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usb: use USBDescriptor for endpoint descriptors. 

Add endpoint descriptor substruct to USBDescriptor,
use it in the descriptor generator code.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-03-29 16:01:21 +02:00
parent feafd797ee
commit e36a20d329
2 changed files with 20 additions and 9 deletions
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20
hw/usb/desc.c
View File

@ -200,21 +200,23 @@ int usb_desc_endpoint(const USBDescEndpoint *ep, uint8_t *dest, size_t len)
{
uint8_t bLength = ep->is_audio ? 0x09 : 0x07;
uint8_t extralen = ep->extra ? ep->extra[0] : 0;
USBDescriptor *d = (void *)dest;
if (len < bLength + extralen) {
return -1;
}
dest[0x00] = bLength;
dest[0x01] = USB_DT_ENDPOINT;
dest[0x02] = ep->bEndpointAddress;
dest[0x03] = ep->bmAttributes;
dest[0x04] = usb_lo(ep->wMaxPacketSize);
dest[0x05] = usb_hi(ep->wMaxPacketSize);
dest[0x06] = ep->bInterval;
d->bLength = bLength;
d->bDescriptorType = USB_DT_ENDPOINT;
d->u.endpoint.bEndpointAddress = ep->bEndpointAddress;
d->u.endpoint.bmAttributes = ep->bmAttributes;
d->u.endpoint.wMaxPacketSize_lo = usb_lo(ep->wMaxPacketSize);
d->u.endpoint.wMaxPacketSize_hi = usb_hi(ep->wMaxPacketSize);
d->u.endpoint.bInterval = ep->bInterval;
if (ep->is_audio) {
dest[0x07] = ep->bRefresh;
dest[0x08] = ep->bSynchAddress;
d->u.endpoint.bRefresh = ep->bRefresh;
d->u.endpoint.bSynchAddress = ep->bSynchAddress;
}
if (ep->extra) {
memcpy(dest + bLength, ep->extra, extralen);

9
hw/usb/desc.h
View File

@ -54,6 +54,15 @@ typedef struct USBDescriptor {
uint8_t bInterfaceProtocol;
uint8_t iInterface;
} interface;
struct {
uint8_t bEndpointAddress;
uint8_t bmAttributes;
uint8_t wMaxPacketSize_lo;
uint8_t wMaxPacketSize_hi;
uint8_t bInterval;
uint8_t bRefresh; /* only audio ep */
uint8_t bSynchAddress; /* only audio ep */
} endpoint;
} u;
} QEMU_PACKED USBDescriptor;