source: mainline/uspace/drv/usbhub/usbhub.c@ 86341e2

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 86341e2 was ad4562c2, checked in by Lubos Slovak <lubos.slovak@…>, 15 years ago

Changed API for getting descriptors.

  • Changed usb_request_get_descriptor() and usb_request_get_descriptor_alloc().
  • Added parameter recipient, specifying if the descriptor is associated with device, interface, endpoint or other.
  • Modified all calls to it accordingly.

TODO not done in usbhid driver yet, but should not be used now.
  • Property mode set to 100644
File size: 20.7 KB
Line 
1/*
2 * Copyright (c) 2010 Matus Dekanek
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28/** @addtogroup drvusbhub
29 * @{
30 */
31/** @file
32 * @brief usb hub main functionality
33 */
34
35#include <ddf/driver.h>
36#include <bool.h>
37#include <errno.h>
38#include <str_error.h>
39
40#include <usb_iface.h>
41#include <usb/ddfiface.h>
42#include <usb/descriptor.h>
43#include <usb/recognise.h>
44#include <usb/request.h>
45#include <usb/classes/hub.h>
46#include <stdio.h>
47
48#include "usbhub.h"
49#include "usbhub_private.h"
50#include "port_status.h"
51#include "usb/usb.h"
52#include "usb/pipes.h"
53#include "usb/classes/classes.h"
54
55static ddf_dev_ops_t hub_device_ops = {
56 .interfaces[USB_DEV_IFACE] = &usb_iface_hub_impl
57};
58
59/** Hub status-change endpoint description
60 *
61 * For more see usb hub specification in 11.15.1 of
62 */
63static usb_endpoint_description_t status_change_endpoint_description = {
64 .transfer_type = USB_TRANSFER_INTERRUPT,
65 .direction = USB_DIRECTION_IN,
66 .interface_class = USB_CLASS_HUB,
67 .interface_subclass = 0,
68 .interface_protocol = 0,
69 .flags = 0
70};
71
72int usb_hub_control_loop(void * hub_info_param){
73 usb_hub_info_t * hub_info = (usb_hub_info_t*)hub_info_param;
74 while(true){
75 usb_hub_check_hub_changes(hub_info);
76 async_usleep(1000 * 1000 );/// \TODO proper number once
77 }
78 return 0;
79}
80
81
82//*********************************************
83//
84// hub driver code, initialization
85//
86//*********************************************
87
88/**
89 * Initialize connnections to host controller, device, and device
90 * control endpoint
91 * @param hub
92 * @param device
93 * @return
94 */
95static int usb_hub_init_communication(usb_hub_info_t * hub){
96 usb_log_debug("Initializing hub USB communication (hub->device->handle=%zu).\n", hub->device->handle);
97 int opResult;
98 opResult = usb_device_connection_initialize_from_device(
99 &hub->device_connection,
100 hub->device);
101 if(opResult != EOK){
102 dprintf(USB_LOG_LEVEL_ERROR,
103 "could not initialize connection to hc, errno %d",opResult);
104 return opResult;
105 }
106 usb_log_debug("Initializing USB wire abstraction.\n");
107 opResult = usb_hc_connection_initialize_from_device(&hub->connection,
108 hub->device);
109 if(opResult != EOK){
110 dprintf(USB_LOG_LEVEL_ERROR,
111 "could not initialize connection to device, errno %d",opResult);
112 return opResult;
113 }
114 usb_log_debug("Initializing default control pipe.\n");
115 opResult = usb_endpoint_pipe_initialize_default_control(&hub->endpoints.control,
116 &hub->device_connection);
117 if(opResult != EOK){
118 dprintf(USB_LOG_LEVEL_ERROR,
119 "could not initialize connection to device endpoint, errno %d",opResult);
120 }
121 return opResult;
122}
123
124/**
125 * When entering this function, hub->endpoints.control should be active.
126 * @param hub
127 * @return
128 */
129static int usb_hub_process_configuration_descriptors(
130 usb_hub_info_t * hub){
131 if(hub==NULL) {
132 return EINVAL;
133 }
134 int opResult;
135
136 //device descriptor
137 usb_standard_device_descriptor_t std_descriptor;
138 opResult = usb_request_get_device_descriptor(&hub->endpoints.control,
139 &std_descriptor);
140 if(opResult!=EOK){
141 dprintf(USB_LOG_LEVEL_ERROR, "could not get device descriptor, %d",opResult);
142 return opResult;
143 }
144 dprintf(USB_LOG_LEVEL_INFO, "hub has %d configurations",
145 std_descriptor.configuration_count);
146 if(std_descriptor.configuration_count<1){
147 dprintf(USB_LOG_LEVEL_ERROR, "THERE ARE NO CONFIGURATIONS AVAILABLE");
148 //shouldn`t I return?
