mmap.2: Remove (now) useless BUGS section.
[dragonfly.git] / lib / libusb / libusb10_desc.c
1 /* $FreeBSD: head/lib/libusb/libusb10_desc.c 248236 2013-03-13 12:23:14Z hselasky $ */
2 /*-
3  * Copyright (c) 2009 Sylvestre Gallon. All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26
27 #ifdef LIBUSB_GLOBAL_INCLUDE_FILE
28 #include LIBUSB_GLOBAL_INCLUDE_FILE
29 #else
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <time.h>
34 #include <sys/queue.h>
35 #endif
36
37 #define libusb_device_handle libusb20_device
38
39 #include "libusb20.h"
40 #include "libusb20_desc.h"
41 #include "libusb20_int.h"
42 #include "libusb.h"
43 #include "libusb10.h"
44
45 #define N_ALIGN(n) (-((-(n)) & (-8UL)))
46
47 /* USB descriptors */
48
49 int
50 libusb_get_device_descriptor(libusb_device *dev,
51     struct libusb_device_descriptor *desc)
52 {
53         struct LIBUSB20_DEVICE_DESC_DECODED *pdesc;
54         struct libusb20_device *pdev;
55
56         if ((dev == NULL) || (desc == NULL))
57                 return (LIBUSB_ERROR_INVALID_PARAM);
58
59         pdev = dev->os_priv;
60         pdesc = libusb20_dev_get_device_desc(pdev);
61
62         desc->bLength = pdesc->bLength;
63         desc->bDescriptorType = pdesc->bDescriptorType;
64         desc->bcdUSB = pdesc->bcdUSB;
65         desc->bDeviceClass = pdesc->bDeviceClass;
66         desc->bDeviceSubClass = pdesc->bDeviceSubClass;
67         desc->bDeviceProtocol = pdesc->bDeviceProtocol;
68         desc->bMaxPacketSize0 = pdesc->bMaxPacketSize0;
69         desc->idVendor = pdesc->idVendor;
70         desc->idProduct = pdesc->idProduct;
71         desc->bcdDevice = pdesc->bcdDevice;
72         desc->iManufacturer = pdesc->iManufacturer;
73         desc->iProduct = pdesc->iProduct;
74         desc->iSerialNumber = pdesc->iSerialNumber;
75         desc->bNumConfigurations = pdesc->bNumConfigurations;
76
77         return (0);
78 }
79
80 int
81 libusb_get_active_config_descriptor(libusb_device *dev,
82     struct libusb_config_descriptor **config)
83 {
84         struct libusb20_device *pdev;
85         uint8_t config_index;
86
87         pdev = dev->os_priv;
88         config_index = libusb20_dev_get_config_index(pdev);
89
90         return (libusb_get_config_descriptor(dev, config_index, config));
91 }
92
93 int
94 libusb_get_config_descriptor(libusb_device *dev, uint8_t config_index,
95     struct libusb_config_descriptor **config)
96 {
97         struct libusb20_device *pdev;
98         struct libusb20_config *pconf;
99         struct libusb20_interface *pinf;
100         struct libusb20_endpoint *pend;
101         struct libusb_config_descriptor *pconfd;
102         struct libusb_interface_descriptor *ifd;
103         struct libusb_endpoint_descriptor *endd;
104         uint8_t *pextra;
105         uint16_t nextra;
106         uint8_t nif;
107         uint8_t nep;
108         uint8_t nalt;
109         uint8_t i;
110         uint8_t j;
111         uint8_t k;
112
113         if (dev == NULL || config == NULL)
114                 return (LIBUSB_ERROR_INVALID_PARAM);
115
116         *config = NULL;
117
118         pdev = dev->os_priv;
119         pconf = libusb20_dev_alloc_config(pdev, config_index);
120
121         if (pconf == NULL)
122                 return (LIBUSB_ERROR_NOT_FOUND);
123
124         nalt = nif = pconf->num_interface;
125         nep = 0;
126         nextra = N_ALIGN(pconf->extra.len);
127
128         for (i = 0; i < nif; i++) {
129
130                 pinf = pconf->interface + i;
131                 nextra += N_ALIGN(pinf->extra.len);
132                 nep += pinf->num_endpoints;
133                 k = pinf->num_endpoints;
134                 pend = pinf->endpoints;
135                 while (k--) {
136                         nextra += N_ALIGN(pend->extra.len);
137                         pend++;
138                 }
139
140                 j = pinf->num_altsetting;
141                 nalt += pinf->num_altsetting;
