1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define __BTSTACK_FILE__ "hci_transport_h2_winusb.c" 39 40 /* 41 * hci_transport_usb.c 42 * 43 * HCI Transport API implementation for USB 44 * 45 * Created by Matthias Ringwald on 7/5/09. 46 */ 47 48 // Interface Number - Alternate Setting - suggested Endpoint Address - Endpoint Type - Suggested Max Packet Size 49 // HCI Commands 0 0 0x00 Control 8/16/32/64 50 // HCI Events 0 0 0x81 Interrupt (IN) 16 51 // ACL Data 0 0 0x82 Bulk (IN) 32/64 52 // ACL Data 0 0 0x02 Bulk (OUT) 32/64 53 // SCO Data 0 0 0x83 Isochronous (IN) 54 // SCO Data 0 0 0x03 Isochronous (Out) 55 56 #include <stdio.h> 57 #include <strings.h> 58 #include <string.h> 59 #include <unistd.h> /* UNIX standard function definitions */ 60 #include <sys/types.h> 61 #include <inttypes.h> // to print long long int (aka 64 bit ints) 62 63 #include "btstack_config.h" 64 65 #include "btstack_debug.h" 66 #include "hci.h" 67 #include "hci_transport.h" 68 69 #include <Windows.h> 70 #include <SetupAPI.h> 71 #include <Winusb.h> 72 73 #ifdef ENABLE_SCO_OVER_HCI 74 75 // Isochronous Add-On 76 77 // Function signatures frome https://abi-laboratory.pro/compatibility/Windows_7.0_to_Windows_8.1/x86_64/info/winusb.dll/symbols.html 78 // MSDN documentation has multiple errors (Jan 2017), annotated below 79 80 // As Isochochronous functions are provided by newer versions of ming64, we use a BTstack/BTSTACK prefix to prevent name collisions 81 82 typedef PVOID BTSTACK_WINUSB_ISOCH_BUFFER_HANDLE, *BTSTACK_PWINUSB_ISOCH_BUFFER_HANDLE; 83 84 typedef struct _BTSTACK_WINUSB_PIPE_INFORMATION_EX { 85 USBD_PIPE_TYPE PipeType; 86 UCHAR PipeId; 87 USHORT MaximumPacketSize; 88 UCHAR Interval; 89 ULONG MaximumBytesPerInterval; 90 } BTSTACK_WINUSB_PIPE_INFORMATION_EX, *BTSTACK_PWINUSB_PIPE_INFORMATION_EX; 91 92 typedef WINBOOL (WINAPI * BTstack_WinUsb_QueryPipeEx_t) ( 93 WINUSB_INTERFACE_HANDLE InterfaceHandle, 94 UCHAR AlternateInterfaceNumber, 95 UCHAR PipeIndex, 96 BTSTACK_PWINUSB_PIPE_INFORMATION_EX PipeInformationEx 97 ); 98 typedef WINBOOL (WINAPI * BTstack_WinUsb_RegisterIsochBuffer_t)( 99 WINUSB_INTERFACE_HANDLE InterfaceHandle, 100 UCHAR PipeID, 101 PVOID Buffer, 102 ULONG BufferLength, 103 BTSTACK_PWINUSB_ISOCH_BUFFER_HANDLE BufferHandle 104 ); 105 typedef WINBOOL (WINAPI * BTstack_WinUsb_ReadIsochPipe_t)( 106 BTSTACK_PWINUSB_ISOCH_BUFFER_HANDLE BufferHandle, 107 ULONG Offset, 108 ULONG Length, 109 PULONG FrameNumber, 110 ULONG NumberOfPackets, // MSDN lists PULONG 111 PUSBD_ISO_PACKET_DESCRIPTOR IsoPacketDescriptors, // MSDN lists PULONG 112 LPOVERLAPPED Overlapped 113 ); 114 typedef WINBOOL (WINAPI * BTstack_WinUsb_ReadIsochPipeAsap_t)( 115 BTSTACK_PWINUSB_ISOCH_BUFFER_HANDLE BufferHandle, 116 ULONG Offset, 117 ULONG Length, 118 BOOL ContinueStream, 119 ULONG NumberOfPackets, // MSDN lists PULONG 120 PUSBD_ISO_PACKET_DESCRIPTOR IsoPacketDescriptors, 121 LPOVERLAPPED Overlapped 122 ); 123 typedef WINBOOL (WINAPI * BTstack_WinUsb_WriteIsochPipe_t)( 124 BTSTACK_PWINUSB_ISOCH_BUFFER_HANDLE BufferHandle, 125 ULONG Offset, 126 ULONG Length, 127 PULONG FrameNumber, 128 LPOVERLAPPED Overlapped 129 ); 130 typedef WINBOOL (WINAPI * BTstack_WinUsb_WriteIsochPipeAsap_t)( 131 BTSTACK_PWINUSB_ISOCH_BUFFER_HANDLE BufferHandle, 132 ULONG Offset, 133 ULONG Length, 134 BOOL ContinueStream, 135 LPOVERLAPPED Overlapped 136 ); 137 typedef WINBOOL (WINAPI * BTstack_WinUsb_UnregisterIsochBuffer_t)( 138 BTSTACK_PWINUSB_ISOCH_BUFFER_HANDLE BufferHandle 139 ); 140 typedef WINBOOL (WINAPI * BTstack_WinUsb_GetCurrentFrameNumber_t)( 141 WINUSB_INTERFACE_HANDLE InterfaceHandle, // MSDN lists 'Device handle returned from CreateFile' 142 PULONG CurrentFrameNumber, 143 LARGE_INTEGER *TimeStamp 144 ); 145 146 static BTstack_WinUsb_QueryPipeEx_t BTstack_WinUsb_QueryPipeEx; 147 static BTstack_WinUsb_RegisterIsochBuffer_t BTstack_WinUsb_RegisterIsochBuffer; 148 static BTstack_WinUsb_ReadIsochPipe_t BTstack_WinUsb_ReadIsochPipe; 149 static BTstack_WinUsb_ReadIsochPipeAsap_t BTstack_WinUsb_ReadIsochPipeAsap; 150 static BTstack_WinUsb_WriteIsochPipe_t BTstack_WinUsb_WriteIsochPipe; 151 static BTstack_WinUsb_WriteIsochPipeAsap_t BTstack_WinUsb_WriteIsochPipeAsap; 152 static BTstack_WinUsb_UnregisterIsochBuffer_t BTstack_WinUsb_UnregisterIsochBuffer; 153 static BTstack_WinUsb_GetCurrentFrameNumber_t BTstack_WinUsb_GetCurrentFrameNumber; 154 #endif 155 156 // Doesn't work as expected 157 // #define SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 158 159 // Not tested yet 160 // #define SCHEDULE_SCO_OUT_TRANSFERS_MANUALLY 161 162 // 163 // Bluetooth USB Transport Alternate Settings: 164 // 165 // 0: No active voice channels (for USB compliance) 166 // 1: One 8 kHz voice channel with 8-bit encoding 167 // 2: Two 8 kHz voice channels with 8-bit encoding or one 8 kHz voice channel with 16-bit encoding 168 // 3: Three 8 kHz voice channels with 8-bit encoding 169 // 4: Two 8 kHz voice channels with 16-bit encoding or one 16 kHz voice channel with 16-bit encoding 170 // 5: Three 8 kHz voice channels with 16-bit encoding or one 8 kHz voice channel with 16-bit encoding and one 16 kHz voice channel with 16-bit encoding 171 // --> support only a single SCO connection 172 #define ALT_SETTING (1) 173 174 // alt setting for 1-3 connections and 8/16 bit 175 const int alt_setting_8_bit[] = {1,2,3}; 176 const int alt_setting_16_bit[] = {2,4,5}; 177 178 // for ALT_SETTING >= 1 and 8-bit channel, we need the following isochronous packets 179 // One complete SCO packet with 24 frames every 3 frames (== 3 ms) 180 #define NUM_ISO_PACKETS (3) 181 182 const uint16_t iso_packet_size_for_alt_setting[] = { 183 0, 184 9, 185 17, 186 25, 187 33, 188 49, 189 63, 190 }; 191 192 // 49 bytes is the max usb packet size for alternate setting 5 (Three 8 kHz 16-bit channels or one 8 kHz 16-bit channel and one 16 kHz 16-bit channel) 193 // note: alt setting 6 has max packet size of 63 every 7.5 ms = 472.5 bytes / HCI packet, while max SCO packet has 255 byte payload 194 #define SCO_PACKET_SIZE (49 * NUM_ISO_PACKETS) 195 196 #define ISOC_BUFFERS 8 197 198 // Outgoing SCO packet queue 199 // simplified ring buffer implementation 200 #define SCO_RING_BUFFER_COUNT (20) 201 #define SCO_RING_BUFFER_SIZE (SCO_RING_BUFFER_COUNT * SCO_PACKET_SIZE) 202 203 /** Request type bits of the "bmRequestType" field in control transfers. */ 204 enum usb_request_type { 205 USB_REQUEST_TYPE_STANDARD = (0x00 << 5), 206 USB_REQUEST_TYPE_CLASS = (0x01 << 5), 207 USB_REQUEST_TYPE_VENDOR = (0x02 << 5), 208 }; 209 210 /** Recipient bits of the "bmRequestType" field in control transfers. Values 4 through 31 are reserved. */ 211 enum usb_request_recipient { 212 USB_RECIPIENT_DEVICE = 0x00, 213 USB_RECIPIENT_INTERFACE = 0x01, 214 USB_RECIPIENT_ENDPOINT = 0x02, 215 USB_RECIPIENT_OTHER = 0x03, 216 }; 217 218 // This is the GUID for the USB device class 219 static GUID GUID_DEVINTERFACE_USB_DEVICE = 220 { 0xA5DCBF10L, 0x6530, 0x11D2, { 0x90, 0x1F, 0x00, 0xC0, 0x4F, 0xB9, 0x51, 0xED } }; 221 222 static void usb_dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size); 223 224 static void (*packet_handler)(uint8_t packet_type, uint8_t *packet, uint16_t size) = &usb_dummy_handler; 225 226 // endpoint addresses 227 static int event_in_addr; 228 static int acl_in_addr; 229 static int acl_out_addr; 230 static int sco_in_addr; 231 static int sco_out_addr; 232 233 // 234 static HANDLE usb_device_handle; 235 static WINUSB_INTERFACE_HANDLE usb_interface_0_handle; 236 static WINUSB_INTERFACE_HANDLE usb_interface_1_handle; 237 static OVERLAPPED usb_overlapped_event_in; 238 static OVERLAPPED usb_overlapped_command_out; 239 static OVERLAPPED usb_overlapped_acl_in; 240 static OVERLAPPED usb_overlapped_acl_out; 241 static btstack_data_source_t usb_data_source_event_in; 242 static btstack_data_source_t usb_data_source_command_out; 243 static btstack_data_source_t usb_data_source_acl_in; 244 static btstack_data_source_t usb_data_source_acl_out; 245 246 // 247 static int usb_command_out_active; 248 static int usb_acl_out_active; 249 250 // buffer for HCI Events and ACL Packets 251 static uint8_t hci_event_in_buffer[2 + 255]; 252 static uint8_t hci_acl_in_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + HCI_ACL_BUFFER_SIZE]; 253 254 255 #ifdef ENABLE_SCO_OVER_HCI 256 257 typedef enum { 258 H2_W4_SCO_HEADER = 1, 259 H2_W4_PAYLOAD, 260 } H2_SCO_STATE; 261 262 // SCO Incoming Windows 263 static uint8_t hci_sco_in_buffer[ISOC_BUFFERS * SCO_PACKET_SIZE]; 264 static BTSTACK_WINUSB_ISOCH_BUFFER_HANDLE hci_sco_in_buffer_handle; 265 static USBD_ISO_PACKET_DESCRIPTOR hci_sco_packet_descriptors[ISOC_BUFFERS * NUM_ISO_PACKETS]; 266 static OVERLAPPED usb_overlapped_sco_in[ISOC_BUFFERS]; 267 static int usb_sco_in_expected_transfer; 268 269 // SCO Incoming Run Loop 270 static btstack_data_source_t usb_data_source_sco_in[ISOC_BUFFERS]; 271 272 // SCO Incoming HCI 273 static H2_SCO_STATE sco_state; 274 static uint8_t sco_buffer[SCO_PACKET_SIZE]; 275 static uint16_t sco_read_pos; 276 static uint16_t sco_bytes_to_read; 277 278 // SCO Outgoing Windows 279 static BTSTACK_WINUSB_ISOCH_BUFFER_HANDLE hci_sco_out_buffer_handle; 280 static OVERLAPPED usb_overlapped_sco_out[SCO_RING_BUFFER_COUNT]; 281 static int sco_ring_transfers_active; 282 static int usb_sco_out_expected_transfer; 283 284 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 285 // next tranfer 286 static ULONG sco_next_transfer_at_frame; 287 #endif 288 289 // SCO Outgoing Run Loop 290 static btstack_data_source_t usb_data_source_sco_out[SCO_RING_BUFFER_COUNT]; 291 292 // SCO Outgoing HCI 293 static uint8_t sco_ring_buffer[SCO_RING_BUFFER_SIZE]; 294 static int sco_ring_write; // packet idx 295 296 // SCO Reconfiguration - pause/resume 297 static uint16_t sco_voice_setting; 298 static int sco_num_connections; 299 static int sco_shutdown; 300 301 static uint16_t iso_packet_size; 302 #endif 303 304 // list of known devices, using VendorID/ProductID tuples 305 static const uint16_t known_bluetooth_devices[] = { 306 // DeLOCK Bluetooth 4.0 307 0x0a5c, 0x21e8, 308 // Asus BT400 309 0x0b05, 0x17cb, 310 // BCM20702B0 (Generic USB Detuned Class 1 @ 20 MHz) 311 0x0a5c, 0x22be, 312 }; 313 314 static int num_known_devices = sizeof(known_bluetooth_devices) / sizeof(uint16_t) / 2; 315 316 static int usb_is_known_bluetooth_device(const char * device_path){ 317 int i; 318 for (i=0; i<num_known_devices; i++){ 319 // construct pid/vid substring 320 char substring[20]; 321 sprintf(substring, "vid_%04x&pid_%04x", known_bluetooth_devices[i*2], known_bluetooth_devices[i*2+1]); 322 const char * pos = strstr(device_path, substring); 323 log_info("check %s in %s -> %p", substring, device_path, pos); 324 if (pos){ 325 return 1; 326 } 327 } 328 return 0; 329 } 330 331 #ifdef ENABLE_SCO_OVER_HCI 332 static void sco_ring_init(void){ 333 sco_ring_write = 0; 334 sco_ring_transfers_active = 0; 335 } 336 static int sco_ring_have_space(void){ 337 return sco_ring_transfers_active < SCO_RING_BUFFER_COUNT; 338 } 339 static void usb_sco_register_buffers(void){ 340 BOOL result; 341 result = BTstack_WinUsb_RegisterIsochBuffer(usb_interface_1_handle, sco_in_addr, hci_sco_in_buffer, sizeof(hci_sco_in_buffer), &hci_sco_in_buffer_handle); 342 if (!result) { 343 log_error("usb_sco_register_buffers: register in buffer failed, error %lu", GetLastError()); 344 } 345 log_info("hci_sco_in_buffer_handle %p", hci_sco_in_buffer_handle); 346 347 result = BTstack_WinUsb_RegisterIsochBuffer(usb_interface_1_handle, sco_out_addr, sco_ring_buffer, sizeof(sco_ring_buffer), &hci_sco_out_buffer_handle); 348 if (!result) { 349 log_error("usb_sco_unregister_buffers: register out buffer failed, error %lu", GetLastError()); 350 } 351 log_info("hci_sco_out_buffer_handle %p", hci_sco_out_buffer_handle); 352 } 353 static void usb_sco_unregister_buffers(void){ 354 if (hci_sco_in_buffer_handle){ 355 BTstack_WinUsb_UnregisterIsochBuffer(hci_sco_in_buffer_handle); 356 hci_sco_in_buffer_handle = NULL; 357 } 358 if (hci_sco_out_buffer_handle){ 359 BTstack_WinUsb_UnregisterIsochBuffer(hci_sco_out_buffer_handle); 360 hci_sco_out_buffer_handle = NULL; 361 } 362 } 363 #endif 364 365 static void usb_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){ 366 