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Commit | Line | Data |
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9d55d1ad GH |
1 | #include <ctype.h> |
2 | ||
f1ae32a1 GH |
3 | #include "hw/usb.h" |
4 | #include "hw/usb/desc.h" | |
37fb59d3 GH |
5 | #include "trace.h" |
6 | ||
7 | /* ------------------------------------------------------------------ */ | |
8 | ||
9 | static uint8_t usb_lo(uint16_t val) | |
10 | { | |
11 | return val & 0xff; | |
12 | } | |
13 | ||
14 | static uint8_t usb_hi(uint16_t val) | |
15 | { | |
16 | return (val >> 8) & 0xff; | |
17 | } | |
18 | ||
19 | int usb_desc_device(const USBDescID *id, const USBDescDevice *dev, | |
20 | uint8_t *dest, size_t len) | |
21 | { | |
22 | uint8_t bLength = 0x12; | |
d3f904ea | 23 | USBDescriptor *d = (void *)dest; |
37fb59d3 GH |
24 | |
25 | if (len < bLength) { | |
26 | return -1; | |
27 | } | |
28 | ||
d3f904ea GH |
29 | d->bLength = bLength; |
30 | d->bDescriptorType = USB_DT_DEVICE; | |
37fb59d3 | 31 | |
d3f904ea GH |
32 | d->u.device.bcdUSB_lo = usb_lo(dev->bcdUSB); |
33 | d->u.device.bcdUSB_hi = usb_hi(dev->bcdUSB); | |
34 | d->u.device.bDeviceClass = dev->bDeviceClass; | |
35 | d->u.device.bDeviceSubClass = dev->bDeviceSubClass; | |
36 | d->u.device.bDeviceProtocol = dev->bDeviceProtocol; | |
37 | d->u.device.bMaxPacketSize0 = dev->bMaxPacketSize0; | |
37fb59d3 | 38 | |
d3f904ea GH |
39 | d->u.device.idVendor_lo = usb_lo(id->idVendor); |
40 | d->u.device.idVendor_hi = usb_hi(id->idVendor); | |
41 | d->u.device.idProduct_lo = usb_lo(id->idProduct); | |
42 | d->u.device.idProduct_hi = usb_hi(id->idProduct); | |
43 | d->u.device.bcdDevice_lo = usb_lo(id->bcdDevice); | |
44 | d->u.device.bcdDevice_hi = usb_hi(id->bcdDevice); | |
45 | d->u.device.iManufacturer = id->iManufacturer; | |
46 | d->u.device.iProduct = id->iProduct; | |
47 | d->u.device.iSerialNumber = id->iSerialNumber; | |
37fb59d3 | 48 | |
d3f904ea | 49 | d->u.device.bNumConfigurations = dev->bNumConfigurations; |
37fb59d3 GH |
50 | |
51 | return bLength; | |
52 | } | |
53 | ||
25620cba GH |
54 | int usb_desc_device_qualifier(const USBDescDevice *dev, |
55 | uint8_t *dest, size_t len) | |
56 | { | |
57 | uint8_t bLength = 0x0a; | |
3cfeee61 | 58 | USBDescriptor *d = (void *)dest; |
25620cba GH |
59 | |
60 | if (len < bLength) { | |
61 | return -1; | |
62 | } | |
63 | ||
3cfeee61 GH |
64 | d->bLength = bLength; |
65 | d->bDescriptorType = USB_DT_DEVICE_QUALIFIER; | |
66 | ||
67 | d->u.device_qualifier.bcdUSB_lo = usb_lo(dev->bcdUSB); | |
68 | d->u.device_qualifier.bcdUSB_hi = usb_hi(dev->bcdUSB); | |
69 | d->u.device_qualifier.bDeviceClass = dev->bDeviceClass; | |
70 | d->u.device_qualifier.bDeviceSubClass = dev->bDeviceSubClass; | |
71 | d->u.device_qualifier.bDeviceProtocol = dev->bDeviceProtocol; | |
72 | d->u.device_qualifier.bMaxPacketSize0 = dev->bMaxPacketSize0; | |
73 | d->u.device_qualifier.bNumConfigurations = dev->bNumConfigurations; | |
