root / hw / usb / desc.c @ a8aec295
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| 1 |
#include <ctype.h> |
|---|---|
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|
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#include "hw/usb.h" |
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#include "hw/usb/desc.h" |
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#include "trace.h" |
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|
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/* ------------------------------------------------------------------ */
|
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|
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static uint8_t usb_lo(uint16_t val)
|
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{
|
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return val & 0xff; |
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} |
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|
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static uint8_t usb_hi(uint16_t val)
|
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{
|
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return (val >> 8) & 0xff; |
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} |
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|
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int usb_desc_device(const USBDescID *id, const USBDescDevice *dev, |
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uint8_t *dest, size_t len) |
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{
|
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uint8_t bLength = 0x12;
|
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USBDescriptor *d = (void *)dest;
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|
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if (len < bLength) {
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return -1; |
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} |
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|
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d->bLength = bLength; |
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d->bDescriptorType = USB_DT_DEVICE; |
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|
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d->u.device.bcdUSB_lo = usb_lo(dev->bcdUSB); |
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d->u.device.bcdUSB_hi = usb_hi(dev->bcdUSB); |
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d->u.device.bDeviceClass = dev->bDeviceClass; |
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d->u.device.bDeviceSubClass = dev->bDeviceSubClass; |
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d->u.device.bDeviceProtocol = dev->bDeviceProtocol; |
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d->u.device.bMaxPacketSize0 = dev->bMaxPacketSize0; |
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|
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d->u.device.idVendor_lo = usb_lo(id->idVendor); |
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d->u.device.idVendor_hi = usb_hi(id->idVendor); |
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d->u.device.idProduct_lo = usb_lo(id->idProduct); |
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d->u.device.idProduct_hi = usb_hi(id->idProduct); |
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d->u.device.bcdDevice_lo = usb_lo(id->bcdDevice); |
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d->u.device.bcdDevice_hi = usb_hi(id->bcdDevice); |
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d->u.device.iManufacturer = id->iManufacturer; |
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d->u.device.iProduct = id->iProduct; |
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d->u.device.iSerialNumber = id->iSerialNumber; |
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|
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d->u.device.bNumConfigurations = dev->bNumConfigurations; |
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|
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return bLength;
|
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} |
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|
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int usb_desc_device_qualifier(const USBDescDevice *dev, |
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uint8_t *dest, size_t len) |
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{
|
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uint8_t bLength = 0x0a;
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USBDescriptor *d = (void *)dest;
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|
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if (len < bLength) {
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return -1; |
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} |
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|
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d->bLength = bLength; |
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d->bDescriptorType = USB_DT_DEVICE_QUALIFIER; |
