1/* $FreeBSD: stable/9/sys/dev/usb/controller/usb_controller.c 242775 2012-11-08 16:13:51Z hselasky $ */
|
| 1/* $FreeBSD: stable/9/sys/dev/usb/controller/usb_controller.c 247090 2013-02-21 07:48:07Z hselasky $ */ |
2/*-
3 * Copyright (c) 2008 Hans Petter Selasky. 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 * 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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include "opt_ddb.h"
28
29#include <sys/stdint.h>
30#include <sys/stddef.h>
31#include <sys/param.h>
32#include <sys/queue.h>
33#include <sys/types.h>
34#include <sys/systm.h>
35#include <sys/kernel.h>
36#include <sys/bus.h>
37#include <sys/module.h>
38#include <sys/lock.h>
39#include <sys/mutex.h>
40#include <sys/condvar.h>
41#include <sys/sysctl.h>
42#include <sys/sx.h>
43#include <sys/unistd.h>
44#include <sys/callout.h>
45#include <sys/malloc.h>
46#include <sys/priv.h>
47
48#include <dev/usb/usb.h>
49#include <dev/usb/usbdi.h>
50
51#define USB_DEBUG_VAR usb_ctrl_debug
52
53#include <dev/usb/usb_core.h>
54#include <dev/usb/usb_debug.h>
55#include <dev/usb/usb_process.h>
56#include <dev/usb/usb_busdma.h>
57#include <dev/usb/usb_dynamic.h>
58#include <dev/usb/usb_device.h>
59#include <dev/usb/usb_hub.h>
60
61#include <dev/usb/usb_controller.h>
62#include <dev/usb/usb_bus.h>
63#include <dev/usb/usb_pf.h>
64#include "usb_if.h"
65
66/* function prototypes */
67
68static device_probe_t usb_probe;
69static device_attach_t usb_attach;
70static device_detach_t usb_detach;
71static device_suspend_t usb_suspend;
72static device_resume_t usb_resume;
73static device_shutdown_t usb_shutdown;
74
75static void usb_attach_sub(device_t, struct usb_bus *);
76
77/* static variables */
78
79#ifdef USB_DEBUG
80static int usb_ctrl_debug = 0;
81
82SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW, 0, "USB controller");
83SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RW, &usb_ctrl_debug, 0,
84 "Debug level");
85#endif
86
87static int usb_no_boot_wait = 0;
88TUNABLE_INT("hw.usb.no_boot_wait", &usb_no_boot_wait);
89SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RD|CTLFLAG_TUN, &usb_no_boot_wait, 0,
90 "No USB device enumerate waiting at boot.");
91
92static int usb_no_suspend_wait = 0;
93TUNABLE_INT("hw.usb.no_suspend_wait", &usb_no_suspend_wait);
94SYSCTL_INT(_hw_usb, OID_AUTO, no_suspend_wait, CTLFLAG_RW|CTLFLAG_TUN,
95 &usb_no_suspend_wait, 0, "No USB device waiting at system suspend.");
96
97static int usb_no_shutdown_wait = 0;
98TUNABLE_INT("hw.usb.no_shutdown_wait", &usb_no_shutdown_wait);
99SYSCTL_INT(_hw_usb, OID_AUTO, no_shutdown_wait, CTLFLAG_RW|CTLFLAG_TUN,
100 &usb_no_shutdown_wait, 0, "No USB device waiting at system shutdown.");
101
102static devclass_t usb_devclass;
103
104static device_method_t usb_methods[] = {
105 DEVMETHOD(device_probe, usb_probe),
106 DEVMETHOD(device_attach, usb_attach),
107 DEVMETHOD(device_detach, usb_detach),
108 DEVMETHOD(device_suspend, usb_suspend),
109 DEVMETHOD(device_resume, usb_resume),
110 DEVMETHOD(device_shutdown, usb_shutdown),
111 {0, 0}
112};
113
114static driver_t usb_driver = {
115 .name = "usbus",
116 .methods = usb_methods,
117 .size = 0,
118};
119
120/* Host Only Drivers */
121DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, 0, 0);
122DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, 0, 0);
123DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, 0, 0);
124DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, 0, 0);
125
126/* Device Only Drivers */
127DRIVER_MODULE(usbus, at91_udp, usb_driver, usb_devclass, 0, 0);
128DRIVER_MODULE(usbus, musbotg, usb_driver, usb_devclass, 0, 0);
129DRIVER_MODULE(usbus, uss820, usb_driver, usb_devclass, 0, 0);
130
131/*------------------------------------------------------------------------*
132 * usb_probe
133 *
134 * This function is called from "{ehci,ohci,uhci}_pci_attach()".
