forked from hathach/tinyusb
-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathusbh.c
1717 lines (1418 loc) · 57.1 KB
/
usbh.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file is part of the TinyUSB stack.
*/
#include "tusb_option.h"
#if CFG_TUH_ENABLED
#include "host/hcd.h"
#include "tusb.h"
#include "host/usbh_pvt.h"
#include "hub.h"
//--------------------------------------------------------------------+
// USBH Configuration
//--------------------------------------------------------------------+
#ifndef CFG_TUH_TASK_QUEUE_SZ
#define CFG_TUH_TASK_QUEUE_SZ 16
#endif
#ifndef CFG_TUH_INTERFACE_MAX
#define CFG_TUH_INTERFACE_MAX 8
#endif
//--------------------------------------------------------------------+
// Weak stubs: invoked if no strong implementation is available
//--------------------------------------------------------------------+
TU_ATTR_WEAK bool hcd_deinit(uint8_t rhport) {
(void) rhport;
return false;
}
TU_ATTR_WEAK void tuh_event_hook_cb(uint8_t rhport, uint32_t eventid, bool in_isr) {
(void) rhport;
(void) eventid;
(void) in_isr;
}
//--------------------------------------------------------------------+
// USBH-HCD common data structure
//--------------------------------------------------------------------+
typedef struct {
// port
uint8_t rhport;
uint8_t hub_addr;
uint8_t hub_port;
struct TU_ATTR_PACKED {
uint8_t speed : 4; // packed speed to save footprint
volatile uint8_t enumerating : 1; // enumeration is in progress, false if not connected or all interfaces are configured
uint8_t TU_RESERVED : 3;
};
} usbh_dev0_t;
typedef struct {
// port, must be same layout as usbh_dev0_t
uint8_t rhport;
uint8_t hub_addr;
uint8_t hub_port;
uint8_t speed;
// Device State
struct TU_ATTR_PACKED {
volatile uint8_t connected : 1; // After 1st transfer
volatile uint8_t addressed : 1; // After SET_ADDR
volatile uint8_t configured : 1; // After SET_CONFIG and all drivers are configured
volatile uint8_t suspended : 1; // Bus suspended
// volatile uint8_t removing : 1; // Physically disconnected, waiting to be processed by usbh
};
// Device Descriptor
uint8_t ep0_size;
uint16_t vid;
uint16_t pid;
uint8_t i_manufacturer;
uint8_t i_product;
uint8_t i_serial;
// Configuration Descriptor
// uint8_t interface_count; // bNumInterfaces alias
// Endpoint & Interface
uint8_t itf2drv[CFG_TUH_INTERFACE_MAX]; // map interface number to driver (0xff is invalid)
uint8_t ep2drv[CFG_TUH_ENDPOINT_MAX][2]; // map endpoint to driver ( 0xff is invalid ), can use only 4-bit each
tu_edpt_state_t ep_status[CFG_TUH_ENDPOINT_MAX][2];
#if CFG_TUH_API_EDPT_XFER
// TODO array can be CFG_TUH_ENDPOINT_MAX-1
struct {
tuh_xfer_cb_t complete_cb;
uintptr_t user_data;
}ep_callback[CFG_TUH_ENDPOINT_MAX][2];
#endif
} usbh_device_t;
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
#if CFG_TUSB_DEBUG >= CFG_TUH_LOG_LEVEL
#define DRIVER_NAME(_name) _name
#else
#define DRIVER_NAME(_name) NULL
#endif
static usbh_class_driver_t const usbh_class_drivers[] = {
#if CFG_TUH_CDC
{
.name = DRIVER_NAME("CDC"),
.init = cdch_init,
.deinit = cdch_deinit,
.open = cdch_open,
.set_config = cdch_set_config,
.xfer_cb = cdch_xfer_cb,
.close = cdch_close
},
#endif
#if CFG_TUH_MSC
{
.name = DRIVER_NAME("MSC"),
.init = msch_init,
.deinit = msch_deinit,
.open = msch_open,
.set_config = msch_set_config,
.xfer_cb = msch_xfer_cb,
.close = msch_close
},
#endif
#if CFG_TUH_HID
{
.name = DRIVER_NAME("HID"),
.init = hidh_init,
.deinit = hidh_deinit,
.open = hidh_open,
.set_config = hidh_set_config,
.xfer_cb = hidh_xfer_cb,
