serial.c@ 584

Last change on this file since 584 was 61, checked in by vboxsync, 18 years ago
Sync with qemu -- fixed sizeof(divider).
Property svn:eol-style set to `native`
File size: 20.1 KB

Line
1	#ifdef VBOX
2	/** @file
3	*
4	* VBox serial device:
5	* Serial communication port driver
6	*/
7
8	/*
9	* Copyright (C) 2006 InnoTek Systemberatung GmbH
10	*
11	* This file is part of VirtualBox Open Source Edition (OSE), as
12	* available from http://www.virtualbox.org. This file is free software;
13	* you can redistribute it and/or modify it under the terms of the GNU
14	* General Public License as published by the Free Software Foundation,
15	* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
16	* distribution. VirtualBox OSE is distributed in the hope that it will
17	* be useful, but WITHOUT ANY WARRANTY of any kind.
18	*
19	* If you received this file as part of a commercial VirtualBox
20	* distribution, then only the terms of your commercial VirtualBox
21	* license agreement apply instead of the previous paragraph.
22	*
23	* --------------------------------------------------------------------
24	*
25	* This code is based on:
26	*
27	* QEMU 16450 UART emulation
28	*
29	* Copyright (c) 2003-2004 Fabrice Bellard
30	*
31	* Permission is hereby granted, free of charge, to any person obtaining a copy
32	* of this software and associated documentation files (the "Software"), to deal
33	* in the Software without restriction, including without limitation the rights
34	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
35	* copies of the Software, and to permit persons to whom the Software is
36	* furnished to do so, subject to the following conditions:
37	*
38	* The above copyright notice and this permission notice shall be included in
39	* all copies or substantial portions of the Software.
40	*
41	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
42	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
43	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
44	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
45	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
46	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
47	* THE SOFTWARE.
48	*
49	*/
50
51
52	/*******************************************************************************
53	* Header Files *
54	*******************************************************************************/
55	#define LOG_GROUP LOG_GROUP_DEV_SERIAL
56	#include <VBox/pdm.h>
57	#include <VBox/err.h>
58
59	#include <VBox/log.h>
60	#include <iprt/assert.h>
61	#include <iprt/uuid.h>
62	#include <iprt/string.h>
63
64	#include "Builtins.h"
65	#include "../vl_vbox.h"
66
67	#endif /* VBOX */
68
69	#ifndef VBOX
70	#include "vl.h"
71	#endif
72
73	//#define DEBUG_SERIAL
74
75	#define UART_LCR_DLAB 0x80 /* Divisor latch access bit */
76
77	#define UART_IER_MSI 0x08 /* Enable Modem status interrupt */
78	#define UART_IER_RLSI 0x04 /* Enable receiver line status interrupt */
79	#define UART_IER_THRI 0x02 /* Enable Transmitter holding register int. */
80	#define UART_IER_RDI 0x01 /* Enable receiver data interrupt */
81
82	#define UART_IIR_NO_INT 0x01 /* No interrupts pending */
83	#define UART_IIR_ID 0x06 /* Mask for the interrupt ID */
84
85	#define UART_IIR_MSI 0x00 /* Modem status interrupt */
86	#define UART_IIR_THRI 0x02 /* Transmitter holding register empty */
