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/mfd/arizona-irq.c | 452 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 452 insertions(+) create mode 100644 drivers/mfd/arizona-irq.c (limited to 'drivers/mfd/arizona-irq.c') diff --git a/drivers/mfd/arizona-irq.c b/drivers/mfd/arizona-irq.c new file mode 100644 index 000000000..d919ae969 --- /dev/null +++ b/drivers/mfd/arizona-irq.c @@ -0,0 +1,452 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Arizona interrupt support + * + * Copyright 2012 Wolfson Microelectronics plc + * + * Author: Mark Brown + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "arizona.h" + +#define ARIZONA_AOD_IRQ_INDEX 0 +#define ARIZONA_MAIN_IRQ_INDEX 1 + +static int arizona_map_irq(struct arizona *arizona, int irq) +{ + int ret; + + if (arizona->aod_irq_chip) { + ret = regmap_irq_get_virq(arizona->aod_irq_chip, irq); + if (ret >= 0) + return ret; + } + + return regmap_irq_get_virq(arizona->irq_chip, irq); +} + +int arizona_request_irq(struct arizona *arizona, int irq, char *name, + irq_handler_t handler, void *data) +{ + irq = arizona_map_irq(arizona, irq); + if (irq < 0) + return irq; + + return request_threaded_irq(irq, NULL, handler, IRQF_ONESHOT, + name, data); +} +EXPORT_SYMBOL_GPL(arizona_request_irq); + +void arizona_free_irq(struct arizona *arizona, int irq, void *data) +{ + irq = arizona_map_irq(arizona, irq); + if (irq < 0) + return; + + free_irq(irq, data); +} +EXPORT_SYMBOL_GPL(arizona_free_irq); + +int arizona_set_irq_wake(struct arizona *arizona, int irq, int on) +{ + irq = arizona_map_irq(arizona, irq); + if (irq < 0) + return irq; + + return irq_set_irq_wake(irq, on); +} +EXPORT_SYMBOL_GPL(arizona_set_irq_wake); + +static irqreturn_t arizona_boot_done(int irq, void *data) +{ + struct arizona *arizona = data; + + dev_dbg(arizona->dev, "Boot done\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t arizona_ctrlif_err(int irq, void *data) +{ + struct arizona *arizona = data; + + /* + * For pretty much all potential sources a register cache sync + * won't help, we've just got a software bug somewhere. + */ + dev_err(arizona->dev, "Control interface error\n"); + + return IRQ_HANDLED; +} + +static irqreturn_t arizona_irq_thread(int irq, void *data) +{ + struct arizona *arizona = data; + bool poll; + unsigned int val; + int ret; + + ret = pm_runtime_resume_and_get(arizona->dev); + if (ret < 0) { + dev_err(arizona->dev, "Failed to resume device: %d\n", ret); + return IRQ_NONE; + } + + do { + poll = false; + + if (arizona->aod_irq_chip) { + /* + * Check the AOD status register to determine whether + * the nested IRQ handler should be called. + */ + ret = regmap_read(arizona->regmap, + ARIZONA_AOD_IRQ1, &val); + if (ret) + dev_warn(arizona->dev, + "Failed to read AOD IRQ1 %d\n", ret); + else if (val) + handle_nested_irq( + irq_find_mapping(arizona->virq, 0)); + } + + /* + * Check if one of the main interrupts is asserted and only + * check that domain if it is. + */ + ret = regmap_read(arizona->regmap, ARIZONA_IRQ_PIN_STATUS, + &val); + if (ret == 0 && val & ARIZONA_IRQ1_STS) { + handle_nested_irq(irq_find_mapping(arizona->virq, 1)); + } else if (ret != 0) { + dev_err(arizona->dev, + "Failed to read main IRQ status: %d\n", ret); + } + + /* + * Poll the IRQ pin status to see if we're really done + * if the interrupt controller can't do it for us. + */ + if (!arizona->pdata.irq_gpio) { + break; + } else if (arizona->pdata.irq_flags & IRQF_TRIGGER_RISING && + gpio_get_value_cansleep(arizona->pdata.irq_gpio)) { + poll = true; + } else if (arizona->pdata.irq_flags & IRQF_TRIGGER_FALLING && + !gpio_get_value_cansleep(arizona->pdata.irq_gpio)) { + poll = true; + } + } while (poll); + + pm_runtime_mark_last_busy(arizona->dev); + pm_runtime_put_autosuspend(arizona->dev); + + return IRQ_HANDLED; +} + +static void arizona_irq_enable(struct irq_data *data) +{ +} + +static void arizona_irq_disable(struct irq_data *data) +{ +} + +static int arizona_irq_set_wake(struct irq_data *data, unsigned int on) +{ + struct arizona *arizona = irq_data_get_irq_chip_data(data); + + return irq_set_irq_wake(arizona->irq, on); +} + +static struct irq_chip arizona_irq_chip = { + .name = "arizona", + .irq_disable = arizona_irq_disable, + .irq_enable = arizona_irq_enable, + .irq_set_wake = arizona_irq_set_wake, +}; + +static struct lock_class_key arizona_irq_lock_class; +static struct lock_class_key arizona_irq_request_class; + +static int arizona_irq_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + struct arizona *data = h->host_data; + + irq_set_chip_data(virq, data); + irq_set_lockdep_class(virq, &arizona_irq_lock_class, + &arizona_irq_request_class); + irq_set_chip_and_handler(virq, &arizona_irq_chip, handle_simple_irq); + irq_set_nested_thread(virq, 1); + irq_set_noprobe(virq); + + return 0; +} + +static const struct irq_domain_ops arizona_domain_ops = { + .map = arizona_irq_map, + .xlate = irq_domain_xlate_twocell, +}; + +int arizona_irq_init(struct arizona *arizona) +{ + int flags = IRQF_ONESHOT; + int ret; + const struct regmap_irq_chip *aod, *irq; + struct irq_data *irq_data; + unsigned int virq; + + arizona->ctrlif_error = true; + + switch (arizona->type) { +#ifdef CONFIG_MFD_WM5102 + case WM5102: + aod = &wm5102_aod; + irq = &wm5102_irq; + + arizona->ctrlif_error = false; + break; +#endif +#ifdef CONFIG_MFD_WM5110 + case WM5110: + case WM8280: + aod = &wm5110_aod; + + switch (arizona->rev) { + case 0 ... 2: + irq = &wm5110_irq; + break; + default: + irq = &wm5110_revd_irq; + break; + } + + arizona->ctrlif_error = false; + break; +#endif +#ifdef CONFIG_MFD_CS47L24 + case WM1831: + case CS47L24: + aod = NULL; + irq = &cs47l24_irq; + + arizona->ctrlif_error = false; + break; +#endif +#ifdef CONFIG_MFD_WM8997 + case WM8997: + aod = &wm8997_aod; + irq = &wm8997_irq; + + arizona->ctrlif_error = false; + break; +#endif +#ifdef CONFIG_MFD_WM8998 + case WM8998: + case WM1814: + aod = &wm8998_aod; + irq = &wm8998_irq; + + arizona->ctrlif_error = false; + break; +#endif + default: + BUG_ON("Unknown Arizona class device" == NULL); + return -EINVAL; + } + + /* Disable all wake sources by default */ + regmap_write(arizona->regmap, ARIZONA_WAKE_CONTROL, 0); + + /* Read the flags from the interrupt controller if not specified */ + if (!arizona->pdata.irq_flags) { + irq_data = irq_get_irq_data(arizona->irq); + if (!irq_data) { + dev_err(arizona->dev, "Invalid IRQ: %d\n", + arizona->irq); + return -EINVAL; + } + + arizona->pdata.irq_flags = irqd_get_trigger_type(irq_data); + switch (arizona->pdata.irq_flags) { + case IRQF_TRIGGER_LOW: + case IRQF_TRIGGER_HIGH: + case IRQF_TRIGGER_RISING: + case IRQF_TRIGGER_FALLING: + break; + + case IRQ_TYPE_NONE: + default: + /* Device default */ + arizona->pdata.irq_flags = IRQF_TRIGGER_LOW; + break; + } + } + + if (arizona->pdata.irq_flags & (IRQF_TRIGGER_HIGH | + IRQF_TRIGGER_RISING)) { + ret = regmap_update_bits(arizona->regmap, ARIZONA_IRQ_CTRL_1, + ARIZONA_IRQ_POL, 0); + if (ret != 0) { + dev_err(arizona->dev, "Couldn't set IRQ polarity: %d\n", + ret); + goto err; + } + } + + flags |= arizona->pdata.irq_flags; + + /* Allocate a virtual IRQ domain to distribute to the regmap domains */ + arizona->virq = irq_domain_add_linear(NULL, 2, &arizona_domain_ops, + arizona); + if (!arizona->virq) { + dev_err(arizona->dev, "Failed