DevParallel.cpp@ 78403

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1	/* $Id: DevParallel.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2	/** @file
3	* DevParallel - Parallel (Port) Device Emulation.
4	*
5	* Contributed by: Alexander Eichner
6	* Based on DevSerial.cpp
7	*/
8
9	/*
10	* Copyright (C) 2006-2019 Oracle Corporation
11	*
12	* This file is part of VirtualBox Open Source Edition (OSE), as
13	* available from http://www.virtualbox.org. This file is free software;
14	* you can redistribute it and/or modify it under the terms of the GNU
15	* General Public License (GPL) as published by the Free Software
16	* Foundation, in version 2 as it comes in the "COPYING" file of the
17	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
18	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
19	*/
20
21
22	/*********************************************************************************************************************************
23	* Header Files *
24	*********************************************************************************************************************************/
25	#define LOG_GROUP LOG_GROUP_DEV_PARALLEL
26	#include <VBox/vmm/pdmdev.h>
27	#include <iprt/assert.h>
28	#include <iprt/uuid.h>
29	#include <iprt/string.h>
30	#include <iprt/semaphore.h>
31
32	#include "VBoxDD.h"
33
34
35	/*********************************************************************************************************************************
36	* Defined Constants And Macros *
37	*********************************************************************************************************************************/
38	#define PARALLEL_SAVED_STATE_VERSION 1
39
40	/* defines for accessing the register bits */
41	#define LPT_STATUS_BUSY 0x80
42	#define LPT_STATUS_ACK 0x40
43	#define LPT_STATUS_PAPER_OUT 0x20
44	#define LPT_STATUS_SELECT_IN 0x10
45	#define LPT_STATUS_ERROR 0x08
46	#define LPT_STATUS_IRQ 0x04
47	#define LPT_STATUS_BIT1 0x02 /* reserved (only for completeness) */
48	#define LPT_STATUS_EPP_TIMEOUT 0x01
49
50	#define LPT_CONTROL_BIT7 0x80 /* reserved (only for completeness) */
51	#define LPT_CONTROL_BIT6 0x40 /* reserved (only for completeness) */
52	#define LPT_CONTROL_ENABLE_BIDIRECT 0x20
53	#define LPT_CONTROL_ENABLE_IRQ_VIA_ACK 0x10
54	#define LPT_CONTROL_SELECT_PRINTER 0x08
55	#define LPT_CONTROL_RESET 0x04
56	#define LPT_CONTROL_AUTO_LINEFEED 0x02
57	#define LPT_CONTROL_STROBE 0x01
58
59	/** mode defines for the extended control register */
60	#define LPT_ECP_ECR_CHIPMODE_MASK 0xe0
61	#define LPT_ECP_ECR_CHIPMODE_GET_BITS(reg) ((reg) >> 5)
62	#define LPT_ECP_ECR_CHIPMODE_SET_BITS(val) ((val) << 5)
63	#define LPT_ECP_ECR_CHIPMODE_CONFIGURATION 0x07
64	#define LPT_ECP_ECR_CHIPMODE_FIFO_TEST 0x06
65	#define LPT_ECP_ECR_CHIPMODE_RESERVED 0x05
66	#define LPT_ECP_ECR_CHIPMODE_EPP 0x04
67	#define LPT_ECP_ECR_CHIPMODE_ECP_FIFO 0x03
68	#define LPT_ECP_ECR_CHIPMODE_PP_FIFO 0x02
69	#define LPT_ECP_ECR_CHIPMODE_BYTE 0x01
70	#define LPT_ECP_ECR_CHIPMODE_COMPAT 0x00
71
72	/** FIFO status bits in extended control register */
73	#define LPT_ECP_ECR_FIFO_MASK 0x03
74	#define LPT_ECP_ECR_FIFO_SOME_DATA 0x00
75	#define LPT_ECP_ECR_FIFO_FULL 0x02
76	#define LPT_ECP_ECR_FIFO_EMPTY 0x01
77
78	#define LPT_ECP_CONFIGA_FIFO_WITDH_MASK 0x70
79	#define LPT_ECP_CONFIGA_FIFO_WIDTH_GET_BITS(reg) ((reg) >> 4)
80	#define LPT_ECP_CONFIGA_FIFO_WIDTH_SET_BITS(val) ((val) << 4)
81	#define LPT_ECP_CONFIGA_FIFO_WIDTH_16 0x00
82	#define LPT_ECP_CONFIGA_FIFO_WIDTH_32 0x20
83	#define LPT_ECP_CONFIGA_FIFO_WIDTH_8 0x10
84
85	#define LPT_ECP_FIFO_DEPTH 2
86
87
88	/*********************************************************************************************************************************
89	* Structures and Typedefs *
90	*********************************************************************************************************************************/
91	/**
92	* Parallel device state.
