File:
[DragonFly] /
src /
sys /
bus /
usb /
usb.c
Revision
1.14:
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Wed May 19 22:52:39 2004 UTC (9 years ago) by
dillon
Branches:
MAIN
CVS tags:
HEAD,
DragonFly_Stable,
DragonFly_Snap29Sep2004,
DragonFly_Snap13Sep2004,
DragonFly_RELEASE_1_2_Slip,
DragonFly_RELEASE_1_2,
DragonFly_1_0_REL,
DragonFly_1_0_RC1,
DragonFly_1_0A_REL
Device layer rollup commit.
* cdevsw_add() is now required. cdevsw_add() and cdevsw_remove() may specify
a mask/match indicating the range of supported minor numbers. Multiple
cdevsw_add()'s using the same major number, but distinctly different
ranges, may be issued. All devices that failed to call cdevsw_add() before
now do.
* cdevsw_remove() now automatically marks all devices within its supported
range as being destroyed.
* vnode->v_rdev is no longer resolved when the vnode is created. Instead,
only v_udev (a newly added field) is resolved. v_rdev is resolved when
the vnode is opened and cleared on the last close.
* A great deal of code was making rather dubious assumptions with regards
to the validity of devices associated with vnodes, primarily due to
the persistence of a device structure due to being indexed by (major, minor)
instead of by (cdevsw, major, minor). In particular, if you run a program
which connects to a USB device and then you pull the USB device and plug
it back in, the vnode subsystem will continue to believe that the device
is open when, in fact, it isn't (because it was destroyed and recreated).
In particular, note that all the VFS mount procedures now check devices
via v_udev instead of v_rdev prior to calling VOP_OPEN(), since v_rdev
is NULL prior to the first open.
* The disk layer's device interaction has been rewritten. The disk layer
(i.e. the slice and disklabel management layer) no longer overloads
its data onto the device structure representing the underlying physical
disk. Instead, the disk layer uses the new cdevsw_add() functionality
to register its own cdevsw using the underlying device's major number,
and simply does NOT register the underlying device's cdevsw. No
confusion is created because the device hash is now based on
(cdevsw,major,minor) rather then (major,minor).
NOTE: This also means that underlying raw disk devices may use the entire
device minor number instead of having to reserve the bits used by the disk
layer, and also means that can we (theoretically) stack a fully
disklabel-supported 'disk' on top of any block device.
* The new reference counting scheme prevents this by associating a device
with a cdevsw and disconnecting the device from its cdevsw when the cdevsw
is removed. Additionally, all udev2dev() lookups run through the cdevsw
mask/match and only successfully find devices still associated with an
active cdevsw.
* Major work on MFS: MFS no longer shortcuts vnode and device creation. It
now creates a real vnode and a real device and implements real open and
close VOPs. Additionally, due to the disk layer changes, MFS is no longer
limited to 255 mounts. The new limit is 16 million. Since MFS creates a
real device node, mount_mfs will now create a real /dev/mfs<PID> device
that can be read from userland (e.g. so you can dump an MFS filesystem).
* BUF AND DEVICE STRATEGY changes. The struct buf contains a b_dev field.
In order to properly handle stacked devices we now require that the b_dev
field be initialized before the device strategy routine is called. This
required some additional work in various VFS implementations. To enforce
this requirement, biodone() now sets b_dev to NODEV. The new disk layer
will adjust b_dev before forwarding a request to the actual physical
device.
* A bug in the ISO CD boot sequence which resulted in a panic has been fixed.
Testing by: lots of people, but David Rhodus found the most aggregious bugs.
1: /*
2: * $NetBSD: usb.c,v 1.68 2002/02/20 20:30:12 christos Exp $
3: * $FreeBSD: src/sys/dev/usb/usb.c,v 1.95 2003/11/09 23:54:21 joe Exp $
4: * $DragonFly: src/sys/bus/usb/usb.c,v 1.14 2004/05/19 22:52:39 dillon Exp $
5: */
6:
7: /* Also already merged from NetBSD:
8: * $NetBSD: usb.c,v 1.70 2002/05/09 21:54:32 augustss Exp $
9: * $NetBSD: usb.c,v 1.71 2002/06/01 23:51:04 lukem Exp $
10: * $NetBSD: usb.c,v 1.73 2002/09/23 05:51:19 simonb Exp $
11: */
12:
13: /*
14: * Copyright (c) 1998 The NetBSD Foundation, Inc.
15: * All rights reserved.