to add core IRQ domain\n"); + ret = -EINVAL; + goto err; + } + + if (aod) { + virq = irq_create_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX); + if (!virq) { + dev_err(arizona->dev, "Failed to map AOD IRQs\n"); + ret = -EINVAL; + goto err_domain; + } + + ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT, + 0, aod, &arizona->aod_irq_chip); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to add AOD IRQs: %d\n", ret); + goto err_map_aod; + } + } + + virq = irq_create_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX); + if (!virq) { + dev_err(arizona->dev, "Failed to map main IRQs\n"); + ret = -EINVAL; + goto err_aod; + } + + ret = regmap_add_irq_chip(arizona->regmap, virq, IRQF_ONESHOT, + 0, irq, &arizona->irq_chip); + if (ret != 0) { + dev_err(arizona->dev, "Failed to add main IRQs: %d\n", ret); + goto err_map_main_irq; + } + + /* Used to emulate edge trigger and to work around broken pinmux */ + if (arizona->pdata.irq_gpio) { + if (gpio_to_irq(arizona->pdata.irq_gpio) != arizona->irq) { + dev_warn(arizona->dev, "IRQ %d is not GPIO %d (%d)\n", + arizona->irq, arizona->pdata.irq_gpio, + gpio_to_irq(arizona->pdata.irq_gpio)); + arizona->irq = gpio_to_irq(arizona->pdata.irq_gpio); + } + + ret = devm_gpio_request_one(arizona->dev, + arizona->pdata.irq_gpio, + GPIOF_IN, "arizona IRQ"); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to request IRQ GPIO %d:: %d\n", + arizona->pdata.irq_gpio, ret); + arizona->pdata.irq_gpio = 0; + } + } + + ret = request_threaded_irq(arizona->irq, NULL, arizona_irq_thread, + flags, "arizona", arizona); + + if (ret != 0) { + dev_err(arizona->dev, "Failed to request primary IRQ %d: %d\n", + arizona->irq, ret); + goto err_main_irq; + } + + /* Make sure the boot done IRQ is unmasked for resumes */ + ret = arizona_request_irq(arizona, ARIZONA_IRQ_BOOT_DONE, "Boot done", + arizona_boot_done, arizona); + if (ret != 0) { + dev_err(arizona->dev, "Failed to request boot done %d: %d\n", + arizona->irq, ret); + goto err_boot_done; + } + + /* Handle control interface errors in the core */ + if (arizona->ctrlif_error) { + ret = arizona_request_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, + "Control interface error", + arizona_ctrlif_err, arizona); + if (ret != 0) { + dev_err(arizona->dev, + "Failed to request CTRLIF_ERR %d: %d\n", + arizona->irq, ret); + goto err_ctrlif; + } + } + + return 0; + +err_ctrlif: + arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona); +err_boot_done: + free_irq(arizona->irq, arizona); +err_main_irq: + regmap_del_irq_chip(irq_find_mapping(arizona->virq, + ARIZONA_MAIN_IRQ_INDEX), + arizona->irq_chip); +err_map_main_irq: + irq_dispose_mapping(irq_find_mapping(arizona->virq, + ARIZONA_MAIN_IRQ_INDEX)); +err_aod: + regmap_del_irq_chip(irq_find_mapping(arizona->virq, + ARIZONA_AOD_IRQ_INDEX), + arizona->aod_irq_chip); +err_map_aod: + irq_dispose_mapping(irq_find_mapping(arizona->virq, + ARIZONA_AOD_IRQ_INDEX)); +err_domain: + irq_domain_remove(arizona->virq); +err: + return ret; +} + +int arizona_irq_exit(struct arizona *arizona) +{ + unsigned int virq; + + if (arizona->ctrlif_error) + arizona_free_irq(arizona, ARIZONA_IRQ_CTRLIF_ERR, arizona); + arizona_free_irq(arizona, ARIZONA_IRQ_BOOT_DONE, arizona); + + virq = irq_find_mapping(arizona->virq, ARIZONA_MAIN_IRQ_INDEX); + regmap_del_irq_chip(virq, arizona->irq_chip); + irq_dispose_mapping(virq); + + virq = irq_find_mapping(arizona->virq, ARIZONA_AOD_IRQ_INDEX); + regmap_del_irq_chip(virq, arizona->aod_irq_chip); + irq_dispose_mapping(virq); + + irq_domain_remove(arizona->virq); + + free_irq(arizona->irq, arizona); + + return 0; +} -- cgit v1.2.3