BusMouse.cpp@ 50174

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1	/* $Id: BusMouse.cpp 48419 2013-09-10 22:28:34Z vboxsync $ */
2	/** @file
3	* BusMouse - Microsoft Bus (parallel) mouse controller device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 Oracle Corporation
8	*
9	* Permission is hereby granted, free of charge, to any person
10	* obtaining a copy of this software and associated documentation
11	* files (the "Software"), to deal in the Software without
12	* restriction, including without limitation the rights to use,
13	* copy, modify, merge, publish, distribute, sublicense, and/or sell
14	* copies of the Software, and to permit persons to whom the
15	* Software is furnished to do so, subject to the following
16	* conditions:
17	*
18	* The above copyright notice and this permission notice shall be
19	* included in all copies or substantial portions of the Software.
20	*
21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28	* OTHER DEALINGS IN THE SOFTWARE.
29	*/
30
31	/*******************************************************************************
32	* Header Files *
33	*******************************************************************************/
34	#define LOG_GROUP LOG_GROUP_DEV_KBD
35	#include <VBox/vmm/pdmdev.h>
36	#include <VBox/version.h>
37	#include <iprt/assert.h>
38	#include <iprt/uuid.h>
39
40	/** @page pg_busmouse DevBusMouse - Microsoft Bus Mouse Emulation
41	*
42	* The Microsoft Bus Mouse was an early mouse sold by Microsoft, originally
43	* introduced in 1983. The mouse had a D-shaped 9-pin connector which plugged
44	* into a small ISA add-in board.
45	*
46	* The mouse itself was very simple (compared to a serial mouse) and most of the
47	* logic was located on the ISA board. Later, Microsoft sold an InPort mouse,
48	* which was also called a "bus mouse", but used a different interface.
49	*
50	* Microsoft part numbers for the Bus Mouse were 037-099 (100 ppi)
51	* and 037-199 (200 ppi).
52	*
53	* The Bus Mouse adapter included IRQ configuration jumpers (ref. MS article
54	* Q12230). The IRQ could be set to one of 2, 3, 4, 5. The typical setting
55	* would be IRQ 2 for a PC/XT and IRQ 5 for an AT compatible. Because IRQ 5
56	* may conflict with a SoundBlaster or a PCI device, this device defaults to
57	* IRQ 3. Note that IRQ 3 is also used by the COM 2 device, not often needed.
58	*
59	* The ISA adapter was built around an Intel 8255A compatible chip (ref.
60	* MS article Q46369). Once enabled, the adapter raises the configured IRQ
61	* 30 times per second; the rate is not configurable. The interrupts
62	* occur regardless of whether the mouse state has changed or not.
63	*
64	* To function properly, the 8255A must be programmed as follows:
65	* - Port A: Input. Used to read motion deltas and button states.
66	* - Port B: Output. Not used except for mouse detection.
67	* - Port C: Split. Upper bits set as output, used for control purposes.
68	* Lower bits set as input, reflecting IRQ state.
69	*
70	* Detailed information was gleaned from Windows and OS/2 DDK mouse samples.
71	*/
72
73
74	/*******************************************************************************
75	* Defined Constants And Macros *
76	*******************************************************************************/
77	/** The original bus mouse controller is fixed at I/O port 0x23C. */
78	#define BMS_IO_BASE 0x23C
79	#define BMS_IO_SIZE 4
80
81	/** @name Offsets relative to the I/O base.
82	@{ /
83	#define BMS_PORT_DATA 0 /*< 8255 Port A. /
84	#define BMS_PORT_SIG 1 /*< 8255 Port B. /
85	#define BMS_PORT_CTRL 2 /*< 8255 Port C. /
86	#define BMS_PORT_INIT 3 /*< 8255 Control Port. /
87	/** @} */
88
89	/** @name Port C bits (control port).
90	* @{ */
91	#define BMS_CTL_INT_DIS RT_BIT(4) /*< Disable IRQ (else enabled). /
92	#define BMS_CTL_SEL_HIGH RT_BIT(5) /*< Select hi nibble (else lo). /
93	#define BMS_CTL_SEL_Y RT_BIT(6) /*< Select X to read (else Y). /
94	#define BMS_CTL_HOLD RT_BIT(7) /*< Hold counter (else clear). /
95	/** @} */
96
97	/** @name Port A bits (data port).
