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/gpio/gpio-gpio-mm.c | 195 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 195 insertions(+) create mode 100644 drivers/gpio/gpio-gpio-mm.c (limited to 'drivers/gpio/gpio-gpio-mm.c') diff --git a/drivers/gpio/gpio-gpio-mm.c b/drivers/gpio/gpio-gpio-mm.c new file mode 100644 index 000000000..2689671b6 --- /dev/null +++ b/drivers/gpio/gpio-gpio-mm.c @@ -0,0 +1,195 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * GPIO driver for the Diamond Systems GPIO-MM + * Copyright (C) 2016 William Breathitt Gray + * + * This driver supports the following Diamond Systems devices: GPIO-MM and + * GPIO-MM-12. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "gpio-i8255.h" + +MODULE_IMPORT_NS(I8255); + +#define GPIOMM_EXTENT 8 +#define MAX_NUM_GPIOMM max_num_isa_dev(GPIOMM_EXTENT) + +static unsigned int base[MAX_NUM_GPIOMM]; +static unsigned int num_gpiomm; +module_param_hw_array(base, uint, ioport, &num_gpiomm, 0); +MODULE_PARM_DESC(base, "Diamond Systems GPIO-MM base addresses"); + +#define GPIOMM_NUM_PPI 2 + +/** + * struct gpiomm_gpio - GPIO device private data structure + * @chip: instance of the gpio_chip + * @ppi_state: Programmable Peripheral Interface group states + * @ppi: Programmable Peripheral Interface groups + */ +struct gpiomm_gpio { + struct gpio_chip chip; + struct i8255_state ppi_state[GPIOMM_NUM_PPI]; + struct i8255 __iomem *ppi; +}; + +static int gpiomm_gpio_get_direction(struct gpio_chip *chip, + unsigned int offset) +{ + struct gpiomm_gpio *const gpiommgpio = gpiochip_get_data(chip); + + if (i8255_get_direction(gpiommgpio->ppi_state, offset)) + return GPIO_LINE_DIRECTION_IN; + + return GPIO_LINE_DIRECTION_OUT; +} + +static int gpiomm_gpio_direction_input(struct gpio_chip *chip, + unsigned int offset) +{ + struct gpiomm_gpio *const gpiommgpio = gpiochip_get_data(chip); + + i8255_direction_input(gpiommgpio->ppi, gpiommgpio->ppi_state, offset); + + return 0; +} + +static int gpiomm_gpio_direction_output(struct gpio_chip *chip, + unsigned int offset, int value) +{ + struct gpiomm_gpio *const gpiommgpio = gpiochip_get_data(chip); + + i8255_direction_output(gpiommgpio->ppi, gpiommgpio->ppi_state, offset, + value); + + return 0; +} + +static int gpiomm_gpio_get(struct gpio_chip *chip, unsigned int offset) +{ + struct gpiomm_gpio *const gpiommgpio = gpiochip_get_data(chip); + + return i8255_get(gpiommgpio->ppi, offset); +} + +static int gpiomm_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask, + unsigned long *bits) +{ + struct gpiomm_gpio *const gpiommgpio = gpiochip_get_data(chip); + + i8255_get_multiple(gpiommgpio->ppi, mask, bits, chip->ngpio); + + return 0; +} + +static void gpiomm_gpio_set(struct gpio_chip *chip, unsigned int offset, + int value) +{ + struct gpiomm_gpio *const gpiommgpio = gpiochip_get_data(chip); + + i8255_set(gpiommgpio->ppi, gpiommgpio->ppi_state, offset, value); +} + +static void gpiomm_gpio_set_multiple(struct gpio_chip *chip, + unsigned long *mask, unsigned long *bits) +{ + struct