DevPS2.h@ 96407

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1	/* $Id: DevPS2.h 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* PS/2 devices - Internal header file.
4	*/
5
6	/*
7	* Copyright (C) 2007-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28	#ifndef VBOX_INCLUDED_SRC_Input_DevPS2_h
29	#define VBOX_INCLUDED_SRC_Input_DevPS2_h
30	#ifndef RT_WITHOUT_PRAGMA_ONCE
31	# pragma once
32	#endif
33
34	/** @defgroup grp_devps2 PS/2 Device
35	* @{
36	*/
37
38	/** Pointer to the shared keyboard (PS/2) controller / device state. */
39	typedef struct KBDSTATE *PKBDSTATE;
40
41
42	/** @name PS/2 Input Queue Primitive
43	* @{ */
44	typedef struct PS2QHDR
45	{
46	uint32_t volatile rpos;
47	uint32_t volatile wpos;
48	uint32_t volatile cUsed;
49	uint32_t uPadding;
50	R3PTRTYPE(const char *) pszDescR3;
51	} PS2QHDR;
52	/** Pointer to a queue header. */
53	typedef PS2QHDR *PPS2QHDR;
54
55	/** Define a simple PS/2 input device queue. */
56	#define DEF_PS2Q_TYPE(name, size) \
57	typedef struct { \
58	PS2QHDR Hdr; \
59	uint8_t abQueue[size]; \
60	} name
61
62	void PS2CmnClearQueue(PPS2QHDR pQHdr, size_t cElements);
63	void PS2CmnInsertQueue(PPS2QHDR pQHdr, size_t cElements, uint8_t *pbElements, uint8_t bValue);
64	int PS2CmnRemoveQueue(PPS2QHDR pQHdr, size_t cElements, uint8_t const pbElements, uint8_t pbValue);
65	void PS2CmnR3SaveQueue(PCPDMDEVHLPR3 pHlp, PSSMHANDLE pSSM, PPS2QHDR pQHdr, size_t cElements, uint8_t const *pbElements);
66	int PS2CmnR3LoadQueue(PCPDMDEVHLPR3 pHlp, PSSMHANDLE pSSM, PPS2QHDR pQHdr, size_t cElements, uint8_t *pbElements);
67
68	#define PS2Q_CLEAR(a_pQueue) \
69	PS2CmnClearQueue(&(a_pQueue)->Hdr, RT_ELEMENTS((a_pQueue)->abQueue))
70	#define PS2Q_INSERT(a_pQueue, a_bValue) \
71	PS2CmnInsertQueue(&(a_pQueue)->Hdr, RT_ELEMENTS((a_pQueue)->abQueue), (a_pQueue)->abQueue, (a_bValue))
72	#define PS2Q_REMOVE(a_pQueue, a_pbValue) \
73	PS2CmnRemoveQueue(&(a_pQueue)->Hdr, RT_ELEMENTS((a_pQueue)->abQueue), (a_pQueue)->abQueue, (a_pbValue))
74	#define PS2Q_SAVE(a_pHlp, a_pSSM, a_pQueue) \
75	PS2CmnR3SaveQueue((a_pHlp), (a_pSSM), &(a_pQueue)->Hdr, RT_ELEMENTS((a_pQueue)->abQueue), (a_pQueue)->abQueue)
76	#define PS2Q_LOAD(a_pHlp, a_pSSM, a_pQueue) \
77	PS2CmnR3LoadQueue((a_pHlp), (a_pSSM), &(a_pQueue)->Hdr, RT_ELEMENTS((a_pQueue)->abQueue), (a_pQueue)->abQueue)
78	#define PS2Q_SIZE(a_pQueue) RT_ELEMENTS((a_pQueue)->abQueue)
79	#define PS2Q_COUNT(a_pQueue) ((a_pQueue)->Hdr.cUsed)
80	#define PS2Q_RD_POS(a_pQueue) ((a_pQueue)->Hdr.rpos)
81	#define PS2Q_WR_POS(a_pQueue) ((a_pQueue)->Hdr.wpos)
82	/** @} */
83
84
85	/** @defgroup grp_devps2k DevPS2K - Keyboard
86	* @{
87	*/
88
89	/** @name HID modifier range.
90	* @{ */
91	#define HID_MODIFIER_FIRST 0xE0
92	#define HID_MODIFIER_LAST 0xE8
93	/** @} */
94
95	/** @name USB HID additional constants
96	* @{ */
97	/** The highest USB usage code reported by VirtualBox. */
98	#define VBOX_USB_MAX_USAGE_CODE 0xE7
99	/** The size of an array needed to store all USB usage codes */
100	#define VBOX_USB_USAGE_ARRAY_SIZE (VBOX_USB_MAX_USAGE_CODE + 1)
101	/** @} */
102
103	/* Internal keyboard queue sizes. The input queue doesn't need to be
104	* extra huge and the command queue only needs to handle a few bytes.
