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/exynos-combiner.c | 272 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 272 insertions(+) create mode 100644 drivers/irqchip/exynos-combiner.c (limited to 'drivers/irqchip/exynos-combiner.c') diff --git a/drivers/irqchip/exynos-combiner.c b/drivers/irqchip/exynos-combiner.c new file mode 100644 index 000000000..552aa04ff --- /dev/null +++ b/drivers/irqchip/exynos-combiner.c @@ -0,0 +1,272 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Combiner irqchip for EXYNOS + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define COMBINER_ENABLE_SET 0x0 +#define COMBINER_ENABLE_CLEAR 0x4 +#define COMBINER_INT_STATUS 0xC + +#define IRQ_IN_COMBINER 8 + +static DEFINE_SPINLOCK(irq_controller_lock); + +struct combiner_chip_data { + unsigned int hwirq_offset; + unsigned int irq_mask; + void __iomem *base; + unsigned int parent_irq; +#ifdef CONFIG_PM + u32 pm_save; +#endif +}; + +static struct combiner_chip_data *combiner_data; +static struct irq_domain *combiner_irq_domain; +static unsigned int max_nr = 20; + +static inline void __iomem *combiner_base(struct irq_data *data) +{ + struct combiner_chip_data *combiner_data = + irq_data_get_irq_chip_data(data); + + return combiner_data->base; +} + +static void combiner_mask_irq(struct irq_data *data) +{ + u32 mask = 1 << (data->hwirq % 32); + + writel_relaxed(mask, combiner_base(data) + COMBINER_ENABLE_CLEAR); +} + +static void combiner_unmask_irq(struct irq_data *data) +{ + u32 mask = 1 << (data->hwirq % 32); + + writel_relaxed(mask, combiner_base(data) + COMBINER_ENABLE_SET); +} + +static void combiner_handle_cascade_irq(struct irq_desc *desc) +{ + struct combiner_chip_data *chip_data = irq_desc_get_handler_data(desc); + struct irq_chip *chip = irq_desc_get_chip(desc); + unsigned int combiner_irq; + unsigned long status; + int ret; + + chained_irq_enter(chip, desc); + + spin_lock(&irq_controller_lock); + status = readl_relaxed(chip_data->base + COMBINER_INT_STATUS); + spin_unlock(&irq_controller_lock); + status &= chip_data->irq_mask; + + if (status == 0) + goto out; + + combiner_irq = chip_data->hwirq_offset + __ffs(status); + ret = generic_handle_domain_irq(combiner_irq_domain, combiner_irq); + if (unlikely(ret)) + handle_bad_irq(desc); + + out: + chained_irq_exit(chip, desc); +} + +#ifdef CONFIG_SMP +static int combiner_set_affinity(struct irq_data *d, + const struct cpumask *mask_val, bool force) +{ + struct combiner_chip_data *chip_data = irq_data_get_irq_chip_data(d); + struct irq_chip *chip = irq_get_chip(chip_data->parent_irq); + struct irq_data *data = irq_get_irq_data(chip_data->parent_irq); + + if (chip && chip->irq_set_affinity) + return chip->irq_set_affinity(data, mask_val, force); + else + return -EINVAL; +} +#endif + +static struct irq_chip combiner_chip = { + .name = "COMBINER", + .irq_mask = combiner_mask_irq, + .irq_unmask = combiner_unmask_irq, +#ifdef CONFIG_SMP + .irq_set_affinity = combiner_set_affinity, +#endif +}; + +static void __init combiner_cascade_irq(struct combiner_chip_data *combiner_data, + unsigned int irq) +{ + irq_set_chained_handler_and_data(irq, combiner_handle_cascade_irq, + combiner_data); +} + +static void __init combiner_init_one(struct combiner_chip_data *combiner_data, + unsigned int combiner_nr, + void __iomem *base, unsigned int irq) +{ + combiner_data->base = base; + combiner_data->hwirq_offset = (combiner_nr & ~3) * IRQ_IN_COMBINER; + combiner_data->irq_mask = 0xff << ((combiner_nr % 