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1.1 root 1: /*
2: * Written by Julian Elischer ([email protected])
3: * for TRW Financial Systems for use under the MACH(2.5) operating system.
4: *
5: * TRW Financial Systems, in accordance with their agreement with Carnegie
6: * Mellon University, makes this software available to CMU to distribute
7: * or use in any manner that they see fit as long as this message is kept with
8: * the software. For this reason TFS also grants any other persons or
9: * organisations permission to use or modify this software.
10: *
11: * TFS supplies this software to be publicly redistributed
12: * on the understanding that TFS is not responsible for the correct
13: * functioning of this software in any circumstances.
14: *
15: * PATCHES MAGIC LEVEL PATCH THAT GOT US HERE
16: * -------------------- ----- ----------------------
17: * CURRENT PATCH LEVEL: 1 00098
18: * -------------------- ----- ----------------------
19: *
20: * 16 Feb 93 Julian Elischer ADDED for SCSI system
21: *
22: */
23:
24: /*
25: * Ported to run under 386BSD by Julian Elischer ([email protected]) Sept 1992
26: */
27:
28: #define SPLSD splbio
29: #define ESUCCESS 0
30: #include <sd.h>
31: #include <sys/types.h>
32: #include <sys/param.h>
33: #include <sys/dkbad.h>
34: #include <sys/systm.h>
35: #include <sys/conf.h>
36: #include <sys/file.h>
37: #include <sys/stat.h>
38: #include <sys/ioctl.h>
39: #include <sys/buf.h>
40: #include <sys/uio.h>
41: #include <sys/malloc.h>
42: #include <sys/errno.h>
43: #include <sys/disklabel.h>
44: #include <scsi/scsi_all.h>
45: #include <scsi/scsi_disk.h>
46: #include <scsi/scsiconf.h>
47:
48: long int sdstrats,sdqueues;
49:
50:
51: #ifdef DDB
52: int Debugger();
53: #else
54: #define Debugger()
55: #endif
56:
57:
58: #define PAGESIZ 4096
59: #define SECSIZE 512
60: #define PDLOCATION 29
61: #define BOOTRECORDSIGNATURE (0x55aa & 0x00ff)
62: #define SDOUTSTANDING 2
63: #define SDQSIZE 4
64: #define SD_RETRIES 4
65:
66: #define MAKESDDEV(maj, unit, part) (makedev(maj,((unit<<3)+part)))
67: #define UNITSHIFT 3
68: #define PARTITION(z) (minor(z) & 0x07)
69: #define RAW_PART 3
70: #define UNIT(z) ( (minor(z) >> UNITSHIFT) )
71:
72: #define WHOLE_DISK(unit) ( (unit << UNITSHIFT) + RAW_PART )
73:
74: struct buf sd_buf_queue[NSD];
75: int sd_done();
76: int sdstrategy();
77:
78: int sd_debug = 0;
79:
80: struct scsi_xfer *sd_free_xfer[NSD];
81: int sd_xfer_block_wait[NSD];
82:
83: struct sd_data
84: {
85: int flags;
86: #define SDVALID 0x02 /* PARAMS LOADED */
87: #define SDINIT 0x04 /* device has been init'd */
88: #define SDWAIT 0x08 /* device has someone waiting */
89: #define SDHAVELABEL 0x10 /* have read the label */
90: #define SDDOSPART 0x20 /* Have read the DOS partition table */
91: #define SDWRITEPROT 0x40 /* Device in readonly mode (S/W)*/
92: struct scsi_switch *sc_sw; /* address of scsi low level switch */
93: int ctlr; /* so they know which one we want */
94: int targ; /* our scsi target ID */
95: int lu; /* out scsi lu */
96: long int ad_info; /* info about the adapter */
97: int cmdscount; /* cmds allowed outstanding by board*/
98: int wlabel; /* label is writable */
99: struct disk_parms
100: {
101: u_char heads; /* Number of heads */
102: u_short cyls; /* Number of cylinders */
103: u_char sectors;/*dubious*/ /* Number of sectors/track */
104: u_short secsiz; /* Number of bytes/sector */
105: u_long disksize; /* total number sectors */
106: }params;
107: struct disklabel disklabel;
108: struct dos_partition dosparts[NDOSPART]; /* DOS view of disk */
109: int partflags[MAXPARTITIONS]; /* per partition flags */
110: #define SDOPEN 0x01
111: int openparts; /* one bit for each open partition */
112: unsigned int sd_start_of_unix; /* unix vs dos partitions */
113: }sd_data[NSD];
114:
115:
116: static int next_sd_unit = 0;
117: /***********************************************************************\
118: * The routine called by the low level scsi routine when it discovers *
119: * A device suitable for this driver *
120: \***********************************************************************/
121:
122: int sdattach(ctlr,targ,lu,scsi_switch)
123: struct scsi_switch *scsi_switch;
124: {
125: int unit,i;
126: unsigned char *tbl;
127: struct sd_data *sd;
128: struct disk_parms *dp;
129: long int ad_info;
130: struct scsi_xfer *sd_scsi_xfer;
131:
132: unit = next_sd_unit++;
133: sd = sd_data + unit;
134: dp = &(sd->params);
135: if(scsi_debug & PRINTROUTINES) printf("sdattach: ");
136: /*******************************************************\
137: * Check we have the resources for another drive *
138: \*******************************************************/
139: if( unit >= NSD)
140: {
141: printf("Too many scsi disks..(%d > %d) reconfigure kernel",(unit + 1),NSD);
142: return(0);
143: }
144: /*******************************************************\
145: * Store information needed to contact our base driver *
