scsi.c@ 43757

Last change on this file since 43757 was 43757, checked in by vboxsync, 12 years ago
BIOS: Log detected SCSI devices.
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File size: 20.0 KB

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1	/* $Id: scsi.c 43757 2012-10-26 14:02:11Z vboxsync $ */
2	/** @file
3	* SCSI host adapter driver to boot from SCSI disks
4	*/
5
6	/*
7	* Copyright (C) 2004-2011 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	#include <stdint.h>
19	#include <string.h>
20	#include "biosint.h"
21	#include "inlines.h"
22	#include "ebda.h"
23
24
25	#if DEBUG_SCSI
26	# define DBG_SCSI(...) BX_INFO(__VA_ARGS__)
27	#else
28	# define DBG_SCSI(...)
29	#endif
30
31	#define VBSCSI_BUSY (1 << 0)
32	#define VBSCSI_ERROR (1 << 1)
33
34	/* The I/O port of the BusLogic SCSI adapter. */
35	#define BUSLOGIC_BIOS_IO_PORT 0x330
36	/* The I/O port of the LsiLogic SCSI adapter. */
37	#define LSILOGIC_BIOS_IO_PORT 0x340
38	/* The I/O port of the LsiLogic SAS adapter. */
39	#define LSILOGIC_SAS_BIOS_IO_PORT 0x350
40
41	#define VBSCSI_REGISTER_STATUS 0
42	#define VBSCSI_REGISTER_COMMAND 0
43	#define VBSCSI_REGISTER_DATA_IN 1
44	#define VBSCSI_REGISTER_IDENTIFY 2
45	#define VBSCSI_REGISTER_RESET 3
46	#define VBSCSI_REGISTER_DEVSTAT 3
47
48	#define VBSCSI_MAX_DEVICES 16 /* Maximum number of devices a SCSI device can have. */
49
50	/* Command opcodes. */
51	#define SCSI_INQUIRY 0x12
52	#define SCSI_READ_CAPACITY 0x25
53	#define SCSI_READ_10 0x28
54	#define SCSI_WRITE_10 0x2a
55
56	/* Data transfer direction. */
57	#define SCSI_TXDIR_FROM_DEVICE 0
58	#define SCSI_TXDIR_TO_DEVICE 1
59
60	#pragma pack(1)
61
62	/* READ_10/WRITE_10 CDB layout. */
63	typedef struct {
64	uint16_t command; /* Command. */
65	uint32_t lba; /* LBA, MSB first! */
66	uint8_t pad1; /* Unused. */
67	uint16_t nsect; /* Sector count, MSB first! */
68	uint8_t pad2; /* Unused. */
69	} cdb_rw10;
70
71	#pragma pack()
72
73	ct_assert(sizeof(cdb_rw10) == 10);
74
75
76	void insb_discard(unsigned nbytes, unsigned port);
77	#pragma aux insb_discard = \
78	".286" \
79	"again:" \
80	"in al,dx" \
81	"loop again" \
82	parm [cx] [dx] modify exact [cx ax] nomemory;
83
84
85	int scsi_cmd_data_in(uint16_t io_base, uint8_t target_id, uint8_t __far *aCDB,
86	uint8_t cbCDB, uint8_t __far *buffer, uint32_t cbBuffer)
87	{
88	/* Check that the adapter is ready. */
89	uint8_t status, sizes;
90	uint16_t i;
91
92	do
93	status = inb(io_base + VBSCSI_REGISTER_STATUS);
94	while (status & VBSCSI_BUSY);
95
96
97	sizes = ((cbBuffer >> 12) & 0xF0) \| cbCDB;
98	outb(io_base + VBSCSI_REGISTER_COMMAND, target_id); /* Write the target ID. */
99	outb(io_base + VBSCSI_REGISTER_COMMAND, SCSI_TXDIR_FROM_DEVICE); /* Write the transfer direction. */
100	outb(io_base + VBSCSI_REGISTER_COMMAND, sizes); /* Write CDB size and top bufsize bits. */
101	outb(io_base + VBSCSI_REGISTER_COMMAND, cbBuffer); /* Write the buffer size. */