.close = hidh_close
},
#endif
#if CFG_TUH_HUB
{
.name = DRIVER_NAME("HUB"),
.init = hub_init,
.deinit = hub_deinit,
.open = hub_open,
.set_config = hub_set_config,
.xfer_cb = hub_xfer_cb,
.close = hub_close
},
#endif
#if CFG_TUH_VENDOR
{
.name = DRIVER_NAME("VENDOR"),
.init = cush_init,
.deinit = cush_deinit,
.open = cush_open,
.set_config = cush_set_config,
.xfer_cb = cush_isr,
.close = cush_close
}
#endif
};
enum { BUILTIN_DRIVER_COUNT = TU_ARRAY_SIZE(usbh_class_drivers) };
enum { CONFIG_NUM = 1 }; // default to use configuration 1
// Additional class drivers implemented by application
tu_static usbh_class_driver_t const * _app_driver = NULL;
tu_static uint8_t _app_driver_count = 0;
#define TOTAL_DRIVER_COUNT (_app_driver_count + BUILTIN_DRIVER_COUNT)
static inline usbh_class_driver_t const *get_driver(uint8_t drv_id) {
usbh_class_driver_t const *driver = NULL;
if ( drv_id < _app_driver_count ) {
driver = &_app_driver[drv_id];
} else if ( drv_id < TOTAL_DRIVER_COUNT && BUILTIN_DRIVER_COUNT > 0) {
driver = &usbh_class_drivers[drv_id - _app_driver_count];
}
return driver;
}
//--------------------------------------------------------------------+
// INTERNAL OBJECT & FUNCTION DECLARATION
//--------------------------------------------------------------------+
// sum of end device + hub
#define TOTAL_DEVICES (CFG_TUH_DEVICE_MAX + CFG_TUH_HUB)
static uint8_t _usbh_controller = TUSB_INDEX_INVALID_8;
// Device with address = 0 for enumeration
static usbh_dev0_t _dev0;
// all devices excluding zero-address
// hub address start from CFG_TUH_DEVICE_MAX+1
// TODO: hub can has its own simpler struct to save memory
static usbh_device_t _usbh_devices[TOTAL_DEVICES];
// Mutex for claiming endpoint
#if OSAL_MUTEX_REQUIRED
static osal_mutex_def_t _usbh_mutexdef;
static osal_mutex_t _usbh_mutex;
#else
#define _usbh_mutex NULL
#endif
// Event queue
// usbh_int_set is used as mutex in OS NONE config
OSAL_QUEUE_DEF(usbh_int_set, _usbh_qdef, CFG_TUH_TASK_QUEUE_SZ, hcd_event_t);
static osal_queue_t _usbh_q;
CFG_TUH_MEM_SECTION CFG_TUH_MEM_ALIGN
static uint8_t _usbh_ctrl_buf[CFG_TUH_ENUMERATION_BUFSIZE];
// Control transfers: since most controllers do not support multiple control transfers
// on multiple devices concurrently and control transfers are not used much except for
// enumeration, we will only execute control transfers one at a time.
CFG_TUH_MEM_SECTION struct {
CFG_TUH_MEM_ALIGN tusb_control_request_t request;
uint8_t* buffer;
tuh_xfer_cb_t complete_cb;
uintptr_t user_data;
uint8_t daddr;
volatile uint8_t stage;
volatile uint16_t actual_len;
}_ctrl_xfer;
//------------- Helper Function -------------//
TU_ATTR_ALWAYS_INLINE static inline usbh_device_t* get_device(uint8_t dev_addr) {
TU_VERIFY(dev_addr > 0 && dev_addr <= TOTAL_DEVICES, NULL);
return &_usbh_devices[dev_addr-1];
}
static bool enum_new_device(hcd_event_t* event);
static void process_removing_device(uint8_t rhport, uint8_t hub_addr, uint8_t hub_port);
static bool usbh_edpt_control_open(uint8_t dev_addr, uint8_t max_packet_size);
static bool usbh_control_xfer_cb (uint8_t daddr, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
#if CFG_TUSB_OS == OPT_OS_NONE
// TODO rework time-related function later
// weak and overridable
TU_ATTR_WEAK void osal_task_delay(uint32_t msec) {
const uint32_t start = hcd_frame_number(_usbh_controller);
while ( ( hcd_frame_number(_usbh_controller) - start ) < msec ) {}
}
#endif
TU_ATTR_ALWAYS_INLINE static inline bool queue_event(hcd_event_t const * event, bool in_isr) {
