UsbKbd.cpp@ 40246

Last change on this file since 40246 was 37795, checked in by vboxsync, 13 years ago
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1	/* $Id: UsbKbd.cpp 37795 2011-07-06 10:28:24Z vboxsync $ */
2	/** @file
3	* UsbKbd - USB Human Interface Device Emulation, Keyboard.
4	*/
5
6	/*
7	* Copyright (C) 2007-2010 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	/** @} */
71
72	/*******************************************************************************
73	* Structures and Typedefs *
74	*******************************************************************************/
75
76	/**
77	* The USB HID request state.
78	*/
79	typedef enum USBHIDREQSTATE
80	{
81	/** Invalid status. */
82	USBHIDREQSTATE_INVALID = 0,
83	/** Ready to receive a new read request. */
84	USBHIDREQSTATE_READY,
85	/** Have (more) data for the host. */
86	USBHIDREQSTATE_DATA_TO_HOST,
87	/** Waiting to supply status information to the host. */
88	USBHIDREQSTATE_STATUS,
89	/** The end of the valid states. */
90	USBHIDREQSTATE_END
91	} USBHIDREQSTATE;
92
93
94	/**
95	* Endpoint status data.
96	*/
97	typedef struct USBHIDEP
98	{
99	bool fHalted;
100	} USBHIDEP;
101	/** Pointer to the endpoint status. */
102	typedef USBHIDEP *PUSBHIDEP;
103
104
105	/**
106	* A URB queue.
107	*/
108	typedef struct USBHIDURBQUEUE
109	{
110	/** The head pointer. */
111	PVUSBURB pHead;
112	/** Where to insert the next entry. */
113	PVUSBURB *ppTail;
114	} USBHIDURBQUEUE;
115	/** Pointer to a URB queue. */
116	typedef USBHIDURBQUEUE *PUSBHIDURBQUEUE;
117	/** Pointer to a const URB queue. */
118	typedef USBHIDURBQUEUE const *PCUSBHIDURBQUEUE;
119
120
121	/**
122	* The USB HID report structure for regular keys.
123	*/
124	typedef struct USBHIDK_REPORT
125	{
126	uint8_t ShiftState; /*< Modifier keys bitfield /
127	uint8_t Reserved; /*< Currently unused /
128	uint8_t aKeys[6]; /*< Normal keys /
129	} USBHIDK_REPORT, *PUSBHIDK_REPORT;
130
131	/** Scancode translator state. */
132	typedef enum {
133	SS_IDLE, /*< Starting state. /
134	SS_EXT, /*< E0 byte was received. /
135	SS_EXT1 /*< E1 byte was received. /
136	} scan_state_t;
137
138	/**
139	* The USB HID instance data.
140	*/
141	typedef struct USBHID
142	{
143	/** Pointer back to the PDM USB Device instance structure. */
144	PPDMUSBINS pUsbIns;
145	/** Critical section protecting the device state. */
146	RTCRITSECT CritSect;
147
148	/** The current configuration.
149	* (0 - default, 1 - the one supported configuration, i.e configured.) */
150	uint8_t bConfigurationValue;
151	/** USB HID Idle value..
152	* (0 - only report state change, !=0 - report in bIdle * 4ms intervals.) */
153	uint8_t bIdle;
154	/** Endpoint 0 is the default control pipe, 1 is the dev->host interrupt one. */
155	USBHIDEP aEps[2];
156	/** The state of the HID (state machine).*/
157	USBHIDREQSTATE enmState;
158
159	/** State of the scancode translation. */
160	scan_state_t XlatState;
161
162	/** Pending to-host queue.
163	* The URBs waiting here are waiting for data to become available.
164	*/
165	USBHIDURBQUEUE ToHostQueue;
166
167	/** Done queue
168	* The URBs stashed here are waiting to be reaped. */
169	USBHIDURBQUEUE DoneQueue;
170	/** Signalled when adding an URB to the done queue and fHaveDoneQueueWaiter
171	* is set. */
172	RTSEMEVENT hEvtDoneQueue;
173	/** Someone is waiting on the done queue. */
174	bool fHaveDoneQueueWaiter;
175	/** If device has pending changes. */
176	bool fHasPendingChanges;
177	/** Keypresses which have not yet been reported. A workaround for the
178	* problem of keys being released before the keypress could be reported. */
179	uint8_t abUnreportedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
180	/** Currently depressed keys */
181	uint8_t abDepressedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
182
183	/**
184	* Keyboard port - LUN#0.
185	*
186	* @implements PDMIBASE
187	* @implements PDMIKEYBOARDPORT
188	*/
189	struct
190	{
191	/** The base interface for the keyboard port. */
192	PDMIBASE IBase;
193	/** The keyboard port base interface. */
194	PDMIKEYBOARDPORT IPort;
195
196	/** The base interface of the attached keyboard driver. */
197	R3PTRTYPE(PPDMIBASE) pDrvBase;
198	/** The keyboard interface of the attached keyboard driver. */
199	R3PTRTYPE(PPDMIKEYBOARDCONNECTOR) pDrv;
200	} Lun0;
201	} USBHID;
202	/** Pointer to the USB HID instance data. */
203	typedef USBHID *PUSBHID;
204
205	/*******************************************************************************
206	* Global Variables *
207	*******************************************************************************/
208	static const PDMUSBDESCCACHESTRING g_aUsbHidStrings_en_US[] =
209	{
210	{ USBHID_STR_ID_MANUFACTURER, "VirtualBox" },
211	{ USBHID_STR_ID_PRODUCT, "USB Keyboard" },
212	};
213
214	static const PDMUSBDESCCACHELANG g_aUsbHidLanguages[] =
215	{
216	{ 0x0409, RT_ELEMENTS(g_aUsbHidStrings_en_US), g_aUsbHidStrings_en_US }
217	};
218
219	static const VUSBDESCENDPOINTEX g_aUsbHidEndpointDescs[] =
220	{
221	{
222	{
223	/* .bLength = */ sizeof(VUSBDESCENDPOINT),
224	/* .bDescriptorType = */ VUSB_DT_ENDPOINT,
225	/* .bEndpointAddress = / 0x81 / ep=1, in */,
226	/* .bmAttributes = / 3 / interrupt */,
227	/* .wMaxPacketSize = */ 8,
228	/* .bInterval = */ 10,
229	},
230	/* .pvMore = */ NULL,
231	/* .pvClass = */ NULL,
232	/* .cbClass = */ 0
233	},
234	};
235
236	/** HID report descriptor. */
237	static const uint8_t g_UsbHidReportDesc[] =
238	{
239	/* Usage Page / 0x05, 0x01, / Generic Desktop */
240	/* Usage / 0x09, 0x06, / Keyboard */
241	/* Collection / 0xA1, 0x01, / Application */
242	/* Usage Page / 0x05, 0x07, / Keyboard */
243	/* Usage Minimum / 0x19, 0xE0, / Left Ctrl Key */
244	/* Usage Maximum / 0x29, 0xE7, / Right GUI Key */
245	/* Logical Minimum / 0x15, 0x00, / 0 */
246	/* Logical Maximum / 0x25, 0x01, / 1 */
247	/* Report Count / 0x95, 0x08, / 8 */
248	/* Report Size / 0x75, 0x01, / 1 */
249	/* Input / 0x81, 0x02, / Data, Value, Absolute, Bit field */
250	/* Report Count / 0x95, 0x01, / 1 */
251	/* Report Size / 0x75, 0x08, / 8 (padding bits) */
252	/* Input / 0x81, 0x01, / Constant, Array, Absolute, Bit field */
253	/* Report Count / 0x95, 0x05, / 5 */
254	/* Report Size / 0x75, 0x01, / 1 */
255	/* Usage Page / 0x05, 0x08, / LEDs */
256	/* Usage Minimum / 0x19, 0x01, / Num Lock */
257	/* Usage Maximum / 0x29, 0x05, / Kana */
258	/* Output / 0x91, 0x02, / Data, Value, Absolute, Non-volatile,Bit field */
