mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
814 lines
22 KiB
814 lines
22 KiB
/*++
|
|
|
|
Copyright (c) 1995,1996 Microsoft Corporation
|
|
:ts=4
|
|
|
|
Module Name:
|
|
|
|
int.c
|
|
|
|
Abstract:
|
|
|
|
This module contains the interrupt routine, DPC routines and routines
|
|
that synchronize with the interrupt routine.
|
|
|
|
Environment:
|
|
|
|
kernel mode only
|
|
|
|
Notes:
|
|
|
|
Revision History:
|
|
|
|
11-01-95 : created
|
|
|
|
--*/
|
|
#include "wdm.h"
|
|
#include "stdarg.h"
|
|
#include "stdio.h"
|
|
|
|
|
|
#include "usbdi.h"
|
|
#include "hcdi.h"
|
|
#include "uhcd.h"
|
|
|
|
#ifdef DEBUG_LOG
|
|
ULONG TrapOn = 0;
|
|
#endif
|
|
|
|
BOOLEAN
|
|
UHCD_InterruptService(
|
|
IN PKINTERRUPT Interrupt,
|
|
IN PVOID Context
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This is the interrupt service routine for the UHCD.
|
|
|
|
Arguments:
|
|
|
|
Interrupt - A pointer to the interrupt object for this interrupt.
|
|
|
|
Context - A pointer to the device object.
|
|
|
|
Return Value:
|
|
|
|
Returns TRUE if the interrupt was expected (and therefore processed);
|
|
otherwise, FALSE is returned.
|
|
|
|
--*/
|
|
|
|
{
|
|
PDEVICE_EXTENSION deviceExtension;
|
|
PDEVICE_OBJECT deviceObject;
|
|
USHORT status;
|
|
ULONG frameNumber;
|
|
BOOLEAN usbInt = FALSE;
|
|
|
|
UNREFERENCED_PARAMETER(Interrupt);
|
|
|
|
// UHCD_KdPrint((2, "'enter UHCD_InterruptService\n"));
|
|
|
|
deviceObject = (PDEVICE_OBJECT) Context;
|
|
deviceExtension = (PDEVICE_EXTENSION) deviceObject->DeviceExtension;
|
|
|
|
// Ignore ints if we are not in D0.
|
|
|
|
if (deviceExtension->CurrentDevicePowerState != PowerDeviceD0) {
|
|
goto UHCD_InterruptService_Done;
|
|
}
|
|
|
|
status = READ_PORT_USHORT(STATUS_REG(deviceExtension));
|
|
|
|
if (status & (UHCD_STATUS_USBINT |
|
|
UHCD_STATUS_USBERR |
|
|
UHCD_STATUS_RESUME |
|
|
UHCD_STATUS_HCERR |
|
|
UHCD_STATUS_PCIERR
|
|
// BUGBUG we will ignore the halt bit by itself since
|
|
// the controller will never allow us to clear the status
|
|
/*| UHCD_STATUS_HCHALT*/)) {
|
|
usbInt = TRUE;
|
|
//clear the condition
|
|
WRITE_PORT_USHORT(STATUS_REG(deviceExtension), 0xff);
|
|
} else {
|
|
goto UHCD_InterruptService_Done;
|
|
}
|
|
|
|
|
|
if ((status & (UHCD_STATUS_HCHALT | UHCD_STATUS_USBINT)) ==
|
|
(UHCD_STATUS_HCHALT | UHCD_STATUS_USBINT)) {
|
|
ULONG frame;
|
|
USHORT cmd;
|
|
|
|
frameNumber = (ULONG) READ_PORT_USHORT(FRAME_LIST_CURRENT_INDEX_REG(deviceExtension)) & 0x3ff;
|
|
|
|
frame = UHCD_GetCurrentFrame(deviceObject);
|
|
//LOGENTRY(LOG_MISC, 'Hlt!', status, deviceExtension->FrameListVirtualAddress, frameNumber);
|
|
|
|
UHCD_KdPrint((2, "'UHCD Host Controller Halted %x, frame = 0x%x - 0x%x\n", status,
|
|
frame, frameNumber));
|
|
|
|
//
|
|
// nasty error in the host controller, we will want to debug.