142                 pinf = pinf->altsetting;
143                 while (j--) {
144                         nextra += N_ALIGN(pinf->extra.len);
145                         nep += pinf->num_endpoints;
146                         k = pinf->num_endpoints;
147                         pend = pinf->endpoints;
148                         while (k--) {
149                                 nextra += N_ALIGN(pend->extra.len);
150                                 pend++;
151                         }
152                         pinf++;
153                 }
154         }
155
156         nextra = nextra +
157             (1 * sizeof(libusb_config_descriptor)) +
158             (nif * sizeof(libusb_interface)) +
159             (nalt * sizeof(libusb_interface_descriptor)) +
160             (nep * sizeof(libusb_endpoint_descriptor));
161
162         nextra = N_ALIGN(nextra);
163
164         pconfd = malloc(nextra);
165
166         if (pconfd == NULL) {
167                 free(pconf);
168                 return (LIBUSB_ERROR_NO_MEM);
169         }
170         /* make sure memory is initialised */
171         memset(pconfd, 0, nextra);
172
173         pconfd->interface = (libusb_interface *) (pconfd + 1);
174
175         ifd = (libusb_interface_descriptor *) (pconfd->interface + nif);
176         endd = (libusb_endpoint_descriptor *) (ifd + nalt);
177         pextra = (uint8_t *)(endd + nep);
178
179         /* fill in config descriptor */
180
181         pconfd->bLength = pconf->desc.bLength;
182         pconfd->bDescriptorType = pconf->desc.bDescriptorType;
183         pconfd->wTotalLength = pconf->desc.wTotalLength;
184         pconfd->bNumInterfaces = pconf->desc.bNumInterfaces;
185         pconfd->bConfigurationValue = pconf->desc.bConfigurationValue;
186         pconfd->iConfiguration = pconf->desc.iConfiguration;
187         pconfd->bmAttributes = pconf->desc.bmAttributes;
188         pconfd->MaxPower = pconf->desc.bMaxPower;
189
190         if (pconf->extra.len != 0) {
191                 pconfd->extra_length = pconf->extra.len;
192                 pconfd->extra = pextra;
193                 memcpy(pextra, pconf->extra.ptr, pconfd->extra_length);
194                 pextra += N_ALIGN(pconfd->extra_length);
195         }
196         /* setup all interface and endpoint pointers */
197
198         for (i = 0; i < nif; i++) {
199
200                 pconfd->interface[i].altsetting = ifd;
201                 ifd->endpoint = endd;
202                 endd += pconf->interface[i].num_endpoints;
203                 ifd++;
204
205                 for (j = 0; j < pconf->interface[i].num_altsetting; j++) {
206                         ifd->endpoint = endd;
207                         endd += pconf->interface[i].altsetting[j].num_endpoints;
208                         ifd++;
209                 }
210         }
211
212         /* fill in all interface and endpoint data */
213
214         for (i = 0; i < nif; i++) {
215                 pinf = &pconf->interface[i];
216                 pconfd->interface[i].num_altsetting = pinf->num_altsetting + 1;
217                 for (j = 0; j < pconfd->interface[i].num_altsetting; j++) {
218                         if (j != 0)
219                                 pinf = &pconf->interface[i].altsetting[j - 1];
220                         ifd = &pconfd->interface[i].altsetting[j];
221                         ifd->bLength = pinf->desc.bLength;
222                         ifd->bDescriptorType = pinf->desc.bDescriptorType;
223                         ifd->bInterfaceNumber = pinf->desc.bInterfaceNumber;
224                         ifd->bAlternateSetting = pinf->desc.bAlternateSetting;
225                         ifd->bNumEndpoints = pinf->desc.bNumEndpoints;
226                         ifd->bInterfaceClass = pinf->desc.bInterfaceClass;
227                         ifd->bInterfaceSubClass = pinf->desc.bInterfaceSubClass;
228                         ifd->bInterfaceProtocol = pinf->desc.bInterfaceProtocol;