16: *
17: * This code is derived from software contributed to The NetBSD Foundation
18: * by Lennart Augustsson (lennart@augustsson.net) at
19: * Carlstedt Research & Technology.
20: *
21: * Redistribution and use in source and binary forms, with or without
22: * modification, are permitted provided that the following conditions
23: * are met:
24: * 1. Redistributions of source code must retain the above copyright
25: * notice, this list of conditions and the following disclaimer.
26: * 2. Redistributions in binary form must reproduce the above copyright
27: * notice, this list of conditions and the following disclaimer in the
28: * documentation and/or other materials provided with the distribution.
29: * 3. All advertising materials mentioning features or use of this software
30: * must display the following acknowledgement:
31: * This product includes software developed by the NetBSD
32: * Foundation, Inc. and its contributors.
33: * 4. Neither the name of The NetBSD Foundation nor the names of its
34: * contributors may be used to endorse or promote products derived
35: * from this software without specific prior written permission.
36: *
37: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
38: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
39: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
40: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
41: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
42: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
43: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
44: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
45: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
47: * POSSIBILITY OF SUCH DAMAGE.
48: */
49:
50: /*
51: * USB specifications and other documentation can be found at
52: * http://www.usb.org/developers/data/ and
53: * http://www.usb.org/developers/index.html .
54: */
55:
56: #include <sys/param.h>
57: #include <sys/systm.h>
58: #include <sys/kernel.h>
59: #include <sys/lock.h>
60: #include <sys/malloc.h>
61: #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
62: #include <sys/mutex.h>
63: #endif
64: #if defined(__NetBSD__) || defined(__OpenBSD__)
65: #include <sys/device.h>
66: #elif defined(__FreeBSD__) || defined(__DragonFly__)
67: #include <sys/unistd.h>
68: #include <sys/module.h>
69: #include <sys/bus.h>
70: #include <sys/filio.h>
71: #include <sys/uio.h>
72: #endif
73: #include <sys/kthread.h>
74: #include <sys/proc.h>
75: #include <sys/conf.h>
76: #include <sys/poll.h>
77: #if defined(__FreeBSD__) && __FreeBSD_version >= 500014
78: #include <sys/selinfo.h>
79: #else
80: #include <sys/select.h>
81: #endif
82: #include <sys/vnode.h>
83: #include <sys/signalvar.h>
84: #include <sys/sysctl.h>
85:
86: #include "usb.h"
87: #include "usbdi.h"
88: #include "usbdi_util.h"
89:
90: #define USBUNIT(d) (minor(d)) /* usb_discover device nodes, kthread */
91: #define USB_DEV_MINOR 255 /* event queue device */
92:
93: #if defined(__FreeBSD__) || defined(__DragonFly__)
94: MALLOC_DEFINE(M_USB, "USB", "USB");
95: MALLOC_DEFINE(M_USBDEV, "USBdev", "USB device");
96: MALLOC_DEFINE(M_USBHC, "USBHC", "USB host controller");
97:
98: #include "usb_if.h"
99: #endif /* defined(__FreeBSD__) */
100:
101: #include <machine/bus.h>
102:
103: #include "usbdivar.h"
104: #include "usb_quirks.h"
105:
106: /* Define this unconditionally in case a kernel module is loaded that
107: * has been compiled with debugging options.