|
|
//
|
|
UHCD_KdPrint((0, "'HC HALTED! attempting to recover\n"));
|
|
|
|
// attempt to recover
|
|
WRITE_PORT_USHORT(STATUS_REG(deviceExtension), 0xff);
|
|
cmd = READ_PORT_USHORT(COMMAND_REG(deviceExtension));
|
|
cmd |= UHCD_CMD_RUN;
|
|
WRITE_PORT_USHORT(COMMAND_REG(deviceExtension), cmd);
|
|
usbInt = TRUE;
|
|
|
|
return usbInt;
|
|
}
|
|
|
|
|
|
//
|
|
// Process the interrupt
|
|
//
|
|
|
|
if (status & UHCD_STATUS_RESUME) {
|
|
|
|
//
|
|
// system wakeup interrupt
|
|
//
|
|
|
|
#ifdef MAX_DEBUG
|
|
TEST_TRAP();
|
|
#endif
|
|
} else if (status & UHCD_STATUS_USBINT) {
|
|
|
|
//
|
|
// Interrupt because a TD completed
|
|
//
|
|
|
|
// UHCD_KdPrint((2, "'UHCD_InterruptService status = %x\n", status));
|
|
|
|
#ifdef DEBUG_LOG
|
|
// if (TrapOn > 0) {
|
|
// USHORT portStatus;
|
|
// // check for port disable
|
|
// portStatus = READ_PORT_USHORT(PORT1_REG(deviceExtension));
|
|
// if (portStatus & 0x0008) {
|
|
frameNumber = (ULONG) READ_PORT_USHORT(FRAME_LIST_CURRENT_INDEX_REG(deviceExtension)) & 0x3ff;
|
|
////
|
|
//// UHCD_KdPrint((2, "'Port Disabled frame = 0x%x\n", frameNumber));
|
|
////
|
|
// TRAP();
|
|
// }
|
|
|
|
// portStatus = READ_PORT_USHORT(PORT2_REG(deviceExtension));
|
|
// if (portStatus & 0x0008) {
|
|
// frameNumber = (ULONG) READ_PORT_USHORT(FRAME_LIST_CURRENT_INDEX_REG(deviceExtension)) & 0x3ff;
|
|
////
|
|
//// UHCD_KdPrint((2, "'Port Disabled frame = 0x%x\n", frameNumber));
|
|
////
|
|
// TRAP();
|
|
// }
|
|
// }
|
|
#endif
|
|
|
|
// This code maintains the 32-bit frame counter
|
|
|
|
frameNumber = (ULONG) READ_PORT_USHORT(FRAME_LIST_CURRENT_INDEX_REG(deviceExtension));
|
|
|
|
// did the sign bit change ?
|
|
if ((deviceExtension->LastFrame ^ frameNumber) & 0x0400) {
|
|
// Yes
|
|
deviceExtension->FrameHighPart += 0x0800 -
|
|
((frameNumber ^ deviceExtension->FrameHighPart) & 0x0400);
|
|
}
|
|
|
|
// remember the last frame number
|
|
deviceExtension->LastFrame = frameNumber;
|
|
|
|
|
|
//***
|
|
//
|
|
// start at the last frame processed
|
|
//
|
|
|
|
{
|
|
ULONG i, j;
|
|
ULONG currentFrame, highPart;
|
|
|
|
highPart = deviceExtension->FrameHighPart;
|
|
|
|
// get 11-bit frame number, high 17-bits are 0
|
|
//frameNumber = (ULONG) READ_PORT_USHORT(FRAME_LIST_CURRENT_INDEX_REG(deviceExtension));
|
|
|
|
currentFrame = ((frameNumber & 0x0bff) | highPart) +
|
|
((frameNumber ^ highPart) & 0x0400);
|
|
|
|
// UHCD_KdPrint((2, "'currentFrame = %x\n", currentFrame));
|
|
|
|
if (currentFrame-deviceExtension->LastFrameProcessed > 1024) {
|
|
|
|
deviceExtension->Stats.ScheduleOverrunCount++;
|
|
|
|
// we have a schedule overrun,
|
|
// this means it has been more that 1000 ms since our last
|
|
// interrupt, because of this the iso entries in the schedule
|
|
// are invalid -- we need to remove all of them and start over
|
|
|
|
// UHCD_KdPrint((2, "'schedule overrun currentFrame = %d, lastframe = %d \n",
|
|
// currentFrame, deviceExtension->LastFrameProcessed));
|
|
// TRAP();
|
|
|
|
// first remove all iso TDs from the list
|
|
for (j=0; j<FRAME_LIST_SIZE; j++) {
|
|
|
|
// put back the physical address that was there before we started
|
|
// adding isoch descriptors.