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|
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d->u.device_qualifier.bcdUSB_lo = usb_lo(dev->bcdUSB); |
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d->u.device_qualifier.bcdUSB_hi = usb_hi(dev->bcdUSB); |
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d->u.device_qualifier.bDeviceClass = dev->bDeviceClass; |
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d->u.device_qualifier.bDeviceSubClass = dev->bDeviceSubClass; |
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d->u.device_qualifier.bDeviceProtocol = dev->bDeviceProtocol; |
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d->u.device_qualifier.bMaxPacketSize0 = dev->bMaxPacketSize0; |
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d->u.device_qualifier.bNumConfigurations = dev->bNumConfigurations; |
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d->u.device_qualifier.bReserved = 0;
|
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|
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return bLength;
|
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} |
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|
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int usb_desc_config(const USBDescConfig *conf, int flags, |
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uint8_t *dest, size_t len) |
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{
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uint8_t bLength = 0x09;
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uint16_t wTotalLength = 0;
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USBDescriptor *d = (void *)dest;
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int i, rc;
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|
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if (len < bLength) {
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return -1; |
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} |
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|
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d->bLength = bLength; |
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d->bDescriptorType = USB_DT_CONFIG; |
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|
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d->u.config.bNumInterfaces = conf->bNumInterfaces; |
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d->u.config.bConfigurationValue = conf->bConfigurationValue; |
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d->u.config.iConfiguration = conf->iConfiguration; |
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d->u.config.bmAttributes = conf->bmAttributes; |
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d->u.config.bMaxPower = conf->bMaxPower; |
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wTotalLength += bLength; |
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|
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/* handle grouped interfaces if any */
|
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for (i = 0; i < conf->nif_groups; i++) { |
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rc = usb_desc_iface_group(&(conf->if_groups[i]), flags, |
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dest + wTotalLength, |
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len - wTotalLength); |
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if (rc < 0) { |
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return rc;
|
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} |
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wTotalLength += rc; |
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} |
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|
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/* handle normal (ungrouped / no IAD) interfaces if any */
|
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for (i = 0; i < conf->nif; i++) { |
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rc = usb_desc_iface(conf->ifs + i, flags, |
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dest + wTotalLength, len - wTotalLength); |
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if (rc < 0) { |
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return rc;
|
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} |
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wTotalLength += rc; |
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} |
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|
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d->u.config.wTotalLength_lo = usb_lo(wTotalLength); |
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d->u.config.wTotalLength_hi = usb_hi(wTotalLength); |
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return wTotalLength;
|
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} |
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|
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int usb_desc_iface_group(const USBDescIfaceAssoc *iad, int flags, |