105	*/
106	#define KBD_KEY_QUEUE_SIZE 64
107	#define KBD_CMD_QUEUE_SIZE 4
108
109	DEF_PS2Q_TYPE(KbdKeyQ, KBD_KEY_QUEUE_SIZE);
110	DEF_PS2Q_TYPE(KbdCmdQ, KBD_CMD_QUEUE_SIZE);
111
112	/** Typematic state. */
113	typedef enum {
114	KBD_TMS_IDLE = 0, /* No typematic key active. */
115	KBD_TMS_DELAY = 1, /* In the initial delay period. */
116	KBD_TMS_REPEAT = 2, /* Key repeating at set rate. */
117	KBD_TMS_32BIT_HACK = 0x7fffffff
118	} tmatic_state_t;
119
120
121	/**
122	* The shared PS/2 keyboard instance data.
123	*/
124	typedef struct PS2K
125	{
126	/** Set if keyboard is enabled ('scans' for input). */
127	bool fScanning;
128	/** Set NumLock is on. */
129	bool fNumLockOn;
130	/** Selected scan set. */
131	uint8_t u8ScanSet;
132	/** Modifier key state. */
133	uint8_t u8Modifiers;
134	/** Currently processed command (if any). */
135	uint8_t u8CurrCmd;
136	/** Status indicator (LED) state. */
137	uint8_t u8LEDs;
138	/** Selected typematic delay/rate. */
139	uint8_t u8TypematicCfg;
140	uint8_t bAlignment1;
141	/** Usage code of current typematic key, if any. */
142	uint32_t u32TypematicKey;
143	/** Current typematic repeat state. */
144	tmatic_state_t enmTypematicState;
145	/** Buffer holding scan codes to be sent to the host. */
146	KbdKeyQ keyQ;
147	/** Command response queue (priority). */
148	KbdCmdQ cmdQ;
149	/** Currently depressed keys. */
150	uint8_t abDepressedKeys[VBOX_USB_USAGE_ARRAY_SIZE];
151	/** Typematic delay in milliseconds. */
152	uint32_t uTypematicDelay;
153	/** Typematic repeat period in milliseconds. */
154	uint32_t uTypematicRepeat;
155	/** Set if the throttle delay is currently active. */
156	bool fThrottleActive;
157	/** Set if the input rate should be throttled. */
158	bool fThrottleEnabled;
159	/** Set if the serial line is disabled on the KBC. */
160	bool fLineDisabled;
161	uint8_t abAlignment2[1];
162
163	/** Command delay timer. */
164	TMTIMERHANDLE hKbdDelayTimer;
165	/** Typematic timer. */
166	TMTIMERHANDLE hKbdTypematicTimer;
167	/** Input throttle timer. */
168	TMTIMERHANDLE hThrottleTimer;
169	} PS2K;
170	/** Pointer to the shared PS/2 keyboard instance data. */
171	typedef PS2K *PPS2K;
172
173
174	/**
175	* The PS/2 keyboard instance data for ring-3.
176	*/
177	typedef struct PS2KR3
178	{
179	/** The device instance.
180	* @note Only for getting our bearings in interface methods. */
181	PPDMDEVINSR3 pDevIns;
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	} Keyboard;
201	} PS2KR3;
202	/** Pointer to the PS/2 keyboard instance data for ring-3. */
203	typedef PS2KR3 *PPS2KR3;
204
205
206	int PS2KByteToKbd(PPDMDEVINS pDevIns, PPS2K pThis, uint8_t cmd);
207	int PS2KByteFromKbd(PPDMDEVINS pDevIns, PPS2K pThis, uint8_t *pVal);
208
209	void PS2KLineDisable(PPS2K pThis);
210	void PS2KLineEnable(PPS2K pThis);
211
212	int PS2KR3Construct(PPDMDEVINS pDevIns, PPS2K pThis, PPS2KR3 pThisCC, PCFGMNODE pCfg);
213	int PS2KR3Attach(PPDMDEVINS pDevIns, PPS2KR3 pThisCC, unsigned iLUN, uint32_t fFlags);
214	void PS2KR3Reset(PPDMDEVINS pDevIns, PPS2K pThis, PPS2KR3 pThisCC);
215	void PS2KR3SaveState(PPDMDEVINS pDevIns, PPS2K pThis, PSSMHANDLE pSSM);
216	int PS2KR3LoadState(PPDMDEVINS pDevIns, PPS2K pThis, PSSMHANDLE pSSM, uint32_t uVersion);
217	int PS2KR3LoadDone(PPDMDEVINS pDevIns, PPS2K pThis, PPS2KR3 pThisCC);
218	/** @} */
219
220
221	/** @defgroup grp_devps2m DevPS2M - Auxiliary Device (Mouse)
222	* @{
223	*/
224
225	/* Internal mouse queue sizes. The input queue is relatively large,
226	* but the command queue only needs to handle a few bytes.
