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/intel/igc/igc_base.c | 448 ++++++++++++++++++++++++++++++ 1 file changed, 448 insertions(+) create mode 100644 drivers/net/ethernet/intel/igc/igc_base.c (limited to 'drivers/net/ethernet/intel/igc/igc_base.c') diff --git a/drivers/net/ethernet/intel/igc/igc_base.c b/drivers/net/ethernet/intel/igc/igc_base.c new file mode 100644 index 000000000..a1d815af5 --- /dev/null +++ b/drivers/net/ethernet/intel/igc/igc_base.c @@ -0,0 +1,448 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2018 Intel Corporation */ + +#include + +#include "igc_hw.h" +#include "igc_i225.h" +#include "igc_mac.h" +#include "igc_base.h" +#include "igc.h" + +/** + * igc_reset_hw_base - Reset hardware + * @hw: pointer to the HW structure + * + * This resets the hardware into a known state. This is a + * function pointer entry point called by the api module. + */ +static s32 igc_reset_hw_base(struct igc_hw *hw) +{ + s32 ret_val; + u32 ctrl; + + /* Prevent the PCI-E bus from sticking if there is no TLP connection + * on the last TLP read/write transaction when MAC is reset. + */ + ret_val = igc_disable_pcie_master(hw); + if (ret_val) + hw_dbg("PCI-E Master disable polling has failed\n"); + + hw_dbg("Masking off all interrupts\n"); + wr32(IGC_IMC, 0xffffffff); + + wr32(IGC_RCTL, 0); + wr32(IGC_TCTL, IGC_TCTL_PSP); + wrfl(); + + usleep_range(10000, 20000); + + ctrl = rd32(IGC_CTRL); + + hw_dbg("Issuing a global reset to MAC\n"); + wr32(IGC_CTRL, ctrl | IGC_CTRL_RST); + + ret_val = igc_get_auto_rd_done(hw); + if (ret_val) { + /* When auto config read does not complete, do not + * return with an error. This can happen in situations + * where there is no eeprom and prevents getting link. + */ + hw_dbg("Auto Read Done did not complete\n"); + } + + /* Clear any pending interrupt events. */ + wr32(IGC_IMC, 0xffffffff); + rd32(IGC_ICR); + + return ret_val; +} + +/** + * igc_init_nvm_params_base - Init NVM func ptrs. + * @hw: pointer to the HW structure + */ +static s32 igc_init_nvm_params_base(struct igc_hw *hw) +{ + struct igc_nvm_info *nvm = &hw->nvm; + u32 eecd = rd32(IGC_EECD); + u16 size; + + size = (u16)((eecd & IGC_EECD_SIZE_EX_MASK) >> + IGC_EECD_SIZE_EX_SHIFT); + + /* Added to a constant, "size" becomes the left-shift value + * for setting word_size. + */ + size += NVM_WORD_SIZE_BASE_SHIFT; + + /* Just in case size is out of range, cap it to the largest + * EEPROM size supported + */ + if (size > 15) + size = 15; + + nvm->type = igc_nvm_eeprom_spi; + nvm->word_size = BIT(size); + nvm->opcode_bits = 8; + nvm->delay_usec = 1; + + nvm->page_size = eecd & IGC_EECD_ADDR_BITS ? 32 : 8; + nvm->address_bits = eecd & IGC_EECD_ADDR_BITS ? + 16 : 8; + + if (nvm->word_size == BIT(15)) + nvm->page_size = 128; + + return 0; +} + +/** + * igc_setup_copper_link_base - Configure copper link settings + * @hw: pointer to the HW structure + * + * Configures the link for auto-neg or forced speed and duplex. Then we check + * for link, once link is established calls to configure collision distance + * and flow control are called. + */ +static s32 igc_setup_copper_link_base(struct igc_hw *hw) +{ + s32 ret_val = 0; + u32 ctrl; + + ctrl = rd32(IGC_CTRL); + ctrl |= IGC_CTRL_SLU; + ctrl &= ~(IGC_CTRL_FRCSPD | IGC_CTRL_FRCDPX); + wr32(IGC_CTRL, ctrl); + + ret_val = igc_setup_copper_link(hw); + + return ret_val; +} + +/** + * igc_init_mac_params_base - Init MAC func ptrs. + * @hw: pointer to the HW structure + */ +static s32 igc_init_mac_params_base(struct igc_hw *hw) +{ + struct igc_dev_spec_base *dev_spec = &hw->dev_spec._base; + struct igc_mac_info *mac = &hw->mac; + + /* Set mta register count */ + mac->mta_reg_count = 128; + mac->rar_entry_count = IGC_RAR_ENTRIES; + + /* reset */ + mac->ops.reset_hw = igc_reset_hw_base; + + mac->ops.acquire_swfw_sync = igc_acquire_swfw_sync_i225; + mac->ops.release_swfw_sync = igc_release_swfw_sync_i225; + + /* Allow