UsbKbd.cpp@ 47631

Last change on this file since 47631 was 47316, checked in by vboxsync, 11 years ago
UsbKbd: Do not drop SysReq.
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1	/* $Id: UsbKbd.cpp 47316 2013-07-22 16:24:35Z 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	/*******************************************************************************
19	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_USB_KBD
22	#include <VBox/vmm/pdmusb.h>
23	#include <VBox/log.h>
24	#include <VBox/err.h>
25	#include <iprt/assert.h>
26	#include <iprt/critsect.h>
27	#include <iprt/mem.h>
28	#include <iprt/semaphore.h>
29	#include <iprt/string.h>
30	#include <iprt/uuid.h>
31	#include "VBoxDD.h"
32
33
34	/*******************************************************************************
35	* Defined Constants And Macros *
36	*******************************************************************************/
37	/** @name USB HID string IDs
38	* @{ */
39	#define USBHID_STR_ID_MANUFACTURER 1
40	#define USBHID_STR_ID_PRODUCT 2
41	/** @} */
42
43	/** @name USB HID specific descriptor types
44	* @{ */
45	#define DT_IF_HID_DESCRIPTOR 0x21
46	#define DT_IF_HID_REPORT 0x22
47	/** @} */
48
49	/** @name USB HID vendor and product IDs
50	* @{ */
51	#define VBOX_USB_VENDOR 0x80EE
52	#define USBHID_PID_KEYBOARD 0x0010
53	/** @} */
54
55	/** @name USB HID class specific requests
56	* @{ */
57	#define HID_REQ_GET_REPORT 0x01
58	#define HID_REQ_GET_IDLE 0x02
59	#define HID_REQ_SET_REPORT 0x09
60	#define HID_REQ_SET_IDLE 0x0A
61	/** @} */
62
63	/** @name USB HID additional constants
64	* @{ */
65	/** The highest USB usage code reported by the VBox emulated keyboard */
66	#define VBOX_USB_MAX_USAGE_CODE 0xE7
67	/** The size of an array needed to store all USB usage codes */
68	#define VBOX_USB_USAGE_ARRAY_SIZE (VBOX_USB_MAX_USAGE_CODE + 1)
69	#define USBHID_USAGE_ROLL_OVER 1
70	/** The usage code of the first modifier key. */
71	#define USBHID_MODIFIER_FIRST 0xE0
72	/** The usage code of the last modifier key. */
73	#define USBHID_MODIFIER_LAST 0xE7
74	/** @} */
75
76	/*******************************************************************************
77	* Structures and Typedefs *
78	*******************************************************************************/
79
80	/**
81	* The USB HID request state.
82	*/
83	typedef enum USBHIDREQSTATE
84	{
85	/** Invalid status. */
86	USBHIDREQSTATE_INVALID = 0,
87	/** Ready to receive a new read request. */
88	USBHIDREQSTATE_READY,
89	/** Have (more) data for the host. */
90	USBHIDREQSTATE_DATA_TO_HOST,
91	/** Waiting to supply status information to the host. */
92	USBHIDREQSTATE_STATUS,
93	/** The end of the valid states. */
94	USBHIDREQSTATE_END
95	} USBHIDREQSTATE;
96
97
98	/**
99	* Endpoint status data.
100	*/
101	typedef struct USBHIDEP
102	{
103	bool fHalted;
104	} USBHIDEP;
105	/** Pointer to the endpoint status. */
106	typedef USBHIDEP *PUSBHIDEP;
107
108
109	/**
110	* A URB queue.
111	*/
112	typedef struct USBHIDURBQUEUE
113	{
114	/** The head pointer. */
115	PVUSBURB pHead;
116	/** Where to insert the next entry. */
117	PVUSBURB *ppTail;
118	} USBHIDURBQUEUE;
119	/** Pointer to a URB queue. */
120	typedef USBHIDURBQUEUE *PUSBHIDURBQUEUE;
121	/** Pointer to a const URB queue. */
122	typedef USBHIDURBQUEUE const *PCUSBHIDURBQUEUE;
123
124
125	/**
126	* The USB HID report structure for regular keys.
127	*/
128	typedef struct USBHIDK_REPORT
129	{
130	uint8_t ShiftState; /*< Modifier keys bitfield /
131	uint8_t Reserved; /*< Currently unused /
132	uint8_t aKeys[6]; /*< Normal keys /
133	} USBHIDK_REPORT, *PUSBHIDK_REPORT;
134
135	/** Scancode translator state. */
136	typedef enum {
137	SS_IDLE, /*< Starting state. /
138	SS_EXT, /*< E0 byte was received. /
139	SS_EXT1 /*< E1 byte was received. /
140	} scan_state_t;
141
142	/**
143	* The USB HID instance data.
144	*/
145	typedef struct USBHID
146	{
147	/** Pointer back to the PDM USB Device instance structure. */
148	PPDMUSBINS pUsbIns;
149	/** Critical section protecting the device state. */
150	RTCRITSECT CritSect;
151
152	/** The current configuration.
153	* (0 - default, 1 - the one supported configuration, i.e configured.) */
154	uint8_t bConfigurationValue;
155	/** USB HID Idle value..
156	* (0 - only report state change, !=0 - report in bIdle * 4ms intervals.) */
157	uint8_t bIdle;
158	/** Endpoint 0 is the default control pipe, 1 is the dev->host interrupt one. */
159	USBHIDEP aEps[2];
160	/** The state of the HID (state machine).*/
161	USBHIDREQSTATE enmState;
162
163	/** State of the scancode translation. */
164	scan_state_t XlatState;
165
166	/** Pending to-host queue.
167	* The URBs waiting here are waiting for data to become available.
168	*/
169	USBHIDURBQUEUE ToHostQueue;
170
171	/** Done queue
172	* The URBs stashed here are waiting to be reaped. */
173	USBHIDURBQUEUE DoneQueue;
174	/** Signalled when adding an URB to the done queue and fHaveDoneQueueWaiter
175	* is set. */
176	RTSEMEVENT hEvtDoneQueue;
177	/** Someone is waiting on the done queue. */
178	bool fHaveDoneQueueWaiter;
179	/** If device has pending changes. */
180	bool fHasPendingChanges;
181	/** Keypresses which have not yet been reported. A workaround for the
182	* problem of keys being released before the keypress could be reported. */
183	uint8_t abUnreportedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
184	/** Currently depressed keys */
185	uint8_t abDepressedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
186
187	/**
188	* Keyboard port - LUN#0.
