[USB-BRINGUP-TRUNK]
[reactos.git] / drivers / usb / usbohci / hardware.cpp
1 /*
2 * PROJECT: ReactOS Universal Serial Bus Bulk Enhanced Host Controller Interface
3 * LICENSE: GPL - See COPYING in the top level directory
4 * FILE: drivers/usb/usbohci/hcd_controller.cpp
5 * PURPOSE: USB OHCI device driver.
6 * PROGRAMMERS:
7 * Michael Martin (michael.martin@reactos.org)
8 * Johannes Anderwald (johannes.anderwald@reactos.org)
9 */
10
11 #define INITGUID
12 #include "usbohci.h"
13 #include "hardware.h"
14
15 typedef VOID __stdcall HD_INIT_CALLBACK(IN PVOID CallBackContext);
16
17 BOOLEAN
18 NTAPI
19 InterruptServiceRoutine(
20 IN PKINTERRUPT Interrupt,
21 IN PVOID ServiceContext);
22
23 VOID
24 NTAPI
25 OhciDefferedRoutine(
26 IN PKDPC Dpc,
27 IN PVOID DeferredContext,
28 IN PVOID SystemArgument1,
29 IN PVOID SystemArgument2);
30
31 VOID
32 NTAPI
33 StatusChangeWorkItemRoutine(PVOID Context);
34
35 class CUSBHardwareDevice : public IUSBHardwareDevice
36 {
37 public:
38 STDMETHODIMP QueryInterface( REFIID InterfaceId, PVOID* Interface);
39
40 STDMETHODIMP_(ULONG) AddRef()
41 {
42 InterlockedIncrement(&m_Ref);
43 return m_Ref;
44 }
45 STDMETHODIMP_(ULONG) Release()
46 {
47 InterlockedDecrement(&m_Ref);
48
49 if (!m_Ref)
50 {
51 delete this;
52 return 0;
53 }
54 return m_Ref;
55 }
56 // com
57 NTSTATUS Initialize(PDRIVER_OBJECT DriverObject, PDEVICE_OBJECT FunctionalDeviceObject, PDEVICE_OBJECT PhysicalDeviceObject, PDEVICE_OBJECT LowerDeviceObject);
58 NTSTATUS PnpStart(PCM_RESOURCE_LIST RawResources, PCM_RESOURCE_LIST TranslatedResources);
59 NTSTATUS PnpStop(void);
60 NTSTATUS HandlePower(PIRP Irp);
61 NTSTATUS GetDeviceDetails(PUSHORT VendorId, PUSHORT DeviceId, PULONG NumberOfPorts, PULONG Speed);
62 NTSTATUS GetBulkHeadEndpointDescriptor(struct _OHCI_ENDPOINT_DESCRIPTOR ** OutDescriptor);
63 NTSTATUS GetControlHeadEndpointDescriptor(struct _OHCI_ENDPOINT_DESCRIPTOR ** OutDescriptor);
64 NTSTATUS GetInterruptEndpointDescriptors(struct _OHCI_ENDPOINT_DESCRIPTOR *** OutDescriptor);
65 NTSTATUS GetIsochronousHeadEndpointDescriptor(struct _OHCI_ENDPOINT_DESCRIPTOR ** OutDescriptor);
66 VOID HeadEndpointDescriptorModified(ULONG HeadType);
67
68
69 NTSTATUS GetDMA(OUT struct IDMAMemoryManager **m_DmaManager);
70 NTSTATUS GetUSBQueue(OUT struct IUSBQueue **OutUsbQueue);
71
72 NTSTATUS StartController();
73 NTSTATUS StopController();
74 NTSTATUS ResetController();
75 NTSTATUS ResetPort(ULONG PortIndex);
76
77 NTSTATUS GetPortStatus(ULONG PortId, OUT USHORT *PortStatus, OUT USHORT *PortChange);
78 NTSTATUS ClearPortStatus(ULONG PortId, ULONG Status);
79 NTSTATUS SetPortFeature(ULONG PortId, ULONG Feature);
80
81 VOID SetStatusChangeEndpointCallBack(PVOID CallBack, PVOID Context);
82
83 KIRQL AcquireDeviceLock(void);
84 VOID ReleaseDeviceLock(KIRQL OldLevel);
85 virtual VOID GetCurrentFrameNumber(PULONG FrameNumber);
86 // local
87 BOOLEAN InterruptService();
88 NTSTATUS InitializeController();
89 NTSTATUS AllocateEndpointDescriptor(OUT POHCI_ENDPOINT_DESCRIPTOR *OutDescriptor);
90
91 // friend function
92 friend BOOLEAN NTAPI InterruptServiceRoutine(IN PKINTERRUPT Interrupt, IN PVOID ServiceContext);
93 friend VOID NTAPI OhciDefferedRoutine(IN PKDPC Dpc, IN PVOID DeferredContext, IN PVOID SystemArgument1, IN PVOID SystemArgument2);
94 friend VOID NTAPI StatusChangeWorkItemRoutine(PVOID Context);
95 // constructor / destructor
96 CUSBHardwareDevice(IUnknown *OuterUnknown){}
97 virtual ~CUSBHardwareDevice(){}
98
99 protected:
100 LONG m_Ref; // reference count
101 PDRIVER_OBJECT m_DriverObject; // driver object
102 PDEVICE_OBJECT m_PhysicalDeviceObject; // pdo
103 PDEVICE_OBJECT m_FunctionalDeviceObject; // fdo (hcd controller)
104 PDEVICE_OBJECT m_NextDeviceObject; // lower device object
105 KSPIN_LOCK m_Lock; // hardware lock
106 PKINTERRUPT m_Interrupt; // interrupt object
107 KDPC m_IntDpcObject; // dpc object for deferred isr processing
108 PVOID VirtualBase; // virtual base for memory manager
109 PHYSICAL_ADDRESS PhysicalAddress; // physical base for memory manager
110 PULONG m_Base; // OHCI operational port base registers
111 PDMA_ADAPTER m_Adapter; // dma adapter object
112 ULONG m_MapRegisters; // map registers count
113 USHORT m_VendorID; // vendor id
114 USHORT m_DeviceID; // device id
115 PUSBQUEUE m_UsbQueue; // usb request queue
116 POHCIHCCA m_HCCA; // hcca virtual base
117 PHYSICAL_ADDRESS m_HCCAPhysicalAddress; // hcca physical address
118 POHCI_ENDPOINT_DESCRIPTOR m_ControlEndpointDescriptor; // dummy control endpoint descriptor
119 POHCI_ENDPOINT_DESCRIPTOR m_BulkEndpointDescriptor; // dummy control endpoint descriptor
120 POHCI_ENDPOINT_DESCRIPTOR m_IsoEndpointDescriptor; // iso endpoint descriptor
121 POHCI_ENDPOINT_DESCRIPTOR m_InterruptEndpoints[OHCI_STATIC_ENDPOINT_COUNT]; // endpoints for interrupt / iso transfers
122 ULONG m_NumberOfPorts; // number of ports
123 OHCI_PORT_STATUS m_PortStatus[OHCI_MAX_PORT_COUNT]; // port change status