87	#define UART_IIR_RDI 0x04 /* Receiver data interrupt */
88	#define UART_IIR_RLSI 0x06 /* Receiver line status interrupt */
89
90	/*
91	* These are the definitions for the Modem Control Register
92	*/
93	#define UART_MCR_LOOP 0x10 /* Enable loopback test mode */
94	#define UART_MCR_OUT2 0x08 /* Out2 complement */
95	#define UART_MCR_OUT1 0x04 /* Out1 complement */
96	#define UART_MCR_RTS 0x02 /* RTS complement */
97	#define UART_MCR_DTR 0x01 /* DTR complement */
98
99	/*
100	* These are the definitions for the Modem Status Register
101	*/
102	#define UART_MSR_DCD 0x80 /* Data Carrier Detect */
103	#define UART_MSR_RI 0x40 /* Ring Indicator */
104	#define UART_MSR_DSR 0x20 /* Data Set Ready */
105	#define UART_MSR_CTS 0x10 /* Clear to Send */
106	#define UART_MSR_DDCD 0x08 /* Delta DCD */
107	#define UART_MSR_TERI 0x04 /* Trailing edge ring indicator */
108	#define UART_MSR_DDSR 0x02 /* Delta DSR */
109	#define UART_MSR_DCTS 0x01 /* Delta CTS */
110	#define UART_MSR_ANY_DELTA 0x0F /* Any of the delta bits! */
111
112	#define UART_LSR_TEMT 0x40 /* Transmitter empty */
113	#define UART_LSR_THRE 0x20 /* Transmit-hold-register empty */
114	#define UART_LSR_BI 0x10 /* Break interrupt indicator */
115	#define UART_LSR_FE 0x08 /* Frame error indicator */
116	#define UART_LSR_PE 0x04 /* Parity error indicator */
117	#define UART_LSR_OE 0x02 /* Overrun error indicator */
118	#define UART_LSR_DR 0x01 /* Receiver data ready */
119
120	struct SerialState {
121	uint16_t divider;
122	uint8_t rbr; /* receive register */
123	uint8_t ier;
124	uint8_t iir; /* read only */
125	uint8_t lcr;
126	uint8_t mcr;
127	uint8_t lsr; /* read only */
128	uint8_t msr; /* read only */
129	uint8_t scr;
130	/* NOTE: this hidden state is necessary for tx irq generation as
131	it can be reset while reading iir */
132	int thr_ipending;
133	SetIRQFunc *set_irq;
134	void *irq_opaque;
135	int irq;
136	#ifdef VBOX
137	/* Be careful with pointers in the structure; load just gets the whole structure from the saved state */
138	PPDMDEVINS pDevIns;
139	#else
140	CharDriverState *chr;
141	#endif
142	int last_break_enable;
143	target_ulong base;
144	int it_shift;
145	};
146
147	static void serial_update_irq(SerialState *s)
148	{
149	if ((s->lsr & UART_LSR_DR) && (s->ier & UART_IER_RDI)) {
150	s->iir = UART_IIR_RDI;
151	} else if (s->thr_ipending && (s->ier & UART_IER_THRI)) {
152	s->iir = UART_IIR_THRI;
153	} else {
154	s->iir = UART_IIR_NO_INT;
155	}
156	if (s->iir != UART_IIR_NO_INT) {
157	#ifdef VBOX
158	s->pDevIns->pDevHlp->pfnISASetIrq (s->pDevIns, s->irq, 1);
159	#else
160	s->set_irq(s->irq_opaque, s->irq, 1);
161	#endif
162	} else {
163	#ifdef VBOX
164	s->pDevIns->pDevHlp->pfnISASetIrq (s->pDevIns, s->irq, 0);
165	#else
166	s->set_irq(s->irq_opaque, s->irq, 0);
167	#endif
168	}
169	}
170
171	static void serial_update_parameters(SerialState *s)
172	{
173	int speed, parity, data_bits, stop_bits;
174	QEMUSerialSetParams ssp;
175
176	if (s->lcr & 0x08) {
177	if (s->lcr & 0x10)
178	parity = 'E';
179	else
180	parity = 'O';
181	} else {
182	parity = 'N';
183	}
184	if (s->lcr & 0x04)
185	stop_bits = 2;
186	else
187	stop_bits = 1;
188	data_bits = (s->lcr & 0x03) + 5;
189	if (s->divider == 0)
190	return;
191	speed = 115200 / s->divider;
192	ssp.speed = speed;
193	ssp.parity = parity;
194	ssp.data_bits = data_bits;
195	ssp.stop_bits = stop_bits;
196	#ifndef VBOX
197	qemu_chr_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp);
