DEVFS - remove dev_ops_add(), dev_ops_get(), and get_dev()
[dragonfly.git] / sys / bus / usb / usb.c
CommitLineData
e937bfce
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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 1.106 2005/03/27 15:31:23 iedowse Exp $
6e46c965 4 * $DragonFly: src/sys/bus/usb/usb.c,v 1.50 2008/09/26 08:21:22 hasso Exp $
e937bfce 5 */
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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 $
281cf3c2 11 * $NetBSD: usb.c,v 1.80 2003/11/07 17:03:25 wiz Exp $
1550dfd9 12 */
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13
14/*
15 * Copyright (c) 1998 The NetBSD Foundation, Inc.
16 * All rights reserved.
17 *
18 * This code is derived from software contributed to The NetBSD Foundation
19 * by Lennart Augustsson (lennart@augustsson.net) at
20 * Carlstedt Research & Technology.
21 *
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
24 * are met:
25 * 1. Redistributions of source code must retain the above copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * This product includes software developed by the NetBSD
33 * Foundation, Inc. and its contributors.
34 * 4. Neither the name of The NetBSD Foundation nor the names of its
35 * contributors may be used to endorse or promote products derived
36 * from this software without specific prior written permission.
37 *
38 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
39 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
40 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
42 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
43 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
44 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
45 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
46 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
47 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
48 * POSSIBILITY OF SUCH DAMAGE.
49 */
50
51/*
52 * USB specifications and other documentation can be found at
281cf3c2
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53 * http://www.usb.org/developers/docs/ and
54 * http://www.usb.org/developers/devclass_docs/
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55 */
56
57#include <sys/param.h>
58#include <sys/systm.h>
59#include <sys/kernel.h>
1550dfd9 60#include <sys/lock.h>
984263bc 61#include <sys/malloc.h>
1550dfd9 62#include <sys/unistd.h>
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63#include <sys/module.h>
64#include <sys/bus.h>
281cf3c2 65#include <sys/fcntl.h>
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66#include <sys/filio.h>
67#include <sys/uio.h>
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68#include <sys/kthread.h>
69#include <sys/proc.h>
984263bc 70#include <sys/conf.h>
fef8985e 71#include <sys/device.h>
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72#include <sys/poll.h>
73#include <sys/select.h>
74#include <sys/vnode.h>
75#include <sys/signalvar.h>
76#include <sys/sysctl.h>
4e01b467 77#include <sys/thread2.h>
984263bc 78
281cf3c2
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79#include <bus/usb/usb.h>
80#include <bus/usb/usbdi.h>
81#include <bus/usb/usbdi_util.h>
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82
83#define USBUNIT(d) (minor(d)) /* usb_discover device nodes, kthread */
84#define USB_DEV_MINOR 255 /* event queue device */
85
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86MALLOC_DEFINE(M_USB, "USB", "USB");
87MALLOC_DEFINE(M_USBDEV, "USBdev", "USB device");
88MALLOC_DEFINE(M_USBHC, "USBHC", "USB host controller");
89
90#include "usb_if.h"
984263bc 91
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92#include <bus/usb/usbdivar.h>
93#include <bus/usb/usb_quirks.h>
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94
95/* Define this unconditionally in case a kernel module is loaded that
96 * has been compiled with debugging options.