108: */
109: SYSCTL_NODE(_hw, OID_AUTO, usb, CTLFLAG_RW, 0, "USB debugging");
110:
111: #ifdef USB_DEBUG
112: #define DPRINTF(x) if (usbdebug) logprintf x
113: #define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x
114: int usbdebug = 0;
115: SYSCTL_INT(_hw_usb, OID_AUTO, debug, CTLFLAG_RW,
116: &usbdebug, 0, "usb debug level");
117: /*
118: * 0 - do usual exploration
119: * 1 - do not use timeout exploration
120: * >1 - do no exploration
121: */
122: int usb_noexplore = 0;
123: #else
124: #define DPRINTF(x)
125: #define DPRINTFN(n,x)
126: #endif
127:
128: struct usb_softc {
129: USBBASEDEVICE sc_dev; /* base device */
130: usbd_bus_handle sc_bus; /* USB controller */
131: struct usbd_port sc_port; /* dummy port for root hub */
132:
133: struct thread *sc_event_thread;
134:
135: char sc_dying;
136: };
137:
138: TAILQ_HEAD(, usb_task) usb_all_tasks;
139:
140: #if defined(__NetBSD__) || defined(__OpenBSD__)
141: cdev_decl(usb);
142: #elif defined(__FreeBSD__) || defined(__DragonFly__)
143: d_open_t usbopen;
144: d_close_t usbclose;
145: d_read_t usbread;
146: d_ioctl_t usbioctl;
147: int usbpoll(dev_t, int, usb_proc_ptr);
148:
149: struct cdevsw usb_cdevsw = {
150: /* name */ "usb",
151: /* maj */ USB_CDEV_MAJOR,
152: /* flags */ 0,
153: /* port */ NULL,
154: /* clone */ NULL,
155:
156: /* open */ usbopen,
157: /* close */ usbclose,
158: /* read */ usbread,
159: /* write */ nowrite,
160: /* ioctl */ usbioctl,
161: /* poll */ usbpoll,
162: /* mmap */ nommap,
163: /* strategy */ nostrategy,
164: /* dump */ nodump,
165: /* psize */ nopsize
166: };
167: #endif
168:
169: Static void usb_discover(void *);
170: Static void usb_create_event_thread(void *);
171: Static void usb_event_thread(void *);
172: Static void usb_task_thread(void *);
173: Static usb_proc_ptr usb_task_thread_proc = NULL;
174:
175: #define USB_MAX_EVENTS 100
176: struct usb_event_q {
177: struct usb_event ue;
178: TAILQ_ENTRY(usb_event_q) next;
179: };
180: Static TAILQ_HEAD(, usb_event_q) usb_events =
181: TAILQ_HEAD_INITIALIZER(usb_events);
182: Static int usb_nevents = 0;
183: Static struct selinfo usb_selevent;
184: Static struct proc *usb_async_proc; /* process that wants USB SIGIO */
185: Static int usb_dev_open = 0;
186: Static void usb_add_event(int, struct usb_event *);
187:
188: Static int usb_get_next_event(struct usb_event *);
189:
190: #if defined(__NetBSD__) || defined(__OpenBSD__)
191: /* Flag to see if we are in the cold boot process. */
192: extern int cold;
193: #endif
194:
195: Static const char *usbrev_str[] = USBREV_STR;
196:
197: USB_DECLARE_DRIVER_INIT(usb,
198: DEVMETHOD(device_suspend, bus_generic_suspend),
199: DEVMETHOD(device_resume, bus_generic_resume),
200: DEVMETHOD(device_shutdown, bus_generic_shutdown)
201: );
202:
203: #if defined(__FreeBSD__) || defined(__DragonFly__)
204: MODULE_VERSION(usb, 1);
205: #endif
206:
207: USB_MATCH(usb)
208: {
209: DPRINTF(("usbd_match\n"));
210: return (UMATCH_GENERIC);
211: }
212:
213: USB_ATTACH(usb)
214: {
215: #if defined(__NetBSD__) || defined(__OpenBSD__)
216: struct usb_softc *sc = (struct usb_softc *)self;
217: #elif defined(__FreeBSD__) || defined(__DragonFly__)
218: struct usb_softc *sc = device_get_softc(self);
219: void *aux = device_get_ivars(self);
220: static int global_init_done = 0;
221: #endif
222: usbd_device_handle dev;
223: usbd_status err;
224: int usbrev;
225: int speed;
226: struct usb_event ue;
227:
228: sc->sc_dev = self;
229:
230: DPRINTF(("usbd_attach\n"));
231:
232: usbd_init();
233: sc->sc_bus = aux;
234: sc->sc_bus->usbctl = sc;
235: sc->sc_port.power = USB_MAX_POWER;
236:
237: #if defined(__FreeBSD__) || defined(__DragonFly__)
238: printf("%s", USBDEVNAME(sc->sc_dev));
239: #endif
240: usbrev = sc->sc_bus->usbrev;
241: printf(": USB revision %s", usbrev_str[usbrev]);
242: switch (usbrev) {
243: case USBREV_1_0:
244: case USBREV_1_1:
245: speed = USB_SPEED_FULL;
246: break;
247: case USBREV_2_0:
248: speed = USB_SPEED_HIGH;
249: break;
250: default:
251: printf(", not supported\n");
252: sc->sc_dying = 1;
253: USB_ATTACH_ERROR_RETURN;
254: }
255: printf("\n");
256:
257: /* Make sure not to use tsleep() if we are cold booting. */
258: if (cold)
259: sc->sc_bus->use_polling++;
260:
261: ue.u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev);
262: usb_add_event(USB_EVENT_CTRLR_ATTACH, &ue);
263:
264: #ifdef USB_USE_SOFTINTR
265: #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
266: /* XXX we should have our own level */
267: sc->sc_bus->soft = softintr_establish(IPL_SOFTNET,
268: sc->sc_bus->methods->soft_intr, sc->sc_bus);
269: if (sc->sc_bus->soft == NULL) {
270: printf("%s: can't register softintr\n", USBDEVNAME(sc->sc_dev));
271: sc->sc_dying = 1;
272: USB_ATTACH_ERROR_RETURN;
273: }
274: #else
275: usb_callout_init(sc->sc_bus->softi);
276: #endif
277: #endif
278:
279: err = usbd_new_device(USBDEV(sc->sc_dev), sc->sc_bus, 0, speed, 0,
280: &sc->sc_port);
281: if (!err) {
282: dev = sc->sc_port.device;
283: if (dev->hub == NULL) {
284: sc->sc_dying = 1;
285: printf("%s: root device is not a hub\n",
286: USBDEVNAME(sc->sc_dev));
287: USB_ATTACH_ERROR_RETURN;
288: }
289: sc->sc_bus->root_hub = dev;
290: #if 1
291: /*
292: * Turning this code off will delay attachment of USB devices
293: * until the USB event thread is running, which means that
294: * the keyboard will not work until after cold boot.