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uint8_t *dest, size_t len) |
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{
|
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int pos = 0; |
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int i = 0; |
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|
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/* handle interface association descriptor */
|
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uint8_t bLength = 0x08;
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|
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if (len < bLength) {
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return -1; |
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} |
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|
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dest[0x00] = bLength;
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dest[0x01] = USB_DT_INTERFACE_ASSOC;
|
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dest[0x02] = iad->bFirstInterface;
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dest[0x03] = iad->bInterfaceCount;
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dest[0x04] = iad->bFunctionClass;
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dest[0x05] = iad->bFunctionSubClass;
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dest[0x06] = iad->bFunctionProtocol;
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dest[0x07] = iad->iFunction;
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pos += bLength; |
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|
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/* handle associated interfaces in this group */
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for (i = 0; i < iad->nif; i++) { |
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int rc = usb_desc_iface(&(iad->ifs[i]), flags, dest + pos, len - pos);
|
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if (rc < 0) { |
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return rc;
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} |
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pos += rc; |
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} |
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|
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return pos;
|
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} |
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|
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int usb_desc_iface(const USBDescIface *iface, int flags, |
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uint8_t *dest, size_t len) |
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{
|
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uint8_t bLength = 0x09;
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int i, rc, pos = 0; |
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USBDescriptor *d = (void *)dest;
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|
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if (len < bLength) {
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return -1; |
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} |
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|
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d->bLength = bLength; |
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d->bDescriptorType = USB_DT_INTERFACE; |
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|
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d->u.interface.bInterfaceNumber = iface->bInterfaceNumber; |
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d->u.interface.bAlternateSetting = iface->bAlternateSetting; |
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d->u.interface.bNumEndpoints = iface->bNumEndpoints; |
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d->u.interface.bInterfaceClass = iface->bInterfaceClass; |
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d->u.interface.bInterfaceSubClass = iface->bInterfaceSubClass; |
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d->u.interface.bInterfaceProtocol = iface->bInterfaceProtocol; |
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d->u.interface.iInterface = iface->iInterface; |
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pos += bLength; |
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|
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for (i = 0; i < iface->ndesc; i++) { |
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rc = usb_desc_other(iface->descs + i, dest + pos, len - pos); |
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if (rc < 0) { |
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return rc;
|
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} |
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pos += rc; |
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} |
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|
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for (i = 0; i < iface->bNumEndpoints; i++) { |
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rc = usb_desc_endpoint(iface->eps + i, flags, dest + pos, len - pos); |