149 }
150
151 //configuration descriptor
152 /// \TODO check other configurations?
153 usb_standard_configuration_descriptor_t config_descriptor;
154 opResult = usb_request_get_bare_configuration_descriptor(
155 &hub->endpoints.control, 0,
156 &config_descriptor);
157 if(opResult!=EOK){
158 dprintf(USB_LOG_LEVEL_ERROR, "could not get configuration descriptor, %d",opResult);
159 return opResult;
160 }
161 //set configuration
162 opResult = usb_request_set_configuration(&hub->endpoints.control,
163 config_descriptor.configuration_number);
164
165 if (opResult != EOK) {
166 dprintf(USB_LOG_LEVEL_ERROR,
167 "something went wrong when setting hub`s configuration, %d",
168 opResult);
169 return opResult;
170 }
171 dprintf(USB_LOG_LEVEL_DEBUG, "\tused configuration %d",
172 config_descriptor.configuration_number);
173
174 //full configuration descriptor
175 size_t transferred = 0;
176 uint8_t * descriptors = (uint8_t *)malloc(config_descriptor.total_length);
177 if (descriptors == NULL) {
178 dprintf(USB_LOG_LEVEL_ERROR, "insufficient memory");
179 return ENOMEM;
180 }
181 opResult = usb_request_get_full_configuration_descriptor(&hub->endpoints.control,
182 0, descriptors,
183 config_descriptor.total_length, &transferred);
184 if(opResult!=EOK){
185 free(descriptors);
186 dprintf(USB_LOG_LEVEL_ERROR,
187 "could not get full configuration descriptor, %d",opResult);
188 return opResult;
189 }
190 if (transferred != config_descriptor.total_length) {
191 dprintf(USB_LOG_LEVEL_ERROR,
192 "received incorrect full configuration descriptor");
193 return ELIMIT;
194 }
195
196 usb_endpoint_mapping_t endpoint_mapping[1] = {
197 {
198 .pipe = &hub->endpoints.status_change,
199 .description = &status_change_endpoint_description,
200 .interface_no =
201 usb_device_get_assigned_interface(hub->device)
202 }
203 };
204 opResult = usb_endpoint_pipe_initialize_from_configuration(
205 endpoint_mapping, 1,
206 descriptors, config_descriptor.total_length,
207 &hub->device_connection);
208 if (opResult != EOK) {
209 dprintf(USB_LOG_LEVEL_ERROR,
210 "Failed to initialize status change pipe: %s",
211 str_error(opResult));
212 return opResult;
213 }
214 if (!endpoint_mapping[0].present) {
215 dprintf(USB_LOG_LEVEL_ERROR,"Not accepting device, " \
216 "cannot understand what is happenning");
217 return EREFUSED;
218 }
219
220 free(descriptors);
221 return EOK;
222
223}
224
225
226/**
227 * Create hub representation from device information.
228 * @param device
229 * @return pointer to created structure or NULL in case of error
230 */
231usb_hub_info_t * usb_create_hub_info(ddf_dev_t * device) {
232 usb_hub_info_t* result = usb_new(usb_hub_info_t);
233 result->device = device;
234 int opResult;
235 opResult = usb_hub_init_communication(result);
236 if(opResult != EOK){
237 free(result);
238 return NULL;
239 }
240
241 //result->device = device;
242 result->port_count = -1;
243 result->device = device;
244
245 //result->usb_device = usb_new(usb_hcd_attached_device_info_t);
246 size_t received_size;
247
248 // get hub descriptor
249 dprintf(USB_LOG_LEVEL_DEBUG, "creating serialized descripton");
250 void * serialized_descriptor = malloc(USB_HUB_MAX_DESCRIPTOR_SIZE);
251 usb_hub_descriptor_t * descriptor;
252 dprintf(USB_LOG_LEVEL_DEBUG, "starting control transaction");
253 usb_endpoint_pipe_start_session(&result->endpoints.control);
254 opResult = usb_request_get_descriptor(&result->endpoints.control,
255 USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_DEVICE,
256 USB_DESCTYPE_HUB,
257 0, 0, serialized_descriptor,
258 USB_HUB_MAX_DESCRIPTOR_SIZE, &received_size);
259 usb_endpoint_pipe_end_session(&result->endpoints.control);
260
261 if (opResult != EOK) {
262 dprintf(USB_LOG_LEVEL_ERROR, "failed when receiving hub descriptor, badcode = %d",opResult);
263 free(serialized_descriptor);
264 return result;
265 }
266 dprintf(USB_LOG_LEVEL_DEBUG2, "deserializing descriptor");
267 descriptor = usb_deserialize_hub_desriptor(serialized_descriptor);
268 if(descriptor==NULL){
269 dprintf(USB_LOG_LEVEL_WARNING, "could not deserialize descriptor ");
270 result->port_count = 1;///\TODO this code is only for debug!!!
