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/firewire/firedtv-fw.c | 432 ++++++++++++++++++++++++++++++++++++ 1 file changed, 432 insertions(+) create mode 100644 drivers/media/firewire/firedtv-fw.c (limited to 'drivers/media/firewire/firedtv-fw.c') diff --git a/drivers/media/firewire/firedtv-fw.c b/drivers/media/firewire/firedtv-fw.c new file mode 100644 index 000000000..5f6e97a8d --- /dev/null +++ b/drivers/media/firewire/firedtv-fw.c @@ -0,0 +1,432 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * FireDTV driver -- firewire I/O backend + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include "firedtv.h" + +static LIST_HEAD(node_list); +static DEFINE_SPINLOCK(node_list_lock); + +static inline struct fw_device *device_of(struct firedtv *fdtv) +{ + return fw_device(fdtv->device->parent); +} + +static int node_req(struct firedtv *fdtv, u64 addr, void *data, size_t len, + int tcode) +{ + struct fw_device *device = device_of(fdtv); + int rcode, generation = device->generation; + + smp_rmb(); /* node_id vs. generation */ + + rcode = fw_run_transaction(device->card, tcode, device->node_id, + generation, device->max_speed, addr, data, len); + + return rcode != RCODE_COMPLETE ? -EIO : 0; +} + +int fdtv_lock(struct firedtv *fdtv, u64 addr, void *data) +{ + return node_req(fdtv, addr, data, 8, TCODE_LOCK_COMPARE_SWAP); +} + +int fdtv_read(struct firedtv *fdtv, u64 addr, void *data) +{ + return node_req(fdtv, addr, data, 4, TCODE_READ_QUADLET_REQUEST); +} + +int fdtv_write(struct firedtv *fdtv, u64 addr, void *data, size_t len) +{ + return node_req(fdtv, addr, data, len, TCODE_WRITE_BLOCK_REQUEST); +} + +#define ISO_HEADER_SIZE 4 +#define CIP_HEADER_SIZE 8 +#define MPEG2_TS_HEADER_SIZE 4 +#define MPEG2_TS_SOURCE_PACKET_SIZE (4 + 188) + +#define MAX_PACKET_SIZE 1024 /* 776, rounded up to 2^n */ +#define PACKETS_PER_PAGE (PAGE_SIZE / MAX_PACKET_SIZE) +#define N_PACKETS 64 /* buffer size */ +#define N_PAGES DIV_ROUND_UP(N_PACKETS, PACKETS_PER_PAGE) +#define IRQ_INTERVAL 16 + +struct fdtv_ir_context { + struct fw_iso_context *context; + struct fw_iso_buffer buffer; + int interrupt_packet; + int current_packet; + char *pages[N_PAGES]; +}; + +static int queue_iso(struct fdtv_ir_context *ctx, int index) +{ + struct fw_iso_packet p; + + p.payload_length = MAX_PACKET_SIZE; + p.interrupt = !(++ctx->interrupt_packet & (IRQ_INTERVAL - 1)); + p.skip = 0; + p.header_length = ISO_HEADER_SIZE; + + return fw_iso_context_queue(ctx->context, &p, &ctx->buffer, + index * MAX_PACKET_SIZE); +} + +static void handle_iso(struct fw_iso_context *context, u32 cycle, + size_t header_length, void *header, void *data) +{ + struct firedtv *fdtv = data; + struct fdtv_ir_context *ctx = fdtv->ir_context; + __be32 *h, *h_end; + int length, err, i = ctx->current_packet; + char *p, *p_end; + + for (h = header, h_end = h + header_length / 4; h < h_end; h++) { + length = be32_to_cpup(h) >> 16; + if (unlikely(length > MAX_PACKET_SIZE)) { + dev_err(fdtv->device, "length = %d\n", length); + length = MAX_PACKET_SIZE; + } + + p = ctx->pages[i / PACKETS_PER_PAGE] + + (i % PACKETS_PER_PAGE) * MAX_PACKET_SIZE; + p_end = p + length; + + for (p += CIP_HEADER_SIZE + MPEG2_TS_HEADER_SIZE; p < p_end; + p += MPEG2_TS_SOURCE_PACKET_SIZE) + dvb_dmx_swfilter_packets(&fdtv->demux, p, 1); + + err = queue_iso(ctx, i); + if (unlikely(err)) + dev_err(fdtv->device, "requeue failed\n"); + + i = (i + 1) & (N_PACKETS - 1); + } + fw_iso_context_queue_flush(ctx->context); + ctx->current_packet = i; +} + +int fdtv_start_iso(struct firedtv *fdtv) +{ + struct fdtv_ir_context *ctx; + struct fw_device *device = device_of(fdtv); + int i, err; + + ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->context = fw_iso_context_create(device->card, + FW_ISO_CONTEXT_RECEIVE, fdtv->isochannel, + device->max_speed, ISO_HEADER_SIZE, handle_iso, fdtv); + if (IS_ERR(ctx->context)) { + err = PTR_ERR(ctx->context); + goto fail_free; + } + + err = fw_iso_buffer_init(&ctx->buffer, device->card, + N_PAGES, DMA_FROM_DEVICE); + if (err) + goto fail_context_destroy; + + ctx->interrupt_packet = 0; + ctx->current_packet = 0; + + for (i = 0; i < N_PAGES; i++) + ctx->pages[i] = page_address(ctx->buffer.pages[i]); + + for (i = 0; i < N_PACKETS; i++) { + err = queue_iso(ctx, i); + if (err) + goto fail; + } + + err = fw_iso_context_start(ctx->context, -1, 0, + FW_ISO_CONTEXT_MATCH_ALL_TAGS); + if (err) + goto fail; + + fdtv->ir_context = ctx; + + return 0; +fail: + fw_iso_buffer_destroy(&ctx->buffer, device->card); +fail_context_destroy: + fw_iso_context_destroy(ctx->context); +fail_free: + kfree(ctx); + + return err; +} + +void fdtv_stop_iso(struct firedtv *fdtv) +{ + struct fdtv_ir_context *ctx = fdtv->ir_context; + + fw_iso_context_stop(ctx->context); + fw_iso_buffer_destroy(&ctx->buffer, device_of(fdtv)->card); + fw_iso_context_destroy(ctx->context); + kfree(ctx); +} + +static void handle_fcp(struct fw_card *card, struct fw_request *request, + int tcode, int destination, int source, int generation, + unsigned long long offset, void *payload, size_t length, + void *callback_data) +{ + struct firedtv *f, *fdtv = NULL; + struct fw_device *device; + unsigned long flags; + int su; + + if (length < 2 || (((u8 *)payload)[0] & 0xf0) != 0) + return; + + su = ((u8 *)payload)[1] & 0x7; + + spin_lock_irqsave(&node_list_lock, flags); + list_for_each_entry(f, &node_list, list) { + device = device_of(f); + if (device->generation != generation) + continue; + + smp_rmb(); /* node_id vs. generation */ + + if (device->card == card && + device->node_id == source && + (f->subunit == su || (f->subunit == 0 && su == 0x7))) { + fdtv = f; + break; + } + } + spin_unlock_irqrestore(&node_list_lock, flags); + + if (fdtv) + avc_recv(fdtv, payload, length); +} + +static struct fw_address_handler fcp_handler = { + .length = CSR_FCP_END - CSR_FCP_RESPONSE, + .address_callback = handle_fcp, +}; + +static const struct fw_address_region fcp_region = { + .start = CSR_REGISTER_BASE + CSR_FCP_RESPONSE, + .end = CSR_REGISTER_BASE + CSR_FCP_END, +}; + +static const char * const model_names[] = { + [FIREDTV_UNKNOWN] = "unknown type", + [FIREDTV_DVB_S] = "FireDTV S/CI", + [FIREDTV_DVB_C] = "FireDTV C/CI", + [FIREDTV_DVB_T] = "FireDTV T/CI", + [FIREDTV_DVB_S2] = "FireDTV S2 ", +}; + +/* Adjust the template string if models with longer names appear. */ +#define MAX_MODEL_NAME_LEN sizeof("FireDTV ????") + +static int node_probe(struct fw_unit *unit, const struct ieee1394_device_id *id) +{ + struct firedtv *fdtv; + char name[MAX_MODEL_NAME_LEN]; + int name_len, i, err; + + fdtv = kzalloc(sizeof(*fdtv), GFP_KERNEL); + if (!fdtv) + return -ENOMEM; + + dev_set_drvdata(&unit->device, fdtv); + fdtv->device = &unit->device; + fdtv->isochannel = -1; + fdtv->voltage = 0xff; + fdtv->tone = 0xff; + + mutex_init(&fdtv->avc_mutex); + init_waitqueue_head(&fdtv->avc_wait); + mutex_init(&fdtv->demux_mutex); + INIT_WORK(&fdtv->remote_ctrl_work, avc_remote_ctrl_work); + + name_len = fw_csr_string(unit->directory, CSR_MODEL, + name, sizeof(name)); + if (name_len < 0) { + err = name_len; + goto fail_free; + } + for (i = ARRAY_SIZE(model_names); --i; ) + if (strlen(model_names[i]) <= name_len && + strncmp(name, model_names[i], name_len) == 0) + break; + fdtv->type = i; + + err = fdtv_register_rc(fdtv, &unit->device); + if (err) + goto fail_free; + + spin_lock_irq(&node_list_lock); + list_add_tail(&fdtv->list, &node_list); + spin_unlock_irq(&node_list_lock); + + err = avc_identify_subunit(fdtv); + if (err) + goto fail; + + err = fdtv_dvb_register(fdtv, model_names[fdtv->type]); + if (err) + goto fail; + + avc_register_remote_control(fdtv); + + return 0; +fail: + spin_lock_irq(&node_list_lock); + list_del(&fdtv->list); + spin_unlock_irq(&node_list_lock); + fdtv_unregister_rc(fdtv); +fail_free: + kfree(fdtv); + + return err; +} + +static void node_remove(struct fw_unit *unit) +{ + struct firedtv *fdtv = dev_get_drvdata(&unit->device); + + fdtv_dvb_unregister(fdtv); + + spin_lock_irq(&node_list_lock); + list_del(&fdtv->list); + spin_unlock_irq(&node_list_lock); + + fdtv_unregister_rc(fdtv); + + kfree(fdtv); +} + +static void node_update(struct fw_unit *unit) +{ + struct firedtv *fdtv = dev_get_drvdata(&unit->device); + + if (fdtv->isochannel >= 0) + cmp_establish_pp_connection(fdtv, fdtv->subunit, + fdtv->isochannel); +} + +#define MATCH_FLAGS (IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID | \ + IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION) + +#define DIGITAL_EVERYWHERE_OUI 0x001287 +#define AVC_UNIT_SPEC_ID_ENTRY 0x00a02d +#define AVC_SW_VERSION_ENTRY 0x010001 + +static const struct ieee1394_device_id fdtv_id_table[] = { + { + /* FloppyDTV S/CI and FloppyDTV S2 */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000024, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FloppyDTV T/CI */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000025, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FloppyDTV C/CI */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000026, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FireDTV S/CI and FloppyDTV S2 */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000034, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FireDTV T/CI */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000035, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, { + /* FireDTV C/CI */ + .match_flags = MATCH_FLAGS, + .vendor_id = DIGITAL_EVERYWHERE_OUI, + .model_id = 0x000036, + .specifier_id = AVC_UNIT_SPEC_ID_ENTRY, + .version = AVC_SW_VERSION_ENTRY, + }, {} +}; +MODULE_DEVICE_TABLE(ieee1394, fdtv_id_table); + +static struct fw_driver fdtv_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "firedtv", + .bus = &fw_bus_type, + }, + .probe = node_probe, + .update = node_update, + .remove = node_remove, + .id_table = fdtv_id_table, +}; + +static int __init fdtv_init(void) +{ + int ret; + + ret = fw_core_add_address_handler(&fcp_handler, &fcp_region); + if (ret < 0) + return ret; + + ret = driver_register(&fdtv_driver.driver); + if (ret < 0) + fw_core_remove_address_handler(&fcp_handler); + + return ret; +} + +static void __exit fdtv_exit(void) +{ + driver_unregister(&fdtv_driver.driver); + fw_core_remove_address_handler(&fcp_handler); +} + +module_init(fdtv_init); +module_exit(fdtv_exit); + +MODULE_AUTHOR("Andreas Monitzer "); +MODULE_AUTHOR("Ben Backx "); +MODULE_DESCRIPTION("FireDTV DVB Driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3