log_info("registering packet handler"); 367 packet_handler = handler; 368 } 369 370 static void usb_dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 371 } 372 373 static void usb_init(const void *transport_config){ 374 } 375 376 static void usb_free_resources(void){ 377 if (usb_interface_1_handle){ 378 WinUsb_Free(usb_interface_1_handle); 379 usb_interface_1_handle = NULL; 380 } 381 382 if (usb_interface_0_handle){ 383 WinUsb_Free(usb_interface_0_handle); 384 usb_interface_0_handle = NULL; 385 } 386 387 if (usb_device_handle) { 388 CloseHandle(usb_device_handle); 389 usb_device_handle = NULL; 390 } 391 392 #ifdef ENABLE_SCO_OVER_HCI 393 usb_sco_unregister_buffers(); 394 #endif 395 } 396 397 static void usb_submit_event_in_transfer(void){ 398 // submit transfer 399 BOOL result = WinUsb_ReadPipe(usb_interface_0_handle, event_in_addr, hci_event_in_buffer, sizeof(hci_event_in_buffer), NULL, &usb_overlapped_event_in); 400 if (!result) { 401 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 402 } 403 404 // IO_PENDING -> wait for completed 405 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_event_in, DATA_SOURCE_CALLBACK_READ); 406 return; 407 408 exit_on_error: 409 log_error("usb_submit_event_in_transfer: winusb last error %lu", GetLastError()); 410 } 411 412 static void usb_submit_acl_in_transfer(void){ 413 // submit transfer 414 BOOL result = WinUsb_ReadPipe(usb_interface_0_handle, acl_in_addr, hci_acl_in_buffer, sizeof(hci_acl_in_buffer), NULL, &usb_overlapped_acl_in); 415 if (!result) { 416 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 417 } 418 419 // IO_PENDING -> wait for completed 420 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_acl_in, DATA_SOURCE_CALLBACK_READ); 421 return; 422 423 exit_on_error: 424 log_error("usb_submit_acl_in_transfer: winusb last error %lu", GetLastError()); 425 } 426 427 #ifdef ENABLE_SCO_OVER_HCI 428 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 429 430 // frame number gets updated 431 static void usb_submit_sco_in_transfer_at_frame(int i, ULONG * frame_number){ 432 433 if (sco_shutdown){ 434 log_info("USB SCO Shutdown:: usb_submit_sco_in_transfer_at_frame called"); 435 return; 436 } 437 438 LARGE_INTEGER timestamp; 439 ULONG current_frame_number; 440 WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 441 442 ULONG frame_before = *frame_number; 443 444 BOOL result = BTstack_WinUsb_ReadIsochPipe(hci_sco_in_buffer_handle, i * SCO_PACKET_SIZE, iso_packet_size * NUM_ISO_PACKETS, 445 frame_number, NUM_ISO_PACKETS, &hci_sco_packet_descriptors[i * NUM_ISO_PACKETS], &usb_overlapped_sco_in[i]); 446 447 // log_info("BTstack_WinUsb_ReadIsochPipe #%02u: current %lu, planned %lu - buffer %lu", i, current_frame_number, frame_before, frame_before - current_frame_number); 448 449 if (!result) { 450 if (GetLastError() == ERROR_IO_PENDING) { 451 } else { 452 goto exit_on_error; 453 } 454 } 455 456 return; 457 458 exit_on_error: 459 log_error("usb_submit_sco_in_transfer: winusb last error %lu", GetLastError()); 460 } 461 462 #else 463 464 static void usb_submit_sco_in_transfer_asap(int i, int continue_stream){ 465 466 if (sco_shutdown){ 467 log_info("USB SCO Shutdown:: usb_submit_sco_in_transfer_at_frame called"); 468 return; 469 } 470 471 LARGE_INTEGER timestamp; 472 ULONG current_frame_number; 473 BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 474 475 // log_info("usb_submit_sco_in_transfer[%02u]: current frame %lu", i, current_frame_number); 476 477 BOOL result = BTstack_WinUsb_ReadIsochPipeAsap(hci_sco_in_buffer_handle, i * SCO_PACKET_SIZE, iso_packet_size * NUM_ISO_PACKETS, 478 continue_stream, NUM_ISO_PACKETS, &hci_sco_packet_descriptors[i * NUM_ISO_PACKETS], &usb_overlapped_sco_in[i]); 479 480 if (!result) { 481 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 482 } 483 484 return; 485 486 exit_on_error: 487 log_error("usb_submit_sco_in_transfer: winusb last error %lu", GetLastError()); 488 } 489 #endif 490 #endif 491 492 static void usb_process_event_in(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type) { 493 494 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 495 496 DWORD bytes_read; 497 BOOL ok = WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_event_in, &bytes_read, FALSE); 498 if(!ok){ 499 DWORD err = GetLastError(); 500 if (err == ERROR_IO_INCOMPLETE){ 501 // IO_INCOMPLETE -> wait for completed 502 btstack_run_loop_enable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 503 } else { 504 log_error("usb_process_event_in: error reading"); 505 } 506 return; 507 } 508 509 // notify uppper 510 packet_handler(HCI_EVENT_PACKET, hci_event_in_buffer, bytes_read); 511 512 // re-submit transfer 513 usb_submit_event_in_transfer(); 514 } 515 516 static void usb_process_acl_in(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type) { 517 518 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 519 520 DWORD bytes_read; 521 BOOL ok = WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_acl_in, &bytes_read, FALSE); 522 if(!ok){ 523 DWORD err = GetLastError(); 524 if (err == ERROR_IO_INCOMPLETE){ 525 // IO_INCOMPLETE -> wait for completed 526 btstack_run_loop_enable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 527 } else { 528 log_error("usb_process_acl_in: error writing"); 529 } 530 return; 531 } 532 533 // notify uppper 534 packet_handler(HCI_ACL_DATA_PACKET, hci_acl_in_buffer, bytes_read); 535 536 // re-submit transfer 537 usb_submit_acl_in_transfer(); 538 } 539 540 #ifdef ENABLE_SCO_OVER_HCI 541 static void sco_state_machine_init(void){ 542 sco_state = H2_W4_SCO_HEADER; 543 sco_read_pos = 0; 544 sco_bytes_to_read = 3; 545 } 546 547 static void sco_handle_data(uint8_t * buffer, uint16_t size){ 548 // printf("sco_handle_data: state %u, pos %u, to read %u, size %u", sco_state, sco_read_pos, sco_bytes_to_read, size); 549 while (size){ 550 if (size < sco_bytes_to_read){ 551 // just store incomplete data 552 memcpy(&sco_buffer[sco_read_pos], buffer, size); 553 sco_read_pos += size; 554 sco_bytes_to_read -= size; 555 return; 556 } 557 // copy requested data 558 memcpy(&sco_buffer[sco_read_pos], buffer, sco_bytes_to_read); 