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/phy/phy-ulpi.c | 303 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 303 insertions(+) create mode 100644 drivers/usb/phy/phy-ulpi.c (limited to 'drivers/usb/phy/phy-ulpi.c') diff --git a/drivers/usb/phy/phy-ulpi.c b/drivers/usb/phy/phy-ulpi.c new file mode 100644 index 000000000..e683a37e3 --- /dev/null +++ b/drivers/usb/phy/phy-ulpi.c @@ -0,0 +1,303 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Generic ULPI USB transceiver support + * + * Copyright (C) 2009 Daniel Mack + * + * Based on sources from + * + * Sascha Hauer + * Freescale Semiconductors + */ + +#include +#include +#include +#include +#include +#include + + +struct ulpi_info { + unsigned int id; + char *name; +}; + +#define ULPI_ID(vendor, product) (((vendor) << 16) | (product)) +#define ULPI_INFO(_id, _name) \ + { \ + .id = (_id), \ + .name = (_name), \ + } + +/* ULPI hardcoded IDs, used for probing */ +static struct ulpi_info ulpi_ids[] = { + ULPI_INFO(ULPI_ID(0x04cc, 0x1504), "NXP ISP1504"), + ULPI_INFO(ULPI_ID(0x0424, 0x0006), "SMSC USB331x"), + ULPI_INFO(ULPI_ID(0x0424, 0x0007), "SMSC USB3320"), + ULPI_INFO(ULPI_ID(0x0424, 0x0009), "SMSC USB334x"), + ULPI_INFO(ULPI_ID(0x0451, 0x1507), "TI TUSB1210"), +}; + +static int ulpi_set_otg_flags(struct usb_phy *phy) +{ + unsigned int flags = ULPI_OTG_CTRL_DP_PULLDOWN | + ULPI_OTG_CTRL_DM_PULLDOWN; + + if (phy->flags & ULPI_OTG_ID_PULLUP) + flags |= ULPI_OTG_CTRL_ID_PULLUP; + + /* + * ULPI Specification rev.1.1 default + * for Dp/DmPulldown is enabled. + */ + if (phy->flags & ULPI_OTG_DP_PULLDOWN_DIS) + flags &= ~ULPI_OTG_CTRL_DP_PULLDOWN; + + if (phy->flags & ULPI_OTG_DM_PULLDOWN_DIS) + flags &= ~ULPI_OTG_CTRL_DM_PULLDOWN; + + if (phy->flags & ULPI_OTG_EXTVBUSIND) + flags |= ULPI_OTG_CTRL_EXTVBUSIND; + + return usb_phy_io_write(phy, flags, ULPI_OTG_CTRL); +} + +static int ulpi_set_fc_flags(struct usb_phy *phy) +{ + unsigned int flags = 0; + + /* + * ULPI Specification rev.1.1 default + * for XcvrSelect is Full Speed. + */ + if (phy->flags & ULPI_FC_HS) + flags |= ULPI_FUNC_CTRL_HIGH_SPEED; + else if (phy->flags & ULPI_FC_LS) + flags |= ULPI_FUNC_CTRL_LOW_SPEED; + else if (phy->flags & ULPI_FC_FS4LS) + flags |= ULPI_FUNC_CTRL_FS4LS; + else + flags |= ULPI_FUNC_CTRL_FULL_SPEED; + + if (phy->flags & ULPI_FC_TERMSEL) + flags |= ULPI_FUNC_CTRL_TERMSELECT; + + /* + * ULPI Specification rev.1.1 default + * for OpMode is Normal Operation. + */ + if (phy->flags & ULPI_FC_OP_NODRV) + flags |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; + else if (phy->flags & ULPI_FC_OP_DIS_NRZI) + flags |= ULPI_FUNC_CTRL_OPMODE_DISABLE_NRZI; + else if (phy->flags & ULPI_FC_OP_NSYNC_NEOP) + flags |= ULPI_FUNC_CTRL_OPMODE_NOSYNC_NOEOP; + else + flags |= ULPI_FUNC_CTRL_OPMODE_NORMAL; + + /* + * ULPI Specification rev.1.1 default + * for SuspendM is Powered. + */ + flags |= ULPI_FUNC_CTRL_SUSPENDM; + + return usb_phy_io_write(phy, flags, ULPI_FUNC_CTRL); +} + +static int ulpi_set_ic_flags(struct usb_phy *phy) +{ + unsigned int flags = 0; + + if (phy->flags & ULPI_IC_AUTORESUME) + flags |= ULPI_IFC_CTRL_AUTORESUME; + + if (phy->flags & ULPI_IC_EXTVBUS_INDINV) + flags |= ULPI_IFC_CTRL_EXTERNAL_VBUS; + + if (phy->flags & ULPI_IC_IND_PASSTHRU) + flags |= ULPI_IFC_CTRL_PASSTHRU; + + if (phy->flags & ULPI_IC_PROTECT_DIS) + flags |= ULPI_IFC_CTRL_PROTECT_IFC_DISABLE; + + return usb_phy_io_write(phy, flags, ULPI_IFC_CTRL); +} + +static int ulpi_set_flags(struct usb_phy *phy) +{ + int ret; + + ret = ulpi_set_otg_flags(phy); + if (ret) + return ret; + + ret = ulpi_set_ic_flags(phy); + if (ret) + return ret; + + return ulpi_set_fc_flags(phy); +} + +static int ulpi_check_integrity(struct usb_phy *phy) +{ + int ret, i; + unsigned int val = 0x55; + + for (i = 0; i < 2; i++) { + ret = usb_phy_io_write(phy, val, ULPI_SCRATCH); + if (ret < 0) + return ret; + + ret = usb_phy_io_read(phy, ULPI_SCRATCH); + if (ret < 0) + return ret; + + if (ret != val) { + pr_err("ULPI integrity check: failed!"); + return -ENODEV; + } + val = val << 1; + } + + pr_info("ULPI integrity check: passed.\n"); + + return 0; +} + +static int ulpi_init(struct usb_phy *phy) +{ + int i, vid, pid, ret; + u32 ulpi_id = 0; + + for (i = 0; i < 4; i++) { + ret = usb_phy_io_read(phy, ULPI_PRODUCT_ID_HIGH - i); + if (ret < 0) + return ret; + ulpi_id = (ulpi_id << 8) | ret; + } + vid = ulpi_id & 0xffff; + pid = ulpi_id >> 16; + + pr_info("ULPI transceiver vendor/product ID 0x%04x/0x%04x\n", vid, pid); + + for (i = 0; i < ARRAY_SIZE(ulpi_ids); i++) { + if (ulpi_ids[i].id == ULPI_ID(vid, pid)) { + pr_info("Found %s ULPI transceiver.\n", + ulpi_ids[i].name); + break; + } + } + + ret = ulpi_check_integrity(phy); + if (ret) + return ret; + + return ulpi_set_flags(phy); +} + +static int ulpi_set_host(struct usb_otg *otg, struct usb_bus *host) +{ + struct usb_phy *phy = otg->usb_phy; + unsigned int flags = usb_phy_io_read(phy, ULPI_IFC_CTRL); + + if (!host) { + otg->host = NULL; + return 0; + } + + otg->host = host; + + flags &= ~(ULPI_IFC_CTRL_6_PIN_SERIAL_MODE | + ULPI_IFC_CTRL_3_PIN_SERIAL_MODE | + ULPI_IFC_CTRL_CARKITMODE); + + if (phy->flags & ULPI_IC_6PIN_SERIAL) + flags |= ULPI_IFC_CTRL_6_PIN_SERIAL_MODE; + else if (phy->flags & ULPI_IC_3PIN_SERIAL) + flags |= ULPI_IFC_CTRL_3_PIN_SERIAL_MODE; + else if (phy->flags & ULPI_IC_CARKIT) + flags |= ULPI_IFC_CTRL_CARKITMODE; + + return usb_phy_io_write(phy, flags, ULPI_IFC_CTRL); +} + +static int ulpi_set_vbus(struct usb_otg *otg, bool on) +{ + struct usb_phy *phy = otg->usb_phy; + unsigned int flags = usb_phy_io_read(phy, ULPI_OTG_CTRL); + + flags &= ~(ULPI_OTG_CTRL_DRVVBUS | ULPI_OTG_CTRL_DRVVBUS_EXT); + + if (on) { + if (phy->flags & ULPI_OTG_DRVVBUS) + flags |= ULPI_OTG_CTRL_DRVVBUS; + + if (phy->flags & ULPI_OTG_DRVVBUS_EXT) + flags |= ULPI_OTG_CTRL_DRVVBUS_EXT; + } + + return usb_phy_io_write(phy, flags, ULPI_OTG_CTRL); +} + +static void otg_ulpi_init(struct usb_phy *phy, struct usb_otg *otg, + struct usb_phy_io_ops *ops, + unsigned int flags) +{ + phy->label = "ULPI"; + phy->flags = flags; + phy->io_ops = ops; + phy->otg = otg; + phy->init = ulpi_init; + + otg->usb_phy = phy; + otg->set_host = ulpi_set_host; + otg->set_vbus = ulpi_set_vbus; +} + +struct usb_phy * +otg_ulpi_create(struct usb_phy_io_ops *ops, + unsigned int flags) +{ + struct usb_phy *phy; + struct usb_otg *otg; + + phy = kzalloc(sizeof(*phy), GFP_KERNEL); + if (!phy) + return NULL; + + otg = kzalloc(sizeof(*otg), GFP_KERNEL); + if (!otg) { + kfree(phy); + return NULL; + } + + otg_ulpi_init(phy, otg, ops, flags); + + return phy; +} +EXPORT_SYMBOL_GPL(otg_ulpi_create); + +struct usb_phy * +devm_otg_ulpi_create(struct device *dev, + struct usb_phy_io_ops *ops, + unsigned int flags) +{ + struct usb_phy *phy; + struct usb_otg *otg; + + phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL); + if (!phy) + return NULL; + + otg = devm_kzalloc(dev, sizeof(*otg), GFP_KERNEL); + if (!otg) { + devm_kfree(dev, phy); + return NULL; + } + + otg_ulpi_init(phy, otg, ops, flags); + + return phy; +} +EXPORT_SYMBOL_GPL(devm_otg_ulpi_create); -- cgit v1.2.3