|
|
|
|
*( ((PULONG) (deviceExtension->FrameListVirtualAddress) + j) ) =
|
|
*( ((PULONG) (deviceExtension->FrameListCopyVirtualAddress) + j) );
|
|
|
|
#if DBG
|
|
*( deviceExtension->IsoList + j ) = 0;
|
|
#endif
|
|
}
|
|
|
|
deviceExtension->LastFrameProcessed = currentFrame;
|
|
}
|
|
|
|
{
|
|
#ifdef FAST_ISO
|
|
PUHCD_ENDPOINT endpoint;
|
|
|
|
endpoint = UHCD_GetLastFastIsoEndpoint(deviceObject);
|
|
#endif /* FAST_ISO */
|
|
|
|
for (i=deviceExtension->LastFrameProcessed+1; i<currentFrame; i++) {
|
|
// remove isoch TDs for frame i;
|
|
j = i % FRAME_LIST_SIZE;
|
|
|
|
// put back the physical address that was there before we started
|
|
// adding isoch descriptors.
|
|
|
|
*( ((PULONG) (deviceExtension->FrameListVirtualAddress) + j) ) =
|
|
*( ((PULONG) (deviceExtension->FrameListCopyVirtualAddress) + j) );
|
|
|
|
#if DBG
|
|
*( deviceExtension->IsoList + j ) = 0;
|
|
#endif
|
|
|
|
#ifdef FAST_ISO
|
|
if (endpoint) {
|
|
|
|
UHCD_CleanupFastIsoTD(deviceObject,
|
|
endpoint,
|
|
j,
|
|
TRUE);
|
|
|
|
}
|
|
#endif /* FAST_ISO */
|
|
}
|
|
|
|
}
|
|
|
|
|
|
deviceExtension->LastFrameProcessed = currentFrame-1;
|
|
}
|
|
|
|
//***
|
|
|
|
//
|
|
// Queue the DPC to complete any transfers
|
|
//
|
|
|
|
#ifdef PROFILE
|
|
{
|
|
LARGE_INTEGER time;
|
|
|
|
time = KeQueryPerformanceCounter(NULL);
|
|
UHCD_KdPrint((2, "'time.HighPart = %x time.LowPart %x\n", time.HighPart,
|
|
time.LowPart));
|
|
|
|
|
|
// LOGENTRY(LOG_MISC, 'Tim1", 0, sysTime.LowPart, sysTime.HighPart);
|
|
KeInsertQueueDpc(&deviceExtension->IsrDpc,
|
|
time.HighPart,
|
|
time.LowPart);
|
|
}
|
|
#else
|
|
KeInsertQueueDpc(&deviceExtension->IsrDpc,
|
|
NULL,
|
|
NULL);
|
|
#endif
|
|
// UHCD_KdPrint((2, "'exit UHCD_InterruptService\n"));
|
|
// USB interrupt
|
|
} else {
|
|
//
|
|
// USB Interrupt not recognized in ISR
|
|
//
|
|
UHCD_KdBreak((2, "'USB interrupt not recognized by ISR, status = %x\n", status));
|
|
// BUGBUG check why we are not handling it
|
|
}
|
|
|
|
UHCD_InterruptService_Done:
|
|
|
|
//#ifdef MAX_DEBUG
|
|
// if (!usbInt) {
|
|
// UHCD_KdPrint((2, "'Non USB interrupt, status = %x\n", status));
|
|
// }
|
|
//#endif
|
|
|
|
return usbInt;
|
|
}
|
|
|
|
|
|
VOID
|
|
UHCD_IsrDpc(
|
|
IN PKDPC Dpc,
|
|
IN PVOID DeferredContext,
|
|
IN PVOID SystemArgument1,
|
|
IN PVOID SystemArgument2
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine runs at DISPATCH_LEVEL IRQL.
|
|
|
|
Arguments:
|
|
|
|
Dpc - Pointer to the DPC object.
|
|
|
|
DeferredContext - supplies the DeviceObject.
|
|
|
|
SystemArgument1 - not used.
|
|
|
|
SystemArgument2 - not used.
