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Commit | Line | Data |
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f1ae32a1 GH |
1 | #include "hw/usb.h" |
2 | #include "hw/usb/desc.h" | |
37fb59d3 GH |
3 | #include "trace.h" |
4 | ||
5 | /* ------------------------------------------------------------------ */ | |
6 | ||
7 | static uint8_t usb_lo(uint16_t val) | |
8 | { | |
9 | return val & 0xff; | |
10 | } | |
11 | ||
12 | static uint8_t usb_hi(uint16_t val) | |
13 | { | |
14 | return (val >> 8) & 0xff; | |
15 | } | |
16 | ||
17 | int usb_desc_device(const USBDescID *id, const USBDescDevice *dev, | |
18 | uint8_t *dest, size_t len) | |
19 | { | |
20 | uint8_t bLength = 0x12; | |
d3f904ea | 21 | USBDescriptor *d = (void *)dest; |
37fb59d3 GH |
22 | |
23 | if (len < bLength) { | |
24 | return -1; | |
25 | } | |
26 | ||
d3f904ea GH |
27 | d->bLength = bLength; |
28 | d->bDescriptorType = USB_DT_DEVICE; | |
37fb59d3 | 29 | |
d3f904ea GH |
30 | d->u.device.bcdUSB_lo = usb_lo(dev->bcdUSB); |
31 | d->u.device.bcdUSB_hi = usb_hi(dev->bcdUSB); | |
32 | d->u.device.bDeviceClass = dev->bDeviceClass; | |
33 | d->u.device.bDeviceSubClass = dev->bDeviceSubClass; | |
34 | d->u.device.bDeviceProtocol = dev->bDeviceProtocol; | |
35 | d->u.device.bMaxPacketSize0 = dev->bMaxPacketSize0; | |
37fb59d3 | 36 | |
d3f904ea GH |
37 | d->u.device.idVendor_lo = usb_lo(id->idVendor); |
38 | d->u.device.idVendor_hi = usb_hi(id->idVendor); | |
39 | d->u.device.idProduct_lo = usb_lo(id->idProduct); | |
40 | d->u.device.idProduct_hi = usb_hi(id->idProduct); | |
41 | d->u.device.bcdDevice_lo = usb_lo(id->bcdDevice); | |
42 | d->u.device.bcdDevice_hi = usb_hi(id->bcdDevice); | |
43 | d->u.device.iManufacturer = id->iManufacturer; | |
44 | d->u.device.iProduct = id->iProduct; | |
45 | d->u.device.iSerialNumber = id->iSerialNumber; | |
37fb59d3 | 46 | |
d3f904ea | 47 | d->u.device.bNumConfigurations = dev->bNumConfigurations; |
37fb59d3 GH |
48 | |
49 | return bLength; | |
50 | } | |
51 | ||
25620cba GH |
52 | int usb_desc_device_qualifier(const USBDescDevice *dev, |
53 | uint8_t *dest, size_t len) | |
54 | { | |
55 | uint8_t bLength = 0x0a; | |
3cfeee61 | 56 | USBDescriptor *d = (void *)dest; |
25620cba GH |
57 | |
58 | if (len < bLength) { | |
59 | return -1; | |
60 | } | |
61 | ||
3cfeee61 GH |
62 | d->bLength = bLength; |
63 | d->bDescriptorType = USB_DT_DEVICE_QUALIFIER; | |
64 | ||
65 | d->u.device_qualifier.bcdUSB_lo = usb_lo(dev->bcdUSB); | |
66 | d->u.device_qualifier.bcdUSB_hi = usb_hi(dev->bcdUSB); | |
67 | d->u.device_qualifier.bDeviceClass = dev->bDeviceClass; | |
68 | d->u.device_qualifier.bDeviceSubClass = dev->bDeviceSubClass; | |
69 | d->u.device_qualifier.bDeviceProtocol = dev->bDeviceProtocol; | |
70 | d->u.device_qualifier.bMaxPacketSize0 = dev->bMaxPacketSize0; | |
71 | d->u.device_qualifier.bNumConfigurations = dev->bNumConfigurations; | |
72 | d->u.device_qualifier.bReserved = 0; | |
25620cba GH |
73 | |
