5 /* ------------------------------------------------------------------ */
7 static uint8_t usb_lo(uint16_t val)
12 static uint8_t usb_hi(uint16_t val)
14 return (val >> 8) & 0xff;
17 int usb_desc_device(const USBDescID *id, const USBDescDevice *dev,
18 uint8_t *dest, size_t len)
20 uint8_t bLength = 0x12;
27 dest[0x01] = USB_DT_DEVICE;
29 dest[0x02] = usb_lo(dev->bcdUSB);
30 dest[0x03] = usb_hi(dev->bcdUSB);
31 dest[0x04] = dev->bDeviceClass;
32 dest[0x05] = dev->bDeviceSubClass;
33 dest[0x06] = dev->bDeviceProtocol;
34 dest[0x07] = dev->bMaxPacketSize0;
36 dest[0x08] = usb_lo(id->idVendor);
37 dest[0x09] = usb_hi(id->idVendor);
38 dest[0x0a] = usb_lo(id->idProduct);
39 dest[0x0b] = usb_hi(id->idProduct);
40 dest[0x0c] = usb_lo(id->bcdDevice);
41 dest[0x0d] = usb_hi(id->bcdDevice);
42 dest[0x0e] = id->iManufacturer;
43 dest[0x0f] = id->iProduct;
44 dest[0x10] = id->iSerialNumber;
46 dest[0x11] = dev->bNumConfigurations;
51 int usb_desc_device_qualifier(const USBDescDevice *dev,
52 uint8_t *dest, size_t len)
54 uint8_t bLength = 0x0a;
61 dest[0x01] = USB_DT_DEVICE_QUALIFIER;
63 dest[0x02] = usb_lo(dev->bcdUSB);
64 dest[0x03] = usb_hi(dev->bcdUSB);
65 dest[0x04] = dev->bDeviceClass;
66 dest[0x05] = dev->bDeviceSubClass;
67 dest[0x06] = dev->bDeviceProtocol;
68 dest[0x07] = dev->bMaxPacketSize0;
69 dest[0x08] = dev->bNumConfigurations;
70 dest[0x09] = 0; /* reserved */
75 int usb_desc_config(const USBDescConfig *conf, uint8_t *dest, size_t len)
77 uint8_t bLength = 0x09;
78 uint16_t wTotalLength = 0;
86 dest[0x01] = USB_DT_CONFIG;
87 dest[0x04] = conf->bNumInterfaces;
88 dest[0x05] = conf->bConfigurationValue;
89 dest[0x06] = conf->iConfiguration;
90 dest[0x07] = conf->bmAttributes;
91 dest[0x08] = conf->bMaxPower;
92 wTotalLength += bLength;
94 /* handle grouped interfaces if any*/
95 for (i = 0; i < conf->nif_groups; i++) {
96 rc = usb_desc_iface_group(&(conf->if_groups[i]),
105 /* handle normal (ungrouped / no IAD) interfaces if any */
106 for (i = 0; i < conf->nif; i++) {
107 rc = usb_desc_iface(conf->ifs + i, dest + wTotalLength, len - wTotalLength);
114 dest[0x02] = usb_lo(wTotalLength);
115 dest[0x03] = usb_hi(wTotalLength);
119 int usb_desc_iface_group(const USBDescIfaceAssoc *iad, uint8_t *dest,
125 /* handle interface association descriptor */
126 uint8_t bLength = 0x08;
132 dest[0x00] = bLength;
133 dest[0x01] = USB_DT_INTERFACE_ASSOC;
134 dest[0x02] = iad->bFirstInterface;
135 dest[0x03] = iad->bInterfaceCount;
136 dest[0x04] = iad->bFunctionClass;
137 dest[0x05] = iad->bFunctionSubClass;
138 dest[0x06] = iad->bFunctionProtocol;
139 dest[0x07] = iad->iFunction;
142 /* handle associated interfaces in this group */
143 for (i = 0; i < iad->nif; i++) {
144 int rc = usb_desc_iface(&(iad->ifs[i]), dest + pos, len - pos);
154 int usb_desc_iface(const USBDescIface *iface, uint8_t *dest, size_t len)
156 uint8_t bLength = 0x09;
163 dest[0x00] = bLength;
164 dest[0x01] = USB_DT_INTERFACE;
165 dest[0x02] = iface->bInterfaceNumber;
166 dest[0x03] = iface->bAlternateSetting;
167 dest[0x04] = iface->bNumEndpoints;
168 dest[0x05] = iface->bInterfaceClass;
169 dest[0x06] = iface->bInterfaceSubClass;
170 dest[0x07] = iface->bInterfaceProtocol;
171 dest[0x08] = iface->iInterface;
174 for (i = 0; i < iface->ndesc; i++) {
175 rc = usb_desc_other(iface->descs + i, dest + pos, len - pos);
182 for (i = 0; i < iface->bNumEndpoints; i++) {
183 rc = usb_desc_endpoint(iface->eps + i, dest + pos, len - pos);
193 int usb_desc_endpoint(const USBDescEndpoint *ep, uint8_t *dest, size_t len)
