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/interconnect/imx/imx.c | 337 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 337 insertions(+) create mode 100644 drivers/interconnect/imx/imx.c (limited to 'drivers/interconnect/imx/imx.c') diff --git a/drivers/interconnect/imx/imx.c b/drivers/interconnect/imx/imx.c new file mode 100644 index 000000000..823d9be97 --- /dev/null +++ b/drivers/interconnect/imx/imx.c @@ -0,0 +1,337 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Interconnect framework driver for i.MX SoC + * + * Copyright (c) 2019, BayLibre + * Copyright (c) 2019-2020, NXP + * Author: Alexandre Bailon + * Author: Leonard Crestez + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "imx.h" + +/* private icc_node data */ +struct imx_icc_node { + const struct imx_icc_node_desc *desc; + const struct imx_icc_noc_setting *setting; + struct device *qos_dev; + struct dev_pm_qos_request qos_req; + struct imx_icc_provider *imx_provider; +}; + +static int imx_icc_get_bw(struct icc_node *node, u32 *avg, u32 *peak) +{ + *avg = 0; + *peak = 0; + + return 0; +} + +static int imx_icc_node_set(struct icc_node *node) +{ + struct device *dev = node->provider->dev; + struct imx_icc_node *node_data = node->data; + void __iomem *base; + u32 prio; + u64 freq; + + if (node_data->setting && node->peak_bw) { + base = node_data->setting->reg + node_data->imx_provider->noc_base; + if (node_data->setting->mode == IMX_NOC_MODE_FIXED) { + prio = node_data->setting->prio_level; + prio = PRIORITY_COMP_MARK | (prio << 8) | prio; + writel(prio, base + IMX_NOC_PRIO_REG); + writel(node_data->setting->mode, base + IMX_NOC_MODE_REG); + writel(node_data->setting->ext_control, base + IMX_NOC_EXT_CTL_REG); + dev_dbg(dev, "%s: mode: 0x%x, prio: 0x%x, ext_control: 0x%x\n", + node_data->desc->name, node_data->setting->mode, prio, + node_data->setting->ext_control); + } else if (node_data->setting->mode == IMX_NOC_MODE_UNCONFIGURED) { + dev_dbg(dev, "%s: mode not unconfigured\n", node_data->desc->name); + } else { + dev_info(dev, "%s: mode: %d not supported\n", + node_data->desc->name, node_data->setting->mode); + return -EOPNOTSUPP; + } + } + + if (!node_data->qos_dev) + return 0; + + freq = (node->avg_bw + node->peak_bw) * node_data->desc->adj->bw_mul; + do_div(freq, node_data->desc->adj->bw_div); + dev_dbg(dev, "node %s device %s avg_bw %ukBps peak_bw %ukBps min_freq %llukHz\n", + node->name, dev_name(node_data->qos_dev), + node->avg_bw, node->peak_bw, freq); + + if (freq > S32_MAX) { + dev_err(dev, "%s can't request more than S32_MAX freq\n", + node->name); + return -ERANGE; + } + + dev_pm_qos_update_request(&node_data->qos_req, freq); + + return 0; +} + +static int imx_icc_set(struct icc_node *src, struct icc_node *dst) +{ + int ret; + + ret = imx_icc_node_set(src); + if (ret) + return ret; + + return imx_icc_node_set(dst); +} + +/* imx_icc_node_destroy() - Destroy an imx icc_node, including private data */ +static void imx_icc_node_destroy(struct icc_node *node) +{ + struct imx_icc_node *node_data = node->data; + int ret; + + if (dev_pm_qos_request_active(&node_data->qos_req)) { + ret = dev_pm_qos_remove_request(&node_data->qos_req); + if (ret) + dev_warn(node->provider->dev, + "failed to remove qos request for %s\n", + dev_name(node_data->qos_dev)); + } + + put_device(node_data->qos_dev); + icc_node_del(node); + icc_node_destroy(node->id); +} + +static int imx_icc_node_init_qos(struct icc_provider *provider, + struct icc_node *node) +{ + struct imx_icc_node *node_data = node->data; + const struct imx_icc_node_adj_desc *adj = node_data->desc->adj; + struct device *dev = provider->dev; + struct device_node *dn = NULL; + struct platform_device *pdev; + + if (adj->main_noc) { + node_data->qos_dev = dev; + dev_dbg(dev, "icc node %s[%d] is main noc itself\n", + node->name, node->id); + } else { + dn = of_parse_phandle(dev->of_node, adj->phandle_name, 0); + if (!dn) { + dev_warn(dev, "Failed to parse %s\n", + adj->phandle_name); + return -ENODEV; + } + /* Allow scaling to be disabled on a per-node basis */ + if (!of_device_is_available(dn)) { + dev_warn(dev, "Missing property %s, skip scaling %s\n", + adj->phandle_name, node->name); + of_node_put(dn); + return 0; + } + + pdev = of_find_device_by_node(dn); + of_node_put(dn); + if (!pdev) { + dev_warn(dev, "node %s[%d] missing device for %pOF\n", + node->name, node->id, dn); + return -EPROBE_DEFER; + } + node_data->qos_dev = &pdev->dev; + dev_dbg(dev, "node %s[%d] has device node %pOF\n", + node->name, node->id, dn); + } + + return