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
PDEVICE_EXTENSION deviceExtension;
|
|
PDEVICE_OBJECT deviceObject;
|
|
PLIST_ENTRY listEntry;
|
|
PUHCD_ENDPOINT endpoint;
|
|
LONG slot;
|
|
BOOLEAN process = TRUE;
|
|
KIRQL irql;
|
|
|
|
// STARTPROC("IDpc");
|
|
|
|
#ifdef PROFILE
|
|
{
|
|
//
|
|
// See how long it took for our DPC to get called
|
|
//
|
|
LARGE_INTEGER time, timeNow;
|
|
LONG delta;
|
|
|
|
time.HighPart = SystemArgument1;
|
|
time.LowPart = SystemArgument2;
|
|
|
|
timeNow = KeQueryPerformanceCounter(NULL);
|
|
|
|
delta = timeNow.QuadPart - time.QuadPart;
|
|
|
|
UHCD_KdPrint((2, "'time.HighPart = %x time.LowPart %x\n", time.HighPart,
|
|
time.LowPart));
|
|
UHCD_KdPrint((2, "'timeNow.HighPart = %x timeNow.LowPart %x\n", timeNow.HighPart,
|
|
timeNow.LowPart));
|
|
UHCD_KdPrint((2, "'delta %x %x ms\n", delta, delta/((0x1234de*50)/1000)));
|
|
|
|
if (delta > ((0x1234de*50)/1000)) {
|
|
UHCD_KdTrap(("DPC delayed > 50 ms\n"));
|
|
}
|
|
|
|
//LOGENTRY(LOG_MISC, 'Tim2", timeNow - time, time, timeNow);
|
|
}
|
|
#endif
|
|
|
|
// UHCD_KdPrint((2, "'enter UHCD_IsrDpc\n"));
|
|
|
|
deviceObject = (PDEVICE_OBJECT) DeferredContext;
|
|
deviceExtension = (PDEVICE_EXTENSION) deviceObject->DeviceExtension;
|
|
|
|
//
|
|
// Walk through the Endpoint list checking for
|
|
// any endpoints that have transfers that need completing
|
|
//
|
|
|
|
LOCK_ENDPOINT_LIST(deviceExtension, irql);
|
|
|
|
if (deviceExtension->EndpointListBusy) {
|
|
process = FALSE;
|
|
} else {
|
|
deviceExtension->EndpointListBusy = TRUE;
|
|
}
|
|
|
|
UNLOCK_ENDPOINT_LIST(deviceExtension, irql);
|
|
|
|
if (process) {
|
|
|
|
//
|
|
// we now have exclusive access to the endpoint list
|
|
//
|
|
|
|
listEntry = &deviceExtension->EndpointList;
|
|
if (!IsListEmpty(listEntry)) {
|
|
listEntry = deviceExtension->EndpointList.Flink;
|
|
}
|
|
LOGENTRY(LOG_MISC, 'EPl+', listEntry,
|
|
&deviceExtension->EndpointList, 0);
|
|
|
|
while (listEntry != &deviceExtension->EndpointList) {
|
|
ULONG cnt = 0;
|
|
|
|
endpoint = CONTAINING_RECORD(listEntry,
|
|
UHCD_ENDPOINT,
|
|
ListEntry);
|
|
ASSERT_ENDPOINT(endpoint);
|
|
// LOGENTRY(LOG_MISC, 'prEP', endpoint,
|
|
// &deviceExtension->EndpointList, listEntry);
|
|
|
|
listEntry = endpoint->ListEntry.Flink;
|
|
|
|
//
|
|
// Scan active transfer slots and process any transfers
|
|
// that have been programmed into the hardware.
|
|
//
|
|
|
|
for (slot=0; slot<endpoint->MaxRequests; slot++) {
|
|
|
|
//
|
|
// If we have a transfer in the slot call the completion
|
|
// handler.
|
|
//
|
|
|
|
if (endpoint->ActiveTransfers[slot]) {
|
|
cnt++;
|
|
LOGENTRY(LOG_MISC, 'epWk', endpoint, slot, endpoint->ActiveTransfers[slot]);
|
|
|
|
// only call the completer if no double buffer
|
|
// endpoints
|
|
if (!(endpoint->EndpointFlags & EPFLAG_DBL_BUFFER)) {
|
|
LOGENTRY(LOG_MISC, 'cPTR', endpoint,
|
|
slot, endpoint->ActiveTransfers[slot]);
|
|
UHCD_CompleteTransferDPC(deviceObject, endpoint, slot);
|
|
}
|
|
}
|
|
}
|
|
|
|
// if we had no transfers see if we can idle the endpoint
|
|
if (cnt) {
|
|
UHCD_EndpointWakeup(deviceObject, endpoint);
|
|
} else {
|
|
UHCD_EndpointIdle(deviceObject, endpoint);
|
|
}
|
|
|
|
//
|
|
// For DBL_BUFFER transfers, we don't do the active abort
|
|
// until we call the worker code. The worker code will also
|
|
// clear the flag for us. So, if it is a DBL_BUFFER, don't
|
|
// clear the flag yet.