98	* @{ */
99	#define BMS_DATA_DELTA 0x0F /*< Motion delta in lower nibble. /
100	#define BMS_DATA_B3_UP RT_BIT(5) /*< Button 3 (right) is up. /
101	#define BMS_DATA_B2_UP RT_BIT(6) /*< Button 2 (middle) is up. /
102	#define BMS_DATA_B1_UP RT_BIT(7) /*< Button 1 (left) is up. /
103	/** @} */
104
105	/** Convert IRQ level (2/3/4/5) to a bit in the control register. */
106	#define BMS_IRQ_BIT(a) (1 << (5 - a))
107
108	/** IRQ period, corresponds to approx. 30 Hz. */
109	#define BMS_IRQ_PERIOD_MS 34
110
111	/** Default IRQ setting. */
112	#define BMS_DEFAULT_IRQ 3
113
114	/** The saved state version. */
115	#define BMS_SAVED_STATE_VERSION 1
116
117
118	/*******************************************************************************
119	* Structures and Typedefs *
120	*******************************************************************************/
121	/**
122	* The device state.
123	*/
124	typedef struct MouState
125	{
126	/** @name 8255A state
127	* @{ */
128	uint8_t port_a;
129	uint8_t port_b;
130	uint8_t port_c;
131	uint8_t ctrl_port;
132	uint8_t cnt_held; /*< Counters held for reading. /
133	uint8_t held_dx;
134	uint8_t held_dy;
135	uint8_t irq; /*< The "jumpered" IRQ level. /
136	int32_t irq_toggle_counter;
137	/** Mouse timer handle - HC. */
138	PTMTIMERR3 MouseTimer;
139	/** Timer period in milliseconds. */
140	uint32_t cTimerPeriodMs;
141	/** @} */
142
143	/** @name mouse state
144	* @{ */
145	int32_t disable_counter;
146	uint8_t mouse_enabled;
147	int32_t mouse_dx; /* current values, needed for 'poll' mode */
148	int32_t mouse_dy;
149	uint8_t mouse_buttons;
150	uint8_t mouse_buttons_reported;
151	/** @} */
152
153	/** Pointer to the device instance - RC. */
154	PPDMDEVINSRC pDevInsRC;
155	/** Pointer to the device instance - R3 . */
156	PPDMDEVINSR3 pDevInsR3;
157	/** Pointer to the device instance. */
158	PPDMDEVINSR0 pDevInsR0;
159
160	/**
161	* Mouse port - LUN#0.
162	*
163	* @implements PDMIBASE
164	* @implements PDMIMOUSEPORT
165	*/
166	struct
167	{
168	/** The base interface for the mouse port. */
169	PDMIBASE IBase;
170	/** The mouse port base interface. */
171	PDMIMOUSEPORT IPort;
172
173	/** The base interface of the attached mouse driver. */
174	R3PTRTYPE(PPDMIBASE) pDrvBase;
175	/** The mouse interface of the attached mouse driver. */
176	R3PTRTYPE(PPDMIMOUSECONNECTOR) pDrv;
177	} Mouse;
178	} MouState;
179
180
181
182	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
183
184	# ifdef IN_RING3
185
186	/**
187	* Report a change in status down the driver chain.
188	*
189	* We want to report the mouse as enabled if and only if the guest is "using"
190	* it. That way, other devices (e.g. a PS/2 or USB mouse) can receive mouse
191	* events when the bus mouse is disabled. Enabling interrupts constitutes
192	* enabling the bus mouse. The mouse is considered disabled if interrupts are
193	* disabled for several consecutive mouse timer ticks; this is because the
194	* interrupt handler in the guest typically temporarily disables interrupts and
195	* we do not want to toggle the enabled/disabled state more often than
196	* necessary.
197	*/
198	static void bms_update_downstream_status(MouState *pThis)
199	{
200	PPDMIMOUSECONNECTOR pDrv = pThis->Mouse.pDrv;
201	bool fEnabled = !!pThis->mouse_enabled;
202	pDrv->pfnReportModes(pDrv, fEnabled, false, false);
203	}
204
205	/**
206	* Set the emulated hardware to a known initial state.
