DevBusMouse.cpp@ 84395

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1	/* $Id: DevBusMouse.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* BusMouse - Microsoft Bus (parallel) mouse controller device.
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 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	/*********************************************************************************************************************************
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	pDrv->pfnReportModes(pDrv, fEnabled, false, false);
220	}
221
222	/**
223	* Process a mouse event coming from the host.
224	*/
225	static void bmsR3MouseEvent(PBMSSTATE pThis, int dx, int dy, int dz, int dw, int buttons_state)
226	{
227	LogRel3(("%s: dx=%d, dy=%d, dz=%d, dw=%d, buttons_state=0x%x\n",
228	__PRETTY_FUNCTION__, dx, dy, dz, dw, buttons_state));
229
230	/* Only record X/Y movement and buttons. */
231	pThis->mouse_dx += dx;
232	pThis->mouse_dy += dy;
233	pThis->mouse_buttons = buttons_state;
234	}
235
236	/**
237	* @callback_method_impl{FNTMTIMERDEV}
238	*/
239	static DECLCALLBACK(void) bmsR3TimerCallback(PPDMDEVINS pDevIns, PTMTIMER pTimer, void *pvUser)
240	{
241	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
242	PBMSSTATER3 pThisCC = PDMDEVINS_2_DATA(pDevIns, PBMSSTATER3);
243	uint8_t irq_bit;
244	RT_NOREF(pvUser, pTimer);
245
246	/* Toggle the IRQ line if interrupts are enabled. */
247	irq_bit = BMS_IRQ_BIT(pThis->irq);
248
249	if (pThis->port_c & irq_bit)
250	{
251	if (!(pThis->port_c & BMS_CTL_INT_DIS))
252	PDMDevHlpISASetIrq(pDevIns, pThis->irq, PDM_IRQ_LEVEL_LOW);
253	pThis->port_c &= ~irq_bit;
254	}
255	else
256	{
257	pThis->port_c \|= irq_bit;
258	if (!(pThis->port_c & BMS_CTL_INT_DIS))
259	PDMDevHlpISASetIrq(pDevIns, pThis->irq, PDM_IRQ_LEVEL_HIGH);
260	}
261
262	/* Handle enabling/disabling of the mouse interface. */
263	if (pThis->port_c & BMS_CTL_INT_DIS)
264	{
265	if (pThis->disable_counter)
266	--pThis->disable_counter;
267
268	if (pThis->disable_counter == 0 && pThis->mouse_enabled)
269	{
270	pThis->mouse_enabled = false;
271	bmsR3UpdateDownstreamStatus(pThis, pThisCC);
272	}
273	}
274	else
275	{
276	pThis->disable_counter = 8; /* Re-arm the disable countdown. */
277	if (!pThis->mouse_enabled)
278	{
279	pThis->mouse_enabled = true;
280	bmsR3UpdateDownstreamStatus(pThis, pThisCC);
281	}
282	}
283
284	/* Re-arm the timer. */
285	PDMDevHlpTimerSetMillies(pDevIns, pThis->hMouseTimer, pThis->cTimerPeriodMs);
286	}
287
288	# endif /* IN_RING3 */
289
290	static void bmsSetReportedButtons(PBMSSTATE pThis, unsigned fButtons, unsigned fButtonMask)
291	{
292	pThis->mouse_buttons_reported \|= (fButtons & fButtonMask);
293	pThis->mouse_buttons_reported &= (fButtons \| ~fButtonMask);
294	}
295
296	/**
297	* Update the internal state after a write to port C.
