UsbKbd.cpp@ 54030

Last change on this file since 54030 was 51546, checked in by vboxsync, 10 years ago
UsbKbd: Added a brief theory of operation.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 44.2 KB

Line
1	/* $Id: UsbKbd.cpp 51546 2014-06-05 09:56:45Z vboxsync $ */
2	/** @file
3	* UsbKbd - USB Human Interface Device Emulation, Keyboard.
4	*/
5
6	/*
7	* Copyright (C) 2007-2012 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	* Header Files *
50	*******************************************************************************/
51	#define LOG_GROUP LOG_GROUP_USB_KBD
52	#include <VBox/vmm/pdmusb.h>
53	#include <VBox/log.h>
54	#include <VBox/err.h>
55	#include <iprt/assert.h>
56	#include <iprt/critsect.h>
57	#include <iprt/mem.h>
58	#include <iprt/semaphore.h>
59	#include <iprt/string.h>
60	#include <iprt/uuid.h>
61	#include "VBoxDD.h"
62
63
64	/*******************************************************************************
65	* Defined Constants And Macros *
66	*******************************************************************************/
67	/** @name USB HID string IDs
68	* @{ */
69	#define USBHID_STR_ID_MANUFACTURER 1
70	#define USBHID_STR_ID_PRODUCT 2
71	/** @} */
72
73	/** @name USB HID specific descriptor types
74	* @{ */
75	#define DT_IF_HID_DESCRIPTOR 0x21
76	#define DT_IF_HID_REPORT 0x22
77	/** @} */
78
79	/** @name USB HID vendor and product IDs
80	* @{ */
81	#define VBOX_USB_VENDOR 0x80EE
82	#define USBHID_PID_KEYBOARD 0x0010
83	/** @} */
84
85	/** @name USB HID class specific requests
86	* @{ */
87	#define HID_REQ_GET_REPORT 0x01
88	#define HID_REQ_GET_IDLE 0x02
89	#define HID_REQ_SET_REPORT 0x09
90	#define HID_REQ_SET_IDLE 0x0A
91	/** @} */
92
93	/** @name USB HID additional constants
94	* @{ */
95	/** The highest USB usage code reported by the VBox emulated keyboard */
96	#define VBOX_USB_MAX_USAGE_CODE 0xE7
97	/** The size of an array needed to store all USB usage codes */
98	#define VBOX_USB_USAGE_ARRAY_SIZE (VBOX_USB_MAX_USAGE_CODE + 1)
99	#define USBHID_USAGE_ROLL_OVER 1
100	/** The usage code of the first modifier key. */
101	#define USBHID_MODIFIER_FIRST 0xE0
102	/** The usage code of the last modifier key. */
103	#define USBHID_MODIFIER_LAST 0xE7
104	/** @} */
105
106	/*******************************************************************************
107	* Structures and Typedefs *
108	*******************************************************************************/
109
110	/**
111	* The USB HID request state.
112	*/
113	typedef enum USBHIDREQSTATE
114	{
115	/** Invalid status. */
116	USBHIDREQSTATE_INVALID = 0,
117	/** Ready to receive a new read request. */
118	USBHIDREQSTATE_READY,
119	/** Have (more) data for the host. */
120	USBHIDREQSTATE_DATA_TO_HOST,
121	/** Waiting to supply status information to the host. */
122	USBHIDREQSTATE_STATUS,
123	/** The end of the valid states. */
124	USBHIDREQSTATE_END
125	} USBHIDREQSTATE;
126
127
128	/**
129	* Endpoint status data.
130	*/
131	typedef struct USBHIDEP
132	{
133	bool fHalted;
134	} USBHIDEP;
135	/** Pointer to the endpoint status. */
136	typedef USBHIDEP *PUSBHIDEP;
137
138
139	/**
140	* A URB queue.
141	*/
142	typedef struct USBHIDURBQUEUE
143	{
144	/** The head pointer. */
145	PVUSBURB pHead;
146	/** Where to insert the next entry. */
147	PVUSBURB *ppTail;
148	} USBHIDURBQUEUE;
149	/** Pointer to a URB queue. */
150	typedef USBHIDURBQUEUE *PUSBHIDURBQUEUE;
151	/** Pointer to a const URB queue. */
152	typedef USBHIDURBQUEUE const *PCUSBHIDURBQUEUE;
153
154
155	/**
156	* The USB HID report structure for regular keys.
157	*/
158	typedef struct USBHIDK_REPORT
159	{
160	uint8_t ShiftState; /*< Modifier keys bitfield /
161	uint8_t Reserved; /*< Currently unused /
162	uint8_t aKeys[6]; /*< Normal keys /
163	} USBHIDK_REPORT, *PUSBHIDK_REPORT;
164
165	/**
166	* The USB HID instance data.
167	*/
168	typedef struct USBHID
169	{
170	/** Pointer back to the PDM USB Device instance structure. */
171	PPDMUSBINS pUsbIns;
172	/** Critical section protecting the device state. */
173	RTCRITSECT CritSect;
174
175	/** The current configuration.
176	* (0 - default, 1 - the one supported configuration, i.e configured.) */
177	uint8_t bConfigurationValue;
178	/** USB HID Idle value..
179	* (0 - only report state change, !=0 - report in bIdle * 4ms intervals.) */
180	uint8_t bIdle;
181	/** Endpoint 0 is the default control pipe, 1 is the dev->host interrupt one. */
182	USBHIDEP aEps[2];
183	/** The state of the HID (state machine).*/
184	USBHIDREQSTATE enmState;
185
186	/** Pending to-host queue.
187	* The URBs waiting here are waiting for data to become available.
188	*/
189	USBHIDURBQUEUE ToHostQueue;
190
191	/** Done queue
192	* The URBs stashed here are waiting to be reaped. */
193	USBHIDURBQUEUE DoneQueue;
194	/** Signalled when adding an URB to the done queue and fHaveDoneQueueWaiter
195	* is set. */
196	RTSEMEVENT hEvtDoneQueue;
197	/** Someone is waiting on the done queue. */
198	bool fHaveDoneQueueWaiter;
199	/** If device has pending changes. */
200	bool fHasPendingChanges;
201	/** Currently depressed keys */
202	uint8_t abDepressedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
203
204	/**
205	* Keyboard port - LUN#0.