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if (rc < 0) { |
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return rc;
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} |
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pos += rc; |
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} |
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|
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return pos;
|
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} |
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|
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int usb_desc_endpoint(const USBDescEndpoint *ep, int flags, |
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uint8_t *dest, size_t len) |
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{
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uint8_t bLength = ep->is_audio ? 0x09 : 0x07; |
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uint8_t extralen = ep->extra ? ep->extra[0] : 0; |
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uint8_t superlen = (flags & USB_DESC_FLAG_SUPER) ? 0x06 : 0; |
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USBDescriptor *d = (void *)dest;
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|
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if (len < bLength + extralen + superlen) {
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return -1; |
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} |
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|
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d->bLength = bLength; |
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d->bDescriptorType = USB_DT_ENDPOINT; |
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|
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d->u.endpoint.bEndpointAddress = ep->bEndpointAddress; |
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d->u.endpoint.bmAttributes = ep->bmAttributes; |
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d->u.endpoint.wMaxPacketSize_lo = usb_lo(ep->wMaxPacketSize); |
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d->u.endpoint.wMaxPacketSize_hi = usb_hi(ep->wMaxPacketSize); |
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d->u.endpoint.bInterval = ep->bInterval; |
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if (ep->is_audio) {
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d->u.endpoint.bRefresh = ep->bRefresh; |
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d->u.endpoint.bSynchAddress = ep->bSynchAddress; |
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} |
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|
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if (superlen) {
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USBDescriptor *d = (void *)(dest + bLength);
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|
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d->bLength = 0x06;
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d->bDescriptorType = USB_DT_ENDPOINT_COMPANION; |
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|
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d->u.super_endpoint.bMaxBurst = ep->bMaxBurst; |
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d->u.super_endpoint.bmAttributes = ep->bmAttributes_super; |
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d->u.super_endpoint.wBytesPerInterval_lo = |
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usb_lo(ep->wBytesPerInterval); |
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d->u.super_endpoint.wBytesPerInterval_hi = |
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usb_hi(ep->wBytesPerInterval); |
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} |
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|
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if (ep->extra) {
|
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memcpy(dest + bLength + superlen, ep->extra, extralen); |
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} |
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|
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return bLength + extralen + superlen;
|
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} |
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|
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int usb_desc_other(const USBDescOther *desc, uint8_t *dest, size_t len) |
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{
|
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int bLength = desc->length ? desc->length : desc->data[0]; |
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|
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if (len < bLength) {
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return -1; |
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} |
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|
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memcpy(dest, desc->data, bLength); |
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return bLength;