146: \*******************************************************/
147: sd->sc_sw = scsi_switch;
148: sd->ctlr = ctlr;
149: sd->targ = targ;
150: sd->lu = lu;
151: if(sd->sc_sw->adapter_info)
152: {
153: sd->ad_info = ( (*(sd->sc_sw->adapter_info))(ctlr));
154: sd->cmdscount = sd->ad_info & AD_INF_MAX_CMDS;
155: if(sd->cmdscount > SDOUTSTANDING)
156: {
157: sd->cmdscount = SDOUTSTANDING;
158: }
159: }
160: else
161: {
162: sd->ad_info = 1;
163: sd->cmdscount = 1;
164: }
165:
166: i = sd->cmdscount;
167: sd_scsi_xfer = (struct scsi_xfer *)malloc(sizeof(struct scsi_xfer) * i
168: ,M_TEMP, M_NOWAIT);
169: while(i-- )
170: {
171: sd_scsi_xfer->next = sd_free_xfer[unit];
172: sd_free_xfer[unit] = sd_scsi_xfer;
173: sd_scsi_xfer++;
174: }
175: /*******************************************************\
176: * Use the subdriver to request information regarding *
177: * the drive. We cannot use interrupts yet, so the *
178: * request must specify this. *
179: \*******************************************************/
180: sd_get_parms(unit, SCSI_NOSLEEP | SCSI_NOMASK);
181: printf(" sd%d: %dMB, cyls %d, heads %d, secs %d, bytes/sec %d\n",
182: unit,
183: ( dp->cyls
184: * dp->heads
185: * dp->sectors
186: * dp->secsiz
187: )
188: / (1024 * 1024),
189: dp->cyls,
190: dp->heads,
191: dp->sectors,
192: dp->secsiz);
193: /*******************************************************\
194: * Set up the bufs for this device *
195: \*******************************************************/
196: sd->flags |= SDINIT;
197: return;
198:
199: }
200:
201:
202:
203: /*******************************************************\
204: * open the device. Make sure the partition info *
205: * is a up-to-date as can be. *
206: \*******************************************************/
207: sdopen(dev)
208: {
209: int errcode = 0;
210: int unit, part;
211: struct disk_parms disk_parms;
212: struct sd_data *sd ;
213:
214: unit = UNIT(dev);
215: part = PARTITION(dev);
216: sd = sd_data + unit;
217: if(scsi_debug & (PRINTROUTINES | TRACEOPENS))
218: printf("sdopen: dev=0x%x (unit %d (of %d),partition %d)\n"
219: , dev, unit, NSD, part);
220: /*******************************************************\
221: * Check the unit is legal *
222: \*******************************************************/
223: if ( unit >= NSD )
224: {
225: return(ENXIO);
226: }
227: /*******************************************************\
228: * Make sure the disk has been initialised *
229: * At some point in the future, get the scsi driver *
230: * to look for a new device if we are not initted *
231: \*******************************************************/
232: if (! (sd->flags & SDINIT))
233: {
234: return(ENXIO);
235: }
236:
237: /*******************************************************\
238: * If it's been invalidated, and not everybody has *
239: * closed it then forbid re-entry. *
240: \*******************************************************/
241: if ((! (sd->flags & SDVALID))
242: && ( sd->openparts))
243: return(ENXIO);
244: /*******************************************************\
245: * Check that it is still responding and ok. *
246: * "unit attention errors should occur here if the drive *
247: * has been restarted or the pack changed *
248: \*******************************************************/
249:
250: if(scsi_debug & TRACEOPENS)
251: printf("device is ");
252: if (sd_test_unit_ready(unit,0))
253: {
254: if(scsi_debug & TRACEOPENS) printf("not reponding\n");
255: return(ENXIO);
256: }
257: if(scsi_debug & TRACEOPENS)
258: printf("ok\n");
259: /*******************************************************\
260: * In case it is a funny one, tell it to start *
261: * not needed for most hard drives (ignore failure) *
262: \*******************************************************/
263: sd_start_unit(unit,SCSI_ERR_OK|SCSI_SILENT);
264: if(scsi_debug & TRACEOPENS)
265: printf("started ");
266: /*******************************************************\
267: * Load the physical device parameters *
268: \*******************************************************/
269: sd_get_parms(unit, 0); /* sets SDVALID */
270: if (sd->params.secsiz != SECSIZE)
271: {
272: printf("sd%d: Can't deal with %d bytes logical blocks\n"
273: ,unit, sd->params.secsiz);
274: Debugger();
275: return(ENXIO);
276: }
277: if(scsi_debug & TRACEOPENS)
278: printf("Params loaded ");
279: /*******************************************************\
280: * Load the partition info if not already loaded *
281: \*******************************************************/
282: sd_prevent(unit,PR_PREVENT,SCSI_ERR_OK|SCSI_SILENT); /* who cares if it fails? */
283: if((errcode = sdgetdisklabel(unit)) && (part != RAW_PART))
284: {
285: sd_prevent(unit,PR_ALLOW,SCSI_ERR_OK|SCSI_SILENT); /* who cares if it fails? */
286: return(errcode);
287: }
288: if(scsi_debug & TRACEOPENS)
289: printf("Disklabel loaded ");
290: /*******************************************************\
