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 }; 311 312 static int num_known_devices = sizeof(known_bluetooth_devices) / sizeof(uint16_t) / 2; 313 314 static int usb_is_known_bluetooth_device(const char * device_path){ 315 int i; 316 for (i=0; i<num_known_devices; i++){ 317 // construct pid/vid substring 318 char substring[20]; 319 sprintf(substring, "vid_%04x&pid_%04x", known_bluetooth_devices[i*2], known_bluetooth_devices[i*2+1]); 320 const char * pos = strstr(device_path, substring); 321 log_info("check %s in %s -> %p", substring, device_path, pos); 322 if (pos){ 323 return 1; 324 } 325 } 326 return 0; 327 } 328 329 #ifdef ENABLE_SCO_OVER_HCI 330 static void sco_ring_init(void){ 331 sco_ring_write = 0; 332 sco_ring_transfers_active = 0; 333 } 334 static int sco_ring_have_space(void){ 335 return sco_ring_transfers_active < SCO_RING_BUFFER_COUNT; 336 } 337 static void usb_sco_register_buffers(void){ 338 BOOL result; 339 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); 340 if (!result) { 341 log_error("usb_sco_register_buffers: register in buffer failed, error %lu", GetLastError()); 342 } 343 log_info("hci_sco_in_buffer_handle %p", hci_sco_in_buffer_handle); 344 345 result = BTstack_WinUsb_RegisterIsochBuffer(usb_interface_1_handle, sco_out_addr, sco_ring_buffer, sizeof(sco_ring_buffer), &hci_sco_out_buffer_handle); 346 if (!result) { 347 log_error("usb_sco_unregister_buffers: register out buffer failed, error %lu", GetLastError()); 348 } 349 log_info("hci_sco_out_buffer_handle %p", hci_sco_out_buffer_handle); 350 } 351 static void usb_sco_unregister_buffers(void){ 352 if (hci_sco_in_buffer_handle){ 353 BTstack_WinUsb_UnregisterIsochBuffer(hci_sco_in_buffer_handle); 354 hci_sco_in_buffer_handle = NULL; 355 } 356 if (hci_sco_out_buffer_handle){ 357 BTstack_WinUsb_UnregisterIsochBuffer(hci_sco_out_buffer_handle); 358 hci_sco_out_buffer_handle = NULL; 359 } 360 } 361 #endif 362 363 static void usb_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){ 364 log_info("registering packet handler"); 365 packet_handler = handler; 366 } 367 368 static void usb_dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 369 } 370 371 static void usb_init(const void *transport_config){ 372 } 373 374 static void usb_free_resources(void){ 375 if (usb_interface_1_handle){ 376 WinUsb_Free(usb_interface_1_handle); 377 usb_interface_1_handle = NULL; 378 } 379 380 if (usb_interface_0_handle){ 381 WinUsb_Free(usb_interface_0_handle); 382 usb_interface_0_handle = NULL; 383 } 384 385 if (usb_device_handle) { 386 CloseHandle(usb_device_handle); 387 usb_device_handle = NULL; 388 } 389 390 #ifdef ENABLE_SCO_OVER_HCI 391 usb_sco_unregister_buffers(); 392 #endif 393 } 394 395 static void usb_submit_event_in_transfer(void){ 396 // submit transfer 397 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); 398 if (!result) { 399 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 400 } 401 402 // IO_PENDING -> wait for completed 403 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_event_in, DATA_SOURCE_CALLBACK_READ); 404 return; 405 406 exit_on_error: 407 log_error("usb_submit_event_in_transfer: winusb last error %lu", GetLastError()); 408 } 409 410 static void usb_submit_acl_in_transfer(void){ 411 // submit transfer 412 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); 413 if (!result) { 414 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 415 } 416 417 // IO_PENDING -> wait for completed 418 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_acl_in, DATA_SOURCE_CALLBACK_READ); 419 return; 420 421 exit_on_error: 422 log_error("usb_submit_acl_in_transfer: winusb last error %lu", GetLastError()); 423 } 424 425 #ifdef ENABLE_SCO_OVER_HCI 426 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 427 428 // frame number gets updated 429 static void usb_submit_sco_in_transfer_at_frame(int i, ULONG * frame_number){ 430 431 if (sco_shutdown){ 432 log_info("USB SCO Shutdown:: usb_submit_sco_in_transfer_at_frame called"); 433 return; 434 } 435 436 LARGE_INTEGER timestamp; 437 ULONG current_frame_number; 438 WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 439 440 ULONG frame_before = *frame_number; 441 442 BOOL result = BTstack_WinUsb_ReadIsochPipe(hci_sco_in_buffer_handle, i * SCO_PACKET_SIZE, iso_packet_size * NUM_ISO_PACKETS, 443 frame_number, NUM_ISO_PACKETS, &hci_sco_packet_descriptors[i * NUM_ISO_PACKETS], &usb_overlapped_sco_in[i]); 444 445 // log_info("BTstack_WinUsb_ReadIsochPipe #%02u: current %lu, planned %lu - buffer %lu", i, current_frame_number, frame_before, frame_before - current_frame_number); 446 447 if (!result) { 448 if (GetLastError() == ERROR_IO_PENDING) { 449 } else { 450 goto exit_on_error; 451 } 452 } 453 454 return; 455 456 exit_on_error: 457 