74 | return bLength; | |
75 | } | |
76 | ||
37fb59d3 GH |
77 | int usb_desc_config(const USBDescConfig *conf, uint8_t *dest, size_t len) |
78 | { | |
79 | uint8_t bLength = 0x09; | |
80 | uint16_t wTotalLength = 0; | |
fef13fa8 | 81 | int i, rc; |
37fb59d3 GH |
82 | |
83 | if (len < bLength) { | |
84 | return -1; | |
85 | } | |
86 | ||
87 | dest[0x00] = bLength; | |
88 | dest[0x01] = USB_DT_CONFIG; | |
89 | dest[0x04] = conf->bNumInterfaces; | |
90 | dest[0x05] = conf->bConfigurationValue; | |
91 | dest[0x06] = conf->iConfiguration; | |
92 | dest[0x07] = conf->bmAttributes; | |
93 | dest[0x08] = conf->bMaxPower; | |
94 | wTotalLength += bLength; | |
95 | ||
6e625fc7 BH |
96 | /* handle grouped interfaces if any*/ |
97 | for (i = 0; i < conf->nif_groups; i++) { | |
98 | rc = usb_desc_iface_group(&(conf->if_groups[i]), | |
99 | dest + wTotalLength, | |
100 | len - wTotalLength); | |
101 | if (rc < 0) { | |
102 | return rc; | |
103 | } | |
104 | wTotalLength += rc; | |
105 | } | |
106 | ||
107 | /* handle normal (ungrouped / no IAD) interfaces if any */ | |
fef13fa8 | 108 | for (i = 0; i < conf->nif; i++) { |
37fb59d3 GH |
109 | rc = usb_desc_iface(conf->ifs + i, dest + wTotalLength, len - wTotalLength); |
110 | if (rc < 0) { | |
111 | return rc; | |
112 | } | |
113 | wTotalLength += rc; | |
114 | } | |
115 | ||
116 | dest[0x02] = usb_lo(wTotalLength); | |
117 | dest[0x03] = usb_hi(wTotalLength); | |
118 | return wTotalLength; | |
119 | } | |
120 | ||
6e625fc7 BH |
121 | int usb_desc_iface_group(const USBDescIfaceAssoc *iad, uint8_t *dest, |
122 | size_t len) | |
123 | { | |
124 | int pos = 0; | |
125 | int i = 0; | |
126 | ||
127 | /* handle interface association descriptor */ | |
128 | uint8_t bLength = 0x08; | |
129 | ||
130 | if (len < bLength) { | |
131 | return -1; | |
132 | } | |
133 | ||
134 | dest[0x00] = bLength; | |
135 | dest[0x01] = USB_DT_INTERFACE_ASSOC; | |
136 | dest[0x02] = iad->bFirstInterface; | |
137 | dest[0x03] = iad->bInterfaceCount; | |
138 | dest[0x04] = iad->bFunctionClass; | |
139 | dest[0x05] = iad->bFunctionSubClass; | |
140 | dest[0x06] = iad->bFunctionProtocol; | |
141 | dest[0x07] = iad->iFunction; | |
142 | pos += bLength; | |
143 | ||
144 | /* handle associated interfaces in this group */ | |
145 | for (i = 0; i < iad->nif; i++) { | |
146 | int rc = usb_desc_iface(&(iad->ifs[i]), dest + pos, len - pos); | |
147 | if (rc < 0) { | |
148 | return rc; | |
149 | } | |
150 | pos += rc; | |
151 | } | |
152 | ||
153 | return pos; | |
154 | } | |
155 | ||
37fb59d3 GH |
156 | int usb_desc_iface(const USBDescIface *iface, uint8_t *dest, size_t len) |
157 | { | |
158 | uint8_t bLength = 0x09; | |
159 | int i, rc, pos = 0; | |
160 | ||
161 | if (len < bLength) { | |
162 | return -1; | |
163 | } | |
164 | ||
165 | dest[0x00] = bLength; | |
166 | dest[0x01] = USB_DT_INTERFACE; | |
167 | dest[0x02] = iface->bInterfaceNumber; | |
168 | dest[0x03] = iface->bAlternateSetting; | |