259	/* Report Count / 0x95, 0x01, / 1 */
260	/* Report Size / 0x75, 0x03, / 3 */
261	/* Output / 0x91, 0x01, / Constant, Value, Absolute, Non-volatile, Bit field */
262	/* Report Count / 0x95, 0x06, / 6 */
263	/* Report Size / 0x75, 0x08, / 8 */
264	/* Logical Minimum / 0x15, 0x00, / 0 */
265	/* Logical Maximum / 0x26, 0xFF,0x00,/ 255 */
266	/* Usage Page / 0x05, 0x07, / Keyboard */
267	/* Usage Minimum / 0x19, 0x00, / 0 */
268	/* Usage Maximum / 0x29, 0xFF, / 255 */
269	/* Input / 0x81, 0x00, / Data, Array, Absolute, Bit field */
270	/* End Collection */ 0xC0,
271	};
272
273	/** Additional HID class interface descriptor. */
274	static const uint8_t g_UsbHidIfHidDesc[] =
275	{
276	/* .bLength = */ 0x09,
277	/* .bDescriptorType = / 0x21, / HID */
278	/* .bcdHID = / 0x10, 0x01, / 1.1 */
279	/* .bCountryCode = / 0x0D, / International (ISO) */
280	/* .bNumDescriptors = */ 1,
281	/* .bDescriptorType = / 0x22, / Report */
282	/* .wDescriptorLength = */ sizeof(g_UsbHidReportDesc), 0x00
283	};
284
285	static const VUSBDESCINTERFACEEX g_UsbHidInterfaceDesc =
286	{
287	{
288	/* .bLength = */ sizeof(VUSBDESCINTERFACE),
289	/* .bDescriptorType = */ VUSB_DT_INTERFACE,
290	/* .bInterfaceNumber = */ 0,
291	/* .bAlternateSetting = */ 0,
292	/* .bNumEndpoints = */ 1,
293	/* .bInterfaceClass = / 3 / HID */,
294	/* .bInterfaceSubClass = / 1 / Boot Interface */,
295	/* .bInterfaceProtocol = / 1 / Keyboard */,
296	/* .iInterface = */ 0
297	},
298	/* .pvMore = */ NULL,
299	/* .pvClass = */ &g_UsbHidIfHidDesc,
300	/* .cbClass = */ sizeof(g_UsbHidIfHidDesc),
301	&g_aUsbHidEndpointDescs[0]
302	};
303
304	static const VUSBINTERFACE g_aUsbHidInterfaces[] =
305	{
306	{ &g_UsbHidInterfaceDesc, /* .cSettings = */ 1 },
307	};
308
309	static const VUSBDESCCONFIGEX g_UsbHidConfigDesc =
310	{
311	{
312	/* .bLength = */ sizeof(VUSBDESCCONFIG),
313	/* .bDescriptorType = */ VUSB_DT_CONFIG,
314	/* .wTotalLength = / 0 / recalculated on read */,
315	/* .bNumInterfaces = */ RT_ELEMENTS(g_aUsbHidInterfaces),
316	/* .bConfigurationValue =*/ 1,
317	/* .iConfiguration = */ 0,
318	/* .bmAttributes = */ RT_BIT(7),
319	/* .MaxPower = / 50 / 100mA */
320	},
321	NULL, /* pvMore */
322	&g_aUsbHidInterfaces[0],
323	NULL /* pvOriginal */
324	};
325
326	static const VUSBDESCDEVICE g_UsbHidDeviceDesc =
327	{
328	/* .bLength = */ sizeof(g_UsbHidDeviceDesc),
329	/* .bDescriptorType = */ VUSB_DT_DEVICE,
330	/* .bcdUsb = / 0x110, / 1.1 */
331	/* .bDeviceClass = / 0 / Class specified in the interface desc. */,
332	/* .bDeviceSubClass = / 0 / Subclass specified in the interface desc. */,
333	/* .bDeviceProtocol = / 0 / Protocol specified in the interface desc. */,
334	/* .bMaxPacketSize0 = */ 8,
335	/* .idVendor = */ VBOX_USB_VENDOR,
336	/* .idProduct = */ USBHID_PID_KEYBOARD,
337	/* .bcdDevice = / 0x0100, / 1.0 */
338	/* .iManufacturer = */ USBHID_STR_ID_MANUFACTURER,
339	/* .iProduct = */ USBHID_STR_ID_PRODUCT,
340	/* .iSerialNumber = */ 0,
341	/* .bNumConfigurations = */ 1
342	};
343
344	static const PDMUSBDESCCACHE g_UsbHidDescCache =
345	{
346	/* .pDevice = */ &g_UsbHidDeviceDesc,
347	/* .paConfigs = */ &g_UsbHidConfigDesc,
348	/* .paLanguages = */ g_aUsbHidLanguages,
349	/* .cLanguages = */ RT_ELEMENTS(g_aUsbHidLanguages),
350	/* .fUseCachedDescriptors = */ true,
351	/* .fUseCachedStringsDescriptors = */ true
352	};
353
354
355	/*
356	* Because of historical reasons and poor design, VirtualBox internally uses BIOS
357	* PC/XT style scan codes to represent keyboard events. Each key press and release is
358	* represented as a stream of bytes, typically only one byte but up to four-byte
359	* sequences are possible. In the typical case, the GUI front end generates the stream
360	* of scan codes which we need to translate back to a single up/down event.
361	*
362	* This function could possibly live somewhere else.
363	*/
364
365	/** Lookup table for converting PC/XT scan codes to USB HID usage codes. */
366	static uint8_t aScancode2Hid[] =
367	{
368	0x00, 0x29, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, /* 00-07 */
369	0x24, 0x25, 0x26, 0x27, 0x2d, 0x2e, 0x2a, 0x2b, /* 08-1F */
370	0x14, 0x1a, 0x08, 0x15, 0x17, 0x1c, 0x18, 0x0c, /* 10-17 */
371	0x12, 0x13, 0x2f, 0x30, 0x28, 0xe0, 0x04, 0x16, /* 18-1F */
372	0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x0f, 0x33, /* 20-27 */
373	0x34, 0x35, 0xe1, 0x31, 0x1d, 0x1b, 0x06, 0x19, /* 28-2F */
374	0x05, 0x11, 0x10, 0x36, 0x37, 0x38, 0xe5, 0x55, /* 30-37 */
375	0xe2, 0x2c, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, /* 38-3F */
376	0x3f, 0x40, 0x41, 0x42, 0x43, 0x53, 0x47, 0x5f, /* 40-47 */
377	0x60, 0x61, 0x56, 0x5c, 0x5d, 0x5e, 0x57, 0x59, /* 48-4F */
378	0x5a, 0x5b, 0x62, 0x63, 0x00, 0x00, 0x64, 0x44, /* 50-57 */
379	0x45, 0x67, 0x00, 0x00, 0x8c, 0x00, 0x00, 0x00, /* 58-5F */
380	0x00, 0x00, 0x00, 0x00, 0x68, 0x69, 0x6a, 0x6b, /* 60-67 */
381	0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x00, /* 68-6F */
382	0x88, 0x91, 0x90, 0x87, 0x00, 0x00, 0x00, 0x00, /* 70-77 */
383	0x00, 0x8a, 0x00, 0x8b, 0x00, 0x89, 0x85, 0x00 /* 78-7F */
384	};
385
386	/** Lookup table for extended scancodes (arrow keys etc.). */
387	static uint8_t aExtScan2Hid[] =
388	{
389	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 00-07 */
390	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 08-1F */
391	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 10-17 */
392	0x00, 0x00, 0x00, 0x00, 0x58, 0xe4, 0x00, 0x00, /* 18-1F */
393	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 20-27 */
394	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 28-2F */
395	0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x00, 0x46, /* 30-37 */
396	/* Sun-specific keys. Most of the XT codes are made up */
397	0xe6, 0x00, 0x00, 0x75, 0x76, 0x77, 0xA3, 0x78, /* 38-3F */
398	0x80, 0x81, 0x82, 0x79, 0x00, 0x48, 0x00, 0x4a, /* 40-47 */
399	0x52, 0x4b, 0x00, 0x50, 0x00, 0x4f, 0x00, 0x4d, /* 48-4F */
400	0x51, 0x4e, 0x49, 0x4c, 0x00, 0x00, 0x00, 0x00, /* 50-57 */
401	0x00, 0x00, 0x00, 0xe3, 0xe7, 0x65, 0x66, 0x00, /* 58-5F */
402	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 60-67 */
403	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 68-6F */
404	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 70-77 */
405	0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* 78-7F */
406	};
407
408	/**
409	* Convert a PC scan code to a USB HID usage byte.
