VBoxSCSI.cpp@ 88956

Last change on this file since 88956 was 88532, checked in by vboxsync, 4 years ago
Devices/Storage/VBoxSCSI: Use correct size indicator, bugref:9920
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 18.8 KB

Line
1	/* $Id: VBoxSCSI.cpp 88532 2021-04-15 12:07:52Z vboxsync $ */
2	/** @file
3	* VBox storage devices - Simple SCSI interface for BIOS access.
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	//#define DEBUG
23	#define LOG_GROUP LOG_GROUP_DEV_BUSLOGIC /** @todo Create extra group. */
24
25	#if defined(IN_R0) \|\| defined(IN_RC)
26	# error This device has no R0 or RC components
27	#endif
28
29	#include <VBox/vmm/pdmdev.h>
30	#include <VBox/vmm/pgm.h>
31	#include <VBox/version.h>
32	#include <iprt/asm.h>
33	#include <iprt/mem.h>
34	#include <iprt/thread.h>
35	#include <iprt/string.h>
36
37	#include "VBoxSCSI.h"
38
39
40	/**
41	* Resets the state.
42	*/
43	static void vboxscsiReset(PVBOXSCSI pVBoxSCSI, bool fEverything)
44	{
45	if (fEverything)
46	{
47	pVBoxSCSI->regIdentify = 0;
48	pVBoxSCSI->fBusy = false;
49	}
50	pVBoxSCSI->cbCDB = 0;
51	RT_ZERO(pVBoxSCSI->abCDB);
52	pVBoxSCSI->iCDB = 0;
53	pVBoxSCSI->rcCompletion = 0;
54	pVBoxSCSI->uTargetDevice = 0;
55	pVBoxSCSI->cbBuf = 0;
56	pVBoxSCSI->cbBufLeft = 0;
57	pVBoxSCSI->iBuf = 0;
58	if (pVBoxSCSI->pbBuf)
59	RTMemFree(pVBoxSCSI->pbBuf);
60	pVBoxSCSI->pbBuf = NULL;
61	pVBoxSCSI->enmState = VBOXSCSISTATE_NO_COMMAND;
62	}
63
64	/**
65	* Initializes the state for the SCSI interface.
66	*
67	* @returns VBox status code.
68	* @param pVBoxSCSI Pointer to the unitialized SCSI state.
69	*/
70	int vboxscsiInitialize(PVBOXSCSI pVBoxSCSI)
71	{
72	int rc = RTCritSectInit(&pVBoxSCSI->CritSect);
73	if (RT_SUCCESS(rc))
74	{
75	pVBoxSCSI->pbBuf = NULL;
76	vboxscsiReset(pVBoxSCSI, true /fEverything/);
77	}
78
79	return rc;
80	}
81
82	/**
83	* Frees all allocated resources.
84	*
85	* @returns nothing.
86	* @param pVBoxSCSI Pointer to the SCSI state,
87	*/
88	void vboxscsiDestroy(PVBOXSCSI pVBoxSCSI)
89	{
90	if (RTCritSectIsInitialized(&pVBoxSCSI->CritSect))
91	RTCritSectDelete(&pVBoxSCSI->CritSect);
92	}
93
94	/**
95	* Performs a hardware reset.
96	*
97	* @returns nothing.
98	* @param pVBoxSCSI Pointer to the SCSI state,
99	*/
100	void vboxscsiHwReset(PVBOXSCSI pVBoxSCSI)
101	{
102	vboxscsiReset(pVBoxSCSI, true /fEverything/);
103	}
104
105	/**
106	* Reads a register value.
107	*
108	* @retval VINF_SUCCESS
109	* @param pVBoxSCSI Pointer to the SCSI state.
110	* @param iRegister Index of the register to read.
111	* @param pu32Value Where to store the content of the register.
112	*/
113	int vboxscsiReadRegister(PVBOXSCSI pVBoxSCSI, uint8_t iRegister, uint32_t *pu32Value)
114	{
115	uint8_t uVal = 0;
116
117	RTCritSectEnter(&pVBoxSCSI->CritSect);
118	switch (iRegister)
119	{
120	case 0:
121	{
122	if (ASMAtomicReadBool(&pVBoxSCSI->fBusy) == true)
123	{
124	uVal \|= VBOX_SCSI_BUSY;
125	/* There is an I/O operation in progress.
126	* Yield the execution thread to let the I/O thread make progress.