206	*
207	* @implements PDMIBASE
208	* @implements PDMIKEYBOARDPORT
209	*/
210	struct
211	{
212	/** The base interface for the keyboard port. */
213	PDMIBASE IBase;
214	/** The keyboard port base interface. */
215	PDMIKEYBOARDPORT IPort;
216
217	/** The base interface of the attached keyboard driver. */
218	R3PTRTYPE(PPDMIBASE) pDrvBase;
219	/** The keyboard interface of the attached keyboard driver. */
220	R3PTRTYPE(PPDMIKEYBOARDCONNECTOR) pDrv;
221	} Lun0;
222	} USBHID;
223	/** Pointer to the USB HID instance data. */
224	typedef USBHID *PUSBHID;
225
226	/*******************************************************************************
227	* Global Variables *
228	*******************************************************************************/
229	static const PDMUSBDESCCACHESTRING g_aUsbHidStrings_en_US[] =
230	{
231	{ USBHID_STR_ID_MANUFACTURER, "VirtualBox" },
232	{ USBHID_STR_ID_PRODUCT, "USB Keyboard" },
233	};
234
235	static const PDMUSBDESCCACHELANG g_aUsbHidLanguages[] =
236	{
237	{ 0x0409, RT_ELEMENTS(g_aUsbHidStrings_en_US), g_aUsbHidStrings_en_US }
238	};
239
240	static const VUSBDESCENDPOINTEX g_aUsbHidEndpointDescs[] =
241	{
242	{
243	{
244	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
245	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
246	/* .bEndpointAddress = / 0x81 / ep=1, in */,
247	/* .bmAttributes = / 3 / interrupt */,
248	/* .wMaxPacketSize = */ 8,
249	/* .bInterval = */ 10,
250	},
251	/* .pvMore = */ NULL,
252	/* .pvClass = */ NULL,
253	/* .cbClass = */ 0
254	},
255	};
256
257	/** HID report descriptor. */
258	static const uint8_t g_UsbHidReportDesc[] =
259	{
260	/* Usage Page / 0x05, 0x01, / Generic Desktop */
261	/* Usage / 0x09, 0x06, / Keyboard */
262	/* Collection / 0xA1, 0x01, / Application */
263	/* Usage Page / 0x05, 0x07, / Keyboard */
264	/* Usage Minimum / 0x19, 0xE0, / Left Ctrl Key */
265	/* Usage Maximum / 0x29, 0xE7, / Right GUI Key */
266	/* Logical Minimum / 0x15, 0x00, / 0 */
267	/* Logical Maximum / 0x25, 0x01, / 1 */
268	/* Report Count / 0x95, 0x08, / 8 */
269	/* Report Size / 0x75, 0x01, / 1 */
270	/* Input / 0x81, 0x02, / Data, Value, Absolute, Bit field */
271	/* Report Count / 0x95, 0x01, / 1 */
272	/* Report Size / 0x75, 0x08, / 8 (padding bits) */
273	/* Input / 0x81, 0x01, / Constant, Array, Absolute, Bit field */
274	/* Report Count / 0x95, 0x05, / 5 */
275	/* Report Size / 0x75, 0x01, / 1 */
276	/* Usage Page / 0x05, 0x08, / LEDs */
277	/* Usage Minimum / 0x19, 0x01, / Num Lock */
278	/* Usage Maximum / 0x29, 0x05, / Kana */
279	/* Output / 0x91, 0x02, / Data, Value, Absolute, Non-volatile,Bit field */
280	/* Report Count / 0x95, 0x01, / 1 */
281	/* Report Size / 0x75, 0x03, / 3 */
282	/* Output / 0x91, 0x01, / Constant, Value, Absolute, Non-volatile, Bit field */
283	/* Report Count / 0x95, 0x06, / 6 */
284	/* Report Size / 0x75, 0x08, / 8 */
285	/* Logical Minimum / 0x15, 0x00, / 0 */
286	/* Logical Maximum / 0x26, 0xFF,0x00,/ 255 */
287	/* Usage Page / 0x05, 0x07, / Keyboard */
288	/* Usage Minimum / 0x19, 0x00, / 0 */
289	/* Usage Maximum / 0x29, 0xFF, / 255 */
290	/* Input / 0x81, 0x00, / Data, Array, Absolute, Bit field */
291	/* End Collection */ 0xC0,
292	};
293
294	/** Additional HID class interface descriptor. */
295	static const uint8_t g_UsbHidIfHidDesc[] =
296	{
297	/* .bLength = */ 0x09,
298	/* .bDescriptorType = / 0x21, / HID */
299	/* .bcdHID = / 0x10, 0x01, / 1.1 */
300	/* .bCountryCode = / 0x0D, / International (ISO) */
301	/* .bNumDescriptors = */ 1,
302	/* .bDescriptorType = / 0x22, / Report */
303	/* .wDescriptorLength = */ sizeof(g_UsbHidReportDesc), 0x00
304	};
305
306	static const VUSBDESCINTERFACEEX g_UsbHidInterfaceDesc =
307	{
308	{
309	/* .bLength = */ sizeof(VUSBDESCINTERFACE),
310	/* .bDescriptorType = */ VUSB_DT_INTERFACE,
311	/* .bInterfaceNumber = */ 0,
312	/* .bAlternateSetting = */ 0,
313	/* .bNumEndpoints = */ 1,
314	/* .bInterfaceClass = / 3 / HID */,
315	/* .bInterfaceSubClass = / 1 / Boot Interface */,
316	/* .bInterfaceProtocol = / 1 / Keyboard */,
317	/* .iInterface = */ 0
318	},
319	/* .pvMore = */ NULL,
320	/* .pvClass = */ &g_UsbHidIfHidDesc,
321	/* .cbClass = */ sizeof(g_UsbHidIfHidDesc),
322	&g_aUsbHidEndpointDescs[0],
323	/* .pIAD = */ NULL,
324	/* .cbIAD = */ 0
325	};
326
327	static const VUSBINTERFACE g_aUsbHidInterfaces[] =
328	{
329	{ &g_UsbHidInterfaceDesc, /* .cSettings = */ 1 },
330	};
331
332	static const VUSBDESCCONFIGEX g_UsbHidConfigDesc =
333	{
334	{
335	/* .bLength = */ sizeof(VUSBDESCCONFIG),
336	/* .bDescriptorType = */ VUSB_DT_CONFIG,
337	/* .wTotalLength = / 0 / recalculated on read */,