124 PDMAMEMORYMANAGER m_MemoryManager; // memory manager
125 HD_INIT_CALLBACK* m_SCECallBack; // status change callback routine
126 PVOID m_SCEContext; // status change callback routine context
127 WORK_QUEUE_ITEM m_StatusChangeWorkItem; // work item for status change callback
128 ULONG m_SyncFramePhysAddr; // periodic frame list physical address
129 ULONG m_IntervalValue; // periodic interval value
130 };
131
132 //=================================================================================================
133 // COM
134 //
135 NTSTATUS
136 STDMETHODCALLTYPE
137 CUSBHardwareDevice::QueryInterface(
138 IN REFIID refiid,
139 OUT PVOID* Output)
140 {
141 if (IsEqualGUIDAligned(refiid, IID_IUnknown))
142 {
143 *Output = PVOID(PUNKNOWN(this));
144 PUNKNOWN(*Output)->AddRef();
145 return STATUS_SUCCESS;
146 }
147
148 return STATUS_UNSUCCESSFUL;
149 }
150
151 NTSTATUS
152 CUSBHardwareDevice::Initialize(
153 PDRIVER_OBJECT DriverObject,
154 PDEVICE_OBJECT FunctionalDeviceObject,
155 PDEVICE_OBJECT PhysicalDeviceObject,
156 PDEVICE_OBJECT LowerDeviceObject)
157 {
158 BUS_INTERFACE_STANDARD BusInterface;
159 PCI_COMMON_CONFIG PciConfig;
160 NTSTATUS Status;
161 ULONG BytesRead;
162
163 DPRINT1("CUSBHardwareDevice::Initialize\n");
164
165 //
166 // Create DMAMemoryManager for use with QueueHeads and Transfer Descriptors.
167 //
168 Status = CreateDMAMemoryManager(&m_MemoryManager);
169 if (!NT_SUCCESS(Status))
170 {
171 DPRINT1("Failed to create DMAMemoryManager Object\n");
172 return Status;
173 }
174
175 //
176 // Create the UsbQueue class that will handle the Asynchronous and Periodic Schedules
177 //
178 Status = CreateUSBQueue(&m_UsbQueue);
179 if (!NT_SUCCESS(Status))
180 {
181 DPRINT1("Failed to create UsbQueue!\n");
182 return Status;
183 }
184
185 //
186 // store device objects
187 //
188 m_DriverObject = DriverObject;
189 m_FunctionalDeviceObject = FunctionalDeviceObject;
190 m_PhysicalDeviceObject = PhysicalDeviceObject;
191 m_NextDeviceObject = LowerDeviceObject;
192
193 //
194 // initialize device lock
195 //
196 KeInitializeSpinLock(&m_Lock);
197
198 //
199 // intialize status change work item
200 //
201 ExInitializeWorkItem(&m_StatusChangeWorkItem, StatusChangeWorkItemRoutine, PVOID(this));
202
203 m_VendorID = 0;
204 m_DeviceID = 0;
205
206 Status = GetBusInterface(PhysicalDeviceObject, &BusInterface);
207 if (!NT_SUCCESS(Status))
208 {
209 DPRINT1("Failed to get BusInteface!\n");
210 return Status;
211 }
212
213 BytesRead = (*BusInterface.GetBusData)(BusInterface.Context,
214 PCI_WHICHSPACE_CONFIG,
215 &PciConfig,
216 0,
217 PCI_COMMON_HDR_LENGTH);
218
219 if (BytesRead != PCI_COMMON_HDR_LENGTH)
220 {
221 DPRINT1("Failed to get pci config information!\n");
222 return STATUS_SUCCESS;
223 }
224
225 if (!(PciConfig.Command & PCI_ENABLE_BUS_MASTER))
226 {
227 DPRINT1("PCI Configuration shows this as a non Bus Mastering device!\n");
228 }
229
230 m_VendorID = PciConfig.VendorID;
231 m_DeviceID = PciConfig.DeviceID;
232
233 return STATUS_SUCCESS;
234 }
235
236 NTSTATUS
237 CUSBHardwareDevice::PnpStart(
238 PCM_RESOURCE_LIST RawResources,
239 PCM_RESOURCE_LIST TranslatedResources)
240 {
241 ULONG Index;
242 PCM_PARTIAL_RESOURCE_DESCRIPTOR ResourceDescriptor;
243 DEVICE_DESCRIPTION DeviceDescription;
244 PVOID ResourceBase;
245 NTSTATUS Status;
246 ULONG Version;
247
248 DPRINT1("CUSBHardwareDevice::PnpStart\n");
249 for(Index = 0; Index < TranslatedResources->List[0].PartialResourceList.Count; Index++)
250 {
251 //
252 // get resource descriptor
253 //
254 ResourceDescriptor = &TranslatedResources->List[0].PartialResourceList.PartialDescriptors[Index];
255
256 switch(ResourceDescriptor->Type)
257 {
258 case CmResourceTypeInterrupt:
259 {
260 KeInitializeDpc(&m_IntDpcObject,
261 OhciDefferedRoutine,
262 this);
263
264 Status = IoConnectInterrupt(&m_Interrupt,
265 InterruptServiceRoutine,
266 (PVOID)this,
267 NULL,
268 ResourceDescriptor->u.Interrupt.Vector,
269 (KIRQL)ResourceDescriptor->u.Interrupt.Level,
270 (KIRQL)ResourceDescriptor->u.Interrupt.Level,
271 (KINTERRUPT_MODE)(ResourceDescriptor->Flags & CM_RESOURCE_INTERRUPT_LATCHED),
272 (ResourceDescriptor->ShareDisposition != CmResourceShareDeviceExclusive),
273 ResourceDescriptor->u.Interrupt.Affinity,
274 FALSE);
275
276 if (!NT_SUCCESS(Status))
277 {
278 //
279 // failed to register interrupt
280 //
281 DPRINT1("IoConnect Interrupt failed with %x\n", Status);
282 return Status;
283 }
284 break;
285 }
286 case CmResourceTypeMemory:
287 {
288 //
289 // get resource base
290 //
291 ResourceBase = MmMapIoSpace(ResourceDescriptor->u.Memory.Start, ResourceDescriptor->u.Memory.Length, MmNonCached);
292 if (!ResourceBase)
293 {
294 //
295 // failed to map registers
296 //
297 DPRINT1("MmMapIoSpace failed\n");
298 return STATUS_INSUFFICIENT_RESOURCES;
299 }
300
301 //
302 // Get controllers capabilities
303 //
