DevBusMouse.cpp@ 107044

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1	/* $Id: DevBusMouse.cpp 106061 2024-09-16 14:03:52Z vboxsync $ */
2	/** @file
3	* BusMouse - Microsoft Bus (parallel) mouse controller device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2024 Oracle and/or its affiliates.
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	/*********************************************************************************************************************************
33	* Header Files *
34	*********************************************************************************************************************************/
35	#define LOG_GROUP LOG_GROUP_DEV_KBD
36	#include <VBox/vmm/pdmdev.h>
37	#ifndef IN_RING3
38	# include <VBox/vmm/pdmapi.h>
39	#endif
40	#include <VBox/AssertGuest.h>
41	#include <VBox/version.h>
42	#include <iprt/assert.h>
43	#include <iprt/uuid.h>
44
45	/** @page pg_busmouse DevBusMouse - Microsoft Bus Mouse Emulation
46	*
47	* The Microsoft Bus Mouse was an early mouse sold by Microsoft, originally
48	* introduced in 1983. The mouse had a D-shaped 9-pin connector which plugged
49	* into a small ISA add-in board.
50	*
51	* The mouse itself was very simple (compared to a serial mouse) and most of the
52	* logic was located on the ISA board. Later, Microsoft sold an InPort mouse,
53	* which was also called a "bus mouse", but used a different interface.
54	*
55	* Microsoft part numbers for the Bus Mouse were 037-099 (100 ppi)
56	* and 037-199 (200 ppi).
57	*
58	* The Bus Mouse adapter included IRQ configuration jumpers (ref. MS article
59	* Q12230). The IRQ could be set to one of 2, 3, 4, 5. The typical setting
60	* would be IRQ 2 for a PC/XT and IRQ 5 for an AT compatible. Because IRQ 5
61	* may conflict with a SoundBlaster or a PCI device, this device defaults to
62	* IRQ 3. Note that IRQ 3 is also used by the COM 2 device, not often needed.
63	*
64	* The ISA adapter was built around an Intel 8255A compatible chip (ref.
65	* MS article Q46369). Once enabled, the adapter raises the configured IRQ
66	* 30 times per second; the rate is not configurable. The interrupts
67	* occur regardless of whether the mouse state has changed or not.
68	*
69	* To function properly, the 8255A must be programmed as follows:
70	* - Port A: Input. Used to read motion deltas and button states.
71	* - Port B: Output. Not used except for mouse detection.
72	* - Port C: Split. Upper bits set as output, used for control purposes.
73	* Lower bits set as input, reflecting IRQ state.
74	*
75	* Detailed information was gleaned from Windows and OS/2 DDK mouse samples.
76	*/
77
78
79	/*********************************************************************************************************************************
80	* Defined Constants And Macros *
81	*********************************************************************************************************************************/
82	/** The original bus mouse controller is fixed at I/O port 0x23C. */
83	#define BMS_IO_BASE 0x23C
84	#define BMS_IO_SIZE 4
85
86	/** @name Offsets relative to the I/O base.
87	@{ /
88	#define BMS_PORT_DATA 0 /*< 8255 Port A. /
89	#define BMS_PORT_SIG 1 /*< 8255 Port B. /
90	#define BMS_PORT_CTRL 2 /*< 8255 Port C. /
91	#define BMS_PORT_INIT 3 /*< 8255 Control Port. /
92	/** @} */
93
94	/** @name Port C bits (control port).
95	* @{ */
96	#define BMS_CTL_INT_DIS RT_BIT(4) /*< Disable IRQ (else enabled). /
97	#define BMS_CTL_SEL_HIGH RT_BIT(5) /*< Select hi nibble (else lo). /
98	#define BMS_CTL_SEL_Y RT_BIT(6) /*< Select X to read (else Y). /
99	#define BMS_CTL_HOLD RT_BIT(7) /*< Hold counter (else clear). /
100	/** @} */
101
102	/** @name Port A bits (data port).
103	* @{ */
104	#define BMS_DATA_DELTA 0x0F /*< Motion delta in lower nibble. /
105	#define BMS_DATA_B3_UP RT_BIT(5) /*< Button 3 (right) is up. /
106	#define BMS_DATA_B2_UP RT_BIT(6) /*< Button 2 (middle) is up. /
107	#define BMS_DATA_B1_UP RT_BIT(7) /*< Button 1 (left) is up. /
108	/** @} */
109
110	/** Convert IRQ level (2/3/4/5) to a bit in the control register. */
111	#define BMS_IRQ_BIT(a) (1 << (5 - a))
112
113	/** IRQ period, corresponds to approx. 30 Hz. */
114	#define BMS_IRQ_PERIOD_MS 34
115
116	/** Default IRQ setting. */
117	#define BMS_DEFAULT_IRQ 3
118
119	/** The saved state version. */
120	#define BMS_SAVED_STATE_VERSION 1
121
122
123	/*********************************************************************************************************************************
124	* Structures and Typedefs *
125	*********************************************************************************************************************************/
126	/**
127	* The shared Bus Mouse device state.