135 *------------------------------------------------------------------------*/
136static int
137usb_probe(device_t dev)
138{
139 DPRINTF("\n");
140 return (0);
141}
142
143static void
144usb_root_mount_rel(struct usb_bus *bus)
145{
146 if (bus->bus_roothold != NULL) {
147 DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold);
148 root_mount_rel(bus->bus_roothold);
149 bus->bus_roothold = NULL;
150 }
151}
152
153/*------------------------------------------------------------------------*
154 * usb_attach
155 *------------------------------------------------------------------------*/
156static int
157usb_attach(device_t dev)
158{
159 struct usb_bus *bus = device_get_ivars(dev);
160
161 DPRINTF("\n");
162
163 if (bus == NULL) {
164 device_printf(dev, "USB device has no ivars\n");
165 return (ENXIO);
166 }
167
168 if (usb_no_boot_wait == 0) {
169 /* delay vfs_mountroot until the bus is explored */
170 bus->bus_roothold = root_mount_hold(device_get_nameunit(dev));
171 }
172
173 usb_attach_sub(dev, bus);
174
175 return (0); /* return success */
176}
177
178/*------------------------------------------------------------------------*
179 * usb_detach
180 *------------------------------------------------------------------------*/
181static int
182usb_detach(device_t dev)
183{
184 struct usb_bus *bus = device_get_softc(dev);
185
186 DPRINTF("\n");
187
188 if (bus == NULL) {
189 /* was never setup properly */
190 return (0);
191 }
192 /* Stop power watchdog */
193 usb_callout_drain(&bus->power_wdog);
194
195 /* Let the USB explore process detach all devices. */
196 usb_root_mount_rel(bus);
197
198 USB_BUS_LOCK(bus);
199
200 /* Queue detach job */
201 usb_proc_msignal(&bus->explore_proc,
202 &bus->detach_msg[0], &bus->detach_msg[1]);
203
204 /* Wait for detach to complete */
205 usb_proc_mwait(&bus->explore_proc,
206 &bus->detach_msg[0], &bus->detach_msg[1]);
207
208 USB_BUS_UNLOCK(bus);
209
210 /* Get rid of USB callback processes */
211
212 usb_proc_free(&bus->giant_callback_proc);
213 usb_proc_free(&bus->non_giant_callback_proc);
214
215 /* Get rid of USB explore process */
216
217 usb_proc_free(&bus->explore_proc);
218
219 /* Get rid of control transfer process */
220
221 usb_proc_free(&bus->control_xfer_proc);
222
223#if USB_HAVE_PF
224 usbpf_detach(bus);
225#endif
226 return (0);
227}
228
229/*------------------------------------------------------------------------*
230 * usb_suspend
231 *------------------------------------------------------------------------*/
232static int
233usb_suspend(device_t dev)
234{
235 struct usb_bus *bus = device_get_softc(dev);
236
237 DPRINTF("\n");
238
239 if (bus == NULL) {
240 /* was never setup properly */
241 return (0);
242 }
243
244 USB_BUS_LOCK(bus);
245 usb_proc_msignal(&bus->explore_proc,
246 &bus->suspend_msg[0], &bus->suspend_msg[1]);
247 if (usb_no_suspend_wait == 0) {
248 /* wait for suspend callback to be executed */
249 usb_proc_mwait(&bus->explore_proc,
250 &bus->suspend_msg[0], &bus->suspend_msg[1]);
251 }
252 USB_BUS_UNLOCK(bus);
253
254 return (0);
255}
256
257/*------------------------------------------------------------------------*
258 * usb_resume
259 *------------------------------------------------------------------------*/
260static int
261usb_resume(device_t dev)
262{
