1 /* $FreeBSD: head/lib/libusb/libusb10_desc.c 248236 2013-03-13 12:23:14Z hselasky $ */
3 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #ifdef LIBUSB_GLOBAL_INCLUDE_FILE
28 #include LIBUSB_GLOBAL_INCLUDE_FILE
34 #include <sys/queue.h>
37 #define libusb_device_handle libusb20_device
40 #include "libusb20_desc.h"
41 #include "libusb20_int.h"
45 #define N_ALIGN(n) (-((-(n)) & (-8UL)))
50 libusb_get_device_descriptor(libusb_device *dev,
51 struct libusb_device_descriptor *desc)
53 struct LIBUSB20_DEVICE_DESC_DECODED *pdesc;
54 struct libusb20_device *pdev;
56 if ((dev == NULL) || (desc == NULL))
57 return (LIBUSB_ERROR_INVALID_PARAM);
60 pdesc = libusb20_dev_get_device_desc(pdev);
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;
81 libusb_get_active_config_descriptor(libusb_device *dev,
82 struct libusb_config_descriptor **config)
84 struct libusb20_device *pdev;
88 config_index = libusb20_dev_get_config_index(pdev);
90 return (libusb_get_config_descriptor(dev, config_index, config));
94 libusb_get_config_descriptor(libusb_device *dev, uint8_t config_index,
95 struct libusb_config_descriptor **config)
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;
113 if (dev == NULL || config == NULL)
114 return (LIBUSB_ERROR_INVALID_PARAM);
119 pconf = libusb20_dev_alloc_config(pdev, config_index);
122 return (LIBUSB_ERROR_NOT_FOUND);
124 nalt = nif = pconf->num_interface;
126 nextra = N_ALIGN(pconf->extra.len);
128 for (i = 0; i < nif; i++) {
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;
136 nextra += N_ALIGN(pend->extra.len);
140 j = pinf->num_altsetting;
141 nalt += pinf->num_altsetting;
142 pinf = pinf->altsetting;
144 nextra += N_ALIGN(pinf->extra.len);
145 nep += pinf->num_endpoints;
146 k = pinf->num_endpoints;
147 pend = pinf->endpoints;
149 nextra += N_ALIGN(pend->extra.len);
157 (1 * sizeof(libusb_config_descriptor)) +
158 (nif * sizeof(libusb_interface)) +
159 (nalt * sizeof(libusb_interface_descriptor)) +
160 (nep * sizeof(libusb_endpoint_descriptor));
162 nextra = N_ALIGN(nextra);
164 pconfd = malloc(nextra);
166 if (pconfd == NULL) {
168 return (LIBUSB_ERROR_NO_MEM);
170 /* make sure memory is initialised */
171 memset(pconfd, 0, nextra);
173 pconfd->interface = (libusb_interface *) (pconfd + 1);
175 ifd = (libusb_interface_descriptor *) (pconfd->interface + nif);
176 endd = (libusb_endpoint_descriptor *) (ifd + nalt);
177 pextra = (uint8_t *)(endd + nep);
179 /* fill in config descriptor */
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;
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);
196 /* setup all interface and endpoint pointers */
198 for (i = 0; i < nif; i++) {
200 pconfd->interface[i].altsetting = ifd;
201 ifd->endpoint = endd;
202 endd += pconf->interface[i].num_endpoints;
205 for (j = 0; j < pconf->interface[i].num_altsetting; j++) {
206 ifd->endpoint = endd;
207 endd += pconf->interface[i].altsetting[j].num_endpoints;
212 /* fill in all interface and endpoint data */
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++) {
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;
233 memcpy(pextra, pinf->extra.ptr, pinf->extra.len);
234 pextra += N_ALIGN(pinf->extra.len);
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);
261 return (0); /* success */
265 libusb_get_config_descriptor_by_value(libusb_device *dev,
266 uint8_t bConfigurationValue, struct libusb_config_descriptor **config)
268 struct LIBUSB20_DEVICE_DESC_DECODED *pdesc;
269 struct libusb20_device *pdev;
273 if (dev == NULL || config == NULL)
274 return (LIBUSB_ERROR_INVALID_PARAM);