97 */
98SYSCTL_NODE(_hw, OID_AUTO, usb, CTLFLAG_RW, 0, "USB debugging");
99
eabfb7a3
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100/*
101 * XXX: This is a hack! If your USB keyboard doesn't work
102 * early at boot, try setting this tunable to 0 from
103 * bootleader:
104 *
105 * set hw.usb.hack_defer_exploration=0
106 */
107static int hack_defer_exploration = 1;
108
984263bc 109#ifdef USB_DEBUG
fc1ef497
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110#define DPRINTF(x) if (usbdebug) kprintf x
111#define DPRINTFN(n,x) if (usbdebug>(n)) kprintf x
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112int usbdebug = 0;
113SYSCTL_INT(_hw_usb, OID_AUTO, debug, CTLFLAG_RW,
114 &usbdebug, 0, "usb debug level");
eabfb7a3 115
1550dfd9 116/*
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117 * 0 - do usual exploration
118 * 1 - do not use timeout exploration
119 * >1 - do no exploration
120 */
121int usb_noexplore = 0;
122#else
123#define DPRINTF(x)
124#define DPRINTFN(n,x)
125#endif
126
127struct usb_softc {
281cf3c2 128 cdev_t sc_usbdev;
5d0fb0e6 129 TAILQ_ENTRY(usb_softc) sc_coldexplist; /* cold needs-explore list */
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130 usbd_bus_handle sc_bus; /* USB controller */
131 struct usbd_port sc_port; /* dummy port for root hub */
132
1550dfd9 133 struct thread *sc_event_thread;
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134
135 char sc_dying;
136};
137
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138struct usb_taskq {
139 TAILQ_HEAD(, usb_task) tasks;
375a9af6 140 struct thread *task_thread_proc;
281cf3c2
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141 const char *name;
142 int taskcreated; /* task thread exists. */
143};
144static struct usb_taskq usb_taskq[USB_NUM_TASKQS];
1550dfd9 145
1550dfd9 146d_open_t usbopen;
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147d_close_t usbclose;
148d_read_t usbread;
149d_ioctl_t usbioctl;
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150d_poll_t usbpoll;
151
152struct dev_ops usb_ops = {
153 { "usb", USB_CDEV_MAJOR, 0 },
154 .d_open = usbopen,
155 .d_close = usbclose,
156 .d_read = usbread,
157 .d_ioctl = usbioctl,
158 .d_poll = usbpoll,
984263bc 159};
984263bc 160
b9bd1250 161static void usb_discover(device_t);
6ed427ca 162static bus_child_detached_t usb_child_detached;
b9bd1250 163static void usb_create_event_thread(device_t);
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164static void usb_event_thread(void *);
165static void usb_task_thread(void *);
281cf3c2 166
6ed427ca 167static cdev_t usb_dev; /* The /dev/usb device. */
4b83f092 168static int usb_ndevs; /* Number of /dev/usbN devices. */
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169/* Busses to explore at the end of boot-time device configuration */
170static TAILQ_HEAD(, usb_softc) usb_coldexplist =
171 TAILQ_HEAD_INITIALIZER(usb_coldexplist);
172
1550dfd9 173#define USB_MAX_EVENTS 100
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174struct usb_event_q {
175 struct usb_event ue;
1550dfd9 176 TAILQ_ENTRY(usb_event_q) next;
984263bc 177};
6ed427ca 178static TAILQ_HEAD(, usb_event_q) usb_events =
1550dfd9 179 TAILQ_HEAD_INITIALIZER(usb_events);
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180static int usb_nevents = 0;
181static struct selinfo usb_selevent;
182static struct proc *usb_async_proc; /* process that wants USB SIGIO */
183static int usb_dev_open = 0;
184static void usb_add_event(int, struct usb_event *);
984263bc 185
6ed427ca 186static int usb_get_next_event(struct usb_event *);
984263bc 187
6ed427ca 188static const char *usbrev_str[] = USBREV_STR;
984263bc 189
61b69189
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190static device_probe_t usb_match;
191static device_attach_t usb_attach;
192static device_detach_t usb_detach;
193
194static devclass_t usb_devclass;
195
196static kobj_method_t usb_methods[] = {
197 DEVMETHOD(device_probe, usb_match),
198 DEVMETHOD(device_attach, usb_attach),
199 DEVMETHOD(device_detach, usb_detach),
200 DEVMETHOD(bus_child_detached, usb_child_detached),
201 DEVMETHOD(device_suspend, bus_generic_suspend),
202 DEVMETHOD(device_resume, bus_generic_resume),
203 DEVMETHOD(device_shutdown, bus_generic_shutdown),
204 {0,0}
205};
206
207static driver_t usb_driver = {
208 "usb",
209 usb_methods,
210 sizeof(struct usb_softc)
211};
984263bc 212
61b69189 213MODULE_DEPEND(usb, usb, 1, 1, 1);
1550dfd9 214MODULE_VERSION(usb, 1);
1550dfd9 215
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216static int
217usb_match(device_t self)
984263bc 218{
4b83f092 219 DPRINTF(("usb_match\n"));
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220 return (UMATCH_GENERIC);
221}
222
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223static int
224usb_attach(device_t self)
984263bc 225{
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226 struct usb_softc *sc = device_get_softc(self);
227 void *aux = device_get_ivars(self);
281cf3c2 228 cdev_t tmp_dev;
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229 usbd_device_handle dev;
230 usbd_status err;
231 int usbrev;