263 struct usb_bus *bus = device_get_softc(dev);
264
265 DPRINTF("\n");
266
267 if (bus == NULL) {
268 /* was never setup properly */
269 return (0);
270 }
271
272 USB_BUS_LOCK(bus);
273 usb_proc_msignal(&bus->explore_proc,
274 &bus->resume_msg[0], &bus->resume_msg[1]);
275 USB_BUS_UNLOCK(bus);
276
277 return (0);
278}
279
280/*------------------------------------------------------------------------*
281 * usb_shutdown
282 *------------------------------------------------------------------------*/
283static int
284usb_shutdown(device_t dev)
285{
286 struct usb_bus *bus = device_get_softc(dev);
287
288 DPRINTF("\n");
289
290 if (bus == NULL) {
291 /* was never setup properly */
292 return (0);
293 }
294
295 device_printf(bus->bdev, "Controller shutdown\n");
296
297 USB_BUS_LOCK(bus);
298 usb_proc_msignal(&bus->explore_proc,
299 &bus->shutdown_msg[0], &bus->shutdown_msg[1]);
300 if (usb_no_shutdown_wait == 0) {
301 /* wait for shutdown callback to be executed */
302 usb_proc_mwait(&bus->explore_proc,
303 &bus->shutdown_msg[0], &bus->shutdown_msg[1]);
304 }
305 USB_BUS_UNLOCK(bus);
306
307 device_printf(bus->bdev, "Controller shutdown complete\n");
308
309 return (0);
310}
311
312/*------------------------------------------------------------------------*
313 * usb_bus_explore
314 *
315 * This function is used to explore the device tree from the root.
316 *------------------------------------------------------------------------*/
317static void
318usb_bus_explore(struct usb_proc_msg *pm)
319{
320 struct usb_bus *bus;
321 struct usb_device *udev;
322
323 bus = ((struct usb_bus_msg *)pm)->bus;
324 udev = bus->devices[USB_ROOT_HUB_ADDR];
325
326 if (bus->no_explore != 0)
327 return;
328
329 if (udev && udev->hub) {
330
331 if (bus->do_probe) {
332 bus->do_probe = 0;
333 bus->driver_added_refcount++;
334 }
335 if (bus->driver_added_refcount == 0) {
336 /* avoid zero, hence that is memory default */
337 bus->driver_added_refcount = 1;
338 }
339
340#ifdef DDB
341 /*
342 * The following three lines of code are only here to
343 * recover from DDB:
344 */
345 usb_proc_rewakeup(&bus->control_xfer_proc);
346 usb_proc_rewakeup(&bus->giant_callback_proc);
347 usb_proc_rewakeup(&bus->non_giant_callback_proc);
348#endif
349
350 USB_BUS_UNLOCK(bus);
351
352#if USB_HAVE_POWERD
353 /*
354 * First update the USB power state!
355 */
356 usb_bus_powerd(bus);
357#endif
358 /* Explore the Root USB HUB. */
359 (udev->hub->explore) (udev);
360 USB_BUS_LOCK(bus);
361 }
362 usb_root_mount_rel(bus);
363}
364
365/*------------------------------------------------------------------------*
366 * usb_bus_detach
367 *
368 * This function is used to detach the device tree from the root.
369 *------------------------------------------------------------------------*/
370static void
371usb_bus_detach(struct usb_proc_msg *pm)
372{
373 struct usb_bus *bus;
374 struct usb_device *udev;
375 device_t dev;
376
377 bus = ((struct usb_bus_msg *)pm)->bus;
378 udev = bus->devices[USB_ROOT_HUB_ADDR];
379 dev = bus->bdev;
380 /* clear the softc */
381 device_set_softc(dev, NULL);
382 USB_BUS_UNLOCK(bus);
383
384 /* detach children first */
385 mtx_lock(&Giant);
386 bus_generic_detach(dev);
387 mtx_unlock(&Giant);
388
389 /*
390 * Free USB device and all subdevices, if any.
