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/misc/cb710/core.c | 329 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 329 insertions(+) create mode 100644 drivers/misc/cb710/core.c (limited to 'drivers/misc/cb710/core.c') diff --git a/drivers/misc/cb710/core.c b/drivers/misc/cb710/core.c new file mode 100644 index 000000000..55b7ee0e8 --- /dev/null +++ b/drivers/misc/cb710/core.c @@ -0,0 +1,329 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * cb710/core.c + * + * Copyright by Michał Mirosław, 2008-2009 + */ +#include +#include +#include +#include +#include +#include +#include + +static DEFINE_IDA(cb710_ida); + +void cb710_pci_update_config_reg(struct pci_dev *pdev, + int reg, uint32_t mask, uint32_t xor) +{ + u32 rval; + + pci_read_config_dword(pdev, reg, &rval); + rval = (rval & mask) ^ xor; + pci_write_config_dword(pdev, reg, rval); +} +EXPORT_SYMBOL_GPL(cb710_pci_update_config_reg); + +/* Some magic writes based on Windows driver init code */ +static int cb710_pci_configure(struct pci_dev *pdev) +{ + unsigned int devfn = PCI_DEVFN(PCI_SLOT(pdev->devfn), 0); + struct pci_dev *pdev0; + u32 val; + + cb710_pci_update_config_reg(pdev, 0x48, + ~0x000000FF, 0x0000003F); + + pci_read_config_dword(pdev, 0x48, &val); + if (val & 0x80000000) + return 0; + + pdev0 = pci_get_slot(pdev->bus, devfn); + if (!pdev0) + return -ENODEV; + + if (pdev0->vendor == PCI_VENDOR_ID_ENE + && pdev0->device == PCI_DEVICE_ID_ENE_720) { + cb710_pci_update_config_reg(pdev0, 0x8C, + ~0x00F00000, 0x00100000); + cb710_pci_update_config_reg(pdev0, 0xB0, + ~0x08000000, 0x08000000); + } + + cb710_pci_update_config_reg(pdev0, 0x8C, + ~0x00000F00, 0x00000200); + cb710_pci_update_config_reg(pdev0, 0x90, + ~0x00060000, 0x00040000); + + pci_dev_put(pdev0); + + return 0; +} + +static irqreturn_t cb710_irq_handler(int irq, void *data) +{ + struct cb710_chip *chip = data; + struct cb710_slot *slot = &chip->slot[0]; + irqreturn_t handled = IRQ_NONE; + unsigned nr; + + spin_lock(&chip->irq_lock); /* incl. smp_rmb() */ + + for (nr = chip->slots; nr; ++slot, --nr) { + cb710_irq_handler_t handler_func = slot->irq_handler; + if (handler_func && handler_func(slot)) + handled = IRQ_HANDLED; + } + + spin_unlock(&chip->irq_lock); + + return handled; +} + +static void cb710_release_slot(struct device *dev) +{ +#ifdef CONFIG_CB710_DEBUG_ASSUMPTIONS + struct cb710_slot *slot = cb710_pdev_to_slot(to_platform_device(dev)); + struct cb710_chip *chip = cb710_slot_to_chip(slot); + + /* slot struct can be freed now */ + atomic_dec(&chip->slot_refs_count); +#endif +} + +static int cb710_register_slot(struct cb710_chip *chip, + unsigned slot_mask, unsigned io_offset, const char *name) +{ + int nr = chip->slots; + struct cb710_slot *slot = &chip->slot[nr]; + int err; + + dev_dbg(cb710_chip_dev(chip), + "register: %s.%d; slot %d; mask %d; IO offset: 0x%02X\n", + name, chip->platform_id, nr, slot_mask, io_offset); + + /* slot->irq_handler == NULL here; this needs to be + * seen before platform_device_register() */ + ++chip->slots; + smp_wmb(); + + slot->iobase = chip->iobase + io_offset; + slot->pdev.name = name; + slot->pdev.id = chip->platform_id; + slot->pdev.dev.parent = &chip->pdev->dev; + slot->pdev.dev.release = cb710_release_slot; + + err = platform_device_register(&slot->pdev); + +#ifdef CONFIG_CB710_DEBUG_ASSUMPTIONS + atomic_inc(&chip->slot_refs_count); +#endif + + if (err) { + /* device_initialize() called from platform_device_register() + * wants this on error path */ + platform_device_put(&slot->pdev); + + /* slot->irq_handler == NULL here anyway, so no lock needed */ + --chip->slots; + return err; + } + + chip->slot_mask |= slot_mask; + + return 0; +} + +static void cb710_unregister_slot(struct cb710_chip *chip, + unsigned slot_mask) +{ + int nr = chip->slots - 1; + + if (!