410	*
411	* @param state Current state of the translator (scan_state_t).
412	* @param scanCode Incoming scan code.
413	* @param pUsage Pointer to usage; high bit set for key up events. The
414	* contents are only valid if returned state is SS_IDLE.
415	*
416	* @return scan_state_t New state of the translator.
417	*/
418	static scan_state_t ScancodeToHidUsage(scan_state_t state, uint8_t scanCode, uint32_t *pUsage)
419	{
420	uint32_t keyUp;
421	uint8_t usage;
422
423	Assert(pUsage);
424
425	/* Isolate the scan code and key break flag. */
426	keyUp = (scanCode & 0x80) << 24;
427
428	switch (state) {
429	case SS_IDLE:
430	if (scanCode == 0xE0) {
431	state = SS_EXT;
432	} else if (scanCode == 0xE1) {
433	state = SS_EXT1;
434	} else {
435	usage = aScancode2Hid[scanCode & 0x7F];
436	*pUsage = usage \| keyUp;
437	/* Remain in SS_IDLE state. */
438	}
439	break;
440	case SS_EXT:
441	usage = aExtScan2Hid[scanCode & 0x7F];
442	*pUsage = usage \| keyUp;
443	state = SS_IDLE;
444	break;
445	case SS_EXT1:
446	Assert(0); //@todo - sort out the Pause key
447	*pUsage = 0;
448	state = SS_IDLE;
449	break;
450	}
451	return state;
452	}
453
454	/*******************************************************************************
455	* Internal Functions *
456	*******************************************************************************/
457
458
459	/**
460	* Initializes an URB queue.
461	*
462	* @param pQueue The URB queue.
463	*/
464	static void usbHidQueueInit(PUSBHIDURBQUEUE pQueue)
465	{
466	pQueue->pHead = NULL;
467	pQueue->ppTail = &pQueue->pHead;
468	}
469
470	/**
471	* Inserts an URB at the end of the queue.
472	*
473	* @param pQueue The URB queue.
474	* @param pUrb The URB to insert.
475	*/
476	DECLINLINE(void) usbHidQueueAddTail(PUSBHIDURBQUEUE pQueue, PVUSBURB pUrb)
477	{
478	pUrb->Dev.pNext = NULL;
479	*pQueue->ppTail = pUrb;
480	pQueue->ppTail = &pUrb->Dev.pNext;
481	}
482
483
484	/**
485	* Unlinks the head of the queue and returns it.
486	*
487	* @returns The head entry.
488	* @param pQueue The URB queue.
489	*/
490	DECLINLINE(PVUSBURB) usbHidQueueRemoveHead(PUSBHIDURBQUEUE pQueue)
491	{
492	PVUSBURB pUrb = pQueue->pHead;
493	if (pUrb)
494	{
495	PVUSBURB pNext = pUrb->Dev.pNext;
496	pQueue->pHead = pNext;
497	if (!pNext)
498	pQueue->ppTail = &pQueue->pHead;
499	else
500	pUrb->Dev.pNext = NULL;
501	}
502	return pUrb;
503	}
504
505
506	/**
507	* Removes an URB from anywhere in the queue.
508	*
509	* @returns true if found, false if not.
510	* @param pQueue The URB queue.
511	* @param pUrb The URB to remove.
512	*/
513	DECLINLINE(bool) usbHidQueueRemove(PUSBHIDURBQUEUE pQueue, PVUSBURB pUrb)
514	{
515	PVUSBURB pCur = pQueue->pHead;
516	if (pCur == pUrb)
517	pQueue->pHead = pUrb->Dev.pNext;
518	else
519	{
520	while (pCur)
521	{
522	if (pCur->Dev.pNext == pUrb)
523	{
524	pCur->Dev.pNext = pUrb->Dev.pNext;
525	break;
526	}
527	pCur = pCur->Dev.pNext;
528	}
529	if (!pCur)
530	return false;
531	}
532	if (!pUrb->Dev.pNext)
533	pQueue->ppTail = &pQueue->pHead;
534	return true;
535	}
536
537
538	/**
539	* Checks if the queue is empty or not.
540	*
541	* @returns true if it is, false if it isn't.
542	* @param pQueue The URB queue.
543	*/
544	DECLINLINE(bool) usbHidQueueIsEmpty(PCUSBHIDURBQUEUE pQueue)
545	{
546	return pQueue->pHead == NULL;
547	}
548
549
550	/**
551	* Links an URB into the done queue.
552	*
553	* @param pThis The HID instance.
554	* @param pUrb The URB.
555	*/
556	static void usbHidLinkDone(PUSBHID pThis, PVUSBURB pUrb)
557	{
558	usbHidQueueAddTail(&pThis->DoneQueue, pUrb);
559
560	if (pThis->fHaveDoneQueueWaiter)
561	{
562	int rc = RTSemEventSignal(pThis->hEvtDoneQueue);
563	AssertRC(rc);
564	}
565	}
566
567
568
569	/**
570	* Completes the URB with a stalled state, halting the pipe.
571	*/
572	static int usbHidCompleteStall(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb, const char *pszWhy)
573	{
574	Log(("usbHidCompleteStall/#%u: pUrb=%p:%s: %s\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, pszWhy));
575
576	pUrb->enmStatus = VUSBSTATUS_STALL;
577
578	/** @todo figure out if the stall is global or pipe-specific or both. */
579	if (pEp)
580	pEp->fHalted = true;
581	else
582	{
583	pThis->aEps[0].fHalted = true;
584	pThis->aEps[1].fHalted = true;
585	}
586
587	usbHidLinkDone(pThis, pUrb);
588	return VINF_SUCCESS;
589	}
590
591
592	/**
593	* Completes the URB with a OK state.
594	*/
595	static int usbHidCompleteOk(PUSBHID pThis, PVUSBURB pUrb, size_t cbData)
596	{
597	Log(("usbHidCompleteOk/#%u: pUrb=%p:%s cbData=%#zx\n", pThis->pUsbIns->iInstance, pUrb, pUrb->pszDesc, cbData));
598
599	pUrb->enmStatus = VUSBSTATUS_OK;
600	pUrb->cbData = (uint32_t)cbData;
601
602	usbHidLinkDone(pThis, pUrb);
603	return VINF_SUCCESS;
604	}
605
606
607	/**
608	* Reset worker for usbHidUsbReset, usbHidUsbSetConfiguration and
609	* usbHidHandleDefaultPipe.
610	*
611	* @returns VBox status code.
612	* @param pThis The HID instance.
613	* @param pUrb Set when usbHidHandleDefaultPipe is the
614	* caller.
