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/mips/ar7/gpio.c | 332 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 332 insertions(+) create mode 100644 arch/mips/ar7/gpio.c (limited to 'arch/mips/ar7/gpio.c') diff --git a/arch/mips/ar7/gpio.c b/arch/mips/ar7/gpio.c new file mode 100644 index 000000000..ae0e01b94 --- /dev/null +++ b/arch/mips/ar7/gpio.c @@ -0,0 +1,332 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2007 Felix Fietkau + * Copyright (C) 2007 Eugene Konev + * Copyright (C) 2009-2010 Florian Fainelli + */ + +#include +#include +#include + +#include + +#define AR7_GPIO_MAX 32 +#define TITAN_GPIO_MAX 51 + +struct ar7_gpio_chip { + void __iomem *regs; + struct gpio_chip chip; +}; + +static int ar7_gpio_get_value(struct gpio_chip *chip, unsigned gpio) +{ + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); + void __iomem *gpio_in = gpch->regs + AR7_GPIO_INPUT; + + return !!(readl(gpio_in) & (1 << gpio)); +} + +static int titan_gpio_get_value(struct gpio_chip *chip, unsigned gpio) +{ + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); + void __iomem *gpio_in0 = gpch->regs + TITAN_GPIO_INPUT_0; + void __iomem *gpio_in1 = gpch->regs + TITAN_GPIO_INPUT_1; + + return readl(gpio >> 5 ? gpio_in1 : gpio_in0) & (1 << (gpio & 0x1f)); +} + +static void ar7_gpio_set_value(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); + void __iomem *gpio_out = gpch->regs + AR7_GPIO_OUTPUT; + unsigned tmp; + + tmp = readl(gpio_out) & ~(1 << gpio); + if (value) + tmp |= 1 << gpio; + writel(tmp, gpio_out); +} + +static void titan_gpio_set_value(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); + void __iomem *gpio_out0 = gpch->regs + TITAN_GPIO_OUTPUT_0; + void __iomem *gpio_out1 = gpch->regs + TITAN_GPIO_OUTPUT_1; + unsigned tmp; + + tmp = readl(gpio >> 5 ? gpio_out1 : gpio_out0) & ~(1 << (gpio & 0x1f)); + if (value) + tmp |= 1 << (gpio & 0x1f); + writel(tmp, gpio >> 5 ? gpio_out1 : gpio_out0); +} + +static int ar7_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); + void __iomem *gpio_dir = gpch->regs + AR7_GPIO_DIR; + + writel(readl(gpio_dir) | (1 << gpio), gpio_dir); + + return 0; +} + +static int titan_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); + void __iomem *gpio_dir0 = gpch->regs + TITAN_GPIO_DIR_0; + void __iomem *gpio_dir1 = gpch->regs + TITAN_GPIO_DIR_1; + + if (gpio >= TITAN_GPIO_MAX) + return -EINVAL; + + writel(readl(gpio >> 5 ? gpio_dir1 : gpio_dir0) | (1 << (gpio & 0x1f)), + gpio >> 5 ? gpio_dir1 : gpio_dir0); + return 0; +} + +static int ar7_gpio_direction_output(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); + void __iomem *gpio_dir = gpch->regs + AR7_GPIO_DIR; + + ar7_gpio_set_value(chip, gpio, value); + writel(readl(gpio_dir) & ~(1 << gpio), gpio_dir); + + return 0; +} + +static int titan_gpio_direction_output(struct gpio_chip *chip, + unsigned gpio, int value) +{ + struct ar7_gpio_chip *gpch = gpiochip_get_data(chip); + void __iomem *gpio_dir0 = gpch->regs + TITAN_GPIO_DIR_0; + void __iomem *gpio_dir1 = gpch->regs + TITAN_GPIO_DIR_1; + + if (gpio >= TITAN_GPIO_MAX) + return -EINVAL; + + titan_gpio_set_value(chip, gpio, value); + writel(readl(gpio >> 5 ? gpio_dir1 : gpio_dir0) & ~(1 << + (gpio & 0x1f)), gpio >> 5 ? gpio_dir1 : gpio_dir0); + + return 0; +} + +static struct ar7_gpio_chip ar7_gpio_chip = { + .chip = { + .label = "ar7-gpio", + .direction_input = ar7_gpio_direction_input, + .direction_output = ar7_gpio_direction_output, + .set = ar7_gpio_set_value, + .get = ar7_gpio_get_value, + .base = 0, + .ngpio = AR7_GPIO_MAX, + } +}; + +static struct ar7_gpio_chip titan_gpio_chip = { + .chip = { + .label = "titan-gpio", + .direction_input = titan_gpio_direction_input, + .direction_output = titan_gpio_direction_output, + .set = titan_gpio_set_value, + .get = titan_gpio_get_value, + .base = 0, + .ngpio = TITAN_GPIO_MAX, + } +}; + +static inline int