mirror of https://github.com/F-Stack/f-stack.git
162 lines
5.1 KiB
C
162 lines
5.1 KiB
C
/*
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* ng_ubt_intel.c
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*/
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Attempt to initialize FreeBSD bluetooth stack while Intel Wireless 8260/8265
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* device is in bootloader mode locks the adapter hardly so it requires power
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* on/off cycle to restore. This driver blocks ng_ubt attachment until
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* operational firmware is loaded by iwmbtfw utility thus avoiding the lock up.
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*/
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#include <sys/types.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/mbuf.h>
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#include <sys/module.h>
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#include <sys/systm.h>
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#include <sys/taskqueue.h>
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#include "usbdevs.h"
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <netgraph/ng_message.h>
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#include <netgraph/netgraph.h>
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#include <netgraph/ng_parse.h>
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#include <netgraph/bluetooth/include/ng_bluetooth.h>
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#include <netgraph/bluetooth/include/ng_hci.h>
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#include <netgraph/bluetooth/include/ng_ubt.h>
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#include <netgraph/bluetooth/drivers/ubt/ng_ubt_var.h>
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static device_probe_t ubt_intel_probe;
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/*
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* List of supported bluetooth devices. If you add a new device PID here ensure
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* that it is blacklisted in ng_ubt.c and is supported by iwmbtfw utility.
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*/
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static const STRUCT_USB_HOST_ID ubt_intel_devs[] =
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{
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/* Intel Wireless 8260/8265 and successors */
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{ USB_VPI(USB_VENDOR_INTEL2, 0x0a2b, 0) },
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{ USB_VPI(USB_VENDOR_INTEL2, 0x0aaa, 0) },
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{ USB_VPI(USB_VENDOR_INTEL2, 0x0025, 0) },
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{ USB_VPI(USB_VENDOR_INTEL2, 0x0026, 0) },
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{ USB_VPI(USB_VENDOR_INTEL2, 0x0029, 0) },
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};
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/*
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* Find if the Intel Wireless 8260/8265 device is in bootloader mode or is
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* running operational firmware with checking of 4-th byte "Intel version"
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* HCI command response. The value 0x23 identifies the operational firmware.
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*/
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static bool
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ubt_intel_check_firmware_state(struct usb_device *udev)
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{
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#define UBT_INTEL_VER_LEN 13
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#define UBT_INTEL_HCICMD_TIMEOUT 2000 /* ms */
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struct ubt_hci_event_command_compl *evt;
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uint8_t buf[offsetof(struct ubt_hci_event, data) + UBT_INTEL_VER_LEN];
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static struct ubt_hci_cmd cmd = {
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.opcode = htole16(NG_HCI_OPCODE(NG_HCI_OGF_VENDOR, 0x05)),
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.length = 0,
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};
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usb_error_t error;
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bzero(buf, sizeof(buf));
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evt = (struct ubt_hci_event_command_compl *)buf;
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evt->header.length = UBT_INTEL_VER_LEN;
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error = ubt_do_hci_request(udev, &cmd, evt, UBT_INTEL_HCICMD_TIMEOUT);
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if (error != USB_ERR_NORMAL_COMPLETION)
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return false;
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return (evt->header.event == NG_HCI_EVENT_COMMAND_COMPL &&
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evt->header.length == UBT_INTEL_VER_LEN &&
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evt->data[4] == 0x23);
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}
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/*
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* Probe for a Intel Wireless Bluetooth device.
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*/
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static int
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ubt_intel_probe(device_t dev)
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{
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struct usb_attach_arg *uaa = device_get_ivars(dev);
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int error;
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if (uaa->usb_mode != USB_MODE_HOST)
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return (ENXIO);
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if (uaa->info.bIfaceIndex != 0)
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return (ENXIO);
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error = usbd_lookup_id_by_uaa(ubt_intel_devs, sizeof(ubt_intel_devs),
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uaa);
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if (error != 0)
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return (error);
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if (!ubt_intel_check_firmware_state(uaa->device))
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return (ENXIO);
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return (BUS_PROBE_DEFAULT);
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}
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/*
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* Module interface. Attach and detach methods, netgraph node type
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* registration and PNP string are inherited from ng_ubt.c driver.
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*/
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static device_method_t ubt_intel_methods[] =
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{
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DEVMETHOD(device_probe, ubt_intel_probe),
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DEVMETHOD_END
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};
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static kobj_class_t ubt_baseclasses[] = { &ubt_driver, NULL };
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static driver_t ubt_intel_driver =
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{
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.name = "ubt",
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.methods = ubt_intel_methods,
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.size = sizeof(struct ubt_softc),
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.baseclasses = ubt_baseclasses,
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};
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DRIVER_MODULE(ng_ubt_intel, uhub, ubt_intel_driver, ubt_devclass, 0, 0);
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MODULE_VERSION(ng_ubt_intel, NG_BLUETOOTH_VERSION);
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MODULE_DEPEND(ng_ubt_intel, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
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MODULE_DEPEND(ng_ubt_intel, ng_hci, NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION);
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MODULE_DEPEND(ng_ubt_intel, usb, 1, 1, 1);
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