74 | d->u.device_qualifier.bReserved = 0; | |
25620cba GH |
75 | |
76 | return bLength; | |
77 | } | |
78 | ||
37fb59d3 GH |
79 | int usb_desc_config(const USBDescConfig *conf, uint8_t *dest, size_t len) |
80 | { | |
81 | uint8_t bLength = 0x09; | |
82 | uint16_t wTotalLength = 0; | |
0a263db1 | 83 | USBDescriptor *d = (void *)dest; |
fef13fa8 | 84 | int i, rc; |
37fb59d3 GH |
85 | |
86 | if (len < bLength) { | |
87 | return -1; | |
88 | } | |
89 | ||
0a263db1 GH |
90 | d->bLength = bLength; |
91 | d->bDescriptorType = USB_DT_CONFIG; | |
92 | ||
93 | d->u.config.bNumInterfaces = conf->bNumInterfaces; | |
94 | d->u.config.bConfigurationValue = conf->bConfigurationValue; | |
95 | d->u.config.iConfiguration = conf->iConfiguration; | |
96 | d->u.config.bmAttributes = conf->bmAttributes; | |
97 | d->u.config.bMaxPower = conf->bMaxPower; | |
37fb59d3 GH |
98 | wTotalLength += bLength; |
99 | ||
0a263db1 | 100 | /* handle grouped interfaces if any */ |
6e625fc7 BH |
101 | for (i = 0; i < conf->nif_groups; i++) { |
102 | rc = usb_desc_iface_group(&(conf->if_groups[i]), | |
103 | dest + wTotalLength, | |
104 | len - wTotalLength); | |
105 | if (rc < 0) { | |
106 | return rc; | |
107 | } | |
108 | wTotalLength += rc; | |
109 | } | |
110 | ||
111 | /* handle normal (ungrouped / no IAD) interfaces if any */ | |
fef13fa8 | 112 | for (i = 0; i < conf->nif; i++) { |
37fb59d3 GH |
113 | rc = usb_desc_iface(conf->ifs + i, dest + wTotalLength, len - wTotalLength); |
114 | if (rc < 0) { | |
115 | return rc; | |
116 | } | |
117 | wTotalLength += rc; | |
118 | } | |
119 | ||
0a263db1 GH |
120 | d->u.config.wTotalLength_lo = usb_lo(wTotalLength); |
121 | d->u.config.wTotalLength_hi = usb_hi(wTotalLength); | |
37fb59d3 GH |
122 | return wTotalLength; |
123 | } | |
124 | ||
6e625fc7 BH |
125 | int usb_desc_iface_group(const USBDescIfaceAssoc *iad, uint8_t *dest, |
126 | size_t len) | |
127 | { | |
128 | int pos = 0; | |
129 | int i = 0; | |
130 | ||
131 | /* handle interface association descriptor */ | |
132 | uint8_t bLength = 0x08; | |
133 | ||
134 | if (len < bLength) { | |
135 | return -1; | |
136 | } | |
137 | ||
138 | dest[0x00] = bLength; | |
139 | dest[0x01] = USB_DT_INTERFACE_ASSOC; | |
140 | dest[0x02] = iad->bFirstInterface; | |
141 | dest[0x03] = iad->bInterfaceCount; | |
142 | dest[0x04] = iad->bFunctionClass; | |
143 | dest[0x05] = iad->bFunctionSubClass; | |
144 | dest[0x06] = iad->bFunctionProtocol; | |
145 | dest[0x07] = iad->iFunction; | |
146 | pos += bLength; | |
147 | ||
148 | /* handle associated interfaces in this group */ | |
149 | for (i = 0; i < iad->nif; i++) { | |
150 | int rc = usb_desc_iface(&(iad->ifs[i]), dest + pos, len - pos); | |
151 | if (rc < 0) { | |
152 | return rc; | |
153 | } | |
154 | pos += rc; | |
155 | } | |
156 | ||
157 | return pos; | |
158 | } | |
159 | ||
37fb59d3 GH |
160 | int usb_desc_iface(const USBDescIface *iface, uint8_t *dest, size_t len) |
