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/sparc/kernel/irq_32.c | 363 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 363 insertions(+) create mode 100644 arch/sparc/kernel/irq_32.c (limited to 'arch/sparc/kernel/irq_32.c') diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c new file mode 100644 index 000000000..e8452be51 --- /dev/null +++ b/arch/sparc/kernel/irq_32.c @@ -0,0 +1,363 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Interrupt request handling routines. On the + * Sparc the IRQs are basically 'cast in stone' + * and you are supposed to probe the prom's device + * node trees to find out who's got which IRQ. + * + * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx) + * Copyright (C) 1995,2002 Pete A. Zaitcev (zaitcev@yahoo.com) + * Copyright (C) 1996 Dave Redman (djhr@tadpole.co.uk) + * Copyright (C) 1998-2000 Anton Blanchard (anton@samba.org) + */ + +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "kernel.h" +#include "irq.h" + +/* platform specific irq setup */ +struct sparc_config sparc_config; + +unsigned long arch_local_irq_save(void) +{ + unsigned long retval; + unsigned long tmp; + + __asm__ __volatile__( + "rd %%psr, %0\n\t" + "or %0, %2, %1\n\t" + "wr %1, 0, %%psr\n\t" + "nop; nop; nop\n" + : "=&r" (retval), "=r" (tmp) + : "i" (PSR_PIL) + : "memory"); + + return retval; +} +EXPORT_SYMBOL(arch_local_irq_save); + +void arch_local_irq_enable(void) +{ + unsigned long tmp; + + __asm__ __volatile__( + "rd %%psr, %0\n\t" + "andn %0, %1, %0\n\t" + "wr %0, 0, %%psr\n\t" + "nop; nop; nop\n" + : "=&r" (tmp) + : "i" (PSR_PIL) + : "memory"); +} +EXPORT_SYMBOL(arch_local_irq_enable); + +void arch_local_irq_restore(unsigned long old_psr) +{ + unsigned long tmp; + + __asm__ __volatile__( + "rd %%psr, %0\n\t" + "and %2, %1, %2\n\t" + "andn %0, %1, %0\n\t" + "wr %0, %2, %%psr\n\t" + "nop; nop; nop\n" + : "=&r" (tmp) + : "i" (PSR_PIL), "r" (old_psr) + : "memory"); +} +EXPORT_SYMBOL(arch_local_irq_restore); + +/* + * Dave Redman (djhr@tadpole.co.uk) + * + * IRQ numbers.. These are no longer restricted to 15.. + * + * this is done to enable SBUS cards and onboard IO to be masked + * correctly. using the interrupt level isn't good enough. + * + * For example: + * A device interrupting at sbus level6 and the Floppy both come in + * at IRQ11, but enabling and disabling them requires writing to + * different bits in the SLAVIO/SEC. + * + * As a result of these changes sun4m machines could now support + * directed CPU interrupts using the existing enable/disable irq code + * with tweaks. + * + * Sun4d complicates things even further. IRQ numbers are arbitrary + * 32-bit values in that case. Since this is similar to sparc64, + * we adopt a virtual IRQ numbering scheme as is done there. + * Virutal interrupt numbers are allocated by build_irq(). So NR_IRQS + * just becomes a limit of how many interrupt sources we can handle in + * a single system. Even fully loaded SS2000 machines top off at + * about 32 interrupt sources or so, therefore a NR_IRQS value of 64 + * is more than enough. + * + * We keep a map of per-PIL enable interrupts. These get wired + * up via the irq_chip->startup() method which gets invoked by + * the generic IRQ layer during request_irq(). + */ + + +/* Table of allocated irqs. Unused entries has irq == 0 */ +static struct irq_bucket irq_table[NR_IRQS]; +/* Protect access to irq_table */ +static DEFINE_SPINLOCK(irq_table_lock); + +/* Map between the irq identifier used in hw to the irq_bucket. */ +struct irq_bucket *irq_map[SUN4D_MAX_IRQ]; +/* Protect access to irq_map */ +static DEFINE_SPINLOCK(irq_map_lock); + +/* Allocate a new irq from the irq_table */ +unsigned int irq_alloc(unsigned int real_irq, unsigned int pil) +{ + unsigned long flags; + unsigned int i; + + spin_lock_irqsave(&irq_table_lock, flags); + for (i = 1; i < NR_IRQS; i++) { + if (irq_table[i].real_irq == real_irq && irq_table[i].pil == pil) + goto found; + } + + for (i = 1; i < NR_IRQS; i++) { + if (!irq_table[i].irq) + break; + } + + if (i < NR_IRQS) { + irq_table[i].real_irq = real_irq; + irq_table[i].irq = i; + irq_table[i].pil = pil; + } else { + printk(KERN_ERR "IRQ: Out of virtual IRQs.