|
|
//
|
|
|
|
|
|
if (!(endpoint->EndpointFlags & EPFLAG_DBL_BUFFER)) {
|
|
//
|
|
// safe to clear the ABORT_ACTIVE_TRANSFERS flag
|
|
// this will allow a reset_endpoint to succeed.
|
|
// LOGENTRY(LOG_MISC, 'clrA', endpoint, 0, 0);
|
|
//
|
|
|
|
CLR_EPFLAG(endpoint, EPFLAG_ABORT_ACTIVE_TRANSFERS);
|
|
}
|
|
|
|
|
|
// does this endpoint need attention, we mail have bailed
|
|
// because endpointworker was busy, if so process it now
|
|
|
|
if (endpoint->EndpointFlags & EPFLAG_HAVE_WORK) {
|
|
UHCD_EndpointWorker(deviceObject, endpoint);
|
|
}
|
|
|
|
}
|
|
|
|
LOGENTRY(LOG_MISC, 'EPl-', listEntry,
|
|
&deviceExtension->EndpointList, 0);
|
|
|
|
|
|
// now walk the list looking for idle bulk
|
|
{
|
|
ULONG idleBulkEndpoints = 0;
|
|
ULONG bulkEndpoints = 0;
|
|
|
|
listEntry = &deviceExtension->EndpointList;
|
|
if (!IsListEmpty(listEntry)) {
|
|
listEntry = deviceExtension->EndpointList.Flink;
|
|
}
|
|
LOGENTRY(LOG_MISC, 'EPl+', listEntry,
|
|
&deviceExtension->EndpointList, 0);
|
|
|
|
while (listEntry != &deviceExtension->EndpointList) {
|
|
BOOLEAN idle = TRUE;
|
|
|
|
endpoint = CONTAINING_RECORD(listEntry,
|
|
UHCD_ENDPOINT,
|
|
ListEntry);
|
|
ASSERT_ENDPOINT(endpoint);
|
|
LOGENTRY(LOG_MISC, 'prEP', endpoint,
|
|
&deviceExtension->EndpointList, listEntry);
|
|
|
|
listEntry = endpoint->ListEntry.Flink;
|
|
|
|
// see if this ep is closed, if so remove it and
|
|
// it on the closed list
|
|
if (endpoint->EndpointFlags & EPFLAG_EP_CLOSED) {
|
|
|
|
LOGENTRY(LOG_MISC, 'epCL', endpoint,
|
|
&deviceExtension->EndpointList, listEntry);
|
|
|
|
RemoveEntryList(&endpoint->ListEntry);
|
|
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// Scan active transfer slots and process any transfers
|
|
// thet have been programmed into the hardware.
|
|
//
|
|
|
|
for (slot=0; slot<endpoint->MaxRequests; slot++) {
|
|
|
|
//
|
|
// If we have a transfer in the slot we are not idle
|
|
//
|
|
|
|
if (endpoint->ActiveTransfers[slot]) {
|
|
idle = FALSE;
|
|
}
|
|
}
|
|
|
|
|
|
if (endpoint->Type == USB_ENDPOINT_TYPE_BULK) {
|
|
bulkEndpoints++;
|
|
if (idle) {
|
|
idleBulkEndpoints++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (bulkEndpoints && bulkEndpoints == idleBulkEndpoints) {
|
|
// no activity on the bulk endpoints
|
|
// disable BW reclimation.
|
|
UHCD_BW_Reclimation(deviceObject, FALSE);
|
|
}
|
|
}
|
|
|
|
//
|
|
// See if we can free any endpoint structures
|
|
//
|
|
|
|
// walk through the closed endpoint list, if we find an endpoint that has
|
|
// been freed in a previous frame then go ahead and release its
|
|
// resources.
