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(). ... --- arch/arm/common/scoop.c | 268 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 268 insertions(+) create mode 100644 arch/arm/common/scoop.c (limited to 'arch/arm/common/scoop.c') diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c new file mode 100644 index 000000000..e74c5bfdc --- /dev/null +++ b/arch/arm/common/scoop.c @@ -0,0 +1,268 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Support code for the SCOOP interface found on various Sharp PDAs + * + * Copyright (c) 2004 Richard Purdie + * + * Based on code written by Sharp/Lineo for 2.4 kernels + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* PCMCIA to Scoop linkage + + There is no easy way to link multiple scoop devices into one + single entity for the pxa2xx_pcmcia device so this structure + is used which is setup by the platform code. + + This file is never modular so this symbol is always + accessile to the board support files. +*/ +struct scoop_pcmcia_config *platform_scoop_config; +EXPORT_SYMBOL(platform_scoop_config); + +struct scoop_dev { + void __iomem *base; + struct gpio_chip gpio; + spinlock_t scoop_lock; + unsigned short suspend_clr; + unsigned short suspend_set; + u32 scoop_gpwr; +}; + +void reset_scoop(struct device *dev) +{ + struct scoop_dev *sdev = dev_get_drvdata(dev); + + iowrite16(0x0100, sdev->base + SCOOP_MCR); /* 00 */ + iowrite16(0x0000, sdev->base + SCOOP_CDR); /* 04 */ + iowrite16(0x0000, sdev->base + SCOOP_CCR); /* 10 */ + iowrite16(0x0000, sdev->base + SCOOP_IMR); /* 18 */ + iowrite16(0x00FF, sdev->base + SCOOP_IRM); /* 14 */ + iowrite16(0x0000, sdev->base + SCOOP_ISR); /* 1C */ + iowrite16(0x0000, sdev->base + SCOOP_IRM); +} + +static void __scoop_gpio_set(struct scoop_dev *sdev, + unsigned offset, int value) +{ + unsigned short gpwr; + + gpwr = ioread16(sdev->base + SCOOP_GPWR); + if (value) + gpwr |= 1 << (offset + 1); + else + gpwr &= ~(1 << (offset + 1)); + iowrite16(gpwr, sdev->base + SCOOP_GPWR); +} + +static void scoop_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + struct scoop_dev *sdev = gpiochip_get_data(chip); + unsigned long flags; + + spin_lock_irqsave(&sdev->scoop_lock, flags); + + __scoop_gpio_set(sdev, offset, value); + + spin_unlock_irqrestore(&sdev->scoop_lock, flags); +} + +static int scoop_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + struct scoop_dev *sdev = gpiochip_get_data(chip); + + /* XXX: I'm unsure, but it seems so */ + return !!(ioread16(sdev->base + SCOOP_GPRR) & (1 << (offset + 1))); +} + +static int scoop_gpio_direction_input(struct gpio_chip *chip, + unsigned offset) +{ + struct scoop_dev *sdev = gpiochip_get_data(chip); + unsigned long flags; + unsigned short gpcr; + + spin_lock_irqsave(&sdev->scoop_lock, flags); + + gpcr = ioread16(sdev->base + SCOOP_GPCR); + gpcr &= ~(1 << (offset + 1)); + iowrite16(gpcr, sdev->base + SCOOP_GPCR); + + spin_unlock_irqrestore(&sdev->scoop_lock, flags); + + return 0; +} + +static int scoop_gpio_direction_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct scoop_dev *sdev = gpiochip_get_data(chip); + unsigned long flags; + unsigned short gpcr; + + spin_lock_irqsave(&sdev->scoop_lock, flags); + + __scoop_gpio_set(sdev, offset, value); + + gpcr = ioread16(sdev->base + SCOOP_GPCR); + gpcr |= 1 << (offset + 1); + iowrite16(gpcr, sdev->base + SCOOP_GPCR); + + spin_unlock_irqrestore(&sdev->scoop_lock, flags); + + return 0; +} + +unsigned short read_scoop_reg(struct