UsbKbd.cpp@ 87773

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1	/* $Id: UsbKbd.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* UsbKbd - USB Human Interface Device Emulation, Keyboard.
4	*/
5
6	/*
7	* Copyright (C) 2007-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	/** @page pg_usb_kbd USB Keyboard Device Emulation.
19	*
20	* This module implements a standard USB keyboard which uses the boot
21	* interface. The keyboard sends reports which have room for up to six
22	* normal keys and all standard modifier keys. A report always reflects the
23	* current state of the keyboard and indicates which keys are held down.
24	*
25	* Software normally utilizes the keyboard's interrupt endpoint to request
26	* reports to be sent whenever a state change occurs. However, reports can
27	* also be sent whenever an interrupt transfer is initiated (the keyboard is
28	* not "idle") or requested via the control endpoint (polling).
29	*
30	* Because turnaround on USB is relatively slow, the keyboard often ends up
31	* in a situation where new input arrived but there is no URB available
32	* where a report could be written to. The PDM queue maintained by the
33	* keyboard driver is utilized to provide buffering and hold incoming events
34	* until they can be passed along. The USB keyboard can effectively buffer
35	* up to one event.
36	*
37	* If there is a pending event and a new URB becomes available, a report is
38	* built and the keyboard queue is flushed. This ensures that queued events
39	* are processed as quickly as possible.
40	*
41	*
42	* References:
43	*
44	* Device Class Definition for Human Interface Devices (HID), Version 1.11
45	*
46	*/
47
48
49	/*********************************************************************************************************************************
50	* Header Files *
51	*********************************************************************************************************************************/
52	#define LOG_GROUP LOG_GROUP_USB_KBD
53	#include <VBox/vmm/pdmusb.h>
54	#include <VBox/log.h>
55	#include <VBox/err.h>
56	#include <iprt/assert.h>
57	#include <iprt/critsect.h>
58	#include <iprt/mem.h>
59	#include <iprt/semaphore.h>
60	#include <iprt/string.h>
61	#include <iprt/uuid.h>
62	#include "VBoxDD.h"
63
64
65	/*********************************************************************************************************************************
66	* Defined Constants And Macros *
67	*********************************************************************************************************************************/
68	/** @name USB HID string IDs
69	* @{ */
70	#define USBHID_STR_ID_MANUFACTURER 1
71	#define USBHID_STR_ID_PRODUCT 2
72	/** @} */
73
74	/** @name USB HID specific descriptor types
75	* @{ */
76	#define DT_IF_HID_DESCRIPTOR 0x21
77	#define DT_IF_HID_REPORT 0x22
78	/** @} */
79
80	/** @name USB HID vendor and product IDs
81	* @{ */
82	#define VBOX_USB_VENDOR 0x80EE
83	#define USBHID_PID_KEYBOARD 0x0010
84	/** @} */
85
86	/** @name USB HID class specific requests
87	* @{ */
88	#define HID_REQ_GET_REPORT 0x01
89	#define HID_REQ_GET_IDLE 0x02
90	#define HID_REQ_SET_REPORT 0x09
91	#define HID_REQ_SET_IDLE 0x0A
92	/** @} */
93
94	/** @name USB HID additional constants
95	* @{ */
96	/** The highest USB usage code reported by the VBox emulated keyboard */
97	#define VBOX_USB_MAX_USAGE_CODE 0xE7
98	/** The size of an array needed to store all USB usage codes */
99	#define VBOX_USB_USAGE_ARRAY_SIZE (VBOX_USB_MAX_USAGE_CODE + 1)
100	#define USBHID_USAGE_ROLL_OVER 1
101	/** The usage code of the first modifier key. */
102	#define USBHID_MODIFIER_FIRST 0xE0
103	/** The usage code of the last modifier key. */
104	#define USBHID_MODIFIER_LAST 0xE7
105	/** @} */
106
107
108	/*********************************************************************************************************************************
109	* Structures and Typedefs *
110	*********************************************************************************************************************************/
111
112	/**
113	* The USB HID request state.
114	*/
115	typedef enum USBHIDREQSTATE
116	{
117	/** Invalid status. */
118	USBHIDREQSTATE_INVALID = 0,
119	/** Ready to receive a new read request. */
120	USBHIDREQSTATE_READY,
121	/** Have (more) data for the host. */
122	USBHIDREQSTATE_DATA_TO_HOST,
123	/** Waiting to supply status information to the host. */
124	USBHIDREQSTATE_STATUS,
125	/** The end of the valid states. */
126	USBHIDREQSTATE_END
127	} USBHIDREQSTATE;
128
129
130	/**
131	* Endpoint status data.
132	*/
133	typedef struct USBHIDEP
134	{
135	bool fHalted;
136	} USBHIDEP;
137	/** Pointer to the endpoint status. */
138	typedef USBHIDEP *PUSBHIDEP;
139
140
141	/**
142	* A URB queue.
143	*/
144	typedef struct USBHIDURBQUEUE
145	{
146	/** The head pointer. */
147	PVUSBURB pHead;
148	/** Where to insert the next entry. */
149	PVUSBURB *ppTail;
150	} USBHIDURBQUEUE;
151	/** Pointer to a URB queue. */
152	typedef USBHIDURBQUEUE *PUSBHIDURBQUEUE;
153	/** Pointer to a const URB queue. */
154	typedef USBHIDURBQUEUE const *PCUSBHIDURBQUEUE;
155
156
157	/**
158	* The USB HID report structure for regular keys.
159	*/
160	typedef struct USBHIDK_REPORT
161	{
162	uint8_t ShiftState; /*< Modifier keys bitfield /
163	uint8_t Reserved; /*< Currently unused /
164	uint8_t aKeys[6]; /*< Normal keys /
165	} USBHIDK_REPORT, *PUSBHIDK_REPORT;
166
167	/**
168	* The USB HID instance data.
169	*/
170	typedef struct USBHID
171	{
172	/** Pointer back to the PDM USB Device instance structure. */
173	PPDMUSBINS pUsbIns;
174	/** Critical section protecting the device state. */
175	RTCRITSECT CritSect;
176
177	/** The current configuration.
178	* (0 - default, 1 - the one supported configuration, i.e configured.) */
179	uint8_t bConfigurationValue;
180	/** USB HID Idle value.
181	* (0 - only report state change, !=0 - report in bIdle * 4ms intervals.) */
182	uint8_t bIdle;
183	/** Endpoint 0 is the default control pipe, 1 is the dev->host interrupt one. */
184	USBHIDEP aEps[2];
185	/** The state of the HID (state machine).*/
186	USBHIDREQSTATE enmState;
187
188	/** Pending to-host queue.
