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usb4bsd: Use NULL for pointers.
[dragonfly.git] / sys / bus / u4b / controller / usb_controller.c
CommitLineData
12bd3c8b
SW		 1/* $FreeBSD$ */
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>
12bd3c8b
SW		 30#include <sys/param.h>
31#include <sys/queue.h>
32#include <sys/types.h>
33#include <sys/systm.h>
34#include <sys/kernel.h>
35#include <sys/bus.h>
36#include <sys/module.h>
37#include <sys/lock.h>
12bd3c8b
SW		 38#include <sys/condvar.h>
39#include <sys/sysctl.h>
12bd3c8b
SW		 40#include <sys/unistd.h>
41#include <sys/callout.h>
42#include <sys/malloc.h>
43#include <sys/priv.h>
44
722d05c3
SW		 45#include <bus/u4b/usb.h>
46#include <bus/u4b/usbdi.h>
12bd3c8b
SW		 47
48#define USB_DEBUG_VAR usb_ctrl_debug
49
722d05c3
SW		 50#include <bus/u4b/usb_core.h>
51#include <bus/u4b/usb_debug.h>
52#include <bus/u4b/usb_process.h>
53#include <bus/u4b/usb_busdma.h>
54#include <bus/u4b/usb_dynamic.h>
55#include <bus/u4b/usb_device.h>
56#include <bus/u4b/usb_hub.h>
57
58#include <bus/u4b/usb_controller.h>
59#include <bus/u4b/usb_bus.h>
60#include <bus/u4b/usb_pf.h>
12bd3c8b
SW		 61#include "usb_if.h"
62
63/* function prototypes */
64
65static device_probe_t usb_probe;
66static device_attach_t usb_attach;
67static device_detach_t usb_detach;
68static device_suspend_t usb_suspend;
69static device_resume_t usb_resume;
70static device_shutdown_t usb_shutdown;
71
72static void usb_attach_sub(device_t, struct usb_bus *);
73
74/* static variables */
75
76#ifdef USB_DEBUG
77static int usb_ctrl_debug = 0;
78
79static SYSCTL_NODE(_hw_usb, OID_AUTO, ctrl, CTLFLAG_RW, 0, "USB controller");
80SYSCTL_INT(_hw_usb_ctrl, OID_AUTO, debug, CTLFLAG_RW, &usb_ctrl_debug, 0,
81 "Debug level");
82#endif
83
84static int usb_no_boot_wait = 0;
85TUNABLE_INT("hw.usb.no_boot_wait", &usb_no_boot_wait);
722d05c3
SW		 86/* XXX freebsd uses CTLFLAG_RDTUN here */
87SYSCTL_INT(_hw_usb, OID_AUTO, no_boot_wait, CTLFLAG_RW, &usb_no_boot_wait, 0,
12bd3c8b
SW		 88 "No USB device enumerate waiting at boot.");
89
90static int usb_no_shutdown_wait = 0;
91TUNABLE_INT("hw.usb.no_shutdown_wait", &usb_no_shutdown_wait);
722d05c3 92SYSCTL_INT(_hw_usb, OID_AUTO, no_shutdown_wait, CTLFLAG_RW, &usb_no_shutdown_wait, 0,
12bd3c8b
SW		 93 "No USB device waiting at system shutdown.");
94
95static devclass_t usb_devclass;
96
97static device_method_t usb_methods[] = {
98 DEVMETHOD(device_probe, usb_probe),
99 DEVMETHOD(device_attach, usb_attach),
100 DEVMETHOD(device_detach, usb_detach),
101 DEVMETHOD(device_suspend, usb_suspend),
102 DEVMETHOD(device_resume, usb_resume),
103 DEVMETHOD(device_shutdown, usb_shutdown),
104 {0, 0}
105};
106
107static driver_t usb_driver = {
108 .name = "usbus",
109 .methods = usb_methods,
110 .size = 0,
111};
112
113/* Host Only Drivers */
15f415f6
SW		 114DRIVER_MODULE(usbus, ohci, usb_driver, usb_devclass, NULL, NULL);
115DRIVER_MODULE(usbus, uhci, usb_driver, usb_devclass, NULL, NULL);
116DRIVER_MODULE(usbus, ehci, usb_driver, usb_devclass, NULL, NULL);
117DRIVER_MODULE(usbus, xhci, usb_driver, usb_devclass, NULL, NULL);
12bd3c8b 118
12bd3c8b
SW		 119/*------------------------------------------------------------------------*
120 * usb_probe
121 *
122 * This function is called from "{ehci,ohci,uhci}_pci_attach()".