298	*/
299	static void bmsUpdateCtrl(PPDMDEVINS pDevIns, PBMSSTATE 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	bmsSetReportedButtons(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(pDevIns, pThis->irq, PDM_IRQ_LEVEL_LOW);
351	pThis->port_c &= ~BMS_IRQ_BIT(pThis->irq);
352	}
353	}
354
355	/**
356	* @callback_method_impl{FNIOMIOPORTNEWIN}
357	*/
358	static DECLCALLBACK(VBOXSTRICTRC) bmsIoPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT offPort, uint32_t pu32, unsigned cb)
359	{
360	RT_NOREF(pvUser);
361	if (cb == 1)
362	{
363	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
364	uint32_t uValue;
365
366	switch (offPort)
367	{
368	case BMS_PORT_DATA:
369	/* Read port A. */
370	uValue = pThis->port_a;
371	break;
372	case BMS_PORT_SIG:
373	/* Read port B. */
374	uValue = pThis->port_b;
375	break;
376	case BMS_PORT_CTRL:
377	/* Read port C. */
378	uValue = pThis->port_c;
379	/* Some Microsoft driver code reads the control port 10,000 times when
380	* determining the IRQ level. This can occur faster than the IRQ line
381	* transitions and the detection fails. To work around this, we force
382	* the IRQ bit to toggle every once in a while.
383	*/
384	if (pThis->irq_toggle_counter)
385	pThis->irq_toggle_counter--;
386	else
387	{
388	pThis->irq_toggle_counter = 1000;
389	uValue ^= BMS_IRQ_BIT(pThis->irq);
390	}
391	break;
392	case BMS_PORT_INIT:
393	/* Read the 8255A control port. */
394	uValue = pThis->ctrl_port;
395	break;
396	default:
397	ASSERT_GUEST_MSG_FAILED(("invalid port %#x\n", offPort));
398	uValue = 0xff;
399	break;
400	}
401
402	*pu32 = uValue;
403	Log2(("mouIoPortRead: offPort=%#x+%x cb=%d *pu32=%#x\n", BMS_IO_BASE, offPort, cb, uValue));
404	LogRel3(("mouIoPortRead: read port %u: %#04x\n", offPort, uValue));
405	return VINF_SUCCESS;
406	}
407	ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d\n", offPort, cb));
408	return VERR_IOM_IOPORT_UNUSED;
409	}
410
411	/**
412	* @callback_method_impl{FNIOMIOPORTNEWOUT}
413	*/
414	static DECLCALLBACK(VBOXSTRICTRC) bmsIoPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT offPort, uint32_t u32, unsigned cb)
415	{
416	RT_NOREF(pvUser);
417	if (cb == 1)
418	{
419	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
420	LogRel3(("mouIoPortWrite: write port %u: %#04x\n", offPort, u32));
421
422	switch (offPort)
423	{
424	case BMS_PORT_SIG:
425	/* Update port B. */
426	pThis->port_b = u32;
427	break;
428	case BMS_PORT_DATA:
429	/* Do nothing, port A is not writable. */
430	break;
431	case BMS_PORT_INIT:
432	pThis->ctrl_port = u32;
433	break;
434	case BMS_PORT_CTRL:
435	/* Update the high nibble of port C. */
436	pThis->port_c = (u32 & 0xF0) \| (pThis->port_c & 0x0F);
437	bmsUpdateCtrl(pDevIns, pThis);
438	break;
439	default:
440	ASSERT_GUEST_MSG_FAILED(("invalid port %#x\n", offPort));
441	break;
442	}
443
444	Log2(("mouIoPortWrite: offPort=%#x+%u cb=%d u32=%#x\n", BMS_IO_BASE, offPort, cb, u32));
445	}
446	else
447	ASSERT_GUEST_MSG_FAILED(("offPort=%#x cb=%d\n", offPort, cb));
448	return VINF_SUCCESS;
449	}
450
451	# ifdef IN_RING3
452
453	/**
454	* @callback_method_impl{FNSSMDEVSAVEEXEC}
455	*/
456	static DECLCALLBACK(int) bmsR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle)
457	{
458	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
459	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
460
461	/* 8255A state. */
462	pHlp->pfnSSMPutU8(pSSMHandle, pThis->port_a);
