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/clk/visconti/clkc.c | 206 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 206 insertions(+) create mode 100644 drivers/clk/visconti/clkc.c (limited to 'drivers/clk/visconti/clkc.c') diff --git a/drivers/clk/visconti/clkc.c b/drivers/clk/visconti/clkc.c new file mode 100644 index 000000000..d0b193b5d --- /dev/null +++ b/drivers/clk/visconti/clkc.c @@ -0,0 +1,206 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Toshiba Visconti clock controller + * + * Copyright (c) 2021 TOSHIBA CORPORATION + * Copyright (c) 2021 Toshiba Electronic Devices & Storage Corporation + * + * Nobuhiro Iwamatsu + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "clkc.h" + +static inline struct visconti_clk_gate *to_visconti_clk_gate(struct clk_hw *hw) +{ + return container_of(hw, struct visconti_clk_gate, hw); +} + +static int visconti_gate_clk_is_enabled(struct clk_hw *hw) +{ + struct visconti_clk_gate *gate = to_visconti_clk_gate(hw); + u32 clk = BIT(gate->ck_idx); + u32 val; + + regmap_read(gate->regmap, gate->ckon_offset, &val); + return (val & clk) ? 1 : 0; +} + +static void visconti_gate_clk_disable(struct clk_hw *hw) +{ + struct visconti_clk_gate *gate = to_visconti_clk_gate(hw); + u32 clk = BIT(gate->ck_idx); + unsigned long flags; + + spin_lock_irqsave(gate->lock, flags); + + if (!visconti_gate_clk_is_enabled(hw)) { + spin_unlock_irqrestore(gate->lock, flags); + return; + } + + regmap_update_bits(gate->regmap, gate->ckoff_offset, clk, clk); + spin_unlock_irqrestore(gate->lock, flags); +} + +static int visconti_gate_clk_enable(struct clk_hw *hw) +{ + struct visconti_clk_gate *gate = to_visconti_clk_gate(hw); + u32 clk = BIT(gate->ck_idx); + unsigned long flags; + + spin_lock_irqsave(gate->lock, flags); + regmap_update_bits(gate->regmap, gate->ckon_offset, clk, clk); + spin_unlock_irqrestore(gate->lock, flags); + + return 0; +} + +static const struct clk_ops visconti_clk_gate_ops = { + .enable = visconti_gate_clk_enable, + .disable = visconti_gate_clk_disable, + .is_enabled = visconti_gate_clk_is_enabled, +}; + +static struct clk_hw *visconti_clk_register_gate(struct device *dev, + const char *name, + const char *parent_name, + struct regmap *regmap, + const struct visconti_clk_gate_table *clks, + u32 rson_offset, + u32 rsoff_offset, + u8 rs_idx, + spinlock_t *lock) +{ + struct visconti_clk_gate *gate; + struct clk_parent_data *pdata; + struct clk_init_data init; + struct clk_hw *hw; + int ret; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return ERR_PTR(-ENOMEM); + + pdata->name = pdata->fw_name = parent_name; + + gate = devm_kzalloc(dev, sizeof(*gate), GFP_KERNEL); + if (!gate) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &visconti_clk_gate_ops; + init.flags = clks->flags; + init.parent_data = pdata; + init.num_parents = 1; + + gate->regmap = regmap; + gate->ckon_offset = clks->ckon_offset; + gate->ckoff_offset = clks->ckoff_offset; + gate->ck_idx = clks->ck_idx; + gate->rson_offset = rson_offset; + gate->rsoff_offset = rsoff_offset; + gate->rs_idx = rs_idx; + gate->lock = lock; + gate->hw.init = &init; + + hw = &gate->hw; + ret = devm_clk_hw_register(dev, hw); + if (ret) + hw = ERR_PTR(ret); + + return hw; +} + +int visconti_clk_register_gates(struct visconti_clk_provider *ctx, + const struct visconti_clk_gate_table *clks, + int num_gate, + const struct visconti_reset_data *reset, + spinlock_t *lock) +{ + struct device *dev = ctx->dev; + int i; + + for (i = 0; i < num_gate; i++) { + const char *parent_div_name = clks[i].parent_data[0].name; + struct clk_parent_data *pdata; + u32 rson_offset, rsoff_offset; + struct clk_hw *gate_clk; + struct clk_hw *div_clk; + char *dev_name; + u8 rs_idx; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + dev_name = devm_kasprintf(dev, GFP_KERNEL, "%s_div", clks[i].name); + if (!dev_name) + return -ENOMEM; + + if (clks[i].rs_id != NO_RESET) { + rson_offset = reset[clks[i].rs_id].rson_offset; + rsoff_offset = reset[clks[i].rs_id].rsoff_offset; + rs_idx = reset[clks[i].rs_id].rs_idx; + } else { + rson_offset = rsoff_offset = rs_idx = -1; + } + + div_clk = devm_clk_hw_register_fixed_factor(dev, + dev_name, + parent_div_name, + 0, 1, + clks[i].div); + if (IS_ERR(div_clk)) + return PTR_ERR(div_clk); + + gate_clk = visconti_clk_register_gate(dev, + clks[i].name, + dev_name, + ctx->regmap, + &clks[i], + rson_offset, + rsoff_offset, + rs_idx, + lock); + if (IS_ERR(gate_clk)) { + dev_err(dev, "%s: failed to register clock %s\n", + __func__, clks[i].name); + return PTR_ERR(gate_clk); + } + + ctx->clk_data.hws[clks[i].id] = gate_clk; + } + + return 0; +} + +struct visconti_clk_provider *visconti_init_clk(struct device *dev, + struct regmap *regmap, + unsigned long nr_clks) +{ + struct visconti_clk_provider *ctx; + int i; + + ctx = devm_kzalloc(dev, struct_size(ctx, clk_data.hws, nr_clks), GFP_KERNEL); + if (!ctx) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < nr_clks; ++i) + ctx->clk_data.hws[i] = ERR_PTR(-ENOENT); + ctx->clk_data.num = nr_clks; + + ctx->dev = dev; + ctx->regmap = regmap; + + return ctx; +} -- cgit v1.2.3