277 pdesc = libusb20_dev_get_device_desc(pdev);
279 for (i = 0; i < pdesc->bNumConfigurations; i++) {
280 err = libusb_get_config_descriptor(dev, i, config);
284 if ((*config)->bConfigurationValue == bConfigurationValue)
285 return (0); /* success */
287 libusb_free_config_descriptor(*config);
292 return (LIBUSB_ERROR_NOT_FOUND);
296 libusb_free_config_descriptor(struct libusb_config_descriptor *config)
302 libusb_get_string_descriptor(libusb_device_handle *pdev,
303 uint8_t desc_index, uint16_t langid, unsigned char *data,
306 if (pdev == NULL || data == NULL || length < 1)
307 return (LIBUSB_ERROR_INVALID_PARAM);
312 /* put some default data into the destination buffer */
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));
321 libusb_get_string_descriptor_ascii(libusb_device_handle *pdev,
322 uint8_t desc_index, unsigned char *data, int length)
324 if (pdev == NULL || data == NULL || length < 1)
325 return (LIBUSB_ERROR_INVALID_PARAM);
330 /* put some default data into the destination buffer */
333 if (libusb20_dev_req_string_simple_sync(pdev, desc_index,
335 return (strlen(data));
337 return (LIBUSB_ERROR_OTHER);
341 libusb_get_descriptor(libusb_device_handle * devh, uint8_t desc_type,
342 uint8_t desc_index, uint8_t *data, int length)
344 if (devh == NULL || data == NULL || length < 1)
345 return (LIBUSB_ERROR_INVALID_PARAM);
350 return (libusb_control_transfer(devh, LIBUSB_ENDPOINT_IN,
351 LIBUSB_REQUEST_GET_DESCRIPTOR, (desc_type << 8) | desc_index, 0, data,
356 libusb_parse_ss_endpoint_comp(const void *buf, int len,
357 struct libusb_ss_endpoint_companion_descriptor **ep_comp)
359 if (buf == NULL || ep_comp == NULL || len < 1)
360 return (LIBUSB_ERROR_INVALID_PARAM);
371 dlen = ((const uint8_t *)buf)[0];
372 dtype = ((const uint8_t *)buf)[1];
374 if (dlen < 2 || dlen > len)
377 if (dlen >= LIBUSB_DT_SS_ENDPOINT_COMPANION_SIZE &&
378 dtype == LIBUSB_DT_SS_ENDPOINT_COMPANION) {
379 struct libusb_ss_endpoint_companion_descriptor *ptr;
381 ptr = malloc(sizeof(*ptr));
383 return (LIBUSB_ERROR_NO_MEM);
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);
394 return (0); /* success */
397 buf = ((const uint8_t *)buf) + dlen;
400 return (LIBUSB_ERROR_IO);
404 libusb_free_ss_endpoint_comp(struct libusb_ss_endpoint_companion_descriptor *ep_comp)
413 libusb_parse_bos_descriptor(const void *buf, int len,
414 struct libusb_bos_descriptor **bos)
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;
420 if (buf == NULL || bos == NULL || len < 1)
421 return (LIBUSB_ERROR_INVALID_PARAM);
432 dlen = ((const uint8_t *)buf)[0];
433 dtype = ((const uint8_t *)buf)[1];
435 if (dlen < 2 || dlen > len)
438 if (dlen >= LIBUSB_DT_BOS_SIZE &&
439 dtype == LIBUSB_DT_BOS) {
441 ptr = malloc(sizeof(*ptr) + sizeof(*dcap_20) +
445 return (LIBUSB_ERROR_NO_MEM);
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;
457 dcap_20 = (void *)(ptr + 1);
458 ss_cap = (void *)(dcap_20 + 1);
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)
467 if (dlen < LIBUSB_USB_2_0_EXTENSION_DEVICE_CAPABILITY_SIZE)
470 ptr->usb_2_0_ext_cap = dcap_20;
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);
481 case LIBUSB_SS_USB_DEVICE_CAPABILITY:
482 if (ptr->ss_usb_cap != NULL || ss_cap == NULL)
484 if (dlen < LIBUSB_SS_USB_DEVICE_CAPABILITY_SIZE)
487 ptr->ss_usb_cap = ss_cap;
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);
506 buf = ((const uint8_t *)buf) + dlen;
510 return (0); /* success */
512 return (LIBUSB_ERROR_IO);
516 libusb_free_bos_descriptor(struct libusb_bos_descriptor *bos)