189	*
190	* @implements PDMIBASE
191	* @implements PDMIKEYBOARDPORT
192	*/
193	struct
194	{
195	/** The base interface for the keyboard port. */
196	PDMIBASE IBase;
197	/** The keyboard port base interface. */
198	PDMIKEYBOARDPORT IPort;
199
200	/** The base interface of the attached keyboard driver. */
201	R3PTRTYPE(PPDMIBASE) pDrvBase;
202	/** The keyboard interface of the attached keyboard driver. */
203	R3PTRTYPE(PPDMIKEYBOARDCONNECTOR) pDrv;
204	} Lun0;
205	} USBHID;
206	/** Pointer to the USB HID instance data. */
207	typedef USBHID *PUSBHID;
208
209	/*******************************************************************************
210	* Global Variables *
211	*******************************************************************************/
212	static const PDMUSBDESCCACHESTRING g_aUsbHidStrings_en_US[] =
213	{
214	{ USBHID_STR_ID_MANUFACTURER, "VirtualBox" },
215	{ USBHID_STR_ID_PRODUCT, "USB Keyboard" },
216	};
217
218	static const PDMUSBDESCCACHELANG g_aUsbHidLanguages[] =
219	{
220	{ 0x0409, RT_ELEMENTS(g_aUsbHidStrings_en_US), g_aUsbHidStrings_en_US }
221	};
222
223	static const VUSBDESCENDPOINTEX g_aUsbHidEndpointDescs[] =
224	{
225	{
226	{
227	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
228	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
229	/* .bEndpointAddress = / 0x81 / ep=1, in */,
230	/* .bmAttributes = / 3 / interrupt */,
231	/* .wMaxPacketSize = */ 8,
232	/* .bInterval = */ 10,
233	},
234	/* .pvMore = */ NULL,
235	/* .pvClass = */ NULL,
236	/* .cbClass = */ 0
237	},
238	};
239
240	/** HID report descriptor. */
241	static const uint8_t g_UsbHidReportDesc[] =
242	{
243	/* Usage Page / 0x05, 0x01, / Generic Desktop */
244	/* Usage / 0x09, 0x06, / Keyboard */
245	/* Collection / 0xA1, 0x01, / Application */
246	/* Usage Page / 0x05, 0x07, / Keyboard */
247	/* Usage Minimum / 0x19, 0xE0, / Left Ctrl Key */
248	/* Usage Maximum / 0x29, 0xE7, / Right GUI Key */
249	/* Logical Minimum / 0x15, 0x00, / 0 */
250	/* Logical Maximum / 0x25, 0x01, / 1 */
251	/* Report Count / 0x95, 0x08, / 8 */
252	/* Report Size / 0x75, 0x01, / 1 */
253	/* Input / 0x81, 0x02, / Data, Value, Absolute, Bit field */
254	/* Report Count / 0x95, 0x01, / 1 */
255	/* Report Size / 0x75, 0x08, / 8 (padding bits) */
256	/* Input / 0x81, 0x01, / Constant, Array, Absolute, Bit field */
257	/* Report Count / 0x95, 0x05, / 5 */
258	/* Report Size / 0x75, 0x01, / 1 */
259	/* Usage Page / 0x05, 0x08, / LEDs */
260	/* Usage Minimum / 0x19, 0x01, / Num Lock */
261	/* Usage Maximum / 0x29, 0x05, / Kana */
262	/* Output / 0x91, 0x02, / Data, Value, Absolute, Non-volatile,Bit field */
263	/* Report Count / 0x95, 0x01, / 1 */
264	/* Report Size / 0x75, 0x03, / 3 */
265	/* Output / 0x91, 0x01, / Constant, Value, Absolute, Non-volatile, Bit field */
266	/* Report Count / 0x95, 0x06, / 6 */
267	/* Report Size / 0x75, 0x08, / 8 */
268	/* Logical Minimum / 0x15, 0x00, / 0 */
269	/* Logical Maximum / 0x26, 0xFF,0x00,/ 255 */
270	/* Usage Page / 0x05, 0x07, / Keyboard */
271	/* Usage Minimum / 0x19, 0x00, / 0 */
272	/* Usage Maximum / 0x29, 0xFF, / 255 */
273	/* Input / 0x81, 0x00, / Data, Array, Absolute, Bit field */
274	/* End Collection */ 0xC0,
275	};
276
277	/** Additional HID class interface descriptor. */
278	static const uint8_t g_UsbHidIfHidDesc[] =
279	{
280	/* .bLength = */ 0x09,
281	/* .bDescriptorType = / 0x21, / HID */
282	/* .bcdHID = / 0x10, 0x01, / 1.1 */
283	/* .bCountryCode = / 0x0D, / International (ISO) */
284	/* .bNumDescriptors = */ 1,
285	/* .bDescriptorType = / 0x22, / Report */
286	/* .wDescriptorLength = */ sizeof(g_UsbHidReportDesc), 0x00
287	};
288
289	static const VUSBDESCINTERFACEEX g_UsbHidInterfaceDesc =
290	{
291	{
292	/* .bLength = */ sizeof(VUSBDESCINTERFACE),
293	/* .bDescriptorType = */ VUSB_DT_INTERFACE,
294	/* .bInterfaceNumber = */ 0,
295	/* .bAlternateSetting = */ 0,
296	/* .bNumEndpoints = */ 1,
297	/* .bInterfaceClass = / 3 / HID */,
298	/* .bInterfaceSubClass = / 1 / Boot Interface */,
299	/* .bInterfaceProtocol = / 1 / Keyboard */,
300	/* .iInterface = */ 0
301	},
302	/* .pvMore = */ NULL,
303	/* .pvClass = */ &g_UsbHidIfHidDesc,
304	/* .cbClass = */ sizeof(g_UsbHidIfHidDesc),
305	&g_aUsbHidEndpointDescs[0],
306	/* .pIAD = */ NULL,
307	/* .cbIAD = */ 0
308	};
309
310	static const VUSBINTERFACE g_aUsbHidInterfaces[] =
311	{
312	{ &g_UsbHidInterfaceDesc, /* .cSettings = */ 1 },
313	};
314
315	static const VUSBDESCCONFIGEX g_UsbHidConfigDesc =
316	{
317	{
318	/* .bLength = */ sizeof(VUSBDESCCONFIG),
319	/* .bDescriptorType = */ VUSB_DT_CONFIG,
320	/* .wTotalLength = / 0 / recalculated on read */,
321	/* .bNumInterfaces = */ RT_ELEMENTS(g_aUsbHidInterfaces),
322	/* .bConfigurationValue =*/ 1,
323	/* .iConfiguration = */ 0,
324	/* .bmAttributes = */ RT_BIT(7),
325	/* .MaxPower = / 50 / 100mA */
326	},
327	NULL, /* pvMore */
328	&g_aUsbHidInterfaces[0],
329	NULL /* pvOriginal */
330	};
331
332	static const VUSBDESCDEVICE g_UsbHidDeviceDesc =
333	{
334	/* .bLength = */ sizeof(g_UsbHidDeviceDesc),
335	/* .bDescriptorType = */ VUSB_DT_DEVICE,
336	/* .bcdUsb = / 0x110, / 1.1 */
337	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
338	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
339	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
340	/* .bMaxPacketSize0 = */ 8,
341	/* .idVendor = */ VBOX_USB_VENDOR,
342	/* .idProduct = */ USBHID_PID_KEYBOARD,
343	/* .bcdDevice = / 0x0100, / 1.0 */
344	/* .iManufacturer = */ USBHID_STR_ID_MANUFACTURER,
345	/* .iProduct = */ USBHID_STR_ID_PRODUCT,
346	/* .iSerialNumber = */ 0,
347	/* .bNumConfigurations = */ 1
348	};
349
350	static const PDMUSBDESCCACHE g_UsbHidDescCache =
351	{
352	/* .pDevice = */ &g_UsbHidDeviceDesc,
353	/* .paConfigs = */ &g_UsbHidConfigDesc,
354	/* .paLanguages = */ g_aUsbHidLanguages,
355	/* .cLanguages = */ RT_ELEMENTS(g_aUsbHidLanguages),
356	/* .fUseCachedDescriptors = */ true,
357	/* .fUseCachedStringsDescriptors = */ true
358	};
359
360
361	/*
362	* Because of historical reasons and poor design, VirtualBox internally uses BIOS
363	* PC/XT style scan codes to represent keyboard events. Each key press and release is
364	* represented as a stream of bytes, typically only one byte but up to four-byte
365	* sequences are possible. In the typical case, the GUI front end generates the stream
366	* of scan codes which we need to translate back to a single up/down event.
367	*
368	* This function could possibly live somewhere else.