291: * Check the partition is legal *
292: \*******************************************************/
293: if ( part >= MAXPARTITIONS ) {
294: sd_prevent(unit,PR_ALLOW,SCSI_ERR_OK|SCSI_SILENT); /* who cares if it fails? */
295: return(ENXIO);
296: }
297: if(scsi_debug & TRACEOPENS)
298: printf("ok");
299: /*******************************************************\
300: * Check that the partition exists *
301: \*******************************************************/
302: if (( sd->disklabel.d_partitions[part].p_size == 0 )
303: && (part != RAW_PART))
304: {
305: sd_prevent(unit,PR_ALLOW,SCSI_ERR_OK|SCSI_SILENT); /* who cares if it fails? */
306: return(ENXIO);
307: }
308: sd->partflags[part] |= SDOPEN;
309: sd->openparts |= (1 << part);
310: if(scsi_debug & TRACEOPENS)
311: printf("open %d %d\n",sdstrats,sdqueues);
312: return(0);
313: }
314:
315: /*******************************************************\
316: * Get ownership of a scsi_xfer *
317: * If need be, sleep on it, until it comes free *
318: \*******************************************************/
319: struct scsi_xfer *sd_get_xs(unit,flags)
320: int flags;
321: int unit;
322: {
323: struct scsi_xfer *xs;
324: int s;
325:
326: if(flags & (SCSI_NOSLEEP | SCSI_NOMASK))
327: {
328: if (xs = sd_free_xfer[unit])
329: {
330: sd_free_xfer[unit] = xs->next;
331: xs->flags = 0;
332: }
333: }
334: else
335: {
336: s = SPLSD();
337: while (!(xs = sd_free_xfer[unit]))
338: {
339: sd_xfer_block_wait[unit]++; /* someone waiting! */
340: sleep((caddr_t)&sd_free_xfer[unit], PRIBIO+1);
341: sd_xfer_block_wait[unit]--;
342: }
343: sd_free_xfer[unit] = xs->next;
344: splx(s);
345: xs->flags = 0;
346: }
347: return(xs);
348: }
349:
350: /*******************************************************\
351: * Free a scsi_xfer, wake processes waiting for it *
352: \*******************************************************/
353: sd_free_xs(unit,xs,flags)
354: struct scsi_xfer *xs;
355: int unit;
356: int flags;
357: {
358: int s;
359:
360: if(flags & SCSI_NOMASK)
361: {
362: if (sd_xfer_block_wait[unit])
363: {
364: printf("doing a wakeup from NOMASK mode\n");
365: wakeup((caddr_t)&sd_free_xfer[unit]);
366: }
367: xs->next = sd_free_xfer[unit];
368: sd_free_xfer[unit] = xs;
369: }
370: else
371: {
372: s = SPLSD();
373: if (sd_xfer_block_wait[unit])
374: wakeup((caddr_t)&sd_free_xfer[unit]);
375: xs->next = sd_free_xfer[unit];
376: sd_free_xfer[unit] = xs;
377: splx(s);
378: }
379: }
380:
381: /*******************************************************\
382: * trim the size of the transfer if needed, *
383: * called by physio *
384: * basically the smaller of our max and the scsi driver's*
385: * minphys (note we have no max) *
386: \*******************************************************/
387: /* Trim buffer length if buffer-size is bigger than page size */
388: void sdminphys(bp)
389: struct buf *bp;
390: {
391: (*(sd_data[UNIT(bp->b_dev)].sc_sw->scsi_minphys))(bp);
392: }
393:
394: /*******************************************************\
395: * Actually translate the requested transfer into *
396: * one the physical driver can understand *
397: * The transfer is described by a buf and will include *
398: * only one physical transfer. *
399: \*******************************************************/
400:
401: int sdstrategy(bp)
402: struct buf *bp;
403: {
404: struct buf *dp;
405: unsigned int opri;
406: struct sd_data *sd ;
407: int unit;
408:
409: sdstrats++;
410: unit = UNIT((bp->b_dev));
411: sd = sd_data + unit;
412: if(scsi_debug & PRINTROUTINES) printf("\nsdstrategy ");
413: if(scsi_debug & SHOWREQUESTS) printf("sd%d: %d bytes @ blk%d\n",
414: unit,bp->b_bcount,bp->b_blkno);
415: sdminphys(bp);
416: /*******************************************************\
417: * If the device has been made invalid, error out *
418: \*******************************************************/
419: if(!(sd->flags & SDVALID))
420: {
421: bp->b_error = EIO;
422: goto bad;
423: }
424: /*******************************************************\
425: * "soft" write protect check *
426: \*******************************************************/
427: if ((sd->flags & SDWRITEPROT) && (bp->b_flags & B_READ) == 0) {
428: bp->b_error = EROFS;
429: goto bad;
430: }
431: /*******************************************************\
432: * If it's a null transfer, return immediatly *
433: \*******************************************************/
434: if (bp->b_bcount == 0)
435: {
436: goto done;
437: }
438:
439: /*******************************************************\
440: * Decide which unit and partition we are talking about *
441: * only raw is ok if no label *
442: \*******************************************************/
443: if(PARTITION(bp->b_dev) != RAW_PART)
444: {
445: if (!(sd->flags & SDHAVELABEL))
446: {
447: bp->b_error = EIO;
448: goto bad;
449: }
450:
451: /*
452: * do bounds checking, adjust transfer. if error, process.