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232 int speed;
233 struct usb_event ue;
984263bc 234
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235 TUNABLE_INT_FETCH("hw.usb.hack_defer_exploration",
236 &hack_defer_exploration);
237
4b83f092 238 DPRINTF(("usb_attach\n"));
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239
240 usbd_init();
241 sc->sc_bus = aux;
242 sc->sc_bus->usbctl = sc;
243 sc->sc_port.power = USB_MAX_POWER;
244
984263bc 245 usbrev = sc->sc_bus->usbrev;
b9bd1250 246 device_printf(self, "USB revision %s", usbrev_str[usbrev]);
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247 switch (usbrev) {
248 case USBREV_1_0:
249 case USBREV_1_1:
250 speed = USB_SPEED_FULL;
251 break;
252 case USBREV_2_0:
253 speed = USB_SPEED_HIGH;
254 break;
255 default:
85f8e2ea 256 kprintf(", not supported\n");
1550dfd9 257 sc->sc_dying = 1;
e785a5d9 258 return ENXIO;
984263bc 259 }
85f8e2ea 260 kprintf("\n");
984263bc 261
1550dfd9 262 /* Make sure not to use tsleep() if we are cold booting. */
eabfb7a3 263 if (hack_defer_exploration && cold)
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264 sc->sc_bus->use_polling++;
265
b9bd1250 266 ue.u.ue_ctrlr.ue_bus = device_get_unit(self);
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267 usb_add_event(USB_EVENT_CTRLR_ATTACH, &ue);
268
269#ifdef USB_USE_SOFTINTR
936f1896 270 callout_init(&sc->sc_bus->softi);
1550dfd9 271#endif
1550dfd9 272
b9bd1250 273 err = usbd_new_device(self, sc->sc_bus, 0, speed, 0,
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274 &sc->sc_port);
275 if (!err) {
276 dev = sc->sc_port.device;
277 if (dev->hub == NULL) {
278 sc->sc_dying = 1;
b9bd1250 279 device_printf(self,
720b8fbe 280 "root device is not a hub\n");
e785a5d9 281 return ENXIO;
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282 }
283 sc->sc_bus->root_hub = dev;
284#if 1
1550dfd9 285 /*
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286 * Turning this code off will delay attachment of USB devices
287 * until the USB event thread is running, which means that
288 * the keyboard will not work until after cold boot.
289 */
281cf3c2 290 if (cold) {
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291 if (hack_defer_exploration) {
292 /* Explore high-speed busses before others. */
293 if (speed == USB_SPEED_HIGH)
294 dev->hub->explore(sc->sc_bus->root_hub);
295 else
296 TAILQ_INSERT_TAIL(&usb_coldexplist, sc,
297 sc_coldexplist);
298 } else {
299 /*
300 * XXX Exploring high speed devices here will
301 * hang the system.
302 */
303 if (speed != USB_SPEED_HIGH)
304 dev->hub->explore(sc->sc_bus->root_hub);
305 }
281cf3c2 306 }
281cf3c2 307#endif
984263bc 308 } else {
b9bd1250 309 device_printf(self,
720b8fbe 310 "root hub problem, error=%d\n", err);
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311 sc->sc_dying = 1;
312 }
eabfb7a3 313 if (hack_defer_exploration && cold)
1550dfd9 314 sc->sc_bus->use_polling--;
984263bc 315
b9bd1250 316 usb_create_event_thread(self);
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317
318 /*
319 * The per controller devices (used for usb_discover)
320 * XXX This is redundant now, but old usbd's will want it
321 */
281cf3c2
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322 tmp_dev = make_dev(&usb_ops, device_get_unit(self),
323 UID_ROOT, GID_OPERATOR, 0660,
324 "usb%d", device_get_unit(self));
325 sc->sc_usbdev = reference_dev(tmp_dev);
326 if (usb_ndevs++ == 0) {
984263bc 327 /* The device spitting out events */
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328 tmp_dev = make_dev(&usb_ops, USB_DEV_MINOR,
329 UID_ROOT, GID_OPERATOR, 0660, "usb");
330 usb_dev = reference_dev(tmp_dev);
984263bc 331 }
984263bc 332
e785a5d9 333 return 0;
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334}
335
6ed427ca 336static const char *taskq_names[] = USB_TASKQ_NAMES;
281cf3c2 337
984263bc 338void
b9bd1250 339usb_create_event_thread(device_t self)
984263bc 340{
b9bd1250 341 struct usb_softc *sc = device_get_softc(self);
281cf3c2 342 int i;
984263bc 343
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344 if (kthread_create(usb_event_thread, self, &sc->sc_event_thread,
345 "%s", device_get_nameunit(self))) {
346 device_printf(self,
720b8fbe 347 "unable to create event thread for\n");
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348 panic("usb_create_event_thread");
349 }
350
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351 for (i = 0; i < USB_NUM_TASKQS; i++) {
352 struct usb_taskq *taskq = &usb_taskq[i];
353
354 if (taskq->taskcreated == 0) {
355 taskq->taskcreated = 1;
356 taskq->name = taskq_names[i];
357 TAILQ_INIT(&taskq->tasks);
67743126 358 if (kthread_create(usb_task_thread, taskq,
281cf3c2 359 &taskq->task_thread_proc, taskq->name)) {
85f8e2ea 360 kprintf("unable to create task thread\n");
281cf3c2
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361 panic("usb_create_event_thread task");
362 }
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363 }
364 }
365}
366
367/*
368 * Add a task to be performed by the task thread. This function can be
369 * called from any context and the task will be executed in a process
370 * context ASAP.