189	* The URBs waiting here are waiting for data to become available.
190	*/
191	USBHIDURBQUEUE ToHostQueue;
192
193	/** Done queue
194	* The URBs stashed here are waiting to be reaped. */
195	USBHIDURBQUEUE DoneQueue;
196	/** Signalled when adding an URB to the done queue and fHaveDoneQueueWaiter
197	* is set. */
198	RTSEMEVENT hEvtDoneQueue;
199	/** Someone is waiting on the done queue. */
200	bool fHaveDoneQueueWaiter;
201	/** If device has pending changes. */
202	bool fHasPendingChanges;
203	/** Currently depressed keys */
204	uint8_t abDepressedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
205
206	/**
207	* Keyboard port - LUN#0.
208	*
209	* @implements PDMIBASE
210	* @implements PDMIKEYBOARDPORT
211	*/
212	struct
213	{
214	/** The base interface for the keyboard port. */
215	PDMIBASE IBase;
216	/** The keyboard port base interface. */
217	PDMIKEYBOARDPORT IPort;
218
219	/** The base interface of the attached keyboard driver. */
220	R3PTRTYPE(PPDMIBASE) pDrvBase;
221	/** The keyboard interface of the attached keyboard driver. */
222	R3PTRTYPE(PPDMIKEYBOARDCONNECTOR) pDrv;
223	} Lun0;
224	} USBHID;
225	/** Pointer to the USB HID instance data. */
226	typedef USBHID *PUSBHID;
227
228
229	/*********************************************************************************************************************************
230	* Global Variables *
231	*********************************************************************************************************************************/
232	static const PDMUSBDESCCACHESTRING g_aUsbHidStrings_en_US[] =
233	{
234	{ USBHID_STR_ID_MANUFACTURER, "VirtualBox" },
235	{ USBHID_STR_ID_PRODUCT, "USB Keyboard" },
236	};
237
238	static const PDMUSBDESCCACHELANG g_aUsbHidLanguages[] =
239	{
240	{ 0x0409, RT_ELEMENTS(g_aUsbHidStrings_en_US), g_aUsbHidStrings_en_US }
241	};
242
243	static const VUSBDESCENDPOINTEX g_aUsbHidEndpointDescs[] =
244	{
245	{
246	{
247	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
248	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
249	/* .bEndpointAddress = / 0x81 / ep=1, in */,
250	/* .bmAttributes = / 3 / interrupt */,
251	/* .wMaxPacketSize = */ 8,
252	/* .bInterval = */ 10,
253	},
254	/* .pvMore = */ NULL,
255	/* .pvClass = */ NULL,
256	/* .cbClass = */ 0
257	},
258	};
259
260	/** HID report descriptor. */
261	static const uint8_t g_UsbHidReportDesc[] =
262	{
263	/* Usage Page / 0x05, 0x01, / Generic Desktop */
264	/* Usage / 0x09, 0x06, / Keyboard */
265	/* Collection / 0xA1, 0x01, / Application */
266	/* Usage Page / 0x05, 0x07, / Keyboard */
267	/* Usage Minimum / 0x19, 0xE0, / Left Ctrl Key */
268	/* Usage Maximum / 0x29, 0xE7, / Right GUI Key */
269	/* Logical Minimum / 0x15, 0x00, / 0 */
270	/* Logical Maximum / 0x25, 0x01, / 1 */
271	/* Report Count / 0x95, 0x08, / 8 */
272	/* Report Size / 0x75, 0x01, / 1 */
273	/* Input / 0x81, 0x02, / Data, Value, Absolute, Bit field */
274	/* Report Count / 0x95, 0x01, / 1 */
275	/* Report Size / 0x75, 0x08, / 8 (padding bits) */
276	/* Input / 0x81, 0x01, / Constant, Array, Absolute, Bit field */
277	/* Report Count / 0x95, 0x05, / 5 */
278	/* Report Size / 0x75, 0x01, / 1 */
279	/* Usage Page / 0x05, 0x08, / LEDs */
280	/* Usage Minimum / 0x19, 0x01, / Num Lock */
281	/* Usage Maximum / 0x29, 0x05, / Kana */
282	/* Output / 0x91, 0x02, / Data, Value, Absolute, Non-volatile,Bit field */
283	/* Report Count / 0x95, 0x01, / 1 */
284	/* Report Size / 0x75, 0x03, / 3 */
285	/* Output / 0x91, 0x01, / Constant, Value, Absolute, Non-volatile, Bit field */
286	/* Report Count / 0x95, 0x06, / 6 */
287	/* Report Size / 0x75, 0x08, / 8 */
288	/* Logical Minimum / 0x15, 0x00, / 0 */
289	/* Logical Maximum / 0x26, 0xFF,0x00,/ 255 */
290	/* Usage Page / 0x05, 0x07, / Keyboard */
291	/* Usage Minimum / 0x19, 0x00, / 0 */
292	/* Usage Maximum / 0x29, 0xFF, / 255 */
293	/* Input / 0x81, 0x00, / Data, Array, Absolute, Bit field */
294	/* End Collection */ 0xC0,
295	};
296
297	/** Additional HID class interface descriptor. */
298	static const uint8_t g_UsbHidIfHidDesc[] =
299	{
300	/* .bLength = */ 0x09,
301	/* .bDescriptorType = / 0x21, / HID */
302	/* .bcdHID = / 0x10, 0x01, / 1.1 */
303	/* .bCountryCode = / 0x0D, / International (ISO) */
304	/* .bNumDescriptors = */ 1,
305	/* .bDescriptorType = / 0x22, / Report */
306	/* .wDescriptorLength = */ sizeof(g_UsbHidReportDesc), 0x00
307	};
308
309	static const VUSBDESCINTERFACEEX g_UsbHidInterfaceDesc =
310	{
311	{
312	/* .bLength = */ sizeof(VUSBDESCINTERFACE),
313	/* .bDescriptorType = */ VUSB_DT_INTERFACE,
314	/* .bInterfaceNumber = */ 0,
315	/* .bAlternateSetting = */ 0,
316	/* .bNumEndpoints = */ 1,
317	/* .bInterfaceClass = / 3 / HID */,
318	/* .bInterfaceSubClass = / 1 / Boot Interface */,
319	/* .bInterfaceProtocol = / 1 / Keyboard */,
320	/* .iInterface = */ 0
321	},
322	/* .pvMore = */ NULL,
323	/* .pvClass = */ &g_UsbHidIfHidDesc,
324	/* .cbClass = */ sizeof(g_UsbHidIfHidDesc),
325	&g_aUsbHidEndpointDescs[0],
326	/* .pIAD = */ NULL,
327	/* .cbIAD = */ 0
328	};
329
330	static const VUSBINTERFACE g_aUsbHidInterfaces[] =