128	*/
129	typedef struct MouState
130	{
131	/** @name 8255A state
132	* @{ */
133	uint8_t port_a;
134	uint8_t port_b;
135	uint8_t port_c;
136	uint8_t ctrl_port;
137	uint8_t cnt_held; /*< Counters held for reading. /
138	uint8_t held_dx;
139	uint8_t held_dy;
140	uint8_t irq; /*< The "jumpered" IRQ level. /
141	int32_t irq_toggle_counter;
142	/** Timer period in milliseconds. */
143	uint32_t cTimerPeriodMs;
144	/** Mouse timer handle. */
145	TMTIMERHANDLE hMouseTimer;
146	/** @} */
147
148	/** @name mouse state
149	* @{ */
150	int32_t disable_counter;
151	int32_t mouse_dx; /* current values, needed for 'poll' mode */
152	int32_t mouse_dy;
153	uint8_t mouse_enabled;
154	uint8_t mouse_buttons;
155	uint8_t mouse_buttons_reported;
156	uint8_t bAlignment;
157	/** @} */
158
159	/** The I/O ports registration. */
160	IOMIOPORTHANDLE hIoPorts;
161
162	} MouState, BMSSTATE;
163	/** Pointer to the shared Bus Mouse device state. */
164	typedef BMSSTATE *PBMSSTATE;
165
166
167	/**
168	* The ring-3 Bus Mouse device state.
169	*/
170	typedef struct BMSSTATER3
171	{
172	/** Pointer to the device instance.
173	* @note Only for getting our bearings in an interface method. */
174	PPDMDEVINSR3 pDevIns;
175
176	/**
177	* Mouse port - LUN#0.
178	*
179	* @implements PDMIBASE
180	* @implements PDMIMOUSEPORT
181	*/
182	struct
183	{
184	/** The base interface for the mouse port. */
185	PDMIBASE IBase;
186	/** The mouse port base interface. */
187	PDMIMOUSEPORT IPort;
188
189	/** The base interface of the attached mouse driver. */
190	R3PTRTYPE(PPDMIBASE) pDrvBase;
191	/** The mouse interface of the attached mouse driver. */
192	R3PTRTYPE(PPDMIMOUSECONNECTOR) pDrv;
193	} Mouse;
194	} BMSSTATER3;
195	/** Pointer to the ring-3 Bus Mouse device state. */
196	typedef BMSSTATER3 *PBMSSTATER3;
197
198
199	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
200
201	# ifdef IN_RING3
202
203	/**
204	* Report a change in status down the driver chain.
205	*
206	* We want to report the mouse as enabled if and only if the guest is "using"
207	* it. That way, other devices (e.g. a PS/2 or USB mouse) can receive mouse
208	* events when the bus mouse is disabled. Enabling interrupts constitutes
209	* enabling the bus mouse. The mouse is considered disabled if interrupts are
210	* disabled for several consecutive mouse timer ticks; this is because the
211	* interrupt handler in the guest typically temporarily disables interrupts and
212	* we do not want to toggle the enabled/disabled state more often than
213	* necessary.
214	*/
215	static void bmsR3UpdateDownstreamStatus(PBMSSTATE pThis, PBMSSTATER3 pThisCC)
216	{
217	PPDMIMOUSECONNECTOR pDrv = pThisCC->Mouse.pDrv;
218	bool fEnabled = !!pThis->mouse_enabled;
219	if (pDrv) /* pDrv may be NULL if no mouse interface attached. */
220	pDrv->pfnReportModes(pDrv, fEnabled, false, false, false);
221	}
222
223	/**
224	* Process a mouse event coming from the host.
