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/ethernet/sfc/falcon/mdio_10g.c | 332 +++++++++++++++++++++++++++++ 1 file changed, 332 insertions(+) create mode 100644 drivers/net/ethernet/sfc/falcon/mdio_10g.c (limited to 'drivers/net/ethernet/sfc/falcon/mdio_10g.c') diff --git a/drivers/net/ethernet/sfc/falcon/mdio_10g.c b/drivers/net/ethernet/sfc/falcon/mdio_10g.c new file mode 100644 index 000000000..540278161 --- /dev/null +++ b/drivers/net/ethernet/sfc/falcon/mdio_10g.c @@ -0,0 +1,332 @@ +// SPDX-License-Identifier: GPL-2.0-only +/**************************************************************************** + * Driver for Solarflare network controllers and boards + * Copyright 2006-2011 Solarflare Communications Inc. + */ +/* + * Useful functions for working with MDIO clause 45 PHYs + */ +#include +#include +#include +#include "net_driver.h" +#include "mdio_10g.h" +#include "workarounds.h" + +unsigned ef4_mdio_id_oui(u32 id) +{ + unsigned oui = 0; + int i; + + /* The bits of the OUI are designated a..x, with a=0 and b variable. + * In the id register c is the MSB but the OUI is conventionally + * written as bytes h..a, p..i, x..q. Reorder the bits accordingly. */ + for (i = 0; i < 22; ++i) + if (id & (1 << (i + 10))) + oui |= 1 << (i ^ 7); + + return oui; +} + +int ef4_mdio_reset_mmd(struct ef4_nic *port, int mmd, + int spins, int spintime) +{ + u32 ctrl; + + /* Catch callers passing values in the wrong units (or just silly) */ + EF4_BUG_ON_PARANOID(spins * spintime >= 5000); + + ef4_mdio_write(port, mmd, MDIO_CTRL1, MDIO_CTRL1_RESET); + /* Wait for the reset bit to clear. */ + do { + msleep(spintime); + ctrl = ef4_mdio_read(port, mmd, MDIO_CTRL1); + spins--; + + } while (spins && (ctrl & MDIO_CTRL1_RESET)); + + return spins ? spins : -ETIMEDOUT; +} + +static int ef4_mdio_check_mmd(struct ef4_nic *efx, int mmd) +{ + int status; + + if (mmd != MDIO_MMD_AN) { + /* Read MMD STATUS2 to check it is responding. */ + status = ef4_mdio_read(efx, mmd, MDIO_STAT2); + if ((status & MDIO_STAT2_DEVPRST) != MDIO_STAT2_DEVPRST_VAL) { + netif_err(efx, hw, efx->net_dev, + "PHY MMD %d not responding.\n", mmd); + return -EIO; + } + } + + return 0; +} + +/* This ought to be ridiculous overkill. We expect it to fail rarely */ +#define MDIO45_RESET_TIME 1000 /* ms */ +#define MDIO45_RESET_ITERS 100 + +int ef4_mdio_wait_reset_mmds(struct ef4_nic *efx, unsigned int mmd_mask) +{ + const int spintime = MDIO45_RESET_TIME / MDIO45_RESET_ITERS; + int tries = MDIO45_RESET_ITERS; + int rc = 0; + int in_reset; + + while (tries) { + int mask = mmd_mask; + int mmd = 0; + int stat; + in_reset = 0; + while (mask) { + if (mask & 1) { + stat = ef4_mdio_read(efx, mmd, MDIO_CTRL1); + if (stat < 0) { + netif_err(efx, hw, efx->net_dev, + "failed to read status of" + " MMD %d\n", mmd); + return -EIO; + } + if (stat & MDIO_CTRL1_RESET) + in_reset |= (1 << mmd); + } + mask = mask >> 1; + mmd++; + } + if (!in_reset) + break; + tries--; + msleep(spintime); + } + if (in_reset != 0) { + netif_err(efx, hw, efx->net_dev, + "not all MMDs came out of reset in time." + " MMDs still in reset: %x\n", in_reset); + rc = -ETIMEDOUT; + } + return