331	{
332	{ &g_UsbHidInterfaceDesc, /* .cSettings = */ 1 },
333	};
334
335	static const VUSBDESCCONFIGEX g_UsbHidConfigDesc =
336	{
337	{
338	/* .bLength = */ sizeof(VUSBDESCCONFIG),
339	/* .bDescriptorType = */ VUSB_DT_CONFIG,
340	/* .wTotalLength = / 0 / recalculated on read */,
341	/* .bNumInterfaces = */ RT_ELEMENTS(g_aUsbHidInterfaces),
342	/* .bConfigurationValue =*/ 1,
343	/* .iConfiguration = */ 0,
344	/* .bmAttributes = */ RT_BIT(7),
345	/* .MaxPower = / 50 / 100mA */
346	},
347	NULL, /* pvMore */
348	NULL, /* pvClass */
349	0, /* cbClass */
350	&g_aUsbHidInterfaces[0],
351	NULL /* pvOriginal */
352	};
353
354	static const VUSBDESCDEVICE g_UsbHidDeviceDesc =
355	{
356	/* .bLength = */ sizeof(g_UsbHidDeviceDesc),
357	/* .bDescriptorType = */ VUSB_DT_DEVICE,
358	/* .bcdUsb = / 0x110, / 1.1 */
359	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
360	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
361	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
362	/* .bMaxPacketSize0 = */ 8,
363	/* .idVendor = */ VBOX_USB_VENDOR,
364	/* .idProduct = */ USBHID_PID_KEYBOARD,
365	/* .bcdDevice = / 0x0100, / 1.0 */
366	/* .iManufacturer = */ USBHID_STR_ID_MANUFACTURER,
367	/* .iProduct = */ USBHID_STR_ID_PRODUCT,
368	/* .iSerialNumber = */ 0,
369	/* .bNumConfigurations = */ 1
370	};
371
372	static const PDMUSBDESCCACHE g_UsbHidDescCache =
373	{
374	/* .pDevice = */ &g_UsbHidDeviceDesc,
375	/* .paConfigs = */ &g_UsbHidConfigDesc,
376	/* .paLanguages = */ g_aUsbHidLanguages,
377	/* .cLanguages = */ RT_ELEMENTS(g_aUsbHidLanguages),
378	/* .fUseCachedDescriptors = */ true,
379	/* .fUseCachedStringsDescriptors = */ true
380	};
381
382
383	/*********************************************************************************************************************************
384	* Internal Functions *
385	*********************************************************************************************************************************/
386
387
388	/**
389	* Initializes an URB queue.
390	*
391	* @param pQueue The URB queue.
392	*/
393	static void usbHidQueueInit(PUSBHIDURBQUEUE pQueue)
394	{
395	pQueue->pHead = NULL;
396	pQueue->ppTail = &pQueue->pHead;
397	}
398
399	/**
400	* Inserts an URB at the end of the queue.
401	*
402	* @param pQueue The URB queue.
403	* @param pUrb The URB to insert.
404	*/
405	DECLINLINE(void) usbHidQueueAddTail(PUSBHIDURBQUEUE pQueue, PVUSBURB pUrb)
406	{
407	pUrb->Dev.pNext = NULL;
408	*pQueue->ppTail = pUrb;
409	pQueue->ppTail = &pUrb->Dev.pNext;
410	}
411
412
413	/**
414	* Unlinks the head of the queue and returns it.
415	*
416	* @returns The head entry.
417	* @param pQueue The URB queue.
418	*/
419	DECLINLINE(PVUSBURB) usbHidQueueRemoveHead(PUSBHIDURBQUEUE pQueue)
420	{
421	PVUSBURB pUrb = pQueue->pHead;
422	if (pUrb)
423	{
424	PVUSBURB pNext = pUrb->Dev.pNext;
425	pQueue->pHead = pNext;
426	if (!pNext)
427	pQueue->ppTail = &pQueue->pHead;
428	else
429	pUrb->Dev.pNext = NULL;
430	}
431	return pUrb;
432	}
433
434
435	/**
436	* Removes an URB from anywhere in the queue.
437	*
438	* @returns true if found, false if not.
439	* @param pQueue The URB queue.
440	* @param pUrb The URB to remove.
441	*/
442	DECLINLINE(bool) usbHidQueueRemove(PUSBHIDURBQUEUE pQueue, PVUSBURB pUrb)
443	{
444	PVUSBURB pCur = pQueue->pHead;
445	if (pCur == pUrb)
446	pQueue->pHead = pUrb->Dev.pNext;
447	else
448	{
449	while (pCur)
450	{
451	if (pCur->Dev.pNext == pUrb)
452	{
453	pCur->Dev.pNext = pUrb->Dev.pNext;
454	break;
455	}
456	pCur = pCur->Dev.pNext;
457	}
458	if (!pCur)
459	return false;
460	}
461	if (!pUrb->Dev.pNext)
462	pQueue->ppTail = &pQueue->pHead;
463	return true;
464	}
465
466
467	#if 0 /* unused */
468	/**
469	* Checks if the queue is empty or not.
470	*
471	* @returns true if it is, false if it isn't.
472	* @param pQueue The URB queue.
473	*/
474	DECLINLINE(bool) usbHidQueueIsEmpty(PCUSBHIDURBQUEUE pQueue)
475	{
476	return pQueue->pHead == NULL;
477	}
478	#endif /* unused */
479
480
481	/**
482	* Links an URB into the done queue.
483	*
484	* @param pThis The HID instance.
485	* @param pUrb The URB.
486	*/
487	static void usbHidLinkDone(PUSBHID pThis, PVUSBURB pUrb)
488	{
489	usbHidQueueAddTail(&pThis->DoneQueue, pUrb);
490
491	if (pThis->fHaveDoneQueueWaiter)
492	{
493	int rc = RTSemEventSignal(pThis->hEvtDoneQueue);
494	AssertRC(rc);
495	}
496	}
497
498
499	/**
500	* Completes the URB with a stalled state, halting the pipe.
501	*/
502	static int usbHidCompleteStall(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb, const char *pszWhy)
503	{
504	RT_NOREF1(pszWhy);
505	Log(("usbHidCompleteStall/#%u: pUrb=%p:%s: %s\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, pszWhy));
506
507	pUrb->enmStatus = VUSBSTATUS_STALL;
508
509	/** @todo figure out if the stall is global or pipe-specific or both. */
510	if (pEp)
511	pEp->fHalted = true;
512	else
513	{
514	pThis->aEps[0].fHalted = true;
515	pThis->aEps[1].fHalted = true;
516	}
517
518	usbHidLinkDone(pThis, pUrb);
519	return VINF_SUCCESS;
520	}
521
522
523	/**
524	* Completes the URB with a OK state.