453: * if end of partition, just return
454: */
455: if (bounds_check_with_label(bp,&sd->disklabel,sd->wlabel) <= 0)
456: goto done;
457: /* otherwise, process transfer request */
458: }
459:
460: opri = SPLSD();
461: dp = &sd_buf_queue[unit];
462:
463: /*******************************************************\
464: * Place it in the queue of disk activities for this disk*
465: \*******************************************************/
466: disksort(dp, bp);
467:
468: /*******************************************************\
469: * Tell the device to get going on the transfer if it's *
470: * not doing anything, otherwise just wait for completion*
471: \*******************************************************/
472: sdstart(unit);
473:
474: splx(opri);
475: return;
476: bad:
477: bp->b_flags |= B_ERROR;
478: done:
479:
480: /*******************************************************\
481: * Correctly set the buf to indicate a completed xfer *
482: \*******************************************************/
483: bp->b_resid = bp->b_bcount;
484: biodone(bp);
485: return;
486: }
487:
488: /***************************************************************\
489: * sdstart looks to see if there is a buf waiting for the device *
490: * and that the device is not already busy. If both are true, *
491: * It deques the buf and creates a scsi command to perform the *
492: * transfer in the buf. The transfer request will call sd_done *
493: * on completion, which will in turn call this routine again *
494: * so that the next queued transfer is performed. *
495: * The bufs are queued by the strategy routine (sdstrategy) *
496: * *
497: * This routine is also called after other non-queued requests *
498: * have been made of the scsi driver, to ensure that the queue *
499: * continues to be drained. *
500: * *
501: * must be called at the correct (highish) spl level *
502: \***************************************************************/
503: /* sdstart() is called at SPLSD from sdstrategy and sd_done*/
504: sdstart(unit)
505: int unit;
506: {
507: int drivecount;
508: register struct buf *bp = 0;
509: register struct buf *dp;
510: struct scsi_xfer *xs;
511: struct scsi_rw_big cmd;
512: int blkno, nblk;
513: struct sd_data *sd = sd_data + unit;
514: struct partition *p ;
515:
516: if(scsi_debug & PRINTROUTINES) printf("sdstart%d ",unit);
517: /*******************************************************\
518: * See if there is a buf to do and we are not already *
519: * doing one *
520: \*******************************************************/
521: if(!sd_free_xfer[unit])
522: {
523: return; /* none for us, unit already underway */
524: }
525:
526: if(sd_xfer_block_wait[unit]) /* there is one, but a special waits */
527: {
528: return; /* give the special that's waiting a chance to run */
529: }
530:
531:
532: dp = &sd_buf_queue[unit];
533: if ((bp = dp->b_actf) != NULL) /* yes, an assign */
534: {
535: dp->b_actf = bp->av_forw;
536: }
537: else
538: {
539: return;
540: }
541:
542: xs=sd_get_xs(unit,0); /* ok we can grab it */
543: xs->flags = INUSE; /* Now ours */
544: /*******************************************************\
545: * If the device has become invalid, abort all the *
546: * reads and writes until all files have been closed and *
547: * re-openned *
548: \*******************************************************/
549: if(!(sd->flags & SDVALID))
550: {
551: xs->error = XS_DRIVER_STUFFUP;
552: sd_done(unit,xs); /* clean up (calls sdstart) */
553: return ;
554: }
555: /*******************************************************\
556: * We have a buf, now we should move the data into *
557: * a scsi_xfer definition and try start it *
558: \*******************************************************/
559: /*******************************************************\
560: * First, translate the block to absolute *
561: \*******************************************************/
562: p = sd->disklabel.d_partitions + PARTITION(bp->b_dev);
563: blkno = bp->b_blkno + p->p_offset;
564: nblk = (bp->b_bcount + 511) >> 9;
565:
566: /*******************************************************\
567: * Fill out the scsi command *
568: \*******************************************************/
569: bzero(&cmd, sizeof(cmd));
570: cmd.op_code = (bp->b_flags & B_READ)
571: ? READ_BIG : WRITE_BIG;
572: cmd.addr_3 = (blkno & 0xff000000) >> 24;
573: cmd.addr_2 = (blkno & 0xff0000) >> 16;
574: cmd.addr_1 = (blkno & 0xff00) >> 8;
575: cmd.addr_0 = blkno & 0xff;
576: cmd.length2 = (nblk & 0xff00) >> 8;
577: cmd.length1 = (nblk & 0xff);
578: /*******************************************************\
579: * Fill out the scsi_xfer structure *
580: * Note: we cannot sleep as we may be an interrupt *
581: \*******************************************************/
582: xs->flags |= SCSI_NOSLEEP;
583: xs->adapter = sd->ctlr;
584: xs->targ = sd->targ;
585: xs->lu = sd->lu;
586: xs->retries = SD_RETRIES;
587: xs->timeout = 10000;/* 10000 millisecs for a disk !*/
588: xs->cmd = (struct scsi_generic *)&cmd;
589: xs->cmdlen = sizeof(cmd);
590: xs->resid = bp->b_bcount;
591: xs->when_done = sd_done;
592: xs->done_arg = unit;
593: xs->done_arg2 = (int)xs;
594: xs->error = XS_NOERROR;
595: xs->bp = bp;
596: xs->data = (u_char *)bp->b_un.b_addr;
597: xs->datalen = bp->b_bcount;
598: /*******************************************************\
599: * Pass all this info to the scsi driver. *
600: \*******************************************************/
601:
602:
603:
604: if ( (*(sd->sc_sw->scsi_cmd))(xs) != SUCCESSFULLY_QUEUED)
605: {
606: printf("sd%d: oops not queued",unit);
607: xs->error = XS_DRIVER_STUFFUP;
608: sd_done(unit,xs); /* clean up (calls sdstart) */
609: }
610: sdqueues++;
611: }
612:
613: /*******************************************************\
614: * This routine is called by the scsi interrupt when *
615: * the transfer is complete.
