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/test-drivers/vivid/vivid-vbi-gen.c | 310 +++++++++++++++++++++++ 1 file changed, 310 insertions(+) create mode 100644 drivers/media/test-drivers/vivid/vivid-vbi-gen.c (limited to 'drivers/media/test-drivers/vivid/vivid-vbi-gen.c') diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-gen.c b/drivers/media/test-drivers/vivid/vivid-vbi-gen.c new file mode 100644 index 000000000..70a4024d4 --- /dev/null +++ b/drivers/media/test-drivers/vivid/vivid-vbi-gen.c @@ -0,0 +1,310 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * vivid-vbi-gen.c - vbi generator support functions. + * + * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved. + */ + +#include +#include +#include +#include +#include + +#include "vivid-vbi-gen.h" + +static void wss_insert(u8 *wss, u32 val, unsigned size) +{ + while (size--) + *wss++ = (val & (1 << size)) ? 0xc0 : 0x10; +} + +static void vivid_vbi_gen_wss_raw(const struct v4l2_sliced_vbi_data *data, + u8 *buf, unsigned sampling_rate) +{ + const unsigned rate = 5000000; /* WSS has a 5 MHz transmission rate */ + u8 wss[29 + 24 + 24 + 24 + 18 + 18] = { 0 }; + const unsigned zero = 0x07; + const unsigned one = 0x38; + unsigned bit = 0; + u16 wss_data; + int i; + + wss_insert(wss + bit, 0x1f1c71c7, 29); bit += 29; + wss_insert(wss + bit, 0x1e3c1f, 24); bit += 24; + + wss_data = (data->data[1] << 8) | data->data[0]; + for (i = 0; i <= 13; i++, bit += 6) + wss_insert(wss + bit, (wss_data & (1 << i)) ? one : zero, 6); + + for (i = 0, bit = 0; bit < sizeof(wss); bit++) { + unsigned n = ((bit + 1) * sampling_rate) / rate; + + while (i < n) + buf[i++] = wss[bit]; + } +} + +static void vivid_vbi_gen_teletext_raw(const struct v4l2_sliced_vbi_data *data, + u8 *buf, unsigned sampling_rate) +{ + const unsigned rate = 6937500 / 10; /* Teletext has a 6.9375 MHz transmission rate */ + u8 teletext[45] = { 0x55, 0x55, 0x27 }; + unsigned bit = 0; + int i; + + memcpy(teletext + 3, data->data, sizeof(teletext) - 3); + /* prevents 32 bit overflow */ + sampling_rate /= 10; + + for (i = 0, bit = 0; bit < sizeof(teletext) * 8; bit++) { + unsigned n = ((bit + 1) * sampling_rate) / rate; + u8 val = (teletext[bit / 8] & (1 << (bit & 7))) ? 0xc0 : 0x10; + + while (i < n) + buf[i++] = val; + } +} + +static void cc_insert(u8 *cc, u8 ch) +{ + unsigned tot = 0; + unsigned i; + + for (i = 0; i < 7; i++) { + cc[2 * i] = cc[2 * i + 1] = (ch & (1 << i)) ? 1 : 0; + tot += cc[2 * i]; + } + cc[14] = cc[15] = !(tot & 1); +} + +#define CC_PREAMBLE_BITS (14 + 4 + 2) + +static void vivid_vbi_gen_cc_raw(const struct v4l2_sliced_vbi_data *data, + u8 *buf, unsigned sampling_rate) +{ + const unsigned rate = 1000000; /* CC has a 1 MHz transmission rate */ + + u8 cc[CC_PREAMBLE_BITS + 2 * 16] = { + /* Clock run-in: 7 cycles */ + 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, + /* 2 cycles of 0 */ + 0, 0, 0, 0, + /* Start bit of 1 (each bit is two cycles) */ + 1, 1 + }; + unsigned bit, i; + + cc_insert(cc + CC_PREAMBLE_BITS, data->data[0]); + cc_insert(cc + CC_PREAMBLE_BITS + 16, data->data[1]); + + for (i = 0, bit = 0; bit < sizeof(cc); bit++) { + unsigned n = ((bit + 1) * sampling_rate) / rate; + + while (i < n) + buf[i++] = cc[bit] ? 