123 *------------------------------------------------------------------------*/
124static int
125usb_probe(device_t dev)
126{
127 DPRINTF("\n");
128 return (0);
129}
130
131static void
132usb_root_mount_rel(struct usb_bus *bus)
133{
134 if (bus->bus_roothold != NULL) {
135 DPRINTF("Releasing root mount hold %p\n", bus->bus_roothold);
63da4a34
SW		 136#if 0 /* XXX Dragonflybsd seems to not have this? */
137 root_mount_rel(bus->bus_roothold);
138#endif
12bd3c8b
SW		 139 bus->bus_roothold = NULL;
140 }
141}
142
143/*------------------------------------------------------------------------*
144 * usb_attach
145 *------------------------------------------------------------------------*/
146static int
147usb_attach(device_t dev)
148{
149 struct usb_bus *bus = device_get_ivars(dev);
150
151 DPRINTF("\n");
152
153 if (bus == NULL) {
154 device_printf(dev, "USB device has no ivars\n");
155 return (ENXIO);
156 }
157
63da4a34 158#if 0 /* XXX: Dragonfly does not seem to have this mechanism? */
12bd3c8b
SW		 159 if (usb_no_boot_wait == 0) {
160 /* delay vfs_mountroot until the bus is explored */
161 bus->bus_roothold = root_mount_hold(device_get_nameunit(dev));
162 }
63da4a34 163#endif
12bd3c8b
SW		 164
165 usb_attach_sub(dev, bus);
166
167 return (0); /* return success */
168}
169
170/*------------------------------------------------------------------------*
171 * usb_detach
172 *------------------------------------------------------------------------*/
173static int
174usb_detach(device_t dev)
175{
176 struct usb_bus *bus = device_get_softc(dev);
177
178 DPRINTF("\n");
179
180 if (bus == NULL) {
181 /* was never setup properly */
182 return (0);
183 }
184 /* Stop power watchdog */
185 usb_callout_drain(&bus->power_wdog);
186
187 /* Let the USB explore process detach all devices. */
188 usb_root_mount_rel(bus);
63da4a34 189
12bd3c8b
SW		 190 USB_BUS_LOCK(bus);
191
192 /* Queue detach job */
193 usb_proc_msignal(&bus->explore_proc,
194 &bus->detach_msg[0], &bus->detach_msg[1]);
195
196 /* Wait for detach to complete */
197 usb_proc_mwait(&bus->explore_proc,
198 &bus->detach_msg[0], &bus->detach_msg[1]);
199
200 USB_BUS_UNLOCK(bus);
201
202 /* Get rid of USB callback processes */
203
204 usb_proc_free(&bus->giant_callback_proc);
205 usb_proc_free(&bus->non_giant_callback_proc);
206
207 /* Get rid of USB explore process */
208
209 usb_proc_free(&bus->explore_proc);
210
211 /* Get rid of control transfer process */
212
213 usb_proc_free(&bus->control_xfer_proc);
214
215#if USB_HAVE_PF
216 usbpf_detach(bus);
217#endif
218 return (0);
219}
220
221/*------------------------------------------------------------------------*
222 * usb_suspend
223 *------------------------------------------------------------------------*/
224static int
225usb_suspend(device_t dev)
226{
227 struct usb_bus *bus = device_get_softc(dev);
228
229 DPRINTF("\n");
230
231 if (bus == NULL) {
232 /* was never setup properly */
233 return (0);
234 }
235
236 USB_BUS_LOCK(bus);
237 usb_proc_msignal(&bus->explore_proc,
238 &bus->suspend_msg[0], &bus->suspend_msg[1]);
239 USB_BUS_UNLOCK(bus);
240
241 return (0);
242}
243
244/*------------------------------------------------------------------------*
245 * usb_resume
246 *------------------------------------------------------------------------*/
247static int
248usb_resume(device_t dev)
249{
250 struct usb_bus *bus = device_get_softc(dev);
251
252 DPRINTF("\n");
253
254 if (bus == NULL) {