93	*
94	* @implements PDMIBASE
95	* @implements PDMIHOSTPARALLELPORT
96	*/
97	typedef struct PARALLELPORT
98	{
99	/** Pointer to the device instance - R3 Ptr */
100	PPDMDEVINSR3 pDevInsR3;
101	/** Pointer to the device instance - R0 Ptr */
102	PPDMDEVINSR0 pDevInsR0;
103	/** Pointer to the device instance - RC Ptr */
104	PPDMDEVINSRC pDevInsRC;
105	/** Alignment. */
106	RTRCPTR Alignment0;
107	/** LUN\#0: The base interface. */
108	PDMIBASE IBase;
109	/** LUN\#0: The host device port interface. */
110	PDMIHOSTPARALLELPORT IHostParallelPort;
111	/** Pointer to the attached base driver. */
112	R3PTRTYPE(PPDMIBASE) pDrvBase;
113	/** Pointer to the attached host device. */
114	R3PTRTYPE(PPDMIHOSTPARALLELCONNECTOR) pDrvHostParallelConnector;
115	/** Flag whether the device has its RC component enabled. */
116	bool fGCEnabled;
117	/** Flag whether the device has its R0 component enabled. */
118	bool fR0Enabled;
119	/** Flag whether an EPP timeout occurred (error handling). */
120	bool fEppTimeout;
121	/** Base I/O port of the parallel port. */
122	RTIOPORT IOBase;
123	/** IRQ number assigned ot the parallel port. */
124	int iIrq;
125	/** Data register. */
126	uint8_t regData;
127	/** Status register. */
128	uint8_t regStatus;
129	/** Control register. */
130	uint8_t regControl;
131	/** EPP address register. */
132	uint8_t regEppAddr;
133	/** EPP data register. */
134	uint8_t regEppData;
135	/** More alignment. */
136	uint32_t u32Alignment;
137
138	#if 0 /* Data for ECP implementation, currently unused. */
139	uint8_t reg_ecp_ecr;
140	uint8_t reg_ecp_base_plus_400h; /* has different meanings */
141	uint8_t reg_ecp_config_b;
142
143	/** The ECP FIFO implementation*/
144	uint8_t ecp_fifo[LPT_ECP_FIFO_DEPTH];
145	uint8_t abAlignemnt[2];
146	int act_fifo_pos_write;
147	int act_fifo_pos_read;
148	#endif
149	} PARALLELPORT, *PPARALLELPORT;
150
151	#ifndef VBOX_DEVICE_STRUCT_TESTCASE
152
153	#define PDMIHOSTPARALLELPORT_2_PARALLELPORT(pInstance) ( (PARALLELPORT *)((uintptr_t)(pInterface) - RT_UOFFSETOF(PARALLELPORT, IHostParallelPort)) )
154	#define PDMIHOSTDEVICEPORT_2_PARALLELPORT(pInstance) ( (PARALLELPORT *)((uintptr_t)(pInterface) - RT_UOFFSETOF(PARALLELPORT, IHostDevicePort)) )
155	#define PDMIBASE_2_PARALLELPORT(pInstance) ( (PARALLELPORT *)((uintptr_t)(pInterface) - RT_UOFFSETOF(PARALLELPORT, IBase)) )
156
157
158	/*********************************************************************************************************************************
159	* Internal Functions *
160	*********************************************************************************************************************************/
161	RT_C_DECLS_BEGIN
162	PDMBOTHCBDECL(int) parallelIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT uPort, uint32_t pu32, unsigned cb);
163	PDMBOTHCBDECL(int) parallelIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t u32, unsigned cb);
164	#if 0
165	PDMBOTHCBDECL(int) parallelIOPortReadECP(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb);
166	PDMBOTHCBDECL(int) parallelIOPortWriteECP(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb);
167	#endif
168	RT_C_DECLS_END
169
170
171	#ifdef IN_RING3
172	static void parallelR3IrqSet(PARALLELPORT *pThis)
173	{
174	if (pThis->regControl & LPT_CONTROL_ENABLE_IRQ_VIA_ACK)
175	{
176	LogFlowFunc(("%d 1\n", pThis->iIrq));
177	PDMDevHlpISASetIrqNoWait(pThis->CTX_SUFF(pDevIns), pThis->iIrq, 1);
178	}
179	}
180
