source: mainline/uspace/drv/usbhub/usbhub.c@ 3eaa5a5

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 3eaa5a5 was 578a2547, checked in by Vojtech Horky <vojtechhorky@…>, 15 years ago

Hub driver uses standard wrapper for new devices

To allow usage of the standard function, the port reset signalling
must be done through condition variable.
  • Property mode set to 100644
File size: 23.3 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
55
56//static void usb_hub_init_add_device(usb_hub_info_t * hub, uint16_t port,
57// usb_speed_t speed);
58
59static int usb_hub_trigger_connecting_non_removable_devices(
60 usb_hub_info_t * hub, usb_hub_descriptor_t * descriptor);
61
62#if 0
63/**
64 * control loop running in hub`s fibril
65 *
66 * Hub`s fibril periodically asks for changes on hub and if needded calls
67 * change handling routine.
68 * @warning currently hub driver asks for changes once a second
69 * @param hub_info_param hub representation pointer
70 * @return zero
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 int errorCode = EOK;
75
76 while(errorCode == EOK){
77 async_usleep(1000 * 1000 * 10 );/// \TODO proper number once
78 errorCode = usb_hub_check_hub_changes(hub_info);
79 }
80 usb_log_error("something in ctrl loop went wrong, errno %d\n",errorCode);
81
82 return 0;
83}
84#endif
85
86
87//*********************************************
88//
89// hub driver code, initialization
90//
91//*********************************************
92
93/**
94 * create usb_hub_info_t structure
95 *
96 * Does only basic copying of known information into new structure.
97 * @param usb_dev usb device structure
98 * @return basic usb_hub_info_t structure
99 */
100static usb_hub_info_t * usb_hub_info_create(usb_device_t * usb_dev) {
101 usb_hub_info_t * result = usb_new(usb_hub_info_t);
102 if(!result) return NULL;
103 result->usb_device = usb_dev;
104 result->status_change_pipe = usb_dev->pipes[0].pipe;
105 result->control_pipe = &usb_dev->ctrl_pipe;
106 result->is_default_address_used = false;
107 return result;
108}
109
110/**
111 * Load hub-specific information into hub_info structure and process if needed
112 *
113 * Particularly read port count and initialize structure holding port
114 * information. If there are non-removable devices, start initializing them.
115 * This function is hub-specific and should be run only after the hub is
116 * configured using usb_hub_set_configuration function.
117 * @param hub_info hub representation
118 * @return error code
119 */
120static int usb_hub_process_hub_specific_info(usb_hub_info_t * hub_info){
121 // get hub descriptor
122 usb_log_debug("creating serialized descriptor\n");
123 void * serialized_descriptor = malloc(USB_HUB_MAX_DESCRIPTOR_SIZE);
124 usb_hub_descriptor_t * descriptor;
125
126 /* this was one fix of some bug, should not be needed anymore
127 * these lines allow to reset hub once more, it can be used as
128 * brute-force initialization for non-removable devices
129 int opResult = usb_request_set_configuration(&result->endpoints.control, 1);
130 if(opResult!=EOK){
131 usb_log_error("could not set default configuration, errno %d",opResult);
132 return opResult;
133 }
134 */
135 size_t received_size;
136 int opResult = usb_request_get_descriptor(&hub_info->usb_device->ctrl_pipe,
137 USB_REQUEST_TYPE_CLASS, USB_REQUEST_RECIPIENT_DEVICE,
138 USB_DESCTYPE_HUB,
139 0, 0, serialized_descriptor,
140 USB_HUB_MAX_DESCRIPTOR_SIZE, &received_size);
141
142 if (opResult != EOK) {
143 usb_log_error("failed when receiving hub descriptor, badcode = %d\n",
144 opResult);
145 free(serialized_descriptor);
146 return opResult;
147 }
148 usb_log_debug2("deserializing descriptor\n");
149 descriptor = usb_deserialize_hub_desriptor(serialized_descriptor);
150 if(descriptor==NULL){
151 usb_log_warning("could not deserialize descriptor \n");
152 return opResult;
153 }
154 usb_log_debug("setting port count to %d\n",descriptor->ports_count);
155 hub_info->port_count = descriptor->ports_count;
156 hub_info->ports = malloc(sizeof(usb_hub_port_t) * (hub_info->port_count+1));
157 size_t port;
158 for (port = 0; port < hub_info->port_count + 1; port++) {
159 usb_hub_port_init(&hub_info->ports[port]);
160 }
161 //handle non-removable devices
162 usb_hub_trigger_connecting_non_removable_devices(hub_info, descriptor);
163 usb_log_debug2("freeing data\n");
164 free(serialized_descriptor);
165 free(descriptor->devices_removable);
166 free(descriptor);
167 return EOK;
168}
169/**
170 * Set configuration of hub
171 *
172 * Check whether there is at least one configuration and sets the first one.
