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/hid/intel-ish-hid/ipc/pci-ish.c | 405 ++++++++++++++++++++++++++++++++ 1 file changed, 405 insertions(+) create mode 100644 drivers/hid/intel-ish-hid/ipc/pci-ish.c (limited to 'drivers/hid/intel-ish-hid/ipc/pci-ish.c') diff --git a/drivers/hid/intel-ish-hid/ipc/pci-ish.c b/drivers/hid/intel-ish-hid/ipc/pci-ish.c new file mode 100644 index 000000000..7120b30ac --- /dev/null +++ b/drivers/hid/intel-ish-hid/ipc/pci-ish.c @@ -0,0 +1,405 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PCI glue for ISHTP provider device (ISH) driver + * + * Copyright (c) 2014-2016, Intel Corporation. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#define CREATE_TRACE_POINTS +#include +#include "ishtp-dev.h" +#include "hw-ish.h" + +static const struct pci_device_id ish_pci_tbl[] = { + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, CHV_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, BXT_Ax_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, BXT_Bx_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, APL_Ax_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, SPT_Ax_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, CNL_Ax_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, GLK_Ax_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, CNL_H_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, ICL_MOBILE_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, SPT_H_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, CML_LP_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, CMP_H_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, EHL_Ax_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, TGL_LP_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, TGL_H_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, ADL_S_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, ADL_P_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, ADL_N_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, RPL_S_DEVICE_ID)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, MTL_P_DEVICE_ID)}, + {0, } +}; +MODULE_DEVICE_TABLE(pci, ish_pci_tbl); + +/** + * ish_event_tracer() - Callback function to dump trace messages + * @dev: ishtp device + * @format: printf style format + * + * Callback to direct log messages to Linux trace buffers + */ +static __printf(2, 3) +void ish_event_tracer(struct ishtp_device *dev, const char *format, ...) +{ + if (trace_ishtp_dump_enabled()) { + va_list args; + char tmp_buf[100]; + + va_start(args, format); + vsnprintf(tmp_buf, sizeof(tmp_buf), format, args); + va_end(args); + + trace_ishtp_dump(tmp_buf); + } +} + +/** + * ish_init() - Init function + * @dev: ishtp device + * + * This function initialize wait queues for suspend/resume and call + * calls hadware initialization function. This will initiate + * startup sequence + * + * Return: 0 for success or error code for failure + */ +static int ish_init(struct ishtp_device *dev) +{ + int ret; + + /* Set the state of ISH HW to start */ + ret = ish_hw_start(dev); + if (ret) { + dev_err(dev->devc, "ISH: hw start failed.\n"); + return ret; + } + + /* Start the inter process communication to ISH processor */ + ret = ishtp_start(dev); + if (ret) { + dev_err(dev->devc, "ISHTP: Protocol init failed.