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/acpi/acpica/evhandler.c | 534 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 534 insertions(+) create mode 100644 drivers/acpi/acpica/evhandler.c (limited to 'drivers/acpi/acpica/evhandler.c') diff --git a/drivers/acpi/acpica/evhandler.c b/drivers/acpi/acpica/evhandler.c new file mode 100644 index 000000000..be9a05498 --- /dev/null +++ b/drivers/acpi/acpica/evhandler.c @@ -0,0 +1,534 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/****************************************************************************** + * + * Module Name: evhandler - Support for Address Space handlers + * + * Copyright (C) 2000 - 2022, Intel Corp. + * + *****************************************************************************/ + +#include +#include "accommon.h" +#include "acevents.h" +#include "acnamesp.h" +#include "acinterp.h" + +#define _COMPONENT ACPI_EVENTS +ACPI_MODULE_NAME("evhandler") + +/* Local prototypes */ +static acpi_status +acpi_ev_install_handler(acpi_handle obj_handle, + u32 level, void *context, void **return_value); + +/* These are the address spaces that will get default handlers */ + +u8 acpi_gbl_default_address_spaces[ACPI_NUM_DEFAULT_SPACES] = { + ACPI_ADR_SPACE_SYSTEM_MEMORY, + ACPI_ADR_SPACE_SYSTEM_IO, + ACPI_ADR_SPACE_PCI_CONFIG, + ACPI_ADR_SPACE_DATA_TABLE +}; + +/******************************************************************************* + * + * FUNCTION: acpi_ev_install_region_handlers + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Installs the core subsystem default address space handlers. + * + ******************************************************************************/ + +acpi_status acpi_ev_install_region_handlers(void) +{ + acpi_status status; + u32 i; + + ACPI_FUNCTION_TRACE(ev_install_region_handlers); + + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* + * All address spaces (PCI Config, EC, SMBus) are scope dependent and + * registration must occur for a specific device. + * + * In the case of the system memory and IO address spaces there is + * currently no device associated with the address space. For these we + * use the root. + * + * We install the default PCI config space handler at the root so that + * this space is immediately available even though the we have not + * enumerated all the PCI Root Buses yet. This is to conform to the ACPI + * specification which states that the PCI config space must be always + * available -- even though we are nowhere near ready to find the PCI root + * buses at this point. + * + * NOTE: We ignore AE_ALREADY_EXISTS because this means that a handler + * has already been installed (via acpi_install_address_space_handler). + * Similar for AE_SAME_HANDLER. + */ + for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) { + status = acpi_ev_install_space_handler(acpi_gbl_root_node, + acpi_gbl_default_address_spaces + [i], + ACPI_DEFAULT_HANDLER, + NULL, NULL); + switch (status) { + case AE_OK: + case AE_SAME_HANDLER: + case AE_ALREADY_EXISTS: + + /* These exceptions are all OK */ + + status = AE_OK; + break; + + default: + + goto unlock_and_exit; + } + } + +unlock_and_exit: + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return_ACPI_STATUS(status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ev_has_default_handler + * + * PARAMETERS: node - Namespace node for the device + * space_id - The address space ID + * + * RETURN: TRUE if default handler is installed, FALSE otherwise + * + * DESCRIPTION: Check if the default handler is installed for the requested + * space ID. + * + ******************************************************************************/ + +u8 +acpi_ev_has_default_handler(struct acpi_namespace_node *node, + acpi_adr_space_type space_id) +{ + union acpi_operand_object *obj_desc; + union acpi_operand_object *handler_obj; + + /* Must have an existing internal object */ + + obj_desc = acpi_ns_get_attached_object(node); + if (obj_desc) { + handler_obj = obj_desc->common_notify.handler; + + /* Walk the linked list of handlers for this object */ + + while (handler_obj) { + if (handler_obj->address_space.space_id == space_id) { + if (handler_obj->address_space.handler_flags & + ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) { + return (TRUE); + } + } + + handler_obj = handler_obj->address_space.next; + } + } + + return (FALSE); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ev_install_handler + * + * PARAMETERS: walk_namespace callback + * + * DESCRIPTION: This routine installs an address handler into objects that are + * of type Region or Device. + * + * If the Object is a Device, and the device has a handler of + * the same type then the search is terminated in that branch. + * + * This is because the existing handler is closer in proximity + * to any more regions than the