295: */
296: #if defined(__FreeBSD__) || defined(__DragonFly__)
297: if (cold)
298: #else
299: if (cold && (sc->sc_dev.dv_cfdata->cf_flags & 1))
300: #endif
301: dev->hub->explore(sc->sc_bus->root_hub);
302: #endif
303: } else {
304: printf("%s: root hub problem, error=%d\n",
305: USBDEVNAME(sc->sc_dev), err);
306: sc->sc_dying = 1;
307: }
308: if (cold)
309: sc->sc_bus->use_polling--;
310:
311: config_pending_incr();
312: #if defined(__NetBSD__) || defined(__OpenBSD__)
313: usb_kthread_create(usb_create_event_thread, sc);
314: #endif
315:
316: #if defined(__FreeBSD__) || defined(__DragonFly__)
317: usb_create_event_thread(sc);
318: /* The per controller devices (used for usb_discover) */
319: /* XXX This is redundant now, but old usbd's will want it */
320: if (!global_init_done) {
321: /* The device spitting out events */
322: cdevsw_add(&usb_cdevsw, -1, USB_DEV_MINOR);
323: make_dev(&usb_cdevsw, USB_DEV_MINOR, UID_ROOT, GID_OPERATOR,
324: 0660, "usb");
325: global_init_done = 1;
326: }
327: cdevsw_add(&usb_cdevsw, -1, device_get_unit(self));
328: make_dev(&usb_cdevsw, device_get_unit(self), UID_ROOT, GID_OPERATOR,
329: 0660, "usb%d", device_get_unit(self));
330: #endif
331:
332: USB_ATTACH_SUCCESS_RETURN;
333: }
334:
335: void
336: usb_create_event_thread(void *arg)
337: {
338: struct usb_softc *sc = arg;
339: static int created = 0;
340:
341: if (usb_kthread_create1(usb_event_thread, sc, &sc->sc_event_thread,
342: "%s", USBDEVNAME(sc->sc_dev))) {
343: printf("%s: unable to create event thread for\n",
344: USBDEVNAME(sc->sc_dev));
345: panic("usb_create_event_thread");
346: }
347: if (!created) {
348: created = 1;
349: TAILQ_INIT(&usb_all_tasks);
350: if (usb_kthread_create2(usb_task_thread, NULL,
351: &usb_task_thread_proc, "usbtask")) {
352: printf("unable to create task thread\n");
353: panic("usb_create_event_thread task");
354: }
355: }
356: }
357:
358: /*
359: * Add a task to be performed by the task thread. This function can be
360: * called from any context and the task will be executed in a process
361: * context ASAP.
362: */
363: void
364: usb_add_task(usbd_device_handle dev, struct usb_task *task)
365: {
366: int s;
367:
368: s = splusb();
369: if (!task->onqueue) {
370: DPRINTFN(2,("usb_add_task: task=%p\n", task));
371: TAILQ_INSERT_TAIL(&usb_all_tasks, task, next);
372: task->onqueue = 1;
373: } else {
374: DPRINTFN(3,("usb_add_task: task=%p on q\n", task));
375: }
376: wakeup(&usb_all_tasks);
377: splx(s);
378: }
379:
380: void
381: usb_rem_task(usbd_device_handle dev, struct usb_task *task)
382: {
383: int s;
384:
385: s = splusb();
386: if (task->onqueue) {
387: TAILQ_REMOVE(&usb_all_tasks, task, next);
388: task->onqueue = 0;
389: }
390: splx(s);
391: }
392:
393: void
394: usb_event_thread(void *arg)
395: {
396: struct usb_softc *sc = arg;
397:
398: DPRINTF(("usb_event_thread: start\n"));
399:
400: /*
401: * In case this controller is a companion controller to an
402: * EHCI controller we need to wait until the EHCI controller
403: * has grabbed the port.