198	#endif
199	#if 0
200	printf("speed=%d parity=%c data=%d stop=%d\n",
201	speed, parity, data_bits, stop_bits);
202	#endif
203	}
204
205	static void serial_ioport_write(void *opaque, uint32_t addr, uint32_t val)
206	{
207	SerialState *s = opaque;
208	unsigned char ch;
209
210	addr &= 7;
211	#ifdef DEBUG_SERIAL
212	printf("serial: write addr=0x%02x val=0x%02x\n", addr, val);
213	#endif
214	switch(addr) {
215	default:
216	case 0:
217	if (s->lcr & UART_LCR_DLAB) {
218	s->divider = (s->divider & 0xff00) \| val;
219	serial_update_parameters(s);
220	} else {
221	s->thr_ipending = 0;
222	s->lsr &= ~UART_LSR_THRE;
223	serial_update_irq(s);
224	ch = val;
225	#ifndef VBOX
226	qemu_chr_write(s->chr, &ch, 1);
227	#endif
228	s->thr_ipending = 1;
229	s->lsr \|= UART_LSR_THRE;
230	s->lsr \|= UART_LSR_TEMT;
231	serial_update_irq(s);
232	}
233	break;
234	case 1:
235	if (s->lcr & UART_LCR_DLAB) {
236	s->divider = (s->divider & 0x00ff) \| (val << 8);
237	serial_update_parameters(s);
238	} else {
239	s->ier = val & 0x0f;
240	if (s->lsr & UART_LSR_THRE) {
241	s->thr_ipending = 1;
242	}
243	serial_update_irq(s);
244	}
245	break;
246	case 2:
247	break;
248	case 3:
249	{
250	int break_enable;
251	s->lcr = val;
252	serial_update_parameters(s);
253	break_enable = (val >> 6) & 1;
254	if (break_enable != s->last_break_enable) {
255	s->last_break_enable = break_enable;
256	#ifndef VBOX
257	qemu_chr_ioctl(s->chr, CHR_IOCTL_SERIAL_SET_BREAK,
258	&break_enable);
259	#endif
260	}
261	}
262	break;
263	case 4:
264	s->mcr = val & 0x1f;
265	break;
266	case 5:
267	break;
268	case 6:
269	break;
270	case 7:
271	s->scr = val;
272	break;
273	}
274	}
275
276	static uint32_t serial_ioport_read(void *opaque, uint32_t addr)
277	{
278	SerialState *s = opaque;
279	uint32_t ret;
280
281	addr &= 7;
282	switch(addr) {
283	default:
284	case 0:
285	if (s->lcr & UART_LCR_DLAB) {
286	ret = s->divider & 0xff;
287	} else {
288	ret = s->rbr;
289	s->lsr &= ~(UART_LSR_DR \| UART_LSR_BI);
290	serial_update_irq(s);
291	}
292	break;
293	case 1:
294	if (s->lcr & UART_LCR_DLAB) {
295	ret = (s->divider >> 8) & 0xff;
296	} else {
297	ret = s->ier;
298	}
299	break;
300	case 2:
301	ret = s->iir;
302	/* reset THR pending bit */
303	if ((ret & 0x7) == UART_IIR_THRI)
304	s->thr_ipending = 0;
305	serial_update_irq(s);
306	break;
307	case 3:
308	ret = s->lcr;
309	break;
310	case 4:
311	ret = s->mcr;
312	break;
313	case 5:
314	ret = s->lsr;
315	break;
316	case 6:
317	if (s->mcr & UART_MCR_LOOP) {
318	/* in loopback, the modem output pins are connected to the
319	inputs */
320	ret = (s->mcr & 0x0c) << 4;
321	ret \|= (s->mcr & 0x02) << 3;
322	ret \|= (s->mcr & 0x01) << 5;
323	} else {
324	ret = s->msr;
325	}
326	break;
327	case 7:
328	ret = s->scr;
329	break;
330	}
331	#ifdef DEBUG_SERIAL
332	printf("serial: read addr=0x%02x val=0x%02x\n", addr, ret);
333	#endif
334	return ret;
335	}
336
337	#ifndef VBOX
338	static int serial_can_receive(SerialState *s)
339	{
340	return !(s->lsr & UART_LSR_DR);
341	}
342
343	static void serial_receive_byte(SerialState *s, int ch)
344	{
345	s->rbr = ch;
346	s->lsr \|= UART_LSR_DR;
347	serial_update_irq(s);
348	}
349
350	static void serial_receive_break(SerialState *s)
351	{
352	s->rbr = 0;
353	s->lsr \|= UART_LSR_BI \| UART_LSR_DR;
354	serial_update_irq(s);
355	}
356
357	static int serial_can_receive1(void *opaque)
358	{
