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/mm/c-octeon.c | 350 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 350 insertions(+) create mode 100644 arch/mips/mm/c-octeon.c (limited to 'arch/mips/mm/c-octeon.c') diff --git a/arch/mips/mm/c-octeon.c b/arch/mips/mm/c-octeon.c new file mode 100644 index 000000000..c7ed589de --- /dev/null +++ b/arch/mips/mm/c-octeon.c @@ -0,0 +1,350 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2005-2007 Cavium Networks + */ +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +unsigned long long cache_err_dcache[NR_CPUS]; +EXPORT_SYMBOL_GPL(cache_err_dcache); + +/* + * Octeon automatically flushes the dcache on tlb changes, so + * from Linux's viewpoint it acts much like a physically + * tagged cache. No flushing is needed + * + */ +static void octeon_flush_data_cache_page(unsigned long addr) +{ + /* Nothing to do */ +} + +static inline void octeon_local_flush_icache(void) +{ + asm volatile ("synci 0($0)"); +} + +/* + * Flush local I-cache for the specified range. + */ +static void local_octeon_flush_icache_range(unsigned long start, + unsigned long end) +{ + octeon_local_flush_icache(); +} + +/** + * octeon_flush_icache_all_cores - Flush caches as necessary for all cores + * affected by a vma. If no vma is supplied, all cores are flushed. + * + * @vma: VMA to flush or NULL to flush all icaches. + */ +static void octeon_flush_icache_all_cores(struct vm_area_struct *vma) +{ + extern void octeon_send_ipi_single(int cpu, unsigned int action); +#ifdef CONFIG_SMP + int cpu; + cpumask_t mask; +#endif + + mb(); + octeon_local_flush_icache(); +#ifdef CONFIG_SMP + preempt_disable(); + cpu = smp_processor_id(); + + /* + * If we have a vma structure, we only need to worry about + * cores it has been used on + */ + if (vma) + mask = *mm_cpumask(vma->vm_mm); + else + mask = *cpu_online_mask; + cpumask_clear_cpu(cpu, &mask); + for_each_cpu(cpu, &mask) + octeon_send_ipi_single(cpu, SMP_ICACHE_FLUSH); + + preempt_enable(); +#endif +} + + +/* + * Called to flush the icache on all cores + */ +static void octeon_flush_icache_all(void) +{ + octeon_flush_icache_all_cores(NULL); +} + + +/** + * octeon_flush_cache_mm - flush all memory associated with a memory context. + * + * @mm: Memory context to flush + */ +static void octeon_flush_cache_mm(struct mm_struct *mm) +{ + /* + * According to the R4K version of this file, CPUs without + * dcache aliases don't need to do anything here + */ +} + + +/* + * Flush a range of kernel addresses out of the icache + * + */ +static void octeon_flush_icache_range(unsigned long start, unsigned long end) +{ + octeon_flush_icache_all_cores(NULL); +} + + +/** + * octeon_flush_cache_range - Flush a range out of a vma + * + * @vma: VMA to flush + * @start: beginning address for flush + * @end: ending address for flush + */ +static void octeon_flush_cache_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end) +{ + if (vma->vm_flags & VM_EXEC) + octeon_flush_icache_all_cores(vma); +} + + +/** + * octeon_flush_cache_page - Flush a specific page of a vma + * + * @vma: VMA to flush page for + * @page: Page to flush + * @pfn: Page frame number + */ +static void octeon_flush_cache_page(struct vm_area_struct *vma, + unsigned long page, unsigned long pfn) +{ + if (vma->vm_flags & VM_EXEC) + octeon_flush_icache_all_cores(vma); +} + +static void octeon_flush_kernel_vmap_range(unsigned long vaddr, int size) +{ + BUG(); +} + +/* + * Probe Octeon's caches + * + */ +static void probe_octeon(void) +{ + unsigned long icache_size; + unsigned long dcache_size; + unsigned int config1; + struct cpuinfo_mips *c = ¤t_cpu_data; + int cputype = current_cpu_type(); + + config1 = read_c0_config1(); + switch (cputype) { + case CPU_CAVIUM_OCTEON: + case CPU_CAVIUM_OCTEON_PLUS: + c->icache.linesz = 2 << ((config1 >> 19) & 7); + c->icache.sets = 64 << ((config1 >> 22) & 7); + c->icache.ways = 1 + ((config1 >> 16) & 7); + c->icache.flags |= MIPS_CACHE_VTAG; + icache_size = + c->icache.sets * c->icache.ways * c->icache.linesz; + c->icache.waybit = ffs(icache_size / c->icache.ways) - 1; + c->dcache.linesz = 128; + if (cputype == CPU_CAVIUM_OCTEON_PLUS) + c->dcache.sets = 2; /* CN5XXX has two Dcache sets */ + else + c->dcache.sets = 1; /* CN3XXX has one Dcache set */ + c->dcache.ways = 64; + dcache_size = + c->dcache.sets * c->dcache.ways * c->dcache.linesz; + c->dcache.waybit = ffs(dcache_size / c->dcache.ways) - 1; + c->options |= MIPS_CPU_PREFETCH; + break; + + case CPU_CAVIUM_OCTEON2: + c->icache.linesz = 2 << ((config1 >> 19) & 7); + c->icache.sets = 8; + c->icache.ways = 37; + c->icache.flags |= MIPS_CACHE_VTAG; + icache_size = c->icache.sets * c->icache.ways * c->icache.linesz; + + c->dcache.linesz = 128; + c->dcache.ways = 32; + c->dcache.sets = 8; + dcache_size = c->dcache.sets * c->dcache.ways * c->dcache.linesz; + c->options |= MIPS_CPU_PREFETCH; + break; + + case CPU_CAVIUM_OCTEON3: + c->icache.linesz = 128; + c->icache.sets = 16; + c->icache.ways = 39; + c->icache.flags |= MIPS_CACHE_VTAG; + icache_size = c->icache.sets * c->icache.ways * c->icache.linesz; + + c->dcache.linesz = 128; + c->dcache.ways = 32; + c->dcache.sets = 8; + dcache_size = c->dcache.sets * c->dcache.ways * c->dcache.linesz; + c->options |= MIPS_CPU_PREFETCH; + break; + + default: + panic("Unsupported Cavium Networks CPU type"); + break; + } + + /* compute a couple of other cache variables */ + c->icache.waysize = icache_size / c->icache.ways; + c->dcache.waysize = dcache_size / c->dcache.ways; + + c->icache.sets = icache_size / (c->icache.linesz * c->icache.ways); + c->dcache.sets = dcache_size / (c->dcache.linesz * c->dcache.ways); + + if (smp_processor_id() == 0) { + pr_info("Primary instruction cache %ldkB, %s, %d way, " + "%d sets, linesize %d bytes.\n", + icache_size >> 10, + cpu_has_vtag_icache ? + "virtually tagged" : "physically tagged", + c->icache.ways, c->icache.sets, c->icache.linesz); + + pr_info("Primary data cache %ldkB, %d-way, %d sets, " + "linesize %d bytes.\n", + dcache_size >> 10, c->dcache.ways, + c->dcache.sets, c->dcache.linesz); + } +} + +static void octeon_cache_error_setup(void) +{ + extern char except_vec2_octeon; + set_handler(0x100, &except_vec2_octeon, 0x80); +} + +/* + * Setup the Octeon cache flush routines + * + */ +void octeon_cache_init(void) +{ + probe_octeon(); + + shm_align_mask = PAGE_SIZE - 1; + + flush_cache_all = octeon_flush_icache_all; + __flush_cache_all = octeon_flush_icache_all; + flush_cache_mm = octeon_flush_cache_mm; + flush_cache_page = octeon_flush_cache_page; + flush_cache_range = octeon_flush_cache_range; + flush_icache_all = octeon_flush_icache_all; + flush_data_cache_page = octeon_flush_data_cache_page; + flush_icache_range = octeon_flush_icache_range; + local_flush_icache_range = local_octeon_flush_icache_range; + __flush_icache_user_range = octeon_flush_icache_range; + __local_flush_icache_user_range = local_octeon_flush_icache_range; + + __flush_kernel_vmap_range = octeon_flush_kernel_vmap_range; + + build_clear_page(); + build_copy_page(); + + board_cache_error_setup = octeon_cache_error_setup; +} + +/* + * Handle a cache error exception + */ +static RAW_NOTIFIER_HEAD(co_cache_error_chain); + +int register_co_cache_error_notifier(struct notifier_block *nb) +{ + return raw_notifier_chain_register(&co_cache_error_chain, nb); +} +EXPORT_SYMBOL_GPL(register_co_cache_error_notifier); + +int unregister_co_cache_error_notifier(struct notifier_block *nb) +{ + return raw_notifier_chain_unregister(&co_cache_error_chain, nb); +} +EXPORT_SYMBOL_GPL(unregister_co_cache_error_notifier); + +static void co_cache_error_call_notifiers(unsigned long val) +{ + int rv = raw_notifier_call_chain(&co_cache_error_chain, val, NULL); + if ((rv & ~NOTIFY_STOP_MASK) != NOTIFY_OK) { + u64 dcache_err; + unsigned long coreid = cvmx_get_core_num(); + u64 icache_err = read_octeon_c0_icacheerr(); + + if (val) { + dcache_err = cache_err_dcache[coreid]; + cache_err_dcache[coreid] = 0; + } else { + dcache_err = read_octeon_c0_dcacheerr(); + } + + pr_err("Core%lu: Cache error exception:\n", coreid); + pr_err("cp0_errorepc == %lx\n", read_c0_errorepc()); + if (icache_err & 1) { + pr_err("CacheErr (Icache) == %llx\n", + (unsigned long long)icache_err); + write_octeon_c0_icacheerr(0); + } + if (dcache_err & 1) { + pr_err("CacheErr (Dcache) == %llx\n", + (unsigned long long)dcache_err); + } + } +} + +/* + * Called when the exception is recoverable + */ + +asmlinkage void cache_parity_error_octeon_recoverable(void) +{ + co_cache_error_call_notifiers(0); +} + +/* + * Called when the exception is not recoverable + */ + +asmlinkage void cache_parity_error_octeon_non_recoverable(void) +{ + co_cache_error_call_notifiers(1); + panic("Can't handle cache error: nested exception"); +} -- cgit v1.2.3