404: * XXX It would be nicer to do this with a tsleep(), but I don't
405: * know how to synchronize the creation of the threads so it
406: * will work.
407: */
408: usb_delay_ms(sc->sc_bus, 500);
409:
410: /* Make sure first discover does something. */
411: sc->sc_bus->needs_explore = 1;
412: usb_discover(sc);
413: config_pending_decr();
414:
415: while (!sc->sc_dying) {
416: #ifdef USB_DEBUG
417: if (usb_noexplore < 2)
418: #endif
419: usb_discover(sc);
420: #ifdef USB_DEBUG
421: (void)tsleep(&sc->sc_bus->needs_explore, 0, "usbevt",
422: usb_noexplore ? 0 : hz * 60);
423: #else
424: (void)tsleep(&sc->sc_bus->needs_explore, 0, "usbevt",
425: hz * 60);
426: #endif
427: DPRINTFN(2,("usb_event_thread: woke up\n"));
428: }
429: sc->sc_event_thread = NULL;
430:
431: /* In case parent is waiting for us to exit. */
432: wakeup(sc);
433:
434: DPRINTF(("usb_event_thread: exit\n"));
435: kthread_exit();
436: }
437:
438: void
439: usb_task_thread(void *arg)
440: {
441: struct usb_task *task;
442: int s;
443:
444: #if defined(__FreeBSD__) && __FreeBSD_version >= 500000
445: mtx_lock(&Giant);
446: #endif
447:
448: DPRINTF(("usb_task_thread: start\n"));
449:
450: s = splusb();
451: for (;;) {
452: task = TAILQ_FIRST(&usb_all_tasks);
453: if (task == NULL) {
454: tsleep(&usb_all_tasks, 0, "usbtsk", 0);
455: task = TAILQ_FIRST(&usb_all_tasks);
456: }
457: DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task));
458: if (task != NULL) {
459: TAILQ_REMOVE(&usb_all_tasks, task, next);
460: task->onqueue = 0;
461: splx(s);
462: task->fun(task->arg);
463: s = splusb();
464: }
465: }
466: }
467:
468: #if defined(__NetBSD__) || defined(__OpenBSD__)
469: int
470: usbctlprint(void *aux, const char *pnp)
471: {
472: /* only "usb"es can attach to host controllers */
473: if (pnp)
474: printf("usb at %s", pnp);
475:
476: return (UNCONF);
477: }
478: #endif /* defined(__NetBSD__) || defined(__OpenBSD__) */
479:
480: int
481: usbopen(dev_t dev, int flag, int mode, usb_proc_ptr p)
482: {
483: int unit = USBUNIT(dev);
484: struct usb_softc *sc;
485:
486: if (unit == USB_DEV_MINOR) {
487: if (usb_dev_open)
488: return (EBUSY);
489: usb_dev_open = 1;
490: usb_async_proc = NULL;
491: return (0);
492: }
493:
494: USB_GET_SC_OPEN(usb, unit, sc);
495:
496: if (sc->sc_dying)
497: return (EIO);
498:
499: return (0);
500: }
501:
502: int
503: usbread(dev_t dev, struct uio *uio, int flag)
504: {
505: struct usb_event ue;
506: int unit = USBUNIT(dev);
507: int s, error, n;
508:
509: if (unit != USB_DEV_MINOR)
510: return (ENODEV);
511:
512: if (uio->uio_resid != sizeof(struct usb_event))
513: return (EINVAL);
514:
515: error = 0;
516: s = splusb();
517: for (;;) {
518: n = usb_get_next_event(&ue);
519: if (n != 0)
520: break;
521: if (flag & IO_NDELAY) {
522: error = EWOULDBLOCK;
523: break;
524: }
525: error = tsleep(&usb_events, PCATCH, "usbrea", 0);
526: if (error)
527: break;
528: }
529: splx(s);
530: if (!error)
531: error = uiomove((void *)&ue, uio->uio_resid, uio);
532:
533: return (error);
534: }
535:
536: int
537: usbclose(dev_t dev, int flag, int mode, usb_proc_ptr p)
538: {
539: int unit = USBUNIT(dev);
540:
541: if (unit == USB_DEV_MINOR) {
542: usb_async_proc = NULL;
543: usb_dev_open = 0;
544: }
545:
546: return (0);
547: }
548:
549: int
550: usbioctl(dev_t devt, u_long cmd, caddr_t data, int flag, usb_proc_ptr p)
551: {
552: struct usb_softc *sc;
553: int unit = USBUNIT(devt);
554:
555: if (unit == USB_DEV_MINOR) {
556: switch (cmd) {
557: case FIONBIO:
558: /* All handled in the upper FS layer. */
559: return (0);
560:
561: case FIOASYNC:
562: if (*(int *)data)
563: #if defined(__DragonFly__)
564: usb_async_proc = p->td_proc;
