DrvHostBase-freebsd.cpp@ 91942

Last change on this file since 91942 was 82968, checked in by vboxsync, 5 years ago
Copyright year updates by scm.
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1	/* $Id: DrvHostBase-freebsd.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* DrvHostBase - Host base drive access driver, FreeBSD specifics.
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 LOG_GROUP LOG_GROUP_DRV_HOST_BASE
23	#include <sys/cdefs.h>
24	#include <sys/param.h>
25	#include <errno.h>
26	#include <stdio.h>
27	#include <cam/cam.h>
28	#include <cam/cam_ccb.h>
29	#include <cam/scsi/scsi_message.h>
30	#include <cam/scsi/scsi_pass.h>
31	#include <VBox/err.h>
32
33	#include <VBox/scsi.h>
34	#include <iprt/file.h>
35	#include <iprt/log.h>
36	#include <iprt/string.h>
37
38
39	/*********************************************************************************************************************************
40	* Structures and Typedefs *
41	*********************************************************************************************************************************/
42	/**
43	* Host backend specific data.
44	*/
45	typedef struct DRVHOSTBASEOS
46	{
47	/** The filehandle of the device. */
48	RTFILE hFileDevice;
49	/** The block size. Set when querying the media size. */
50	uint32_t cbBlock;
51	/** SCSI bus number. */
52	path_id_t ScsiBus;
53	/** target ID of the passthrough device. */
54	target_id_t ScsiTargetID;
55	/** LUN of the passthrough device. */
56	lun_id_t ScsiLunID;
57	} DRVHOSTBASEOS;
58	/** Pointer to the host backend specific data. */
59	typedef DRVHOSTBASEOS *PDRVHOSBASEOS;
60	AssertCompile(sizeof(DRVHOSTBASEOS) <= 64);
61
62	#define DRVHOSTBASE_OS_INT_DECLARED
63	#include "DrvHostBase.h"
64
65
66	/*********************************************************************************************************************************
67	* Defined Constants And Macros *
68	*********************************************************************************************************************************/
69	/** Maximum buffer size supported by the CAM subsystem. */
70	#define FBSD_SCSI_MAX_BUFFER_SIZE (64 * _1K)
71
72
73
74	DECLHIDDEN(int) drvHostBaseScsiCmdOs(PDRVHOSTBASE pThis, const uint8_t *pbCmd, size_t cbCmd, PDMMEDIATXDIR enmTxDir,
75	void pvBuf, uint32_t pcbBuf, uint8_t *pbSense, size_t cbSense, uint32_t cTimeoutMillies)
76	{
77	/*
78	* Minimal input validation.
79	*/
80	Assert(enmTxDir == PDMMEDIATXDIR_NONE \|\| enmTxDir == PDMMEDIATXDIR_FROM_DEVICE \|\| enmTxDir == PDMMEDIATXDIR_TO_DEVICE);
81	Assert(!pvBuf \|\| pcbBuf);
82	Assert(pvBuf \|\| enmTxDir == PDMMEDIATXDIR_NONE);
83	Assert(pbSense \|\| !cbSense);
84	AssertPtr(pbCmd);
85	Assert(cbCmd <= 16 && cbCmd >= 1);
86	const uint32_t cbBuf = pcbBuf ? *pcbBuf : 0;
87	if (pcbBuf)
88	*pcbBuf = 0;
89
90	int rc = VINF_SUCCESS;
91	int rcBSD = 0;
92	union ccb DeviceCCB;
93	union ccb *pDeviceCCB = &DeviceCCB;
94	u_int32_t fFlags;
95
96	memset(pDeviceCCB, 0, sizeof(DeviceCCB));
97	pDeviceCCB->ccb_h.path_id = pThis->Os.ScsiBus;
98	pDeviceCCB->ccb_h.target_id = pThis->Os.ScsiTargetID;