255 /* was never setup properly */
256 return (0);
257 }
258
259 USB_BUS_LOCK(bus);
260 usb_proc_msignal(&bus->explore_proc,
261 &bus->resume_msg[0], &bus->resume_msg[1]);
262 USB_BUS_UNLOCK(bus);
263
264 return (0);
265}
266
267/*------------------------------------------------------------------------*
268 * usb_shutdown
269 *------------------------------------------------------------------------*/
270static int
271usb_shutdown(device_t dev)
272{
273 struct usb_bus *bus = device_get_softc(dev);
274
275 DPRINTF("\n");
276
277 if (bus == NULL) {
278 /* was never setup properly */
279 return (0);
280 }
281
282 device_printf(bus->bdev, "Controller shutdown\n");
283
284 USB_BUS_LOCK(bus);
285 usb_proc_msignal(&bus->explore_proc,
286 &bus->shutdown_msg[0], &bus->shutdown_msg[1]);
287 if (usb_no_shutdown_wait == 0) {
288 /* wait for shutdown callback to be executed */
289 usb_proc_mwait(&bus->explore_proc,
290 &bus->shutdown_msg[0], &bus->shutdown_msg[1]);
291 }
292 USB_BUS_UNLOCK(bus);
293
294 device_printf(bus->bdev, "Controller shutdown complete\n");
295
296 return (0);
297}
298
299/*------------------------------------------------------------------------*
300 * usb_bus_explore
301 *
302 * This function is used to explore the device tree from the root.
303 *------------------------------------------------------------------------*/
304static void
305usb_bus_explore(struct usb_proc_msg *pm)
306{
307 struct usb_bus *bus;
308 struct usb_device *udev;
309
310 bus = ((struct usb_bus_msg *)pm)->bus;
311 udev = bus->devices[USB_ROOT_HUB_ADDR];
312
313 if (bus->no_explore != 0)
314 return;
315
316 if (udev && udev->hub) {
317
318 if (bus->do_probe) {
319 bus->do_probe = 0;
320 bus->driver_added_refcount++;
321 }
322 if (bus->driver_added_refcount == 0) {
323 /* avoid zero, hence that is memory default */
324 bus->driver_added_refcount = 1;
325 }
326
327#ifdef DDB
328 /*
329 * The following three lines of code are only here to
330 * recover from DDB:
331 */
332 usb_proc_rewakeup(&bus->control_xfer_proc);
333 usb_proc_rewakeup(&bus->giant_callback_proc);
334 usb_proc_rewakeup(&bus->non_giant_callback_proc);
335#endif
336
337 USB_BUS_UNLOCK(bus);
338
339#if USB_HAVE_POWERD
340 /*
341 * First update the USB power state!
342 */
343 usb_bus_powerd(bus);
344#endif
345 /* Explore the Root USB HUB. */
346 (udev->hub->explore) (udev);
347 USB_BUS_LOCK(bus);
348 }
349 usb_root_mount_rel(bus);
350}
351
352/*------------------------------------------------------------------------*
353 * usb_bus_detach
354 *
355 * This function is used to detach the device tree from the root.
356 *------------------------------------------------------------------------*/
357static void
358usb_bus_detach(struct usb_proc_msg *pm)
359{
360 struct usb_bus *bus;
361 struct usb_device *udev;
362 device_t dev;
363
364 bus = ((struct usb_bus_msg *)pm)->bus;
365 udev = bus->devices[USB_ROOT_HUB_ADDR];
366 dev = bus->bdev;
367 /* clear the softc */
368 device_set_softc(dev, NULL);
369 USB_BUS_UNLOCK(bus);
370
371 /* detach children first */
12bd3c8b 372 bus_generic_detach(dev);
12bd3c8b
SW		 373
374 /*
375 * Free USB device and all subdevices, if any.
376 */
377 usb_free_device(udev, 0);
378
379 USB_BUS_LOCK(bus);
380 /* clear bdev variable last */
381 bus->bdev = NULL;
382}
383
384/*------------------------------------------------------------------------*
385 * usb_bus_suspend
386 *
387 * This function is used to suspend the USB contoller.
