From nobody Sun Nov 24 03:59:59 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 98F7720EA2B; Thu, 7 Nov 2024 12:29:44 +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=1730982584; cv=none; b=dzKcZu5Y/dNTUKRanDzqzFLhYbbWjzYVcW/LSMmOGW+rYxIzGqQmc/qL9TmC/RlFU4oEP+uIwDm6bjY0X3r6E6cb/uHatsnKVtymXbhxVV//96GakUknyCqiH0UIyX5tdr09J8KJTi2+kyaTwZl76whoCmr21LnvoA7j+vzOqcY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730982584; c=relaxed/simple; bh=HYE0o7h4YzrGMEJvvWA9I99aQMcFA8E5/vep+qX51f8=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=KN1Tudh/6XhMlonX6deOgPTstaFjf4QZVW73dB/37nai0ZhnbLsv8MHF/lM8GhLiO4lMeZbXZELOoEhstlaQoQnFCmepce5xiqqxAnuiOTaPCRs6tdV3G95XV68NEqbfn6rnp7qlmJRl1a4hq9TeorByTn4/s/GuKzcS/xAAAn0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=RqiJdeb/; 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="RqiJdeb/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E657C4CED8; Thu, 7 Nov 2024 12:29:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730982584; bh=HYE0o7h4YzrGMEJvvWA9I99aQMcFA8E5/vep+qX51f8=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=RqiJdeb/eYkoyUnlqpG33DQZFIXgIJEOH4SndWthoAVKUmQ0SgMQNYsyWROPdoBHm JKroqnMGl87QiBI9KxWHMGWlVSV2LgHZ1/1RJ9TF94cz0SIuPQIRQq4rBd1LnpWOZy QfTTHP88IyMDJ/RX/BzWHyab54aCZj0hT2a4QeGm+9Tz4Cjw6lPWClcUliCp3+MJn0 9z2hHJkjLliXNM3CmRRWhclhQFP/oXfNn2JWBcNPLgRsKUSNzmXqlT0YzTixkY+7oh yIvYveA8tphAPDeEvby2d951UIbyDMjZ0wKBIPdRKguA7UpiUXPMvP93u0qNHmZSB2 9nwOCsGizY5fg== From: Roger Quadros Date: Thu, 07 Nov 2024 14:29:29 +0200 Subject: [PATCH net-next v2 1/2] net: ethernet: ti: am65-cpsw: update pri_thread_map as per IEEE802.1Q-2014 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: <20241107-am65-cpsw-multi-rx-dscp-v2-1-9e9cd1920035@kernel.org> References: <20241107-am65-cpsw-multi-rx-dscp-v2-0-9e9cd1920035@kernel.org> In-Reply-To: <20241107-am65-cpsw-multi-rx-dscp-v2-0-9e9cd1920035@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=2927; i=rogerq@kernel.org; h=from:subject:message-id; bh=HYE0o7h4YzrGMEJvvWA9I99aQMcFA8E5/vep+qX51f8=; b=owEBbQKS/ZANAwAIAdJaa9O+djCTAcsmYgBnLLKxhkAuKcBmCjcgRA9KUkOz7LoNtEbxpP05W mXSOLBkqwOJAjMEAAEIAB0WIQRBIWXUTJ9SeA+rEFjSWmvTvnYwkwUCZyyysQAKCRDSWmvTvnYw k0BWD/9QrGILbsNstVCEarNYG8xXxeBcsnzxHAttg9YiJqkgzSpQ5KFWWJHio8Dqn782TriT5OB PBOmAZyE2ZYIfj7RaFqqLgCWGtdIx6r1Xnm4bW4nZHdp6SbOOBNmvdLZ+NvEQVB3gsQrfWZfHHE YBBF+dFwaNcKDB0pnHPB27J4++ZghGJW8RI+7cWlFj3nHl3BnsGq03c9gRzyEazYpavqVDlX8uZ X4VolKikrKIcMxBtfJ1SYwcUDqZNBB/RhZpp4prDj8QSPBHXIDxcvXkHVcBBCBHxy9P6Rof2qCL w+Z0klrgCdn+by09uRsH92FCUnNAIoH8qYHw8+VTICXxuoPESZKQdWUN89kAV2964DOmoQHGy08 5aqu4IvfnK88jnSKS256f3CBXnWzGCFODkIKrDbN8H3BIJBKgQduyUwE0JXiQzQKAou0EQp904u iME9WRD4SJz6S/60nAJcoyzsq74yZBzFtA8PKWAXk3IQimYeOll7XU5mSN1Z770gruXcDDkVY6+ YIr3z4Nm+fcLzXHWddiYEAvLiQhM8CGmnh4FxBtM4iQuD3AaZ2T01mgwKvlVThiFG3g9dOjAKaz H3L0nkkAabWRVPX2Vx23xNkCH0aPydcmZ33/OjTsZ+UJOoI0ZmBw/OIOQ+wDPPXq7mBLFLuoF05 5ao3Fl6ihk93SSA== X-Developer-Key: i=rogerq@kernel.org; a=openpgp; fpr=412165D44C9F52780FAB1058D25A6BD3BE763093 IEEE802.1Q-2014 supersedes 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-2014, Standard for Local and metropolitan area networks Table I-2 - Traffic type acronyms Table I-3 - Defining traffic types Signed-off-by: Roger Quadros Reviewed-by: Siddharth Vadapalli --- drivers/net/ethernet/ti/cpsw_ale.c | 36 ++++++++++++++++++++++------------= -- 1 file changed, 22 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/ti/cpsw_ale.c b/drivers/net/ethernet/ti/c= psw_ale.c index 8d02d2b21429..9f79056b3f48 100644 --- a/drivers/net/ethernet/ti/cpsw_ale.c +++ b/drivers/net/ethernet/ti/cpsw_ale.c @@ -1692,26 +1692,34 @@ 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 - * 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. - * The below table maps which thread the user priority needs to be + + /* Reference: + * IEEE802.1Q-2014, Standard for Local and metropolitan area networks + * Table I-2 - Traffic type acronyms + * Table I-3 - Defining traffic types + * Section I.4 Traffic types and priority values, states: + * "0 is thus used both for default priority and for Best Effort, and + * Background is associated with a priority value of 1. This means + * that the value 1 effectively communicates a lower priority than 0." + * + * In the table below, Priority Code Point (PCP) 0 is assigned + * to a higher priority thread than PCP 1 wherever possible. + * The table maps which thread the PCP traffic 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 03:59:59 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 EC7062101A4; Thu, 7 Nov 2024 12:29:47 +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=1730982588; cv=none; b=h1pbqmr/i7mfIXX6WF8Rh9+n8gz/BgVPxUS9Xd0DrMyIGNME1QVCrOgspCblw8sC95NjC1kd4cnxlwn+Ab+eaJxrcTpH6ACuupI43wT/9nRRvYKbCDUkHX9gc+YDe8eUveOvHQ0a4mXlSuRjNsycBOgABLmjc6X3vOpIUgABVBQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730982588; c=relaxed/simple; bh=NrEV4iAZN0aliHTzyP3alx8+mfS5kV8sLdO0OPZy9zY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Mk14a8Q2gSrfUrufhkRMLzQSIXCo+MS3uVprOX7R+kwH5v+uKPBqFNcpysI9PGn8/zr5SjugSq65kbELegiJLS13vhFv8pe9rMF7Jfi/XC2EKjFZNwZp3Zc7mx/1/SMPKHLsLvXO8KOUdTdBSfxOGRjEXtVJvvKyhOINFW9nLu4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JLt1LscA; 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="JLt1LscA" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A5637C4CED2; Thu, 7 Nov 2024 12:29:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730982587; bh=NrEV4iAZN0aliHTzyP3alx8+mfS5kV8sLdO0OPZy9zY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=JLt1LscAzbLbz4jXQOAxppFBWpowV+pDW2x6NkVQeFkEuPYugn8FIiwZhzdxfxFeW HzhR1KM8iT0OsAZ8BbgwYw/ANqTnGMCQOxVpeIDk8LuiMPA0k9D3uoSK9otgCquIHS 30F90ArfTx/PdTokvY1DtOL9Du2bPgtKvpvQ/CaXJRSZQOKgBqpw7Bkd3inRLQ76tG 1VZdWxGLrLAdrDcZY0UsdG/tE/NUb6TCbWcxyatIFWpHrb9JSCAquU9U+tePbFmXaB rCi3fBbFE2xFtwRp2hrvLug7fENjgzwXSlzjS3U/xaJpUZ115nA6/AgvCacVRveMEN /isp1nQRqCm1Q== From: Roger Quadros Date: Thu, 07 Nov 2024 14:29:30 +0200 Subject: [PATCH net-next v2 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: <20241107-am65-cpsw-multi-rx-dscp-v2-2-9e9cd1920035@kernel.org> References: <20241107-am65-cpsw-multi-rx-dscp-v2-0-9e9cd1920035@kernel.org> In-Reply-To: <20241107-am65-cpsw-multi-rx-dscp-v2-0-9e9cd1920035@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+djCTAcsmYgBnLLKx3sRmt/4x9giNnh1pnVhDarGvXWedi/5k8 0rxZdpLLpqJAjMEAAEIAB0WIQRBIWXUTJ9SeA+rEFjSWmvTvnYwkwUCZyyysQAKCRDSWmvTvnYw k0PbD/wJm+z+1i5O7IO8HfrlRGQ4ZkkgAXW387plEg2xN9CsLML5cFzsDJXuQSRfqm0DVmiB4B0 7fKvYwigtS6YxpK3DkhNGK6CYVXB85exGSE9ak9LT5M7dUjpkrUWxJdFFiFTnVkuA0lGd4IWM4y 2gwYCLvrj8hJSNsPjUUu3ZUGM/Bqfou3yMTH+Rhl9YnnIZaL9TEYxofsEMKWnvDcsu8DdwcmzWi XIMixFHVrGsVORaYq1l2zjXbS5fubFagQ2YPzJQWfkaZbYqdKHEpg8vlojv/tQC8HuHl8K6hpsl WhEPFL7dLpGLR1hLndYiqxjxc4mcoGzxR2t7lHskqBbFy8Sbf2J5o5d3x7ElfteBHuMl0IBh9XV v5HC4N5ThC1ctM/WSI3KNcw/Ly6z7PtwLctbJgFfqvj90kppvMStgkNrWLmy/xUhAocy4HVryiV V4IaUKrDJ4DhKuFUVMco4QwjEw+xndzEKx5wBi8ehjWXC19aZl6mz9r62uNjBMckBn9I6Q8sBy2 uhyS5euhdTopmbG9Tzy9IZ/KuvKhfIhBY0fUnBjPnLob5eouP/4TWcWvtqRLOO3gCZ42b29xaIA YF4vUPiBL/9+qBCEDHM1GEWgUeHxpDbyXCiABiArmx+tqtw5yF1UyoV7Xgje14qoyDjEMaD+TvK idX50VQETRt8DNA== 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