207	*/
208	static void bms_reset(MouState *pThis)
209	{
210	/* Clear the device setup. */
211	pThis->port_a = pThis->port_b = 0;
212	pThis->port_c = BMS_CTL_INT_DIS; /* Interrupts disabled. */
213	pThis->ctrl_port = 0x91; /* Default 8255A setup. */
214
215	/* Clear motion/button state. */
216	pThis->cnt_held = false;
217	pThis->mouse_dx = pThis->mouse_dy = 0;
218	pThis->mouse_buttons = 0;
219	pThis->mouse_buttons_reported = 0;
220	pThis->disable_counter = 0;
221	pThis->irq_toggle_counter = 1000;
222
223	if (pThis->mouse_enabled)
224	{
225	pThis->mouse_enabled = false;
226	bms_update_downstream_status(pThis);
227	}
228	}
229
230	/* Process a mouse event coming from the host. */
231	static void bms_mouse_event(MouState *pThis, int dx, int dy, int dz, int dw,
232	int buttons_state)
233	{
234	LogRel3(("%s: dx=%d, dy=%d, dz=%d, dw=%d, buttons_state=0x%x\n",
235	__PRETTY_FUNCTION__, dx, dy, dz, dw, buttons_state));
236
237	/* Only record X/Y movement and buttons. */
238	pThis->mouse_dx += dx;
239	pThis->mouse_dy += dy;
240	pThis->mouse_buttons = buttons_state;
241	}
242
243	static DECLCALLBACK(void) bmsTimerCallback(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
244	{
245	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
246	uint8_t irq_bit;
247
248	/* Toggle the IRQ line if interrupts are enabled. */
249	irq_bit = BMS_IRQ_BIT(pThis->irq);
250
251	if (pThis->port_c & irq_bit)
252	{
253	if (!(pThis->port_c & BMS_CTL_INT_DIS))
254	PDMDevHlpISASetIrq(pThis->CTX_SUFF(pDevIns), pThis->irq, PDM_IRQ_LEVEL_LOW);
255	pThis->port_c &= ~irq_bit;
256	}
257	else
258	{
259	pThis->port_c \|= irq_bit;
260	if (!(pThis->port_c & BMS_CTL_INT_DIS))
261	PDMDevHlpISASetIrq(pThis->CTX_SUFF(pDevIns), pThis->irq, PDM_IRQ_LEVEL_HIGH);
262	}
263
264	/* Handle enabling/disabling of the mouse interface. */
265	if (pThis->port_c & BMS_CTL_INT_DIS)
266	{
267	if (pThis->disable_counter)
268	--pThis->disable_counter;
269
270	if (pThis->disable_counter == 0 && pThis->mouse_enabled)
271	{
272	pThis->mouse_enabled = false;
273	bms_update_downstream_status(pThis);
274	}
275	}
276	else
277	{
278	pThis->disable_counter = 8; /* Re-arm the disable countdown. */
279	if (!pThis->mouse_enabled)
280	{
281	pThis->mouse_enabled = true;
282	bms_update_downstream_status(pThis);
283	}
284	}
285
286	/* Re-arm the timer. */
287	TMTimerSetMillies(pTimer, pThis->cTimerPeriodMs);
288	}
289
290	# endif /* IN_RING3 */
291
292	static void bms_set_reported_buttons(MouState *pThis, unsigned fButtons, unsigned fButtonMask)
293	{
294	pThis->mouse_buttons_reported \|= (fButtons & fButtonMask);
295	pThis->mouse_buttons_reported &= (fButtons \| ~fButtonMask);
296	}
297
298	/* Update the internal state after a write to port C. */
299	static void bms_update_ctrl(MouState *pThis)
300	{
301	int32_t dx, dy;
302
303	/* If the controller is in hold state, transfer data from counters. */
304	if (pThis->port_c & BMS_CTL_HOLD)
305	{
306	if (!pThis->cnt_held)
307	{
308	pThis->cnt_held = true;
309	dx = pThis->mouse_dx < 0 ? RT_MAX(pThis->mouse_dx, -128)
310	: RT_MIN(pThis->mouse_dx, 127);
311	dy = pThis->mouse_dy < 0 ? RT_MAX(pThis->mouse_dy, -128)
312	: RT_MIN(pThis->mouse_dy, 127);
313	pThis->mouse_dx -= dx;
314	pThis->mouse_dy -= dy;
315	bms_set_reported_buttons(pThis, pThis->mouse_buttons & 0x07, 0x07);
316
317	/* Force type conversion. */
318	pThis->held_dx = dx;
319	pThis->held_dy = dy;
320	}
321	}
322	else
323	pThis->cnt_held = false;
324
325	/* Move the appropriate nibble into port A. */
326	if (pThis->cnt_held)
327	{
