1 /*
2 * ng_ubt_rtl.c
3 */
4
5 /*-
6 * SPDX-License-Identifier: BSD-2-Clause
7 *
8 * Copyright (c) 2019 Vladimir Kondratyev <wulf@FreeBSD.org>
9 * Copyright (c) 2023 Future Crew LLC.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33 /*
34 * Attempt to initialize FreeBSD bluetooth stack while Realtek 87XX/88XX USB
35 * device is in bootloader mode locks the adapter hardly so it requires power
36 * on/off cycle to restore. This driver blocks ng_ubt attachment until
37 * operational firmware is loaded by rtlbtfw utility thus avoiding the lock up.
38 */
39
40 #include <sys/types.h>
41 #include <sys/bus.h>
42 #include <sys/kernel.h>
43 #include <sys/mbuf.h>
44 #include <sys/module.h>
45 #include <sys/systm.h>
46 #include <sys/taskqueue.h>
47
48 #include "usbdevs.h"
49 #include <dev/usb/usb.h>
50 #include <dev/usb/usbdi.h>
51 #define USB_DEBUG_VAR usb_debug
52 #include <dev/usb/usb_debug.h>
53
54 #include <netgraph/ng_message.h>
55 #include <netgraph/netgraph.h>
56 #include <netgraph/ng_parse.h>
57 #include <netgraph/bluetooth/include/ng_bluetooth.h>
58 #include <netgraph/bluetooth/include/ng_hci.h>
59 #include <netgraph/bluetooth/include/ng_ubt.h>
60 #include <netgraph/bluetooth/drivers/ubt/ng_ubt_var.h>
61
62 static device_probe_t ubt_rtl_probe;
63
64 /*
65 * List of supported bluetooth devices. If you add a new device PID here ensure
66 * that it is blacklisted in ng_ubt.c and is supported by rtlbtfw utility.
67 */
68
69 const STRUCT_USB_HOST_ID ubt_rtl_devs[] =
70 {
71 /* Generic Realtek Bluetooth class devices */
72 { USB_VENDOR(USB_VENDOR_REALTEK),
73 USB_IFACE_CLASS(UDCLASS_WIRELESS),
74 USB_IFACE_SUBCLASS(UDSUBCLASS_RF),
75 USB_IFACE_PROTOCOL(UDPROTO_BLUETOOTH) },
76
77 /* Realtek 8821CE Bluetooth devices */
78 { USB_VPI(0x13d3, 0x3529, 0) },
79
80 /* Realtek 8822CE Bluetooth devices */
81 { USB_VPI(0x0bda, 0xb00c, 0) },
82 { USB_VPI(0x0bda, 0xc822, 0) },
83
84 /* Realtek 8822CU Bluetooth devices */
85 { USB_VPI(0x13d3, 0x3549, 0) },
86
87 /* Realtek 8852AE Bluetooth devices */
88 { USB_VPI(0x0bda, 0x2852, 0) },
89 { USB_VPI(0x0bda, 0xc852, 0) },
90 { USB_VPI(0x0bda, 0x385a, 0) },
91 { USB_VPI(0x0bda, 0x4852, 0) },
92 { USB_VPI(0x04c5, 0x165c, 0) },
93 { USB_VPI(0x04ca, 0x4006, 0) },
94 { USB_VPI(0x0cb8, 0xc549, 0) },
95
96 /* Realtek 8852CE Bluetooth devices */
97 { USB_VPI(0x04ca, 0x4007, 0) },
98 { USB_VPI(0x04c5, 0x1675, 0) },
99 { USB_VPI(0x0cb8, 0xc558, 0) },
100 { USB_VPI(0x13d3, 0x3587, 0) },
101 { USB_VPI(0x13d3, 0x3586, 0) },