161 | { | |
162 | uint8_t bLength = 0x09; | |
163 | int i, rc, pos = 0; | |
feafd797 | 164 | USBDescriptor *d = (void *)dest; |
37fb59d3 GH |
165 | |
166 | if (len < bLength) { | |
167 | return -1; | |
168 | } | |
169 | ||
feafd797 GH |
170 | d->bLength = bLength; |
171 | d->bDescriptorType = USB_DT_INTERFACE; | |
172 | ||
173 | d->u.interface.bInterfaceNumber = iface->bInterfaceNumber; | |
174 | d->u.interface.bAlternateSetting = iface->bAlternateSetting; | |
175 | d->u.interface.bNumEndpoints = iface->bNumEndpoints; | |
176 | d->u.interface.bInterfaceClass = iface->bInterfaceClass; | |
177 | d->u.interface.bInterfaceSubClass = iface->bInterfaceSubClass; | |
178 | d->u.interface.bInterfaceProtocol = iface->bInterfaceProtocol; | |
179 | d->u.interface.iInterface = iface->iInterface; | |
37fb59d3 GH |
180 | pos += bLength; |
181 | ||
182 | for (i = 0; i < iface->ndesc; i++) { | |
183 | rc = usb_desc_other(iface->descs + i, dest + pos, len - pos); | |
184 | if (rc < 0) { | |
185 | return rc; | |
186 | } | |
187 | pos += rc; | |
188 | } | |
189 | ||
190 | for (i = 0; i < iface->bNumEndpoints; i++) { | |
191 | rc = usb_desc_endpoint(iface->eps + i, dest + pos, len - pos); | |
192 | if (rc < 0) { | |
193 | return rc; | |
194 | } | |
195 | pos += rc; | |
196 | } | |
197 | ||
198 | return pos; | |
199 | } | |
200 | ||
201 | int usb_desc_endpoint(const USBDescEndpoint *ep, uint8_t *dest, size_t len) | |
202 | { | |
cc5f1395 GH |
203 | uint8_t bLength = ep->is_audio ? 0x09 : 0x07; |
204 | uint8_t extralen = ep->extra ? ep->extra[0] : 0; | |
e36a20d3 | 205 | USBDescriptor *d = (void *)dest; |
37fb59d3 | 206 | |
cc5f1395 | 207 | if (len < bLength + extralen) { |
37fb59d3 GH |
208 | return -1; |
209 | } | |
210 | ||
e36a20d3 GH |
211 | d->bLength = bLength; |
212 | d->bDescriptorType = USB_DT_ENDPOINT; | |
213 | ||
214 | d->u.endpoint.bEndpointAddress = ep->bEndpointAddress; | |
215 | d->u.endpoint.bmAttributes = ep->bmAttributes; | |
216 | d->u.endpoint.wMaxPacketSize_lo = usb_lo(ep->wMaxPacketSize); | |
217 | d->u.endpoint.wMaxPacketSize_hi = usb_hi(ep->wMaxPacketSize); | |
218 | d->u.endpoint.bInterval = ep->bInterval; | |
cc5f1395 | 219 | if (ep->is_audio) { |
e36a20d3 GH |
220 | d->u.endpoint.bRefresh = ep->bRefresh; |
221 | d->u.endpoint.bSynchAddress = ep->bSynchAddress; | |
cc5f1395 GH |
222 | } |
223 | if (ep->extra) { | |
224 | memcpy(dest + bLength, ep->extra, extralen); | |
225 | } | |
37fb59d3 | 226 | |
cc5f1395 | 227 | return bLength + extralen; |
37fb59d3 GH |
228 | } |
229 | ||
230 | int usb_desc_other(const USBDescOther *desc, uint8_t *dest, size_t len) | |
231 | { | |
232 | int bLength = desc->length ? desc->length : desc->data[0]; | |
233 | ||
234 | if (len < bLength) { | |
235 | return -1; | |
236 | } | |
237 | ||
238 | memcpy(dest, desc->data, bLength); | |
239 | return bLength; | |
240 | } | |
241 | ||
132a3f55 GH |