388 *------------------------------------------------------------------------*/
389static void
390usb_bus_suspend(struct usb_proc_msg *pm)
391{
392 struct usb_bus *bus;
393 struct usb_device *udev;
394 usb_error_t err;
395
396 bus = ((struct usb_bus_msg *)pm)->bus;
397 udev = bus->devices[USB_ROOT_HUB_ADDR];
398
399 if (udev == NULL || bus->bdev == NULL)
400 return;
401
402 USB_BUS_UNLOCK(bus);
403
404 bus_generic_shutdown(bus->bdev);
405
406 usbd_enum_lock(udev);
407
408 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX);
409 if (err)
410 device_printf(bus->bdev, "Could not unconfigure root HUB\n");
411
412 USB_BUS_LOCK(bus);
413 bus->hw_power_state = 0;
414 bus->no_explore = 1;
415 USB_BUS_UNLOCK(bus);
416
417 if (bus->methods->set_hw_power != NULL)
418 (bus->methods->set_hw_power) (bus);
419
420 if (bus->methods->set_hw_power_sleep != NULL)
421 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SUSPEND);
422
423 usbd_enum_unlock(udev);
424
425 USB_BUS_LOCK(bus);
426}
427
428/*------------------------------------------------------------------------*
429 * usb_bus_resume
430 *
431 * This function is used to resume the USB contoller.
432 *------------------------------------------------------------------------*/
433static void
434usb_bus_resume(struct usb_proc_msg *pm)
435{
436 struct usb_bus *bus;
437 struct usb_device *udev;
438 usb_error_t err;
439
440 bus = ((struct usb_bus_msg *)pm)->bus;
441 udev = bus->devices[USB_ROOT_HUB_ADDR];
442
443 if (udev == NULL || bus->bdev == NULL)
444 return;
445
446 USB_BUS_UNLOCK(bus);
447
448 usbd_enum_lock(udev);
449#if 0
450 DEVMETHOD(usb_take_controller, NULL); /* dummy */
451#endif
452 USB_TAKE_CONTROLLER(device_get_parent(bus->bdev));
453
454 USB_BUS_LOCK(bus);
455 bus->hw_power_state =
456 USB_HW_POWER_CONTROL |
457 USB_HW_POWER_BULK |
458 USB_HW_POWER_INTERRUPT |
459 USB_HW_POWER_ISOC |
460 USB_HW_POWER_NON_ROOT_HUB;
461 bus->no_explore = 0;
462 USB_BUS_UNLOCK(bus);
463
464 if (bus->methods->set_hw_power_sleep != NULL)
465 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_RESUME);
466
467 if (bus->methods->set_hw_power != NULL)
468 (bus->methods->set_hw_power) (bus);
469
470 /* restore USB configuration to index 0 */
471 err = usbd_set_config_index(udev, 0);
472 if (err)
473 device_printf(bus->bdev, "Could not configure root HUB\n");
474
475 /* probe and attach */
476 err = usb_probe_and_attach(udev, USB_IFACE_INDEX_ANY);
477 if (err) {
478 device_printf(bus->bdev, "Could not probe and "
479 "attach root HUB\n");
480 }
481
482 usbd_enum_unlock(udev);
483
484 USB_BUS_LOCK(bus);
485}
486
487/*------------------------------------------------------------------------*
488 * usb_bus_shutdown
489 *
490 * This function is used to shutdown the USB contoller.
