1 /* 2 * ng_ubt_intel.c 3 */ 4 5 /*- 6 * SPDX-License-Identifier: BSD-2-Clause 7 * 8 * Copyright (c) 2019, 2021 Vladimir Kondratyev <wulf@FreeBSD.org> 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD$ 32 */ 33 34 /* 35 * Attempt to initialize FreeBSD bluetooth stack while Intel Wireless 8260/8265 36 * device is in bootloader mode locks the adapter hardly so it requires power 37 * on/off cycle to restore. This driver blocks ng_ubt attachment until 38 * operational firmware is loaded by iwmbtfw utility thus avoiding the lock up. 39 */ 40 41 #include <sys/types.h> 42 #include <sys/bus.h> 43 #include <sys/kernel.h> 44 #include <sys/mbuf.h> 45 #include <sys/module.h> 46 #include <sys/systm.h> 47 #include <sys/taskqueue.h> 48 49 #include "usbdevs.h" 50 #include <dev/usb/usb.h> 51 #include <dev/usb/usbdi.h> 52 53 #include <netgraph/ng_message.h> 54 #include <netgraph/netgraph.h> 55 #include <netgraph/ng_parse.h> 56 #include <netgraph/bluetooth/include/ng_bluetooth.h> 57 #include <netgraph/bluetooth/include/ng_hci.h> 58 #include <netgraph/bluetooth/include/ng_ubt.h> 59 #include <netgraph/bluetooth/drivers/ubt/ng_ubt_var.h> 60 61 enum { 62 UBT_INTEL_DEVICE_7260, 63 UBT_INTEL_DEVICE_8260, 64 }; 65 66 struct ubt_intel_version_rp { 67 uint8_t status; 68 uint8_t hw_platform; 69 uint8_t hw_variant; 70 uint8_t hw_revision; 71 uint8_t fw_variant; 72 uint8_t fw_revision; 73 uint8_t fw_build_num; 74 uint8_t fw_build_ww; 75 uint8_t fw_build_yy; 76 uint8_t fw_patch_num; 77 } __attribute__ ((packed)); 78 79 static device_probe_t ubt_intel_probe; 80 81 /* 82 * List of supported bluetooth devices. If you add a new device PID here ensure 83 * that it is blacklisted in ng_ubt.c and is supported by iwmbtfw utility. 84 */ 85 86 static const STRUCT_USB_HOST_ID ubt_intel_devs[] = 87 { 88 /* Intel Wireless 7260/7265 and successors */ 89 { USB_VPI(USB_VENDOR_INTEL2, 0x07dc, UBT_INTEL_DEVICE_7260) }, 90 { USB_VPI(USB_VENDOR_INTEL2, 0x0a2a, UBT_INTEL_DEVICE_7260) }, 91 { USB_VPI(USB_VENDOR_INTEL2, 0x0aa7, UBT_INTEL_DEVICE_7260) }, 92 /* Intel Wireless 8260/8265 and successors */ 93 { USB_VPI(USB_VENDOR_INTEL2, 0x0a2b, UBT_INTEL_DEVICE_8260) }, 94 { USB_VPI(USB_VENDOR_INTEL2, 0x0aaa, UBT_INTEL_DEVICE_8260) }, 95 { USB_VPI(USB_VENDOR_INTEL2, 0x0025, UBT_INTEL_DEVICE_8260) }, 96 { USB_VPI(USB_VENDOR_INTEL2, 0x0026, UBT_INTEL_DEVICE_8260) }, 97 { USB_VPI(USB_VENDOR_INTEL2, 0x0029, UBT_INTEL_DEVICE_8260) }, 98 }; 99 100 /* 101 * Execute generic HCI command and return response in provided buffer. 102 */ 103 104 static usb_error_t 105 ubt_intel_do_hci_request(struct usb_device *udev, uint16_t opcode, 106 void *resp, uint8_t resp_len) 107 { 108 #define UBT_INTEL_HCICMD_TIMEOUT 2000 /* ms */ 109 struct ubt_hci_event_command_compl *evt; 110 struct ubt_hci_cmd cmd; 111 usb_error_t error; 112 113 memset(&cmd, 0, sizeof(cmd)); 114 cmd.opcode = htole16(opcode); 115 evt = malloc(offsetof(struct ubt_hci_event_command_compl, data) + 116 resp_len, M_TEMP, M_ZERO | M_WAITOK); 117 evt->header.length = resp_len + UBT_HCI_EVENT_COMPL_HEAD_SIZE; 118 119 error = ubt_do_hci_request(udev, &cmd, evt, UBT_INTEL_HCICMD_TIMEOUT); 120 if (error != USB_ERR_NORMAL_COMPLETION) 121 goto exit; 122 123 if (evt->header.event == NG_HCI_EVENT_COMMAND_COMPL && 124 evt->header.length == resp_len + UBT_HCI_EVENT_COMPL_HEAD_SIZE) 125 memcpy(resp, evt->data, resp_len); 126 else 127 error = USB_ERR_INVAL; 128 exit: 129 free(evt, M_TEMP); 130 return (error); 131 } 132 133 /* 134 * Probe for a Intel Wireless Bluetooth device. 