225	*/
226	static void bmsR3MouseEvent(PBMSSTATE pThis, int dx, int dy, int dz, int dw, int buttons_state)
227	{
228	LogRel3(("%s: dx=%d, dy=%d, dz=%d, dw=%d, buttons_state=0x%x\n",
229	__PRETTY_FUNCTION__, dx, dy, dz, dw, buttons_state));
230
231	/* Only record X/Y movement and buttons. */
232	pThis->mouse_dx += dx;
233	pThis->mouse_dy += dy;
234	pThis->mouse_buttons = buttons_state;
235	}
236
237	/**
238	* @callback_method_impl{FNTMTIMERDEV}
239	*/
240	static DECLCALLBACK(void) bmsR3TimerCallback(PPDMDEVINS pDevIns, TMTIMERHANDLE hTimer, void *pvUser)
241	{
242	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
243	PBMSSTATER3 pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PBMSSTATER3);
244	uint8_t irq_bit;
245	RT_NOREF(pvUser);
246	Assert(hTimer == pThis->hMouseTimer);
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(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(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	bmsR3UpdateDownstreamStatus(pThis, pThisCC);
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	bmsR3UpdateDownstreamStatus(pThis, pThisCC);
283	}
284	}
285
286	/* Re-arm the timer. */
287	PDMDevHlpTimerSetMillies(pDevIns, hTimer, pThis->cTimerPeriodMs);
288	}
289
290	# endif /* IN_RING3 */
291
292	static void bmsSetReportedButtons(PBMSSTATE pThis, unsigned fButtons, unsigned fButtonMask)
293	{
294	pThis->mouse_buttons_reported \|= (fButtons & fButtonMask);
295	pThis->mouse_buttons_reported &= (fButtons \| ~fButtonMask);
296	}
297
298	/**
299	* Update the internal state after a write to port C.
300	*/
301	static void bmsUpdateCtrl(PPDMDEVINS pDevIns, PBMSSTATE pThis)
302	{
303	int32_t dx, dy;
304
305	/* If the controller is in hold state, transfer data from counters. */
306	if (pThis->port_c & BMS_CTL_HOLD)
307	{
308	if (!pThis->cnt_held)
309	{
310	pThis->cnt_held = true;
311	dx = pThis->mouse_dx < 0 ? RT_MAX(pThis->mouse_dx, -128)
312	: RT_MIN(pThis->mouse_dx, 127);
313	dy = pThis->mouse_dy < 0 ? RT_MAX(pThis->mouse_dy, -128)
314	: RT_MIN(pThis->mouse_dy, 127);
315	pThis->mouse_dx -= dx;
316	pThis->mouse_dy -= dy;
317	bmsSetReportedButtons(pThis, pThis->mouse_buttons & 0x07, 0x07);
318
319	/* Force type conversion. */
320	pThis->held_dx = dx;
321	pThis->held_dy = dy;
322	}
323	}
324	else
325	pThis->cnt_held = false;
326
327	/* Move the appropriate nibble into port A. */
328	if (pThis->cnt_held)
329	{
330	if (pThis->port_c & BMS_CTL_SEL_Y)
331	{
332	if (pThis->port_c & BMS_CTL_SEL_HIGH)
333	pThis->port_a = pThis->held_dy >> 4;
334	else
335	pThis->port_a = pThis->held_dy & 0xF;
336	}
337	else
338	{
339	if (pThis->port_c & BMS_CTL_SEL_HIGH)
340	pThis->port_a = pThis->held_dx >> 4;
341	else
342	pThis->port_a = pThis->held_dx & 0xF;
343	}
344	/* And update the button bits. */
345	pThis->port_a \|= pThis->mouse_buttons & 1 ? 0 : BMS_DATA_B1_UP;
346	pThis->port_a \|= pThis->mouse_buttons & 2 ? 0 : BMS_DATA_B3_UP;
347	pThis->port_a \|= pThis->mouse_buttons & 4 ? 0 : BMS_DATA_B2_UP;
348	}
349	/* Immediately clear the IRQ if necessary. */
350	if (pThis->port_c & BMS_CTL_INT_DIS)
351	{
352	PDMDevHlpISASetIrq(pDevIns, pThis->irq, PDM_IRQ_LEVEL_LOW);
353	pThis->port_c &= ~BMS_IRQ_BIT(pThis->irq);
354	}
355	}
356
357	/**
358	* @callback_method_impl{FNIOMIOPORTNEWIN}
359	*/
360	static DECLCALLBACK(VBOXSTRICTRC) bmsIoPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT offPort, uint32_t pu32, unsigned cb)
361	{
362	RT_NOREF(pvUser);
363	if (cb == 1)
364	{
365	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
366	uint32_t uValue;
367
368	switch (offPort)
369	{
370	case BMS_PORT_DATA:
371	/* Read port A. */
372	uValue = pThis->port_a;
373	break;
374	case BMS_PORT_SIG:
375	/* Read port B. */
376	uValue = pThis->port_b;
377	break;
378	case BMS_PORT_CTRL:
379	/* Read port C. */
380	uValue = pThis->port_c;
381	/* Some Microsoft driver code reads the control port 10,000 times when
382	* determining the IRQ level. This can occur faster than the IRQ line
383	* transitions and the detection fails. To work around this, we force
384	* the IRQ bit to toggle every once in a while.