369	*/
370
371	/** Lookup table for converting PC/XT scan codes to USB HID usage codes. */
372	/** We map the scan codes for F13 to F23 to the usage codes for Sun keyboard
373	* left-hand side function keys rather than to the standard F13 to F23 usage
374	* codes, since we suspect that there are more people wanting Sun keyboard
375	* emulation than emulation of other keyboards with extended function keys. */
376	static uint8_t aScancode2Hid[] =
377	{
378	0x00, 0x29, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, /* 00-07 */
379	0x24, 0x25, 0x26, 0x27, 0x2d, 0x2e, 0x2a, 0x2b, /* 08-1F */
380	0x14, 0x1a, 0x08, 0x15, 0x17, 0x1c, 0x18, 0x0c, /* 10-17 */
381	0x12, 0x13, 0x2f, 0x30, 0x28, 0xe0, 0x04, 0x16, /* 18-1F */
382	0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x0f, 0x33, /* 20-27 */
383	0x34, 0x35, 0xe1, 0x31, 0x1d, 0x1b, 0x06, 0x19, /* 28-2F */
384	0x05, 0x11, 0x10, 0x36, 0x37, 0x38, 0xe5, 0x55, /* 30-37 */
385	0xe2, 0x2c, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, /* 38-3F */
386	0x3f, 0x40, 0x41, 0x42, 0x43, 0x53, 0x47, 0x5f, /* 40-47 */
387	0x60, 0x61, 0x56, 0x5c, 0x5d, 0x5e, 0x57, 0x59, /* 48-4F */
388	0x5a, 0x5b, 0x62, 0x63, 0x46, 0x00, 0x64, 0x44, /* 50-57 */
389	0x45, 0x67, 0x00, 0x00, 0x8c, 0x00, 0x00, 0x00, /* 58-5F */
390	/* Sun keys: Props Undo Front Copy */
391	0x00, 0x00, 0x00, 0x00, 0x76, 0x7a, 0x77, 0x7c, /* 60-67 */
392	/* Open Paste Find Cut Stop Again Help */
393	0x74, 0x7d, 0x7e, 0x7b, 0x78, 0x79, 0x75, 0x00, /* 68-6F */
394	0x88, 0x91, 0x90, 0x87, 0x00, 0x00, 0x00, 0x00, /* 70-77 */
395	0x00, 0x8a, 0x00, 0x8b, 0x00, 0x89, 0x85, 0x00 /* 78-7F */
396	};
397
398	/** Lookup table for extended scancodes (arrow keys etc.). */
399	static uint8_t aExtScan2Hid[] =
400	{
401	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00-07 */
402	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 08-1F */
403	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10-17 */
404	0x00, 0x00, 0x00, 0x00, 0x58, 0xe4, 0x00, 0x00, /* 18-1F */
405	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 20-27 */
406	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 28-2F */
407	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x00, 0x46, /* 30-37 */
408	0xe6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 38-3F */
409	0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x4a, /* 40-47 */
410	0x52, 0x4b, 0x00, 0x50, 0x00, 0x4f, 0x00, 0x4d, /* 48-4F */
411	0x51, 0x4e, 0x49, 0x4c, 0x00, 0x00, 0x00, 0x00, /* 50-57 */
412	0x00, 0x00, 0x00, 0xe3, 0xe7, 0x65, 0x66, 0x00, /* 58-5F */
413	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60-67 */
414	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 68-6F */
415	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70-77 */
416	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* 78-7F */
417	};
418
419	/**
420	* Convert a PC scan code to a USB HID usage byte.
421	*
422	* @param state Current state of the translator (scan_state_t).
423	* @param scanCode Incoming scan code.
424	* @param pUsage Pointer to usage; high bit set for key up events. The
425	* contents are only valid if returned state is SS_IDLE.
426	*
427	* @return scan_state_t New state of the translator.
428	*/
429	static scan_state_t ScancodeToHidUsage(scan_state_t state, uint8_t scanCode, uint32_t *pUsage)
430	{
431	uint32_t keyUp;
432	uint8_t usage;
433
434	Assert(pUsage);
435
436	/* Isolate the scan code and key break flag. */
437	keyUp = (scanCode & 0x80) << 24;
438
439	switch (state) {
440	case SS_IDLE:
441	if (scanCode == 0xE0) {
442	state = SS_EXT;
443	} else if (scanCode == 0xE1) {
444	state = SS_EXT1;
445	} else {
446	usage = aScancode2Hid[scanCode & 0x7F];
447	*pUsage = usage \| keyUp;
448	/* Remain in SS_IDLE state. */
449	}
450	break;
451	case SS_EXT:
452	usage = aExtScan2Hid[scanCode & 0x7F];
453	*pUsage = usage \| keyUp;
454	state = SS_IDLE;
455	break;
456	case SS_EXT1:
457	Assert(0); //@todo - sort out the Pause key
458	*pUsage = 0;
459	state = SS_IDLE;
460	break;
461	}
462	return state;
463	}
464
465	/*******************************************************************************
466	* Internal Functions *
467	*******************************************************************************/
468
469
470	/**
471	* Initializes an URB queue.
472	*
473	* @param pQueue The URB queue.
474	*/
475	static void usbHidQueueInit(PUSBHIDURBQUEUE pQueue)
476	{
477	pQueue->pHead = NULL;
478	pQueue->ppTail = &pQueue->pHead;
479	}
480
481	/**
482	* Inserts an URB at the end of the queue.
483	*
484	* @param pQueue The URB queue.
485	* @param pUrb The URB to insert.
486	*/
487	DECLINLINE(void) usbHidQueueAddTail(PUSBHIDURBQUEUE pQueue, PVUSBURB pUrb)
488	{
489	pUrb->Dev.pNext = NULL;
490	*pQueue->ppTail = pUrb;
491	pQueue->ppTail = &pUrb->Dev.pNext;
492	}
493
494
495	/**
496	* Unlinks the head of the queue and returns it.
497	*
498	* @returns The head entry.
499	* @param pQueue The URB queue.
500	*/
501	DECLINLINE(PVUSBURB) usbHidQueueRemoveHead(PUSBHIDURBQUEUE pQueue)
502	{
503	PVUSBURB pUrb = pQueue->pHead;
504	if (pUrb)
505	{
506	PVUSBURB pNext = pUrb->Dev.pNext;
507	pQueue->pHead = pNext;
508	if (!pNext)
509	pQueue->ppTail = &pQueue->pHead;
510	else
511	pUrb->Dev.pNext = NULL;
512	}
513	return pUrb;
514	}
515
516
517	/**
518	* Removes an URB from anywhere in the queue.
519	*
520	* @returns true if found, false if not.
521	* @param pQueue The URB queue.
522	* @param pUrb The URB to remove.
523	*/
524	DECLINLINE(bool) usbHidQueueRemove(PUSBHIDURBQUEUE pQueue, PVUSBURB pUrb)
525	{
526	PVUSBURB pCur = pQueue->pHead;
527	if (pCur == pUrb)
528	pQueue->pHead = pUrb->Dev.pNext;
529	else
530	{
531	while (pCur)
532	{
533	if (pCur->Dev.pNext == pUrb)
534	{
535	pCur->Dev.pNext = pUrb->Dev.pNext;
536	break;
537	}
538	pCur = pCur->Dev.pNext;
539	}
540	if (!pCur)
541	return false;
542	}
543	if (!pUrb->Dev.pNext)
544	pQueue->ppTail = &pQueue->pHead;
545	return true;
546	}
547
548
549	/**
550	* Checks if the queue is empty or not.
551	*
552	* @returns true if it is, false if it isn't.
553	* @param pQueue The URB queue.
554	*/
555	DECLINLINE(bool) usbHidQueueIsEmpty(PCUSBHIDURBQUEUE pQueue)
556	{
557	return pQueue->pHead == NULL;
558	}
559
560
561	/**
562	* Links an URB into the done queue.
563	*
564	* @param pThis The HID instance.
565	* @param pUrb The URB.
566	*/
567	static void usbHidLinkDone(PUSBHID pThis, PVUSBURB pUrb)
568	{
569	usbHidQueueAddTail(&pThis->DoneQueue, pUrb);
570
571	if (pThis->fHaveDoneQueueWaiter)
572	{
573	int rc = RTSemEventSignal(pThis->hEvtDoneQueue);
574	AssertRC(rc);
575	}
576	}
577
578
579
580	/**
581	* Completes the URB with a stalled state, halting the pipe.