102	outb(io_base + VBSCSI_REGISTER_COMMAND, (cbBuffer >> 8));
103	for (i = 0; i < cbCDB; i++) /* Write the CDB. */
104	outb(io_base + VBSCSI_REGISTER_COMMAND, aCDB[i]);
105
106	/* Now wait for the command to complete. */
107	do
108	status = inb(io_base + VBSCSI_REGISTER_STATUS);
109	while (status & VBSCSI_BUSY);
110
111	/* Get the read data. */
112	rep_insb(buffer, cbBuffer, io_base + VBSCSI_REGISTER_DATA_IN);
113
114	return 0;
115	}
116
117	int scsi_cmd_data_out(uint16_t io_base, uint8_t target_id, uint8_t __far *aCDB,
118	uint8_t cbCDB, uint8_t __far *buffer, uint32_t cbBuffer)
119	{
120	/* Check that the adapter is ready. */
121	uint8_t status, sizes;
122	uint16_t i;
123
124	do
125	status = inb(io_base + VBSCSI_REGISTER_STATUS);
126	while (status & VBSCSI_BUSY);
127
128
129	sizes = ((cbBuffer >> 12) & 0xF0) \| cbCDB;
130	outb(io_base + VBSCSI_REGISTER_COMMAND, target_id); /* Write the target ID. */
131	outb(io_base + VBSCSI_REGISTER_COMMAND, SCSI_TXDIR_TO_DEVICE); /* Write the transfer direction. */
132	outb(io_base + VBSCSI_REGISTER_COMMAND, sizes); /* Write CDB size and top bufsize bits. */
133	outb(io_base + VBSCSI_REGISTER_COMMAND, cbBuffer); /* Write the buffer size. */
134	outb(io_base + VBSCSI_REGISTER_COMMAND, (cbBuffer >> 8));
135	for (i = 0; i < cbCDB; i++) /* Write the CDB. */
136	outb(io_base + VBSCSI_REGISTER_COMMAND, aCDB[i]);
137
138	/* Write data to I/O port. */
139	rep_outsb(buffer, cbBuffer, io_base+VBSCSI_REGISTER_DATA_IN);
140
141	/* Now wait for the command to complete. */
142	do
143	status = inb(io_base + VBSCSI_REGISTER_STATUS);
144	while (status & VBSCSI_BUSY);
145
146	return 0;
147	}
148
149	/**
150	* Read sectors from an attached SCSI device.
151	*
152	* @returns status code.
153	* @param bios_dsk Pointer to disk request packet (in the
154	* EBDA).
155	*/
156	int scsi_read_sectors(bio_dsk_t __far *bios_dsk)
157	{
158	uint8_t rc;
159	cdb_rw10 cdb;
160	uint16_t count;
161	uint16_t io_base;
162	uint8_t target_id;
163	uint8_t device_id;
164
165	device_id = VBOX_GET_SCSI_DEVICE(bios_dsk->drqp.dev_id);
166	if (device_id > BX_MAX_SCSI_DEVICES)
167	BX_PANIC("scsi_read_sectors: device_id out of range %d\n", device_id);
168
169	count = bios_dsk->drqp.nsect;
170
171	/* Prepare a CDB. */
172	cdb.command = SCSI_READ_10;
173	cdb.lba = swap_32(bios_dsk->drqp.lba);
174	cdb.pad1 = 0;
175	cdb.nsect = swap_16(count);
176	cdb.pad2 = 0;
177
178
179	io_base = bios_dsk->scsidev[device_id].io_base;
180	target_id = bios_dsk->scsidev[device_id].target_id;
181
182	rc = scsi_cmd_data_in(io_base, target_id, (void __far *)&cdb, 10,
183	bios_dsk->drqp.buffer, (count * 512L));
184
185	if (!rc)
186	{
187	bios_dsk->drqp.trsfsectors = count;
188	bios_dsk->drqp.trsfbytes = count * 512L;
189	}
190
191	return rc;
192	}
193
194	/**
195	* Write sectors to an attached SCSI device.
196	*
197	* @returns status code.
198	* @param bios_dsk Pointer to disk request packet (in the
199	* EBDA).