371 */
372void
281cf3c2 373usb_add_task(usbd_device_handle dev, struct usb_task *task, int queue)
1550dfd9 374{
281cf3c2
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375 struct usb_taskq *taskq;
376
4e01b467 377 crit_enter();
281cf3c2
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378
379 taskq = &usb_taskq[queue];
380 if (task->queue == -1) {
1550dfd9 381 DPRINTFN(2,("usb_add_task: task=%p\n", task));
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382 TAILQ_INSERT_TAIL(&taskq->tasks, task, next);
383 task->queue = queue;
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384 } else {
385 DPRINTFN(3,("usb_add_task: task=%p on q\n", task));
386 }
1ea0c479 387 wakeup(&taskq->tasks);
281cf3c2
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388
389 crit_exit();
390}
391
392void
393usb_do_task(usbd_device_handle dev, struct usb_task *task, int queue,
394 int time_out)
395{
396 struct usb_taskq *taskq;
397
398 crit_enter();
399
400 taskq = &usb_taskq[queue];
401 if (task->queue == -1) {
402 DPRINTFN(2,("usb_add_task: task=%p\n", task));
403 TAILQ_INSERT_TAIL(&taskq->tasks, task, next);
404 task->queue = queue;
405 } else {
406 DPRINTFN(3,("usb_add_task: task=%p on q\n", task));
407 }
1ea0c479 408 wakeup(&taskq->tasks);
281cf3c2 409
1ea0c479
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410 /* Wait until task is finished */
411 tsleep((&taskq->tasks + 1), 0, "usbdotsk", time_out);
281cf3c2 412
4e01b467 413 crit_exit();
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414}
415
416void
417usb_rem_task(usbd_device_handle dev, struct usb_task *task)
418{
4e01b467 419 crit_enter();
281cf3c2
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420 if (task->queue != -1) {
421 TAILQ_REMOVE(&usb_taskq[task->queue].tasks, task, next);
422 task->queue = -1;
1550dfd9 423 }
4e01b467 424 crit_exit();
984263bc
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425}
426
427void
428usb_event_thread(void *arg)
429{
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430 device_t self = arg;
431 struct usb_softc *sc = device_get_softc(self);
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432
433 DPRINTF(("usb_event_thread: start\n"));
434
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435 /*
436 * In case this controller is a companion controller to an
437 * EHCI controller we need to wait until the EHCI controller
438 * has grabbed the port.
439 * XXX It would be nicer to do this with a tsleep(), but I don't
440 * know how to synchronize the creation of the threads so it
441 * will work.
442 */
443 usb_delay_ms(sc->sc_bus, 500);
444
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445 crit_enter();
446
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447 /* Make sure first discover does something. */
448 sc->sc_bus->needs_explore = 1;
b9bd1250 449 usb_discover(self);
1550dfd9 450
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451 while (!sc->sc_dying) {
452#ifdef USB_DEBUG
453 if (usb_noexplore < 2)
454#endif
b9bd1250 455 usb_discover(self);
984263bc 456#ifdef USB_DEBUG
0e224b5d
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457 tsleep(&sc->sc_bus->needs_explore, 0, "usbevt",
458 usb_noexplore ? 0 : hz * 60);
1550dfd9 459#else
0e224b5d 460 tsleep(&sc->sc_bus->needs_explore, 0, "usbevt", hz * 60);
984263bc 461#endif
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MD
462 DPRINTFN(2,("usb_event_thread: woke up\n"));
463 }
1550dfd9 464 sc->sc_event_thread = NULL;
984263bc 465
281cf3c2
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466 crit_exit();
467
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468 /* In case parent is waiting for us to exit. */
469 wakeup(sc);
470
471 DPRINTF(("usb_event_thread: exit\n"));
0cfcada1 472 kthread_exit();
984263bc
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473}
474
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475void
476usb_task_thread(void *arg)
477{
478 struct usb_task *task;
281cf3c2 479 struct usb_taskq *taskq;
1550dfd9 480
4e01b467 481 crit_enter();
281cf3c2
SZ
482
483 taskq = arg;
484 DPRINTF(("usb_task_thread: start taskq %s\n", taskq->name));
485
623c4956 486 while (usb_ndevs > 0) {
1ea0c479
SZ
487 task = TAILQ_FIRST(&taskq->tasks);
488 if (task == NULL) {
281cf3c2 489 tsleep(&taskq->tasks, 0, "usbtsk", 0);
1ea0c479 490 task = TAILQ_FIRST(&taskq->tasks);
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491 }