bool ret = osal_queue_send(_usbh_q, event, in_isr);
tuh_event_hook_cb(event->rhport, event->event_id, in_isr);
return ret;
}
//--------------------------------------------------------------------+
// Device API
//--------------------------------------------------------------------+
bool tuh_mounted(uint8_t dev_addr) {
usbh_device_t *dev = get_device(dev_addr);
TU_VERIFY(dev);
return dev->configured;
}
bool tuh_vid_pid_get(uint8_t dev_addr, uint16_t *vid, uint16_t *pid) {
*vid = *pid = 0;
usbh_device_t const *dev = get_device(dev_addr);
TU_VERIFY(dev && dev->addressed && dev->vid != 0);
*vid = dev->vid;
*pid = dev->pid;
return true;
}
tusb_speed_t tuh_speed_get(uint8_t dev_addr) {
usbh_device_t *dev = get_device(dev_addr);
return (tusb_speed_t) (dev ? get_device(dev_addr)->speed : _dev0.speed);
}
bool tuh_rhport_is_active(uint8_t rhport) {
return _usbh_controller == rhport;
}
bool tuh_rhport_reset_bus(uint8_t rhport, bool active) {
TU_VERIFY(tuh_rhport_is_active(rhport));
if ( active ) {
hcd_port_reset(rhport);
} else {
hcd_port_reset_end(rhport);
}
return true;
}
//--------------------------------------------------------------------+
// PUBLIC API (Parameter Verification is required)
//--------------------------------------------------------------------+
bool tuh_configure(uint8_t rhport, uint32_t cfg_id, const void *cfg_param) {
if ( hcd_configure ) {
return hcd_configure(rhport, cfg_id, cfg_param);
} else {
return false;
}
}
static void clear_device(usbh_device_t* dev) {
tu_memclr(dev, sizeof(usbh_device_t));
memset(dev->itf2drv, TUSB_INDEX_INVALID_8, sizeof(dev->itf2drv)); // invalid mapping
memset(dev->ep2drv , TUSB_INDEX_INVALID_8, sizeof(dev->ep2drv )); // invalid mapping
}
bool tuh_inited(void) {
return _usbh_controller != TUSB_INDEX_INVALID_8;
}
bool tuh_init(uint8_t rhport) {
// skip if already initialized
if ( tuh_inited() ) return true;
TU_LOG_USBH("USBH init on controller %u\r\n", rhport);
TU_LOG_INT_USBH(sizeof(usbh_device_t));
TU_LOG_INT_USBH(sizeof(hcd_event_t));
TU_LOG_INT_USBH(sizeof(_ctrl_xfer));
TU_LOG_INT_USBH(sizeof(tuh_xfer_t));
TU_LOG_INT_USBH(sizeof(tu_fifo_t));
TU_LOG_INT_USBH(sizeof(tu_edpt_stream_t));
// Event queue
_usbh_q = osal_queue_create( &_usbh_qdef );
TU_ASSERT(_usbh_q != NULL);
#if OSAL_MUTEX_REQUIRED
// Init mutex
_usbh_mutex = osal_mutex_create(&_usbh_mutexdef);
TU_ASSERT(_usbh_mutex);
#endif
// Get application driver if available
if ( usbh_app_driver_get_cb ) {
_app_driver = usbh_app_driver_get_cb(&_app_driver_count);
}
// Device
tu_memclr(&_dev0, sizeof(_dev0));
tu_memclr(_usbh_devices, sizeof(_usbh_devices));
tu_memclr(&_ctrl_xfer, sizeof(_ctrl_xfer));
for(uint8_t i=0; i<TOTAL_DEVICES; i++) {
clear_device(&_usbh_devices[i]);
}
// Class drivers
for (uint8_t drv_id = 0; drv_id < TOTAL_DRIVER_COUNT; drv_id++) {
usbh_class_driver_t const* driver = get_driver(drv_id);
if (driver) {
TU_LOG_USBH("%s init\r\n", driver->name);
driver->init();
}
}
_usbh_controller = rhport;;
TU_ASSERT(hcd_init(rhport));
hcd_int_enable(rhport);
return true;
}
bool tuh_deinit(uint8_t rhport) {
if (!tuh_rhport_is_active(rhport)) return true;
hcd_int_disable(rhport);
hcd_deinit(rhport);
_usbh_controller = TUSB_INDEX_INVALID_8;
// no other controller is active, deinit the stack
if (!tuh_inited()) {
}
return true;
}
bool tuh_task_event_ready(void) {
// Skip if stack is not initialized
if ( !tuh_inited() ) return false;
return !osal_queue_empty(_usbh_q);
}
/* USB Host Driver task
* This top level thread manages all host controller event and delegates events to class-specific drivers.