463	pHlp->pfnSSMPutU8(pSSMHandle, pThis->port_b);
464	pHlp->pfnSSMPutU8(pSSMHandle, pThis->port_c);
465	pHlp->pfnSSMPutU8(pSSMHandle, pThis->ctrl_port);
466	/* Other device state. */
467	pHlp->pfnSSMPutU8(pSSMHandle, pThis->cnt_held);
468	pHlp->pfnSSMPutU8(pSSMHandle, pThis->held_dx);
469	pHlp->pfnSSMPutU8(pSSMHandle, pThis->held_dy);
470	pHlp->pfnSSMPutU8(pSSMHandle, pThis->irq);
471	pHlp->pfnSSMPutU32(pSSMHandle, pThis->cTimerPeriodMs);
472	/* Current mouse state deltas. */
473	pHlp->pfnSSMPutS32(pSSMHandle, pThis->mouse_dx);
474	pHlp->pfnSSMPutS32(pSSMHandle, pThis->mouse_dy);
475	pHlp->pfnSSMPutU8(pSSMHandle, pThis->mouse_buttons_reported);
476	/* Timer. */
477	return PDMDevHlpTimerSave(pDevIns, pThis->hMouseTimer, pSSMHandle);
478	}
479
480	/**
481	* @callback_method_impl{FNSSMDEVLOADEXEC}
482	*/
483	static DECLCALLBACK(int) bmsR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle, uint32_t uVersion, uint32_t uPass)
484	{
485	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
486	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
487
488	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
489
490	if (uVersion > BMS_SAVED_STATE_VERSION)
491	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
492
493	/* 8255A state. */
494	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->port_a);
495	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->port_b);
496	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->port_c);
497	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->ctrl_port);
498	/* Other device state. */
499	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->cnt_held);
500	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->held_dx);
501	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->held_dy);
502	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->irq);
503	pHlp->pfnSSMGetU32(pSSMHandle, &pThis->cTimerPeriodMs);
504	/* Current mouse state deltas. */
505	pHlp->pfnSSMGetS32(pSSMHandle, &pThis->mouse_dx);
506	pHlp->pfnSSMGetS32(pSSMHandle, &pThis->mouse_dy);
507	pHlp->pfnSSMGetU8(pSSMHandle, &pThis->mouse_buttons_reported);
508	/* Timer. */
509	return PDMDevHlpTimerLoad(pDevIns, pThis->hMouseTimer, pSSMHandle);
510	}
511
512	/**
513	* Reset notification.
514	*
515	* @returns VBox status code.
516	* @param pDevIns The device instance data.
517	*/
518	static DECLCALLBACK(void) bmsR3Reset(PPDMDEVINS pDevIns)
519	{
520	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
521	PBMSSTATER3 pThisCC = PDMDEVINS_2_DATA(pDevIns, PBMSSTATER3);
522
523	/* Reinitialize the timer. */
524	pThis->cTimerPeriodMs = BMS_IRQ_PERIOD_MS / 2;
525	PDMDevHlpTimerSetMillies(pDevIns, pThis->hMouseTimer, pThis->cTimerPeriodMs);
526
527	/* Clear the device setup. */
528	pThis->port_a = pThis->port_b = 0;
529	pThis->port_c = BMS_CTL_INT_DIS; /* Interrupts disabled. */
530	pThis->ctrl_port = 0x91; /* Default 8255A setup. */
531
532	/* Clear motion/button state. */
533	pThis->cnt_held = false;
534	pThis->mouse_dx = pThis->mouse_dy = 0;
535	pThis->mouse_buttons = 0;
536	pThis->mouse_buttons_reported = 0;
537	pThis->disable_counter = 0;
538	pThis->irq_toggle_counter = 1000;
539
540	if (pThis->mouse_enabled)
541	{
542	pThis->mouse_enabled = false;
543	bmsR3UpdateDownstreamStatus(pThis, pThisCC);
544	}
545	}
546
547
548	/* -=-=-=-=-=- Mouse: IBase -=-=-=-=-=- */
549
550	/**
551	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
552	*/
