NTSTATUS BuildSetupPacketFromURB();
NTSTATUS BuildControlTransferDescriptor(POHCI_ENDPOINT_DESCRIPTOR * OutEndpointDescriptor);
NTSTATUS BuildBulkInterruptEndpoint(POHCI_ENDPOINT_DESCRIPTOR * OutEndpointDescriptor);
+ NTSTATUS BuildIsochronousEndpoint(POHCI_ENDPOINT_DESCRIPTOR * OutEndpointDescriptor);
NTSTATUS CreateGeneralTransferDescriptor(POHCI_GENERAL_TD* OutDescriptor, ULONG BufferSize);
VOID FreeDescriptor(POHCI_GENERAL_TD Descriptor);
NTSTATUS AllocateEndpointDescriptor(OUT POHCI_ENDPOINT_DESCRIPTOR *OutDescriptor);
+ NTSTATUS CreateIsochronousTransferDescriptor(OUT POHCI_ISO_TD *OutDescriptor, ULONG FrameCount);
UCHAR GetEndpointAddress();
USHORT GetMaxPacketSize();
//
switch (Urb->UrbHeader.Function)
{
+ case URB_FUNCTION_ISOCH_TRANSFER:
+ {
+ //
+ // there must be at least one packet
+ //
+ ASSERT(Urb->UrbIsochronousTransfer.NumberOfPackets);
+
+ //
+ // is there data to be transferred
+ //
+ if (Urb->UrbIsochronousTransfer.TransferBufferLength)
+ {
+ //
+ // Check if there is a MDL
+ //
+ if (!Urb->UrbBulkOrInterruptTransfer.TransferBufferMDL)
+ {
+ //
+ // sanity check
+ //
+ PC_ASSERT(Urb->UrbBulkOrInterruptTransfer.TransferBuffer);
+
+ //
+ // Create one using TransferBuffer
+ //
+ DPRINT("Creating Mdl from Urb Buffer %p Length %lu\n", Urb->UrbBulkOrInterruptTransfer.TransferBuffer, Urb->UrbBulkOrInterruptTransfer.TransferBufferLength);
+ m_TransferBufferMDL = IoAllocateMdl(Urb->UrbBulkOrInterruptTransfer.TransferBuffer,
+ Urb->UrbBulkOrInterruptTransfer.TransferBufferLength,
+ FALSE,
+ FALSE,
+ NULL);
+
+ if (!m_TransferBufferMDL)
+ {
+ //
+ // failed to allocate mdl
+ //
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ //
+ // build mdl for non paged pool
+ // FIXME: Does hub driver already do this when passing MDL?
+ //
+ MmBuildMdlForNonPagedPool(m_TransferBufferMDL);
+ }
+ else
+ {
+ //
+ // use provided mdl
+ //
+ m_TransferBufferMDL = Urb->UrbIsochronousTransfer.TransferBufferMDL;
+ }
+ }
+
+ //
+ // save buffer length
+ //
+ m_TransferBufferLength = Urb->UrbIsochronousTransfer.TransferBufferLength;
+
+ //
+ // Set Length Completed to 0
+ //
+ m_TransferBufferLengthCompleted = 0;
+
+ //
+ // get endpoint descriptor
+ //
+ m_EndpointDescriptor = (PUSB_ENDPOINT_DESCRIPTOR)Urb->UrbIsochronousTransfer.PipeHandle;
+
+ //
+ // completed initialization
+ //
+ break;
+ }
//
// luckily those request have the same structure layout
//
m_DmaManager->Release(Descriptor, sizeof(OHCI_GENERAL_TD));
}
+
+//----------------------------------------------------------------------------------------
+NTSTATUS
+CUSBRequest::CreateIsochronousTransferDescriptor(
+ POHCI_ISO_TD* OutDescriptor,
+ ULONG FrameCount)
+{
+ POHCI_ISO_TD Descriptor;
+ PHYSICAL_ADDRESS DescriptorAddress;
+ NTSTATUS Status;
+
+ //
+ // allocate transfer descriptor
+ //
+ Status = m_DmaManager->Allocate(sizeof(OHCI_ISO_TD), (PVOID*)&Descriptor, &DescriptorAddress);
+ if (!NT_SUCCESS(Status))
+ {
+ //
+ // no memory
+ //
+ return Status;
+ }
+
+ //
+ // initialize descriptor, hardware part
+ //
+ Descriptor->Flags = OHCI_ITD_SET_FRAME_COUNT(FrameCount) | OHCI_ITD_SET_DELAY_INTERRUPT(OHCI_TD_INTERRUPT_NONE);// | OHCI_TD_SET_CONDITION_CODE(OHCI_TD_CONDITION_NOT_ACCESSED);
+ Descriptor->BufferPhysical = 0;