|
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} |
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|
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static int usb_desc_cap_usb2_ext(const USBDesc *desc, uint8_t *dest, size_t len) |
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{
|
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uint8_t bLength = 0x07;
|
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USBDescriptor *d = (void *)dest;
|
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|
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if (len < bLength) {
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return -1; |
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} |
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|
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d->bLength = bLength; |
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d->bDescriptorType = USB_DT_DEVICE_CAPABILITY; |
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d->u.cap.bDevCapabilityType = USB_DEV_CAP_USB2_EXT; |
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|
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d->u.cap.u.usb2_ext.bmAttributes_1 = (1 << 1); /* LPM */ |
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d->u.cap.u.usb2_ext.bmAttributes_2 = 0;
|
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d->u.cap.u.usb2_ext.bmAttributes_3 = 0;
|
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d->u.cap.u.usb2_ext.bmAttributes_4 = 0;
|
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|
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return bLength;
|
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} |
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|
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static int usb_desc_cap_super(const USBDesc *desc, uint8_t *dest, size_t len) |
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{
|
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uint8_t bLength = 0x0a;
|
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USBDescriptor *d = (void *)dest;
|
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|
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if (len < bLength) {
|
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return -1; |
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} |
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|
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d->bLength = bLength; |
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d->bDescriptorType = USB_DT_DEVICE_CAPABILITY; |
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d->u.cap.bDevCapabilityType = USB_DEV_CAP_SUPERSPEED; |
| 295 |
|
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d->u.cap.u.super.bmAttributes = 0;
|
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d->u.cap.u.super.wSpeedsSupported_lo = 0;
|
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d->u.cap.u.super.wSpeedsSupported_hi = 0;
|
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d->u.cap.u.super.bFunctionalitySupport = 0;
|
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d->u.cap.u.super.bU1DevExitLat = 0x0a;
|
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d->u.cap.u.super.wU2DevExitLat_lo = 0x20;
|
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d->u.cap.u.super.wU2DevExitLat_hi = 0;
|
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|
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if (desc->full) {
|
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d->u.cap.u.super.wSpeedsSupported_lo |= (1 << 1); |
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d->u.cap.u.super.bFunctionalitySupport = 1;
|
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} |
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if (desc->high) {
|
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d->u.cap.u.super.wSpeedsSupported_lo |= (1 << 2); |
| 310 |
if (!d->u.cap.u.super.bFunctionalitySupport) {
|
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d->u.cap.u.super.bFunctionalitySupport = 2;
|
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} |
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} |
| 314 |
if (desc->super) {
|
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d->u.cap.u.super.wSpeedsSupported_lo |= (1 << 3); |
| 316 |
if (!d->u.cap.u.super.bFunctionalitySupport) {
|
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d->u.cap.u.super.bFunctionalitySupport = 3;
|
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} |
| 319 |
} |
| 320 |
|
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return bLength;
|
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} |
| 323 |
|
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static int usb_desc_bos(const USBDesc *desc, uint8_t *dest, size_t len) |
| 325 |
{
|
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uint8_t bLength = 0x05;
|
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uint16_t wTotalLength = 0;
|
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uint8_t bNumDeviceCaps = 0;
|