615	* @param fSetConfig Set when usbHidUsbSetConfiguration is the
616	* caller.
617	*/
618	static int usbHidResetWorker(PUSBHID pThis, PVUSBURB pUrb, bool fSetConfig)
619	{
620	/*
621	* Deactivate the keyboard.
622	*/
623	pThis->Lun0.pDrv->pfnSetActive(pThis->Lun0.pDrv, false);
624
625	/*
626	* Reset the device state.
627	*/
628	pThis->enmState = USBHIDREQSTATE_READY;
629	pThis->bIdle = 0;
630	pThis->fHasPendingChanges = false;
631
632	for (unsigned i = 0; i < RT_ELEMENTS(pThis->aEps); i++)
633	pThis->aEps[i].fHalted = false;
634
635	if (!pUrb && !fSetConfig) /* (only device reset) */
636	pThis->bConfigurationValue = 0; /* default */
637
638	/*
639	* Ditch all pending URBs.
640	*/
641	PVUSBURB pCurUrb;
642	while ((pCurUrb = usbHidQueueRemoveHead(&pThis->ToHostQueue)) != NULL)
643	{
644	pCurUrb->enmStatus = VUSBSTATUS_CRC;
645	usbHidLinkDone(pThis, pCurUrb);
646	}
647
648	if (pUrb)
649	return usbHidCompleteOk(pThis, pUrb, 0);
650	return VINF_SUCCESS;
651	}
652
653	#ifdef DEBUG
654	# define HEX_DIGIT(x) (((x) < 0xa) ? ((x) + '0') : ((x) - 0xa + 'a'))
655	static void usbHidComputePressed(PUSBHIDK_REPORT pReport, char* pszBuf, unsigned cbBuf)
656	{
657	unsigned offBuf = 0;
658	unsigned i;
659	for (i = 0; i < RT_ELEMENTS(pReport->aKeys); ++i)
660	{
661	uint8_t uCode = pReport->aKeys[i];
662	if (uCode != 0)
663	{
664	if (offBuf + 4 >= cbBuf)
665	break;
666	pszBuf[offBuf++] = HEX_DIGIT(uCode >> 4);
667	pszBuf[offBuf++] = HEX_DIGIT(uCode & 0xf);
668	pszBuf[offBuf++] = ' ';
669	}
670	}
671	pszBuf[offBuf++] = '\0';
672	}
673	# undef HEX_DIGIT
674	#endif
675
676	/**
677	* Returns true if the usage code corresponds to a keyboard modifier key
678	* (left or right ctrl, shift, alt or GUI). The usage codes for these keys
679	* are the range 0xe0 to 0xe7.
680	*/
681	static bool usbHidUsageCodeIsModifier(uint8_t u8Usage)
682	{
683	return u8Usage >= 0xe0 && u8Usage <= 0xe7;
684	}
685
686	/**
687	* Convert a USB HID usage code to a keyboard modifier flag. The arithmetic
688	* is simple: the modifier keys have usage codes from 0xe0 to 0xe7, and the
689	* lower nibble is the bit number of the flag.
690	*/
691	static uint8_t usbHidModifierToFlag(uint8_t u8Usage)
692	{
693	Assert(usbHidUsageCodeIsModifier(u8Usage));
694	return RT_BIT(u8Usage & 0xf);
695	}
696
697	/**
698	* Create a USB HID keyboard report based on a vector of keys which have been
699	* pressed since the last report was created (so that we don't miss keys that
700	* are only pressed briefly) and a vector of currently depressed keys.
701	* The keys in the report aKeys array are in increasing order (important for
702	* the test case).
703	*/
704	static int usbHidFillReport(PUSBHIDK_REPORT pReport,
705	uint8_t *pabUnreportedKeys,
706	uint8_t *pabDepressedKeys)
707	{
708	int rc = false;
709	unsigned iBuf = 0;
710	RT_ZERO(*pReport);
711	for (unsigned iKey = 0; iKey < VBOX_USB_USAGE_ARRAY_SIZE; ++iKey)
712	{
713	AssertReturn(iBuf <= RT_ELEMENTS(pReport->aKeys),
714	VERR_INTERNAL_ERROR);
715	if (pabUnreportedKeys[iKey] \|\| pabDepressedKeys[iKey])
716	{
717	if (usbHidUsageCodeIsModifier(iKey))
718	pReport->ShiftState \|= usbHidModifierToFlag(iKey);
719	else if (iBuf == RT_ELEMENTS(pReport->aKeys))
720	{
721	/* The USB HID spec says that the entire vector should be
722	* set to ErrorRollOver on overflow. We don't mind if this
723	* path is taken several times for one report. */
724	for (unsigned iBuf2 = 0;
725	iBuf2 < RT_ELEMENTS(pReport->aKeys); ++iBuf2)
726	pReport->aKeys[iBuf2] = USBHID_USAGE_ROLL_OVER;
727	}
728	else
729	{
730	pReport->aKeys[iBuf] = iKey;
731	++iBuf;
732	/* More Korean keyboard hackery: Give the caller a hint that
733	* a key release event needs reporting.
734	*/
735	if (iKey == 0x90 \|\| iKey == 0x91)
736	rc = true;
737	}
738	pabUnreportedKeys[iKey] = 0;
739	}
740	}
741	return rc;
742	}
743
744	#ifdef DEBUG
745	/** Test data for testing usbHidFillReport(). The format is:
746	* - Unreported keys (zero terminated array)
747	* - Depressed keys (zero terminated array)
748	* - Expected shift state in the report (single byte inside array)
749	* - Expected keys buffer contents (array of six bytes)
750	*/
751	static const uint8_t testUsbHidFillReportData[][4][10] = {
752	/* Just unreported, no modifiers */
753	{{4, 9, 0}, {0}, {0}, {4, 9, 0, 0, 0, 0}},
754	/* Just unreported, one modifier */
755	{{4, 9, 0xe2, 0}, {0}, {4}, {4, 9, 0, 0, 0, 0}},
756	/* Just unreported, two modifiers */
757	{{4, 9, 0xe2, 0xe4, 0}, {0}, {20}, {4, 9, 0, 0, 0, 0}},
758	/* Just depressed, no modifiers */
759	{{0}, {7, 20, 0}, {0}, {7, 20, 0, 0, 0, 0}},
760	/* Just depressed, one modifier */
761	{{0}, {7, 20, 0xe3, 0}, {8}, {7, 20, 0, 0, 0, 0}},
762	/* Just depressed, two modifiers */
763	{{0}, {7, 20, 0xe3, 0xe6, 0}, {72}, {7, 20, 0, 0, 0, 0}},
764	/* Unreported and depressed, no overlap, no modifiers */
765	{{5, 10, 0}, {8, 21, 0}, {0}, {5, 8, 10, 21, 0, 0}},
766	/* Unreported and depressed, one overlap, no modifiers */
767	{{5, 10, 0}, {8, 10, 21, 0}, {0}, {5, 8, 10, 21, 0, 0}},
768	/* Unreported and depressed, no overlap, non-overlapping modifiers */
769	{{5, 10, 0xe2, 0xe4, 0}, {8, 21, 0xe3, 0xe6, 0}, {92},
770	{5, 8, 10, 21, 0, 0}},
771	/* Unreported and depressed, one overlap, non-overlapping modifiers */
772	{{5, 10, 21, 0xe2, 0xe4, 0}, {8, 21, 0xe3, 0xe6, 0}, {92},
773	{5, 8, 10, 21, 0, 0}},
774	/* Unreported and depressed, no overlap, overlapping modifiers */
775	{{5, 10, 0xe2, 0xe4, 0}, {8, 21, 0xe3, 0xe4, 0}, {28},
776	{5, 8, 10, 21, 0, 0}},
