USB - Add support for xfer-restart-before-callback
[dragonfly.git] / sys / bus / usb / usbdi.c
CommitLineData
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1/* $NetBSD: usbdi.c,v 1.106 2004/10/24 12:52:40 augustss Exp $ */
2/* $FreeBSD: src/sys/dev/usb/usbdi.c,v 1.91.2.1 2005/12/15 00:36:00 iedowse Exp $ */
936f1896 3/* $DragonFly: src/sys/bus/usb/usbdi.c,v 1.18 2007/06/29 22:56:31 hasso Exp $ */
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4
5/*
6 * Copyright (c) 1998 The NetBSD Foundation, Inc.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Lennart Augustsson (lennart@augustsson.net) at
11 * Carlstedt Research & Technology.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. All advertising materials mentioning features or use of this software
22 * must display the following acknowledgement:
23 * This product includes software developed by the NetBSD
24 * Foundation, Inc. and its contributors.
25 * 4. Neither the name of The NetBSD Foundation nor the names of its
26 * contributors may be used to endorse or promote products derived
27 * from this software without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
30 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
31 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
32 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
33 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
36 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
37 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39 * POSSIBILITY OF SUCH DAMAGE.
40 */
41
42#include <sys/param.h>
43#include <sys/systm.h>
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44#include <sys/module.h>
45#include <sys/bus.h>
46#include "usb_if.h"
47#if defined(DIAGNOSTIC) && defined(__i386__)
48#include <machine/cpu.h>
49#endif
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50#include <sys/malloc.h>
51#include <sys/proc.h>
4e01b467 52#include <sys/thread2.h>
984263bc 53
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54#include <bus/usb/usb.h>
55#include <bus/usb/usbdi.h>
56#include <bus/usb/usbdi_util.h>
57#include <bus/usb/usbdivar.h>
58#include <bus/usb/usb_mem.h>
59#include <bus/usb/usb_quirks.h>
984263bc 60
984263bc 61#define delay(d) DELAY(d)
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62
63#ifdef USB_DEBUG
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64#define DPRINTF(x) if (usbdebug) kprintf x
65#define DPRINTFN(n,x) if (usbdebug>(n)) kprintf x
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66extern int usbdebug;
67#else
68#define DPRINTF(x)
69#define DPRINTFN(n,x)
70#endif
71
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72static usbd_status usbd_ar_pipe(usbd_pipe_handle pipe);
73static void usbd_do_request_async_cb
1550dfd9 74 (usbd_xfer_handle, usbd_private_handle, usbd_status);
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75static void usbd_start_next(usbd_pipe_handle pipe);
76static usbd_status usbd_open_pipe_ival
1550dfd9 77 (usbd_interface_handle, u_int8_t, u_int8_t, usbd_pipe_handle *, int);
6ed427ca 78static int usbd_xfer_isread(usbd_xfer_handle xfer);
984263bc 79
6ed427ca 80static int usbd_nbuses = 0;
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81
82void
83usbd_init(void)
84{
85 usbd_nbuses++;
86}
87
88void
89usbd_finish(void)
90{
91 --usbd_nbuses;
92}
93
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94static __inline int
95usbd_xfer_isread(usbd_xfer_handle xfer)
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96{
97 if (xfer->rqflags & URQ_REQUEST)
98 return (xfer->request.bmRequestType & UT_READ);
99 else
100 return (xfer->pipe->endpoint->edesc->bEndpointAddress &
101 UE_DIR_IN);
102}
103
104#ifdef USB_DEBUG
105void
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106usbd_dump_iface(struct usbd_interface *iface)
107{
85f8e2ea 108 kprintf("usbd_dump_iface: iface=%p\n", iface);
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109 if (iface == NULL)
110 return;
85f8e2ea 111 kprintf(" device=%p idesc=%p index=%d altindex=%d priv=%p\n",
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112 iface->device, iface->idesc, iface->index, iface->altindex,
113 iface->priv);
114}
115
116void
117usbd_dump_device(struct usbd_device *dev)
118{
85f8e2ea 119 kprintf("usbd_dump_device: dev=%p\n", dev);
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120 if (dev == NULL)
121 return;
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122 kprintf(" bus=%p default_pipe=%p\n", dev->bus, dev->default_pipe);
123 kprintf(" address=%d config=%d depth=%d speed=%d self_powered=%d "
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124 "power=%d langid=%d\n",
125 dev->address, dev->config, dev->depth, dev->speed,
126 dev->self_powered, dev->power, dev->langid);
127}
128
129void
130usbd_dump_endpoint(struct usbd_endpoint *endp)
131{
85f8e2ea 132 kprintf("usbd_dump_endpoint: endp=%p\n", endp);
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133 if (endp == NULL)
134 return;
