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/irqchip/irq-atmel-aic-common.c | 275 +++++++++++++++++++++++++++++++++ 1 file changed, 275 insertions(+) create mode 100644 drivers/irqchip/irq-atmel-aic-common.c (limited to 'drivers/irqchip/irq-atmel-aic-common.c') diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c new file mode 100644 index 000000000..072bd227b --- /dev/null +++ b/drivers/irqchip/irq-atmel-aic-common.c @@ -0,0 +1,275 @@ +/* + * Atmel AT91 common AIC (Advanced Interrupt Controller) code shared by + * irq-atmel-aic and irq-atmel-aic5 drivers + * + * Copyright (C) 2004 SAN People + * Copyright (C) 2004 ATMEL + * Copyright (C) Rick Bronson + * Copyright (C) 2014 Free Electrons + * + * Author: Boris BREZILLON + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "irq-atmel-aic-common.h" + +#define AT91_AIC_PRIOR GENMASK(2, 0) +#define AT91_AIC_IRQ_MIN_PRIORITY 0 +#define AT91_AIC_IRQ_MAX_PRIORITY 7 + +#define AT91_AIC_SRCTYPE GENMASK(6, 5) +#define AT91_AIC_SRCTYPE_LOW (0 << 5) +#define AT91_AIC_SRCTYPE_FALLING (1 << 5) +#define AT91_AIC_SRCTYPE_HIGH (2 << 5) +#define AT91_AIC_SRCTYPE_RISING (3 << 5) + +struct aic_chip_data { + u32 ext_irqs; +}; + +static void aic_common_shutdown(struct irq_data *d) +{ + struct irq_chip_type *ct = irq_data_get_chip_type(d); + + ct->chip.irq_mask(d); +} + +int aic_common_set_type(struct irq_data *d, unsigned type, unsigned *val) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct aic_chip_data *aic = gc->private; + unsigned aic_type; + + switch (type) { + case IRQ_TYPE_LEVEL_HIGH: + aic_type = AT91_AIC_SRCTYPE_HIGH; + break; + case IRQ_TYPE_EDGE_RISING: + aic_type = AT91_AIC_SRCTYPE_RISING; + break; + case IRQ_TYPE_LEVEL_LOW: + if (!(d->mask & aic->ext_irqs)) + return -EINVAL; + + aic_type = AT91_AIC_SRCTYPE_LOW; + break; + case IRQ_TYPE_EDGE_FALLING: + if (!(d->mask & aic->ext_irqs)) + return -EINVAL; + + aic_type = AT91_AIC_SRCTYPE_FALLING; + break; + default: + return -EINVAL; + } + + *val &= ~AT91_AIC_SRCTYPE; + *val |= aic_type; + + return 0; +} + +void aic_common_set_priority(int priority, unsigned *val) +{ + *val &= ~AT91_AIC_PRIOR; + *val |= priority; +} + +int aic_common_irq_domain_xlate(struct irq_domain *d, + struct device_node *ctrlr, + const u32 *intspec, + unsigned int intsize, + irq_hw_number_t *out_hwirq, + unsigned int *out_type) +{ + if (WARN_ON(intsize < 3)) + return -EINVAL; + + if (WARN_ON((intspec[2] < AT91_AIC_IRQ_MIN_PRIORITY) || + (intspec[2] > AT91_AIC_IRQ_MAX_PRIORITY))) + return -EINVAL; + + *out_hwirq = intspec[0]; + *out_type = intspec[1] & IRQ_TYPE_SENSE_MASK; + + return 0; +} + +static void __init aic_common_ext_irq_of_init(struct irq_domain *domain) +{ + struct device_node *node = irq_domain_get_of_node(domain); + struct irq_chip_generic *gc; + struct aic_chip_data *aic; + struct property *prop; + const __be32 *p; + u32 hwirq; + + gc = irq_get_domain_generic_chip(domain, 0); + + aic = gc->private; + aic->ext_irqs |= 1; + + of_property_for_each_u32(node, "atmel,external-irqs", prop, p, hwirq) { + gc = irq_get_domain_generic_chip(domain, hwirq); + if (!gc) { + pr_warn("AIC: external irq %d >= %d skip