338	/* .bNumInterfaces = */ RT_ELEMENTS(g_aUsbHidInterfaces),
339	/* .bConfigurationValue =*/ 1,
340	/* .iConfiguration = */ 0,
341	/* .bmAttributes = */ RT_BIT(7),
342	/* .MaxPower = / 50 / 100mA */
343	},
344	NULL, /* pvMore */
345	&g_aUsbHidInterfaces[0],
346	NULL /* pvOriginal */
347	};
348
349	static const VUSBDESCDEVICE g_UsbHidDeviceDesc =
350	{
351	/* .bLength = */ sizeof(g_UsbHidDeviceDesc),
352	/* .bDescriptorType = */ VUSB_DT_DEVICE,
353	/* .bcdUsb = / 0x110, / 1.1 */
354	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
355	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
356	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
357	/* .bMaxPacketSize0 = */ 8,
358	/* .idVendor = */ VBOX_USB_VENDOR,
359	/* .idProduct = */ USBHID_PID_KEYBOARD,
360	/* .bcdDevice = / 0x0100, / 1.0 */
361	/* .iManufacturer = */ USBHID_STR_ID_MANUFACTURER,
362	/* .iProduct = */ USBHID_STR_ID_PRODUCT,
363	/* .iSerialNumber = */ 0,
364	/* .bNumConfigurations = */ 1
365	};
366
367	static const PDMUSBDESCCACHE g_UsbHidDescCache =
368	{
369	/* .pDevice = */ &g_UsbHidDeviceDesc,
370	/* .paConfigs = */ &g_UsbHidConfigDesc,
371	/* .paLanguages = */ g_aUsbHidLanguages,
372	/* .cLanguages = */ RT_ELEMENTS(g_aUsbHidLanguages),
373	/* .fUseCachedDescriptors = */ true,
374	/* .fUseCachedStringsDescriptors = */ true
375	};
376
377
378	/*******************************************************************************
379	* Internal Functions *
380	*******************************************************************************/
381
382
383	/**
384	* Initializes an URB queue.
385	*
386	* @param pQueue The URB queue.
387	*/
388	static void usbHidQueueInit(PUSBHIDURBQUEUE pQueue)
389	{
390	pQueue->pHead = NULL;
391	pQueue->ppTail = &pQueue->pHead;
392	}
393
394	/**
395	* Inserts an URB at the end of the queue.
396	*
397	* @param pQueue The URB queue.
398	* @param pUrb The URB to insert.
399	*/
400	DECLINLINE(void) usbHidQueueAddTail(PUSBHIDURBQUEUE pQueue, PVUSBURB pUrb)
401	{
402	pUrb->Dev.pNext = NULL;
403	*pQueue->ppTail = pUrb;
404	pQueue->ppTail = &pUrb->Dev.pNext;
405	}
406
407
408	/**
409	* Unlinks the head of the queue and returns it.
410	*
411	* @returns The head entry.
412	* @param pQueue The URB queue.
413	*/
414	DECLINLINE(PVUSBURB) usbHidQueueRemoveHead(PUSBHIDURBQUEUE pQueue)
415	{
416	PVUSBURB pUrb = pQueue->pHead;
417	if (pUrb)
418	{
419	PVUSBURB pNext = pUrb->Dev.pNext;
420	pQueue->pHead = pNext;
421	if (!pNext)
422	pQueue->ppTail = &pQueue->pHead;
423	else
424	pUrb->Dev.pNext = NULL;
425	}
426	return pUrb;
427	}
428
429
430	/**
431	* Removes an URB from anywhere in the queue.
432	*
433	* @returns true if found, false if not.
434	* @param pQueue The URB queue.
435	* @param pUrb The URB to remove.
436	*/
437	DECLINLINE(bool) usbHidQueueRemove(PUSBHIDURBQUEUE pQueue, PVUSBURB pUrb)
438	{
439	PVUSBURB pCur = pQueue->pHead;
440	if (pCur == pUrb)
441	pQueue->pHead = pUrb->Dev.pNext;
442	else
443	{
444	while (pCur)
445	{
446	if (pCur->Dev.pNext == pUrb)
447	{
448	pCur->Dev.pNext = pUrb->Dev.pNext;
449	break;
450	}
451	pCur = pCur->Dev.pNext;
452	}
453	if (!pCur)
454	return false;
455	}
456	if (!pUrb->Dev.pNext)
457	pQueue->ppTail = &pQueue->pHead;
458	return true;
459	}
460
461
462	/**
463	* Checks if the queue is empty or not.
464	*
465	* @returns true if it is, false if it isn't.
466	* @param pQueue The URB queue.
467	*/
468	DECLINLINE(bool) usbHidQueueIsEmpty(PCUSBHIDURBQUEUE pQueue)
469	{
470	return pQueue->pHead == NULL;
471	}
472
473
474	/**
475	* Links an URB into the done queue.
476	*
477	* @param pThis The HID instance.
478	* @param pUrb The URB.
479	*/
480	static void usbHidLinkDone(PUSBHID pThis, PVUSBURB pUrb)
481	{
482	usbHidQueueAddTail(&pThis->DoneQueue, pUrb);
483
484	if (pThis->fHaveDoneQueueWaiter)
485	{
486	int rc = RTSemEventSignal(pThis->hEvtDoneQueue);
487	AssertRC(rc);
488	}
489	}
490
491
492	/**
493	* Completes the URB with a stalled state, halting the pipe.
494	*/
495	static int usbHidCompleteStall(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb, const char *pszWhy)
496	{
497	Log(("usbHidCompleteStall/#%u: pUrb=%p:%s: %s\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, pszWhy));
498
499	pUrb->enmStatus = VUSBSTATUS_STALL;
500
501	/** @todo figure out if the stall is global or pipe-specific or both. */
502	if (pEp)
503	pEp->fHalted = true;
504	else
505	{
506	pThis->aEps[0].fHalted = true;
507	pThis->aEps[1].fHalted = true;
508	}
509
510	usbHidLinkDone(pThis, pUrb);
511	return VINF_SUCCESS;
512	}
513
514
515	/**
516	* Completes the URB with a OK state.