391 */
392 usb_free_device(udev, 0);
393
394 USB_BUS_LOCK(bus);
395 /* clear bdev variable last */
396 bus->bdev = NULL;
397}
398
399/*------------------------------------------------------------------------*
400 * usb_bus_suspend
401 *
402 * This function is used to suspend the USB contoller.
403 *------------------------------------------------------------------------*/
404static void
405usb_bus_suspend(struct usb_proc_msg *pm)
406{
407 struct usb_bus *bus;
408 struct usb_device *udev;
409 usb_error_t err;
|
| 410 uint8_t do_unlock; |
411
412 bus = ((struct usb_bus_msg *)pm)->bus;
413 udev = bus->devices[USB_ROOT_HUB_ADDR];
414
415 if (udev == NULL || bus->bdev == NULL)
416 return;
417
418 USB_BUS_UNLOCK(bus);
419
420 /*
421 * We use the shutdown event here because the suspend and
422 * resume events are reserved for the USB port suspend and
423 * resume. The USB system suspend is implemented like full
424 * shutdown and all connected USB devices will be disconnected
425 * subsequently. At resume all USB devices will be
426 * re-connected again.
427 */
428
429 bus_generic_shutdown(bus->bdev);
430
|
430 usbd_enum_lock(udev);
|
| 431 do_unlock = usbd_enum_lock(udev); |
432
433 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX);
434 if (err)
435 device_printf(bus->bdev, "Could not unconfigure root HUB\n");
436
437 USB_BUS_LOCK(bus);
438 bus->hw_power_state = 0;
439 bus->no_explore = 1;
440 USB_BUS_UNLOCK(bus);
441
442 if (bus->methods->set_hw_power != NULL)
443 (bus->methods->set_hw_power) (bus);
444
445 if (bus->methods->set_hw_power_sleep != NULL)
446 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SUSPEND);
447
|
447 usbd_enum_unlock(udev);
|
448 if (do_unlock)
449 usbd_enum_unlock(udev); |
450
451 USB_BUS_LOCK(bus);
452}
453
454/*------------------------------------------------------------------------*
455 * usb_bus_resume
456 *
457 * This function is used to resume the USB contoller.
458 *------------------------------------------------------------------------*/
459static void
460usb_bus_resume(struct usb_proc_msg *pm)
461{
462 struct usb_bus *bus;
463 struct usb_device *udev;
464 usb_error_t err;
|
| 465 uint8_t do_unlock; |
466
467 bus = ((struct usb_bus_msg *)pm)->bus;
468 udev = bus->devices[USB_ROOT_HUB_ADDR];
469
470 if (udev == NULL || bus->bdev == NULL)
471 return;
472
473 USB_BUS_UNLOCK(bus);
474
|
472 usbd_enum_lock(udev);
|
| 475 do_unlock = usbd_enum_lock(udev); |
476#if 0
477 DEVMETHOD(usb_take_controller, NULL); /* dummy */
478#endif
479 USB_TAKE_CONTROLLER(device_get_parent(bus->bdev));
480
481 USB_BUS_LOCK(bus);
482 bus->hw_power_state =
483 USB_HW_POWER_CONTROL |
484 USB_HW_POWER_BULK |
485 USB_HW_POWER_INTERRUPT |
486 USB_HW_POWER_ISOC |
487 USB_HW_POWER_NON_ROOT_HUB;
488 bus->no_explore = 0;
489 USB_BUS_UNLOCK(bus);
490
491 if (bus->methods->set_hw_power_sleep != NULL)
492 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_RESUME);
493
494 if (bus->methods->set_hw_power != NULL)
495 (bus->methods->set_hw_power) (bus);
496
497 /* restore USB configuration to index 0 */
498 err = usbd_set_config_index(udev, 0);
499 if (err)
500 device_printf(bus->bdev, "Could not configure root HUB\n");
501
502 /* probe and attach */
503 err = usb_probe_and_attach(udev, USB_IFACE_INDEX_ANY);
504 if (err) {
505 device_printf(bus->bdev, "Could not probe and "
506 "attach root HUB\n");
507 }
508
|
506 usbd_enum_unlock(udev);
|
509 if (do_unlock)
510 usbd_enum_unlock(udev); |
511
512 USB_BUS_LOCK(bus);
513}
514
515/*------------------------------------------------------------------------*
516 * usb_bus_shutdown
517 *
518 * This function is used to shutdown the USB contoller.