+ Descriptor->NextPhysicalDescriptor = 0;
+ Descriptor->LastPhysicalByteAddress = 0;
+
+ //
+ // software part
+ //
+ Descriptor->PhysicalAddress.QuadPart = DescriptorAddress.QuadPart;
+ Descriptor->NextLogicalDescriptor = 0;
+
+ //
+ // store result
+ //
+ *OutDescriptor = Descriptor;
+
+ //
+ // done
+ //
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+CUSBRequest::BuildIsochronousEndpoint(
+ POHCI_ENDPOINT_DESCRIPTOR * OutEndpointDescriptor)
+{
+ POHCI_ISO_TD FirstDescriptor = NULL, PreviousDescriptor = NULL, CurrentDescriptor = NULL;
+ POHCI_ENDPOINT_DESCRIPTOR EndpointDescriptor;
+ ULONG Index = 0, SubIndex, NumberOfPackets, PageOffset, Page;
+ NTSTATUS Status;
+ PVOID Buffer;
+ PIO_STACK_LOCATION IoStack;
+ PURB Urb;
+ PHYSICAL_ADDRESS Address;
+
+ //
+ // get current irp stack location
+ //
+ IoStack = IoGetCurrentIrpStackLocation(m_Irp);
+
+ //
+ // sanity check
+ //
+ PC_ASSERT(IoStack->MajorFunction == IRP_MJ_INTERNAL_DEVICE_CONTROL);
+ PC_ASSERT(IoStack->Parameters.DeviceIoControl.IoControlCode == IOCTL_INTERNAL_USB_SUBMIT_URB);
+ PC_ASSERT(IoStack->Parameters.Others.Argument1 != 0);
+
+ //
+ // get urb
+ //
+ Urb = (PURB)IoStack->Parameters.Others.Argument1;
+ ASSERT(Urb);
+
+ //
+ // allocate endpoint descriptor
+ //
+ Status = AllocateEndpointDescriptor(&EndpointDescriptor);
+ if (!NT_SUCCESS(Status))
+ {
+ //
+ // failed to create setup descriptor
+ //
+ ASSERT(FALSE);
+ return Status;
+ }
+
+ //
+ // get buffer
+ //
+ Buffer = MmGetSystemAddressForMdlSafe(m_TransferBufferMDL, NormalPagePriority);
+ ASSERT(Buffer);
+
+ //
+ // FIXME: support requests which spans serveral pages
+ //
+ ASSERT(ADDRESS_AND_SIZE_TO_SPAN_PAGES(MmGetMdlVirtualAddress(m_TransferBufferMDL), MmGetMdlByteCount(m_TransferBufferMDL)) <= 2);
+
+ Status = m_DmaManager->Allocate(m_TransferBufferLength, &Buffer, &Address);
+ ASSERT(Status == STATUS_SUCCESS);
+
+
+ while(Index < Urb->UrbIsochronousTransfer.NumberOfPackets)
+ {
+ //
+ // get number of packets remaining
+ //
+ NumberOfPackets = min(Urb->UrbIsochronousTransfer.NumberOfPackets - Index, OHCI_ITD_NOFFSET);
+ //
+ // allocate iso descriptor
+ //
+ Status = CreateIsochronousTransferDescriptor(&CurrentDescriptor, NumberOfPackets);
+ if (!NT_SUCCESS(Status))
+ {
+ //
+ // FIXME: cleanup
+ // failed to allocate descriptor
+ //
+ ASSERT(FALSE);
+ return Status;
+ }
+
+ //
+ // get physical page
+ //
+ Page = MmGetPhysicalAddress(Buffer).LowPart;
+
+ //
+ // get page offset
+ //
+ PageOffset = BYTE_OFFSET(Page);
+
+ //
+ // initialize descriptor
+ //
+ CurrentDescriptor->BufferPhysical = Page - PageOffset;
+
+ for(SubIndex = 0; SubIndex < NumberOfPackets; SubIndex++)
+ {
+ //
+ // store buffer offset
+ //
+ CurrentDescriptor->Offset[SubIndex] = Urb->UrbIsochronousTransfer.IsoPacket[Index+SubIndex].Offset + PageOffset;
+ DPRINT1("Index %lu PacketOffset %lu FinalOffset %lu\n", SubIndex+Index, Urb->UrbIsochronousTransfer.IsoPacket[Index+SubIndex].Offset, CurrentDescriptor->Offset[SubIndex]);
+ }
+
+ //
+ // increment packet offset
+ //
+ Index += NumberOfPackets;
+
+ //
+ // check if this is the last descriptor
+ //
+ if (Index == Urb->UrbIsochronousTransfer.NumberOfPackets)
+ {
+ //
+ // end of transfer
+ //