517	*/
518	static int usbHidCompleteOk(PUSBHID pThis, PVUSBURB pUrb, size_t cbData)
519	{
520	Log(("usbHidCompleteOk/#%u: pUrb=%p:%s cbData=%#zx\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, cbData));
521
522	pUrb->enmStatus = VUSBSTATUS_OK;
523	pUrb->cbData = (uint32_t)cbData;
524
525	usbHidLinkDone(pThis, pUrb);
526	return VINF_SUCCESS;
527	}
528
529
530	/**
531	* Reset worker for usbHidUsbReset, usbHidUsbSetConfiguration and
532	* usbHidHandleDefaultPipe.
533	*
534	* @returns VBox status code.
535	* @param pThis The HID instance.
536	* @param pUrb Set when usbHidHandleDefaultPipe is the
537	* caller.
538	* @param fSetConfig Set when usbHidUsbSetConfiguration is the
539	* caller.
540	*/
541	static int usbHidResetWorker(PUSBHID pThis, PVUSBURB pUrb, bool fSetConfig)
542	{
543	/*
544	* Deactivate the keyboard.
545	*/
546	pThis->Lun0.pDrv->pfnSetActive(pThis->Lun0.pDrv, false);
547
548	/*
549	* Reset the device state.
550	*/
551	pThis->enmState = USBHIDREQSTATE_READY;
552	pThis->bIdle = 0;
553	pThis->fHasPendingChanges = false;
554
555	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aEps); i++)
556	pThis->aEps[i].fHalted = false;
557
558	if (!pUrb && !fSetConfig) /* (only device reset) */
559	pThis->bConfigurationValue = 0; /* default */
560
561	/*
562	* Ditch all pending URBs.
563	*/
564	PVUSBURB pCurUrb;
565	while ((pCurUrb = usbHidQueueRemoveHead(&pThis->ToHostQueue)) != NULL)
566	{
567	pCurUrb->enmStatus = VUSBSTATUS_CRC;
568	usbHidLinkDone(pThis, pCurUrb);
569	}
570
571	if (pUrb)
572	return usbHidCompleteOk(pThis, pUrb, 0);
573	return VINF_SUCCESS;
574	}
575
576	/**
577	* Returns true if the usage code corresponds to a keyboard modifier key
578	* (left or right ctrl, shift, alt or GUI). The usage codes for these keys
579	* are the range 0xe0 to 0xe7.
580	*/
581	static bool usbHidUsageCodeIsModifier(uint8_t u8Usage)
582	{
583	return u8Usage >= USBHID_MODIFIER_FIRST && u8Usage <= USBHID_MODIFIER_LAST;
584	}
585
586	/**
587	* Convert a USB HID usage code to a keyboard modifier flag. The arithmetic
588	* is simple: the modifier keys have usage codes from 0xe0 to 0xe7, and the
589	* lower nibble is the bit number of the flag.
590	*/
591	static uint8_t usbHidModifierToFlag(uint8_t u8Usage)
592	{
593	Assert(usbHidUsageCodeIsModifier(u8Usage));
594	return RT_BIT(u8Usage & 0xf);
595	}
596
597	/**
598	* Create a USB HID keyboard report reflecting the current state of the
599	* keyboard (up/down keys).
600	*/
601	static void usbHidBuildReport(PUSBHIDK_REPORT pReport, uint8_t *pabDepressedKeys)
602	{
603	unsigned iBuf = 0;
604	RT_ZERO(*pReport);
605	for (unsigned iKey = 0; iKey < VBOX_USB_USAGE_ARRAY_SIZE; ++iKey)
606	{
607	Assert(iBuf <= RT_ELEMENTS(pReport->aKeys));
608	if (pabDepressedKeys[iKey])
609	{
610	if (usbHidUsageCodeIsModifier(iKey))
611	pReport->ShiftState \|= usbHidModifierToFlag(iKey);
612	else if (iBuf == RT_ELEMENTS(pReport->aKeys))
613	{
614	/* The USB HID spec says that the entire vector should be
615	* set to ErrorRollOver on overflow. We don't mind if this
616	* path is taken several times for one report. */
617	for (unsigned iBuf2 = 0;
618	iBuf2 < RT_ELEMENTS(pReport->aKeys); ++iBuf2)
619	pReport->aKeys[iBuf2] = USBHID_USAGE_ROLL_OVER;
620	}
621	else
622	{
623	pReport->aKeys[iBuf] = iKey;
624	++iBuf;
625	}
626	}
627	}
628	}
629
630	/**
631	* Handles a SET_REPORT request sent to the default control pipe. Note
632	* that unrecognized requests are ignored without reporting an error.
633	*/
634	static void usbHidSetReport(PUSBHID pThis, PVUSBURB pUrb)
635	{
636	PVUSBSETUP pSetup = (PVUSBSETUP)&pUrb->abData[0];
637	Assert(pSetup->bRequest == HID_REQ_SET_REPORT);
638
639	/* The LED report is the 3rd report, ID 0 (-> wValue 0x200). */
640	if (pSetup->wIndex == 0 && pSetup->wLength == 1 && pSetup->wValue == 0x200)
641	{
642	PDMKEYBLEDS enmLeds = PDMKEYBLEDS_NONE;
643	uint8_t u8LEDs = pUrb->abData[sizeof(*pSetup)];
644	LogFlowFunc(("Setting keybooard LEDs to u8LEDs=%02X\n", u8LEDs));
645
646	/* Translate LED state to PDM format and send upstream. */
647	if (u8LEDs & 0x01)
648	enmLeds = (PDMKEYBLEDS)(enmLeds \| PDMKEYBLEDS_NUMLOCK);
649	if (u8LEDs & 0x02)
650	enmLeds = (PDMKEYBLEDS)(enmLeds \| PDMKEYBLEDS_CAPSLOCK);
651	if (u8LEDs & 0x04)
652	enmLeds = (PDMKEYBLEDS)(enmLeds \| PDMKEYBLEDS_SCROLLLOCK);
653
654	pThis->Lun0.pDrv->pfnLedStatusChange(pThis->Lun0.pDrv, enmLeds);
655	}
656	}
657
658	/**
659	* Sends a state report to the guest if there is a URB available.
