From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (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 836F636D51E; Wed, 27 May 2026 14:49:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779893393; cv=none; b=gCRaUvRTH3tyNnhXmUTJAeLKAlKYdDRTzBGL16EjQtDS/+eBDRE690dKqhVHir0ND6IQGvHTUhD7EBNEzTSmGioH/Qb6cfsXVCXWyOaMPw7yTwpdVss/e6jrRAV59oOEyw8oB1JHPURMhKTYaOKger7mcTT6ZO1+b+kN4CG3I44= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779893393; c=relaxed/simple; bh=H8hNEEqJHjPcYB7M/cSefTmLbzjQ116GNccdzyh61SA=; h=From:Subject:Date:Message-ID:MIME-Version:Content-Type:To:CC; b=fkZTwPd9V8eQpT63hXW3949yEXD2Fr2FlToz0sIK+ehrGDv9W/GNxCgXu7KT0re6sU/IDnUrf/9bpBQWCgbdjXN+srUWgST05S3WkmUPT7F5hyr0YjdeOdI1G5kpnUC0Qav4VxRHQp+cTvEvDXaFusYbSBUkEFtGkulWj+A8PF4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=o+T2EAzM; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="o+T2EAzM" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1779893391; x=1811429391; h=from:subject:date:message-id:mime-version: content-transfer-encoding:to:cc; bh=H8hNEEqJHjPcYB7M/cSefTmLbzjQ116GNccdzyh61SA=; b=o+T2EAzMOec8M2NgvfK82rlFU9W1fPLmtuWySpCSwdYMka67EMXvCBKY narhW+gI6zvTgB38Bm1V6PBX48X19VHnKf6vRhLY3+r1F2QQ1sM79qguG cx1tbUrLthfhwz7LGD6we/s68a3NYpXaF6REE3UzWrO/1TaDWoEAZzm8K s9sgCCVnkJjcZpcc1XIZGffUT1QBll5OL9dijRiFZo1/DFfg42pPX+eHA Fh0pxa8YaUlWaRzQoHC26CDlGXXwbaEqeGnJHB1R1tASnYyGeoYJtLusY yah7CW/q+BLRuAv30rlg8/kChRMd270lpf62L5X+8M4zJlVXi0Xy17DN8 Q==; X-CSE-ConnectionGUID: eCE8QnKmQdGcVYr1sRuspQ== X-CSE-MsgGUID: vPJJQyAaQHqaqyLto2Q37g== X-IronPort-AV: E=Sophos;i="6.24,171,1774335600"; d="scan'208";a="67003296" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 27 May 2026 07:49:50 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Wed, 27 May 2026 07:49:49 -0700 Received: from [127.0.0.1] (10.10.85.11) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Wed, 27 May 2026 07:49:46 -0700 From: =?utf-8?q?Jens_Emil_Schulz_=C3=98stergaard?= Subject: [PATCH net-next v6 0/9] net: dsa: add DSA support for the LAN9645x switch chip family Date: Wed, 27 May 2026 16:49:15 +0200 Message-ID: <20260527-dsa_lan9645x_switch_driver_base-v6-0-4d409ae64f3c@microchip.com> 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: 8bit X-B4-Tracking: v=1; b=H4sIAGsEF2oC/43QzWrEIBQF4FcZXNeiXjVmVn2PUoK/jdAxgwabM uTda7OZoQQyy8OB71zuDRWfoy/ofLqh7GsscUotyJcTsqNOnx5H1zJihEnCKMGu6OFLp15ysQz lO852HFyO1efB6OIxUGZMsNB5Z1BTrtmHuGwL7yj5GSe/zOijNWMs85R/tulKt35bAQKHK5Vig k0IymoKvQzi7RJtnuwYr692umx+ZQ8m48cma2boBOEeDJGK7plwN/kT36jQTK2dVaIXQKTbM/m DCU+Y/O9OaiQhImhluj1T3E1B1bEpmtlLFUwAHoKG/+a6rr+elfX6LAIAAA== To: , Andrew Lunn , "Vladimir Oltean" , "David S. Miller" , "Eric Dumazet" , Jakub Kicinski , Paolo Abeni , Simon Horman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Woojung Huh , Russell King , Steen Hegelund , Daniel Machon CC: , , , =?utf-8?q?Jens_Emil_Schulz_=C3=98stergaard?