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/cell/spider-pic.c | 344 +++++++++++++++++++++++++++++++ 1 file changed, 344 insertions(+) create mode 100644 arch/powerpc/platforms/cell/spider-pic.c (limited to 'arch/powerpc/platforms/cell/spider-pic.c') diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c new file mode 100644 index 000000000..11df737c8 --- /dev/null +++ b/arch/powerpc/platforms/cell/spider-pic.c @@ -0,0 +1,344 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * External Interrupt Controller on Spider South Bridge + * + * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 + * + * Author: Arnd Bergmann + */ + +#include +#include +#include +#include +#include +#include + +#include + +#include "interrupt.h" + +/* register layout taken from Spider spec, table 7.4-4 */ +enum { + TIR_DEN = 0x004, /* Detection Enable Register */ + TIR_MSK = 0x084, /* Mask Level Register */ + TIR_EDC = 0x0c0, /* Edge Detection Clear Register */ + TIR_PNDA = 0x100, /* Pending Register A */ + TIR_PNDB = 0x104, /* Pending Register B */ + TIR_CS = 0x144, /* Current Status Register */ + TIR_LCSA = 0x150, /* Level Current Status Register A */ + TIR_LCSB = 0x154, /* Level Current Status Register B */ + TIR_LCSC = 0x158, /* Level Current Status Register C */ + TIR_LCSD = 0x15c, /* Level Current Status Register D */ + TIR_CFGA = 0x200, /* Setting Register A0 */ + TIR_CFGB = 0x204, /* Setting Register B0 */ + /* 0x208 ... 0x3ff Setting Register An/Bn */ + TIR_PPNDA = 0x400, /* Packet Pending Register A */ + TIR_PPNDB = 0x404, /* Packet Pending Register B */ + TIR_PIERA = 0x408, /* Packet Output Error Register A */ + TIR_PIERB = 0x40c, /* Packet Output Error Register B */ + TIR_PIEN = 0x444, /* Packet Output Enable Register */ + TIR_PIPND = 0x454, /* Packet Output Pending Register */ + TIRDID = 0x484, /* Spider Device ID Register */ + REISTIM = 0x500, /* Reissue Command Timeout Time Setting */ + REISTIMEN = 0x504, /* Reissue Command Timeout Setting */ + REISWAITEN = 0x508, /* Reissue Wait Control*/ +}; + +#define SPIDER_CHIP_COUNT 4 +#define SPIDER_SRC_COUNT 64 +#define SPIDER_IRQ_INVALID 63 + +struct spider_pic { + struct irq_domain *host; + void __iomem *regs; + unsigned int node_id; +}; +static struct spider_pic spider_pics[SPIDER_CHIP_COUNT]; + +static struct spider_pic *spider_irq_data_to_pic(struct irq_data *d) +{ + return irq_data_get_irq_chip_data(d); +} + +static void __iomem *spider_get_irq_config(struct spider_pic *pic, + unsigned int src) +{ + return pic->regs + TIR_CFGA + 8 * src; +} + +static void spider_unmask_irq(struct irq_data *d) +{ + struct spider_pic *pic = spider_irq_data_to_pic(d); + void __iomem *cfg = spider_get_irq_config(pic, irqd_to_hwirq(d)); + + out_be32(cfg, in_be32(cfg) | 0x30000000u); +} + +static void spider_mask_irq(struct irq_data *d) +{ + struct spider_pic *pic = spider_irq_data_to_pic(d); + void __iomem *cfg = spider_get_irq_config(pic, irqd_to_hwirq(d)); + + out_be32(cfg, in_be32(cfg) & ~0x30000000u); +} + +static void spider_ack_irq(struct irq_data *d) +{ + struct spider_pic *pic = spider_irq_data_to_pic(d); + unsigned int src = irqd_to_hwirq(d); + + /* Reset edge detection logic if necessary + */ + if (irqd_is_level_type(d)) + return; + + /* Only interrupts 47 to 50 can be set to edge */ + if (src < 47 || src > 50) + return; + + /* Perform the clear of the edge logic */ + out_be32(pic->regs + TIR_EDC, 0x100 | (src & 0xf)); +} + +static int spider_set_irq_type(struct irq_data *d, unsigned int type) +{ + unsigned int sense = type & IRQ_TYPE_SENSE_MASK; + struct spider_pic *pic = spider_irq_data_to_pic(d); + unsigned int hw = irqd_to_hwirq(d); + void __iomem *cfg = spider_get_irq_config(pic, hw); + u32 old_mask; + u32 ic; + + /* Note that only level high is supported for most interrupts */ + if (sense != IRQ_TYPE_NONE && sense != IRQ_TYPE_LEVEL_HIGH && + (hw < 47 || hw > 50)) + return -EINVAL; + + /* Decode sense type */ + switch(sense) { + case IRQ_TYPE_EDGE_RISING: + ic = 0x3; + break; + case IRQ_TYPE_EDGE_FALLING: + ic = 0x2; + break; + case IRQ_TYPE_LEVEL_LOW: + ic = 0x0; + break; + case IRQ_TYPE_LEVEL_HIGH: + case IRQ_TYPE_NONE: + ic = 0x1; + break; + default: + return -EINVAL; + } + + /* Configure the source. One gross hack that was there before and + * that I've kept around is the priority to the BE which I set to + * be the same as the interrupt source number. I don't know whether + * that's supposed to make any kind of sense however, we'll have to + * decide that, but for now, I'm not changing the behaviour. + */ + old_mask = in_be32(cfg) & 0x30000000u; + out_be32(cfg, old_mask | (ic << 24) | (0x7 << 16) | + (pic->node_id << 4) | 0xe); + out_be32(cfg + 4, (0x2 << 16) | (hw & 0xff)); + + return 0; +} + +static struct irq_chip spider_pic = { + .name = "SPIDER", + .irq_unmask = spider_unmask_irq, + .irq_mask = spider_mask_irq, + .irq_ack = spider_ack_irq, + .irq_set_type = spider_set_irq_type, +}; + +static int spider_host_map(struct irq_domain *h, unsigned int virq, + irq_hw_number_t hw) +{ + irq_set_chip_data(virq, h->host_data); + irq_set_chip_and_handler(virq, &spider_pic, handle_level_irq); + + /* Set default irq type */ + irq_set_irq_type(virq, IRQ_TYPE_NONE); + + return 0; +} + +static int spider_host_xlate(struct irq_domain *h, struct device_node *ct, + const u32 *intspec, unsigned int intsize, + irq_hw_number_t *out_hwirq, unsigned int *out_flags) + +{ + /* Spider interrupts have 2 cells, first is the interrupt source, + * second, well, I don't know for sure yet ... We mask the top bits + * because old device-trees encode a node number in there + */ + *out_hwirq = intspec[0] & 0x3f; + *out_flags = IRQ_TYPE_LEVEL_HIGH; + return 0; +} + +static const struct irq_domain_ops spider_host_ops = { + .map = spider_host_map, + .xlate = spider_host_xlate, +}; + +static void spider_irq_cascade(struct irq_desc *desc) +{ + struct irq_chip *chip = irq_desc_get_chip(desc); + struct spider_pic *pic = irq_desc_get_handler_data(desc); + unsigned int cs; + + cs = in_be32(pic->regs + TIR_CS) >> 24; + if (cs != SPIDER_IRQ_INVALID) + generic_handle_domain_irq(pic->host, cs); + + chip->irq_eoi(&desc->irq_data); +} + +/* For hooking up the cascade we have a problem. Our device-tree is + * crap and we don't know on which BE iic interrupt we are hooked on at + * least not the "standard" way. We can reconstitute it based on two + * informations though: which BE node we are connected to and whether + * we are connected to IOIF0 or IOIF1. Right now, we really only care + * about the IBM cell blade and we know that its firmware gives us an + * interrupt-map property which is pretty strange. + */ +static unsigned int __init spider_find_cascade_and_node(struct spider_pic *pic) +{ + unsigned int virq; + const u32 *imap, *tmp; + int imaplen, intsize, unit; + struct device_node *iic; + struct device_node *of_node; + + of_node = irq_domain_get_of_node(pic->host); + + /* First, we check whether we have a real "interrupts" in the device + * tree in case the device-tree is ever fixed + */ + virq = irq_of_parse_and_map(of_node, 0); + if (virq) + return virq; + + /* Now do the horrible hacks */ + tmp = of_get_property(of_node, "#interrupt-cells", NULL); + if (tmp == NULL) + return 0; + intsize = *tmp; + imap = of_get_property(of_node, "interrupt-map", &imaplen); + if (imap == NULL || imaplen < (intsize + 1)) + return 0; + iic = of_find_node_by_phandle(imap[intsize]); + if (iic == NULL) + return 0; + imap += intsize + 1; + tmp = of_get_property(iic, "#interrupt-cells", NULL); + if (tmp == NULL) { + of_node_put(iic); + return 0; + } + intsize = *tmp; + /* Assume unit is last entry of interrupt specifier */ + unit = imap[intsize - 1]; + /* Ok, we have a unit, now let's try to get the node */ + tmp = of_get_property(iic, "ibm,interrupt-server-ranges", NULL); + if (tmp == NULL) { + of_node_put(iic); + return 0; + } + /* ugly as hell but works for now */ + pic->node_id = (*tmp) >> 1; + of_node_put(iic); + + /* Ok, now let's get cracking. You may ask me why I just didn't match + * the iic host from the iic OF node, but that way I'm still compatible + * with really really old old firmwares for which we don't have a node + */ + /* Manufacture an IIC interrupt number of class 2 */ + virq = irq_create_mapping(NULL, + (pic->node_id << IIC_IRQ_NODE_SHIFT) | + (2 << IIC_IRQ_CLASS_SHIFT) | + unit); + if (!virq) + printk(KERN_ERR "spider_pic: failed to map cascade !"); + return virq; +} + + +static void __init spider_init_one(struct device_node *of_node, int chip, + unsigned long addr) +{ + struct spider_pic *pic = &spider_pics[chip]; + int i, virq; + + /* Map registers */ + pic->regs = ioremap(addr, 0x1000); + if (pic->regs == NULL) + panic("spider_pic: can't map registers !"); + + /* Allocate a host */ + pic->host = irq_domain_add_linear(of_node, SPIDER_SRC_COUNT, + &spider_host_ops, pic); + if (pic->host == NULL) + panic("spider_pic: can't allocate irq host !"); + + /* Go through all sources and disable them */ + for (i = 0; i < SPIDER_SRC_COUNT; i++) { + void __iomem *cfg = pic->regs + TIR_CFGA + 8 * i; + out_be32(cfg, in_be32(cfg) & ~0x30000000u); + } + + /* do not mask any interrupts because of level */ + out_be32(pic->regs + TIR_MSK, 0x0); + + /* enable interrupt packets to be output */ + out_be32(pic->regs + TIR_PIEN, in_be32(pic->regs + TIR_PIEN) | 0x1); + + /* Hook up the cascade interrupt to the iic and nodeid */ + virq = spider_find_cascade_and_node(pic); + if (!virq) + return; + irq_set_handler_data(virq, pic); + irq_set_chained_handler(virq, spider_irq_cascade); + + printk(KERN_INFO "spider_pic: node %d, addr: 0x%lx %pOF\n", + pic->node_id, addr, of_node); + + /* Enable the interrupt detection enable bit. Do this last! */ + out_be32(pic->regs + TIR_DEN, in_be32(pic->regs + TIR_DEN) | 0x1); +} + +void __init spider_init_IRQ(void) +{ + struct resource r; + struct device_node *dn; + int chip = 0; + + /* XXX node numbers are totally bogus. We _hope_ we get the device + * nodes in the right order here but that's definitely not guaranteed, + * we need to get the node from the device tree instead. + * There is currently no proper property for it (but our whole + * device-tree is bogus anyway) so all we can do is pray or maybe test + * the address and deduce the node-id + */ + for_each_node_by_name(dn, "interrupt-controller") { + if (of_device_is_compatible(dn, "CBEA,platform-spider-pic")) { + if (of_address_to_resource(dn, 0, &r)) { + printk(KERN_WARNING "spider-pic: Failed\n"); + continue; + } + } else if (of_device_is_compatible(dn, "sti,platform-spider-pic") + && (chip < 2)) { + static long hard_coded_pics[] = + { 0x24000008000ul, 0x34000008000ul}; + r.start = hard_coded_pics[chip]; + } else + continue; + spider_init_one(dn, chip++, r.start); + } +} -- cgit v1.2.3