85f8e2ea 135 kprintf(" edesc=%p refcnt=%d\n", endp->edesc, endp->refcnt);
1550dfd9 136 if (endp->edesc)
85f8e2ea 137 kprintf(" bEndpointAddress=0x%02x\n",
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138 endp->edesc->bEndpointAddress);
139}
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140
141void
142usbd_dump_queue(usbd_pipe_handle pipe)
143{
144 usbd_xfer_handle xfer;
145
85f8e2ea 146 kprintf("usbd_dump_queue: pipe=%p\n", pipe);
fc1ef497 147 STAILQ_FOREACH(xfer, &pipe->queue, next) {
85f8e2ea 148 kprintf(" xfer=%p\n", xfer);
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149 }
150}
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151
152void
153usbd_dump_pipe(usbd_pipe_handle pipe)
154{
85f8e2ea 155 kprintf("usbd_dump_pipe: pipe=%p\n", pipe);
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156 if (pipe == NULL)
157 return;
158 usbd_dump_iface(pipe->iface);
159 usbd_dump_device(pipe->device);
160 usbd_dump_endpoint(pipe->endpoint);
85f8e2ea 161 kprintf(" (usbd_dump_pipe:)\n refcnt=%d running=%d aborting=%d\n",
1550dfd9 162 pipe->refcnt, pipe->running, pipe->aborting);
85f8e2ea 163 kprintf(" intrxfer=%p, repeat=%d, interval=%d\n",
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164 pipe->intrxfer, pipe->repeat, pipe->interval);
165}
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166#endif
167
1550dfd9 168usbd_status
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169usbd_open_pipe(usbd_interface_handle iface, u_int8_t address,
170 u_int8_t flags, usbd_pipe_handle *pipe)
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171{
172 return (usbd_open_pipe_ival(iface, address, flags, pipe,
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173 USBD_DEFAULT_INTERVAL));
174}
175
1550dfd9 176usbd_status
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177usbd_open_pipe_ival(usbd_interface_handle iface, u_int8_t address,
178 u_int8_t flags, usbd_pipe_handle *pipe, int ival)
1550dfd9 179{
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180 usbd_pipe_handle p;
181 struct usbd_endpoint *ep;
182 usbd_status err;
183 int i;
184
185 DPRINTFN(3,("usbd_open_pipe: iface=%p address=0x%x flags=0x%x\n",
186 iface, address, flags));
187
188 for (i = 0; i < iface->idesc->bNumEndpoints; i++) {
189 ep = &iface->endpoints[i];
190 if (ep->edesc == NULL)
191 return (USBD_IOERROR);
192 if (ep->edesc->bEndpointAddress == address)
193 goto found;
194 }
195 return (USBD_BAD_ADDRESS);
196 found:
197 if ((flags & USBD_EXCLUSIVE_USE) && ep->refcnt != 0)
198 return (USBD_IN_USE);
199 err = usbd_setup_pipe(iface->device, iface, ep, ival, &p);
200 if (err)
201 return (err);
202 LIST_INSERT_HEAD(&iface->pipes, p, next);
203 *pipe = p;
204 return (USBD_NORMAL_COMPLETION);
205}
206
1550dfd9 207usbd_status
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208usbd_open_pipe_intr(usbd_interface_handle iface, u_int8_t address,
209 u_int8_t flags, usbd_pipe_handle *pipe,
210 usbd_private_handle priv, void *buffer, u_int32_t len,
211 usbd_callback cb, int ival)
212{
213 usbd_status err;
214 usbd_xfer_handle xfer;
215 usbd_pipe_handle ipipe;
216
217 DPRINTFN(3,("usbd_open_pipe_intr: address=0x%x flags=0x%x len=%d\n",
218 address, flags, len));
219
1550dfd9 220 err = usbd_open_pipe_ival(iface, address, USBD_EXCLUSIVE_USE,
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221 &ipipe, ival);
222 if (err)
223 return (err);
224 xfer = usbd_alloc_xfer(iface->device);
225 if (xfer == NULL) {
226 err = USBD_NOMEM;
227 goto bad1;
228 }
229 usbd_setup_xfer(xfer, ipipe, priv, buffer, len, flags,
230 USBD_NO_TIMEOUT, cb);
231 ipipe->intrxfer = xfer;
232 ipipe->repeat = 1;
233 err = usbd_transfer(xfer);
234 *pipe = ipipe;
281cf3c2 235 if (err != USBD_IN_PROGRESS && err)
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236 goto bad2;
237 return (USBD_NORMAL_COMPLETION);
238
239 bad2:
240 ipipe->intrxfer = NULL;
241 ipipe->repeat = 0;
242 usbd_free_xfer(xfer);
243 bad1:
244 usbd_close_pipe(ipipe);
245 return (err);
246}
247
248usbd_status
249usbd_close_pipe(usbd_pipe_handle pipe)
250{
251#ifdef DIAGNOSTIC
252 if (pipe == NULL) {
85f8e2ea 253 kprintf("usbd_close_pipe: pipe==NULL\n");
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254 return (USBD_NORMAL_COMPLETION);
255 }
256#endif
257
258 if (--pipe->refcnt != 0)
259 return (USBD_NORMAL_COMPLETION);
fc1ef497 260 if (! STAILQ_EMPTY(&pipe->queue))
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261 return (USBD_PENDING_REQUESTS);
262 LIST_REMOVE(pipe, next);
263 pipe->endpoint->refcnt--;
264 pipe->methods->close(pipe);
265 if (pipe->intrxfer != NULL)
266 usbd_free_xfer(pipe->intrxfer);
efda3bd0 267 kfree(pipe, M_USB);
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268 return (USBD_NORMAL_COMPLETION);
269}
270
271usbd_status
272usbd_transfer(usbd_xfer_handle xfer)
273{
274 usbd_pipe_handle pipe = xfer->pipe;
275 usb_dma_t *dmap = &xfer->dmabuf;
276 usbd_status err;
277 u_int size;
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278