385	*/
386	if (pThis->irq_toggle_counter)
387	pThis->irq_toggle_counter--;
388	else
389	{
390	pThis->irq_toggle_counter = 1000;
391	uValue ^= BMS_IRQ_BIT(pThis->irq);
392	}
393	break;
394	case BMS_PORT_INIT:
395	/* Read the 8255A control port. */
396	uValue = pThis->ctrl_port;
397	break;
398	default:
399	ASSERT_GUEST_MSG_FAILED(("invalid port %#x\n", offPort));
400	uValue = 0xff;
401	break;
402	}
403
404	*pu32 = uValue;
405	Log2(("mouIoPortRead: offPort=%#x+%x cb=%d *pu32=%#x\n", BMS_IO_BASE, offPort, cb, uValue));
406	LogRel3(("mouIoPortRead: read port %u: %#04x\n", offPort, uValue));
407	return VINF_SUCCESS;
408	}
409	ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d\n", offPort, cb));
410	return VERR_IOM_IOPORT_UNUSED;
411	}
412
413	/**
414	* @callback_method_impl{FNIOMIOPORTNEWOUT}
415	*/
416	static DECLCALLBACK(VBOXSTRICTRC) bmsIoPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
417	{
418	RT_NOREF(pvUser);
419	if (cb == 1)
420	{
421	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
422	LogRel3(("mouIoPortWrite: write port %u: %#04x\n", offPort, u32));
423
424	switch (offPort)
425	{
426	case BMS_PORT_SIG:
427	/* Update port B. */
428	pThis->port_b = u32;
429	break;
430	case BMS_PORT_DATA:
431	/* Do nothing, port A is not writable. */
432	break;
433	case BMS_PORT_INIT:
434	pThis->ctrl_port = u32;
435	break;
436	case BMS_PORT_CTRL:
437	/* Update the high nibble of port C. */
438	pThis->port_c = (u32 & 0xF0) \| (pThis->port_c & 0x0F);
439	bmsUpdateCtrl(pDevIns, pThis);
440	break;
441	default:
442	ASSERT_GUEST_MSG_FAILED(("invalid port %#x\n", offPort));
443	break;
444	}
445
446	Log2(("mouIoPortWrite: offPort=%#x+%u cb=%d u32=%#x\n", BMS_IO_BASE, offPort, cb, u32));
447	}
448	else
449	ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d\n", offPort, cb));
450	return VINF_SUCCESS;
451	}
452
453	# ifdef IN_RING3
454
455	/**
456	* @callback_method_impl{FNSSMDEVSAVEEXEC}
457	*/
458	static DECLCALLBACK(int) bmsR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle)
459	{
460	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
461	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
462
463	/* 8255A state. */
464	pHlp->pfnSSMPutU8(pSSMHandle, pThis->port_a);
465	pHlp->pfnSSMPutU8(pSSMHandle, pThis->port_b);
466	pHlp->pfnSSMPutU8(pSSMHandle, pThis->port_c);
467	pHlp->pfnSSMPutU8(pSSMHandle, pThis->ctrl_port);
468	/* Other device state. */
469	pHlp->pfnSSMPutU8(pSSMHandle, pThis->cnt_held);
470	pHlp->pfnSSMPutU8(pSSMHandle, pThis->held_dx);
471	pHlp->pfnSSMPutU8(pSSMHandle, pThis->held_dy);
472	pHlp->pfnSSMPutU8(pSSMHandle, pThis->irq);
473	pHlp->pfnSSMPutU32(pSSMHandle, pThis->cTimerPeriodMs);
474	/* Current mouse state deltas. */
475	pHlp->pfnSSMPutS32(pSSMHandle, pThis->mouse_dx);
476	pHlp->pfnSSMPutS32(pSSMHandle, pThis->mouse_dy);
477	pHlp->pfnSSMPutU8(pSSMHandle, pThis->mouse_buttons_reported);
478	/* Timer. */
479	return PDMDevHlpTimerSave(pDevIns, pThis->hMouseTimer, pSSMHandle);
480	}
481
482	/**
483	* @callback_method_impl{FNSSMDEVLOADEXEC}
484	*/
485	static DECLCALLBACK(int) bmsR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle, uint32_t uVersion, uint32_t uPass)
486	{
487	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
488	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
489
490	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
491
492	if (uVersion > BMS_SAVED_STATE_VERSION)
493	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
494
495	/* 8255A state. */
496	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->port_a);
497	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->port_b);
498	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->port_c);
499	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->ctrl_port);
500	/* Other device state. */
501	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->cnt_held);
502	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->held_dx);
503	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->held_dy);
504	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->irq);
505	pHlp->pfnSSMGetU32(pSSMHandle, &pThis->cTimerPeriodMs);
506	/* Current mouse state deltas. */
507	pHlp->pfnSSMGetS32(pSSMHandle, &pThis->mouse_dx);
508	pHlp->pfnSSMGetS32(pSSMHandle, &pThis->mouse_dy);
509	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->mouse_buttons_reported);
510	/* Timer. */
511	return PDMDevHlpTimerLoad(pDevIns, pThis->hMouseTimer, pSSMHandle);
512	}
513
514	/**
515	* Reset notification.