491 *------------------------------------------------------------------------*/
492static void
493usb_bus_shutdown(struct usb_proc_msg *pm)
494{
495 struct usb_bus *bus;
496 struct usb_device *udev;
497 usb_error_t err;
498
499 bus = ((struct usb_bus_msg *)pm)->bus;
500 udev = bus->devices[USB_ROOT_HUB_ADDR];
501
502 if (udev == NULL || bus->bdev == NULL)
503 return;
504
505 USB_BUS_UNLOCK(bus);
506
507 bus_generic_shutdown(bus->bdev);
508
509 usbd_enum_lock(udev);
510
511 err = usbd_set_config_index(udev, USB_UNCONFIG_INDEX);
512 if (err)
513 device_printf(bus->bdev, "Could not unconfigure root HUB\n");
514
515 USB_BUS_LOCK(bus);
516 bus->hw_power_state = 0;
517 bus->no_explore = 1;
518 USB_BUS_UNLOCK(bus);
519
520 if (bus->methods->set_hw_power != NULL)
521 (bus->methods->set_hw_power) (bus);
522
523 if (bus->methods->set_hw_power_sleep != NULL)
524 (bus->methods->set_hw_power_sleep) (bus, USB_HW_POWER_SHUTDOWN);
525
526 usbd_enum_unlock(udev);
527
528 USB_BUS_LOCK(bus);
529}
530
531static void
532usb_power_wdog(void *arg)
533{
534 struct usb_bus *bus = arg;
722d05c3 535 USB_BUS_LOCK_ASSERT(bus);
12bd3c8b
SW		 536
537 usb_callout_reset(&bus->power_wdog,
538 4 * hz, usb_power_wdog, arg);
539
540#ifdef DDB
541 /*
542 * The following line of code is only here to recover from
543 * DDB:
544 */
545 usb_proc_rewakeup(&bus->explore_proc); /* recover from DDB */
546#endif
547
548#if USB_HAVE_POWERD
549 USB_BUS_UNLOCK(bus);
550
551 usb_bus_power_update(bus);
552
553 USB_BUS_LOCK(bus);
554#endif
555}
556
557/*------------------------------------------------------------------------*
558 * usb_bus_attach
559 *
560 * This function attaches USB in context of the explore thread.
561 *------------------------------------------------------------------------*/
562static void
563usb_bus_attach(struct usb_proc_msg *pm)
564{
565 struct usb_bus *bus;
566 struct usb_device *child;
567 device_t dev;
568 usb_error_t err;
569 enum usb_dev_speed speed;
570
571 bus = ((struct usb_bus_msg *)pm)->bus;
572 dev = bus->bdev;
573
574 DPRINTF("\n");
575
576 switch (bus->usbrev) {
577 case USB_REV_1_0:
578 speed = USB_SPEED_FULL;
579 device_printf(bus->bdev, "12Mbps Full Speed USB v1.0\n");
580 break;
581
582 case USB_REV_1_1:
583 speed = USB_SPEED_FULL;
584 device_printf(bus->bdev, "12Mbps Full Speed USB v1.1\n");
585 break;
586
587 case USB_REV_2_0:
588 speed = USB_SPEED_HIGH;
589 device_printf(bus->bdev, "480Mbps High Speed USB v2.0\n");
590 break;
591
592 case USB_REV_2_5:
593 speed = USB_SPEED_VARIABLE;
594 device_printf(bus->bdev, "480Mbps Wireless USB v2.5\n");
595 break;
596
597 case USB_REV_3_0:
598 speed = USB_SPEED_SUPER;
599 device_printf(bus->bdev, "5.0Gbps Super Speed USB v3.0\n");
600 break;
601
602 default:
603 device_printf(bus->bdev, "Unsupported USB revision\n");
604 usb_root_mount_rel(bus);
605 return;
606 }
607
608 /* default power_mask value */
609 bus->hw_power_state =
610 USB_HW_POWER_CONTROL |
611 USB_HW_POWER_BULK |
612 USB_HW_POWER_INTERRUPT |
613 USB_HW_POWER_ISOC |
614 USB_HW_POWER_NON_ROOT_HUB;
615
616 USB_BUS_UNLOCK(bus);
617
618 /* make sure power is set at least once */
619
620 if (bus->methods->set_hw_power != NULL) {
621 (bus->methods->set_hw_power) (bus);
622 }
623
624 /* allocate the Root USB device */
625
626 child = usb_alloc_device(bus->bdev, bus, NULL, 0, 0, 1,
627 speed, USB_MODE_HOST);
628 if (child) {
629 err = usb_probe_and_attach(child,
630 USB_IFACE_INDEX_ANY);
631 if (!err) {
632 if ((bus->devices[USB_ROOT_HUB_ADDR] == NULL) ||
633 (bus->devices[USB_ROOT_HUB_ADDR]->hub == NULL)) {
634 err = USB_ERR_NO_ROOT_HUB;
635 }
636 }
637 } else {
638 err = USB_ERR_NOMEM;
639 }
640
641 USB_BUS_LOCK(bus);
642
643 if (err) {
644 device_printf(bus->bdev, "Root HUB problem, error=%s\n",
645 usbd_errstr(err));
646 usb_root_mount_rel(bus);
647 }
648
649 /* set softc - we are ready */
650 device_set_softc(dev, bus);
651
652 /* start watchdog */
653 usb_power_wdog(bus);
654}
655
656/*------------------------------------------------------------------------*
657 * usb_attach_sub
658 *
659 * This function creates a thread which runs the USB attach code.