616: \*******************************************************/
617: int sd_done(unit,xs)
618: int unit;
619: struct scsi_xfer *xs;
620: {
621: struct buf *bp;
622: int retval;
623: int retries = 0;
624:
625: if(scsi_debug & PRINTROUTINES) printf("sd_done%d ",unit);
626: if (! (xs->flags & INUSE))
627: panic("scsi_xfer not in use!");
628: if(bp = xs->bp)
629: {
630: switch(xs->error)
631: {
632: case XS_NOERROR:
633: bp->b_error = 0;
634: bp->b_resid = 0;
635: break;
636:
637: case XS_SENSE:
638: retval = (sd_interpret_sense(unit,xs));
639: if(retval)
640: {
641: bp->b_flags |= B_ERROR;
642: bp->b_error = retval;
643: }
644: break;
645:
646: case XS_TIMEOUT:
647: printf("sd%d timeout\n",unit);
648:
649: case XS_BUSY: /* should retry */ /* how? */
650: /************************************************/
651: /* SHOULD put buf back at head of queue */
652: /* and decrement retry count in (*xs) */
653: /* HOWEVER, this should work as a kludge */
654: /************************************************/
655: if(xs->retries--)
656: {
657: xs->error = XS_NOERROR;
658: xs->flags &= ~ITSDONE;
659: if ( (*(sd_data[unit].sc_sw->scsi_cmd))(xs)
660: == SUCCESSFULLY_QUEUED)
661: { /* don't wake the job, ok? */
662: return;
663: }
664: xs->flags |= ITSDONE;
665: } /* fall through */
666:
667: case XS_DRIVER_STUFFUP:
668: bp->b_flags |= B_ERROR;
669: bp->b_error = EIO;
670: break;
671: default:
672: printf("sd%d: unknown error category from scsi driver\n"
673: ,unit);
674: }
675: biodone(bp);
676: sd_free_xs(unit,xs,0);
677: sdstart(unit); /* If there's anything waiting.. do it */
678: }
679: else /* special has finished */
680: {
681: wakeup(xs);
682: }
683: }
684: /*******************************************************\
685: * Perform special action on behalf of the user *
686: * Knows about the internals of this device *
687: \*******************************************************/
688: sdioctl(dev_t dev, int cmd, caddr_t addr, int flag)
689: {
690: /* struct sd_cmd_buf *args;*/
691: int error = 0;
692: unsigned int opri;
693: unsigned char unit, part;
694: register struct sd_data *sd;
695:
696:
697: /*******************************************************\
698: * Find the device that the user is talking about *
699: \*******************************************************/
700: unit = UNIT(dev);
701: part = PARTITION(dev);
702: sd = &sd_data[unit];
703: if(scsi_debug & PRINTROUTINES) printf("sdioctl%d ",unit);
704:
705: /*******************************************************\
706: * If the device is not valid.. abandon ship *
707: \*******************************************************/
708: if (!(sd_data[unit].flags & SDVALID))
709: return(EIO);
710: switch(cmd)
711: {
712:
713: case DIOCSBAD:
714: error = EINVAL;
715: break;
716:
717: case DIOCGDINFO:
718: *(struct disklabel *)addr = sd->disklabel;
719: break;
720:
721: case DIOCGPART:
722: ((struct partinfo *)addr)->disklab = &sd->disklabel;
723: ((struct partinfo *)addr)->part =
724: &sd->disklabel.d_partitions[PARTITION(dev)];
725: break;
726:
727: case DIOCSDINFO:
728: if ((flag & FWRITE) == 0)
729: error = EBADF;
730: else
731: error = setdisklabel(&sd->disklabel,
732: (struct disklabel *)addr,
733: /*(sd->flags & DKFL_BSDLABEL) ? sd->openparts : */0,
734: sd->dosparts);
735: if (error == 0) {
736: sd->flags |= SDHAVELABEL;
737: }
738: break;
739:
740: case DIOCWLABEL:
741: sd->flags &= ~SDWRITEPROT;
742: if ((flag & FWRITE) == 0)
743: error = EBADF;
744: else
745: sd->wlabel = *(int *)addr;
746: break;
747:
748: case DIOCWDINFO:
749: sd->flags &= ~SDWRITEPROT;
750: if ((flag & FWRITE) == 0)
751: error = EBADF;
752: else
753: {
754: if ((error = setdisklabel(&sd->disklabel
755: , (struct disklabel *)addr
756: , /*(sd->flags & SDHAVELABEL) ? sd->openparts :*/ 0
757: , sd->dosparts)) == 0)
758: {
759: int wlab;
760:
761: sd->flags |= SDHAVELABEL; /* ok write will succeed */
762:
763: /* simulate opening partition 0 so write succeeds */
764: sd->openparts |= (1 << 0); /* XXX */
765: wlab = sd->wlabel;
766: sd->wlabel = 1;
767: error = writedisklabel(dev, sdstrategy,
768: &sd->disklabel, sd->dosparts);
769: sd->wlabel = wlab;
770: }
771: }
772: break;
773:
774:
775: default:
776: error = ENOTTY;
777: break;
778: }
779: return (error);
780: }
781:
782:
783: /*******************************************************\