271 return result;
272 }
273
274 dprintf(USB_LOG_LEVEL_INFO, "setting port count to %d",descriptor->ports_count);
275 result->port_count = descriptor->ports_count;
276 result->attached_devs = (usb_hc_attached_device_t*)
277 malloc((result->port_count+1) * sizeof(usb_hc_attached_device_t));
278 int i;
279 for(i=0;i<result->port_count+1;++i){
280 result->attached_devs[i].handle=0;
281 result->attached_devs[i].address=0;
282 }
283 dprintf(USB_LOG_LEVEL_DEBUG2, "freeing data");
284 free(serialized_descriptor);
285 free(descriptor->devices_removable);
286 free(descriptor);
287
288 //finish
289
290 dprintf(USB_LOG_LEVEL_INFO, "hub info created");
291
292 return result;
293}
294
295/**
296 * Create hub representation and add it into hub list
297 * @param dev
298 * @return
299 */
300int usb_add_hub_device(ddf_dev_t *dev) {
301 dprintf(USB_LOG_LEVEL_INFO, "add_hub_device(handle=%d)", (int) dev->handle);
302
303 //dev->ops = &hub_device_ops;
304 (void) hub_device_ops;
305
306 usb_hub_info_t * hub_info = usb_create_hub_info(dev);
307
308 int opResult;
309
310 //perform final configurations
311 usb_endpoint_pipe_start_session(&hub_info->endpoints.control);
312 // process descriptors
313 opResult = usb_hub_process_configuration_descriptors(hub_info);
314 if(opResult != EOK){
315 dprintf(USB_LOG_LEVEL_ERROR,"could not get condiguration descriptors, %d",
316 opResult);
317 return opResult;
318 }
319 //power ports
320 usb_device_request_setup_packet_t request;
321 int port;
322 for (port = 1; port < hub_info->port_count+1; ++port) {
323 usb_hub_set_power_port_request(&request, port);
324 opResult = usb_endpoint_pipe_control_write(&hub_info->endpoints.control,
325 &request,sizeof(usb_device_request_setup_packet_t), NULL, 0);
326 dprintf(USB_LOG_LEVEL_INFO, "powering port %d",port);
327 if (opResult != EOK) {
328 dprintf(USB_LOG_LEVEL_WARNING, "something went wrong when setting hub`s %dth port", port);
329 }
330 }
331 //ports powered, hub seems to be enabled
332 usb_endpoint_pipe_end_session(&hub_info->endpoints.control);
333
334 //add the hub to list
335 //is this needed now?
336 fibril_mutex_lock(&usb_hub_list_lock);
337 usb_lst_append(&usb_hub_list, hub_info);
338 fibril_mutex_unlock(&usb_hub_list_lock);
339 dprintf(USB_LOG_LEVEL_DEBUG, "hub info added to list");
340
341 dprintf(USB_LOG_LEVEL_DEBUG, "adding to ddf");
342 ddf_fun_t *hub_fun = ddf_fun_create(dev, fun_exposed, "hub");
343 assert(hub_fun != NULL);
344 hub_fun->ops = NULL;
345
346 int rc = ddf_fun_bind(hub_fun);
347 assert(rc == EOK);
348 rc = ddf_fun_add_to_class(hub_fun, "hub");
349 assert(rc == EOK);
350
351 fid_t fid = fibril_create(usb_hub_control_loop, hub_info);
352 if (fid == 0) {
353 dprintf(USB_LOG_LEVEL_ERROR,
354 ": failed to start monitoring fibril for new hub");
355 return ENOMEM;
356 }
357 fibril_add_ready(fid);
358
359 dprintf(USB_LOG_LEVEL_DEBUG, "hub fibril created");
360 //(void)hub_info;
361 //usb_hub_check_hub_changes();
362
363 dprintf(USB_LOG_LEVEL_INFO, "hub dev added");
364 //address is lost...