516	*
517	* @returns VBox status code.
518	* @param pDevIns The device instance data.
519	*/
520	static DECLCALLBACK(void) bmsR3Reset(PPDMDEVINS pDevIns)
521	{
522	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
523	PBMSSTATER3 pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PBMSSTATER3);
524
525	/* Reinitialize the timer. */
526	pThis->cTimerPeriodMs = BMS_IRQ_PERIOD_MS / 2;
527	PDMDevHlpTimerSetMillies(pDevIns, pThis->hMouseTimer, pThis->cTimerPeriodMs);
528
529	/* Clear the device setup. */
530	pThis->port_a = pThis->port_b = 0;
531	pThis->port_c = BMS_CTL_INT_DIS; /* Interrupts disabled. */
532	pThis->ctrl_port = 0x91; /* Default 8255A setup. */
533
534	/* Clear motion/button state. */
535	pThis->cnt_held = false;
536	pThis->mouse_dx = pThis->mouse_dy = 0;
537	pThis->mouse_buttons = 0;
538	pThis->mouse_buttons_reported = 0;
539	pThis->disable_counter = 0;
540	pThis->irq_toggle_counter = 1000;
541
542	if (pThis->mouse_enabled)
543	{
544	pThis->mouse_enabled = false;
545	bmsR3UpdateDownstreamStatus(pThis, pThisCC);
546	}
547	}
548
549
550	/* -=-=-=-=-=- Mouse: IBase -=-=-=-=-=- */
551
552	/**
553	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
554	*/
555	static DECLCALLBACK(void ) bmsR3Base_QueryMouseInterface(PPDMIBASE pInterface, const char pszIID)
556	{
557	PBMSSTATER3 pThisCC = RT_FROM_MEMBER(pInterface, BMSSTATER3, Mouse.IBase);
558	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThisCC->Mouse.IBase);
559	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUSEPORT, &pThisCC->Mouse.IPort);
560	return NULL;
561	}
562
563
564	/* -=-=-=-=-=- Mouse: IMousePort -=-=-=-=-=- */
565
566	/**
567	* @interface_method_impl{PDMIMOUSEPORT,pfnPutEvent}
568	*/
569	static DECLCALLBACK(int) bmsR3MousePort_PutEvent(PPDMIMOUSEPORT pInterface, int32_t dx,
570	int32_t dy, int32_t dz, int32_t dw,
571	uint32_t fButtons)
572	{
573	PBMSSTATER3 pThisCC = RT_FROM_MEMBER(pInterface, BMSSTATER3, Mouse.IPort);
574	PPDMDEVINS pDevIns = pThisCC->pDevIns;
575	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
576	int rc = PDMDevHlpCritSectEnter(pDevIns, pDevIns->CTX_SUFF(pCritSectRo), VERR_SEM_BUSY);
577	PDM_CRITSECT_RELEASE_ASSERT_RC_DEV(pDevIns, pDevIns->CTX_SUFF(pCritSectRo), rc);
578
579	bmsR3MouseEvent(pThis, dx, dy, dz, dw, fButtons);
580
581	PDMDevHlpCritSectLeave(pDevIns, pDevIns->CTX_SUFF(pCritSectRo));
582	return VINF_SUCCESS;
583	}
584
585	/**
586	* @interface_method_impl{PDMIMOUSEPORT,pfnPutEventAbs}
587	*/
588	static DECLCALLBACK(int) bmsR3MousePort_PutEventAbs(PPDMIMOUSEPORT pInterface, uint32_t x, uint32_t y,
589	int32_t dz, int32_t dw, uint32_t fButtons)
590	{
591	RT_NOREF(pInterface, x, y, dz, dw, fButtons);
592	AssertFailedReturn(VERR_NOT_SUPPORTED);
593	}
594
595	/**
596	* @interface_method_impl{PDMIMOUSEPORT,pfnPutEventMultiTouch}
597	*/
598	static DECLCALLBACK(int) bmsR3MousePort_PutEventMultiTouch(PPDMIMOUSEPORT pInterface, uint8_t cContacts,
599	const uint64_t *pau64Contacts, uint32_t u32ScanTime)
600	{
601	RT_NOREF(pInterface, cContacts, pau64Contacts, u32ScanTime);
602	AssertFailedReturn(VERR_NOT_SUPPORTED);
603	}
604
605	/* -=-=-=-=-=- setup code -=-=-=-=-=- */
606
607
608	/**
609	* @interface_method_impl{PDMDEVREGR3,pfnAttach}
610	*/
611	static DECLCALLBACK(int) bmsR3Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
612	{