102 { USB_VPI(0x13d3, 0x3592, 0) },
103
104 /* Realtek 8852BE Bluetooth devices */
105 { USB_VPI(0x0cb8, 0xc559, 0) },
106 { USB_VPI(0x0bda, 0x887b, 0) },
107 { USB_VPI(0x13d3, 0x3571, 0) },
108
109 /* Realtek 8723AE Bluetooth devices */
110 { USB_VPI(0x0930, 0x021d, 0) },
111 { USB_VPI(0x13d3, 0x3394, 0) },
112
113 /* Realtek 8723BE Bluetooth devices */
114 { USB_VPI(0x0489, 0xe085, 0) },
115 { USB_VPI(0x0489, 0xe08b, 0) },
116 { USB_VPI(0x04f2, 0xb49f, 0) },
117 { USB_VPI(0x13d3, 0x3410, 0) },
118 { USB_VPI(0x13d3, 0x3416, 0) },
119 { USB_VPI(0x13d3, 0x3459, 0) },
120 { USB_VPI(0x13d3, 0x3494, 0) },
121
122 /* Realtek 8723BU Bluetooth devices */
123 { USB_VPI(0x7392, 0xa611, 0) },
124
125 /* Realtek 8723DE Bluetooth devices */
126 { USB_VPI(0x0bda, 0xb009, 0) },
127 { USB_VPI(0x2ff8, 0xb011, 0) },
128
129 /* Realtek 8761BUV Bluetooth devices */
130 { USB_VPI(0x2357, 0x0604, 0) },
131 { USB_VPI(0x0b05, 0x190e, 0) },
132 { USB_VPI(0x2550, 0x8761, 0) },
133 { USB_VPI(0x0bda, 0x8771, 0) },
134 { USB_VPI(0x6655, 0x8771, 0) },
135 { USB_VPI(0x7392, 0xc611, 0) },
136 { USB_VPI(0x2b89, 0x8761, 0) },
137
138 /* Realtek 8821AE Bluetooth devices */
139 { USB_VPI(0x0b05, 0x17dc, 0) },
140 { USB_VPI(0x13d3, 0x3414, 0) },
141 { USB_VPI(0x13d3, 0x3458, 0) },
142 { USB_VPI(0x13d3, 0x3461, 0) },
143 { USB_VPI(0x13d3, 0x3462, 0) },
144
145 /* Realtek 8822BE Bluetooth devices */
146 { USB_VPI(0x13d3, 0x3526, 0) },
147 { USB_VPI(0x0b05, 0x185c, 0) },
148
149 /* Realtek 8822CE Bluetooth devices */
150 { USB_VPI(0x04ca, 0x4005, 0) },
151 { USB_VPI(0x04c5, 0x161f, 0) },
152 { USB_VPI(0x0b05, 0x18ef, 0) },
153 { USB_VPI(0x13d3, 0x3548, 0) },
154 { USB_VPI(0x13d3, 0x3549, 0) },
155 { USB_VPI(0x13d3, 0x3553, 0) },
156 { USB_VPI(0x13d3, 0x3555, 0) },
157 { USB_VPI(0x2ff8, 0x3051, 0) },
158 { USB_VPI(0x1358, 0xc123, 0) },
159 { USB_VPI(0x0bda, 0xc123, 0) },
160 { USB_VPI(0x0cb5, 0xc547, 0) },
161 };
162 const size_t ubt_rtl_devs_sizeof = sizeof(ubt_rtl_devs);
163
164 /*
165 * List of lmp_subversion values that correspond to Realtek firmwares
166 * incompatible with ng_ubt driver. Alternative firmware for these devices
167 * has to be loaded with rtlbtfw utility. That will trigger lmp_subversion
168 * change to different value.
169 */
170 static const uint16_t ubt_rtl_lmp_subvers[] = {
171 0x8703, 0x1200, 0x8723, 0x8821,
172 0x8761, 0x8822, 0x8852, 0x8851,
173 };
174
175 /*
176 * Execute generic HCI command and return response in provided buffer.