181	static void parallelR3IrqClear(PARALLELPORT *pThis)
182	{
183	LogFlowFunc(("%d 0\n", pThis->iIrq));
184	PDMDevHlpISASetIrqNoWait(pThis->CTX_SUFF(pDevIns), pThis->iIrq, 0);
185	}
186	#endif
187
188	#if 0
189	static int parallel_ioport_write_ecp(void *opaque, uint32_t addr, uint32_t val)
190	{
191	PARALLELPORT s = (PARALLELPORT )opaque;
192	unsigned char ch;
193
194	addr &= 7;
195	LogFlow(("parallel: write ecp addr=0x%02x val=0x%02x\n", addr, val));
196	ch = val;
197	switch (addr) {
198	default:
199	case 0:
200	if (LPT_ECP_ECR_CHIPMODE_GET_BITS(s->reg_ecp_ecr) == LPT_ECP_ECR_CHIPMODE_FIFO_TEST) {
201	s->ecp_fifo[s->act_fifo_pos_write] = ch;
202	s->act_fifo_pos_write++;
203	if (s->act_fifo_pos_write < LPT_ECP_FIFO_DEPTH) {
204	/* FIFO has some data (clear both FIFO bits) */
205	s->reg_ecp_ecr &= ~(LPT_ECP_ECR_FIFO_EMPTY \| LPT_ECP_ECR_FIFO_FULL);
206	} else {
207	/* FIFO is full */
208	/* Clear FIFO empty bit */
209	s->reg_ecp_ecr &= ~LPT_ECP_ECR_FIFO_EMPTY;
210	/* Set FIFO full bit */
211	s->reg_ecp_ecr \|= LPT_ECP_ECR_FIFO_FULL;
212	s->act_fifo_pos_write = 0;
213	}
214	} else {
215	s->reg_ecp_base_plus_400h = ch;
216	}
217	break;
218	case 1:
219	s->reg_ecp_config_b = ch;
220	break;
221	case 2:
222	/* If we change the mode clear FIFO */
223	if ((ch & LPT_ECP_ECR_CHIPMODE_MASK) != (s->reg_ecp_ecr & LPT_ECP_ECR_CHIPMODE_MASK)) {
224	/* reset the fifo */
225	s->act_fifo_pos_write = 0;
226	s->act_fifo_pos_read = 0;
227	/* Set FIFO empty bit */
228	s->reg_ecp_ecr \|= LPT_ECP_ECR_FIFO_EMPTY;
229	/* Clear FIFO full bit */
230	s->reg_ecp_ecr &= ~LPT_ECP_ECR_FIFO_FULL;
231	}
232	/* Set new mode */
233	s->reg_ecp_ecr \|= LPT_ECP_ECR_CHIPMODE_SET_BITS(LPT_ECP_ECR_CHIPMODE_GET_BITS(ch));
234	break;
235	case 3:
236	break;
237	case 4:
238	break;
239	case 5:
240	break;
241	case 6:
242	break;
243	case 7:
244	break;
245	}
246	return VINF_SUCCESS;
247	}
248
249	static uint32_t parallel_ioport_read_ecp(void opaque, uint32_t addr, int pRC)
250	{
251	PARALLELPORT s = (PARALLELPORT )opaque;
252	uint32_t ret = ~0U;
253
254	*pRC = VINF_SUCCESS;
255
256	addr &= 7;
257	switch (addr) {
258	default:
259	case 0:
260	if (LPT_ECP_ECR_CHIPMODE_GET_BITS(s->reg_ecp_ecr) == LPT_ECP_ECR_CHIPMODE_FIFO_TEST) {
261	ret = s->ecp_fifo[s->act_fifo_pos_read];
262	s->act_fifo_pos_read++;
263	if (s->act_fifo_pos_read == LPT_ECP_FIFO_DEPTH)
264	s->act_fifo_pos_read = 0; /* end of FIFO, start at beginning */
265	if (s->act_fifo_pos_read == s->act_fifo_pos_write) {
266	/* FIFO is empty */
267	/* Set FIFO empty bit */
268	s->reg_ecp_ecr \|= LPT_ECP_ECR_FIFO_EMPTY;
269	/* Clear FIFO full bit */
270	s->reg_ecp_ecr &= ~LPT_ECP_ECR_FIFO_FULL;
271	} else {
272	/* FIFO has some data (clear all FIFO bits) */
273	s->reg_ecp_ecr &= ~(LPT_ECP_ECR_FIFO_EMPTY \| LPT_ECP_ECR_FIFO_FULL);
274	}
275	} else {
276	ret = s->reg_ecp_base_plus_400h;
277	}
278	break;
279	case 1:
280	ret = s->reg_ecp_config_b;
281	break;
282	case 2:
283	ret = s->reg_ecp_ecr;
284	break;
285	case 3:
286	break;
287	case 4:
288	break;
289	case 5:
290	break;
291	case 6:
292	break;
293	case 7:
294	break;
295	}
296	LogFlow(("parallel: read ecp addr=0x%02x val=0x%02x\n", addr, ret));
297	return ret;
298	}
299	#endif
300
301	#ifdef IN_RING3
302	/**
303	* @interface_method_impl{PDMIHOSTPARALLELPORT,pfnNotifyInterrupt}
304	*/
305	static DECLCALLBACK(int) parallelR3NotifyInterrupt(PPDMIHOSTPARALLELPORT pInterface)
306	{