0xc0 : 0x10; + } +} + +void vivid_vbi_gen_raw(const struct vivid_vbi_gen_data *vbi, + const struct v4l2_vbi_format *vbi_fmt, u8 *buf) +{ + unsigned idx; + + for (idx = 0; idx < 25; idx++) { + const struct v4l2_sliced_vbi_data *data = vbi->data + idx; + unsigned start_2nd_field; + unsigned line = data->line; + u8 *linebuf = buf; + + start_2nd_field = (data->id & V4L2_SLICED_VBI_525) ? 263 : 313; + if (data->field) + line += start_2nd_field; + line -= vbi_fmt->start[data->field]; + + if (vbi_fmt->flags & V4L2_VBI_INTERLACED) + linebuf += (line * 2 + data->field) * + vbi_fmt->samples_per_line; + else + linebuf += (line + data->field * vbi_fmt->count[0]) * + vbi_fmt->samples_per_line; + if (data->id == V4L2_SLICED_CAPTION_525) + vivid_vbi_gen_cc_raw(data, linebuf, vbi_fmt->sampling_rate); + else if (data->id == V4L2_SLICED_WSS_625) + vivid_vbi_gen_wss_raw(data, linebuf, vbi_fmt->sampling_rate); + else if (data->id == V4L2_SLICED_TELETEXT_B) + vivid_vbi_gen_teletext_raw(data, linebuf, vbi_fmt->sampling_rate); + } +} + +static const u8 vivid_cc_sequence1[30] = { + 0x14, 0x20, /* Resume Caption Loading */ + 'H', 'e', + 'l', 'l', + 'o', ' ', + 'w', 'o', + 'r', 'l', + 'd', '!', + 0x14, 0x2f, /* End of Caption */ +}; + +static const u8 vivid_cc_sequence2[30] = { + 0x14, 0x20, /* Resume Caption Loading */ + 'C', 'l', + 'o', 's', + 'e', 'd', + ' ', 'c', + 'a', 'p', + 't', 'i', + 'o', 'n', + 's', ' ', + 't', 'e', + 's', 't', + 0x14, 0x2f, /* End of Caption */ +}; + +static u8 calc_parity(u8 val) +{ + unsigned i; + unsigned tot = 0; + + for (i = 0; i < 7; i++) + tot += (val & (1 << i)) ? 1 : 0; + return val | ((tot & 1) ? 0 : 0x80); +} + +static void vivid_vbi_gen_set_time_of_day(u8 *packet) +{ + struct tm tm; + u8 checksum, i; + + time64_to_tm(ktime_get_real_seconds(), 0, &tm); + packet[0] = calc_parity(0x07); + packet[1] = calc_parity(0x01); + packet[2] = calc_parity(0x40 | tm.tm_min); + packet[3] = calc_parity(0x40 | tm.tm_hour); + packet[4] = calc_parity(0x40 | tm.tm_mday); + if (tm.tm_mday == 1 && tm.tm_mon == 2 && + sys_tz.tz_minuteswest > tm.tm_min + tm.tm_hour * 60) + packet[4] = calc_parity(0x60 | tm.tm_mday); + packet[5] = calc_parity(0x40 | (1 + tm.tm_mon)); + packet[6] = calc_parity(0x40 | (1 + tm.tm_wday)); + packet[7] = calc_parity(0x40 | ((tm.tm_year - 90) & 0x3f)); + packet[8] = calc_parity(0x0f); + for (checksum = i = 0; i <= 8; i++) + checksum += packet[i] & 0x7f; + packet[9] = calc_parity(0x100 - checksum); + packet[10] = calc_parity(0x07); + packet[11] = calc_parity(0x04); + if (sys_tz.tz_minuteswest >= 0) + packet[12] = calc_parity(0x40 | ((sys_tz.tz_minuteswest / 60) & 