173 * This function should be run prior to running any hub-specific action.
174 * @param hub_info hub representation
175 * @return error code
176 */
177static int usb_hub_set_configuration(usb_hub_info_t * hub_info){
178 //device descriptor
179 usb_standard_device_descriptor_t *std_descriptor
180 = &hub_info->usb_device->descriptors.device;
181 usb_log_debug("hub has %d configurations\n",
182 std_descriptor->configuration_count);
183 if(std_descriptor->configuration_count<1){
184 usb_log_error("there are no configurations available\n");
185 return EINVAL;
186 }
187
188 usb_standard_configuration_descriptor_t *config_descriptor
189 = (usb_standard_configuration_descriptor_t *)
190 hub_info->usb_device->descriptors.configuration;
191
192 /* Set configuration. */
193 int opResult = usb_request_set_configuration(
194 &hub_info->usb_device->ctrl_pipe,
195 config_descriptor->configuration_number);
196
197 if (opResult != EOK) {
198 usb_log_error("Failed to set hub configuration: %s.\n",
199 str_error(opResult));
200 return opResult;
201 }
202 usb_log_debug("\tused configuration %d\n",
203 config_descriptor->configuration_number);
204
205 return EOK;
206}
207
208/**
209 * Initialize hub device driver fibril
210 *
211 * Creates hub representation and fibril that periodically checks hub`s status.
212 * Hub representation is passed to the fibril.
213 * @param usb_dev generic usb device information
214 * @return error code
215 */
216int usb_hub_add_device(usb_device_t * usb_dev){
217 if(!usb_dev) return EINVAL;
218 usb_hub_info_t * hub_info = usb_hub_info_create(usb_dev);
219 //create hc connection
220 usb_log_debug("Initializing USB wire abstraction.\n");
221 int opResult = usb_hc_connection_initialize_from_device(
222 &hub_info->connection,
223 hub_info->usb_device->ddf_dev);
224 if(opResult != EOK){
225 usb_log_error("could not initialize connection to device, errno %d\n",
226 opResult);
227 free(hub_info);
228 return opResult;
229 }
230
231 usb_pipe_start_session(hub_info->control_pipe);
232 //set hub configuration
233 opResult = usb_hub_set_configuration(hub_info);
234 if(opResult!=EOK){
235 usb_log_error("could not set hub configuration, errno %d\n",opResult);
236 free(hub_info);
237 return opResult;
238 }
239 //get port count and create attached_devs
240 opResult = usb_hub_process_hub_specific_info(hub_info);
241 if(opResult!=EOK){
242 usb_log_error("could not set hub configuration, errno %d\n",opResult);
243 free(hub_info);
244 return opResult;
245 }
246 usb_pipe_end_session(hub_info->control_pipe);
247
248
249 /// \TODO what is this?
250 usb_log_debug("Creating `hub' function.\n");
251 ddf_fun_t *hub_fun = ddf_fun_create(hub_info->usb_device->ddf_dev,
252 fun_exposed, "hub");
253 assert(hub_fun != NULL);
254 hub_fun->ops = NULL;
255
256 int rc = ddf_fun_bind(hub_fun);
257 assert(rc == EOK);
258 rc = ddf_fun_add_to_class(hub_fun, "hub");
259 assert(rc == EOK);
260
261 /*
262 * The processing will require opened control pipe and connection
263 * to the host controller.
264 * It is waste of resources but let's hope there will be less
265 * hubs than the phone limit.
266 * FIXME: with some proper locking over pipes and session
267 * auto destruction, this could work better.