559 sco_read_pos += sco_bytes_to_read; 560 buffer += sco_bytes_to_read; 561 size -= sco_bytes_to_read; 562 563 // chunk read successfully, next action 564 switch (sco_state){ 565 case H2_W4_SCO_HEADER: 566 sco_state = H2_W4_PAYLOAD; 567 sco_bytes_to_read = sco_buffer[2]; 568 if (sco_bytes_to_read > (sizeof(sco_buffer)-3)){ 569 log_error("sco_handle_data: sco packet len > packet size"); 570 sco_state_machine_init(); 571 } 572 break; 573 case H2_W4_PAYLOAD: 574 // packet complete 575 packet_handler(HCI_SCO_DATA_PACKET, sco_buffer, sco_read_pos); 576 sco_state_machine_init(); 577 break; 578 } 579 } 580 } 581 582 static void usb_process_sco_out(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 583 584 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_WRITE); 585 586 if (sco_shutdown){ 587 log_info("USB SCO Shutdown:: usb_process_sco_out called"); 588 return; 589 } 590 591 // get current frame number 592 ULONG current_frame_number; 593 LARGE_INTEGER timestamp; 594 BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 595 596 // find index 597 int transfer_index; 598 for (transfer_index=0;transfer_index<SCO_RING_BUFFER_COUNT;transfer_index++){ 599 if (ds == &usb_data_source_sco_out[transfer_index]) break; 600 } 601 602 // log_info("usb_process_sco_out[%02u] -- current frame %lu", transfer_index, current_frame_number); 603 604 DWORD bytes_transferred; 605 BOOL ok = WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_sco_out[transfer_index], &bytes_transferred, FALSE); 606 // log_info("usb_process_sco_out_done: #%u result %u, bytes %u, state %u", transfer_index, ok, (int) bytes_transferred, sco_state); 607 if(!ok){ 608 DWORD err = GetLastError(); 609 if (err == ERROR_IO_INCOMPLETE){ 610 // IO_INCOMPLETE -> wait for completed 611 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_out[transfer_index], DATA_SOURCE_CALLBACK_WRITE); 612 return; 613 } 614 log_error("usb_process_sco_out_done[%02u]: error writing %u, Internal %x", transfer_index, (int) err, (int) usb_overlapped_sco_out[transfer_index].Internal); 615 } 616 617 // decrease tab 618 sco_ring_transfers_active--; 619 620 // enable next data source callback 621 if (sco_ring_transfers_active){ 622 // update expected and wait for completion 623 usb_sco_out_expected_transfer = (transfer_index+ 1) % SCO_RING_BUFFER_COUNT; 624 // log_info("usb_process_sco_out_done[%02u]: wait for transfer %02u", transfer_index, usb_sco_out_expected_transfer); 625 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_out[usb_sco_out_expected_transfer], DATA_SOURCE_CALLBACK_WRITE); 626 } 627 628 // log_info("usb_process_sco_out_done: transfers active %u", sco_ring_transfers_active); 629 630 // mark free 631 if (sco_ring_have_space()) { 632 uint8_t event[] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0}; 633 packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event)); 634 } 635 } 636 637 static void usb_process_sco_in(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 638 639 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 640 641 if (sco_shutdown){ 642 log_info("USB SCO Shutdown: usb_process_sco_out called"); 643 return; 644 } 645 646 // find index 647 int i; 648 for (i=0;i<ISOC_BUFFERS;i++){ 649 if (ds == &usb_data_source_sco_in[i]) break; 650 } 651 int transfer_index = i; 652 653 // ULONG current_frame_number; 654 // LARGE_INTEGER timestamp; 655 // BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 656 657 // log_info("usb_process_sco_in[%02u] -- current frame %lu", transfer_index, current_frame_number); 658 659 DWORD bytes_transferred; 660 BOOL ok = WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_sco_in[transfer_index], &bytes_transferred, FALSE); 661 662 if(!ok) { 663 DWORD err = GetLastError(); 664 if (err == ERROR_IO_INCOMPLETE) { 665 // IO_INCOMPLETE -> wait for completed 666 btstack_run_loop_enable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 667 return; 668 } 669 log_error("usb_process_sco_in[%02u]: error reading %u, Internal %x", transfer_index, (int) err, (int) usb_overlapped_sco_out[i].Internal); 670 } 671 672 if (ok){ 673 for (i=0;i<NUM_ISO_PACKETS;i++){ 674 USBD_ISO_PACKET_DESCRIPTOR * packet_descriptor = &hci_sco_packet_descriptors[transfer_index * NUM_ISO_PACKETS + i]; 675 if (packet_descriptor->Length){ 676 uint8_t * iso_data = &hci_sco_in_buffer[transfer_index * SCO_PACKET_SIZE + packet_descriptor->Offset]; 677 uint16_t iso_len = packet_descriptor->Length; 678 sco_handle_data(iso_data, iso_len); 679 } 680 } 681 } 682 683 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 684 usb_submit_sco_in_transfer_at_frame(i, &sco_next_transfer_at_frame); 685 #else 686 usb_submit_sco_in_transfer_asap(transfer_index, 1); 687 #endif 688 // update expected and wait for completion 689 usb_sco_in_expected_transfer = (transfer_index+ 1) % ISOC_BUFFERS; 690 691 // log_info("usb_process_sco_in[%02u]: enable data source %02u", transfer_index, usb_sco_in_expected_transfer); 692 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_in[usb_sco_in_expected_transfer], DATA_SOURCE_CALLBACK_READ); 693 } 694 #endif 695 696 static void usb_process_command_out(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 697 698 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_WRITE); 699 700 // update stata before submitting transfer 701 usb_command_out_active = 0; 702 703 // notify upper stack that provided buffer can be used again 704 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 705 packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event)); 706 } 707 708 static void usb_process_acl_out(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 709 710 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_WRITE); 711 712 // update stata before submitting transfer 713 usb_acl_out_active = 0; 714 715 // notify upper stack that provided buffer can be used again 716 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 717 packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event)); 718 } 719 720 static BOOL usb_scan_for_bluetooth_endpoints(void) { 721 int i; 722 USB_INTERFACE_DESCRIPTOR usb_interface_descriptor; 723 724 // reset 725 event_in_addr = 0; 726 acl_in_addr = 0; 727 acl_out_addr = 0; 728 729 log_info("Scanning USB Entpoints:"); 730 731 // look for Event and ACL pipes on Interface #0 732 BOOL result = WinUsb_QueryInterfaceSettings(usb_interface_0_handle, 0, &usb_interface_descriptor); 733 if (!result) goto exit_on_error; 734 for (i=0;i<usb_interface_descriptor.bNumEndpoints;i++){ 735 WINUSB_PIPE_INFORMATION pipe; 736 result = WinUsb_QueryPipe( 737 usb_interface_0_handle, 738 0, 739 (UCHAR) i, 740 &pipe); 741 if (!result) goto exit_on_error; 742 log_info("Interface #0, Alt #0, Pipe idx #%u: type %u, id 0x%02x, max packet size %u,", 743 i, pipe.PipeType, pipe.PipeId, pipe.MaximumPacketSize); 744 switch (pipe.PipeType){ 745 case USB_ENDPOINT_TYPE_INTERRUPT: 746 if (event_in_addr) continue; 747 event_in_addr = pipe.PipeId; 748 log_info("-> using 0x%2.2X for HCI Events", event_in_addr); 749 break; 750 case USB_ENDPOINT_TYPE_BULK: 751 if (pipe.PipeId & 0x80) { 752 if (acl_in_addr) continue; 753 acl_in_addr = pipe.PipeId; 754 log_info("-> using 0x%2.2X for ACL Data In", acl_in_addr); 755 } else { 756 if (acl_out_addr) continue; 757 acl_out_addr = pipe.PipeId; 758 log_info("-> using 0x%2.2X for ACL Data Out", acl_out_addr); 759 } 760 break; 761 default: 762 break; 763 } 764 } 765 766 #ifdef ENABLE_SCO_OVER_HCI 767 sco_out_addr = 0; 768 sco_in_addr = 0; 769 770 // look for SCO pipes on Interface #1, Alt Setting 1 771 int alt_setting = 1; 772 result = WinUsb_QueryInterfaceSettings(usb_interface_1_handle, alt_setting, &usb_interface_descriptor); 773 if (!result) goto exit_on_error; 774 for (i=0;i<usb_interface_descriptor.bNumEndpoints;i++){ 775 BTSTACK_WINUSB_PIPE_INFORMATION_EX pipe; 776 result = BTstack_WinUsb_QueryPipeEx( 777 usb_interface_1_handle, 778 alt_setting, 779 (UCHAR) i, 780 &pipe); 781 if (!result) goto exit_on_error; 782 log_info("Interface #1, Alt #%u, Pipe idx #%u: type %u, id 0x%02x, max packet size %u, interval %u, max bytes per interval %u", 783 alt_setting, i, pipe.PipeType, pipe.PipeId, pipe.MaximumPacketSize, pipe.Interval, (int) pipe.MaximumBytesPerInterval); 784 switch (pipe.PipeType){ 785 case USB_ENDPOINT_TYPE_ISOCHRONOUS: 786 if (pipe.PipeId & 0x80) { 787 if (sco_in_addr) continue; 788 sco_in_addr = pipe.PipeId; 789 log_info("-> using 0x%2.2X for SCO Data In", sco_in_addr); 790 } else { 791 if (sco_out_addr) continue; 792 sco_out_addr = pipe.PipeId; 793 log_info("-> using 0x%2.2X for SCO Data Out", sco_out_addr); 794 } 795 break; 796 default: 797 break; 798 } 799 } 800 if (!sco_in_addr){ 801 log_error("Couldn't find pipe for SCO IN!"); 802 return FALSE; 803 } 804 if (!sco_out_addr){ 805 log_error("Couldn't find pipe for SCO IN!"); 806 return FALSE; 807 } 808 #endif 809 810 // check if all found 811 if (!event_in_addr){ 812 log_error("Couldn't find pipe for Event IN!"); 813 return FALSE; 814 } 815 if (!acl_in_addr){ 816 log_error("Couldn't find pipe for ACL IN!"); 817 return FALSE; 818 } 819 if (!acl_out_addr){ 820 log_error("Couldn't find pipe for ACL OUT!"); 821 return FALSE; 822 } 823 824 // all clear 825 return TRUE; 826 827 exit_on_error: 828 log_error("usb_scan_for_bluetooth_endpoints: last error %lu", GetLastError()); 829 return FALSE; 830 } 831 832 #ifdef ENABLE_SCO_OVER_HCI 833 834 static int usb_sco_start(void){ 835 printf("usb_sco_start\n"); 836 log_info("usb_sco_start"); 837 838 sco_shutdown = 0; 839 840 sco_state_machine_init(); 841 sco_ring_init(); 842 843 // calc alt setting 844 int alt_setting; 845 if (sco_voice_setting & 0x0020){ 846 // 16-bit PCM 847 alt_setting = alt_setting_16_bit[sco_num_connections-1]; 848 } else { 849 // 8-bit PCM or mSBC 850 alt_setting = alt_setting_8_bit[sco_num_connections-1]; 851 } 852 853 log_info("Switching to setting %u on interface 1..", alt_setting); 854 // WinUsb_SetCurrentAlternateSetting returns TRUE if the operation succeeds. 855 BOOL result = WinUsb_SetCurrentAlternateSetting(usb_interface_1_handle, alt_setting); 856 if (!result) goto exit_on_error; 857 858 // derive iso packet size from alt setting 859 iso_packet_size = iso_packet_size_for_alt_setting[alt_setting]; 860 861 // register isochronous buffer after setting alternate setting 862 usb_sco_register_buffers(); 863 864 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 865 // get current frame number 866 ULONG current_frame_number; 867 LARGE_INTEGER timestamp; 868 BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 869 // plan for next tranfer 870 sco_next_transfer_at_frame = current_frame_number + ISOC_BUFFERS * NUM_ISO_PACKETS; 871 #endif 872 873 int i; 874 for (i=0;i<ISOC_BUFFERS;i++){ 875 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 876 usb_submit_sco_in_transfer_at_frame(i, &sco_next_transfer_at_frame); 877 #else 878 usb_submit_sco_in_transfer_asap(i, 0); 879 #endif 880 } 881 882 usb_sco_in_expected_transfer = 0; 883 884 // only await first transfer to return 885 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_in[usb_sco_in_expected_transfer], DATA_SOURCE_CALLBACK_READ); 886 return 1; 887 888 exit_on_error: 889 log_error("usb_sco_start: last error %lu", GetLastError()); 890 usb_free_resources(); 891 return 0; 892 } 893 894 static void usb_sco_stop(void){ 895 printf("usb_sco_stop\n"); 896 log_info("usb_sco_stop"); 897 898 sco_shutdown = 1; 899 900 // abort SCO transfers 901 WinUsb_AbortPipe(usb_interface_0_handle, sco_in_addr); 902 WinUsb_AbortPipe(usb_interface_0_handle, sco_out_addr); 903 904 // unlock/free SCO buffers 905 usb_sco_unregister_buffers(); 906 907 int alt_setting = 0; 908 log_info("Switching to setting %u on interface 1..", alt_setting); 909 // WinUsb_SetCurrentAlternateSetting returns TRUE if the operation succeeds. 910 WinUsb_SetCurrentAlternateSetting(usb_interface_1_handle, alt_setting); 911 } 912 #endif 913 914 // returns 0 if successful, -1 otherwise 915 static int usb_try_open_device(const char * device_path){ 916 917 // open file 918 usb_device_handle = CreateFile(device_path, 919 GENERIC_WRITE | GENERIC_READ, 920 FILE_SHARE_WRITE | FILE_SHARE_READ, 921 NULL, 922 OPEN_EXISTING, 923 FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, 924 NULL); 925 log_info("Opening USB device: %p", usb_device_handle); 926 if (!usb_device_handle) goto exit_on_error; 927 928 // WinUsb_Initialize returns TRUE if the operation succeed 929 BOOL result = WinUsb_Initialize(usb_device_handle, &usb_interface_0_handle); 930 if (!result) goto exit_on_error; 931 932 // Detect USB Dongle based Class, Subclass, and Protocol 933 // The class code (bDeviceClass) is 0xE0 – Wireless Controller. 