99	pDeviceCCB->ccb_h.target_lun = pThis->Os.ScsiLunID;
100
101	/* The SCSI INQUIRY command can't be passed through directly. */
102	if (pbCmd[0] == SCSI_INQUIRY)
103	{
104	pDeviceCCB->ccb_h.func_code = XPT_GDEV_TYPE;
105
106	rcBSD = ioctl(RTFileToNative(pThis->Os.hFileDevice), CAMIOCOMMAND, pDeviceCCB);
107	if (!rcBSD)
108	{
109	uint32_t cbCopy = cbBuf < sizeof(struct scsi_inquiry_data)
110	? cbBuf
111	: sizeof(struct scsi_inquiry_data);;
112	memcpy(pvBuf, &pDeviceCCB->cgd.inq_data, cbCopy);
113	memset(pbSense, 0, cbSense);
114
115	if (pcbBuf)
116	*pcbBuf = cbCopy;
117	}
118	else
119	rc = RTErrConvertFromErrno(errno);
120	}
121	else
122	{
123	/* Copy the CDB. */
124	memcpy(&pDeviceCCB->csio.cdb_io.cdb_bytes, pbCmd, cbCmd);
125
126	/* Set direction. */
127	if (enmTxDir == PDMMEDIATXDIR_NONE)
128	fFlags = CAM_DIR_NONE;
129	else if (enmTxDir == PDMMEDIATXDIR_FROM_DEVICE)
130	fFlags = CAM_DIR_IN;
131	else
132	fFlags = CAM_DIR_OUT;
133
134	fFlags \|= CAM_DEV_QFRZDIS;
135
136	cam_fill_csio(&pDeviceCCB->csio, 1, NULL, fFlags, MSG_SIMPLE_Q_TAG,
137	(u_int8_t *)pvBuf, cbBuf, cbSense, cbCmd,
138	cTimeoutMillies ? cTimeoutMillies : 30000/* timeout */);
139
140	/* Send command */
141	rcBSD = ioctl(RTFileToNative(pThis->Os.hFileDevice), CAMIOCOMMAND, pDeviceCCB);
142	if (!rcBSD)
143	{
144	switch (pDeviceCCB->ccb_h.status & CAM_STATUS_MASK)
145	{
146	case CAM_REQ_CMP:
147	rc = VINF_SUCCESS;
148	break;
149	case CAM_SEL_TIMEOUT:
150	rc = VERR_DEV_IO_ERROR;
151	break;
152	case CAM_CMD_TIMEOUT:
153	rc = VERR_TIMEOUT;
154	break;
155	default:
156	rc = VERR_DEV_IO_ERROR;
157	}
158
159	if (pcbBuf)
160	*pcbBuf = cbBuf - pDeviceCCB->csio.resid;
161
162	if (pbSense)
163	memcpy(pbSense, &pDeviceCCB->csio.sense_data,
164	cbSense - pDeviceCCB->csio.sense_resid);
165	}
166	else
167	rc = RTErrConvertFromErrno(errno);
168	}
169
170	return rc;
171	}
172
173
174	DECLHIDDEN(size_t) drvHostBaseScsiCmdGetBufLimitOs(PDRVHOSTBASE pThis)
175	{
176	RT_NOREF(pThis);
177
178	return FBSD_SCSI_MAX_BUFFER_SIZE;
179	}
180
181
182	DECLHIDDEN(int) drvHostBaseGetMediaSizeOs(PDRVHOSTBASE pThis, uint64_t *pcb)
183	{
184	/*
185	* Try a READ_CAPACITY command...
186	*/
187	struct
188	{
189	uint32_t cBlocks;
190	uint32_t cbBlock;
191	} Buf = {0, 0};
192	uint32_t cbBuf = sizeof(Buf);
193	uint8_t abCmd[16] =
194	{
195	SCSI_READ_CAPACITY, 0, 0, 0, 0, 0, 0,
196	0,0,0,0,0,0,0,0,0
197	};
198	int rc = drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_FROM_DEVICE, &Buf, &cbBuf, NULL, 0, 0);
199	if (RT_SUCCESS(rc))
200	{
201	Assert(cbBuf == sizeof(Buf));
202	Buf.cBlocks = RT_BE2H_U32(Buf.cBlocks);
203	Buf.cbBlock = RT_BE2H_U32(Buf.cbBlock);
204	//if (Buf.cbBlock > 2048) /* everyone else is doing this... check if it needed/right.*/
205	// Buf.cbBlock = 2048;
206	pThis->Os.cbBlock = Buf.cbBlock;
207
208	pcb = (uint64_t)Buf.cBlocks Buf.cbBlock;
209	}
210	return rc;
211	}
212
213
214	DECLHIDDEN(int) drvHostBaseReadOs(PDRVHOSTBASE pThis, uint64_t off, void *pvBuf, size_t cbRead)
215	{
216	int rc = VINF_SUCCESS;
217
218	if (pThis->Os.cbBlock)
219	{
220	/*
221	* Issue a READ(12) request.