307	PARALLELPORT *pThis = PDMIHOSTPARALLELPORT_2_PARALLELPORT(pInterface);
308
309	PDMCritSectEnter(pThis->pDevInsR3->pCritSectRoR3, VINF_SUCCESS);
310	parallelR3IrqSet(pThis);
311	PDMCritSectLeave(pThis->pDevInsR3->pCritSectRoR3);
312
313	return VINF_SUCCESS;
314	}
315	#endif /* IN_RING3 */
316
317
318	/**
319	* @callback_method_impl{FNIOMIOPORTOUT}
320	*/
321	PDMBOTHCBDECL(int) parallelIOPortWrite(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT uPort, uint32_t u32, unsigned cb)
322	{
323	PARALLELPORT *pThis = PDMINS_2_DATA(pDevIns, PPARALLELPORT);
324	int rc = VINF_SUCCESS;
325	RT_NOREF_PV(pvUser);
326
327	if (cb == 1)
328	{
329	uint8_t u8 = u32;
330
331	Log2(("%s: port %#06x val %#04x\n", __FUNCTION__, uPort, u32));
332
333	uPort &= 7;
334	switch (uPort)
335	{
336	case 0:
337	#ifndef IN_RING3
338	NOREF(u8);
339	rc = VINF_IOM_R3_IOPORT_WRITE;
340	#else
341	pThis->regData = u8;
342	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
343	{
344	LogFlowFunc(("Set data lines 0x%X\n", u8));
345	rc = pThis->pDrvHostParallelConnector->pfnWrite(pThis->pDrvHostParallelConnector, &u8, 1, PDM_PARALLEL_PORT_MODE_SPP);
346	AssertRC(rc);
347	}
348	#endif
349	break;
350	case 1:
351	break;
352	case 2:
353	/* Set the reserved bits to one */
354	u8 \|= (LPT_CONTROL_BIT6 \| LPT_CONTROL_BIT7);
355	if (u8 != pThis->regControl)
356	{
357	#ifndef IN_RING3
358	return VINF_IOM_R3_IOPORT_WRITE;
359	#else
360	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
361	{
362	/* Set data direction. */
363	if (u8 & LPT_CONTROL_ENABLE_BIDIRECT)
364	rc = pThis->pDrvHostParallelConnector->pfnSetPortDirection(pThis->pDrvHostParallelConnector, false /* fForward */);
365	else
366	rc = pThis->pDrvHostParallelConnector->pfnSetPortDirection(pThis->pDrvHostParallelConnector, true /* fForward */);
367	AssertRC(rc);
368
369	u8 &= ~LPT_CONTROL_ENABLE_BIDIRECT; /* Clear bit. */
370
371	rc = pThis->pDrvHostParallelConnector->pfnWriteControl(pThis->pDrvHostParallelConnector, u8);
372	AssertRC(rc);
373	}
374	else
375	u8 &= ~LPT_CONTROL_ENABLE_BIDIRECT; /* Clear bit. */
376
377	pThis->regControl = u8;
378	#endif
379	}
380	break;
381	case 3:
382	#ifndef IN_RING3
383	NOREF(u8);
384	rc = VINF_IOM_R3_IOPORT_WRITE;
385	#else
386	pThis->regEppAddr = u8;
387	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
388	{
389	LogFlowFunc(("Write EPP address 0x%X\n", u8));
390	rc = pThis->pDrvHostParallelConnector->pfnWrite(pThis->pDrvHostParallelConnector, &u8, 1, PDM_PARALLEL_PORT_MODE_EPP_ADDR);
391	AssertRC(rc);
392	}
393	#endif
394	break;
395	case 4:
396	#ifndef IN_RING3
397	NOREF(u8);
398	rc = VINF_IOM_R3_IOPORT_WRITE;
399	#else
400	pThis->regEppData = u8;
401	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
402	{
403	LogFlowFunc(("Write EPP data 0x%X\n", u8));
404	rc = pThis->pDrvHostParallelConnector->pfnWrite(pThis->pDrvHostParallelConnector, &u8, 1, PDM_PARALLEL_PORT_MODE_EPP_DATA);
405	AssertRC(rc);
406	}
407	#endif
408	break;
409	case 5:
410	break;
411	case 6:
412	break;
413	case 7:
414	default:
415	break;
416	}
417	}
418	else
419	AssertMsgFailed(("Port=%#x cb=%d u32=%#x\n", uPort, cb, u32));
420
421	return rc;
422	}
423
424
425	/**
426	* @callback_method_impl{FNIOMIOPORTIN}
427	*/
428	PDMBOTHCBDECL(int) parallelIOPortRead(PPDMDEVINS pDevIns, void pvUser, RTIOPORT uPort, uint32_t pu32, unsigned cb)
429	{
430	PARALLELPORT pThis = PDMINS_2_DATA(pDevIns, PARALLELPORT );
431	int rc = VINF_SUCCESS;
432	RT_NOREF_PV(pvUser);
433