* This should be called periodically within the mainloop or rtos thread.
*
@code
int main(void)
{
application_init();
tusb_init();
while(1) // the mainloop
{
application_code();
tuh_task(); // tinyusb host task
}
}
@endcode
*/
void tuh_task_ext(uint32_t timeout_ms, bool in_isr) {
(void) in_isr; // not implemented yet
// Skip if stack is not initialized
if (!tuh_inited()) return;
// Loop until there is no more events in the queue
while (1) {
hcd_event_t event;
if (!osal_queue_receive(_usbh_q, &event, timeout_ms)) return;
switch (event.event_id) {
case HCD_EVENT_DEVICE_ATTACH:
// due to the shared _usbh_ctrl_buf, we must complete enumerating one device before enumerating another one.
// TODO better to have an separated queue for newly attached devices
if (_dev0.enumerating) {
TU_LOG_USBH("[%u:] USBH Defer Attach until current enumeration complete\r\n", event.rhport);
bool is_empty = osal_queue_empty(_usbh_q);
queue_event(&event, in_isr);
if (is_empty) {
// Exit if this is the only event in the queue, otherwise we may loop forever
return;
}
} else {
TU_LOG_USBH("[%u:] USBH DEVICE ATTACH\r\n", event.rhport);
_dev0.enumerating = 1;
enum_new_device(&event);
}
break;
case HCD_EVENT_DEVICE_REMOVE:
TU_LOG_USBH("[%u:%u:%u] USBH DEVICE REMOVED\r\n", event.rhport, event.connection.hub_addr, event.connection.hub_port);
process_removing_device(event.rhport, event.connection.hub_addr, event.connection.hub_port);
#if CFG_TUH_HUB
// TODO remove
if (event.connection.hub_addr != 0 && event.connection.hub_port != 0) {
// done with hub, waiting for next data on status pipe
(void) hub_edpt_status_xfer(event.connection.hub_addr);
}
#endif
break;
case HCD_EVENT_XFER_COMPLETE: {
uint8_t const ep_addr = event.xfer_complete.ep_addr;
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const ep_dir = (uint8_t) tu_edpt_dir(ep_addr);
TU_LOG_USBH("on EP %02X with %u bytes: %s\r\n", ep_addr, (unsigned int) event.xfer_complete.len, tu_str_xfer_result[event.xfer_complete.result]);
if (event.dev_addr == 0) {
// device 0 only has control endpoint
TU_ASSERT(epnum == 0,);
usbh_control_xfer_cb(event.dev_addr, ep_addr, (xfer_result_t) event.xfer_complete.result, event.xfer_complete.len);
} else {
usbh_device_t* dev = get_device(event.dev_addr);
TU_VERIFY(dev && dev->connected,);
dev->ep_status[epnum][ep_dir].busy = 0;
dev->ep_status[epnum][ep_dir].claimed = 0;
if (0 == epnum) {
usbh_control_xfer_cb(event.dev_addr, ep_addr, (xfer_result_t) event.xfer_complete.result, event.xfer_complete.len);
} else {
// Prefer application callback over built-in one if available. This occurs when tuh_edpt_xfer() is used
// with enabled driver e.g HID endpoint
#if CFG_TUH_API_EDPT_XFER
tuh_xfer_cb_t const complete_cb = dev->ep_callback[epnum][ep_dir].complete_cb;
if ( complete_cb ) {
// re-construct xfer info
tuh_xfer_t xfer = {
.daddr = event.dev_addr,
.ep_addr = ep_addr,
.result = event.xfer_complete.result,
.actual_len = event.xfer_complete.len,
.buflen = 0, // not available
.buffer = NULL, // not available
.complete_cb = complete_cb,
.user_data = dev->ep_callback[epnum][ep_dir].user_data
};
complete_cb(&xfer);
}else
#endif
{
uint8_t drv_id = dev->ep2drv[epnum][ep_dir];
usbh_class_driver_t const* driver = get_driver(drv_id);
if (driver) {
TU_LOG_USBH("%s xfer callback\r\n", driver->name);
driver->xfer_cb(event.dev_addr, ep_addr, (xfer_result_t) event.xfer_complete.result,
event.xfer_complete.len);
} else {
// no driver/callback responsible for this transfer