222	*/
223	do
224	{
225	const uint32_t LBA = off / pThis->Os.cbBlock;
226	AssertReturn(!(off % pThis->Os.cbBlock), VERR_INVALID_PARAMETER);
227	uint32_t cbRead32 = cbRead > FBSD_SCSI_MAX_BUFFER_SIZE
228	? FBSD_SCSI_MAX_BUFFER_SIZE
229	: (uint32_t)cbRead;
230	const uint32_t cBlocks = cbRead32 / pThis->Os.cbBlock;
231	AssertReturn(!(cbRead % pThis->Os.cbBlock), VERR_INVALID_PARAMETER);
232	uint8_t abCmd[16] =
233	{
234	SCSI_READ_12, 0,
235	RT_BYTE4(LBA), RT_BYTE3(LBA), RT_BYTE2(LBA), RT_BYTE1(LBA),
236	RT_BYTE4(cBlocks), RT_BYTE3(cBlocks), RT_BYTE2(cBlocks), RT_BYTE1(cBlocks),
237	0, 0, 0, 0, 0
238	};
239	rc = drvHostBaseScsiCmdOs(pThis, abCmd, 12, PDMMEDIATXDIR_FROM_DEVICE, pvBuf, &cbRead32, NULL, 0, 0);
240
241	off += cbRead32;
242	cbRead -= cbRead32;
243	pvBuf = (uint8_t *)pvBuf + cbRead32;
244	} while ((cbRead > 0) && RT_SUCCESS(rc));
245	}
246	else
247	rc = VERR_MEDIA_NOT_PRESENT;
248
249	return rc;
250	}
251
252
253	DECLHIDDEN(int) drvHostBaseWriteOs(PDRVHOSTBASE pThis, uint64_t off, const void *pvBuf, size_t cbWrite)
254	{
255	RT_NOREF4(pThis, off, pvBuf, cbWrite);
256	return VERR_WRITE_PROTECT;
257	}
258
259
260	DECLHIDDEN(int) drvHostBaseFlushOs(PDRVHOSTBASE pThis)
261	{
262	RT_NOREF1(pThis);
263	return VINF_SUCCESS;
264	}
265
266
267	DECLHIDDEN(int) drvHostBaseDoLockOs(PDRVHOSTBASE pThis, bool fLock)
268	{
269	uint8_t abCmd[16] =
270	{
271	SCSI_PREVENT_ALLOW_MEDIUM_REMOVAL, 0, 0, 0, fLock, 0,
272	0,0,0,0,0,0,0,0,0,0
273	};
274	return drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_NONE, NULL, NULL, NULL, 0, 0);
275	}
276
277
278	DECLHIDDEN(int) drvHostBaseEjectOs(PDRVHOSTBASE pThis)
279	{
280	uint8_t abCmd[16] =
281	{
282	SCSI_START_STOP_UNIT, 0, 0, 0, 2 /eject+stop/, 0,
283	0,0,0,0,0,0,0,0,0,0
284	};
285	return drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_NONE, NULL, NULL, NULL, 0, 0);
286	}
287
288
289	DECLHIDDEN(int) drvHostBaseQueryMediaStatusOs(PDRVHOSTBASE pThis, bool pfMediaChanged, bool pfMediaPresent)
290	{
291	/*
292	* Issue a TEST UNIT READY request.
293	*/
294	*pfMediaChanged = false;
295	*pfMediaPresent = false;
296	uint8_t abCmd[16] = { SCSI_TEST_UNIT_READY, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
297	uint8_t abSense[32];
298	int rc = drvHostBaseScsiCmdOs(pThis, abCmd, 6, PDMMEDIATXDIR_NONE, NULL, NULL, abSense, sizeof(abSense), 0);
299	if (RT_SUCCESS(rc))
300	*pfMediaPresent = true;
301	else if ( rc == VERR_UNRESOLVED_ERROR
302	&& abSense[2] == 6 /* unit attention */
303	&& ( (abSense[12] == 0x29 && abSense[13] < 5 /* reset */)
304	\|\| (abSense[12] == 0x2a && abSense[13] == 0 /* parameters changed */) //???
305	\|\| (abSense[12] == 0x3f && abSense[13] == 0 /* target operating conditions have changed */) //???
306	\|\| (abSense[12] == 0x3f && abSense[13] == 2 /* changed operating definition */) //???
307	\|\| (abSense[12] == 0x3f && abSense[13] == 3 /* inquiry parameters changed */)
308	\|\| (abSense[12] == 0x3f && abSense[13] == 5 /* device identifier changed */)
309	)
310	)
311	{
312	*pfMediaPresent = false;
313	*pfMediaChanged = true;
314	rc = VINF_SUCCESS;
315	/** @todo check this media change stuff on Darwin. */
316	}
317
318	return rc;
319	}
320
321
322	DECLHIDDEN(void) drvHostBaseInitOs(PDRVHOSTBASE pThis)
323	{
324	pThis->Os.hFileDevice = NIL_RTFILE;
325	}
326
327
328	DECLHIDDEN(int) drvHostBaseOpenOs(PDRVHOSTBASE pThis, bool fReadOnly)
329	{
330	RT_NOREF(fReadOnly);
331	RTFILE hFileDevice;
332	int rc = RTFileOpen(&hFileDevice, pThis->pszDevice, RTFILE_O_READWRITE \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
333	if (RT_FAILURE(rc))
334	return rc;
335
336	/*
337	* The current device handle can't passthrough SCSI commands.