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USBDescriptor *d = (void *)dest;
|
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int rc;
|
| 331 |
|
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if (len < bLength) {
|
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return -1; |
| 334 |
} |
| 335 |
|
| 336 |
d->bLength = bLength; |
| 337 |
d->bDescriptorType = USB_DT_BOS; |
| 338 |
|
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wTotalLength += bLength; |
| 340 |
|
| 341 |
if (desc->high != NULL) { |
| 342 |
rc = usb_desc_cap_usb2_ext(desc, dest + wTotalLength, |
| 343 |
len - wTotalLength); |
| 344 |
if (rc < 0) { |
| 345 |
return rc;
|
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} |
| 347 |
wTotalLength += rc; |
| 348 |
bNumDeviceCaps++; |
| 349 |
} |
| 350 |
|
| 351 |
if (desc->super != NULL) { |
| 352 |
rc = usb_desc_cap_super(desc, dest + wTotalLength, |
| 353 |
len - wTotalLength); |
| 354 |
if (rc < 0) { |
| 355 |
return rc;
|
| 356 |
} |
| 357 |
wTotalLength += rc; |
| 358 |
bNumDeviceCaps++; |
| 359 |
} |
| 360 |
|
| 361 |
d->u.bos.wTotalLength_lo = usb_lo(wTotalLength); |
| 362 |
d->u.bos.wTotalLength_hi = usb_hi(wTotalLength); |
| 363 |
d->u.bos.bNumDeviceCaps = bNumDeviceCaps; |
| 364 |
return wTotalLength;
|
| 365 |
} |
| 366 |
|
| 367 |
/* ------------------------------------------------------------------ */
|
| 368 |
|
| 369 |
static void usb_desc_ep_init(USBDevice *dev) |
| 370 |
{
|
| 371 |
const USBDescIface *iface;
|
| 372 |
int i, e, pid, ep;
|
| 373 |
|
| 374 |
usb_ep_init(dev); |
| 375 |
for (i = 0; i < dev->ninterfaces; i++) { |
| 376 |
iface = dev->ifaces[i]; |
| 377 |
if (iface == NULL) { |
| 378 |
continue;
|
| 379 |
} |
| 380 |
for (e = 0; e < iface->bNumEndpoints; e++) { |
| 381 |
pid = (iface->eps[e].bEndpointAddress & USB_DIR_IN) ? |
| 382 |
USB_TOKEN_IN : USB_TOKEN_OUT; |
| 383 |
ep = iface->eps[e].bEndpointAddress & 0x0f;
|
| 384 |
usb_ep_set_type(dev, pid, ep, iface->eps[e].bmAttributes & 0x03);
|
| 385 |
usb_ep_set_ifnum(dev, pid, ep, iface->bInterfaceNumber); |
| 386 |
usb_ep_set_max_packet_size(dev, pid, ep, |
| 387 |
iface->eps[e].wMaxPacketSize); |
| 388 |
} |
| 389 |
} |
| 390 |
} |
| 391 |
|
| 392 |
static const USBDescIface *usb_desc_find_interface(USBDevice *dev, |
| 393 |
int nif, int alt) |
| 394 |
{
|
| 395 |
const USBDescIface *iface;
|
| 396 |
int g, i;
|
| 397 |
|
| 398 |
if (!dev->config) {
|
| 399 |
return NULL; |
| 400 |
} |
| 401 |
for (g = 0; g < dev->config->nif_groups; g++) { |
| 402 |
for (i = 0; i < dev->config->if_groups[g].nif; i++) { |
| 403 |
iface = &dev->config->if_groups[g].ifs[i]; |
| 404 |
if (iface->bInterfaceNumber == nif &&
|
| 405 |
iface->bAlternateSetting == alt) {
|
| 406 |
return iface;
|
| 407 |
} |
| 408 |
} |
| 409 |
} |
| 410 |
for (i = 0; i < dev->config->nif; i++) { |
| 411 |
iface = &dev->config->ifs[i]; |
| 412 |
if (iface->bInterfaceNumber == nif &&
|
| 413 |
iface->bAlternateSetting == alt) {
|
| 414 |
return iface;
|
| 415 |
} |
| 416 |
} |
| 417 |
return NULL; |
| 418 |
} |
| 419 |
|
| 420 |
static int usb_desc_set_interface(USBDevice *dev, int index, int value) |
| 421 |
{
|
| 422 |
const USBDescIface *iface;
|
| 423 |
int old;
|
| 424 |
|
| 425 |
iface = usb_desc_find_interface(dev, index, value); |
| 426 |
if (iface == NULL) { |
| 427 |
return -1; |
| 428 |
} |
| 429 |
|
| 430 |
old = dev->altsetting[index]; |
| 431 |
dev->altsetting[index] = value; |
| 432 |
dev->ifaces[index] = iface; |
| 433 |
usb_desc_ep_init(dev); |
| 434 |
|
| 435 |
if (old != value) {
|
| 436 |
usb_device_set_interface(dev, index, old, value); |
| 437 |
} |
| 438 |
return 0; |
| 439 |
} |
| 440 |
|
| 441 |
static int usb_desc_set_config(USBDevice *dev, int value) |
| 442 |
{
|
| 443 |
int i;
|
| 444 |
|
| 445 |
if (value == 0) { |
| 446 |
dev->configuration = 0;
|
| 447 |
dev->ninterfaces = 0;
|
| 448 |
dev->config = NULL;
|
| 449 |
} else {
|
| 450 |
for (i = 0; i < dev->device->bNumConfigurations; i++) { |
| 451 |
if (dev->device->confs[i].bConfigurationValue == value) {
|
| 452 |
dev->configuration = value; |
| 453 |
dev->ninterfaces = dev->device->confs[i].bNumInterfaces; |
| 454 |
dev->config = dev->device->confs + i; |
| 455 |
assert(dev->ninterfaces <= USB_MAX_INTERFACES); |
| 456 |
} |
| 457 |
} |
| 458 |
if (i < dev->device->bNumConfigurations) {
|
| 459 |
return -1; |
| 460 |
} |
| 461 |
} |
| 462 |
|
| 463 |
for (i = 0; i < dev->ninterfaces; i++) { |
| 464 |
usb_desc_set_interface(dev, i, 0);
|
| 465 |
} |
| 466 |
for (; i < USB_MAX_INTERFACES; i++) {
|
| 467 |
dev->altsetting[i] = 0;
|
| 468 |
dev->ifaces[i] = NULL;
|
| 469 |
} |
| 470 |
|
| 471 |
return 0; |
| 472 |
} |
| 473 |
|
| 474 |
static void usb_desc_setdefaults(USBDevice *dev) |
| 475 |
{
|
| 476 |
const USBDesc *desc = usb_device_get_usb_desc(dev);
|
| 477 |
|
| 478 |
assert(desc != NULL);
|
| 479 |
switch (dev->speed) {
|
| 480 |
case USB_SPEED_LOW:
|
| 481 |
case USB_SPEED_FULL:
|
| 482 |
dev->device = desc->full; |
| 483 |
break;
|
| 484 |
case USB_SPEED_HIGH:
|
| 485 |
dev->device = desc->high; |
| 486 |
break;
|
| 487 |
case USB_SPEED_SUPER:
|
| 488 |
dev->device = desc->super; |
| 489 |