268 */
269 rc = usb_pipe_start_session(&usb_dev->ctrl_pipe);
270 if (rc != EOK) {
271 usb_log_error("Failed to start session on control pipe: %s.\n",
272 str_error(rc));
273 goto leave;
274 }
275 rc = usb_hc_connection_open(&hub_info->connection);
276 if (rc != EOK) {
277 usb_pipe_end_session(&usb_dev->ctrl_pipe);
278 usb_log_error("Failed to open connection to HC: %s.\n",
279 str_error(rc));
280 goto leave;
281 }
282
283 rc = usb_device_auto_poll(hub_info->usb_device, 0,
284 hub_port_changes_callback, ((hub_info->port_count+1) / 8) + 1,
285 NULL, hub_info);
286 if (rc != EOK) {
287 usb_log_error("Failed to create polling fibril: %s.\n",
288 str_error(rc));
289 free(hub_info);
290 return rc;
291 }
292
293 usb_log_info("Controlling hub `%s' (%d ports).\n",
294 hub_info->usb_device->ddf_dev->name, hub_info->port_count);
295 return EOK;
296
297leave:
298 free(hub_info);
299
300 return rc;
301}
302
303
304//*********************************************
305//
306// hub driver code, main loop and port handling
307//
308//*********************************************
309
310/**
311 * triggers actions to connect non0removable devices
312 *
313 * This will trigger operations leading to activated non-removable device.
314 * Control pipe of the hub must be open fo communication.
315 * @param hub hub representation
316 * @param descriptor usb hub descriptor
317 * @return error code
318 */
319static int usb_hub_trigger_connecting_non_removable_devices(usb_hub_info_t * hub,
320 usb_hub_descriptor_t * descriptor)
321{
322 usb_log_info("attaching non-removable devices(if any)\n");
323 usb_device_request_setup_packet_t request;
324 int opResult;
325 size_t rcvd_size;
326 usb_port_status_t status;
327 uint8_t * non_removable_dev_bitmap = descriptor->devices_removable;
328 int port;
329 for(port=1;port<=descriptor->ports_count;++port){
330 bool is_non_removable =
331 ((non_removable_dev_bitmap[port/8]) >> (port%8)) %2;
332 if(is_non_removable){
333 usb_log_debug("non-removable device on port %d\n",port);
334 usb_hub_set_port_status_request(&request, port);
335 opResult = usb_pipe_control_read(
336 hub->control_pipe,
337 &request, sizeof(usb_device_request_setup_packet_t),
338 &status, 4, &rcvd_size
339 );
340 if (opResult != EOK) {
341 usb_log_error("could not get port status of port %d errno:%d\n",
342 port, opResult);
343 return opResult;
344 }
345 //set the status change bit, so it will be noticed in driver loop
346 if(usb_port_dev_connected(&status)){
347 usb_hub_set_disable_port_feature_request(&request, port,
348 USB_HUB_FEATURE_PORT_CONNECTION);
349 opResult = usb_pipe_control_read(
350 hub->control_pipe,
351 &request, sizeof(usb_device_request_setup_packet_t),
352 &status, 4, &rcvd_size
353 );
354 if (opResult != EOK) {
355 usb_log_warning(
356 "could not clear port connection on port %d errno:%d\n",
357 port, opResult);
358 }
359 usb_log_debug("cleared port connection\n");
360 usb_hub_set_enable_port_feature_request(&request, port,
361 USB_HUB_FEATURE_PORT_ENABLE);
362 opResult = usb_pipe_control_read(
363 hub->control_pipe,
364 &request, sizeof(usb_device_request_setup_packet_t),
365 &status, 4, &rcvd_size
366 );
367 if (opResult != EOK) {
368 usb_log_warning(
369 "could not set port enabled on port %d errno:%d\n",
370 port, opResult);
371 }
372 usb_log_debug("port set to enabled - should lead to connection change\n");
373 }
374 }
375 }
376 /// \TODO this is just a debug code
377 for(port=1;port<=descriptor->ports_count;++port){
378 bool is_non_removable =
379 ((non_removable_dev_bitmap[port/8]) >> (port%8)) %2;
380 if(is_non_removable){
381 usb_log_debug("port %d is non-removable\n",port);
382 usb_port_status_t status;
383 size_t rcvd_size;
384 usb_device_request_setup_packet_t request;
385 //int opResult;
386 usb_hub_set_port_status_request(&request, port);
387 //endpoint 0
388 opResult = usb_pipe_control_read(
389 hub->control_pipe,
390 &request, sizeof(usb_device_request_setup_packet_t),
391 &status, 4, &rcvd_size
392 );
393 if (opResult != EOK) {
394 usb_log_error("could not get port status %d\n",opResult);
395 }
396 if (rcvd_size != sizeof (usb_port_status_t)) {
397 usb_log_error("received status has incorrect size\n");
398 }
399 //something connected/disconnected
400 if (usb_port_connect_change(&status)) {
401 usb_log_debug("some connection changed\n");
402 }
403 usb_log_debug("status: %s\n",usb_debug_str_buffer(
404 (uint8_t *)&status,4,4));
405 }
406 }
407 return EOK;
408}
409
410
411/**
412 * release default address used by given hub
413 *
414 * Also unsets hub->is_default_address_used. Convenience wrapper function.