660	*/
661	static void usbHidSendReport(PUSBHID pThis)
662	{
663	PVUSBURB pUrb = usbHidQueueRemoveHead(&pThis->ToHostQueue);
664	if (pUrb)
665	{
666	PUSBHIDK_REPORT pReport = (PUSBHIDK_REPORT)&pUrb->abData[0];
667
668	usbHidBuildReport(pReport, pThis->abDepressedKeys);
669	pThis->fHasPendingChanges = false;
670	usbHidCompleteOk(pThis, pUrb, sizeof(*pReport));
671	}
672	else
673	{
674	Log2(("No available URB for USB kbd\n"));
675	pThis->fHasPendingChanges = true;
676	}
677	}
678
679	/**
680	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
681	*/
682	static DECLCALLBACK(void ) usbHidKeyboardQueryInterface(PPDMIBASE pInterface, const char pszIID)
683	{
684	PUSBHID pThis = RT_FROM_MEMBER(pInterface, USBHID, Lun0.IBase);
685	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->Lun0.IBase);
686	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIKEYBOARDPORT, &pThis->Lun0.IPort);
687	return NULL;
688	}
689
690	/* See the PS2K device. */
691	#define KRSP_BAT_FAIL 0xFC /* Also a 'release keys' signal. */
692
693	/**
694	* Keyboard event handler.
695	*
696	* @returns VBox status code.
697	* @param pInterface Pointer to the keyboard port interface (KBDState::Keyboard.IPort).
698	* @param u32UsageCode The key usage ID.
699	*/
700	static DECLCALLBACK(int) usbHidKeyboardPutEvent(PPDMIKEYBOARDPORT pInterface, uint32_t u32UsageCode)
701	{
702	PUSBHID pThis = RT_FROM_MEMBER(pInterface, USBHID, Lun0.IPort);
703	uint8_t u8HidCode;
704	bool fKeyDown;
705	bool fHaveEvent = true;
706	int rc = VINF_SUCCESS;
707
708	RTCritSectEnter(&pThis->CritSect);
709
710	/* Let's see what we got... */
711	fKeyDown = !(u32UsageCode & 0x80000000);
712	u8HidCode = u32UsageCode & 0xFF;
713	AssertReturn(u8HidCode <= VBOX_USB_MAX_USAGE_CODE, VERR_INTERNAL_ERROR);
714
715	LogFlowFunc(("key %s: 0x%x\n", fKeyDown ? "down" : "up", u8HidCode));
716
717	/*
718	* Due to host key repeat, we can get key events for keys which are
719	* already depressed. Drop those right here.
720	*/
721	if (fKeyDown && pThis->abDepressedKeys[u8HidCode])
722	fHaveEvent = false;
723
724	/* If there is already a pending event, we won't accept a new one yet. */
725	if (pThis->fHasPendingChanges && fHaveEvent)
726	{
727	rc = VERR_TRY_AGAIN;
728	}
729	else if (fHaveEvent)
730	{
731	if (RT_UNLIKELY(u32UsageCode == KRSP_BAT_FAIL))
732	{
733	/* Clear all currently depressed and unreported keys. */
734	RT_ZERO(pThis->abDepressedKeys);
735	}
736	else
737	{
738	/* Regular key event - update keyboard state. */
739	if (fKeyDown)
740	pThis->abDepressedKeys[u8HidCode] = 1;
741	else
742	pThis->abDepressedKeys[u8HidCode] = 0;
743	}
744
745	/*
746	* Try sending a report. Note that we already decided to consume the
747	* event regardless of whether a URB is available or not. If it's not,
748	* we will simply not accept any further events.
749	*/
750	usbHidSendReport(pThis);
751	}
752
753	RTCritSectLeave(&pThis->CritSect);
754
755	return rc;
756	}
757
758	/**
759	* @copydoc PDMUSBREG::pfnUrbReap
760	*/
761	static DECLCALLBACK(PVUSBURB) usbHidUrbReap(PPDMUSBINS pUsbIns, RTMSINTERVAL cMillies)
762	{
763	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
764	//LogFlow(("usbHidUrbReap/#%u: cMillies=%u\n", pUsbIns->iInstance, cMillies));
765
766	RTCritSectEnter(&pThis->CritSect);
767
768	PVUSBURB pUrb = usbHidQueueRemoveHead(&pThis->DoneQueue);
769	if (!pUrb && cMillies)
770	{
771	/* Wait */
772	pThis->fHaveDoneQueueWaiter = true;
773	RTCritSectLeave(&pThis->CritSect);
774
775	RTSemEventWait(pThis->hEvtDoneQueue, cMillies);
776
777	RTCritSectEnter(&pThis->CritSect);
778	pThis->fHaveDoneQueueWaiter = false;
779
780	pUrb = usbHidQueueRemoveHead(&pThis->DoneQueue);
781	}
782
783	RTCritSectLeave(&pThis->CritSect);
784
785	if (pUrb)
786	Log(("usbHidUrbReap/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
787	return pUrb;
788	}
789
790
791	/**
792	* @copydoc PDMUSBREG::pfnWakeup
793	*/
794	static DECLCALLBACK(int) usbHidWakeup(PPDMUSBINS pUsbIns)
795	{
796	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
797
798	return RTSemEventSignal(pThis->hEvtDoneQueue);
799	}
800
801
802	/**
803	* @copydoc PDMUSBREG::pfnUrbCancel
804	*/
805	static DECLCALLBACK(int) usbHidUrbCancel(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
806	{
807	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
808	LogFlow(("usbHidUrbCancel/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
809	RTCritSectEnter(&pThis->CritSect);
810
811	/*
812	* Remove the URB from the to-host queue and move it onto the done queue.
813	*/
814	if (usbHidQueueRemove(&pThis->ToHostQueue, pUrb))
815	usbHidLinkDone(pThis, pUrb);
816
817	RTCritSectLeave(&pThis->CritSect);
818	return VINF_SUCCESS;
819	}
820
821
822	/**
823	* Handles request sent to the inbound (device to host) interrupt pipe. This is
824	* rather different from bulk requests because an interrupt read URB may complete
825	* after arbitrarily long time.
826	*/
827	static int usbHidHandleIntrDevToHost(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb)
828	{
829	/*
830	* Stall the request if the pipe is halted.
831	*/
832	if (RT_UNLIKELY(pEp->fHalted))
833	return usbHidCompleteStall(pThis, NULL, pUrb, "Halted pipe");
834
835	/*
836	* Deal with the URB according to the state.