304 Version = READ_REGISTER_ULONG((PULONG)((ULONG_PTR)ResourceBase + OHCI_REVISION_OFFSET));
305
306 DPRINT1("Version %x\n", Version);
307
308 //
309 // Store Resource base
310 //
311 m_Base = (PULONG)ResourceBase;
312 break;
313 }
314 }
315 }
316
317
318 //
319 // zero device description
320 //
321 RtlZeroMemory(&DeviceDescription, sizeof(DEVICE_DESCRIPTION));
322
323 //
324 // initialize device description
325 //
326 DeviceDescription.Version = DEVICE_DESCRIPTION_VERSION;
327 DeviceDescription.Master = TRUE;
328 DeviceDescription.ScatterGather = TRUE;
329 DeviceDescription.Dma32BitAddresses = TRUE;
330 DeviceDescription.DmaWidth = Width32Bits;
331 DeviceDescription.InterfaceType = PCIBus;
332 DeviceDescription.MaximumLength = MAXULONG;
333
334 //
335 // get dma adapter
336 //
337 m_Adapter = IoGetDmaAdapter(m_PhysicalDeviceObject, &DeviceDescription, &m_MapRegisters);
338 if (!m_Adapter)
339 {
340 //
341 // failed to get dma adapter
342 //
343 DPRINT1("Failed to acquire dma adapter\n");
344 return STATUS_INSUFFICIENT_RESOURCES;
345 }
346
347 //
348 // Create Common Buffer
349 //
350 VirtualBase = m_Adapter->DmaOperations->AllocateCommonBuffer(m_Adapter,
351 PAGE_SIZE * 4,
352 &PhysicalAddress,
353 FALSE);
354 if (!VirtualBase)
355 {
356 DPRINT1("Failed to allocate a common buffer\n");
357 return STATUS_INSUFFICIENT_RESOURCES;
358 }
359
360 //
361 // Initialize the DMAMemoryManager
362 //
363 Status = m_MemoryManager->Initialize(this, &m_Lock, PAGE_SIZE * 4, VirtualBase, PhysicalAddress, 32);
364 if (!NT_SUCCESS(Status))
365 {
366 DPRINT1("Failed to initialize the DMAMemoryManager\n");
367 return Status;
368 }
369
370 //
371 // initializes the controller
372 //
373 Status = InitializeController();
374 if (!NT_SUCCESS(Status))
375 {
376 DPRINT1("Failed to Initialize the controller \n");
377 ASSERT(FALSE);
378 return Status;
379 }
380
381 //
382 // Initialize the UsbQueue now that we have an AdapterObject.
383 //
384 Status = m_UsbQueue->Initialize(PUSBHARDWAREDEVICE(this), m_Adapter, m_MemoryManager, NULL);
385 if (!NT_SUCCESS(Status))
386 {
387 DPRINT1("Failed to Initialize the UsbQueue\n");
388 return Status;
389 }
390
391
392 //
393 // Stop the controller before modifying schedules
394 //
395 Status = StopController();
396 if (!NT_SUCCESS(Status))
397 {
398 DPRINT1("Failed to stop the controller \n");
399 ASSERT(FALSE);
400 return Status;
401 }
402
403
404 //
405 // Start the controller
406 //
407 DPRINT1("Starting Controller\n");
408 Status = StartController();
409
410 //
411 // done
412 //
413 return Status;
414 }
415
416 NTSTATUS
417 CUSBHardwareDevice::PnpStop(void)
418 {
419 UNIMPLEMENTED
420 return STATUS_NOT_IMPLEMENTED;
421 }
422
423 NTSTATUS
424 CUSBHardwareDevice::HandlePower(
425 PIRP Irp)
426 {
427 UNIMPLEMENTED
428 return STATUS_NOT_IMPLEMENTED;
429 }
430
431 NTSTATUS
432 CUSBHardwareDevice::GetDeviceDetails(
433 OUT OPTIONAL PUSHORT VendorId,
434 OUT OPTIONAL PUSHORT DeviceId,
435 OUT OPTIONAL PULONG NumberOfPorts,
436 OUT OPTIONAL PULONG Speed)
437 {
438 if (VendorId)
439 {
440 //
441 // get vendor
442 //
443 *VendorId = m_VendorID;
444 }
445
446 if (DeviceId)
447 {
448 //
449 // get device id
450 //
451 *DeviceId = m_DeviceID;
452 }
453
454 if (NumberOfPorts)
455 {
456 //
457 // get number of ports
458 //
459 *NumberOfPorts = m_NumberOfPorts;
460 }
461
462 if (Speed)
463 {
464 //
465 // speed is 0x100
466 //
467 *Speed = 0x100;
468 }
469
470 return STATUS_SUCCESS;
471 }
472
473 NTSTATUS CUSBHardwareDevice::GetDMA(
474 OUT struct IDMAMemoryManager **OutDMAMemoryManager)
475 {
476 if (!m_MemoryManager)
477 return STATUS_UNSUCCESSFUL;
478 *OutDMAMemoryManager = m_MemoryManager;
479 return STATUS_SUCCESS;
480 }
481
482 NTSTATUS
483 CUSBHardwareDevice::GetUSBQueue(
484 OUT struct IUSBQueue **OutUsbQueue)
485 {
486 if (!m_UsbQueue)
487 return STATUS_UNSUCCESSFUL;
488 *OutUsbQueue = m_UsbQueue;
489 return STATUS_SUCCESS;
490 }
491
492
493 NTSTATUS
494 CUSBHardwareDevice::StartController(void)
495 {
496 ULONG Control, NumberOfPorts, Index, Descriptor, FrameInterval, Periodic;
497
498 //
499 // first write address of HCCA
500 //
501 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_HCCA_OFFSET), m_HCCAPhysicalAddress.LowPart);
502
503 //
504 // lets write physical address of dummy control endpoint descriptor
505 //
506 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_HEAD_ED_OFFSET), m_ControlEndpointDescriptor->PhysicalAddress.LowPart);
507
508 //
509 // lets write physical address of dummy bulk endpoint descriptor
510 //
511 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_BULK_HEAD_ED_OFFSET), m_BulkEndpointDescriptor->PhysicalAddress.LowPart);
512
513 //
514 // read control register
515 //
516 Control = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_OFFSET));
517
518 //
519 // remove flags
520 //
521 Control &= ~(OHCI_CONTROL_BULK_SERVICE_RATIO_MASK | OHCI_ENABLE_LIST | OHCI_HC_FUNCTIONAL_STATE_MASK | OHCI_INTERRUPT_ROUTING);