328	if (pThis->port_c & BMS_CTL_SEL_Y)
329	{
330	if (pThis->port_c & BMS_CTL_SEL_HIGH)
331	pThis->port_a = pThis->held_dy >> 4;
332	else
333	pThis->port_a = pThis->held_dy & 0xF;
334	}
335	else
336	{
337	if (pThis->port_c & BMS_CTL_SEL_HIGH)
338	pThis->port_a = pThis->held_dx >> 4;
339	else
340	pThis->port_a = pThis->held_dx & 0xF;
341	}
342	/* And update the button bits. */
343	pThis->port_a \|= pThis->mouse_buttons & 1 ? 0 : BMS_DATA_B1_UP;
344	pThis->port_a \|= pThis->mouse_buttons & 2 ? 0 : BMS_DATA_B3_UP;
345	pThis->port_a \|= pThis->mouse_buttons & 4 ? 0 : BMS_DATA_B2_UP;
346	}
347	/* Immediately clear the IRQ if necessary. */
348	if (pThis->port_c & BMS_CTL_INT_DIS)
349	{
350	PDMDevHlpISASetIrq(pThis->CTX_SUFF(pDevIns), pThis->irq, PDM_IRQ_LEVEL_LOW);
351	pThis->port_c &= ~(BMS_IRQ_BIT(pThis->irq));
352	}
353	}
354
355	static int bms_write_port(MouState *pThis, uint32_t offPort, uint32_t uValue)
356	{
357	int rc = VINF_SUCCESS;
358
359	LogRel3(("%s: write port %d: 0x%02x\n", __PRETTY_FUNCTION__, offPort, uValue));
360
361	switch (offPort)
362	{
363	case BMS_PORT_SIG:
364	/* Update port B. */
365	pThis->port_b = uValue;
366	break;
367	case BMS_PORT_DATA:
368	/* Do nothing, port A is not writable. */
369	break;
370	case BMS_PORT_INIT:
371	pThis->ctrl_port = uValue;
372	break;
373	case BMS_PORT_CTRL:
374	/* Update the high nibble of port C. */
375	pThis->port_c = (uValue & 0xF0) \| (pThis->port_c & 0x0F);
376	bms_update_ctrl(pThis);
377	break;
378	default:
379	AssertMsgFailed(("invalid port %#x\n", offPort));
380	break;
381	}
382	return rc;
383	}
384
385	static uint32_t bms_read_port(MouState *pThis, uint32_t offPort)
386	{
387	uint32_t uValue;
388
389	switch (offPort)
390	{
391	case BMS_PORT_DATA:
392	/* Read port A. */
393	uValue = pThis->port_a;
394	break;
395	case BMS_PORT_SIG:
396	/* Read port B. */
397	uValue = pThis->port_b;
398	break;
399	case BMS_PORT_CTRL:
400	/* Read port C. */
401	uValue = pThis->port_c;
402	/* Some Microsoft driver code reads the control port 10,000 times when
403	* determining the IRQ level. This can occur faster than the IRQ line
404	* transitions and the detection fails. To work around this, we force
405	* the IRQ bit to toggle every once in a while.
406	*/
407	if (pThis->irq_toggle_counter)
408	pThis->irq_toggle_counter--;
409	else
410	{
411	pThis->irq_toggle_counter = 1000;
412	uValue ^= BMS_IRQ_BIT(pThis->irq);
413	}
414	break;
415	case BMS_PORT_INIT:
416	/* Read the 8255A control port. */
417	uValue = pThis->ctrl_port;
418	break;
419	default:
420	AssertMsgFailed(("invalid port %#x\n", offPort));
421	break;
422	}
423	LogRel3(("%s: read port %d: 0x%02x\n", __PRETTY_FUNCTION__, offPort, uValue));
424	return uValue;
425	}
426
427	/**
428	* Port I/O Handler for port IN operations.
429	*
430	* @returns VBox status code.
431	*
432	* @param pDevIns The device instance.
433	* @param pvUser User argument - ignored.
434	* @param Port Port number used for the IN operation.
435	* @param pu32 Where to store the result.
436	* @param cb Number of bytes read.
437	*/
438	PDMBOTHCBDECL(int) mouIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
439	{
440	NOREF(pvUser);
441	if (cb == 1)
442	{
443	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
444	*pu32 = bms_read_port(pThis, Port & 3);
445	Log2(("mouIOPortRead: Port=%#x cb=%d pu32=%#x\n", Port, cb, pu32));
446	return VINF_SUCCESS;
447	}
448	AssertMsgFailed(("Port=%#x cb=%d\n", Port, cb));
449	return VERR_IOM_IOPORT_UNUSED;
450	}
451
452	/**
453	* Port I/O Handler for port OUT operations.
