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/hid/hid-thrustmaster.c | 389 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 389 insertions(+) create mode 100644 drivers/hid/hid-thrustmaster.c (limited to 'drivers/hid/hid-thrustmaster.c') diff --git a/drivers/hid/hid-thrustmaster.c b/drivers/hid/hid-thrustmaster.c new file mode 100644 index 000000000..cf1679b0d --- /dev/null +++ b/drivers/hid/hid-thrustmaster.c @@ -0,0 +1,389 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * When connected to the machine, the Thrustmaster wheels appear as + * a «generic» hid gamepad called "Thrustmaster FFB Wheel". + * + * When in this mode not every functionality of the wheel, like the force feedback, + * are available. To enable all functionalities of a Thrustmaster wheel we have to send + * to it a specific USB CONTROL request with a code different for each wheel. + * + * This driver tries to understand which model of Thrustmaster wheel the generic + * "Thrustmaster FFB Wheel" really is and then sends the appropriate control code. + * + * Copyright (c) 2020-2021 Dario Pagani + * Copyright (c) 2020-2021 Kim Kuparinen + */ +#include +#include +#include +#include +#include + +/* + * These interrupts are used to prevent a nasty crash when initializing the + * T300RS. Used in thrustmaster_interrupts(). + */ +static const u8 setup_0[] = { 0x42, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; +static const u8 setup_1[] = { 0x0a, 0x04, 0x90, 0x03, 0x00, 0x00, 0x00, 0x00 }; +static const u8 setup_2[] = { 0x0a, 0x04, 0x00, 0x0c, 0x00, 0x00, 0x00, 0x00 }; +static const u8 setup_3[] = { 0x0a, 0x04, 0x12, 0x10, 0x00, 0x00, 0x00, 0x00 }; +static const u8 setup_4[] = { 0x0a, 0x04, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00 }; +static const u8 *const setup_arr[] = { setup_0, setup_1, setup_2, setup_3, setup_4 }; +static const unsigned int setup_arr_sizes[] = { + ARRAY_SIZE(setup_0), + ARRAY_SIZE(setup_1), + ARRAY_SIZE(setup_2), + ARRAY_SIZE(setup_3), + ARRAY_SIZE(setup_4) +}; +/* + * This struct contains for each type of + * Thrustmaster wheel + * + * Note: The values are stored in the CPU + * endianness, the USB protocols always use + * little endian; the macro cpu_to_le[BIT]() + * must be used when preparing USB packets + * and vice-versa + */ +struct tm_wheel_info { + uint16_t wheel_type; + + /* + * See when the USB control out packet is prepared... + * @TODO The TMX seems to require multiple control codes to switch. + */ + uint16_t switch_value; + + char const *const wheel_name; +}; + +/* + * Known wheels. + * Note: TMX does not work as it requires 2 control packets + */ +static const struct tm_wheel_info tm_wheels_infos[] = { + {0x0306, 0x0006, "Thrustmaster T150RS"}, + {0x0200, 0x0005, "Thrustmaster T300RS (Missing Attachment)"}, + {0x0206, 0x0005, "Thrustmaster T300RS"}, + {0x0209, 0x0005, "Thrustmaster T300RS (Open Wheel Attachment)"}, + {0x020a, 0x0005, "Thrustmaster T300RS (Sparco R383 Mod)"}, + {0x0204, 0x0005, "Thrustmaster T300 Ferrari Alcantara Edition"}, + {0x0002, 0x0002, "Thrustmaster T500RS"} + //{0x0407, 0x0001, "Thrustmaster TMX"} +}; + +static const uint8_t tm_wheels_infos_length = 7; + +/* + * This structs contains (in little endian) the response data + * of the wheel to the request 73 + * + * A sufficient research to understand what each field does is not + * beign conducted yet. The position and meaning of fields are a + * just a very optimistic guess based on instinct.... + */ +struct __packed tm_wheel_response +{ + /* + * Seems to be the type of packet + * - 0x0049 if is data.a (15 bytes) + * - 0x0047 if is data.b (7 bytes) + */ + uint16_t type; + + union { + struct __packed { + uint16_t field0; + uint16_t field1; + /* + * Seems to be the model code of the wheel + * Read