582	*/
583	static int usbHidCompleteStall(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb, const char *pszWhy)
584	{
585	Log(("usbHidCompleteStall/#%u: pUrb=%p:%s: %s\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, pszWhy));
586
587	pUrb->enmStatus = VUSBSTATUS_STALL;
588
589	/** @todo figure out if the stall is global or pipe-specific or both. */
590	if (pEp)
591	pEp->fHalted = true;
592	else
593	{
594	pThis->aEps[0].fHalted = true;
595	pThis->aEps[1].fHalted = true;
596	}
597
598	usbHidLinkDone(pThis, pUrb);
599	return VINF_SUCCESS;
600	}
601
602
603	/**
604	* Completes the URB with a OK state.
605	*/
606	static int usbHidCompleteOk(PUSBHID pThis, PVUSBURB pUrb, size_t cbData)
607	{
608	Log(("usbHidCompleteOk/#%u: pUrb=%p:%s cbData=%#zx\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, cbData));
609
610	pUrb->enmStatus = VUSBSTATUS_OK;
611	pUrb->cbData = (uint32_t)cbData;
612
613	usbHidLinkDone(pThis, pUrb);
614	return VINF_SUCCESS;
615	}
616
617
618	/**
619	* Reset worker for usbHidUsbReset, usbHidUsbSetConfiguration and
620	* usbHidHandleDefaultPipe.
621	*
622	* @returns VBox status code.
623	* @param pThis The HID instance.
624	* @param pUrb Set when usbHidHandleDefaultPipe is the
625	* caller.
626	* @param fSetConfig Set when usbHidUsbSetConfiguration is the
627	* caller.
628	*/
629	static int usbHidResetWorker(PUSBHID pThis, PVUSBURB pUrb, bool fSetConfig)
630	{
631	/*
632	* Deactivate the keyboard.
633	*/
634	pThis->Lun0.pDrv->pfnSetActive(pThis->Lun0.pDrv, false);
635
636	/*
637	* Reset the device state.
638	*/
639	pThis->enmState = USBHIDREQSTATE_READY;
640	pThis->bIdle = 0;
641	pThis->fHasPendingChanges = false;
642
643	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aEps); i++)
644	pThis->aEps[i].fHalted = false;
645
646	if (!pUrb && !fSetConfig) /* (only device reset) */
647	pThis->bConfigurationValue = 0; /* default */
648
649	/*
650	* Ditch all pending URBs.
651	*/
652	PVUSBURB pCurUrb;
653	while ((pCurUrb = usbHidQueueRemoveHead(&pThis->ToHostQueue)) != NULL)
654	{
655	pCurUrb->enmStatus = VUSBSTATUS_CRC;
656	usbHidLinkDone(pThis, pCurUrb);
657	}
658
659	if (pUrb)
660	return usbHidCompleteOk(pThis, pUrb, 0);
661	return VINF_SUCCESS;
662	}
663
664	#ifdef DEBUG
665	# define HEX_DIGIT(x) (((x) < 0xa) ? ((x) + '0') : ((x) - 0xa + 'a'))
666	static void usbHidComputePressed(PUSBHIDK_REPORT pReport, char* pszBuf, unsigned cbBuf)
667	{
668	unsigned offBuf = 0;
669	unsigned i;
670	for (i = 0; i < RT_ELEMENTS(pReport->aKeys); ++i)
671	{
672	uint8_t uCode = pReport->aKeys[i];
673	if (uCode != 0)
674	{
675	if (offBuf + 4 >= cbBuf)
676	break;
677	pszBuf[offBuf++] = HEX_DIGIT(uCode >> 4);
678	pszBuf[offBuf++] = HEX_DIGIT(uCode & 0xf);
679	pszBuf[offBuf++] = ' ';
680	}
681	}
682	pszBuf[offBuf++] = '\0';
683	}
684	# undef HEX_DIGIT
685	#endif
686
687	/**
688	* Returns true if the usage code corresponds to a keyboard modifier key
689	* (left or right ctrl, shift, alt or GUI). The usage codes for these keys
690	* are the range 0xe0 to 0xe7.
691	*/
692	static bool usbHidUsageCodeIsModifier(uint8_t u8Usage)
693	{
694	return u8Usage >= USBHID_MODIFIER_FIRST && u8Usage <= USBHID_MODIFIER_LAST;
695	}
696
697	/**
698	* Convert a USB HID usage code to a keyboard modifier flag. The arithmetic
699	* is simple: the modifier keys have usage codes from 0xe0 to 0xe7, and the
700	* lower nibble is the bit number of the flag.
701	*/
702	static uint8_t usbHidModifierToFlag(uint8_t u8Usage)
703	{
704	Assert(usbHidUsageCodeIsModifier(u8Usage));
705	return RT_BIT(u8Usage & 0xf);
706	}
707
708	/**
709	* Create a USB HID keyboard report based on a vector of keys which have been
710	* pressed since the last report was created (so that we don't miss keys that
711	* are only pressed briefly) and a vector of currently depressed keys.
712	* The keys in the report aKeys array are in increasing order (important for
713	* the test case).
714	*/
715	static int usbHidFillReport(PUSBHIDK_REPORT pReport,
716	uint8_t *pabUnreportedKeys,
717	uint8_t *pabDepressedKeys)
718	{
719	int rc = false;
720	unsigned iBuf = 0;
721	RT_ZERO(*pReport);
722	for (unsigned iKey = 0; iKey < VBOX_USB_USAGE_ARRAY_SIZE; ++iKey)
723	{
724	AssertReturn(iBuf <= RT_ELEMENTS(pReport->aKeys),
725	VERR_INTERNAL_ERROR);
726	if (pabUnreportedKeys[iKey] \|\| pabDepressedKeys[iKey])
727	{
728	if (usbHidUsageCodeIsModifier(iKey))
729	pReport->ShiftState \|= usbHidModifierToFlag(iKey);
730	else if (iBuf == RT_ELEMENTS(pReport->aKeys))
731	{
732	/* The USB HID spec says that the entire vector should be
733	* set to ErrorRollOver on overflow. We don't mind if this
734	* path is taken several times for one report. */
735	for (unsigned iBuf2 = 0;
736	iBuf2 < RT_ELEMENTS(pReport->aKeys); ++iBuf2)
737	pReport->aKeys[iBuf2] = USBHID_USAGE_ROLL_OVER;
738	}
739	else
740	{
741	pReport->aKeys[iBuf] = iKey;
742	++iBuf;
743	/* More Korean keyboard hackery: Give the caller a hint that
744	* a key release event needs reporting.
745	*/
746	if (iKey == 0x90 \|\| iKey == 0x91)
747	rc = true;
748	}
749	/* Avoid "hanging" keys: If a key is unreported but no longer
750	* depressed, we'll need to report the key-up state, too.