784: * Load the label information on the named device *
785: \*******************************************************/
786: int sdgetdisklabel(unit)
787: unsigned char unit;
788: {
789: /*unsigned int n, m;*/
790: char *errstring;
791: struct dos_partition *dos_partition_p;
792: struct sd_data *sd = sd_data + unit;
793:
794: /*******************************************************\
795: * If the inflo is already loaded, use it *
796: \*******************************************************/
797: if(sd->flags & SDHAVELABEL) return(ESUCCESS);
798:
799: bzero(&sd->disklabel,sizeof(struct disklabel));
800: /*******************************************************\
801: * make partition 3 the whole disk in case of failure *
802: * then get pdinfo *
803: \*******************************************************/
804: sd->disklabel.d_partitions[0].p_offset = 0;
805: sd->disklabel.d_partitions[0].p_size = sd->params.disksize;
806: sd->disklabel.d_partitions[RAW_PART].p_offset = 0;
807: sd->disklabel.d_partitions[RAW_PART].p_size = sd->params.disksize;
808: sd->disklabel.d_npartitions = MAXPARTITIONS;
809: sd->disklabel.d_secsize = 512; /* as long as it's not 0 */
810: sd->disklabel.d_ntracks = sd->params.heads;
811: sd->disklabel.d_nsectors = sd->params.sectors;
812: sd->disklabel.d_ncylinders = sd->params.cyls;
813: sd->disklabel.d_secpercyl = sd->params.heads * sd->params.sectors;
814: if (sd->disklabel.d_secpercyl == 0)
815: {
816: sd->disklabel.d_secpercyl = 100;
817: /* as long as it's not 0 */
818: /* readdisklabel divides by it */
819: }
820:
821: /*******************************************************\
822: * all the generic bisklabel extraction routine *
823: \*******************************************************/
824: if(errstring = readdisklabel(makedev(0 ,(unit<<UNITSHIFT )+3)
825: , sdstrategy
826: , &sd->disklabel
827: , sd->dosparts
828: , 0
829: , 0))
830: {
831: printf("sd%d: %s\n",unit, errstring);
832: return(ENXIO);
833: }
834: /*******************************************************\
835: * leave partition 2 "open" for raw I/O *
836: \*******************************************************/
837:
838: sd->flags |= SDHAVELABEL; /* WE HAVE IT ALL NOW */
839: return(ESUCCESS);
840: }
841:
842: /*******************************************************\
843: * Find out from the device what it's capacity is *
844: \*******************************************************/
845: sd_size(unit, flags)
846: {
847: struct scsi_read_cap_data rdcap;
848: struct scsi_read_capacity scsi_cmd;
849: int size;
850:
851: /*******************************************************\
852: * make up a scsi command and ask the scsi driver to do *
853: * it for you. *
854: \*******************************************************/
855: bzero(&scsi_cmd, sizeof(scsi_cmd));
856: scsi_cmd.op_code = READ_CAPACITY;
857:
858: /*******************************************************\
859: * If the command works, interpret the result as a 4 byte*
860: * number of blocks *
861: \*******************************************************/
862: if (sd_scsi_cmd(unit,
863: &scsi_cmd,
864: sizeof(scsi_cmd),
865: &rdcap,
866: sizeof(rdcap),
867: 2000,
868: flags) != 0)
869: {
870: printf("could not get size of unit %d\n", unit);
871: return(0);
872: } else {
873: size = rdcap.addr_0 + 1 ;
874: size += rdcap.addr_1 << 8;
875: size += rdcap.addr_2 << 16;
876: size += rdcap.addr_3 << 24;
877: }
878: return(size);
879: }
880:
881: /*******************************************************\
882: * Get scsi driver to send a "are you ready?" command *
883: \*******************************************************/
884: sd_test_unit_ready(unit,flags)
885: int unit,flags;
886: {
887: struct scsi_test_unit_ready scsi_cmd;
888:
889: bzero(&scsi_cmd, sizeof(scsi_cmd));
890: scsi_cmd.op_code = TEST_UNIT_READY;
891:
892: return (sd_scsi_cmd(unit,
893: &scsi_cmd,
894: sizeof(scsi_cmd),
895: 0,
896: 0,
897: 100000,
898: flags));
899: }
900:
901: /*******************************************************\
902: * Prevent or allow the user to remove the tape *
903: \*******************************************************/
904: sd_prevent(unit,type,flags)
905: int unit,type,flags;
906: {
907: struct scsi_prevent scsi_cmd;
908:
909: bzero(&scsi_cmd, sizeof(scsi_cmd));
910: scsi_cmd.op_code = PREVENT_ALLOW;
911: scsi_cmd.prevent=type;
