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/tifm_core.c | 366 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 366 insertions(+) create mode 100644 drivers/misc/tifm_core.c (limited to 'drivers/misc/tifm_core.c') diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c new file mode 100644 index 000000000..a3098fea3 --- /dev/null +++ b/drivers/misc/tifm_core.c @@ -0,0 +1,366 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tifm_core.c - TI FlashMedia driver + * + * Copyright (C) 2006 Alex Dubov + */ + +#include +#include +#include +#include +#include + +#define DRIVER_NAME "tifm_core" +#define DRIVER_VERSION "0.8" + +static struct workqueue_struct *workqueue; +static DEFINE_IDR(tifm_adapter_idr); +static DEFINE_SPINLOCK(tifm_adapter_lock); + +static const char *tifm_media_type_name(unsigned char type, unsigned char nt) +{ + const char *card_type_name[3][3] = { + { "SmartMedia/xD", "MemoryStick", "MMC/SD" }, + { "XD", "MS", "SD"}, + { "xd", "ms", "sd"} + }; + + if (nt > 2 || type < 1 || type > 3) + return NULL; + return card_type_name[nt][type - 1]; +} + +static int tifm_dev_match(struct tifm_dev *sock, struct tifm_device_id *id) +{ + if (sock->type == id->type) + return 1; + return 0; +} + +static int tifm_bus_match(struct device *dev, struct device_driver *drv) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver, + driver); + struct tifm_device_id *ids = fm_drv->id_table; + + if (ids) { + while (ids->type) { + if (tifm_dev_match(sock, ids)) + return 1; + ++ids; + } + } + return 0; +} + +static int tifm_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + + if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1))) + return -ENOMEM; + + return 0; +} + +static int tifm_device_probe(struct device *dev) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, + driver); + int rc = -ENODEV; + + get_device(dev); + if (dev->driver && drv->probe) { + rc = drv->probe(sock); + if (!rc) + return 0; + } + put_device(dev); + return rc; +} + +static void tifm_dummy_event(struct tifm_dev *sock) +{ + return; +} + +static void tifm_device_remove(struct device *dev) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, + driver); + + if (dev->driver && drv->remove) { + sock->card_event = tifm_dummy_event; + sock->data_event = tifm_dummy_event; + drv->remove(sock); + sock->dev.driver = NULL; + } + + put_device(dev); +} + +#ifdef CONFIG_PM + +static int tifm_device_suspend(struct device *dev, pm_message_t state) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, + driver); + + if (dev->driver && drv->suspend) + return drv->suspend(sock, state); + return 0; +} + +static int tifm_device_resume(struct device *dev) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver, + driver); + + if (dev->driver && drv->resume) + return drv->resume(sock); + return 0; +} + +#else + +#define tifm_device_suspend NULL +#define tifm_device_resume NULL + +#endif /* CONFIG_PM */ + +static ssize_t type_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + return sprintf(buf, "%x", sock->type); +} +static DEVICE_ATTR_RO(type); + +static struct attribute *tifm_dev_attrs[] = { + &dev_attr_type.attr, + NULL, +}; +ATTRIBUTE_GROUPS(tifm_dev); + +static struct bus_type tifm_bus_type = { + .name = "tifm", + .dev_groups = tifm_dev_groups, + .match = tifm_bus_match, + .uevent = tifm_uevent, + .probe = tifm_device_probe, + .remove = tifm_device_remove, + .suspend = tifm_device_suspend, + .resume = tifm_device_resume +}; + +static void tifm_free(struct device *dev) +{ + struct tifm_adapter *fm = container_of(dev, struct tifm_adapter, dev); + + kfree(fm); +} + +static struct class tifm_adapter_class = { + .name = "tifm_adapter", + .dev_release = tifm_free +}; + +struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets, + struct device *dev) +{ + struct tifm_adapter *fm; + + fm = kzalloc(struct_size(fm, sockets, num_sockets), GFP_KERNEL); + if (fm) { + fm->dev.class = &tifm_adapter_class; + fm->dev.parent = dev; + device_initialize(&fm->dev); + spin_lock_init(&fm->lock); + fm->num_sockets = num_sockets; + } + return