device *dev, unsigned short reg) +{ + struct scoop_dev *sdev = dev_get_drvdata(dev); + return ioread16(sdev->base + reg); +} + +void write_scoop_reg(struct device *dev, unsigned short reg, unsigned short data) +{ + struct scoop_dev *sdev = dev_get_drvdata(dev); + iowrite16(data, sdev->base + reg); +} + +EXPORT_SYMBOL(reset_scoop); +EXPORT_SYMBOL(read_scoop_reg); +EXPORT_SYMBOL(write_scoop_reg); + +#ifdef CONFIG_PM +static void check_scoop_reg(struct scoop_dev *sdev) +{ + unsigned short mcr; + + mcr = ioread16(sdev->base + SCOOP_MCR); + if ((mcr & 0x100) == 0) + iowrite16(0x0101, sdev->base + SCOOP_MCR); +} + +static int scoop_suspend(struct platform_device *dev, pm_message_t state) +{ + struct scoop_dev *sdev = platform_get_drvdata(dev); + + check_scoop_reg(sdev); + sdev->scoop_gpwr = ioread16(sdev->base + SCOOP_GPWR); + iowrite16((sdev->scoop_gpwr & ~sdev->suspend_clr) | sdev->suspend_set, sdev->base + SCOOP_GPWR); + + return 0; +} + +static int scoop_resume(struct platform_device *dev) +{ + struct scoop_dev *sdev = platform_get_drvdata(dev); + + check_scoop_reg(sdev); + iowrite16(sdev->scoop_gpwr, sdev->base + SCOOP_GPWR); + + return 0; +} +#else +#define scoop_suspend NULL +#define scoop_resume NULL +#endif + +static int scoop_probe(struct platform_device *pdev) +{ + struct scoop_dev *devptr; + struct scoop_config *inf; + struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + int ret; + + if (!mem) + return -EINVAL; + + devptr = kzalloc(sizeof(struct scoop_dev), GFP_KERNEL); + if (!devptr) + return -ENOMEM; + + spin_lock_init(&devptr->scoop_lock); + + inf = pdev->dev.platform_data; + devptr->base = ioremap(mem->start, resource_size(mem)); + + if (!devptr->base) { + ret = -ENOMEM; + goto err_ioremap; + } + + platform_set_drvdata(pdev, devptr); + + printk("Sharp Scoop Device found at 0x%08x -> 0x%8p\n",(unsigned int)mem->start, devptr->base); + + iowrite16(0x0140, devptr->base + SCOOP_MCR); + reset_scoop(&pdev->dev); + iowrite16(0x0000, devptr->base + SCOOP_CPR); + iowrite16(inf->io_dir & 0xffff, devptr->base + SCOOP_GPCR); + iowrite16(inf->io_out & 0xffff, devptr->base + SCOOP_GPWR); + + devptr->suspend_clr = inf->suspend_clr; + devptr->suspend_set = inf->suspend_set; + + devptr->gpio.base = -1; + + if (inf->gpio_base != 0) { + devptr->gpio.label = dev_name(&pdev->dev); + devptr->gpio.base = inf->gpio_base; + devptr->gpio.ngpio = 12; /* PA11 = 0, PA12 = 1, etc. up to PA22 = 11 */ + devptr->gpio.set = scoop_gpio_set; + devptr->gpio.get = scoop_gpio_get; + devptr->gpio.direction_input = scoop_gpio_direction_input; + devptr->gpio.direction_output = scoop_gpio_direction_output; + + ret = gpiochip_add_data(&devptr->gpio, devptr); + if (ret) + goto err_gpio; + } + + return 0; + +err_gpio: + platform_set_drvdata(pdev, NULL); +err_ioremap: + iounmap(devptr->base); + kfree(devptr); + + return ret; +} + +static int scoop_remove(struct platform_device *pdev) +{ + struct scoop_dev *sdev = platform_get_drvdata(pdev); + + if (sdev->gpio.base != -1) + gpiochip_remove(&sdev->gpio); + + platform_set_drvdata(pdev, NULL); + iounmap(sdev->base); + kfree(sdev); + + return 0; +} + +static struct platform_driver scoop_driver = { + .probe = scoop_probe, + .remove = scoop_remove, + .suspend = scoop_suspend, + .resume = scoop_resume, + .driver = { + .name = "sharp-scoop", + }, +}; + +static int __init scoop_init(void) +{ + return platform_driver_register(&scoop_driver); +} + +subsys_initcall(scoop_init); -- cgit v1.2.3