+ CurrentDescriptor->LastPhysicalByteAddress = CurrentDescriptor->BufferPhysical + PageOffset + m_TransferBufferLength - 1;
+ }
+ else
+ {
+ //
+ // use start address of next packet - 1
+ //
+ CurrentDescriptor->LastPhysicalByteAddress = CurrentDescriptor->BufferPhysical + PageOffset + Urb->UrbIsochronousTransfer.IsoPacket[Index].Offset - 1;
+ }
+
+ //
+ // is there a previous descriptor
+ //
+ if (PreviousDescriptor)
+ {
+ //
+ // link descriptors
+ //
+ PreviousDescriptor->NextLogicalDescriptor = CurrentDescriptor;
+ PreviousDescriptor->NextPhysicalDescriptor = CurrentDescriptor->PhysicalAddress.LowPart;
+ }
+ else
+ {
+ //
+ // first descriptor
+ //
+ FirstDescriptor = CurrentDescriptor;
+ }
+
+ //
+ // store as previous descriptor
+ //
+ PreviousDescriptor = CurrentDescriptor;
+ DPRINT1("Current Descriptor %p Logical %lx StartAddress %x EndAddress %x\n", CurrentDescriptor, CurrentDescriptor->PhysicalAddress.LowPart, CurrentDescriptor->BufferPhysical, CurrentDescriptor->LastPhysicalByteAddress);
+
+ //
+ // fire interrupt as soon transfer is finished
+ //
+ CurrentDescriptor->Flags |= OHCI_TD_SET_DELAY_INTERRUPT(OHCI_TD_INTERRUPT_IMMEDIATE);
+ }
+
+ //
+ // clear interrupt mask for last transfer descriptor
+ //
+ CurrentDescriptor->Flags &= ~OHCI_TD_INTERRUPT_MASK;
+
+ //
+ // fire interrupt as soon transfer is finished
+ //
+ CurrentDescriptor->Flags |= OHCI_TD_SET_DELAY_INTERRUPT(OHCI_TD_INTERRUPT_IMMEDIATE);
+
+ //
+ // set isochronous type
+ //
+ EndpointDescriptor->Flags |= OHCI_ENDPOINT_ISOCHRONOUS_FORMAT;
+
+ //
+ // now link descriptor to endpoint
+ //
+ EndpointDescriptor->HeadPhysicalDescriptor = FirstDescriptor->PhysicalAddress.LowPart;
+ EndpointDescriptor->TailPhysicalDescriptor = CurrentDescriptor->PhysicalAddress.LowPart;
+ EndpointDescriptor->HeadLogicalDescriptor = FirstDescriptor;
+
+ //
+ // store result
+ //
+ *OutEndpointDescriptor = EndpointDescriptor;
+
+ //
+ // done
+ //
+ return STATUS_SUCCESS;
+}
+
//----------------------------------------------------------------------------------------
NTSTATUS
CUSBRequest::CreateGeneralTransferDescriptor(
Descriptor->Flags |= OHCI_ENDPOINT_SET_ENDPOINT_NUMBER(GetEndpointAddress());
Descriptor->Flags |= OHCI_ENDPOINT_SET_MAX_PACKET_SIZE(GetMaxPacketSize());
+ DPRINT("Flags %x DeviceAddress %x EndpointAddress %x PacketSize %x\n", Descriptor->Flags, GetDeviceAddress(), GetEndpointAddress(), GetMaxPacketSize());
+
//
// is there an endpoint descriptor
//
Status = BuildBulkInterruptEndpoint(OutDescriptor);
break;
case USB_ENDPOINT_TYPE_ISOCHRONOUS:
- DPRINT1("USB_ENDPOINT_TYPE_ISOCHRONOUS not implemented\n");
- Status = STATUS_NOT_IMPLEMENTED;
+ Status = BuildIsochronousEndpoint((POHCI_ENDPOINT_DESCRIPTOR*)OutDescriptor);
break;
default:
PC_ASSERT(FALSE);
struct _OHCI_ENDPOINT_DESCRIPTOR * OutDescriptor)
{
POHCI_GENERAL_TD TransferDescriptor, NextTransferDescriptor;
+ POHCI_ISO_TD IsoTransferDescriptor, IsoNextTransferDescriptor;
+ ULONG Index, PacketCount;
DPRINT("CUSBRequest::FreeEndpointDescriptor EndpointDescriptor %p Logical %x\n", OutDescriptor, OutDescriptor->PhysicalAddress.LowPart);
- //
- // get first general transfer descriptor
- //
- TransferDescriptor = (POHCI_GENERAL_TD)OutDescriptor->HeadLogicalDescriptor;
-
- //
- // release endpoint descriptor
- //