777	/* Unreported and depressed, one overlap, overlapping modifiers */
778	{{5, 10, 0xe2, 0xe4, 0}, {5, 8, 21, 0xe3, 0xe4, 0}, {28},
779	{5, 8, 10, 21, 0, 0}},
780	/* Just too many unreported, no modifiers */
781	{{4, 9, 11, 12, 16, 18, 20, 0}, {0}, {0}, {1, 1, 1, 1, 1, 1}},
782	/* Just too many unreported, two modifiers */
783	{{4, 9, 11, 12, 16, 18, 20, 0xe2, 0xe4, 0}, {0}, {20},
784	{1, 1, 1, 1, 1, 1}},
785	/* Just too many depressed, no modifiers */
786	{{0}, {7, 20, 22, 25, 27, 29, 34, 0}, {0}, {1, 1, 1, 1, 1, 1}},
787	/* Just too many depressed, two modifiers */
788	{{0}, {7, 20, 22, 25, 27, 29, 34, 0xe3, 0xe5, 0}, {40},
789	{1, 1, 1, 1, 1, 1}},
790	/* Too many unreported and depressed, no overlap, no modifiers */
791	{{5, 10, 12, 13, 0}, {8, 9, 21, 0}, {0}, {1, 1, 1, 1, 1, 1}},
792	/* Eight unreported and depressed total, one overlap, no modifiers */
793	{{5, 10, 12, 13, 0}, {8, 10, 21, 22, 0}, {0}, {1, 1, 1, 1, 1, 1}},
794	/* Seven unreported and depressed total, one overlap, no modifiers */
795	{{5, 10, 12, 13, 0}, {8, 10, 21, 0}, {0}, {5, 8, 10, 12, 13, 21}},
796	/* Too many unreported and depressed, no overlap, two modifiers */
797	{{5, 10, 12, 13, 0xe2, 0}, {8, 9, 21, 0xe4, 0}, {20},
798	{1, 1, 1, 1, 1, 1}},
799	/* Eight unreported and depressed total, one overlap, two modifiers */
800	{{5, 10, 12, 13, 0xe1, 0}, {8, 10, 21, 22, 0xe2, 0}, {6},
801	{1, 1, 1, 1, 1, 1}},
802	/* Seven unreported and depressed total, one overlap, two modifiers */
803	{{5, 10, 12, 13, 0xe2, 0}, {8, 10, 21, 0xe3, 0}, {12},
804	{5, 8, 10, 12, 13, 21}}
805	};
806
807	/** Test case for usbHidFillReport() */
808	class testUsbHidFillReport
809	{
810	USBHIDK_REPORT mReport;
811	uint8_t mabUnreportedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
812	uint8_t mabDepressedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
813	const uint8_t (*mTests)[4][10];
814
815	void doTest(unsigned cTest, const uint8_t *paiUnreportedKeys,
816	const uint8_t *paiDepressedKeys, uint8_t aExpShiftState,
817	const uint8_t *pabExpKeys)
818	{
819	RT_ZERO(mReport);
820	RT_ZERO(mabUnreportedKeys);
821	RT_ZERO(mabDepressedKeys);
822	for (unsigned i = 0; paiUnreportedKeys[i] != 0; ++i)
823	mabUnreportedKeys[paiUnreportedKeys[i]] = 1;
824	for (unsigned i = 0; paiDepressedKeys[i] != 0; ++i)
825	mabUnreportedKeys[paiDepressedKeys[i]] = 1;
826	int rc = usbHidFillReport(&mReport, mabUnreportedKeys, mabDepressedKeys);
827	AssertMsgRC(rc, ("test %u\n", cTest));
828	AssertMsg(mReport.ShiftState == aExpShiftState, ("test %u\n", cTest));
829	for (unsigned i = 0; i < RT_ELEMENTS(mReport.aKeys); ++i)
830	AssertMsg(mReport.aKeys[i] == pabExpKeys[i], ("test %u\n", cTest));
831	}
832
833	public:
834	testUsbHidFillReport(void) : mTests(&testUsbHidFillReportData[0])
835	{
836	for (unsigned i = 0; i < RT_ELEMENTS(testUsbHidFillReportData); ++i)
837	doTest(i, mTests[i][0], mTests[i][1], mTests[i][2][0],
838	mTests[i][3]);
839	}
840	};
841
842	static testUsbHidFillReport gsTestUsbHidFillReport;
843	#endif
844
845	/**
846	* Sends a state report to the host if there is a pending URB.
847	*/
848	static int usbHidSendReport(PUSBHID pThis)
849	{
850	PVUSBURB pUrb = usbHidQueueRemoveHead(&pThis->ToHostQueue);
851	if (pUrb)
852	{
853	PUSBHIDK_REPORT pReport = (PUSBHIDK_REPORT)&pUrb->abData[0];
854
855	int again = usbHidFillReport(pReport, pThis->abUnreportedKeys,
856	pThis->abDepressedKeys);
857	if (again)
858	pThis->fHasPendingChanges = true;
859	else
860	pThis->fHasPendingChanges = false;
861	return usbHidCompleteOk(pThis, pUrb, sizeof(*pReport));
862	}
863	else
864	{
865	Log2(("No available URB for USB kbd\n"));
866	pThis->fHasPendingChanges = true;
867	}
868	return VINF_EOF;
869	}
870
871	/**
872	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
873	*/
874	static DECLCALLBACK(void ) usbHidKeyboardQueryInterface(PPDMIBASE pInterface, const char pszIID)
875	{
876	PUSBHID pThis = RT_FROM_MEMBER(pInterface, USBHID, Lun0.IBase);
877	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->Lun0.IBase);
878	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIKEYBOARDPORT, &pThis->Lun0.IPort);
879	return NULL;
880	}
881
882	/**
883	* Keyboard event handler.
884	*
885	* @returns VBox status code.
886	* @param pInterface Pointer to the keyboard port interface (KBDState::Keyboard.IPort).
887	* @param u8KeyCode The keycode.
888	*/
889	static DECLCALLBACK(int) usbHidKeyboardPutEvent(PPDMIKEYBOARDPORT pInterface, uint8_t u8KeyCode)
890	{
891	PUSBHID pThis = RT_FROM_MEMBER(pInterface, USBHID, Lun0.IPort);
892	uint32_t u32Usage = 0;
893	uint8_t u8HidCode;
894	int fKeyDown;
895	bool fHaveEvent = true;
896
897	RTCritSectEnter(&pThis->CritSect);
898
899	pThis->XlatState = ScancodeToHidUsage(pThis->XlatState, u8KeyCode, &u32Usage);
900
901	if (pThis->XlatState == SS_IDLE)
902	{
903	/* The usage code is valid. */
904	fKeyDown = !(u32Usage & 0x80000000);
905	u8HidCode = u32Usage & 0xFF;
906	AssertReturn(u8HidCode <= VBOX_USB_MAX_USAGE_CODE, VERR_INTERNAL_ERROR);
907
908	LogFlowFunc(("key %s: 0x%x->0x%x\n",
909	fKeyDown ? "down" : "up", u8KeyCode, u8HidCode));
910
911	if (fKeyDown)
912	{
913	/* Due to host key repeat, we can get key events for keys which are
914	* already depressed. */
915	if (!pThis->abDepressedKeys[u8HidCode])
916	pThis->abUnreportedKeys[u8HidCode] = 1;
917	else
918	fHaveEvent = false;
919	pThis->abDepressedKeys[u8HidCode] = 1;
920	}
921	else
922	{
923	/* For stupid Korean keyboards, we have to fake a key up/down sequence
924	* because they only send break codes for Hangul/Hanja keys.