4) << 3); + combiner_data->parent_irq = irq; + + /* Disable all interrupts */ + writel_relaxed(combiner_data->irq_mask, base + COMBINER_ENABLE_CLEAR); +} + +static int combiner_irq_domain_xlate(struct irq_domain *d, + struct device_node *controller, + const u32 *intspec, unsigned int intsize, + unsigned long *out_hwirq, + unsigned int *out_type) +{ + if (irq_domain_get_of_node(d) != controller) + return -EINVAL; + + if (intsize < 2) + return -EINVAL; + + *out_hwirq = intspec[0] * IRQ_IN_COMBINER + intspec[1]; + *out_type = 0; + + return 0; +} + +static int combiner_irq_domain_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hw) +{ + struct combiner_chip_data *combiner_data = d->host_data; + + irq_set_chip_and_handler(irq, &combiner_chip, handle_level_irq); + irq_set_chip_data(irq, &combiner_data[hw >> 3]); + irq_set_probe(irq); + + return 0; +} + +static const struct irq_domain_ops combiner_irq_domain_ops = { + .xlate = combiner_irq_domain_xlate, + .map = combiner_irq_domain_map, +}; + +static void __init combiner_init(void __iomem *combiner_base, + struct device_node *np) +{ + int i, irq; + unsigned int nr_irq; + + nr_irq = max_nr * IRQ_IN_COMBINER; + + combiner_data = kcalloc(max_nr, sizeof (*combiner_data), GFP_KERNEL); + if (!combiner_data) + return; + + combiner_irq_domain = irq_domain_add_linear(np, nr_irq, + &combiner_irq_domain_ops, combiner_data); + if (WARN_ON(!combiner_irq_domain)) { + pr_warn("%s: irq domain init failed\n", __func__); + return; + } + + for (i = 0; i < max_nr; i++) { + irq = irq_of_parse_and_map(np, i); + + combiner_init_one(&combiner_data[i], i, + combiner_base + (i >> 2) * 0x10, irq); + combiner_cascade_irq(&combiner_data[i], irq); + } +} + +#ifdef CONFIG_PM + +/** + * combiner_suspend - save interrupt combiner state before suspend + * + * Save the interrupt enable set register for all combiner groups since + * the state is lost when the system enters into a sleep state. + * + */ +static int combiner_suspend(void) +{ + int i; + + for (i = 0; i < max_nr; i++) + combiner_data[i].pm_save = + readl_relaxed(combiner_data[i].base + COMBINER_ENABLE_SET); + + return 0; +} + +/** + * combiner_resume - restore interrupt combiner state after resume + * + * Restore the interrupt enable set register for all combiner groups since + * the state is lost when the system enters into a sleep state on suspend. + * + */ +static void combiner_resume(void) +{ + int i; + + for (i = 0; i < max_nr; i++) { + writel_relaxed(combiner_data[i].irq_mask, + combiner_data[i].base + COMBINER_ENABLE_CLEAR); + writel_relaxed(combiner_data[i].pm_save, + combiner_data[i].base + COMBINER_ENABLE_SET); + } +} + +#else +#define combiner_suspend NULL +#define combiner_resume NULL +#endif + +static struct syscore_ops combiner_syscore_ops = { + .suspend = combiner_suspend, + .resume = combiner_resume, +}; + +static int __init combiner_of_init(struct device_node *np, + struct device_node *parent) +{ + void __iomem *combiner_base; + + combiner_base = of_iomap(np, 0); + if (!combiner_base) { + pr_err("%s: failed to map combiner registers\n", __func__); + return -ENXIO; + } + + if (of_property_read_u32(np, "samsung,combiner-nr", &max_nr)) { + pr_info("%s: number of combiners not specified, " + "setting default as %d.\n", + __func__, max_nr); + } + + combiner_init(combiner_base, np); + + register_syscore_ops(&combiner_syscore_ops); + + return 0; +} +IRQCHIP_DECLARE(exynos4210_combiner, "samsung,exynos4210-combiner", + combiner_of_init); -- cgit v1.2.3