227	*/
228	#define AUX_EVT_QUEUE_SIZE 256
229	#define AUX_CMD_QUEUE_SIZE 8
230
231	DEF_PS2Q_TYPE(AuxEvtQ, AUX_EVT_QUEUE_SIZE);
232	DEF_PS2Q_TYPE(AuxCmdQ, AUX_CMD_QUEUE_SIZE);
233
234	/** Auxiliary device special modes of operation. */
235	typedef enum {
236	AUX_MODE_STD, /* Standard operation. */
237	AUX_MODE_RESET, /* Currently in reset. */
238	AUX_MODE_WRAP /* Wrap mode (echoing input). */
239	} PS2M_MODE;
240
241	/** Auxiliary device operational state. */
242	typedef enum {
243	AUX_STATE_RATE_ERR = RT_BIT(0), /* Invalid rate received. */
244	AUX_STATE_RES_ERR = RT_BIT(1), /* Invalid resolution received. */
245	AUX_STATE_SCALING = RT_BIT(4), /* 2:1 scaling in effect. */
246	AUX_STATE_ENABLED = RT_BIT(5), /* Reporting enabled in stream mode. */
247	AUX_STATE_REMOTE = RT_BIT(6) /* Remote mode (reports on request). */
248	} PS2M_STATE;
249
250	/** Externally visible state bits. */
251	#define AUX_STATE_EXTERNAL (AUX_STATE_SCALING \| AUX_STATE_ENABLED \| AUX_STATE_REMOTE)
252
253	/** Protocols supported by the PS/2 mouse. */
254	typedef enum {
255	PS2M_PROTO_PS2STD = 0, /* Standard PS/2 mouse protocol. */
256	PS2M_PROTO_IMPS2 = 3, /* IntelliMouse PS/2 protocol. */
257	PS2M_PROTO_IMEX = 4, /* IntelliMouse Explorer protocol. */
258	PS2M_PROTO_IMEX_HORZ = 5 /* IntelliMouse Explorer with horizontal reports. */
259	} PS2M_PROTO;
260
261	/** Protocol selection 'knock' states. */
262	typedef enum {
263	PS2M_KNOCK_INITIAL,
264	PS2M_KNOCK_1ST,
265	PS2M_KNOCK_IMPS2_2ND,
266	PS2M_KNOCK_IMEX_2ND,
267	PS2M_KNOCK_IMEX_HORZ_2ND
268	} PS2M_KNOCK_STATE;
269
270	/**
271	* The shared PS/2 auxiliary device instance data.
272	*/
273	typedef struct PS2M
274	{
275	/** Operational state. */
276	uint8_t u8State;
277	/** Configured sampling rate. */
278	uint8_t u8SampleRate;
279	/** Configured resolution. */
280	uint8_t u8Resolution;
281	/** Currently processed command (if any). */
282	uint8_t u8CurrCmd;
283	/** Set if the serial line is disabled on the KBC. */
284	bool fLineDisabled;
285	/** Set if the throttle delay is active. */
286	bool fThrottleActive;
287	/** Set if the throttle delay is active. */
288	bool fDelayReset;
289	/** Operational mode. */
290	PS2M_MODE enmMode;
291	/** Currently used protocol. */
292	PS2M_PROTO enmProtocol;
293	/** Currently used protocol. */
294	PS2M_KNOCK_STATE enmKnockState;
295	/** Buffer holding mouse events to be sent to the host. */
296	AuxEvtQ evtQ;
297	/** Command response queue (priority). */
298	AuxCmdQ cmdQ;
299	/** Accumulated horizontal movement. */
300	int32_t iAccumX;
301	/** Accumulated vertical movement. */
302	int32_t iAccumY;
303	/** Accumulated Z axis (vertical scroll) movement. */
304	int32_t iAccumZ;
305	/** Accumulated W axis (horizontal scroll) movement. */
306	int32_t iAccumW;
307	/** Accumulated button presses. */
308	uint32_t fAccumB;
309	/** Instantaneous button data. */
310	uint32_t fCurrB;
311	/** Button state last sent to the guest. */
312	uint32_t fReportedB;
313	/** Throttling delay in milliseconds. */
314	uint32_t uThrottleDelay;
315
316	/** Command delay timer. */
317	TMTIMERHANDLE hDelayTimer;
318	/** Interrupt throttling timer. */
319	TMTIMERHANDLE hThrottleTimer;
320	} PS2M;
321	/** Pointer to the shared PS/2 auxiliary device instance data. */
322	typedef PS2M *PPS2M;
323
324	/**
325	* The PS/2 auxiliary device instance data for ring-3.
