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/net/arcnet/arc-rimi.c | 385 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 385 insertions(+) create mode 100644 drivers/net/arcnet/arc-rimi.c (limited to 'drivers/net/arcnet/arc-rimi.c') diff --git a/drivers/net/arcnet/arc-rimi.c b/drivers/net/arcnet/arc-rimi.c new file mode 100644 index 000000000..8c3ccc7c8 --- /dev/null +++ b/drivers/net/arcnet/arc-rimi.c @@ -0,0 +1,385 @@ +/* + * Linux ARCnet driver - "RIM I" (entirely mem-mapped) cards + * + * Written 1994-1999 by Avery Pennarun. + * Written 1999-2000 by Martin Mares . + * Derived from skeleton.c by Donald Becker. + * + * Special thanks to Contemporary Controls, Inc. (www.ccontrols.com) + * for sponsoring the further development of this driver. + * + * ********************** + * + * The original copyright of skeleton.c was as follows: + * + * skeleton.c Written 1993 by Donald Becker. + * Copyright 1993 United States Government as represented by the + * Director, National Security Agency. This software may only be used + * and distributed according to the terms of the GNU General Public License as + * modified by SRC, incorporated herein by reference. + * + * ********************** + * + * For more details, see drivers/net/arcnet.c + * + * ********************** + */ + +#define pr_fmt(fmt) "arcnet:" KBUILD_MODNAME ": " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "arcdevice.h" +#include "com9026.h" + +/* Internal function declarations */ + +static int arcrimi_probe(struct net_device *dev); +static int arcrimi_found(struct net_device *dev); +static void arcrimi_command(struct net_device *dev, int command); +static int arcrimi_status(struct net_device *dev); +static void arcrimi_setmask(struct net_device *dev, int mask); +static int arcrimi_reset(struct net_device *dev, int really_reset); +static void arcrimi_copy_to_card(struct net_device *dev, int bufnum, int offset, + void *buf, int count); +static void arcrimi_copy_from_card(struct net_device *dev, int bufnum, + int offset, void *buf, int count); + +/* Handy defines for ARCnet specific stuff */ + +/* Amount of I/O memory used by the card */ +#define BUFFER_SIZE (512) +#define MIRROR_SIZE (BUFFER_SIZE * 4) + +/* We cannot probe for a RIM I card; one reason is I don't know how to reset + * them. In fact, we can't even get their node ID automatically. So, we + * need to be passed a specific shmem address, IRQ, and node ID. + */ +static int __init arcrimi_probe(struct net_device *dev) +{ + if (BUGLVL(D_NORMAL)) { + pr_info("%s\n", "RIM I (entirely mem-mapped) support"); + pr_info("E-mail me if you actually test the RIM I driver, please!\n"); + pr_info("Given: node %02Xh, shmem %lXh, irq %d\n", + dev->dev_addr[0], dev->mem_start, dev->irq); + } + + if (dev->mem_start <= 0 || dev->irq <= 0) { + if (BUGLVL(D_NORMAL)) + pr_err("No autoprobe for RIM I; you must specify the shmem and irq!\n"); + return -ENODEV; + } + if (dev->dev_addr[0] == 0) { + if (BUGLVL(D_NORMAL)) + pr_err("You need to specify your card's station ID!\n"); + return -ENODEV; + } + /* Grab the memory region at mem_start for MIRROR_SIZE bytes. + * Later in arcrimi_found() the real size will be determined + * and this reserve will be released and the correct size + * will be taken. + */ + if (!request_mem_region(dev->mem_start, MIRROR_SIZE, "arcnet (90xx)")) { + if (BUGLVL(D_NORMAL)) + pr_notice("Card memory already allocated\n"); + return -ENODEV; + } + return arcrimi_found(dev); +} + +static int check_mirror(unsigned long addr, size_t size) +{ + void __iomem *p; + int res = -1; + + if (!request_mem_region(addr, size, "arcnet (90xx)")) + return -1; + + p = ioremap(addr, size); + if (p) { + if (arcnet_readb(p, COM9026_REG_R_STATUS) == TESTvalue) + res = 1; + else + res = 0; + iounmap(p); + } + + release_mem_region(addr, size); + return res; +} + +/* Set up the struct net_device associated with this card. + * Called after probing succeeds. + */ +static int __init arcrimi_found(struct net_device *dev) +{ + struct arcnet_local *lp; + unsigned long first_mirror, last_mirror, shmem; + void __iomem *p; + int mirror_size; + int err; + + p = ioremap(dev->mem_start, MIRROR_SIZE); + if (!p) { + release_mem_region(dev->mem_start, MIRROR_SIZE); + arc_printk(D_NORMAL, dev, "Can't ioremap\n"); + return -ENODEV; + } + + /* reserve the irq */ + if (request_irq(dev->irq, arcnet_interrupt, 0, "arcnet (RIM I)", dev)) { + iounmap(p); + release_mem_region(dev->mem_start, MIRROR_SIZE); + arc_printk(D_NORMAL, dev, "Can't get IRQ %d!\n", dev->irq); + return -ENODEV; + } + + shmem = dev->mem_start; + arcnet_writeb(TESTvalue, p, COM9026_REG_W_INTMASK); + arcnet_writeb(TESTvalue, p, COM9026_REG_W_COMMAND); + /* actually the station/node ID */ + + /* find the real shared memory start/end points, including mirrors */ + + /* guess the actual size of one "memory mirror" - the number of + * bytes between copies of the shared memory. On most cards, it's + * 2k (or there are no mirrors at all) but on some, it's 4k. + */ + mirror_size = MIRROR_SIZE; + if (arcnet_readb(p, COM9026_REG_R_STATUS) == TESTvalue && + check_mirror(shmem - MIRROR_SIZE, MIRROR_SIZE) == 0 && + check_mirror(shmem - 2 * MIRROR_SIZE, MIRROR_SIZE) == 1) + mirror_size = 2 * MIRROR_SIZE; + + first_mirror = shmem - mirror_size; + while (check_mirror(first_mirror, mirror_size) == 1) + first_mirror -= mirror_size; + first_mirror += mirror_size; + + last_mirror = shmem + mirror_size; + while (check_mirror(last_mirror, mirror_size) == 1) + last_mirror += mirror_size; + last_mirror -= mirror_size; + + dev->mem_start = first_mirror; + dev->mem_end = last_mirror + MIRROR_SIZE - 1; + + /* initialize the rest of the device structure. */ + + lp = netdev_priv(dev); + lp->card_name = "RIM I"; + lp->hw.command = arcrimi_command; + lp->hw.status = arcrimi_status; + lp->hw.intmask = arcrimi_setmask; + lp->hw.reset = arcrimi_reset; + lp->hw.owner = THIS_MODULE; + lp->hw.copy_to_card = arcrimi_copy_to_card; + lp->hw.copy_from_card = arcrimi_copy_from_card; + + /* re-reserve the memory region - arcrimi_probe() alloced this reqion + * but didn't know the real size. Free that region and then re-get + * with the correct size. There is a VERY slim chance this could + * fail. + */ + iounmap(p); + release_mem_region(shmem, MIRROR_SIZE); + if (!request_mem_region(dev->mem_start, + dev->mem_end - dev->mem_start + 1, + "arcnet (90xx)")) { + arc_printk(D_NORMAL, dev, "Card memory already allocated\n"); + goto err_free_irq; + } + + lp->mem_start = ioremap(dev->mem_start, + dev->mem_end - dev->mem_start + 1); + if (!lp->mem_start) { + arc_printk(D_NORMAL, dev, "Can't remap device memory!\n"); + goto err_release_mem; + } + + /* get and check the station ID from offset 1 in shmem */ + arcnet_set_addr(dev, arcnet_readb(lp->mem_start, + COM9026_REG_R_STATION)); + + arc_printk(D_NORMAL, dev, "ARCnet RIM I: station %02Xh found at IRQ %d, ShMem %lXh (%ld*%d bytes)\n", + dev->dev_addr[0], + dev->irq, dev->mem_start, + (dev->mem_end - dev->mem_start + 1) / mirror_size, + mirror_size); + + err = register_netdev(dev); + if (err) + goto err_unmap; + + return 0; + +err_unmap: + iounmap(lp->mem_start); +err_release_mem: + release_mem_region(dev->mem_start, dev->mem_end - dev->mem_start + 1); +err_free_irq: + free_irq(dev->irq, dev); + return -EIO; +} + +/* Do a hardware reset on the card, and set up necessary registers. + * + * This should be called as little as possible, because it disrupts the + * token on the network (causes