565: #elif __FreeBSD_version >= 500000
566: usb_async_proc = p->td_proc;
567: #else
568: usb_async_proc = p;
569: #endif
570: else
571: usb_async_proc = NULL;
572: return (0);
573:
574: default:
575: return (EINVAL);
576: }
577: }
578:
579: USB_GET_SC(usb, unit, sc);
580:
581: if (sc->sc_dying)
582: return (EIO);
583:
584: switch (cmd) {
585: #if defined(__FreeBSD__) || defined(__DragonFly__)
586: /* This part should be deleted */
587: case USB_DISCOVER:
588: break;
589: #endif
590: case USB_REQUEST:
591: {
592: struct usb_ctl_request *ur = (void *)data;
593: int len = UGETW(ur->ucr_request.wLength);
594: struct iovec iov;
595: struct uio uio;
596: void *ptr = 0;
597: int addr = ur->ucr_addr;
598: usbd_status err;
599: int error = 0;
600:
601: DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len));
602: if (len < 0 || len > 32768)
603: return (EINVAL);
604: if (addr < 0 || addr >= USB_MAX_DEVICES ||
605: sc->sc_bus->devices[addr] == 0)
606: return (EINVAL);
607: if (len != 0) {
608: iov.iov_base = (caddr_t)ur->ucr_data;
609: iov.iov_len = len;
610: uio.uio_iov = &iov;
611: uio.uio_iovcnt = 1;
612: uio.uio_resid = len;
613: uio.uio_offset = 0;
614: uio.uio_segflg = UIO_USERSPACE;
615: uio.uio_rw =
616: ur->ucr_request.bmRequestType & UT_READ ?
617: UIO_READ : UIO_WRITE;
618: uio.uio_td = p;
619: ptr = malloc(len, M_TEMP, M_WAITOK);
620: if (uio.uio_rw == UIO_WRITE) {
621: error = uiomove(ptr, len, &uio);
622: if (error)
623: goto ret;
624: }
625: }
626: err = usbd_do_request_flags(sc->sc_bus->devices[addr],
627: &ur->ucr_request, ptr, ur->ucr_flags, &ur->ucr_actlen,
628: USBD_DEFAULT_TIMEOUT);
629: if (err) {
630: error = EIO;
631: goto ret;
632: }
633: if (len != 0) {
634: if (uio.uio_rw == UIO_READ) {
635: error = uiomove(ptr, len, &uio);
636: if (error)
637: goto ret;
638: }
639: }
640: ret:
641: if (ptr)
642: free(ptr, M_TEMP);
643: return (error);
644: }
645:
646: case USB_DEVICEINFO:
647: {
648: struct usb_device_info *di = (void *)data;
649: int addr = di->udi_addr;
650: usbd_device_handle dev;
651:
652: if (addr < 1 || addr >= USB_MAX_DEVICES)
653: return (EINVAL);
654: dev = sc->sc_bus->devices[addr];
655: if (dev == NULL)
656: return (ENXIO);
657: usbd_fill_deviceinfo(dev, di, 1);
658: break;
659: }
660:
661: case USB_DEVICESTATS:
662: *(struct usb_device_stats *)data = sc->sc_bus->stats;
663: break;
664:
665: default:
666: return (EINVAL);
667: }
668: return (0);
669: }
670:
671: int
672: usbpoll(dev_t dev, int events, usb_proc_ptr p)
673: {
674: int revents, mask, s;
675: int unit = USBUNIT(dev);
676:
677: if (unit == USB_DEV_MINOR) {
678: revents = 0;
679: mask = POLLIN | POLLRDNORM;
680:
681: s = splusb();
682: if (events & mask && usb_nevents > 0)
683: revents |= events & mask;
684: if (revents == 0 && events & mask)
685: selrecord(p, &usb_selevent);
686: splx(s);
687:
688: return (revents);
689: } else {
690: #if defined(__FreeBSD__) || defined(__DragonFly__)
691: return (0); /* select/poll never wakes up - back compat */
692: #else
693: return (ENXIO);
694: #endif
695: }
696: }
697:
698: /* Explore device tree from the root. */
699: Static void
700: usb_discover(void *v)
701: {
702: struct usb_softc *sc = v;
703:
704: #if defined(__FreeBSD__) || defined(__DragonFly__)
705: /* splxxx should be changed to mutexes for preemption safety some day */
706: int s;
707: #endif
708:
709: DPRINTFN(2,("usb_discover\n"));
710: #ifdef USB_DEBUG
711: if (usb_noexplore > 1)
712: return;
713: #endif
714:
715: /*
716: * We need mutual exclusion while traversing the device tree,
717: * but this is guaranteed since this function is only called
718: * from the event thread for the controller.
719: */
720: #if defined(__FreeBSD__) || defined(__DragonFly__)
721: s = splusb();
722: #endif
723: while (sc->sc_bus->needs_explore && !sc->sc_dying) {
724: sc->sc_bus->needs_explore = 0;
725: #if defined(__FreeBSD__) || defined(__DragonFly__)
726: splx(s);
727: #endif
728: sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub);
729: #if defined(__FreeBSD__) || defined(__DragonFly__)
730: s = splusb();
731: #endif
732: }
733: #if defined(__FreeBSD__) || defined(__DragonFly__)
734: splx(s);
735: #endif
736: }
737:
738: void
739: usb_needs_explore(usbd_device_handle dev)
740: {
741: DPRINTFN(2,("usb_needs_explore\n"));
742: dev->bus->needs_explore = 1;
743: wakeup(&dev->bus->needs_explore);
744: }
745:
746: /* Called at splusb() */
747: int
748: usb_get_next_event(struct usb_event *ue)
749: {
750: struct usb_event_q *ueq;
751:
752: if (usb_nevents <= 0)
753: return (0);
754: ueq = TAILQ_FIRST(&usb_events);
755: #ifdef DIAGNOSTIC
756: if (ueq == NULL) {
757: printf("usb: usb_nevents got out of sync! %d\n", usb_nevents);
758: usb_nevents = 0;
759: return (0);
760: }
761: #endif
762: *ue = ueq->ue;
763: TAILQ_REMOVE(&usb_events, ueq, next);
764: free(ueq, M_USBDEV);
765: usb_nevents--;
766: return (1);
767: }
768:
769: void
770: usbd_add_dev_event(int type, usbd_device_handle udev)
771: {
772: struct usb_event ue;
773:
774: usbd_fill_deviceinfo(udev, &ue.u.ue_device, USB_EVENT_IS_ATTACH(type));
775: usb_add_event(type, &ue);
776: }
777:
778: void
779: usbd_add_drv_event(int type, usbd_device_handle udev, device_ptr_t dev)
780: {
781: struct usb_event ue;
782:
783: ue.u.ue_driver.ue_cookie = udev->cookie;
784: strncpy(ue.u.ue_driver.ue_devname, USBDEVPTRNAME(dev),
785: sizeof ue.u.ue_driver.ue_devname);
786: usb_add_event(type, &ue);
787: }
788:
789: void
790: usb_add_event(int type, struct usb_event *uep)
791: {
792: struct usb_event_q *ueq;
793: struct usb_event ue;
794: struct timeval thetime;
795: int s;
796:
797: ueq = malloc(sizeof *ueq, M_USBDEV, M_INTWAIT);
798: ueq->ue = *uep;
799: ueq->ue.ue_type = type;
800: microtime(&thetime);
801: TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time);
802:
803: s = splusb();
804: if (USB_EVENT_IS_DETACH(type)) {
805: struct usb_event_q *ueqi, *ueqi_next;
806:
807: for (ueqi = TAILQ_FIRST(&usb_events); ueqi; ueqi = ueqi_next) {
808: ueqi_next = TAILQ_NEXT(ueqi, next);
809: if (ueqi->ue.u.ue_driver.ue_cookie.cookie ==
810: uep->u.ue_device.udi_cookie.cookie) {
811: TAILQ_REMOVE(&usb_events, ueqi, next);
812: free(ueqi, M_USBDEV);
813: usb_nevents--;
814: ueqi_next = TAILQ_FIRST(&usb_events);
815: }
816: }
817: }
818: if (usb_nevents >= USB_MAX_EVENTS) {
819: /* Too many queued events, drop an old one. */
820: DPRINTF(("usb: event dropped\n"));
821: (void)usb_get_next_event(&ue);
822: }
823: TAILQ_INSERT_TAIL(&usb_events, ueq, next);
824: usb_nevents++;
825: wakeup(&usb_events);
826: selwakeuppri(&usb_selevent, 0);
827: if (usb_async_proc != NULL) {