\n"); + return ret; + } + + return 0; +} + +static const struct pci_device_id ish_invalid_pci_ids[] = { + /* Mehlow platform special pci ids */ + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xA309)}, + {PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xA30A)}, + {} +}; + +static inline bool ish_should_enter_d0i3(struct pci_dev *pdev) +{ + return !pm_suspend_via_firmware() || pdev->device == CHV_DEVICE_ID; +} + +static inline bool ish_should_leave_d0i3(struct pci_dev *pdev) +{ + return !pm_resume_via_firmware() || pdev->device == CHV_DEVICE_ID; +} + +static int enable_gpe(struct device *dev) +{ +#ifdef CONFIG_ACPI + acpi_status acpi_sts; + struct acpi_device *adev; + struct acpi_device_wakeup *wakeup; + + adev = ACPI_COMPANION(dev); + if (!adev) { + dev_err(dev, "get acpi handle failed\n"); + return -ENODEV; + } + wakeup = &adev->wakeup; + + acpi_sts = acpi_enable_gpe(wakeup->gpe_device, wakeup->gpe_number); + if (ACPI_FAILURE(acpi_sts)) { + dev_err(dev, "enable ose_gpe failed\n"); + return -EIO; + } + + return 0; +#else + return -ENODEV; +#endif +} + +static void enable_pme_wake(struct pci_dev *pdev) +{ + if ((pci_pme_capable(pdev, PCI_D0) || + pci_pme_capable(pdev, PCI_D3hot) || + pci_pme_capable(pdev, PCI_D3cold)) && !enable_gpe(&pdev->dev)) { + pci_pme_active(pdev, true); + dev_dbg(&pdev->dev, "ish ipc driver pme wake enabled\n"); + } +} + +/** + * ish_probe() - PCI driver probe callback + * @pdev: pci device + * @ent: pci device id + * + * Initialize PCI function, setup interrupt and call for ISH initialization + * + * Return: 0 for success or error code for failure + */ +static int ish_probe(struct pci_dev *pdev, const struct pci_device_id *ent) +{ + int ret; + struct ish_hw *hw; + unsigned long irq_flag = 0; + struct ishtp_device *ishtp; + struct device *dev = &pdev->dev; + + /* Check for invalid platforms for ISH support */ + if (pci_dev_present(ish_invalid_pci_ids)) + return -ENODEV; + + /* enable pci dev */ + ret = pcim_enable_device(pdev); + if (ret) { + dev_err(dev, "ISH: Failed to enable PCI device\n"); + return ret; + } + + /* set PCI host mastering */ + pci_set_master(pdev); + + /* pci request regions for ISH driver */ + ret = pcim_iomap_regions(pdev, 1 << 0, KBUILD_MODNAME); + if (ret) { + dev_err(dev, "ISH: Failed to get PCI regions\n"); + return ret; + } + + /* allocates and initializes the ISH dev structure */ + ishtp = ish_dev_init(pdev); + if (!ishtp) { + ret = -ENOMEM; + return ret; + } + hw = to_ish_hw(ishtp); + ishtp->print_log = ish_event_tracer; + + /* mapping IO device memory */ + hw->mem_addr = pcim_iomap_table(pdev)[0]; + ishtp->pdev = pdev; + + /* request and enable interrupt */ + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES); + if (!pdev->msi_enabled && !pdev->msix_enabled) + irq_flag = IRQF_SHARED; + + ret = devm_request_irq(dev, pdev->irq, ish_irq_handler, + irq_flag, KBUILD_MODNAME, ishtp); + if (ret) { + dev_err(dev, "ISH: request IRQ %d failed\n", pdev->irq); + return ret; + } + + dev_set_drvdata(ishtp->devc, ishtp); + + init_waitqueue_head(&ishtp->suspend_wait); + init_waitqueue_head(&ishtp->resume_wait); + + /* Enable PME for EHL */ + if (pdev->device == EHL_Ax_DEVICE_ID) + enable_pme_wake(pdev); + + ret = ish_init(ishtp); + if (ret) + return ret; + + return 0; +} + +/** + * ish_remove() - PCI driver remove callback + * @pdev: pci device + * + * This function does cleanup of ISH on pci remove callback + */ +static void ish_remove(struct pci_dev *pdev) +{ + struct ishtp_device *ishtp_dev = pci_get_drvdata(pdev); + + ishtp_bus_remove_all_clients(ishtp_dev, false); + ish_device_disable(ishtp_dev); +} + +static struct device __maybe_unused *ish_resume_device; + +/* 50ms to get resume response */ +#define WAIT_FOR_RESUME_ACK_MS 50 + +/** + * ish_resume_handler() - Work function to complete resume + * @work: work struct + * + * The resume work function to complete resume function asynchronously. + * There are two