a RECON) and requires a significant delay. + * + * However, it does make sure the card is in a defined state. + */ +static int arcrimi_reset(struct net_device *dev, int really_reset) +{ + struct arcnet_local *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->mem_start + 0x800; + + arc_printk(D_INIT, dev, "Resetting %s (status=%02Xh)\n", + dev->name, arcnet_readb(ioaddr, COM9026_REG_R_STATUS)); + + if (really_reset) { + arcnet_writeb(TESTvalue, ioaddr, -0x800); /* fake reset */ + return 0; + } + /* clear flags & end reset */ + arcnet_writeb(CFLAGScmd | RESETclear, ioaddr, COM9026_REG_W_COMMAND); + arcnet_writeb(CFLAGScmd | CONFIGclear, ioaddr, COM9026_REG_W_COMMAND); + + /* enable extended (512-byte) packets */ + arcnet_writeb(CONFIGcmd | EXTconf, ioaddr, COM9026_REG_W_COMMAND); + + /* done! return success. */ + return 0; +} + +static void arcrimi_setmask(struct net_device *dev, int mask) +{ + struct arcnet_local *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->mem_start + 0x800; + + arcnet_writeb(mask, ioaddr, COM9026_REG_W_INTMASK); +} + +static int arcrimi_status(struct net_device *dev) +{ + struct arcnet_local *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->mem_start + 0x800; + + return arcnet_readb(ioaddr, COM9026_REG_R_STATUS); +} + +static void arcrimi_command(struct net_device *dev, int cmd) +{ + struct arcnet_local *lp = netdev_priv(dev); + void __iomem *ioaddr = lp->mem_start + 0x800; + + arcnet_writeb(cmd, ioaddr, COM9026_REG_W_COMMAND); +} + +static void arcrimi_copy_to_card(struct net_device *dev, int bufnum, int offset, + void *buf, int count) +{ + struct arcnet_local *lp = netdev_priv(dev); + void __iomem *memaddr = lp->mem_start + 0x800 + bufnum * 512 + offset; + + TIME(dev, "memcpy_toio", count, memcpy_toio(memaddr, buf, count)); +} + +static void arcrimi_copy_from_card(struct net_device *dev, int bufnum, + int offset, void *buf, int count) +{ + struct arcnet_local *lp = netdev_priv(dev); + void __iomem *memaddr = lp->mem_start + 0x800 + bufnum * 512 + offset; + + TIME(dev, "memcpy_fromio", count, memcpy_fromio(buf, memaddr, count)); +} + +static int node; +static int io; /* use the insmod io= irq= node= options */ +static int irq; +static char device[9]; /* use eg. device=arc1 to change name */ + +module_param(node, int, 0); +module_param(io, int, 0); +module_param(irq, int, 0); +module_param_string(device, device, sizeof(device), 0); +MODULE_LICENSE("GPL"); + +static struct net_device *my_dev; + +static int __init arc_rimi_init(void) +{ + struct net_device *dev; + + dev = alloc_arcdev(device); + if (!dev) + return -ENOMEM; + + if (node && node != 0xff) + arcnet_set_addr(dev, node); + + dev->mem_start = io; + dev->irq = irq; + if (dev->irq == 2) + dev->irq = 9; + + if (arcrimi_probe(dev)) { + free_arcdev(dev); + return -EIO; + } + + my_dev = dev; + return 0; +} + +static void __exit arc_rimi_exit(void) +{ + struct net_device *dev = my_dev; + struct arcnet_local *lp = netdev_priv(dev); + + unregister_netdev(dev); + iounmap(lp->mem_start); + release_mem_region(dev->mem_start, dev->mem_end - dev->mem_start + 1); + free_irq(dev->irq, dev); + free_arcdev(dev); +} + +#ifndef MODULE +static int __init arcrimi_setup(char *s) +{ + int ints[8]; + + s = get_options(s, 8, ints); + if (!ints[0]) + return 1; + switch (ints[0]) { + default: /* ERROR */ + pr_err("Too many arguments\n"); + fallthrough; + case 3: /* Node ID */ + node = ints[3]; + fallthrough; + case 2: /* IRQ */ + irq = ints[2]; + fallthrough; + case 1: /* IO address */ + io = ints[1]; + } + if (*s) + snprintf(device, sizeof(device), "%s", s); + return 1; +} +__setup("arcrimi=", arcrimi_setup); +#endif /* MODULE */ + +module_init(arc_rimi_init) +module_exit(arc_rimi_exit) -- cgit v1.2.3