359	SerialState *s = opaque;
360	return serial_can_receive(s);
361	}
362
363	static void serial_receive1(void opaque, const uint8_t buf, int size)
364	{
365	SerialState *s = opaque;
366	serial_receive_byte(s, buf[0]);
367	}
368
369	static void serial_event(void *opaque, int event)
370	{
371	SerialState *s = opaque;
372	if (event == CHR_EVENT_BREAK)
373	serial_receive_break(s);
374	}
375
376	static void serial_save(QEMUFile f, void opaque)
377	{
378	SerialState *s = opaque;
379
380	qemu_put_be16s(f,&s->divider);
381	qemu_put_8s(f,&s->rbr);
382	qemu_put_8s(f,&s->ier);
383	qemu_put_8s(f,&s->iir);
384	qemu_put_8s(f,&s->lcr);
385	qemu_put_8s(f,&s->mcr);
386	qemu_put_8s(f,&s->lsr);
387	qemu_put_8s(f,&s->msr);
388	qemu_put_8s(f,&s->scr);
389	}
390
391	static int serial_load(QEMUFile f, void opaque, int version_id)
392	{
393	SerialState *s = opaque;
394
395	if(version_id > 2)
396	return -EINVAL;
397
398	if (version_id >= 2)
399	qemu_get_be16s(f, &s->divider);
400	else
401	s->divider = qemu_get_byte(f);
402	qemu_get_8s(f,&s->rbr);
403	qemu_get_8s(f,&s->ier);
404	qemu_get_8s(f,&s->iir);
405	qemu_get_8s(f,&s->lcr);
406	qemu_get_8s(f,&s->mcr);
407	qemu_get_8s(f,&s->lsr);
408	qemu_get_8s(f,&s->msr);
409	qemu_get_8s(f,&s->scr);
410
411	return 0;
412	}
413
414	/* If fd is zero, it means that the serial device uses the console */
415	SerialState serial_init(SetIRQFunc set_irq, void *opaque,
416	int base, int irq, CharDriverState *chr)
417	{
418	SerialState *s;
419
420	s = qemu_mallocz(sizeof(SerialState));
421	if (!s)
422	return NULL;
423	s->set_irq = set_irq;
424	s->irq_opaque = opaque;
425	s->irq = irq;
426	s->lsr = UART_LSR_TEMT \| UART_LSR_THRE;
427	s->iir = UART_IIR_NO_INT;
428	s->msr = UART_MSR_DCD \| UART_MSR_DSR \| UART_MSR_CTS;
429
430	register_savevm("serial", base, 2, serial_save, serial_load, s);
431
432	register_ioport_write(base, 8, 1, serial_ioport_write, s);
433	register_ioport_read(base, 8, 1, serial_ioport_read, s);
434	s->chr = chr;
435	qemu_chr_add_read_handler(chr, serial_can_receive1, serial_receive1, s);
436	qemu_chr_add_event_handler(chr, serial_event);
437	return s;
438	}
439
440	/* Memory mapped interface */
441	static uint32_t serial_mm_readb (void *opaque, target_phys_addr_t addr)
442	{
443	SerialState *s = opaque;
444
445	return serial_ioport_read(s, (addr - s->base) >> s->it_shift) & 0xFF;
446	}
447
448	static void serial_mm_writeb (void *opaque,
449	target_phys_addr_t addr, uint32_t value)
450	{
451	SerialState *s = opaque;
452
453	serial_ioport_write(s, (addr - s->base) >> s->it_shift, value & 0xFF);
454	}
455
456	static uint32_t serial_mm_readw (void *opaque, target_phys_addr_t addr)
457	{
458	SerialState *s = opaque;
459
460	return serial_ioport_read(s, (addr - s->base) >> s->it_shift) & 0xFFFF;
461	}
462
463	static void serial_mm_writew (void *opaque,
464	target_phys_addr_t addr, uint32_t value)
465	{
466	SerialState *s = opaque;
467
468	serial_ioport_write(s, (addr - s->base) >> s->it_shift, value & 0xFFFF);
469	}
470
471	static uint32_t serial_mm_readl (void *opaque, target_phys_addr_t addr)
472	{
473	SerialState *s = opaque;
474
475	return serial_ioport_read(s, (addr - s->base) >> s->it_shift);
476	}
477
478	static void serial_mm_writel (void *opaque,
479	target_phys_addr_t addr, uint32_t value)
480	{
481	SerialState *s = opaque;
482
483	serial_ioport_write(s, (addr - s->base) >> s->it_shift, value);
484	}
485