229                         ifd->iInterface = pinf->desc.iInterface;
230                         if (pinf->extra.len != 0) {
231                                 ifd->extra_length = pinf->extra.len;
232                                 ifd->extra = pextra;
233                                 memcpy(pextra, pinf->extra.ptr, pinf->extra.len);
234                                 pextra += N_ALIGN(pinf->extra.len);
235                         }
236                         for (k = 0; k < pinf->num_endpoints; k++) {
237                                 pend = &pinf->endpoints[k];
238                                 endd = &ifd->endpoint[k];
239                                 endd->bLength = pend->desc.bLength;
240                                 endd->bDescriptorType = pend->desc.bDescriptorType;
241                                 endd->bEndpointAddress = pend->desc.bEndpointAddress;
242                                 endd->bmAttributes = pend->desc.bmAttributes;
243                                 endd->wMaxPacketSize = pend->desc.wMaxPacketSize;
244                                 endd->bInterval = pend->desc.bInterval;
245                                 endd->bRefresh = pend->desc.bRefresh;
246                                 endd->bSynchAddress = pend->desc.bSynchAddress;
247                                 if (pend->extra.len != 0) {
248                                         endd->extra_length = pend->extra.len;
249                                         endd->extra = pextra;
250                                         memcpy(pextra, pend->extra.ptr, pend->extra.len);
251                                         pextra += N_ALIGN(pend->extra.len);
252                                 }
253                         }
254                 }
255         }
256
257         free(pconf);
258
259         *config = pconfd;
260
261         return (0);                     /* success */
262 }
263
264 int
265 libusb_get_config_descriptor_by_value(libusb_device *dev,
266     uint8_t bConfigurationValue, struct libusb_config_descriptor **config)
267 {
268         struct LIBUSB20_DEVICE_DESC_DECODED *pdesc;
269         struct libusb20_device *pdev;
270         int i;
271         int err;
272
273         if (dev == NULL || config == NULL)
274                 return (LIBUSB_ERROR_INVALID_PARAM);
275
276         pdev = dev->os_priv;
277         pdesc = libusb20_dev_get_device_desc(pdev);
278
279         for (i = 0; i < pdesc->bNumConfigurations; i++) {
280                 err = libusb_get_config_descriptor(dev, i, config);
281                 if (err)
282                         return (err);
283
284                 if ((*config)->bConfigurationValue == bConfigurationValue)
285                         return (0);     /* success */
286
287                 libusb_free_config_descriptor(*config);
288         }
289
290         *config = NULL;
291
292         return (LIBUSB_ERROR_NOT_FOUND);
293 }
294
295 void
296 libusb_free_config_descriptor(struct libusb_config_descriptor *config)
297 {
298         free(config);
299 }
300
301 int
302 libusb_get_string_descriptor(libusb_device_handle *pdev,
303     uint8_t desc_index, uint16_t langid, unsigned char *data,
304     int length)
305 {
306         if (pdev == NULL || data == NULL || length < 1)
307                 return (LIBUSB_ERROR_INVALID_PARAM);
308
309         if (length > 65535)
310                 length = 65535;
311
312         /* put some default data into the destination buffer */
313         data[0] = 0;
314
315         return (libusb_control_transfer(pdev, LIBUSB_ENDPOINT_IN,
316             LIBUSB_REQUEST_GET_DESCRIPTOR, (LIBUSB_DT_STRING << 8) | desc_index,
317             langid, data, length, 1000));
318 }
319
320 int
321 libusb_get_string_descriptor_ascii(libusb_device_handle *pdev,
322     uint8_t desc_index, unsigned char *data, int length)
323 {
324         if (pdev == NULL || data == NULL || length < 1)
325                 return (LIBUSB_ERROR_INVALID_PARAM);
