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/pnp/pnpacpi/core.c | 325 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 325 insertions(+) create mode 100644 drivers/pnp/pnpacpi/core.c (limited to 'drivers/pnp/pnpacpi/core.c') diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c new file mode 100644 index 000000000..38928ff74 --- /dev/null +++ b/drivers/pnp/pnpacpi/core.c @@ -0,0 +1,325 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * pnpacpi -- PnP ACPI driver + * + * Copyright (c) 2004 Matthieu Castet + * Copyright (c) 2004 Li Shaohua + */ + +#include +#include +#include +#include +#include + +#include "../base.h" +#include "pnpacpi.h" + +static int num; + +/* + * Compatible Device IDs + */ +#define TEST_HEX(c) \ + if (!(('0' <= (c) && (c) <= '9') || ('A' <= (c) && (c) <= 'F'))) \ + return 0 +#define TEST_ALPHA(c) \ + if (!('A' <= (c) && (c) <= 'Z')) \ + return 0 +static int __init ispnpidacpi(const char *id) +{ + TEST_ALPHA(id[0]); + TEST_ALPHA(id[1]); + TEST_ALPHA(id[2]); + TEST_HEX(id[3]); + TEST_HEX(id[4]); + TEST_HEX(id[5]); + TEST_HEX(id[6]); + if (id[7] != '\0') + return 0; + return 1; +} + +static int pnpacpi_get_resources(struct pnp_dev *dev) +{ + pnp_dbg(&dev->dev, "get resources\n"); + return pnpacpi_parse_allocated_resource(dev); +} + +static int pnpacpi_set_resources(struct pnp_dev *dev) +{ + struct acpi_device *acpi_dev; + acpi_handle handle; + int ret = 0; + + pnp_dbg(&dev->dev, "set resources\n"); + + acpi_dev = ACPI_COMPANION(&dev->dev); + if (!acpi_dev) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return -ENODEV; + } + + if (WARN_ON_ONCE(acpi_dev != dev->data)) + dev->data = acpi_dev; + + handle = acpi_dev->handle; + if (acpi_has_method(handle, METHOD_NAME__SRS)) { + struct acpi_buffer buffer; + + ret = pnpacpi_build_resource_template(dev, &buffer); + if (ret) + return ret; + + ret = pnpacpi_encode_resources(dev, &buffer); + if (!ret) { + acpi_status status; + + status = acpi_set_current_resources(handle, &buffer); + if (ACPI_FAILURE(status)) + ret = -EIO; + } + kfree(buffer.pointer); + } + if (!ret && acpi_device_power_manageable(acpi_dev)) + ret = acpi_device_set_power(acpi_dev, ACPI_STATE_D0); + + return ret; +} + +static int pnpacpi_disable_resources(struct pnp_dev *dev) +{ + struct acpi_device *acpi_dev; + acpi_status status; + + dev_dbg(&dev->dev, "disable resources\n"); + + acpi_dev = ACPI_COMPANION(&dev->dev); + if (!acpi_dev) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return 0; + } + + /* acpi_unregister_gsi(pnp_irq(dev, 0)); */ + if (acpi_device_power_manageable(acpi_dev)) + acpi_device_set_power(acpi_dev, ACPI_STATE_D3_COLD); + + /* continue even if acpi_device_set_power() fails */ + status = acpi_evaluate_object(acpi_dev->handle, "_DIS", NULL, NULL); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) + return -ENODEV; + + return 0; +} + +#ifdef CONFIG_ACPI_SLEEP +static bool pnpacpi_can_wakeup(struct pnp_dev *dev) +{ + struct acpi_device *acpi_dev = ACPI_COMPANION(&dev->dev); + + if (!acpi_dev) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return false; + } + + return acpi_bus_can_wakeup(acpi_dev->handle); +} + +static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state) +{ + struct acpi_device *acpi_dev = ACPI_COMPANION(&dev->dev); + int error = 0; + + if (!acpi_dev) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return 0; + } + + if (device_can_wakeup(&dev->dev)) { + error = acpi_pm_set_device_wakeup(&dev->dev, + device_may_wakeup(&dev->dev)); + if (error) + return error; + } + + if (acpi_device_power_manageable(acpi_dev)) { + int power_state = acpi_pm_device_sleep_state(&dev->dev, NULL, + ACPI_STATE_D3_COLD); + if (power_state < 0) + power_state = (state.event == PM_EVENT_ON) ? + ACPI_STATE_D0 : ACPI_STATE_D3_COLD; + + /* + * acpi_device_set_power() can fail (keyboard port can't be + * powered-down?), and in any case, our return value is ignored + * by pnp_bus_suspend(). Hence we don't revert the wakeup + * setting if the set_power fails. + */ + error = acpi_device_set_power(acpi_dev, power_state); + } + + return error; +} + +static int pnpacpi_resume(struct pnp_dev *dev) +{ + struct acpi_device *acpi_dev = ACPI_COMPANION(&dev->dev); + int error = 0; + + if (!acpi_dev) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return -ENODEV; + } + + if (device_may_wakeup(&dev->dev)) + acpi_pm_set_device_wakeup(&dev->dev, false); + + if (acpi_device_power_manageable(acpi_dev)) + error = acpi_device_set_power(acpi_dev, ACPI_STATE_D0); + + return error; +} +#endif + +struct pnp_protocol pnpacpi_protocol = { + .name = "Plug and Play ACPI", + .get = pnpacpi_get_resources, + .set = pnpacpi_set_resources, + .disable = pnpacpi_disable_resources, +#ifdef CONFIG_ACPI_SLEEP + .can_wakeup = pnpacpi_can_wakeup, + .suspend = pnpacpi_suspend, + .resume = pnpacpi_resume, +#endif +}; +EXPORT_SYMBOL(pnpacpi_protocol); + +static const char *__init pnpacpi_get_id(struct acpi_device *device) +{ + struct acpi_hardware_id *id; + + list_for_each_entry(id, &device->pnp.ids, list) { + if (ispnpidacpi(id->id)) + return id->id; + } + + return NULL; +} + +static int __init pnpacpi_add_device(struct acpi_device *device) +{ + struct pnp_dev *dev; + const char *pnpid; + struct acpi_hardware_id *id; + int error; + + /* Skip devices that are already bound */ + if (device->physical_node_count) + return 0; + + /* + * If a PnPacpi device is not present , the device + * driver should not be loaded. + */ + if (!acpi_has_method(device->handle, "_CRS")) + return 0; + + pnpid = pnpacpi_get_id(device); + if (!pnpid) + return 0; + + if (!device->status.present) + return 0; + + dev = pnp_alloc_dev(&pnpacpi_protocol, num, pnpid); + if (!dev) + return -ENOMEM; + + ACPI_COMPANION_SET(&dev->dev, device); + dev->data = device; + /* .enabled means the device can decode the resources */ + dev->active = device->status.enabled; + if (acpi_has_method(device->handle, "_SRS")) + dev->capabilities |= PNP_CONFIGURABLE; + dev->capabilities |= PNP_READ; + if (device->flags.dynamic_status && (dev->capabilities & PNP_CONFIGURABLE)) + dev->capabilities |= PNP_WRITE; + if (device->flags.removable) + dev->capabilities |= PNP_REMOVABLE; + if (acpi_has_method(device->handle, "_DIS")) + dev->capabilities |= PNP_DISABLE; + + if (strlen(acpi_device_name(device))) + strncpy(dev->name, acpi_device_name(device), sizeof(dev->name)); + else + strncpy(dev->name, acpi_device_bid(device), sizeof(dev->name)); + + if (dev->active) + pnpacpi_parse_allocated_resource(dev); + + if (dev->capabilities & PNP_CONFIGURABLE) + pnpacpi_parse_resource_option_data(dev); + + list_for_each_entry(id, &device->pnp.ids, list) { + if (!strcmp(id->id, pnpid)) + continue; + if (!ispnpidacpi(id->id)) + continue; + pnp_add_id(dev, id->id); + } + + /* clear out the damaged flags */ + if (!dev->active) + pnp_init_resources(dev); + + error = pnp_add_device(dev); + if (error) { + put_device(&dev->dev); + return error; + } + + num++; + + return 0; +} + +static acpi_status __init pnpacpi_add_device_handler(acpi_handle handle, + u32 lvl, void *context, + void **rv) +{ + struct acpi_device *device = acpi_fetch_acpi_dev(handle); + + if (!device) + return AE_CTRL_DEPTH; + if (acpi_is_pnp_device(device)) + pnpacpi_add_device(device); + return AE_OK; +} + +int pnpacpi_disabled __initdata; +static int __init pnpacpi_init(void) +{ + if (acpi_disabled || pnpacpi_disabled) { + printk(KERN_INFO "pnp: PnP ACPI: disabled\n"); + return 0; + } + printk(KERN_INFO "pnp: PnP ACPI init\n"); + pnp_register_protocol(&pnpacpi_protocol); + acpi_get_devices(NULL, pnpacpi_add_device_handler, NULL, NULL); + printk(KERN_INFO "pnp: PnP ACPI: found %d devices\n", num); + pnp_platform_devices = 1; + return 0; +} + +fs_initcall(pnpacpi_init); + +static int __init pnpacpi_setup(char *str) +{ + if (str == NULL) + return 1; + if (!strncmp(str, "off", 3)) + pnpacpi_disabled = 1; + return 1; +} + +__setup("pnpacpi=", pnpacpi_setup); -- cgit v1.2.3