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/pci/emu10k1/emumpu401.c | 388 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 388 insertions(+) create mode 100644 sound/pci/emu10k1/emumpu401.c (limited to 'sound/pci/emu10k1/emumpu401.c') diff --git a/sound/pci/emu10k1/emumpu401.c b/sound/pci/emu10k1/emumpu401.c new file mode 100644 index 000000000..3ce9b2129 --- /dev/null +++ b/sound/pci/emu10k1/emumpu401.c @@ -0,0 +1,388 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) by Jaroslav Kysela + * Routines for control of EMU10K1 MPU-401 in UART mode + */ + +#include +#include +#include +#include + +#define EMU10K1_MIDI_MODE_INPUT (1<<0) +#define EMU10K1_MIDI_MODE_OUTPUT (1<<1) + +static inline unsigned char mpu401_read(struct snd_emu10k1 *emu, + struct snd_emu10k1_midi *mpu, int idx) +{ + if (emu->audigy) + return (unsigned char)snd_emu10k1_ptr_read(emu, mpu->port + idx, 0); + else + return inb(emu->port + mpu->port + idx); +} + +static inline void mpu401_write(struct snd_emu10k1 *emu, + struct snd_emu10k1_midi *mpu, int data, int idx) +{ + if (emu->audigy) + snd_emu10k1_ptr_write(emu, mpu->port + idx, 0, data); + else + outb(data, emu->port + mpu->port + idx); +} + +#define mpu401_write_data(emu, mpu, data) mpu401_write(emu, mpu, data, 0) +#define mpu401_write_cmd(emu, mpu, data) mpu401_write(emu, mpu, data, 1) +#define mpu401_read_data(emu, mpu) mpu401_read(emu, mpu, 0) +#define mpu401_read_stat(emu, mpu) mpu401_read(emu, mpu, 1) + +#define mpu401_input_avail(emu,mpu) (!(mpu401_read_stat(emu,mpu) & 0x80)) +#define mpu401_output_ready(emu,mpu) (!(mpu401_read_stat(emu,mpu) & 0x40)) + +#define MPU401_RESET 0xff +#define MPU401_ENTER_UART 0x3f +#define MPU401_ACK 0xfe + +static void mpu401_clear_rx(struct snd_emu10k1 *emu, struct snd_emu10k1_midi *mpu) +{ + int timeout = 100000; + for (; timeout > 0 && mpu401_input_avail(emu, mpu); timeout--) + mpu401_read_data(emu, mpu); +#ifdef CONFIG_SND_DEBUG + if (timeout <= 0) + dev_err(emu->card->dev, + "cmd: clear rx timeout (status = 0x%x)\n", + mpu401_read_stat(emu, mpu)); +#endif +} + +/* + + */ + +static void do_emu10k1_midi_interrupt(struct snd_emu10k1 *emu, struct snd_emu10k1_midi *midi, unsigned int status) +{ + unsigned char byte; + + if (midi->rmidi == NULL) { + snd_emu10k1_intr_disable(emu, midi->tx_enable | midi->rx_enable); + return; + } + + spin_lock(&midi->input_lock); + if ((status & midi->ipr_rx) && mpu401_input_avail(emu, midi)) { + if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) { + mpu401_clear_rx(emu, midi); + } else { + byte = mpu401_read_data(emu, midi); + if (midi->substream_input) + snd_rawmidi_receive(midi->substream_input, &byte, 1); + } + } + spin_unlock(&midi->input_lock); + + spin_lock(&midi->output_lock); + if ((status & midi->ipr_tx) && mpu401_output_ready(emu, midi)) { + if (midi->substream_output && + snd_rawmidi_transmit(midi->substream_output, &byte, 1) == 1) { + mpu401_write_data(emu, midi, byte); + } else { + snd_emu10k1_intr_disable(emu, midi->tx_enable); + } + } + spin_unlock(&midi->output_lock); +} + +static void snd_emu10k1_midi_interrupt(struct snd_emu10k1 *emu, unsigned int status) +{ + do_emu10k1_midi_interrupt(emu, &emu->midi, status); +} + +static void snd_emu10k1_midi_interrupt2(struct snd_emu10k1 *emu, unsigned int status) +{ + do_emu10k1_midi_interrupt(emu, &emu->midi2, status); +} + +static int snd_emu10k1_midi_cmd(struct snd_emu10k1 * emu, struct snd_emu10k1_midi *midi, unsigned char cmd, int ack) +{ + unsigned long flags; + int timeout, ok; + + spin_lock_irqsave(&midi->input_lock, flags); + mpu401_write_data(emu, midi, 0x00); + /* mpu401_clear_rx(emu, midi); */ + + mpu401_write_cmd(emu, midi, cmd); + if (ack) { + ok = 0; + timeout = 10000; + while (!ok && timeout-- > 0) { + if (mpu401_input_avail(emu, midi)) { + if (mpu401_read_data(emu, midi) == MPU401_ACK) + ok = 1; + } + } + if (!ok && mpu401_read_data(emu, midi) == MPU401_ACK) + ok = 1; + } else { + ok = 1; + } + spin_unlock_irqrestore(&midi->input_lock, flags); + if (!ok) { + dev_err(emu->card->dev, + "midi_cmd: 0x%x failed at 0x%lx (status = 0x%x, data = 0x%x)!!!