200	*/
201	int scsi_write_sectors(bio_dsk_t __far *bios_dsk)
202	{
203	uint8_t rc;
204	cdb_rw10 cdb;
205	uint16_t count;
206	uint16_t io_base;
207	uint8_t target_id;
208	uint8_t device_id;
209
210	device_id = VBOX_GET_SCSI_DEVICE(bios_dsk->drqp.dev_id);
211	if (device_id > BX_MAX_SCSI_DEVICES)
212	BX_PANIC("scsi_write_sectors: device_id out of range %d\n", device_id);
213
214	count = bios_dsk->drqp.nsect;
215
216	/* Prepare a CDB. */
217	cdb.command = SCSI_WRITE_10;
218	cdb.lba = swap_32(bios_dsk->drqp.lba);
219	cdb.pad1 = 0;
220	cdb.nsect = swap_16(count);
221	cdb.pad2 = 0;
222
223	io_base = bios_dsk->scsidev[device_id].io_base;
224	target_id = bios_dsk->scsidev[device_id].target_id;
225
226	rc = scsi_cmd_data_out(io_base, target_id, (void __far *)&cdb, 10,
227	bios_dsk->drqp.buffer, (count * 512L));
228
229	if (!rc)
230	{
231	bios_dsk->drqp.trsfsectors = count;
232	bios_dsk->drqp.trsfbytes = (count * 512L);
233	}
234
235	return rc;
236	}
237
238
239	//@todo: move
240	#define ATA_DATA_NO 0x00
241	#define ATA_DATA_IN 0x01
242	#define ATA_DATA_OUT 0x02
243
244	/**
245	* Perform a "packet style" read with supplied CDB.
246	*
247	* @returns status code.
248	* @param bios_dsk Pointer to disk request packet (in the
249	* EBDA).
250	*/
251	uint16_t scsi_cmd_packet(uint16_t device_id, uint8_t cmdlen, char __far *cmdbuf,
252	uint16_t before, uint32_t length, uint8_t inout, char __far *buffer)
253	{
254	bio_dsk_t __far *bios_dsk = read_word(0x0040, 0x000E) :> &EbdaData->bdisk;
255	uint32_t read_len;
256	uint8_t status, sizes;
257	uint16_t i;
258	uint16_t io_base;
259	uint8_t target_id;
260
261	/* Data out is currently not supported. */
262	if (inout == ATA_DATA_OUT) {
263	BX_INFO("%s: DATA_OUT not supported yet\n", __func__);
264	return 1;
265	}
266
267	/* Convert to SCSI specific device number. */
268	device_id = VBOX_GET_SCSI_DEVICE(device_id);
269
270	DBG_SCSI("%s: reading %lu bytes, skip %u/%u, device %d, target %d\n", __func__,
271	length, bios_dsk->drqp.skip_b, bios_dsk->drqp.skip_a,
272	device_id, bios_dsk->scsidev[device_id].target_id);
273	DBG_SCSI("%s: reading %u %u-byte sectors\n", __func__,
274	bios_dsk->drqp.nsect, bios_dsk->drqp.sect_sz);
275
276	cmdlen -= 2; /* ATAPI uses 12-byte command packets for a READ 10. */
277
278	io_base = bios_dsk->scsidev[device_id].io_base;
279	target_id = bios_dsk->scsidev[device_id].target_id;
280
281	/* Wait until the adapter is ready. */
282	do
283	status = inb(io_base + VBSCSI_REGISTER_STATUS);
284	while (status & VBSCSI_BUSY);
285
286	/* On the SCSI level, we have to transfer whole sectors. */
287	/* NB: With proper residual length support, this should not be necessary; we should
288	* be able to avoid transferring the 'after' part of the sector.