one we are trying to install. + * + ******************************************************************************/ + +static acpi_status +acpi_ev_install_handler(acpi_handle obj_handle, + u32 level, void *context, void **return_value) +{ + union acpi_operand_object *handler_obj; + union acpi_operand_object *next_handler_obj; + union acpi_operand_object *obj_desc; + struct acpi_namespace_node *node; + acpi_status status; + + ACPI_FUNCTION_NAME(ev_install_handler); + + handler_obj = (union acpi_operand_object *)context; + + /* Parameter validation */ + + if (!handler_obj) { + return (AE_OK); + } + + /* Convert and validate the device handle */ + + node = acpi_ns_validate_handle(obj_handle); + if (!node) { + return (AE_BAD_PARAMETER); + } + + /* + * We only care about regions and objects that are allowed to have + * address space handlers + */ + if ((node->type != ACPI_TYPE_DEVICE) && + (node->type != ACPI_TYPE_REGION) && (node != acpi_gbl_root_node)) { + return (AE_OK); + } + + /* Check for an existing internal object */ + + obj_desc = acpi_ns_get_attached_object(node); + if (!obj_desc) { + + /* No object, just exit */ + + return (AE_OK); + } + + /* Devices are handled different than regions */ + + if (obj_desc->common.type == ACPI_TYPE_DEVICE) { + + /* Check if this Device already has a handler for this address space */ + + next_handler_obj = + acpi_ev_find_region_handler(handler_obj->address_space. + space_id, + obj_desc->common_notify. + handler); + if (next_handler_obj) { + + /* Found a handler, is it for the same address space? */ + + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Found handler for region [%s] in device %p(%p) handler %p\n", + acpi_ut_get_region_name(handler_obj-> + address_space. + space_id), + obj_desc, next_handler_obj, + handler_obj)); + + /* + * Since the object we found it on was a device, then it means + * that someone has already installed a handler for the branch + * of the namespace from this device on. Just bail out telling + * the walk routine to not traverse this branch. This preserves + * the scoping rule for handlers. + */ + return (AE_CTRL_DEPTH); + } + + /* + * As long as the device didn't have a handler for this space we + * don't care about it. We just ignore it and proceed. + */ + return (AE_OK); + } + + /* Object is a Region */ + + if (obj_desc->region.space_id != handler_obj->address_space.space_id) { + + /* This region is for a different address space, just ignore it */ + + return (AE_OK); + } + + /* + * Now we have a region and it is for the handler's address space type. + * + * First disconnect region for any previous handler (if any) + */ + acpi_ev_detach_region(obj_desc, FALSE); + + /* Connect the region to the new handler */ + + status = acpi_ev_attach_region(handler_obj, obj_desc, FALSE); + return (status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ev_find_region_handler + * + * PARAMETERS: space_id - The address space ID + * handler_obj - Head of the handler object list + * + * RETURN: Matching handler object. NULL if space ID not matched + * + * DESCRIPTION: Search a handler object list for a match on the address + * space ID. + * + ******************************************************************************/ + +union acpi_operand_object *acpi_ev_find_region_handler(acpi_adr_space_type + space_id, + union acpi_operand_object + *handler_obj) +{ + + /* Walk the handler list for this device */ + + while (handler_obj) { + + /* Same space_id indicates a handler is installed */ + + if (handler_obj->address_space.space_id == space_id) { + return (handler_obj); + } + + /* Next handler object */ + + handler_obj = handler_obj->address_space.next; + } + + return (NULL); +} + +/******************************************************************************* + * + * FUNCTION: acpi_ev_install_space_handler + * + * PARAMETERS: node - Namespace node for the device + * space_id - The address space ID + * handler - Address of the handler + * setup - Address of the setup function + * context - Value passed to the handler on each access + * + * RETURN: Status + * + * DESCRIPTION: Install a handler for all op_regions of a given space_id. + * Assumes namespace is locked + * + ******************************************************************************/ + +acpi_status +acpi_ev_install_space_handler(struct acpi_namespace_node *node, + acpi_adr_space_type space_id, + acpi_adr_space_handler handler, + acpi_adr_space_setup setup, void *context) +{ + union acpi_operand_object *obj_desc; + union acpi_operand_object *handler_obj; + acpi_status status = AE_OK; + acpi_object_type type; + u8 flags = 0; + + ACPI_FUNCTION_TRACE(ev_install_space_handler); + + /* + * This registration is valid for only the types below and the root. + * The root node is where the default handlers get installed. + */ + if ((node->type != ACPI_TYPE_DEVICE) && + (node->type != ACPI_TYPE_PROCESSOR) && + (node->type != ACPI_TYPE_THERMAL) && (node != acpi_gbl_root_node)) { + status = AE_BAD_PARAMETER; + goto unlock_and_exit; + } + + if (handler == ACPI_DEFAULT_HANDLER) { + flags = ACPI_ADDR_HANDLER_DEFAULT_INSTALLED; + + switch (space_id) { + case ACPI_ADR_SPACE_SYSTEM_MEMORY: + + handler = acpi_ex_system_memory_space_handler; + setup = acpi_ev_system_memory_region_setup; + break; + + case ACPI_ADR_SPACE_SYSTEM_IO: + + handler = acpi_ex_system_io_space_handler; + setup = acpi_ev_io_space_region_setup; + break; +#ifdef ACPI_PCI_CONFIGURED + case ACPI_ADR_SPACE_PCI_CONFIG: + + handler = acpi_ex_pci_config_space_handler; + setup = acpi_ev_pci_config_region_setup; + break; +#endif + case ACPI_ADR_SPACE_CMOS: + + handler = acpi_ex_cmos_space_handler; + setup = acpi_ev_cmos_region_setup; + break; +#ifdef ACPI_PCI_CONFIGURED + case ACPI_ADR_SPACE_PCI_BAR_TARGET: + + handler = acpi_ex_pci_bar_space_handler; + setup = acpi_ev_pci_bar_region_setup; + break; +#endif + case ACPI_ADR_SPACE_DATA_TABLE: + + handler = acpi_ex_data_table_space_handler; + setup = acpi_ev_data_table_region_setup; + break; + + default: + + status = AE_BAD_PARAMETER; + goto unlock_and_exit; + } + } + + /* If the caller hasn't specified a setup routine, use the default */ + + if (!setup) { + setup = acpi_ev_default_region_setup; + } + + /* Check for an existing internal object */ + + obj_desc = acpi_ns_get_attached_object(node); + if (obj_desc) { + /* + * The attached device object already exists. Now make sure + * the handler is not already installed. + */ + handler_obj = acpi_ev_find_region_handler(space_id, + obj_desc-> + common_notify. + handler); + + if (handler_obj) { + if (handler_obj->address_space.handler == handler) { + /* + * It is (relatively) OK to attempt to install the SAME + * handler twice. This can easily happen with the + * PCI_Config space. + */ + status = AE_SAME_HANDLER; + goto unlock_and_exit; + } else { + /* A handler is already installed */ + + status = AE_ALREADY_EXISTS; + } + + goto unlock_and_exit; + } + } else { + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Creating object on Device %p while installing handler\n", + node)); + + /* obj_desc does not exist, create one */ + + if (node->type == ACPI_TYPE_ANY) { + type = ACPI_TYPE_DEVICE; + } else { + type = node->type; + } + + obj_desc = acpi_ut_create_internal_object(type); + if (!obj_desc) { + status = AE_NO_MEMORY; + goto unlock_and_exit; + } + + /* Init new descriptor */ + + obj_desc->common.type = (u8)type; + + /* Attach the new object to the Node */ + + status = acpi_ns_attach_object(node, obj_desc, type); + + /* Remove local reference to the object */ + + acpi_ut_remove_reference(obj_desc); + + if (ACPI_FAILURE(status)) { + goto unlock_and_exit; + } + } + + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Installing address handler for region %s(%X) " + "on Device %4.4s %p(%p)\n", + acpi_ut_get_region_name(space_id), space_id, + acpi_ut_get_node_name(node), node, obj_desc)); + + /* + * Install the handler + * + * At this point there is no existing handler. Just allocate the object + * for the handler and link it into the list. + */ + handler_obj = + acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_ADDRESS_HANDLER); + if (!handler_obj) { + status = AE_NO_MEMORY; + goto unlock_and_exit; + } + + /* Init handler obj */ + + status = + acpi_os_create_mutex(&handler_obj->address_space.context_mutex); + if (ACPI_FAILURE(status)) { + acpi_ut_remove_reference(handler_obj); + goto unlock_and_exit; + } + + handler_obj->address_space.space_id = (u8)space_id; + handler_obj->address_space.handler_flags = flags; + handler_obj->address_space.region_list = NULL; + handler_obj->address_space.node = node; + handler_obj->address_space.handler = handler; + handler_obj->address_space.context = context; + handler_obj->address_space.setup = setup; + + /* Install at head of Device.address_space list */ + + handler_obj->address_space.next = obj_desc->common_notify.handler; + + /* + * The Device object is the first reference on the handler_obj. + * Each region that uses the handler adds a reference. + */ + obj_desc->common_notify.handler = handler_obj; + + /* + * Walk the namespace finding all of the regions this handler will + * manage. + * + * Start at the device and search the branch toward the leaf nodes + * until either the leaf is encountered or a device is detected that + * has an address handler of the same type. + * + * In either case, back up and search down the remainder of the branch + */ + status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, + ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, + acpi_ev_install_handler, NULL, + handler_obj, NULL); + +unlock_and_exit: + return_ACPI_STATUS(status); +} -- cgit v1.2.3