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(). ... --- sound/usb/6fire/comm.c | 200 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 200 insertions(+) create mode 100644 sound/usb/6fire/comm.c (limited to 'sound/usb/6fire/comm.c') diff --git a/sound/usb/6fire/comm.c b/sound/usb/6fire/comm.c new file mode 100644 index 000000000..49629d4bb --- /dev/null +++ b/sound/usb/6fire/comm.c @@ -0,0 +1,200 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Linux driver for TerraTec DMX 6Fire USB + * + * Device communications + * + * Author: Torsten Schenk + * Created: Jan 01, 2011 + * Copyright: (C) Torsten Schenk + */ + +#include "comm.h" +#include "chip.h" +#include "midi.h" + +enum { + COMM_EP = 1, + COMM_FPGA_EP = 2 +}; + +static void usb6fire_comm_init_urb(struct comm_runtime *rt, struct urb *urb, + u8 *buffer, void *context, void(*handler)(struct urb *urb)) +{ + usb_init_urb(urb); + urb->transfer_buffer = buffer; + urb->pipe = usb_sndintpipe(rt->chip->dev, COMM_EP); + urb->complete = handler; + urb->context = context; + urb->interval = 1; + urb->dev = rt->chip->dev; +} + +static void usb6fire_comm_receiver_handler(struct urb *urb) +{ + struct comm_runtime *rt = urb->context; + struct midi_runtime *midi_rt = rt->chip->midi; + + if (!urb->status) { + if (rt->receiver_buffer[0] == 0x10) /* midi in event */ + if (midi_rt) + midi_rt->in_received(midi_rt, + rt->receiver_buffer + 2, + rt->receiver_buffer[1]); + } + + if (!rt->chip->shutdown) { + urb->status = 0; + urb->actual_length = 0; + if (usb_submit_urb(urb, GFP_ATOMIC) < 0) + dev_warn(&urb->dev->dev, + "comm data receiver aborted.\n"); + } +} + +static void usb6fire_comm_init_buffer(u8 *buffer, u8 id, u8 request, + u8 reg, u8 vl, u8 vh) +{ + buffer[0] = 0x01; + buffer[2] = request; + buffer[3] = id; + switch (request) { + case 0x02: + buffer[1] = 0x05; /* length (starting at buffer[2]) */ + buffer[4] = reg; + buffer[5] = vl; + buffer[6] = vh; + break; + + case 0x12: + buffer[1] = 0x0b; /* length (starting at buffer[2]) */ + buffer[4] = 0x00; + buffer[5] = 0x18; + buffer[6] = 0x05; + buffer[7] = 0x00; + buffer[8] = 0x01; + buffer[9] = 0x00; + buffer[10] = 0x9e; + buffer[11] = reg; + buffer[12] = vl; + break; + + case 0x20: + case 0x21: + case 0x22: + buffer[1] = 0x04; + buffer[4] = reg; + buffer[5] = vl; + break; + } +} + +static int usb6fire_comm_send_buffer(u8 *buffer, struct usb_device *dev) +{ + int ret; + int actual_len; + + ret = usb_interrupt_msg(dev, usb_sndintpipe(dev, COMM_EP), + buffer, buffer[1] + 2, &actual_len, 1000); + if (ret < 0) + return ret; + else if (actual_len != buffer[1] + 2) + return -EIO; + return 0; +} + +static int usb6fire_comm_write8(struct comm_runtime *rt, u8 request, + u8 reg, u8 value) +{ + u8 *buffer; + int ret; + + /* 13: maximum length of message */ + buffer = kmalloc(13, GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + usb6fire_comm_init_buffer(buffer, 0x00, request, reg, value, 0x00); + ret = usb6fire_comm_send_buffer(buffer, rt->chip->dev); + + kfree(buffer); + return ret; +} + +static int usb6fire_comm_write16(struct comm_runtime *rt, u8 request, + u8 reg, u8 vl, u8 vh) +{ + u8 *buffer; + int ret; + + /* 13: maximum length of message */ + buffer = kmalloc(13, GFP_KERNEL); + if (!buffer) + return -ENOMEM; + + usb6fire_comm_init_buffer(buffer, 0x00, request, reg, vl, vh); + ret = usb6fire_comm_send_buffer(buffer, rt->chip->dev); + + kfree(buffer); + return ret; +} + +int usb6fire_comm_init(struct sfire_chip *chip) +{ + struct comm_runtime *rt = kzalloc(sizeof(struct comm_runtime), + GFP_KERNEL); + struct urb *urb; + int ret; + + if (!rt) + return -ENOMEM; + + rt->receiver_buffer = kzalloc(COMM_RECEIVER_BUFSIZE, GFP_KERNEL); + if (!rt->receiver_buffer) { + kfree(rt); + return -ENOMEM; + } + + urb = &rt->receiver; + rt->serial = 1; + rt->chip = chip; + usb_init_urb(urb); + rt->init_urb = usb6fire_comm_init_urb; + rt->write8 = usb6fire_comm_write8; + rt->write16 = usb6fire_comm_write16; + + /* submit an urb that receives communication data from device */ + urb->transfer_buffer = rt->receiver_buffer; + urb->transfer_buffer_length = COMM_RECEIVER_BUFSIZE; + urb->pipe = usb_rcvintpipe(chip->dev, COMM_EP); + urb->dev = chip->dev; + urb->complete = usb6fire_comm_receiver_handler; + urb->context = rt; + urb->interval = 1; + ret = usb_submit_urb(urb, GFP_KERNEL); + if (ret < 0) { + kfree(rt->receiver_buffer); + kfree(rt); + dev_err(&chip->dev->dev, "cannot create comm data receiver."); + return ret; + } + chip->comm = rt; + return 0; +} + +void usb6fire_comm_abort(struct sfire_chip *chip) +{ + struct comm_runtime *rt = chip->comm; + + if (rt) + usb_poison_urb(&rt->receiver); +} + +void usb6fire_comm_destroy(struct sfire_chip *chip) +{ + struct comm_runtime *rt = chip->comm; + + kfree(rt->receiver_buffer); + kfree(rt); + chip->comm = NULL; +} -- cgit v1.2.3