289	*/
290	read_len = length + before + bios_dsk->drqp.skip_a;
291
292	sizes = (((read_len) >> 12) & 0xF0) \| cmdlen;
293	outb(io_base + VBSCSI_REGISTER_COMMAND, target_id); /* Write the target ID. */
294	outb(io_base + VBSCSI_REGISTER_COMMAND, SCSI_TXDIR_FROM_DEVICE); /* Write the transfer direction. */
295	outb(io_base + VBSCSI_REGISTER_COMMAND, sizes); /* Write the CDB size. */
296	outb(io_base + VBSCSI_REGISTER_COMMAND, read_len); /* Write the buffer size. */
297	outb(io_base + VBSCSI_REGISTER_COMMAND, (read_len) >> 8);
298	for (i = 0; i < cmdlen; i++) /* Write the CDB. */
299	outb(io_base + VBSCSI_REGISTER_COMMAND, cmdbuf[i]);
300
301	/* Now wait for the command to complete. */
302	do
303	status = inb(io_base + VBSCSI_REGISTER_STATUS);
304	while (status & VBSCSI_BUSY);
305
306	/* If any error occurred, inform the caller and don't bother reading the data. */
307	if (status & VBSCSI_ERROR) {
308	outb(io_base + VBSCSI_REGISTER_RESET, 0);
309
310	status = inb(io_base + VBSCSI_REGISTER_DEVSTAT);
311	DBG_SCSI("%s: read failed, device status %02X\n", __func__, status);
312	return 3;
313	}
314
315	/* Transfer the data read from the device. */
316
317	if (before) /* If necessary, throw away data which needs to be skipped. */
318	insb_discard(before, io_base + VBSCSI_REGISTER_DATA_IN);
319
320	bios_dsk->drqp.trsfbytes = length;
321
322	/* The requested length may be exactly 64K or more, which needs
323	* a bit of care when we're using 16-bit 'rep ins'.
324	*/
325	while (length > 32768) {
326	DBG_SCSI("%s: reading 32K to %X:%X\n", __func__, FP_SEG(buffer), FP_OFF(buffer));
327	rep_insb(buffer, 32768, io_base + VBSCSI_REGISTER_DATA_IN);
328	length -= 32768;
329	buffer = (FP_SEG(buffer) + (32768 >> 4)) :> FP_OFF(buffer);
330	}
331
332	DBG_SCSI("%s: reading %ld bytes to %X:%X\n", __func__, length, FP_SEG(buffer), FP_OFF(buffer));
333	rep_insb(buffer, length, io_base + VBSCSI_REGISTER_DATA_IN);
334
335	if (bios_dsk->drqp.skip_a) /* If necessary, throw away more data. */
336	insb_discard(bios_dsk->drqp.skip_a, io_base + VBSCSI_REGISTER_DATA_IN);
337
338	return 0;
339	}
340
341	/**
342	* Enumerate attached devices.
343	*
344	* @returns nothing.
345	* @param io_base The I/O base port of the controller.
346	*/
347	void scsi_enumerate_attached_devices(uint16_t io_base)
348	{
349	int i;
350	uint8_t buffer[0x0200];
351	bio_dsk_t __far *bios_dsk;
352
353	bios_dsk = read_word(0x0040, 0x000E) :> &EbdaData->bdisk;
354
355	/* Go through target devices. */
356	for (i = 0; i < VBSCSI_MAX_DEVICES; i++)
357	{
358	uint8_t rc;
359	uint8_t aCDB[10];
360	uint8_t hd_index, devcount_scsi;
361
362	aCDB[0] = SCSI_INQUIRY;
363	aCDB[1] = 0;
364	aCDB[2] = 0;
365	aCDB[3] = 0;
366	aCDB[4] = 5; /* Allocation length. */
367	aCDB[5] = 0;
368
369	rc = scsi_cmd_data_in(io_base, i, aCDB, 6, buffer, 5);
370	if (rc != 0)
371	BX_PANIC("%s: SCSI_INQUIRY failed\n", __func__);
372
373	/* Check the attached device. */
374	if ( ((buffer[0] & 0xe0) == 0)
375	&& ((buffer[0] & 0x1f) == 0x00))
376	{
377	DBG_SCSI("%s: Disk detected at %d\n", __func__, i);
378
379	/* We add the disk only if the maximum is not reached yet. */
380	if (bios_dsk->scsi_devcount < BX_MAX_SCSI_DEVICES)
381	{
382	uint32_t sectors, sector_size, cylinders;
383	uint16_t heads, sectors_per_track;
384	uint8_t hdcount;
385
386	/* Issue a read capacity command now. */
387	_fmemset(aCDB, 0, sizeof(aCDB));
388	aCDB[0] = SCSI_READ_CAPACITY;
389
390	rc = scsi_cmd_data_in(io_base, i, aCDB, 10, buffer, 8);
391	if (rc != 0)
392	BX_PANIC("%s: SCSI_READ_CAPACITY failed\n", __func__);
393
394	/* Build sector number and size from the buffer. */
395	//@todo: byte swapping for dword sized items should be farmed out...