522
523 //
524 // set command status flags
525 //
526 Control |= OHCI_ENABLE_LIST | OHCI_CONTROL_BULK_RATIO_1_4 | OHCI_HC_FUNCTIONAL_STATE_OPERATIONAL;
527
528 //
529 // now start the controller
530 //
531 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_OFFSET), Control);
532
533 //
534 // wait a bit
535 //
536 KeStallExecutionProcessor(100);
537
538 //
539 // is the controller started
540 //
541 Control = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_OFFSET));
542
543 //
544 // assert that the controller has been started
545 //
546 ASSERT((Control & OHCI_HC_FUNCTIONAL_STATE_MASK) == OHCI_HC_FUNCTIONAL_STATE_OPERATIONAL);
547 ASSERT((Control & OHCI_ENABLE_LIST) == OHCI_ENABLE_LIST);
548 DPRINT1("Control %x\n", Control);
549
550 //
551 // get frame interval
552 //
553 FrameInterval = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_FRAME_INTERVAL_OFFSET));
554 FrameInterval = ((FrameInterval & OHCI_FRAME_INTERVAL_TOGGLE) ^ OHCI_FRAME_INTERVAL_TOGGLE);
555 DPRINT1("FrameInterval %x IntervalValue %x\n", FrameInterval, m_IntervalValue);
556 FrameInterval |= OHCI_FSMPS(m_IntervalValue) | m_IntervalValue;
557 DPRINT1("FrameInterval %x\n", FrameInterval);
558
559 //
560 // write frame interval
561 //
562 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_FRAME_INTERVAL_OFFSET), FrameInterval);
563
564 //
565 // 90 % periodic
566 //
567 Periodic = OHCI_PERIODIC(m_IntervalValue);
568 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_PERIODIC_START_OFFSET), Periodic);
569 DPRINT1("Periodic Start %x\n", Periodic);
570
571 //
572 // read descriptor
573 //
574 Descriptor = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_DESCRIPTOR_A_OFFSET));
575
576 //
577 // no over current protection
578 //
579 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_DESCRIPTOR_A_OFFSET), Descriptor | OHCI_RH_NO_OVER_CURRENT_PROTECTION);
580
581 //
582 // enable power on all ports
583 //
584 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_STATUS_OFFSET), OHCI_RH_LOCAL_POWER_STATUS_CHANGE);
585
586 //
587 // wait a bit
588 //
589 KeStallExecutionProcessor(10);
590
591 //
592 // write descriptor
593 //
594 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_DESCRIPTOR_A_OFFSET), Descriptor);
595
596
597
598 //
599 // retrieve number of ports
600 //
601 for(Index = 0; Index < 10; Index++)
602 {
603 //
604 // wait a bit
605 //
606 KeStallExecutionProcessor(10);
607
608 //
609 // read descriptor
610 //
611 Descriptor = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_DESCRIPTOR_A_OFFSET));
612
613 //
614 // get number of ports
615 //
616 NumberOfPorts = OHCI_RH_GET_PORT_COUNT(Descriptor);
617
618 //
619 // check if we have received the ports
620 //
621 if (NumberOfPorts)
622 break;
623 }
624
625 //
626 // sanity check
627 //
628 ASSERT(NumberOfPorts < OHCI_MAX_PORT_COUNT);
629
630 //
631 // store number of ports
632 //
633 m_NumberOfPorts = NumberOfPorts;
634
635 //
636 // print out number ports
637 //
638 DPRINT1("NumberOfPorts %lu\n", m_NumberOfPorts);
639
640
641 //
642 // now enable the interrupts
643 //
644 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_INTERRUPT_ENABLE_OFFSET), OHCI_NORMAL_INTERRUPTS | OHCI_MASTER_INTERRUPT_ENABLE);
645
646 //
647 // done
648 //
649 return STATUS_SUCCESS;
650 }
651
652 NTSTATUS
653 CUSBHardwareDevice::AllocateEndpointDescriptor(
654 OUT POHCI_ENDPOINT_DESCRIPTOR *OutDescriptor)
655 {
656 POHCI_ENDPOINT_DESCRIPTOR Descriptor;
657 PHYSICAL_ADDRESS DescriptorAddress;
658 NTSTATUS Status;
659
660 //
661 // allocate descriptor
662 //
663 Status = m_MemoryManager->Allocate(sizeof(OHCI_ENDPOINT_DESCRIPTOR), (PVOID*)&Descriptor, &DescriptorAddress);
664 if (!NT_SUCCESS(Status))
665 {
666 //
667 // failed to allocate descriptor
668 //
669 return Status;
670 }
671
672 //
673 // intialize descriptor
674 //
675 Descriptor->Flags = OHCI_ENDPOINT_SKIP;
676 Descriptor->HeadPhysicalDescriptor = 0;
677 Descriptor->NextPhysicalEndpoint = 0;
678 Descriptor->TailPhysicalDescriptor = 0;
679 Descriptor->PhysicalAddress.QuadPart = DescriptorAddress.QuadPart;
680
681 //
682 // store result
683 //
684 *OutDescriptor = Descriptor;
685
686 //
687 // done
688 //
689 return STATUS_SUCCESS;
690 }
691
692 NTSTATUS
693 CUSBHardwareDevice::GetBulkHeadEndpointDescriptor(
694 struct _OHCI_ENDPOINT_DESCRIPTOR ** OutDescriptor)
695 {
696 *OutDescriptor = m_BulkEndpointDescriptor;
697 return STATUS_SUCCESS;
698 }
699
700 NTSTATUS
701 CUSBHardwareDevice::GetInterruptEndpointDescriptors(
702 struct _OHCI_ENDPOINT_DESCRIPTOR *** OutDescriptor)
703 {
704 *OutDescriptor = m_InterruptEndpoints;
705 return STATUS_SUCCESS;
706 }
707
708 NTSTATUS
709 CUSBHardwareDevice::GetIsochronousHeadEndpointDescriptor(
710 struct _OHCI_ENDPOINT_DESCRIPTOR ** OutDescriptor)
711 {
712 //
713 // get descriptor
714 //
715 *OutDescriptor = m_IsoEndpointDescriptor;
716 return STATUS_SUCCESS;
