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/pinctrl/ralink/pinctrl-ralink.c | 351 ++++++++++++++++++++++++++++++++ 1 file changed, 351 insertions(+) create mode 100644 drivers/pinctrl/ralink/pinctrl-ralink.c (limited to 'drivers/pinctrl/ralink/pinctrl-ralink.c') diff --git a/drivers/pinctrl/ralink/pinctrl-ralink.c b/drivers/pinctrl/ralink/pinctrl-ralink.c new file mode 100644 index 000000000..770862f45 --- /dev/null +++ b/drivers/pinctrl/ralink/pinctrl-ralink.c @@ -0,0 +1,351 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2013 John Crispin + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "pinctrl-ralink.h" +#include "../core.h" +#include "../pinctrl-utils.h" + +#define SYSC_REG_GPIO_MODE 0x60 +#define SYSC_REG_GPIO_MODE2 0x64 + +struct ralink_priv { + struct device *dev; + + struct pinctrl_pin_desc *pads; + struct pinctrl_desc *desc; + + struct ralink_pmx_func **func; + int func_count; + + struct ralink_pmx_group *groups; + const char **group_names; + int group_count; + + u8 *gpio; + int max_pins; +}; + +static int ralink_get_group_count(struct pinctrl_dev *pctrldev) +{ + struct ralink_priv *p = pinctrl_dev_get_drvdata(pctrldev); + + return p->group_count; +} + +static const char *ralink_get_group_name(struct pinctrl_dev *pctrldev, + unsigned int group) +{ + struct ralink_priv *p = pinctrl_dev_get_drvdata(pctrldev); + + return (group >= p->group_count) ? NULL : p->group_names[group]; +} + +static int ralink_get_group_pins(struct pinctrl_dev *pctrldev, + unsigned int group, + const unsigned int **pins, + unsigned int *num_pins) +{ + struct ralink_priv *p = pinctrl_dev_get_drvdata(pctrldev); + + if (group >= p->group_count) + return -EINVAL; + + *pins = p->groups[group].func[0].pins; + *num_pins = p->groups[group].func[0].pin_count; + + return 0; +} + +static const struct pinctrl_ops ralink_pctrl_ops = { + .get_groups_count = ralink_get_group_count, + .get_group_name = ralink_get_group_name, + .get_group_pins = ralink_get_group_pins, + .dt_node_to_map = pinconf_generic_dt_node_to_map_all, + .dt_free_map = pinconf_generic_dt_free_map, +}; + +static int ralink_pmx_func_count(struct pinctrl_dev *pctrldev) +{ + struct ralink_priv *p = pinctrl_dev_get_drvdata(pctrldev); + + return p->func_count; +} + +static const char *ralink_pmx_func_name(struct pinctrl_dev *pctrldev, + unsigned int func) +{ + struct ralink_priv *p = pinctrl_dev_get_drvdata(pctrldev); + + return p->func[func]->name; +} + +static int ralink_pmx_group_get_groups(struct pinctrl_dev *pctrldev, + unsigned int func, + const char * const **groups, + unsigned int * const num_groups) +{ + struct ralink_priv *p = pinctrl_dev_get_drvdata(pctrldev); + + if (p->func[func]->group_count == 1) + *groups = &p->group_names[p->func[func]->groups[0]]; + else + *groups = p->group_names; + + *num_groups = p->func[func]->group_count; + + return 0; +} + +static int ralink_pmx_group_enable(struct pinctrl_dev *pctrldev, + unsigned int func, unsigned int group) +{ + struct ralink_priv *p = pinctrl_dev_get_drvdata(pctrldev); + u32 mode = 0; + u32 reg = SYSC_REG_GPIO_MODE; + int i; + int shift; + + /* dont allow double use */ + if (p->groups[group].enabled) { + dev_err(p->dev, "%s is already enabled\n", + p->groups[group].name); + return 0; + } + + p->groups[group].enabled = 1; + p->func[func]->enabled = 1; + + shift = p->groups[group].shift; + if (shift >= 32) { + shift -= 32; + reg = SYSC_REG_GPIO_MODE2; + } + mode = rt_sysc_r32(reg); + mode &= ~(p->groups[group].mask << shift); + + /* mark the pins as gpio */ + for (i = 0; i < p->groups[group].func[0].pin_count; i++) + p->gpio[p->groups[group].func[0].pins[i]] = 1; + + /* function 0 is gpio and needs special handling */ + if (func == 0) { + mode |= p->groups[group].gpio << shift; + } else { + for (i = 0; i < p->func[func]->pin_count; i++) + p->gpio[p->func[func]->pins[i]] = 0; + mode |= p->func[func]->value << shift; + } + rt_sysc_w32(mode, reg); + + return 0; +} + +static int ralink_pmx_group_gpio_request_enable(struct pinctrl_dev *pctrldev, + struct pinctrl_gpio_range *range, + unsigned int pin) +{ + struct ralink_priv *p = pinctrl_dev_get_drvdata(pctrldev); + + if (!p->gpio[pin]) { + dev_err(p->dev, "pin %d is not set to gpio mux\n", pin); + return -EINVAL; + } + + return 0; +} + +static const struct pinmux_ops ralink_pmx_group_ops = { + .get_functions_count = ralink_pmx_func_count, + .get_function_name = ralink_pmx_func_name, + .get_function_groups = ralink_pmx_group_get_groups, + .set_mux = ralink_pmx_group_enable, + .gpio_request_enable = ralink_pmx_group_gpio_request_enable, +}; + +static struct pinctrl_desc ralink_pctrl_desc = { + .owner = THIS_MODULE, + .name = "ralink-pinctrl", + .pctlops = &ralink_pctrl_ops, + .pmxops = &ralink_pmx_group_ops, +}; + +static struct ralink_pmx_func gpio_func = { + .name = "gpio", +}; + +static int ralink_pinctrl_index(struct ralink_priv *p) +{ + struct ralink_pmx_group *mux = p->groups; + int i, j, c = 0; + + /* count the mux functions */ + while (mux->name) { + p->group_count++; + mux++; + } + + /* allocate the group names array needed by the gpio function */ + p->group_names = devm_kcalloc(p->dev, p->group_count, + sizeof(char *), GFP_KERNEL); + if (!p->group_names) + return -ENOMEM; + + for (i = 0; i < p->group_count; i++) { + p->group_names[i] = p->groups[i].name; + p->func_count += p->groups[i].func_count; + } + + /* we have a dummy function[0] for gpio */ + p->func_count++; + + /* allocate our function and group mapping index buffers */ + p->func = devm_kcalloc(p->dev, p->func_count, + sizeof(*p->func), GFP_KERNEL); + gpio_func.groups = devm_kcalloc(p->dev, p->group_count, sizeof(int), + GFP_KERNEL); + if (!p->func || !gpio_func.groups) + return -ENOMEM; + + /* add a backpointer to the function so it knows its group */ + gpio_func.group_count = p->group_count; + for (i = 0; i < gpio_func.group_count; i++) + gpio_func.groups[i] = i; + + p->func[c] = &gpio_func; + c++; + + /* add remaining functions */ + for (i = 0; i < p->group_count; i++) { + for (j = 0; j < p->groups[i].func_count; j++) { + p->func[c] = &p->groups[i].func[j]; + p->func[c]->groups = devm_kzalloc(p->dev, sizeof(int), + GFP_KERNEL); + if (!p->func[c]->groups) + return -ENOMEM; + p->func[c]->groups[0] = i; + p->func[c]->group_count = 1; + c++; + } + } + return 0; +} + +static int ralink_pinctrl_pins(struct ralink_priv *p) +{ + int i, j; + + /* + * loop over the functions and initialize the pins array. + * also work out the highest pin used. + */ + for (i = 0; i < p->func_count; i++) { + int pin; + + if (!p->func[i]->pin_count) + continue; + + p->func[i]->pins = devm_kcalloc(p->dev, + p->func[i]->pin_count, + sizeof(int), + GFP_KERNEL); + if (!p->func[i]->pins) + return -ENOMEM; + for (j = 0; j < p->func[i]->pin_count; j++) + p->func[i]->pins[j] = p->func[i]->pin_first + j; + + pin = p->func[i]->pin_first + p->func[i]->pin_count; + if (pin > p->max_pins) + p->max_pins = pin; + } + + /* the buffer that tells us which pins are gpio */ + p->gpio = devm_kcalloc(p->dev, p->max_pins, sizeof(u8), GFP_KERNEL); + /* the pads needed to tell pinctrl about our pins */ + p->pads = devm_kcalloc(p->dev, p->max_pins, + sizeof(struct pinctrl_pin_desc), GFP_KERNEL); + if (!p->pads || !p->gpio) + return -ENOMEM; + + memset(p->gpio, 1, sizeof(u8) * p->max_pins); + for (i = 0; i < p->func_count; i++) { + if (!p->func[i]->pin_count) + continue; + + for (j = 0; j < p->func[i]->pin_count; j++) + p->gpio[p->func[i]->pins[j]] = 0; + } + + /* pin 0 is always a gpio */ + p->gpio[0] = 1; + + /* set the pads */ + for (i = 0; i < p->max_pins; i++) { + /* strlen("ioXY") + 1 = 5 */ + char *name = devm_kzalloc(p->dev, 5, GFP_KERNEL); + + if (!name) + return -ENOMEM; + snprintf(name, 5, "io%d", i); + p->pads[i].number = i; + p->pads[i].name = name; + } + p->desc->pins = p->pads; + p->desc->npins = p->max_pins; + + return 0; +} + +int ralink_pinctrl_init(struct platform_device *pdev, + struct ralink_pmx_group *data) +{ + struct ralink_priv *p; + struct pinctrl_dev *dev; + int err; + + if (!data) + return -ENOTSUPP; + + /* setup the private data */ + p = devm_kzalloc(&pdev->dev, sizeof(struct ralink_priv), GFP_KERNEL); + if (!p) + return -ENOMEM; + + p->dev = &pdev->dev; + p->desc = &ralink_pctrl_desc; + p->groups = data; + platform_set_drvdata(pdev, p); + + /* init the device */ + err = ralink_pinctrl_index(p); + if (err) { + dev_err(&pdev->dev, "failed to load index\n"); + return err; + } + + err = ralink_pinctrl_pins(p); + if (err) { + dev_err(&pdev->dev, "failed to load pins\n"); + return err; + } + dev = pinctrl_register(p->desc, &pdev->dev, p); + + return PTR_ERR_OR_ZERO(dev); +} -- cgit v1.2.3