127	*/
128	RTThreadYield();
129	}
130	if (pVBoxSCSI->rcCompletion)
131	uVal \|= VBOX_SCSI_ERROR;
132	break;
133	}
134	case 1:
135	{
136	/* If we're not in the 'command ready' state, there may not even be a buffer yet. */
137	if ( pVBoxSCSI->enmState == VBOXSCSISTATE_COMMAND_READY
138	&& pVBoxSCSI->cbBufLeft > 0)
139	{
140	AssertMsg(pVBoxSCSI->pbBuf, ("pBuf is NULL\n"));
141	Assert(!pVBoxSCSI->fBusy);
142	uVal = pVBoxSCSI->pbBuf[pVBoxSCSI->iBuf];
143	pVBoxSCSI->iBuf++;
144	pVBoxSCSI->cbBufLeft--;
145
146	/* When the guest reads the last byte from the data in buffer, clear
147	everything and reset command buffer. */
148	if (pVBoxSCSI->cbBufLeft == 0)
149	vboxscsiReset(pVBoxSCSI, false /fEverything/);
150	}
151	break;
152	}
153	case 2:
154	{
155	uVal = pVBoxSCSI->regIdentify;
156	break;
157	}
158	case 3:
159	{
160	uVal = pVBoxSCSI->rcCompletion;
161	break;
162	}
163	default:
164	AssertMsgFailed(("Invalid register to read from %u\n", iRegister));
165	}
166
167	*pu32Value = uVal;
168	RTCritSectLeave(&pVBoxSCSI->CritSect);
169
170	return VINF_SUCCESS;
171	}
172
173	/**
174	* Writes to a register.
175	*
176	* @retval VINF_SUCCESS on success.
177	* @retval VERR_MORE_DATA if a command is ready to be sent to the SCSI driver.
178	*
179	* @param pVBoxSCSI Pointer to the SCSI state.
180	* @param iRegister Index of the register to write to.
181	* @param uVal Value to write.
182	*/
183	int vboxscsiWriteRegister(PVBOXSCSI pVBoxSCSI, uint8_t iRegister, uint8_t uVal)
184	{
185	int rc = VINF_SUCCESS;
186
187	RTCritSectEnter(&pVBoxSCSI->CritSect);
188	switch (iRegister)
189	{
190	case 0:
191	{
192	if (pVBoxSCSI->enmState == VBOXSCSISTATE_NO_COMMAND)
193	{
194	pVBoxSCSI->enmState = VBOXSCSISTATE_READ_TXDIR;
195	pVBoxSCSI->uTargetDevice = uVal;
196	}
197	else if (pVBoxSCSI->enmState == VBOXSCSISTATE_READ_TXDIR)
198	{
199	if (uVal != VBOXSCSI_TXDIR_FROM_DEVICE && uVal != VBOXSCSI_TXDIR_TO_DEVICE)
200	vboxscsiReset(pVBoxSCSI, true /fEverything/);
201	else
202	{
203	pVBoxSCSI->enmState = VBOXSCSISTATE_READ_CDB_SIZE_BUFHI;
204	pVBoxSCSI->uTxDir = uVal;
205	}
206	}
207	else if (pVBoxSCSI->enmState == VBOXSCSISTATE_READ_CDB_SIZE_BUFHI)
208	{
209	uint8_t cbCDB = uVal & 0x0F;
210
211	if (cbCDB == 0)
212	cbCDB = 16;
213	if (cbCDB > VBOXSCSI_CDB_SIZE_MAX)
214	vboxscsiReset(pVBoxSCSI, true /fEverything/);
215	else
216	{
217	pVBoxSCSI->enmState = VBOXSCSISTATE_READ_BUFFER_SIZE_LSB;
218	pVBoxSCSI->cbCDB = cbCDB;
219	pVBoxSCSI->cbBuf = (uVal & 0xF0) << 12; /* Bits 16-19 of buffer size. */
220	}
221	}
222	else if (pVBoxSCSI->enmState == VBOXSCSISTATE_READ_BUFFER_SIZE_LSB)
223	{
224	pVBoxSCSI->enmState = VBOXSCSISTATE_READ_BUFFER_SIZE_MID;
225	pVBoxSCSI->cbBuf \|= uVal; /* Bits 0-7 of buffer size. */
226	}
227	else if (pVBoxSCSI->enmState == VBOXSCSISTATE_READ_BUFFER_SIZE_MID)
228	{
229	pVBoxSCSI->enmState = VBOXSCSISTATE_READ_COMMAND;
230	pVBoxSCSI->cbBuf \|= (((uint16_t)uVal) << 8); /* Bits 8-15 of buffer size. */
231	}
232	else if (pVBoxSCSI->enmState == VBOXSCSISTATE_READ_COMMAND)
233	{
234	pVBoxSCSI->abCDB[pVBoxSCSI->iCDB] = uVal;
235	pVBoxSCSI->iCDB++;
236
237	/* Check if we have all necessary command data. */
238	if (pVBoxSCSI->iCDB == pVBoxSCSI->cbCDB)
239	{