195 uint8_t bLength = ep->is_audio ? 0x09 : 0x07;
196 uint8_t extralen = ep->extra ? ep->extra[0] : 0;
198 if (len < bLength + extralen) {
202 dest[0x00] = bLength;
203 dest[0x01] = USB_DT_ENDPOINT;
204 dest[0x02] = ep->bEndpointAddress;
205 dest[0x03] = ep->bmAttributes;
206 dest[0x04] = usb_lo(ep->wMaxPacketSize);
207 dest[0x05] = usb_hi(ep->wMaxPacketSize);
208 dest[0x06] = ep->bInterval;
210 dest[0x07] = ep->bRefresh;
211 dest[0x08] = ep->bSynchAddress;
214 memcpy(dest + bLength, ep->extra, extralen);
217 return bLength + extralen;
220 int usb_desc_other(const USBDescOther *desc, uint8_t *dest, size_t len)
222 int bLength = desc->length ? desc->length : desc->data[0];
228 memcpy(dest, desc->data, bLength);
232 /* ------------------------------------------------------------------ */
234 static const USBDescIface *usb_desc_find_interface(USBDevice *dev,
237 const USBDescIface *iface;
243 for (g = 0; g < dev->config->nif_groups; g++) {
244 for (i = 0; i < dev->config->if_groups[g].nif; i++) {
245 iface = &dev->config->if_groups[g].ifs[i];
246 if (iface->bInterfaceNumber == nif &&
247 iface->bAlternateSetting == alt) {
252 for (i = 0; i < dev->config->nif; i++) {
253 iface = &dev->config->ifs[i];
254 if (iface->bInterfaceNumber == nif &&
255 iface->bAlternateSetting == alt) {
262 static int usb_desc_set_interface(USBDevice *dev, int index, int value)
264 const USBDescIface *iface;
267 iface = usb_desc_find_interface(dev, index, value);
272 old = dev->altsetting[index];
273 dev->altsetting[index] = value;
274 dev->ifaces[index] = iface;
276 if (dev->info->set_interface && old != value) {
277 dev->info->set_interface(dev, index, old, value);
282 static int usb_desc_set_config(USBDevice *dev, int value)
287 dev->configuration = 0;
288 dev->ninterfaces = 0;
291 for (i = 0; i < dev->device->bNumConfigurations; i++) {
292 if (dev->device->confs[i].bConfigurationValue == value) {
293 dev->configuration = value;
294 dev->ninterfaces = dev->device->confs[i].bNumInterfaces;
295 dev->config = dev->device->confs + i;
296 assert(dev->ninterfaces <= USB_MAX_INTERFACES);
299 if (i < dev->device->bNumConfigurations) {
304 for (i = 0; i < dev->ninterfaces; i++) {
305 usb_desc_set_interface(dev, i, 0);
307 for (; i < USB_MAX_INTERFACES; i++) {
308 dev->altsetting[i] = 0;
309 dev->ifaces[i] = NULL;
315 static void usb_desc_setdefaults(USBDevice *dev)
317 const USBDesc *desc = dev->info->usb_desc;
319 assert(desc != NULL);
320 switch (dev->speed) {
323 dev->device = desc->full;
326 dev->device = desc->high;
329 usb_desc_set_config(dev, 0);
332 void usb_desc_init(USBDevice *dev)
334 const USBDesc *desc = dev->info->usb_desc;
336 assert(desc != NULL);
337 dev->speed = USB_SPEED_FULL;
340 dev->speedmask |= USB_SPEED_MASK_FULL;
343 dev->speedmask |= USB_SPEED_MASK_HIGH;
345 usb_desc_setdefaults(dev);
348 void usb_desc_attach(USBDevice *dev)
350 const USBDesc *desc = dev->info->usb_desc;
352 assert(desc != NULL);
353 if (desc->high && (dev->port->speedmask & USB_SPEED_MASK_HIGH)) {
354 dev->speed = USB_SPEED_HIGH;
355 } else if (desc->full && (dev->port->speedmask & USB_SPEED_MASK_FULL)) {
356 dev->speed = USB_SPEED_FULL;
358 fprintf(stderr, "usb: port/device speed mismatch for \"%s\"\n",
359 dev->info->product_desc);
362 usb_desc_setdefaults(dev);
365 void usb_desc_set_string(USBDevice *dev, uint8_t index, const char *str)
369 QLIST_FOREACH(s, &dev->strings, next) {
370 if (s->index == index) {
375 s = g_malloc0(sizeof(*s));
