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/dvb-frontends/as102_fe.c | 471 +++++++++++++++++++++++++++++++++ 1 file changed, 471 insertions(+) create mode 100644 drivers/media/dvb-frontends/as102_fe.c (limited to 'drivers/media/dvb-frontends/as102_fe.c') diff --git a/drivers/media/dvb-frontends/as102_fe.c b/drivers/media/dvb-frontends/as102_fe.c new file mode 100644 index 000000000..bc72d954d --- /dev/null +++ b/drivers/media/dvb-frontends/as102_fe.c @@ -0,0 +1,471 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Abilis Systems Single DVB-T Receiver + * Copyright (C) 2008 Pierrick Hascoet + * Copyright (C) 2010 Devin Heitmueller + */ + +#include + +#include "as102_fe.h" + +struct as102_state { + struct dvb_frontend frontend; + struct as10x_demod_stats demod_stats; + + const struct as102_fe_ops *ops; + void *priv; + uint8_t elna_cfg; + + /* signal strength */ + uint16_t signal_strength; + /* bit error rate */ + uint32_t ber; +}; + +static uint8_t as102_fe_get_code_rate(enum fe_code_rate arg) +{ + uint8_t c; + + switch (arg) { + case FEC_1_2: + c = CODE_RATE_1_2; + break; + case FEC_2_3: + c = CODE_RATE_2_3; + break; + case FEC_3_4: + c = CODE_RATE_3_4; + break; + case FEC_5_6: + c = CODE_RATE_5_6; + break; + case FEC_7_8: + c = CODE_RATE_7_8; + break; + default: + c = CODE_RATE_UNKNOWN; + break; + } + + return c; +} + +static int as102_fe_set_frontend(struct dvb_frontend *fe) +{ + struct as102_state *state = fe->demodulator_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + struct as10x_tune_args tune_args = { 0 }; + + /* set frequency */ + tune_args.freq = c->frequency / 1000; + + /* fix interleaving_mode */ + tune_args.interleaving_mode = INTLV_NATIVE; + + switch (c->bandwidth_hz) { + case 8000000: + tune_args.bandwidth = BW_8_MHZ; + break; + case 7000000: + tune_args.bandwidth = BW_7_MHZ; + break; + case 6000000: + tune_args.bandwidth = BW_6_MHZ; + break; + default: + tune_args.bandwidth = BW_8_MHZ; + } + + switch (c->guard_interval) { + case GUARD_INTERVAL_1_32: + tune_args.guard_interval = GUARD_INT_1_32; + break; + case GUARD_INTERVAL_1_16: + tune_args.guard_interval = GUARD_INT_1_16; + break; + case GUARD_INTERVAL_1_8: + tune_args.guard_interval = GUARD_INT_1_8; + break; + case GUARD_INTERVAL_1_4: + tune_args.guard_interval = GUARD_INT_1_4; + break; + case GUARD_INTERVAL_AUTO: + default: + tune_args.guard_interval = GUARD_UNKNOWN; + break; + } + + switch (c->modulation) { + case QPSK: + tune_args.modulation = CONST_QPSK; + break; + case QAM_16: + tune_args.modulation = CONST_QAM16; + break; + case QAM_64: + tune_args.modulation = CONST_QAM64; + break; + default: + tune_args.modulation = CONST_UNKNOWN; + break; + } + + switch (c->transmission_mode) { + case TRANSMISSION_MODE_2K: + tune_args.transmission_mode = TRANS_MODE_2K; + break; + case TRANSMISSION_MODE_8K: + tune_args.transmission_mode = TRANS_MODE_8K; + break; + default: + tune_args.transmission_mode = TRANS_MODE_UNKNOWN; + } + + switch (c->hierarchy) { + case HIERARCHY_NONE: + tune_args.hierarchy = HIER_NONE; + break; + case HIERARCHY_1: + tune_args.hierarchy = HIER_ALPHA_1; + break; + case HIERARCHY_2: + tune_args.hierarchy = HIER_ALPHA_2; + break; + case HIERARCHY_4: + tune_args.hierarchy = HIER_ALPHA_4; + break; + case HIERARCHY_AUTO: + tune_args.hierarchy = HIER_UNKNOWN; + break; + } + + pr_debug("as102: tuner parameters: freq: %d bw: 0x%02x gi: 0x%02x\n", + c->frequency, + tune_args.bandwidth, + tune_args.guard_interval); + + /* + * Detect a hierarchy selection + * if HP/LP are both set to FEC_NONE, HP will be selected. + */ + if ((tune_args.hierarchy != HIER_NONE) && + ((c->code_rate_LP == FEC_NONE) || + (c->code_rate_HP == FEC_NONE))) { + + if (c->code_rate_LP == FEC_NONE) { + tune_args.hier_select = HIER_HIGH_PRIORITY; + tune_args.code_rate = + as102_fe_get_code_rate(c->code_rate_HP); + } + + if (c->code_rate_HP == FEC_NONE) { + tune_args.hier_select = HIER_LOW_PRIORITY; + tune_args.code_rate = + as102_fe_get_code_rate(c->code_rate_LP); + } + + pr_debug("as102: \thierarchy: 0x%02x selected: %s code_rate_%s: 0x%02x\n", + tune_args.hierarchy, + tune_args.hier_select == HIER_HIGH_PRIORITY ? + "HP" : "LP", + tune_args.hier_select == HIER_HIGH_PRIORITY ? + "HP" : "LP", + tune_args.code_rate); + } else { + tune_args.code_rate = + as102_fe_get_code_rate(c->code_rate_HP); + } + + /* Set frontend arguments */ + return state->ops->set_tune(state->priv, &tune_args); +} + +static int as102_fe_get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *c) +{ + struct as102_state *state = fe->demodulator_priv; + int ret = 0; + struct as10x_tps tps = { 0 }; + + /* send abilis command: GET_TPS */ + ret = state->ops->get_tps(state->priv, &tps); + if (ret < 0) + return ret; + + /* extract constellation */ + switch (tps.modulation) { + case CONST_QPSK: + c->modulation = QPSK; + break; + case CONST_QAM16: + c->modulation = QAM_16; + break; + case CONST_QAM64: + c->modulation = QAM_64; + break; + } + + /* extract hierarchy */ + switch (tps.hierarchy) { + case HIER_NONE: + c->hierarchy = HIERARCHY_NONE; + break; + case HIER_ALPHA_1: + c->hierarchy = HIERARCHY_1; + break; + case HIER_ALPHA_2: + c->hierarchy = HIERARCHY_2; + break; + case HIER_ALPHA_4: + c->hierarchy = HIERARCHY_4; + break; + } + + /* extract code rate HP */ + switch (tps.code_rate_HP) { + case CODE_RATE_1_2: + c->code_rate_HP = FEC_1_2; + break; + case CODE_RATE_2_3: + c->code_rate_HP = FEC_2_3; + break; + case CODE_RATE_3_4: + c->code_rate_HP = FEC_3_4; + break; + case CODE_RATE_5_6: + c->code_rate_HP = FEC_5_6; + break; + case CODE_RATE_7_8: + c->code_rate_HP = FEC_7_8; + break; + } + + /* extract code rate LP */ + switch (tps.code_rate_LP) { + case CODE_RATE_1_2: + c->code_rate_LP = FEC_1_2; + break; + case CODE_RATE_2_3: + c->code_rate_LP = FEC_2_3; + break; + case CODE_RATE_3_4: + c->code_rate_LP = FEC_3_4; + break; + case CODE_RATE_5_6: + c->code_rate_LP = FEC_5_6; + break; + case CODE_RATE_7_8: + c->code_rate_LP = FEC_7_8; + break; + } + + /* extract guard interval */ + switch (tps.guard_interval) { + case GUARD_INT_1_32: + c->guard_interval = GUARD_INTERVAL_1_32; + break; + case GUARD_INT_1_16: + c->guard_interval = GUARD_INTERVAL_1_16; + break; + case GUARD_INT_1_8: + c->guard_interval = GUARD_INTERVAL_1_8; + break; + case GUARD_INT_1_4: + c->guard_interval = GUARD_INTERVAL_1_4; + break; + } + + /* extract transmission mode */ + switch (tps.transmission_mode) { + case TRANS_MODE_2K: + c->transmission_mode = TRANSMISSION_MODE_2K; + break; + case TRANS_MODE_8K: + c->transmission_mode = TRANSMISSION_MODE_8K; + break; + } + + return 0; +} + +static int as102_fe_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *settings) +{ + + settings->min_delay_ms = 1000; + + return 0; +} + +static int as102_fe_read_status(struct dvb_frontend *fe, enum fe_status *status) +{ + int ret = 0; + struct as102_state *state = fe->demodulator_priv; + struct as10x_tune_status tstate = { 0 }; + + /* send abilis command: GET_TUNE_STATUS */ + ret = state->ops->get_status(state->priv, &tstate); + if (ret < 0) + return ret; + + state->signal_strength = tstate.signal_strength; + state->ber = tstate.BER; + + switch (tstate.tune_state) { + case TUNE_STATUS_SIGNAL_DVB_OK: + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; + break; + case TUNE_STATUS_STREAM_DETECTED: + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC | + FE_HAS_VITERBI; + break; + case TUNE_STATUS_STREAM_TUNED: + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC | + FE_HAS_LOCK | FE_HAS_VITERBI; + break; + default: + *status = TUNE_STATUS_NOT_TUNED; + } + + pr_debug("as102: tuner status: 0x%02x, strength %d, per: %d, ber: %d\n", + tstate.tune_state, tstate.signal_strength, + tstate.PER, tstate.BER); + + if (!