338	* We have to get he passthrough device path and open this.
339	*/
340	union ccb DeviceCCB;
341	memset(&DeviceCCB, 0, sizeof(DeviceCCB));
342
343	DeviceCCB.ccb_h.func_code = XPT_GDEVLIST;
344	int rcBSD = ioctl(RTFileToNative(hFileDevice), CAMGETPASSTHRU, &DeviceCCB);
345	if (!rcBSD)
346	{
347	char *pszPassthroughDevice = NULL;
348	rc = RTStrAPrintf(&pszPassthroughDevice, "/dev/%s%u",
349	DeviceCCB.cgdl.periph_name, DeviceCCB.cgdl.unit_number);
350	if (rc >= 0)
351	{
352	RTFILE hPassthroughDevice;
353	rc = RTFileOpen(&hPassthroughDevice, pszPassthroughDevice, RTFILE_O_READWRITE \| RTFILE_O_OPEN \| RTFILE_O_DENY_NONE);
354	RTStrFree(pszPassthroughDevice);
355	if (RT_SUCCESS(rc))
356	{
357	/* Get needed device parameters. */
358
359	/*
360	* The device path, target id and lun id. Those are
361	* needed for the SCSI passthrough ioctl.
362	*/
363	memset(&DeviceCCB, 0, sizeof(DeviceCCB));
364	DeviceCCB.ccb_h.func_code = XPT_GDEVLIST;
365
366	rcBSD = ioctl(RTFileToNative(hPassthroughDevice), CAMGETPASSTHRU, &DeviceCCB);
367	if (!rcBSD)
368	{
369	if (DeviceCCB.cgdl.status != CAM_GDEVLIST_ERROR)
370	{
371	pThis->Os.ScsiBus = DeviceCCB.ccb_h.path_id;
372	pThis->Os.ScsiTargetID = DeviceCCB.ccb_h.target_id;
373	pThis->Os.ScsiLunID = DeviceCCB.ccb_h.target_lun;
374	pThis->Os.hFileDevice = hPassthroughDevice;
375	}
376	else
377	{
378	/* The passthrough device wasn't found. */
379	rc = VERR_NOT_FOUND;
380	}
381	}
382	else
383	rc = RTErrConvertFromErrno(errno);
384
385	if (RT_FAILURE(rc))
386	RTFileClose(hPassthroughDevice);
387	}
388	}
389	else
390	rc = VERR_NO_STR_MEMORY;
391	}
392	else
393	rc = RTErrConvertFromErrno(errno);
394
395	RTFileClose(hFileDevice);
396	return rc;
397	}
398
399
400	DECLHIDDEN(int) drvHostBaseMediaRefreshOs(PDRVHOSTBASE pThis)
401	{
402	RT_NOREF(pThis);
403	return VINF_SUCCESS;
404	}
405
406
407	DECLHIDDEN(bool) drvHostBaseIsMediaPollingRequiredOs(PDRVHOSTBASE pThis)
408	{
409	if (pThis->enmType == PDMMEDIATYPE_CDROM \|\| pThis->enmType == PDMMEDIATYPE_DVD)
410	return true;
411
412	AssertMsgFailed(("FreeBSD supports only CD/DVD host drive access\n"));
413	return false;
414	}
415
416
417	DECLHIDDEN(void) drvHostBaseDestructOs(PDRVHOSTBASE pThis)
418	{
419	/*
420	* Unlock the drive if we've locked it or we're in passthru mode.
421	*/
422	if ( pThis->fLocked
423	&& pThis->Os.hFileDevice != NIL_RTFILE
424	&& pThis->pfnDoLock)
425	{
426	int rc = pThis->pfnDoLock(pThis, false);
427	if (RT_SUCCESS(rc))
428	pThis->fLocked = false;
429	}
430
431	if (pThis->Os.hFileDevice != NIL_RTFILE)
432	{
433	int rc = RTFileClose(pThis->Os.hFileDevice);
434	AssertRC(rc);
435	pThis->Os.hFileDevice = NIL_RTFILE;
436	}
437	}
438

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source: vbox/trunk/src/VBox/Devices/Storage/DrvHostBase-freebsd.cpp@ 91942

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