= X-Mailer: b4 0.15-dev This series provides the Microchip LAN9645X Switch driver. The LAN9645x is a family of chips with ethernet switch functionality and multiple peripheral functions. The switch delivers up to 9 ethernet ports and 12 Gbps switching bandwidth. The switch chip has 5 integrated copper PHYs, support for 2x RGMII interfaces, 2x SGMII and one QSGMII interface. The switch chip is from the same design architecture family as ocelot and lan966x, and the driver reflects this similarity. However, LAN9645x does not have an internal CPU in any package, and must be driven externally. For register IO it supports interfaces such as SPI, I2C and MDIO. The chip supports a variety of network features such as * Mactable for MDB/FDB functionality * Bridge forwarding offload * VLAN-aware bridging * IGMP/MLD snooping * Link aggregation * PTP timestamping * FRER (802.1CB) * Media Redundancy Protocol * Parallel Redundancy and High-Availability Seamless Redundancy (HSR/PRP) in DANH/DANP mode * Per stream filtering and policing * Shapers such as Credit Based Shaping and Time Aware Shaing * Frame preemption * A TCAM (VCAP) for line-rate frame processing The LAN9645x family consists of the following SKUs: LAN96455F LAN96457F LAN96459F LAN96455S LAN96457S LAN96459S The difference between the SKUs is the number of supported ports (5, 7 or 9) and features supported. The F subfamily supports HSR/PRP and TSN, while the S subfamily does not. The intended way to bind this driver is using a parent MFD driver, responsible for the register IO protocol, and distributing regmaps to child devices. The goal is to use the same approach as the MFD driver in drivers/mfd/ocelot-spi.c. This driver expects to request named regmaps from a parent device. This approach is similar to the DSA driver drivers/net/dsa/ocelot/ocelot_ext.c which supports being driven by an external CPU via SPI with parent device drivers/mfd/ocelot-spi.c. The MFD driver will come in a later series, because there are requirements on the number of child devices before a driver qualifies as a MFD device. Development is done using the LAN966x as a host CPU, running the lan966x swichdev driver, using the EVB-LAN9668 EDS2 board. The datasheet is available here: https://ww1.microchip.com/downloads/aemDocuments/documents/UNG/ProductDocuments/DataSheets/LAN9645xF-Data-Sheet-DS00006065.pdf This series will deliver the following features: * Standalone ports * Bridge forwarding and FDB offloading * VLAN-aware bridge * Stats integration More support will be added at a later stage. Here is a tentative plan of future patches for this DSA driver: * Add LAG support. * Add MDB support. * Add TC matchall mirror support. * Add TC matchall police support. * Add DCB/qos support. * Add simple TC support: mqprio, cbs, tbf, ebf. * Add TC flower filter support. * Add HSR/PRP offloading support. * Add PTP support. * Add TC taprio support. For completeness I include tentative plan of planned patches for LAN9645x peripherals: * Extend pinctrl-ocelot for LAN9645x: https://lore.kernel.org/linux-gpio/20260119-pinctrl_ocelot_extend_support_for_lan9645x-v1-0-1228155ed0ee@microchip.com/ * Add driver for internal PHY: https://lore.kernel.org/netdev/20260123-phy_micrel_add_support_for_lan9645x_internal_phy-v1-1-8484b1a5a7fd@microchip.com/ * MFD driver for managing register IO protocol and child device initialization. * Extend pinctrl-microchip-sgpio for LAN9645x support. * Extend i2c_designware for LAN9645x support. * Add driver for outbound interrupt controller. * Add serdes driver for lan9645x. Signed-off-by: Jens Emil Schulz Østergaard --- Changes in v6: - Individual patches mention specific v6 changes - Rebased on net-next, bumping DSA_TAG_PROTO_LAN9645X_VALUE to 34 - Link to v5: https://lore.kernel.org/r/20260518-dsa_lan9645x_switch_driver_base-v5-0-968fbf34ffa3@microchip.com