240	Log(("%s: Command ready for processing\n", __FUNCTION__));
241	pVBoxSCSI->enmState = VBOXSCSISTATE_COMMAND_READY;
242	pVBoxSCSI->cbBufLeft = pVBoxSCSI->cbBuf;
243	if (pVBoxSCSI->uTxDir == VBOXSCSI_TXDIR_TO_DEVICE)
244	{
245	/* This is a write allocate buffer. */
246	pVBoxSCSI->pbBuf = (uint8_t *)RTMemAllocZ(pVBoxSCSI->cbBuf);
247	if (!pVBoxSCSI->pbBuf)
248	return VERR_NO_MEMORY;
249	}
250	else
251	{
252	/* This is a read from the device. */
253	ASMAtomicXchgBool(&pVBoxSCSI->fBusy, true);
254	rc = VERR_MORE_DATA; /** @todo Better return value to indicate ready command? */
255	}
256	}
257	}
258	else
259	AssertMsgFailed(("Invalid state %d\n", pVBoxSCSI->enmState));
260	break;
261	}
262
263	case 1:
264	{
265	if ( pVBoxSCSI->enmState != VBOXSCSISTATE_COMMAND_READY
266	\|\| pVBoxSCSI->uTxDir != VBOXSCSI_TXDIR_TO_DEVICE)
267	{
268	/* Reset the state */
269	vboxscsiReset(pVBoxSCSI, true /fEverything/);
270	}
271	else if (pVBoxSCSI->cbBufLeft > 0)
272	{
273	pVBoxSCSI->pbBuf[pVBoxSCSI->iBuf++] = uVal;
274	pVBoxSCSI->cbBufLeft--;
275	if (pVBoxSCSI->cbBufLeft == 0)
276	{
277	rc = VERR_MORE_DATA;
278	ASMAtomicXchgBool(&pVBoxSCSI->fBusy, true);
279	}
280	}
281	/* else: Ignore extra data, request pending or something. */
282	break;
283	}
284
285	case 2:
286	{
287	pVBoxSCSI->regIdentify = uVal;
288	break;
289	}
290
291	case 3:
292	{
293	/* Reset */
294	vboxscsiReset(pVBoxSCSI, true /fEverything/);
295	break;
296	}
297
298	default:
299	AssertMsgFailed(("Invalid register to write to %u\n", iRegister));
300	}
301
302	RTCritSectLeave(&pVBoxSCSI->CritSect);
303	return rc;
304	}
305
306	/**
307	* Sets up a SCSI request which the owning SCSI device can process.
308	*
309	* @returns VBox status code.
310	* @param pVBoxSCSI Pointer to the SCSI state.
311	* @param puLun Where to store the LUN on success.
312	* @param ppbCdb Where to store the pointer to the CDB on success.
313	* @param pcbCdb Where to store the size of the CDB on success.
314	* @param pcbBuf Where to store th size of the data buffer on success.
315	* @param puTargetDevice Where to store the target device ID.
316	*/
317	int vboxscsiSetupRequest(PVBOXSCSI pVBoxSCSI, uint32_t puLun, uint8_t *ppbCdb,
318	size_t pcbCdb, size_t pcbBuf, uint32_t *puTargetDevice)
319	{
320	int rc = VINF_SUCCESS;
321
322	LogFlowFunc(("pVBoxSCSI=%#p puTargetDevice=%#p\n", pVBoxSCSI, puTargetDevice));
323
324	RTCritSectEnter(&pVBoxSCSI->CritSect);
325	AssertMsg(pVBoxSCSI->enmState == VBOXSCSISTATE_COMMAND_READY, ("Invalid state %u\n", pVBoxSCSI->enmState));
326
327	/* Clear any errors from a previous request. */
328	pVBoxSCSI->rcCompletion = 0;
329
330	if (pVBoxSCSI->uTxDir == VBOXSCSI_TXDIR_FROM_DEVICE)
331	{
332	if (pVBoxSCSI->pbBuf)
333	RTMemFree(pVBoxSCSI->pbBuf);
334
335	pVBoxSCSI->pbBuf = (uint8_t *)RTMemAllocZ(pVBoxSCSI->cbBuf);
336	if (!pVBoxSCSI->pbBuf)
337	return VERR_NO_MEMORY;
338	}
339
340	*puLun = 0;
341	*ppbCdb = &pVBoxSCSI->abCDB[0];
342	*pcbCdb = pVBoxSCSI->cbCDB;
343	*pcbBuf = pVBoxSCSI->cbBuf;
344	*puTargetDevice = pVBoxSCSI->uTargetDevice;
345	RTCritSectLeave(&pVBoxSCSI->CritSect);
346
347	return rc;
348	}
349
350	/**
351	* Notifies the device that a request finished and the incoming data
352	* is ready at the incoming data port.