434	if (cb == 1)
435	{
436	uPort &= 7;
437	switch (uPort)
438	{
439	case 0:
440	if (!(pThis->regControl & LPT_CONTROL_ENABLE_BIDIRECT))
441	*pu32 = pThis->regData;
442	else
443	{
444	#ifndef IN_RING3
445	rc = VINF_IOM_R3_IOPORT_READ;
446	#else
447	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
448	{
449	rc = pThis->pDrvHostParallelConnector->pfnRead(pThis->pDrvHostParallelConnector, &pThis->regData,
450	1, PDM_PARALLEL_PORT_MODE_SPP);
451	Log(("Read data lines 0x%X\n", pThis->regData));
452	AssertRC(rc);
453	}
454	*pu32 = pThis->regData;
455	#endif
456	}
457	break;
458	case 1:
459	#ifndef IN_RING3
460	rc = VINF_IOM_R3_IOPORT_READ;
461	#else
462	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
463	{
464	rc = pThis->pDrvHostParallelConnector->pfnReadStatus(pThis->pDrvHostParallelConnector, &pThis->regStatus);
465	AssertRC(rc);
466	}
467	*pu32 = pThis->regStatus;
468	parallelR3IrqClear(pThis);
469	#endif
470	break;
471	case 2:
472	#ifndef IN_RING3
473	rc = VINF_IOM_R3_IOPORT_READ;
474	#else
475	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
476	{
477	rc = pThis->pDrvHostParallelConnector->pfnReadControl(pThis->pDrvHostParallelConnector, &pThis->regControl);
478	AssertRC(rc);
479	pThis->regControl \|= LPT_CONTROL_BIT6 \| LPT_CONTROL_BIT7;
480	}
481
482	*pu32 = pThis->regControl;
483	#endif
484	break;
485	case 3:
486	#ifndef IN_RING3
487	rc = VINF_IOM_R3_IOPORT_READ;
488	#else
489	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
490	{
491	rc = pThis->pDrvHostParallelConnector->pfnRead(pThis->pDrvHostParallelConnector, &pThis->regEppAddr,
492	1, PDM_PARALLEL_PORT_MODE_EPP_ADDR);
493	Log(("Read EPP address 0x%X\n", pThis->regEppAddr));
494	AssertRC(rc);
495	}
496	*pu32 = pThis->regEppAddr;
497	#endif
498	break;
499	case 4:
500	#ifndef IN_RING3
501	rc = VINF_IOM_R3_IOPORT_READ;
502	#else
503	if (RT_LIKELY(pThis->pDrvHostParallelConnector))
504	{
505	rc = pThis->pDrvHostParallelConnector->pfnRead(pThis->pDrvHostParallelConnector, &pThis->regEppData,
506	1, PDM_PARALLEL_PORT_MODE_EPP_DATA);
507	Log(("Read EPP data 0x%X\n", pThis->regEppData));
508	AssertRC(rc);
509	}
510	*pu32 = pThis->regEppData;
511	#endif
512	break;
513	case 5:
514	break;
515	case 6:
516	break;
517	case 7:
518	break;
519	}
520	}
521	else
522	rc = VERR_IOM_IOPORT_UNUSED;
523
524	return rc;
525	}
526
527	#if 0
528	/**
529	* @callback_method_impl{FNIOMIOPORTOUT, ECP registers.}
530	*/
531	PDMBOTHCBDECL(int) parallelIOPortWriteECP(PPDMDEVINS pDevIns, void *pvUser, RTIOPORT Port, uint32_t u32, unsigned cb)
532	{
533	PARALLELPORT pThis = PDMINS_2_DATA(pDevIns, PARALLELPORT );
534	int rc = VINF_SUCCESS;
535
536	if (cb == 1)
537	{
538	Log2(("%s: ecp port %#06x val %#04x\n", __FUNCTION__, Port, u32));
539	rc = parallel_ioport_write_ecp (pThis, Port, u32);
540	}
541	else
542	AssertMsgFailed(("Port=%#x cb=%d u32=%#x\n", Port, cb, u32));
543
544	return rc;
545	}
546
547	/**
548	* @callback_method_impl{FNIOMIOPORTOUT, ECP registers.}
549	*/
550	PDMBOTHCBDECL(int) parallelIOPortReadECP(PPDMDEVINS pDevIns, void pvUser, RTIOPORT Port, uint32_t pu32, unsigned cb)
551	{
552	PARALLELPORT pThis = PDMINS_2_DATA(pDevIns, PARALLELPORT );
553	int rc = VINF_SUCCESS;
554
555	if (cb == 1)
556	{
557	*pu32 = parallel_ioport_read_ecp (pThis, Port, &rc);
558	Log2(("%s: ecp port %#06x val %#04x\n", __FUNCTION__, Port, *pu32));
559	}
560	else
561	rc = VERR_IOM_IOPORT_UNUSED;
562
563	return rc;
564	}
565	#endif
566