492 DPRINTFN(2,("usb_task_thread: woke up task=%p\n", task));
1ea0c479
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493 if (task != NULL) {
494 TAILQ_REMOVE(&taskq->tasks, task, next);
495 task->queue = -1;
496 crit_exit();
497 task->fun(task->arg);
498 crit_enter();
499 wakeup((&taskq->tasks + 1));
500 }
1550dfd9 501 }
281cf3c2
SZ
502
503 crit_exit();
504
505 taskq->taskcreated = 0;
506 wakeup(&taskq->taskcreated);
507
508 DPRINTF(("usb_event_thread: exit\n"));
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MD
509}
510
984263bc 511int
fef8985e 512usbopen(struct dev_open_args *ap)
984263bc 513{
b13267a5 514 cdev_t dev = ap->a_head.a_dev;
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515 int unit = USBUNIT(dev);
516 struct usb_softc *sc;
517
518 if (unit == USB_DEV_MINOR) {
519 if (usb_dev_open)
520 return (EBUSY);
521 usb_dev_open = 1;
41c20dac 522 usb_async_proc = NULL;
984263bc 523 return (0);
1550dfd9 524 }
984263bc 525
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HT
526 sc = devclass_get_softc(usb_devclass, unit);
527 if (sc == NULL)
528 return (ENXIO);
984263bc 529
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530 if (sc->sc_dying)
531 return (EIO);
532
533 return (0);
984263bc
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534}
535
536int
fef8985e 537usbread(struct dev_read_args *ap)
984263bc 538{
b13267a5 539 cdev_t dev = ap->a_head.a_dev;
fef8985e 540 struct uio *uio = ap->a_uio;
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541 struct usb_event ue;
542 int unit = USBUNIT(dev);
4e01b467 543 int error, n;
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MD
544
545 if (unit != USB_DEV_MINOR)
546 return (ENODEV);
547
548 if (uio->uio_resid != sizeof(struct usb_event))
549 return (EINVAL);
550
551 error = 0;
4e01b467 552 crit_enter();
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MD
553 for (;;) {
554 n = usb_get_next_event(&ue);
555 if (n != 0)
556 break;
fef8985e 557 if (ap->a_ioflag & IO_NDELAY) {
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558 error = EWOULDBLOCK;
559 break;
560 }
377d4740 561 error = tsleep(&usb_events, PCATCH, "usbrea", 0);
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562 if (error)
563 break;
564 }
4e01b467 565 crit_exit();
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566 if (!error)
567 error = uiomove((void *)&ue, uio->uio_resid, uio);
568
569 return (error);
570}
571
572int
fef8985e 573usbclose(struct dev_close_args *ap)
984263bc 574{
b13267a5 575 cdev_t dev = ap->a_head.a_dev;
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576 int unit = USBUNIT(dev);
577
578 if (unit == USB_DEV_MINOR) {
41c20dac 579 usb_async_proc = NULL;
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580 usb_dev_open = 0;
581 }
582
583 return (0);
584}
585
586int
fef8985e 587usbioctl(struct dev_ioctl_args *ap)
984263bc 588{
b13267a5 589 cdev_t devt = ap->a_head.a_dev;
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590 struct usb_softc *sc;
591 int unit = USBUNIT(devt);
592
593 if (unit == USB_DEV_MINOR) {
fef8985e 594 switch (ap->a_cmd) {
984263bc 595 case FIOASYNC:
fef8985e 596 if (*(int *)ap->a_data)
fef8985e 597 usb_async_proc = curproc;
984263bc 598 else
41c20dac 599 usb_async_proc = NULL;
984263bc
MD
600 return (0);
601
602 default:
603 return (EINVAL);
604 }
605 }
606
1e089e7e 607 sc = devclass_get_softc(usb_devclass, unit);
984263bc
MD
608
609 if (sc->sc_dying)
610 return (EIO);
611
fef8985e 612 switch (ap->a_cmd) {
1550dfd9 613 /* This part should be deleted */
984263bc 614 case USB_DISCOVER:
984263bc 615 break;
984263bc
MD
616 case USB_REQUEST:
617 {
fef8985e 618 struct usb_ctl_request *ur = (void *)ap->a_data;
984263bc
MD
619 int len = UGETW(ur->ucr_request.wLength);
620 struct iovec iov;
621 struct uio uio;
622 void *ptr = 0;
623 int addr = ur->ucr_addr;
624 usbd_status err;
625 int error = 0;
626
627 DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len));
628 if (len < 0 || len > 32768)
629 return (EINVAL);
1550dfd9 630 if (addr < 0 || addr >= USB_MAX_DEVICES ||
984263bc
MD
631 sc->sc_bus->devices[addr] == 0)
632 return (EINVAL);
633 if (len != 0) {
634 iov.iov_base = (caddr_t)ur->ucr_data;
635 iov.iov_len = len;
636 uio.uio_iov = &iov;
637 uio.uio_iovcnt = 1;
638 uio.uio_resid = len;
639 uio.uio_offset = 0;
640 uio.uio_segflg = UIO_USERSPACE;
641 uio.uio_rw =
1550dfd9 642 ur->ucr_request.bmRequestType & UT_READ ?
