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/powerpc/platforms/512x/mpc5121_ads_cpld.c | 198 +++++++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 arch/powerpc/platforms/512x/mpc5121_ads_cpld.c (limited to 'arch/powerpc/platforms/512x/mpc5121_ads_cpld.c') diff --git a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c new file mode 100644 index 000000000..6f08d07ae --- /dev/null +++ b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c @@ -0,0 +1,198 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2008 Freescale Semiconductor, Inc. All rights reserved. + * + * Author: John Rigby, + * + * Description: + * MPC5121ADS CPLD irq handling + */ + +#undef DEBUG + +#include +#include +#include +#include +#include +#include + +static struct device_node *cpld_pic_node; +static struct irq_domain *cpld_pic_host; + +/* + * Bits to ignore in the misc_status register + * 0x10 touch screen pendown is hard routed to irq1 + * 0x02 pci status is read from pci status register + */ +#define MISC_IGNORE 0x12 + +/* + * Nothing to ignore in pci status register + */ +#define PCI_IGNORE 0x00 + +struct cpld_pic { + u8 pci_mask; + u8 pci_status; + u8 route; + u8 misc_mask; + u8 misc_status; + u8 misc_control; +}; + +static struct cpld_pic __iomem *cpld_regs; + +static void __iomem * +irq_to_pic_mask(unsigned int irq) +{ + return irq <= 7 ? &cpld_regs->pci_mask : &cpld_regs->misc_mask; +} + +static unsigned int +irq_to_pic_bit(unsigned int irq) +{ + return 1 << (irq & 0x7); +} + +static void +cpld_mask_irq(struct irq_data *d) +{ + unsigned int cpld_irq = (unsigned int)irqd_to_hwirq(d); + void __iomem *pic_mask = irq_to_pic_mask(cpld_irq); + + out_8(pic_mask, + in_8(pic_mask) | irq_to_pic_bit(cpld_irq)); +} + +static void +cpld_unmask_irq(struct irq_data *d) +{ + unsigned int cpld_irq = (unsigned int)irqd_to_hwirq(d); + void __iomem *pic_mask = irq_to_pic_mask(cpld_irq); + + out_8(pic_mask, + in_8(pic_mask) & ~irq_to_pic_bit(cpld_irq)); +} + +static struct irq_chip cpld_pic = { + .name = "CPLD PIC", + .irq_mask = cpld_mask_irq, + .irq_ack = cpld_mask_irq, + .irq_unmask = cpld_unmask_irq, +}; + +static unsigned int +cpld_pic_get_irq(int offset, u8 ignore, u8 __iomem *statusp, + u8 __iomem *maskp) +{ + u8 status = in_8(statusp); + u8 mask = in_8(maskp); + + /* ignore don't cares and masked irqs */ + status |= (ignore | mask); + + if (status == 0xff) + return ~0; + + return ffz(status) + offset; +} + +static void cpld_pic_cascade(struct irq_desc *desc) +{ + unsigned int hwirq; + + hwirq = cpld_pic_get_irq(0, PCI_IGNORE, &cpld_regs->pci_status, + &cpld_regs->pci_mask); + if (hwirq != ~0) { + generic_handle_domain_irq(cpld_pic_host, hwirq); + return; + } + + hwirq = cpld_pic_get_irq(8, MISC_IGNORE, &cpld_regs->misc_status, + &cpld_regs->misc_mask); + if (hwirq != ~0) { + generic_handle_domain_irq(cpld_pic_host, hwirq); + return; + } +} + +static int +cpld_pic_host_match(struct irq_domain *h, struct device_node *node, + enum irq_domain_bus_token bus_token) +{ + return cpld_pic_node == node; +} + +static int +cpld_pic_host_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + irq_set_status_flags(virq, IRQ_LEVEL); + irq_set_chip_and_handler(virq, &cpld_pic, handle_level_irq); + return 0; +} + +static const struct irq_domain_ops cpld_pic_host_ops = { + .match = cpld_pic_host_match, + .map = cpld_pic_host_map, +}; + +void __init +mpc5121_ads_cpld_map(void) +{ + struct device_node *np = NULL; + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121ads-cpld-pic"); + if (!np) { + printk(KERN_ERR "CPLD PIC init: can not find cpld-pic node\n"); + return; + } + + cpld_regs = of_iomap(np, 0); + of_node_put(np); +} + +void __init +mpc5121_ads_cpld_pic_init(void) +{ + unsigned int cascade_irq; + struct device_node *np = NULL; + + pr_debug("cpld_ic_init\n"); + + np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121ads-cpld-pic"); + if (!np) { + printk(KERN_ERR "CPLD PIC init: can not find cpld-pic node\n"); + return; + } + + if (!cpld_regs) + goto end; + + cascade_irq = irq_of_parse_and_map(np, 0); + if (!cascade_irq) + goto end; + + /* + * statically route touch screen pendown through 1 + * and ignore it here + * route all others through our cascade irq + */ + out_8(&cpld_regs->route, 0xfd); + out_8(&cpld_regs->pci_mask, 0xff); + /* unmask pci ints in misc mask */ + out_8(&cpld_regs->misc_mask, ~(MISC_IGNORE)); + + cpld_pic_node = of_node_get(np); + + cpld_pic_host = irq_domain_add_linear(np, 16, &cpld_pic_host_ops, NULL); + if (!cpld_pic_host) { + printk(KERN_ERR "CPLD PIC: failed to allocate irq host!\n"); + goto end; + } + + irq_set_chained_handler(cascade_irq, cpld_pic_cascade); +end: + of_node_put(np); +} -- cgit v1.2.3