553	static DECLCALLBACK(void ) bmsR3Base_QueryMouseInterface(PPDMIBASE pInterface, const char pszIID)
554	{
555	PBMSSTATER3 pThisCC = RT_FROM_MEMBER(pInterface, BMSSTATER3, Mouse.IBase);
556	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThisCC->Mouse.IBase);
557	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUSEPORT, &pThisCC->Mouse.IPort);
558	return NULL;
559	}
560
561
562	/* -=-=-=-=-=- Mouse: IMousePort -=-=-=-=-=- */
563
564	/**
565	* @interface_method_impl{PDMIMOUSEPORT,pfnPutEvent}
566	*/
567	static DECLCALLBACK(int) bmsR3MousePort_PutEvent(PPDMIMOUSEPORT pInterface, int32_t dx,
568	int32_t dy, int32_t dz, int32_t dw,
569	uint32_t fButtons)
570	{
571	PBMSSTATER3 pThisCC = RT_FROM_MEMBER(pInterface, BMSSTATER3, Mouse.IPort);
572	PPDMDEVINS pDevIns = pThisCC->pDevIns;
573	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
574	int rc = PDMDevHlpCritSectEnter(pDevIns, pDevIns->CTX_SUFF(pCritSectRo), VERR_SEM_BUSY);
575	AssertReleaseRC(rc);
576
577	bmsR3MouseEvent(pThis, dx, dy, dz, dw, fButtons);
578
579	PDMDevHlpCritSectLeave(pDevIns, pDevIns->CTX_SUFF(pCritSectRo));
580	return VINF_SUCCESS;
581	}
582
583	/**
584	* @interface_method_impl{PDMIMOUSEPORT,pfnPutEventAbs}
585	*/
586	static DECLCALLBACK(int) bmsR3MousePort_PutEventAbs(PPDMIMOUSEPORT pInterface, uint32_t x, uint32_t y,
587	int32_t dz, int32_t dw, uint32_t fButtons)
588	{
589	RT_NOREF(pInterface, x, y, dz, dw, fButtons);
590	AssertFailedReturn(VERR_NOT_SUPPORTED);
591	}
592
593	/**
594	* @interface_method_impl{PDMIMOUSEPORT,pfnPutEventMultiTouch}
595	*/
596	static DECLCALLBACK(int) bmsR3MousePort_PutEventMultiTouch(PPDMIMOUSEPORT pInterface, uint8_t cContacts,
597	const uint64_t *pau64Contacts, uint32_t u32ScanTime)
598	{
599	RT_NOREF(pInterface, cContacts, pau64Contacts, u32ScanTime);
600	AssertFailedReturn(VERR_NOT_SUPPORTED);
601	}
602
603	/* -=-=-=-=-=- setup code -=-=-=-=-=- */
604
605
606	/**
607	* @interface_method_impl{PDMDEVREGR3,pfnAttach}
608	*/
609	static DECLCALLBACK(int) bmsR3Attach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
610	{
611	PBMSSTATER3 pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PBMSSTATER3);
612	int rc;
613
614	AssertMsgReturn(fFlags & PDM_TACH_FLAGS_NOT_HOT_PLUG,
615	("Bus mouse device does not support hotplugging\n"),
616	VERR_INVALID_PARAMETER);
617
618	switch (iLUN)
619	{
620	/* LUN #0: mouse */
621	case 0:
622	rc = PDMDevHlpDriverAttach(pDevIns, iLUN, &pThisCC->Mouse.IBase, &pThisCC->Mouse.pDrvBase, "Bus Mouse Port");
623	if (RT_SUCCESS(rc))
624	{
625	pThisCC->Mouse.pDrv = PDMIBASE_QUERY_INTERFACE(pThisCC->Mouse.pDrvBase, PDMIMOUSECONNECTOR);
626	if (!pThisCC->Mouse.pDrv)
627	{
628	AssertLogRelMsgFailed(("LUN #0 doesn't have a mouse interface! rc=%Rrc\n", rc));
629	rc = VERR_PDM_MISSING_INTERFACE;
630	}
631	}
632	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
633	{
634	Log(("%s/%d: warning: no driver attached to LUN #0!\n", pDevIns->pReg->szName, pDevIns->iInstance));
635	rc = VINF_SUCCESS;
636	}
637	else
638	AssertLogRelMsgFailed(("Failed to attach LUN #0! rc=%Rrc\n", rc));
639	break;
640
641	default:
642	AssertMsgFailed(("Invalid LUN #%d\n", iLUN));
643	return VERR_PDM_NO_SUCH_LUN;
644	}
645
646	return rc;
647	}
648
649
650	/**
651	* @interface_method_impl{PDMDEVREGR3,pfnDetach}
652	*/
653	static DECLCALLBACK(void) bmsR3Detach(PPDMDEVINS pDevIns, unsigned iLUN, uint32_t fFlags)
654	{
655	# if 0
656	/*
657	* Reset the interfaces and update the controller state.
