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/peci/cpu.c | 342 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 342 insertions(+) create mode 100644 drivers/peci/cpu.c (limited to 'drivers/peci/cpu.c') diff --git a/drivers/peci/cpu.c b/drivers/peci/cpu.c new file mode 100644 index 000000000..de4a7b3e5 --- /dev/null +++ b/drivers/peci/cpu.c @@ -0,0 +1,342 @@ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (c) 2021 Intel Corporation + +#include +#include +#include +#include +#include + +#include "internal.h" + +/** + * peci_temp_read() - read the maximum die temperature from PECI target device + * @device: PECI device to which request is going to be sent + * @temp_raw: where to store the read temperature + * + * It uses GetTemp PECI command. + * + * Return: 0 if succeeded, other values in case errors. + */ +int peci_temp_read(struct peci_device *device, s16 *temp_raw) +{ + struct peci_request *req; + + req = peci_xfer_get_temp(device); + if (IS_ERR(req)) + return PTR_ERR(req); + + *temp_raw = peci_request_temp_read(req); + + peci_request_free(req); + + return 0; +} +EXPORT_SYMBOL_NS_GPL(peci_temp_read, PECI_CPU); + +/** + * peci_pcs_read() - read PCS register + * @device: PECI device to which request is going to be sent + * @index: PCS index + * @param: PCS parameter + * @data: where to store the read data + * + * It uses RdPkgConfig PECI command. + * + * Return: 0 if succeeded, other values in case errors. + */ +int peci_pcs_read(struct peci_device *device, u8 index, u16 param, u32 *data) +{ + struct peci_request *req; + int ret; + + req = peci_xfer_pkg_cfg_readl(device, index, param); + if (IS_ERR(req)) + return PTR_ERR(req); + + ret = peci_request_status(req); + if (ret) + goto out_req_free; + + *data = peci_request_data_readl(req); +out_req_free: + peci_request_free(req); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(peci_pcs_read, PECI_CPU); + +/** + * peci_pci_local_read() - read 32-bit memory location using raw address + * @device: PECI device to which request is going to be sent + * @bus: bus + * @dev: device + * @func: function + * @reg: register + * @data: where to store the read data + * + * It uses RdPCIConfigLocal PECI command. + * + * Return: 0 if succeeded, other values in case errors. + */ +int peci_pci_local_read(struct peci_device *device, u8 bus, u8 dev, u8 func, + u16 reg, u32 *data) +{ + struct peci_request *req; + int ret; + + req = peci_xfer_pci_cfg_local_readl(device, bus, dev, func, reg); + if (IS_ERR(req)) + return PTR_ERR(req); + + ret = peci_request_status(req); + if (ret) + goto out_req_free; + + *data = peci_request_data_readl(req); +out_req_free: + peci_request_free(req); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(peci_pci_local_read, PECI_CPU); + +/** + * peci_ep_pci_local_read() - read 32-bit memory location using raw address + * @device: PECI device to which request is going to be sent + * @seg: PCI segment + * @bus: bus + * @dev: device + * @func: function + * @reg: register + * @data: where to store the read data + * + * Like &peci_pci_local_read, but it uses RdEndpointConfig PECI command. + * + * Return: 0 if succeeded, other values in case errors. + */ +int peci_ep_pci_local_read(struct peci_device *device, u8 seg, + u8 bus, u8 dev, u8 func, u16 reg, u32 *data) +{ + struct peci_request *req; + int ret; + + req = peci_xfer_ep_pci_cfg_local_readl(device, seg, bus, dev, func, reg); + if (IS_ERR(req)) + return PTR_ERR(req); + + ret = peci_request_status(req); + if (ret) + goto out_req_free; + + *data = peci_request_data_readl(req); +out_req_free: + peci_request_free(req); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(peci_ep_pci_local_read, PECI_CPU); + +/** + * peci_mmio_read() - read 32-bit memory location using 64-bit bar offset address + * @device: PECI device to which request is going to be sent + * @bar: PCI bar + * @seg: PCI segment + * @bus: bus + * @dev: device + * @func: function + * @address: 64-bit MMIO address + * @data: where to store the read data + * + * It uses