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/common/siano/smsdvb-debugfs.c | 537 ++++++++++++++++++++++++++++ 1 file changed, 537 insertions(+) create mode 100644 drivers/media/common/siano/smsdvb-debugfs.c (limited to 'drivers/media/common/siano/smsdvb-debugfs.c') diff --git a/drivers/media/common/siano/smsdvb-debugfs.c b/drivers/media/common/siano/smsdvb-debugfs.c new file mode 100644 index 000000000..8916bb644 --- /dev/null +++ b/drivers/media/common/siano/smsdvb-debugfs.c @@ -0,0 +1,537 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Copyright(c) 2013 Mauro Carvalho Chehab + +#include "smscoreapi.h" + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "smsdvb.h" + +static struct dentry *smsdvb_debugfs_usb_root; + +struct smsdvb_debugfs { + struct kref refcount; + spinlock_t lock; + + char stats_data[PAGE_SIZE]; + unsigned stats_count; + bool stats_was_read; + + wait_queue_head_t stats_queue; +}; + +static void smsdvb_print_dvb_stats(struct smsdvb_debugfs *debug_data, + struct sms_stats *p) +{ + int n = 0; + char *buf; + + spin_lock(&debug_data->lock); + if (debug_data->stats_count) { + spin_unlock(&debug_data->lock); + return; + } + + buf = debug_data->stats_data; + + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_rf_locked = %d\n", p->is_rf_locked); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_demod_locked = %d\n", p->is_demod_locked); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_external_lna_on = %d\n", p->is_external_lna_on); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "SNR = %d\n", p->SNR); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "ber = %d\n", p->ber); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "FIB_CRC = %d\n", p->FIB_CRC); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "ts_per = %d\n", p->ts_per); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "MFER = %d\n", p->MFER); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "RSSI = %d\n", p->RSSI); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "in_band_pwr = %d\n", p->in_band_pwr); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "carrier_offset = %d\n", p->carrier_offset); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "modem_state = %d\n", p->modem_state); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "frequency = %d\n", p->frequency); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "bandwidth = %d\n", p->bandwidth); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "transmission_mode = %d\n", p->transmission_mode); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "modem_state = %d\n", p->modem_state); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "guard_interval = %d\n", p->guard_interval); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "code_rate = %d\n", p->code_rate); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "lp_code_rate = %d\n", p->lp_code_rate); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "hierarchy = %d\n", p->hierarchy); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "constellation = %d\n", p->constellation); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "burst_size = %d\n", p->burst_size); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "burst_duration = %d\n", p->burst_duration); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "burst_cycle_time = %d\n", p->burst_cycle_time); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "calc_burst_cycle_time = %d\n", + p->calc_burst_cycle_time); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_of_rows = %d\n", p->num_of_rows); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_of_padd_cols = %d\n", p->num_of_padd_cols); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_of_punct_cols = %d\n", p->num_of_punct_cols); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "error_ts_packets = %d\n", p->error_ts_packets); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "total_ts_packets = %d\n", p->total_ts_packets); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_of_valid_mpe_tlbs = %d\n", p->num_of_valid_mpe_tlbs); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_of_invalid_mpe_tlbs = %d\n", p->num_of_invalid_mpe_tlbs); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_of_corrected_mpe_tlbs = %d\n", p->num_of_corrected_mpe_tlbs); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "ber_error_count = %d\n", p->ber_error_count); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "ber_bit_count = %d\n", p->ber_bit_count); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "sms_to_host_tx_errors = %d\n", p->sms_to_host_tx_errors); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "pre_ber = %d\n", p->pre_ber); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "cell_id = %d\n", p->cell_id); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "dvbh_srv_ind_hp = %d\n", p->dvbh_srv_ind_hp); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "dvbh_srv_ind_lp = %d\n", p->dvbh_srv_ind_lp); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_mpe_received = %d\n", p->num_mpe_received); + + debug_data->stats_count = n; + spin_unlock(&debug_data->lock); + wake_up(&debug_data->stats_queue); +} + +static void smsdvb_print_isdb_stats(struct smsdvb_debugfs *debug_data, + struct sms_isdbt_stats *p) +{ + int i, n = 0; + char *buf; + + spin_lock(&debug_data->lock); + if (debug_data->stats_count) { + spin_unlock(&debug_data->lock); + return; + } + + buf = debug_data->stats_data; + + n += scnprintf(&buf[n], PAGE_SIZE - n, + "statistics_type = %d\t", p->statistics_type); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "full_size = %d\n", p->full_size); + + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_rf_locked = %d\t\t", p->is_rf_locked); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_demod_locked = %d\t", p->is_demod_locked); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_external_lna_on = %d\n", p->is_external_lna_on); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "SNR = %d dB\t\t", p->SNR); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "RSSI = %d dBm\t\t", p->RSSI); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "in_band_pwr = %d dBm\n", p->in_band_pwr); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "carrier_offset = %d\t", p->carrier_offset); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "bandwidth = %d\t\t", p->bandwidth); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "frequency = %d Hz\n", p->frequency); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "transmission_mode = %d\t", p->transmission_mode); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "modem_state = %d\t\t", p->modem_state); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "guard_interval = %d\n", p->guard_interval); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "system_type = %d\t\t", p->system_type); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "partial_reception = %d\t", p->partial_reception); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_of_layers = %d\n", p->num_of_layers); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "sms_to_host_tx_errors = %d\n", p->sms_to_host_tx_errors); + + for (i = 0; i < 3; i++) { + if (p->layer_info[i].number_of_segments < 1 || + p->layer_info[i].number_of_segments > 13) + continue; + + n += scnprintf(&buf[n], PAGE_SIZE - n, "\nLayer %d\n", i); + n += scnprintf(&buf[n], PAGE_SIZE - n, "\tcode_rate = %d\t", + p->layer_info[i].code_rate); + n += scnprintf(&buf[n], PAGE_SIZE - n, "constellation = %d\n", + p->layer_info[i].constellation); + n += scnprintf(&buf[n], PAGE_SIZE - n, "\tber = %-5d\t", + p->layer_info[i].ber); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "\tber_error_count = %-5d\t", + p->layer_info[i].ber_error_count); + n += scnprintf(&buf[n], PAGE_SIZE - n, "ber_bit_count = %-5d\n", + p->layer_info[i].ber_bit_count); + n += scnprintf(&buf[n], PAGE_SIZE - n, "\tpre_ber = %-5d\t", + p->layer_info[i].pre_ber); + n += scnprintf(&buf[n], PAGE_SIZE - n, "\tts_per = %-5d\n", + p->layer_info[i].ts_per); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "\terror_ts_packets = %-5d\t", + p->layer_info[i].error_ts_packets); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "total_ts_packets = %-5d\t", + p->layer_info[i].total_ts_packets); + n += scnprintf(&buf[n], PAGE_SIZE - n, "ti_ldepth_i = %d\n", + p->layer_info[i].ti_ldepth_i); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "\tnumber_of_segments = %d\t", + p->layer_info[i].number_of_segments); + n += scnprintf(&buf[n], PAGE_SIZE - n, "tmcc_errors = %d\n", + p->layer_info[i].tmcc_errors); + } + + debug_data->stats_count = n; + spin_unlock(&debug_data->lock); + wake_up(&debug_data->stats_queue); +} + +static void smsdvb_print_isdb_stats_ex(struct smsdvb_debugfs *debug_data, + struct