(*status & FE_HAS_LOCK)) { + memset(&state->demod_stats, 0, sizeof(state->demod_stats)); + return 0; + } + + ret = state->ops->get_stats(state->priv, &state->demod_stats); + if (ret < 0) + memset(&state->demod_stats, 0, sizeof(state->demod_stats)); + + return ret; +} + +/* + * Note: + * - in AS102 SNR=MER + * - the SNR will be returned in linear terms, i.e. not in dB + * - the accuracy equals ±2dB for a SNR range from 4dB to 30dB + * - the accuracy is >2dB for SNR values outside this range + */ +static int as102_fe_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + struct as102_state *state = fe->demodulator_priv; + + *snr = state->demod_stats.mer; + + return 0; +} + +static int as102_fe_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + struct as102_state *state = fe->demodulator_priv; + + *ber = state->ber; + + return 0; +} + +static int as102_fe_read_signal_strength(struct dvb_frontend *fe, + u16 *strength) +{ + struct as102_state *state = fe->demodulator_priv; + + *strength = (((0xffff * 400) * state->signal_strength + 41000) * 2); + + return 0; +} + +static int as102_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + struct as102_state *state = fe->demodulator_priv; + + if (state->demod_stats.has_started) + *ucblocks = state->demod_stats.bad_frame_count; + else + *ucblocks = 0; + + return 0; +} + +static int as102_fe_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) +{ + struct as102_state *state = fe->demodulator_priv; + + return state->ops->stream_ctrl(state->priv, acquire, + state->elna_cfg); +} + +static void as102_fe_release(struct dvb_frontend *fe) +{ + struct as102_state *state = fe->demodulator_priv; + + kfree(state); +} + + +static const struct dvb_frontend_ops as102_fe_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "Abilis AS102 DVB-T", + .frequency_min_hz = 174 * MHz, + .frequency_max_hz = 862 * MHz, + .frequency_stepsize_hz = 166667, + .caps = FE_CAN_INVERSION_AUTO + | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 + | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO + | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QPSK + | FE_CAN_QAM_AUTO + | FE_CAN_TRANSMISSION_MODE_AUTO + | FE_CAN_GUARD_INTERVAL_AUTO + | FE_CAN_HIERARCHY_AUTO + | FE_CAN_RECOVER + | FE_CAN_MUTE_TS + }, + + .set_frontend = as102_fe_set_frontend, + .get_frontend = as102_fe_get_frontend, + .get_tune_settings = as102_fe_get_tune_settings, + + .read_status = as102_fe_read_status, + .read_snr = as102_fe_read_snr, + .read_ber = as102_fe_read_ber, + .read_signal_strength = as102_fe_read_signal_strength, + .read_ucblocks = as102_fe_read_ucblocks, + .ts_bus_ctrl = as102_fe_ts_bus_ctrl, + .release = as102_fe_release, +}; + +struct dvb_frontend *as102_attach(const char *name, + const struct as102_fe_ops *ops, + void *priv, + uint8_t elna_cfg) +{ + struct as102_state *state; + struct dvb_frontend *fe; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return NULL; + + fe = &state->frontend; + fe->demodulator_priv = state; + state->ops = ops; + state->priv = priv; + state->elna_cfg = elna_cfg; + + /* init frontend callback ops */ + memcpy(&fe->ops, &as102_fe_ops, sizeof(struct dvb_frontend_ops)); + strscpy(fe->ops.info.name, name, sizeof(fe->ops.info.name)); + + return fe; + +} +EXPORT_SYMBOL_GPL(as102_attach); + +MODULE_DESCRIPTION("as102-fe"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Pierrick Hascoet "); -- cgit v1.2.3