396	sectors = ((uint32_t)buffer[0] << 24)
397	\| ((uint32_t)buffer[1] << 16)
398	\| ((uint32_t)buffer[2] << 8)
399	\| ((uint32_t)buffer[3]);
400
401	sector_size = ((uint32_t)buffer[4] << 24)
402	\| ((uint32_t)buffer[5] << 16)
403	\| ((uint32_t)buffer[6] << 8)
404	\| ((uint32_t)buffer[7]);
405
406	/* We only support the disk if sector size is 512 bytes. */
407	if (sector_size != 512)
408	{
409	/* Leave a log entry. */
410	BX_INFO("Disk %d has an unsupported sector size of %u\n", i, sector_size);
411	continue;
412	}
413
414	/* We need to calculate the geometry for the disk. From
415	* the BusLogic driver in the Linux kernel.
416	*/
417	if (sectors >= (uint32_t)4 * 1024 * 1024)
418	{
419	heads = 255;
420	sectors_per_track = 63;
421	}
422	else if (sectors >= (uint32_t)2 * 1024 * 1024)
423	{
424	heads = 128;
425	sectors_per_track = 32;
426	}
427	else
428	{
429	heads = 64;
430	sectors_per_track = 32;
431	}
432	cylinders = (uint32_t)(sectors / (heads * sectors_per_track));
433	devcount_scsi = bios_dsk->scsi_devcount;
434
435	/* Calculate index into the generic disk table. */
436	hd_index = devcount_scsi + BX_MAX_ATA_DEVICES;
437
438	bios_dsk->scsidev[devcount_scsi].io_base = io_base;
439	bios_dsk->scsidev[devcount_scsi].target_id = i;
440	bios_dsk->devices[hd_index].type = DSK_TYPE_SCSI;
441	bios_dsk->devices[hd_index].device = DSK_DEVICE_HD;
442	bios_dsk->devices[hd_index].removable = 0;
443	bios_dsk->devices[hd_index].lock = 0;
444	bios_dsk->devices[hd_index].blksize = sector_size;
445	bios_dsk->devices[hd_index].translation = GEO_TRANSLATION_LBA;
446
447	/* Write LCHS values. */
448	bios_dsk->devices[hd_index].lchs.heads = heads;
449	bios_dsk->devices[hd_index].lchs.spt = sectors_per_track;
450	if (cylinders > 1024)
451	bios_dsk->devices[hd_index].lchs.cylinders = 1024;
452	else
453	bios_dsk->devices[hd_index].lchs.cylinders = (uint16_t)cylinders;
454
455	BX_INFO("SCSI %d-ID#%d: LCHS=%u/%u/%u %ld sectors\n", devcount_scsi,
456	i, (uint16_t)cylinders, heads, sectors_per_track, sectors);
457
458	/* Write PCHS values. */
459	bios_dsk->devices[hd_index].pchs.heads = heads;
460	bios_dsk->devices[hd_index].pchs.spt = sectors_per_track;
461	if (cylinders > 1024)
462	bios_dsk->devices[hd_index].pchs.cylinders = 1024;
463	else
464	bios_dsk->devices[hd_index].pchs.cylinders = (uint16_t)cylinders;
465
466	bios_dsk->devices[hd_index].sectors = sectors;
467
468	/* Store the id of the disk in the ata hdidmap. */
469	hdcount = bios_dsk->hdcount;
470	bios_dsk->hdidmap[hdcount] = devcount_scsi + BX_MAX_ATA_DEVICES;
471	hdcount++;
472	bios_dsk->hdcount = hdcount;
473
474	/* Update hdcount in the BDA. */
475	hdcount = read_byte(0x40, 0x75);
476	hdcount++;
477	write_byte(0x40, 0x75, hdcount);
478
479	devcount_scsi++;
480	bios_dsk->scsi_devcount = devcount_scsi;
481	}
482	else
483	{
484	/* We reached the maximum of SCSI disks we can boot from. We can quit detecting. */
485	break;
486	}
487	}
488	else if ( ((buffer[0] & 0xe0) == 0)
489	&& ((buffer[0] & 0x1f) == 0x05))
490	{
491	uint8_t cdcount;
492	uint8_t removable;
493
494	BX_INFO("SCSI %d-ID#%d: CD/DVD-ROM\n", devcount_scsi, i);
495
496	/* Calculate index into the generic device table. */
497	hd_index = devcount_scsi + BX_MAX_ATA_DEVICES;
498
499	removable = buffer[1] & 0x80 ? 1 : 0;
500
501	bios_dsk->scsidev[devcount_scsi].io_base = io_base;
502	bios_dsk->scsidev[devcount_scsi].target_id = i;
503	bios_dsk->devices[hd_index].type = DSK_TYPE_SCSI;
504	bios_dsk->devices[hd_index].device = DSK_DEVICE_CDROM;
505	bios_dsk->devices[hd_index].removable = removable;
506	bios_dsk->devices[hd_index].blksize = 2048;
507
508	/* Store the ID of the device in the BIOS cdidmap. */
509	cdcount = bios_dsk->cdcount;
510	bios_dsk->cdidmap[cdcount] = devcount_scsi + BX_MAX_ATA_DEVICES;
511	cdcount++;
512	bios_dsk->cdcount = cdcount;
513
514	devcount_scsi++;
515	bios_dsk->scsi_devcount = devcount_scsi;
516	}
517	else
518	DBG_SCSI("%s: No supported device detected at %d\n", __func__, i);
519	}
520	}
521
522	/**
523	* Init the SCSI driver and detect attached disks.