525	*/
526	static int usbHidCompleteOk(PUSBHID pThis, PVUSBURB pUrb, size_t cbData)
527	{
528	Log(("usbHidCompleteOk/#%u: pUrb=%p:%s cbData=%#zx\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, cbData));
529
530	pUrb->enmStatus = VUSBSTATUS_OK;
531	pUrb->cbData = (uint32_t)cbData;
532
533	usbHidLinkDone(pThis, pUrb);
534	return VINF_SUCCESS;
535	}
536
537
538	/**
539	* Reset worker for usbHidUsbReset, usbHidUsbSetConfiguration and
540	* usbHidHandleDefaultPipe.
541	*
542	* @returns VBox status code.
543	* @param pThis The HID instance.
544	* @param pUrb Set when usbHidHandleDefaultPipe is the
545	* caller.
546	* @param fSetConfig Set when usbHidUsbSetConfiguration is the
547	* caller.
548	*/
549	static int usbHidResetWorker(PUSBHID pThis, PVUSBURB pUrb, bool fSetConfig)
550	{
551	/*
552	* Deactivate the keyboard.
553	*/
554	pThis->Lun0.pDrv->pfnSetActive(pThis->Lun0.pDrv, false);
555
556	/*
557	* Reset the device state.
558	*/
559	pThis->enmState = USBHIDREQSTATE_READY;
560	pThis->bIdle = 0;
561	pThis->fHasPendingChanges = false;
562
563	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aEps); i++)
564	pThis->aEps[i].fHalted = false;
565
566	if (!pUrb && !fSetConfig) /* (only device reset) */
567	pThis->bConfigurationValue = 0; /* default */
568
569	/*
570	* Ditch all pending URBs.
571	*/
572	PVUSBURB pCurUrb;
573	while ((pCurUrb = usbHidQueueRemoveHead(&pThis->ToHostQueue)) != NULL)
574	{
575	pCurUrb->enmStatus = VUSBSTATUS_CRC;
576	usbHidLinkDone(pThis, pCurUrb);
577	}
578
579	if (pUrb)
580	return usbHidCompleteOk(pThis, pUrb, 0);
581	return VINF_SUCCESS;
582	}
583
584	/**
585	* Returns true if the usage code corresponds to a keyboard modifier key
586	* (left or right ctrl, shift, alt or GUI). The usage codes for these keys
587	* are the range 0xe0 to 0xe7.
588	*/
589	static bool usbHidUsageCodeIsModifier(uint8_t u8Usage)
590	{
591	return u8Usage >= USBHID_MODIFIER_FIRST && u8Usage <= USBHID_MODIFIER_LAST;
592	}
593
594	/**
595	* Convert a USB HID usage code to a keyboard modifier flag. The arithmetic
596	* is simple: the modifier keys have usage codes from 0xe0 to 0xe7, and the
597	* lower nibble is the bit number of the flag.
598	*/
599	static uint8_t usbHidModifierToFlag(uint8_t u8Usage)
600	{
601	Assert(usbHidUsageCodeIsModifier(u8Usage));
602	return RT_BIT(u8Usage & 0xf);
603	}
604
605	/**
606	* Create a USB HID keyboard report reflecting the current state of the
607	* keyboard (up/down keys).
608	*/
609	static void usbHidBuildReport(PUSBHIDK_REPORT pReport, uint8_t *pabDepressedKeys)
610	{
611	unsigned iBuf = 0;
612	RT_ZERO(*pReport);
613	for (unsigned iKey = 0; iKey < VBOX_USB_USAGE_ARRAY_SIZE; ++iKey)
614	{
615	Assert(iBuf <= RT_ELEMENTS(pReport->aKeys));
616	if (pabDepressedKeys[iKey])
617	{
618	if (usbHidUsageCodeIsModifier(iKey))
619	pReport->ShiftState \|= usbHidModifierToFlag(iKey);
620	else if (iBuf == RT_ELEMENTS(pReport->aKeys))
621	{
622	/* The USB HID spec says that the entire vector should be
623	* set to ErrorRollOver on overflow. We don't mind if this
624	* path is taken several times for one report. */
625	for (unsigned iBuf2 = 0;
626	iBuf2 < RT_ELEMENTS(pReport->aKeys); ++iBuf2)
627	pReport->aKeys[iBuf2] = USBHID_USAGE_ROLL_OVER;
628	}
629	else
630	{
631	pReport->aKeys[iBuf] = iKey;
632	++iBuf;
633	}
634	}
635	}
636	}
637
638	/**
639	* Handles a SET_REPORT request sent to the default control pipe. Note
640	* that unrecognized requests are ignored without reporting an error.
641	*/
642	static void usbHidSetReport(PUSBHID pThis, PVUSBURB pUrb)
643	{
644	PVUSBSETUP pSetup = (PVUSBSETUP)&pUrb->abData[0];
645	Assert(pSetup->bRequest == HID_REQ_SET_REPORT);
646
647	/* The LED report is the 3rd report, ID 0 (-> wValue 0x200). */
648	if (pSetup->wIndex == 0 && pSetup->wLength == 1 && pSetup->wValue == 0x200)
649	{
650	PDMKEYBLEDS enmLeds = PDMKEYBLEDS_NONE;
651	uint8_t u8LEDs = pUrb->abData[sizeof(*pSetup)];
652	LogFlowFunc(("Setting keybooard LEDs to u8LEDs=%02X\n", u8LEDs));
653
654	/* Translate LED state to PDM format and send upstream. */
655	if (u8LEDs & 0x01)
656	enmLeds = (PDMKEYBLEDS)(enmLeds \| PDMKEYBLEDS_NUMLOCK);
657	if (u8LEDs & 0x02)
658	enmLeds = (PDMKEYBLEDS)(enmLeds \| PDMKEYBLEDS_CAPSLOCK);
659	if (u8LEDs & 0x04)
660	enmLeds = (PDMKEYBLEDS)(enmLeds \| PDMKEYBLEDS_SCROLLLOCK);
661
662	pThis->Lun0.pDrv->pfnLedStatusChange(pThis->Lun0.pDrv, enmLeds);
663	}
664	}
665
666	/**
667	* Sends a state report to the guest if there is a URB available.
