_cpsw_port_set_dscp_map(slave, dscp, pri); + } + + /* enable port IPV4 and IPV6 DSCP for this port */ + val =3D readl(slave->port_base + AM65_CPSW_PORTN_REG_CTL); + val |=3D AM65_CPSW_PN_REG_CTL_DSCP_IPV4_EN | + AM65_CPSW_PN_REG_CTL_DSCP_IPV6_EN; + writel(val, slave->port_base + AM65_CPSW_PORTN_REG_CTL); +} + static void am65_cpsw_sl_ctl_reset(struct am65_cpsw_port *port) { cpsw_sl_reset(port->slave.mac_sl, 100); @@ -921,6 +970,7 @@ static int am65_cpsw_nuss_ndo_slave_open(struct net_dev= ice *ndev) common->usage_count++; =20 am65_cpsw_port_set_sl_mac(port, ndev->dev_addr); + am65_cpsw_port_enable_dscp_map(port); =20 if (common->is_emac_mode) am65_cpsw_init_port_emac_ale(port); --=20 2.34.1