613	PBMSSTATER3 pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PBMSSTATER3);
614	int rc;
615
616	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
617	("Bus mouse device does not support hotplugging\n"),
618	VERR_INVALID_PARAMETER);
619
620	switch (iLUN)
621	{
622	/* LUN #0: mouse */
623	case 0:
624	rc = PDMDevHlpDriverAttach(pDevIns, iLUN, &pThisCC->Mouse.IBase, &pThisCC->Mouse.pDrvBase, "Bus Mouse Port");
625	if (RT_SUCCESS(rc))
626	{
627	pThisCC->Mouse.pDrv = PDMIBASE_QUERY_INTERFACE(pThisCC->Mouse.pDrvBase, PDMIMOUSECONNECTOR);
628	if (!pThisCC->Mouse.pDrv)
629	{
630	AssertLogRelMsgFailed(("LUN #0 doesn't have a mouse interface! rc=%Rrc\n", rc));
631	rc = VERR_PDM_MISSING_INTERFACE;
632	}
633	}
634	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
635	{
636	LogRel(("%s/%d: Warning: no driver attached to LUN #0!\n", pDevIns->pReg->szName, pDevIns->iInstance));
637	rc = VINF_SUCCESS;
638	}
639	else
640	AssertLogRelMsgFailed(("Failed to attach LUN #0! rc=%Rrc\n", rc));
641	break;
642
643	default:
644	AssertMsgFailed(("Invalid LUN #%d\n", iLUN));
645	return VERR_PDM_NO_SUCH_LUN;
646	}
647
648	return rc;
649	}
650
651
652	/**
653	* @interface_method_impl{PDMDEVREGR3,pfnDetach}
654	*/
655	static DECLCALLBACK(void) bmsR3Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
656	{
657	# if 0
658	/*
659	* Reset the interfaces and update the controller state.
660	*/
661	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
662	switch (iLUN)
663	{
664	/* LUN #0: mouse */
665	case 0:
666	pThis->Mouse.pDrv = NULL;
667	pThis->Mouse.pDrvBase = NULL;
668	break;
669
670	default:
671	AssertMsgFailed(("Invalid LUN #%d\n", iLUN));
672	break;
673	}
674	# else
675	RT_NOREF(pDevIns, iLUN, fFlags);
676	# endif
677	}
678
679
680	/**
681	* @interface_method_impl{PDMDEVREG,pfnConstruct}
682	*/
683	static DECLCALLBACK(int) bmsR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
684	{
685	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
686	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
687	PBMSSTATER3 pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PBMSSTATER3);
688	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
689	int rc;
690	RT_NOREF(iInstance);
691
692	Assert(iInstance == 0);
693
694	/*
695	* Validate and read the configuration.
696	*/
697	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "IRQ", "");
698
699	rc = pHlp->pfnCFGMQueryU8Def(pCfg, "IRQ", &pThis->irq, BMS_DEFAULT_IRQ);
700	if (RT_FAILURE(rc))
701	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to query \"IRQ\" from the config"));
702	if (pThis->irq < 2 \|\| pThis->irq > 5)
703	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Invalid \"IRQ\" config setting"));
704
705	Log(("busmouse: IRQ=%u fRCEnabled=%RTbool fR0Enabled=%RTbool\n", pThis->irq, pDevIns->fRCEnabled, pDevIns->fR0Enabled));
706
707	/*
708	* Initialize the interfaces.
709	*/
710	pThisCC->pDevIns = pDevIns;
711	pThisCC->Mouse.IBase.pfnQueryInterface = bmsR3Base_QueryMouseInterface;
712	pThisCC->Mouse.IPort.pfnPutEvent = bmsR3MousePort_PutEvent;
713	pThisCC->Mouse.IPort.pfnPutEventAbs = bmsR3MousePort_PutEventAbs;
714	pThisCC->Mouse.IPort.pfnPutEventTouchScreen = bmsR3MousePort_PutEventMultiTouch;
715	pThisCC->Mouse.IPort.pfnPutEventTouchPad = bmsR3MousePort_PutEventMultiTouch;
716
717	/*
718	* Create the interrupt timer.