717 }
718
719 VOID
720 CUSBHardwareDevice::HeadEndpointDescriptorModified(
721 ULONG Type)
722 {
723 ULONG Value = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_COMMAND_STATUS_OFFSET));
724
725 if (Type == USB_ENDPOINT_TYPE_CONTROL)
726 {
727 //
728 // notify controller
729 //
730 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_COMMAND_STATUS_OFFSET), Value | OHCI_CONTROL_LIST_FILLED);
731 }
732 else if (Type == USB_ENDPOINT_TYPE_BULK)
733 {
734 //
735 // notify controller
736 //
737 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_COMMAND_STATUS_OFFSET), Value | OHCI_BULK_LIST_FILLED);
738 }
739 }
740
741 NTSTATUS
742 CUSBHardwareDevice::GetControlHeadEndpointDescriptor(
743 struct _OHCI_ENDPOINT_DESCRIPTOR ** OutDescriptor)
744 {
745 *OutDescriptor = m_ControlEndpointDescriptor;
746 return STATUS_SUCCESS;
747 }
748
749 NTSTATUS
750 CUSBHardwareDevice::InitializeController()
751 {
752 NTSTATUS Status;
753 ULONG Index, Interval, IntervalIndex, InsertIndex;
754 POHCI_ENDPOINT_DESCRIPTOR Descriptor;
755
756 //
757 // first allocate the hcca area
758 //
759 Status = m_MemoryManager->Allocate(sizeof(OHCIHCCA), (PVOID*)&m_HCCA, &m_HCCAPhysicalAddress);
760 if (!NT_SUCCESS(Status))
761 {
762 //
763 // no memory
764 //
765 return Status;
766 }
767
768 //
769 // now allocate an endpoint for control transfers
770 // this endpoint will never be removed
771 //
772 Status = AllocateEndpointDescriptor(&m_ControlEndpointDescriptor);
773 if (!NT_SUCCESS(Status))
774 {
775 //
776 // no memory
777 //
778 return Status;
779 }
780
781 //
782 // now allocate an endpoint for bulk transfers
783 // this endpoint will never be removed
784 //
785 Status = AllocateEndpointDescriptor(&m_BulkEndpointDescriptor);
786 if (!NT_SUCCESS(Status))
787 {
788 //
789 // no memory
790 //
791 return Status;
792 }
793
794 //
795 // now allocate an endpoint for iso transfers
796 // this endpoint will never be removed
797 //
798 Status = AllocateEndpointDescriptor(&m_IsoEndpointDescriptor);
799 if (!NT_SUCCESS(Status))
800 {
801 //
802 // no memory
803 //
804 return Status;
805 }
806
807 //
808 // now allocate endpoint descriptors for iso / interrupt transfers interval is 1,2,4,8,16,32
809 //
810 for(Index = 0; Index < OHCI_STATIC_ENDPOINT_COUNT; Index++)
811 {
812 //
813 // allocate endpoint descriptor
814 //
815 Status = AllocateEndpointDescriptor(&Descriptor);
816 if (!NT_SUCCESS(Status))
817 {
818 //
819 // no memory
820 //
821 return Status;
822 }
823
824 //
825 // save in array
826 //
827 m_InterruptEndpoints[Index] = Descriptor;
828 }
829
830
831 //
832 // now link the descriptors, taken from Haiku
833 //
834 Interval = OHCI_BIGGEST_INTERVAL;
835 IntervalIndex = OHCI_STATIC_ENDPOINT_COUNT - 1;
836 while (Interval > 1)
837 {
838 InsertIndex = Interval / 2;
839 while (InsertIndex < OHCI_BIGGEST_INTERVAL)
840 {
841 //
842 // assign endpoint address
843 //
844 m_HCCA->InterruptTable[InsertIndex] = m_InterruptEndpoints[IntervalIndex]->PhysicalAddress.LowPart;
845 InsertIndex += Interval;
846 }
847
848 IntervalIndex--;
849 Interval /= 2;
850 }
851
852 //
853 // link all endpoint descriptors to first descriptor in array
854 //
855 m_HCCA->InterruptTable[0] = m_InterruptEndpoints[0]->PhysicalAddress.LowPart;
856 for (Index = 1; Index < OHCI_STATIC_ENDPOINT_COUNT; Index++)
857 {
858 //
859 // link descriptor
860 //
861 m_InterruptEndpoints[Index]->NextPhysicalEndpoint = m_InterruptEndpoints[0]->PhysicalAddress.LowPart;
862 }
863
864 //
865 // Now link the first endpoint to the isochronous endpoint
866 //
867 m_InterruptEndpoints[0]->NextPhysicalEndpoint = m_IsoEndpointDescriptor->PhysicalAddress.LowPart;
868
869 //
870 // set iso endpoint type
871 //
872 m_IsoEndpointDescriptor->Flags |= OHCI_ENDPOINT_ISOCHRONOUS_FORMAT;
873
874 //
875 // done
876 //
877 return STATUS_SUCCESS;
878 }
879
880 NTSTATUS
881 CUSBHardwareDevice::StopController(void)
882 {
883 ULONG Control, Reset, Status;
884 ULONG Index, FrameInterval;
885
886 //
887 // first turn off all interrupts
888 //
889 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_INTERRUPT_DISABLE_OFFSET), OHCI_ALL_INTERRUPTS);
890
891 //
892 // check context
893 //
894 Control = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_OFFSET));
895
896
897 if ((Control & OHCI_INTERRUPT_ROUTING))
898 {
899 //
900 // read command status
901 //
902 Status = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_COMMAND_STATUS_OFFSET));
903
904 //
905 // change ownership
906 //
907 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_COMMAND_STATUS_OFFSET), Status | OHCI_OWNERSHIP_CHANGE_REQUEST);
908 for(Index = 0; Index < 100; Index++)
909 {
910 //
911 // wait a bit
912 //
913 KeStallExecutionProcessor(100);
914
915 //
916 // check control
917 //
918 Control = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_OFFSET));
919 if (!(Control & OHCI_INTERRUPT_ROUTING))
920 {
921 //
922 // acquired ownership