242 | /* ------------------------------------------------------------------ */ |
243 | ||
83a53bbc GH |
244 | static void usb_desc_ep_init(USBDevice *dev) |
245 | { | |
246 | const USBDescIface *iface; | |
247 | int i, e, pid, ep; | |
248 | ||
249 | usb_ep_init(dev); | |
250 | for (i = 0; i < dev->ninterfaces; i++) { | |
251 | iface = dev->ifaces[i]; | |
252 | if (iface == NULL) { | |
253 | continue; | |
254 | } | |
255 | for (e = 0; e < iface->bNumEndpoints; e++) { | |
256 | pid = (iface->eps[e].bEndpointAddress & USB_DIR_IN) ? | |
257 | USB_TOKEN_IN : USB_TOKEN_OUT; | |
258 | ep = iface->eps[e].bEndpointAddress & 0x0f; | |
259 | usb_ep_set_type(dev, pid, ep, iface->eps[e].bmAttributes & 0x03); | |
260 | usb_ep_set_ifnum(dev, pid, ep, iface->bInterfaceNumber); | |
f003397c GH |
261 | usb_ep_set_max_packet_size(dev, pid, ep, |
262 | iface->eps[e].wMaxPacketSize); | |
83a53bbc GH |
263 | } |
264 | } | |
265 | } | |
266 | ||
1de14d43 GH |
267 | static const USBDescIface *usb_desc_find_interface(USBDevice *dev, |
268 | int nif, int alt) | |
269 | { | |
270 | const USBDescIface *iface; | |
271 | int g, i; | |
272 | ||
273 | if (!dev->config) { | |
274 | return NULL; | |
275 | } | |
276 | for (g = 0; g < dev->config->nif_groups; g++) { | |
277 | for (i = 0; i < dev->config->if_groups[g].nif; i++) { | |
278 | iface = &dev->config->if_groups[g].ifs[i]; | |
279 | if (iface->bInterfaceNumber == nif && | |
280 | iface->bAlternateSetting == alt) { | |
281 | return iface; | |
282 | } | |
283 | } | |
284 | } | |
285 | for (i = 0; i < dev->config->nif; i++) { | |
286 | iface = &dev->config->ifs[i]; | |
287 | if (iface->bInterfaceNumber == nif && | |
288 | iface->bAlternateSetting == alt) { | |
289 | return iface; | |
290 | } | |
291 | } | |
292 | return NULL; | |
293 | } | |
294 | ||
295 | static int usb_desc_set_interface(USBDevice *dev, int index, int value) | |
296 | { | |
297 | const USBDescIface *iface; | |
298 | int old; | |
299 | ||
300 | iface = usb_desc_find_interface(dev, index, value); | |
301 | if (iface == NULL) { | |
302 | return -1; | |
303 | } | |
304 | ||
305 | old = dev->altsetting[index]; | |
306 | dev->altsetting[index] = value; | |
307 | dev->ifaces[index] = iface; | |
83a53bbc | 308 | usb_desc_ep_init(dev); |
1de14d43 | 309 | |
62aed765 AL |
310 | if (old != value) { |
311 | usb_device_set_interface(dev, index, old, value); | |
1de14d43 GH |
312 | } |
313 | return 0; | |
314 | } | |
315 | ||
65360511 GH |
316 | static int usb_desc_set_config(USBDevice *dev, int value) |
317 | { | |
318 | int i; | |
319 | ||
320 | if (value == 0) { | |
321 | dev->configuration = 0; | |
322 | dev->ninterfaces = 0; | |
323 | dev->config = NULL; | |
324 | } else { | |
325 | for (i = 0; i < dev->device->bNumConfigurations; i++) { | |
326 | if (dev->device->confs[i].bConfigurationValue == value) { | |
327 | dev->configuration = value; | |