365 dprintf(USB_LOG_LEVEL_DEBUG, "\taddress %d, has %d ports ",
366 //hub_info->endpoints.control.,
367 hub_info->port_count);
368
369 return EOK;
370 //return ENOTSUP;
371}
372
373
374//*********************************************
375//
376// hub driver code, main loop
377//
378//*********************************************
379
380/**
381 * Reset the port with new device and reserve the default address.
382 * @param hc
383 * @param port
384 * @param target
385 */
386static void usb_hub_init_add_device(usb_hub_info_t * hub, uint16_t port) {
387 usb_device_request_setup_packet_t request;
388 int opResult;
389 dprintf(USB_LOG_LEVEL_INFO, "some connection changed");
390 assert(hub->endpoints.control.hc_phone);
391 //get default address
392 //opResult = usb_drv_reserve_default_address(hc);
393 opResult = usb_hc_reserve_default_address(&hub->connection, USB_SPEED_LOW);
394
395 if (opResult != EOK) {
396 dprintf(USB_LOG_LEVEL_WARNING,
397 "cannot assign default address, it is probably used %d",opResult);
398 return;
399 }
400 //reset port
401 usb_hub_set_reset_port_request(&request, port);
402 opResult = usb_endpoint_pipe_control_write(
403 &hub->endpoints.control,
404 &request,sizeof(usb_device_request_setup_packet_t),
405 NULL, 0
406 );
407 if (opResult != EOK) {
408 dprintf(USB_LOG_LEVEL_ERROR,
409 "something went wrong when reseting a port %d",opResult);
410 //usb_hub_release_default_address(hc);
411 usb_hc_release_default_address(&hub->connection);
412 }
413}
414
415/**
416 * Finalize adding new device after port reset
417 * @param hc
418 * @param port
419 * @param target
420 */
421static void usb_hub_finalize_add_device( usb_hub_info_t * hub,
422 uint16_t port, bool isLowSpeed) {
423
424 int opResult;
425 dprintf(USB_LOG_LEVEL_INFO, "finalizing add device");
426 opResult = usb_hub_clear_port_feature(&hub->endpoints.control,
427 port, USB_HUB_FEATURE_C_PORT_RESET);
428
429 if (opResult != EOK) {
430 dprintf(USB_LOG_LEVEL_ERROR, "failed to clear port reset feature");
431 usb_hc_release_default_address(&hub->connection);
432 return;
433 }
434 //create connection to device
435 usb_endpoint_pipe_t new_device_pipe;
436 usb_device_connection_t new_device_connection;
437 usb_device_connection_initialize_on_default_address(
438 &new_device_connection,
439 &hub->connection
440 );
441 usb_endpoint_pipe_initialize_default_control(
442 &new_device_pipe,
443 &new_device_connection);
444 /// \TODO get highspeed info
445 usb_speed_t speed = isLowSpeed?USB_SPEED_LOW:USB_SPEED_FULL;
446
447
448 /* Request address from host controller. */
449 usb_address_t new_device_address = usb_hc_request_address(
450 &hub->connection,
451 speed/// \TODO fullspeed??
452 );
453 if (new_device_address < 0) {
454 dprintf(USB_LOG_LEVEL_ERROR, "failed to get free USB address");
455 opResult = new_device_address;
456 usb_hc_release_default_address(&hub->connection);
457 return;
458 }
459 dprintf(USB_LOG_LEVEL_INFO, "setting new address %d",new_device_address);
460 //opResult = usb_drv_req_set_address(hc, USB_ADDRESS_DEFAULT,
461 // new_device_address);
462 usb_endpoint_pipe_start_session(&new_device_pipe);
463 opResult = usb_request_set_address(&new_device_pipe,new_device_address);
464 usb_endpoint_pipe_end_session(&new_device_pipe);
465 if (opResult != EOK) {
466 dprintf(USB_LOG_LEVEL_ERROR,
467 "could not set address for new device %d",opResult);
468 usb_hc_release_default_address(&hub->connection);
469 return;
470 }
471
472
473 //opResult = usb_hub_release_default_address(hc);
474 opResult = usb_hc_release_default_address(&hub->connection);
475 if(opResult!=EOK){
476 return;
477 }
478
479 devman_handle_t child_handle;
480 //??