353	*/
354	int vboxscsiRequestFinished(PVBOXSCSI pVBoxSCSI, int rcCompletion)
355	{
356	LogFlowFunc(("pVBoxSCSI=%#p\n", pVBoxSCSI));
357
358	RTCritSectEnter(&pVBoxSCSI->CritSect);
359	if (pVBoxSCSI->uTxDir == VBOXSCSI_TXDIR_TO_DEVICE)
360	vboxscsiReset(pVBoxSCSI, false /fEverything/);
361
362	pVBoxSCSI->rcCompletion = rcCompletion;
363
364	ASMAtomicXchgBool(&pVBoxSCSI->fBusy, false);
365	RTCritSectLeave(&pVBoxSCSI->CritSect);
366
367	return VINF_SUCCESS;
368	}
369
370	size_t vboxscsiCopyToBuf(PVBOXSCSI pVBoxSCSI, PRTSGBUF pSgBuf, size_t cbSkip, size_t cbCopy)
371	{
372	AssertPtrReturn(pVBoxSCSI->pbBuf, 0);
373	AssertReturn(cbSkip + cbCopy <= pVBoxSCSI->cbBuf, 0);
374
375	RTCritSectEnter(&pVBoxSCSI->CritSect);
376	void *pvBuf = pVBoxSCSI->pbBuf + cbSkip;
377	size_t cbCopied = RTSgBufCopyToBuf(pSgBuf, pvBuf, cbCopy);
378	RTCritSectLeave(&pVBoxSCSI->CritSect);
379
380	return cbCopied;
381	}
382
383	size_t vboxscsiCopyFromBuf(PVBOXSCSI pVBoxSCSI, PRTSGBUF pSgBuf, size_t cbSkip, size_t cbCopy)
384	{
385	AssertPtrReturn(pVBoxSCSI->pbBuf, 0);
386	AssertReturn(cbSkip + cbCopy <= pVBoxSCSI->cbBuf, 0);
387
388	RTCritSectEnter(&pVBoxSCSI->CritSect);
389	void *pvBuf = pVBoxSCSI->pbBuf + cbSkip;
390	size_t cbCopied = RTSgBufCopyFromBuf(pSgBuf, pvBuf, cbCopy);
391	RTCritSectLeave(&pVBoxSCSI->CritSect);
392
393	return cbCopied;
394	}
395
396	/**
397	* @retval VINF_SUCCESS
398	*/
399	int vboxscsiReadString(PPDMDEVINS pDevIns, PVBOXSCSI pVBoxSCSI, uint8_t iRegister,
400	uint8_t pbDst, uint32_t pcTransfers, unsigned cb)
401	{
402	RT_NOREF(pDevIns);
403	LogFlowFunc(("pDevIns=%#p pVBoxSCSI=%#p iRegister=%d cTransfers=%u cb=%u\n",
404	pDevIns, pVBoxSCSI, iRegister, *pcTransfers, cb));
405
406	/*
407	* Check preconditions, fall back to non-string I/O handler.
408	*/
409	Assert(*pcTransfers > 0);
410
411	/* Read string only valid for data in register. */
412	AssertMsgReturn(iRegister == 1, ("Hey! Only register 1 can be read from with string!\n"), VINF_SUCCESS);
413
414	/* Accesses without a valid buffer will be ignored. */
415	AssertReturn(pVBoxSCSI->pbBuf, VINF_SUCCESS);
416
417	/* Check state. */
418	AssertReturn(pVBoxSCSI->enmState == VBOXSCSISTATE_COMMAND_READY, VINF_SUCCESS);
419	Assert(!pVBoxSCSI->fBusy);
420
421	RTCritSectEnter(&pVBoxSCSI->CritSect);
422	/*
423	* Also ignore attempts to read more data than is available.