377 QLIST_INSERT_HEAD(&dev->strings, s, next);
380 s->str = g_strdup(str);
383 const char *usb_desc_get_string(USBDevice *dev, uint8_t index)
387 QLIST_FOREACH(s, &dev->strings, next) {
388 if (s->index == index) {
395 int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len)
397 uint8_t bLength, pos, i;
407 dest[1] = USB_DT_STRING;
413 str = usb_desc_get_string(dev, index);
415 str = dev->info->usb_desc->str[index];
421 bLength = strlen(str) * 2 + 2;
423 dest[1] = USB_DT_STRING;
425 while (pos+1 < bLength && pos+1 < len) {
426 dest[pos++] = str[i++];
432 int usb_desc_get_descriptor(USBDevice *dev, int value, uint8_t *dest, size_t len)
434 const USBDesc *desc = dev->info->usb_desc;
435 const USBDescDevice *other_dev;
437 uint8_t type = value >> 8;
438 uint8_t index = value & 0xff;
441 if (dev->speed == USB_SPEED_HIGH) {
442 other_dev = dev->info->usb_desc->full;
444 other_dev = dev->info->usb_desc->high;
449 ret = usb_desc_device(&desc->id, dev->device, buf, sizeof(buf));
450 trace_usb_desc_device(dev->addr, len, ret);
453 if (index < dev->device->bNumConfigurations) {
454 ret = usb_desc_config(dev->device->confs + index, buf, sizeof(buf));
456 trace_usb_desc_config(dev->addr, index, len, ret);
459 ret = usb_desc_string(dev, index, buf, sizeof(buf));
460 trace_usb_desc_string(dev->addr, index, len, ret);
463 case USB_DT_DEVICE_QUALIFIER:
464 if (other_dev != NULL) {
465 ret = usb_desc_device_qualifier(other_dev, buf, sizeof(buf));
467 trace_usb_desc_device_qualifier(dev->addr, len, ret);
469 case USB_DT_OTHER_SPEED_CONFIG:
470 if (other_dev != NULL && index < other_dev->bNumConfigurations) {
471 ret = usb_desc_config(other_dev->confs + index, buf, sizeof(buf));
472 buf[0x01] = USB_DT_OTHER_SPEED_CONFIG;
474 trace_usb_desc_other_speed_config(dev->addr, index, len, ret);
478 /* ignore silently */
482 fprintf(stderr, "%s: %d unknown type %d (len %zd)\n", __FUNCTION__,
483 dev->addr, type, len);
491 memcpy(dest, buf, ret);
496 int usb_desc_handle_control(USBDevice *dev, USBPacket *p,
497 int request, int value, int index, int length, uint8_t *data)
499 const USBDesc *desc = dev->info->usb_desc;
502 assert(desc != NULL);
504 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
506 trace_usb_set_addr(dev->addr);
510 case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
511 ret = usb_desc_get_descriptor(dev, value, data, length);
514 case DeviceRequest | USB_REQ_GET_CONFIGURATION:
515 data[0] = dev->config->bConfigurationValue;
518 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
519 ret = usb_desc_set_config(dev, value);
520 trace_usb_set_config(dev->addr, value, ret);
523 case DeviceRequest | USB_REQ_GET_STATUS:
525 if (dev->config->bmAttributes & 0x40) {
526 data[0] |= 1 << USB_DEVICE_SELF_POWERED;
528 if (dev->remote_wakeup) {
529 data[0] |= 1 << USB_DEVICE_REMOTE_WAKEUP;
534 case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
535 if (value == USB_DEVICE_REMOTE_WAKEUP) {
536 dev->remote_wakeup = 0;
539 trace_usb_clear_device_feature(dev->addr, value, ret);
541 case DeviceOutRequest | USB_REQ_SET_FEATURE:
542 if (value == USB_DEVICE_REMOTE_WAKEUP) {
543 dev->remote_wakeup = 1;
546 trace_usb_set_device_feature(dev->addr, value, ret);
549 case InterfaceRequest | USB_REQ_GET_INTERFACE:
550 if (index < 0 || index >= dev->ninterfaces) {
553 data[0] = dev->altsetting[index];
556 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
557 ret = usb_desc_set_interface(dev, index, value);
558 trace_usb_set_interface(dev->addr, index, value, ret);