135 */ 136 137 static int 138 ubt_intel_probe(device_t dev) 139 { 140 struct usb_attach_arg *uaa = device_get_ivars(dev); 141 struct ubt_intel_version_rp version; 142 ng_hci_reset_rp reset; 143 int error; 144 145 if (uaa->usb_mode != USB_MODE_HOST) 146 return (ENXIO); 147 148 if (uaa->info.bIfaceIndex != 0) 149 return (ENXIO); 150 151 error = usbd_lookup_id_by_uaa(ubt_intel_devs, sizeof(ubt_intel_devs), 152 uaa); 153 if (error != 0) 154 return (error); 155 156 switch (USB_GET_DRIVER_INFO(uaa)) { 157 case UBT_INTEL_DEVICE_7260: 158 /* 159 * Send HCI Reset command to workaround controller bug with the 160 * first HCI command sent to it returning number of completed 161 * commands as zero. This will reset the number of completed 162 * commands and allow further normal command processing. 163 */ 164 if (ubt_intel_do_hci_request(uaa->device, 165 NG_HCI_OPCODE(NG_HCI_OGF_HC_BASEBAND, NG_HCI_OCF_RESET), 166 &reset, sizeof(reset)) != USB_ERR_NORMAL_COMPLETION) 167 return (ENXIO); 168 if (reset.status != 0) 169 return (ENXIO); 170 /* 171 * fw_patch_num indicates the version of patch the device 172 * currently have. If there is no patch data in the device, 173 * it is always 0x00 and we need to patch the device again. 174 */ 175 if (ubt_intel_do_hci_request(uaa->device, 176 NG_HCI_OPCODE(NG_HCI_OGF_VENDOR, 0x05), 177 &version, sizeof(version)) != USB_ERR_NORMAL_COMPLETION) 178 return (ENXIO); 179 if (version.fw_patch_num == 0) 180 return (ENXIO); 181 break; 182 183 case UBT_INTEL_DEVICE_8260: 184 /* 185 * Find if the Intel Wireless 8260/8265 device is in bootloader 186 * mode or is running operational firmware with checking of 187 * variant byte of "Intel version" HCI command response. 188 * The value 0x23 identifies the operational firmware. 189 */ 190 if (ubt_intel_do_hci_request(uaa->device, 191 NG_HCI_OPCODE(NG_HCI_OGF_VENDOR, 0x05), 192 &version, sizeof(version)) != USB_ERR_NORMAL_COMPLETION) 193 return (ENXIO); 194 if (version.fw_variant != 0x23) 195 return (ENXIO); 196 break; 197 198 default: 199 KASSERT(0 == 1, ("Unknown DRIVER_INFO")); 200 } 201 202 return (BUS_PROBE_DEFAULT); 203 } 204 205 /* 206 * Module interface. Attach and detach methods, netgraph node type 207 * registration and PNP string are inherited from ng_ubt.c driver. 208 */ 209 210 static device_method_t ubt_intel_methods[] = 211 { 212 DEVMETHOD(device_probe, ubt_intel_probe), 213 DEVMETHOD_END 214 }; 215 216 DEFINE_CLASS_1(ubt, ubt_intel_driver, ubt_intel_methods, 217 sizeof(struct ubt_softc), ubt_driver); 218 DRIVER_MODULE(ng_ubt_intel, uhub, ubt_intel_driver, 0, 0); 219 MODULE_VERSION(ng_ubt_intel, NG_BLUETOOTH_VERSION); 220 MODULE_DEPEND(ng_ubt_intel, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION); 221 MODULE_DEPEND(ng_ubt_intel, ng_hci, NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION); 222 MODULE_DEPEND(ng_ubt_intel, usb, 1, 1, 1); 223