660 *------------------------------------------------------------------------*/
661static void
662usb_attach_sub(device_t dev, struct usb_bus *bus)
663{
664 const char *pname = device_get_nameunit(dev);
665
12bd3c8b
SW		 666 if (usb_devclass_ptr == NULL)
667 usb_devclass_ptr = devclass_find("usbus");
12bd3c8b
SW		 668
669#if USB_HAVE_PF
670 usbpf_attach(bus);
671#endif
672 /* Initialise USB process messages */
673 bus->explore_msg[0].hdr.pm_callback = &usb_bus_explore;
674 bus->explore_msg[0].bus = bus;
675 bus->explore_msg[1].hdr.pm_callback = &usb_bus_explore;
676 bus->explore_msg[1].bus = bus;
677
678 bus->detach_msg[0].hdr.pm_callback = &usb_bus_detach;
679 bus->detach_msg[0].bus = bus;
680 bus->detach_msg[1].hdr.pm_callback = &usb_bus_detach;
681 bus->detach_msg[1].bus = bus;
682
683 bus->attach_msg[0].hdr.pm_callback = &usb_bus_attach;
684 bus->attach_msg[0].bus = bus;
685 bus->attach_msg[1].hdr.pm_callback = &usb_bus_attach;
686 bus->attach_msg[1].bus = bus;
687
688 bus->suspend_msg[0].hdr.pm_callback = &usb_bus_suspend;
689 bus->suspend_msg[0].bus = bus;
690 bus->suspend_msg[1].hdr.pm_callback = &usb_bus_suspend;
691 bus->suspend_msg[1].bus = bus;
692
693 bus->resume_msg[0].hdr.pm_callback = &usb_bus_resume;
694 bus->resume_msg[0].bus = bus;
695 bus->resume_msg[1].hdr.pm_callback = &usb_bus_resume;
696 bus->resume_msg[1].bus = bus;
697
698 bus->shutdown_msg[0].hdr.pm_callback = &usb_bus_shutdown;
699 bus->shutdown_msg[0].bus = bus;
700 bus->shutdown_msg[1].hdr.pm_callback = &usb_bus_shutdown;
701 bus->shutdown_msg[1].bus = bus;
702
703 /* Create USB explore and callback processes */
704
705 if (usb_proc_create(&bus->giant_callback_proc,
722d05c3 706 &bus->bus_lock, pname, USB_PRI_MED)) {
12bd3c8b
SW		 707 device_printf(dev, "WARNING: Creation of USB Giant "
708 "callback process failed.\n");
709 } else if (usb_proc_create(&bus->non_giant_callback_proc,
722d05c3 710 &bus->bus_lock, pname, USB_PRI_HIGH)) {
12bd3c8b
SW		 711 device_printf(dev, "WARNING: Creation of USB non-Giant "
712 "callback process failed.\n");
713 } else if (usb_proc_create(&bus->explore_proc,
722d05c3 714 &bus->bus_lock, pname, USB_PRI_MED)) {
12bd3c8b
SW		 715 device_printf(dev, "WARNING: Creation of USB explore "
716 "process failed.\n");
717 } else if (usb_proc_create(&bus->control_xfer_proc,
722d05c3 718 &bus->bus_lock, pname, USB_PRI_MED)) {
12bd3c8b
SW		 719 device_printf(dev, "WARNING: Creation of USB control transfer "
720 "process failed.\n");
721 } else {
722 /* Get final attach going */
723 USB_BUS_LOCK(bus);
724 usb_proc_msignal(&bus->explore_proc,
725 &bus->attach_msg[0], &bus->attach_msg[1]);
726 USB_BUS_UNLOCK(bus);
727
728 /* Do initial explore */
729 usb_needs_explore(bus, 1);
730 }
731}
732
722d05c3 733SYSUNINIT(usb_bus_unload, SI_SUB_CONFIGURE, SI_ORDER_ANY, usb_bus_unload, NULL);
12bd3c8b
SW		 734
735/*------------------------------------------------------------------------*
736 * usb_bus_mem_flush_all_cb
737 *------------------------------------------------------------------------*/
738#if USB_HAVE_BUSDMA
739static void
740usb_bus_mem_flush_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
741 struct usb_page *pg, usb_size_t size, usb_size_t align)