934 // The SubClass code (bDeviceSubClass) is 0x01 – RF Controller. 935 // The Protocol code (bDeviceProtocol) is 0x01 – Bluetooth programming. 936 USB_INTERFACE_DESCRIPTOR usb_interface_descriptor; 937 result = WinUsb_QueryInterfaceSettings(usb_interface_0_handle, 0, &usb_interface_descriptor); 938 if (!result) goto exit_on_error; 939 // 940 if (usb_interface_descriptor.bInterfaceClass != 0xe0 || 941 usb_interface_descriptor.bInterfaceSubClass != 0x01 || 942 usb_interface_descriptor.bInterfaceProtocol != 0x01){ 943 944 // check whitelist 945 if (!usb_is_known_bluetooth_device(device_path)){ 946 log_info("Class, Subclass, Protocol does not match Bluetooth device"); 947 usb_free_resources(); 948 return 0; 949 } 950 } 951 952 #ifdef ENABLE_SCO_OVER_HCI 953 log_info("Claiming interface 1..."); 954 // WinUsb_GetAssociatedInterface returns TRUE if the operation succeeds. 955 // We use index 1 - assuming it refers to interface #1 with libusb 956 // A value of 0 indicates the first associated interface, a value of 1 indicates the second associated interface, and so on. 957 result = WinUsb_GetAssociatedInterface(usb_interface_0_handle, 0, &usb_interface_1_handle); 958 if (!result) goto exit_on_error; 959 log_info("Claiming interface 1: success"); 960 #endif 961 962 result = usb_scan_for_bluetooth_endpoints(); 963 if (!result) { 964 log_error("Could not find all Bluetooth Endpoints!"); 965 usb_free_resources(); 966 return 0; 967 } 968 969 #ifdef ENABLE_SCO_OVER_HCI 970 int i; 971 972 memset(hci_sco_packet_descriptors, 0, sizeof(hci_sco_packet_descriptors)); 973 log_info("Size of packet descriptors for SCO IN%u", (int) sizeof(hci_sco_packet_descriptors)); 974 975 // setup async io && btstack handler 976 memset(&usb_overlapped_sco_in, 0, sizeof(usb_overlapped_sco_in)); 977 for (i=0;i<ISOC_BUFFERS;i++){ 978 usb_overlapped_sco_in[i].hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 979 // log_info_hexdump(&usb_overlapped_sco_in[i], sizeof(OVERLAPPED)); 980 // log_info("data source SCO in %u, handle %p", i, usb_overlapped_sco_in[i].hEvent); 981 usb_data_source_sco_in[i].handle = usb_overlapped_sco_in[i].hEvent; 982 btstack_run_loop_set_data_source_handler(&usb_data_source_sco_in[i], &usb_process_sco_in); 983 btstack_run_loop_add_data_source(&usb_data_source_sco_in[i]); 984 } 985 986 memset(&usb_overlapped_sco_out, 0, sizeof(usb_overlapped_sco_out)); 987 for (i=0;i<SCO_RING_BUFFER_COUNT;i++){ 988 usb_overlapped_sco_out[i].hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 989 // log_info("data source SCO out %u, handle %p", i, usb_overlapped_sco_out[i].hEvent); 990 usb_data_source_sco_out[i].handle = usb_overlapped_sco_out[i].hEvent; 991 btstack_run_loop_set_data_source_handler(&usb_data_source_sco_out[i], &usb_process_sco_out); 992 btstack_run_loop_add_data_source(&usb_data_source_sco_out[i]); 993 } 994 #endif 995 996 // setup async io 997 memset(&usb_overlapped_event_in, 0, sizeof(usb_overlapped_event_in)); 998 memset(&usb_overlapped_command_out, 0, sizeof(usb_overlapped_command_out)); 999 memset(&usb_overlapped_acl_out, 0, sizeof(usb_overlapped_acl_out)); 1000 memset(&usb_overlapped_acl_in, 0, sizeof(usb_overlapped_acl_in)); 1001 usb_overlapped_event_in.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 1002 usb_overlapped_command_out.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 1003 usb_overlapped_acl_in.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 1004 usb_overlapped_acl_out.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 1005 1006 // setup btstack data soures 1007 usb_data_source_event_in.handle = usb_overlapped_event_in.hEvent; 1008 btstack_run_loop_set_data_source_handler(&usb_data_source_event_in, &usb_process_event_in); 1009 btstack_run_loop_add_data_source(&usb_data_source_event_in); 1010 1011 usb_data_source_command_out.handle = usb_overlapped_command_out.hEvent; 1012 btstack_run_loop_set_data_source_handler(&usb_data_source_command_out, &usb_process_command_out); 1013 btstack_run_loop_add_data_source(&usb_data_source_command_out); 1014 1015 usb_data_source_acl_in.handle = usb_overlapped_acl_in.hEvent; 1016 btstack_run_loop_set_data_source_handler(&usb_data_source_acl_in, &usb_process_acl_in); 1017 btstack_run_loop_add_data_source(&usb_data_source_acl_in); 1018 1019 usb_data_source_acl_out.handle = usb_overlapped_acl_out.hEvent; 1020 btstack_run_loop_set_data_source_handler(&usb_data_source_acl_out, &usb_process_acl_out); 1021 btstack_run_loop_add_data_source(&usb_data_source_acl_out); 1022 1023 // submit all incoming transfers 1024 usb_submit_event_in_transfer(); 1025 usb_submit_acl_in_transfer(); 1026 return 1; 1027 1028 exit_on_error: 1029 log_error("usb_try_open_device: last error %lu", GetLastError()); 1030 usb_free_resources(); 1031 return 0; 1032 } 1033 1034 #ifdef ENABLE_SCO_OVER_HCI 1035 1036 #define WinUSB_Lookup(fn) do { BTstack_##fn = (BTstack_##fn##_t) GetProcAddress(h, #fn); log_info("%-30s %p", #fn, BTstack_##fn); if (!BTstack_##fn) return FALSE; } while(0) 1037 1038 static BOOL usb_lookup_symbols(void){ 1039 // lookup runtime symbols missing in current mingw64 distribution 1040 HMODULE h = GetModuleHandleA("WinUSB"); 1041 log_info("%-30s %p", "WinUSB", h); 1042 WinUSB_Lookup(WinUsb_QueryPipeEx); 1043 WinUSB_Lookup(WinUsb_RegisterIsochBuffer); 1044 WinUSB_Lookup(WinUsb_ReadIsochPipe); 1045 WinUSB_Lookup(WinUsb_ReadIsochPipeAsap); 1046 WinUSB_Lookup(WinUsb_WriteIsochPipe); 1047 WinUSB_Lookup(WinUsb_WriteIsochPipeAsap); 1048 WinUSB_Lookup(WinUsb_UnregisterIsochBuffer); 1049 WinUSB_Lookup(WinUsb_GetCurrentFrameNumber); 1050 return TRUE; 1051 } 1052 #endif 1053 1054 // returns 0 on success, -1 otherwise 1055 static int usb_open(void){ 1056 