Changes in v5: - Individual patches mention specific v5 changes - Undo offset fix in postpull_rcsum. The original logic was correct for CHECKSUM_COMPLETE host NICs - Use __always_inline in lan9645x_ifh_{get,set} - remove double space after = in set_merge_mask - remove unused fields dd_dis and tsn_dis, and add SKU supported port validation during setup - phylink: remove MAC_2500FD - phylink: add comment about empty supported_interfaces for port 5-6. - phylink: fix 2:1 rgmii port muxing for port module 4 and 7 to be fully dynamic and validate requested mux settings. - phylink: add comment about 2:1 rgmii port muxing for port module 4 and 7. - rx/tx-internal-delay-ps checked against supported 2ns value - init lan9645x->npi = -1 at probe and check port < 0 in npi_deinit - use ds->ageing_time_max - use packed p->host_flood_req for atomic r/w - fix typo in set_ageing_time comment - include lan9645x->bridge deref under lock in brige_join - switch -EBUSY to -EINVAL for vlan add/del in the reserved range. - remove reserved HSR vlan - lan9645x_mac_init returns error on table init timeout - add comment about skipping LOCKED entries on fdb dump - skip igmp/mld redir for npi port - make lan9645x_stats_init void - add SCNT_TX_BUFDROP to tx_dropped - change rmon range {0,64} -> {64, 64}. Runt frames counted elsewhere. - remove rx_crc, rx_symbol_err from rx_packets, as they are already counted in SZ_* buckets. - add defensive cancel_delayed_work_sync in stats_free - Link to v4: https://lore.kernel.org/r/20260430-dsa_lan9645x_switch_driver_base-v4-0-f1b6005fa8b7@microchip.com Changes in v4: - v3 was deferred, but I made some changes based on the Sashiko review - Individual patches mention specific v4 changes - Fix offset in postpull_rcsum so prefix eth header is cleared, not actual eth header, so tag driver works with CHECKSUM_COMPLETE host NICs - Fix untagged rx on vlan aware port with pvid - Add comment to QSYS_RES_CFG configuration - Phylink_mac_prepare: fix to make sure we can dynamically change rgmii on port 4 - Move ports allocation to probe - tag_npi_setup: reject cascaded setups - Skip WARN_ON in lan9645x_to_port - set_host_flood changed to per port work to coalesce values and skip atomic allocations - Fix clear HOST_PVID vlan membership when a port joins a bridge. - Explicit default value write to tag type register for untagged frames - Use lan_rmw for ANA_DROP_CFG - Add comment for error path in lan9645x_vlan_hw_wr - Remove mac_entries list and just do direct IO to mac table from fdb_add/fdb_del. - Clean up fresh mdb when hw mac table write fails. - Remove rx_uc and tx_uc from ethtool stats list, as they are derivable from the eth-mac group - Split stats_init into stats_alloc and stats_init, use alloc in probe and init in dsa_setup - Link to v3: https://lore.kernel.org/r/20260410-dsa_lan9645x_switch_driver_base-v3-0-aadc8595306d@microchip.com Changes in v3: - Individual patches mention specific v3 changes. - Add guard before vlan_remove_tag on xmit - Add pskb_may_pull checks on rx - Remove additionalProperties: true in bindings - Remove unnecessary | from description in bindings - Change top level $ref to dsa.yaml#/$defs/ethernet-ports - Use ethernet-ports and ethernet-port - Move ethernet-ports under properties instead of patternProperties - Move unevaluatedProperties: false after $ref - Update