567	#ifdef IN_RING3
568
569	/**
570	* @callback_method_impl{FNSSMDEVLIVEEXEC}
571	*/
572	static DECLCALLBACK(int) parallelR3LiveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uPass)
573	{
574	RT_NOREF(uPass);
575	PARALLELPORT pThis = PDMINS_2_DATA(pDevIns, PARALLELPORT );
576
577	SSMR3PutS32(pSSM, pThis->iIrq);
578	SSMR3PutU32(pSSM, pThis->IOBase);
579	SSMR3PutU32(pSSM, UINT32_MAX); /* sanity/terminator */
580	return VINF_SSM_DONT_CALL_AGAIN;
581	}
582
583
584	/**
585	* @callback_method_impl{FNSSMDEVSAVEEXEC}
586	*/
587	static DECLCALLBACK(int) parallelR3SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM)
588	{
589	PARALLELPORT pThis = PDMINS_2_DATA(pDevIns, PARALLELPORT );
590
591	SSMR3PutU8(pSSM, pThis->regData);
592	SSMR3PutU8(pSSM, pThis->regStatus);
593	SSMR3PutU8(pSSM, pThis->regControl);
594
595	parallelR3LiveExec(pDevIns, pSSM, 0);
596	return VINF_SUCCESS;
597	}
598
599
600	/**
601	* @callback_method_impl{FNSSMDEVLOADEXEC}
602	*/
603	static DECLCALLBACK(int) parallelR3LoadExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
604	{
605	PARALLELPORT pThis = PDMINS_2_DATA(pDevIns, PARALLELPORT );
606
607	AssertMsgReturn(uVersion == PARALLEL_SAVED_STATE_VERSION, ("%d\n", uVersion), VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION);
608	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
609	if (uPass == SSM_PASS_FINAL)
610	{
611	SSMR3GetU8(pSSM, &pThis->regData);
612	SSMR3GetU8(pSSM, &pThis->regStatus);
613	SSMR3GetU8(pSSM, &pThis->regControl);
614	}
615
616	/* the config */
617	int32_t iIrq;
618	SSMR3GetS32(pSSM, &iIrq);
619	uint32_t uIoBase;
620	SSMR3GetU32(pSSM, &uIoBase);
621	uint32_t u32;
622	int rc = SSMR3GetU32(pSSM, &u32);
623	if (RT_FAILURE(rc))
624	return rc;
625	AssertMsgReturn(u32 == UINT32_MAX, ("%#x\n", u32), VERR_SSM_DATA_UNIT_FORMAT_CHANGED);
626
627	if (pThis->iIrq != iIrq)
628	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("IRQ changed: config=%#x state=%#x"), pThis->iIrq, iIrq);
629
630	if (pThis->IOBase != uIoBase)
631	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("IOBase changed: config=%#x state=%#x"), pThis->IOBase, uIoBase);
632
633	/* not necessary... but it doesn't harm. */
634	pThis->pDevInsR3 = pDevIns;
635	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
636	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
637	return VINF_SUCCESS;
638	}
639
640
641	/**
642	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
643	*/
644	static DECLCALLBACK(void ) parallelR3QueryInterface(PPDMIBASE pInterface, const char pszIID)
645	{
646	PARALLELPORT *pThis = PDMIBASE_2_PARALLELPORT(pInterface);
647	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pThis->IBase);
648	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTPARALLELPORT, &pThis->IHostParallelPort);
649	return NULL;
650	}
651
652
653	/**
654	* @copydoc FNPDMDEVRELOCATE
655	*/
656	static DECLCALLBACK(void) parallelR3Relocate(PPDMDEVINS pDevIns, RTGCINTPTR offDelta)
657	{
658	PARALLELPORT pThis = PDMINS_2_DATA(pDevIns, PARALLELPORT );
659	pThis->pDevInsRC += offDelta;
660	}
661
662
663	/**
664	* @interface_method_impl{PDMDEVREG,pfnConstruct}
665	*/
666	static DECLCALLBACK(int) parallelR3Construct(PPDMDEVINS pDevIns, int iInstance, PCFGMNODE pCfg)
667	{
668	PDMDEV_CHECK_VERSIONS_RETURN(pDevIns);
669	int rc;
670	PARALLELPORT pThis = PDMINS_2_DATA(pDevIns, PARALLELPORT);
671
672	Assert(iInstance < 4);
673
674	/*
675	* Init the data.
