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usb: use USBDescriptor for device qualifier descriptors.

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Add device qualifier 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 12:15:01 +02:00
parent d3f904ea7b
commit 3cfeee6177
2 changed files with 21 additions and 10 deletions
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21
hw/usb/desc.c
View File

@ -53,22 +53,23 @@ int usb_desc_device_qualifier(const USBDescDevice *dev,
uint8_t *dest, size_t len)
{
uint8_t bLength = 0x0a;
USBDescriptor *d = (void *)dest;
if (len < bLength) {
return -1;
}
dest[0x00] = bLength;
dest[0x01] = USB_DT_DEVICE_QUALIFIER;
d->bLength = bLength;
d->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
dest[0x02] = usb_lo(dev->bcdUSB);
dest[0x03] = usb_hi(dev->bcdUSB);
dest[0x04] = dev->bDeviceClass;
dest[0x05] = dev->bDeviceSubClass;
dest[0x06] = dev->bDeviceProtocol;
dest[0x07] = dev->bMaxPacketSize0;
dest[0x08] = dev->bNumConfigurations;
dest[0x09] = 0; /* reserved */
d->u.device_qualifier.bcdUSB_lo = usb_lo(dev->bcdUSB);
d->u.device_qualifier.bcdUSB_hi = usb_hi(dev->bcdUSB);
d->u.device_qualifier.bDeviceClass = dev->bDeviceClass;
d->u.device_qualifier.bDeviceSubClass = dev->bDeviceSubClass;
d->u.device_qualifier.bDeviceProtocol = dev->bDeviceProtocol;
d->u.device_qualifier.bMaxPacketSize0 = dev->bMaxPacketSize0;
d->u.device_qualifier.bNumConfigurations = dev->bNumConfigurations;
d->u.device_qualifier.bReserved = 0;
return bLength;
}

10
hw/usb/desc.h
View File

@ -26,6 +26,16 @@ typedef struct USBDescriptor {
uint8_t iSerialNumber;
uint8_t bNumConfigurations;
} device;
struct {
uint8_t bcdUSB_lo;
uint8_t bcdUSB_hi;
uint8_t bDeviceClass;
uint8_t bDeviceSubClass;
uint8_t bDeviceProtocol;
uint8_t bMaxPacketSize0;
uint8_t bNumConfigurations;
uint8_t bReserved;
} device_qualifier;
} u;
} QEMU_PACKED USBDescriptor;