751	*/
752	if (pabUnreportedKeys[iKey] && !pabDepressedKeys[iKey])
753	rc = true;
754
755	pabUnreportedKeys[iKey] = 0;
756	}
757	}
758	return rc;
759	}
760
761	#ifdef DEBUG
762	/** Test data for testing usbHidFillReport(). The format is:
763	* - Unreported keys (zero terminated array)
764	* - Depressed keys (zero terminated array)
765	* - Expected shift state in the report (single byte inside array)
766	* - Expected keys buffer contents (array of six bytes)
767	*/
768	static const uint8_t testUsbHidFillReportData[][4][10] = {
769	/* Just unreported, no modifiers */
770	{{4, 9, 0}, {0}, {0}, {4, 9, 0, 0, 0, 0}},
771	/* Just unreported, one modifier */
772	{{4, 9, 0xe2, 0}, {0}, {4}, {4, 9, 0, 0, 0, 0}},
773	/* Just unreported, two modifiers */
774	{{4, 9, 0xe2, 0xe4, 0}, {0}, {20}, {4, 9, 0, 0, 0, 0}},
775	/* Just depressed, no modifiers */
776	{{0}, {7, 20, 0}, {0}, {7, 20, 0, 0, 0, 0}},
777	/* Just depressed, one modifier */
778	{{0}, {7, 20, 0xe3, 0}, {8}, {7, 20, 0, 0, 0, 0}},
779	/* Just depressed, two modifiers */
780	{{0}, {7, 20, 0xe3, 0xe6, 0}, {72}, {7, 20, 0, 0, 0, 0}},
781	/* Unreported and depressed, no overlap, no modifiers */
782	{{5, 10, 0}, {8, 21, 0}, {0}, {5, 8, 10, 21, 0, 0}},
783	/* Unreported and depressed, one overlap, no modifiers */
784	{{5, 10, 0}, {8, 10, 21, 0}, {0}, {5, 8, 10, 21, 0, 0}},
785	/* Unreported and depressed, no overlap, non-overlapping modifiers */
786	{{5, 10, 0xe2, 0xe4, 0}, {8, 21, 0xe3, 0xe6, 0}, {92},
787	{5, 8, 10, 21, 0, 0}},
788	/* Unreported and depressed, one overlap, non-overlapping modifiers */
789	{{5, 10, 21, 0xe2, 0xe4, 0}, {8, 21, 0xe3, 0xe6, 0}, {92},
790	{5, 8, 10, 21, 0, 0}},
791	/* Unreported and depressed, no overlap, overlapping modifiers */
792	{{5, 10, 0xe2, 0xe4, 0}, {8, 21, 0xe3, 0xe4, 0}, {28},
793	{5, 8, 10, 21, 0, 0}},
794	/* Unreported and depressed, one overlap, overlapping modifiers */
795	{{5, 10, 0xe2, 0xe4, 0}, {5, 8, 21, 0xe3, 0xe4, 0}, {28},
796	{5, 8, 10, 21, 0, 0}},
797	/* Just too many unreported, no modifiers */
798	{{4, 9, 11, 12, 16, 18, 20, 0}, {0}, {0}, {1, 1, 1, 1, 1, 1}},
799	/* Just too many unreported, two modifiers */
800	{{4, 9, 11, 12, 16, 18, 20, 0xe2, 0xe4, 0}, {0}, {20},
801	{1, 1, 1, 1, 1, 1}},
802	/* Just too many depressed, no modifiers */
803	{{0}, {7, 20, 22, 25, 27, 29, 34, 0}, {0}, {1, 1, 1, 1, 1, 1}},
804	/* Just too many depressed, two modifiers */
805	{{0}, {7, 20, 22, 25, 27, 29, 34, 0xe3, 0xe5, 0}, {40},
806	{1, 1, 1, 1, 1, 1}},
807	/* Too many unreported and depressed, no overlap, no modifiers */
808	{{5, 10, 12, 13, 0}, {8, 9, 21, 0}, {0}, {1, 1, 1, 1, 1, 1}},
809	/* Eight unreported and depressed total, one overlap, no modifiers */
810	{{5, 10, 12, 13, 0}, {8, 10, 21, 22, 0}, {0}, {1, 1, 1, 1, 1, 1}},
811	/* Seven unreported and depressed total, one overlap, no modifiers */
812	{{5, 10, 12, 13, 0}, {8, 10, 21, 0}, {0}, {5, 8, 10, 12, 13, 21}},
813	/* Too many unreported and depressed, no overlap, two modifiers */
814	{{5, 10, 12, 13, 0xe2, 0}, {8, 9, 21, 0xe4, 0}, {20},
815	{1, 1, 1, 1, 1, 1}},
816	/* Eight unreported and depressed total, one overlap, two modifiers */
817	{{5, 10, 12, 13, 0xe1, 0}, {8, 10, 21, 22, 0xe2, 0}, {6},
818	{1, 1, 1, 1, 1, 1}},
819	/* Seven unreported and depressed total, one overlap, two modifiers */
820	{{5, 10, 12, 13, 0xe2, 0}, {8, 10, 21, 0xe3, 0}, {12},
821	{5, 8, 10, 12, 13, 21}}
822	};
823
824	/** Test case for usbHidFillReport() */
825	class testUsbHidFillReport
826	{
827	USBHIDK_REPORT mReport;
828	uint8_t mabUnreportedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
829	uint8_t mabDepressedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
830	const uint8_t (*mTests)[4][10];
831
832	void doTest(unsigned cTest, const uint8_t *paiUnreportedKeys,
833	const uint8_t *paiDepressedKeys, uint8_t aExpShiftState,
834	const uint8_t *pabExpKeys)
835	{
836	RT_ZERO(mReport);
837	RT_ZERO(mabUnreportedKeys);
838	RT_ZERO(mabDepressedKeys);
839	for (unsigned i = 0; paiUnreportedKeys[i] != 0; ++i)
840	mabUnreportedKeys[paiUnreportedKeys[i]] = 1;
841	for (unsigned i = 0; paiDepressedKeys[i] != 0; ++i)
842	mabUnreportedKeys[paiDepressedKeys[i]] = 1;
843	int rc = usbHidFillReport(&mReport, mabUnreportedKeys, mabDepressedKeys);
844	AssertMsgRC(rc, ("test %u\n", cTest));
845	AssertMsg(mReport.ShiftState == aExpShiftState, ("test %u\n", cTest));
846	for (unsigned i = 0; i < RT_ELEMENTS(mReport.aKeys); ++i)
847	AssertMsg(mReport.aKeys[i] == pabExpKeys[i], ("test %u\n", cTest));
848	}
849
850	public:
851	testUsbHidFillReport(void) : mTests(&testUsbHidFillReportData[0])
852	{
853	for (unsigned i = 0; i < RT_ELEMENTS(testUsbHidFillReportData); ++i)
854	doTest(i, mTests[i][0], mTests[i][1], mTests[i][2][0],
855	mTests[i][3]);
856	}
857	};
858
859	static testUsbHidFillReport gsTestUsbHidFillReport;
860	#endif
861
862	/**
863	* Sends a state report to the host if there is a pending URB.
864	*/
865	static int usbHidSendReport(PUSBHID pThis)
866	{
867	PVUSBURB pUrb = usbHidQueueRemoveHead(&pThis->ToHostQueue);
868	if (pUrb)
869	{
870	PUSBHIDK_REPORT pReport = (PUSBHIDK_REPORT)&pUrb->abData[0];
871
872	int again = usbHidFillReport(pReport, pThis->abUnreportedKeys,
873	pThis->abDepressedKeys);
874	if (again)
875	pThis->fHasPendingChanges = true;
876	else
877	pThis->fHasPendingChanges = false;
878	return usbHidCompleteOk(pThis, pUrb, sizeof(*pReport));
879	}
880	else
881	{
882	Log2(("No available URB for USB kbd\n"));
883	pThis->fHasPendingChanges = true;
884	}
885	return VINF_EOF;
886	}
887
888	/**
889	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
890	*/
891	static DECLCALLBACK(void ) usbHidKeyboardQueryInterface(PPDMIBASE pInterface, const char pszIID)
892	{
893	PUSBHID pThis = RT_FROM_MEMBER(pInterface, USBHID, Lun0.IBase);
894	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->Lun0.IBase);
895	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIKEYBOARDPORT, &pThis->Lun0.IPort);
896	return NULL;
897	}
898
899	/**
900	* Keyboard event handler.
901	*
902	* @returns VBox status code.
903	* @param pInterface Pointer to the keyboard port interface (KBDState::Keyboard.IPort).
904	* @param u8KeyCode The keycode.