668	*/
669	static void usbHidSendReport(PUSBHID pThis)
670	{
671	PVUSBURB pUrb = usbHidQueueRemoveHead(&pThis->ToHostQueue);
672	if (pUrb)
673	{
674	PUSBHIDK_REPORT pReport = (PUSBHIDK_REPORT)&pUrb->abData[0];
675
676	usbHidBuildReport(pReport, pThis->abDepressedKeys);
677	pThis->fHasPendingChanges = false;
678	usbHidCompleteOk(pThis, pUrb, sizeof(*pReport));
679	}
680	else
681	{
682	Log2(("No available URB for USB kbd\n"));
683	pThis->fHasPendingChanges = true;
684	}
685	}
686
687	/**
688	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
689	*/
690	static DECLCALLBACK(void ) usbHidKeyboardQueryInterface(PPDMIBASE pInterface, const char pszIID)
691	{
692	PUSBHID pThis = RT_FROM_MEMBER(pInterface, USBHID, Lun0.IBase);
693	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->Lun0.IBase);
694	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIKEYBOARDPORT, &pThis->Lun0.IPort);
695	return NULL;
696	}
697
698	/* See the PS2K device. */
699	#define KRSP_BAT_FAIL 0xFC /* Also a 'release keys' signal. */
700
701	/**
702	* @interface_method_impl{PDMIKEYBOARDPORT,pfnPutEventHid}
703	*/
704	static DECLCALLBACK(int) usbHidKeyboardPutEvent(PPDMIKEYBOARDPORT pInterface, uint32_t idUsage)
705	{
706	PUSBHID pThis = RT_FROM_MEMBER(pInterface, USBHID, Lun0.IPort);
707	uint8_t u8HidCode;
708	bool fKeyDown;
709	bool fHaveEvent = true;
710	int rc = VINF_SUCCESS;
711
712	/* Let's see what we got... */
713	fKeyDown = !(idUsage & UINT32_C(0x80000000));
714	u8HidCode = idUsage & 0xFF;
715	AssertReturn(u8HidCode <= VBOX_USB_MAX_USAGE_CODE, VERR_INTERNAL_ERROR);
716
717	RTCritSectEnter(&pThis->CritSect);
718
719	LogFlowFunc(("key %s: 0x%x\n", fKeyDown ? "down" : "up", u8HidCode));
720
721	/*
722	* Due to host key repeat, we can get key events for keys which are
723	* already depressed. Drop those right here.
724	*/
725	if (fKeyDown && pThis->abDepressedKeys[u8HidCode])
726	fHaveEvent = false;
727
728	/* If there is already a pending event, we won't accept a new one yet. */
729	if (pThis->fHasPendingChanges && fHaveEvent)
730	{
731	rc = VERR_TRY_AGAIN;
732	}
733	else if (fHaveEvent)
734	{
735	if (RT_LIKELY(idUsage != KRSP_BAT_FAIL))
736	{
737	/* Regular key event - update keyboard state. */
738	if (fKeyDown)
739	pThis->abDepressedKeys[u8HidCode] = 1;
740	else
741	pThis->abDepressedKeys[u8HidCode] = 0;
742	}
743	else
744	{
745	/* Clear all currently depressed and unreported keys. */
746	RT_ZERO(pThis->abDepressedKeys);
747	}
748
749	/*
750	* Try sending a report. Note that we already decided to consume the
751	* event regardless of whether a URB is available or not. If it's not,
752	* we will simply not accept any further events.
753	*/
754	usbHidSendReport(pThis);
755	}
756
757	RTCritSectLeave(&pThis->CritSect);
758
759	return rc;
760	}
761
762	/**
763	* @interface_method_impl{PDMUSBREG,pfnUrbReap}
764	*/
765	static DECLCALLBACK(PVUSBURB) usbHidUrbReap(PPDMUSBINS pUsbIns, RTMSINTERVAL cMillies)
766	{
767	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
768	//LogFlow(("usbHidUrbReap/#%u: cMillies=%u\n", pUsbIns->iInstance, cMillies));
769
770	RTCritSectEnter(&pThis->CritSect);
771
772	PVUSBURB pUrb = usbHidQueueRemoveHead(&pThis->DoneQueue);
773	if (!pUrb && cMillies)
774	{
775	/* Wait */
776	pThis->fHaveDoneQueueWaiter = true;
777	RTCritSectLeave(&pThis->CritSect);
778
779	RTSemEventWait(pThis->hEvtDoneQueue, cMillies);
780
781	RTCritSectEnter(&pThis->CritSect);
782	pThis->fHaveDoneQueueWaiter = false;
783
784	pUrb = usbHidQueueRemoveHead(&pThis->DoneQueue);
785	}
786
787	RTCritSectLeave(&pThis->CritSect);
788
789	if (pUrb)
790	Log(("usbHidUrbReap/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
791	return pUrb;
792	}
793
794
795	/**
796	* @interface_method_impl{PDMUSBREG,pfnWakeup}
797	*/
798	static DECLCALLBACK(int) usbHidWakeup(PPDMUSBINS pUsbIns)
799	{
800	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
801
802	return RTSemEventSignal(pThis->hEvtDoneQueue);
803	}
804
805
806	/**
807	* @interface_method_impl{PDMUSBREG,pfnUrbCancel}
808	*/
809	static DECLCALLBACK(int) usbHidUrbCancel(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
810	{
811	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
812	LogFlow(("usbHidUrbCancel/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
813	RTCritSectEnter(&pThis->CritSect);
814
815	/*
816	* Remove the URB from the to-host queue and move it onto the done queue.
817	*/
818	if (usbHidQueueRemove(&pThis->ToHostQueue, pUrb))
819	usbHidLinkDone(pThis, pUrb);
820
821	RTCritSectLeave(&pThis->CritSect);
822	return VINF_SUCCESS;
823	}
824
825
826	/**
827	* Handles request sent to the inbound (device to host) interrupt pipe. This is
828	* rather different from bulk requests because an interrupt read URB may complete
829	* after arbitrarily long time.
830	*/
831	static int usbHidHandleIntrDevToHost(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb)
832	{
833	/*
834	* Stall the request if the pipe is halted.
835	*/
836	if (RT_UNLIKELY(pEp->fHalted))
837	return usbHidCompleteStall(pThis, NULL, pUrb, "Halted pipe");
838
839	/*
840	* Deal with the URB according to the state.
841	*/
842	switch (pThis->enmState)
843	{
844	/*
845	* We've data left to transfer to the host.
846	*/
847	case USBHIDREQSTATE_DATA_TO_HOST:
848	{
849	AssertFailed();
850	Log(("usbHidHandleIntrDevToHost: Entering STATUS\n"));
851	return usbHidCompleteOk(pThis, pUrb, 0);
852	}
853
854	/*
855	* Status transfer.