169 | dest[0x04] = iface->bNumEndpoints; | |
170 | dest[0x05] = iface->bInterfaceClass; | |
171 | dest[0x06] = iface->bInterfaceSubClass; | |
172 | dest[0x07] = iface->bInterfaceProtocol; | |
173 | dest[0x08] = iface->iInterface; | |
174 | pos += bLength; | |
175 | ||
176 | for (i = 0; i < iface->ndesc; i++) { | |
177 | rc = usb_desc_other(iface->descs + i, dest + pos, len - pos); | |
178 | if (rc < 0) { | |
179 | return rc; | |
180 | } | |
181 | pos += rc; | |
182 | } | |
183 | ||
184 | for (i = 0; i < iface->bNumEndpoints; i++) { | |
185 | rc = usb_desc_endpoint(iface->eps + i, dest + pos, len - pos); | |
186 | if (rc < 0) { | |
187 | return rc; | |
188 | } | |
189 | pos += rc; | |
190 | } | |
191 | ||
192 | return pos; | |
193 | } | |
194 | ||
195 | int usb_desc_endpoint(const USBDescEndpoint *ep, uint8_t *dest, size_t len) | |
196 | { | |
cc5f1395 GH |
197 | uint8_t bLength = ep->is_audio ? 0x09 : 0x07; |
198 | uint8_t extralen = ep->extra ? ep->extra[0] : 0; | |
37fb59d3 | 199 | |
cc5f1395 | 200 | if (len < bLength + extralen) { |
37fb59d3 GH |
201 | return -1; |
202 | } | |
203 | ||
204 | dest[0x00] = bLength; | |
205 | dest[0x01] = USB_DT_ENDPOINT; | |
206 | dest[0x02] = ep->bEndpointAddress; | |
207 | dest[0x03] = ep->bmAttributes; | |
208 | dest[0x04] = usb_lo(ep->wMaxPacketSize); | |
209 | dest[0x05] = usb_hi(ep->wMaxPacketSize); | |
210 | dest[0x06] = ep->bInterval; | |
cc5f1395 GH |
211 | if (ep->is_audio) { |
212 | dest[0x07] = ep->bRefresh; | |
213 | dest[0x08] = ep->bSynchAddress; | |
214 | } | |
215 | if (ep->extra) { | |
216 | memcpy(dest + bLength, ep->extra, extralen); | |
217 | } | |
37fb59d3 | 218 | |
cc5f1395 | 219 | return bLength + extralen; |
37fb59d3 GH |
220 | } |
221 | ||
222 | int usb_desc_other(const USBDescOther *desc, uint8_t *dest, size_t len) | |
223 | { | |
224 | int bLength = desc->length ? desc->length : desc->data[0]; | |
225 | ||
226 | if (len < bLength) { | |
227 | return -1; | |
228 | } | |
229 | ||
230 | memcpy(dest, desc->data, bLength); | |
231 | return bLength; | |
232 | } | |
233 | ||
132a3f55 GH |
234 | /* ------------------------------------------------------------------ */ |
235 | ||
83a53bbc GH |
236 | static void usb_desc_ep_init(USBDevice *dev) |
237 | { | |
238 | const USBDescIface *iface; | |
239 | int i, e, pid, ep; | |
240 | ||
241 | usb_ep_init(dev); | |
242 | for (i = 0; i < dev->ninterfaces; i++) { | |
243 | iface = dev->ifaces[i]; | |
244 | if (iface == NULL) { | |
245 | continue; | |
246 | } | |
247 | for (e = 0; e < iface->bNumEndpoints; e++) { | |
248 | pid = (iface->eps[e].bEndpointAddress & USB_DIR_IN) ? | |
249 | USB_TOKEN_IN : USB_TOKEN_OUT; | |
250 | ep = iface->eps[e].bEndpointAddress & 0x0f; | |
251 | usb_ep_set_type(dev, pid, ep, iface->eps[e].bmAttributes & 0x03); | |
252 | usb_ep_set_ifnum(dev, pid, ep, iface->bInterfaceNumber); | |
f003397c GH |
253 | usb_ep_set_max_packet_size(dev, pid, ep, |
254 | iface->eps[e].wMaxPacketSize); | |
83a53bbc GH |