481 opResult = usb_device_register_child_in_devman(new_device_address,
482 hub->connection.hc_handle, hub->device, &child_handle,
483 NULL, NULL, NULL);
484
485 if (opResult != EOK) {
486 dprintf(USB_LOG_LEVEL_ERROR,
487 "could not start driver for new device %d",opResult);
488 return;
489 }
490 hub->attached_devs[port].handle = child_handle;
491 hub->attached_devs[port].address = new_device_address;
492
493 //opResult = usb_drv_bind_address(hc, new_device_address, child_handle);
494 opResult = usb_hc_register_device(
495 &hub->connection,
496 &hub->attached_devs[port]);
497 if (opResult != EOK) {
498 dprintf(USB_LOG_LEVEL_ERROR,
499 "could not assign address of device in hcd %d",opResult);
500 return;
501 }
502 dprintf(USB_LOG_LEVEL_INFO, "new device address %d, handle %zu",
503 new_device_address, child_handle);
504
505}
506
507/**
508 * Unregister device address in hc
509 * @param hc
510 * @param port
511 * @param target
512 */
513static void usb_hub_removed_device(
514 usb_hub_info_t * hub,uint16_t port) {
515 //usb_device_request_setup_packet_t request;
516 int opResult;
517
518 /** \TODO remove device from device manager - not yet implemented in
519 * devide manager
520 */
521
522 //close address
523 if(hub->attached_devs[port].address!=0){
524 //opResult = usb_drv_release_address(hc,hub->attached_devs[port].address);
525 opResult = usb_hc_unregister_device(
526 &hub->connection, hub->attached_devs[port].address);
527 if(opResult != EOK) {
528 dprintf(USB_LOG_LEVEL_WARNING, "could not release address of " \
529 "removed device: %d", opResult);
530 }
531 hub->attached_devs[port].address = 0;
532 hub->attached_devs[port].handle = 0;
533 }else{
534 dprintf(USB_LOG_LEVEL_WARNING, "this is strange, disconnected device had no address");
535 //device was disconnected before it`s port was reset - return default address
536 //usb_drv_release_default_address(hc);
537 usb_hc_release_default_address(&hub->connection);
538 }
539}
540
541
542/**
543 *Process over current condition on port.
544 *
545 * Turn off the power on the port.
546 *
547 * @param hub
548 * @param port
549 */
550static void usb_hub_over_current( usb_hub_info_t * hub,
551 uint16_t port){
552 int opResult;
553 opResult = usb_hub_clear_port_feature(&hub->endpoints.control,
554 port, USB_HUB_FEATURE_PORT_POWER);
555 if(opResult!=EOK){
556 dprintf(USB_LOG_LEVEL_ERROR, "cannot power off port %d; %d",
557 port, opResult);
558 }
559}
560
561/**
562 * Process interrupts on given hub port
563 * @param hc
564 * @param port
565 * @param target
566 */
567static void usb_hub_process_interrupt(usb_hub_info_t * hub,
568 uint16_t port) {
569 dprintf(USB_LOG_LEVEL_DEBUG, "interrupt at port %d", port);
570 //determine type of change
571 usb_endpoint_pipe_t *pipe = &hub->endpoints.control;
572
573 int opResult;
574
575 usb_port_status_t status;
576 size_t rcvd_size;
577 usb_device_request_setup_packet_t request;
578 //int opResult;
579 usb_hub_set_port_status_request(&request, port);
580 //endpoint 0
581
582 opResult = usb_endpoint_pipe_control_read(
583 pipe,
584 &request, sizeof(usb_device_request_setup_packet_t),
585 &status, 4, &rcvd_size
586 );
587 if (opResult != EOK) {
588 dprintf(USB_LOG_LEVEL_ERROR, "could not get port status");
589 return;
590 }
591 if (rcvd_size != sizeof (usb_port_status_t)) {
592 dprintf(USB_LOG_LEVEL_ERROR, "received status has incorrect size");
593 return;
594 }
595 //something connected/disconnected
596 if (usb_port_connect_change(&status)) {
597 opResult = usb_hub_clear_port_feature(pipe,