984263bc 643 UIO_READ : UIO_WRITE;
fef8985e 644 uio.uio_td = curthread;
efda3bd0 645 ptr = kmalloc(len, M_TEMP, M_WAITOK);
984263bc
MD
646 if (uio.uio_rw == UIO_WRITE) {
647 error = uiomove(ptr, len, &uio);
648 if (error)
649 goto ret;
650 }
651 }
652 err = usbd_do_request_flags(sc->sc_bus->devices[addr],
1550dfd9
MD
653 &ur->ucr_request, ptr, ur->ucr_flags, &ur->ucr_actlen,
654 USBD_DEFAULT_TIMEOUT);
984263bc
MD
655 if (err) {
656 error = EIO;
657 goto ret;
658 }
659 if (len != 0) {
660 if (uio.uio_rw == UIO_READ) {
661 error = uiomove(ptr, len, &uio);
662 if (error)
663 goto ret;
664 }
665 }
666 ret:
667 if (ptr)
efda3bd0 668 kfree(ptr, M_TEMP);
984263bc
MD
669 return (error);
670 }
671
672 case USB_DEVICEINFO:
673 {
fef8985e 674 struct usb_device_info *di = (void *)ap->a_data;
984263bc
MD
675 int addr = di->udi_addr;
676 usbd_device_handle dev;
677
678 if (addr < 1 || addr >= USB_MAX_DEVICES)
679 return (EINVAL);
680 dev = sc->sc_bus->devices[addr];
1550dfd9 681 if (dev == NULL)
984263bc 682 return (ENXIO);
1550dfd9 683 usbd_fill_deviceinfo(dev, di, 1);
984263bc
MD
684 break;
685 }
686
687 case USB_DEVICESTATS:
fef8985e 688 *(struct usb_device_stats *)ap->a_data = sc->sc_bus->stats;
984263bc
MD
689 break;
690
691 default:
692 return (EINVAL);
693 }
694 return (0);
695}
696
697int
fef8985e 698usbpoll(struct dev_poll_args *ap)
984263bc 699{
b13267a5 700 cdev_t dev = ap->a_head.a_dev;
4e01b467 701 int revents, mask;
984263bc
MD
702 int unit = USBUNIT(dev);
703
704 if (unit == USB_DEV_MINOR) {
705 revents = 0;
706 mask = POLLIN | POLLRDNORM;
707
4e01b467 708 crit_enter();
fef8985e
MD
709 if (ap->a_events & mask && usb_nevents > 0)
710 revents |= ap->a_events & mask;
711 if (revents == 0 && ap->a_events & mask)
712 selrecord(curthread, &usb_selevent);
4e01b467 713 crit_exit();
fef8985e
MD
714 ap->a_events = revents;
715 return (0);
984263bc 716 } else {
fef8985e 717 ap->a_events = 0;
1550dfd9 718 return (0); /* select/poll never wakes up - back compat */
984263bc
MD
719 }
720}
721
722/* Explore device tree from the root. */
6ed427ca 723static void
b9bd1250 724usb_discover(device_t self)
984263bc 725{
b9bd1250 726 struct usb_softc *sc = device_get_softc(self);
1550dfd9 727
1550dfd9
MD
728 DPRINTFN(2,("usb_discover\n"));
729#ifdef USB_DEBUG
730 if (usb_noexplore > 1)
731 return;
732#endif
733
734 /*
984263bc
MD
735 * We need mutual exclusion while traversing the device tree,
736 * but this is guaranteed since this function is only called
737 * from the event thread for the controller.