454	*
455	* @returns VBox status code.
456	*
457	* @param pDevIns The device instance.
458	* @param pvUser User argument - ignored.
459	* @param Port Port number used for the IN operation.
460	* @param u32 The value to output.
461	* @param cb The value size in bytes.
462	*/
463	PDMBOTHCBDECL(int) mouIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
464	{
465	int rc = VINF_SUCCESS;
466	NOREF(pvUser);
467	if (cb == 1)
468	{
469	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
470	rc = bms_write_port(pThis, Port & 3, u32);
471	Log2(("mouIOPortWrite: Port=%#x cb=%d u32=%#x\n", Port, cb, u32));
472	}
473	else
474	AssertMsgFailed(("Port=%#x cb=%d\n", Port, cb));
475	return rc;
476	}
477
478	# ifdef IN_RING3
479
480	/**
481	* Saves the state of the device.
482	*
483	* @returns VBox status code.
484	* @param pDevIns The device instance.
485	* @param pSSMHandle The handle to save the state to.
486	*/
487	static DECLCALLBACK(int) mouSaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle)
488	{
489	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
490
491	/* 8255A state. */
492	SSMR3PutU8(pSSMHandle, pThis->port_a);
493	SSMR3PutU8(pSSMHandle, pThis->port_b);
494	SSMR3PutU8(pSSMHandle, pThis->port_c);
495	SSMR3PutU8(pSSMHandle, pThis->ctrl_port);
496	/* Other device state. */
497	SSMR3PutU8(pSSMHandle, pThis->cnt_held);
498	SSMR3PutU8(pSSMHandle, pThis->held_dx);
499	SSMR3PutU8(pSSMHandle, pThis->held_dy);
500	SSMR3PutU8(pSSMHandle, pThis->irq);
501	SSMR3PutU32(pSSMHandle, pThis->cTimerPeriodMs);
502	/* Current mouse state deltas. */
503	SSMR3PutS32(pSSMHandle, pThis->mouse_dx);
504	SSMR3PutS32(pSSMHandle, pThis->mouse_dy);
505	SSMR3PutU8(pSSMHandle, pThis->mouse_buttons_reported);
506	/* Timer. */
507	return TMR3TimerSave(pThis->MouseTimer, pSSMHandle);
508	}
509
510	/**
511	* Loads a saved device state.
512	*
513	* @returns VBox status code.
514	* @param pDevIns The device instance.
515	* @param pSSMHandle The handle to the saved state.
516	* @param uVersion The data unit version number.
517	* @param uPass The data pass.
518	*/
519	static DECLCALLBACK(int) mouLoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle, uint32_t uVersion, uint32_t uPass)
520	{
521	int rc;
522	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
523
524	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
525
526	if (uVersion > BMS_SAVED_STATE_VERSION)
527	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
528
529	/* 8255A state. */
530	SSMR3GetU8(pSSMHandle, &pThis->port_a);
531	SSMR3GetU8(pSSMHandle, &pThis->port_b);
532	SSMR3GetU8(pSSMHandle, &pThis->port_c);
533	SSMR3GetU8(pSSMHandle, &pThis->ctrl_port);
534	/* Other device state. */
535	SSMR3GetU8(pSSMHandle, &pThis->cnt_held);
536	SSMR3GetU8(pSSMHandle, &pThis->held_dx);
537	SSMR3GetU8(pSSMHandle, &pThis->held_dy);
538	SSMR3GetU8(pSSMHandle, &pThis->irq);
539	SSMR3GetU32(pSSMHandle, &pThis->cTimerPeriodMs);
540	/* Current mouse state deltas. */
541	SSMR3GetS32(pSSMHandle, &pThis->mouse_dx);
542	SSMR3GetS32(pSSMHandle, &pThis->mouse_dy);
543	SSMR3GetU8(pSSMHandle, &pThis->mouse_buttons_reported);
544	/* Timer. */
545	rc = TMR3TimerLoad(pThis->MouseTimer, pSSMHandle);
546	return rc;
547	}
548
549	/**
550	* Reset notification.
551	*
552	* @returns VBox status.
553	* @param pDevIns The device instance data.