sms_isdbt_stats_ex *p) +{ + int i, n = 0; + char *buf; + + spin_lock(&debug_data->lock); + if (debug_data->stats_count) { + spin_unlock(&debug_data->lock); + return; + } + + buf = debug_data->stats_data; + + n += scnprintf(&buf[n], PAGE_SIZE - n, + "statistics_type = %d\t", p->statistics_type); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "full_size = %d\n", p->full_size); + + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_rf_locked = %d\t\t", p->is_rf_locked); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_demod_locked = %d\t", p->is_demod_locked); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "is_external_lna_on = %d\n", p->is_external_lna_on); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "SNR = %d dB\t\t", p->SNR); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "RSSI = %d dBm\t\t", p->RSSI); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "in_band_pwr = %d dBm\n", p->in_band_pwr); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "carrier_offset = %d\t", p->carrier_offset); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "bandwidth = %d\t\t", p->bandwidth); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "frequency = %d Hz\n", p->frequency); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "transmission_mode = %d\t", p->transmission_mode); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "modem_state = %d\t\t", p->modem_state); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "guard_interval = %d\n", p->guard_interval); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "system_type = %d\t\t", p->system_type); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "partial_reception = %d\t", p->partial_reception); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "num_of_layers = %d\n", p->num_of_layers); + n += scnprintf(&buf[n], PAGE_SIZE - n, "segment_number = %d\t", + p->segment_number); + n += scnprintf(&buf[n], PAGE_SIZE - n, "tune_bw = %d\n", + p->tune_bw); + + for (i = 0; i < 3; i++) { + if (p->layer_info[i].number_of_segments < 1 || + p->layer_info[i].number_of_segments > 13) + continue; + + n += scnprintf(&buf[n], PAGE_SIZE - n, "\nLayer %d\n", i); + n += scnprintf(&buf[n], PAGE_SIZE - n, "\tcode_rate = %d\t", + p->layer_info[i].code_rate); + n += scnprintf(&buf[n], PAGE_SIZE - n, "constellation = %d\n", + p->layer_info[i].constellation); + n += scnprintf(&buf[n], PAGE_SIZE - n, "\tber = %-5d\t", + p->layer_info[i].ber); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "\tber_error_count = %-5d\t", + p->layer_info[i].ber_error_count); + n += scnprintf(&buf[n], PAGE_SIZE - n, "ber_bit_count = %-5d\n", + p->layer_info[i].ber_bit_count); + n += scnprintf(&buf[n], PAGE_SIZE - n, "\tpre_ber = %-5d\t", + p->layer_info[i].pre_ber); + n += scnprintf(&buf[n], PAGE_SIZE - n, "\tts_per = %-5d\n", + p->layer_info[i].ts_per); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "\terror_ts_packets = %-5d\t", + p->layer_info[i].error_ts_packets); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "total_ts_packets = %-5d\t", + p->layer_info[i].total_ts_packets); + n += scnprintf(&buf[n], PAGE_SIZE - n, "ti_ldepth_i = %d\n", + p->layer_info[i].ti_ldepth_i); + n += scnprintf(&buf[n], PAGE_SIZE - n, + "\tnumber_of_segments = %d\t", + p->layer_info[i].number_of_segments); + n += scnprintf(&buf[n], PAGE_SIZE - n, "tmcc_errors = %d\n", + p->layer_info[i].tmcc_errors); + } + + + debug_data->stats_count = n; + spin_unlock(&debug_data->lock); + + wake_up(&debug_data->stats_queue); +} + +static int smsdvb_stats_open(struct inode *inode, struct file *file) +{ + struct smsdvb_client_t *client = inode->i_private; + struct smsdvb_debugfs *debug_data = client->debug_data; + + kref_get(&debug_data->refcount); + + spin_lock(&debug_data->lock); + debug_data->stats_count = 0; + debug_data->stats_was_read = false; + spin_unlock(&debug_data->lock); + + file->private_data = debug_data; + + return 0; +} + +static void smsdvb_debugfs_data_release(struct kref *ref) +{ + struct smsdvb_debugfs *debug_data; + + debug_data = container_of(ref, struct smsdvb_debugfs, refcount); + kfree(debug_data); +} + +static int smsdvb_stats_wait_read(struct smsdvb_debugfs *debug_data) +{ + int rc = 1; + + spin_lock(&debug_data->lock); + + if (debug_data->stats_was_read) + goto exit; + + rc = debug_data->stats_count; + +exit: + spin_unlock(&debug_data->lock); + return rc; +} + +static __poll_t smsdvb_stats_poll(struct file *file, poll_table *wait) +{ + struct smsdvb_debugfs *debug_data = file->private_data; + int rc; + + kref_get(&debug_data->refcount); + + poll_wait(file, &debug_data->stats_queue, wait); + + rc = smsdvb_stats_wait_read(debug_data); + kref_put(&debug_data->refcount, smsdvb_debugfs_data_release); + + return rc > 0 ? EPOLLIN | EPOLLRDNORM : 0; +} + +static ssize_t smsdvb_stats_read(struct file *file, char __user *user_buf, + size_t nbytes, loff_t *ppos) +{ + int rc = 0, len; + struct smsdvb_debugfs *debug_data = file->private_data; + + kref_get(&debug_data->refcount); + + if (file->f_flags & O_NONBLOCK) { + rc = smsdvb_stats_wait_read(debug_data); + if (!rc) { + rc = -EWOULDBLOCK; + goto ret; + } + } else { + rc = wait_event_interruptible(debug_data->stats_queue, + smsdvb_stats_wait_read(debug_data)); + if (rc < 0) + goto ret; + } + + if (debug_data->stats_was_read) { + rc = 0; /* EOF */ + goto ret; + } + + len = debug_data->stats_count - *ppos; + if (len >= 0) + rc = simple_read_from_buffer(user_buf, nbytes, ppos, + debug_data->stats_data, len); + else + rc = 0; + + if (*ppos >= debug_data->stats_count) { + spin_lock(&debug_data->lock); + debug_data->stats_was_read = true; + spin_unlock(&debug_data->lock); + } +ret: + kref_put(&debug_data->refcount, smsdvb_debugfs_data_release); + return rc; +} + +static int smsdvb_stats_release(struct inode *inode, struct file *file) +{ + struct smsdvb_debugfs *debug_data = file->private_data; + + spin_lock(&debug_data->lock); + debug_data->stats_was_read = true; /* return EOF to read() */ + spin_unlock(&debug_data->lock); + wake_up_interruptible_sync(&debug_data->stats_queue); + + kref_put(&debug_data->refcount, smsdvb_debugfs_data_release); + file->private_data = NULL; + + return 0; +} + +static const struct file_operations debugfs_stats_ops = { + .open = smsdvb_stats_open, + .poll = smsdvb_stats_poll, + .read = smsdvb_stats_read, + .release = smsdvb_stats_release, + .llseek = generic_file_llseek, +}; + +/* + * Functions used by smsdvb, in order to create the interfaces + */ + +int smsdvb_debugfs_create(struct smsdvb_client_t *client) +{ + struct smscore_device_t *coredev = client->coredev; + struct dentry *d; + struct smsdvb_debugfs *debug_data; + + if (!smsdvb_debugfs_usb_root || !coredev->is_usb_device) + return -ENODEV; + + client->debugfs = debugfs_create_dir(coredev->devpath, + smsdvb_debugfs_usb_root); + if (IS_ERR_OR_NULL(client->debugfs)) { + pr_info("Unable to create debugfs %s directory.\n", + coredev->devpath); + return -ENODEV; + } + + d = debugfs_create_file("stats", S_IRUGO | S_IWUSR, client->debugfs, + client, &debugfs_stats_ops); + if (!d) { + debugfs_remove(client->debugfs); + return -ENOMEM; + } + + debug_data = kzalloc(sizeof(*client->debug_data), GFP_KERNEL); + if (!debug_data) + return -ENOMEM; + + client->debug_data = debug_data; + client->prt_dvb_stats = smsdvb_print_dvb_stats; + client->prt_isdb_stats = smsdvb_print_isdb_stats; + client->prt_isdb_stats_ex = smsdvb_print_isdb_stats_ex; + + init_waitqueue_head(&debug_data->stats_queue); + spin_lock_init(&debug_data->lock); + kref_init(&debug_data->refcount); + + return 0; +} + +void smsdvb_debugfs_release(struct smsdvb_client_t *client) +{ + if (!client->debugfs) + return; + + client->prt_dvb_stats = NULL; + client->prt_isdb_stats = NULL; + client->prt_isdb_stats_ex = NULL; + + debugfs_remove_recursive(client->debugfs); + kref_put(&client->debug_data->refcount, smsdvb_debugfs_data_release); + + client->debug_data = NULL; + client->debugfs = NULL; +} + +void smsdvb_debugfs_register(void) +{ + struct dentry *d; + + /* + * FIXME: This was written to debug Siano USB devices. So, it creates + * the debugfs node under /usb. + * A similar logic would be needed for Siano sdio devices, but, in that + * case, usb_debug_root is not a good choice. + * + * Perhaps the right fix here would be to create another sysfs root + * node for sdio-based boards, but this may need some logic at sdio + * subsystem. + */ + d = debugfs_create_dir("smsdvb", usb_debug_root); + if (IS_ERR_OR_NULL(d)) { + pr_err("Couldn't create sysfs node for smsdvb\n"); + return; + } + smsdvb_debugfs_usb_root = d; +} + +void smsdvb_debugfs_unregister(void) +{ + if (!smsdvb_debugfs_usb_root) + return; + debugfs_remove_recursive(smsdvb_debugfs_usb_root); + smsdvb_debugfs_usb_root = NULL; +} -- cgit v1.2.3