923 //
924 break;
925 }
926 }
927
928 //
929 // if the ownership is still not changed, perform reset
930 //
931 if (Control & OHCI_INTERRUPT_ROUTING)
932 {
933 DPRINT1("SMM not responding\n");
934 //
935 // some controllers also depend on this
936 //
937 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_OFFSET), OHCI_HC_FUNCTIONAL_STATE_RESET);
938
939 //
940 // wait a bit
941 //
942 KeStallExecutionProcessor(100);
943 }
944 }
945
946
947 //
948 // have a break
949 //
950 KeStallExecutionProcessor(100);
951
952 //
953 // some controllers also depend on this
954 //
955 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_OFFSET), OHCI_HC_FUNCTIONAL_STATE_RESET);
956
957 //
958 // wait a bit
959 //
960 KeStallExecutionProcessor(100);
961
962 //
963 // read from interval
964 //
965 FrameInterval = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_FRAME_INTERVAL_OFFSET));
966
967 //
968 // store interval value for later
969 //
970 m_IntervalValue = OHCI_GET_INTERVAL_VALUE(FrameInterval);
971
972 DPRINT1("FrameInterval %x Interval %x\n", FrameInterval, m_IntervalValue);
973
974 //
975 // now reset controller
976 //
977 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_COMMAND_STATUS_OFFSET), OHCI_HOST_CONTROLLER_RESET);
978
979 //
980 // reset time is 10ms
981 //
982 for(Index = 0; Index < 10; Index++)
983 {
984 //
985 // wait a bit
986 //
987 KeStallExecutionProcessor(10);
988
989 //
990 // read command status
991 //
992 Reset = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_COMMAND_STATUS_OFFSET));
993
994 //
995 // was reset bit cleared
996 //
997 if ((Reset & OHCI_HOST_CONTROLLER_RESET) == 0)
998 {
999 //
1000 // restore the frame interval register
1001 //
1002 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_FRAME_INTERVAL_OFFSET), FrameInterval);
1003
1004 //
1005 // controller completed reset
1006 //
1007 return STATUS_SUCCESS;
1008 }
1009 }
1010
1011 //
1012 // failed to reset controller
1013 //
1014 return STATUS_UNSUCCESSFUL;
1015 }
1016
1017 NTSTATUS
1018 CUSBHardwareDevice::ResetController(void)
1019 {
1020 UNIMPLEMENTED
1021 return STATUS_NOT_IMPLEMENTED;
1022 }
1023
1024 NTSTATUS
1025 CUSBHardwareDevice::ResetPort(
1026 IN ULONG PortIndex)
1027 {
1028 ASSERT(FALSE);
1029
1030 return STATUS_SUCCESS;
1031 }
1032
1033 NTSTATUS
1034 CUSBHardwareDevice::GetPortStatus(
1035 ULONG PortId,
1036 OUT USHORT *PortStatus,
1037 OUT USHORT *PortChange)
1038 {
1039 //
1040 // FIXME: should read status from hardware
1041 //
1042 *PortStatus = m_PortStatus[PortId].PortStatus;
1043 *PortChange = m_PortStatus[PortId].PortChange;
1044 return STATUS_SUCCESS;
1045 }
1046
1047 NTSTATUS
1048 CUSBHardwareDevice::ClearPortStatus(
1049 ULONG PortId,
1050 ULONG Status)
1051 {
1052 ULONG Value;
1053
1054 DPRINT("CUSBHardwareDevice::ClearPortStatus PortId %x Feature %x\n", PortId, Status);
1055
1056 if (PortId > m_NumberOfPorts)
1057 return STATUS_UNSUCCESSFUL;
1058
1059 Value = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)));
1060 KeStallExecutionProcessor(100);
1061
1062 if (Status == C_PORT_RESET)
1063 {
1064 do
1065 {
1066 //
1067 // read port status
1068 //
1069 Value = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)));
1070
1071 if ((Value & OHCI_RH_PORTSTATUS_PRS) == 0)
1072 {
1073 //
1074 // reset is complete
1075 //
1076 break;
1077 }
1078
1079 //
1080 // wait a bit
1081 //
1082 KeStallExecutionProcessor(100);
1083
1084 //DPRINT1("Value %x Index %lu\n", Value, Index);
1085
1086 }while(TRUE);
1087
1088 //
1089 // check if reset bit is still set
1090 //
1091 if (Value & OHCI_RH_PORTSTATUS_PRS)
1092 {
1093 //
1094 // reset failed
1095 //
1096 DPRINT1("PortId %lu Reset failed\n", PortId);
1097 return STATUS_UNSUCCESSFUL;
1098 }
1099
1100 //
1101 // sanity checks
1102 //
1103 ASSERT((Value & OHCI_RH_PORTSTATUS_PRS) == 0);
1104 ASSERT((Value & OHCI_RH_PORTSTATUS_PRSC));
1105
1106 //
1107 // clear reset bit complete
1108 //
1109 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)), OHCI_RH_PORTSTATUS_PRSC);
1110
1111 //
1112 // read status register
1113 //
1114 Value = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)));
1115
1116 //
1117 // reset complete bit should be cleared
1118 //
1119 ASSERT((Value & OHCI_RH_PORTSTATUS_PRSC) == 0);
1120
1121 //
1122 // update port status
1123 //
1124 m_PortStatus[PortId].PortChange &= ~USB_PORT_STATUS_RESET;
1125
1126 //
1127 // sanity check
1128 //
1129 ASSERT((Value & OHCI_RH_PORTSTATUS_PES));
1130
1131 //
1132 // port is enabled
1133 //
1134 m_PortStatus[PortId].PortStatus |= USB_PORT_STATUS_ENABLE;
1135
1136 //
1137 // re-enable root hub change
1138 //
1139 Value = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_INTERRUPT_ENABLE_OFFSET));
1140 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_INTERRUPT_ENABLE_OFFSET), Value | OHCI_ROOT_HUB_STATUS_CHANGE);
1141
1142 }
1143
1144 if (Status == C_PORT_CONNECTION)
1145 {
1146 //