279 DPRINTFN(5,("usbd_transfer: xfer=%p, flags=%d, pipe=%p, running=%d\n",
280 xfer, xfer->flags, pipe, pipe->running));
281#ifdef USB_DEBUG
282 if (usbdebug > 5)
283 usbd_dump_queue(pipe);
284#endif
285 xfer->done = 0;
286
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287 if (pipe->aborting)
288 return (USBD_CANCELLED);
289
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290 size = xfer->length;
291 /* If there is no buffer, allocate one. */
292 if (!(xfer->rqflags & URQ_DEV_DMABUF) && size != 0) {
293 struct usbd_bus *bus = pipe->device->bus;
294
295#ifdef DIAGNOSTIC
296 if (xfer->rqflags & URQ_AUTO_DMABUF)
85f8e2ea 297 kprintf("usbd_transfer: has old buffer!\n");
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298#endif
299 err = bus->methods->allocm(bus, dmap, size);
300 if (err)
301 return (err);
302 xfer->rqflags |= URQ_AUTO_DMABUF;
303 }
304
305 /* Copy data if going out. */
1550dfd9 306 if (!(xfer->flags & USBD_NO_COPY) && size != 0 &&
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307 !usbd_xfer_isread(xfer))
308 memcpy(KERNADDR(dmap, 0), xfer->buffer, size);
309
310 err = pipe->methods->transfer(xfer);
311
312 if (err != USBD_IN_PROGRESS && err) {
313 /* The transfer has not been queued, so free buffer. */
314 if (xfer->rqflags & URQ_AUTO_DMABUF) {
315 struct usbd_bus *bus = pipe->device->bus;
316
317 bus->methods->freem(bus, &xfer->dmabuf);
318 xfer->rqflags &= ~URQ_AUTO_DMABUF;
319 }
320 }
321
322 if (!(xfer->flags & USBD_SYNCHRONOUS))
323 return (err);
324
325 /* Sync transfer, wait for completion. */
326 if (err != USBD_IN_PROGRESS)
327 return (err);
4e01b467 328 crit_enter();
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329 if (!xfer->done) {
330 if (pipe->device->bus->use_polling)
281cf3c2 331 panic("usbd_transfer: not done");
1550dfd9 332 tsleep(xfer, 0, "usbsyn", 0);
984263bc 333 }
4e01b467 334 crit_exit();
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335 return (xfer->status);
336}
337
338/* Like usbd_transfer(), but waits for completion. */
339usbd_status
340usbd_sync_transfer(usbd_xfer_handle xfer)
341{
342 xfer->flags |= USBD_SYNCHRONOUS;
343 return (usbd_transfer(xfer));
344}
345
346void *
347usbd_alloc_buffer(usbd_xfer_handle xfer, u_int32_t size)
348{
349 struct usbd_bus *bus = xfer->device->bus;
350 usbd_status err;
351
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352#ifdef DIAGNOSTIC
353 if (xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))
85f8e2ea 354 kprintf("usbd_alloc_buffer: xfer already has a buffer\n");
1550dfd9 355#endif
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356 err = bus->methods->allocm(bus, &xfer->dmabuf, size);
357 if (err)
1550dfd9 358 return (NULL);
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359 xfer->rqflags |= URQ_DEV_DMABUF;
360 return (KERNADDR(&xfer->dmabuf, 0));
361}
362
363void
364usbd_free_buffer(usbd_xfer_handle xfer)
365{
366#ifdef DIAGNOSTIC
367 if (!(xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))) {
85f8e2ea 368 kprintf("usbd_free_buffer: no buffer\n");
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369 return;
370 }
371#endif
372 xfer->rqflags &= ~(URQ_DEV_DMABUF | URQ_AUTO_DMABUF);
373 xfer->device->bus->methods->freem(xfer->device->bus, &xfer->dmabuf);
374}
375
376void *
377usbd_get_buffer(usbd_xfer_handle xfer)
378{
379 if (!(xfer->rqflags & URQ_DEV_DMABUF))
380 return (0);
381 return (KERNADDR(&xfer->dmabuf, 0));
382}
383
1550dfd9 384usbd_xfer_handle
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385usbd_alloc_xfer(usbd_device_handle dev)
386{
387 usbd_xfer_handle xfer;
388
389 xfer = dev->bus->methods->allocx(dev->bus);
390 if (xfer == NULL)
391 return (NULL);
392 xfer->device = dev;
936f1896 393 callout_init(&xfer->timeout_handle);
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394 DPRINTFN(5,("usbd_alloc_xfer() = %p\n", xfer));
395 return (xfer);
396}
397
1550dfd9 398usbd_status
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399usbd_free_xfer(usbd_xfer_handle xfer)
400{
401 DPRINTFN(5,("usbd_free_xfer: %p\n", xfer));
402 if (xfer->rqflags & (URQ_DEV_DMABUF | URQ_AUTO_DMABUF))
403 usbd_free_buffer(xfer);
404 xfer->device->bus->methods->freex(xfer->device->bus, xfer);
405 return (USBD_NORMAL_COMPLETION);
406}
407
408void
409usbd_setup_xfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe,
410 usbd_private_handle priv, void *buffer, u_int32_t length,
411 u_int16_t flags, u_int32_t timeout,
412 usbd_callback callback)
413{
414 xfer->pipe = pipe;
415 xfer->priv = priv;
416 xfer->buffer = buffer;
417 xfer->length = length;
418 xfer->actlen = 0;
419 xfer->flags = flags;
420 xfer->timeout = timeout;
421 xfer->status = USBD_NOT_STARTED;
422 xfer->callback = callback;
423 xfer->rqflags &= ~URQ_REQUEST;
424 xfer->nframes = 0;
425}
426
427void
428usbd_setup_default_xfer(usbd_xfer_handle xfer, usbd_device_handle dev,
429 usbd_private_handle priv, u_int32_t timeout,
430 usb_device_request_t *req, void *buffer,
431 u_int32_t length, u_int16_t flags,