658	*/
659	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
660	switch (iLUN)
661	{
662	/* LUN #0: mouse */
663	case 0:
664	pThis->Mouse.pDrv = NULL;
665	pThis->Mouse.pDrvBase = NULL;
666	break;
667
668	default:
669	AssertMsgFailed(("Invalid LUN #%d\n", iLUN));
670	break;
671	}
672	# else
673	RT_NOREF(pDevIns, iLUN, fFlags);
674	# endif
675	}
676
677
678	/**
679	* @interface_method_impl{PDMDEVREG,pfnConstruct}
680	*/
681	static DECLCALLBACK(int) bmsR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
682	{
683	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
684	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
685	PBMSSTATER3 pThisCC = PDMDEVINS_2_DATA_CC(pDevIns, PBMSSTATER3);
686	PCPDMDEVHLPR3 pHlp = pDevIns->pHlpR3;
687	int rc;
688	RT_NOREF(iInstance);
689
690	Assert(iInstance == 0);
691
692	/*
693	* Validate and read the configuration.
694	*/
695	PDMDEV_VALIDATE_CONFIG_RETURN(pDevIns, "IRQ", "");
696
697	rc = pHlp->pfnCFGMQueryU8Def(pCfg, "IRQ", &pThis->irq, BMS_DEFAULT_IRQ);
698	if (RT_FAILURE(rc))
699	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Failed to query \"IRQ\" from the config"));
700	if (pThis->irq < 2 \|\| pThis->irq > 5)
701	return PDMDEV_SET_ERROR(pDevIns, rc, N_("Invalid \"IRQ\" config setting"));
702
703	Log(("busmouse: IRQ=%u fRCEnabled=%RTbool fR0Enabled=%RTbool\n", pThis->irq, pDevIns->fRCEnabled, pDevIns->fR0Enabled));
704
705	/*
706	* Initialize the interfaces.
707	*/
708	pThisCC->pDevIns = pDevIns;
709	pThisCC->Mouse.IBase.pfnQueryInterface = bmsR3Base_QueryMouseInterface;
710	pThisCC->Mouse.IPort.pfnPutEvent = bmsR3MousePort_PutEvent;
711	pThisCC->Mouse.IPort.pfnPutEventAbs = bmsR3MousePort_PutEventAbs;
712	pThisCC->Mouse.IPort.pfnPutEventMultiTouch = bmsR3MousePort_PutEventMultiTouch;
713
714	/*
715	* Create the interrupt timer.
716	*/
717	rc = PDMDevHlpTimerCreate(pDevIns, TMCLOCK_VIRTUAL, bmsR3TimerCallback, pThis,
718	TMTIMER_FLAGS_DEFAULT_CRIT_SECT, "Bus Mouse Timer", &pThis->hMouseTimer);
719	AssertRCReturn(rc, rc);
720
721	/*
722	* Register I/O ports.
723	*/
724	static const IOMIOPORTDESC s_aDescs[] =
725	{
726	{ "DATA", "DATA", NULL, NULL },
727	{ "SIG", "SIG", NULL, NULL },
728	{ "CTRL", "CTRL", NULL, NULL },
729	{ "INIT", "INIT", NULL, NULL },
730	{ NULL, NULL, NULL, NULL }
731	};
732	rc = PDMDevHlpIoPortCreateAndMap(pDevIns, BMS_IO_BASE, BMS_IO_SIZE, bmsIoPortWrite, bmsIoPortRead,
733	"Bus Mouse", s_aDescs, &pThis->hIoPorts);
734	AssertRCReturn(rc, rc);
735
736	/*
737	* Register saved state.