856	*/
857	case USBHIDREQSTATE_STATUS:
858	{
859	AssertFailed();
860	Log(("usbHidHandleIntrDevToHost: Entering READY\n"));
861	pThis->enmState = USBHIDREQSTATE_READY;
862	return usbHidCompleteOk(pThis, pUrb, 0);
863	}
864
865	case USBHIDREQSTATE_READY:
866	usbHidQueueAddTail(&pThis->ToHostQueue, pUrb);
867	/* If device was not set idle, send the current report right away. */
868	if (pThis->bIdle != 0 \|\| pThis->fHasPendingChanges)
869	{
870	usbHidSendReport(pThis);
871	LogFlow(("usbHidHandleIntrDevToHost: Sent report via %p:%s\n", pUrb, pUrb->pszDesc));
872	Assert(!pThis->fHasPendingChanges); /* Since we just got a URB... */
873	/* There may be more input queued up. Ask for it now. */
874	pThis->Lun0.pDrv->pfnFlushQueue(pThis->Lun0.pDrv);
875	}
876	return VINF_SUCCESS;
877
878	/*
879	* Bad states, stall.
880	*/
881	default:
882	Log(("usbHidHandleIntrDevToHost: enmState=%d cbData=%#x\n", pThis->enmState, pUrb->cbData));
883	return usbHidCompleteStall(pThis, NULL, pUrb, "Really bad state (D2H)!");
884	}
885	}
886
887
888	/**
889	* Handles request sent to the default control pipe.
890	*/
891	static int usbHidHandleDefaultPipe(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb)
892	{
893	PVUSBSETUP pSetup = (PVUSBSETUP)&pUrb->abData[0];
894	LogFlow(("usbHidHandleDefaultPipe: cbData=%d\n", pUrb->cbData));
895
896	AssertReturn(pUrb->cbData >= sizeof(*pSetup), VERR_VUSB_FAILED_TO_QUEUE_URB);
897
898	if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_STANDARD)
899	{
900	switch (pSetup->bRequest)
901	{
902	case VUSB_REQ_GET_DESCRIPTOR:
903	{
904	switch (pSetup->bmRequestType)
905	{
906	case VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
907	{
908	switch (pSetup->wValue >> 8)
909	{
910	case VUSB_DT_STRING:
911	Log(("usbHid: GET_DESCRIPTOR DT_STRING wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
912	break;
913	default:
914	Log(("usbHid: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
915	break;
916	}
917	break;
918	}
919
920	case VUSB_TO_INTERFACE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
921	{
922	switch (pSetup->wValue >> 8)
923	{
924	case DT_IF_HID_DESCRIPTOR:
925	{
926	uint32_t cbCopy;
927
928	/* Returned data is written after the setup message. */
929	cbCopy = pUrb->cbData - sizeof(*pSetup);
930	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbHidIfHidDesc));
931	Log(("usbHidKbd: GET_DESCRIPTOR DT_IF_HID_DESCRIPTOR wValue=%#x wIndex=%#x cbCopy=%#x\n", pSetup->wValue, pSetup->wIndex, cbCopy));
932	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbHidIfHidDesc, cbCopy);
933	return usbHidCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
934	}
935
936	case DT_IF_HID_REPORT:
937	{
938	uint32_t cbCopy;
939
940	/* Returned data is written after the setup message. */
941	cbCopy = pUrb->cbData - sizeof(*pSetup);
942	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbHidReportDesc));
943	Log(("usbHid: GET_DESCRIPTOR DT_IF_HID_REPORT wValue=%#x wIndex=%#x cbCopy=%#x\n", pSetup->wValue, pSetup->wIndex, cbCopy));
944	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbHidReportDesc, cbCopy);
945	return usbHidCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
946	}
947
948	default:
949	Log(("usbHid: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
950	break;
951	}
952	break;
953	}
954
955	default:
956	Log(("usbHid: Bad GET_DESCRIPTOR req: bmRequestType=%#x\n", pSetup->bmRequestType));
957	return usbHidCompleteStall(pThis, pEp, pUrb, "Bad GET_DESCRIPTOR");
958	}
959	break;
960	}
961
962	case VUSB_REQ_GET_STATUS:
963	{
964	uint16_t wRet = 0;
965
966	if (pSetup->wLength != 2)
967	{
968	Log(("usbHid: Bad GET_STATUS req: wLength=%#x\n", pSetup->wLength));
969	break;
970	}
971	Assert(pSetup->wValue == 0);
972	switch (pSetup->bmRequestType)
973	{
974	case VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
975	{
976	Assert(pSetup->wIndex == 0);
977	Log(("usbHid: GET_STATUS (device)\n"));
978	wRet = 0; /* Not self-powered, no remote wakeup. */
979	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
980	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
981	}
982
983	case VUSB_TO_INTERFACE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
984	{
985	if (pSetup->wIndex == 0)
986	{
987	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
988	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
989	}
990	Log(("usbHid: GET_STATUS (interface) invalid, wIndex=%#x\n", pSetup->wIndex));
991	break;
992	}
993
994	case VUSB_TO_ENDPOINT \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
995	{
996	if (pSetup->wIndex < RT_ELEMENTS(pThis->aEps))
997	{
998	wRet = pThis->aEps[pSetup->wIndex].fHalted ? 1 : 0;
999	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
1000	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
1001	}
1002	Log(("usbHid: GET_STATUS (endpoint) invalid, wIndex=%#x\n", pSetup->wIndex));
1003	break;
1004	}
1005
1006	default:
1007	Log(("usbHid: Bad GET_STATUS req: bmRequestType=%#x\n", pSetup->bmRequestType));
1008	return usbHidCompleteStall(pThis, pEp, pUrb, "Bad GET_STATUS");
1009	}
1010	break;
1011	}
1012
1013	case VUSB_REQ_CLEAR_FEATURE:
1014	break;
1015	}
1016
1017	/** @todo implement this. */