log_error("usb_submit_sco_in_transfer: winusb last error %lu", GetLastError()); 458 } 459 460 #else 461 462 static void usb_submit_sco_in_transfer_asap(int i, int continue_stream){ 463 464 if (sco_shutdown){ 465 log_info("USB SCO Shutdown:: usb_submit_sco_in_transfer_at_frame called"); 466 return; 467 } 468 469 LARGE_INTEGER timestamp; 470 ULONG current_frame_number; 471 BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 472 473 // log_info("usb_submit_sco_in_transfer[%02u]: current frame %lu", i, current_frame_number); 474 475 BOOL result = BTstack_WinUsb_ReadIsochPipeAsap(hci_sco_in_buffer_handle, i * SCO_PACKET_SIZE, iso_packet_size * NUM_ISO_PACKETS, 476 continue_stream, NUM_ISO_PACKETS, &hci_sco_packet_descriptors[i * NUM_ISO_PACKETS], &usb_overlapped_sco_in[i]); 477 478 if (!result) { 479 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 480 } 481 482 return; 483 484 exit_on_error: 485 log_error("usb_submit_sco_in_transfer: winusb last error %lu", GetLastError()); 486 } 487 #endif 488 #endif 489 490 static void usb_process_event_in(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type) { 491 492 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 493 494 DWORD bytes_read; 495 BOOL ok = WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_event_in, &bytes_read, FALSE); 496 if(!ok){ 497 DWORD err = GetLastError(); 498 if (err == ERROR_IO_INCOMPLETE){ 499 // IO_INCOMPLETE -> wait for completed 500 btstack_run_loop_enable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 501 } else { 502 log_error("usb_process_event_in: error reading"); 503 } 504 return; 505 } 506 507 // notify uppper 508 packet_handler(HCI_EVENT_PACKET, hci_event_in_buffer, bytes_read); 509 510 // re-submit transfer 511 usb_submit_event_in_transfer(); 512 } 513 514 static void usb_process_acl_in(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type) { 515 516 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 517 518 DWORD bytes_read; 519 BOOL ok = WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_acl_in, &bytes_read, FALSE); 520 if(!ok){ 521 DWORD err = GetLastError(); 522 if (err == ERROR_IO_INCOMPLETE){ 523 // IO_INCOMPLETE -> wait for completed 524 btstack_run_loop_enable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 525 } else { 526 log_error("usb_process_acl_in: error writing"); 527 } 528 return; 529 } 530 531 // notify uppper 532 packet_handler(HCI_ACL_DATA_PACKET, hci_acl_in_buffer, bytes_read); 533 534 // re-submit transfer 535 usb_submit_acl_in_transfer(); 536 } 537 538 #ifdef ENABLE_SCO_OVER_HCI 539 static void sco_state_machine_init(void){ 540 sco_state = H2_W4_SCO_HEADER; 541 sco_read_pos = 0; 542 sco_bytes_to_read = 3; 543 } 544 545 static void sco_handle_data(uint8_t * buffer, uint16_t size){ 546 // printf("sco_handle_data: state %u, pos %u, to read %u, size %u", sco_state, sco_read_pos, sco_bytes_to_read, size); 547 while (size){ 548 if (size < sco_bytes_to_read){ 549 // just store incomplete data 550 memcpy(&sco_buffer[sco_read_pos], buffer, size); 551 sco_read_pos += size; 552 sco_bytes_to_read -= size; 553 return; 554 } 555 // copy requested data 556 memcpy(&sco_buffer[sco_read_pos], buffer, sco_bytes_to_read); 557 sco_read_pos += sco_bytes_to_read; 558 buffer += sco_bytes_to_read; 559 size -= sco_bytes_to_read; 560 561 // chunk read successfully, next action 562 switch (sco_state){ 563 case H2_W4_SCO_HEADER: 564 sco_state = H2_W4_PAYLOAD; 565 sco_bytes_to_read = sco_buffer[2]; 566 if (sco_bytes_to_read > (sizeof(sco_buffer)-3)){ 567 log_error("sco_handle_data: sco packet len > packet size"); 568 sco_state_machine_init(); 569 } 570 break; 571 case H2_W4_PAYLOAD: 572 // packet complete 573 packet_handler(HCI_SCO_DATA_PACKET, sco_buffer, sco_read_pos); 574 sco_state_machine_init(); 575 break; 576 } 577 } 578 } 579 580 static void usb_process_sco_out(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 581 582 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_WRITE); 583 584 if (sco_shutdown){ 585 log_info("USB SCO Shutdown:: usb_process_sco_out called"); 586 return; 587 } 588 589 // get current frame number 590 ULONG current_frame_number; 591 LARGE_INTEGER timestamp; 592 BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 593 594 // find index 595 int transfer_index; 596 for (transfer_index=0;transfer_index<SCO_RING_BUFFER_COUNT;transfer_index++){ 597 if (ds == &usb_data_source_sco_out[transfer_index]) break; 598 } 599 600 // log_info("usb_process_sco_out[%02u] -- current frame %lu", transfer_index, current_frame_number); 601 602 DWORD bytes_transferred; 603 BOOL ok = WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_sco_out[transfer_index], &bytes_transferred, FALSE); 604 // log_info("usb_process_sco_out_done: #%u result %u, bytes %u, state %u", transfer_index, ok, (int) bytes_transferred, sco_state); 605 if(!ok){ 606 DWORD err = GetLastError(); 607 if (err == ERROR_IO_INCOMPLETE){ 608 // IO_INCOMPLETE -> wait for completed 609 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_out[transfer_index], DATA_SOURCE_CALLBACK_WRITE); 610 return; 611 } 612 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); 613 } 614 615 // decrease tab 616 sco_ring_transfers_active--; 617 618 // enable next data source callback 619 if (sco_ring_transfers_active){ 620 // update expected and wait for completion 621 usb_sco_out_expected_transfer = (transfer_index+ 1) % SCO_RING_BUFFER_COUNT; 622 // log_info("usb_process_sco_out_done[%02u]: wait for transfer %02u", transfer_index, usb_sco_out_expected_transfer); 623 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_out[usb_sco_out_expected_transfer], DATA_SOURCE_CALLBACK_WRITE); 624 } 625 626 // log_info("usb_process_sco_out_done: transfers active %u", sco_ring_transfers_active); 627 628 // mark free 629 if (sco_ring_have_space()) { 630 uint8_t event[] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0}; 631 packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event)); 632 } 633 } 634 635 static void usb_process_sco_in(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 636 637 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 638 639 if (sco_shutdown){ 640 log_info("USB SCO Shutdown: usb_process_sco_out called"); 641 return; 642 } 643 644 // find index 645 int i; 646 for (i=0;i<ISOC_BUFFERS;i++){ 647 if (ds == &usb_data_source_sco_in[i]) break; 648 } 649 int transfer_index = i; 650 651 // ULONG current_frame_number; 652 // LARGE_INTEGER timestamp; 653 // BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 654 655 // log_info("usb_process_sco_in[%02u] -- current frame %lu", transfer_index, current_frame_number); 656 657 DWORD bytes_transferred; 658 BOOL ok = WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_sco_in[transfer_index], &bytes_transferred, FALSE); 659 660 if(!ok) { 661 DWORD err = GetLastError(); 662 if (err == ERROR_IO_INCOMPLETE) { 663 // IO_INCOMPLETE -> wait for completed 664 btstack_run_loop_enable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_READ); 665 return; 666 } 667 log_error("usb_process_sco_in[%02u]: error reading %u, Internal %x", transfer_index, (int) err, (int) usb_overlapped_sco_out[i].Internal); 668 } 669 670 if (ok){ 671 for (i=0;i<NUM_ISO_PACKETS;i++){ 672 USBD_ISO_PACKET_DESCRIPTOR * packet_descriptor = &hci_sco_packet_descriptors[transfer_index * NUM_ISO_PACKETS + i]; 673 if (packet_descriptor->Length){ 674 uint8_t * iso_data = &hci_sco_in_buffer[transfer_index * SCO_PACKET_SIZE + packet_descriptor->Offset]; 675 uint16_t iso_len = packet_descriptor->Length; 676 sco_handle_data(iso_data, iso_len); 677 } 678 } 679 } 680 681 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 682 usb_submit_sco_in_transfer_at_frame(i, &sco_next_transfer_at_frame); 683 #else 684 usb_submit_sco_in_transfer_asap(transfer_index, 1); 685 #endif 686 // update expected and wait for completion 687 usb_sco_in_expected_transfer = (transfer_index+ 1) % ISOC_BUFFERS; 688 689 // log_info("usb_process_sco_in[%02u]: enable data source %02u", transfer_index, usb_sco_in_expected_transfer); 690 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_in[usb_sco_in_expected_transfer], DATA_SOURCE_CALLBACK_READ); 691 } 692 #endif 693 694 static void usb_process_command_out(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 695 696 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_WRITE); 697 698 // update stata before submitting transfer 699 usb_command_out_active = 0; 700 701 // notify upper stack that provided buffer can be used again 702 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 703 packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event)); 704 } 705 706 static void usb_process_acl_out(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 707 708 btstack_run_loop_disable_data_source_callbacks(ds, DATA_SOURCE_CALLBACK_WRITE); 709 710 // update stata before submitting transfer 711 usb_acl_out_active = 0; 712 713 // notify upper stack that provided buffer can be used again 714 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 715 packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event)); 716 } 717 718 static BOOL usb_scan_for_bluetooth_endpoints(void) { 719 int i; 720 USB_INTERFACE_DESCRIPTOR usb_interface_descriptor; 721 722 // reset 723 event_in_addr = 0; 724 acl_in_addr = 0; 725 acl_out_addr = 0; 726 727 log_info("Scanning USB Entpoints:"); 728 729 // look for Event and ACL pipes on Interface #0 730 BOOL result = WinUsb_QueryInterfaceSettings(usb_interface_0_handle, 0, &usb_interface_descriptor); 731 if (!result) goto exit_on_error; 732 for (i=0;i<usb_interface_descriptor.bNumEndpoints;i++){ 733 WINUSB_PIPE_INFORMATION pipe; 734 result = WinUsb_QueryPipe( 735 usb_interface_0_handle, 736 0, 737 (UCHAR) i, 738 &pipe); 739 if (!result) goto exit_on_error; 740 log_info("Interface #0, Alt #0, Pipe idx #%u: type %u, id 0x%02x, max packet size %u,", 741 i, pipe.PipeType, pipe.PipeId, pipe.MaximumPacketSize); 742 switch (pipe.PipeType){ 743 case USB_ENDPOINT_TYPE_INTERRUPT: 744 if (event_in_addr) continue; 745 event_in_addr = pipe.PipeId; 746 log_info("-> using 0x%2.2X for HCI Events", event_in_addr); 747 break; 748 case USB_ENDPOINT_TYPE_BULK: 749 if (pipe.PipeId & 0x80) { 750 if (acl_in_addr) continue; 751 acl_in_addr = pipe.PipeId; 752 log_info("-> using 0x%2.2X for ACL Data In", acl_in_addr); 753 } else { 754 if (acl_out_addr) continue; 755 acl_out_addr = pipe.PipeId; 756 log_info("-> using 0x%2.2X for ACL Data Out", acl_out_addr); 757 } 758 break; 759 default: 760 break; 761 } 762 } 763 764 #ifdef ENABLE_SCO_OVER_HCI 765 sco_out_addr = 0; 766 sco_in_addr = 0; 767 768 // look for SCO pipes on Interface #1, Alt Setting 1 769 int alt_setting = 1; 770 result = WinUsb_QueryInterfaceSettings(usb_interface_1_handle, alt_setting, &usb_interface_descriptor); 771 if (!result) goto exit_on_error; 772 for (i=0;i<usb_interface_descriptor.bNumEndpoints;i++){ 773 BTSTACK_WINUSB_PIPE_INFORMATION_EX pipe; 774 result = BTstack_WinUsb_QueryPipeEx( 775 usb_interface_1_handle, 776 alt_setting, 777 (UCHAR) i, 778 &pipe); 779 if (!result) goto exit_on_error; 780 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", 781 alt_setting, i, pipe.PipeType, pipe.PipeId, pipe.MaximumPacketSize, pipe.Interval, (int) pipe.MaximumBytesPerInterval); 782 switch (pipe.PipeType){ 783 case USB_ENDPOINT_TYPE_ISOCHRONOUS: 784 if (pipe.PipeId & 0x80) { 785 if (sco_in_addr) continue; 786 sco_in_addr = pipe.PipeId; 787 log_info("-> using 0x%2.2X for SCO Data In", sco_in_addr); 788 } else { 789 if (sco_out_addr) continue; 790 sco_out_addr = pipe.PipeId; 791 log_info("-> using 0x%2.2X for SCO Data Out", sco_out_addr); 792 } 793 break; 794 default: 795 break; 796 } 797 } 798 if (!sco_in_addr){ 799 log_error("Couldn't find pipe for SCO IN!"); 800 return FALSE; 801 } 802 if (!sco_out_addr){ 803 log_error("Couldn't find pipe for SCO IN!"); 804 return FALSE; 805 } 806 #endif 807 808 // check if all found 809 if (!event_in_addr){ 810 log_error("Couldn't find pipe for Event IN!"); 811 return FALSE; 812 } 813 if (!acl_in_addr){ 814 log_error("Couldn't find pipe for ACL IN!"); 815 return FALSE; 816 } 817 if (!acl_out_addr){ 818 log_error("Couldn't find pipe for ACL OUT!"); 819 return FALSE; 820 } 821 822 // all clear 823 return TRUE; 824 825 exit_on_error: 826 log_error("usb_scan_for_bluetooth_endpoints: last error %lu", GetLastError()); 827 return FALSE; 828 } 829 830 #ifdef ENABLE_SCO_OVER_HCI 831 832 static int usb_sco_start(void){ 833 printf("usb_sco_start\n"); 834 log_info("usb_sco_start"); 835 836 sco_shutdown = 0; 837 838 sco_state_machine_init(); 839 sco_ring_init(); 840 841 // calc alt setting 842 int alt_setting; 843 if (sco_voice_setting & 0x0020){ 844 // 16-bit PCM 845 alt_setting = alt_setting_16_bit[sco_num_connections-1]; 846 } else { 847 // 8-bit PCM or mSBC 848 alt_setting = alt_setting_8_bit[sco_num_connections-1]; 849 } 850 851 log_info("Switching to setting %u on interface 1..", alt_setting); 852 // WinUsb_SetCurrentAlternateSetting returns TRUE if the operation succeeds. 853 BOOL result = WinUsb_SetCurrentAlternateSetting(usb_interface_1_handle, alt_setting); 854 if (!result) goto exit_on_error; 855 856 // derive iso packet size from alt setting 857 iso_packet_size = iso_packet_size_for_alt_setting[alt_setting]; 858 859 // register isochronous buffer after setting alternate setting 860 usb_sco_register_buffers(); 861 862 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 863 // get current frame number 864 ULONG current_frame_number; 865 LARGE_INTEGER timestamp; 866 BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 867 // plan for next tranfer 868 sco_next_transfer_at_frame = current_frame_number + ISOC_BUFFERS * NUM_ISO_PACKETS; 869 #endif 870 871 int i; 872 for (i=0;i<ISOC_BUFFERS;i++){ 873 #ifdef SCHEDULE_SCO_IN_TRANSFERS_MANUALLY 874 usb_submit_sco_in_transfer_at_frame(i, &sco_next_transfer_at_frame); 875 #else 876 usb_submit_sco_in_transfer_asap(i, 0); 877 #endif 878 } 879 880 usb_sco_in_expected_transfer = 0; 881 882 // only await first transfer to return 883 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_in[usb_sco_in_expected_transfer], DATA_SOURCE_CALLBACK_READ); 884 return 1; 885 886 exit_on_error: 887 log_error("usb_sco_start: last error %lu", GetLastError()); 888 usb_free_resources(); 889 return 0; 890 } 891 892 static void usb_sco_stop(void){ 893 printf("usb_sco_stop\n"); 894 log_info("usb_sco_stop"); 895 896 sco_shutdown = 1; 897 898 // abort SCO transfers 899 WinUsb_AbortPipe(usb_interface_0_handle, sco_in_addr); 900 WinUsb_AbortPipe(usb_interface_0_handle, sco_out_addr); 901 902 // unlock/free SCO buffers 903 usb_sco_unregister_buffers(); 904 905 int alt_setting = 0; 906 log_info("Switching to setting %u on interface 1..", alt_setting); 907 // WinUsb_SetCurrentAlternateSetting returns TRUE if the operation succeeds. 