\n", + cmd, emu->port, + mpu401_read_stat(emu, midi), + mpu401_read_data(emu, midi)); + return 1; + } + return 0; +} + +static int snd_emu10k1_midi_input_open(struct snd_rawmidi_substream *substream) +{ + struct snd_emu10k1 *emu; + struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data; + unsigned long flags; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return -ENXIO; + spin_lock_irqsave(&midi->open_lock, flags); + midi->midi_mode |= EMU10K1_MIDI_MODE_INPUT; + midi->substream_input = substream; + if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT)) { + spin_unlock_irqrestore(&midi->open_lock, flags); + if (snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 1)) + goto error_out; + if (snd_emu10k1_midi_cmd(emu, midi, MPU401_ENTER_UART, 1)) + goto error_out; + } else { + spin_unlock_irqrestore(&midi->open_lock, flags); + } + return 0; + +error_out: + return -EIO; +} + +static int snd_emu10k1_midi_output_open(struct snd_rawmidi_substream *substream) +{ + struct snd_emu10k1 *emu; + struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data; + unsigned long flags; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return -ENXIO; + spin_lock_irqsave(&midi->open_lock, flags); + midi->midi_mode |= EMU10K1_MIDI_MODE_OUTPUT; + midi->substream_output = substream; + if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) { + spin_unlock_irqrestore(&midi->open_lock, flags); + if (snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 1)) + goto error_out; + if (snd_emu10k1_midi_cmd(emu, midi, MPU401_ENTER_UART, 1)) + goto error_out; + } else { + spin_unlock_irqrestore(&midi->open_lock, flags); + } + return 0; + +error_out: + return -EIO; +} + +static int snd_emu10k1_midi_input_close(struct snd_rawmidi_substream *substream) +{ + struct snd_emu10k1 *emu; + struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data; + unsigned long flags; + int err = 0; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return -ENXIO; + spin_lock_irqsave(&midi->open_lock, flags); + snd_emu10k1_intr_disable(emu, midi->rx_enable); + midi->midi_mode &= ~EMU10K1_MIDI_MODE_INPUT; + midi->substream_input = NULL; + if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT)) { + spin_unlock_irqrestore(&midi->open_lock, flags); + err = snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 0); + } else { + spin_unlock_irqrestore(&midi->open_lock, flags); + } + return err; +} + +static int snd_emu10k1_midi_output_close(struct snd_rawmidi_substream *substream) +{ + struct snd_emu10k1 *emu; + struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data; + unsigned long flags; + int err = 0; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return -ENXIO; + spin_lock_irqsave(&midi->open_lock, flags); + snd_emu10k1_intr_disable(emu, midi->tx_enable); + midi->midi_mode &= ~EMU10K1_MIDI_MODE_OUTPUT; + midi->substream_output = NULL; + if (!