a single clear of the SW semaphore on I225 */ + if (mac->type == igc_i225) + dev_spec->clear_semaphore_once = true; + + /* physical interface link setup */ + mac->ops.setup_physical_interface = igc_setup_copper_link_base; + + return 0; +} + +/** + * igc_init_phy_params_base - Init PHY func ptrs. + * @hw: pointer to the HW structure + */ +static s32 igc_init_phy_params_base(struct igc_hw *hw) +{ + struct igc_phy_info *phy = &hw->phy; + s32 ret_val = 0; + + phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT_2500; + phy->reset_delay_us = 100; + + /* set lan id */ + hw->bus.func = (rd32(IGC_STATUS) & IGC_STATUS_FUNC_MASK) >> + IGC_STATUS_FUNC_SHIFT; + + /* Make sure the PHY is in a good state. Several people have reported + * firmware leaving the PHY's page select register set to something + * other than the default of zero, which causes the PHY ID read to + * access something other than the intended register. + */ + ret_val = hw->phy.ops.reset(hw); + if (ret_val) { + hw_dbg("Error resetting the PHY\n"); + goto out; + } + + ret_val = igc_get_phy_id(hw); + if (ret_val) + return ret_val; + + igc_check_for_copper_link(hw); + +out: + return ret_val; +} + +static s32 igc_get_invariants_base(struct igc_hw *hw) +{ + struct igc_mac_info *mac = &hw->mac; + s32 ret_val = 0; + + switch (hw->device_id) { + case IGC_DEV_ID_I225_LM: + case IGC_DEV_ID_I225_V: + case IGC_DEV_ID_I225_I: + case IGC_DEV_ID_I220_V: + case IGC_DEV_ID_I225_K: + case IGC_DEV_ID_I225_K2: + case IGC_DEV_ID_I226_K: + case IGC_DEV_ID_I225_LMVP: + case IGC_DEV_ID_I226_LMVP: + case IGC_DEV_ID_I225_IT: + case IGC_DEV_ID_I226_LM: + case IGC_DEV_ID_I226_V: + case IGC_DEV_ID_I226_IT: + case IGC_DEV_ID_I221_V: + case IGC_DEV_ID_I226_BLANK_NVM: + case IGC_DEV_ID_I225_BLANK_NVM: + mac->type = igc_i225; + break; + default: + return -IGC_ERR_MAC_INIT; + } + + hw->phy.media_type = igc_media_type_copper; + + /* mac initialization and operations */ + ret_val = igc_init_mac_params_base(hw); + if (ret_val) + goto out; + + /* NVM initialization */ + ret_val = igc_init_nvm_params_base(hw); + switch (hw->mac.type) { + case igc_i225: + ret_val = igc_init_nvm_params_i225(hw); + break; + default: + break; + } + + /* setup PHY parameters */ + ret_val = igc_init_phy_params_base(hw); + if (ret_val) + goto out; + +out: + return ret_val; +} + +/** + * igc_acquire_phy_base - Acquire rights to access PHY + * @hw: pointer to the HW structure + * + * Acquire access rights to the correct PHY. This is a + * function pointer entry point called by the api module. + */ +static s32 igc_acquire_phy_base(struct igc_hw *hw) +{ + u16 mask = IGC_SWFW_PHY0_SM; + + return hw->mac.ops.acquire_swfw_sync(hw, mask); +} + +/** + * igc_release_phy_base - Release rights to access PHY + * @hw: pointer to the HW structure + * + * A wrapper to release access rights to the correct PHY. This is a + * function pointer entry point called by the api module. + */ +static void igc_release_phy_base(struct igc_hw *hw) +{ + u16 mask = IGC_SWFW_PHY0_SM; + + hw->mac.ops.release_swfw_sync(hw, mask); +} + +/** + * igc_init_hw_base - Initialize hardware + * @hw: pointer to the HW structure + * + * This inits the hardware readying it for operation. + */ +static s32 igc_init_hw_base(struct igc_hw *hw) +{ + struct igc_mac_info *mac = &hw->mac; + u16 i, rar_count = mac->rar_entry_count; + s32 ret_val = 0; + + /* Setup the receive address */ + igc_init_rx_addrs(hw, rar_count); + + /* Zero out the Multicast HASH table */ + hw_dbg("Zeroing the MTA\n"); + for (i = 0; i < mac->mta_reg_count; i++) + array_wr32(IGC_MTA, i, 0); + + /* Zero out the Unicast HASH table */ + hw_dbg("Zeroing the UTA\n"); + for (i = 0; i < mac->uta_reg_count; i++) + array_wr32(IGC_UTA, i, 0); + + /* Setup link and flow control */ + ret_val = igc_setup_link(hw); + + /* Clear all of the statistics registers (clear on read). It is + * important that we do this after we have tried to establish link + * because the symbol error count will increment wildly if there + * is no link. + */ + igc_clear_hw_cntrs_base(hw); + + return ret_val; +} + +/** + * igc_power_down_phy_copper_base - Remove link during PHY power down + * @hw: pointer to the HW structure + * + * In the case of a PHY power down to save power, or to turn off link during a + * driver unload, or wake on lan is not enabled, remove the link. + */ +void igc_power_down_phy_copper_base(struct igc_hw *hw) +{ + /* If the management interface is not enabled, then power down */ + if (!(igc_enable_mng_pass_thru(hw) || igc_check_reset_block(hw))) + igc_power_down_phy_copper(hw); +} + +/** + * igc_rx_fifo_flush_base - Clean rx fifo after Rx enable + * @hw: pointer to the HW structure + * + * After Rx enable, if manageability is enabled then there is likely some + * bad data at the start of the fifo and possibly in the DMA fifo. This + * function clears the fifos and flushes any packets that came in as rx was + * being enabled. + */ +void igc_rx_fifo_flush_base(struct igc_hw *hw) +{ + u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled; + int i, ms_wait; + + /* disable IPv6 options as per hardware errata */ + rfctl = rd32(IGC_RFCTL); + rfctl |= IGC_RFCTL_IPV6_EX_DIS; + wr32(IGC_RFCTL, rfctl); + + if (!(rd32(IGC_MANC) & IGC_MANC_RCV_TCO_EN)) + return; + + /* Disable all Rx queues */ + for (i = 0; i < 4; i++) { + rxdctl[i] = rd32(IGC_RXDCTL(i)); + wr32(IGC_RXDCTL(i), + rxdctl[i] & ~IGC_RXDCTL_QUEUE_ENABLE); + } + /* Poll all queues to verify they have shut down */ + for (ms_wait = 0; ms_wait < 10; ms_wait++) { + usleep_range(1000, 2000); + rx_enabled = 0; + for (i = 0; i < 4; i++) + rx_enabled |= rd32(IGC_RXDCTL(i)); + if (!(rx_enabled & IGC_RXDCTL_QUEUE_ENABLE)) + break; + } + + if (ms_wait == 10) + hw_dbg("Queue disable timed out after 10ms\n"); + + /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all + * incoming packets are rejected. Set enable and wait 2ms so that + * any packet that was coming in as RCTL.EN was set is flushed + */ + wr32(IGC_RFCTL, rfctl & ~IGC_RFCTL_LEF); + + rlpml = rd32(IGC_RLPML); + wr32(IGC_RLPML, 0); + + rctl = rd32(IGC_RCTL); + temp_rctl = rctl & ~(IGC_RCTL_EN | IGC_RCTL_SBP); + temp_rctl |= IGC_RCTL_LPE; + + wr32(IGC_RCTL, temp_rctl); + wr32(IGC_RCTL, temp_rctl | IGC_RCTL_EN); + wrfl(); + usleep_range(2000, 3000); + + /* Enable Rx queues that were previously enabled and restore our + * previous state + */ + for (i = 0; i < 4; i++) + wr32(IGC_RXDCTL(i), rxdctl[i]); + wr32(IGC_RCTL, rctl); + wrfl(); + + wr32(IGC_RLPML, rlpml); + wr32(IGC_RFCTL, rfctl); + + /* Flush receive errors generated by workaround */ + rd32(IGC_ROC); + rd32(IGC_RNBC); + rd32(IGC_MPC); +} + +bool igc_is_device_id_i225(struct igc_hw *hw) +{ + switch (hw->device_id) { + case IGC_DEV_ID_I225_LM: + case IGC_DEV_ID_I225_V: + case IGC_DEV_ID_I225_I: + case IGC_DEV_ID_I225_K: + case IGC_DEV_ID_I225_K2: + case IGC_DEV_ID_I225_LMVP: + case IGC_DEV_ID_I225_IT: + return true; + default: + return false; + } +} + +bool igc_is_device_id_i226(struct igc_hw *hw) +{ + switch (hw->device_id) { + case IGC_DEV_ID_I226_LM: + case IGC_DEV_ID_I226_V: + case IGC_DEV_ID_I226_K: + case IGC_DEV_ID_I226_IT: + return true; + default: + return false; + } +} + +static struct igc_mac_operations igc_mac_ops_base = { + .init_hw = igc_init_hw_base, + .check_for_link = igc_check_for_copper_link, + .rar_set = igc_rar_set, + .read_mac_addr = igc_read_mac_addr, + .get_speed_and_duplex = igc_get_speed_and_duplex_copper, +}; + +static const struct igc_phy_operations igc_phy_ops_base = { + .acquire = igc_acquire_phy_base, + .release = igc_release_phy_base, + .reset = igc_phy_hw_reset, + .read_reg = igc_read_phy_reg_gpy, + .write_reg = igc_write_phy_reg_gpy, +}; + +const struct igc_info igc_base_info = { + .get_invariants = igc_get_invariants_base, + .mac_ops = &igc_mac_ops_base, + .phy_ops = &igc_phy_ops_base, +}; -- cgit v1.2.3