328 | dev->ninterfaces = dev->device->confs[i].bNumInterfaces; | |
329 | dev->config = dev->device->confs + i; | |
1de14d43 | 330 | assert(dev->ninterfaces <= USB_MAX_INTERFACES); |
65360511 GH |
331 | } |
332 | } | |
333 | if (i < dev->device->bNumConfigurations) { | |
334 | return -1; | |
335 | } | |
336 | } | |
1de14d43 GH |
337 | |
338 | for (i = 0; i < dev->ninterfaces; i++) { | |
339 | usb_desc_set_interface(dev, i, 0); | |
340 | } | |
341 | for (; i < USB_MAX_INTERFACES; i++) { | |
342 | dev->altsetting[i] = 0; | |
343 | dev->ifaces[i] = NULL; | |
344 | } | |
345 | ||
65360511 GH |
346 | return 0; |
347 | } | |
348 | ||
32d41919 | 349 | static void usb_desc_setdefaults(USBDevice *dev) |
a980a065 | 350 | { |
62aed765 | 351 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
a980a065 GH |
352 | |
353 | assert(desc != NULL); | |
32d41919 GH |
354 | switch (dev->speed) { |
355 | case USB_SPEED_LOW: | |
356 | case USB_SPEED_FULL: | |
357 | dev->device = desc->full; | |
358 | break; | |
359 | case USB_SPEED_HIGH: | |
360 | dev->device = desc->high; | |
361 | break; | |
6d51b2bb GH |
362 | case USB_SPEED_SUPER: |
363 | dev->device = desc->super; | |
364 | break; | |
32d41919 | 365 | } |
65360511 | 366 | usb_desc_set_config(dev, 0); |
a980a065 GH |
367 | } |
368 | ||
32d41919 GH |
369 | void usb_desc_init(USBDevice *dev) |
370 | { | |
62aed765 | 371 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
ba3f9bfb HG |
372 | |
373 | assert(desc != NULL); | |
32d41919 | 374 | dev->speed = USB_SPEED_FULL; |
ba3f9bfb HG |
375 | dev->speedmask = 0; |
376 | if (desc->full) { | |
377 | dev->speedmask |= USB_SPEED_MASK_FULL; | |
378 | } | |
379 | if (desc->high) { | |
380 | dev->speedmask |= USB_SPEED_MASK_HIGH; | |
381 | } | |
6d51b2bb GH |
382 | if (desc->super) { |
383 | dev->speedmask |= USB_SPEED_MASK_SUPER; | |
384 | } | |
32d41919 GH |
385 | usb_desc_setdefaults(dev); |
386 | } | |
387 | ||
388 | void usb_desc_attach(USBDevice *dev) | |
389 | { | |
62aed765 | 390 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
32d41919 GH |
391 | |
392 | assert(desc != NULL); | |
6d51b2bb GH |
393 | if (desc->super && (dev->port->speedmask & USB_SPEED_MASK_SUPER)) { |
394 | dev->speed = USB_SPEED_SUPER; | |
395 | } else if (desc->high && (dev->port->speedmask & USB_SPEED_MASK_HIGH)) { | |
32d41919 GH |
396 | dev->speed = USB_SPEED_HIGH; |
397 | } else if (desc->full && (dev->port->speedmask & USB_SPEED_MASK_FULL)) { | |
398 | dev->speed = USB_SPEED_FULL; | |
399 | } else { | |
400 | fprintf(stderr, "usb: port/device speed mismatch for \"%s\"\n", | |
62aed765 | 401 | usb_device_get_product_desc(dev)); |
32d41919 GH |
402 | return; |
403 | } | |
404 | usb_desc_setdefaults(dev); | |
405 | } | |
406 | ||
132a3f55 GH |
407 | void usb_desc_set_string(USBDevice *dev, uint8_t index, const char *str) |
408 | { | |
409 | USBDescString *s; | |
410 | ||
411 | QLIST_FOREACH(s, &dev->strings, next) { | |