bindings example to use ethernet-ports and ethernet-port - Move DEV_MAC_TAGS_CFG to port setup, instead of vlan config, so vlan overhead is always included in port frame maxlen calculation. - Remove code disabling ipv6 on conduit - Use of_property_read_u32 for {rx,tx}-internal-delay-ps - Use dsa_user_ports(ds) instead of GENMASK(lan9645x->num_phys_ports - 1, 0) as base flood mask. - Add comment explaining obey vlan - Allow disabling aging with explicit zero parameters. - Fix non-forwarding STP states in bridge fwd calculation. - Restore host flood state on bridge leave. - Avoid mac_entry dealloc when mac table writes fail. - Avoid mdb_entry dealloc when mac table writes fail. - Dealloc mac_entries on deinit. - Dealloc mdb_entries on deinit. - Link to v2: https://lore.kernel.org/r/20260324-dsa_lan9645x_switch_driver_base-v2-0-f7504e3b0681@microchip.com Changes in v2: - Individual patches have specific v2 changes. - Ran DSA, and std counters, selftests, which prompted several changes. The following selftests pass, except for some expected failures: - bridge_vlan_aware.sh - bridge_vlan_unaware.sh - bridge_vlan_mcast.sh - no_forwarding.sh - bridge_mdb.sh - bridge_mld.sh - test_fdb_stress_test.sh - .../drivers/net/hw/ethtool_rmon.sh - .../drivers/net/hw/ethtool_std_stats.sh (from Ioana's series) - Added new patch for MDB management, as this was required for selftests. - Added port_set_host_flood to enable unknown traffic to standalone during promisc/ALL_MULTI (selftests). - Remove the dubugfs. - Link to v1: https://lore.kernel.org/r/20260303-dsa_lan9645x_switch_driver_base-v1-0-bff8ca1396f5@microchip.com --- Jens Emil Schulz Østergaard (9): net: dsa: add tag driver for LAN9645X dt-bindings: net: lan9645x: add LAN9645X switch bindings net: dsa: lan9645x: add autogenerated register macros net: dsa: lan9645x: add basic dsa driver for LAN9645X net: dsa: lan9645x: add bridge support net: dsa: lan9645x: add vlan support net: dsa: lan9645x: add mac table integration net: dsa: lan9645x: add mdb management net: dsa: lan9645x: add port statistics .../net/dsa/microchip,lan96455s-switch.yaml | 111 ++ MAINTAINERS | 10 + drivers/net/dsa/Kconfig | 2 + drivers/net/dsa/microchip/Makefile | 1 + drivers/net/dsa/microchip/lan9645x/Kconfig | 11 + drivers/net/dsa/microchip/lan9645x/Makefile | 12 + drivers/net/dsa/microchip/lan9645x/lan9645x_mac.c | 306 ++++ drivers/net/dsa/microchip/lan9645x/lan9645x_main.c | 1021 +++++++++++ drivers/net/dsa/microchip/lan9645x/lan9645x_main.h | 435 +++++ drivers/net/dsa/microchip/lan9645x/lan9645x_mdb.c | 397 ++++ drivers/net/dsa/microchip/lan9645x/lan9645x_npi.c | 83 + .../net/dsa/microchip/lan9645x/lan9645x_phylink.c | 409 +++++ drivers/net/dsa/microchip/lan9645x/lan9645x_port.c | 224 +++ drivers/net/dsa/microchip/lan9645x/lan9645x_regs.h | 1915 ++++++++++++++++++++ .../net/dsa/microchip/lan9645x/lan9645x_stats.c | 929 ++++++++++ .../net/dsa/microchip/lan9645x/lan9645x_stats.h | 279 +++ drivers/net/dsa/microchip/lan9645x/lan9645x_vlan.c | 403 ++++ include/linux/dsa/lan9645x.h | 145 ++ include/net/dsa.h | 2 + net/dsa/Kconfig | 11 + net/dsa/Makefile | 1 + net/dsa/tag_lan9645x.c | 315 ++++ 22 files changed, 7022 insertions(+) --- base-commit: aa064a614efcfa4c300609d1f01134e99a12ad10 change-id: 20260210-dsa_lan9645x_switch_driver_base-312bbfc37edb Best regards, -- Jens Emil Schulz Østergaard