415 * @note hub->connection MUST be open for communication
416 * @param hub hub representation
417 * @return error code
418 */
419static int usb_hub_release_default_address(usb_hub_info_t * hub){
420 int opResult = usb_hc_release_default_address(&hub->connection);
421 if(opResult!=EOK){
422 usb_log_error("could not release default address, errno %d\n",opResult);
423 return opResult;
424 }
425 hub->is_default_address_used = false;
426 return EOK;
427}
428
429#if 0
430/**
431 * Reset the port with new device and reserve the default address.
432 * @param hub hub representation
433 * @param port port number, starting from 1
434 * @param speed transfer speed of attached device, one of low, full or high
435 */
436static void usb_hub_init_add_device(usb_hub_info_t * hub, uint16_t port,
437 usb_speed_t speed) {
438 //if this hub already uses default address, it cannot request it once more
439 if(hub->is_default_address_used) return;
440 usb_log_debug("some connection changed\n");
441 assert(hub->control_pipe->hc_phone);
442 int opResult = usb_hub_clear_port_feature(hub->control_pipe,
443 port, USB_HUB_FEATURE_C_PORT_CONNECTION);
444 if(opResult != EOK){
445 usb_log_warning("could not clear port-change-connection flag\n");
446 }
447 usb_device_request_setup_packet_t request;
448
449 //get default address
450 opResult = usb_hc_reserve_default_address(&hub->connection, speed);
451
452 if (opResult != EOK) {
453 usb_log_warning("cannot assign default address, it is probably used %d\n",
454 opResult);
455 return;
456 }
457 hub->is_default_address_used = true;
458 //reset port
459 usb_hub_set_reset_port_request(&request, port);
460 opResult = usb_pipe_control_write(
461 hub->control_pipe,
462 &request,sizeof(usb_device_request_setup_packet_t),
463 NULL, 0
464 );
465 if (opResult != EOK) {
466 usb_log_error("something went wrong when reseting a port %d\n",opResult);
467 usb_hub_release_default_address(hub);
468 }
469 return;
470}
471#endif
472
473#if 0
474/**
475 * Finalize adding new device after port reset
476 *
477 * Set device`s address and start it`s driver.
478 * @param hub hub representation
479 * @param port port number, starting from 1
480 * @param speed transfer speed of attached device, one of low, full or high
481 */
482static void usb_hub_finalize_add_device( usb_hub_info_t * hub,
483 uint16_t port, usb_speed_t speed) {
484
485 int opResult;
486 usb_log_debug("finalizing add device\n");
487 opResult = usb_hub_clear_port_feature(hub->control_pipe,
488 port, USB_HUB_FEATURE_C_PORT_RESET);
489
490 if (opResult != EOK) {
491 usb_log_error("failed to clear port reset feature\n");
492 usb_hub_release_default_address(hub);
493 return;
494 }
495 //create connection to device
496 usb_pipe_t new_device_pipe;
497 usb_device_connection_t new_device_connection;
498 usb_device_connection_initialize_on_default_address(
499 &new_device_connection,
500 &hub->connection
501 );
502 usb_pipe_initialize_default_control(
503 &new_device_pipe,
504 &new_device_connection);
505 usb_pipe_probe_default_control(&new_device_pipe);
506
507 /* Request address from host controller. */
508 usb_address_t new_device_address = usb_hc_request_address(
509 &hub->connection,
510 speed
511 );
512 if (new_device_address < 0) {
513 usb_log_error("failed to get free USB address\n");
514 opResult = new_device_address;
515 usb_hub_release_default_address(hub);
516 return;
517 }
518 usb_log_debug("setting new address %d\n",new_device_address);
519 //opResult = usb_drv_req_set_address(hc, USB_ADDRESS_DEFAULT,
520 // new_device_address);
521 usb_pipe_start_session(&new_device_pipe);
522 opResult = usb_request_set_address(&new_device_pipe,new_device_address);
523 usb_pipe_end_session(&new_device_pipe);
524 if (opResult != EOK) {
525 usb_log_error("could not set address for new device %d\n",opResult);
526 usb_hub_release_default_address(hub);
527 return;
528 }
529
530 //opResult = usb_hub_release_default_address(hc);
531 opResult = usb_hub_release_default_address(hub);
532 if(opResult!=EOK){
533 return;
534 }
535
536 devman_handle_t child_handle;
537 //??