486	static CPUReadMemoryFunc *serial_mm_read[] = {
487	&serial_mm_readb,
488	&serial_mm_readw,
489	&serial_mm_readl,
490	};
491
492	static CPUWriteMemoryFunc *serial_mm_write[] = {
493	&serial_mm_writeb,
494	&serial_mm_writew,
495	&serial_mm_writel,
496	};
497
498	SerialState serial_mm_init (SetIRQFunc set_irq, void *opaque,
499	target_ulong base, int it_shift,
500	int irq, CharDriverState *chr)
501	{
502	SerialState *s;
503	int s_io_memory;
504
505	s = qemu_mallocz(sizeof(SerialState));
506	if (!s)
507	return NULL;
508	s->set_irq = set_irq;
509	s->irq_opaque = opaque;
510	s->irq = irq;
511	s->lsr = UART_LSR_TEMT \| UART_LSR_THRE;
512	s->iir = UART_IIR_NO_INT;
513	s->msr = UART_MSR_DCD \| UART_MSR_DSR \| UART_MSR_CTS;
514	s->base = base;
515	s->it_shift = it_shift;
516
517	register_savevm("serial", base, 2, serial_save, serial_load, s);
518
519	s_io_memory = cpu_register_io_memory(0, serial_mm_read,
520	serial_mm_write, s);
521	cpu_register_physical_memory(base, 8 << it_shift, s_io_memory);
522	s->chr = chr;
523	qemu_chr_add_read_handler(chr, serial_can_receive1, serial_receive1, s);
524	qemu_chr_add_event_handler(chr, serial_event);
525	return s;
526	}
527
528	#else
529
530	static DECLCALLBACK(int) serial_io_write (PPDMDEVINS pDevIns,
531	void *pvUser,
532	RTIOPORT Port,
533	uint32_t u32,
534	unsigned cb)
535	{
536	if (cb == 1) {
537	serial_ioport_write (pvUser, Port, u32);
538	}
539	else {
540	AssertMsgFailed(("Port=%#x cb=%d u32=%#x\n", Port, cb, u32));
541	}
542	return VINF_SUCCESS;
543	}
544
545	static DECLCALLBACK(int) serial_io_read (PPDMDEVINS pDevIns,
546	void *pvUser,
547	RTIOPORT Port,
548	uint32_t *pu32,
549	unsigned cb)
550	{
551	if (cb == 1) {
552	*pu32 = serial_ioport_read (pvUser, Port);
553	return VINF_SUCCESS;
554	}
555	else {
556	return VERR_IOM_IOPORT_UNUSED;
557	}
558	}
559
560	static DECLCALLBACK(int) SaveExec(PPDMDEVINS pDevIns, PSSMHANDLE pSSMHandle)
561	{
562	SerialState s = PDMINS2DATA (pDevIns, SerialState );
563	SSMR3PutMem(pSSMHandle, s, sizeof(*s));
564	return SSMR3PutU32(pSSMHandle, ~0); /* sanity/terminator */
565	}
566
567	static DECLCALLBACK(int) LoadExec (PPDMDEVINS pDevIns,
568	PSSMHANDLE pSSMHandle,
569	uint32_t u32Version)
570	{
571	int rc;
572	uint32_t u32;
573	SerialState s = PDMINS2DATA (pDevIns, SerialState );
574
575	if (u32Version != 2) {
576	AssertMsgFailed(("u32Version=%d\n", u32Version));
577	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
578	}
579
580	rc = SSMR3GetMem(pSSMHandle, s, sizeof(*s));
581	if (VBOX_FAILURE(rc))
582	return rc;
583
584	rc = SSMR3GetU32(pSSMHandle, &u32);
585	if (VBOX_FAILURE(rc))
586	return rc;
587
588	if (u32 != ~0U) {
589	AssertMsgFailed(("u32=%#x expected ~0\n", u32));
590	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
591	}
592	/* Be careful with pointers in the structure; load just gets the whole structure from the saved state */
593	s->pDevIns = pDevIns;
594	return VINF_SUCCESS;
595	}
596
597
598	/**
599	* Construct a device instance for a VM.
600	*
601	* @returns VBox status.
602	* @param pDevIns The device instance data.
603	* If the registration structure is needed, pDevIns->pDevReg points to it.
604	* @param iInstance Instance number. Use this to figure out which registers and such to use.
605	* The device number is also found in pDevIns->iInstance, but since it's
606	* likely to be freqently used PDM passes it as parameter.