738 */
4e01b467 739 crit_enter();
984263bc
MD
740 while (sc->sc_bus->needs_explore && !sc->sc_dying) {
741 sc->sc_bus->needs_explore = 0;
281cf3c2 742
4e01b467 743 crit_exit();
984263bc 744 sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub);
4e01b467 745 crit_enter();
281cf3c2 746
984263bc 747 }
4e01b467 748 crit_exit();
984263bc
MD
749}
750
751void
1550dfd9 752usb_needs_explore(usbd_device_handle dev)
984263bc 753{
1550dfd9
MD
754 DPRINTFN(2,("usb_needs_explore\n"));
755 dev->bus->needs_explore = 1;
756 wakeup(&dev->bus->needs_explore);
984263bc
MD
757}
758
4e01b467 759/* Called from a critical section */
984263bc
MD
760int
761usb_get_next_event(struct usb_event *ue)
762{
763 struct usb_event_q *ueq;
764
765 if (usb_nevents <= 0)
766 return (0);
1550dfd9
MD
767 ueq = TAILQ_FIRST(&usb_events);
768#ifdef DIAGNOSTIC
769 if (ueq == NULL) {
85f8e2ea 770 kprintf("usb: usb_nevents got out of sync! %d\n", usb_nevents);
1550dfd9
MD
771 usb_nevents = 0;
772 return (0);
773 }
774#endif
7913af9e
MN
775 if (ue)
776 *ue = ueq->ue;
1550dfd9 777 TAILQ_REMOVE(&usb_events, ueq, next);
efda3bd0 778 kfree(ueq, M_USBDEV);
984263bc
MD
779 usb_nevents--;
780 return (1);
781}
782
783void
1550dfd9
MD
784usbd_add_dev_event(int type, usbd_device_handle udev)
785{
786 struct usb_event ue;
787
788 usbd_fill_deviceinfo(udev, &ue.u.ue_device, USB_EVENT_IS_ATTACH(type));
789 usb_add_event(type, &ue);
790}
791
792void
6ed427ca 793usbd_add_drv_event(int type, usbd_device_handle udev, device_t dev)
1550dfd9
MD
794{
795 struct usb_event ue;
796
797 ue.u.ue_driver.ue_cookie = udev->cookie;
6ed427ca 798 strncpy(ue.u.ue_driver.ue_devname, device_get_nameunit(dev),
1550dfd9
MD
799 sizeof ue.u.ue_driver.ue_devname);
800 usb_add_event(type, &ue);
801}
802
803void
804usb_add_event(int type, struct usb_event *uep)
984263bc
MD
805{
806 struct usb_event_q *ueq;
984263bc 807 struct timeval thetime;
984263bc 808
efda3bd0 809 ueq = kmalloc(sizeof *ueq, M_USBDEV, M_INTWAIT);
1550dfd9
MD
810 ueq->ue = *uep;
811 ueq->ue.ue_type = type;
812 microtime(&thetime);
813 TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time);
814
4e01b467 815 crit_enter();
1550dfd9
MD
816 if (USB_EVENT_IS_DETACH(type)) {
817 struct usb_event_q *ueqi, *ueqi_next;
818
819 for (ueqi = TAILQ_FIRST(&usb_events); ueqi; ueqi = ueqi_next) {
820 ueqi_next = TAILQ_NEXT(ueqi, next);
821 if (ueqi->ue.u.ue_driver.ue_cookie.cookie ==
822 uep->u.ue_device.udi_cookie.cookie) {
823 TAILQ_REMOVE(&usb_events, ueqi, next);
efda3bd0 824 kfree(ueqi, M_USBDEV);
1550dfd9
MD
825 usb_nevents--;
826 ueqi_next = TAILQ_FIRST(&usb_events);
827 }
828 }
829 }
830 if (usb_nevents >= USB_MAX_EVENTS) {
984263bc
MD
831 /* Too many queued events, drop an old one. */
832 DPRINTF(("usb: event dropped\n"));
7913af9e 833 usb_get_next_event(NULL);
984263bc 834 }
1550dfd9
MD
835 TAILQ_INSERT_TAIL(&usb_events, ueq, next);
836 usb_nevents++;
984263bc 837 wakeup(&usb_events);
375a9af6 838 selwakeup(&usb_selevent);
1550dfd9 839 if (usb_async_proc != NULL) {
84204577 840 ksignal(usb_async_proc, SIGIO);
1550dfd9 841 }
4e01b467 842 crit_exit();
984263bc
MD
843}
844
1550dfd9
MD
845void
846usb_schedsoftintr(usbd_bus_handle bus)
847{
848 DPRINTFN(10,("usb_schedsoftintr: polling=%d\n", bus->use_polling));
849#ifdef USB_USE_SOFTINTR
850 if (bus->use_polling) {