837	*/
838	switch (pThis->enmState)
839	{
840	/*
841	* We've data left to transfer to the host.
842	*/
843	case USBHIDREQSTATE_DATA_TO_HOST:
844	{
845	AssertFailed();
846	Log(("usbHidHandleIntrDevToHost: Entering STATUS\n"));
847	return usbHidCompleteOk(pThis, pUrb, 0);
848	}
849
850	/*
851	* Status transfer.
852	*/
853	case USBHIDREQSTATE_STATUS:
854	{
855	AssertFailed();
856	Log(("usbHidHandleIntrDevToHost: Entering READY\n"));
857	pThis->enmState = USBHIDREQSTATE_READY;
858	return usbHidCompleteOk(pThis, pUrb, 0);
859	}
860
861	case USBHIDREQSTATE_READY:
862	usbHidQueueAddTail(&pThis->ToHostQueue, pUrb);
863	/* If device was not set idle, send the current report right away. */
864	if (pThis->bIdle != 0 \|\| pThis->fHasPendingChanges)
865	{
866	usbHidSendReport(pThis);
867	LogFlow(("usbHidHandleIntrDevToHost: Sent report via %p:%s\n", pUrb, pUrb->pszDesc));
868	Assert(!pThis->fHasPendingChanges); /* Since we just got a URB... */
869	/* There may be more input queued up. Ask for it now. */
870	pThis->Lun0.pDrv->pfnFlushQueue(pThis->Lun0.pDrv);
871	}
872	return VINF_SUCCESS;
873
874	/*
875	* Bad states, stall.
876	*/
877	default:
878	Log(("usbHidHandleIntrDevToHost: enmState=%d cbData=%#x\n", pThis->enmState, pUrb->cbData));
879	return usbHidCompleteStall(pThis, NULL, pUrb, "Really bad state (D2H)!");
880	}
881	}
882
883
884	/**
885	* Handles request sent to the default control pipe.
886	*/
887	static int usbHidHandleDefaultPipe(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb)
888	{
889	PVUSBSETUP pSetup = (PVUSBSETUP)&pUrb->abData[0];
890	LogFlow(("usbHidHandleDefaultPipe: cbData=%d\n", pUrb->cbData));
891
892	AssertReturn(pUrb->cbData >= sizeof(*pSetup), VERR_VUSB_FAILED_TO_QUEUE_URB);
893
894	if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_STANDARD)
895	{
896	switch (pSetup->bRequest)
897	{
898	case VUSB_REQ_GET_DESCRIPTOR:
899	{
900	switch (pSetup->bmRequestType)
901	{
902	case VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
903	{
904	switch (pSetup->wValue >> 8)
905	{
906	case VUSB_DT_STRING:
907	Log(("usbHid: GET_DESCRIPTOR DT_STRING wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
908	break;
909	default:
910	Log(("usbHid: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
911	break;
912	}
913	break;
914	}
915
916	case VUSB_TO_INTERFACE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
917	{
918	switch (pSetup->wValue >> 8)
919	{
920	case DT_IF_HID_DESCRIPTOR:
921	{
922	uint32_t cbCopy;
923
924	/* Returned data is written after the setup message. */
925	cbCopy = pUrb->cbData - sizeof(*pSetup);
926	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbHidIfHidDesc));
927	Log(("usbHidKbd: GET_DESCRIPTOR DT_IF_HID_DESCRIPTOR wValue=%#x wIndex=%#x cbCopy=%#x\n", pSetup->wValue, pSetup->wIndex, cbCopy));
928	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbHidIfHidDesc, cbCopy);
929	return usbHidCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
930	}
931
932	case DT_IF_HID_REPORT:
933	{
934	uint32_t cbCopy;
935
936	/* Returned data is written after the setup message. */
937	cbCopy = pUrb->cbData - sizeof(*pSetup);
938	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbHidReportDesc));
939	Log(("usbHid: GET_DESCRIPTOR DT_IF_HID_REPORT wValue=%#x wIndex=%#x cbCopy=%#x\n", pSetup->wValue, pSetup->wIndex, cbCopy));
940	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbHidReportDesc, cbCopy);
941	return usbHidCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
942	}
943
944	default:
945	Log(("usbHid: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
946	break;
947	}
948	break;
949	}
950
951	default:
952	Log(("usbHid: Bad GET_DESCRIPTOR req: bmRequestType=%#x\n", pSetup->bmRequestType));
953	return usbHidCompleteStall(pThis, pEp, pUrb, "Bad GET_DESCRIPTOR");
954	}
955	break;
956	}
957
958	case VUSB_REQ_GET_STATUS:
959	{
960	uint16_t wRet = 0;
961
962	if (pSetup->wLength != 2)
963	{
964	Log(("usbHid: Bad GET_STATUS req: wLength=%#x\n", pSetup->wLength));
965	break;
966	}
967	Assert(pSetup->wValue == 0);
968	switch (pSetup->bmRequestType)
969	{
970	case VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
971	{
972	Assert(pSetup->wIndex == 0);
973	Log(("usbHid: GET_STATUS (device)\n"));
974	wRet = 0; /* Not self-powered, no remote wakeup. */
975	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
976	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
977	}
978
979	case VUSB_TO_INTERFACE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
980	{
981	if (pSetup->wIndex == 0)
982	{
983	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
984	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
985	}
986	else
987	{
988	Log(("usbHid: GET_STATUS (interface) invalid, wIndex=%#x\n", pSetup->wIndex));
989	}
990	break;
991	}
992
993	case VUSB_TO_ENDPOINT \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
994	{
995	if (pSetup->wIndex < RT_ELEMENTS(pThis->aEps))
996	{
997	wRet = pThis->aEps[pSetup->wIndex].fHalted ? 1 : 0;
998	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
999	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
1000	}
1001	else
1002	{