912: return (sd_scsi_cmd(unit,
913: &scsi_cmd,
914: sizeof(scsi_cmd),
915: 0,
916: 0,
917: 5000,
918: flags) );
919: }
920: /*******************************************************\
921: * Get scsi driver to send a "start up" command *
922: \*******************************************************/
923: sd_start_unit(unit,flags)
924: int unit,flags;
925: {
926: struct scsi_start_stop scsi_cmd;
927:
928: bzero(&scsi_cmd, sizeof(scsi_cmd));
929: scsi_cmd.op_code = START_STOP;
930: scsi_cmd.start = 1;
931:
932: return (sd_scsi_cmd(unit,
933: &scsi_cmd,
934: sizeof(scsi_cmd),
935: 0,
936: 0,
937: 2000,
938: flags));
939: }
940:
941: /*******************************************************\
942: * Tell the device to map out a defective block *
943: \*******************************************************/
944: sd_reassign_blocks(unit,block)
945: {
946: struct scsi_reassign_blocks scsi_cmd;
947: struct scsi_reassign_blocks_data rbdata;
948:
949:
950: bzero(&scsi_cmd, sizeof(scsi_cmd));
951: bzero(&rbdata, sizeof(rbdata));
952: scsi_cmd.op_code = REASSIGN_BLOCKS;
953:
954: rbdata.length_msb = 0;
955: rbdata.length_lsb = sizeof(rbdata.defect_descriptor[0]);
956: rbdata.defect_descriptor[0].dlbaddr_3 = ((block >> 24) & 0xff);
957: rbdata.defect_descriptor[0].dlbaddr_2 = ((block >> 16) & 0xff);
958: rbdata.defect_descriptor[0].dlbaddr_1 = ((block >> 8) & 0xff);
959: rbdata.defect_descriptor[0].dlbaddr_0 = ((block ) & 0xff);
960:
961: return(sd_scsi_cmd(unit,
962: &scsi_cmd,
963: sizeof(scsi_cmd),
964: &rbdata,
965: sizeof(rbdata),
966: 5000,
967: 0));
968: }
969:
970: #define b2tol(a) (((unsigned)(a##_1) << 8) + (unsigned)a##_0 )
971:
972: /*******************************************************\
973: * Get the scsi driver to send a full inquiry to the *
974: * device and use the results to fill out the disk *
975: * parameter structure. *
976: \*******************************************************/
977:
978: int sd_get_parms(unit, flags)
979: {
980: struct sd_data *sd = sd_data + unit;
981: struct disk_parms *disk_parms = &sd->params;
982: struct scsi_mode_sense scsi_cmd;
983: struct scsi_mode_sense_data
984: {
985: struct scsi_mode_header header;
986: struct blk_desc blk_desc;
987: union disk_pages pages;
988: }scsi_sense;
989: int sectors;
990:
991: /*******************************************************\
992: * First check if we have it all loaded *
993: \*******************************************************/
994: if(sd->flags & SDVALID) return(0);
995: /*******************************************************\
996: * First do a mode sense page 3 *
997: \*******************************************************/
998: if (sd_debug)
999: {
1000: bzero(&scsi_cmd, sizeof(scsi_cmd));
1001: scsi_cmd.op_code = MODE_SENSE;
1002: scsi_cmd.page_code = 3;
1003: scsi_cmd.length = 0x24;
1004: /*******************************************************\
1005: * do the command, but we don't need the results *
1006: * just print them for our interest's sake *
1007: \*******************************************************/
1008: if (sd_scsi_cmd(unit,
1009: &scsi_cmd,
1010: sizeof(scsi_cmd),
1011: &scsi_sense,
1012: sizeof(scsi_sense),
1013: 2000,
1014: flags) != 0)
1015: {
1016: printf("could not mode sense (3) for unit %d\n", unit);
1017: return(ENXIO);
1018: }
1019: printf("unit %d: %d trk/zone, %d alt_sec/zone, %d alt_trk/zone, %d alt_trk/lun\n",
1020: unit,
1021: b2tol(scsi_sense.pages.disk_format.trk_z),
1022: b2tol(scsi_sense.pages.disk_format.alt_sec),
1023: b2tol(scsi_sense.pages.disk_format.alt_trk_z),
1024: b2tol(scsi_sense.pages.disk_format.alt_trk_v));
1025: printf(" %d sec/trk, %d bytes/sec, %d interleave, %d %d bytes/log_blk\n",
1026: b2tol(scsi_sense.pages.disk_format.ph_sec_t),
1027: b2tol(scsi_sense.pages.disk_format.bytes_s),
1028: b2tol(scsi_sense.pages.disk_format.interleave),
1029: sd_size(unit, flags),
1030: _3btol(scsi_sense.blk_desc.blklen));
1031: }
1032:
1033:
1034: /*******************************************************\
1035: * do a "mode sense page 4" *
1036: \*******************************************************/
1037: bzero(&scsi_cmd, sizeof(scsi_cmd));
1038: scsi_cmd.op_code = MODE_SENSE;
1039: scsi_cmd.page_code = 4;
1040: scsi_cmd.length = 0x20;
1041: /*******************************************************\
1042: * If the command worked, use the results to fill out *