519 *------------------------------------------------------------------------*/
520static void
521usb_bus_shutdown(struct usb_proc_msg *pm)
522{
523 struct usb_bus *bus;
524 struct usb_device *udev;
525 usb_error_t err;
|
| 526 uint8_t do_unlock; |
527
528 bus = ((struct usb_bus_msg *)pm)->bus;
529 udev = bus->devices[USB_ROOT_HUB_ADDR];
530
531 if (udev == NULL || bus->bdev == NULL)
532 return;
533
534 USB_BUS_UNLOCK(bus);
535
536 bus_generic_shutdown(bus->bdev);
537
|
533 usbd_enum_lock(udev);
|
| 538 do_unlock = usbd_enum_lock(udev); |
539
540 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX);
541 if (err)
542 device_printf(bus->bdev, "Could not unconfigure root HUB\n");
543
544 USB_BUS_LOCK(bus);
545 bus->hw_power_state = 0;
546 bus->no_explore = 1;
547 USB_BUS_UNLOCK(bus);
548
549 if (bus->methods->set_hw_power != NULL)
550 (bus->methods->set_hw_power) (bus);
551
552 if (bus->methods->set_hw_power_sleep != NULL)
553 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SHUTDOWN);
554
|
550 usbd_enum_unlock(udev);
|
555 if (do_unlock)
556 usbd_enum_unlock(udev); |
557
558 USB_BUS_LOCK(bus);
559}
560
561static void
562usb_power_wdog(void *arg)
563{
564 struct usb_bus *bus = arg;
565
566 USB_BUS_LOCK_ASSERT(bus, MA_OWNED);
567
568 usb_callout_reset(&bus->power_wdog,
569 4 * hz, usb_power_wdog, arg);
570
571#ifdef DDB
572 /*
573 * The following line of code is only here to recover from
574 * DDB:
575 */
576 usb_proc_rewakeup(&bus->explore_proc); /* recover from DDB */
577#endif
578
579#if USB_HAVE_POWERD
580 USB_BUS_UNLOCK(bus);
581
582 usb_bus_power_update(bus);
583
584 USB_BUS_LOCK(bus);
585#endif
586}
587
588/*------------------------------------------------------------------------*
589 * usb_bus_attach
590 *
591 * This function attaches USB in context of the explore thread.
592 *------------------------------------------------------------------------*/
593static void
594usb_bus_attach(struct usb_proc_msg *pm)
595{
596 struct usb_bus *bus;
597 struct usb_device *child;
598 device_t dev;
599 usb_error_t err;
600 enum usb_dev_speed speed;
601
602 bus = ((struct usb_bus_msg *)pm)->bus;
603 dev = bus->bdev;
604
605 DPRINTF("\n");
606
607 switch (bus->usbrev) {
608 case USB_REV_1_0:
609 speed = USB_SPEED_FULL;
610 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n");
611 break;
612
613 case USB_REV_1_1:
614 speed = USB_SPEED_FULL;
615 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n");
616 break;
617
618 case USB_REV_2_0:
619 speed = USB_SPEED_HIGH;
620 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n");
621 break;
622
623 case USB_REV_2_5:
624 speed = USB_SPEED_VARIABLE;
625 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n");
626 break;
627
628 case USB_REV_3_0:
629 speed = USB_SPEED_SUPER;
630 device_printf(bus->bdev, "5.0Gbps Super Speed USB v3.0\n");
631 break;
632
633 default:
634 device_printf(bus->bdev, "Unsupported USB revision\n");
635 usb_root_mount_rel(bus);
636 return;
637 }
638
639 /* default power_mask value */
640 bus->hw_power_state =
641 USB_HW_POWER_CONTROL |
642 USB_HW_POWER_BULK |
643 USB_HW_POWER_INTERRUPT |
644 USB_HW_POWER_ISOC |
645 USB_HW_POWER_NON_ROOT_HUB;
646
647 USB_BUS_UNLOCK(bus);
648
649 /* make sure power is set at least once */
650
651 if (bus->methods->set_hw_power != NULL) {
652 (bus->methods->set_hw_power) (bus);
653 }
654
655 /* allocate the Root USB device */
656
657 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1,
658 speed, USB_MODE_HOST);
659 if (child) {
660 err = usb_probe_and_attach(child,
661 USB_IFACE_INDEX_ANY);
662 if (!err) {
663 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) ||
664 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) {
665 err = USB_ERR_NO_ROOT_HUB;
666 }
667 }
668 } else {
669 err = USB_ERR_NOMEM;
670 }
671
672 USB_BUS_LOCK(bus);
673
674 if (err) {
675 device_printf(bus->bdev, "Root HUB problem, error=%s\n",
676 usbd_errstr(err));
677 usb_root_mount_rel(bus);
678 }
679
680 /* set softc - we are ready */
681 device_set_softc(dev, bus);
682
683 /* start watchdog */
684 usb_power_wdog(bus);
685}
686
687/*------------------------------------------------------------------------*
688 * usb_attach_sub
689 *
690 * This function creates a thread which runs the USB attach code.