326
327         if (length > 65535)
328                 length = 65535;
329
330         /* put some default data into the destination buffer */
331         data[0] = 0;
332
333         if (libusb20_dev_req_string_simple_sync(pdev, desc_index,
334             data, length) == 0)
335                 return (strlen(data));
336
337         return (LIBUSB_ERROR_OTHER);
338 }
339
340 int
341 libusb_get_descriptor(libusb_device_handle * devh, uint8_t desc_type, 
342     uint8_t desc_index, uint8_t *data, int length)
343 {
344         if (devh == NULL || data == NULL || length < 1)
345                 return (LIBUSB_ERROR_INVALID_PARAM);
346
347         if (length > 65535)
348                 length = 65535;
349
350         return (libusb_control_transfer(devh, LIBUSB_ENDPOINT_IN,
351             LIBUSB_REQUEST_GET_DESCRIPTOR, (desc_type << 8) | desc_index, 0, data,
352             length, 1000));
353 }
354
355 int
356 libusb_parse_ss_endpoint_comp(const void *buf, int len,
357     struct libusb_ss_endpoint_companion_descriptor **ep_comp)
358 {
359         if (buf == NULL || ep_comp == NULL || len < 1)
360                 return (LIBUSB_ERROR_INVALID_PARAM);
361
362         if (len > 65535)
363                 len = 65535;
364
365         *ep_comp = NULL;
366
367         while (len != 0) {
368                 uint8_t dlen;
369                 uint8_t dtype;
370
371                 dlen = ((const uint8_t *)buf)[0];
372                 dtype = ((const uint8_t *)buf)[1];
373
374                 if (dlen < 2 || dlen > len)
375                         break;
376
377                 if (dlen >= LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE &&
378                     dtype == LIBUSB_DT_SS_ENDPOINT_COMPANION) {
379                         struct libusb_ss_endpoint_companion_descriptor *ptr;
380
381                         ptr = malloc(sizeof(*ptr));
382                         if (ptr == NULL)
383                                 return (LIBUSB_ERROR_NO_MEM);
384
385                         ptr->bLength = LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE;
386                         ptr->bDescriptorType = dtype;
387                         ptr->bMaxBurst = ((const uint8_t *)buf)[2];
388                         ptr->bmAttributes = ((const uint8_t *)buf)[3];
389                         ptr->wBytesPerInterval = ((const uint8_t *)buf)[4] |
390                             (((const uint8_t *)buf)[5] << 8);
391
392                         *ep_comp = ptr;
393
394                         return (0);     /* success */
395                 }
396
397                 buf = ((const uint8_t *)buf) + dlen;
398                 len -= dlen;
399         }
400         return (LIBUSB_ERROR_IO);
401 }
402
403 void
404 libusb_free_ss_endpoint_comp(struct libusb_ss_endpoint_companion_descriptor *ep_comp)
405 {
406         if (ep_comp == NULL)
407                 return;
408
409         free(ep_comp);
410 }
411
412 int
413 libusb_parse_bos_descriptor(const void *buf, int len,
414     struct libusb_bos_descriptor **bos)
415 {
416         struct libusb_bos_descriptor *ptr;
417         struct libusb_usb_2_0_device_capability_descriptor *dcap_20 = NULL;
418         struct libusb_ss_usb_device_capability_descriptor *ss_cap = NULL;
419
420         if (buf == NULL || bos == NULL || len < 1)
421                 return (LIBUSB_ERROR_INVALID_PARAM);
422
423         if (len > 65535)
424                 len = 65535;
425
426         *bos = ptr = NULL;
427
428         while (len != 0) {
429                 uint8_t dlen;
430                 uint8_t dtype;
431
432                 dlen = ((const uint8_t *)buf)[0];
433                 dtype = ((const uint8_t *)buf)[1];
434
435                 if (dlen < 2 || dlen > len)
436                         break;
437
438                 if (dlen >= LIBUSB_DT_BOS_SIZE &&
439                     dtype == LIBUSB_DT_BOS) {
440
441                         ptr = malloc(sizeof(*ptr) + sizeof(*dcap_20) +