432 usbd_callback callback)
433{
434 xfer->pipe = dev->default_pipe;
435 xfer->priv = priv;
436 xfer->buffer = buffer;
437 xfer->length = length;
438 xfer->actlen = 0;
439 xfer->flags = flags;
440 xfer->timeout = timeout;
441 xfer->status = USBD_NOT_STARTED;
442 xfer->callback = callback;
443 xfer->request = *req;
444 xfer->rqflags |= URQ_REQUEST;
445 xfer->nframes = 0;
446}
447
448void
449usbd_setup_isoc_xfer(usbd_xfer_handle xfer, usbd_pipe_handle pipe,
450 usbd_private_handle priv, u_int16_t *frlengths,
451 u_int32_t nframes, u_int16_t flags, usbd_callback callback)
452{
453 xfer->pipe = pipe;
454 xfer->priv = priv;
455 xfer->buffer = 0;
456 xfer->length = 0;
457 xfer->actlen = 0;
458 xfer->flags = flags;
459 xfer->timeout = USBD_NO_TIMEOUT;
460 xfer->status = USBD_NOT_STARTED;
461 xfer->callback = callback;
462 xfer->rqflags &= ~URQ_REQUEST;
463 xfer->frlengths = frlengths;
464 xfer->nframes = nframes;
465}
466
467void
468usbd_get_xfer_status(usbd_xfer_handle xfer, usbd_private_handle *priv,
469 void **buffer, u_int32_t *count, usbd_status *status)
470{
471 if (priv != NULL)
472 *priv = xfer->priv;
473 if (buffer != NULL)
474 *buffer = xfer->buffer;
475 if (count != NULL)
476 *count = xfer->actlen;
477 if (status != NULL)
478 *status = xfer->status;
479}
480
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481int
482usbd_get_speed(usbd_device_handle dev)
483{
484 return(dev->speed);
485}
486
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487usb_config_descriptor_t *
488usbd_get_config_descriptor(usbd_device_handle dev)
489{
490#ifdef DIAGNOSTIC
491 if (dev == NULL) {
85f8e2ea 492 kprintf("usbd_get_config_descriptor: dev == NULL\n");
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493 return (NULL);
494 }
495#endif
496 return (dev->cdesc);
497}
498
499usb_interface_descriptor_t *
500usbd_get_interface_descriptor(usbd_interface_handle iface)
501{
502#ifdef DIAGNOSTIC
503 if (iface == NULL) {
85f8e2ea 504 kprintf("usbd_get_interface_descriptor: dev == NULL\n");
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505 return (NULL);
506 }
507#endif
508 return (iface->idesc);
509}
510
511usb_device_descriptor_t *
512usbd_get_device_descriptor(usbd_device_handle dev)
513{
514 return (&dev->ddesc);
515}
516
517usb_endpoint_descriptor_t *
518usbd_interface2endpoint_descriptor(usbd_interface_handle iface, u_int8_t index)
519{
520 if (index >= iface->idesc->bNumEndpoints)
521 return (0);
522 return (iface->endpoints[index].edesc);
523}
524
1550dfd9 525usbd_status
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526usbd_abort_pipe(usbd_pipe_handle pipe)
527{
528 usbd_status err;
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529
530#ifdef DIAGNOSTIC
531 if (pipe == NULL) {
85f8e2ea 532 kprintf("usbd_close_pipe: pipe==NULL\n");
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533 return (USBD_NORMAL_COMPLETION);
534 }
535#endif
4e01b467 536 crit_enter();
984263bc 537 err = usbd_ar_pipe(pipe);
4e01b467 538 crit_exit();
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539 return (err);
540}
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541
542usbd_status
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543usbd_abort_default_pipe(usbd_device_handle dev)
544{
545 return (usbd_abort_pipe(dev->default_pipe));
546}
547
548usbd_status
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549usbd_clear_endpoint_stall(usbd_pipe_handle pipe)
550{
551 usbd_device_handle dev = pipe->device;
552 usb_device_request_t req;
553 usbd_status err;
554
555 DPRINTFN(8, ("usbd_clear_endpoint_stall\n"));
556
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557 /*
558 * Clearing en endpoint stall resets the endpoint toggle, so
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559 * do the same to the HC toggle.
560 */
561 pipe->methods->cleartoggle(pipe);
562
563 req.bmRequestType = UT_WRITE_ENDPOINT;
564 req.bRequest = UR_CLEAR_FEATURE;
565 USETW(req.wValue, UF_ENDPOINT_HALT);
566 USETW(req.wIndex, pipe->endpoint->edesc->bEndpointAddress);
567 USETW(req.wLength, 0);
568 err = usbd_do_request(dev, &req, 0);
569#if 0
570XXX should we do this?
571 if (!err) {
572 pipe->state = USBD_PIPE_ACTIVE;
573 /* XXX activate pipe */
574 }
575#endif
576 return (err);
577}
578
1550dfd9 579usbd_status
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580usbd_clear_endpoint_stall_async(usbd_pipe_handle pipe)
581{
582 usbd_device_handle dev = pipe->device;
583 usb_device_request_t req;
584 usbd_status err;
585
586 pipe->methods->cleartoggle(pipe);
587
588 req.bmRequestType = UT_WRITE_ENDPOINT;
589 req.bRequest = UR_CLEAR_FEATURE;
590 USETW(req.wValue, UF_ENDPOINT_HALT);
591 USETW(req.wIndex, pipe->endpoint->edesc->bEndpointAddress);
592 USETW(req.wLength, 0);
593 err = usbd_do_request_async(dev, &req, 0);
594 return (err);
595}
596
597void
598usbd_clear_endpoint_toggle(usbd_pipe_handle pipe)
599{
600 pipe->methods->cleartoggle(pipe);
601}
602
1550dfd9 603usbd_status