1057 int r = -1; 1058 1059 #ifdef ENABLE_SCO_OVER_HCI 1060 BOOL ok = usb_lookup_symbols(); 1061 if (!ok){ 1062 log_error("usb_open: Failed to lookup WinSUB ISOCHRONOUS functions. Please disable ENABLE_SCO_OVER_HCI or use Windows 8.1 or higher"); 1063 return r; 1064 } 1065 sco_state_machine_init(); 1066 sco_ring_init(); 1067 #endif 1068 1069 HDEVINFO hDevInfo; 1070 SP_DEVICE_INTERFACE_DATA DevIntfData; 1071 PSP_DEVICE_INTERFACE_DETAIL_DATA DevIntfDetailData; 1072 SP_DEVINFO_DATA DevData; 1073 1074 DWORD dwSize; 1075 DWORD dwMemberIdx; 1076 1077 // default endpoint addresses 1078 event_in_addr = 0x81; // EP1, IN interrupt 1079 acl_in_addr = 0x82; // EP2, IN bulk 1080 acl_out_addr = 0x02; // EP2, OUT bulk 1081 sco_in_addr = 0x83; // EP3, IN isochronous 1082 sco_out_addr = 0x03; // EP3, OUT isochronous 1083 1084 // We will try to get device information set for all USB devices that have a 1085 // device interface and are currently present on the system (plugged in). 1086 hDevInfo = SetupDiGetClassDevs(&GUID_DEVINTERFACE_USB_DEVICE, NULL, 0, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT); 1087 1088 log_info("usb_open: SetupDiGetClassDevs -> %p", hDevInfo); 1089 if (hDevInfo == INVALID_HANDLE_VALUE) return -1; 1090 1091 // Prepare to enumerate all device interfaces for the device information 1092 // set that we retrieved with SetupDiGetClassDevs(..) 1093 DevIntfData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); 1094 dwMemberIdx = 0; 1095 1096 // Next, we will keep calling this SetupDiEnumDeviceInterfaces(..) until this 1097 // function causes GetLastError() to return ERROR_NO_MORE_ITEMS. With each 1098 // call the dwMemberIdx value needs to be incremented to retrieve the next 1099 // device interface information. 1100 1101 SetupDiEnumDeviceInterfaces(hDevInfo, NULL, (LPGUID) &GUID_DEVINTERFACE_USB_DEVICE, 1102 dwMemberIdx, &DevIntfData); 1103 1104 while(GetLastError() != ERROR_NO_MORE_ITEMS){ 1105 1106 // As a last step we will need to get some more details for each 1107 // of device interface information we are able to retrieve. This 1108 // device interface detail gives us the information we need to identify 1109 // the device (VID/PID), and decide if it's useful to us. It will also 1110 // provide a DEVINFO_DATA structure which we can use to know the serial 1111 // port name for a virtual com port. 1112 1113 DevData.cbSize = sizeof(DevData); 1114 1115 // Get the required buffer size. Call SetupDiGetDeviceInterfaceDetail with 1116 // a NULL DevIntfDetailData pointer, a DevIntfDetailDataSize 1117 // of zero, and a valid RequiredSize variable. In response to such a call, 1118 // this function returns the required buffer size at dwSize. 1119 1120 SetupDiGetDeviceInterfaceDetail( 1121 hDevInfo, &DevIntfData, NULL, 0, &dwSize, NULL); 1122 1123 // Allocate memory for the DeviceInterfaceDetail struct. Don't forget to 1124 // deallocate it later! 1125 DevIntfDetailData = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, dwSize); 1126 DevIntfDetailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); 1127 1128 if (SetupDiGetDeviceInterfaceDetail(hDevInfo, &DevIntfData, 1129 DevIntfDetailData, dwSize, &dwSize, &DevData)) 1130 { 1131 // Finally we can start checking if we've found a useable device, 1132 // by inspecting the DevIntfDetailData->DevicePath variable. 1133 // The DevicePath looks something like this: 1134 // 1135 // \\?\usb#vid_04d8&pid_0033#5&19f2438f&0&2#{a5dcbf10-6530-11d2-901f-00c04fb951ed} 1136 // 1137 1138 log_info("usb_open: Device Path: %s", DevIntfDetailData->DevicePath); 1139 1140 #if 0 1141 // check for hard-coded vendor/product ids 1142 char vid_pid_match[30]; 1143 uint16_t vid = 0x0a12; 1144 uint16_t pid = 0x0001; 1145 sprintf(vid_pid_match, "\\\\?\\usb#vid_%04x&pid_%04x", vid, pid); 1146 if (strncmp(DevIntfDetailData->DevicePath, &vid_pid_match[0], strlen(vid_pid_match)) == 0 ){ 1147 log_info("Matched search string %s", vid_pid_match); 1148 1149 BOOL result = usb_try_open_device(DevIntfDetailData->DevicePath); 1150 if (result){ 1151 log_info("usb_open: Device opened, stop scanning"); 1152 r = 0; 1153 } else { 1154 log_error("usb_open: Device open failed"); 1155 } 1156 } 1157 #endif 1158 1159 // try all devices 1160 BOOL result = usb_try_open_device(DevIntfDetailData->DevicePath); 1161 if (result){ 1162 log_info("usb_open: Device opened, stop scanning"); 1163 r = 0; 1164 } else { 1165 log_error("usb_open: Device open failed"); 1166 } 1167 } 1168 HeapFree(GetProcessHeap(), 0, DevIntfDetailData); 1169 1170 if (r == 0) break; 1171 1172 // Continue looping 1173 SetupDiEnumDeviceInterfaces( 1174 hDevInfo, NULL, &GUID_DEVINTERFACE_USB_DEVICE, ++dwMemberIdx, &DevIntfData); 1175 } 1176 1177 SetupDiDestroyDeviceInfoList(hDevInfo); 1178 1179 log_info("usb_open: done"); 1180 1181 return r; 1182 } 1183 1184 static int usb_close(void){ 1185 1186 // remove data sources 1187 btstack_run_loop_remove_data_source(&usb_data_source_command_out); 1188 btstack_run_loop_remove_data_source(&usb_data_source_event_in); 1189 btstack_run_loop_remove_data_source(&usb_data_source_acl_in); 1190 btstack_run_loop_remove_data_source(&usb_data_source_acl_out); 1191 1192 #ifdef ENABLE_SCO_OVER_HCI 1193 int i; 1194 for (i=0;i<ISOC_BUFFERS;i++){ 1195 btstack_run_loop_remove_data_source(&usb_data_source_sco_in[i]); 1196 } 1197 for (i=0;i<SCO_RING_BUFFER_COUNT;i++){ 1198 btstack_run_loop_remove_data_source(&usb_data_source_sco_out[i]); 1199 } 1200 #endif 1201 1202 // stop transfers 1203 WinUsb_AbortPipe(usb_interface_0_handle, event_in_addr); 1204 WinUsb_AbortPipe(usb_interface_0_handle, acl_in_addr); 1205 WinUsb_AbortPipe(usb_interface_0_handle, acl_out_addr); 1206 #ifdef ENABLE_SCO_OVER_HCI 1207 usb_sco_stop(); 1208 #endif 1209 usb_acl_out_active = 0; 1210 1211 // control transfer cannot be stopped, just wait for completion 1212 if (usb_command_out_active){ 1213 DWORD bytes_transferred; 1214 WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_command_out, &bytes_transferred, TRUE); 1215 usb_command_out_active = 0; 1216 } 1217 1218 // free everything 1219 usb_free_resources(); 1220 return 0; 1221 } 1222 1223 