719	*/
720	rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, bmsR3TimerCallback, pThis,
721	TMTIMER_FLAGS_DEFAULT_CRIT_SECT \| TMTIMER_FLAGS_NO_RING0, "Bus Mouse", &pThis->hMouseTimer);
722	AssertRCReturn(rc, rc);
723
724	/*
725	* Register I/O ports.
726	*/
727	static const IOMIOPORTDESC s_aDescs[] =
728	{
729	{ "DATA", "DATA", NULL, NULL },
730	{ "SIG", "SIG", NULL, NULL },
731	{ "CTRL", "CTRL", NULL, NULL },
732	{ "INIT", "INIT", NULL, NULL },
733	{ NULL, NULL, NULL, NULL }
734	};
735	rc = PDMDevHlpIoPortCreateAndMap(pDevIns, BMS_IO_BASE, BMS_IO_SIZE, bmsIoPortWrite, bmsIoPortRead,
736	"Bus Mouse", s_aDescs, &pThis->hIoPorts);
737	AssertRCReturn(rc, rc);
738
739	/*
740	* Register saved state.
741	*/
742	rc = PDMDevHlpSSMRegister(pDevIns, BMS_SAVED_STATE_VERSION, sizeof(*pThis), bmsR3SaveExec, bmsR3LoadExec);
743	AssertRCReturn(rc, rc);
744
745	/*
746	* Attach to the mouse driver.
747	*/
748	rc = bmsR3Attach(pDevIns, 0, PDM_TACH_FLAGS_NOT_HOT_PLUG);
749	AssertRCReturn(rc, rc);
750
751	/*
752	* Initialize the device state.
753	*/
754	bmsR3Reset(pDevIns);
755
756	return VINF_SUCCESS;
757	}
758
759	# else /* !IN_RING3 */
760
761	/**
762	* @callback_method_impl{PDMDEVREGR0,pfnConstruct}
763	*/
764	static DECLCALLBACK(int) bmsRZConstruct(PPDMDEVINS pDevIns)
765	{
766	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
767	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
768
769	int rc = PDMDevHlpIoPortSetUpContext(pDevIns, pThis->hIoPorts, bmsIoPortWrite, bmsIoPortRead, NULL /pvUser/);
770	AssertRCReturn(rc, rc);
771
772	return VINF_SUCCESS;
773	}
774
775	# endif /* !IN_RING3 */
776
777
778	/**
779	* The device registration structure.
780	*/
781	static const PDMDEVREG g_DeviceBusMouse =
782	{
783	/* .u32Version = */ PDM_DEVREG_VERSION,
784	/* .uReserved0 = */ 0,
785	/* .szName = */ "busmouse",
786	/* .fFlags = / PDM_DEVREG_FLAGS_DEFAULT_BITS /* @todo \| PDM_DEVREG_FLAGS_RZ */ \| PDM_DEVREG_FLAGS_NEW_STYLE,
787	/* .fClass = */ PDM_DEVREG_CLASS_INPUT,
788	/* .cMaxInstances = */ 1,
789	/* .uSharedVersion = */ 42,
790	/* .cbInstanceShared = */ sizeof(BMSSTATE),
791	/* .cbInstanceCC = */ CTX_EXPR(sizeof(BMSSTATER3), 0, 0),
792	/* .cbInstanceRC = */ 0,
793	/* .cMaxPciDevices = */ 0,
794	/* .cMaxMsixVectors = */ 0,
795	/* .pszDescription = */ "Microsoft Bus Mouse controller. LUN #0 is the mouse connector.",
796	# if defined(IN_RING3)
797	/* .pszRCMod = */ "VBoxDDRC.rc",
798	/* .pszR0Mod = */ "VBoxDDR0.r0",
799	/* .pfnConstruct = */ bmsR3Construct,
800	/* .pfnDestruct = */ NULL,
801	/* .pfnRelocate = */ NULL,
802	/* .pfnMemSetup = */ NULL,
803	/* .pfnPowerOn = */ NULL,
804	/* .pfnReset = */ bmsR3Reset,
805	/* .pfnSuspend = */ NULL,
806	/* .pfnResume = */ NULL,
807	/* .pfnAttach = */ bmsR3Attach,
808	/* .pfnDetach = */ bmsR3Detach,
809	/* .pfnQueryInterface = */ NULL,
810	/* .pfnInitComplete = */ NULL,
811	/* .pfnPowerOff = */ NULL,
812	/* .pfnSoftReset = */ NULL,
813	/* .pfnReserved0 = */ NULL,