412 | if (s->index == index) { | |
413 | break; | |
414 | } | |
415 | } | |
416 | if (s == NULL) { | |
7267c094 | 417 | s = g_malloc0(sizeof(*s)); |
132a3f55 GH |
418 | s->index = index; |
419 | QLIST_INSERT_HEAD(&dev->strings, s, next); | |
420 | } | |
7267c094 AL |
421 | g_free(s->str); |
422 | s->str = g_strdup(str); | |
132a3f55 GH |
423 | } |
424 | ||
9d55d1ad GH |
425 | /* |
426 | * This function creates a serial number for a usb device. | |
427 | * The serial number should: | |
428 | * (a) Be unique within the virtual machine. | |
429 | * (b) Be constant, so you don't get a new one each | |
430 | * time the guest is started. | |
431 | * So we are using the physical location to generate a serial number | |
432 | * from it. It has three pieces: First a fixed, device-specific | |
433 | * prefix. Second the device path of the host controller (which is | |
434 | * the pci address in most cases). Third the physical port path. | |
435 | * Results in serial numbers like this: "314159-0000:00:1d.7-3". | |
436 | */ | |
437 | void usb_desc_create_serial(USBDevice *dev) | |
438 | { | |
439 | DeviceState *hcd = dev->qdev.parent_bus->parent; | |
440 | const USBDesc *desc = usb_device_get_usb_desc(dev); | |
441 | int index = desc->id.iSerialNumber; | |
442 | char serial[64]; | |
09e5ab63 | 443 | char *path; |
9d55d1ad GH |
444 | int dst; |
445 | ||
446 | assert(index != 0 && desc->str[index] != NULL); | |
447 | dst = snprintf(serial, sizeof(serial), "%s", desc->str[index]); | |
09e5ab63 AL |
448 | path = qdev_get_dev_path(hcd); |
449 | if (path) { | |
9d55d1ad GH |
450 | dst += snprintf(serial+dst, sizeof(serial)-dst, "-%s", path); |
451 | } | |
452 | dst += snprintf(serial+dst, sizeof(serial)-dst, "-%s", dev->port->path); | |
453 | usb_desc_set_string(dev, index, serial); | |
454 | } | |
455 | ||
132a3f55 GH |
456 | const char *usb_desc_get_string(USBDevice *dev, uint8_t index) |
457 | { | |
458 | USBDescString *s; | |
459 | ||
460 | QLIST_FOREACH(s, &dev->strings, next) { | |
461 | if (s->index == index) { | |
462 | return s->str; | |
463 | } | |
464 | } | |
465 | return NULL; | |
466 | } | |
467 | ||
468 | int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len) | |
37fb59d3 GH |
469 | { |
470 | uint8_t bLength, pos, i; | |
132a3f55 | 471 | const char *str; |
37fb59d3 GH |
472 | |
473 | if (len < 4) { | |
474 | return -1; | |
475 | } | |
476 | ||
477 | if (index == 0) { | |
478 | /* language ids */ | |
479 | dest[0] = 4; | |
480 | dest[1] = USB_DT_STRING; | |
481 | dest[2] = 0x09; | |
482 | dest[3] = 0x04; | |
483 | return 4; | |
484 | } | |
485 | ||
132a3f55 GH |
486 | str = usb_desc_get_string(dev, index); |
487 | if (str == NULL) { | |
62aed765 | 488 | str = usb_device_get_usb_desc(dev)->str[index]; |
132a3f55 GH |
489 | if (str == NULL) { |
490 | return 0; | |
491 | } | |
37fb59d3 | 492 | } |
132a3f55 GH |
493 | |
494 | bLength = strlen(str) * 2 + 2; | |
37fb59d3 GH |