908 WinUsb_SetCurrentAlternateSetting(usb_interface_1_handle, alt_setting); 909 } 910 #endif 911 912 // returns 0 if successful, -1 otherwise 913 static int usb_try_open_device(const char * device_path){ 914 915 // open file 916 usb_device_handle = CreateFile(device_path, 917 GENERIC_WRITE | GENERIC_READ, 918 FILE_SHARE_WRITE | FILE_SHARE_READ, 919 NULL, 920 OPEN_EXISTING, 921 FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, 922 NULL); 923 log_info("Opening USB device: %p", usb_device_handle); 924 if (!usb_device_handle) goto exit_on_error; 925 926 // WinUsb_Initialize returns TRUE if the operation succeed 927 BOOL result = WinUsb_Initialize(usb_device_handle, &usb_interface_0_handle); 928 if (!result) goto exit_on_error; 929 930 // Detect USB Dongle based Class, Subclass, and Protocol 931 // The class code (bDeviceClass) is 0xE0 – Wireless Controller. 932 // The SubClass code (bDeviceSubClass) is 0x01 – RF Controller. 933 // The Protocol code (bDeviceProtocol) is 0x01 – Bluetooth programming. 934 USB_INTERFACE_DESCRIPTOR usb_interface_descriptor; 935 result = WinUsb_QueryInterfaceSettings(usb_interface_0_handle, 0, &usb_interface_descriptor); 936 if (!result) goto exit_on_error; 937 // 938 if (usb_interface_descriptor.bInterfaceClass != 0xe0 || 939 usb_interface_descriptor.bInterfaceSubClass != 0x01 || 940 usb_interface_descriptor.bInterfaceProtocol != 0x01){ 941 942 // check whitelist 943 if (!usb_is_known_bluetooth_device(device_path)){ 944 log_info("Class, Subclass, Protocol does not match Bluetooth device"); 945 usb_free_resources(); 946 return 0; 947 } 948 } 949 950 #ifdef ENABLE_SCO_OVER_HCI 951 log_info("Claiming interface 1..."); 952 // WinUsb_GetAssociatedInterface returns TRUE if the operation succeeds. 953 // We use index 1 - assuming it refers to interface #1 with libusb 954 // A value of 0 indicates the first associated interface, a value of 1 indicates the second associated interface, and so on. 955 result = WinUsb_GetAssociatedInterface(usb_interface_0_handle, 0, &usb_interface_1_handle); 956 if (!result) goto exit_on_error; 957 log_info("Claiming interface 1: success"); 958 #endif 959 960 result = usb_scan_for_bluetooth_endpoints(); 961 if (!result) { 962 log_error("Could not find all Bluetooth Endpoints!"); 963 usb_free_resources(); 964 return 0; 965 } 966 967 #ifdef ENABLE_SCO_OVER_HCI 968 int i; 969 970 memset(hci_sco_packet_descriptors, 0, sizeof(hci_sco_packet_descriptors)); 971 log_info("Size of packet descriptors for SCO IN%u", (int) sizeof(hci_sco_packet_descriptors)); 972 973 // setup async io && btstack handler 974 memset(&usb_overlapped_sco_in, 0, sizeof(usb_overlapped_sco_in)); 975 for (i=0;i<ISOC_BUFFERS;i++){ 976 usb_overlapped_sco_in[i].hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 977 // log_info_hexdump(&usb_overlapped_sco_in[i], sizeof(OVERLAPPED)); 978 // log_info("data source SCO in %u, handle %p", i, usb_overlapped_sco_in[i].hEvent); 979 usb_data_source_sco_in[i].handle = usb_overlapped_sco_in[i].hEvent; 980 btstack_run_loop_set_data_source_handler(&usb_data_source_sco_in[i], &usb_process_sco_in); 981 btstack_run_loop_add_data_source(&usb_data_source_sco_in[i]); 982 } 983 984 memset(&usb_overlapped_sco_out, 0, sizeof(usb_overlapped_sco_out)); 985 for (i=0;i<SCO_RING_BUFFER_COUNT;i++){ 986 usb_overlapped_sco_out[i].hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 987 // log_info("data source SCO out %u, handle %p", i, usb_overlapped_sco_out[i].hEvent); 988 usb_data_source_sco_out[i].handle = usb_overlapped_sco_out[i].hEvent; 989 btstack_run_loop_set_data_source_handler(&usb_data_source_sco_out[i], &usb_process_sco_out); 990 btstack_run_loop_add_data_source(&usb_data_source_sco_out[i]); 991 } 992 #endif 993 994 // setup async io 995 memset(&usb_overlapped_event_in, 0, sizeof(usb_overlapped_event_in)); 996 memset(&usb_overlapped_command_out, 0, sizeof(usb_overlapped_command_out)); 997 memset(&usb_overlapped_acl_out, 0, sizeof(usb_overlapped_acl_out)); 998 memset(&usb_overlapped_acl_in, 0, sizeof(usb_overlapped_acl_in)); 999 usb_overlapped_event_in.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 1000 usb_overlapped_command_out.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 1001 usb_overlapped_acl_in.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 1002 usb_overlapped_acl_out.