742{
743 usb_pc_cpu_flush(pc);
744}
745#endif
746
747/*------------------------------------------------------------------------*
748 * usb_bus_mem_flush_all - factored out code
749 *------------------------------------------------------------------------*/
750#if USB_HAVE_BUSDMA
751void
752usb_bus_mem_flush_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb)
753{
754 if (cb) {
755 cb(bus, &usb_bus_mem_flush_all_cb);
756 }
757}
758#endif
759
760/*------------------------------------------------------------------------*
761 * usb_bus_mem_alloc_all_cb
762 *------------------------------------------------------------------------*/
763#if USB_HAVE_BUSDMA
764static void
765usb_bus_mem_alloc_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
766 struct usb_page *pg, usb_size_t size, usb_size_t align)
767{
768 /* need to initialize the page cache */
769 pc->tag_parent = bus->dma_parent_tag;
770
771 if (usb_pc_alloc_mem(pc, pg, size, align)) {
772 bus->alloc_failed = 1;
773 }
774}
775#endif
776
777/*------------------------------------------------------------------------*
778 * usb_bus_mem_alloc_all - factored out code
779 *
780 * Returns:
781 * 0: Success
782 * Else: Failure
783 *------------------------------------------------------------------------*/
784uint8_t
785usb_bus_mem_alloc_all(struct usb_bus *bus, bus_dma_tag_t dmat,
786 usb_bus_mem_cb_t *cb)
787{
788 bus->alloc_failed = 0;
63da4a34 789
722d05c3 790 lockinit(&bus->bus_lock, "USB bus mem", 0, LK_CANRECURSE);
12bd3c8b
SW		 791
792 usb_callout_init_mtx(&bus->power_wdog,
722d05c3 793 &bus->bus_lock, 0);
12bd3c8b
SW		 794
795 TAILQ_INIT(&bus->intr_q.head);
796
797#if USB_HAVE_BUSDMA
798 usb_dma_tag_setup(bus->dma_parent_tag, bus->dma_tags,
722d05c3 799 dmat, &bus->bus_lock, NULL, 32, USB_BUS_DMA_TAG_MAX);
12bd3c8b
SW		 800#endif
801 if ((bus->devices_max > USB_MAX_DEVICES) ||
802 (bus->devices_max < USB_MIN_DEVICES) ||
803 (bus->devices == NULL)) {
804 DPRINTFN(0, "Devices field has not been "
805 "initialised properly\n");
806 bus->alloc_failed = 1; /* failure */
807 }
808#if USB_HAVE_BUSDMA
809 if (cb) {
810 cb(bus, &usb_bus_mem_alloc_all_cb);
811 }
812#endif
813 if (bus->alloc_failed) {
814 usb_bus_mem_free_all(bus, cb);
815 }
816 return (bus->alloc_failed);
817}
818
819/*------------------------------------------------------------------------*
820 * usb_bus_mem_free_all_cb
821 *------------------------------------------------------------------------*/
822#if USB_HAVE_BUSDMA
823static void
824usb_bus_mem_free_all_cb(struct usb_bus *bus, struct usb_page_cache *pc,
825 struct usb_page *pg, usb_size_t size, usb_size_t align)
826{
827 usb_pc_free_mem(pc);
828}
829#endif
830
831/*------------------------------------------------------------------------*
832 * usb_bus_mem_free_all - factored out code
833 *------------------------------------------------------------------------*/
834void
835usb_bus_mem_free_all(struct usb_bus *bus, usb_bus_mem_cb_t *cb)
836{
837#if USB_HAVE_BUSDMA
838 if (cb) {
839 cb(bus, &usb_bus_mem_free_all_cb);
840 }
841 usb_dma_tag_unsetup(bus->dma_parent_tag);
842#endif
843
63da4a34 844 lockuninit(&bus->bus_lock);
12bd3c8b 845}
DragonFly Project GIT Source repo