it\n", + hwirq, domain->revmap_size); + continue; + } + + aic = gc->private; + aic->ext_irqs |= (1 << (hwirq % 32)); + } +} + +#define AT91_RTC_IDR 0x24 +#define AT91_RTC_IMR 0x28 +#define AT91_RTC_IRQ_MASK 0x1f + +void __init aic_common_rtc_irq_fixup(void) +{ + struct device_node *np; + void __iomem *regs; + + np = of_find_compatible_node(NULL, NULL, "atmel,at91rm9200-rtc"); + if (!np) + np = of_find_compatible_node(NULL, NULL, + "atmel,at91sam9x5-rtc"); + + if (!np) + return; + + regs = of_iomap(np, 0); + of_node_put(np); + + if (!regs) + return; + + writel(AT91_RTC_IRQ_MASK, regs + AT91_RTC_IDR); + + iounmap(regs); +} + +#define AT91_RTT_MR 0x00 /* Real-time Mode Register */ +#define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */ +#define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */ + +void __init aic_common_rtt_irq_fixup(void) +{ + struct device_node *np; + void __iomem *regs; + + /* + * The at91sam9263 SoC has 2 instances of the RTT block, hence we + * iterate over the DT to find each occurrence. + */ + for_each_compatible_node(np, NULL, "atmel,at91sam9260-rtt") { + regs = of_iomap(np, 0); + if (!regs) + continue; + + writel(readl(regs + AT91_RTT_MR) & + ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN), + regs + AT91_RTT_MR); + + iounmap(regs); + } +} + +static void __init aic_common_irq_fixup(const struct of_device_id *matches) +{ + struct device_node *root = of_find_node_by_path("/"); + const struct of_device_id *match; + + if (!root) + return; + + match = of_match_node(matches, root); + + if (match) { + void (*fixup)(void) = match->data; + fixup(); + } + + of_node_put(root); +} + +struct irq_domain *__init aic_common_of_init(struct device_node *node, + const struct irq_domain_ops *ops, + const char *name, int nirqs, + const struct of_device_id *matches) +{ + struct irq_chip_generic *gc; + struct irq_domain *domain; + struct aic_chip_data *aic; + void __iomem *reg_base; + int nchips; + int ret; + int i; + + nchips = DIV_ROUND_UP(nirqs, 32); + + reg_base = of_iomap(node, 0); + if (!reg_base) + return ERR_PTR(-ENOMEM); + + aic = kcalloc(nchips, sizeof(*aic), GFP_KERNEL); + if (!aic) { + ret = -ENOMEM; + goto err_iounmap; + } + + domain = irq_domain_add_linear(node, nchips * 32, ops, aic); + if (!domain) { + ret = -ENOMEM; + goto err_free_aic; + } + + ret = irq_alloc_domain_generic_chips(domain, 32, 1, name, + handle_fasteoi_irq, + IRQ_NOREQUEST | IRQ_NOPROBE | + IRQ_NOAUTOEN, 0, 0); + if (ret) + goto err_domain_remove; + + for (i = 0; i < nchips; i++) { + gc = irq_get_domain_generic_chip(domain, i * 32); + + gc->reg_base = reg_base; + + gc->unused = 0; + gc->wake_enabled = ~0; + gc->chip_types[0].type = IRQ_TYPE_SENSE_MASK; + gc->chip_types[0].chip.irq_eoi = irq_gc_eoi; + gc->chip_types[0].chip.irq_set_wake = irq_gc_set_wake; + gc->chip_types[0].chip.irq_shutdown = aic_common_shutdown; + gc->private = &aic[i]; + } + + aic_common_ext_irq_of_init(domain); + aic_common_irq_fixup(matches); + + return domain; + +err_domain_remove: + irq_domain_remove(domain); + +err_free_aic: + kfree(aic); + +err_iounmap: + iounmap(reg_base); + + return ERR_PTR(ret); +} -- cgit v1.2.3