554	*/
555	static DECLCALLBACK(void) mouReset(PPDMDEVINS pDevIns)
556	{
557	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
558
559	/* Reinitialize the timer. */
560	pThis->cTimerPeriodMs = BMS_IRQ_PERIOD_MS / 2;
561	TMTimerSetMillies(pThis->MouseTimer, pThis->cTimerPeriodMs);
562
563	bms_reset(pThis);
564	}
565
566
567	/* -=-=-=-=-=- Mouse: IBase -=-=-=-=-=- */
568
569	/**
570	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
571	*/
572	static DECLCALLBACK(void ) mouQueryMouseInterface(PPDMIBASE pInterface, const char pszIID)
573	{
574	MouState *pThis = RT_FROM_MEMBER(pInterface, MouState, Mouse.IBase);
575	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->Mouse.IBase);
576	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUSEPORT, &pThis->Mouse.IPort);
577	return NULL;
578	}
579
580
581	/* -=-=-=-=-=- Mouse: IMousePort -=-=-=-=-=- */
582
583	/**
584	* @interface_method_impl{PDMIMOUSEPORT, pfnPutEvent}
585	*/
586	static DECLCALLBACK(int) mouPutEvent(PPDMIMOUSEPORT pInterface, int32_t dx,
587	int32_t dy, int32_t dz, int32_t dw,
588	uint32_t fButtons)
589	{
590	MouState *pThis = RT_FROM_MEMBER(pInterface, MouState, Mouse.IPort);
591	int rc = PDMCritSectEnter(pThis->CTX_SUFF(pDevIns)->CTX_SUFF(pCritSectRo), VERR_SEM_BUSY);
592	AssertReleaseRC(rc);
593
594	bms_mouse_event(pThis, dx, dy, dz, dw, fButtons);
595
596	PDMCritSectLeave(pThis->CTX_SUFF(pDevIns)->CTX_SUFF(pCritSectRo));
597	return VINF_SUCCESS;
598	}
599
600	/**
601	* @interface_method_impl{PDMIMOUSEPORT, pfnPutEventAbs}
602	*/
603	static DECLCALLBACK(int) mouPutEventAbs(PPDMIMOUSEPORT pInterface, uint32_t x,
604	uint32_t y, int32_t dz, int32_t dw,
605	uint32_t fButtons)
606	{
607	AssertFailedReturn(VERR_NOT_SUPPORTED);
608	}
609
610	/**
611	* @interface_method_impl{PDMIMOUSEPORT, pfnPutEventMultiTouch}
612	*/
613	static DECLCALLBACK(int) mouPutEventMultiTouch(PPDMIMOUSEPORT pInterface, uint8_t cContacts,
614	const uint64_t *pau64Contacts, uint32_t u32ScanTime)
615	{
616	AssertFailedReturn(VERR_NOT_SUPPORTED);
617	}
618
619	/* -=-=-=-=-=- setup code -=-=-=-=-=- */
620
621
622	/**
623	* Attach command.
624	*
625	* This is called to let the device attach to a driver for a specified LUN
626	* during runtime. This is not called during VM construction, the device
627	* constructor have to attach to all the available drivers.
628	*
629	* This is like plugging in the mouse after turning on the PC.
630	*
631	* @returns VBox status code.
632	* @param pDevIns The device instance.
633	* @param iLUN The logical unit which is being detached.
634	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
635	* @remark The controller doesn't support this action, this is just
636	* implemented to try out the driver<->device structure.
637	*/
638	static DECLCALLBACK(int) mouAttach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
639	{
640	int rc;
641	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
642
643	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
644	("Bus mouse device does not support hotplugging\n"),
645	VERR_INVALID_PARAMETER);
646
647	switch (iLUN)
648	{
649	/* LUN #0: mouse */
650	case 0:
651	rc = PDMDevHlpDriverAttach(pDevIns, iLUN, &pThis->Mouse.IBase, &pThis->Mouse.pDrvBase, "Bus Mouse Port");
652	if (RT_SUCCESS(rc))
653	{
654	pThis->Mouse.pDrv = PDMIBASE_QUERY_INTERFACE(pThis->Mouse.pDrvBase, PDMIMOUSECONNECTOR);
655	if (!pThis->Mouse.pDrv)
656	{
657	AssertLogRelMsgFailed(("LUN #0 doesn't have a mouse interface! rc=%Rrc\n", rc));
658	rc = VERR_PDM_MISSING_INTERFACE;
659	}
660	}
661	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
662	{
663	Log(("%s/%d: warning: no driver attached to LUN #0!\n", pDevIns->pReg->szName, pDevIns->iInstance));
664	rc = VINF_SUCCESS;
665	}
666	else
667	AssertLogRelMsgFailed(("Failed to attach LUN #0! rc=%Rrc\n", rc));
668	break;
669
670	default:
671	AssertMsgFailed(("Invalid LUN #%d\n", iLUN));
672	return VERR_PDM_NO_SUCH_LUN;
673	}
674
675	return rc;
676	}
677
678
679	/**
680	* Detach notification.