TU_ASSERT(false,);
}
}
}
}
break;
}
case USBH_EVENT_FUNC_CALL:
if (event.func_call.func) event.func_call.func(event.func_call.param);
break;
default:
break;
}
#if CFG_TUSB_OS != OPT_OS_NONE && CFG_TUSB_OS != OPT_OS_PICO
// return if there is no more events, for application to run other background
if (osal_queue_empty(_usbh_q)) return;
#endif
}
}
//--------------------------------------------------------------------+
// Control transfer
//--------------------------------------------------------------------+
static void _control_blocking_complete_cb(tuh_xfer_t* xfer) {
// update result
*((xfer_result_t*) xfer->user_data) = xfer->result;
}
// TODO timeout_ms is not supported yet
bool tuh_control_xfer (tuh_xfer_t* xfer) {
// EP0 with setup packet
TU_VERIFY(xfer->ep_addr == 0 && xfer->setup);
// Check if device is still connected (enumerating for dev0)
uint8_t const daddr = xfer->daddr;
if ( daddr == 0 ) {
if (!_dev0.enumerating) return false;
} else {
usbh_device_t const* dev = get_device(daddr);
if (dev && dev->connected == 0) return false;
}
// pre-check to help reducing mutex lock
TU_VERIFY(_ctrl_xfer.stage == CONTROL_STAGE_IDLE);
(void) osal_mutex_lock(_usbh_mutex, OSAL_TIMEOUT_WAIT_FOREVER);
bool const is_idle = (_ctrl_xfer.stage == CONTROL_STAGE_IDLE);
if (is_idle) {
_ctrl_xfer.stage = CONTROL_STAGE_SETUP;
_ctrl_xfer.daddr = daddr;
_ctrl_xfer.actual_len = 0;
_ctrl_xfer.request = (*xfer->setup);
_ctrl_xfer.buffer = xfer->buffer;
_ctrl_xfer.complete_cb = xfer->complete_cb;
_ctrl_xfer.user_data = xfer->user_data;
}
(void) osal_mutex_unlock(_usbh_mutex);
TU_VERIFY(is_idle);
const uint8_t rhport = usbh_get_rhport(daddr);
TU_LOG_USBH("[%u:%u] %s: ", rhport, daddr,
(xfer->setup->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD && xfer->setup->bRequest <= TUSB_REQ_SYNCH_FRAME) ?
tu_str_std_request[xfer->setup->bRequest] : "Class Request");
TU_LOG_BUF_USBH(xfer->setup, 8);
if (xfer->complete_cb) {
TU_ASSERT( hcd_setup_send(rhport, daddr, (uint8_t const*) &_ctrl_xfer.request) );
}else {
// blocking if complete callback is not provided
// change callback to internal blocking, and result as user argument
volatile xfer_result_t result = XFER_RESULT_INVALID;
// use user_data to point to xfer_result_t
_ctrl_xfer.user_data = (uintptr_t) &result;
_ctrl_xfer.complete_cb = _control_blocking_complete_cb;
TU_ASSERT( hcd_setup_send(rhport, daddr, (uint8_t*) &_ctrl_xfer.request) );
while (result == XFER_RESULT_INVALID) {
// Note: this can be called within an callback ie. part of tuh_task()
// therefore event with RTOS tuh_task() still need to be invoked
if (tuh_task_event_ready()) {
tuh_task();
}
// TODO probably some timeout to prevent hanged
}
// update transfer result, user_data is expected to point to xfer_result_t
if (xfer->user_data != 0) {
*((xfer_result_t*) xfer->user_data) = result;
}
xfer->result = result;
xfer->actual_len = _ctrl_xfer.actual_len;
}
return true;
}
TU_ATTR_ALWAYS_INLINE static inline void _set_control_xfer_stage(uint8_t stage) {
(void) osal_mutex_lock(_usbh_mutex, OSAL_TIMEOUT_WAIT_FOREVER);
_ctrl_xfer.stage = stage;
(void) osal_mutex_unlock(_usbh_mutex);
}
static void _control_xfer_complete(uint8_t daddr, xfer_result_t result) {
TU_LOG_USBH("\r\n");
// duplicate xfer since user can execute control transfer within callback
tusb_control_request_t const request = _ctrl_xfer.request;
tuh_xfer_t xfer_temp = {
.daddr = daddr,
.ep_addr = 0,
.result = result,