- m_DmaManager->Release(OutDescriptor, sizeof(OHCI_ENDPOINT_DESCRIPTOR));
-
- while(TransferDescriptor)
+ if (OutDescriptor->Flags & OHCI_ENDPOINT_ISOCHRONOUS_FORMAT)
{
//
- // get next
+ // get first iso transfer descriptor
//
- NextTransferDescriptor = (POHCI_GENERAL_TD)TransferDescriptor->NextLogicalDescriptor;
+ IsoTransferDescriptor = (POHCI_ISO_TD)OutDescriptor->HeadLogicalDescriptor;
//
- // is there a buffer associated
+ // release endpoint descriptor
//
- if (TransferDescriptor->BufferSize)
+ m_DmaManager->Release(OutDescriptor, sizeof(OHCI_ENDPOINT_DESCRIPTOR));
+
+ while(IsoTransferDescriptor)
{
//
- // release buffer
+ // get next
//
- m_DmaManager->Release(TransferDescriptor->BufferLogical, TransferDescriptor->BufferSize);
- }
+ IsoNextTransferDescriptor = IsoTransferDescriptor->NextLogicalDescriptor;
+
+ //
+ // get packet count
+ //
+ PacketCount = OHCI_ITD_GET_FRAME_COUNT(IsoTransferDescriptor->Flags);
- DPRINT("CUSBRequest::FreeEndpointDescriptor Descriptor %p Logical %x Buffer Physical %x EndAddress %x\n", TransferDescriptor, TransferDescriptor->PhysicalAddress.LowPart, TransferDescriptor->BufferPhysical, TransferDescriptor->LastPhysicalByteAddress);
+ DPRINT1("CUSBRequest::FreeEndpointDescriptor Descriptor %p Logical %x Buffer Physical %x EndAddress %x PacketCount %lu\n", IsoTransferDescriptor, IsoTransferDescriptor->PhysicalAddress.LowPart, IsoTransferDescriptor->BufferPhysical, IsoTransferDescriptor->LastPhysicalByteAddress, PacketCount);
+ for(Index = 0; Index < PacketCount; Index++)
+ {
+ DPRINT1("PSW Index %lu Value %x\n", Index, IsoTransferDescriptor->Offset[Index]);
+ }
+
+ //
+ // release descriptor
+ //
+ m_DmaManager->Release(IsoTransferDescriptor, sizeof(OHCI_ISO_TD));
+
+ //
+ // move to next
+ //
+ IsoTransferDescriptor = IsoNextTransferDescriptor;
+ }
+ }
+ else
+ {
//
- // release descriptor
+ // get first general transfer descriptor
//
- m_DmaManager->Release(TransferDescriptor, sizeof(OHCI_GENERAL_TD));
+ TransferDescriptor = (POHCI_GENERAL_TD)OutDescriptor->HeadLogicalDescriptor;
//
- // move to next
+ // release endpoint descriptor
//
- TransferDescriptor = NextTransferDescriptor;
+ m_DmaManager->Release(OutDescriptor, sizeof(OHCI_ENDPOINT_DESCRIPTOR));
+
+ while(TransferDescriptor)
+ {
+ //
+ // get next
+ //
+ NextTransferDescriptor = (POHCI_GENERAL_TD)TransferDescriptor->NextLogicalDescriptor;
+
+ //
+ // is there a buffer associated
+ //
+ if (TransferDescriptor->BufferSize)
+ {
+ //
+ // release buffer
+ //
+ m_DmaManager->Release(TransferDescriptor->BufferLogical, TransferDescriptor->BufferSize);
+ }
+
+ DPRINT("CUSBRequest::FreeEndpointDescriptor Descriptor %p Logical %x Buffer Physical %x EndAddress %x\n", TransferDescriptor, TransferDescriptor->PhysicalAddress.LowPart, TransferDescriptor->BufferPhysical, TransferDescriptor->LastPhysicalByteAddress);
+
+ //
+ // release descriptor
+ //
+ m_DmaManager->Release(TransferDescriptor, sizeof(OHCI_GENERAL_TD));
+
+ //
+ // move to next
+ //
+ TransferDescriptor = NextTransferDescriptor;
+ }
}
}
CUSBRequest::CompletionCallback(
struct _OHCI_ENDPOINT_DESCRIPTOR * OutDescriptor)
{
- POHCI_GENERAL_TD TransferDescriptor, NextTransferDescriptor;
PIO_STACK_LOCATION IoStack;
PURB Urb;
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