table thrustmaster_wheels to values + */ + uint16_t model; + + uint16_t field2; + uint16_t field3; + uint16_t field4; + uint16_t field5; + } a; + struct __packed { + uint16_t field0; + uint16_t field1; + uint16_t model; + } b; + } data; +}; + +struct tm_wheel { + struct usb_device *usb_dev; + struct urb *urb; + + struct usb_ctrlrequest *model_request; + struct tm_wheel_response *response; + + struct usb_ctrlrequest *change_request; +}; + +/* The control packet to send to wheel */ +static const struct usb_ctrlrequest model_request = { + .bRequestType = 0xc1, + .bRequest = 73, + .wValue = 0, + .wIndex = 0, + .wLength = cpu_to_le16(0x0010) +}; + +static const struct usb_ctrlrequest change_request = { + .bRequestType = 0x41, + .bRequest = 83, + .wValue = 0, // Will be filled by the driver + .wIndex = 0, + .wLength = 0 +}; + +/* + * On some setups initializing the T300RS crashes the kernel, + * these interrupts fix that particular issue. So far they haven't caused any + * adverse effects in other wheels. + */ +static void thrustmaster_interrupts(struct hid_device *hdev) +{ + int ret, trans, i, b_ep; + u8 *send_buf = kmalloc(256, GFP_KERNEL); + struct usb_host_endpoint *ep; + struct device *dev = &hdev->dev; + struct usb_interface *usbif = to_usb_interface(dev->parent); + struct usb_device *usbdev = interface_to_usbdev(usbif); + + if (!send_buf) { + hid_err(hdev, "failed allocating send buffer\n"); + return; + } + + if (usbif->cur_altsetting->desc.bNumEndpoints < 2) { + kfree(send_buf); + hid_err(hdev, "Wrong number of endpoints?\n"); + return; + } + + ep = &usbif->cur_altsetting->endpoint[1]; + b_ep = ep->desc.bEndpointAddress; + + for (i = 0; i < ARRAY_SIZE(setup_arr); ++i) { + memcpy(send_buf, setup_arr[i], setup_arr_sizes[i]); + + ret = usb_interrupt_msg(usbdev, + usb_sndintpipe(usbdev, b_ep), + send_buf, + setup_arr_sizes[i], + &trans, + USB_CTRL_SET_TIMEOUT); + + if (ret) { + hid_err(hdev, "setup data couldn't be sent\n"); + kfree(send_buf); + return; + } + } + + kfree(send_buf); +} + +static void thrustmaster_change_handler(struct urb *urb) +{ + struct hid_device *hdev = urb->context; + + // The wheel seems to kill himself before answering the host and therefore is violating the USB protocol... + if (urb->status == 0 || urb->status == -EPROTO || urb->status == -EPIPE) + hid_info(hdev, "Success?! The wheel should have been initialized!\n"); + else + hid_warn(hdev, "URB to change wheel mode seems to have failed with error %d\n", urb->status); +} + +/* + * Called by the USB subsystem when the wheel responses to our request + * to get [what it seems to be] the wheel's model. + * + * If the model id is recognized then we send an opportune USB CONTROL REQUEST + * to switch the wheel to its full capabilities + */ +static void thrustmaster_model_handler(struct urb *urb) +{ + struct hid_device *hdev = urb->context; + struct tm_wheel *tm_wheel = hid_get_drvdata(hdev); + uint16_t model = 0; + int i, ret; + const struct tm_wheel_info *twi = NULL; + + if (urb->status) { + hid_err(hdev, "URB to get model id failed with error %d\n", urb->status); + return; + } + + if (tm_wheel->response->type == cpu_to_le16(0x49)) + model = le16_to_cpu(tm_wheel->response->data.a.model); + else if (tm_wheel->response->type == cpu_to_le16(0x47)) + model = le16_to_cpu(tm_wheel->response->data.b.model); + else { + hid_err(hdev, "Unknown packet type 0x%x, unable to proceed further with wheel init\n", tm_wheel->response->type); + return; + } + + for (i = 0; i < tm_wheels_infos_length && !twi; i++) + if (tm_wheels_infos[i].wheel_type == model) + twi = tm_wheels_infos + i; + + if (twi) + hid_info(hdev, "Wheel with model id 0x%x is a %s\n", model, twi->wheel_name); + else { + hid_err(hdev, "Unknown wheel's model id 0x%x, unable to proceed further with wheel init\n", model); + return; + } + + tm_wheel->change_request->wValue = cpu_to_le16(twi->switch_value); + usb_fill_control_urb( + tm_wheel->urb, + tm_wheel->usb_dev, + usb_sndctrlpipe(tm_wheel->usb_dev, 0), + (char *)tm_wheel->change_request, + NULL, 0, // We do not expect any response from the wheel + thrustmaster_change_handler, + hdev + ); + + ret = usb_submit_urb(tm_wheel->urb, GFP_ATOMIC); + if (ret) + hid_err(hdev, "Error %d while submitting the change URB. I am unable to initialize this wheel...