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604usbd_endpoint_count(usbd_interface_handle iface, u_int8_t *count)
605{
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606#ifdef DIAGNOSTIC
607 if (iface == NULL || iface->idesc == NULL) {
85f8e2ea 608 kprintf("usbd_endpoint_count: NULL pointer\n");
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609 return (USBD_INVAL);
610 }
611#endif
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612 *count = iface->idesc->bNumEndpoints;
613 return (USBD_NORMAL_COMPLETION);
614}
615
1550dfd9 616usbd_status
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617usbd_interface_count(usbd_device_handle dev, u_int8_t *count)
618{
619 if (dev->cdesc == NULL)
620 return (USBD_NOT_CONFIGURED);
621 *count = dev->cdesc->bNumInterface;
622 return (USBD_NORMAL_COMPLETION);
623}
624
1550dfd9 625void
984263bc
MD
626usbd_interface2device_handle(usbd_interface_handle iface,
627 usbd_device_handle *dev)
628{
629 *dev = iface->device;
984263bc
MD
630}
631
1550dfd9 632usbd_status
984263bc
MD
633usbd_device2interface_handle(usbd_device_handle dev,
634 u_int8_t ifaceno, usbd_interface_handle *iface)
635{
636 if (dev->cdesc == NULL)
637 return (USBD_NOT_CONFIGURED);
638 if (ifaceno >= dev->cdesc->bNumInterface)
639 return (USBD_INVAL);
640 *iface = &dev->ifaces[ifaceno];
641 return (USBD_NORMAL_COMPLETION);
642}
643
644usbd_device_handle
645usbd_pipe2device_handle(usbd_pipe_handle pipe)
646{
647 return (pipe->device);
648}
649
650/* XXXX use altno */
651usbd_status
652usbd_set_interface(usbd_interface_handle iface, int altidx)
653{
654 usb_device_request_t req;
655 usbd_status err;
1550dfd9 656 void *endpoints;
984263bc
MD
657
658 if (LIST_FIRST(&iface->pipes) != 0)
659 return (USBD_IN_USE);
660
1550dfd9 661 endpoints = iface->endpoints;
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MD
662 err = usbd_fill_iface_data(iface->device, iface->index, altidx);
663 if (err)
664 return (err);
665
1550dfd9
MD
666 /* new setting works, we can free old endpoints */
667 if (endpoints != NULL)
efda3bd0 668 kfree(endpoints, M_USB);
1550dfd9
MD
669
670#ifdef DIAGNOSTIC
671 if (iface->idesc == NULL) {
85f8e2ea 672 kprintf("usbd_set_interface: NULL pointer\n");
1550dfd9
MD
673 return (USBD_INVAL);
674 }
675#endif
676
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MD
677 req.bmRequestType = UT_WRITE_INTERFACE;
678 req.bRequest = UR_SET_INTERFACE;
679 USETW(req.wValue, iface->idesc->bAlternateSetting);
680 USETW(req.wIndex, iface->idesc->bInterfaceNumber);
681 USETW(req.wLength, 0);
682 return (usbd_do_request(iface->device, &req, 0));
683}
684
685int
686usbd_get_no_alts(usb_config_descriptor_t *cdesc, int ifaceno)
687{
688 char *p = (char *)cdesc;
689 char *end = p + UGETW(cdesc->wTotalLength);
690 usb_interface_descriptor_t *d;
691 int n;
692
693 for (n = 0; p < end; p += d->bLength) {
694 d = (usb_interface_descriptor_t *)p;
1550dfd9 695 if (p + d->bLength <= end &&
984263bc
MD
696 d->bDescriptorType == UDESC_INTERFACE &&
697 d->bInterfaceNumber == ifaceno)
698 n++;
699 }
700 return (n);
701}
702
703int
704usbd_get_interface_altindex(usbd_interface_handle iface)
705{
706 return (iface->altindex);
707}
708
709usbd_status
710usbd_get_interface(usbd_interface_handle iface, u_int8_t *aiface)
711{
712 usb_device_request_t req;
713
714 req.bmRequestType = UT_READ_INTERFACE;
715 req.bRequest = UR_GET_INTERFACE;
716 USETW(req.wValue, 0);
717 USETW(req.wIndex, iface->idesc->bInterfaceNumber);
718 USETW(req.wLength, 1);
719 return (usbd_do_request(iface->device, &req, aiface));
720}
721
722/*** Internal routines ***/
723
281cf3c2 724/* Dequeue all pipe operations, called from critical section. */
6ed427ca 725static usbd_status
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726usbd_ar_pipe(usbd_pipe_handle pipe)
727{
728 usbd_xfer_handle xfer;
729
984263bc
MD
730 DPRINTFN(2,("usbd_ar_pipe: pipe=%p\n", pipe));
731#ifdef USB_DEBUG
732 if (usbdebug > 5)
733 usbd_dump_queue(pipe);
734#endif
735 pipe->repeat = 0;
1550dfd9 736 pipe->aborting = 1;
fc1ef497 737 while ((xfer = STAILQ_FIRST(&pipe->queue)) != NULL) {
1550dfd9 738 DPRINTFN(2,("usbd_ar_pipe: pipe=%p xfer=%p (methods=%p)\n",
984263bc
MD
739 pipe, xfer, pipe->methods));
740 /* Make the HC abort it (and invoke the callback). */
741 pipe->methods->abort(xfer);
742 /* XXX only for non-0 usbd_clear_endpoint_stall(pipe); */
743 }
1550dfd9 744 pipe->aborting = 0;
984263bc
MD
745 return (USBD_NORMAL_COMPLETION);
746}
747
281cf3c2 748/* Called from critical section */
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MD
749void
750usb_transfer_complete(usbd_xfer_handle xfer)
751{
752 usbd_pipe_handle pipe = xfer->pipe;
753 usb_dma_t *dmap = &xfer->dmabuf;
281cf3c2
SZ
754 int sync = xfer->flags & USBD_SYNCHRONOUS;
755 int erred = xfer->status == USBD_CANCELLED ||
756 xfer->status == USBD_TIMEOUT;
984263bc
MD
757 int repeat = pipe->repeat;
758 int polling;
759
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760 DPRINTFN(5, ("usb_transfer_complete: pipe=%p xfer=%p status=%d "
