private static void InitTransmit(UHCITransmitDescriptor *td, UHCITransmitDescriptor *previous,
USBDeviceSpeed speed, uint address, uint endp, uint toogle, uint type, uint len, byte *data)
{
len = (len - 1) & 0x7FFF;
if (previous != null)
{
previous->Link = (int)Paging.GetPhysicalFromVirtual(td) | TD_POINTER_DEPTH;
previous->Next = td;
}
td->Link = TD_POINTER_TERMINATE;
td->Next = null;
td->Control = (int)((3 << (int)TD_ERROR_SHIFT) | TD_CONTROL_ACTIVE);
if (speed == USBDeviceSpeed.LOW_SPEED)
{
td->Control |= (int)TD_CONTROL_LOW_SPEED;
}
td->Token = (len << TD_TOKEN_MAXLEN) |
(toogle << TD_TOKEN_D_SHIFT) |
(endp << TD_TOKEN_ENDP) |
(address << TD_TOKEN_ADDR) |
type;
td->BufferPointer = (int)Paging.GetPhysicalFromVirtual(data);
}
private static void InitTransmit(EHCITransferDescriptor *td, EHCITransferDescriptor *previous,
USBDeviceSpeed speed, uint address, uint endp, uint toggle, uint type, uint len, byte *data)
{
td->NextLink = TD_TERMINATE;
td->Reserved = TD_TERMINATE;
td->Next = null;
// Add link
if (previous != null)
{
previous->NextLink = (int)td;
previous->Next = td;
}
// Set token
td->Token = (int)((toggle << TD_TOK_TOGGLE_SHIFT) |
(len << TD_TOK_TBTT_SHIFT) |
(3 << TD_TOK_CERR_SHIFT) |
(type << TD_TOK_PID_SHIFT) |
TD_TOK_STATUS_ACTIVE);
// Set data buffer
int ptr = (int)data;
td->Buffer[0] = ptr;
td->ExtBuffer[0] = (ptr >> 32);
ptr &= ~0xFFF;
for (int i = 1; i < 4; i++)
{
ptr += 0x1000;
td->Buffer[i] = ptr;
td->ExtBuffer[i] = (ptr >> 32);
}
}