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); 1003 1004 // setup btstack data soures 1005 usb_data_source_event_in.handle = usb_overlapped_event_in.hEvent; 1006 btstack_run_loop_set_data_source_handler(&usb_data_source_event_in, &usb_process_event_in); 1007 btstack_run_loop_add_data_source(&usb_data_source_event_in); 1008 1009 usb_data_source_command_out.handle = usb_overlapped_command_out.hEvent; 1010 btstack_run_loop_set_data_source_handler(&usb_data_source_command_out, &usb_process_command_out); 1011 btstack_run_loop_add_data_source(&usb_data_source_command_out); 1012 1013 usb_data_source_acl_in.handle = usb_overlapped_acl_in.hEvent; 1014 btstack_run_loop_set_data_source_handler(&usb_data_source_acl_in, &usb_process_acl_in); 1015 btstack_run_loop_add_data_source(&usb_data_source_acl_in); 1016 1017 usb_data_source_acl_out.handle = usb_overlapped_acl_out.hEvent; 1018 btstack_run_loop_set_data_source_handler(&usb_data_source_acl_out, &usb_process_acl_out); 1019 btstack_run_loop_add_data_source(&usb_data_source_acl_out); 1020 1021 // submit all incoming transfers 1022 usb_submit_event_in_transfer(); 1023 usb_submit_acl_in_transfer(); 1024 return 1; 1025 1026 exit_on_error: 1027 log_error("usb_try_open_device: last error %lu", GetLastError()); 1028 usb_free_resources(); 1029 return 0; 1030 } 1031 1032 #ifdef ENABLE_SCO_OVER_HCI 1033 1034 #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) 1035 1036 static BOOL usb_lookup_symbols(void){ 1037 // lookup runtime symbols missing in current mingw64 distribution 1038 HMODULE h = GetModuleHandleA("WinUSB"); 1039 log_info("%-30s %p", "WinUSB", h); 1040 WinUSB_Lookup(WinUsb_QueryPipeEx); 1041 WinUSB_Lookup(WinUsb_RegisterIsochBuffer); 1042 WinUSB_Lookup(WinUsb_ReadIsochPipe); 1043 WinUSB_Lookup(WinUsb_ReadIsochPipeAsap); 1044 WinUSB_Lookup(WinUsb_WriteIsochPipe); 1045 WinUSB_Lookup(WinUsb_WriteIsochPipeAsap); 1046 WinUSB_Lookup(WinUsb_UnregisterIsochBuffer); 1047 WinUSB_Lookup(WinUsb_GetCurrentFrameNumber); 1048 return TRUE; 1049 } 1050 #endif 1051 1052 // returns 0 on success, -1 otherwise 1053 static int usb_open(void){ 1054 1055 int r = -1; 1056 1057 #ifdef ENABLE_SCO_OVER_HCI 1058 BOOL ok = usb_lookup_symbols(); 1059 if (!ok){ 1060 log_error("usb_open: Failed to lookup WinSUB ISOCHRONOUS functions. Please disable ENABLE_SCO_OVER_HCI or use Windows 8.1 or higher"); 1061 return r; 1062 } 1063 sco_state_machine_init(); 1064 sco_ring_init(); 1065 #endif 1066 1067 HDEVINFO hDevInfo; 1068 SP_DEVICE_INTERFACE_DATA DevIntfData; 1069 PSP_DEVICE_INTERFACE_DETAIL_DATA DevIntfDetailData; 1070 SP_DEVINFO_DATA DevData; 1071 1072 DWORD dwSize; 1073 DWORD dwMemberIdx; 1074 1075 // default endpoint addresses 1076 event_in_addr = 0x81; // EP1, IN interrupt 1077 acl_in_addr = 0x82; // EP2, IN bulk 1078 acl_out_addr = 0x02; // EP2, OUT bulk 1079 sco_in_addr = 0x83; // EP3, IN isochronous 1080 sco_out_addr = 0x03; // EP3, OUT isochronous 1081 1082 // We will try to get device information set for all USB devices that have a 1083 // device interface and are currently present on the system (plugged in). 1084 hDevInfo = SetupDiGetClassDevs(&GUID_DEVINTERFACE_USB_DEVICE, NULL, 0, DIGCF_DEVICEINTERFACE | DIGCF_PRESENT); 1085 1086 log_info("usb_open: SetupDiGetClassDevs -> %p", hDevInfo); 1087 if (hDevInfo == INVALID_HANDLE_VALUE) return -1; 1088 1089 // Prepare to enumerate all device interfaces for the device information 1090 // set that we retrieved with SetupDiGetClassDevs(..) 1091 DevIntfData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA); 1092 dwMemberIdx = 0; 1093 1094 // Next, we will keep calling this SetupDiEnumDeviceInterfaces(..) until this 1095 // function causes GetLastError() to return ERROR_NO_MORE_ITEMS. With each 1096 // call the dwMemberIdx value needs to be incremented to retrieve the next 1097 // device interface information. 1098 1099 SetupDiEnumDeviceInterfaces(hDevInfo, NULL, (LPGUID) &GUID_DEVINTERFACE_USB_DEVICE, 1100 dwMemberIdx, &DevIntfData); 1101 1102 while(GetLastError() != ERROR_NO_MORE_ITEMS){ 1103 1104 // As a last step we will need to get some more details for each 1105 // of device interface information we are able to retrieve. This 1106 // device interface detail gives us the information we need to identify 1107 // the device (VID/PID), and decide if it's useful to us. It will also 1108 // provide a DEVINFO_DATA structure which we can use to know the serial 1109 // port name for a virtual com port. 1110 1111 DevData.cbSize = sizeof(DevData); 1112 1113 // Get the required buffer size. Call SetupDiGetDeviceInterfaceDetail with 1114 // a NULL DevIntfDetailData pointer, a DevIntfDetailDataSize 1115 // of zero, and a valid RequiredSize variable. In response to such a call, 1116 // this function returns the required buffer size at dwSize. 