676	*/
677	pThis->pDevInsR3 = pDevIns;
678	pThis->pDevInsR0 = PDMDEVINS_2_R0PTR(pDevIns);
679	pThis->pDevInsRC = PDMDEVINS_2_RCPTR(pDevIns);
680
681	/* IBase */
682	pThis->IBase.pfnQueryInterface = parallelR3QueryInterface;
683
684	/* IHostParallelPort */
685	pThis->IHostParallelPort.pfnNotifyInterrupt = parallelR3NotifyInterrupt;
686
687	/* Init parallel state */
688	pThis->regData = 0;
689	#if 0 /* ECP implementation not complete. */
690	pThis->reg_ecp_ecr = LPT_ECP_ECR_CHIPMODE_COMPAT \| LPT_ECP_ECR_FIFO_EMPTY;
691	pThis->act_fifo_pos_read = 0;
692	pThis->act_fifo_pos_write = 0;
693	#endif
694
695	/*
696	* Validate and read the configuration.
697	*/
698	if (!CFGMR3AreValuesValid(pCfg, "IRQ\0" "IOBase\0" "GCEnabled\0" "R0Enabled\0"))
699	return PDMDEV_SET_ERROR(pDevIns, VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES,
700	N_("Configuration error: Unknown config key"));
701
702	rc = CFGMR3QueryBoolDef(pCfg, "GCEnabled", &pThis->fGCEnabled, false);
703	if (RT_FAILURE(rc))
704	return PDMDEV_SET_ERROR(pDevIns, rc,
705	N_("Configuration error: Failed to get the \"GCEnabled\" value"));
706
707	rc = CFGMR3QueryBoolDef(pCfg, "R0Enabled", &pThis->fR0Enabled, false);
708	if (RT_FAILURE(rc))
709	return PDMDEV_SET_ERROR(pDevIns, rc,
710	N_("Configuration error: Failed to get the \"R0Enabled\" value"));
711	rc = CFGMR3QueryS32Def(pCfg, "IRQ", &pThis->iIrq, 7);
712	if (RT_FAILURE(rc))
713	return PDMDEV_SET_ERROR(pDevIns, rc,
714	N_("Configuration error: Failed to get the \"IRQ\" value"));
715	rc = CFGMR3QueryU16Def(pCfg, "IOBase", &pThis->IOBase, 0x378);
716	if (RT_FAILURE(rc))
717	return PDMDEV_SET_ERROR(pDevIns, rc,
718	N_("Configuration error: Failed to get the \"IOBase\" value"));
719
720	int port_count = (pThis->IOBase == 0x3BC) ? 4 : 8;
721	/*
722	* Register the I/O ports and saved state.
723	*/
724	rc = PDMDevHlpIOPortRegister(pDevIns, pThis->IOBase, port_count, 0,
725	parallelIOPortWrite, parallelIOPortRead,
726	NULL, NULL, "Parallel");
727	if (RT_FAILURE(rc))
728	return rc;
729
730	#if 0
731	/* register ecp registers */
732	rc = PDMDevHlpIOPortRegister(pDevIns, io_base+0x400, 8, 0,
733	parallelIOPortWriteECP, parallelIOPortReadECP,
734	NULL, NULL, "PARALLEL ECP");
735	if (RT_FAILURE(rc))
736	return rc;
737	#endif
738
739	if (pThis->fGCEnabled)
740	{
741	rc = PDMDevHlpIOPortRegisterRC(pDevIns, pThis->IOBase, port_count, 0, "parallelIOPortWrite",
742	"parallelIOPortRead", NULL, NULL, "Parallel");
743	if (RT_FAILURE(rc))
744	return rc;
745
746	#if 0
747	rc = PDMDevHlpIOPortRegisterGC(pDevIns, io_base+0x400, port_count, 0, "parallelIOPortWriteECP",
748	"parallelIOPortReadECP", NULL, NULL, "Parallel Ecp");
749	if (RT_FAILURE(rc))
750	return rc;
751	#endif
752	}
753
754	if (pThis->fR0Enabled)
755	{
756	rc = PDMDevHlpIOPortRegisterR0(pDevIns, pThis->IOBase, port_count, 0, "parallelIOPortWrite",
757	"parallelIOPortRead", NULL, NULL, "Parallel");
758	if (RT_FAILURE(rc))
759	return rc;
760
761	#if 0
762	rc = PDMDevHlpIOPortRegisterR0(pDevIns, io_base+0x400, 8, 0, "parallelIOPortWriteECP",
763	"parallelIOPortReadECP", NULL, NULL, "Parallel Ecp");
764	if (RT_FAILURE(rc))
765	return rc;
766	#endif
767	}
768
769	rc = PDMDevHlpSSMRegister3(pDevIns, PARALLEL_SAVED_STATE_VERSION, sizeof(*pThis),
770	parallelR3LiveExec, parallelR3SaveExec, parallelR3LoadExec);
771	if (RT_FAILURE(rc))
772	return rc;
773
774
775	/*
776	* Attach the parallel port driver and get the interfaces.