gpiomm_gpio *const gpiommgpio = gpiochip_get_data(chip); + + i8255_set_multiple(gpiommgpio->ppi, gpiommgpio->ppi_state, mask, bits, + chip->ngpio); +} + +#define GPIOMM_NGPIO 48 +static const char *gpiomm_names[GPIOMM_NGPIO] = { + "Port 1A0", "Port 1A1", "Port 1A2", "Port 1A3", "Port 1A4", "Port 1A5", + "Port 1A6", "Port 1A7", "Port 1B0", "Port 1B1", "Port 1B2", "Port 1B3", + "Port 1B4", "Port 1B5", "Port 1B6", "Port 1B7", "Port 1C0", "Port 1C1", + "Port 1C2", "Port 1C3", "Port 1C4", "Port 1C5", "Port 1C6", "Port 1C7", + "Port 2A0", "Port 2A1", "Port 2A2", "Port 2A3", "Port 2A4", "Port 2A5", + "Port 2A6", "Port 2A7", "Port 2B0", "Port 2B1", "Port 2B2", "Port 2B3", + "Port 2B4", "Port 2B5", "Port 2B6", "Port 2B7", "Port 2C0", "Port 2C1", + "Port 2C2", "Port 2C3", "Port 2C4", "Port 2C5", "Port 2C6", "Port 2C7", +}; + +static void gpiomm_init_dio(struct i8255 __iomem *const ppi, + struct i8255_state *const ppi_state) +{ + const unsigned long ngpio = 24; + const unsigned long mask = GENMASK(ngpio - 1, 0); + const unsigned long bits = 0; + unsigned long i; + + /* Initialize all GPIO to output 0 */ + for (i = 0; i < GPIOMM_NUM_PPI; i++) { + i8255_mode0_output(&ppi[i]); + i8255_set_multiple(&ppi[i], &ppi_state[i], &mask, &bits, ngpio); + } +} + +static int gpiomm_probe(struct device *dev, unsigned int id) +{ + struct gpiomm_gpio *gpiommgpio; + const char *const name = dev_name(dev); + int err; + + gpiommgpio = devm_kzalloc(dev, sizeof(*gpiommgpio), GFP_KERNEL); + if (!gpiommgpio) + return -ENOMEM; + + if (!devm_request_region(dev, base[id], GPIOMM_EXTENT, name)) { + dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n", + base[id], base[id] + GPIOMM_EXTENT); + return -EBUSY; + } + + gpiommgpio->ppi = devm_ioport_map(dev, base[id], GPIOMM_EXTENT); + if (!gpiommgpio->ppi) + return -ENOMEM; + + gpiommgpio->chip.label = name; + gpiommgpio->chip.parent = dev; + gpiommgpio->chip.owner = THIS_MODULE; + gpiommgpio->chip.base = -1; + gpiommgpio->chip.ngpio = GPIOMM_NGPIO; + gpiommgpio->chip.names = gpiomm_names; + gpiommgpio->chip.get_direction = gpiomm_gpio_get_direction; + gpiommgpio->chip.direction_input = gpiomm_gpio_direction_input; + gpiommgpio->chip.direction_output = gpiomm_gpio_direction_output; + gpiommgpio->chip.get = gpiomm_gpio_get; + gpiommgpio->chip.get_multiple = gpiomm_gpio_get_multiple; + gpiommgpio->chip.set = gpiomm_gpio_set; + gpiommgpio->chip.set_multiple = gpiomm_gpio_set_multiple; + + i8255_state_init(gpiommgpio->ppi_state, GPIOMM_NUM_PPI); + gpiomm_init_dio(gpiommgpio->ppi, gpiommgpio->ppi_state); + + err = devm_gpiochip_add_data(dev, &gpiommgpio->chip, gpiommgpio); + if (err) { + dev_err(dev, "GPIO registering failed (%d)\n", err); + return err; + } + + return 0; +} + +static struct isa_driver gpiomm_driver = { + .probe = gpiomm_probe, + .driver = { + .name = "gpio-mm" + }, +}; + +module_isa_driver(gpiomm_driver, num_gpiomm); + +MODULE_AUTHOR("William Breathitt Gray "); +MODULE_DESCRIPTION("Diamond Systems GPIO-MM GPIO driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3