681	*
682	* This is called when a driver is detaching itself from a LUN of the device.
683	* The device should adjust it's state to reflect this.
684	*
685	* This is like unplugging the network cable to use it for the laptop or
686	* something while the PC is still running.
687	*
688	* @param pDevIns The device instance.
689	* @param iLUN The logical unit which is being detached.
690	* @param fFlags Flags, combination of the PDMDEVATT_FLAGS_* \#defines.
691	* @remark The controller doesn't support this action, this is just
692	* implemented to try out the driver<->device structure.
693	*/
694	static DECLCALLBACK(void) mouDetach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
695	{
696	#if 0
697	/*
698	* Reset the interfaces and update the controller state.
699	*/
700	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
701	switch (iLUN)
702	{
703	/* LUN #0: mouse */
704	case 0:
705	pThis->Mouse.pDrv = NULL;
706	pThis->Mouse.pDrvBase = NULL;
707	break;
708
709	default:
710	AssertMsgFailed(("Invalid LUN #%d\n", iLUN));
711	break;
712	}
713	#endif
714	}
715
716
717	/**
718	* @copydoc FNPDMDEVRELOCATE
719	*/
720	static DECLCALLBACK(void) mouRelocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
721	{
722	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
723	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
724	}
725
726
727	/**
728	* @interface_method_impl{PDMDEVREG,pfnConstruct}
729	*/
730	static DECLCALLBACK(int) mouConstruct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
731	{
732	MouState pThis = PDMINS_2_DATA(pDevIns, MouState );
733	int rc;
734	bool fGCEnabled;
735	bool fR0Enabled;
736	uint8_t irq_lvl;
737	Assert(iInstance == 0);
738
739	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
740
741	/*
742	* Validate and read the configuration.
743	*/
744	if (!CFGMR3AreValuesValid(pCfg, "IRQ\0GCEnabled\0R0Enabled\0"))
745	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
746	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &fGCEnabled, true);
747	if (RT_FAILURE(rc))
748	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to query \"GCEnabled\" from the config"));
749	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &fR0Enabled, true);
750	if (RT_FAILURE(rc))
751	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to query \"R0Enabled\" from the config"));
752	rc = CFGMR3QueryU8Def(pCfg, "IRQ", &irq_lvl, BMS_DEFAULT_IRQ);
753	if (RT_FAILURE(rc))
754	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to query \"IRQ\" from the config"));
755	if ((irq_lvl < 2) \|\| (irq_lvl > 5))
756	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Invalid \"IRQ\" config setting"));
757
758	pThis->irq = irq_lvl;
759	///@todo: remove after properly enabling RC/GC support
760	fGCEnabled = fR0Enabled = false;
761	Log(("busmouse: IRQ=%d fGCEnabled=%RTbool fR0Enabled=%RTbool\n", irq_lvl, fGCEnabled, fR0Enabled));
762
763	/*
764	* Initialize the interfaces.
765	*/
766	pThis->pDevInsR3 = pDevIns;
767	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
768	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
769	pThis->Mouse.IBase.pfnQueryInterface = mouQueryMouseInterface;
770	pThis->Mouse.IPort.pfnPutEvent = mouPutEvent;
771	pThis->Mouse.IPort.pfnPutEventAbs = mouPutEventAbs;
772	pThis->Mouse.IPort.pfnPutEventMultiTouch = mouPutEventMultiTouch;
773
774	/*
775	* Create the interrupt timer.
776	*/
777	rc = PDMDevHlpTMTimerCreate(pDevIns, TMCLOCK_VIRTUAL, bmsTimerCallback,
778	pThis, TMTIMER_FLAGS_DEFAULT_CRIT_SECT,
779	"Bus Mouse Timer", &pThis->MouseTimer);
780	if (RT_FAILURE(rc))
781	return rc;
782
783	/*
784	* Register I/O ports, saved state, and mouse event handlers.