break;
|
| 490 |
} |
| 491 |
usb_desc_set_config(dev, 0);
|
| 492 |
} |
| 493 |
|
| 494 |
void usb_desc_init(USBDevice *dev)
|
| 495 |
{
|
| 496 |
const USBDesc *desc = usb_device_get_usb_desc(dev);
|
| 497 |
|
| 498 |
assert(desc != NULL);
|
| 499 |
dev->speed = USB_SPEED_FULL; |
| 500 |
dev->speedmask = 0;
|
| 501 |
if (desc->full) {
|
| 502 |
dev->speedmask |= USB_SPEED_MASK_FULL; |
| 503 |
} |
| 504 |
if (desc->high) {
|
| 505 |
dev->speedmask |= USB_SPEED_MASK_HIGH; |
| 506 |
} |
| 507 |
if (desc->super) {
|
| 508 |
dev->speedmask |= USB_SPEED_MASK_SUPER; |
| 509 |
} |
| 510 |
usb_desc_setdefaults(dev); |
| 511 |
} |
| 512 |
|
| 513 |
void usb_desc_attach(USBDevice *dev)
|
| 514 |
{
|
| 515 |
const USBDesc *desc = usb_device_get_usb_desc(dev);
|
| 516 |
|
| 517 |
assert(desc != NULL);
|
| 518 |
if (desc->super && (dev->port->speedmask & USB_SPEED_MASK_SUPER)) {
|
| 519 |
dev->speed = USB_SPEED_SUPER; |
| 520 |
} else if (desc->high && (dev->port->speedmask & USB_SPEED_MASK_HIGH)) { |
| 521 |
dev->speed = USB_SPEED_HIGH; |
| 522 |
} else if (desc->full && (dev->port->speedmask & USB_SPEED_MASK_FULL)) { |
| 523 |
dev->speed = USB_SPEED_FULL; |
| 524 |
} else {
|
| 525 |
return;
|
| 526 |
} |
| 527 |
usb_desc_setdefaults(dev); |
| 528 |
} |
| 529 |
|
| 530 |
void usb_desc_set_string(USBDevice *dev, uint8_t index, const char *str) |
| 531 |
{
|
| 532 |
USBDescString *s; |
| 533 |
|
| 534 |
QLIST_FOREACH(s, &dev->strings, next) {
|
| 535 |
if (s->index == index) {
|
| 536 |
break;
|
| 537 |
} |
| 538 |
} |
| 539 |
if (s == NULL) { |
| 540 |
s = g_malloc0(sizeof(*s));
|
| 541 |
s->index = index; |
| 542 |
QLIST_INSERT_HEAD(&dev->strings, s, next); |
| 543 |
} |
| 544 |
g_free(s->str); |
| 545 |
s->str = g_strdup(str); |
| 546 |
} |
| 547 |
|
| 548 |
/*
|
| 549 |
* This function creates a serial number for a usb device.
|
| 550 |
* The serial number should:
|
| 551 |
* (a) Be unique within the virtual machine.
|
| 552 |
* (b) Be constant, so you don't get a new one each
|
| 553 |
* time the guest is started.
|
| 554 |
* So we are using the physical location to generate a serial number
|
| 555 |
* from it. It has three pieces: First a fixed, device-specific
|
| 556 |
* prefix. Second the device path of the host controller (which is
|
| 557 |
* the pci address in most cases). Third the physical port path.
|
| 558 |
* Results in serial numbers like this: "314159-0000:00:1d.7-3".
|
| 559 |
*/
|
| 560 |
void usb_desc_create_serial(USBDevice *dev)
|
| 561 |
{
|
| 562 |
DeviceState *hcd = dev->qdev.parent_bus->parent; |
| 563 |
const USBDesc *desc = usb_device_get_usb_desc(dev);
|
| 564 |
int index = desc->id.iSerialNumber;
|
| 565 |
char serial[64]; |
| 566 |
char *path;
|
| 567 |
int dst;
|
| 568 |
|
| 569 |
if (dev->serial) {
|
| 570 |
/* 'serial' usb bus property has priority if present */
|
| 571 |
usb_desc_set_string(dev, index, dev->serial); |
| 572 |
return;
|
| 573 |
} |
| 574 |
|
| 575 |
assert(index != 0 && desc->str[index] != NULL); |
| 576 |
dst = snprintf(serial, sizeof(serial), "%s", desc->str[index]); |
| 577 |
path = qdev_get_dev_path(hcd); |
| 578 |
if (path) {
|
| 579 |
dst += snprintf(serial+dst, sizeof(serial)-dst, "-%s", path); |
| 580 |
} |
| 581 |
dst += snprintf(serial+dst, sizeof(serial)-dst, "-%s", dev->port->path); |
| 582 |
usb_desc_set_string(dev, index, serial); |
| 583 |
} |
| 584 |
|
| 585 |
const char *usb_desc_get_string(USBDevice *dev, uint8_t index) |
| 586 |
{
|
| 587 |
USBDescString *s; |
| 588 |
|
| 589 |
QLIST_FOREACH(s, &dev->strings, next) {
|
| 590 |
if (s->index == index) {
|
| 591 |
return s->str;
|
| 592 |
} |
| 593 |
} |
| 594 |
return NULL; |
| 595 |
} |
| 596 |
|
| 597 |
int usb_desc_string(USBDevice *dev, int index, uint8_t *dest, size_t len) |
| 598 |
{
|
| 599 |
uint8_t bLength, pos, i; |
| 600 |
const char *str; |
| 601 |
|
| 602 |
if (len < 4) { |
| 603 |
return -1; |
| 604 |
} |
| 605 |
|
| 606 |
if (index == 0) { |
| 607 |
/* language ids */
|
| 608 |
dest[0] = 4; |
| 609 |
dest[1] = USB_DT_STRING;
|
| 610 |
dest[2] = 0x09; |
| 611 |
dest[3] = 0x04; |
| 612 |
return 4; |
| 613 |
} |
| 614 |
|
| 615 |
str = usb_desc_get_string(dev, index); |
| 616 |
if (str == NULL) { |
| 617 |
str = usb_device_get_usb_desc(dev)->str[index]; |
| 618 |
if (str == NULL) { |
| 619 |
return 0; |
| 620 |
} |
| 621 |
} |
| 622 |
|
| 623 |
bLength = strlen(str) * 2 + 2; |
| 624 |
dest[0] = bLength;
|
| 625 |
dest[1] = USB_DT_STRING;
|
| 626 |
i = 0; pos = 2; |
| 627 |
while (pos+1 < bLength && pos+1 < len) { |
| 628 |
dest[pos++] = str[i++]; |
| 629 |
dest[pos++] = 0;
|
| 630 |
} |
| 631 |
return pos;
|
| 632 |
} |
| 633 |
|
| 634 |
int usb_desc_get_descriptor(USBDevice *dev, USBPacket *p,
|
| 635 |
int value, uint8_t *dest, size_t len)
|
| 636 |
{
|
| 637 |
const USBDesc *desc = usb_device_get_usb_desc(dev);
|
| 638 |
const USBDescDevice *other_dev;
|
| 639 |
uint8_t buf[256];
|
| 640 |
uint8_t type = value >> 8;
|
| 641 |
uint8_t index = value & 0xff;
|
| 642 |
int flags, ret = -1; |
| 643 |
|
| 644 |
if (dev->speed == USB_SPEED_HIGH) {
|
| 645 |
other_dev = usb_device_get_usb_desc(dev)->full; |
| 646 |
} else {
|
| 647 |