691 *------------------------------------------------------------------------*/
692static void
693usb_attach_sub(device_t dev, struct usb_bus *bus)
694{
695 const char *pname = device_get_nameunit(dev);
696
697 mtx_lock(&Giant);
698 if (usb_devclass_ptr == NULL)
699 usb_devclass_ptr = devclass_find("usbus");
700 mtx_unlock(&Giant);
701
702#if USB_HAVE_PF
703 usbpf_attach(bus);
704#endif
705 /* Initialise USB process messages */
706 bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore;
707 bus->explore_msg[0].bus = bus;
708 bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore;
709 bus->explore_msg[1].bus = bus;
710
711 bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach;
712 bus->detach_msg[0].bus = bus;
713 bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach;
714 bus->detach_msg[1].bus = bus;
715
716 bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach;
717 bus->attach_msg[0].bus = bus;
718 bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach;
719 bus->attach_msg[1].bus = bus;
720
721 bus->suspend_msg[0].hdr.pm_callback = &usb_bus_suspend;
722 bus->suspend_msg[0].bus = bus;
723 bus->suspend_msg[1].hdr.pm_callback = &usb_bus_suspend;
724 bus->suspend_msg[1].bus = bus;
725
726 bus->resume_msg[0].hdr.pm_callback = &usb_bus_resume;
727 bus->resume_msg[0].bus = bus;
728 bus->resume_msg[1].hdr.pm_callback = &usb_bus_resume;
729 bus->resume_msg[1].bus = bus;
730
731 bus->shutdown_msg[0].hdr.pm_callback = &usb_bus_shutdown;
732 bus->shutdown_msg[0].bus = bus;
733 bus->shutdown_msg[1].hdr.pm_callback = &usb_bus_shutdown;
734 bus->shutdown_msg[1].bus = bus;
735
736 /* Create USB explore and callback processes */
737
738 if (usb_proc_create(&bus->giant_callback_proc,
739 &bus->bus_mtx, pname, USB_PRI_MED)) {
740 device_printf(dev, "WARNING: Creation of USB Giant "
741 "callback process failed.\n");
742 } else if (usb_proc_create(&bus->non_giant_callback_proc,
743 &bus->bus_mtx, pname, USB_PRI_HIGH)) {
744 device_printf(dev, "WARNING: Creation of USB non-Giant "
745 "callback process failed.\n");
746 } else if (usb_proc_create(&bus->explore_proc,
747 &bus->bus_mtx, pname, USB_PRI_MED)) {
748 device_printf(dev, "WARNING: Creation of USB explore "
749 "process failed.\n");
750 } else if (usb_proc_create(&bus->control_xfer_proc,
751 &bus->bus_mtx, pname, USB_PRI_MED)) {
752 device_printf(dev, "WARNING: Creation of USB control transfer "
753 "process failed.\n");
754 } else {
755 /* Get final attach going */
756 USB_BUS_LOCK(bus);
757 usb_proc_msignal(&bus->explore_proc,
758 &bus->attach_msg[0], &bus->attach_msg[1]);
759 USB_BUS_UNLOCK(bus);
760
761 /* Do initial explore */
762 usb_needs_explore(bus, 1);
763 }
764}
765
766SYSUNINIT(usb_bus_unload, SI_SUB_KLD, SI_ORDER_ANY, usb_bus_unload, NULL);
767
768/*------------------------------------------------------------------------*
769 * usb_bus_mem_flush_all_cb
770 *------------------------------------------------------------------------*/
771#if USB_HAVE_BUSDMA
772static void
773usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
774 struct usb_page *pg, usb_size_t size, usb_size_t align)
775{