761 "actlen=%d\n", pipe, xfer, xfer->status, xfer->actlen));
1550dfd9
MD
762#ifdef DIAGNOSTIC
763 if (xfer->busy_free != XFER_ONQU) {
85f8e2ea 764 kprintf("usb_transfer_complete: xfer=%p not busy 0x%08x\n",
1550dfd9
MD
765 xfer, xfer->busy_free);
766 return;
767 }
768#endif
984263bc
MD
769
770#ifdef DIAGNOSTIC
771 if (pipe == NULL) {
85f8e2ea 772 kprintf("usbd_transfer_cb: pipe==0, xfer=%p\n", xfer);
984263bc
MD
773 return;
774 }
775#endif
776 polling = pipe->device->bus->use_polling;
777 /* XXXX */
778 if (polling)
779 pipe->running = 0;
780
781 if (!(xfer->flags & USBD_NO_COPY) && xfer->actlen != 0 &&
782 usbd_xfer_isread(xfer)) {
783#ifdef DIAGNOSTIC
784 if (xfer->actlen > xfer->length) {
85f8e2ea 785 kprintf("usb_transfer_complete: actlen > len %d > %d\n",
984263bc
MD
786 xfer->actlen, xfer->length);
787 xfer->actlen = xfer->length;
788 }
789#endif
790 memcpy(xfer->buffer, KERNADDR(dmap, 0), xfer->actlen);
791 }
792
793 /* if we allocated the buffer in usbd_transfer() we free it here. */
794 if (xfer->rqflags & URQ_AUTO_DMABUF) {
795 if (!repeat) {
796 struct usbd_bus *bus = pipe->device->bus;
797 bus->methods->freem(bus, dmap);
798 xfer->rqflags &= ~URQ_AUTO_DMABUF;
799 }
800 }
801
984263bc
MD
802 if (!repeat) {
803 /* Remove request from queue. */
804#ifdef DIAGNOSTIC
fc1ef497 805 if (xfer != STAILQ_FIRST(&pipe->queue))
85f8e2ea 806 kprintf("usb_transfer_complete: bad dequeue %p != %p\n",
fc1ef497 807 xfer, STAILQ_FIRST(&pipe->queue));
1550dfd9 808 xfer->busy_free = XFER_BUSY;
984263bc 809#endif
fc1ef497 810 STAILQ_REMOVE_HEAD(&pipe->queue, next);
984263bc 811 }
1550dfd9 812 DPRINTFN(5,("usb_transfer_complete: repeat=%d new head=%p\n",
fc1ef497 813 repeat, STAILQ_FIRST(&pipe->queue)));
984263bc
MD
814
815 /* Count completed transfers. */
816 ++pipe->device->bus->stats.uds_requests
817 [pipe->endpoint->edesc->bmAttributes & UE_XFERTYPE];
818
819 xfer->done = 1;
820 if (!xfer->status && xfer->actlen < xfer->length &&
821 !(xfer->flags & USBD_SHORT_XFER_OK)) {
822 DPRINTFN(-1,("usbd_transfer_cb: short transfer %d<%d\n",
823 xfer->actlen, xfer->length));
824 xfer->status = USBD_SHORT_XFER;
825 }
826
281cf3c2
SZ
827 /*
828 * For repeat operations, call the callback first, as the xfer
829 * will not go away and the "done" method may modify it. Otherwise
830 * reverse the order in case the callback wants to free or reuse
831 * the xfer.
f32bdd67
MD
832 *
833 * USBD_CALLBACK_LAST is set by the keyboard driver to ensure
834 * that the xfer is restarted prior to doing the callback.
835 * Otherwise a CTL-ALT-ESC into the debugger will leave the
836 * xfer inactive and the keyboard will stop working.
281cf3c2 837 */
f32bdd67 838 if (repeat && (xfer->flags & USBD_CALLBACK_LAST) == 0) {
281cf3c2
SZ
839 if (xfer->callback)
840 xfer->callback(xfer, xfer->priv, xfer->status);
1550dfd9 841 pipe->methods->done(xfer);
281cf3c2
SZ
842 } else {
843 pipe->methods->done(xfer);
844 if (xfer->callback)
845 xfer->callback(xfer, xfer->priv, xfer->status);
846 }
1550dfd9 847
281cf3c2 848 if (sync && !polling)
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MD
849 wakeup(xfer);
850
851 if (!repeat) {
852 /* XXX should we stop the queue on all errors? */
281cf3c2 853 if (erred && pipe->iface != NULL) /* not control pipe */
984263bc
MD
854 pipe->running = 0;
855 else
856 usbd_start_next(pipe);
857 }
858}
859
860usbd_status
861usb_insert_transfer(usbd_xfer_handle xfer)
862{
863 usbd_pipe_handle pipe = xfer->pipe;
864 usbd_status err;
984263bc 865
1550dfd9 866 DPRINTFN(5,("usb_insert_transfer: pipe=%p running=%d timeout=%d\n",
984263bc 867 pipe, pipe->running, xfer->timeout));
1550dfd9
MD
868#ifdef DIAGNOSTIC
869 if (xfer->busy_free != XFER_BUSY) {
85f8e2ea 870 kprintf("usb_insert_transfer: xfer=%p not busy 0x%08x\n",
1550dfd9
MD
871 xfer, xfer->busy_free);
872 return (USBD_INVAL);
873 }
874 xfer->busy_free = XFER_ONQU;
875#endif
4e01b467 876 crit_enter();
fc1ef497 877 STAILQ_INSERT_TAIL(&pipe->queue, xfer, next);
984263bc
MD
878 if (pipe->running)
879 err = USBD_IN_PROGRESS;
880 else {
881 pipe->running = 1;
882 err = USBD_NORMAL_COMPLETION;
883 }
4e01b467 884 crit_exit();
984263bc
MD
885 return (err);
886}
887
281cf3c2 888/* Called from critical section */
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MD
889void
890usbd_start_next(usbd_pipe_handle pipe)
891{
892 usbd_xfer_handle xfer;
893 usbd_status err;
894
984263bc
MD
895#ifdef DIAGNOSTIC
896 if (pipe == NULL) {
85f8e2ea 897 kprintf("usbd_start_next: pipe == NULL\n");
984263bc
MD
898 return;
899 }
900 if (pipe->methods == NULL || pipe->methods->start == NULL) {
85f8e2ea 901 kprintf("usbd_start_next: pipe=%p no start method\n", pipe);
984263bc
MD
902 return;
903 }
904#endif
905
906 /* Get next request in queue. */
fc1ef497 907 xfer = STAILQ_FIRST(&pipe->queue);
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MD
908 DPRINTFN(5, ("usbd_start_next: pipe=%p, xfer=%p\n", pipe, xfer));
909 if (xfer == NULL) {
910 pipe->running = 0;
911 } else {
912 err = pipe->methods->start(xfer);