607	* @param pCfgHandle Configuration node handle for the device. Use this to obtain the configuration
608	* of the device instance. It's also found in pDevIns->pCfgHandle, but like
609	* iInstance it's expected to be used a bit in this function.
610	*/
611	static DECLCALLBACK(int) serialConstruct(PPDMDEVINS pDevIns,
612	int iInstance,
613	PCFGMNODE pCfgHandle)
614	{
615	int rc;
616	SerialState s = PDMINS2DATA(pDevIns, SerialState);
617	uint16_t io_base;
618	uint8_t irq_lvl;
619
620	Assert(iInstance < 2);
621
622	s->pDevIns = pDevIns;
623	/*
624	* Validate configuration.
625	*/
626	if (!CFGMR3AreValuesValid(pCfgHandle, "IRQ\0IOBase\0")) {
627	return VERR_PDM_DEVINS_UNKNOWN_CFG_VALUES;
628	}
629
630
631	/** @todo r=bird: Check for VERR_CFGM_VALUE_NOT_FOUND and provide sensible defaults.
632	* Also do AssertMsgFailed(("Configuration error:....)) in the failure cases of CFGMR3Query*()
633	* and CFGR3AreValuesValid() like we're doing in the other devices. */
634	rc = CFGMR3QueryU8 (pCfgHandle, "IRQ", &irq_lvl);
635	if (VBOX_FAILURE (rc)) {
636	return rc;
637	}
638
639	rc = CFGMR3QueryU16 (pCfgHandle, "IOBase", &io_base);
640	if (VBOX_FAILURE (rc)) {
641	return rc;
642	}
643
644	Log(("serialConstruct instance %d iobase=%04x irq=%d\n", iInstance, io_base, irq_lvl));
645
646	s->irq = irq_lvl;
647	s->lsr = UART_LSR_TEMT \| UART_LSR_THRE;
648	s->iir = UART_IIR_NO_INT;
649
650	rc = pDevIns->pDevHlp->pfnIOPortRegister (
651	pDevIns,
652	io_base,
653	8,
654	s,
655	serial_io_write,
656	serial_io_read,
657	NULL, NULL,
658	"SERIAL"
659	);
660	if (VBOX_FAILURE (rc)) {
661	return rc;
662	}
663
664	rc = pDevIns->pDevHlp->pfnSSMRegister (
665	pDevIns, /* pDevIns */
666	pDevIns->pDevReg->szDeviceName, /* pszName */
667	iInstance, /* u32Instance */
668	2 /* u32Version */,
669	sizeof (s), / cbGuess */
670	NULL, /* pfnSavePrep */
671	SaveExec, /* pfnSaveExec */
672	NULL, /* pfnSaveDone */
673	NULL, /* pfnLoadPrep */
674	LoadExec, /* pfnLoadExec */
675	NULL /* pfnLoadDone */
676	);
677	if (VBOX_FAILURE(rc))
678	return rc;
679
680	return VINF_SUCCESS;
681	}
682
683	/**
684	* The device registration structure.
685	*/
686	const PDMDEVREG g_DeviceSerialPort =
687	{
688	/* u32Version */
689	PDM_DEVREG_VERSION,
690	/* szDeviceName */
691	"serial",
692	/* szGCMod */
693	"",
694	/* szR0Mod */
695	"",
696	/* pszDescription */
697	"Serial Communication Port",
698	/* fFlags */
699	PDM_DEVREG_FLAGS_HOST_BITS_DEFAULT \| PDM_DEVREG_FLAGS_GUEST_BITS_DEFAULT,
700	/* fClass */
701	PDM_DEVREG_CLASS_SERIAL_PORT,
702	/* cMaxInstances */
703	1,
704	/* cbInstance */
705	sizeof(SerialState),
706	/* pfnConstruct */
707	serialConstruct,
708	/* pfnDestruct */
709	NULL,
710	/* pfnRelocate */
711	NULL,
712	/* pfnIOCtl */
713	NULL,
714	/* pfnPowerOn */
715	NULL,
716	/* pfnReset */
717	NULL,
718	/* pfnSuspend */
719	NULL,
720	/* pfnResume */
721	NULL,
722	/* pfnAttach */
723	NULL,
724	/* pfnDetach */
725	NULL,
726	/* pfnQueryInterface. */
727	NULL
728	};
729	#endif

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source: vbox/trunk/src/VBox/Devices/Serial/serial.c@ 584

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