|
|
|
|
while (!IsListEmpty(&deviceExtension->ClosedEndpointList)) {
|
|
ULONG cnt;
|
|
|
|
listEntry = RemoveHeadList( &deviceExtension->ClosedEndpointList);
|
|
|
|
endpoint = CONTAINING_RECORD(listEntry,
|
|
UHCD_ENDPOINT,
|
|
ListEntry);
|
|
ASSERT_ENDPOINT(endpoint);
|
|
|
|
if (UHCD_GetCurrentFrame(deviceObject) <= endpoint->FrameToClose) {
|
|
//
|
|
// put it back and get out
|
|
//
|
|
InsertHeadList(&deviceExtension->ClosedEndpointList, &endpoint->ListEntry);
|
|
|
|
break;
|
|
}
|
|
|
|
// free the endpoint resources
|
|
UHCD_KdPrint((2, "'UHCD_IsrDpc free endpoint %x\n", endpoint));
|
|
|
|
if (endpoint->EndpointFlags & EPFLAG_DBL_BUFFER) {
|
|
UHCD_UnInitializeNoDMAEndpoint(deviceObject,
|
|
endpoint);
|
|
}
|
|
|
|
UHCD_ASSERT(!(endpoint->EndpointFlags & EPFLAG_FAST_ISO));
|
|
|
|
UHCD_FreeBandwidth(deviceObject, endpoint, endpoint->Offset);
|
|
|
|
for (cnt=0; cnt< endpoint->MaxRequests; cnt++) {
|
|
|
|
UHCD_FreeHardwareDescriptors(deviceObject,
|
|
endpoint->HardwareDescriptorList[cnt]);
|
|
}
|
|
|
|
#if DBG
|
|
//UHCD_BufferPoolCheck(deviceObject);
|
|
#endif
|
|
|
|
RETHEAP(endpoint);
|
|
}
|
|
|
|
// now check the lookaside list and add any endpoints on it
|
|
while (!IsListEmpty(&deviceExtension->EndpointLookAsideList)) {
|
|
listEntry = RemoveHeadList(&deviceExtension->EndpointLookAsideList);
|
|
endpoint = CONTAINING_RECORD(listEntry,
|
|
UHCD_ENDPOINT,
|
|
ListEntry);
|
|
ASSERT_ENDPOINT(endpoint);
|
|
InsertHeadList(&deviceExtension->EndpointList, &endpoint->ListEntry);
|
|
}
|
|
|
|
LOCK_ENDPOINT_LIST(deviceExtension, irql);
|
|
|
|
deviceExtension->EndpointListBusy = FALSE;
|
|
|
|
UNLOCK_ENDPOINT_LIST(deviceExtension, irql);
|
|
}
|
|
|
|
#ifdef FAST_ISO
|
|
// walk the fastiso list and complete any transfers
|
|
// if the last frame has pssed
|
|
{
|
|
listEntry = &deviceExtension->FastIsoTransferList;
|
|
if (!IsListEmpty(listEntry)) {
|
|
listEntry = deviceExtension->FastIsoTransferList.Flink;
|
|
}
|
|
LOGENTRY(LOG_MISC, 'FIl+', listEntry,
|
|
&deviceExtension->FastIsoTransferList, 0);
|
|
|
|
while (listEntry != &deviceExtension->FastIsoTransferList) {
|
|
|
|
PIRP irp;
|
|
PHCD_URB urb;
|
|
ULONG cf, lastFrame;
|
|
|
|
urb = (PHCD_URB) CONTAINING_RECORD(
|
|
listEntry,
|
|
struct _URB_HCD_COMMON_TRANSFER,
|
|
hca.HcdListEntry);
|
|
|
|
listEntry = HCD_AREA(urb).HcdListEntry.Flink;
|
|
|
|
lastFrame = urb->UrbIsochronousTransfer.StartFrame+1;
|
|
// urb->UrbIsochronousTransfer.NumberOfPackets;
|
|
|
|
cf = UHCD_GetCurrentFrame(deviceObject);
|
|
|
|
LOGENTRY(LOG_MISC, 'FIck', urb, cf, lastFrame);
|
|
|
|
if (cf >= lastFrame) {
|
|
|
|
LOGENTRY(LOG_MISC, 'FIcp', urb, cf, lastFrame);
|
|
|
|
RemoveEntryList(&HCD_AREA(urb).HcdListEntry);
|
|
|
|
irp = HCD_AREA(urb).HcdIrp;
|
|
|
|
UHCD_CompleteIrp(deviceObject,
|
|
irp,
|
|
STATUS_SUCCESS,
|
|
0,
|
|
urb);
|
|
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
#endif /* FAST_ISO */
|
|
|
|
// ENDPROC("IDpc");
|
|
|
|
// UHCD_KdPrint((2, "'exit UHCD_IsrDpc\n"));
|
|
}
|
|
|
|
|
|
VOID
|
|
UHCD_RequestInterrupt(
|
|
IN PDEVICE_OBJECT DeviceObject,
|
|
IN LONG FrameNumber
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine triggers a hradware interrupt on a specific
|
|
USB frame number.
