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/misc/genwqe/card_sysfs.c | 295 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 295 insertions(+) create mode 100644 drivers/misc/genwqe/card_sysfs.c (limited to 'drivers/misc/genwqe/card_sysfs.c') diff --git a/drivers/misc/genwqe/card_sysfs.c b/drivers/misc/genwqe/card_sysfs.c new file mode 100644 index 000000000..b2f115602 --- /dev/null +++ b/drivers/misc/genwqe/card_sysfs.c @@ -0,0 +1,295 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * IBM Accelerator Family 'GenWQE' + * + * (C) Copyright IBM Corp. 2013 + * + * Author: Frank Haverkamp + * Author: Joerg-Stephan Vogt + * Author: Michael Jung + * Author: Michael Ruettger + */ + +/* + * Sysfs interfaces for the GenWQE card. There are attributes to query + * the version of the bitstream as well as some for the driver. For + * debugging, please also see the debugfs interfaces of this driver. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "card_base.h" +#include "card_ddcb.h" + +static const char * const genwqe_types[] = { + [GENWQE_TYPE_ALTERA_230] = "GenWQE4-230", + [GENWQE_TYPE_ALTERA_530] = "GenWQE4-530", + [GENWQE_TYPE_ALTERA_A4] = "GenWQE5-A4", + [GENWQE_TYPE_ALTERA_A7] = "GenWQE5-A7", +}; + +static ssize_t status_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct genwqe_dev *cd = dev_get_drvdata(dev); + const char *cs[GENWQE_CARD_STATE_MAX] = { "unused", "used", "error" }; + + return sprintf(buf, "%s\n", cs[cd->card_state]); +} +static DEVICE_ATTR_RO(status); + +static ssize_t appid_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + char app_name[5]; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + genwqe_read_app_id(cd, app_name, sizeof(app_name)); + return sprintf(buf, "%s\n", app_name); +} +static DEVICE_ATTR_RO(appid); + +static ssize_t version_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + u64 slu_id, app_id; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + slu_id = __genwqe_readq(cd, IO_SLU_UNITCFG); + app_id = __genwqe_readq(cd, IO_APP_UNITCFG); + + return sprintf(buf, "%016llx.%016llx\n", slu_id, app_id); +} +static DEVICE_ATTR_RO(version); + +static ssize_t type_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + u8 card_type; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + card_type = genwqe_card_type(cd); + return sprintf(buf, "%s\n", (card_type >= ARRAY_SIZE(genwqe_types)) ? + "invalid" : genwqe_types[card_type]); +} +static DEVICE_ATTR_RO(type); + +static ssize_t tempsens_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + u64 tempsens; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + tempsens = __genwqe_readq(cd, IO_SLU_TEMPERATURE_SENSOR); + return sprintf(buf, "%016llx\n", tempsens); +} +static DEVICE_ATTR_RO(tempsens); + +static ssize_t freerunning_timer_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + u64 t; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + t = __genwqe_readq(cd, IO_SLC_FREE_RUNNING_TIMER); + return sprintf(buf, "%016llx\n", t); +} +static DEVICE_ATTR_RO(freerunning_timer); + +static ssize_t queue_working_time_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + u64 t; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + t = __genwqe_readq(cd, IO_SLC_QUEUE_WTIME); + return sprintf(buf, "%016llx\n", t); +} +static DEVICE_ATTR_RO(queue_working_time); + +static ssize_t base_clock_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + u64 base_clock; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + base_clock = genwqe_base_clock_frequency(cd); + return sprintf(buf, "%lld\n", base_clock); +} +static DEVICE_ATTR_RO(base_clock); + +/* + * curr_bitstream_show() - Show the current bitstream id + * + * There is a bug in some old versions of the CPLD which selects the + * bitstream, which causes the IO_SLU_BITSTREAM register to report + * unreliable data in very rare cases. This