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/line6/capture.c | 294 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 294 insertions(+) create mode 100644 sound/usb/line6/capture.c (limited to 'sound/usb/line6/capture.c') diff --git a/sound/usb/line6/capture.c b/sound/usb/line6/capture.c new file mode 100644 index 000000000..970c9bdce --- /dev/null +++ b/sound/usb/line6/capture.c @@ -0,0 +1,294 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Line 6 Linux USB driver + * + * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at) + */ + +#include +#include +#include +#include + +#include "capture.h" +#include "driver.h" +#include "pcm.h" + +/* + Find a free URB and submit it. + must be called in line6pcm->in.lock context +*/ +static int submit_audio_in_urb(struct snd_line6_pcm *line6pcm) +{ + int index; + int i, urb_size; + int ret; + struct urb *urb_in; + + index = find_first_zero_bit(&line6pcm->in.active_urbs, + line6pcm->line6->iso_buffers); + + if (index < 0 || index >= line6pcm->line6->iso_buffers) { + dev_err(line6pcm->line6->ifcdev, "no free URB found\n"); + return -EINVAL; + } + + urb_in = line6pcm->in.urbs[index]; + urb_size = 0; + + for (i = 0; i < LINE6_ISO_PACKETS; ++i) { + struct usb_iso_packet_descriptor *fin = + &urb_in->iso_frame_desc[i]; + fin->offset = urb_size; + fin->length = line6pcm->max_packet_size_in; + urb_size += line6pcm->max_packet_size_in; + } + + urb_in->transfer_buffer = + line6pcm->in.buffer + + index * LINE6_ISO_PACKETS * line6pcm->max_packet_size_in; + urb_in->transfer_buffer_length = urb_size; + urb_in->context = line6pcm; + + ret = usb_submit_urb(urb_in, GFP_ATOMIC); + + if (ret == 0) + set_bit(index, &line6pcm->in.active_urbs); + else + dev_err(line6pcm->line6->ifcdev, + "URB in #%d submission failed (%d)\n", index, ret); + + return 0; +} + +/* + Submit all currently available capture URBs. + must be called in line6pcm->in.lock context +*/ +int line6_submit_audio_in_all_urbs(struct snd_line6_pcm *line6pcm) +{ + int ret = 0, i; + + for (i = 0; i < line6pcm->line6->iso_buffers; ++i) { + ret = submit_audio_in_urb(line6pcm); + if (ret < 0) + break; + } + + return ret; +} + +/* + Copy data into ALSA capture buffer. +*/ +void line6_capture_copy(struct snd_line6_pcm *line6pcm, char *fbuf, int fsize) +{ + struct snd_pcm_substream *substream = + get_substream(line6pcm, SNDRV_PCM_STREAM_CAPTURE); + struct snd_pcm_runtime *runtime = substream->runtime; + const int bytes_per_frame = + line6pcm->properties->bytes_per_channel * + line6pcm->properties->capture_hw.channels_max; + int frames = fsize / bytes_per_frame; + + if (runtime == NULL) + return; + + if (line6pcm->in.pos_done + frames > runtime->buffer_size) { + /* + The transferred area goes over buffer boundary, + copy two separate chunks. + */ + int len; + + len = runtime->buffer_size - line6pcm->in.pos_done; + + if (len > 0) { + memcpy(runtime->dma_area + + line6pcm->in.pos_done * bytes_per_frame, fbuf, + len * bytes_per_frame); + memcpy(runtime->dma_area, fbuf + len * bytes_per_frame, + (frames - len) * bytes_per_frame); + } else { + /* this is somewhat paranoid */ + dev_err(line6pcm->line6->ifcdev, + "driver bug: len = %d\n", len); + } + } else { + /* copy single chunk */ + memcpy(runtime->dma_area + + line6pcm->in.pos_done * bytes_per_frame, fbuf, fsize); + } + + line6pcm->in.pos_done += frames; + if (line6pcm->in.pos_done >= runtime->buffer_size) + line6pcm->in.pos_done -= runtime->buffer_size; +} + +void line6_capture_check_period(struct snd_line6_pcm *line6pcm, int length) +{ + struct snd_pcm_substream *substream = + get_substream(line6pcm, SNDRV_PCM_STREAM_CAPTURE); + + line6pcm->in.bytes += length; + if (line6pcm->in.bytes >= line6pcm->in.period) { + line6pcm->in.bytes %= line6pcm->in.period; + spin_unlock(&line6pcm->in.lock); + snd_pcm_period_elapsed(substream); + spin_lock(&line6pcm->in.lock); + } +} + +/* + * Callback for completed capture URB. + */ +static void