913 if (err != USBD_IN_PROGRESS) {
85f8e2ea 914 kprintf("usbd_start_next: error=%d\n", err);
984263bc
MD
915 pipe->running = 0;
916 /* XXX do what? */
917 }
918 }
919}
920
921usbd_status
922usbd_do_request(usbd_device_handle dev, usb_device_request_t *req, void *data)
923{
1550dfd9
MD
924 return (usbd_do_request_flags(dev, req, data, 0, 0,
925 USBD_DEFAULT_TIMEOUT));
926}
927
928usbd_status
929usbd_do_request_flags(usbd_device_handle dev, usb_device_request_t *req,
930 void *data, u_int16_t flags, int *actlen, u_int32_t timo)
931{
932 return (usbd_do_request_flags_pipe(dev, dev->default_pipe, req,
933 data, flags, actlen, timo));
984263bc
MD
934}
935
936usbd_status
1550dfd9
MD
937usbd_do_request_flags_pipe(usbd_device_handle dev, usbd_pipe_handle pipe,
938 usb_device_request_t *req, void *data, u_int16_t flags, int *actlen,
939 u_int32_t timeout)
984263bc
MD
940{
941 usbd_xfer_handle xfer;
942 usbd_status err;
943
944#ifdef DIAGNOSTIC
281cf3c2
SZ
945 KASSERT(mycpu->gd_intr_nesting_level == 0,
946 ("usbd_do_request: in interrupt context"));
984263bc 947 if (dev->bus->intr_context) {
85f8e2ea 948 kprintf("usbd_do_request: not in process context\n");
984263bc
MD
949 return (USBD_INVAL);
950 }
951#endif
952
953 xfer = usbd_alloc_xfer(dev);
954 if (xfer == NULL)
955 return (USBD_NOMEM);
1550dfd9
MD
956 usbd_setup_default_xfer(xfer, dev, 0, timeout, req,
957 data, UGETW(req->wLength), flags, 0);
958 xfer->pipe = pipe;
984263bc
MD
959 err = usbd_sync_transfer(xfer);
960#if defined(USB_DEBUG) || defined(DIAGNOSTIC)
961 if (xfer->actlen > xfer->length)
962 DPRINTF(("usbd_do_request: overrun addr=%d type=0x%02x req=0x"
963 "%02x val=%d index=%d rlen=%d length=%d actlen=%d\n",
964 dev->address, xfer->request.bmRequestType,
965 xfer->request.bRequest, UGETW(xfer->request.wValue),
1550dfd9
MD
966 UGETW(xfer->request.wIndex),
967 UGETW(xfer->request.wLength),
984263bc
MD
968 xfer->length, xfer->actlen));
969#endif
970 if (actlen != NULL)
971 *actlen = xfer->actlen;
972 if (err == USBD_STALLED) {
1550dfd9 973 /*
984263bc
MD
974 * The control endpoint has stalled. Control endpoints
975 * should not halt, but some may do so anyway so clear
976 * any halt condition.
977 */
978 usb_device_request_t treq;
979 usb_status_t status;
980 u_int16_t s;
981 usbd_status nerr;
982
983 treq.bmRequestType = UT_READ_ENDPOINT;
984 treq.bRequest = UR_GET_STATUS;
985 USETW(treq.wValue, 0);
986 USETW(treq.wIndex, 0);
987 USETW(treq.wLength, sizeof(usb_status_t));
988 usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT,
989 &treq, &status,sizeof(usb_status_t),
990 0, 0);
991 nerr = usbd_sync_transfer(xfer);
992 if (nerr)
993 goto bad;
994 s = UGETW(status.wStatus);
995 DPRINTF(("usbd_do_request: status = 0x%04x\n", s));
996 if (!(s & UES_HALT))
997 goto bad;
998 treq.bmRequestType = UT_WRITE_ENDPOINT;
999 treq.bRequest = UR_CLEAR_FEATURE;
1000 USETW(treq.wValue, UF_ENDPOINT_HALT);
1001 USETW(treq.wIndex, 0);
1002 USETW(treq.wLength, 0);
1003 usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT,
1004 &treq, &status, 0, 0, 0);
1005 nerr = usbd_sync_transfer(xfer);
1006 if (nerr)
1007 goto bad;
1008 }
1009
1010 bad:
1011 usbd_free_xfer(xfer);
1012 return (err);
1013}
1014
1015void
1016usbd_do_request_async_cb(usbd_xfer_handle xfer, usbd_private_handle priv,
1017 usbd_status status)
1018{
1019#if defined(USB_DEBUG) || defined(DIAGNOSTIC)
1020 if (xfer->actlen > xfer->length)
1021 DPRINTF(("usbd_do_request: overrun addr=%d type=0x%02x req=0x"
1022 "%02x val=%d index=%d rlen=%d length=%d actlen=%d\n",
1550dfd9 1023 xfer->pipe->device->address,
984263bc
MD
1024 xfer->request.bmRequestType,
1025 xfer->request.bRequest, UGETW(xfer->request.wValue),
1550dfd9
MD
1026 UGETW(xfer->request.wIndex),
1027 UGETW(xfer->request.wLength),
984263bc
MD
1028 xfer->length, xfer->actlen));
1029#endif
1030 usbd_free_xfer(xfer);
1031}
1032
1033/*
1034 * Execute a request without waiting for completion.
1035 * Can be used from interrupt context.
1036 */
1037usbd_status
1038usbd_do_request_async(usbd_device_handle dev, usb_device_request_t *req,
1039 void *data)
1040{
1041 usbd_xfer_handle xfer;
1042 usbd_status err;
1043
1044 xfer = usbd_alloc_xfer(dev);
1045 if (xfer == NULL)
1046 return (USBD_NOMEM);
1047 usbd_setup_default_xfer(xfer, dev, 0, USBD_DEFAULT_TIMEOUT, req,
1048 data, UGETW(req->wLength), 0, usbd_do_request_async_cb);
1049 err = usbd_transfer(xfer);
281cf3c2 1050 if (err != USBD_IN_PROGRESS && err) {
984263bc
MD
1051 usbd_free_xfer(xfer);
1052 return (err);
1053 }
1054 return (USBD_NORMAL_COMPLETION);
1055}
1056
1550dfd9 1057const struct usbd_quirks *
984263bc
MD
1058usbd_get_quirks(usbd_device_handle dev)
1059{
1550dfd9
MD
1060#ifdef DIAGNOSTIC
1061 if (dev == NULL) {
85f8e2ea 1062 kprintf("usbd_get_quirks: dev == NULL\n");
1550dfd9
MD
1063 return 0;
1064 }
1065#endif
984263bc
MD
1066 return (dev->quirks);
1067}
1068
1069/* XXX do periodic free() of free list */
1070
1071/*
1072 * Called from keyboard driver when in polling mode.