925	*/
926	if (u8HidCode == 0x90 \|\| u8HidCode == 0x91)
927	pThis->abUnreportedKeys[u8HidCode] = 1;
928	pThis->abDepressedKeys[u8HidCode] = 0;
929	}
930
931
932	/* Send a report if the host is already waiting for it. */
933	if (fHaveEvent)
934	usbHidSendReport(pThis);
935	}
936
937	RTCritSectLeave(&pThis->CritSect);
938
939	return VINF_SUCCESS;
940	}
941
942	/**
943	* @copydoc PDMUSBREG::pfnUrbReap
944	*/
945	static DECLCALLBACK(PVUSBURB) usbHidUrbReap(PPDMUSBINS pUsbIns, RTMSINTERVAL cMillies)
946	{
947	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
948	//LogFlow(("usbHidUrbReap/#%u: cMillies=%u\n", pUsbIns->iInstance, cMillies));
949
950	RTCritSectEnter(&pThis->CritSect);
951
952	PVUSBURB pUrb = usbHidQueueRemoveHead(&pThis->DoneQueue);
953	if (!pUrb && cMillies)
954	{
955	/* Wait */
956	pThis->fHaveDoneQueueWaiter = true;
957	RTCritSectLeave(&pThis->CritSect);
958
959	RTSemEventWait(pThis->hEvtDoneQueue, cMillies);
960
961	RTCritSectEnter(&pThis->CritSect);
962	pThis->fHaveDoneQueueWaiter = false;
963
964	pUrb = usbHidQueueRemoveHead(&pThis->DoneQueue);
965	}
966
967	RTCritSectLeave(&pThis->CritSect);
968
969	if (pUrb)
970	Log(("usbHidUrbReap/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
971	return pUrb;
972	}
973
974
975	/**
976	* @copydoc PDMUSBREG::pfnUrbCancel
977	*/
978	static DECLCALLBACK(int) usbHidUrbCancel(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
979	{
980	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
981	LogFlow(("usbHidUrbCancel/#%u: pUrb=%p:%s\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc));
982	RTCritSectEnter(&pThis->CritSect);
983
984	/*
985	* Remove the URB from the to-host queue and move it onto the done queue.
986	*/
987	if (usbHidQueueRemove(&pThis->ToHostQueue, pUrb))
988	usbHidLinkDone(pThis, pUrb);
989
990	RTCritSectLeave(&pThis->CritSect);
991	return VINF_SUCCESS;
992	}
993
994
995	/**
996	* Handles request sent to the inbound (device to host) interrupt pipe. This is
997	* rather different from bulk requests because an interrupt read URB may complete
998	* after arbitrarily long time.
999	*/
1000	static int usbHidHandleIntrDevToHost(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb)
1001	{
1002	/*
1003	* Stall the request if the pipe is halted.
1004	*/
1005	if (RT_UNLIKELY(pEp->fHalted))
1006	return usbHidCompleteStall(pThis, NULL, pUrb, "Halted pipe");
1007
1008	/*
1009	* Deal with the URB according to the state.
1010	*/
1011	switch (pThis->enmState)
1012	{
1013	/*
1014	* We've data left to transfer to the host.
1015	*/
1016	case USBHIDREQSTATE_DATA_TO_HOST:
1017	{
1018	AssertFailed();
1019	Log(("usbHidHandleIntrDevToHost: Entering STATUS\n"));
1020	return usbHidCompleteOk(pThis, pUrb, 0);
1021	}
1022
1023	/*
1024	* Status transfer.
1025	*/
1026	case USBHIDREQSTATE_STATUS:
1027	{
1028	AssertFailed();
1029	Log(("usbHidHandleIntrDevToHost: Entering READY\n"));
1030	pThis->enmState = USBHIDREQSTATE_READY;
1031	return usbHidCompleteOk(pThis, pUrb, 0);
1032	}
1033
1034	case USBHIDREQSTATE_READY:
1035	usbHidQueueAddTail(&pThis->ToHostQueue, pUrb);
1036	/* If device was not set idle, sent the current report right away. */
1037	if (pThis->bIdle != 0 \|\| pThis->fHasPendingChanges)
1038	usbHidSendReport(pThis);
1039	LogFlow(("usbHidHandleIntrDevToHost: Sent report via %p:%s\n", pUrb, pUrb->pszDesc));
1040	return VINF_SUCCESS;
1041
1042	/*
1043	* Bad states, stall.
1044	*/
1045	default:
1046	Log(("usbHidHandleIntrDevToHost: enmState=%d cbData=%#x\n", pThis->enmState, pUrb->cbData));
1047	return usbHidCompleteStall(pThis, NULL, pUrb, "Really bad state (D2H)!");
1048	}
1049	}
1050
1051
1052	/**
1053	* Handles request sent to the default control pipe.
1054	*/
1055	static int usbHidHandleDefaultPipe(PUSBHID pThis, PUSBHIDEP pEp, PVUSBURB pUrb)
1056	{
1057	PVUSBSETUP pSetup = (PVUSBSETUP)&pUrb->abData[0];
1058	LogFlow(("usbHidHandleDefaultPipe: cbData=%d\n", pUrb->cbData));
1059
1060	AssertReturn(pUrb->cbData >= sizeof(*pSetup), VERR_VUSB_FAILED_TO_QUEUE_URB);
1061
1062	if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_STANDARD)
1063	{
1064	switch (pSetup->bRequest)
1065	{
1066	case VUSB_REQ_GET_DESCRIPTOR:
1067	{
1068	switch (pSetup->bmRequestType)
1069	{
1070	case VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1071	{
1072	switch (pSetup->wValue >> 8)
1073	{
1074	case VUSB_DT_STRING:
1075	Log(("usbHid: GET_DESCRIPTOR DT_STRING wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1076	break;
1077	default:
1078	Log(("usbHid: GET_DESCRIPTOR, huh? wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1079	break;
1080	}
1081	break;
1082	}
1083
1084	case VUSB_TO_INTERFACE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1085	{
1086	switch (pSetup->wValue >> 8)
1087	{
1088	case DT_IF_HID_DESCRIPTOR:
1089	{
1090	uint32_t cbCopy;
1091
1092	/* Returned data is written after the setup message. */
1093	cbCopy = pUrb->cbData - sizeof(*pSetup);
1094	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbHidIfHidDesc));
1095	Log(("usbHidKbd: GET_DESCRIPTOR DT_IF_HID_DESCRIPTOR wValue=%#x wIndex=%#x cbCopy=%#x\n", pSetup->wValue, pSetup->wIndex, cbCopy));
1096	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbHidIfHidDesc, cbCopy);
1097	return usbHidCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
1098	}
1099
1100	case DT_IF_HID_REPORT:
1101	{
1102	uint32_t cbCopy;
1103
1104	/* Returned data is written after the setup message. */
1105	cbCopy = pUrb->cbData - sizeof(*pSetup);
1106	cbCopy = RT_MIN(cbCopy, sizeof(g_UsbHidReportDesc));
1107	Log(("usbHid: GET_DESCRIPTOR DT_IF_HID_REPORT wValue=%#x wIndex=%#x cbCopy=%#x\n", pSetup->wValue, pSetup->wIndex, cbCopy));
1108	memcpy(&pUrb->abData[sizeof(*pSetup)], &g_UsbHidReportDesc, cbCopy);
1109	return usbHidCompleteOk(pThis, pUrb, cbCopy + sizeof(*pSetup));
1110	}
1111
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	default:
1120	Log(("usbHid: Bad GET_DESCRIPTOR req: bmRequestType=%#x\n", pSetup->bmRequestType));
1121	return usbHidCompleteStall(pThis, pEp, pUrb, "Bad GET_DESCRIPTOR");
1122	}
1123	break;
1124	}
1125
1126	case VUSB_REQ_GET_STATUS:
1127	{
