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/usb/host/ohci-exynos.c | 325 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 325 insertions(+) create mode 100644 drivers/usb/host/ohci-exynos.c (limited to 'drivers/usb/host/ohci-exynos.c') diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c new file mode 100644 index 000000000..8d7977fd5 --- /dev/null +++ b/drivers/usb/host/ohci-exynos.c @@ -0,0 +1,325 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * SAMSUNG EXYNOS USB HOST OHCI Controller + * + * Copyright (C) 2011 Samsung Electronics Co.Ltd + * Author: Jingoo Han + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ohci.h" + +#define DRIVER_DESC "OHCI Exynos driver" + +static struct hc_driver __read_mostly exynos_ohci_hc_driver; + +#define to_exynos_ohci(hcd) (struct exynos_ohci_hcd *)(hcd_to_ohci(hcd)->priv) + +#define PHY_NUMBER 3 + +struct exynos_ohci_hcd { + struct clk *clk; + struct device_node *of_node; + struct phy *phy[PHY_NUMBER]; + bool legacy_phy; +}; + +static int exynos_ohci_get_phy(struct device *dev, + struct exynos_ohci_hcd *exynos_ohci) +{ + struct device_node *child; + struct phy *phy; + int phy_number, num_phys; + int ret; + + /* Get PHYs for the controller */ + num_phys = of_count_phandle_with_args(dev->of_node, "phys", + "#phy-cells"); + for (phy_number = 0; phy_number < num_phys; phy_number++) { + phy = devm_of_phy_get_by_index(dev, dev->of_node, phy_number); + if (IS_ERR(phy)) + return PTR_ERR(phy); + exynos_ohci->phy[phy_number] = phy; + } + if (num_phys > 0) + return 0; + + /* Get PHYs using legacy bindings */ + for_each_available_child_of_node(dev->of_node, child) { + ret = of_property_read_u32(child, "reg", &phy_number); + if (ret) { + dev_err(dev, "Failed to parse device tree\n"); + of_node_put(child); + return ret; + } + + if (phy_number >= PHY_NUMBER) { + dev_err(dev, "Invalid number of PHYs\n"); + of_node_put(child); + return -EINVAL; + } + + phy = devm_of_phy_get(dev, child, NULL); + exynos_ohci->phy[phy_number] = phy; + if (IS_ERR(phy)) { + ret = PTR_ERR(phy); + if (ret == -EPROBE_DEFER) { + of_node_put(child); + return ret; + } else if (ret != -ENOSYS && ret != -ENODEV) { + dev_err(dev, + "Error retrieving usb2 phy: %d\n", ret); + of_node_put(child); + return ret; + } + } + } + + exynos_ohci->legacy_phy = true; + return 0; +} + +static int exynos_ohci_phy_enable(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd); + int i; + int ret = 0; + + for (i = 0; ret == 0 && i < PHY_NUMBER; i++) + if (!IS_ERR(exynos_ohci->phy[i])) + ret = phy_power_on(exynos_ohci->phy[i]); + if (ret) + for (i--; i >= 0; i--) + if (!IS_ERR(exynos_ohci->phy[i])) + phy_power_off(exynos_ohci->phy[i]); + + return ret; +} + +static void exynos_ohci_phy_disable(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd); + int i; + + for (i = 0; i < PHY_NUMBER; i++) + if (!IS_ERR(exynos_ohci->phy[i])) + phy_power_off(exynos_ohci->phy[i]); +} + +static int exynos_ohci_probe(struct platform_device *pdev) +{ + struct exynos_ohci_hcd *exynos_ohci; + struct usb_hcd *hcd; + struct resource *res; + int irq; + int err; + + /* + * Right now device-tree probed devices don't get dma_mask set. + * Since shared usb code relies on it, set it here for now. + * Once we move to full device tree support this will vanish off. + */ + err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (err) + return err; + + hcd = usb_create_hcd(&exynos_ohci_hc_driver, + &pdev->dev, dev_name(&pdev->dev)); + if (!hcd) { + dev_err(&pdev->dev, "Unable to create HCD\n"); + return -ENOMEM; + } + + exynos_ohci = to_exynos_ohci(hcd); + + err = exynos_ohci_get_phy(&pdev->dev, exynos_ohci); + if (err) + goto fail_clk; + + exynos_ohci->clk = devm_clk_get(&pdev->dev, "usbhost"); + + if (IS_ERR(exynos_ohci->clk)) { + dev_err(&pdev->dev, "Failed to get usbhost clock\n"); + err = PTR_ERR(exynos_ohci->clk); + goto fail_clk; + } + + err = clk_prepare_enable(exynos_ohci->clk); + if (err) + goto fail_clk; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + hcd->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(hcd->regs)) { + err = PTR_ERR(hcd->regs); + goto fail_io; + } + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + err = irq; + goto fail_io; + } + + platform_set_drvdata(pdev, hcd); + + err = exynos_ohci_phy_enable(&pdev->dev); + if (err) { + dev_err(&pdev->dev, "Failed to enable USB phy\n"); + goto fail_io; + } + + /* + * Workaround: reset of_node pointer to avoid conflict between legacy + * Exynos OHCI port subnodes and generic USB device bindings + */ + exynos_ohci->of_node = pdev->dev.of_node; + if (exynos_ohci->legacy_phy) + pdev->dev.of_node = NULL; + + err = usb_add_hcd(hcd, irq, IRQF_SHARED); + if (err) { + dev_err(&pdev->dev, "Failed to add USB HCD\n"); + goto fail_add_hcd; + } + device_wakeup_enable(hcd->self.controller); + return 0; + +fail_add_hcd: + exynos_ohci_phy_disable(&pdev->dev); + pdev->dev.of_node = exynos_ohci->of_node; +fail_io: + clk_disable_unprepare(exynos_ohci->clk); +fail_clk: + usb_put_hcd(hcd); + return err; +} + +static int exynos_ohci_remove(struct platform_device *pdev) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd); + + pdev->dev.of_node = exynos_ohci->of_node; + + usb_remove_hcd(hcd); + + exynos_ohci_phy_disable(&pdev->dev); + + clk_disable_unprepare(exynos_ohci->clk); + + usb_put_hcd(hcd); + + return 0; +} + +static void exynos_ohci_shutdown(struct platform_device *pdev) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + + if (hcd->driver->shutdown) + hcd->driver->shutdown(hcd); +} + +#ifdef CONFIG_PM +static int exynos_ohci_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd); + bool do_wakeup = device_may_wakeup(dev); + int rc = ohci_suspend(hcd, do_wakeup); + + if (rc) + return rc; + + exynos_ohci_phy_disable(dev); + + clk_disable_unprepare(exynos_ohci->clk); + + return 0; +} + +static int exynos_ohci_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd); + int ret; + + clk_prepare_enable(exynos_ohci->clk); + + ret = exynos_ohci_phy_enable(dev); + if (ret) { + dev_err(dev, "Failed to enable USB phy\n"); + clk_disable_unprepare(exynos_ohci->clk); + return ret; + } + + ohci_resume(hcd, false); + + return 0; +} +#else +#define exynos_ohci_suspend NULL +#define exynos_ohci_resume NULL +#endif + +static const struct ohci_driver_overrides exynos_overrides __initconst = { + .extra_priv_size = sizeof(struct exynos_ohci_hcd), +}; + +static const struct dev_pm_ops exynos_ohci_pm_ops = { + .suspend = exynos_ohci_suspend, + .resume = exynos_ohci_resume, +}; + +#ifdef CONFIG_OF +static const struct of_device_id exynos_ohci_match[] = { + { .compatible = "samsung,exynos4210-ohci" }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_ohci_match); +#endif + +static struct platform_driver exynos_ohci_driver = { + .probe = exynos_ohci_probe, + .remove = exynos_ohci_remove, + .shutdown = exynos_ohci_shutdown, + .driver = { + .name = "exynos-ohci", + .pm = &exynos_ohci_pm_ops, + .of_match_table = of_match_ptr(exynos_ohci_match), + } +}; +static int __init ohci_exynos_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + ohci_init_driver(&exynos_ohci_hc_driver, &exynos_overrides); + return platform_driver_register(&exynos_ohci_driver); +} +module_init(ohci_exynos_init); + +static void __exit ohci_exynos_cleanup(void) +{ + platform_driver_unregister(&exynos_ohci_driver); +} +module_exit(ohci_exynos_cleanup); + +MODULE_ALIAS("platform:exynos-ohci"); +MODULE_AUTHOR("Jingoo Han "); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3