\n", ret); +} + +static void thrustmaster_remove(struct hid_device *hdev) +{ + struct tm_wheel *tm_wheel = hid_get_drvdata(hdev); + + usb_kill_urb(tm_wheel->urb); + + kfree(tm_wheel->change_request); + kfree(tm_wheel->response); + kfree(tm_wheel->model_request); + usb_free_urb(tm_wheel->urb); + kfree(tm_wheel); + + hid_hw_stop(hdev); +} + +/* + * Function called by HID when a hid Thrustmaster FFB wheel is connected to the host. + * This function starts the hid dev, tries to allocate the tm_wheel data structure and + * finally send an USB CONTROL REQUEST to the wheel to get [what it seems to be] its + * model type. + */ +static int thrustmaster_probe(struct hid_device *hdev, const struct hid_device_id *id) +{ + int ret = 0; + struct tm_wheel *tm_wheel = NULL; + + if (!hid_is_usb(hdev)) + return -EINVAL; + + ret = hid_parse(hdev); + if (ret) { + hid_err(hdev, "parse failed with error %d\n", ret); + goto error0; + } + + ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); + if (ret) { + hid_err(hdev, "hw start failed with error %d\n", ret); + goto error0; + } + + // Now we allocate the tm_wheel + tm_wheel = kzalloc(sizeof(struct tm_wheel), GFP_KERNEL); + if (!tm_wheel) { + ret = -ENOMEM; + goto error1; + } + + tm_wheel->urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!tm_wheel->urb) { + ret = -ENOMEM; + goto error2; + } + + tm_wheel->model_request = kmemdup(&model_request, + sizeof(struct usb_ctrlrequest), + GFP_KERNEL); + if (!tm_wheel->model_request) { + ret = -ENOMEM; + goto error3; + } + + tm_wheel->response = kzalloc(sizeof(struct tm_wheel_response), GFP_KERNEL); + if (!tm_wheel->response) { + ret = -ENOMEM; + goto error4; + } + + tm_wheel->change_request = kmemdup(&change_request, + sizeof(struct usb_ctrlrequest), + GFP_KERNEL); + if (!tm_wheel->change_request) { + ret = -ENOMEM; + goto error5; + } + + tm_wheel->usb_dev = interface_to_usbdev(to_usb_interface(hdev->dev.parent)); + hid_set_drvdata(hdev, tm_wheel); + + thrustmaster_interrupts(hdev); + + usb_fill_control_urb( + tm_wheel->urb, + tm_wheel->usb_dev, + usb_rcvctrlpipe(tm_wheel->usb_dev, 0), + (char *)tm_wheel->model_request, + tm_wheel->response, + sizeof(struct tm_wheel_response), + thrustmaster_model_handler, + hdev + ); + + ret = usb_submit_urb(tm_wheel->urb, GFP_ATOMIC); + if (ret) { + hid_err(hdev, "Error %d while submitting the URB. I am unable to initialize this wheel...\n", ret); + goto error6; + } + + return ret; + +error6: kfree(tm_wheel->change_request); +error5: kfree(tm_wheel->response); +error4: kfree(tm_wheel->model_request); +error3: usb_free_urb(tm_wheel->urb); +error2: kfree(tm_wheel); +error1: hid_hw_stop(hdev); +error0: + return ret; +} + +static const struct hid_device_id thrustmaster_devices[] = { + { HID_USB_DEVICE(0x044f, 0xb65d)}, + {} +}; + +MODULE_DEVICE_TABLE(hid, thrustmaster_devices); + +static struct hid_driver thrustmaster_driver = { + .name = "hid-thrustmaster", + .id_table = thrustmaster_devices, + .probe = thrustmaster_probe, + .remove = thrustmaster_remove, +}; + +module_hid_driver(thrustmaster_driver); + +MODULE_AUTHOR("Dario Pagani "); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Driver to initialize some steering wheel joysticks from Thrustmaster"); + -- cgit v1.2.3