738	*/
739	rc = PDMDevHlpSSMRegister(pDevIns, BMS_SAVED_STATE_VERSION, sizeof(*pThis), bmsR3SaveExec, bmsR3LoadExec);
740	AssertRCReturn(rc, rc);
741
742	/*
743	* Attach to the mouse driver.
744	*/
745	rc = bmsR3Attach(pDevIns, 0, PDM_TACH_FLAGS_NOT_HOT_PLUG);
746	AssertRCReturn(rc, rc);
747
748	/*
749	* Initialize the device state.
750	*/
751	bmsR3Reset(pDevIns);
752
753	return VINF_SUCCESS;
754	}
755
756	# else /* !IN_RING3 */
757
758	/**
759	* @callback_method_impl{PDMDEVREGR0,pfnConstruct}
760	*/
761	static DECLCALLBACK(int) bmsRZConstruct(PPDMDEVINS pDevIns)
762	{
763	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
764	PBMSSTATE pThis = PDMDEVINS_2_DATA(pDevIns, PBMSSTATE);
765
766	int rc = PDMDevHlpIoPortSetUpContext(pDevIns, pThis->hIoPorts, bmsIoPortWrite, bmsIoPortRead, NULL /pvUser/);
767	AssertRCReturn(rc, rc);
768
769	return VINF_SUCCESS;
770	}
771
772	# endif /* !IN_RING3 */
773
774
775	/**
776	* The device registration structure.
777	*/
778	static const PDMDEVREG g_DeviceBusMouse =
779	{
780	/* .u32Version = */ PDM_DEVREG_VERSION,
781	/* .uReserved0 = */ 0,
782	/* .szName = */ "busmouse",
783	/* .fFlags = / PDM_DEVREG_FLAGS_DEFAULT_BITS /* @todo \| PDM_DEVREG_FLAGS_RZ */ \| PDM_DEVREG_FLAGS_NEW_STYLE,
784	/* .fClass = */ PDM_DEVREG_CLASS_INPUT,
785	/* .cMaxInstances = */ 1,
786	/* .uSharedVersion = */ 42,
787	/* .cbInstanceShared = */ sizeof(BMSSTATE),
788	/* .cbInstanceCC = */ CTX_EXPR(sizeof(BMSSTATER3), 0, 0),
789	/* .cbInstanceRC = */ 0,
790	/* .cMaxPciDevices = */ 0,
791	/* .cMaxMsixVectors = */ 0,
792	/* .pszDescription = */ "Microsoft Bus Mouse controller. LUN #0 is the mouse connector.",
793	# if defined(IN_RING3)
794	/* .pszRCMod = */ "VBoxDDRC.rc",
795	/* .pszR0Mod = */ "VBoxDDR0.r0",
796	/* .pfnConstruct = */ bmsR3Construct,
797	/* .pfnDestruct = */ NULL,
798	/* .pfnRelocate = */ NULL,
799	/* .pfnMemSetup = */ NULL,
800	/* .pfnPowerOn = */ NULL,
801	/* .pfnReset = */ bmsR3Reset,
802	/* .pfnSuspend = */ NULL,
803	/* .pfnResume = */ NULL,
804	/* .pfnAttach = */ bmsR3Attach,
805	/* .pfnDetach = */ bmsR3Detach,
806	/* .pfnQueryInterface = */ NULL,
807	/* .pfnInitComplete = */ NULL,
808	/* .pfnPowerOff = */ NULL,
809	/* .pfnSoftReset = */ NULL,
810	/* .pfnReserved0 = */ NULL,
811	/* .pfnReserved1 = */ NULL,
812	/* .pfnReserved2 = */ NULL,
813	/* .pfnReserved3 = */ NULL,
814	/* .pfnReserved4 = */ NULL,
815	/* .pfnReserved5 = */ NULL,
816	/* .pfnReserved6 = */ NULL,
817	/* .pfnReserved7 = */ NULL,
818	# elif defined(IN_RING0)
819	/* .pfnEarlyConstruct = */ NULL,
820	/* .pfnConstruct = */ bmsRZConstruct,
821	/* .pfnDestruct = */ NULL,