static int usb_can_send_packet_now(uint8_t packet_type){ 1224 // return 0; 1225 switch (packet_type){ 1226 case HCI_COMMAND_DATA_PACKET: 1227 return !usb_command_out_active; 1228 case HCI_ACL_DATA_PACKET: 1229 return !usb_acl_out_active; 1230 #ifdef ENABLE_SCO_OVER_HCI 1231 case HCI_SCO_DATA_PACKET: 1232 // return 0; 1233 return sco_ring_have_space(); 1234 #endif 1235 default: 1236 return 0; 1237 } 1238 } 1239 1240 static int usb_send_cmd_packet(uint8_t *packet, int size){ 1241 1242 // update stata before submitting transfer 1243 usb_command_out_active = 1; 1244 1245 // Start trasnsfer 1246 WINUSB_SETUP_PACKET setup_packet; 1247 memset(&setup_packet, 0, sizeof(setup_packet)); 1248 setup_packet.RequestType = USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE; 1249 setup_packet.Length = sizeof(size); 1250 BOOL result = WinUsb_ControlTransfer(usb_interface_0_handle, setup_packet, packet, size, NULL, &usb_overlapped_command_out); 1251 if (!result) { 1252 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 1253 } 1254 1255 // IO_PENDING -> wait for completed 1256 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_command_out, DATA_SOURCE_CALLBACK_WRITE); 1257 1258 return 0; 1259 1260 exit_on_error: 1261 log_error("winusb: last error %lu", GetLastError()); 1262 return -1; 1263 } 1264 1265 static int usb_send_acl_packet(uint8_t *packet, int size){ 1266 1267 // update stata before submitting transfer 1268 usb_acl_out_active = 1; 1269 1270 // Start trasnsfer 1271 BOOL ok = WinUsb_WritePipe(usb_interface_0_handle, acl_out_addr, packet, size, NULL, &usb_overlapped_acl_out); 1272 if (!ok) { 1273 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 1274 } 1275 1276 // IO_PENDING -> wait for completed 1277 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_acl_out, DATA_SOURCE_CALLBACK_WRITE); 1278 return 0; 1279 1280 exit_on_error: 1281 log_error("winusb: last error %lu", GetLastError()); 1282 return -1; 1283 } 1284 1285 #ifdef ENABLE_SCO_OVER_HCI 1286 static int usb_send_sco_packet(uint8_t *packet, int size){ 1287 1288 if (size > SCO_PACKET_SIZE){ 1289 log_error("usb_send_sco_packet: size %u > SCO_PACKET_SIZE %u", size, SCO_PACKET_SIZE); 1290 return -1; 1291 } 1292 1293 // get current frame number 1294 ULONG current_frame_number; 1295 LARGE_INTEGER timestamp; 1296 BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 1297 1298 // store packet in free slot 1299 int transfer_index = sco_ring_write; 1300 uint8_t * data = &sco_ring_buffer[transfer_index * SCO_PACKET_SIZE]; 1301 memcpy(data, packet, size); 1302 1303 1304 // setup transfer 1305 int continue_stream = sco_ring_transfers_active > 0; 1306 BOOL ok = BTstack_WinUsb_WriteIsochPipeAsap(hci_sco_out_buffer_handle, transfer_index * SCO_PACKET_SIZE, size, continue_stream, &usb_overlapped_sco_out[transfer_index]); 1307 // log_info("usb_send_sco_packet: using slot #%02u, current frame %lu, continue stream %u, ok %u", transfer_index, current_frame_number, continue_stream, ok); 1308 if (!ok) { 1309 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 1310 } 1311 1312 // successful started transfer, enable data source callback if first active transfer 1313 if (sco_ring_transfers_active == 0){ 1314 usb_sco_out_expected_transfer = transfer_index; 1315 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_out[transfer_index], DATA_SOURCE_CALLBACK_WRITE); 1316 } 1317 1318 // mark slot as full 1319 sco_ring_write = (sco_ring_write + 1) % SCO_RING_BUFFER_COUNT; 1320 sco_ring_transfers_active++; 1321 1322 // notify upper stack that provided buffer can be used again 1323 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 1324 packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event)); 1325 1326 // log_info("usb_send_sco_packet: transfers active %u", sco_ring_transfers_active); 1327 1328 // and if we have more space for SCO packets 1329 if (sco_ring_have_space()) { 1330 uint8_t event_sco[] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0}; 1331 packet_handler(HCI_EVENT_PACKET, &event_sco[0], sizeof(event_sco)); 1332 } 1333 return 0; 1334 1335 exit_on_error: 1336 log_error("usb_send_sco_packet: last error %lu", GetLastError()); 1337 return -1; 1338 } 1339 #endif 1340 1341 static int usb_send_packet(uint8_t packet_type, uint8_t * packet, int size){ 1342 switch (packet_type){ 1343 case HCI_COMMAND_DATA_PACKET: 1344 return usb_send_cmd_packet(packet, size); 1345 case HCI_ACL_DATA_PACKET: 1346 return usb_send_acl_packet(packet, size); 1347 #ifdef ENABLE_SCO_OVER_HCI 1348 case HCI_SCO_DATA_PACKET: 1349 return usb_send_sco_packet(packet, size); 1350 #endif 1351 default: 1352 return -1; 1353 } 1354 } 1355 1356 #ifdef ENABLE_SCO_OVER_HCI 1357 static void usb_set_sco_config(uint16_t voice_setting, int num_connections){ 1358 log_info("usb_set_sco_config: voice settings 0x%04x, num connections %u", voice_setting, num_connections); 1359 1360 if (num_connections != sco_num_connections){ 1361 sco_voice_setting = voice_setting; 1362 if (sco_num_connections){ 1363 usb_sco_stop(); 1364 } 1365 sco_num_connections = num_connections; 1366 if (num_connections){ 1367 usb_sco_start(); 1368 } 1369 } 1370 } 1371 #endif 1372 1373 // get usb singleton 1374 static const hci_transport_t hci_transport_usb = { 1375 /* const char * name; */ "H2_WINUSB", 1376 /* void (*init) (const void *transport_config); */ &usb_init, 1377 /* int (*open)(void); */ &usb_open, 1378 /* int (*close)(void); */ &usb_close, 1379 /* void (*register_packet_handler)(void (*handler)(...); */ &usb_register_packet_handler, 1380 /* int (*can_send_packet_now)(uint8_t packet_type); */ &usb_can_send_packet_now, 1381 /* int (*send_packet)(...); */ &usb_send_packet, 1382 /* int (*set_baudrate)(uint32_t baudrate); */ NULL, 1383 /* void (*reset_link)(void); */ NULL, 1384 #ifdef ENABLE_SCO_OVER_HCI 1385 /* void (*set_sco_config)(uint16_t voice_setting, int num_connections); */ usb_set_sco_config, 1386 #else 1387 /* void (*set_sco_config)(uint16_t voice_setting, int num_connections); */ NULL, 1388 #endif 1389 }; 1390 1391 const hci_transport_t * hci_transport_usb_instance(void) { 1392 return &hci_transport_usb; 1393 } 1394