1147 // clear bit
1148 //
1149 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)), OHCI_RH_PORTSTATUS_CSC);
1150 m_PortStatus[PortId].PortChange &= ~USB_PORT_STATUS_CONNECT;
1151 }
1152
1153
1154
1155 return STATUS_SUCCESS;
1156 }
1157
1158
1159 NTSTATUS
1160 CUSBHardwareDevice::SetPortFeature(
1161 ULONG PortId,
1162 ULONG Feature)
1163 {
1164 ULONG Value;
1165
1166 DPRINT1("CUSBHardwareDevice::SetPortFeature PortId %x Feature %x\n", PortId, Feature);
1167
1168 //
1169 // read port status
1170 //
1171 Value = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)));
1172
1173
1174 if (Feature == PORT_ENABLE)
1175 {
1176 //
1177 // enable port
1178 //
1179 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)), OHCI_RH_PORTSTATUS_PES);
1180 return STATUS_SUCCESS;
1181 }
1182 else if (Feature == PORT_POWER)
1183 {
1184 //
1185 // enable power
1186 //
1187 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)), OHCI_RH_PORTSTATUS_PPS);
1188 return STATUS_SUCCESS;
1189 }
1190 else if (Feature == PORT_SUSPEND)
1191 {
1192 //
1193 // enable port
1194 //
1195 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)), OHCI_RH_PORTSTATUS_PSS);
1196 return STATUS_SUCCESS;
1197 }
1198 else if (Feature == PORT_RESET)
1199 {
1200 //
1201 // assert
1202 //
1203 ASSERT((Value & OHCI_RH_PORTSTATUS_CCS));
1204
1205 //
1206 // reset port
1207 //
1208 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_RH_PORT_STATUS(PortId)), OHCI_RH_PORTSTATUS_PRS);
1209
1210 //
1211 // wait
1212 //
1213 KeStallExecutionProcessor(100);
1214
1215 //
1216 // update cached settings
1217 //
1218 m_PortStatus[PortId].PortChange |= USB_PORT_STATUS_RESET;
1219 m_PortStatus[PortId].PortStatus &= ~USB_PORT_STATUS_ENABLE;
1220
1221 //
1222 // is there a status change callback
1223 //
1224 if (m_SCECallBack != NULL)
1225 {
1226 //
1227 // issue callback
1228 //
1229 m_SCECallBack(m_SCEContext);
1230 }
1231 }
1232 return STATUS_SUCCESS;
1233 }
1234
1235
1236
1237 VOID
1238 CUSBHardwareDevice::SetStatusChangeEndpointCallBack(
1239 PVOID CallBack,
1240 PVOID Context)
1241 {
1242 m_SCECallBack = (HD_INIT_CALLBACK*)CallBack;
1243 m_SCEContext = Context;
1244 }
1245
1246 KIRQL
1247 CUSBHardwareDevice::AcquireDeviceLock(void)
1248 {
1249 KIRQL OldLevel;
1250
1251 //
1252 // acquire lock
1253 //
1254 KeAcquireSpinLock(&m_Lock, &OldLevel);
1255
1256 //
1257 // return old irql
1258 //
1259 return OldLevel;
1260 }
1261
1262 VOID
1263 CUSBHardwareDevice::GetCurrentFrameNumber(
1264 PULONG FrameNumber)
1265 {
1266 ULONG Control;
1267 ULONG Number;
1268
1269
1270 Number = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_FRAME_INTERVAL_NUMBER_OFFSET));
1271 DPRINT1("FrameNumberInterval %x Frame %x\n", Number, m_HCCA->CurrentFrameNumber);
1272
1273 //
1274 // remove reserved bits
1275 //
1276 Number &= 0xFFFF;
1277
1278 //
1279 // store frame number
1280 //
1281 *FrameNumber = Number;
1282
1283 //
1284 // is the controller started
1285 //
1286 Control = READ_REGISTER_ULONG((PULONG)((PUCHAR)m_Base + OHCI_CONTROL_OFFSET));
1287 ASSERT((Control & OHCI_ENABLE_LIST) == OHCI_ENABLE_LIST);
1288
1289
1290 }
1291
1292 VOID
1293 CUSBHardwareDevice::ReleaseDeviceLock(
1294 KIRQL OldLevel)
1295 {
1296 KeReleaseSpinLock(&m_Lock, OldLevel);
1297 }
1298
1299 BOOLEAN
1300 NTAPI
1301 InterruptServiceRoutine(
1302 IN PKINTERRUPT Interrupt,
1303 IN PVOID ServiceContext)
1304 {
1305 CUSBHardwareDevice *This;
1306 ULONG DoneHead, Status, Acknowledge = 0;
1307
1308 //
1309 // get context
1310 //
1311 This = (CUSBHardwareDevice*) ServiceContext;
1312
1313 DPRINT("InterruptServiceRoutine\n");
1314
1315 //
1316 // get done head
1317 //
1318 DoneHead = This->m_HCCA->DoneHead;
1319
1320 //
1321 // check if zero
1322 //
1323 if (DoneHead == 0)
1324 {
1325 //
1326 // the interrupt was not caused by DoneHead update
1327 // check if something important happened
1328 //
1329 Status = READ_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_INTERRUPT_STATUS_OFFSET)) & READ_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_INTERRUPT_ENABLE_OFFSET)) & (~OHCI_WRITEBACK_DONE_HEAD);
1330 if (Status == 0)
1331 {
1332 //
1333 // nothing happened, appears to be shared interrupt
1334 //
1335 return FALSE;
1336 }
1337 }
1338 else
1339 {
1340 //
1341 // DoneHead update happened, check if there are other events too
1342 //
1343 Status = OHCI_WRITEBACK_DONE_HEAD;
1344
1345 //
1346 // since ed descriptors are 16 byte aligned, the controller sets the lower bits if there were other interrupt requests
1347 //
1348 if (DoneHead & OHCI_DONE_INTERRUPTS)
1349 {
1350 //
1351 // get other events
1352 //
1353 Status |= READ_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_INTERRUPT_STATUS_OFFSET)) & READ_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_INTERRUPT_ENABLE_OFFSET));
1354 }
1355 }
1356
1357 //
1358 // sanity check
1359 //
1360 ASSERT(Status != 0);
1361
1362 if (Status & OHCI_WRITEBACK_DONE_HEAD)