524	*/
525	void BIOSCALL scsi_init(void)
526	{
527	uint8_t identifier;
528	bio_dsk_t __far *bios_dsk;
529
530	bios_dsk = read_word(0x0040, 0x000E) :> &EbdaData->bdisk;
531
532	bios_dsk->scsi_devcount = 0;
533
534	identifier = 0;
535
536	/* Detect the BusLogic adapter. */
537	outb(BUSLOGIC_BIOS_IO_PORT+VBSCSI_REGISTER_IDENTIFY, 0x55);
538	identifier = inb(BUSLOGIC_BIOS_IO_PORT+VBSCSI_REGISTER_IDENTIFY);
539
540	if (identifier == 0x55)
541	{
542	/* Detected - Enumerate attached devices. */
543	DBG_SCSI("scsi_init: BusLogic SCSI adapter detected\n");
544	outb(BUSLOGIC_BIOS_IO_PORT+VBSCSI_REGISTER_RESET, 0);
545	scsi_enumerate_attached_devices(BUSLOGIC_BIOS_IO_PORT);
546	}
547	else
548	{
549	DBG_SCSI("scsi_init: BusLogic SCSI adapter not detected\n");
550	}
551
552	/* Detect the LSI Logic parallel SCSI adapter. */
553	outb(LSILOGIC_BIOS_IO_PORT+VBSCSI_REGISTER_IDENTIFY, 0x55);
554	identifier = inb(LSILOGIC_BIOS_IO_PORT+VBSCSI_REGISTER_IDENTIFY);
555
556	if (identifier == 0x55)
557	{
558	/* Detected - Enumerate attached devices. */
559	DBG_SCSI("scsi_init: LSI Logic SCSI adapter detected\n");
560	outb(LSILOGIC_BIOS_IO_PORT+VBSCSI_REGISTER_RESET, 0);
561	scsi_enumerate_attached_devices(LSILOGIC_BIOS_IO_PORT);
562	}
563	else
564	{
565	DBG_SCSI("scsi_init: LSI Logic SCSI adapter not detected\n");
566	}
567
568	/* Detect the LSI Logic SAS adapter. */
569	outb(LSILOGIC_SAS_BIOS_IO_PORT+VBSCSI_REGISTER_IDENTIFY, 0x55);
570	identifier = inb(LSILOGIC_SAS_BIOS_IO_PORT+VBSCSI_REGISTER_IDENTIFY);
571
572	if (identifier == 0x55)
573	{
574	/* Detected - Enumerate attached devices. */
575	DBG_SCSI("scsi_init: LSI Logic SAS adapter detected\n");
576	outb(LSILOGIC_SAS_BIOS_IO_PORT+VBSCSI_REGISTER_RESET, 0);
577	scsi_enumerate_attached_devices(LSILOGIC_SAS_BIOS_IO_PORT);
578	}
579	else
580	{
581	DBG_SCSI("scsi_init: LSI Logic SAS adapter not detected\n");
582	}
583	}

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source: vbox/trunk/src/VBox/Devices/PC/BIOS/scsi.c@ 43757

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