.setup = &request,
.actual_len = (uint32_t) _ctrl_xfer.actual_len,
.buffer = _ctrl_xfer.buffer,
.complete_cb = _ctrl_xfer.complete_cb,
.user_data = _ctrl_xfer.user_data
};
_set_control_xfer_stage(CONTROL_STAGE_IDLE);
if (xfer_temp.complete_cb) {
xfer_temp.complete_cb(&xfer_temp);
}
}
static bool usbh_control_xfer_cb (uint8_t daddr, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes) {
(void) ep_addr;
const uint8_t rhport = usbh_get_rhport(daddr);
tusb_control_request_t const * request = &_ctrl_xfer.request;
if (XFER_RESULT_SUCCESS != result) {
TU_LOG_USBH("[%u:%u] Control %s, xferred_bytes = %lu\r\n", rhport, daddr, result == XFER_RESULT_STALLED ? "STALLED" : "FAILED", xferred_bytes);
TU_LOG_BUF_USBH(request, 8);
// terminate transfer if any stage failed
_control_xfer_complete(daddr, result);
}else {
switch(_ctrl_xfer.stage) {
case CONTROL_STAGE_SETUP:
if (request->wLength) {
// DATA stage: initial data toggle is always 1
_set_control_xfer_stage(CONTROL_STAGE_DATA);
TU_ASSERT( hcd_edpt_xfer(rhport, daddr, tu_edpt_addr(0, request->bmRequestType_bit.direction), _ctrl_xfer.buffer, request->wLength) );
return true;
}
TU_ATTR_FALLTHROUGH;
case CONTROL_STAGE_DATA:
if (request->wLength) {
TU_LOG_USBH("[%u:%u] Control data:\r\n", rhport, daddr);
TU_LOG_MEM_USBH(_ctrl_xfer.buffer, xferred_bytes, 2);
}
_ctrl_xfer.actual_len = (uint16_t) xferred_bytes;
// ACK stage: toggle is always 1
_set_control_xfer_stage(CONTROL_STAGE_ACK);
TU_ASSERT( hcd_edpt_xfer(rhport, daddr, tu_edpt_addr(0, 1 - request->bmRequestType_bit.direction), NULL, 0) );
break;
case CONTROL_STAGE_ACK: {
// Abort all pending transfers if SET_CONFIGURATION request
// NOTE: should we force closing all non-control endpoints in the future?
if (request->bRequest == TUSB_REQ_SET_CONFIGURATION && request->bmRequestType == 0x00) {
for(uint8_t epnum=1; epnum<CFG_TUH_ENDPOINT_MAX; epnum++) {
for(uint8_t dir=0; dir<2; dir++) {
tuh_edpt_abort_xfer(daddr, tu_edpt_addr(epnum, dir));
}
}
}
_control_xfer_complete(daddr, result);
break;
}
default: return false;
}
}
return true;
}
//--------------------------------------------------------------------+
//
//--------------------------------------------------------------------+
bool tuh_edpt_xfer(tuh_xfer_t* xfer) {
uint8_t const daddr = xfer->daddr;
uint8_t const ep_addr = xfer->ep_addr;
TU_VERIFY(daddr && ep_addr);
TU_VERIFY(usbh_edpt_claim(daddr, ep_addr));
if (!usbh_edpt_xfer_with_callback(daddr, ep_addr, xfer->buffer, (uint16_t) xfer->buflen,
xfer->complete_cb, xfer->user_data)) {
usbh_edpt_release(daddr, ep_addr);
return false;
}
return true;
}
bool tuh_edpt_abort_xfer(uint8_t daddr, uint8_t ep_addr) {
usbh_device_t* dev = get_device(daddr);
TU_VERIFY(dev);
TU_LOG_USBH("[%u] Aborted transfer on EP %02X\r\n", daddr, ep_addr);
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
if ( epnum == 0 ) {
// control transfer: only 1 control at a time, check if we are aborting the current one
TU_VERIFY(daddr == _ctrl_xfer.daddr && _ctrl_xfer.stage != CONTROL_STAGE_IDLE);
TU_VERIFY(hcd_edpt_abort_xfer(dev->rhport, daddr, ep_addr));
// reset control transfer state to idle
_set_control_xfer_stage(CONTROL_STAGE_IDLE);
} else {
// non-control skip if not busy
TU_VERIFY(dev->ep_status[epnum][dir].busy);
TU_VERIFY(hcd_edpt_abort_xfer(dev->rhport, daddr, ep_addr));
// mark as ready and release endpoint if transfer is aborted
dev->ep_status[epnum][dir].busy = false;
tu_edpt_release(&dev->ep_status[epnum][dir], _usbh_mutex);
