From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ... --- drivers/net/mdio/mdio-bcm-iproc.c | 221 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 221 insertions(+) create mode 100644 drivers/net/mdio/mdio-bcm-iproc.c (limited to 'drivers/net/mdio/mdio-bcm-iproc.c') diff --git a/drivers/net/mdio/mdio-bcm-iproc.c b/drivers/net/mdio/mdio-bcm-iproc.c new file mode 100644 index 000000000..77fc970cd --- /dev/null +++ b/drivers/net/mdio/mdio-bcm-iproc.c @@ -0,0 +1,221 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2015 Broadcom Corporation + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define IPROC_GPHY_MDCDIV 0x1a + +#define MII_CTRL_OFFSET 0x000 + +#define MII_CTRL_DIV_SHIFT 0 +#define MII_CTRL_PRE_SHIFT 7 +#define MII_CTRL_BUSY_SHIFT 8 + +#define MII_DATA_OFFSET 0x004 +#define MII_DATA_MASK 0xffff +#define MII_DATA_TA_SHIFT 16 +#define MII_DATA_TA_VAL 2 +#define MII_DATA_RA_SHIFT 18 +#define MII_DATA_PA_SHIFT 23 +#define MII_DATA_OP_SHIFT 28 +#define MII_DATA_OP_WRITE 1 +#define MII_DATA_OP_READ 2 +#define MII_DATA_SB_SHIFT 30 + +struct iproc_mdio_priv { + struct mii_bus *mii_bus; + void __iomem *base; +}; + +static inline int iproc_mdio_wait_for_idle(void __iomem *base) +{ + u32 val; + unsigned int timeout = 1000; /* loop for 1s */ + + do { + val = readl(base + MII_CTRL_OFFSET); + if ((val & BIT(MII_CTRL_BUSY_SHIFT)) == 0) + return 0; + + usleep_range(1000, 2000); + } while (timeout--); + + return -ETIMEDOUT; +} + +static inline void iproc_mdio_config_clk(void __iomem *base) +{ + u32 val; + + val = (IPROC_GPHY_MDCDIV << MII_CTRL_DIV_SHIFT) | + BIT(MII_CTRL_PRE_SHIFT); + writel(val, base + MII_CTRL_OFFSET); +} + +static int iproc_mdio_read(struct mii_bus *bus, int phy_id, int reg) +{ + struct iproc_mdio_priv *priv = bus->priv; + u32 cmd; + int rc; + + rc = iproc_mdio_wait_for_idle(priv->base); + if (rc) + return rc; + + /* Prepare the read operation */ + cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) | + (reg << MII_DATA_RA_SHIFT) | + (phy_id << MII_DATA_PA_SHIFT) | + BIT(MII_DATA_SB_SHIFT) | + (MII_DATA_OP_READ << MII_DATA_OP_SHIFT); + + writel(cmd, priv->base + MII_DATA_OFFSET); + + rc = iproc_mdio_wait_for_idle(priv->base); + if (rc) + return rc; + + cmd = readl(priv->base + MII_DATA_OFFSET) & MII_DATA_MASK; + + return cmd; +} + +static int iproc_mdio_write(struct mii_bus *bus, int phy_id, + int reg, u16 val) +{ + struct iproc_mdio_priv *priv = bus->priv; + u32 cmd; + int rc; + + rc = iproc_mdio_wait_for_idle(priv->base); + if (rc) + return rc; + + /* Prepare the write operation */ + cmd = (MII_DATA_TA_VAL << MII_DATA_TA_SHIFT) | + (reg << MII_DATA_RA_SHIFT) | + (phy_id << MII_DATA_PA_SHIFT) | + BIT(MII_DATA_SB_SHIFT) | + (MII_DATA_OP_WRITE << MII_DATA_OP_SHIFT) | + ((u32)(val) & MII_DATA_MASK); + + writel(cmd, priv->base + MII_DATA_OFFSET); + + rc = iproc_mdio_wait_for_idle(priv->base); + if (rc) + return rc; + + return 0; +} + +static int iproc_mdio_probe(struct platform_device *pdev) +{ + struct iproc_mdio_priv *priv; + struct mii_bus *bus; + int rc; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->base)) { + dev_err(&pdev->dev, "failed to ioremap register\n"); + return PTR_ERR(priv->base); + } + + priv->mii_bus = mdiobus_alloc(); + if (!priv->mii_bus) { + dev_err(&pdev->dev, "MDIO bus alloc failed\n"); + return -ENOMEM; + } + + bus = priv->mii_bus; + bus->priv = priv; + bus->name = "iProc MDIO bus"; + snprintf(bus->id, MII_BUS_ID_SIZE, "%s-%d", pdev->name, pdev->id); + bus->parent = &pdev->dev; + bus->read = iproc_mdio_read; + bus->write = iproc_mdio_write; + + iproc_mdio_config_clk(priv->base); + + rc = of_mdiobus_register(bus, pdev->dev.of_node); + if (rc) { + dev_err(&pdev->dev, "MDIO bus registration failed\n"); + goto err_iproc_mdio; + } + + platform_set_drvdata(pdev, priv); + + dev_info(&pdev->dev, "Broadcom iProc MDIO bus registered\n"); + + return 0; + +err_iproc_mdio: + mdiobus_free(bus); + return rc; +} + +static int iproc_mdio_remove(struct platform_device *pdev) +{ + struct iproc_mdio_priv *priv = platform_get_drvdata(pdev); + + mdiobus_unregister(priv->mii_bus); + mdiobus_free(priv->mii_bus); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int iproc_mdio_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct iproc_mdio_priv *priv = platform_get_drvdata(pdev); + + /* restore the mii clock configuration */ + iproc_mdio_config_clk(priv->base); + + return 0; +} + +static const struct dev_pm_ops iproc_mdio_pm_ops = { + .resume = iproc_mdio_resume +}; +#endif /* CONFIG_PM_SLEEP */ + +static const struct of_device_id iproc_mdio_of_match[] = { + { .compatible = "brcm,iproc-mdio", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, iproc_mdio_of_match); + +static struct platform_driver iproc_mdio_driver = { + .driver = { + .name = "iproc-mdio", + .of_match_table = iproc_mdio_of_match, +#ifdef CONFIG_PM_SLEEP + .pm = &iproc_mdio_pm_ops, +#endif + }, + .probe = iproc_mdio_probe, + .remove = iproc_mdio_remove, +}; + +module_platform_driver(iproc_mdio_driver); + +MODULE_AUTHOR("Broadcom Corporation"); +MODULE_DESCRIPTION("Broadcom iProc MDIO bus controller"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:iproc-mdio"); -- cgit v1.2.3