0x1f)); + else + packet[12] = calc_parity(0x40 | ((24 + sys_tz.tz_minuteswest / 60) & 0x1f)); + packet[13] = calc_parity(0); + packet[14] = calc_parity(0x0f); + for (checksum = 0, i = 10; i <= 14; i++) + checksum += packet[i] & 0x7f; + packet[15] = calc_parity(0x100 - checksum); +} + +static const u8 hamming[16] = { + 0x15, 0x02, 0x49, 0x5e, 0x64, 0x73, 0x38, 0x2f, + 0xd0, 0xc7, 0x8c, 0x9b, 0xa1, 0xb6, 0xfd, 0xea +}; + +static void vivid_vbi_gen_teletext(u8 *packet, unsigned line, unsigned frame) +{ + unsigned offset = 2; + unsigned i; + + packet[0] = hamming[1 + ((line & 1) << 3)]; + packet[1] = hamming[line >> 1]; + memset(packet + 2, 0x20, 40); + if (line == 0) { + /* subcode */ + packet[2] = hamming[frame % 10]; + packet[3] = hamming[frame / 10]; + packet[4] = hamming[0]; + packet[5] = hamming[0]; + packet[6] = hamming[0]; + packet[7] = hamming[0]; + packet[8] = hamming[0]; + packet[9] = hamming[1]; + offset = 10; + } + packet += offset; + memcpy(packet, "Page: 100 Row: 10", 17); + packet[7] = '0' + frame / 10; + packet[8] = '0' + frame % 10; + packet[15] = '0' + line / 10; + packet[16] = '0' + line % 10; + for (i = 0; i < 42 - offset; i++) + packet[i] = calc_parity(packet[i]); +} + +void vivid_vbi_gen_sliced(struct vivid_vbi_gen_data *vbi, + bool is_60hz, unsigned seqnr) +{ + struct v4l2_sliced_vbi_data *data0 = vbi->data; + struct v4l2_sliced_vbi_data *data1 = vbi->data + 1; + unsigned frame = seqnr % 60; + + memset(vbi->data, 0, sizeof(vbi->data)); + + if (!is_60hz) { + unsigned i; + + for (i = 0; i <= 11; i++) { + data0->id = V4L2_SLICED_TELETEXT_B; + data0->line = 7 + i; + vivid_vbi_gen_teletext(data0->data, i, frame); + data0++; + } + data0->id = V4L2_SLICED_WSS_625; + data0->line = 23; + /* 4x3 video aspect ratio */ + data0->data[0] = 0x08; + data0++; + for (i = 0; i <= 11; i++) { + data0->id = V4L2_SLICED_TELETEXT_B; + data0->field = 1; + data0->line = 7 + i; + vivid_vbi_gen_teletext(data0->data, 12 + i, frame); + data0++; + } + return; + } + + data0->id = V4L2_SLICED_CAPTION_525; + data0->line = 21; + data1->id = V4L2_SLICED_CAPTION_525; + data1->field = 1; + data1->line = 21; + + if (frame < 15) { + data0->data[0] = calc_parity(vivid_cc_sequence1[2 * frame]); + data0->data[1] = calc_parity(vivid_cc_sequence1[2 * frame + 1]); + } else if (frame >= 30 && frame < 45) { + frame -= 30; + data0->data[0] = calc_parity(vivid_cc_sequence2[2 * frame]); + data0->data[1] = calc_parity(vivid_cc_sequence2[2 * frame + 1]); + } else { + data0->data[0] = calc_parity(0); + data0->data[1] = calc_parity(0); + } + + frame = seqnr % (30 * 60); + switch (frame) { + case 0: + vivid_vbi_gen_set_time_of_day(vbi->time_of_day_packet); + fallthrough; + case 1 ... 7: + data1->data[0] = vbi->time_of_day_packet[frame * 2]; + data1->data[1] = vbi->time_of_day_packet[frame * 2 + 1]; + break; + default: + data1->data[0] = calc_parity(0); + data1->data[1] = calc_parity(0); + break; + } +} -- cgit v1.2.3