905	*/
906	static DECLCALLBACK(int) usbHidKeyboardPutEvent(PPDMIKEYBOARDPORT pInterface, uint8_t u8KeyCode)
907	{
908	PUSBHID pThis = RT_FROM_MEMBER(pInterface, USBHID, Lun0.IPort);
909	uint32_t u32Usage = 0;
910	uint8_t u8HidCode;
911	int fKeyDown;
912	bool fHaveEvent = true;
913
914	RTCritSectEnter(&pThis->CritSect);
915
916	pThis->XlatState = ScancodeToHidUsage(pThis->XlatState, u8KeyCode, &u32Usage);
917
918	if (pThis->XlatState == SS_IDLE)
919	{
920	/* The usage code is valid. */
921	fKeyDown = !(u32Usage & 0x80000000);
922	u8HidCode = u32Usage & 0xFF;
923	AssertReturn(u8HidCode <= VBOX_USB_MAX_USAGE_CODE, VERR_INTERNAL_ERROR);
924
925	LogFlowFunc(("key %s: 0x%x->0x%x\n",
926	fKeyDown ? "down" : "up", u8KeyCode, u8HidCode));
927
928	if (fKeyDown)
929	{
930	/* Due to host key repeat, we can get key events for keys which are
931	* already depressed. */
932	if (!pThis->abDepressedKeys[u8HidCode])
933	{
934	pThis->abUnreportedKeys[u8HidCode] = 1;
935
936	/* If a non-modifier key is being marked as unreported, also set
937	* all currently depressed modifer keys as unreported. This avoids
938	* problems where a simulated key sequence is sent too fast and
939	* by the time the key is reported, some previously reported
940	* modifiers are already released. This helps ensure that the guest
941	* sees the entire modifier(s)+key sequence in a single report.
942	*/
943	if (!usbHidUsageCodeIsModifier(u8HidCode))
944	{
945	int iModKey;
946
947	for (iModKey = USBHID_MODIFIER_FIRST; iModKey <= USBHID_MODIFIER_LAST; ++iModKey)
948	if (pThis->abDepressedKeys[iModKey])
949	pThis->abUnreportedKeys[iModKey] = 1;
950	}
951	}
952	else
953	fHaveEvent = false;
954	pThis->abDepressedKeys[u8HidCode] = 1;
955	}
956	else
957	{
958	/* For stupid Korean keyboards, we have to fake a key up/down sequence
959	* because they only send break codes for Hangul/Hanja keys.
960	*/
961	if (u8HidCode == 0x90 \|\| u8HidCode == 0x91)
962	pThis->abUnreportedKeys[u8HidCode] = 1;
963	pThis->abDepressedKeys[u8HidCode] = 0;
964	}
965
966
967	/* Send a report if the host is already waiting for it. */
968	if (fHaveEvent)
969	usbHidSendReport(pThis);
970	}
971
972	RTCritSectLeave(&pThis->CritSect);
973
974	return VINF_SUCCESS;
975	}
976
977	/**
978	* @copydoc PDMUSBREG::pfnUrbReap
979	*/
980	static DECLCALLBACK(PVUSBURB) usbHidUrbReap(PPDMUSBINS pUsbIns, RTMSINTERVAL cMillies)
981	{
982	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
983	//LogFlow(("usbHidUrbReap/#%u: cMillies=%u\n", pUsbIns->iInstance, cMillies));
984
985	RTCritSectEnter(&pThis->CritSect);
986
987	PVUSBURB pUrb = usbHidQueueRemoveHead(&pThis->DoneQueue);
988	if (!pUrb && cMillies)
989	{
990	/* Wait */
991	pThis->fHaveDoneQueueWaiter = true;
992	RTCritSectLeave(&pThis->CritSect);
993
994	RTSemEventWait(pThis->hEvtDoneQueue, cMillies);
995
996	RTCritSectEnter(&pThis->CritSect);
997	pThis->fHaveDoneQueueWaiter = false;
998
999	pUrb = usbHidQueueRemoveHead(&pThis->DoneQueue);
1000	}
1001
1002	RTCritSectLeave(&pThis->CritSect);
1003
1004	if (pUrb)
1005	Log(("usbHidUrbReap/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
1006	return pUrb;
1007	}
1008
1009
1010	/**
1011	* @copydoc PDMUSBREG::pfnUrbCancel
1012	*/
1013	static DECLCALLBACK(int) usbHidUrbCancel(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
1014	{
1015	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1016	LogFlow(("usbHidUrbCancel/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
1017	RTCritSectEnter(&pThis->CritSect);
1018
1019	/*
1020	* Remove the URB from the to-host queue and move it onto the done queue.
1021	*/
1022	if (usbHidQueueRemove(&pThis->ToHostQueue, pUrb))
1023	usbHidLinkDone(pThis, pUrb);
1024
1025	RTCritSectLeave(&pThis->CritSect);
1026	return VINF_SUCCESS;
1027	}
1028
1029
1030	/**
1031	* Handles request sent to the inbound (device to host) interrupt pipe. This is
1032	* rather different from bulk requests because an interrupt read URB may complete
1033	* after arbitrarily long time.
1034	*/
1035	static int usbHidHandleIntrDevToHost(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb)
1036	{
1037	/*
1038	* Stall the request if the pipe is halted.
1039	*/
1040	if (RT_UNLIKELY(pEp->fHalted))
1041	return usbHidCompleteStall(pThis, NULL, pUrb, "Halted pipe");
1042
1043	/*
1044	* Deal with the URB according to the state.
1045	*/
1046	switch (pThis->enmState)
1047	{
1048	/*
1049	* We've data left to transfer to the host.
1050	*/
1051	case USBHIDREQSTATE_DATA_TO_HOST:
1052	{
1053	AssertFailed();
1054	Log(("usbHidHandleIntrDevToHost: Entering STATUS\n"));
1055	return usbHidCompleteOk(pThis, pUrb, 0);
1056	}
1057
1058	/*
1059	* Status transfer.
1060	*/
1061	case USBHIDREQSTATE_STATUS:
1062	{
1063	AssertFailed();
1064	Log(("usbHidHandleIntrDevToHost: Entering READY\n"));
1065	pThis->enmState = USBHIDREQSTATE_READY;
1066	return usbHidCompleteOk(pThis, pUrb, 0);
1067	}
1068
1069	case USBHIDREQSTATE_READY:
1070	usbHidQueueAddTail(&pThis->ToHostQueue, pUrb);
1071	/* If device was not set idle, send the current report right away. */
1072	if (pThis->bIdle != 0 \|\| pThis->fHasPendingChanges)
1073	usbHidSendReport(pThis);
1074	LogFlow(("usbHidHandleIntrDevToHost: Sent report via %p:%s\n", pUrb, pUrb->pszDesc));
1075	return VINF_SUCCESS;
1076
1077	/*
1078	* Bad states, stall.
1079	*/
1080	default:
1081	Log(("usbHidHandleIntrDevToHost: enmState=%d cbData=%#x\n", pThis->enmState, pUrb->cbData));
1082	return usbHidCompleteStall(pThis, NULL, pUrb, "Really bad state (D2H)!");
1083	}
1084	}
1085
1086
1087	/**
1088	* Handles request sent to the default control pipe.