dev_pm_qos_add_request(node_data->qos_dev, + &node_data->qos_req, + DEV_PM_QOS_MIN_FREQUENCY, 0); +} + +static struct icc_node *imx_icc_node_add(struct imx_icc_provider *imx_provider, + const struct imx_icc_node_desc *node_desc, + const struct imx_icc_noc_setting *setting) +{ + struct icc_provider *provider = &imx_provider->provider; + struct device *dev = provider->dev; + struct imx_icc_node *node_data; + struct icc_node *node; + int ret; + + node = icc_node_create(node_desc->id); + if (IS_ERR(node)) { + dev_err(dev, "failed to create node %d\n", node_desc->id); + return node; + } + + if (node->data) { + dev_err(dev, "already created node %s id=%d\n", + node_desc->name, node_desc->id); + return ERR_PTR(-EEXIST); + } + + node_data = devm_kzalloc(dev, sizeof(*node_data), GFP_KERNEL); + if (!node_data) { + icc_node_destroy(node->id); + return ERR_PTR(-ENOMEM); + } + + node->name = node_desc->name; + node->data = node_data; + node_data->desc = node_desc; + node_data->setting = setting; + node_data->imx_provider = imx_provider; + icc_node_add(node, provider); + + if (node_desc->adj) { + ret = imx_icc_node_init_qos(provider, node); + if (ret < 0) { + imx_icc_node_destroy(node); + return ERR_PTR(ret); + } + } + + return node; +} + +static void imx_icc_unregister_nodes(struct icc_provider *provider) +{ + struct icc_node *node, *tmp; + + list_for_each_entry_safe(node, tmp, &provider->nodes, node_list) + imx_icc_node_destroy(node); +} + +static int imx_icc_register_nodes(struct imx_icc_provider *imx_provider, + const struct imx_icc_node_desc *descs, + int count, + const struct imx_icc_noc_setting *settings) +{ + struct icc_provider *provider = &imx_provider->provider; + struct icc_onecell_data *provider_data = provider->data; + int ret; + int i; + + for (i = 0; i < count; i++) { + struct icc_node *node; + const struct imx_icc_node_desc *node_desc = &descs[i]; + size_t j; + + node = imx_icc_node_add(imx_provider, node_desc, + settings ? &settings[node_desc->id] : NULL); + if (IS_ERR(node)) { + ret = dev_err_probe(provider->dev, PTR_ERR(node), + "failed to add %s\n", node_desc->name); + goto err; + } + provider_data->nodes[node->id] = node; + + for (j = 0; j < node_desc->num_links; j++) { + ret = icc_link_create(node, node_desc->links[j]); + if (ret) { + dev_err(provider->dev, "failed to link node %d to %d: %d\n", + node->id, node_desc->links[j], ret); + goto err; + } + } + } + + return 0; + +err: + imx_icc_unregister_nodes(provider); + + return ret; +} + +static int get_max_node_id(struct imx_icc_node_desc *nodes, int nodes_count) +{ + int i, ret = 0; + + for (i = 0; i < nodes_count; ++i) + if (nodes[i].id > ret) + ret = nodes[i].id; + + return ret; +} + +int imx_icc_register(struct platform_device *pdev, + struct imx_icc_node_desc *nodes, int nodes_count, + struct imx_icc_noc_setting *settings) +{ + struct device *dev = &pdev->dev; + struct icc_onecell_data *data; + struct imx_icc_provider *imx_provider; + struct icc_provider *provider; + int num_nodes; + int ret; + + /* icc_onecell_data is indexed by node_id, unlike nodes param */ + num_nodes = get_max_node_id(nodes, nodes_count) + 1; + data = devm_kzalloc(dev, struct_size(data, nodes, num_nodes), + GFP_KERNEL); + if (!data) + return -ENOMEM; + data->num_nodes = num_nodes; + + imx_provider = devm_kzalloc(dev, sizeof(*imx_provider), GFP_KERNEL); + if (!imx_provider) + return -ENOMEM; + provider = &imx_provider->provider; + provider->set = imx_icc_set; + provider->get_bw = imx_icc_get_bw; + provider->aggregate = icc_std_aggregate; + provider->xlate = of_icc_xlate_onecell; + provider->data = data; + provider->dev = dev->parent; + platform_set_drvdata(pdev, imx_provider); + + if (settings) { + imx_provider->noc_base = devm_of_iomap(dev, provider->dev->of_node, 0, NULL); + if (IS_ERR(imx_provider->noc_base)) { + ret = PTR_ERR(imx_provider->noc_base); + dev_err(dev, "Error mapping NoC: %d\n", ret); + return ret; + } + } + + ret = icc_provider_add(provider); + if (ret) { + dev_err(dev, "error adding interconnect provider: %d\n", ret); + return ret; + } + + ret = imx_icc_register_nodes(imx_provider, nodes, nodes_count, settings); + if (ret) + goto provider_del; + + return 0; + +provider_del: + icc_provider_del(provider); + return ret; +} +EXPORT_SYMBOL_GPL(imx_icc_register); + +void imx_icc_unregister(struct platform_device *pdev) +{ + struct imx_icc_provider *imx_provider = platform_get_drvdata(pdev); + + imx_icc_unregister_nodes(&imx_provider->provider); + + icc_provider_del(&imx_provider->provider); +} +EXPORT_SYMBOL_GPL(imx_icc_unregister); + +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3