442                             sizeof(*ss_cap));
443
444                         if (ptr == NULL)
445                                 return (LIBUSB_ERROR_NO_MEM);
446
447                         *bos = ptr;
448
449                         ptr->bLength = LIBUSB_DT_BOS_SIZE;
450                         ptr->bDescriptorType = dtype;
451                         ptr->wTotalLength = ((const uint8_t *)buf)[2] |
452                             (((const uint8_t *)buf)[3] << 8);
453                         ptr->bNumDeviceCapabilities = ((const uint8_t *)buf)[4];
454                         ptr->usb_2_0_ext_cap = NULL;
455                         ptr->ss_usb_cap = NULL;
456
457                         dcap_20 = (void *)(ptr + 1);
458                         ss_cap = (void *)(dcap_20 + 1);
459                 }
460                 if (dlen >= 3 &&
461                     ptr != NULL &&
462                     dtype == LIBUSB_DT_DEVICE_CAPABILITY) {
463                         switch (((const uint8_t *)buf)[2]) {
464                         case LIBUSB_USB_2_0_EXTENSION_DEVICE_CAPABILITY:
465                                 if (ptr->usb_2_0_ext_cap != NULL || dcap_20 == NULL)
466                                         break;
467                                 if (dlen < LIBUSB_USB_2_0_EXTENSION_DEVICE_CAPABILITY_SIZE)
468                                         break;
469
470                                 ptr->usb_2_0_ext_cap = dcap_20;
471
472                                 dcap_20->bLength = LIBUSB_USB_2_0_EXTENSION_DEVICE_CAPABILITY_SIZE;
473                                 dcap_20->bDescriptorType = dtype;
474                                 dcap_20->bDevCapabilityType = ((const uint8_t *)buf)[2];
475                                 dcap_20->bmAttributes = ((const uint8_t *)buf)[3] |
476                                     (((const uint8_t *)buf)[4] << 8) |
477                                     (((const uint8_t *)buf)[5] << 16) |
478                                     (((const uint8_t *)buf)[6] << 24);
479                                 break;
480
481                         case LIBUSB_SS_USB_DEVICE_CAPABILITY:
482                                 if (ptr->ss_usb_cap != NULL || ss_cap == NULL)
483                                         break;
484                                 if (dlen < LIBUSB_SS_USB_DEVICE_CAPABILITY_SIZE)
485                                         break;
486
487                                 ptr->ss_usb_cap = ss_cap;
488
489                                 ss_cap->bLength = LIBUSB_SS_USB_DEVICE_CAPABILITY_SIZE;
490                                 ss_cap->bDescriptorType = dtype;
491                                 ss_cap->bDevCapabilityType = ((const uint8_t *)buf)[2];
492                                 ss_cap->bmAttributes = ((const uint8_t *)buf)[3];
493                                 ss_cap->wSpeedSupported = ((const uint8_t *)buf)[4] |
494                                     (((const uint8_t *)buf)[5] << 8);
495                                 ss_cap->bFunctionalitySupport = ((const uint8_t *)buf)[6];
496                                 ss_cap->bU1DevExitLat = ((const uint8_t *)buf)[7];
497                                 ss_cap->wU2DevExitLat = ((const uint8_t *)buf)[8] |
498                                     (((const uint8_t *)buf)[9] << 8);
499                                 break;
500
501                         default:
502                                 break;
503                         }
504                 }
505
506                 buf = ((const uint8_t *)buf) + dlen;
507                 len -= dlen;
508         }
509         if (ptr != NULL)
510                 return (0);             /* success */
511
512         return (LIBUSB_ERROR_IO);
513 }
514
515 void
516 libusb_free_bos_descriptor(struct libusb_bos_descriptor *bos)
517 {
518         if (bos == NULL)
519                 return;
520
521         free(bos);
522 }