814	/* .pfnReserved1 = */ NULL,
815	/* .pfnReserved2 = */ NULL,
816	/* .pfnReserved3 = */ NULL,
817	/* .pfnReserved4 = */ NULL,
818	/* .pfnReserved5 = */ NULL,
819	/* .pfnReserved6 = */ NULL,
820	/* .pfnReserved7 = */ NULL,
821	# elif defined(IN_RING0)
822	/* .pfnEarlyConstruct = */ NULL,
823	/* .pfnConstruct = */ bmsRZConstruct,
824	/* .pfnDestruct = */ NULL,
825	/* .pfnFinalDestruct = */ NULL,
826	/* .pfnRequest = */ NULL,
827	/* .pfnReserved0 = */ NULL,
828	/* .pfnReserved1 = */ NULL,
829	/* .pfnReserved2 = */ NULL,
830	/* .pfnReserved3 = */ NULL,
831	/* .pfnReserved4 = */ NULL,
832	/* .pfnReserved5 = */ NULL,
833	/* .pfnReserved6 = */ NULL,
834	/* .pfnReserved7 = */ NULL,
835	# elif defined(IN_RC)
836	/* .pfnConstruct = */ bmsRZConstruct,
837	/* .pfnReserved0 = */ NULL,
838	/* .pfnReserved1 = */ NULL,
839	/* .pfnReserved2 = */ NULL,
840	/* .pfnReserved3 = */ NULL,
841	/* .pfnReserved4 = */ NULL,
842	/* .pfnReserved5 = */ NULL,
843	/* .pfnReserved6 = */ NULL,
844	/* .pfnReserved7 = */ NULL,
845	# else
846	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
847	# endif
848	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
849	};
850
851	# ifdef VBOX_IN_EXTPACK_R3
852
853	/**
854	* @callback_method_impl{FNPDMVBOXDEVICESREGISTER}
855	*/
856	extern "C" DECLEXPORT(int) VBoxDevicesRegister(PPDMDEVREGCB pCallbacks, uint32_t u32Version)
857	{
858	AssertLogRelMsgReturn(u32Version >= VBOX_VERSION,
859	("u32Version=%#x VBOX_VERSION=%#x\n", u32Version, VBOX_VERSION),
860	VERR_EXTPACK_VBOX_VERSION_MISMATCH);
861	AssertLogRelMsgReturn(pCallbacks->u32Version == PDM_DEVREG_CB_VERSION,
862	("pCallbacks->u32Version=%#x PDM_DEVREG_CB_VERSION=%#x\n", pCallbacks->u32Version, PDM_DEVREG_CB_VERSION),
863	VERR_VERSION_MISMATCH);
864
865	return pCallbacks->pfnRegister(pCallbacks, &g_DeviceBusMouse);
866	}
867
868	# else /* !VBOX_IN_EXTPACK_R3 */
869
870	/** Pointer to the ring-0 device registrations for the Bus Mouse. */
871	static PCPDMDEVREGR0 g_apDevRegs[] =
872	{
873	&g_DeviceBusMouse,
874	};
875
876	/** Module device registration record for the Bus Mouse. */
877	static PDMDEVMODREGR0 g_ModDevReg =
878	{
879	/* .u32Version = */ PDM_DEVMODREGR0_VERSION,
880	/* .cDevRegs = */ RT_ELEMENTS(g_apDevRegs),
881	/* .papDevRegs = */ &g_apDevRegs[0],
882	/* .hMod = */ NULL,
883	/* .ListEntry = */ { NULL, NULL },
884	};
885
886	DECLEXPORT(int) ModuleInit(void *hMod)
887	{
888	LogFlow(("VBoxBusMouseRZ/ModuleInit: %p\n", hMod));
889	return PDMR0DeviceRegisterModule(hMod, &g_ModDevReg);
890	}
891
892	DECLEXPORT(void) ModuleTerm(void *hMod)
893	{
894	LogFlow(("VBoxBusMouseRZ/ModuleTerm: %p\n", hMod));
895	PDMR0DeviceDeregisterModule(hMod, &g_ModDevReg);
896	}
897
898	# endif /* !VBOX_IN_EXTPACK_R3 */
899
900	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
901

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source: vbox/trunk/src/VBox/ExtPacks/BusMouseSample/DevBusMouse.cpp@ 107044

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