495 | dest[0] = bLength; |
496 | dest[1] = USB_DT_STRING; | |
497 | i = 0; pos = 2; | |
498 | while (pos+1 < bLength && pos+1 < len) { | |
132a3f55 | 499 | dest[pos++] = str[i++]; |
37fb59d3 GH |
500 | dest[pos++] = 0; |
501 | } | |
502 | return pos; | |
503 | } | |
504 | ||
37fb59d3 GH |
505 | int usb_desc_get_descriptor(USBDevice *dev, int value, uint8_t *dest, size_t len) |
506 | { | |
62aed765 | 507 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
25620cba | 508 | const USBDescDevice *other_dev; |
37fb59d3 GH |
509 | uint8_t buf[256]; |
510 | uint8_t type = value >> 8; | |
511 | uint8_t index = value & 0xff; | |
512 | int ret = -1; | |
513 | ||
25620cba | 514 | if (dev->speed == USB_SPEED_HIGH) { |
62aed765 | 515 | other_dev = usb_device_get_usb_desc(dev)->full; |
25620cba | 516 | } else { |
62aed765 | 517 | other_dev = usb_device_get_usb_desc(dev)->high; |
25620cba GH |
518 | } |
519 | ||
37fb59d3 GH |
520 | switch(type) { |
521 | case USB_DT_DEVICE: | |
a980a065 | 522 | ret = usb_desc_device(&desc->id, dev->device, buf, sizeof(buf)); |
37fb59d3 GH |
523 | trace_usb_desc_device(dev->addr, len, ret); |
524 | break; | |
525 | case USB_DT_CONFIG: | |
a980a065 GH |
526 | if (index < dev->device->bNumConfigurations) { |
527 | ret = usb_desc_config(dev->device->confs + index, buf, sizeof(buf)); | |
37fb59d3 GH |
528 | } |
529 | trace_usb_desc_config(dev->addr, index, len, ret); | |
530 | break; | |
531 | case USB_DT_STRING: | |
132a3f55 | 532 | ret = usb_desc_string(dev, index, buf, sizeof(buf)); |
37fb59d3 GH |
533 | trace_usb_desc_string(dev->addr, index, len, ret); |
534 | break; | |
25620cba GH |
535 | |
536 | case USB_DT_DEVICE_QUALIFIER: | |
537 | if (other_dev != NULL) { | |
538 | ret = usb_desc_device_qualifier(other_dev, buf, sizeof(buf)); | |
539 | } | |
540 | trace_usb_desc_device_qualifier(dev->addr, len, ret); | |
541 | break; | |
542 | case USB_DT_OTHER_SPEED_CONFIG: | |
543 | if (other_dev != NULL && index < other_dev->bNumConfigurations) { | |
544 | ret = usb_desc_config(other_dev->confs + index, buf, sizeof(buf)); | |
545 | buf[0x01] = USB_DT_OTHER_SPEED_CONFIG; | |
546 | } | |
547 | trace_usb_desc_other_speed_config(dev->addr, index, len, ret); | |
548 | break; | |
549 | ||
a7fb71d1 GH |
550 | case USB_DT_DEBUG: |
551 | /* ignore silently */ | |
552 | break; | |
553 | ||
37fb59d3 GH |
554 | default: |
555 | fprintf(stderr, "%s: %d unknown type %d (len %zd)\n", __FUNCTION__, | |
556 | dev->addr, type, len); | |
557 | break; | |
558 | } | |
559 | ||
560 | if (ret > 0) { | |
561 | if (ret > len) { | |
562 | ret = len; | |
563 | } | |
564 | memcpy(dest, buf, ret); | |
565 | } | |
566 | return ret; | |
567 | } | |
568 | ||
007fd62f HG |
569 | int usb_desc_handle_control(USBDevice *dev, USBPacket *p, |
570 | int request, int value, int index, int length, uint8_t *data) | |
37fb59d3 | 571 | { |
62aed765 | 572 | const USBDesc *desc = usb_device_get_usb_desc(dev); |