424	*/
425	uint32_t cbTransfer = pcTransfers cb;
426	if (pVBoxSCSI->cbBufLeft > 0)
427	{
428	Assert(cbTransfer <= pVBoxSCSI->cbBufLeft);
429	if (cbTransfer > pVBoxSCSI->cbBufLeft)
430	{
431	memset(pbDst + pVBoxSCSI->cbBufLeft, 0xff, cbTransfer - pVBoxSCSI->cbBufLeft);
432	cbTransfer = pVBoxSCSI->cbBufLeft; /* Ignore excess data (not supposed to happen). */
433	}
434
435	/* Copy the data and adance the buffer position. */
436	memcpy(pbDst, pVBoxSCSI->pbBuf + pVBoxSCSI->iBuf, cbTransfer);
437
438	/* Advance current buffer position. */
439	pVBoxSCSI->iBuf += cbTransfer;
440	pVBoxSCSI->cbBufLeft -= cbTransfer;
441
442	/* When the guest reads the last byte from the data in buffer, clear
443	everything and reset command buffer. */
444	if (pVBoxSCSI->cbBufLeft == 0)
445	vboxscsiReset(pVBoxSCSI, false /fEverything/);
446	}
447	else
448	{
449	AssertFailed();
450	memset(pbDst, 0, cbTransfer);
451	}
452	*pcTransfers = 0;
453	RTCritSectLeave(&pVBoxSCSI->CritSect);
454
455	return VINF_SUCCESS;
456	}
457
458	/**
459	* @retval VINF_SUCCESS
460	* @retval VERR_MORE_DATA
461	*/
462	int vboxscsiWriteString(PPDMDEVINS pDevIns, PVBOXSCSI pVBoxSCSI, uint8_t iRegister,
463	uint8_t const pbSrc, uint32_t pcTransfers, unsigned cb)
464	{
465	RT_NOREF(pDevIns);
466
467	/*
468	* Check preconditions, fall back to non-string I/O handler.
469	*/
470	Assert(*pcTransfers > 0);
471	/* Write string only valid for data in/out register. */
472	AssertMsgReturn(iRegister == 1, ("Hey! Only register 1 can be written to with string!\n"), VINF_SUCCESS);
473
474	/* Accesses without a valid buffer will be ignored. */
475	AssertReturn(pVBoxSCSI->pbBuf, VINF_SUCCESS);
476
477	/* State machine assumptions. */
478	AssertReturn(pVBoxSCSI->enmState == VBOXSCSISTATE_COMMAND_READY, VINF_SUCCESS);
479	AssertReturn(pVBoxSCSI->uTxDir == VBOXSCSI_TXDIR_TO_DEVICE, VINF_SUCCESS);
480
481	RTCritSectEnter(&pVBoxSCSI->CritSect);
482	/*
483	* Ignore excess data (not supposed to happen).
484	*/
485	int rc = VINF_SUCCESS;
486	if (pVBoxSCSI->cbBufLeft > 0)
487	{
488	uint32_t cbTransfer = RT_MIN(pcTransfers cb, pVBoxSCSI->cbBufLeft);
489
490	/* Copy the data and adance the buffer position. */
491	memcpy(pVBoxSCSI->pbBuf + pVBoxSCSI->iBuf, pbSrc, cbTransfer);
492	pVBoxSCSI->iBuf += cbTransfer;
493	pVBoxSCSI->cbBufLeft -= cbTransfer;
494
495	/* If we've reached the end, tell the caller to submit the command. */
496	if (pVBoxSCSI->cbBufLeft == 0)
497	{
498	ASMAtomicXchgBool(&pVBoxSCSI->fBusy, true);
499	rc = VERR_MORE_DATA;
500	}
501	}
502	else
503	AssertFailed();
504	*pcTransfers = 0;
505	RTCritSectLeave(&pVBoxSCSI->CritSect);
506
507	return rc;
508	}
509
510	void vboxscsiSetRequestRedo(PVBOXSCSI pVBoxSCSI)
511	{
512	AssertMsg(pVBoxSCSI->fBusy, ("No request to redo\n"));
513
514	if (pVBoxSCSI->uTxDir == VBOXSCSI_TXDIR_FROM_DEVICE)
515	{
516	AssertPtr(pVBoxSCSI->pbBuf);
517	}
518	}
519
520	DECLHIDDEN(int) vboxscsiR3LoadExec(PCPDMDEVHLPR3 pHlp, PVBOXSCSI pVBoxSCSI, PSSMHANDLE pSSM)
521	{
522	SSMR3GetU8 (pSSM, &pVBoxSCSI->regIdentify);
523	SSMR3GetU8 (pSSM, &pVBoxSCSI->uTargetDevice);
524	SSMR3GetU8 (pSSM, &pVBoxSCSI->uTxDir);
525	SSMR3GetU8 (pSSM, &pVBoxSCSI->cbCDB);
526
527	/*
528	* The CDB buffer was increased with r104155 in trunk (backported to 5.0
529	* in r104311) without bumping the SSM state versions which leaves us
530	* with broken saved state restoring for older VirtualBox releases
531	* (up to 5.0.10).
