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/media/rc/rc-core-priv.h | 351 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 351 insertions(+) create mode 100644 drivers/media/rc/rc-core-priv.h (limited to 'drivers/media/rc/rc-core-priv.h') diff --git a/drivers/media/rc/rc-core-priv.h b/drivers/media/rc/rc-core-priv.h new file mode 100644 index 000000000..ef1e95e1a --- /dev/null +++ b/drivers/media/rc/rc-core-priv.h @@ -0,0 +1,351 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Remote Controller core raw events header + * + * Copyright (C) 2010 by Mauro Carvalho Chehab + */ + +#ifndef _RC_CORE_PRIV +#define _RC_CORE_PRIV + +#define RC_DEV_MAX 256 +/* Define the max number of pulse/space transitions to buffer */ +#define MAX_IR_EVENT_SIZE 512 + +#include +#include +#include + +/** + * rc_open - Opens a RC device + * + * @rdev: pointer to struct rc_dev. + */ +int rc_open(struct rc_dev *rdev); + +/** + * rc_close - Closes a RC device + * + * @rdev: pointer to struct rc_dev. + */ +void rc_close(struct rc_dev *rdev); + +struct ir_raw_handler { + struct list_head list; + + u64 protocols; /* which are handled by this handler */ + int (*decode)(struct rc_dev *dev, struct ir_raw_event event); + int (*encode)(enum rc_proto protocol, u32 scancode, + struct ir_raw_event *events, unsigned int max); + u32 carrier; + u32 min_timeout; + + /* These two should only be used by the mce kbd decoder */ + int (*raw_register)(struct rc_dev *dev); + int (*raw_unregister)(struct rc_dev *dev); +}; + +struct ir_raw_event_ctrl { + struct list_head list; /* to keep track of raw clients */ + struct task_struct *thread; + /* fifo for the pulse/space durations */ + DECLARE_KFIFO(kfifo, struct ir_raw_event, MAX_IR_EVENT_SIZE); + ktime_t last_event; /* when last event occurred */ + struct rc_dev *dev; /* pointer to the parent rc_dev */ + /* handle delayed ir_raw_event_store_edge processing */ + spinlock_t edge_spinlock; + struct timer_list edge_handle; + + /* raw decoder state follows */ + struct ir_raw_event prev_ev; + struct ir_raw_event this_ev; + +#ifdef CONFIG_BPF_LIRC_MODE2 + u32 bpf_sample; + struct bpf_prog_array __rcu *progs; +#endif +#if IS_ENABLED(CONFIG_IR_NEC_DECODER) + struct nec_dec { + int state; + unsigned count; + u32 bits; + bool is_nec_x; + bool necx_repeat; + } nec; +#endif +#if IS_ENABLED(CONFIG_IR_RC5_DECODER) + struct rc5_dec { + int state; + u32 bits; + unsigned count; + bool is_rc5x; + } rc5; +#endif +#if IS_ENABLED(CONFIG_IR_RC6_DECODER) + struct rc6_dec { + int state; + u8 header; + u32 body; + bool toggle; + unsigned count; + unsigned wanted_bits; + } rc6; +#endif +#if IS_ENABLED(CONFIG_IR_SONY_DECODER) + struct sony_dec { + int state; + u32 bits; + unsigned count; + } sony; +#endif +#if IS_ENABLED(CONFIG_IR_JVC_DECODER) + struct jvc_dec { + int state; + u16 bits; + u16 old_bits; + unsigned count; + bool first; + bool toggle; + } jvc; +#endif +#if IS_ENABLED(CONFIG_IR_SANYO_DECODER) + struct sanyo_dec { + int state; + unsigned count; + u64 bits; + } sanyo; +#endif +#if IS_ENABLED(CONFIG_IR_SHARP_DECODER) + struct sharp_dec { + int state; + unsigned count; + u32 bits; + unsigned int pulse_len; + } sharp; +#endif +#if IS_ENABLED(CONFIG_IR_MCE_KBD_DECODER) + struct mce_kbd_dec { + /* locks key up timer */ + spinlock_t keylock; + struct timer_list rx_timeout; + int state; + u8 header; + u32 body; + unsigned count; + unsigned wanted_bits; + } mce_kbd; +#endif +#if IS_ENABLED(CONFIG_IR_XMP_DECODER) + struct xmp_dec { + int state; + unsigned count; + u32 durations[16]; + } xmp; +#endif +#if IS_ENABLED(CONFIG_IR_IMON_DECODER) + struct imon_dec { + int state; + int count; + int last_chk; + unsigned int bits; + bool stick_keyboard; + } imon; +#endif +#if IS_ENABLED(CONFIG_IR_RCMM_DECODER) + struct rcmm_dec { + int state; + unsigned int count; + u32 bits; + } rcmm; +#endif +}; + +/* Mutex for locking raw IR processing and handler change */ +extern struct mutex ir_raw_handler_lock; + +/* macros for IR decoders */ +static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin) +{ + return d1 > (d2 - margin); +} + +static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin) +{ + return ((d1 > (d2 - margin)) && (d1 < (d2 + margin))); +} + +static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y) +{ + return x->pulse != y->pulse; +} + +static inline void decrease_duration(struct ir_raw_event *ev, unsigned duration) +{ + if (duration > ev->duration) + ev->duration = 0; + else + ev->duration -= duration; +} + +/* Returns true if event is normal pulse/space event */ +static inline bool is_timing_event(struct ir_raw_event ev) +{ + return !ev.carrier_report && !ev.overflow; +} + +#define TO_STR(is_pulse) ((is_pulse) ? "pulse" : "space") + +/* functions for IR encoders */ +bool rc_validate_scancode(enum rc_proto proto, u32 scancode); + +static inline void init_ir_raw_event_duration(struct ir_raw_event *ev, + unsigned int pulse, + u32 duration) +{ + *ev = (struct ir_raw_event) { + .duration = duration, + .pulse = pulse + }; +} + +/** + * struct ir_raw_timings_manchester - Manchester coding timings + * @leader_pulse: duration of leader pulse (if any) 0 if continuing + * existing signal + * @leader_space: duration of leader space (if any) + * @clock: duration of each pulse/space in ns + * @invert: if set clock logic is inverted + * (0 = space + pulse, 1 = pulse + space) + * @trailer_space: duration of trailer space in ns + */ +struct ir_raw_timings_manchester { + unsigned int leader_pulse; + unsigned int leader_space; + unsigned int clock; + unsigned int invert:1; + unsigned int trailer_space; +}; + +int ir_raw_gen_manchester(struct ir_raw_event **ev, unsigned int max, + const struct ir_raw_timings_manchester *timings, + unsigned int n, u64 data); + +/** + * ir_raw_gen_pulse_space() - generate pulse and space raw events. + * @ev: Pointer to pointer to next free raw event. + * Will be incremented for each raw event written. + * @max: Pointer to number of raw events available in buffer. + * Will be decremented for each raw event written. + * @pulse_width: Width of pulse in ns. + * @space_width: Width of space in ns. + * + * Returns: 0 on success. + * -ENOBUFS if there isn't enough buffer space to write both raw + * events. In this case @max events will have been written. + */ +static inline int ir_raw_gen_pulse_space(struct ir_raw_event **ev, + unsigned int *max, + unsigned int pulse_width, + unsigned int space_width) +{ + if (!*max) + return -ENOBUFS; + init_ir_raw_event_duration((*ev)++, 1, pulse_width); + if (!--*max) + return -ENOBUFS; + init_ir_raw_event_duration((*ev)++, 0, space_width); + --*max; + return 0; +} + +/** + * struct ir_raw_timings_pd - pulse-distance modulation timings + * @header_pulse: duration of header pulse in ns (0 for none) + * @header_space: duration of header space in ns + * @bit_pulse: duration of bit pulse in ns + * @bit_space: duration of bit space (for logic 0 and 1) in ns + * @trailer_pulse: duration of trailer pulse in ns + * @trailer_space: duration of trailer space in ns + * @msb_first: 1 if most significant bit is sent first + */ +struct ir_raw_timings_pd { + unsigned int header_pulse; + unsigned int header_space; + unsigned int bit_pulse; + unsigned int bit_space[2]; + unsigned int trailer_pulse; + unsigned int trailer_space; + unsigned int msb_first:1; +}; + +int ir_raw_gen_pd(struct ir_raw_event **ev, unsigned int max, + const struct ir_raw_timings_pd *timings, + unsigned int n, u64 data); + +/** + * struct ir_raw_timings_pl - pulse-length modulation timings + * @header_pulse: duration of header pulse in ns (0 for none) + * @bit_space: duration of bit space in ns + * @bit_pulse: duration of bit pulse (for logic 0 and 1) in ns + * @trailer_space: duration of trailer space in ns + * @msb_first: 1 if most significant bit is sent first + */ +struct ir_raw_timings_pl { + unsigned int header_pulse; + unsigned int bit_space; + unsigned int bit_pulse[2]; + unsigned int trailer_space; + unsigned int msb_first:1; +}; + +int ir_raw_gen_pl(struct ir_raw_event **ev, unsigned int max, + const struct ir_raw_timings_pl *timings, + unsigned int n, u64 data); + +/* + * Routines from rc-raw.c to be used internally and by decoders + */ +u64 ir_raw_get_allowed_protocols(void); +int ir_raw_event_prepare(struct rc_dev *dev); +int ir_raw_event_register(struct rc_dev *dev); +void ir_raw_event_free(struct rc_dev *dev); +void ir_raw_event_unregister(struct rc_dev *dev); +int ir_raw_handler_register(struct ir_raw_handler *ir_raw_handler); +void ir_raw_handler_unregister(struct ir_raw_handler *ir_raw_handler); +void ir_raw_load_modules(u64 *protocols); +void ir_raw_init(void); + +/* + * lirc interface + */ +#ifdef CONFIG_LIRC +int lirc_dev_init(void); +void lirc_dev_exit(void); +void lirc_raw_event(struct rc_dev *dev, struct ir_raw_event ev); +void lirc_scancode_event(struct rc_dev *dev, struct lirc_scancode *lsc); +int lirc_register(struct rc_dev *dev); +void lirc_unregister(struct rc_dev *dev); +struct rc_dev *rc_dev_get_from_fd(int fd); +#else +static inline int lirc_dev_init(void) { return 0; } +static inline void lirc_dev_exit(void) {} +static inline void lirc_raw_event(struct rc_dev *dev, + struct ir_raw_event ev) { } +static inline void lirc_scancode_event(struct rc_dev *dev, + struct lirc_scancode *lsc) { } +static inline int lirc_register(struct rc_dev *dev) { return 0; } +static inline void lirc_unregister(struct rc_dev *dev) { } +#endif + +/* + * bpf interface + */ +#ifdef CONFIG_BPF_LIRC_MODE2 +void lirc_bpf_free(struct rc_dev *dev); +void lirc_bpf_run(struct rc_dev *dev, u32 sample); +#else +static inline void lirc_bpf_free(struct rc_dev *dev) { } +static inline void lirc_bpf_run(struct rc_dev *dev, u32 sample) { } +#endif + +#endif /* _RC_CORE_PRIV */ -- cgit v1.2.3