1128	uint16_t wRet = 0;
1129
1130	if (pSetup->wLength != 2)
1131	{
1132	Log(("usbHid: Bad GET_STATUS req: wLength=%#x\n", pSetup->wLength));
1133	break;
1134	}
1135	Assert(pSetup->wValue == 0);
1136	switch (pSetup->bmRequestType)
1137	{
1138	case VUSB_TO_DEVICE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1139	{
1140	Assert(pSetup->wIndex == 0);
1141	Log(("usbHid: GET_STATUS (device)\n"));
1142	wRet = 0; /* Not self-powered, no remote wakeup. */
1143	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
1144	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
1145	}
1146
1147	case VUSB_TO_INTERFACE \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1148	{
1149	if (pSetup->wIndex == 0)
1150	{
1151	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
1152	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
1153	}
1154	else
1155	{
1156	Log(("usbHid: GET_STATUS (interface) invalid, wIndex=%#x\n", pSetup->wIndex));
1157	}
1158	break;
1159	}
1160
1161	case VUSB_TO_ENDPOINT \| VUSB_REQ_STANDARD \| VUSB_DIR_TO_HOST:
1162	{
1163	if (pSetup->wIndex < RT_ELEMENTS(pThis->aEps))
1164	{
1165	wRet = pThis->aEps[pSetup->wIndex].fHalted ? 1 : 0;
1166	memcpy(&pUrb->abData[sizeof(*pSetup)], &wRet, sizeof(wRet));
1167	return usbHidCompleteOk(pThis, pUrb, sizeof(wRet) + sizeof(*pSetup));
1168	}
1169	else
1170	{
1171	Log(("usbHid: GET_STATUS (endpoint) invalid, wIndex=%#x\n", pSetup->wIndex));
1172	}
1173	break;
1174	}
1175
1176	default:
1177	Log(("usbHid: Bad GET_STATUS req: bmRequestType=%#x\n", pSetup->bmRequestType));
1178	return usbHidCompleteStall(pThis, pEp, pUrb, "Bad GET_STATUS");
1179	}
1180	break;
1181	}
1182
1183	case VUSB_REQ_CLEAR_FEATURE:
1184	break;
1185	}
1186
1187	/** @todo implement this. */
1188	Log(("usbHid: Implement standard request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1189	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1190
1191	usbHidCompleteStall(pThis, pEp, pUrb, "TODO: standard request stuff");
1192	}
1193	else if ((pSetup->bmRequestType & VUSB_REQ_MASK) == VUSB_REQ_CLASS)
1194	{
1195	switch (pSetup->bRequest)
1196	{
1197	case HID_REQ_SET_IDLE:
1198	{
1199	switch (pSetup->bmRequestType)
1200	{
1201	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_DEVICE:
1202	{
1203	Log(("usbHid: SET_IDLE wValue=%#x wIndex=%#x\n", pSetup->wValue, pSetup->wIndex));
1204	pThis->bIdle = pSetup->wValue >> 8;
1205	/* Consider 24ms to mean zero for keyboards (see IOUSBHIDDriver) */
1206	if (pThis->bIdle == 6) pThis->bIdle = 0;
1207	return usbHidCompleteOk(pThis, pUrb, 0);
1208	}
1209	break;
1210	}
1211	break;
1212	}
1213	case HID_REQ_GET_IDLE:
1214	{
1215	switch (pSetup->bmRequestType)
1216	{
1217	case VUSB_TO_INTERFACE \| VUSB_REQ_CLASS \| VUSB_DIR_TO_HOST:
1218	{
1219	Log(("usbHid: GET_IDLE wValue=%#x wIndex=%#x, returning %#x\n", pSetup->wValue, pSetup->wIndex, pThis->bIdle));
1220	pUrb->abData[sizeof(*pSetup)] = pThis->bIdle;
1221	return usbHidCompleteOk(pThis, pUrb, 1);
1222	}
1223	break;
1224	}
1225	break;
1226	}
1227	}
1228	Log(("usbHid: Unimplemented class request: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1229	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1230
1231	usbHidCompleteStall(pThis, pEp, pUrb, "TODO: class request stuff");
1232	}
1233	else
1234	{
1235	Log(("usbHid: Unknown control msg: bmRequestType=%#x bRequest=%#x wValue=%#x wIndex=%#x wLength=%#x\n",
1236	pSetup->bmRequestType, pSetup->bRequest, pSetup->wValue, pSetup->wIndex, pSetup->wLength));
1237	return usbHidCompleteStall(pThis, pEp, pUrb, "Unknown control msg");
1238	}
1239
1240	return VINF_SUCCESS;
1241	}
1242
1243
1244	/**
1245	* @copydoc PDMUSBREG::pfnUrbQueue
1246	*/
1247	static DECLCALLBACK(int) usbHidQueue(PPDMUSBINS pUsbIns, PVUSBURB pUrb)
1248	{
1249	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1250	LogFlow(("usbHidQueue/#%u: pUrb=%p:%s EndPt=%#x\n", pUsbIns->iInstance, pUrb, pUrb->pszDesc, pUrb->EndPt));
1251	RTCritSectEnter(&pThis->CritSect);
1252
1253	/*
1254	* Parse on a per end-point basis.
1255	*/
1256	int rc;
1257	switch (pUrb->EndPt)
1258	{
1259	case 0:
1260	rc = usbHidHandleDefaultPipe(pThis, &pThis->aEps[0], pUrb);
1261	break;
1262
1263	case 0x81:
1264	AssertFailed();
1265	case 0x01:
1266	rc = usbHidHandleIntrDevToHost(pThis, &pThis->aEps[1], pUrb);
1267	break;
1268
1269	default:
1270	AssertMsgFailed(("EndPt=%d\n", pUrb->EndPt));
1271	rc = VERR_VUSB_FAILED_TO_QUEUE_URB;
1272	break;
1273	}
1274
1275	RTCritSectLeave(&pThis->CritSect);
1276	return rc;
1277	}
1278
1279
1280	/**
1281	* @copydoc PDMUSBREG::pfnUsbClearHaltedEndpoint
1282	*/
1283	static DECLCALLBACK(int) usbHidUsbClearHaltedEndpoint(PPDMUSBINS pUsbIns, unsigned uEndpoint)
1284	{
1285	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1286	LogFlow(("usbHidUsbClearHaltedEndpoint/#%u: uEndpoint=%#x\n", pUsbIns->iInstance, uEndpoint));
1287
1288	if ((uEndpoint & ~0x80) < RT_ELEMENTS(pThis->aEps))
1289	{
1290	RTCritSectEnter(&pThis->CritSect);
1291	pThis->aEps[(uEndpoint & ~0x80)].fHalted = false;
1292	RTCritSectLeave(&pThis->CritSect);
1293	}
1294
1295	return VINF_SUCCESS;
1296	}
1297
1298
1299	/**
1300	* @copydoc PDMUSBREG::pfnUsbSetInterface
1301	*/
1302	static DECLCALLBACK(int) usbHidUsbSetInterface(PPDMUSBINS pUsbIns, uint8_t bInterfaceNumber, uint8_t bAlternateSetting)
1303	{
1304	LogFlow(("usbHidUsbSetInterface/#%u: bInterfaceNumber=%u bAlternateSetting=%u\n", pUsbIns->iInstance, bInterfaceNumber, bAlternateSetting));
1305	Assert(bAlternateSetting == 0);
1306	return VINF_SUCCESS;
1307	}
1308
1309
1310	/**
1311	* @copydoc PDMUSBREG::pfnUsbSetConfiguration
1312	*/
1313	static DECLCALLBACK(int) usbHidUsbSetConfiguration(PPDMUSBINS pUsbIns, uint8_t bConfigurationValue,
1314	const void pvOldCfgDesc, const void pvOldIfState, const void *pvNewCfgDesc)
1315	{
1316	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1317	LogFlow(("usbHidUsbSetConfiguration/#%u: bConfigurationValue=%u\n", pUsbIns->iInstance, bConfigurationValue));
1318	Assert(bConfigurationValue == 1);
1319	RTCritSectEnter(&pThis->CritSect);
1320
1321	/*
1322	* If the same config is applied more than once, it's a kind of reset.