(chip->slot_mask & slot_mask)) + return; + + platform_device_unregister(&chip->slot[nr].pdev); + + /* complementary to spin_unlock() in cb710_set_irq_handler() */ + smp_rmb(); + BUG_ON(chip->slot[nr].irq_handler != NULL); + + /* slot->irq_handler == NULL here, so no lock needed */ + --chip->slots; + chip->slot_mask &= ~slot_mask; +} + +void cb710_set_irq_handler(struct cb710_slot *slot, + cb710_irq_handler_t handler) +{ + struct cb710_chip *chip = cb710_slot_to_chip(slot); + unsigned long flags; + + spin_lock_irqsave(&chip->irq_lock, flags); + slot->irq_handler = handler; + spin_unlock_irqrestore(&chip->irq_lock, flags); +} +EXPORT_SYMBOL_GPL(cb710_set_irq_handler); + +static int __maybe_unused cb710_suspend(struct device *dev_d) +{ + struct pci_dev *pdev = to_pci_dev(dev_d); + struct cb710_chip *chip = pci_get_drvdata(pdev); + + devm_free_irq(&pdev->dev, pdev->irq, chip); + return 0; +} + +static int __maybe_unused cb710_resume(struct device *dev_d) +{ + struct pci_dev *pdev = to_pci_dev(dev_d); + struct cb710_chip *chip = pci_get_drvdata(pdev); + + return devm_request_irq(&pdev->dev, pdev->irq, + cb710_irq_handler, IRQF_SHARED, KBUILD_MODNAME, chip); +} + +static int cb710_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct cb710_chip *chip; + u32 val; + int err; + int n = 0; + + err = cb710_pci_configure(pdev); + if (err) + return err; + + /* this is actually magic... */ + pci_read_config_dword(pdev, 0x48, &val); + if (!(val & 0x80000000)) { + pci_write_config_dword(pdev, 0x48, val|0x71000000); + pci_read_config_dword(pdev, 0x48, &val); + } + + dev_dbg(&pdev->dev, "PCI config[0x48] = 0x%08X\n", val); + if (!(val & 0x70000000)) + return -ENODEV; + val = (val >> 28) & 7; + if (val & CB710_SLOT_MMC) + ++n; + if (val & CB710_SLOT_MS) + ++n; + if (val & CB710_SLOT_SM) + ++n; + + chip = devm_kzalloc(&pdev->dev, struct_size(chip, slot, n), + GFP_KERNEL); + if (!chip) + return -ENOMEM; + + err = pcim_enable_device(pdev); + if (err) + return err; + + err = pcim_iomap_regions(pdev, 0x0001, KBUILD_MODNAME); + if (err) + return err; + + spin_lock_init(&chip->irq_lock); + chip->pdev = pdev; + chip->iobase = pcim_iomap_table(pdev)[0]; + + pci_set_drvdata(pdev, chip); + + err = devm_request_irq(&pdev->dev, pdev->irq, + cb710_irq_handler, IRQF_SHARED, KBUILD_MODNAME, chip); + if (err) + return err; + + err = ida_alloc(&cb710_ida, GFP_KERNEL); + if (err < 0) + return err; + chip->platform_id = err; + + dev_info(&pdev->dev, "id %d, IO 0x%p, IRQ %d\n", + chip->platform_id, chip->iobase, pdev->irq); + + if (val & CB710_SLOT_MMC) { /* MMC/SD slot */ + err = cb710_register_slot(chip, + CB710_SLOT_MMC, 0x00, "cb710-mmc"); + if (err) + return err; + } + + if (val & CB710_SLOT_MS) { /* MemoryStick slot */ + err = cb710_register_slot(chip, + CB710_SLOT_MS, 0x40, "cb710-ms"); + if (err) + goto unreg_mmc; + } + + if (val & CB710_SLOT_SM) { /* SmartMedia slot */ + err = cb710_register_slot(chip, + CB710_SLOT_SM, 0x60, "cb710-sm"); + if (err) + goto unreg_ms; + } + + return 0; +unreg_ms: + cb710_unregister_slot(chip, CB710_SLOT_MS); +unreg_mmc: + cb710_unregister_slot(chip, CB710_SLOT_MMC); + +#ifdef CONFIG_CB710_DEBUG_ASSUMPTIONS + BUG_ON(atomic_read(&chip->slot_refs_count) != 0); +#endif + return err; +} + +static void cb710_remove_one(struct pci_dev *pdev) +{ + struct cb710_chip *chip = pci_get_drvdata(pdev); + + cb710_unregister_slot(chip, CB710_SLOT_SM); + cb710_unregister_slot(chip, CB710_SLOT_MS); + cb710_unregister_slot(chip, CB710_SLOT_MMC); +#ifdef CONFIG_CB710_DEBUG_ASSUMPTIONS + BUG_ON(atomic_read(&chip->slot_refs_count) != 0); +#endif + + ida_free(&cb710_ida, chip->platform_id); +} + +static const struct pci_device_id cb710_pci_tbl[] = { + { PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_CB710_FLASH, + PCI_ANY_ID, PCI_ANY_ID, }, + { 0, } +}; + +static SIMPLE_DEV_PM_OPS(cb710_pm_ops, cb710_suspend, cb710_resume); + +static struct pci_driver cb710_driver = { + .name = KBUILD_MODNAME, + .id_table = cb710_pci_tbl, + .probe = cb710_probe, + .remove = cb710_remove_one, + .driver.pm = &cb710_pm_ops, +}; + +static int __init cb710_init_module(void) +{ + return pci_register_driver(&cb710_driver); +} + +static void __exit cb710_cleanup_module(void) +{ + pci_unregister_driver(&cb710_driver); + ida_destroy(&cb710_ida); +} + +module_init(cb710_init_module); +module_exit(cb710_cleanup_module); + +MODULE_AUTHOR("Michał Mirosław "); +MODULE_DESCRIPTION("ENE CB710 memory card reader driver"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, cb710_pci_tbl); -- cgit v1.2.3