1089	*/
1090	static int usbHidHandleDefaultPipe(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb)
1091	{
1092	PVUSBSETUP pSetup = (PVUSBSETUP)&pUrb->abData[0];
1093	LogFlow(("usbHidHandleDefaultPipe: cbData=%d\n", pUrb->cbData));
1094
1095	AssertReturn(pUrb->cbData >= sizeof(*pSetup), VERR_VUSB_FAILED_TO_QUEUE_URB);
1096
1097	if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_STANDARD)
1098	{
1099	switch (pSetup->bRequest)
1100	{
1101	case VUSB_REQ_GET_DESCRIPTOR:
1102	{
1103	switch (pSetup->bmRequestType)
1104	{
1105	case VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1106	{
1107	switch (pSetup->wValue >> 8)
1108	{
1109	case VUSB_DT_STRING:
1110	Log(("usbHid: GET_DESCRIPTOR DT_STRING wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1111	break;
1112	default:
1113	Log(("usbHid: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1114	break;
1115	}
1116	break;
1117	}
1118
1119	case VUSB_TO_INTERFACE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1120	{
1121	switch (pSetup->wValue >> 8)
1122	{
1123	case DT_IF_HID_DESCRIPTOR:
1124	{
1125	uint32_t cbCopy;
1126
1127	/* Returned data is written after the setup message. */
1128	cbCopy = pUrb->cbData - sizeof(*pSetup);
1129	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbHidIfHidDesc));
1130	Log(("usbHidKbd: GET_DESCRIPTOR DT_IF_HID_DESCRIPTOR wValue=%#x wIndex=%#x cbCopy=%#x\n", pSetup->wValue, pSetup->wIndex, cbCopy));
1131	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbHidIfHidDesc, cbCopy);
1132	return usbHidCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
1133	}
1134
1135	case DT_IF_HID_REPORT:
1136	{
1137	uint32_t cbCopy;
1138
1139	/* Returned data is written after the setup message. */
1140	cbCopy = pUrb->cbData - sizeof(*pSetup);
1141	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbHidReportDesc));
1142	Log(("usbHid: GET_DESCRIPTOR DT_IF_HID_REPORT wValue=%#x wIndex=%#x cbCopy=%#x\n", pSetup->wValue, pSetup->wIndex, cbCopy));
1143	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbHidReportDesc, cbCopy);
1144	return usbHidCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
1145	}
1146
1147	default:
1148	Log(("usbHid: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1149	break;
1150	}
1151	break;
1152	}
1153
1154	default:
1155	Log(("usbHid: Bad GET_DESCRIPTOR req: bmRequestType=%#x\n", pSetup->bmRequestType));
1156	return usbHidCompleteStall(pThis, pEp, pUrb, "Bad GET_DESCRIPTOR");
1157	}
1158	break;
1159	}
1160
1161	case VUSB_REQ_GET_STATUS:
1162	{
1163	uint16_t wRet = 0;
1164
1165	if (pSetup->wLength != 2)
1166	{
1167	Log(("usbHid: Bad GET_STATUS req: wLength=%#x\n", pSetup->wLength));
1168	break;
1169	}
1170	Assert(pSetup->wValue == 0);
1171	switch (pSetup->bmRequestType)
1172	{
1173	case VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1174	{
1175	Assert(pSetup->wIndex == 0);
1176	Log(("usbHid: GET_STATUS (device)\n"));
1177	wRet = 0; /* Not self-powered, no remote wakeup. */
1178	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
1179	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
1180	}
1181
1182	case VUSB_TO_INTERFACE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1183	{
1184	if (pSetup->wIndex == 0)
1185	{
1186	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
1187	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
1188	}
1189	else
1190	{
1191	Log(("usbHid: GET_STATUS (interface) invalid, wIndex=%#x\n", pSetup->wIndex));
1192	}
1193	break;
1194	}
1195
1196	case VUSB_TO_ENDPOINT \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1197	{
1198	if (pSetup->wIndex < RT_ELEMENTS(pThis->aEps))
1199	{
1200	wRet = pThis->aEps[pSetup->wIndex].fHalted ? 1 : 0;
1201	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
1202	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
1203	}
1204	else
1205	{
1206	Log(("usbHid: GET_STATUS (endpoint) invalid, wIndex=%#x\n", pSetup->wIndex));
1207	}
1208	break;
1209	}
1210
1211	default:
1212	Log(("usbHid: Bad GET_STATUS req: bmRequestType=%#x\n", pSetup->bmRequestType));
1213	return usbHidCompleteStall(pThis, pEp, pUrb, "Bad GET_STATUS");
1214	}
1215	break;
1216	}
1217
1218	case VUSB_REQ_CLEAR_FEATURE:
1219	break;
1220	}
1221
1222	/** @todo implement this. */
1223	Log(("usbHid: Implement standard request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1224	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1225
1226	usbHidCompleteStall(pThis, pEp, pUrb, "TODO: standard request stuff");
1227	}
1228	else if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_CLASS)
1229	{
1230	switch (pSetup->bRequest)
1231	{
1232	case HID_REQ_SET_IDLE:
1233	{
1234	switch (pSetup->bmRequestType)
1235	{
1236	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_DEVICE:
1237	{
1238	Log(("usbHid: SET_IDLE wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1239	pThis->bIdle = pSetup->wValue >> 8;
1240	/* Consider 24ms to mean zero for keyboards (see IOUSBHIDDriver) */
1241	if (pThis->bIdle == 6) pThis->bIdle = 0;
1242	return usbHidCompleteOk(pThis, pUrb, 0);
1243	}
1244	break;
1245	}
1246	break;
1247	}
1248	case HID_REQ_GET_IDLE:
1249	{
1250	switch (pSetup->bmRequestType)
1251	{
1252	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_HOST:
1253	{
1254	Log(("usbHid: GET_IDLE wValue=%#x wIndex=%#x, returning %#x\n", pSetup->wValue, pSetup->wIndex, pThis->bIdle));
1255	pUrb->abData[sizeof(*pSetup)] = pThis->bIdle;
1256	return usbHidCompleteOk(pThis, pUrb, 1);
1257	}
1258	break;
1259	}
1260	break;
1261	}
1262	}
1263	Log(("usbHid: Unimplemented class request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1264	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1265
1266	usbHidCompleteStall(pThis, pEp, pUrb, "TODO: class request stuff");
1267	}
1268	else
1269	{
1270	Log(("usbHid: Unknown control msg: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1271	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1272	return usbHidCompleteStall(pThis, pEp, pUrb, "Unknown control msg");
1273	}
1274
1275	return VINF_SUCCESS;
1276	}
1277
1278
1279	/**
1280	* @copydoc PDMUSBREG::pfnUrbQueue
1281	*/
1282	static DECLCALLBACK(int) usbHidQueue(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
1283	{
1284	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1285	LogFlow(("usbHidQueue/#%u: pUrb=%p:%s EndPt=%#x\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc, pUrb->EndPt));
1286	RTCritSectEnter(&pThis->CritSect);
1287
1288	/*
1289	* Parse on a per end-point basis.
1290	*/
1291	int rc;
1292	switch (pUrb->EndPt)
1293	{
1294	case 0:
1295	rc = usbHidHandleDefaultPipe(pThis, &pThis->aEps[0], pUrb);
1296	break;
1297
1298	case 0x81:
1299	AssertFailed();
1300	case 0x01:
1301	rc = usbHidHandleIntrDevToHost(pThis, &pThis->aEps[1], pUrb);
1302	break;
1303
1304	default:
1305	AssertMsgFailed(("EndPt=%d\n", pUrb->EndPt));
1306	rc = VERR_VUSB_FAILED_TO_QUEUE_URB;
1307	break;
1308	}
1309
1310	RTCritSectLeave(&pThis->CritSect);
1311	return rc;
1312	}
1313
1314
1315	/**
1316	* @copydoc PDMUSBREG::pfnUsbClearHaltedEndpoint
1317	*/
1318	static DECLCALLBACK(int) usbHidUsbClearHaltedEndpoint(PPDMUSBINS pUsbIns, unsigned uEndpoint)
1319	{
1320	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1321	LogFlow(("usbHidUsbClearHaltedEndpoint/#%u: uEndpoint=%#x\n", pUsbIns->iInstance, uEndpoint));
1322
1323	if ((uEndpoint & ~0x80) < RT_ELEMENTS(pThis->aEps))
1324	{
1325	RTCritSectEnter(&pThis->CritSect);
1326	pThis->aEps[(uEndpoint & ~0x80)].fHalted = false;
1327	RTCritSectLeave(&pThis->CritSect);
1328	}
1329
1330	return VINF_SUCCESS;
1331	}
1332
1333
1334	/**
1335	* @copydoc PDMUSBREG::pfnUsbSetInterface
1336	*/
1337	static DECLCALLBACK(int) usbHidUsbSetInterface(PPDMUSBINS pUsbIns, uint8_t bInterfaceNumber, uint8_t bAlternateSetting)
1338	{
1339	LogFlow(("usbHidUsbSetInterface/#%u: bInterfaceNumber=%u bAlternateSetting=%u\n", pUsbIns->iInstance, bInterfaceNumber, bAlternateSetting));
1340	Assert(bAlternateSetting == 0);
1341	return VINF_SUCCESS;
1342	}
1343
1344
1345	/**
1346	* @copydoc PDMUSBREG::pfnUsbSetConfiguration
1347	*/
1348	static DECLCALLBACK(int) usbHidUsbSetConfiguration(PPDMUSBINS pUsbIns, uint8_t bConfigurationValue,
1349	const void pvOldCfgDesc, const void pvOldIfState, const void *pvNewCfgDesc)
1350	{
1351	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1352	LogFlow(("usbHidUsbSetConfiguration/#%u: bConfigurationValue=%u\n", pUsbIns->iInstance, bConfigurationValue));
1353	Assert(bConfigurationValue == 1);
1354	RTCritSectEnter(&pThis->CritSect);
1355
1356	/*
1357	* If the same config is applied more than once, it's a kind of reset.