1117 1118 SetupDiGetDeviceInterfaceDetail( 1119 hDevInfo, &DevIntfData, NULL, 0, &dwSize, NULL); 1120 1121 // Allocate memory for the DeviceInterfaceDetail struct. Don't forget to 1122 // deallocate it later! 1123 DevIntfDetailData = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, dwSize); 1124 DevIntfDetailData->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA); 1125 1126 if (SetupDiGetDeviceInterfaceDetail(hDevInfo, &DevIntfData, 1127 DevIntfDetailData, dwSize, &dwSize, &DevData)) 1128 { 1129 // Finally we can start checking if we've found a useable device, 1130 // by inspecting the DevIntfDetailData->DevicePath variable. 1131 // The DevicePath looks something like this: 1132 // 1133 // \\?\usb#vid_04d8&pid_0033#5&19f2438f&0&2#{a5dcbf10-6530-11d2-901f-00c04fb951ed} 1134 // 1135 1136 log_info("usb_open: Device Path: %s", DevIntfDetailData->DevicePath); 1137 1138 #if 0 1139 // check for hard-coded vendor/product ids 1140 char vid_pid_match[30]; 1141 uint16_t vid = 0x0a12; 1142 uint16_t pid = 0x0001; 1143 sprintf(vid_pid_match, "\\\\?\\usb#vid_%04x&pid_%04x", vid, pid); 1144 if (strncmp(DevIntfDetailData->DevicePath, &vid_pid_match[0], strlen(vid_pid_match)) == 0 ){ 1145 log_info("Matched search string %s", vid_pid_match); 1146 1147 BOOL result = usb_try_open_device(DevIntfDetailData->DevicePath); 1148 if (result){ 1149 log_info("usb_open: Device opened, stop scanning"); 1150 r = 0; 1151 } else { 1152 log_error("usb_open: Device open failed"); 1153 } 1154 } 1155 #endif 1156 1157 // try all devices 1158 BOOL result = usb_try_open_device(DevIntfDetailData->DevicePath); 1159 if (result){ 1160 log_info("usb_open: Device opened, stop scanning"); 1161 r = 0; 1162 } else { 1163 log_error("usb_open: Device open failed"); 1164 } 1165 } 1166 HeapFree(GetProcessHeap(), 0, DevIntfDetailData); 1167 1168 if (r == 0) break; 1169 1170 // Continue looping 1171 SetupDiEnumDeviceInterfaces( 1172 hDevInfo, NULL, &GUID_DEVINTERFACE_USB_DEVICE, ++dwMemberIdx, &DevIntfData); 1173 } 1174 1175 SetupDiDestroyDeviceInfoList(hDevInfo); 1176 1177 log_info("usb_open: done"); 1178 1179 return r; 1180 } 1181 1182 static int usb_close(void){ 1183 1184 // remove data sources 1185 btstack_run_loop_remove_data_source(&usb_data_source_command_out); 1186 btstack_run_loop_remove_data_source(&usb_data_source_event_in); 1187 btstack_run_loop_remove_data_source(&usb_data_source_acl_in); 1188 btstack_run_loop_remove_data_source(&usb_data_source_acl_out); 1189 1190 #ifdef ENABLE_SCO_OVER_HCI 1191 int i; 1192 for (i=0;i<ISOC_BUFFERS;i++){ 1193 btstack_run_loop_remove_data_source(&usb_data_source_sco_in[i]); 1194 } 1195 for (i=0;i<SCO_RING_BUFFER_COUNT;i++){ 1196 btstack_run_loop_remove_data_source(&usb_data_source_sco_out[i]); 1197 } 1198 #endif 1199 1200 // stop transfers 1201 WinUsb_AbortPipe(usb_interface_0_handle, event_in_addr); 1202 WinUsb_AbortPipe(usb_interface_0_handle, acl_in_addr); 1203 WinUsb_AbortPipe(usb_interface_0_handle, acl_out_addr); 1204 #ifdef ENABLE_SCO_OVER_HCI 1205 usb_sco_stop(); 1206 #endif 1207 usb_acl_out_active = 0; 1208 1209 // control transfer cannot be stopped, just wait for completion 1210 if (usb_command_out_active){ 1211 DWORD bytes_transferred; 1212 WinUsb_GetOverlappedResult(usb_interface_0_handle, &usb_overlapped_command_out, &bytes_transferred, TRUE); 1213 usb_command_out_active = 0; 1214 } 1215 1216 // free everything 1217 usb_free_resources(); 1218 return 0; 1219 } 1220 1221 static int usb_can_send_packet_now(uint8_t packet_type){ 1222 // return 0; 1223 switch (packet_type){ 1224 case HCI_COMMAND_DATA_PACKET: 1225 return !usb_command_out_active; 1226 case HCI_ACL_DATA_PACKET: 1227 return !usb_acl_out_active; 1228 #ifdef ENABLE_SCO_OVER_HCI 1229 case HCI_SCO_DATA_PACKET: 1230 // return 0; 1231 return sco_ring_have_space(); 1232 #endif 1233 default: 1234 return 0; 1235 } 1236 } 1237 1238 static int usb_send_cmd_packet(uint8_t *packet, int size){ 1239 1240 // update stata before submitting transfer 1241 usb_command_out_active = 1; 1242 1243 // Start trasnsfer 1244 WINUSB_SETUP_PACKET setup_packet; 1245 memset(&setup_packet, 0, sizeof(setup_packet)); 1246 setup_packet.RequestType = USB_REQUEST_TYPE_CLASS | USB_RECIPIENT_INTERFACE; 1247 setup_packet.Length = sizeof(size); 1248 BOOL result = WinUsb_ControlTransfer(usb_interface_0_handle, setup_packet, packet, size, NULL, &usb_overlapped_command_out); 1249 if (!result) { 1250 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 1251 } 1252 1253 // IO_PENDING -> wait for completed 1254 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_command_out, DATA_SOURCE_CALLBACK_WRITE); 1255 1256 return 0; 1257 1258 exit_on_error: 1259 log_error("winusb: last error %lu", GetLastError()); 1260 