resume paths, one where ISH is not powered off, + * in that case a simple resume message is enough, others we need + * a reset sequence. + */ +static void __maybe_unused ish_resume_handler(struct work_struct *work) +{ + struct pci_dev *pdev = to_pci_dev(ish_resume_device); + struct ishtp_device *dev = pci_get_drvdata(pdev); + uint32_t fwsts = dev->ops->get_fw_status(dev); + + if (ish_should_leave_d0i3(pdev) && !dev->suspend_flag + && IPC_IS_ISH_ILUP(fwsts)) { + if (device_may_wakeup(&pdev->dev)) + disable_irq_wake(pdev->irq); + + ish_set_host_ready(dev); + + ishtp_send_resume(dev); + + /* Waiting to get resume response */ + if (dev->resume_flag) + wait_event_interruptible_timeout(dev->resume_wait, + !dev->resume_flag, + msecs_to_jiffies(WAIT_FOR_RESUME_ACK_MS)); + + /* + * If the flag is not cleared, something is wrong with ISH FW. + * So on resume, need to go through init sequence again. + */ + if (dev->resume_flag) + ish_init(dev); + } else { + /* + * Resume from the D3, full reboot of ISH processor will happen, + * so need to go through init sequence again. + */ + ish_init(dev); + } +} + +/** + * ish_suspend() - ISH suspend callback + * @device: device pointer + * + * ISH suspend callback + * + * Return: 0 to the pm core + */ +static int __maybe_unused ish_suspend(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct ishtp_device *dev = pci_get_drvdata(pdev); + + if (ish_should_enter_d0i3(pdev)) { + /* + * If previous suspend hasn't been asnwered then ISH is likely + * dead, don't attempt nested notification + */ + if (dev->suspend_flag) + return 0; + + dev->resume_flag = 0; + dev->suspend_flag = 1; + ishtp_send_suspend(dev); + + /* 25 ms should be enough for live ISH to flush all IPC buf */ + if (dev->suspend_flag) + wait_event_interruptible_timeout(dev->suspend_wait, + !dev->suspend_flag, + msecs_to_jiffies(25)); + + if (dev->suspend_flag) { + /* + * It looks like FW halt, clear the DMA bit, and put + * ISH into D3, and FW would reset on resume. + */ + ish_disable_dma(dev); + } else { + /* + * Save state so PCI core will keep the device at D0, + * the ISH would enter D0i3 + */ + pci_save_state(pdev); + + if (device_may_wakeup(&pdev->dev)) + enable_irq_wake(pdev->irq); + } + } else { + /* + * Clear the DMA bit before putting ISH into D3, + * or ISH FW would reset automatically. + */ + ish_disable_dma(dev); + } + + return 0; +} + +static __maybe_unused DECLARE_WORK(resume_work, ish_resume_handler); +/** + * ish_resume() - ISH resume callback + * @device: device pointer + * + * ISH resume callback + * + * Return: 0 to the pm core + */ +static int __maybe_unused ish_resume(struct device *device) +{ + struct pci_dev *pdev = to_pci_dev(device); + struct ishtp_device *dev = pci_get_drvdata(pdev); + + /* add this to finish power flow for EHL */ + if (dev->pdev->device == EHL_Ax_DEVICE_ID) { + pci_set_power_state(pdev, PCI_D0); + enable_pme_wake(pdev); + dev_dbg(dev->devc, "set power state to D0 for ehl\n"); + } + + ish_resume_device = device; + dev->resume_flag = 1; + + schedule_work(&resume_work); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(ish_pm_ops, ish_suspend, ish_resume); + +static struct pci_driver ish_driver = { + .name = KBUILD_MODNAME, + .id_table = ish_pci_tbl, + .probe = ish_probe, + .remove = ish_remove, + .driver.pm = &ish_pm_ops, +}; + +module_pci_driver(ish_driver); + +/* Original author */ +MODULE_AUTHOR("Daniel Drubin "); +/* Adoption to upstream Linux kernel */ +MODULE_AUTHOR("Srinivas Pandruvada "); + +MODULE_DESCRIPTION("Intel(R) Integrated Sensor Hub PCI Device Driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3