538 opResult = usb_device_register_child_in_devman(new_device_address,
539 hub->connection.hc_handle, hub->usb_device->ddf_dev, &child_handle,
540 NULL, NULL, NULL);
541
542 if (opResult != EOK) {
543 usb_log_error("could not start driver for new device %d\n",opResult);
544 return;
545 }
546 hub->attached_devs[port].handle = child_handle;
547 hub->attached_devs[port].address = new_device_address;
548
549 //opResult = usb_drv_bind_address(hc, new_device_address, child_handle);
550 opResult = usb_hc_register_device(
551 &hub->connection,
552 &hub->attached_devs[port]);
553 if (opResult != EOK) {
554 usb_log_error("could not assign address of device in hcd %d\n",opResult);
555 return;
556 }
557 usb_log_info("Detected new device on `%s' (port %d), " \
558 "address %d (handle %llu).\n",
559 hub->usb_device->ddf_dev->name, (int) port,
560 new_device_address, child_handle);
561}
562#endif
563
564/**
565 * routine called when a device on port has been removed
566 *
567 * If the device on port had default address, it releases default address.
568 * Otherwise does not do anything, because DDF does not allow to remove device
569 * from it`s device tree.
570 * @param hub hub representation
571 * @param port port number, starting from 1
572 */
573void usb_hub_removed_device(
574 usb_hub_info_t * hub,uint16_t port) {
575
576 int opResult = usb_hub_clear_port_feature(hub->control_pipe,
577 port, USB_HUB_FEATURE_C_PORT_CONNECTION);
578 if(opResult != EOK){
579 usb_log_warning("could not clear port-change-connection flag\n");
580 }
581 /** \TODO remove device from device manager - not yet implemented in
582 * devide manager
583 */
584
585 //close address
586 if(hub->ports[port].attached_device.address >= 0){
587 /*uncomment this code to use it when DDF allows device removal
588 opResult = usb_hc_unregister_device(
589 &hub->connection, hub->attached_devs[port].address);
590 if(opResult != EOK) {
591 dprintf(USB_LOG_LEVEL_WARNING, "could not release address of " \
592 "removed device: %d", opResult);
593 }
594 hub->attached_devs[port].address = 0;
595 hub->attached_devs[port].handle = 0;
596 */
597 }else{
598 usb_log_warning("this is strange, disconnected device had no address\n");
599 //device was disconnected before it`s port was reset - return default address
600 usb_hub_release_default_address(hub);
601 }
602}
603
604
605/**
606 * Process over current condition on port.
607 *
608 * Turn off the power on the port.
609 *
610 * @param hub hub representation
611 * @param port port number, starting from 1
612 */
613void usb_hub_over_current( usb_hub_info_t * hub,
614 uint16_t port){
615 int opResult;
616 opResult = usb_hub_clear_port_feature(hub->control_pipe,
617 port, USB_HUB_FEATURE_PORT_POWER);
618 if(opResult!=EOK){
619 usb_log_error("cannot power off port %d; %d\n",
620 port, opResult);
621 }
622}
623
624#if 0
625/**
626 * Process interrupts on given hub port
627 *
628 * Accepts connection, over current and port reset change.