1363 {
1364 //
1365 // head completed
1366 //
1367 Acknowledge |= OHCI_WRITEBACK_DONE_HEAD;
1368 This->m_HCCA->DoneHead = 0;
1369 }
1370
1371 if (Status & OHCI_RESUME_DETECTED)
1372 {
1373 //
1374 // resume
1375 //
1376 DPRINT1("InterruptServiceRoutine> Resume\n");
1377 Acknowledge |= OHCI_RESUME_DETECTED;
1378 }
1379
1380
1381 if (Status & OHCI_UNRECOVERABLE_ERROR)
1382 {
1383 DPRINT1("InterruptServiceRoutine> Controller error\n");
1384
1385 //
1386 // halt controller
1387 //
1388 ASSERT(FALSE);
1389 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_CONTROL_OFFSET), OHCI_HC_FUNCTIONAL_STATE_RESET);
1390 }
1391
1392 if (Status & OHCI_ROOT_HUB_STATUS_CHANGE)
1393 {
1394 //
1395 // new device has arrived
1396 //
1397
1398 //
1399 // disable interrupt as it will fire untill the port has been reset
1400 //
1401 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_INTERRUPT_DISABLE_OFFSET), OHCI_ROOT_HUB_STATUS_CHANGE);
1402 Acknowledge |= OHCI_ROOT_HUB_STATUS_CHANGE;
1403 }
1404
1405 //
1406 // is there something to acknowledge
1407 //
1408 if (Acknowledge)
1409 {
1410 //
1411 // ack change
1412 //
1413 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_INTERRUPT_STATUS_OFFSET), Acknowledge);
1414 }
1415
1416 //
1417 // defer processing
1418 //
1419 DPRINT("Status %x Acknowledge %x FrameNumber %x\n", Status, Acknowledge, This->m_HCCA->CurrentFrameNumber);
1420 KeInsertQueueDpc(&This->m_IntDpcObject, (PVOID)Status, (PVOID)(DoneHead & ~1));
1421
1422 //
1423 // interrupt handled
1424 //
1425 return TRUE;
1426 }
1427
1428 VOID
1429 NTAPI
1430 OhciDefferedRoutine(
1431 IN PKDPC Dpc,
1432 IN PVOID DeferredContext,
1433 IN PVOID SystemArgument1,
1434 IN PVOID SystemArgument2)
1435 {
1436 CUSBHardwareDevice *This;
1437 ULONG CStatus, Index, PortStatus;
1438 ULONG DoneHead;
1439
1440 //
1441 // get parameters
1442 //
1443 This = (CUSBHardwareDevice*)DeferredContext;
1444 CStatus = (ULONG) SystemArgument1;
1445 DoneHead = (ULONG)SystemArgument2;
1446
1447 DPRINT("OhciDefferedRoutine Status %x\n", CStatus);
1448
1449 if (CStatus & OHCI_WRITEBACK_DONE_HEAD)
1450 {
1451 //
1452 // notify queue of event
1453 //
1454 This->m_UsbQueue->TransferDescriptorCompletionCallback(DoneHead);
1455 }
1456 if (CStatus & OHCI_ROOT_HUB_STATUS_CHANGE)
1457 {
1458 //
1459 // device connected, lets check which port
1460 //
1461 for(Index = 0; Index < This->m_NumberOfPorts; Index++)
1462 {
1463 //
1464 // read port status
1465 //
1466 PortStatus = READ_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_RH_PORT_STATUS(Index)));
1467
1468 //
1469 // check if there is a status change
1470 //
1471 if (PortStatus & OHCI_RH_PORTSTATUS_CSC)
1472 {
1473 //
1474 // did a device connect
1475 //
1476 if (PortStatus & OHCI_RH_PORTSTATUS_CCS)
1477 {
1478 //
1479 // device connected
1480 //
1481 DPRINT1("New device arrival at Port %d LowSpeed %x\n", Index, (PortStatus & OHCI_RH_PORTSTATUS_LSDA));
1482
1483 //
1484 // enable port
1485 //
1486 WRITE_REGISTER_ULONG((PULONG)((PUCHAR)This->m_Base + OHCI_RH_PORT_STATUS(Index)), OHCI_RH_PORTSTATUS_PES);
1487
1488
1489 //
1490 // store change
1491 //
1492 This->m_PortStatus[Index].PortStatus |= USB_PORT_STATUS_CONNECT;
1493 This->m_PortStatus[Index].PortChange |= USB_PORT_STATUS_CONNECT;
1494
1495 if ((PortStatus & OHCI_RH_PORTSTATUS_LSDA))
1496 {
1497 //
1498 // low speed device connected
1499 //
1500 This->m_PortStatus[Index].PortStatus |= USB_PORT_STATUS_LOW_SPEED;
1501 }
1502 }
1503 else
1504 {
1505 //
1506 // device disconnected
1507 //
1508 DPRINT1("Device disconnected at Port %x\n", Index);
1509
1510 //
1511 // update port status flags
1512 //
1513 This->m_PortStatus[Index].PortStatus &= ~USB_PORT_STATUS_LOW_SPEED;
1514 This->m_PortStatus[Index].PortStatus &= ~USB_PORT_STATUS_CONNECT;
1515 This->m_PortStatus[Index].PortChange |= USB_PORT_STATUS_CONNECT;
1516 }
1517
1518 //
1519 // is there a status change callback
1520 //
1521 if (This->m_SCECallBack != NULL)
1522 {
1523 //
1524 // queue work item for processing
1525 //
1526 ExQueueWorkItem(&This->m_StatusChangeWorkItem, DelayedWorkQueue);
1527 }
1528 }
1529 }
1530 }
1531
1532
1533 }
1534
1535 VOID
1536 NTAPI
1537 StatusChangeWorkItemRoutine(
1538 PVOID Context)
1539 {
1540 //
1541 // cast to hardware object
1542 //
1543 CUSBHardwareDevice * This = (CUSBHardwareDevice*)Context;
1544
1545 //
1546 // is there a callback
1547 //
1548 if (This->m_SCECallBack)
1549 {
1550 //
1551 // issue callback
1552 //
1553 This->m_SCECallBack(This->m_SCEContext);
1554 }
1555
1556 }
1557
1558 NTSTATUS
1559 CreateUSBHardware(
1560 PUSBHARDWAREDEVICE *OutHardware)
1561 {
1562 PUSBHARDWAREDEVICE This;
1563
1564 This = new(NonPagedPool, TAG_USBOHCI) CUSBHardwareDevice(0);
1565
1566 if (!This)
1567 return STATUS_INSUFFICIENT_RESOURCES;
1568
1569 This->AddRef();
1570
1571 // return result
1572 *OutHardware = (PUSBHARDWAREDEVICE)This;
1573
1574 return STATUS_SUCCESS;
1575 }