}
return true;
}
//--------------------------------------------------------------------+
// USBH API For Class Driver
//--------------------------------------------------------------------+
uint8_t usbh_get_rhport(uint8_t dev_addr) {
usbh_device_t *dev = get_device(dev_addr);
return dev ? dev->rhport : _dev0.rhport;
}
uint8_t *usbh_get_enum_buf(void) {
return _usbh_ctrl_buf;
}
void usbh_int_set(bool enabled) {
// TODO all host controller if multiple are used since they shared the same event queue
if (enabled) {
hcd_int_enable(_usbh_controller);
} else {
hcd_int_disable(_usbh_controller);
}
}
void usbh_defer_func(osal_task_func_t func, void *param, bool in_isr) {
hcd_event_t event = { 0 };
event.event_id = USBH_EVENT_FUNC_CALL;
event.func_call.func = func;
event.func_call.param = param;
queue_event(&event, in_isr);
}
//--------------------------------------------------------------------+
// Endpoint API
//--------------------------------------------------------------------+
// Claim an endpoint for transfer
bool usbh_edpt_claim(uint8_t dev_addr, uint8_t ep_addr) {
// Note: addr0 only use tuh_control_xfer
usbh_device_t* dev = get_device(dev_addr);
TU_ASSERT(dev && dev->connected);
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
TU_VERIFY(tu_edpt_claim(&dev->ep_status[epnum][dir], _usbh_mutex));
TU_LOG_USBH("[%u] Claimed EP 0x%02x\r\n", dev_addr, ep_addr);
return true;
}
// Release an claimed endpoint due to failed transfer attempt
bool usbh_edpt_release(uint8_t dev_addr, uint8_t ep_addr) {
// Note: addr0 only use tuh_control_xfer
usbh_device_t* dev = get_device(dev_addr);
TU_VERIFY(dev && dev->connected);
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
TU_VERIFY(tu_edpt_release(&dev->ep_status[epnum][dir], _usbh_mutex));
TU_LOG_USBH("[%u] Released EP 0x%02x\r\n", dev_addr, ep_addr);
return true;
}
// Submit an transfer
// TODO call usbh_edpt_release if failed
bool usbh_edpt_xfer_with_callback(uint8_t dev_addr, uint8_t ep_addr, uint8_t* buffer, uint16_t total_bytes,
tuh_xfer_cb_t complete_cb, uintptr_t user_data) {
(void) complete_cb;
(void) user_data;
usbh_device_t* dev = get_device(dev_addr);
TU_VERIFY(dev);
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
tu_edpt_state_t* ep_state = &dev->ep_status[epnum][dir];
TU_LOG_USBH(" Queue EP %02X with %u bytes ... \r\n", ep_addr, total_bytes);
// Attempt to transfer on a busy endpoint, sound like an race condition !
TU_ASSERT(ep_state->busy == 0);
// Set busy first since the actual transfer can be complete before hcd_edpt_xfer()
// could return and USBH task can preempt and clear the busy
ep_state->busy = 1;
#if CFG_TUH_API_EDPT_XFER
dev->ep_callback[epnum][dir].complete_cb = complete_cb;
dev->ep_callback[epnum][dir].user_data = user_data;
#endif
if (hcd_edpt_xfer(dev->rhport, dev_addr, ep_addr, buffer, total_bytes)) {
TU_LOG_USBH("OK\r\n");
return true;
} else {
// HCD error, mark endpoint as ready to allow next transfer
ep_state->busy = 0;
ep_state->claimed = 0;
TU_LOG1("Failed\r\n");
// TU_BREAKPOINT();
return false;
}
}
static bool usbh_edpt_control_open(uint8_t dev_addr, uint8_t max_packet_size) {
TU_LOG_USBH("[%u:%u] Open EP0 with Size = %u\r\n", usbh_get_rhport(dev_addr), dev_addr, max_packet_size);
tusb_desc_endpoint_t ep0_desc = {
.bLength = sizeof(tusb_desc_endpoint_t),
.bDescriptorType = TUSB_DESC_ENDPOINT,
.bEndpointAddress = 0,
.bmAttributes = { .xfer = TUSB_XFER_CONTROL },
.wMaxPacketSize = max_packet_size,