828: PROC_LOCK(usb_async_proc);
829: psignal(usb_async_proc, SIGIO);
830: PROC_UNLOCK(usb_async_proc);
831: }
832: splx(s);
833: }
834:
835: void
836: usb_schedsoftintr(usbd_bus_handle bus)
837: {
838: DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus->use_polling));
839: #ifdef USB_USE_SOFTINTR
840: if (bus->use_polling) {
841: bus->methods->soft_intr(bus);
842: } else {
843: #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
844: softintr_schedule(bus->soft);
845: #else
846: if (!callout_pending(&bus->softi))
847: callout_reset(&bus->softi, 0, bus->methods->soft_intr,
848: bus);
849: #endif /* __HAVE_GENERIC_SOFT_INTERRUPTS */
850: }
851: #else
852: bus->methods->soft_intr(bus);
853: #endif /* USB_USE_SOFTINTR */
854: }
855:
856:
857: #if defined(__NetBSD__) || defined(__OpenBSD__)
858: int
859: usb_activate(device_ptr_t self, enum devact act)
860: {
861: struct usb_softc *sc = (struct usb_softc *)self;
862: usbd_device_handle dev = sc->sc_port.device;
863: int i, rv = 0;
864:
865: switch (act) {
866: case DVACT_ACTIVATE:
867: return (EOPNOTSUPP);
868:
869: case DVACT_DEACTIVATE:
870: sc->sc_dying = 1;
871: if (dev != NULL && dev->cdesc != NULL && dev->subdevs != NULL) {
872: for (i = 0; dev->subdevs[i]; i++)
873: rv |= config_deactivate(dev->subdevs[i]);
874: }
875: break;
876: }
877: return (rv);
878: }
879:
880: int
881: usb_detach(device_ptr_t self, int flags)
882: {
883: struct usb_softc *sc = (struct usb_softc *)self;
884: struct usb_event ue;
885:
886: DPRINTF(("usb_detach: start\n"));
887:
888: sc->sc_dying = 1;
889:
890: /* Make all devices disconnect. */
891: if (sc->sc_port.device != NULL)
892: usb_disconnect_port(&sc->sc_port, self);
893:
894: /* Kill off event thread. */
895: if (sc->sc_event_thread != NULL) {
896: wakeup(&sc->sc_bus->needs_explore);
897: if (tsleep(sc, 0, "usbdet", hz * 60))
898: printf("%s: event thread didn't die\n",
899: USBDEVNAME(sc->sc_dev));
900: DPRINTF(("usb_detach: event thread dead\n"));
901: }
902:
903: usbd_finish();
904:
905: #ifdef USB_USE_SOFTINTR
906: #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
907: if (sc->sc_bus->soft != NULL) {
908: softintr_disestablish(sc->sc_bus->soft);
909: sc->sc_bus->soft = NULL;
910: }
911: #else
912: callout_stop(&sc->sc_bus->softi);
913: #endif
914: #endif
915:
916: ue.u.ue_ctrlr.ue_bus = USBDEVUNIT(sc->sc_dev);
917: usb_add_event(USB_EVENT_CTRLR_DETACH, &ue);
918:
919: return (0);
920: }
921: #elif defined(__FreeBSD__) || defined(__DragonFly__)
922: int
923: usb_detach(device_t self)
924: {
925: DPRINTF(("%s: unload, prevented\n", USBDEVNAME(self)));
926:
927: return (EINVAL);
928: }
929: #endif
930:
931:
932: #if defined(__FreeBSD__) || defined(__DragonFly__)
933: DRIVER_MODULE(usb, ohci, usb_driver, usb_devclass, 0, 0);
934: DRIVER_MODULE(usb, uhci, usb_driver, usb_devclass, 0, 0);
935: DRIVER_MODULE(usb, ehci, usb_driver, usb_devclass, 0, 0);
936: #endif
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