ar7_gpio_enable_ar7(unsigned gpio) +{ + void __iomem *gpio_en = ar7_gpio_chip.regs + AR7_GPIO_ENABLE; + + writel(readl(gpio_en) | (1 << gpio), gpio_en); + + return 0; +} + +static inline int ar7_gpio_enable_titan(unsigned gpio) +{ + void __iomem *gpio_en0 = titan_gpio_chip.regs + TITAN_GPIO_ENBL_0; + void __iomem *gpio_en1 = titan_gpio_chip.regs + TITAN_GPIO_ENBL_1; + + writel(readl(gpio >> 5 ? gpio_en1 : gpio_en0) | (1 << (gpio & 0x1f)), + gpio >> 5 ? gpio_en1 : gpio_en0); + + return 0; +} + +int ar7_gpio_enable(unsigned gpio) +{ + return ar7_is_titan() ? ar7_gpio_enable_titan(gpio) : + ar7_gpio_enable_ar7(gpio); +} +EXPORT_SYMBOL(ar7_gpio_enable); + +static inline int ar7_gpio_disable_ar7(unsigned gpio) +{ + void __iomem *gpio_en = ar7_gpio_chip.regs + AR7_GPIO_ENABLE; + + writel(readl(gpio_en) & ~(1 << gpio), gpio_en); + + return 0; +} + +static inline int ar7_gpio_disable_titan(unsigned gpio) +{ + void __iomem *gpio_en0 = titan_gpio_chip.regs + TITAN_GPIO_ENBL_0; + void __iomem *gpio_en1 = titan_gpio_chip.regs + TITAN_GPIO_ENBL_1; + + writel(readl(gpio >> 5 ? gpio_en1 : gpio_en0) & ~(1 << (gpio & 0x1f)), + gpio >> 5 ? gpio_en1 : gpio_en0); + + return 0; +} + +int ar7_gpio_disable(unsigned gpio) +{ + return ar7_is_titan() ? ar7_gpio_disable_titan(gpio) : + ar7_gpio_disable_ar7(gpio); +} +EXPORT_SYMBOL(ar7_gpio_disable); + +struct titan_gpio_cfg { + u32 reg; + u32 shift; + u32 func; +}; + +static const struct titan_gpio_cfg titan_gpio_table[] = { + /* reg, start bit, mux value */ + {4, 24, 1}, + {4, 26, 1}, + {4, 28, 1}, + {4, 30, 1}, + {5, 6, 1}, + {5, 8, 1}, + {5, 10, 1}, + {5, 12, 1}, + {7, 14, 3}, + {7, 16, 3}, + {7, 18, 3}, + {7, 20, 3}, + {7, 22, 3}, + {7, 26, 3}, + {7, 28, 3}, + {7, 30, 3}, + {8, 0, 3}, + {8, 2, 3}, + {8, 4, 3}, + {8, 10, 3}, + {8, 14, 3}, + {8, 16, 3}, + {8, 18, 3}, + {8, 20, 3}, + {9, 8, 3}, + {9, 10, 3}, + {9, 12, 3}, + {9, 14, 3}, + {9, 18, 3}, + {9, 20, 3}, + {9, 24, 3}, + {9, 26, 3}, + {9, 28, 3}, + {9, 30, 3}, + {10, 0, 3}, + {10, 2, 3}, + {10, 8, 3}, + {10, 10, 3}, + {10, 12, 3}, + {10, 14, 3}, + {13, 12, 3}, + {13, 14, 3}, + {13, 16, 3}, + {13, 18, 3}, + {13, 24, 3}, + {13, 26, 3}, + {13, 28, 3}, + {13, 30, 3}, + {14, 2, 3}, + {14, 6, 3}, + {14, 8, 3}, + {14, 12, 3} +}; + +static int titan_gpio_pinsel(unsigned gpio) +{ + struct titan_gpio_cfg gpio_cfg; + u32 mux_status, pin_sel_reg, tmp; + void __iomem *pin_sel = (void __iomem *)KSEG1ADDR(AR7_REGS_PINSEL); + + if (gpio >= ARRAY_SIZE(titan_gpio_table)) + return -EINVAL; + + gpio_cfg = titan_gpio_table[gpio]; + pin_sel_reg = gpio_cfg.reg - 1; + + mux_status = (readl(pin_sel + pin_sel_reg) >> gpio_cfg.shift) & 0x3; + + /* Check the mux status */ + if (!((mux_status == 0) || (mux_status == gpio_cfg.func))) + return 0; + + /* Set the pin sel value */ + tmp = readl(pin_sel + pin_sel_reg); + tmp |= ((gpio_cfg.func & 0x3) << gpio_cfg.shift); + writel(tmp, pin_sel + pin_sel_reg); + + return 0; +} + +/* Perform minimal Titan GPIO configuration */ +static void titan_gpio_init(void) +{ + unsigned i; + + for (i = 44; i < 48; i++) { + titan_gpio_pinsel(i); + ar7_gpio_enable_titan(i); + titan_gpio_direction_input(&titan_gpio_chip.chip, i); + } +} + +int __init ar7_gpio_init(void) +{ + int ret; + struct ar7_gpio_chip *gpch; + unsigned size; + + if (!ar7_is_titan()) { + gpch = &ar7_gpio_chip; + size = 0x10; + } else { + gpch = &titan_gpio_chip; + size = 0x1f; + } + + gpch->regs = ioremap(AR7_REGS_GPIO, size); + if (!gpch->regs) { + printk(KERN_ERR "%s: failed to ioremap regs\n", + gpch->chip.label); + return -ENOMEM; + } + + ret = gpiochip_add_data(&gpch->chip, gpch); + if (ret) { + printk(KERN_ERR "%s: failed to add gpiochip\n", + gpch->chip.label); + iounmap(gpch->regs); + return ret; + } + printk(KERN_INFO "%s: registered %d GPIOs\n", + gpch->chip.label, gpch->chip.ngpio); + + if (ar7_is_titan()) + titan_gpio_init(); + + return ret; +} -- cgit v1.2.3