1358	*/
1359	if (pThis->bConfigurationValue == bConfigurationValue)
1360	usbHidResetWorker(pThis, NULL, true /fSetConfig/); /** @todo figure out the exact difference */
1361	pThis->bConfigurationValue = bConfigurationValue;
1362
1363	/*
1364	* Tell the other end that the keyboard is now enabled and wants
1365	* to receive keystrokes.
1366	*/
1367	pThis->Lun0.pDrv->pfnSetActive(pThis->Lun0.pDrv, true);
1368
1369	RTCritSectLeave(&pThis->CritSect);
1370	return VINF_SUCCESS;
1371	}
1372
1373
1374	/**
1375	* @copydoc PDMUSBREG::pfnUsbGetDescriptorCache
1376	*/
1377	static DECLCALLBACK(PCPDMUSBDESCCACHE) usbHidUsbGetDescriptorCache(PPDMUSBINS pUsbIns)
1378	{
1379	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1380	LogFlow(("usbHidUsbGetDescriptorCache/#%u:\n", pUsbIns->iInstance));
1381	return &g_UsbHidDescCache;
1382	}
1383
1384
1385	/**
1386	* @copydoc PDMUSBREG::pfnUsbReset
1387	*/
1388	static DECLCALLBACK(int) usbHidUsbReset(PPDMUSBINS pUsbIns, bool fResetOnLinux)
1389	{
1390	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1391	LogFlow(("usbHidUsbReset/#%u:\n", pUsbIns->iInstance));
1392	RTCritSectEnter(&pThis->CritSect);
1393
1394	int rc = usbHidResetWorker(pThis, NULL, false /fSetConfig/);
1395
1396	RTCritSectLeave(&pThis->CritSect);
1397	return rc;
1398	}
1399
1400
1401	/**
1402	* @copydoc PDMUSBREG::pfnDestruct
1403	*/
1404	static void usbHidDestruct(PPDMUSBINS pUsbIns)
1405	{
1406	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1407	LogFlow(("usbHidDestruct/#%u:\n", pUsbIns->iInstance));
1408
1409	if (RTCritSectIsInitialized(&pThis->CritSect))
1410	{
1411	/* Let whoever runs in this critical section complete. */
1412	RTCritSectEnter(&pThis->CritSect);
1413	RTCritSectLeave(&pThis->CritSect);
1414	RTCritSectDelete(&pThis->CritSect);
1415	}
1416
1417	if (pThis->hEvtDoneQueue != NIL_RTSEMEVENT)
1418	{
1419	RTSemEventDestroy(pThis->hEvtDoneQueue);
1420	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1421	}
1422	}
1423
1424
1425	/**
1426	* @copydoc PDMUSBREG::pfnConstruct
1427	*/
1428	static DECLCALLBACK(int) usbHidConstruct(PPDMUSBINS pUsbIns, int iInstance, PCFGMNODE pCfg, PCFGMNODE pCfgGlobal)
1429	{
1430	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1431	Log(("usbHidConstruct/#%u:\n", iInstance));
1432
1433	/*
1434	* Perform the basic structure initialization first so the destructor
1435	* will not misbehave.
1436	*/
1437	pThis->pUsbIns = pUsbIns;
1438	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1439	pThis->XlatState = SS_IDLE;
1440	usbHidQueueInit(&pThis->ToHostQueue);
1441	usbHidQueueInit(&pThis->DoneQueue);
1442
1443	int rc = RTCritSectInit(&pThis->CritSect);
1444	AssertRCReturn(rc, rc);
1445
1446	rc = RTSemEventCreate(&pThis->hEvtDoneQueue);
1447	AssertRCReturn(rc, rc);
1448
1449	/*
1450	* Validate and read the configuration.
1451	*/
1452	rc = CFGMR3ValidateConfig(pCfg, "/", "", "", "UsbHid", iInstance);
1453	if (RT_FAILURE(rc))
1454	return rc;
1455
1456	pThis->Lun0.IBase.pfnQueryInterface = usbHidKeyboardQueryInterface;
1457	pThis->Lun0.IPort.pfnPutEvent = usbHidKeyboardPutEvent;
1458
1459	/*
1460	* Attach the keyboard driver.
1461	*/
1462	rc = PDMUsbHlpDriverAttach(pUsbIns, 0 /iLun/, &pThis->Lun0.IBase, &pThis->Lun0.pDrvBase, "Keyboard Port");
1463	if (RT_FAILURE(rc))
1464	return PDMUsbHlpVMSetError(pUsbIns, rc, RT_SRC_POS, N_("HID failed to attach keyboard driver"));
1465
1466	pThis->Lun0.pDrv = PDMIBASE_QUERY_INTERFACE(pThis->Lun0.pDrvBase, PDMIKEYBOARDCONNECTOR);
1467	if (!pThis->Lun0.pDrv)
1468	return PDMUsbHlpVMSetError(pUsbIns, VERR_PDM_MISSING_INTERFACE, RT_SRC_POS, N_("HID failed to query keyboard interface"));
1469
1470	return VINF_SUCCESS;
1471	}
1472
1473
1474	/**
1475	* The USB Human Interface Device (HID) Keyboard registration record.
1476	*/
1477	const PDMUSBREG g_UsbHidKbd =
1478	{
1479	/* u32Version */
1480	PDM_USBREG_VERSION,
1481	/* szName */
1482	"HidKeyboard",
1483	/* pszDescription */
1484	"USB HID Keyboard.",
1485	/* fFlags */
1486	0,
1487	/* cMaxInstances */
1488	~0U,
1489	/* cbInstance */
1490	sizeof(USBHID),
1491	/* pfnConstruct */
1492	usbHidConstruct,
1493	/* pfnDestruct */
1494	usbHidDestruct,
1495	/* pfnVMInitComplete */
1496	NULL,
1497	/* pfnVMPowerOn */
1498	NULL,
1499	/* pfnVMReset */
1500	NULL,
1501	/* pfnVMSuspend */
1502	NULL,
1503	/* pfnVMResume */
1504	NULL,
1505	/* pfnVMPowerOff */
1506	NULL,
1507	/* pfnHotPlugged */
1508	NULL,
1509	/* pfnHotUnplugged */
1510	NULL,
1511	/* pfnDriverAttach */
1512	NULL,
1513	/* pfnDriverDetach */
1514	NULL,
1515	/* pfnQueryInterface */
1516	NULL,
1517	/* pfnUsbReset */
1518	usbHidUsbReset,
1519	/* pfnUsbGetDescriptorCache */
1520	usbHidUsbGetDescriptorCache,
1521	/* pfnUsbSetConfiguration */
1522	usbHidUsbSetConfiguration,
1523	/* pfnUsbSetInterface */
1524	usbHidUsbSetInterface,
1525	/* pfnUsbClearHaltedEndpoint */
1526	usbHidUsbClearHaltedEndpoint,
1527	/* pfnUrbNew */
1528	NULL/usbHidUrbNew/,
1529	/* pfnUrbQueue */
1530	usbHidQueue,
1531	/* pfnUrbCancel */
1532	usbHidUrbCancel,
1533	/* pfnUrbReap */
1534	usbHidUrbReap,
1535	/* u32TheEnd */
1536	PDM_USBREG_VERSION
1537	};

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source: vbox/trunk/src/VBox/Devices/Input/UsbKbd.cpp@ 47631

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