1018	Log(("usbHid: Implement standard request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1019	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1020
1021	usbHidCompleteStall(pThis, pEp, pUrb, "TODO: standard request stuff");
1022	}
1023	else if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_CLASS)
1024	{
1025	switch (pSetup->bRequest)
1026	{
1027	case HID_REQ_SET_IDLE:
1028	{
1029	switch (pSetup->bmRequestType)
1030	{
1031	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_DEVICE:
1032	{
1033	Log(("usbHid: SET_IDLE wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1034	pThis->bIdle = pSetup->wValue >> 8;
1035	/* Consider 24ms to mean zero for keyboards (see IOUSBHIDDriver) */
1036	if (pThis->bIdle == 6) pThis->bIdle = 0;
1037	return usbHidCompleteOk(pThis, pUrb, 0);
1038	}
1039	break;
1040	}
1041	break;
1042	}
1043	case HID_REQ_GET_IDLE:
1044	{
1045	switch (pSetup->bmRequestType)
1046	{
1047	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_HOST:
1048	{
1049	Log(("usbHid: GET_IDLE wValue=%#x wIndex=%#x, returning %#x\n", pSetup->wValue, pSetup->wIndex, pThis->bIdle));
1050	pUrb->abData[sizeof(*pSetup)] = pThis->bIdle;
1051	return usbHidCompleteOk(pThis, pUrb, 1);
1052	}
1053	break;
1054	}
1055	break;
1056	}
1057	case HID_REQ_SET_REPORT:
1058	{
1059	switch (pSetup->bmRequestType)
1060	{
1061	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_DEVICE:
1062	{
1063	Log(("usbHid: SET_REPORT wValue=%#x wIndex=%#x wLength=%#x\n", pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1064	usbHidSetReport(pThis, pUrb);
1065	return usbHidCompleteOk(pThis, pUrb, 0);
1066	}
1067	break;
1068	}
1069	break;
1070	}
1071	}
1072	Log(("usbHid: Unimplemented class request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1073	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1074
1075	usbHidCompleteStall(pThis, pEp, pUrb, "TODO: class request stuff");
1076	}
1077	else
1078	{
1079	Log(("usbHid: Unknown control msg: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1080	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1081	return usbHidCompleteStall(pThis, pEp, pUrb, "Unknown control msg");
1082	}
1083
1084	return VINF_SUCCESS;
1085	}
1086
1087
1088	/**
1089	* @interface_method_impl{PDMUSBREG,pfnUrbQueue}
1090	*/
1091	static DECLCALLBACK(int) usbHidQueue(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
1092	{
1093	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1094	LogFlow(("usbHidQueue/#%u: pUrb=%p:%s EndPt=%#x\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc, pUrb->EndPt));
1095	RTCritSectEnter(&pThis->CritSect);
1096
1097	/*
1098	* Parse on a per end-point basis.
1099	*/
1100	int rc;
1101	switch (pUrb->EndPt)
1102	{
1103	case 0:
1104	rc = usbHidHandleDefaultPipe(pThis, &pThis->aEps[0], pUrb);
1105	break;
1106
1107	case 0x81:
1108	AssertFailed();
1109	RT_FALL_THRU();
1110	case 0x01:
1111	rc = usbHidHandleIntrDevToHost(pThis, &pThis->aEps[1], pUrb);
1112	break;
1113
1114	default:
1115	AssertMsgFailed(("EndPt=%d\n", pUrb->EndPt));
1116	rc = VERR_VUSB_FAILED_TO_QUEUE_URB;
1117	break;
1118	}
1119
1120	RTCritSectLeave(&pThis->CritSect);
1121	return rc;
1122	}
1123
1124
1125	/**
1126	* @interface_method_impl{PDMUSBREG,pfnUsbClearHaltedEndpoint}
1127	*/
1128	static DECLCALLBACK(int) usbHidUsbClearHaltedEndpoint(PPDMUSBINS pUsbIns, unsigned uEndpoint)
1129	{
1130	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1131	LogFlow(("usbHidUsbClearHaltedEndpoint/#%u: uEndpoint=%#x\n", pUsbIns->iInstance, uEndpoint));
1132
1133	if ((uEndpoint & ~0x80) < RT_ELEMENTS(pThis->aEps))
1134	{
1135	RTCritSectEnter(&pThis->CritSect);
1136	pThis->aEps[(uEndpoint & ~0x80)].fHalted = false;
1137	RTCritSectLeave(&pThis->CritSect);
1138	}
1139
1140	return VINF_SUCCESS;
1141	}
1142
1143
1144	/**
1145	* @interface_method_impl{PDMUSBREG,pfnUsbSetInterface}
1146	*/
1147	static DECLCALLBACK(int) usbHidUsbSetInterface(PPDMUSBINS pUsbIns, uint8_t bInterfaceNumber, uint8_t bAlternateSetting)
1148	{
1149	RT_NOREF3(pUsbIns, bInterfaceNumber, bAlternateSetting);
1150	LogFlow(("usbHidUsbSetInterface/#%u: bInterfaceNumber=%u bAlternateSetting=%u\n", pUsbIns->iInstance, bInterfaceNumber, bAlternateSetting));
1151	Assert(bAlternateSetting == 0);
1152	return VINF_SUCCESS;
1153	}
1154
1155
1156	/**
1157	* @interface_method_impl{PDMUSBREG,pfnUsbSetConfiguration}
1158	*/
1159	static DECLCALLBACK(int) usbHidUsbSetConfiguration(PPDMUSBINS pUsbIns, uint8_t bConfigurationValue,
1160	const void pvOldCfgDesc, const void pvOldIfState, const void *pvNewCfgDesc)
1161	{
1162	RT_NOREF3(pvOldCfgDesc, pvOldIfState, pvNewCfgDesc);
1163	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1164	LogFlow(("usbHidUsbSetConfiguration/#%u: bConfigurationValue=%u\n", pUsbIns->iInstance, bConfigurationValue));
1165	Assert(bConfigurationValue == 1);
1166	RTCritSectEnter(&pThis->CritSect);
1167
1168	/*
1169	* If the same config is applied more than once, it's a kind of reset.
1170	*/
1171	if (pThis->bConfigurationValue == bConfigurationValue)
1172	usbHidResetWorker(pThis, NULL, true /fSetConfig/); /** @todo figure out the exact difference */
1173	pThis->bConfigurationValue = bConfigurationValue;
1174
1175	/*
1176	* Tell the other end that the keyboard is now enabled and wants
1177	* to receive keystrokes.