return -1; 1261 } 1262 1263 static int usb_send_acl_packet(uint8_t *packet, int size){ 1264 1265 // update stata before submitting transfer 1266 usb_acl_out_active = 1; 1267 1268 // Start trasnsfer 1269 BOOL ok = WinUsb_WritePipe(usb_interface_0_handle, acl_out_addr, packet, size, NULL, &usb_overlapped_acl_out); 1270 if (!ok) { 1271 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 1272 } 1273 1274 // IO_PENDING -> wait for completed 1275 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_acl_out, DATA_SOURCE_CALLBACK_WRITE); 1276 return 0; 1277 1278 exit_on_error: 1279 log_error("winusb: last error %lu", GetLastError()); 1280 return -1; 1281 } 1282 1283 #ifdef ENABLE_SCO_OVER_HCI 1284 static int usb_send_sco_packet(uint8_t *packet, int size){ 1285 1286 if (size > SCO_PACKET_SIZE){ 1287 log_error("usb_send_sco_packet: size %u > SCO_PACKET_SIZE %u", size, SCO_PACKET_SIZE); 1288 return -1; 1289 } 1290 1291 // get current frame number 1292 ULONG current_frame_number; 1293 LARGE_INTEGER timestamp; 1294 BTstack_WinUsb_GetCurrentFrameNumber(usb_interface_0_handle, ¤t_frame_number, ×tamp); 1295 1296 // store packet in free slot 1297 int transfer_index = sco_ring_write; 1298 uint8_t * data = &sco_ring_buffer[transfer_index * SCO_PACKET_SIZE]; 1299 memcpy(data, packet, size); 1300 1301 1302 // setup transfer 1303 int continue_stream = sco_ring_transfers_active > 0; 1304 BOOL ok = BTstack_WinUsb_WriteIsochPipeAsap(hci_sco_out_buffer_handle, transfer_index * SCO_PACKET_SIZE, size, continue_stream, &usb_overlapped_sco_out[transfer_index]); 1305 // 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); 1306 if (!ok) { 1307 if (GetLastError() != ERROR_IO_PENDING) goto exit_on_error; 1308 } 1309 1310 // successful started transfer, enable data source callback if first active transfer 1311 if (sco_ring_transfers_active == 0){ 1312 usb_sco_out_expected_transfer = transfer_index; 1313 btstack_run_loop_enable_data_source_callbacks(&usb_data_source_sco_out[transfer_index], DATA_SOURCE_CALLBACK_WRITE); 1314 } 1315 1316 // mark slot as full 1317 sco_ring_write = (sco_ring_write + 1) % SCO_RING_BUFFER_COUNT; 1318 sco_ring_transfers_active++; 1319 1320 // notify upper stack that provided buffer can be used again 1321 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 1322 packet_handler(HCI_EVENT_PACKET, &event[0], sizeof(event)); 1323 1324 // log_info("usb_send_sco_packet: transfers active %u", sco_ring_transfers_active); 1325 1326 // and if we have more space for SCO packets 1327 if (sco_ring_have_space()) { 1328 uint8_t event_sco[] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0}; 1329 packet_handler(HCI_EVENT_PACKET, &event_sco[0], sizeof(event_sco)); 1330 } 1331 return 0; 1332 1333 exit_on_error: 1334 log_error("usb_send_sco_packet: last error %lu", GetLastError()); 1335 return -1; 1336 } 1337 #endif 1338 1339 static int usb_send_packet(uint8_t packet_type, uint8_t * packet, int size){ 1340 switch (packet_type){ 1341 case HCI_COMMAND_DATA_PACKET: 1342 return usb_send_cmd_packet(packet, size); 1343 case HCI_ACL_DATA_PACKET: 1344 return usb_send_acl_packet(packet, size); 1345 #ifdef ENABLE_SCO_OVER_HCI 1346 case HCI_SCO_DATA_PACKET: 1347 return usb_send_sco_packet(packet, size); 1348 #endif 1349 default: 1350 return -1; 1351 } 1352 } 1353 1354 #ifdef ENABLE_SCO_OVER_HCI 1355 static void usb_set_sco_config(uint16_t voice_setting, int num_connections){ 1356 log_info("usb_set_sco_config: voice settings 0x%04x, num connections %u", voice_setting, num_connections); 1357 1358 if (num_connections != sco_num_connections){ 1359 sco_voice_setting = voice_setting; 1360 if (sco_num_connections){ 1361 usb_sco_stop(); 1362 } 1363 sco_num_connections = num_connections; 1364 if (num_connections){ 1365 usb_sco_start(); 1366 } 1367 } 1368 } 1369 #endif 1370 1371 // get usb singleton 1372 static const hci_transport_t hci_transport_usb = { 1373 /* const char * name; */ "H2_WINUSB", 1374 /* void (*init) (const void *transport_config); */ &usb_init, 1375 /* int (*open)(void); */ &usb_open, 1376 /* int (*close)(void); */ &usb_close, 1377 /* void (*register_packet_handler)(void (*handler)(...); */ &usb_register_packet_handler, 1378 /* int (*can_send_packet_now)(uint8_t packet_type); */ &usb_can_send_packet_now, 1379 /* int (*send_packet)(...); */ &usb_send_packet, 1380 /* int (*set_baudrate)(uint32_t baudrate); */ NULL, 1381 /* void (*reset_link)(void); */ NULL, 1382 #ifdef ENABLE_SCO_OVER_HCI 1383 /* void (*set_sco_config)(uint16_t voice_setting, int num_connections); */ usb_set_sco_config, 1384 #else 1385 /* void (*set_sco_config)(uint16_t voice_setting, int num_connections); */ NULL, 1386 #endif 1387 }; 1388 1389 const hci_transport_t * hci_transport_usb_instance(void) { 1390 return &hci_transport_usb; 1391 } 1392