fm; +} +EXPORT_SYMBOL(tifm_alloc_adapter); + +int tifm_add_adapter(struct tifm_adapter *fm) +{ + int rc; + + idr_preload(GFP_KERNEL); + spin_lock(&tifm_adapter_lock); + rc = idr_alloc(&tifm_adapter_idr, fm, 0, 0, GFP_NOWAIT); + if (rc >= 0) + fm->id = rc; + spin_unlock(&tifm_adapter_lock); + idr_preload_end(); + if (rc < 0) + return rc; + + dev_set_name(&fm->dev, "tifm%u", fm->id); + rc = device_add(&fm->dev); + if (rc) { + spin_lock(&tifm_adapter_lock); + idr_remove(&tifm_adapter_idr, fm->id); + spin_unlock(&tifm_adapter_lock); + } + + return rc; +} +EXPORT_SYMBOL(tifm_add_adapter); + +void tifm_remove_adapter(struct tifm_adapter *fm) +{ + unsigned int cnt; + + flush_workqueue(workqueue); + for (cnt = 0; cnt < fm->num_sockets; ++cnt) { + if (fm->sockets[cnt]) + device_unregister(&fm->sockets[cnt]->dev); + } + + spin_lock(&tifm_adapter_lock); + idr_remove(&tifm_adapter_idr, fm->id); + spin_unlock(&tifm_adapter_lock); + device_del(&fm->dev); +} +EXPORT_SYMBOL(tifm_remove_adapter); + +void tifm_free_adapter(struct tifm_adapter *fm) +{ + put_device(&fm->dev); +} +EXPORT_SYMBOL(tifm_free_adapter); + +void tifm_free_device(struct device *dev) +{ + struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); + kfree(sock); +} +EXPORT_SYMBOL(tifm_free_device); + +struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id, + unsigned char type) +{ + struct tifm_dev *sock = NULL; + + if (!tifm_media_type_name(type, 0)) + return sock; + + sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL); + if (sock) { + spin_lock_init(&sock->lock); + sock->type = type; + sock->socket_id = id; + sock->card_event = tifm_dummy_event; + sock->data_event = tifm_dummy_event; + + sock->dev.parent = fm->dev.parent; + sock->dev.bus = &tifm_bus_type; + sock->dev.dma_mask = fm->dev.parent->dma_mask; + sock->dev.release = tifm_free_device; + + dev_set_name(&sock->dev, "tifm_%s%u:%u", + tifm_media_type_name(type, 2), fm->id, id); + printk(KERN_INFO DRIVER_NAME + ": %s card detected in socket %u:%u\n", + tifm_media_type_name(type, 0), fm->id, id); + } + return sock; +} +EXPORT_SYMBOL(tifm_alloc_device); + +void tifm_eject(struct tifm_dev *sock) +{ + struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent); + fm->eject(fm, sock); +} +EXPORT_SYMBOL(tifm_eject); + +int tifm_has_ms_pif(struct tifm_dev *sock) +{ + struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent); + return fm->has_ms_pif(fm, sock); +} +EXPORT_SYMBOL(tifm_has_ms_pif); + +int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, + int direction) +{ + return dma_map_sg(&to_pci_dev(sock->dev.parent)->dev, sg, nents, + direction); +} +EXPORT_SYMBOL(tifm_map_sg); + +void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents, + int direction) +{ + dma_unmap_sg(&to_pci_dev(sock->dev.parent)->dev, sg, nents, direction); +} +EXPORT_SYMBOL(tifm_unmap_sg); + +void tifm_queue_work(struct work_struct *work) +{ + queue_work(workqueue, work); +} +EXPORT_SYMBOL(tifm_queue_work); + +int tifm_register_driver(struct tifm_driver *drv) +{ + drv->driver.bus = &tifm_bus_type; + + return driver_register(&drv->driver); +} +EXPORT_SYMBOL(tifm_register_driver); + +void tifm_unregister_driver(struct tifm_driver *drv) +{ + driver_unregister(&drv->driver); +} +EXPORT_SYMBOL(tifm_unregister_driver); + +static int __init tifm_init(void) +{ + int rc; + + workqueue = create_freezable_workqueue("tifm"); + if (!workqueue) + return -ENOMEM; + + rc = bus_register(&tifm_bus_type); + + if (rc) + goto err_out_wq; + + rc = class_register(&tifm_adapter_class); + if (!rc) + return 0; + + bus_unregister(&tifm_bus_type); + +err_out_wq: + destroy_workqueue(workqueue); + + return rc; +} + +static void __exit tifm_exit(void) +{ + class_unregister(&tifm_adapter_class); + bus_unregister(&tifm_bus_type); + destroy_workqueue(workqueue); +} + +subsys_initcall(tifm_init); +module_exit(tifm_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Alex Dubov"); +MODULE_DESCRIPTION("TI FlashMedia core driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRIVER_VERSION); -- cgit v1.2.3