65360511 | 573 | int ret = -1; |
37fb59d3 GH |
574 | |
575 | assert(desc != NULL); | |
576 | switch(request) { | |
41c6abbd GH |
577 | case DeviceOutRequest | USB_REQ_SET_ADDRESS: |
578 | dev->addr = value; | |
579 | trace_usb_set_addr(dev->addr); | |
580 | ret = 0; | |
581 | break; | |
582 | ||
37fb59d3 GH |
583 | case DeviceRequest | USB_REQ_GET_DESCRIPTOR: |
584 | ret = usb_desc_get_descriptor(dev, value, data, length); | |
585 | break; | |
a980a065 GH |
586 | |
587 | case DeviceRequest | USB_REQ_GET_CONFIGURATION: | |
8db36e9d AL |
588 | /* |
589 | * 9.4.2: 0 should be returned if the device is unconfigured, otherwise | |
590 | * the non zero value of bConfigurationValue. | |
591 | */ | |
592 | data[0] = dev->config ? dev->config->bConfigurationValue : 0; | |
a980a065 GH |
593 | ret = 1; |
594 | break; | |
595 | case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: | |
65360511 | 596 | ret = usb_desc_set_config(dev, value); |
a980a065 GH |
597 | trace_usb_set_config(dev->addr, value, ret); |
598 | break; | |
ed5a83dd | 599 | |
8db36e9d AL |
600 | case DeviceRequest | USB_REQ_GET_STATUS: { |
601 | const USBDescConfig *config = dev->config ? | |
602 | dev->config : &dev->device->confs[0]; | |
603 | ||
ed5a83dd | 604 | data[0] = 0; |
8db36e9d AL |
605 | /* |
606 | * Default state: Device behavior when this request is received while | |
607 | * the device is in the Default state is not specified. | |
608 | * We return the same value that a configured device would return if | |
609 | * it used the first configuration. | |
610 | */ | |
611 | if (config->bmAttributes & 0x40) { | |
ed5a83dd GH |
612 | data[0] |= 1 << USB_DEVICE_SELF_POWERED; |
613 | } | |
614 | if (dev->remote_wakeup) { | |
615 | data[0] |= 1 << USB_DEVICE_REMOTE_WAKEUP; | |
616 | } | |
617 | data[1] = 0x00; | |
618 | ret = 2; | |
619 | break; | |
8db36e9d | 620 | } |
ed5a83dd GH |
621 | case DeviceOutRequest | USB_REQ_CLEAR_FEATURE: |
622 | if (value == USB_DEVICE_REMOTE_WAKEUP) { | |
623 | dev->remote_wakeup = 0; | |
624 | ret = 0; | |
625 | } | |
626 | trace_usb_clear_device_feature(dev->addr, value, ret); | |
627 | break; | |
628 | case DeviceOutRequest | USB_REQ_SET_FEATURE: | |
629 | if (value == USB_DEVICE_REMOTE_WAKEUP) { | |
630 | dev->remote_wakeup = 1; | |
631 | ret = 0; | |
632 | } | |
633 | trace_usb_set_device_feature(dev->addr, value, ret); | |
634 | break; | |
1de14d43 GH |
635 | |
636 | case InterfaceRequest | USB_REQ_GET_INTERFACE: | |
637 | if (index < 0 || index >= dev->ninterfaces) { | |
638 | break; | |
639 | } | |
640 | data[0] = dev->altsetting[index]; | |
641 | ret = 1; | |
642 | break; | |
643 | case InterfaceOutRequest | USB_REQ_SET_INTERFACE: | |
644 | ret = usb_desc_set_interface(dev, index, value); | |
645 | trace_usb_set_interface(dev->addr, index, value, ret); | |
646 | break; | |
647 | ||
37fb59d3 GH |
648 | } |
649 | return ret; | |
650 | } |