777	* For now no run-time changes are supported.
778	*/
779	rc = PDMDevHlpDriverAttach(pDevIns, 0, &pThis->IBase, &pThis->pDrvBase, "Parallel Host");
780	if (RT_SUCCESS(rc))
781	{
782	pThis->pDrvHostParallelConnector = PDMIBASE_QUERY_INTERFACE(pThis->pDrvBase, PDMIHOSTPARALLELCONNECTOR);
783
784	/* Set compatibility mode */
785	//pThis->pDrvHostParallelConnector->pfnSetMode(pThis->pDrvHostParallelConnector, PDM_PARALLEL_PORT_MODE_COMPAT);
786	/* Get status of control register */
787	pThis->pDrvHostParallelConnector->pfnReadControl(pThis->pDrvHostParallelConnector, &pThis->regControl);
788
789	AssertMsgReturn(pThis->pDrvHostParallelConnector,
790	("Configuration error: instance %d has no host parallel interface!\n", iInstance),
791	VERR_PDM_MISSING_INTERFACE);
792	}
793	else if (rc == VERR_PDM_NO_ATTACHED_DRIVER)
794	{
795	pThis->pDrvBase = NULL;
796	pThis->pDrvHostParallelConnector = NULL;
797	LogRel(("Parallel%d: no unit\n", iInstance));
798	}
799	else
800	{
801	AssertMsgFailed(("Parallel%d: Failed to attach to host driver. rc=%Rrc\n", iInstance, rc));
802	return PDMDevHlpVMSetError(pDevIns, rc, RT_SRC_POS,
803	N_("Parallel device %d cannot attach to host driver"), iInstance);
804	}
805
806	return VINF_SUCCESS;
807	}
808
809	/**
810	* The device registration structure.
811	*/
812	const PDMDEVREG g_DeviceParallelPort =
813	{
814	/* u32Version */
815	PDM_DEVREG_VERSION,
816	/* szName */
817	"parallel",
818	/* szRCMod */
819	"VBoxDDRC.rc",
820	/* szR0Mod */
821	"VBoxDDR0.r0",
822	/* pszDescription */
823	"Parallel Communication Port",
824	/* fFlags */
825	PDM_DEVREG_FLAGS_DEFAULT_BITS \| PDM_DEVREG_FLAGS_RC \| PDM_DEVREG_FLAGS_R0,
826	/* fClass */
827	PDM_DEVREG_CLASS_PARALLEL,
828	/* cMaxInstances */
829	2,
830	/* cbInstance */
831	sizeof(PARALLELPORT),
832	/* pfnConstruct */
833	parallelR3Construct,
834	/* pfnDestruct */
835	NULL,
836	/* pfnRelocate */
837	parallelR3Relocate,
838	/* pfnMemSetup */
839	NULL,
840	/* pfnPowerOn */
841	NULL,
842	/* pfnReset */
843	NULL,
844	/* pfnSuspend */
845	NULL,
846	/* pfnResume */
847	NULL,
848	/* pfnAttach */
849	NULL,
850	/* pfnDetach */
851	NULL,
852	/* pfnQueryInterface. */
853	NULL,
854	/* pfnInitComplete */
855	NULL,
856	/* pfnPowerOff */
857	NULL,
858	/* pfnSoftReset */
859	NULL,
860	/* u32VersionEnd */
861	PDM_DEVREG_VERSION
862	};
863	#endif /* IN_RING3 */
864	#endif /* !VBOX_DEVICE_STRUCT_TESTCASE */
865

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source: vbox/trunk/src/VBox/Devices/Parallel/DevParallel.cpp@ 78403

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