audio_in_callback(struct urb *urb) +{ + int i, index, length = 0, shutdown = 0; + unsigned long flags; + + struct snd_line6_pcm *line6pcm = (struct snd_line6_pcm *)urb->context; + + line6pcm->in.last_frame = urb->start_frame; + + /* find index of URB */ + for (index = 0; index < line6pcm->line6->iso_buffers; ++index) + if (urb == line6pcm->in.urbs[index]) + break; + + spin_lock_irqsave(&line6pcm->in.lock, flags); + + for (i = 0; i < LINE6_ISO_PACKETS; ++i) { + char *fbuf; + int fsize; + struct usb_iso_packet_descriptor *fin = &urb->iso_frame_desc[i]; + + if (fin->status == -EXDEV) { + shutdown = 1; + break; + } + + fbuf = urb->transfer_buffer + fin->offset; + fsize = fin->actual_length; + + if (fsize > line6pcm->max_packet_size_in) { + dev_err(line6pcm->line6->ifcdev, + "driver and/or device bug: packet too large (%d > %d)\n", + fsize, line6pcm->max_packet_size_in); + } + + length += fsize; + + BUILD_BUG_ON_MSG(LINE6_ISO_PACKETS != 1, + "The following code assumes LINE6_ISO_PACKETS == 1"); + /* TODO: + * Also, if iso_buffers != 2, the prev frame is almost random at + * playback side. + * This needs to be redesigned. It should be "stable", but we may + * experience sync problems on such high-speed configs. + */ + + line6pcm->prev_fbuf = fbuf; + line6pcm->prev_fsize = fsize / + (line6pcm->properties->bytes_per_channel * + line6pcm->properties->capture_hw.channels_max); + + if (!test_bit(LINE6_STREAM_IMPULSE, &line6pcm->in.running) && + test_bit(LINE6_STREAM_PCM, &line6pcm->in.running) && + fsize > 0) + line6_capture_copy(line6pcm, fbuf, fsize); + } + + clear_bit(index, &line6pcm->in.active_urbs); + + if (test_and_clear_bit(index, &line6pcm->in.unlink_urbs)) + shutdown = 1; + + if (!shutdown) { + submit_audio_in_urb(line6pcm); + + if (!test_bit(LINE6_STREAM_IMPULSE, &line6pcm->in.running) && + test_bit(LINE6_STREAM_PCM, &line6pcm->in.running)) + line6_capture_check_period(line6pcm, length); + } + + spin_unlock_irqrestore(&line6pcm->in.lock, flags); +} + +/* open capture callback */ +static int snd_line6_capture_open(struct snd_pcm_substream *substream) +{ + int err; + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); + + err = snd_pcm_hw_constraint_ratdens(runtime, 0, + SNDRV_PCM_HW_PARAM_RATE, + &line6pcm->properties->rates); + if (err < 0) + return err; + + line6_pcm_acquire(line6pcm, LINE6_STREAM_CAPTURE_HELPER, false); + + runtime->hw = line6pcm->properties->capture_hw; + return 0; +} + +/* close capture callback */ +static int snd_line6_capture_close(struct snd_pcm_substream *substream) +{ + struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream); + + line6_pcm_release(line6pcm, LINE6_STREAM_CAPTURE_HELPER); + return 0; +} + +/* capture operators */ +const struct snd_pcm_ops snd_line6_capture_ops = { + .open = snd_line6_capture_open, + .close = snd_line6_capture_close, + .hw_params = snd_line6_hw_params, + .hw_free = snd_line6_hw_free, + .prepare = snd_line6_prepare, + .trigger = snd_line6_trigger, + .pointer = snd_line6_pointer, +}; + +int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm) +{ + struct usb_line6 *line6 = line6pcm->line6; + int i; + + line6pcm->in.urbs = kcalloc(line6->iso_buffers, sizeof(struct urb *), + GFP_KERNEL); + if (line6pcm->in.urbs == NULL) + return -ENOMEM; + + /* create audio URBs and fill in constant values: */ + for (i = 0; i < line6->iso_buffers; ++i) { + struct urb *urb; + + /* URB for audio in: */ + urb = line6pcm->in.urbs[i] = + usb_alloc_urb(LINE6_ISO_PACKETS, GFP_KERNEL); + + if (urb == NULL) + return -ENOMEM; + + urb->dev = line6->usbdev; + urb->pipe = + usb_rcvisocpipe(line6->usbdev, + line6->properties->ep_audio_r & + USB_ENDPOINT_NUMBER_MASK); + urb->transfer_flags = URB_ISO_ASAP; + urb->start_frame = -1; + urb->number_of_packets = LINE6_ISO_PACKETS; + urb->interval = LINE6_ISO_INTERVAL; + urb->error_count = 0; + urb->complete = audio_in_callback; + if (usb_urb_ep_type_check(urb)) + return -EINVAL; + } + + return 0; +} -- cgit v1.2.3