177 */
178
179 static usb_error_t
ubt_rtl_do_hci_request(struct usb_device * udev,uint16_t opcode,void * resp,uint8_t resp_len)180 ubt_rtl_do_hci_request(struct usb_device *udev, uint16_t opcode,
181 void *resp, uint8_t resp_len)
182 {
183 #define UBT_RTL_HCICMD_TIMEOUT 2000 /* ms */
184 struct ubt_hci_event_command_compl *evt;
185 struct ubt_hci_cmd cmd;
186 usb_error_t error;
187
188 memset(&cmd, 0, sizeof(cmd));
189 cmd.opcode = htole16(opcode);
190 evt = malloc(offsetof(struct ubt_hci_event_command_compl, data) +
191 resp_len, M_TEMP, M_ZERO | M_WAITOK);
192 evt->header.event = NG_HCI_EVENT_COMMAND_COMPL;
193 evt->header.length = resp_len + UBT_HCI_EVENT_COMPL_HEAD_SIZE;
194
195 error = ubt_do_hci_request(udev, &cmd, evt, UBT_RTL_HCICMD_TIMEOUT);
196 if (error != USB_ERR_NORMAL_COMPLETION)
197 goto exit;
198
199 if (evt->header.event == NG_HCI_EVENT_COMMAND_COMPL &&
200 evt->header.length == resp_len + UBT_HCI_EVENT_COMPL_HEAD_SIZE)
201 memcpy(resp, evt->data, resp_len);
202 else
203 error = USB_ERR_INVAL;
204 exit:
205 free(evt, M_TEMP);
206 return (error);
207 }
208
209 /*
210 * Probe for a Realtek 87XX/88XX USB Bluetooth device.
211 */
212
213 static int
ubt_rtl_probe(device_t dev)214 ubt_rtl_probe(device_t dev)
215 {
216 struct usb_attach_arg *uaa = device_get_ivars(dev);
217 ng_hci_read_local_ver_rp ver;
218 unsigned int i;
219 int error;
220
221 if (uaa->usb_mode != USB_MODE_HOST)
222 return (ENXIO);
223
224 if (uaa->info.bIfaceIndex != 0)
225 return (ENXIO);
226
227 error = usbd_lookup_id_by_uaa(ubt_rtl_devs, sizeof(ubt_rtl_devs), uaa);
228 if (error != 0)
229 return (error);
230
231 if (ubt_rtl_do_hci_request(uaa->device,
232 NG_HCI_OPCODE(NG_HCI_OGF_INFO, NG_HCI_OCF_READ_LOCAL_VER),
233 &ver, sizeof(ver)) != USB_ERR_NORMAL_COMPLETION)
234 return (ENXIO);
235
236 DPRINTFN(2, "hci_version 0x%02x\n", ver.hci_version);
237 DPRINTFN(2, "hci_revision 0x%04x\n", le16toh(ver.hci_revision));
238 DPRINTFN(2, "lmp_version 0x%02x\n", ver.lmp_version);
239 DPRINTFN(2, "lmp_subversion 0x%04x\n", le16toh(ver.lmp_subversion));
240
241 for (i = 0; i < nitems(ubt_rtl_lmp_subvers); i++)
242 if (le16toh(ver.lmp_subversion) == ubt_rtl_lmp_subvers[i])
243 return (ENXIO);
244
245 return (BUS_PROBE_DEFAULT);
246 }
247
248 /*
249 * Module interface. Attach and detach methods, netgraph node type
250 * registration and PNP string are inherited from ng_ubt.c driver.
251 */
252
253 static device_method_t ubt_rtl_methods[] =
254 {
255 DEVMETHOD(device_probe, ubt_rtl_probe),
256 DEVMETHOD_END
257 };
258
259 DEFINE_CLASS_1(ubt, ubt_rtl_driver, ubt_rtl_methods,
260 sizeof(struct ubt_softc), ubt_driver);
261 DRIVER_MODULE(ng_ubt_rtl, uhub, ubt_rtl_driver, 0, 0);
262 MODULE_VERSION(ng_ubt_rtl, NG_BLUETOOTH_VERSION);
263 MODULE_DEPEND(ng_ubt_rtl, netgraph, NG_ABI_VERSION, NG_ABI_VERSION, NG_ABI_VERSION);
264 MODULE_DEPEND(ng_ubt_rtl, ng_hci, NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION, NG_BLUETOOTH_VERSION);
265 MODULE_DEPEND(ng_ubt_rtl, usb, 1, 1, 1);
266