822	/* .pfnFinalDestruct = */ NULL,
823	/* .pfnRequest = */ NULL,
824	/* .pfnReserved0 = */ NULL,
825	/* .pfnReserved1 = */ NULL,
826	/* .pfnReserved2 = */ NULL,
827	/* .pfnReserved3 = */ NULL,
828	/* .pfnReserved4 = */ NULL,
829	/* .pfnReserved5 = */ NULL,
830	/* .pfnReserved6 = */ NULL,
831	/* .pfnReserved7 = */ NULL,
832	# elif defined(IN_RC)
833	/* .pfnConstruct = */ bmsRZConstruct,
834	/* .pfnReserved0 = */ NULL,
835	/* .pfnReserved1 = */ NULL,
836	/* .pfnReserved2 = */ NULL,
837	/* .pfnReserved3 = */ NULL,
838	/* .pfnReserved4 = */ NULL,
839	/* .pfnReserved5 = */ NULL,
840	/* .pfnReserved6 = */ NULL,
841	/* .pfnReserved7 = */ NULL,
842	# else
843	# error "Not in IN_RING3, IN_RING0 or IN_RC!"
844	# endif
845	/* .u32VersionEnd = */ PDM_DEVREG_VERSION
846	};
847
848	# ifdef VBOX_IN_EXTPACK_R3
849
850	/**
851	* @callback_method_impl{FNPDMVBOXDEVICESREGISTER}
852	*/
853	extern "C" DECLEXPORT(int) VBoxDevicesRegister(PPDMDEVREGCB pCallbacks, uint32_t u32Version)
854	{
855	AssertLogRelMsgReturn(u32Version >= VBOX_VERSION,
856	("u32Version=%#x VBOX_VERSION=%#x\n", u32Version, VBOX_VERSION),
857	VERR_EXTPACK_VBOX_VERSION_MISMATCH);
858	AssertLogRelMsgReturn(pCallbacks->u32Version == PDM_DEVREG_CB_VERSION,
859	("pCallbacks->u32Version=%#x PDM_DEVREG_CB_VERSION=%#x\n", pCallbacks->u32Version, PDM_DEVREG_CB_VERSION),
860	VERR_VERSION_MISMATCH);
861
862	return pCallbacks->pfnRegister(pCallbacks, &g_DeviceBusMouse);
863	}
864
865	# else /* !VBOX_IN_EXTPACK_R3 */
866
867	/** Pointer to the ring-0 device registrations for the Bus Mouse. */
868	static PCPDMDEVREGR0 g_apDevRegs[] =
869	{
870	&g_DeviceBusMouse,
871	};
872
873	/** Module device registration record for the Bus Mouse. */
874	static PDMDEVMODREGR0 g_ModDevReg =
875	{
876	/* .u32Version = */ PDM_DEVMODREGR0_VERSION,
877	/* .cDevRegs = */ RT_ELEMENTS(g_apDevRegs),
878	/* .papDevRegs = */ &g_apDevRegs[0],
879	/* .hMod = */ NULL,
880	/* .ListEntry = */ { NULL, NULL },
881	};
882
883	DECLEXPORT(int) ModuleInit(void *hMod)
884	{
885	LogFlow(("VBoxBusMouseRZ/ModuleInit: %p\n", hMod));
886	return PDMR0DeviceRegisterModule(hMod, &g_ModDevReg);
887	}
888
889	DECLEXPORT(void) ModuleTerm(void *hMod)
890	{
891	LogFlow(("VBoxBusMouseRZ/ModuleTerm: %p\n", hMod));
892	PDMR0DeviceDeregisterModule(hMod, &g_ModDevReg);
893	}
894
895	# endif /* !VBOX_IN_EXTPACK_R3 */
896
897	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
898

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source: vbox/trunk/src/VBox/ExtPacks/BusMouseSample/DevBusMouse.cpp@ 84395

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