RdEndpointConfig PECI command. + * + * Return: 0 if succeeded, other values in case errors. + */ +int peci_mmio_read(struct peci_device *device, u8 bar, u8 seg, + u8 bus, u8 dev, u8 func, u64 address, u32 *data) +{ + struct peci_request *req; + int ret; + + req = peci_xfer_ep_mmio64_readl(device, bar, seg, bus, dev, func, address); + if (IS_ERR(req)) + return PTR_ERR(req); + + ret = peci_request_status(req); + if (ret) + goto out_req_free; + + *data = peci_request_data_readl(req); +out_req_free: + peci_request_free(req); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(peci_mmio_read, PECI_CPU); + +static const char * const peci_adev_types[] = { + "cputemp", + "dimmtemp", +}; + +struct peci_cpu { + struct peci_device *device; + const struct peci_device_id *id; +}; + +static void adev_release(struct device *dev) +{ + struct auxiliary_device *adev = to_auxiliary_dev(dev); + + kfree(adev->name); + kfree(adev); +} + +static struct auxiliary_device *adev_alloc(struct peci_cpu *priv, int idx) +{ + struct peci_controller *controller = to_peci_controller(priv->device->dev.parent); + struct auxiliary_device *adev; + const char *name; + int ret; + + adev = kzalloc(sizeof(*adev), GFP_KERNEL); + if (!adev) + return ERR_PTR(-ENOMEM); + + name = kasprintf(GFP_KERNEL, "%s.%s", peci_adev_types[idx], (const char *)priv->id->data); + if (!name) { + ret = -ENOMEM; + goto free_adev; + } + + adev->name = name; + adev->dev.parent = &priv->device->dev; + adev->dev.release = adev_release; + adev->id = (controller->id << 16) | (priv->device->addr); + + ret = auxiliary_device_init(adev); + if (ret) + goto free_name; + + return adev; + +free_name: + kfree(name); +free_adev: + kfree(adev); + return ERR_PTR(ret); +} + +static void unregister_adev(void *_adev) +{ + struct auxiliary_device *adev = _adev; + + auxiliary_device_delete(adev); + auxiliary_device_uninit(adev); +} + +static int devm_adev_add(struct device *dev, int idx) +{ + struct peci_cpu *priv = dev_get_drvdata(dev); + struct auxiliary_device *adev; + int ret; + + adev = adev_alloc(priv, idx); + if (IS_ERR(adev)) + return PTR_ERR(adev); + + ret = auxiliary_device_add(adev); + if (ret) { + auxiliary_device_uninit(adev); + return ret; + } + + ret = devm_add_action_or_reset(&priv->device->dev, unregister_adev, adev); + if (ret) + return ret; + + return 0; +} + +static void peci_cpu_add_adevices(struct peci_cpu *priv) +{ + struct device *dev = &priv->device->dev; + int ret, i; + + for (i = 0; i < ARRAY_SIZE(peci_adev_types); i++) { + ret = devm_adev_add(dev, i); + if (ret) { + dev_warn(dev, "Failed to register PECI auxiliary: %s, ret = %d\n", + peci_adev_types[i], ret); + continue; + } + } +} + +static int +peci_cpu_probe(struct peci_device *device, const struct peci_device_id *id) +{ + struct device *dev = &device->dev; + struct peci_cpu *priv; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + dev_set_drvdata(dev, priv); + priv->device = device; + priv->id = id; + + peci_cpu_add_adevices(priv); + + return 0; +} + +static const struct peci_device_id peci_cpu_device_ids[] = { + { /* Haswell Xeon */ + .family = 6, + .model = INTEL_FAM6_HASWELL_X, + .data = "hsx", + }, + { /* Broadwell Xeon */ + .family = 6, + .model = INTEL_FAM6_BROADWELL_X, + .data = "bdx", + }, + { /* Broadwell Xeon D */ + .family = 6, + .model = INTEL_FAM6_BROADWELL_D, + .data = "bdxd", + }, + { /* Skylake Xeon */ + .family = 6, + .model = INTEL_FAM6_SKYLAKE_X, + .data = "skx", + }, + { /* Icelake Xeon */ + .family = 6, + .model = INTEL_FAM6_ICELAKE_X, + .data = "icx", + }, + { /* Icelake Xeon D */ + .family = 6, + .model = INTEL_FAM6_ICELAKE_D, + .data = "icxd", + }, + { } +}; +MODULE_DEVICE_TABLE(peci, peci_cpu_device_ids); + +static struct peci_driver peci_cpu_driver = { + .probe = peci_cpu_probe, + .id_table = peci_cpu_device_ids, + .driver = { + .name = "peci-cpu", + }, +}; +module_peci_driver(peci_cpu_driver); + +MODULE_AUTHOR("Iwona Winiarska "); +MODULE_DESCRIPTION("PECI CPU driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(PECI); -- cgit v1.2.3