1323	*/
1324	if (pThis->bConfigurationValue == bConfigurationValue)
1325	usbHidResetWorker(pThis, NULL, true /fSetConfig/); /** @todo figure out the exact difference */
1326	pThis->bConfigurationValue = bConfigurationValue;
1327
1328	/*
1329	* Tell the other end that the keyboard is now enabled and wants
1330	* to receive keystrokes.
1331	*/
1332	pThis->Lun0.pDrv->pfnSetActive(pThis->Lun0.pDrv, true);
1333
1334	RTCritSectLeave(&pThis->CritSect);
1335	return VINF_SUCCESS;
1336	}
1337
1338
1339	/**
1340	* @copydoc PDMUSBREG::pfnUsbGetDescriptorCache
1341	*/
1342	static DECLCALLBACK(PCPDMUSBDESCCACHE) usbHidUsbGetDescriptorCache(PPDMUSBINS pUsbIns)
1343	{
1344	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1345	LogFlow(("usbHidUsbGetDescriptorCache/#%u:\n", pUsbIns->iInstance));
1346	return &g_UsbHidDescCache;
1347	}
1348
1349
1350	/**
1351	* @copydoc PDMUSBREG::pfnUsbReset
1352	*/
1353	static DECLCALLBACK(int) usbHidUsbReset(PPDMUSBINS pUsbIns, bool fResetOnLinux)
1354	{
1355	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1356	LogFlow(("usbHidUsbReset/#%u:\n", pUsbIns->iInstance));
1357	RTCritSectEnter(&pThis->CritSect);
1358
1359	int rc = usbHidResetWorker(pThis, NULL, false /fSetConfig/);
1360
1361	RTCritSectLeave(&pThis->CritSect);
1362	return rc;
1363	}
1364
1365
1366	/**
1367	* @copydoc PDMUSBREG::pfnDestruct
1368	*/
1369	static void usbHidDestruct(PPDMUSBINS pUsbIns)
1370	{
1371	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1372	LogFlow(("usbHidDestruct/#%u:\n", pUsbIns->iInstance));
1373
1374	if (RTCritSectIsInitialized(&pThis->CritSect))
1375	{
1376	/* Let whoever runs in this critical section complete. */
1377	RTCritSectEnter(&pThis->CritSect);
1378	RTCritSectLeave(&pThis->CritSect);
1379	RTCritSectDelete(&pThis->CritSect);
1380	}
1381
1382	if (pThis->hEvtDoneQueue != NIL_RTSEMEVENT)
1383	{
1384	RTSemEventDestroy(pThis->hEvtDoneQueue);
1385	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1386	}
1387	}
1388
1389
1390	/**
1391	* @copydoc PDMUSBREG::pfnConstruct
1392	*/
1393	static DECLCALLBACK(int) usbHidConstruct(PPDMUSBINS pUsbIns, int iInstance, PCFGMNODE pCfg, PCFGMNODE pCfgGlobal)
1394	{
1395	PUSBHID pThis = PDMINS_2_DATA(pUsbIns, PUSBHID);
1396	Log(("usbHidConstruct/#%u:\n", iInstance));
1397
1398	/*
1399	* Perform the basic structure initialization first so the destructor
1400	* will not misbehave.
1401	*/
1402	pThis->pUsbIns = pUsbIns;
1403	pThis->hEvtDoneQueue = NIL_RTSEMEVENT;
1404	pThis->XlatState = SS_IDLE;
1405	usbHidQueueInit(&pThis->ToHostQueue);
1406	usbHidQueueInit(&pThis->DoneQueue);
1407
1408	int rc = RTCritSectInit(&pThis->CritSect);
1409	AssertRCReturn(rc, rc);
1410
1411	rc = RTSemEventCreate(&pThis->hEvtDoneQueue);
1412	AssertRCReturn(rc, rc);
1413
1414	/*
1415	* Validate and read the configuration.
1416	*/
1417	rc = CFGMR3ValidateConfig(pCfg, "/", "", "", "UsbHid", iInstance);
1418	if (RT_FAILURE(rc))
1419	return rc;
1420
1421	pThis->Lun0.IBase.pfnQueryInterface = usbHidKeyboardQueryInterface;
1422	pThis->Lun0.IPort.pfnPutEvent = usbHidKeyboardPutEvent;
1423
1424	/*
1425	* Attach the keyboard driver.
1426	*/
1427	rc = PDMUsbHlpDriverAttach(pUsbIns, 0 /iLun/, &pThis->Lun0.IBase, &pThis->Lun0.pDrvBase, "Keyboard Port");
1428	if (RT_FAILURE(rc))
1429	return PDMUsbHlpVMSetError(pUsbIns, rc, RT_SRC_POS, N_("HID failed to attach keyboard driver"));
1430
1431	pThis->Lun0.pDrv = PDMIBASE_QUERY_INTERFACE(pThis->Lun0.pDrvBase, PDMIKEYBOARDCONNECTOR);
1432	if (!pThis->Lun0.pDrv)
1433	return PDMUsbHlpVMSetError(pUsbIns, VERR_PDM_MISSING_INTERFACE, RT_SRC_POS, N_("HID failed to query keyboard interface"));
1434
1435	return VINF_SUCCESS;
1436	}
1437
1438
1439	/**
1440	* The USB Human Interface Device (HID) Keyboard registration record.
1441	*/
1442	const PDMUSBREG g_UsbHidKbd =
1443	{
1444	/* u32Version */
1445	PDM_USBREG_VERSION,
1446	/* szName */
1447	"HidKeyboard",
1448	/* pszDescription */
1449	"USB HID Keyboard.",
1450	/* fFlags */
1451	0,
1452	/* cMaxInstances */
1453	~0,
1454	/* cbInstance */
1455	sizeof(USBHID),
1456	/* pfnConstruct */
1457	usbHidConstruct,
1458	/* pfnDestruct */
1459	usbHidDestruct,
1460	/* pfnVMInitComplete */
1461	NULL,
1462	/* pfnVMPowerOn */
1463	NULL,
1464	/* pfnVMReset */
1465	NULL,
1466	/* pfnVMSuspend */
1467	NULL,
1468	/* pfnVMResume */
1469	NULL,
1470	/* pfnVMPowerOff */
1471	NULL,
1472	/* pfnHotPlugged */
1473	NULL,
1474	/* pfnHotUnplugged */
1475	NULL,
1476	/* pfnDriverAttach */
1477	NULL,
1478	/* pfnDriverDetach */
1479	NULL,
1480	/* pfnQueryInterface */
1481	NULL,
1482	/* pfnUsbReset */
1483	usbHidUsbReset,
1484	/* pfnUsbGetDescriptorCache */
1485	usbHidUsbGetDescriptorCache,
1486	/* pfnUsbSetConfiguration */
1487	usbHidUsbSetConfiguration,
1488	/* pfnUsbSetInterface */
1489	usbHidUsbSetInterface,
1490	/* pfnUsbClearHaltedEndpoint */
1491	usbHidUsbClearHaltedEndpoint,
1492	/* pfnUrbNew */
1493	NULL/usbHidUrbNew/,
1494	/* pfnUrbQueue */
1495	usbHidQueue,
1496	/* pfnUrbCancel */
1497	usbHidUrbCancel,
1498	/* pfnUrbReap */
1499	usbHidUrbReap,
1500	/* u32TheEnd */
1501	PDM_USBREG_VERSION
1502	};

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source: vbox/trunk/src/VBox/Devices/Input/UsbKbd.cpp@ 40246

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