851 bus->methods->soft_intr(bus);
852 } else {
1550dfd9
MD
853 if (!callout_pending(&bus->softi))
854 callout_reset(&bus->softi, 0, bus->methods->soft_intr,
855 bus);
1550dfd9
MD
856 }
857#else
281cf3c2 858 bus->methods->soft_intr(bus);
1550dfd9
MD
859#endif /* USB_USE_SOFTINTR */
860}
861
e785a5d9
HT
862static int
863usb_detach(device_t self)
984263bc 864{
e785a5d9 865 struct usb_softc *sc = device_get_softc(self);
1550dfd9 866 struct usb_event ue;
984263bc
MD
867
868 DPRINTF(("usb_detach: start\n"));
869
870 sc->sc_dying = 1;
871
872 /* Make all devices disconnect. */
1550dfd9 873 if (sc->sc_port.device != NULL)
984263bc
MD
874 usb_disconnect_port(&sc->sc_port, self);
875
876 /* Kill off event thread. */
1550dfd9 877 if (sc->sc_event_thread != NULL) {
984263bc 878 wakeup(&sc->sc_bus->needs_explore);
377d4740 879 if (tsleep(sc, 0, "usbdet", hz * 60))
b9bd1250 880 device_printf(self,
720b8fbe 881 "event thread didn't die\n");
984263bc
MD
882 DPRINTF(("usb_detach: event thread dead\n"));
883 }
884
6e46c965 885 release_dev(sc->sc_usbdev);
6e46c965 886
281cf3c2
SZ
887 if (--usb_ndevs == 0) {
888 int i;
889
6e46c965 890 release_dev(usb_dev);
cd29885a 891 dev_ops_remove_minor(&usb_ops, USB_DEV_MINOR);
281cf3c2
SZ
892 usb_dev = NULL;
893
894 for (i = 0; i < USB_NUM_TASKQS; i++) {
895 struct usb_taskq *taskq = &usb_taskq[i];
896 wakeup(&taskq->tasks);
897 if (tsleep(&taskq->taskcreated, 0, "usbtdt",
898 hz * 60)) {
85f8e2ea 899 kprintf("usb task thread %s didn't die\n",
281cf3c2
SZ
900 taskq->name);
901 }
902 }
903 }
281cf3c2 904
984263bc 905 usbd_finish();
1550dfd9
MD
906
907#ifdef USB_USE_SOFTINTR
1550dfd9
MD
908 callout_stop(&sc->sc_bus->softi);
909#endif
1550dfd9 910
b9bd1250 911 ue.u.ue_ctrlr.ue_bus = device_get_unit(self);
1550dfd9
MD
912 usb_add_event(USB_EVENT_CTRLR_DETACH, &ue);
913
984263bc
MD
914 return (0);
915}
281cf3c2 916
6ed427ca 917static void
281cf3c2 918usb_child_detached(device_t self, device_t child)
984263bc 919{
281cf3c2 920 struct usb_softc *sc = device_get_softc(self);
984263bc 921
281cf3c2
SZ
922 /* XXX, should check it is the right device. */
923 sc->sc_port.device = NULL;
984263bc 924}
984263bc 925
5d0fb0e6
MN
926/* Explore USB busses at the end of device configuration */
927static void
928usb_cold_explore(void *arg)
929{
930 struct usb_softc *sc;
931
eabfb7a3
MN
932 TUNABLE_INT_FETCH("hw.usb.hack_defer_exploration",
933 &hack_defer_exploration);
934
935 if (!hack_defer_exploration)
936 return;
937
5d0fb0e6
MN
938 KASSERT(cold || TAILQ_EMPTY(&usb_coldexplist),
939 ("usb_cold_explore: busses to explore when !cold"));
940 while (!TAILQ_EMPTY(&usb_coldexplist)) {
941 sc = TAILQ_FIRST(&usb_coldexplist);
942 TAILQ_REMOVE(&usb_coldexplist, sc, sc_coldexplist);
943
944 sc->sc_bus->use_polling++;
945 sc->sc_port.device->hub->explore(sc->sc_bus->root_hub);
946 sc->sc_bus->use_polling--;
947 }
948}
949
63bf4253
MD
950struct usbd_bus *
951usb_getbushandle(struct usb_softc *sc)
952{
953 return (sc->sc_bus);
954}
955
956
5d0fb0e6
MN
957SYSINIT(usb_cold_explore, SI_SUB_CONFIGURE, SI_ORDER_MIDDLE,
958 usb_cold_explore, NULL);
959
984263bc
MD
960DRIVER_MODULE(usb, ohci, usb_driver, usb_devclass, 0, 0);
961DRIVER_MODULE(usb, uhci, usb_driver, usb_devclass, 0, 0);
1550dfd9 962DRIVER_MODULE(usb, ehci, usb_driver, usb_devclass, 0, 0);