rc; +} + +int ef4_mdio_check_mmds(struct ef4_nic *efx, unsigned int mmd_mask) +{ + int mmd = 0, probe_mmd, devs1, devs2; + u32 devices; + + /* Historically we have probed the PHYXS to find out what devices are + * present,but that doesn't work so well if the PHYXS isn't expected + * to exist, if so just find the first item in the list supplied. */ + probe_mmd = (mmd_mask & MDIO_DEVS_PHYXS) ? MDIO_MMD_PHYXS : + __ffs(mmd_mask); + + /* Check all the expected MMDs are present */ + devs1 = ef4_mdio_read(efx, probe_mmd, MDIO_DEVS1); + devs2 = ef4_mdio_read(efx, probe_mmd, MDIO_DEVS2); + if (devs1 < 0 || devs2 < 0) { + netif_err(efx, hw, efx->net_dev, + "failed to read devices present\n"); + return -EIO; + } + devices = devs1 | (devs2 << 16); + if ((devices & mmd_mask) != mmd_mask) { + netif_err(efx, hw, efx->net_dev, + "required MMDs not present: got %x, wanted %x\n", + devices, mmd_mask); + return -ENODEV; + } + netif_vdbg(efx, hw, efx->net_dev, "Devices present: %x\n", devices); + + /* Check all required MMDs are responding and happy. */ + while (mmd_mask) { + if ((mmd_mask & 1) && ef4_mdio_check_mmd(efx, mmd)) + return -EIO; + mmd_mask = mmd_mask >> 1; + mmd++; + } + + return 0; +} + +bool ef4_mdio_links_ok(struct ef4_nic *efx, unsigned int mmd_mask) +{ + /* If the port is in loopback, then we should only consider a subset + * of mmd's */ + if (LOOPBACK_INTERNAL(efx)) + return true; + else if (LOOPBACK_MASK(efx) & LOOPBACKS_WS) + return false; + else if (ef4_phy_mode_disabled(efx->phy_mode)) + return false; + else if (efx->loopback_mode == LOOPBACK_PHYXS) + mmd_mask &= ~(MDIO_DEVS_PHYXS | + MDIO_DEVS_PCS | + MDIO_DEVS_PMAPMD | + MDIO_DEVS_AN); + else if (efx->loopback_mode == LOOPBACK_PCS) + mmd_mask &= ~(MDIO_DEVS_PCS | + MDIO_DEVS_PMAPMD | + MDIO_DEVS_AN); + else if (efx->loopback_mode == LOOPBACK_PMAPMD) + mmd_mask &= ~(MDIO_DEVS_PMAPMD | + MDIO_DEVS_AN); + + return mdio45_links_ok(&efx->mdio, mmd_mask); +} + +void ef4_mdio_transmit_disable(struct ef4_nic *efx) +{ + ef4_mdio_set_flag(efx, MDIO_MMD_PMAPMD, + MDIO_PMA_TXDIS, MDIO_PMD_TXDIS_GLOBAL, + efx->phy_mode & PHY_MODE_TX_DISABLED); +} + +void ef4_mdio_phy_reconfigure(struct ef4_nic *efx) +{ + ef4_mdio_set_flag(efx, MDIO_MMD_PMAPMD, + MDIO_CTRL1, MDIO_PMA_CTRL1_LOOPBACK, + efx->loopback_mode == LOOPBACK_PMAPMD); + ef4_mdio_set_flag(efx, MDIO_MMD_PCS, + MDIO_CTRL1, MDIO_PCS_CTRL1_LOOPBACK, + efx->loopback_mode == LOOPBACK_PCS); + ef4_mdio_set_flag(efx, MDIO_MMD_PHYXS, + MDIO_CTRL1, MDIO_PHYXS_CTRL1_LOOPBACK, + efx->loopback_mode == LOOPBACK_PHYXS_WS); +} + +static void ef4_mdio_set_mmd_lpower(struct ef4_nic *efx, + int lpower, int mmd) +{ + int stat = ef4_mdio_read(efx, mmd, MDIO_STAT1); + + netif_vdbg(efx, drv, efx->net_dev, "Setting low power mode for MMD %d to %d\n", + mmd, lpower); + + if (stat & MDIO_STAT1_LPOWERABLE) { + ef4_mdio_set_flag(efx, mmd, MDIO_CTRL1, + MDIO_CTRL1_LPOWER, lpower); + } +} + +void ef4_mdio_set_mmds_lpower(struct ef4_nic *efx, + int low_power, unsigned int mmd_mask) +{ + int mmd = 0; + mmd_mask &= ~MDIO_DEVS_AN; + while (mmd_mask) { + if (mmd_mask & 1) + ef4_mdio_set_mmd_lpower(efx, low_power, mmd); + mmd_mask = (mmd_mask >> 1); + mmd++; + } +} + +/** + * ef4_mdio_set_link_ksettings - Set (some of) the PHY settings over MDIO. + * @efx: Efx NIC + * @cmd: New settings + */ +int ef4_mdio_set_link_ksettings(struct ef4_nic *efx, + const struct ethtool_link_ksettings *cmd) +{ + struct ethtool_link_ksettings prev = { + .base.cmd = ETHTOOL_GLINKSETTINGS + }; + u32 prev_advertising, advertising; + u32 prev_supported; + + efx->phy_op->get_link_ksettings(efx, &prev); + + ethtool_convert_link_mode_to_legacy_u32(&advertising, + cmd->link_modes.advertising); + ethtool_convert_link_mode_to_legacy_u32(&prev_advertising, + prev.link_modes.advertising); + ethtool_convert_link_mode_to_legacy_u32(&prev_supported, + prev.link_modes.supported); + + if (advertising == prev_advertising && + cmd->base.speed == prev.base.speed && + cmd->base.duplex == prev.base.duplex && + cmd->base.port == prev.base.port && + cmd->base.autoneg == prev.base.autoneg) + return 0; + + /* We can only change these settings for -T PHYs */ + if (prev.base.port != PORT_TP || cmd->base.port != PORT_TP) + return -EINVAL; + + /* Check that PHY supports these settings */ + if (!cmd->base.autoneg || + (advertising | SUPPORTED_Autoneg) & ~prev_supported) + return -EINVAL; + + ef4_link_set_advertising(efx, advertising | ADVERTISED_Autoneg); + ef4_mdio_an_reconfigure(efx); + return 0; +} + +/** + * ef4_mdio_an_reconfigure - Push advertising flags and restart autonegotiation + * @efx: Efx NIC + */ +void ef4_mdio_an_reconfigure(struct ef4_nic *efx) +{ + int reg; + + WARN_ON(!(efx->mdio.mmds & MDIO_DEVS_AN)); + + /* Set up the base page */ + reg = ADVERTISE_CSMA | ADVERTISE_RESV; + if (efx->link_advertising & ADVERTISED_Pause) + reg |= ADVERTISE_PAUSE_CAP; + if (efx->link_advertising & ADVERTISED_Asym_Pause) + reg |= ADVERTISE_PAUSE_ASYM; + ef4_mdio_write(efx, MDIO_MMD_AN, MDIO_AN_ADVERTISE, reg); + + /* Set up the (extended) next page */ + efx->phy_op->set_npage_adv(efx, efx->link_advertising); + + /* Enable and restart AN */ + reg = ef4_mdio_read(efx, MDIO_MMD_AN, MDIO_CTRL1); + reg |= MDIO_AN_CTRL1_ENABLE | MDIO_AN_CTRL1_RESTART | MDIO_AN_CTRL1_XNP; + ef4_mdio_write(efx, MDIO_MMD_AN, MDIO_CTRL1, reg); +} + +u8 ef4_mdio_get_pause(struct ef4_nic *efx) +{ + BUILD_BUG_ON(EF4_FC_AUTO & (EF4_FC_RX | EF4_FC_TX)); + + if (!(efx->wanted_fc & EF4_FC_AUTO)) + return efx->wanted_fc; + + WARN_ON(!(efx->mdio.mmds & MDIO_DEVS_AN)); + + return mii_resolve_flowctrl_fdx( + mii_advertise_flowctrl(efx->wanted_fc), + ef4_mdio_read(efx, MDIO_MMD_AN, MDIO_AN_LPA)); +} + +int ef4_mdio_test_alive(struct ef4_nic *efx) +{ + int rc; + int devad = __ffs(efx->mdio.mmds); + u16 physid1, physid2; + + mutex_lock(&efx->mac_lock); + + physid1 = ef4_mdio_read(efx, devad, MDIO_DEVID1); + physid2 = ef4_mdio_read(efx, devad, MDIO_DEVID2); + + if ((physid1 == 0x0000) || (physid1 == 0xffff) || + (physid2 == 0x0000) || (physid2 == 0xffff)) { + netif_err(efx, hw, efx->net_dev, + "no MDIO PHY present with ID %d\n", efx->mdio.prtad); + rc = -EINVAL; + } else { + rc = ef4_mdio_check_mmds(efx, efx->mdio.mmds); + } + + mutex_unlock(&efx->mac_lock); + return rc; +} -- cgit v1.2.3