1003	Log(("usbHid: GET_STATUS (endpoint) invalid, wIndex=%#x\n", pSetup->wIndex));
1004	}
1005	break;
1006	}
1007
1008	default:
1009	Log(("usbHid: Bad GET_STATUS req: bmRequestType=%#x\n", pSetup->bmRequestType));
1010	return usbHidCompleteStall(pThis, pEp, pUrb, "Bad GET_STATUS");
1011	}
1012	break;
1013	}
1014
1015	case VUSB_REQ_CLEAR_FEATURE:
1016	break;
1017	}
1018
1019	/** @todo implement this. */
1020	Log(("usbHid: Implement standard request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1021	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1022
1023	usbHidCompleteStall(pThis, pEp, pUrb, "TODO: standard request stuff");
1024	}
1025	else if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_CLASS)
1026	{
1027	switch (pSetup->bRequest)
1028	{
1029	case HID_REQ_SET_IDLE:
1030	{
1031	switch (pSetup->bmRequestType)
1032	{
1033	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_DEVICE:
1034	{
1035	Log(("usbHid: SET_IDLE wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1036	pThis->bIdle = pSetup->wValue >> 8;
1037	/* Consider 24ms to mean zero for keyboards (see IOUSBHIDDriver) */
1038	if (pThis->bIdle == 6) pThis->bIdle = 0;
1039	return usbHidCompleteOk(pThis, pUrb, 0);
1040	}
1041	break;
1042	}
1043	break;
1044	}
1045	case HID_REQ_GET_IDLE:
1046	{
1047	switch (pSetup->bmRequestType)
1048	{
1049	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_HOST:
1050	{
1051	Log(("usbHid: GET_IDLE wValue=%#x wIndex=%#x, returning %#x\n", pSetup->wValue, pSetup->wIndex, pThis->bIdle));
1052	pUrb->abData[sizeof(*pSetup)] = pThis->bIdle;
1053	return usbHidCompleteOk(pThis, pUrb, 1);
1054	}
1055	break;
1056	}
1057	break;
1058	}
1059	case HID_REQ_SET_REPORT:
1060	{
1061	switch (pSetup->bmRequestType)
1062	{
1063	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_DEVICE:
1064	{
1065	Log(("usbHid: SET_REPORT wValue=%#x wIndex=%#x wLength=%#x\n", pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1066	usbHidSetReport(pThis, pUrb);
1067	return usbHidCompleteOk(pThis, pUrb, 0);
1068	}
1069	break;
1070	}
1071	break;
1072	}
1073	}
1074	Log(("usbHid: Unimplemented class request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1075	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1076
1077	usbHidCompleteStall(pThis, pEp, pUrb, "TODO: class request stuff");
1078	}
1079	else
1080	{
1081	Log(("usbHid: Unknown control msg: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1082	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1083	return usbHidCompleteStall(pThis, pEp, pUrb, "Unknown control msg");
1084	}
1085
1086	return VINF_SUCCESS;
1087	}
1088
1089
1090	/**
1091	* @copydoc PDMUSBREG::pfnUrbQueue
1092	*/
1093	static DECLCALLBACK(int) usbHidQueue(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
1094	{
1095	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1096	LogFlow(("usbHidQueue/#%u: pUrb=%p:%s EndPt=%#x\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc, pUrb->EndPt));
1097	RTCritSectEnter(&pThis->CritSect);
1098
1099	/*
1100	* Parse on a per end-point basis.
1101	*/
1102	int rc;
1103	switch (pUrb->EndPt)
1104	{
1105	case 0:
1106	rc = usbHidHandleDefaultPipe(pThis, &pThis->aEps[0], pUrb);
1107	break;
1108
1109	case 0x81:
1110	AssertFailed();
1111	case 0x01:
1112	rc = usbHidHandleIntrDevToHost(pThis, &pThis->aEps[1], pUrb);
1113	break;
1114
1115	default:
1116	AssertMsgFailed(("EndPt=%d\n", pUrb->EndPt));
1117	rc = VERR_VUSB_FAILED_TO_QUEUE_URB;
1118	break;
1119	}
1120
1121	RTCritSectLeave(&pThis->CritSect);
1122	return rc;
1123	}
1124
1125
1126	/**
1127	* @copydoc PDMUSBREG::pfnUsbClearHaltedEndpoint
1128	*/
1129	static DECLCALLBACK(int) usbHidUsbClearHaltedEndpoint(PPDMUSBINS pUsbIns, unsigned uEndpoint)
1130	{
1131	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1132	LogFlow(("usbHidUsbClearHaltedEndpoint/#%u: uEndpoint=%#x\n", pUsbIns->iInstance, uEndpoint));
1133
1134	if ((uEndpoint & ~0x80) < RT_ELEMENTS(pThis->aEps))
1135	{
1136	RTCritSectEnter(&pThis->CritSect);
1137	pThis->aEps[(uEndpoint & ~0x80)].fHalted = false;
1138	RTCritSectLeave(&pThis->CritSect);
1139	}
1140
1141	return VINF_SUCCESS;
1142	}
1143
1144
1145	/**
1146	* @copydoc PDMUSBREG::pfnUsbSetInterface
1147	*/
1148	static DECLCALLBACK(int) usbHidUsbSetInterface(PPDMUSBINS pUsbIns, uint8_t bInterfaceNumber, uint8_t bAlternateSetting)
1149	{
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	* @copydoc 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	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1163	LogFlow(("usbHidUsbSetConfiguration/#%u: bConfigurationValue=%u\n", pUsbIns->iInstance, bConfigurationValue));
1164	Assert(bConfigurationValue == 1);
1165	RTCritSectEnter(&pThis->CritSect);
1166
1167	/*
1168	* If the same config is applied more than once, it's a kind of reset.
1169	*/
1170	if (pThis->bConfigurationValue == bConfigurationValue)
1171	usbHidResetWorker(pThis, NULL, true /fSetConfig/); /** @todo figure out the exact difference */
1172	pThis->bConfigurationValue = bConfigurationValue;
1173
1174	/*
1175	* Tell the other end that the keyboard is now enabled and wants
1176	* to receive keystrokes.