|
|
|
|
Arguments:
|
|
|
|
DeviceObject - Supplies the device object.
|
|
|
|
Frame - frame to generate intrerrupt on, a negative value
|
|
indicates relative to the current frame.
|
|
|
|
Return Value:
|
|
|
|
None.
|
|
|
|
--*/
|
|
|
|
{
|
|
ULONG requestFrameNumber;
|
|
PDEVICE_EXTENSION deviceExtension;
|
|
PHW_TRANSFER_DESCRIPTOR transferDescriptor;
|
|
ULONG i;
|
|
|
|
UHCD_KdPrint((2, "'enter UHCD_RequestInterrupt\n"));
|
|
|
|
deviceExtension = DeviceObject->DeviceExtension;
|
|
|
|
//
|
|
// Allocate a TD we can use for this request
|
|
//
|
|
// NOTE:
|
|
// First two TDs are dedicated to detecting frame rollover.
|
|
//
|
|
|
|
for (i=UHCD_FIRST_TRIGGER_TD; i<MAX_TDS_PER_ENDPOINT; i++) {
|
|
transferDescriptor =
|
|
&deviceExtension->TriggerTDList->TDs[i];
|
|
|
|
if (deviceExtension->LastFrameProcessed >
|
|
transferDescriptor->Frame) {
|
|
break;
|
|
}
|
|
|
|
transferDescriptor = NULL;
|
|
}
|
|
|
|
if (transferDescriptor == NULL) {
|
|
|
|
//
|
|
// no TDS available for interrupt request, this means enough
|
|
// interrupts are happening that we'll be OK -- worst case
|
|
// is we'll get an interrupt on frame rollover.
|
|
//
|
|
UHCD_KdBreak((2, "'no tds for interrupt request\n"));
|
|
|
|
goto UHCD_RequestInterrupt_Done;
|
|
}
|
|
|
|
if (FrameNumber < 0) {
|
|
requestFrameNumber = UHCD_GetCurrentFrame(DeviceObject) -
|
|
FrameNumber;
|
|
} else {
|
|
requestFrameNumber = FrameNumber;
|
|
}
|
|
|
|
//
|
|
// all we do here is put a dummy isoch TD in the schedule at
|
|
// the requested frame number
|
|
//
|
|
|
|
LOGENTRY(LOG_MISC, 'REQi', requestFrameNumber, FrameNumber,
|
|
transferDescriptor);
|
|
|
|
//
|
|
// Make sure we can schedule it
|
|
//
|
|
|
|
if (requestFrameNumber >
|
|
deviceExtension->LastFrameProcessed+1+FRAME_LIST_SIZE-1) {
|
|
|
|
// note: if the request is to far in advance.
|
|
|
|
LOGENTRY(LOG_MISC, 'REQf', FrameNumber, requestFrameNumber,
|
|
(deviceExtension->LastFrameProcessed+1+FRAME_LIST_SIZE-1));
|
|
|
|
// if the request is too far in advance we'll just let it be handled
|
|
// by the rollover interrupts.
|
|
} else {
|
|
|
|
transferDescriptor->Active = 0;
|
|
transferDescriptor->MaxLength = UHCD_SYSTEM_TO_USB_BUFFER_LENGTH(0);
|
|
transferDescriptor->InterruptOnComplete = 1;
|
|
transferDescriptor->Frame = requestFrameNumber;
|
|
#ifdef VIA_HC
|
|
transferDescriptor->PID = USB_IN_PID;
|
|
#endif /* VIA_HC */
|
|
|
|
UHCD_InsertIsochDescriptor(DeviceObject,
|
|
transferDescriptor,
|
|
requestFrameNumber);
|
|
}
|
|
|
|
UHCD_RequestInterrupt_Done:
|
|
|
|
UHCD_KdPrint((2, "'exit UHCD_RequestInterrupt\n"));
|
|
}
|