255 | } |
256 | } | |
257 | } | |
258 | ||
1de14d43 GH |
259 | static const USBDescIface *usb_desc_find_interface(USBDevice *dev, |
260 | int nif, int alt) | |
261 | { | |
262 | const USBDescIface *iface; | |
263 | int g, i; | |
264 | ||
265 | if (!dev->config) { | |
266 | return NULL; | |
267 | } | |
268 | for (g = 0; g < dev->config->nif_groups; g++) { | |
269 | for (i = 0; i < dev->config->if_groups[g].nif; i++) { | |
270 | iface = &dev->config->if_groups[g].ifs[i]; | |
271 | if (iface->bInterfaceNumber == nif && | |
272 | iface->bAlternateSetting == alt) { | |
273 | return iface; | |
274 | } | |
275 | } | |
276 | } | |
277 | for (i = 0; i < dev->config->nif; i++) { | |
278 | iface = &dev->config->ifs[i]; | |
279 | if (iface->bInterfaceNumber == nif && | |
280 | iface->bAlternateSetting == alt) { | |
281 | return iface; | |
282 | } | |
283 | } | |
284 | return NULL; | |
285 | } | |
286 | ||
287 | static int usb_desc_set_interface(USBDevice *dev, int index, int value) | |
288 | { | |
289 | const USBDescIface *iface; | |
290 | int old; | |
291 | ||
292 | iface = usb_desc_find_interface(dev, index, value); | |
293 | if (iface == NULL) { | |
294 | return -1; | |
295 | } | |
296 | ||
297 | old = dev->altsetting[index]; | |
298 | dev->altsetting[index] = value; | |
299 | dev->ifaces[index] = iface; | |
83a53bbc | 300 | usb_desc_ep_init(dev); |
1de14d43 | 301 | |
62aed765 AL |
302 | if (old != value) { |
303 | usb_device_set_interface(dev, index, old, value); | |
1de14d43 GH |
304 | } |
305 | return 0; | |
306 | } | |
307 | ||
65360511 GH |
308 | static int usb_desc_set_config(USBDevice *dev, int value) |
309 | { | |
310 | int i; | |
311 | ||
312 | if (value == 0) { | |
313 | dev->configuration = 0; | |
314 | dev->ninterfaces = 0; | |
315 | dev->config = NULL; | |
316 | } else { | |
317 | for (i = 0; i < dev->device->bNumConfigurations; i++) { | |
318 | if (dev->device->confs[i].bConfigurationValue == value) { | |
319 | dev->configuration = value; | |
320 | dev->ninterfaces = dev->device->confs[i].bNumInterfaces; | |
321 | dev->config = dev->device->confs + i; | |
1de14d43 | 322 | assert(dev->ninterfaces <= USB_MAX_INTERFACES); |
65360511 GH |
323 | } |
324 | } | |
325 | if (i < dev->device->bNumConfigurations) { | |
326 | return -1; | |
327 | } | |
328 | } | |
1de14d43 GH |
329 | |
330 | for (i = 0; i < dev->ninterfaces; i++) { | |
331 | usb_desc_set_interface(dev, i, 0); | |
332 | } | |
333 | for (; i < USB_MAX_INTERFACES; i++) { | |
334 | dev->altsetting[i] = 0; | |
335 | dev->ifaces[i] = NULL; | |
336 | } | |
337 | ||
65360511 GH |
338 | return 0; |
339 | } | |
340 | ||
32d41919 | 341 | static void usb_desc_setdefaults(USBDevice *dev) |
a980a065 | 342 | { |
62aed765 | 343 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
a980a065 GH |
344 | |
345 | assert(desc != NULL); | |
32d41919 GH |
346 | switch (dev->speed) { |
347 | case USB_SPEED_LOW: | |
348 | case USB_SPEED_FULL: | |
349 | dev->device = desc->full; | |
