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/macintosh/ams/ams-core.c | 237 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 237 insertions(+) create mode 100644 drivers/macintosh/ams/ams-core.c (limited to 'drivers/macintosh/ams/ams-core.c') diff --git a/drivers/macintosh/ams/ams-core.c b/drivers/macintosh/ams/ams-core.c new file mode 100644 index 000000000..877e8cb23 --- /dev/null +++ b/drivers/macintosh/ams/ams-core.c @@ -0,0 +1,237 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Apple Motion Sensor driver + * + * Copyright (C) 2005 Stelian Pop (stelian@popies.net) + * Copyright (C) 2006 Michael Hanselmann (linux-kernel@hansmi.ch) + */ + +#include +#include +#include +#include +#include +#include + +#include "ams.h" + +/* There is only one motion sensor per machine */ +struct ams ams_info; + +static bool verbose; +module_param(verbose, bool, 0644); +MODULE_PARM_DESC(verbose, "Show free falls and shocks in kernel output"); + +/* Call with ams_info.lock held! */ +void ams_sensors(s8 *x, s8 *y, s8 *z) +{ + u32 orient = ams_info.vflag? ams_info.orient1 : ams_info.orient2; + + if (orient & 0x80) + /* X and Y swapped */ + ams_info.get_xyz(y, x, z); + else + ams_info.get_xyz(x, y, z); + + if (orient & 0x04) + *z = ~(*z); + if (orient & 0x02) + *y = ~(*y); + if (orient & 0x01) + *x = ~(*x); +} + +static ssize_t ams_show_current(struct device *dev, + struct device_attribute *attr, char *buf) +{ + s8 x, y, z; + + mutex_lock(&ams_info.lock); + ams_sensors(&x, &y, &z); + mutex_unlock(&ams_info.lock); + + return sysfs_emit(buf, "%d %d %d\n", x, y, z); +} + +static DEVICE_ATTR(current, S_IRUGO, ams_show_current, NULL); + +static void ams_handle_irq(void *data) +{ + enum ams_irq irq = *((enum ams_irq *)data); + + spin_lock(&ams_info.irq_lock); + + ams_info.worker_irqs |= irq; + schedule_work(&ams_info.worker); + + spin_unlock(&ams_info.irq_lock); +} + +static enum ams_irq ams_freefall_irq_data = AMS_IRQ_FREEFALL; +static struct pmf_irq_client ams_freefall_client = { + .owner = THIS_MODULE, + .handler = ams_handle_irq, + .data = &ams_freefall_irq_data, +}; + +static enum ams_irq ams_shock_irq_data = AMS_IRQ_SHOCK; +static struct pmf_irq_client ams_shock_client = { + .owner = THIS_MODULE, + .handler = ams_handle_irq, + .data = &ams_shock_irq_data, +}; + +/* Once hard disk parking is implemented in the kernel, this function can + * trigger it. + */ +static void ams_worker(struct work_struct *work) +{ + unsigned long flags; + u8 irqs_to_clear; + + mutex_lock(&ams_info.lock); + + spin_lock_irqsave(&ams_info.irq_lock, flags); + irqs_to_clear = ams_info.worker_irqs; + + if (ams_info.worker_irqs & AMS_IRQ_FREEFALL) { + if (verbose) + printk(KERN_INFO "ams: freefall detected!\n"); + + ams_info.worker_irqs &= ~AMS_IRQ_FREEFALL; + } + + if (ams_info.worker_irqs & AMS_IRQ_SHOCK) { + if (verbose) + printk(KERN_INFO "ams: shock detected!\n"); + + ams_info.worker_irqs &= ~AMS_IRQ_SHOCK; + } + + spin_unlock_irqrestore(&ams_info.irq_lock, flags); + + ams_info.clear_irq(irqs_to_clear); + + mutex_unlock(&ams_info.lock); +} + +/* Call with ams_info.lock held! */ +int ams_sensor_attach(void) +{ + int result; + const u32 *prop; + + /* Get orientation */ + prop = of_get_property(ams_info.of_node, "orientation", NULL); + if (!prop) + return -ENODEV; + ams_info.orient1 = *prop; + ams_info.orient2 = *(prop + 1); + + /* Register freefall interrupt handler */ + result = pmf_register_irq_client(ams_info.of_node, + "accel-int-1", + &ams_freefall_client); + if (result < 0) + return -ENODEV; + + /* Reset saved irqs */ + ams_info.worker_irqs = 0; + + /* Register shock interrupt handler */ + result = pmf_register_irq_client(ams_info.of_node, + "accel-int-2", + &ams_shock_client); + if (result < 0) + goto release_freefall; + + /* Create device */ + ams_info.of_dev = of_platform_device_create(ams_info.of_node, "ams", NULL); + if (!ams_info.of_dev) { + result = -ENODEV; + goto release_shock; + } + + /* Create attributes */ + result = device_create_file(&ams_info.of_dev->dev, &dev_attr_current); + if (result) + goto release_of; + + ams_info.vflag = !!(ams_info.get_vendor() & 0x10); + + /* Init input device */ + result = ams_input_init(); + if (result) + goto release_device_file; + + return result; +release_device_file: + device_remove_file(&ams_info.of_dev->dev, &dev_attr_current); +release_of: + of_device_unregister(ams_info.of_dev); +release_shock: + pmf_unregister_irq_client(&ams_shock_client); +release_freefall: + pmf_unregister_irq_client(&ams_freefall_client); + return result; +} + +int __init ams_init(void) +{ + struct device_node *np; + + spin_lock_init(&ams_info.irq_lock); + mutex_init(&ams_info.lock); + INIT_WORK(&ams_info.worker, ams_worker); + +#ifdef CONFIG_SENSORS_AMS_I2C + np = of_find_node_by_name(NULL, "accelerometer"); + if (np && of_device_is_compatible(np, "AAPL,accelerometer_1")) + /* Found I2C motion sensor */ + return ams_i2c_init(np); +#endif + +#ifdef CONFIG_SENSORS_AMS_PMU + np = of_find_node_by_name(NULL, "sms"); + if (np && of_device_is_compatible(np, "sms")) + /* Found PMU motion sensor */ + return ams_pmu_init(np); +#endif + return -ENODEV; +} + +void ams_sensor_detach(void) +{ + /* Remove input device */ + ams_input_exit(); + + /* Remove attributes */ + device_remove_file(&ams_info.of_dev->dev, &dev_attr_current); + + /* Flush interrupt worker + * + * We do this after ams_info.exit(), because an interrupt might + * have arrived before disabling them. + */ + flush_work(&ams_info.worker); + + /* Remove device */ + of_device_unregister(ams_info.of_dev); + + /* Remove handler */ + pmf_unregister_irq_client(&ams_shock_client); + pmf_unregister_irq_client(&ams_freefall_client); +} + +static void __exit ams_exit(void) +{ + /* Shut down implementation */ + ams_info.exit(); +} + +MODULE_AUTHOR("Stelian Pop, Michael Hanselmann"); +MODULE_DESCRIPTION("Apple Motion Sensor driver"); +MODULE_LICENSE("GPL"); + +module_init(ams_init); +module_exit(ams_exit); -- cgit v1.2.3