598 port, USB_HUB_FEATURE_C_PORT_CONNECTION);
599 // TODO: check opResult
600 if (usb_port_dev_connected(&status)) {
601 dprintf(USB_LOG_LEVEL_INFO, "some connection changed");
602 usb_hub_init_add_device(hub, port);
603 } else {
604 usb_hub_removed_device(hub, port);
605 }
606 }
607 //over current
608 if (usb_port_overcurrent_change(&status)) {
609 //check if it was not auto-resolved
610 if(usb_port_over_current(&status)){
611 usb_hub_over_current(hub,port);
612 }else{
613 dprintf(USB_LOG_LEVEL_INFO,
614 "over current condition was auto-resolved on port %d",port);
615 }
616 }
617 //port reset
618 if (usb_port_reset_completed(&status)) {
619 dprintf(USB_LOG_LEVEL_INFO, "port reset complete");
620 if (usb_port_enabled(&status)) {
621 usb_hub_finalize_add_device(hub, port, usb_port_low_speed(&status));
622 } else {
623 dprintf(USB_LOG_LEVEL_WARNING, "port reset, but port still not enabled");
624 }
625 }
626
627 usb_port_set_connect_change(&status, false);
628 usb_port_set_reset(&status, false);
629 usb_port_set_reset_completed(&status, false);
630 usb_port_set_dev_connected(&status, false);
631 if (status>>16) {
632 dprintf(USB_LOG_LEVEL_INFO, "there was some unsupported change on port %d: %X",port,status);
633
634 }
635 /// \TODO handle other changes
636}
637
638/**
639 * Check changes on particular hub
640 * @param hub_info_param
641 */
642void usb_hub_check_hub_changes(usb_hub_info_t * hub_info){
643 int opResult;
644 opResult = usb_endpoint_pipe_start_session(&hub_info->endpoints.status_change);
645 if(opResult != EOK){
646 dprintf(USB_LOG_LEVEL_ERROR,
647 "could not initialize communication for hub; %d", opResult);
648 return;
649 }
650
651 size_t port_count = hub_info->port_count;
652
653 /// FIXME: count properly
654 size_t byte_length = ((port_count+1) / 8) + 1;
655 void *change_bitmap = malloc(byte_length);
656 size_t actual_size;
657
658 /*
659 * Send the request.
660 */
661 opResult = usb_endpoint_pipe_read(
662 &hub_info->endpoints.status_change,
663 change_bitmap, byte_length, &actual_size
664 );
665
666 if (opResult != EOK) {
667 free(change_bitmap);
668 dprintf(USB_LOG_LEVEL_WARNING, "something went wrong while getting status of hub");
669 usb_endpoint_pipe_end_session(&hub_info->endpoints.status_change);
670 return;
671 }
672 unsigned int port;
673 opResult = usb_endpoint_pipe_start_session(&hub_info->endpoints.control);
674 if(opResult!=EOK){
675 dprintf(USB_LOG_LEVEL_ERROR, "could not start control pipe session %d",
676 opResult);
677 usb_endpoint_pipe_end_session(&hub_info->endpoints.status_change);
678 return;
679 }
680 opResult = usb_hc_connection_open(&hub_info->connection);
681 if(opResult!=EOK){
682 dprintf(USB_LOG_LEVEL_ERROR, "could not start host controller session %d",
683 opResult);
684 usb_endpoint_pipe_end_session(&hub_info->endpoints.control);
685 usb_endpoint_pipe_end_session(&hub_info->endpoints.status_change);
686 return;
687 }
688
689 ///todo, opresult check, pre obe konekce
690 for (port = 1; port < port_count+1; ++port) {
691 bool interrupt =
692 (((uint8_t*) change_bitmap)[port / 8] >> (port % 8)) % 2;
693 if (interrupt) {
694 usb_hub_process_interrupt(
695 hub_info, port);
696 }
697 }
698 usb_hc_connection_close(&hub_info->connection);
699 usb_endpoint_pipe_end_session(&hub_info->endpoints.control);
700 usb_endpoint_pipe_end_session(&hub_info->endpoints.status_change);
701 free(change_bitmap);
702}
703
704
705
706/**
707 * @}
708 */
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