.bInterval = 0
};
return hcd_edpt_open(usbh_get_rhport(dev_addr), dev_addr, &ep0_desc);
}
bool tuh_edpt_open(uint8_t dev_addr, tusb_desc_endpoint_t const* desc_ep) {
TU_ASSERT(tu_edpt_validate(desc_ep, tuh_speed_get(dev_addr)));
return hcd_edpt_open(usbh_get_rhport(dev_addr), dev_addr, desc_ep);
}
bool usbh_edpt_busy(uint8_t dev_addr, uint8_t ep_addr) {
usbh_device_t* dev = get_device(dev_addr);
TU_VERIFY(dev);
uint8_t const epnum = tu_edpt_number(ep_addr);
uint8_t const dir = tu_edpt_dir(ep_addr);
return dev->ep_status[epnum][dir].busy;
}
//--------------------------------------------------------------------+
// HCD Event Handler
//--------------------------------------------------------------------+
void hcd_devtree_get_info(uint8_t dev_addr, hcd_devtree_info_t* devtree_info) {
usbh_device_t const* dev = get_device(dev_addr);
if (dev) {
devtree_info->rhport = dev->rhport;
devtree_info->hub_addr = dev->hub_addr;
devtree_info->hub_port = dev->hub_port;
devtree_info->speed = dev->speed;
} else {
devtree_info->rhport = _dev0.rhport;
devtree_info->hub_addr = _dev0.hub_addr;
devtree_info->hub_port = _dev0.hub_port;
devtree_info->speed = _dev0.speed;
}
}
TU_ATTR_FAST_FUNC void hcd_event_handler(hcd_event_t const* event, bool in_isr) {
switch (event->event_id) {
case HCD_EVENT_DEVICE_REMOVE:
// FIXME device remove from a hub need an HCD API for hcd to free up endpoint
// mark device as removing to prevent further xfer before the event is processed in usbh task
// Check if dev0 is removed
if ((event->rhport == _dev0.rhport) && (event->connection.hub_addr == _dev0.hub_addr) &&
(event->connection.hub_port == _dev0.hub_port)) {
_dev0.enumerating = 0;
}
break;
default: break;
}
queue_event(event, in_isr);
}
//--------------------------------------------------------------------+
// Descriptors Async
//--------------------------------------------------------------------+
// generic helper to get a descriptor
// if blocking, user_data is pointed to xfer_result
static bool _get_descriptor(uint8_t daddr, uint8_t type, uint8_t index, uint16_t language_id, void* buffer, uint16_t len,
tuh_xfer_cb_t complete_cb, uintptr_t user_data) {
tusb_control_request_t const request = {
.bmRequestType_bit = {
.recipient = TUSB_REQ_RCPT_DEVICE,
.type = TUSB_REQ_TYPE_STANDARD,
.direction = TUSB_DIR_IN
},
.bRequest = TUSB_REQ_GET_DESCRIPTOR,
.wValue = tu_htole16( TU_U16(type, index) ),
.wIndex = tu_htole16(language_id),
.wLength = tu_htole16(len)
};
tuh_xfer_t xfer = {
.daddr = daddr,
.ep_addr = 0,
.setup = &request,
.buffer = buffer,
.complete_cb = complete_cb,
.user_data = user_data
};
return tuh_control_xfer(&xfer);
}
bool tuh_descriptor_get(uint8_t daddr, uint8_t type, uint8_t index, void* buffer, uint16_t len,
tuh_xfer_cb_t complete_cb, uintptr_t user_data) {
return _get_descriptor(daddr, type, index, 0x0000, buffer, len, complete_cb, user_data);
}
bool tuh_descriptor_get_device(uint8_t daddr, void* buffer, uint16_t len,
tuh_xfer_cb_t complete_cb, uintptr_t user_data) {
len = tu_min16(len, sizeof(tusb_desc_device_t));
return tuh_descriptor_get(daddr, TUSB_DESC_DEVICE, 0, buffer, len, complete_cb, user_data);
}
bool tuh_descriptor_get_configuration(uint8_t daddr, uint8_t index, void* buffer, uint16_t len,
tuh_xfer_cb_t complete_cb, uintptr_t user_data) {
return tuh_descriptor_get(daddr, TUSB_DESC_CONFIGURATION, index, buffer, len, complete_cb, user_data);
}
//------------- String Descriptor -------------//