1177	*/
1178	pThis->Lun0.pDrv->pfnSetActive(pThis->Lun0.pDrv, true);
1179
1180	RTCritSectLeave(&pThis->CritSect);
1181	return VINF_SUCCESS;
1182	}
1183
1184
1185	/**
1186	* @copydoc PDMUSBREG::pfnUsbGetDescriptorCache
1187	*/
1188	static DECLCALLBACK(PCPDMUSBDESCCACHE) usbHidUsbGetDescriptorCache(PPDMUSBINS pUsbIns)
1189	{
1190	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1191	LogFlow(("usbHidUsbGetDescriptorCache/#%u:\n", pUsbIns->iInstance));
1192	return &g_UsbHidDescCache;
1193	}
1194
1195
1196	/**
1197	* @copydoc PDMUSBREG::pfnUsbReset
1198	*/
1199	static DECLCALLBACK(int) usbHidUsbReset(PPDMUSBINS pUsbIns, bool fResetOnLinux)
1200	{
1201	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1202	LogFlow(("usbHidUsbReset/#%u:\n", pUsbIns->iInstance));
1203	RTCritSectEnter(&pThis->CritSect);
1204
1205	int rc = usbHidResetWorker(pThis, NULL, false /fSetConfig/);
1206
1207	RTCritSectLeave(&pThis->CritSect);
1208	return rc;
1209	}
1210
1211
1212	/**
1213	* @copydoc PDMUSBREG::pfnDestruct
1214	*/
1215	static void usbHidDestruct(PPDMUSBINS pUsbIns)
1216	{
1217	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1218	LogFlow(("usbHidDestruct/#%u:\n", pUsbIns->iInstance));
1219
1220	if (RTCritSectIsInitialized(&pThis->CritSect))
1221	{
1222	/* Let whoever runs in this critical section complete. */
1223	RTCritSectEnter(&pThis->CritSect);
1224	RTCritSectLeave(&pThis->CritSect);
1225	RTCritSectDelete(&pThis->CritSect);
1226	}
1227
1228	if (pThis->hEvtDoneQueue != NIL_RTSEMEVENT)
1229	{
1230	RTSemEventDestroy(pThis->hEvtDoneQueue);
1231	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1232	}
1233	}
1234
1235
1236	/**
1237	* @copydoc PDMUSBREG::pfnConstruct
1238	*/
1239	static DECLCALLBACK(int) usbHidConstruct(PPDMUSBINS pUsbIns, int iInstance, PCFGMNODE pCfg, PCFGMNODE pCfgGlobal)
1240	{
1241	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1242	Log(("usbHidConstruct/#%u:\n", iInstance));
1243
1244	/*
1245	* Perform the basic structure initialization first so the destructor
1246	* will not misbehave.
1247	*/
1248	pThis->pUsbIns = pUsbIns;
1249	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1250	usbHidQueueInit(&pThis->ToHostQueue);
1251	usbHidQueueInit(&pThis->DoneQueue);
1252
1253	int rc = RTCritSectInit(&pThis->CritSect);
1254	AssertRCReturn(rc, rc);
1255
1256	rc = RTSemEventCreate(&pThis->hEvtDoneQueue);
1257	AssertRCReturn(rc, rc);
1258
1259	/*
1260	* Validate and read the configuration.
1261	*/
1262	rc = CFGMR3ValidateConfig(pCfg, "/", "", "", "UsbHid", iInstance);
1263	if (RT_FAILURE(rc))
1264	return rc;
1265
1266	pThis->Lun0.IBase.pfnQueryInterface = usbHidKeyboardQueryInterface;
1267	pThis->Lun0.IPort.pfnPutEventHid = usbHidKeyboardPutEvent;
1268
1269	/*
1270	* Attach the keyboard driver.
1271	*/
1272	rc = PDMUsbHlpDriverAttach(pUsbIns, 0 /iLun/, &pThis->Lun0.IBase, &pThis->Lun0.pDrvBase, "Keyboard Port");
1273	if (RT_FAILURE(rc))
1274	return PDMUsbHlpVMSetError(pUsbIns, rc, RT_SRC_POS, N_("HID failed to attach keyboard driver"));
1275
1276	pThis->Lun0.pDrv = PDMIBASE_QUERY_INTERFACE(pThis->Lun0.pDrvBase, PDMIKEYBOARDCONNECTOR);
1277	if (!pThis->Lun0.pDrv)
1278	return PDMUsbHlpVMSetError(pUsbIns, VERR_PDM_MISSING_INTERFACE, RT_SRC_POS, N_("HID failed to query keyboard interface"));
1279
1280	return VINF_SUCCESS;
1281	}
1282
1283
1284	/**
1285	* The USB Human Interface Device (HID) Keyboard registration record.
1286	*/
1287	const PDMUSBREG g_UsbHidKbd =
1288	{
1289	/* u32Version */
1290	PDM_USBREG_VERSION,
1291	/* szName */
1292	"HidKeyboard",
1293	/* pszDescription */
1294	"USB HID Keyboard.",
1295	/* fFlags */
1296	0,
1297	/* cMaxInstances */
1298	~0U,
1299	/* cbInstance */
1300	sizeof(USBHID),
1301	/* pfnConstruct */
1302	usbHidConstruct,
1303	/* pfnDestruct */
1304	usbHidDestruct,
1305	/* pfnVMInitComplete */
1306	NULL,
1307	/* pfnVMPowerOn */
1308	NULL,
1309	/* pfnVMReset */
1310	NULL,
1311	/* pfnVMSuspend */
1312	NULL,
1313	/* pfnVMResume */
1314	NULL,
1315	/* pfnVMPowerOff */
1316	NULL,
1317	/* pfnHotPlugged */
1318	NULL,
1319	/* pfnHotUnplugged */
1320	NULL,
1321	/* pfnDriverAttach */
1322	NULL,
1323	/* pfnDriverDetach */
1324	NULL,
1325	/* pfnQueryInterface */
1326	NULL,
1327	/* pfnUsbReset */
1328	usbHidUsbReset,
1329	/* pfnUsbGetDescriptorCache */
1330	usbHidUsbGetDescriptorCache,
1331	/* pfnUsbSetConfiguration */
1332	usbHidUsbSetConfiguration,
1333	/* pfnUsbSetInterface */
1334	usbHidUsbSetInterface,
1335	/* pfnUsbClearHaltedEndpoint */
1336	usbHidUsbClearHaltedEndpoint,
1337	/* pfnUrbNew */
1338	NULL/usbHidUrbNew/,
1339	/* pfnUrbQueue */
1340	usbHidQueue,
1341	/* pfnUrbCancel */
1342	usbHidUrbCancel,
1343	/* pfnUrbReap */
1344	usbHidUrbReap,
1345	/* pfnWakeup */
1346	usbHidWakeup,
1347	/* u32TheEnd */
1348	PDM_USBREG_VERSION
1349	};

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Devices/Input/UsbKbd.cpp@ 54030

Download in other formats: