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/irqchip/irq-mscc-ocelot.c | 218 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 218 insertions(+) create mode 100644 drivers/irqchip/irq-mscc-ocelot.c (limited to 'drivers/irqchip/irq-mscc-ocelot.c') diff --git a/drivers/irqchip/irq-mscc-ocelot.c b/drivers/irqchip/irq-mscc-ocelot.c new file mode 100644 index 000000000..4d0c3532d --- /dev/null +++ b/drivers/irqchip/irq-mscc-ocelot.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: (GPL-2.0 OR MIT) +/* + * Microsemi Ocelot IRQ controller driver + * + * Copyright (c) 2017 Microsemi Corporation + */ +#include +#include +#include +#include +#include +#include +#include + +#define ICPU_CFG_INTR_DST_INTR_IDENT(_p, x) ((_p)->reg_off_ident + 0x4 * (x)) +#define ICPU_CFG_INTR_INTR_TRIGGER(_p, x) ((_p)->reg_off_trigger + 0x4 * (x)) + +#define FLAGS_HAS_TRIGGER BIT(0) +#define FLAGS_NEED_INIT_ENABLE BIT(1) + +struct chip_props { + u8 flags; + u8 reg_off_sticky; + u8 reg_off_ena; + u8 reg_off_ena_clr; + u8 reg_off_ena_set; + u8 reg_off_ident; + u8 reg_off_trigger; + u8 reg_off_ena_irq0; + u8 n_irq; +}; + +static struct chip_props ocelot_props = { + .flags = FLAGS_HAS_TRIGGER, + .reg_off_sticky = 0x10, + .reg_off_ena = 0x18, + .reg_off_ena_clr = 0x1c, + .reg_off_ena_set = 0x20, + .reg_off_ident = 0x38, + .reg_off_trigger = 0x5c, + .n_irq = 24, +}; + +static struct chip_props serval_props = { + .flags = FLAGS_HAS_TRIGGER, + .reg_off_sticky = 0xc, + .reg_off_ena = 0x14, + .reg_off_ena_clr = 0x18, + .reg_off_ena_set = 0x1c, + .reg_off_ident = 0x20, + .reg_off_trigger = 0x4, + .n_irq = 24, +}; + +static struct chip_props luton_props = { + .flags = FLAGS_NEED_INIT_ENABLE, + .reg_off_sticky = 0, + .reg_off_ena = 0x4, + .reg_off_ena_clr = 0x8, + .reg_off_ena_set = 0xc, + .reg_off_ident = 0x18, + .reg_off_ena_irq0 = 0x14, + .n_irq = 28, +}; + +static struct chip_props jaguar2_props = { + .flags = FLAGS_HAS_TRIGGER, + .reg_off_sticky = 0x10, + .reg_off_ena = 0x18, + .reg_off_ena_clr = 0x1c, + .reg_off_ena_set = 0x20, + .reg_off_ident = 0x38, + .reg_off_trigger = 0x5c, + .n_irq = 29, +}; + +static void ocelot_irq_unmask(struct irq_data *data) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data); + struct irq_domain *d = data->domain; + struct chip_props *p = d->host_data; + struct irq_chip_type *ct = irq_data_get_chip_type(data); + unsigned int mask = data->mask; + u32 val; + + irq_gc_lock(gc); + val = irq_reg_readl(gc, ICPU_CFG_INTR_INTR_TRIGGER(p, 0)) | + irq_reg_readl(gc, ICPU_CFG_INTR_INTR_TRIGGER(p, 1)); + if (!(val & mask)) + irq_reg_writel(gc, mask, p->reg_off_sticky); + + *ct->mask_cache &= ~mask; + irq_reg_writel(gc, mask, p->reg_off_ena_set); + irq_gc_unlock(gc); +} + +static void ocelot_irq_handler(struct irq_desc *desc) +{ + struct irq_chip *chip = irq_desc_get_chip(desc); + struct irq_domain *d = irq_desc_get_handler_data(desc); + struct chip_props *p = d->host_data; + struct irq_chip_generic *gc = irq_get_domain_generic_chip(d, 0); + u32 reg = irq_reg_readl(gc, ICPU_CFG_INTR_DST_INTR_IDENT(p, 0)); + + chained_irq_enter(chip, desc); + + while (reg) { + u32 hwirq = __fls(reg); + + generic_handle_domain_irq(d, hwirq); + reg &= ~(BIT(hwirq)); + } + + chained_irq_exit(chip, desc); +} + +static int __init vcoreiii_irq_init(struct device_node *node, + struct device_node *parent, + struct chip_props *p) +{ + struct irq_domain *domain; + struct irq_chip_generic *gc; + int parent_irq, ret; + + parent_irq = irq_of_parse_and_map(node, 0); + if (!parent_irq) + return -EINVAL; + + domain = irq_domain_add_linear(node, p->n_irq, + &irq_generic_chip_ops, NULL); + if (!domain) { + pr_err("%pOFn: unable to add irq domain\n", node); + return -ENOMEM; + } + + ret = irq_alloc_domain_generic_chips(domain, p->n_irq, 1, + "icpu", handle_level_irq, + 0, 0, 0); + if (ret) { + pr_err("%pOFn: unable to alloc irq domain gc\n", node); + goto err_domain_remove; + } + + gc = irq_get_domain_generic_chip(domain, 0); + gc->reg_base = of_iomap(node, 0); + if (!gc->reg_base) { + pr_err("%pOFn: unable to map resource\n", node); + ret = -ENOMEM; + goto err_gc_free; + } + + gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit; + gc->chip_types[0].regs.ack = p->reg_off_sticky; + if (p->flags & FLAGS_HAS_TRIGGER) { + gc->chip_types[0].regs.mask = p->reg_off_ena_clr; + gc->chip_types[0].chip.irq_unmask = ocelot_irq_unmask; + gc->chip_types[0].chip.irq_mask = irq_gc_mask_set_bit; + } else { + gc->chip_types[0].regs.enable = p->reg_off_ena_set; + gc->chip_types[0].regs.disable = p->reg_off_ena_clr; + gc->chip_types[0].chip.irq_mask = irq_gc_mask_disable_reg; + gc->chip_types[0].chip.irq_unmask = irq_gc_unmask_enable_reg; + } + + /* Mask and ack all interrupts */ + irq_reg_writel(gc, 0, p->reg_off_ena); + irq_reg_writel(gc, 0xffffffff, p->reg_off_sticky); + + /* Overall init */ + if (p->flags & FLAGS_NEED_INIT_ENABLE) + irq_reg_writel(gc, BIT(0), p->reg_off_ena_irq0); + + domain->host_data = p; + irq_set_chained_handler_and_data(parent_irq, ocelot_irq_handler, + domain); + + return 0; + +err_gc_free: + irq_free_generic_chip(gc); + +err_domain_remove: + irq_domain_remove(domain); + + return ret; +} + +static int __init ocelot_irq_init(struct device_node *node, + struct device_node *parent) +{ + return vcoreiii_irq_init(node, parent, &ocelot_props); +} + +IRQCHIP_DECLARE(ocelot_icpu, "mscc,ocelot-icpu-intr", ocelot_irq_init); + +static int __init serval_irq_init(struct device_node *node, + struct device_node *parent) +{ + return vcoreiii_irq_init(node, parent, &serval_props); +} + +IRQCHIP_DECLARE(serval_icpu, "mscc,serval-icpu-intr", serval_irq_init); + +static int __init luton_irq_init(struct device_node *node, + struct device_node *parent) +{ + return vcoreiii_irq_init(node, parent, &luton_props); +} + +IRQCHIP_DECLARE(luton_icpu, "mscc,luton-icpu-intr", luton_irq_init); + +static int __init jaguar2_irq_init(struct device_node *node, + struct device_node *parent) +{ + return vcoreiii_irq_init(node, parent, &jaguar2_props); +} + +IRQCHIP_DECLARE(jaguar2_icpu, "mscc,jaguar2-icpu-intr", jaguar2_irq_init); -- cgit v1.2.3