326	*/
327	typedef struct PS2MR3
328	{
329	/** The device instance.
330	* @note Only for getting our bearings in interface methods. */
331	PPDMDEVINSR3 pDevIns;
332
333	/**
334	* Mouse port - LUN#1.
335	*
336	* @implements PDMIBASE
337	* @implements PDMIMOUSEPORT
338	*/
339	struct
340	{
341	/** The base interface for the mouse port. */
342	PDMIBASE IBase;
343	/** The keyboard port base interface. */
344	PDMIMOUSEPORT IPort;
345
346	/** The base interface of the attached mouse driver. */
347	R3PTRTYPE(PPDMIBASE) pDrvBase;
348	/** The keyboard interface of the attached mouse driver. */
349	R3PTRTYPE(PPDMIMOUSECONNECTOR) pDrv;
350	} Mouse;
351	} PS2MR3;
352	/** Pointer to the PS/2 auxiliary device instance data for ring-3. */
353	typedef PS2MR3 *PPS2MR3;
354
355	int PS2MByteToAux(PPDMDEVINS pDevIns, PPS2M pThis, uint8_t cmd);
356	int PS2MByteFromAux(PPS2M pThis, uint8_t *pVal);
357
358	void PS2MLineDisable(PPS2M pThis);
359	void PS2MLineEnable(PPS2M pThis);
360
361	int PS2MR3Construct(PPDMDEVINS pDevIns, PPS2M pThis, PPS2MR3 pThisCC);
362	int PS2MR3Attach(PPDMDEVINS pDevIns, PPS2MR3 pThisCC, unsigned iLUN, uint32_t fFlags);
363	void PS2MR3Reset(PPS2M pThis);
364	void PS2MR3SaveState(PPDMDEVINS pDevIns, PPS2M pThis, PSSMHANDLE pSSM);
365	int PS2MR3LoadState(PPDMDEVINS pDevIns, PPS2M pThis, PPS2MR3 pThisCC, PSSMHANDLE pSSM, uint32_t uVersion);
366	void PS2MR3FixupState(PPS2M pThis, PPS2MR3 pThisCC, uint8_t u8State, uint8_t u8Rate, uint8_t u8Proto);
367	/** @} */
368
369
370	/**
371	* The shared keyboard controller/device state.
372	*
373	* @note We use the default critical section for serialize data access.
374	*/
375	typedef struct KBDSTATE
376	{
377	uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
378	uint8_t status;
379	uint8_t mode;
380	uint8_t dbbout; /* data buffer byte */
381	/* keyboard state */
382	int32_t translate;
383	int32_t xlat_state;
384
385	/** I/O port 60h. */
386	IOMIOPORTHANDLE hIoPortData;
387	/** I/O port 64h. */
388	IOMIOPORTHANDLE hIoPortCmdStatus;
389
390	/** Shared keyboard state (implemented in separate PS2K module). */
391	PS2K Kbd;
392	/** Shared mouse state (implemented in separate PS2M module). */
393	PS2M Aux;
394	} KBDSTATE;
395
396
397	/**
398	* The ring-3 keyboard controller/device state.
399	*/
400	typedef struct KBDSTATER3
401	{
402	/** Keyboard state for ring-3 (implemented in separate PS2K module). */
403	PS2KR3 Kbd;
404	/** Mouse state for ring-3 (implemented in separate PS2M module). */
405	PS2MR3 Aux;
406	} KBDSTATER3;
407	/** Pointer to the keyboard (PS/2) controller / device state for ring-3. */
408	typedef KBDSTATER3 *PKBDSTATER3;
409
410
411	/* Shared keyboard/aux internal interface. */
412	void KBCUpdateInterrupts(PPDMDEVINS pDevIns);
413
414	/** @} */
415
416	#endif /* !VBOX_INCLUDED_SRC_Input_DevPS2_h */
417

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source: vbox/trunk/src/VBox/Devices/Input/DevPS2.h@ 96407

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