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/platform/x86/intel/int1092/intel_sar.c | 322 +++++++++++++++++++++++++ 1 file changed, 322 insertions(+) create mode 100644 drivers/platform/x86/intel/int1092/intel_sar.c (limited to 'drivers/platform/x86/intel/int1092/intel_sar.c') diff --git a/drivers/platform/x86/intel/int1092/intel_sar.c b/drivers/platform/x86/intel/int1092/intel_sar.c new file mode 100644 index 000000000..352fc4596 --- /dev/null +++ b/drivers/platform/x86/intel/int1092/intel_sar.c @@ -0,0 +1,322 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2021, Intel Corporation. + */ + +#include +#include +#include +#include +#include "intel_sar.h" + +/** + * get_int_value: Retrieve integer values from ACPI Object + * @obj: acpi_object pointer which has the integer value + * @out: output pointer will get integer value + * + * Function is used to retrieve integer value from acpi object. + * + * Return: + * * 0 on success + * * -EIO if there is an issue in acpi_object passed. + */ +static int get_int_value(union acpi_object *obj, int *out) +{ + if (!obj || obj->type != ACPI_TYPE_INTEGER) + return -EIO; + *out = (int)obj->integer.value; + return 0; +} + +/** + * update_sar_data: sar data is updated based on regulatory mode + * @context: pointer to driver context structure + * + * sar_data is updated based on regulatory value + * context->reg_value will never exceed MAX_REGULATORY + */ +static void update_sar_data(struct wwan_sar_context *context) +{ + struct wwan_device_mode_configuration *config = + &context->config_data[context->reg_value]; + + if (config->device_mode_info && + context->sar_data.device_mode < config->total_dev_mode) { + int itr = 0; + + for (itr = 0; itr < config->total_dev_mode; itr++) { + if (context->sar_data.device_mode == + config->device_mode_info[itr].device_mode) { + struct wwan_device_mode_info *dev_mode = + &config->device_mode_info[itr]; + + context->sar_data.antennatable_index = dev_mode->antennatable_index; + context->sar_data.bandtable_index = dev_mode->bandtable_index; + context->sar_data.sartable_index = dev_mode->sartable_index; + break; + } + } + } +} + +/** + * parse_package: parse acpi package for retrieving SAR information + * @context: pointer to driver context structure + * @item : acpi_object pointer + * + * Given acpi_object is iterated to retrieve information for each device mode. + * If a given package corresponding to a specific device mode is faulty, it is + * skipped and the specific entry in context structure will have the default value + * of zero. Decoding of subsequent device modes is realized by having "continue" + * statements in the for loop on encountering error in parsing given device mode. + * + * Return: + * AE_OK if success + * AE_ERROR on error + */ +static acpi_status parse_package(struct wwan_sar_context *context, union acpi_object *item) +{ + struct wwan_device_mode_configuration *data; + int value, itr, reg; + union acpi_object *num; + + num = &item->package.elements[0]; + if (get_int_value(num, &value) || value < 0 || value >= MAX_REGULATORY) + return AE_ERROR; + + reg = value; + + data = &context->config_data[reg]; + if (data->total_dev_mode > MAX_DEV_MODES || data->total_dev_mode == 0 || + item->package.count <= data->total_dev_mode) + return AE_ERROR; + + data->device_mode_info = kmalloc_array(data->total_dev_mode, + sizeof(struct wwan_device_mode_info), GFP_KERNEL); + if (!data->device_mode_info) + return AE_ERROR; + + for (itr = 0; itr < data->total_dev_mode; itr++) { + struct wwan_device_mode_info temp = { 0 }; + + num = &item->package.elements[itr + 1]; + if (num->type != ACPI_TYPE_PACKAGE || num->package.count < TOTAL_DATA) + continue; + if (get_int_value(&num->package.elements[0], &temp.device_mode)) + continue; + if (get_int_value(&num->package.elements[1], &temp.bandtable_index)) + continue; + if (get_int_value(&num->package.elements[2], &temp.antennatable_index)) + continue; + if (get_int_value(&num->package.elements[3], &temp.sartable_index)) + continue; + data->device_mode_info[itr] = temp; + } + return AE_OK; +} + +/** + * sar_get_device_mode: Extraction of information from BIOS via DSM calls + * @device: ACPI device for which to retrieve the data + * + * Retrieve the current device mode information from the BIOS. + * + * Return: + * AE_OK on success + * AE_ERROR on error + */ +static acpi_status sar_get_device_mode(struct platform_device *device) +{ + struct wwan_sar_context *context = dev_get_drvdata(&device->dev); + acpi_status status = AE_OK; + union acpi_object *out; + u32 rev = 0; + + out = acpi_evaluate_dsm_typed(context->handle, &context->guid, rev, + COMMAND_ID_DEV_MODE, NULL, ACPI_TYPE_INTEGER); + if (!out) { + dev_err(&device->dev, "DSM cmd:%d Failed to retrieve value\n", COMMAND_ID_DEV_MODE); + status = AE_ERROR; + goto dev_mode_error; + } + context->sar_data.device_mode = out->integer.value; + update_sar_data(context); + sysfs_notify(&device->dev.kobj, NULL, SYSFS_DATANAME); + +dev_mode_error: + ACPI_FREE(out); + return status; +} + +static const struct acpi_device_id sar_device_ids[] = { + { "INTC1092", 0}, + {} +}; +MODULE_DEVICE_TABLE(acpi, sar_device_ids); + +static ssize_t intc_data_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct wwan_sar_context *context = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d %d %d %d\n", context->sar_data.device_mode, + context->sar_data.bandtable_index, + context->sar_data.antennatable_index, + context->sar_data.sartable_index); +} +static DEVICE_ATTR_RO(intc_data); + +static ssize_t intc_reg_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct wwan_sar_context *context = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d\n", context->reg_value); +} + +static ssize_t intc_reg_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct wwan_sar_context *context = dev_get_drvdata(dev); + unsigned int value; + int read; + + if (!count) + return -EINVAL; + read = kstrtouint(buf, 10, &value); + if (read < 0) + return read; + if (value >= MAX_REGULATORY) + return -EOVERFLOW; + context->reg_value = value; + update_sar_data(context); + sysfs_notify(&dev->kobj, NULL, SYSFS_DATANAME); + return count; +} +static DEVICE_ATTR_RW(intc_reg); + +static struct attribute *intcsar_attrs[] = { + &dev_attr_intc_data.attr, + &dev_attr_intc_reg.attr, + NULL +}; + +static struct attribute_group intcsar_group = { + .attrs = intcsar_attrs, +}; + +static void sar_notify(acpi_handle handle, u32 event, void *data) +{ + struct platform_device *device = data; + + if (event == SAR_EVENT) { + if (sar_get_device_mode(device) != AE_OK) + dev_err(&device->dev, "sar_get_device_mode error"); + } +} + +static void sar_get_data(int reg, struct wwan_sar_context *context) +{ + union acpi_object *out, req; + u32 rev = 0; + + req.type = ACPI_TYPE_INTEGER; + req.integer.value = reg; + out = acpi_evaluate_dsm_typed(context->handle, &context->guid, rev, + COMMAND_ID_CONFIG_TABLE, &req, ACPI_TYPE_PACKAGE); + if (!out) + return; + if (out->package.count >= 3 && + out->package.elements[0].type == ACPI_TYPE_INTEGER && + out->package.elements[1].type == ACPI_TYPE_INTEGER && + out->package.elements[2].type == ACPI_TYPE_PACKAGE && + out->package.elements[2].package.count > 0) { + context->config_data[reg].version = out->package.elements[0].integer.value; + context->config_data[reg].total_dev_mode = + out->package.elements[1].integer.value; + if (context->config_data[reg].total_dev_mode <= 0 || + context->config_data[reg].total_dev_mode > MAX_DEV_MODES) { + ACPI_FREE(out); + return; + } + parse_package(context, &out->package.elements[2]); + } + ACPI_FREE(out); +} + +static int sar_probe(struct platform_device *device) +{ + struct wwan_sar_context *context; + int reg; + int result; + + context = kzalloc(sizeof(*context), GFP_KERNEL); + if (!context) + return -ENOMEM; + + context->sar_device = device; + context->handle = ACPI_HANDLE(&device->dev); + dev_set_drvdata(&device->dev, context); + + result = guid_parse(SAR_DSM_UUID, &context->guid); + if (result) { + dev_err(&device->dev, "SAR UUID parse error: %d\n", result); + goto r_free; + } + + for (reg = 0; reg < MAX_REGULATORY; reg++) + sar_get_data(reg, context); + + if (sar_get_device_mode(device) != AE_OK) { + dev_err(&device->dev, "Failed to get device mode\n"); + result = -EIO; + goto r_free; + } + + result = sysfs_create_group(&device->dev.kobj, &intcsar_group); + if (result) { + dev_err(&device->dev, "sysfs creation failed\n"); + goto r_free; + } + + if (acpi_install_notify_handler(ACPI_HANDLE(&device->dev), ACPI_DEVICE_NOTIFY, + sar_notify, (void *)device) != AE_OK) { + dev_err(&device->dev, "Failed acpi_install_notify_handler\n"); + result = -EIO; + goto r_sys; + } + return 0; + +r_sys: + sysfs_remove_group(&device->dev.kobj, &intcsar_group); +r_free: + kfree(context); + return result; +} + +static int sar_remove(struct platform_device *device) +{ + struct wwan_sar_context *context = dev_get_drvdata(&device->dev); + int reg; + + acpi_remove_notify_handler(ACPI_HANDLE(&device->dev), + ACPI_DEVICE_NOTIFY, sar_notify); + sysfs_remove_group(&device->dev.kobj, &intcsar_group); + for (reg = 0; reg < MAX_REGULATORY; reg++) + kfree(context->config_data[reg].device_mode_info); + + kfree(context); + return 0; +} + +static struct platform_driver sar_driver = { + .probe = sar_probe, + .remove = sar_remove, + .driver = { + .name = DRVNAME, + .acpi_match_table = ACPI_PTR(sar_device_ids) + } +}; +module_platform_driver(sar_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Platform device driver for INTEL MODEM BIOS SAR"); +MODULE_AUTHOR("Shravan Sudhakar "); -- cgit v1.2.3