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/input/serio/ioc3kbd.c | 216 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 216 insertions(+) create mode 100644 drivers/input/serio/ioc3kbd.c (limited to 'drivers/input/serio/ioc3kbd.c') diff --git a/drivers/input/serio/ioc3kbd.c b/drivers/input/serio/ioc3kbd.c new file mode 100644 index 000000000..d51bfe912 --- /dev/null +++ b/drivers/input/serio/ioc3kbd.c @@ -0,0 +1,216 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SGI IOC3 PS/2 controller driver for linux + * + * Copyright (C) 2019 Thomas Bogendoerfer + * + * Based on code Copyright (C) 2005 Stanislaw Skowronek + * Copyright (C) 2009 Johannes Dickgreber + */ + +#include +#include +#include +#include +#include +#include + +#include + +struct ioc3kbd_data { + struct ioc3_serioregs __iomem *regs; + struct serio *kbd, *aux; + bool kbd_exists, aux_exists; + int irq; +}; + +static int ioc3kbd_wait(struct ioc3_serioregs __iomem *regs, u32 mask) +{ + unsigned long timeout = 0; + + while ((readl(®s->km_csr) & mask) && (timeout < 250)) { + udelay(50); + timeout++; + } + return (timeout >= 250) ? -ETIMEDOUT : 0; +} + +static int ioc3kbd_write(struct serio *dev, u8 val) +{ + struct ioc3kbd_data *d = dev->port_data; + int ret; + + ret = ioc3kbd_wait(d->regs, KM_CSR_K_WRT_PEND); + if (ret) + return ret; + + writel(val, &d->regs->k_wd); + + return 0; +} + +static int ioc3kbd_start(struct serio *dev) +{ + struct ioc3kbd_data *d = dev->port_data; + + d->kbd_exists = true; + return 0; +} + +static void ioc3kbd_stop(struct serio *dev) +{ + struct ioc3kbd_data *d = dev->port_data; + + d->kbd_exists = false; +} + +static int ioc3aux_write(struct serio *dev, u8 val) +{ + struct ioc3kbd_data *d = dev->port_data; + int ret; + + ret = ioc3kbd_wait(d->regs, KM_CSR_M_WRT_PEND); + if (ret) + return ret; + + writel(val, &d->regs->m_wd); + + return 0; +} + +static int ioc3aux_start(struct serio *dev) +{ + struct ioc3kbd_data *d = dev->port_data; + + d->aux_exists = true; + return 0; +} + +static void ioc3aux_stop(struct serio *dev) +{ + struct ioc3kbd_data *d = dev->port_data; + + d->aux_exists = false; +} + +static void ioc3kbd_process_data(struct serio *dev, u32 data) +{ + if (data & KM_RD_VALID_0) + serio_interrupt(dev, (data >> KM_RD_DATA_0_SHIFT) & 0xff, 0); + if (data & KM_RD_VALID_1) + serio_interrupt(dev, (data >> KM_RD_DATA_1_SHIFT) & 0xff, 0); + if (data & KM_RD_VALID_2) + serio_interrupt(dev, (data >> KM_RD_DATA_2_SHIFT) & 0xff, 0); +} + +static irqreturn_t ioc3kbd_intr(int itq, void *dev_id) +{ + struct ioc3kbd_data *d = dev_id; + u32 data_k, data_m; + + data_k = readl(&d->regs->k_rd); + if (d->kbd_exists) + ioc3kbd_process_data(d->kbd, data_k); + + data_m = readl(&d->regs->m_rd); + if (d->aux_exists) + ioc3kbd_process_data(d->aux, data_m); + + return IRQ_HANDLED; +} + +static int ioc3kbd_probe(struct platform_device *pdev) +{ + struct ioc3_serioregs __iomem *regs; + struct device *dev = &pdev->dev; + struct ioc3kbd_data *d; + struct serio *sk, *sa; + int irq, ret; + + regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return -ENXIO; + + d = devm_kzalloc(dev, sizeof(*d), GFP_KERNEL); + if (!d) + return -ENOMEM; + + sk = kzalloc(sizeof(*sk), GFP_KERNEL); + if (!sk) + return -ENOMEM; + + sa = kzalloc(sizeof(*sa), GFP_KERNEL); + if (!sa) { + kfree(sk); + return -ENOMEM; + } + + sk->id.type = SERIO_8042; + sk->write = ioc3kbd_write; + sk->start = ioc3kbd_start; + sk->stop = ioc3kbd_stop; + snprintf(sk->name, sizeof(sk->name), "IOC3 keyboard %d", pdev->id); + snprintf(sk->phys, sizeof(sk->phys), "ioc3/serio%dkbd", pdev->id); + sk->port_data = d; + sk->dev.parent = dev; + + sa->id.type = SERIO_8042; + sa->write = ioc3aux_write; + sa->start = ioc3aux_start; + sa->stop = ioc3aux_stop; + snprintf(sa->name, sizeof(sa->name), "IOC3 auxiliary %d", pdev->id); + snprintf(sa->phys, sizeof(sa->phys), "ioc3/serio%daux", pdev->id); + sa->port_data = d; + sa->dev.parent = dev; + + d->regs = regs; + d->kbd = sk; + d->aux = sa; + d->irq = irq; + + platform_set_drvdata(pdev, d); + serio_register_port(d->kbd); + serio_register_port(d->aux); + + ret = request_irq(irq, ioc3kbd_intr, IRQF_SHARED, "ioc3-kbd", d); + if (ret) { + dev_err(dev, "could not request IRQ %d\n", irq); + serio_unregister_port(d->kbd); + serio_unregister_port(d->aux); + return ret; + } + + /* enable ports */ + writel(KM_CSR_K_CLAMP_3 | KM_CSR_M_CLAMP_3, ®s->km_csr); + + return 0; +} + +static int ioc3kbd_remove(struct platform_device *pdev) +{ + struct ioc3kbd_data *d = platform_get_drvdata(pdev); + + free_irq(d->irq, d); + + serio_unregister_port(d->kbd); + serio_unregister_port(d->aux); + + return 0; +} + +static struct platform_driver ioc3kbd_driver = { + .probe = ioc3kbd_probe, + .remove = ioc3kbd_remove, + .driver = { + .name = "ioc3-kbd", + }, +}; +module_platform_driver(ioc3kbd_driver); + +MODULE_AUTHOR("Thomas Bogendoerfer "); +MODULE_DESCRIPTION("SGI IOC3 serio driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3