(midi->midi_mode & EMU10K1_MIDI_MODE_INPUT)) { + spin_unlock_irqrestore(&midi->open_lock, flags); + err = snd_emu10k1_midi_cmd(emu, midi, MPU401_RESET, 0); + } else { + spin_unlock_irqrestore(&midi->open_lock, flags); + } + return err; +} + +static void snd_emu10k1_midi_input_trigger(struct snd_rawmidi_substream *substream, int up) +{ + struct snd_emu10k1 *emu; + struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data; + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return; + + if (up) + snd_emu10k1_intr_enable(emu, midi->rx_enable); + else + snd_emu10k1_intr_disable(emu, midi->rx_enable); +} + +static void snd_emu10k1_midi_output_trigger(struct snd_rawmidi_substream *substream, int up) +{ + struct snd_emu10k1 *emu; + struct snd_emu10k1_midi *midi = (struct snd_emu10k1_midi *)substream->rmidi->private_data; + unsigned long flags; + + emu = midi->emu; + if (snd_BUG_ON(!emu)) + return; + + if (up) { + int max = 4; + unsigned char byte; + + /* try to send some amount of bytes here before interrupts */ + spin_lock_irqsave(&midi->output_lock, flags); + while (max > 0) { + if (mpu401_output_ready(emu, midi)) { + if (!(midi->midi_mode & EMU10K1_MIDI_MODE_OUTPUT) || + snd_rawmidi_transmit(substream, &byte, 1) != 1) { + /* no more data */ + spin_unlock_irqrestore(&midi->output_lock, flags); + return; + } + mpu401_write_data(emu, midi, byte); + max--; + } else { + break; + } + } + spin_unlock_irqrestore(&midi->output_lock, flags); + snd_emu10k1_intr_enable(emu, midi->tx_enable); + } else { + snd_emu10k1_intr_disable(emu, midi->tx_enable); + } +} + +/* + + */ + +static const struct snd_rawmidi_ops snd_emu10k1_midi_output = +{ + .open = snd_emu10k1_midi_output_open, + .close = snd_emu10k1_midi_output_close, + .trigger = snd_emu10k1_midi_output_trigger, +}; + +static const struct snd_rawmidi_ops snd_emu10k1_midi_input = +{ + .open = snd_emu10k1_midi_input_open, + .close = snd_emu10k1_midi_input_close, + .trigger = snd_emu10k1_midi_input_trigger, +}; + +static void snd_emu10k1_midi_free(struct snd_rawmidi *rmidi) +{ + struct snd_emu10k1_midi *midi = rmidi->private_data; + midi->interrupt = NULL; + midi->rmidi = NULL; +} + +static int emu10k1_midi_init(struct snd_emu10k1 *emu, struct snd_emu10k1_midi *midi, int device, char *name) +{ + struct snd_rawmidi *rmidi; + int err; + + err = snd_rawmidi_new(emu->card, name, device, 1, 1, &rmidi); + if (err < 0) + return err; + midi->emu = emu; + spin_lock_init(&midi->open_lock); + spin_lock_init(&midi->input_lock); + spin_lock_init(&midi->output_lock); + strcpy(rmidi->name, name); + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_emu10k1_midi_output); + snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_emu10k1_midi_input); + rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | + SNDRV_RAWMIDI_INFO_INPUT | + SNDRV_RAWMIDI_INFO_DUPLEX; + rmidi->private_data = midi; + rmidi->private_free = snd_emu10k1_midi_free; + midi->rmidi = rmidi; + return 0; +} + +int snd_emu10k1_midi(struct snd_emu10k1 *emu) +{ + struct snd_emu10k1_midi *midi = &emu->midi; + int err; + + err = emu10k1_midi_init(emu, midi, 0, "EMU10K1 MPU-401 (UART)"); + if (err < 0) + return err; + + midi->tx_enable = INTE_MIDITXENABLE; + midi->rx_enable = INTE_MIDIRXENABLE; + midi->port = MUDATA; + midi->ipr_tx = IPR_MIDITRANSBUFEMPTY; + midi->ipr_rx = IPR_MIDIRECVBUFEMPTY; + midi->interrupt = snd_emu10k1_midi_interrupt; + return 0; +} + +int snd_emu10k1_audigy_midi(struct snd_emu10k1 *emu) +{ + struct snd_emu10k1_midi *midi; + int err; + + midi = &emu->midi; + err = emu10k1_midi_init(emu, midi, 0, "Audigy MPU-401 (UART)"); + if (err < 0) + return err; + + midi->tx_enable = INTE_MIDITXENABLE; + midi->rx_enable = INTE_MIDIRXENABLE; + midi->port = A_MUDATA1; + midi->ipr_tx = IPR_MIDITRANSBUFEMPTY; + midi->ipr_rx = IPR_MIDIRECVBUFEMPTY; + midi->interrupt = snd_emu10k1_midi_interrupt; + + midi = &emu->midi2; + err = emu10k1_midi_init(emu, midi, 1, "Audigy MPU-401 #2"); + if (err < 0) + return err; + + midi->tx_enable = INTE_A_MIDITXENABLE2; + midi->rx_enable = INTE_A_MIDIRXENABLE2; + midi->port = A_MUDATA2; + midi->ipr_tx = IPR_A_MIDITRANSBUFEMPTY2; + midi->ipr_rx = IPR_A_MIDIRECVBUFEMPTY2; + midi->interrupt = snd_emu10k1_midi_interrupt2; + return 0; +} -- cgit v1.2.3