776 usb_pc_cpu_flush(pc);
777}
778#endif
779
780/*------------------------------------------------------------------------*
781 * usb_bus_mem_flush_all - factored out code
782 *------------------------------------------------------------------------*/
783#if USB_HAVE_BUSDMA
784void
785usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb)
786{
787 if (cb) {
788 cb(bus, &usb_bus_mem_flush_all_cb);
789 }
790}
791#endif
792
793/*------------------------------------------------------------------------*
794 * usb_bus_mem_alloc_all_cb
795 *------------------------------------------------------------------------*/
796#if USB_HAVE_BUSDMA
797static void
798usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
799 struct usb_page *pg, usb_size_t size, usb_size_t align)
800{
801 /* need to initialize the page cache */
802 pc->tag_parent = bus->dma_parent_tag;
803
804 if (usb_pc_alloc_mem(pc, pg, size, align)) {
805 bus->alloc_failed = 1;
806 }
807}
808#endif
809
810/*------------------------------------------------------------------------*
811 * usb_bus_mem_alloc_all - factored out code
812 *
813 * Returns:
814 * 0: Success
815 * Else: Failure
816 *------------------------------------------------------------------------*/
817uint8_t
818usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat,
819 usb_bus_mem_cb_t *cb)
820{
821 bus->alloc_failed = 0;
822
823 mtx_init(&bus->bus_mtx, device_get_nameunit(bus->parent),
824 NULL, MTX_DEF | MTX_RECURSE);
825
826 usb_callout_init_mtx(&bus->power_wdog,
827 &bus->bus_mtx, 0);
828
829 TAILQ_INIT(&bus->intr_q.head);
830
831#if USB_HAVE_BUSDMA
832 usb_dma_tag_setup(bus->dma_parent_tag, bus->dma_tags,
833 dmat, &bus->bus_mtx, NULL, 32, USB_BUS_DMA_TAG_MAX);
834#endif
835 if ((bus->devices_max > USB_MAX_DEVICES) ||
836 (bus->devices_max < USB_MIN_DEVICES) ||
837 (bus->devices == NULL)) {
838 DPRINTFN(0, "Devices field has not been "
839 "initialised properly\n");
840 bus->alloc_failed = 1; /* failure */
841 }
842#if USB_HAVE_BUSDMA
843 if (cb) {
844 cb(bus, &usb_bus_mem_alloc_all_cb);
845 }
846#endif
847 if (bus->alloc_failed) {
848 usb_bus_mem_free_all(bus, cb);
849 }
850 return (bus->alloc_failed);
851}
852
853/*------------------------------------------------------------------------*
854 * usb_bus_mem_free_all_cb
855 *------------------------------------------------------------------------*/
856#if USB_HAVE_BUSDMA
857static void
858usb_bus_mem_free_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
859 struct usb_page *pg, usb_size_t size, usb_size_t align)
860{
861 usb_pc_free_mem(pc);
862}
863#endif
864
865/*------------------------------------------------------------------------*
866 * usb_bus_mem_free_all - factored out code
867 *------------------------------------------------------------------------*/
868void
869usb_bus_mem_free_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb)
870{
871#if USB_HAVE_BUSDMA
872 if (cb) {
873 cb(bus, &usb_bus_mem_free_all_cb);
874 }
875 usb_dma_tag_unsetup(bus->dma_parent_tag);
876#endif
877
878 mtx_destroy(&bus->bus_mtx);
879}
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