785	*/
786	rc = PDMDevHlpIOPortRegister(pDevIns, BMS_IO_BASE, BMS_IO_SIZE, NULL, mouIOPortWrite, mouIOPortRead, NULL, NULL, "Bus Mouse");
787	if (RT_FAILURE(rc))
788	return rc;
789	if (fGCEnabled)
790	{
791	rc = PDMDevHlpIOPortRegisterRC(pDevIns, BMS_IO_BASE, BMS_IO_SIZE, 0, "mouIOPortWrite", "mouIOPortRead", NULL, NULL, "Bus Mouse");
792	if (RT_FAILURE(rc))
793	return rc;
794	}
795	if (fR0Enabled)
796	{
797	rc = PDMDevHlpIOPortRegisterR0(pDevIns, BMS_IO_BASE, BMS_IO_SIZE, 0, "mouIOPortWrite", "mouIOPortRead", NULL, NULL, "Bus Mouse");
798	if (RT_FAILURE(rc))
799	return rc;
800	}
801	rc = PDMDevHlpSSMRegister(pDevIns, BMS_SAVED_STATE_VERSION, sizeof(*pThis), mouSaveExec, mouLoadExec);
802	if (RT_FAILURE(rc))
803	return rc;
804
805	/*
806	* Attach to the mouse driver.
807	*/
808	rc = mouAttach(pDevIns, 0, PDM_TACH_FLAGS_NOT_HOT_PLUG);
809	if (RT_FAILURE(rc))
810	return rc;
811
812	/*
813	* Initialize the device state.
814	*/
815	mouReset(pDevIns);
816
817	return VINF_SUCCESS;
818	}
819
820
821	/**
822	* The device registration structure.
823	*/
824	const PDMDEVREG g_DeviceBusMouse =
825	{
826	/* u32Version */
827	PDM_DEVREG_VERSION,
828	/* szName */
829	"busmouse",
830	/* szRCMod */
831	"VBoxDDGC.gc",
832	/* szR0Mod */
833	"VBoxDDR0.r0",
834	/* pszDescription */
835	"Microsoft Bus Mouse controller. "
836	"LUN #0 is the mouse connector.",
837	/* fFlags */
838	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_32_64 \| PDM_DEVREG_FLAGS_PAE36
839	\| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0,
840	/* fClass */
841	PDM_DEVREG_CLASS_INPUT,
842	/* cMaxInstances */
843	1,
844	/* cbInstance */
845	sizeof(MouState),
846	/* pfnConstruct */
847	mouConstruct,
848	/* pfnDestruct */
849	NULL,
850	/* pfnRelocate */
851	mouRelocate,
852	/* pfnMemSetup */
853	NULL,
854	/* pfnPowerOn */
855	NULL,
856	/* pfnReset */
857	mouReset,
858	/* pfnSuspend */
859	NULL,
860	/* pfnResume */
861	NULL,
862	/* pfnAttach */
863	mouAttach,
864	/* pfnDetach */
865	mouDetach,
866	/* pfnQueryInterface. */
867	NULL,
868	/* pfnInitComplete */
869	NULL,
870	/* pfnPowerOff */
871	NULL,
872	/* pfnSoftReset */
873	NULL,
874	/* u32VersionEnd */
875	PDM_DEVREG_VERSION
876	};
877
878	#ifdef VBOX_IN_EXTPACK_R3
879	/**
880	* @callback_method_impl{FNPDMVBOXDEVICESREGISTER}
881	*/
882	extern "C" DECLEXPORT(int) VBoxDevicesRegister(PPDMDEVREGCB pCallbacks, uint32_t u32Version)
883	{
884	AssertLogRelMsgReturn(u32Version >= VBOX_VERSION,
885	("u32Version=%#x VBOX_VERSION=%#x\n", u32Version, VBOX_VERSION),
886	VERR_EXTPACK_VBOX_VERSION_MISMATCH);
887	AssertLogRelMsgReturn(pCallbacks->u32Version == PDM_DEVREG_CB_VERSION,
888	("pCallbacks->u32Version=%#x PDM_DEVREG_CB_VERSION=%#x\n", pCallbacks->u32Version, PDM_DEVREG_CB_VERSION),
889	VERR_VERSION_MISMATCH);
890
891	return pCallbacks->pfnRegister(pCallbacks, &g_DeviceBusMouse);
892	}
893	#endif /* VBOX_IN_EXTPACK_R3 */
894
895	# endif /* IN_RING3 */
896	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
897

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source: vbox/trunk/src/VBox/ExtPacks/BusMouseSample/BusMouse.cpp@ 50174

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