350 | break; | |
351 | case USB_SPEED_HIGH: | |
352 | dev->device = desc->high; | |
353 | break; | |
354 | } | |
65360511 | 355 | usb_desc_set_config(dev, 0); |
a980a065 GH |
356 | } |
357 | ||
32d41919 GH |
358 | void usb_desc_init(USBDevice *dev) |
359 | { | |
62aed765 | 360 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
ba3f9bfb HG |
361 | |
362 | assert(desc != NULL); | |
32d41919 | 363 | dev->speed = USB_SPEED_FULL; |
ba3f9bfb HG |
364 | dev->speedmask = 0; |
365 | if (desc->full) { | |
366 | dev->speedmask |= USB_SPEED_MASK_FULL; | |
367 | } | |
368 | if (desc->high) { | |
369 | dev->speedmask |= USB_SPEED_MASK_HIGH; | |
370 | } | |
32d41919 GH |
371 | usb_desc_setdefaults(dev); |
372 | } | |
373 | ||
374 | void usb_desc_attach(USBDevice *dev) | |
375 | { | |
62aed765 | 376 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
32d41919 GH |
377 | |
378 | assert(desc != NULL); | |
379 | if (desc->high && (dev->port->speedmask & USB_SPEED_MASK_HIGH)) { | |
380 | dev->speed = USB_SPEED_HIGH; | |
381 | } else if (desc->full && (dev->port->speedmask & USB_SPEED_MASK_FULL)) { | |
382 | dev->speed = USB_SPEED_FULL; | |
383 | } else { | |
384 | fprintf(stderr, "usb: port/device speed mismatch for \"%s\"\n", | |
62aed765 | 385 | usb_device_get_product_desc(dev)); |
32d41919 GH |
386 | return; |
387 | } | |
388 | usb_desc_setdefaults(dev); | |
389 | } | |
390 | ||
132a3f55 GH |
391 | void usb_desc_set_string(USBDevice *dev, uint8_t index, const char *str) |
392 | { | |
393 | USBDescString *s; | |
394 | ||
395 | QLIST_FOREACH(s, &dev->strings, next) { | |
396 | if (s->index == index) { | |
397 | break; | |
398 | } | |
399 | } | |
400 | if (s == NULL) { | |
7267c094 | 401 | s = g_malloc0(sizeof(*s)); |
132a3f55 GH |
402 | s->index = index; |
403 | QLIST_INSERT_HEAD(&dev->strings, s, next); | |
404 | } | |
7267c094 AL |
405 | g_free(s->str); |
406 | s->str = g_strdup(str); | |
132a3f55 GH |
407 | } |
408 | ||
409 | const char *usb_desc_get_string(USBDevice *dev, uint8_t index) | |
410 | { | |
411 | USBDescString *s; | |
412 | ||
413 | QLIST_FOREACH(s, &dev->strings, next) { | |
414 | if (s->index == index) { | |
415 | return s->str; | |
416 | } | |
417 | } | |
418 | return NULL; | |
419 | } | |
420 | ||
421 | int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len) | |
37fb59d3 GH |
422 | { |
423 | uint8_t bLength, pos, i; | |
132a3f55 | 424 | const char *str; |
37fb59d3 GH |
425 | |
426 | if (len < 4) { | |
427 | return -1; | |
428 | } | |
429 | ||
430 | if (index == 0) { | |
431 | /* language ids */ | |
432 | dest[0] = 4; | |
433 | dest[1] = USB_DT_STRING; | |
434 | dest[2] = 0x09; | |
435 | dest[3] = 0x04; | |
436 | return 4; | |
437 | } | |
438 | ||
132a3f55 GH |
439 | str = usb_desc_get_string(dev, index); |
440 | if (str == NULL) { | |
62aed765 | 441 | str = usb_device_get_usb_desc(dev)->str[index]; |
132a3f55 GH |
442 | if (str == NULL) { |
443 | return 0; | |
444 | } | |