1178	*/
1179	pThis->Lun0.pDrv->pfnSetActive(pThis->Lun0.pDrv, true);
1180
1181	RTCritSectLeave(&pThis->CritSect);
1182	return VINF_SUCCESS;
1183	}
1184
1185
1186	/**
1187	* @interface_method_impl{PDMUSBREG,pfnUsbGetDescriptorCache}
1188	*/
1189	static DECLCALLBACK(PCPDMUSBDESCCACHE) usbHidUsbGetDescriptorCache(PPDMUSBINS pUsbIns)
1190	{
1191	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID); RT_NOREF_PV(pThis);
1192	LogFlow(("usbHidUsbGetDescriptorCache/#%u:\n", pUsbIns->iInstance));
1193	return &g_UsbHidDescCache;
1194	}
1195
1196
1197	/**
1198	* @interface_method_impl{PDMUSBREG,pfnUsbReset}
1199	*/
1200	static DECLCALLBACK(int) usbHidUsbReset(PPDMUSBINS pUsbIns, bool fResetOnLinux)
1201	{
1202	RT_NOREF1(fResetOnLinux);
1203	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1204	LogFlow(("usbHidUsbReset/#%u:\n", pUsbIns->iInstance));
1205	RTCritSectEnter(&pThis->CritSect);
1206
1207	int rc = usbHidResetWorker(pThis, NULL, false /fSetConfig/);
1208
1209	RTCritSectLeave(&pThis->CritSect);
1210	return rc;
1211	}
1212
1213
1214	/**
1215	* @interface_method_impl{PDMUSBREG,pfnDestruct}
1216	*/
1217	static DECLCALLBACK(void) usbHidDestruct(PPDMUSBINS pUsbIns)
1218	{
1219	PDMUSB_CHECK_VERSIONS_RETURN_VOID(pUsbIns);
1220	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1221	LogFlow(("usbHidDestruct/#%u:\n", pUsbIns->iInstance));
1222
1223	if (RTCritSectIsInitialized(&pThis->CritSect))
1224	{
1225	/* Let whoever runs in this critical section complete. */
1226	RTCritSectEnter(&pThis->CritSect);
1227	RTCritSectLeave(&pThis->CritSect);
1228	RTCritSectDelete(&pThis->CritSect);
1229	}
1230
1231	if (pThis->hEvtDoneQueue != NIL_RTSEMEVENT)
1232	{
1233	RTSemEventDestroy(pThis->hEvtDoneQueue);
1234	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1235	}
1236	}
1237
1238
1239	/**
1240	* @interface_method_impl{PDMUSBREG,pfnConstruct}
1241	*/
1242	static DECLCALLBACK(int) usbHidConstruct(PPDMUSBINS pUsbIns, int iInstance, PCFGMNODE pCfg, PCFGMNODE pCfgGlobal)
1243	{
1244	RT_NOREF1(pCfgGlobal);
1245	PDMUSB_CHECK_VERSIONS_RETURN(pUsbIns);
1246	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1247	Log(("usbHidConstruct/#%u:\n", iInstance));
1248
1249	/*
1250	* Perform the basic structure initialization first so the destructor
1251	* will not misbehave.
1252	*/
1253	pThis->pUsbIns = pUsbIns;
1254	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1255	usbHidQueueInit(&pThis->ToHostQueue);
1256	usbHidQueueInit(&pThis->DoneQueue);
1257
1258	int rc = RTCritSectInit(&pThis->CritSect);
1259	AssertRCReturn(rc, rc);
1260
1261	rc = RTSemEventCreate(&pThis->hEvtDoneQueue);
1262	AssertRCReturn(rc, rc);
1263
1264	/*
1265	* Validate and read the configuration.
1266	*/
1267	rc = CFGMR3ValidateConfig(pCfg, "/", "", "", "UsbHid", iInstance);
1268	if (RT_FAILURE(rc))
1269	return rc;
1270
1271	pThis->Lun0.IBase.pfnQueryInterface = usbHidKeyboardQueryInterface;
1272	pThis->Lun0.IPort.pfnPutEventHid = usbHidKeyboardPutEvent;
1273
1274	/*
1275	* Attach the keyboard driver.
1276	*/
1277	rc = PDMUsbHlpDriverAttach(pUsbIns, 0 /iLun/, &pThis->Lun0.IBase, &pThis->Lun0.pDrvBase, "Keyboard Port");
1278	if (RT_FAILURE(rc))
1279	return PDMUsbHlpVMSetError(pUsbIns, rc, RT_SRC_POS, N_("HID failed to attach keyboard driver"));
1280
1281	pThis->Lun0.pDrv = PDMIBASE_QUERY_INTERFACE(pThis->Lun0.pDrvBase, PDMIKEYBOARDCONNECTOR);
1282	if (!pThis->Lun0.pDrv)
1283	return PDMUsbHlpVMSetError(pUsbIns, VERR_PDM_MISSING_INTERFACE, RT_SRC_POS, N_("HID failed to query keyboard interface"));
1284
1285	return VINF_SUCCESS;
1286	}
1287
1288
1289	/**
1290	* The USB Human Interface Device (HID) Keyboard registration record.
1291	*/
1292	const PDMUSBREG g_UsbHidKbd =
1293	{
1294	/* u32Version */
1295	PDM_USBREG_VERSION,
1296	/* szName */
1297	"HidKeyboard",
1298	/* pszDescription */
1299	"USB HID Keyboard.",
1300	/* fFlags */
1301	0,
1302	/* cMaxInstances */
1303	~0U,
1304	/* cbInstance */
1305	sizeof(USBHID),
1306	/* pfnConstruct */
1307	usbHidConstruct,
1308	/* pfnDestruct */
1309	usbHidDestruct,
1310	/* pfnVMInitComplete */
1311	NULL,
1312	/* pfnVMPowerOn */
1313	NULL,
1314	/* pfnVMReset */
1315	NULL,
1316	/* pfnVMSuspend */
1317	NULL,
1318	/* pfnVMResume */
1319	NULL,
1320	/* pfnVMPowerOff */
1321	NULL,
1322	/* pfnHotPlugged */
1323	NULL,
1324	/* pfnHotUnplugged */
1325	NULL,
1326	/* pfnDriverAttach */
1327	NULL,
1328	/* pfnDriverDetach */
1329	NULL,
1330	/* pfnQueryInterface */
1331	NULL,
1332	/* pfnUsbReset */
1333	usbHidUsbReset,
1334	/* pfnUsbGetDescriptorCache */
1335	usbHidUsbGetDescriptorCache,
1336	/* pfnUsbSetConfiguration */
1337	usbHidUsbSetConfiguration,
1338	/* pfnUsbSetInterface */
1339	usbHidUsbSetInterface,
1340	/* pfnUsbClearHaltedEndpoint */
1341	usbHidUsbClearHaltedEndpoint,
1342	/* pfnUrbNew */
1343	NULL/usbHidUrbNew/,
1344	/* pfnUrbQueue */
1345	usbHidQueue,
1346	/* pfnUrbCancel */
1347	usbHidUrbCancel,
1348	/* pfnUrbReap */
1349	usbHidUrbReap,
1350	/* pfnWakeup */
1351	usbHidWakeup,
1352	/* u32TheEnd */
1353	PDM_USBREG_VERSION
1354	};

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source: vbox/trunk/src/VBox/Devices/Input/UsbKbd.cpp@ 87773

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