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(). ... --- arch/mips/pci/pci-legacy.c | 307 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 307 insertions(+) create mode 100644 arch/mips/pci/pci-legacy.c (limited to 'arch/mips/pci/pci-legacy.c') diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c new file mode 100644 index 000000000..468722c8a --- /dev/null +++ b/arch/mips/pci/pci-legacy.c @@ -0,0 +1,307 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * + * Copyright (C) 2003, 04, 11 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2011 Wind River Systems, + * written by Ralf Baechle (ralf@linux-mips.org) + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +/* + * If PCI_PROBE_ONLY in pci_flags is set, we don't change any PCI resource + * assignments. + */ + +/* + * The PCI controller list. + */ +static LIST_HEAD(controllers); + +static int pci_initialized; + +/* + * We need to avoid collisions with `mirrored' VGA ports + * and other strange ISA hardware, so we always want the + * addresses to be allocated in the 0x000-0x0ff region + * modulo 0x400. + * + * Why? Because some silly external IO cards only decode + * the low 10 bits of the IO address. The 0x00-0xff region + * is reserved for motherboard devices that decode all 16 + * bits, so it's ok to allocate at, say, 0x2800-0x28ff, + * but we want to try to avoid allocating at 0x2900-0x2bff + * which might have be mirrored at 0x0100-0x03ff.. + */ +resource_size_t +pcibios_align_resource(void *data, const struct resource *res, + resource_size_t size, resource_size_t align) +{ + struct pci_dev *dev = data; + struct pci_controller *hose = dev->sysdata; + resource_size_t start = res->start; + + if (res->flags & IORESOURCE_IO) { + /* Make sure we start at our min on all hoses */ + if (start < PCIBIOS_MIN_IO + hose->io_resource->start) + start = PCIBIOS_MIN_IO + hose->io_resource->start; + + /* + * Put everything into 0x00-0xff region modulo 0x400 + */ + if (start & 0x300) + start = (start + 0x3ff) & ~0x3ff; + } else if (res->flags & IORESOURCE_MEM) { + /* Make sure we start at our min on all hoses */ + if (start < PCIBIOS_MIN_MEM + hose->mem_resource->start) + start = PCIBIOS_MIN_MEM + hose->mem_resource->start; + } + + return start; +} + +static void pcibios_scanbus(struct pci_controller *hose) +{ + static int next_busno; + static int need_domain_info; + LIST_HEAD(resources); + struct pci_bus *bus; + struct pci_host_bridge *bridge; + int ret; + + bridge = pci_alloc_host_bridge(0); + if (!bridge) + return; + + if (hose->get_busno && pci_has_flag(PCI_PROBE_ONLY)) + next_busno = (*hose->get_busno)(); + + pci_add_resource_offset(&resources, + hose->mem_resource, hose->mem_offset); + pci_add_resource_offset(&resources, + hose->io_resource, hose->io_offset); + list_splice_init(&resources, &bridge->windows); + bridge->dev.parent = NULL; + bridge->sysdata = hose; + bridge->busnr = next_busno; + bridge->ops = hose->pci_ops; + bridge->swizzle_irq = pci_common_swizzle; + bridge->map_irq = pcibios_map_irq; + ret = pci_scan_root_bus_bridge(bridge); + if (ret) { + pci_free_host_bridge(bridge); + return; + } + + hose->bus = bus = bridge->bus; + + need_domain_info = need_domain_info || pci_domain_nr(bus); + set_pci_need_domain_info(hose, need_domain_info); + + next_busno = bus->busn_res.end + 1; + /* Don't allow 8-bit bus number overflow inside the hose - + reserve some space for bridges. */ + if (next_busno > 224) { + next_busno = 0; + need_domain_info = 1; + } + + /* + * We insert PCI resources into the iomem_resource and + * ioport_resource trees in either pci_bus_claim_resources() + * or pci_bus_assign_resources(). + */ + if (pci_has_flag(PCI_PROBE_ONLY)) { + pci_bus_claim_resources(bus); + } else { + struct pci_bus *child; + + pci_bus_size_bridges(bus); + pci_bus_assign_resources(bus); + list_for_each_entry(child, &bus->children, node) + pcie_bus_configure_settings(child); + } + pci_bus_add_devices(bus); +} + +#ifdef CONFIG_OF +void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node) +{ + struct of_pci_range range; + struct of_pci_range_parser parser; + + hose->of_node = node; + + if (of_pci_range_parser_init(&parser, node)) + return; + + for_each_of_pci_range(&parser, &range) { + struct resource *res = NULL; + + switch (range.flags & IORESOURCE_TYPE_BITS) { + case IORESOURCE_IO: + hose->io_map_base = + (unsigned long)ioremap(range.cpu_addr, + range.size); + res = hose->io_resource; + break; + case IORESOURCE_MEM: + res = hose->mem_resource; + break; + } + if (res != NULL) { + res->name = node->full_name; + res->flags = range.flags; + res->start = range.cpu_addr; + res->end = range.cpu_addr + range.size - 1; + res->parent = res->child = res->sibling = NULL; + } + } +} + +struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) +{ + struct pci_controller *hose = bus->sysdata; + + return of_node_get(hose->of_node); +} +#endif + +static DEFINE_MUTEX(pci_scan_mutex); + +void register_pci_controller(struct pci_controller *hose) +{ + struct resource *parent; + + parent = hose->mem_resource->parent; + if (!parent) + parent = &iomem_resource; + + if (request_resource(parent, hose->mem_resource) < 0) + goto out; + + parent = hose->io_resource->parent; + if (!parent) + parent = &ioport_resource; + + if (request_resource(parent, hose->io_resource) < 0) { + release_resource(hose->mem_resource); + goto out; + } + + INIT_LIST_HEAD(&hose->list); + list_add_tail(&hose->list, &controllers); + + /* + * Do not panic here but later - this might happen before console init. + */ + if (!hose->io_map_base) { + printk(KERN_WARNING + "registering PCI controller with io_map_base unset\n"); + } + + /* + * Scan the bus if it is register after the PCI subsystem + * initialization. + */ + if (pci_initialized) { + mutex_lock(&pci_scan_mutex); + pcibios_scanbus(hose); + mutex_unlock(&pci_scan_mutex); + } + + return; + +out: + printk(KERN_WARNING + "Skipping PCI bus scan due to resource conflict\n"); +} + +static int __init pcibios_init(void) +{ + struct pci_controller *hose; + + /* Scan all of the recorded PCI controllers. */ + list_for_each_entry(hose, &controllers, list) + pcibios_scanbus(hose); + + pci_initialized = 1; + + return 0; +} + +subsys_initcall(pcibios_init); + +static int pcibios_enable_resources(struct pci_dev *dev, int mask) +{ + u16 cmd, old_cmd; + int idx; + struct resource *r; + + pci_read_config_word(dev, PCI_COMMAND, &cmd); + old_cmd = cmd; + for (idx = 0; idx < PCI_NUM_RESOURCES; idx++) { + /* Only set up the requested stuff */ + if (!(mask & (1<resource[idx]; + if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) + continue; + if ((idx == PCI_ROM_RESOURCE) && + (!(r->flags & IORESOURCE_ROM_ENABLE))) + continue; + if (!r->start && r->end) { + pci_err(dev, + "can't enable device: resource collisions\n"); + return -EINVAL; + } + if (r->flags & IORESOURCE_IO) + cmd |= PCI_COMMAND_IO; + if (r->flags & IORESOURCE_MEM) + cmd |= PCI_COMMAND_MEMORY; + } + if (cmd != old_cmd) { + pci_info(dev, "enabling device (%04x -> %04x)\n", old_cmd, cmd); + pci_write_config_word(dev, PCI_COMMAND, cmd); + } + return 0; +} + +int pcibios_enable_device(struct pci_dev *dev, int mask) +{ + int err = pcibios_enable_resources(dev, mask); + + if (err < 0) + return err; + + return pcibios_plat_dev_init(dev); +} + +void pcibios_fixup_bus(struct pci_bus *bus) +{ + struct pci_dev *dev = bus->self; + + if (pci_has_flag(PCI_PROBE_ONLY) && dev && + (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { + pci_read_bridge_bases(bus); + } +} + +char * (*pcibios_plat_setup)(char *str) __initdata; + +char *__init pcibios_setup(char *str) +{ + if (pcibios_plat_setup) + return pcibios_plat_setup(str); + return str; +} -- cgit v1.2.3