37fb59d3 | 445 | } |
132a3f55 GH |
446 | |
447 | bLength = strlen(str) * 2 + 2; | |
37fb59d3 GH |
448 | dest[0] = bLength; |
449 | dest[1] = USB_DT_STRING; | |
450 | i = 0; pos = 2; | |
451 | while (pos+1 < bLength && pos+1 < len) { | |
132a3f55 | 452 | dest[pos++] = str[i++]; |
37fb59d3 GH |
453 | dest[pos++] = 0; |
454 | } | |
455 | return pos; | |
456 | } | |
457 | ||
37fb59d3 GH |
458 | int usb_desc_get_descriptor(USBDevice *dev, int value, uint8_t *dest, size_t len) |
459 | { | |
62aed765 | 460 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
25620cba | 461 | const USBDescDevice *other_dev; |
37fb59d3 GH |
462 | uint8_t buf[256]; |
463 | uint8_t type = value >> 8; | |
464 | uint8_t index = value & 0xff; | |
465 | int ret = -1; | |
466 | ||
25620cba | 467 | if (dev->speed == USB_SPEED_HIGH) { |
62aed765 | 468 | other_dev = usb_device_get_usb_desc(dev)->full; |
25620cba | 469 | } else { |
62aed765 | 470 | other_dev = usb_device_get_usb_desc(dev)->high; |
25620cba GH |
471 | } |
472 | ||
37fb59d3 GH |
473 | switch(type) { |
474 | case USB_DT_DEVICE: | |
a980a065 | 475 | ret = usb_desc_device(&desc->id, dev->device, buf, sizeof(buf)); |
37fb59d3 GH |
476 | trace_usb_desc_device(dev->addr, len, ret); |
477 | break; | |
478 | case USB_DT_CONFIG: | |
a980a065 GH |
479 | if (index < dev->device->bNumConfigurations) { |
480 | ret = usb_desc_config(dev->device->confs + index, buf, sizeof(buf)); | |
37fb59d3 GH |
481 | } |
482 | trace_usb_desc_config(dev->addr, index, len, ret); | |
483 | break; | |
484 | case USB_DT_STRING: | |
132a3f55 | 485 | ret = usb_desc_string(dev, index, buf, sizeof(buf)); |
37fb59d3 GH |
486 | trace_usb_desc_string(dev->addr, index, len, ret); |
487 | break; | |
25620cba GH |
488 | |
489 | case USB_DT_DEVICE_QUALIFIER: | |
490 | if (other_dev != NULL) { | |
491 | ret = usb_desc_device_qualifier(other_dev, buf, sizeof(buf)); | |
492 | } | |
493 | trace_usb_desc_device_qualifier(dev->addr, len, ret); | |
494 | break; | |
495 | case USB_DT_OTHER_SPEED_CONFIG: | |
496 | if (other_dev != NULL && index < other_dev->bNumConfigurations) { | |
497 | ret = usb_desc_config(other_dev->confs + index, buf, sizeof(buf)); | |
498 | buf[0x01] = USB_DT_OTHER_SPEED_CONFIG; | |
499 | } | |
500 | trace_usb_desc_other_speed_config(dev->addr, index, len, ret); | |
501 | break; | |
502 | ||
a7fb71d1 GH |
503 | case USB_DT_DEBUG: |
504 | /* ignore silently */ | |
505 | break; | |
506 | ||
37fb59d3 GH |
507 | default: |
508 | fprintf(stderr, "%s: %d unknown type %d (len %zd)\n", __FUNCTION__, | |
509 | dev->addr, type, len); | |
510 | break; | |
511 | } | |
512 | ||
513 | if (ret > 0) { | |
514 | if (ret > len) { | |
515 | ret = len; | |
516 | } | |
517 | memcpy(dest, buf, ret); | |
518 | } | |
519 | return ret; | |
520 | } | |
521 | ||
007fd62f HG |
522 | int usb_desc_handle_control(USBDevice *dev, USBPacket *p, |
523 | int request, int value, int index, int length, uint8_t *data) | |
37fb59d3 | 524 | { |