629 * @param hub hub representation
630 * @param port port number, starting from 1
631 */
632static void usb_hub_process_interrupt(usb_hub_info_t * hub,
633 uint16_t port) {
634 usb_log_debug("interrupt at port %d\n", port);
635 //determine type of change
636 usb_pipe_t *pipe = hub->control_pipe;
637
638 int opResult;
639
640 usb_port_status_t status;
641 size_t rcvd_size;
642 usb_device_request_setup_packet_t request;
643 //int opResult;
644 usb_hub_set_port_status_request(&request, port);
645 //endpoint 0
646
647 opResult = usb_pipe_control_read(
648 pipe,
649 &request, sizeof(usb_device_request_setup_packet_t),
650 &status, 4, &rcvd_size
651 );
652 if (opResult != EOK) {
653 usb_log_error("could not get port status\n");
654 return;
655 }
656 if (rcvd_size != sizeof (usb_port_status_t)) {
657 usb_log_error("received status has incorrect size\n");
658 return;
659 }
660 //something connected/disconnected
661 if (usb_port_connect_change(&status)) {
662 usb_log_debug("connection change on port\n");
663 if (usb_port_dev_connected(&status)) {
664 usb_log_debug("some connection changed\n");
665 usb_hub_init_add_device(hub, port, usb_port_speed(&status));
666 } else {
667 usb_hub_removed_device(hub, port);
668 }
669 }
670 //over current
671 if (usb_port_overcurrent_change(&status)) {
672 //check if it was not auto-resolved
673 usb_log_debug("overcurrent change on port\n");
674 if(usb_port_over_current(&status)){
675 usb_hub_over_current(hub,port);
676 }else{
677 usb_log_debug("over current condition was auto-resolved on port %d\n",
678 port);
679 }
680 }
681 //port reset
682 if (usb_port_reset_completed(&status)) {
683 usb_log_debug("port reset complete\n");
684 if (usb_port_enabled(&status)) {
685 usb_hub_finalize_add_device(hub, port, usb_port_speed(&status));
686 } else {
687 usb_log_warning("port reset, but port still not enabled\n");
688 }
689 }
690 usb_log_debug("status %x\n ",status);
691
692 usb_port_set_connect_change(&status, false);
693 usb_port_set_reset(&status, false);
694 usb_port_set_reset_completed(&status, false);
695 usb_port_set_dev_connected(&status, false);
696 if (status>>16) {
697 usb_log_info("there was some unsupported change on port %d: %X\n",
698 port,status);
699
700 }
701}
702
703/**
704 * check changes on hub
705 *
706 * Handles changes on each port with a status change.
707 * @param hub_info hub representation
708 * @return error code
709 */
710int usb_hub_check_hub_changes(usb_hub_info_t * hub_info){
711 int opResult;
712 opResult = usb_pipe_start_session(
713 hub_info->status_change_pipe);
714 if(opResult != EOK){
715 usb_log_error("could not initialize communication for hub; %d\n",
716 opResult);
717 return opResult;
718 }
719
720 size_t port_count = hub_info->port_count;
721
722 /// FIXME: count properly
723 size_t byte_length = ((port_count+1) / 8) + 1;
724 void *change_bitmap = malloc(byte_length);
725 size_t actual_size;
726
727 /*
728 * Send the request.
729 */
730 opResult = usb_pipe_read(
731 hub_info->status_change_pipe,
732 change_bitmap, byte_length, &actual_size
733 );
734
735 if (opResult != EOK) {
736 free(change_bitmap);
737 usb_log_warning("something went wrong while getting status of hub\n");
738 usb_pipe_end_session(hub_info->status_change_pipe);
739 return opResult;
740 }
741 unsigned int port;
742 opResult = usb_pipe_start_session(hub_info->control_pipe);
743 if(opResult!=EOK){
744 usb_log_error("could not start control pipe session %d\n", opResult);
745 usb_pipe_end_session(hub_info->status_change_pipe);
746 return opResult;
747 }
748 opResult = usb_hc_connection_open(&hub_info->connection);
749 if(opResult!=EOK){
750 usb_log_error("could not start host controller session %d\n",
751 opResult);
752 usb_pipe_end_session(hub_info->control_pipe);
753 usb_pipe_end_session(hub_info->status_change_pipe);
754 return opResult;
755 }
756
757 ///todo, opresult check, pre obe konekce
758 for (port = 1; port < port_count+1; ++port) {
759 bool interrupt =
760 (((uint8_t*) change_bitmap)[port / 8] >> (port % 8)) % 2;
761 if (interrupt) {
762 usb_hub_process_interrupt(
763 hub_info, port);
764 }
765 }
766 usb_hc_connection_close(&hub_info->connection);
767 usb_pipe_end_session(hub_info->control_pipe);
768 usb_pipe_end_session(hub_info->status_change_pipe);
769 free(change_bitmap);
770 return EOK;
771}
772#endif
773
774
775/**
776 * @}
777 */
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