1073 */
1074void
1075usbd_dopoll(usbd_interface_handle iface)
1076{
1077 iface->device->bus->methods->do_poll(iface->device->bus);
1078}
1079
1080void
1550dfd9 1081usbd_set_polling(usbd_device_handle dev, int on)
984263bc
MD
1082{
1083 if (on)
1550dfd9 1084 dev->bus->use_polling++;
984263bc 1085 else
1550dfd9
MD
1086 dev->bus->use_polling--;
1087 /* When polling we need to make sure there is nothing pending to do. */
1088 if (dev->bus->use_polling)
1089 dev->bus->methods->soft_intr(dev->bus);
984263bc
MD
1090}
1091
1092
1093usb_endpoint_descriptor_t *
1094usbd_get_endpoint_descriptor(usbd_interface_handle iface, u_int8_t address)
1095{
1096 struct usbd_endpoint *ep;
1097 int i;
1098
1099 for (i = 0; i < iface->idesc->bNumEndpoints; i++) {
1100 ep = &iface->endpoints[i];
1101 if (ep->edesc->bEndpointAddress == address)
1102 return (iface->endpoints[i].edesc);
1103 }
1104 return (0);
1105}
1106
1107/*
1550dfd9
MD
1108 * usbd_ratecheck() can limit the number of error messages that occurs.
1109 * When a device is unplugged it may take up to 0.25s for the hub driver
1110 * to notice it. If the driver continuosly tries to do I/O operations
1111 * this can generate a large number of messages.
1112 */
1113int
1114usbd_ratecheck(struct timeval *last)
1115{
281cf3c2
SZ
1116 if (last->tv_sec == time_second)
1117 return (0);
1118 last->tv_sec = time_second;
1550dfd9
MD
1119 return (1);
1120}
1121
1122/*
984263bc
MD
1123 * Search for a vendor/product pair in an array. The item size is
1124 * given as an argument.
1125 */
1126const struct usb_devno *
1127usb_match_device(const struct usb_devno *tbl, u_int nentries, u_int sz,
1128 u_int16_t vendor, u_int16_t product)
1129{
1130 while (nentries-- > 0) {
1550dfd9
MD
1131 u_int16_t tproduct = tbl->ud_product;
1132 if (tbl->ud_vendor == vendor &&
1133 (tproduct == product || tproduct == USB_PRODUCT_ANY))
984263bc
MD
1134 return (tbl);
1135 tbl = (const struct usb_devno *)((const char *)tbl + sz);
1136 }
1137 return (NULL);
1138}
1139
281cf3c2
SZ
1140
1141void
1142usb_desc_iter_init(usbd_device_handle dev, usbd_desc_iter_t *iter)
1143{
1144 const usb_config_descriptor_t *cd = usbd_get_config_descriptor(dev);
1145
1146 iter->cur = (const uByte *)cd;
1147 iter->end = (const uByte *)cd + UGETW(cd->wTotalLength);
1148}
1149
1150const usb_descriptor_t *
1151usb_desc_iter_next(usbd_desc_iter_t *iter)
1152{
1153 const usb_descriptor_t *desc;
1154
1155 if (iter->cur + sizeof(usb_descriptor_t) >= iter->end) {
1156 if (iter->cur != iter->end)
85f8e2ea 1157 kprintf("usb_desc_iter_next: bad descriptor\n");
281cf3c2
SZ
1158 return NULL;
1159 }
1160 desc = (const usb_descriptor_t *)iter->cur;
1161 if (desc->bLength == 0) {
85f8e2ea 1162 kprintf("usb_desc_iter_next: descriptor length = 0\n");
281cf3c2
SZ
1163 return NULL;
1164 }
1165 iter->cur += desc->bLength;
1166 if (iter->cur > iter->end) {
85f8e2ea 1167 kprintf("usb_desc_iter_next: descriptor length too large\n");
281cf3c2
SZ
1168 return NULL;
1169 }
1170 return desc;
1171}
1172
1173usbd_status
1174usbd_get_string(usbd_device_handle dev, int si, char *buf)
1175{
1176 int swap = dev->quirks->uq_flags & UQ_SWAP_UNICODE;
1177 usb_string_descriptor_t us;
1178 char *s;
1179 int i, n;
1180 u_int16_t c;
1181 usbd_status err;
1182 int size;
1183
1184 buf[0] = '\0';
1185 if (si == 0)
1186 return (USBD_INVAL);
1187 if (dev->quirks->uq_flags & UQ_NO_STRINGS)
1188 return (USBD_STALLED);
1189 if (dev->langid == USBD_NOLANG) {
1190 /* Set up default language */
1191 err = usbd_get_string_desc(dev, USB_LANGUAGE_TABLE, 0, &us,
1192 &size);
1193 if (err || size < 4) {
1194 DPRINTFN(-1,("usbd_get_string: getting lang failed, using 0\n"));
1195 dev->langid = 0; /* Well, just pick something then */
1196 } else {
1197 /* Pick the first language as the default. */
1198 dev->langid = UGETW(us.bString[0]);
1199 }
1200 }
1201 err = usbd_get_string_desc(dev, si, dev->langid, &us, &size);
1202 if (err)
1203 return (err);
1204 s = buf;
1205 n = size / 2 - 1;
1206 for (i = 0; i < n; i++) {
1207 c = UGETW(us.bString[i]);
1208 /* Convert from Unicode, handle buggy strings. */
1209 if ((c & 0xff00) == 0)
1210 *s++ = c;
1211 else if ((c & 0x00ff) == 0 && swap)
1212 *s++ = c >> 8;
1213 else
1214 *s++ = '?';
1215 }
1216 *s++ = 0;
1217 return (USBD_NORMAL_COMPLETION);
1218}
1219
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MD
1220int
1221usbd_driver_load(module_t mod, int what, void *arg)
1222{
1223 /* XXX should implement something like a function that removes all generic devices */
1550dfd9 1224
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MD
1225 return (0);
1226}
1227