62aed765 | 525 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
65360511 | 526 | int ret = -1; |
37fb59d3 GH |
527 | |
528 | assert(desc != NULL); | |
529 | switch(request) { | |
41c6abbd GH |
530 | case DeviceOutRequest | USB_REQ_SET_ADDRESS: |
531 | dev->addr = value; | |
532 | trace_usb_set_addr(dev->addr); | |
533 | ret = 0; | |
534 | break; | |
535 | ||
37fb59d3 GH |
536 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
537 | ret = usb_desc_get_descriptor(dev, value, data, length); | |
538 | break; | |
a980a065 GH |
539 | |
540 | case DeviceRequest | USB_REQ_GET_CONFIGURATION: | |
8db36e9d AL |
541 | /* |
542 | * 9.4.2: 0 should be returned if the device is unconfigured, otherwise | |
543 | * the non zero value of bConfigurationValue. | |
544 | */ | |
545 | data[0] = dev->config ? dev->config->bConfigurationValue : 0; | |
a980a065 GH |
546 | ret = 1; |
547 | break; | |
548 | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: | |
65360511 | 549 | ret = usb_desc_set_config(dev, value); |
a980a065 GH |
550 | trace_usb_set_config(dev->addr, value, ret); |
551 | break; | |
ed5a83dd | 552 | |
8db36e9d AL |
553 | case DeviceRequest | USB_REQ_GET_STATUS: { |
554 | const USBDescConfig *config = dev->config ? | |
555 | dev->config : &dev->device->confs[0]; | |
556 | ||
ed5a83dd | 557 | data[0] = 0; |
8db36e9d AL |
558 | /* |
559 | * Default state: Device behavior when this request is received while | |
560 | * the device is in the Default state is not specified. | |
561 | * We return the same value that a configured device would return if | |
562 | * it used the first configuration. | |
563 | */ | |
564 | if (config->bmAttributes & 0x40) { | |
ed5a83dd GH |
565 | data[0] |= 1 << USB_DEVICE_SELF_POWERED; |
566 | } | |
567 | if (dev->remote_wakeup) { | |
568 | data[0] |= 1 << USB_DEVICE_REMOTE_WAKEUP; | |
569 | } | |
570 | data[1] = 0x00; | |
571 | ret = 2; | |
572 | break; | |
8db36e9d | 573 | } |
ed5a83dd GH |
574 | case DeviceOutRequest | USB_REQ_CLEAR_FEATURE: |
575 | if (value == USB_DEVICE_REMOTE_WAKEUP) { | |
576 | dev->remote_wakeup = 0; | |
577 | ret = 0; | |
578 | } | |
579 | trace_usb_clear_device_feature(dev->addr, value, ret); | |
580 | break; | |
581 | case DeviceOutRequest | USB_REQ_SET_FEATURE: | |
582 | if (value == USB_DEVICE_REMOTE_WAKEUP) { | |
583 | dev->remote_wakeup = 1; | |
584 | ret = 0; | |
585 | } | |
586 | trace_usb_set_device_feature(dev->addr, value, ret); | |
587 | break; | |
1de14d43 GH |
588 | |
589 | case InterfaceRequest | USB_REQ_GET_INTERFACE: | |
590 | if (index < 0 || index >= dev->ninterfaces) { | |
591 | break; | |
592 | } | |
593 | data[0] = dev->altsetting[index]; | |
594 | ret = 1; | |
595 | break; | |
596 | case InterfaceOutRequest | USB_REQ_SET_INTERFACE: | |
597 | ret = usb_desc_set_interface(dev, index, value); | |
598 | trace_usb_set_interface(dev->addr, index, value, ret); | |
599 | break; | |
600 | ||
37fb59d3 GH |
601 | } |
602 | return ret; | |
603 | } |