532	*/
533	if ( ( SSMR3HandleRevision(pSSM) < 104311
534	&& SSMR3HandleVersion(pSSM) < VBOX_FULL_VERSION_MAKE(5, 0, 12))
535	\|\| ( SSMR3HandleRevision(pSSM) < 104155
536	&& SSMR3HandleVersion(pSSM) >= VBOX_FULL_VERSION_MAKE(5, 0, 51)))
537	{
538	memset(&pVBoxSCSI->abCDB[0], 0, sizeof(pVBoxSCSI->abCDB));
539	SSMR3GetMem (pSSM, &pVBoxSCSI->abCDB[0], 12);
540	}
541	else
542	SSMR3GetMem (pSSM, &pVBoxSCSI->abCDB[0], sizeof(pVBoxSCSI->abCDB));
543
544	SSMR3GetU8 (pSSM, &pVBoxSCSI->iCDB);
545	SSMR3GetU32 (pSSM, &pVBoxSCSI->cbBufLeft);
546	SSMR3GetU32 (pSSM, &pVBoxSCSI->iBuf);
547	SSMR3GetBoolV(pSSM, &pVBoxSCSI->fBusy);
548	PDMDEVHLP_SSM_GET_ENUM8_RET(pHlp, pSSM, pVBoxSCSI->enmState, VBOXSCSISTATE);
549
550	/*
551	* Old saved states only save the size of the buffer left to read/write.
552	* To avoid changing the saved state version we can just calculate the original
553	* buffer size from the offset and remaining size.
554	*/
555	pVBoxSCSI->cbBuf = pVBoxSCSI->cbBufLeft + pVBoxSCSI->iBuf;
556
557	if (pVBoxSCSI->cbBuf)
558	{
559	pVBoxSCSI->pbBuf = (uint8_t *)RTMemAllocZ(pVBoxSCSI->cbBuf);
560	if (!pVBoxSCSI->pbBuf)
561	return VERR_NO_MEMORY;
562
563	SSMR3GetMem(pSSM, pVBoxSCSI->pbBuf, pVBoxSCSI->cbBuf);
564	}
565
566	return VINF_SUCCESS;
567	}
568
569	DECLHIDDEN(int) vboxscsiR3SaveExec(PCPDMDEVHLPR3 pHlp, PVBOXSCSI pVBoxSCSI, PSSMHANDLE pSSM)
570	{
571	RT_NOREF(pHlp);
572	SSMR3PutU8 (pSSM, pVBoxSCSI->regIdentify);
573	SSMR3PutU8 (pSSM, pVBoxSCSI->uTargetDevice);
574	SSMR3PutU8 (pSSM, pVBoxSCSI->uTxDir);
575	SSMR3PutU8 (pSSM, pVBoxSCSI->cbCDB);
576	SSMR3PutMem (pSSM, pVBoxSCSI->abCDB, sizeof(pVBoxSCSI->abCDB));
577	SSMR3PutU8 (pSSM, pVBoxSCSI->iCDB);
578	SSMR3PutU32 (pSSM, pVBoxSCSI->cbBufLeft);
579	SSMR3PutU32 (pSSM, pVBoxSCSI->iBuf);
580	SSMR3PutBool (pSSM, pVBoxSCSI->fBusy);
581	SSMR3PutU8 (pSSM, pVBoxSCSI->enmState);
582
583	if (pVBoxSCSI->cbBuf)
584	SSMR3PutMem(pSSM, pVBoxSCSI->pbBuf, pVBoxSCSI->cbBuf);
585
586	return VINF_SUCCESS;
587	}

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source: vbox/trunk/src/VBox/Devices/Storage/VBoxSCSI.cpp@ 88956

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