makes this sysfs + * unreliable up to the point were a new CPLD version is being used. + * + * Unfortunately there is no automatic way yet to query the CPLD + * version, such that you need to manually ensure via programming + * tools that you have a recent version of the CPLD software. + * + * The proposed circumvention is to use a special recovery bitstream + * on the backup partition (0) to identify problems while loading the + * image. + */ +static ssize_t curr_bitstream_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int curr_bitstream; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + curr_bitstream = __genwqe_readq(cd, IO_SLU_BITSTREAM) & 0x1; + return sprintf(buf, "%d\n", curr_bitstream); +} +static DEVICE_ATTR_RO(curr_bitstream); + +/* + * next_bitstream_show() - Show the next activated bitstream + * + * IO_SLC_CFGREG_SOFTRESET: This register can only be accessed by the PF. + */ +static ssize_t next_bitstream_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int next_bitstream; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + switch ((cd->softreset & 0xc) >> 2) { + case 0x2: + next_bitstream = 0; + break; + case 0x3: + next_bitstream = 1; + break; + default: + next_bitstream = -1; + break; /* error */ + } + return sprintf(buf, "%d\n", next_bitstream); +} + +static ssize_t next_bitstream_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int partition; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + if (kstrtoint(buf, 0, &partition) < 0) + return -EINVAL; + + switch (partition) { + case 0x0: + cd->softreset = 0x78; + break; + case 0x1: + cd->softreset = 0x7c; + break; + default: + return -EINVAL; + } + + __genwqe_writeq(cd, IO_SLC_CFGREG_SOFTRESET, cd->softreset); + return count; +} +static DEVICE_ATTR_RW(next_bitstream); + +static ssize_t reload_bitstream_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int reload; + struct genwqe_dev *cd = dev_get_drvdata(dev); + + if (kstrtoint(buf, 0, &reload) < 0) + return -EINVAL; + + if (reload == 0x1) { + if (cd->card_state == GENWQE_CARD_UNUSED || + cd->card_state == GENWQE_CARD_USED) + cd->card_state = GENWQE_CARD_RELOAD_BITSTREAM; + else + return -EIO; + } else { + return -EINVAL; + } + + return count; +} +static DEVICE_ATTR_WO(reload_bitstream); + +/* + * Create device_attribute structures / params: name, mode, show, store + * additional flag if valid in VF + */ +static struct attribute *genwqe_attributes[] = { + &dev_attr_tempsens.attr, + &dev_attr_next_bitstream.attr, + &dev_attr_curr_bitstream.attr, + &dev_attr_base_clock.attr, + &dev_attr_type.attr, + &dev_attr_version.attr, + &dev_attr_appid.attr, + &dev_attr_status.attr, + &dev_attr_freerunning_timer.attr, + &dev_attr_queue_working_time.attr, + &dev_attr_reload_bitstream.attr, + NULL, +}; + +static struct attribute *genwqe_normal_attributes[] = { + &dev_attr_type.attr, + &dev_attr_version.attr, + &dev_attr_appid.attr, + &dev_attr_status.attr, + &dev_attr_freerunning_timer.attr, + &dev_attr_queue_working_time.attr, + NULL, +}; + +/* + * genwqe_is_visible() - Determine if sysfs attribute should be visible or not + * + * VFs have restricted mmio capabilities, so not all sysfs entries + * are allowed in VFs. + */ +static umode_t genwqe_is_visible(struct kobject *kobj, + struct attribute *attr, int n) +{ + unsigned int j; + struct device *dev = kobj_to_dev(kobj); + struct genwqe_dev *cd = dev_get_drvdata(dev); + umode_t mode = attr->mode; + + if (genwqe_is_privileged(cd)) + return mode; + + for (j = 0; genwqe_normal_attributes[j] != NULL; j++) + if (genwqe_normal_attributes[j] == attr) + return mode; + + return 0; +} + +static struct attribute_group genwqe_attribute_group = { + .is_visible = genwqe_is_visible, + .attrs = genwqe_attributes, +}; + +const struct attribute_group *genwqe_attribute_groups[] = { + &genwqe_attribute_group, + NULL, +}; -- cgit v1.2.3