other_dev = usb_device_get_usb_desc(dev)->high; |
| 648 |
} |
| 649 |
|
| 650 |
flags = 0;
|
| 651 |
if (dev->device->bcdUSB >= 0x0300) { |
| 652 |
flags |= USB_DESC_FLAG_SUPER; |
| 653 |
} |
| 654 |
|
| 655 |
switch(type) {
|
| 656 |
case USB_DT_DEVICE:
|
| 657 |
ret = usb_desc_device(&desc->id, dev->device, buf, sizeof(buf));
|
| 658 |
trace_usb_desc_device(dev->addr, len, ret); |
| 659 |
break;
|
| 660 |
case USB_DT_CONFIG:
|
| 661 |
if (index < dev->device->bNumConfigurations) {
|
| 662 |
ret = usb_desc_config(dev->device->confs + index, flags, |
| 663 |
buf, sizeof(buf));
|
| 664 |
} |
| 665 |
trace_usb_desc_config(dev->addr, index, len, ret); |
| 666 |
break;
|
| 667 |
case USB_DT_STRING:
|
| 668 |
ret = usb_desc_string(dev, index, buf, sizeof(buf));
|
| 669 |
trace_usb_desc_string(dev->addr, index, len, ret); |
| 670 |
break;
|
| 671 |
case USB_DT_DEVICE_QUALIFIER:
|
| 672 |
if (other_dev != NULL) { |
| 673 |
ret = usb_desc_device_qualifier(other_dev, buf, sizeof(buf));
|
| 674 |
} |
| 675 |
trace_usb_desc_device_qualifier(dev->addr, len, ret); |
| 676 |
break;
|
| 677 |
case USB_DT_OTHER_SPEED_CONFIG:
|
| 678 |
if (other_dev != NULL && index < other_dev->bNumConfigurations) { |
| 679 |
ret = usb_desc_config(other_dev->confs + index, flags, |
| 680 |
buf, sizeof(buf));
|
| 681 |
buf[0x01] = USB_DT_OTHER_SPEED_CONFIG;
|
| 682 |
} |
| 683 |
trace_usb_desc_other_speed_config(dev->addr, index, len, ret); |
| 684 |
break;
|
| 685 |
case USB_DT_BOS:
|
| 686 |
ret = usb_desc_bos(desc, buf, sizeof(buf));
|
| 687 |
trace_usb_desc_bos(dev->addr, len, ret); |
| 688 |
break;
|
| 689 |
|
| 690 |
case USB_DT_DEBUG:
|
| 691 |
/* ignore silently */
|
| 692 |
break;
|
| 693 |
|
| 694 |
default:
|
| 695 |
fprintf(stderr, "%s: %d unknown type %d (len %zd)\n", __FUNCTION__,
|
| 696 |
dev->addr, type, len); |
| 697 |
break;
|
| 698 |
} |
| 699 |
|
| 700 |
if (ret > 0) { |
| 701 |
if (ret > len) {
|
| 702 |
ret = len; |
| 703 |
} |
| 704 |
memcpy(dest, buf, ret); |
| 705 |
p->actual_length = ret; |
| 706 |
ret = 0;
|
| 707 |
} |
| 708 |
return ret;
|
| 709 |
} |
| 710 |
|
| 711 |
int usb_desc_handle_control(USBDevice *dev, USBPacket *p,
|
| 712 |
int request, int value, int index, int length, uint8_t *data) |
| 713 |
{
|
| 714 |
const USBDesc *desc = usb_device_get_usb_desc(dev);
|
| 715 |
int ret = -1; |
| 716 |
|
| 717 |
assert(desc != NULL);
|
| 718 |
switch(request) {
|
| 719 |
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
| 720 |
dev->addr = value; |
| 721 |
trace_usb_set_addr(dev->addr); |
| 722 |
ret = 0;
|
| 723 |
break;
|
| 724 |
|
| 725 |
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
| 726 |
ret = usb_desc_get_descriptor(dev, p, value, data, length); |
| 727 |
break;
|
| 728 |
|
| 729 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
| 730 |
/*
|
| 731 |
* 9.4.2: 0 should be returned if the device is unconfigured, otherwise
|
| 732 |
* the non zero value of bConfigurationValue.
|
| 733 |
*/
|
| 734 |
data[0] = dev->config ? dev->config->bConfigurationValue : 0; |
| 735 |
p->actual_length = 1;
|
| 736 |
ret = 0;
|
| 737 |
break;
|
| 738 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
| 739 |
ret = usb_desc_set_config(dev, value); |
| 740 |
trace_usb_set_config(dev->addr, value, ret); |
| 741 |
break;
|
| 742 |
|
| 743 |
case DeviceRequest | USB_REQ_GET_STATUS: {
|
| 744 |
const USBDescConfig *config = dev->config ?
|
| 745 |
dev->config : &dev->device->confs[0];
|
| 746 |
|
| 747 |
data[0] = 0; |
| 748 |
/*
|
| 749 |
* Default state: Device behavior when this request is received while
|
| 750 |
* the device is in the Default state is not specified.
|
| 751 |
* We return the same value that a configured device would return if
|
| 752 |
* it used the first configuration.
|
| 753 |
*/
|
| 754 |
if (config->bmAttributes & 0x40) { |
| 755 |
data[0] |= 1 << USB_DEVICE_SELF_POWERED; |
| 756 |
} |
| 757 |
if (dev->remote_wakeup) {
|
| 758 |
data[0] |= 1 << USB_DEVICE_REMOTE_WAKEUP; |
| 759 |
} |
| 760 |
data[1] = 0x00; |
| 761 |
p->actual_length = 2;
|
| 762 |
ret = 0;
|
| 763 |
break;
|
| 764 |
} |
| 765 |
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
|
| 766 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
| 767 |
dev->remote_wakeup = 0;
|
| 768 |
ret = 0;
|
| 769 |
} |
| 770 |
trace_usb_clear_device_feature(dev->addr, value, ret); |
| 771 |
break;
|
| 772 |
case DeviceOutRequest | USB_REQ_SET_FEATURE:
|
| 773 |
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
| 774 |
dev->remote_wakeup = 1;
|
| 775 |
ret = 0;
|
| 776 |
} |
| 777 |
trace_usb_set_device_feature(dev->addr, value, ret); |
| 778 |
break;
|
| 779 |
|
| 780 |
case InterfaceRequest | USB_REQ_GET_INTERFACE:
|
| 781 |
if (index < 0 || index >= dev->ninterfaces) { |
| 782 |
break;
|
| 783 |
} |
| 784 |
data[0] = dev->altsetting[index];
|
| 785 |
p->actual_length = 1;
|
| 786 |
ret = 0;
|
| 787 |
break;
|
| 788 |
case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
|
| 789 |
ret = usb_desc_set_interface(dev, index, value); |
| 790 |
trace_usb_set_interface(dev->addr, index, value, ret); |
| 791 |
break;
|
| 792 |
|
| 793 |
} |
| 794 |
return ret;
|
| 795 |
} |