\n"); + i = 0; + } +found: + spin_unlock_irqrestore(&irq_table_lock, flags); + + return i; +} + +/* Based on a single pil handler_irq may need to call several + * interrupt handlers. Use irq_map as entry to irq_table, + * and let each entry in irq_table point to the next entry. + */ +void irq_link(unsigned int irq) +{ + struct irq_bucket *p; + unsigned long flags; + unsigned int pil; + + BUG_ON(irq >= NR_IRQS); + + spin_lock_irqsave(&irq_map_lock, flags); + + p = &irq_table[irq]; + pil = p->pil; + BUG_ON(pil >= SUN4D_MAX_IRQ); + p->next = irq_map[pil]; + irq_map[pil] = p; + + spin_unlock_irqrestore(&irq_map_lock, flags); +} + +void irq_unlink(unsigned int irq) +{ + struct irq_bucket *p, **pnext; + unsigned long flags; + + BUG_ON(irq >= NR_IRQS); + + spin_lock_irqsave(&irq_map_lock, flags); + + p = &irq_table[irq]; + BUG_ON(p->pil >= SUN4D_MAX_IRQ); + pnext = &irq_map[p->pil]; + while (*pnext != p) + pnext = &(*pnext)->next; + *pnext = p->next; + + spin_unlock_irqrestore(&irq_map_lock, flags); +} + + +/* /proc/interrupts printing */ +int arch_show_interrupts(struct seq_file *p, int prec) +{ + int j; + +#ifdef CONFIG_SMP + seq_printf(p, "RES: "); + for_each_online_cpu(j) + seq_printf(p, "%10u ", cpu_data(j).irq_resched_count); + seq_printf(p, " IPI rescheduling interrupts\n"); + seq_printf(p, "CAL: "); + for_each_online_cpu(j) + seq_printf(p, "%10u ", cpu_data(j).irq_call_count); + seq_printf(p, " IPI function call interrupts\n"); +#endif + seq_printf(p, "NMI: "); + for_each_online_cpu(j) + seq_printf(p, "%10u ", cpu_data(j).counter); + seq_printf(p, " Non-maskable interrupts\n"); + return 0; +} + +void handler_irq(unsigned int pil, struct pt_regs *regs) +{ + struct pt_regs *old_regs; + struct irq_bucket *p; + + BUG_ON(pil > 15); + old_regs = set_irq_regs(regs); + irq_enter(); + + p = irq_map[pil]; + while (p) { + struct irq_bucket *next = p->next; + + generic_handle_irq(p->irq); + p = next; + } + irq_exit(); + set_irq_regs(old_regs); +} + +#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE) +static unsigned int floppy_irq; + +int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler) +{ + unsigned int cpu_irq; + int err; + + + err = request_irq(irq, irq_handler, 0, "floppy", NULL); + if (err) + return -1; + + /* Save for later use in floppy interrupt handler */ + floppy_irq = irq; + + cpu_irq = (irq & (NR_IRQS - 1)); + + /* Dork with trap table if we get this far. */ +#define INSTANTIATE(table) \ + table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_one = SPARC_RD_PSR_L0; \ + table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_two = \ + SPARC_BRANCH((unsigned long) floppy_hardint, \ + (unsigned long) &table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_two);\ + table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_three = SPARC_RD_WIM_L3; \ + table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_four = SPARC_NOP; + + INSTANTIATE(sparc_ttable) + +#if defined CONFIG_SMP + if (sparc_cpu_model != sparc_leon) { + struct tt_entry *trap_table; + + trap_table = &trapbase_cpu1; + INSTANTIATE(trap_table) + trap_table = &trapbase_cpu2; + INSTANTIATE(trap_table) + trap_table = &trapbase_cpu3; + INSTANTIATE(trap_table) + } +#endif +#undef INSTANTIATE + /* + * XXX Correct thing whould be to flush only I- and D-cache lines + * which contain the handler in question. But as of time of the + * writing we have no CPU-neutral interface to fine-grained flushes. + */ + flush_cache_all(); + return 0; +} +EXPORT_SYMBOL(sparc_floppy_request_irq); + +/* + * These variables are used to access state from the assembler + * interrupt handler, floppy_hardint, so we cannot put these in + * the floppy driver image because that would not work in the + * modular case. + */ +volatile unsigned char *fdc_status; +EXPORT_SYMBOL(fdc_status); + +char *pdma_vaddr; +EXPORT_SYMBOL(pdma_vaddr); + +unsigned long pdma_size; +EXPORT_SYMBOL(pdma_size); + +volatile int doing_pdma; +EXPORT_SYMBOL(doing_pdma); + +char *pdma_base; +EXPORT_SYMBOL(pdma_base); + +unsigned long pdma_areasize; +EXPORT_SYMBOL(pdma_areasize); + +/* Use the generic irq support to call floppy_interrupt + * which was setup using request_irq() in sparc_floppy_request_irq(). + * We only have one floppy interrupt so we do not need to check + * for additional handlers being wired up by irq_link() + */ +void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs) +{ + struct pt_regs *old_regs; + + old_regs = set_irq_regs(regs); + irq_enter(); + generic_handle_irq(floppy_irq); + irq_exit(); + set_irq_regs(old_regs); +} +#endif + +/* djhr + * This could probably be made indirect too and assigned in the CPU + * bits of the code. That would be much nicer I think and would also + * fit in with the idea of being able to tune your kernel for your machine + * by removing unrequired machine and device support. + * + */ + +void __init init_IRQ(void) +{ + switch (sparc_cpu_model) { + case sun4m: + pcic_probe(); + if (pcic_present()) + sun4m_pci_init_IRQ(); + else + sun4m_init_IRQ(); + break; + + case sun4d: + sun4d_init_IRQ(); + break; + + case sparc_leon: + leon_init_IRQ(); + break; + + default: + prom_printf("Cannot initialize IRQs on this Sun machine..."); + break; + } +} + -- cgit v1.2.3