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/core/seq/oss/seq_oss_init.c | 505 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 505 insertions(+) create mode 100644 sound/core/seq/oss/seq_oss_init.c (limited to 'sound/core/seq/oss/seq_oss_init.c') diff --git a/sound/core/seq/oss/seq_oss_init.c b/sound/core/seq/oss/seq_oss_init.c new file mode 100644 index 000000000..42d4e7535 --- /dev/null +++ b/sound/core/seq/oss/seq_oss_init.c @@ -0,0 +1,505 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * OSS compatible sequencer driver + * + * open/close and reset interface + * + * Copyright (C) 1998-1999 Takashi Iwai + */ + +#include "seq_oss_device.h" +#include "seq_oss_synth.h" +#include "seq_oss_midi.h" +#include "seq_oss_writeq.h" +#include "seq_oss_readq.h" +#include "seq_oss_timer.h" +#include "seq_oss_event.h" +#include +#include +#include +#include +#include + +/* + * common variables + */ +static int maxqlen = SNDRV_SEQ_OSS_MAX_QLEN; +module_param(maxqlen, int, 0444); +MODULE_PARM_DESC(maxqlen, "maximum queue length"); + +static int system_client = -1; /* ALSA sequencer client number */ +static int system_port = -1; + +static int num_clients; +static struct seq_oss_devinfo *client_table[SNDRV_SEQ_OSS_MAX_CLIENTS]; + + +/* + * prototypes + */ +static int receive_announce(struct snd_seq_event *ev, int direct, void *private, int atomic, int hop); +static int translate_mode(struct file *file); +static int create_port(struct seq_oss_devinfo *dp); +static int delete_port(struct seq_oss_devinfo *dp); +static int alloc_seq_queue(struct seq_oss_devinfo *dp); +static int delete_seq_queue(int queue); +static void free_devinfo(void *private); + +#define call_ctl(type,rec) snd_seq_kernel_client_ctl(system_client, type, rec) + + +/* call snd_seq_oss_midi_lookup_ports() asynchronously */ +static void async_call_lookup_ports(struct work_struct *work) +{ + snd_seq_oss_midi_lookup_ports(system_client); +} + +static DECLARE_WORK(async_lookup_work, async_call_lookup_ports); + +/* + * create sequencer client for OSS sequencer + */ +int __init +snd_seq_oss_create_client(void) +{ + int rc; + struct snd_seq_port_info *port; + struct snd_seq_port_callback port_callback; + + port = kzalloc(sizeof(*port), GFP_KERNEL); + if (!port) { + rc = -ENOMEM; + goto __error; + } + + /* create ALSA client */ + rc = snd_seq_create_kernel_client(NULL, SNDRV_SEQ_CLIENT_OSS, + "OSS sequencer"); + if (rc < 0) + goto __error; + + system_client = rc; + + /* create announcement receiver port */ + strcpy(port->name, "Receiver"); + port->addr.client = system_client; + port->capability = SNDRV_SEQ_PORT_CAP_WRITE; /* receive only */ + port->type = 0; + + memset(&port_callback, 0, sizeof(port_callback)); + /* don't set port_callback.owner here. otherwise the module counter + * is incremented and we can no longer release the module.. + */ + port_callback.event_input = receive_announce; + port->kernel = &port_callback; + + if (call_ctl(SNDRV_SEQ_IOCTL_CREATE_PORT, port) >= 0) { + struct snd_seq_port_subscribe subs; + + system_port = port->addr.port; + memset(&subs, 0, sizeof(subs)); + subs.sender.client = SNDRV_SEQ_CLIENT_SYSTEM; + subs.sender.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE; + subs.dest.client = system_client; + subs.dest.port = system_port; + call_ctl(SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT, &subs); + } + rc = 0; + + /* look up midi devices */ + schedule_work(&async_lookup_work); + + __error: + kfree(port); + return rc; +} + + +/* + * receive annoucement from system port, and check the midi device + */ +static int +receive_announce(struct snd_seq_event *ev, int direct, void *private, int atomic, int hop) +{ + struct snd_seq_port_info pinfo; + + if (atomic) + return 0; /* it must not happen */ + + switch (ev->type) { + case SNDRV_SEQ_EVENT_PORT_START: + case SNDRV_SEQ_EVENT_PORT_CHANGE: + if (ev->data.addr.client == system_client) + break; /* ignore myself */ + memset(&pinfo, 0, sizeof(pinfo)); + pinfo.addr = ev->data.addr; + if (call_ctl(SNDRV_SEQ_IOCTL_GET_PORT_INFO, &pinfo) >= 0) + snd_seq_oss_midi_check_new_port(&pinfo); + break; + + case SNDRV_SEQ_EVENT_PORT_EXIT: + if (ev->data.addr.client == system_client) + break; /* ignore myself */ + snd_seq_oss_midi_check_exit_port(ev->data.addr.client, + ev->data.addr.port); + break; + } + return 0; +} + + +/* + * delete OSS sequencer client + */ +int +snd_seq_oss_delete_client(void) +{ + cancel_work_sync(&async_lookup_work); + if (system_client >= 0) + snd_seq_delete_kernel_client(system_client); + + snd_seq_oss_midi_clear_all(); + + return 0; +} + + +/* + * open sequencer device + */ +int +snd_seq_oss_open(struct file *file, int level) +{ + int i, rc; + struct seq_oss_devinfo *dp; + + dp = kzalloc(sizeof(*dp), GFP_KERNEL); + if (!dp) + return -ENOMEM; + + dp->cseq = system_client; + dp->port = -1; + dp->queue = -1; + + for (i = 0; i < SNDRV_SEQ_OSS_MAX_CLIENTS; i++) { + if (client_table[i] == NULL) + break; + } + + dp->index = i; + if (i >= SNDRV_SEQ_OSS_MAX_CLIENTS) { + pr_debug("ALSA: seq_oss: too many applications\n"); + rc = -ENOMEM; + goto _error; + } + + /* look up synth and midi devices */ + snd_seq_oss_synth_setup(dp); + snd_seq_oss_midi_setup(dp); + + if (dp->synth_opened == 0 && dp->max_mididev == 0) { + /* pr_err("ALSA: seq_oss: no device found\n"); */ + rc = -ENODEV; + goto _error; + } + + /* create port */ + rc = create_port(dp); + if (rc < 0) { + pr_err("ALSA: seq_oss: can't create port\n"); + goto _error; + } + + /* allocate queue */ + rc = alloc_seq_queue(dp); + if (rc < 0) + goto _error; + + /* set address */ + dp->addr.client = dp->cseq; + dp->addr.port = dp->port; + /*dp->addr.queue = dp->queue;*/ + /*dp->addr.channel = 0;*/ + + dp->seq_mode = level; + + /* set up file mode */ + dp->file_mode = translate_mode(file); + + /* initialize read queue */ + if (is_read_mode(dp->file_mode)) { + dp->readq = snd_seq_oss_readq_new(dp, maxqlen); + if (!dp->readq) { + rc = -ENOMEM; + goto _error; + } + } + + /* initialize write queue */ + if (is_write_mode(dp->file_mode)) { + dp->writeq = snd_seq_oss_writeq_new(dp, maxqlen); + if (!dp->writeq) { + rc = -ENOMEM; + goto _error; + } + } + + /* initialize timer */ + dp->timer = snd_seq_oss_timer_new(dp); + if (!dp->timer) { + pr_err("ALSA: seq_oss: can't alloc timer\n"); + rc = -ENOMEM; + goto _error; + } + + /* set private data pointer */ + file->private_data = dp; + + /* set up for mode2 */ + if (level == SNDRV_SEQ_OSS_MODE_MUSIC) + snd_seq_oss_synth_setup_midi(dp); + else if (is_read_mode(dp->file_mode)) + snd_seq_oss_midi_open_all(dp, SNDRV_SEQ_OSS_FILE_READ); + + client_table[dp->index] = dp; + num_clients++; + + return 0; + + _error: + snd_seq_oss_synth_cleanup(dp); + snd_seq_oss_midi_cleanup(dp); + delete_seq_queue(dp->queue); + delete_port(dp); + + return rc; +} + +/* + * translate file flags to private mode + */ +static int +translate_mode(struct file *file) +{ + int file_mode = 0; + if ((file->f_flags & O_ACCMODE) != O_RDONLY) + file_mode |= SNDRV_SEQ_OSS_FILE_WRITE; + if ((file->f_flags & O_ACCMODE) != O_WRONLY) + file_mode |= SNDRV_SEQ_OSS_FILE_READ; + if (file->f_flags & O_NONBLOCK) + file_mode |= SNDRV_SEQ_OSS_FILE_NONBLOCK; + return file_mode; +} + + +/* + * create sequencer port + */ +static int +create_port(struct seq_oss_devinfo *dp) +{ + int rc; + struct snd_seq_port_info port; + struct snd_seq_port_callback callback; + + memset(&port, 0, sizeof(port)); + port.addr.client = dp->cseq; + sprintf(port.name, "Sequencer-%d", dp->index); + port.capability = SNDRV_SEQ_PORT_CAP_READ|SNDRV_SEQ_PORT_CAP_WRITE; /* no subscription */ + port.type = SNDRV_SEQ_PORT_TYPE_SPECIFIC; + port.midi_channels = 128; + port.synth_voices = 128; + + memset(&callback, 0, sizeof(callback)); + callback.owner = THIS_MODULE; + callback.private_data = dp; + callback.event_input = snd_seq_oss_event_input; + callback.private_free = free_devinfo; + port.kernel = &callback; + + rc = call_ctl(SNDRV_SEQ_IOCTL_CREATE_PORT, &port); + if (rc < 0) + return rc; + + dp->port = port.addr.port; + + return 0; +} + +/* + * delete ALSA port + */ +static int +delete_port(struct seq_oss_devinfo *dp) +{ + if (dp->port < 0) { + kfree(dp); + return 0; + } + + return snd_seq_event_port_detach(dp->cseq, dp->port); +} + +/* + * allocate a queue + */ +static int +alloc_seq_queue(struct seq_oss_devinfo *dp) +{ + struct snd_seq_queue_info qinfo; + int rc; + + memset(&qinfo, 0, sizeof(qinfo)); + qinfo.owner = system_client; + qinfo.locked = 1; + strcpy(qinfo.name, "OSS Sequencer Emulation"); + rc = call_ctl(SNDRV_SEQ_IOCTL_CREATE_QUEUE, &qinfo); + if (rc < 0) + return rc; + dp->queue = qinfo.queue; + return 0; +} + +/* + * release queue + */ +static int +delete_seq_queue(int queue) +{ + struct snd_seq_queue_info qinfo; + int rc; + + if (queue < 0) + return 0; + memset(&qinfo, 0, sizeof(qinfo)); + qinfo.queue = queue; + rc = call_ctl(SNDRV_SEQ_IOCTL_DELETE_QUEUE, &qinfo); + if (rc < 0) + pr_err("ALSA: seq_oss: unable to delete queue %d (%d)\n", queue, rc); + return rc; +} + + +/* + * free device informations - private_free callback of port + */ +static void +free_devinfo(void *private) +{ + struct seq_oss_devinfo *dp = (struct seq_oss_devinfo *)private; + + snd_seq_oss_timer_delete(dp->timer); + + snd_seq_oss_writeq_delete(dp->writeq); + + snd_seq_oss_readq_delete(dp->readq); + + kfree(dp); +} + + +/* + * close sequencer device + */ +void +snd_seq_oss_release(struct seq_oss_devinfo *dp) +{ + int queue; + + client_table[dp->index] = NULL; + num_clients--; + + snd_seq_oss_reset(dp); + + snd_seq_oss_synth_cleanup(dp); + snd_seq_oss_midi_cleanup(dp); + + /* clear slot */ + queue = dp->queue; + if (dp->port >= 0) + delete_port(dp); + delete_seq_queue(queue); +} + + +/* + * reset sequencer devices + */ +void +snd_seq_oss_reset(struct seq_oss_devinfo *dp) +{ + int i; + + /* reset all synth devices */ + for (i = 0; i < dp->max_synthdev; i++) + snd_seq_oss_synth_reset(dp, i); + + /* reset all midi devices */ + if (dp->seq_mode != SNDRV_SEQ_OSS_MODE_MUSIC) { + for (i = 0; i < dp->max_mididev; i++) + snd_seq_oss_midi_reset(dp, i); + } + + /* remove queues */ + if (dp->readq) + snd_seq_oss_readq_clear(dp->readq); + if (dp->writeq) + snd_seq_oss_writeq_clear(dp->writeq); + + /* reset timer */ + snd_seq_oss_timer_stop(dp->timer); +} + +#ifdef CONFIG_SND_PROC_FS +/* + * misc. functions for proc interface + */ +char * +enabled_str(int bool) +{ + return bool ? "enabled" : "disabled"; +} + +static const char * +filemode_str(int val) +{ + static const char * const str[] = { + "none", "read", "write", "read/write", + }; + return str[val & SNDRV_SEQ_OSS_FILE_ACMODE]; +} + + +/* + * proc interface + */ +void +snd_seq_oss_system_info_read(struct snd_info_buffer *buf) +{ + int i; + struct seq_oss_devinfo *dp; + + snd_iprintf(buf, "ALSA client number %d\n", system_client); + snd_iprintf(buf, "ALSA receiver port %d\n", system_port); + + snd_iprintf(buf, "\nNumber of applications: %d\n", num_clients); + for (i = 0; i < num_clients; i++) { + snd_iprintf(buf, "\nApplication %d: ", i); + dp = client_table[i]; + if (!dp) { + snd_iprintf(buf, "*empty*\n"); + continue; + } + snd_iprintf(buf, "port %d : queue %d\n", dp->port, dp->queue); + snd_iprintf(buf, " sequencer mode = %s : file open mode = %s\n", + (dp->seq_mode ? "music" : "synth"), + filemode_str(dp->file_mode)); + if (dp->seq_mode) + snd_iprintf(buf, " timer tempo = %d, timebase = %d\n", + dp->timer->oss_tempo, dp->timer->oss_timebase); + snd_iprintf(buf, " max queue length %d\n", maxqlen); + if (is_read_mode(dp->file_mode) && dp->readq) + snd_seq_oss_readq_info_read(dp->readq, buf); + } +} +#endif /* CONFIG_SND_PROC_FS */ -- cgit v1.2.3