1043: * the parameter structure *
1044: \*******************************************************/
1045: if (sd_scsi_cmd(unit,
1046: &scsi_cmd,
1047: sizeof(scsi_cmd),
1048: &scsi_sense,
1049: sizeof(scsi_sense),
1050: 2000,
1051: flags) != 0)
1052: {
1053: printf("could not mode sense (4) for unit %d\n", unit);
1054: printf(" using ficticious geometry\n");
1055: /* use adaptec standard ficticious geometry */
1056: sectors = sd_size(unit, flags);
1057: disk_parms->heads = 64;
1058: disk_parms->sectors = 32;
1059: disk_parms->cyls = sectors/(64 * 32);
1060: disk_parms->secsiz = SECSIZE;
1061: }
1062: else
1063: {
1064:
1065: if (sd_debug)
1066: {
1067: printf(" %d cyls, %d heads, %d precomp, %d red_write, %d land_zone\n",
1068: _3btol(&scsi_sense.pages.rigid_geometry.ncyl_2),
1069: scsi_sense.pages.rigid_geometry.nheads,
1070: b2tol(scsi_sense.pages.rigid_geometry.st_cyl_wp),
1071: b2tol(scsi_sense.pages.rigid_geometry.st_cyl_rwc),
1072: b2tol(scsi_sense.pages.rigid_geometry.land_zone));
1073: }
1074:
1075: /*******************************************************\
1076: * KLUDGE!!(for zone recorded disks) *
1077: * give a number of sectors so that sec * trks * cyls *
1078: * is <= disk_size *
1079: \*******************************************************/
1080: disk_parms->heads = scsi_sense.pages.rigid_geometry.nheads;
1081: disk_parms->cyls = _3btol(&scsi_sense.pages.rigid_geometry.ncyl_2);
1082: disk_parms->secsiz = _3btol(&scsi_sense.blk_desc.blklen);
1083:
1084: sectors = sd_size(unit, flags);
1085: sectors /= disk_parms->cyls;
1086: sectors /= disk_parms->heads;
1087: disk_parms->sectors = sectors; /* dubious on SCSI*/
1088: }
1089:
1090: sd->flags |= SDVALID;
1091: return(0);
1092: }
1093:
1094: /*******************************************************\
1095: * close the device.. only called if we are the LAST *
1096: * occurence of an open device *
1097: \*******************************************************/
1098: sdclose(dev)
1099: dev_t dev;
1100: {
1101: unsigned char unit, part;
1102: unsigned int old_priority;
1103:
1104: unit = UNIT(dev);
1105: part = PARTITION(dev);
1106: sd_data[unit].partflags[part] &= ~SDOPEN;
1107: sd_data[unit].openparts &= ~(1 << part);
1108: if(sd_data[unit].openparts == 0) /* if all partitions closed */
1109: {
1110: sd_prevent(unit,PR_ALLOW,SCSI_SILENT|SCSI_ERR_OK);
1111: }
1112: return(0);
1113: }
1114:
1115: /*******************************************************\
1116: * ask the scsi driver to perform a command for us. *
1117: * Call it through the switch table, and tell it which *
1118: * sub-unit we want, and what target and lu we wish to *
1119: * talk to. Also tell it where to find the command *
1120: * how long int is. *
1121: * Also tell it where to read/write the data, and how *
1122: * long the data is supposed to be *
1123: \*******************************************************/
1124: int sd_scsi_cmd(unit,scsi_cmd,cmdlen,data_addr,datalen,timeout,flags)
1125:
1126: int unit,flags;
1127: struct scsi_generic *scsi_cmd;
1128: int cmdlen;
1129: int timeout;
1130: u_char *data_addr;
1131: int datalen;
1132: {
1133: struct scsi_xfer *xs;
1134: int retval;
1135: int s;
1136: struct sd_data *sd = sd_data + unit;
1137:
1138: if(scsi_debug & PRINTROUTINES) printf("\nsd_scsi_cmd%d ",unit);
1139: if(sd->sc_sw) /* If we have a scsi driver */
1140: {
1141: xs = sd_get_xs(unit,flags); /* should wait unless booting */
1142: if(!xs)
1143: {
1144: printf("sd_scsi_cmd%d: controller busy"
1145: " (this should never happen)\n",unit);
1146: return(EBUSY);
1147: }
1148: xs->flags |= INUSE;
1149: /*******************************************************\
1150: * Fill out the scsi_xfer structure *
1151: \*******************************************************/
1152: xs->flags |= flags;
1153: xs->adapter = sd->ctlr;
1154: xs->targ = sd->targ;
1155: xs->lu = sd->lu;
1156: xs->retries = SD_RETRIES;
1157: xs->timeout = timeout;
1158: xs->cmd = scsi_cmd;
1159: xs->cmdlen = cmdlen;
1160: xs->data = data_addr;
1161: xs->datalen = datalen;
1162: xs->resid = datalen;
1163: xs->when_done = (flags & SCSI_NOMASK)
1164: ?(int (*)())0
1165: :sd_done;
1166: xs->done_arg = unit;
1167: xs->done_arg2 = (int)xs;
1168: retry: xs->error = XS_NOERROR;
1169: xs->bp = 0;
1170: retval = (*(sd->sc_sw->scsi_cmd))(xs);
1171: switch(retval)
1172: {
1173: case SUCCESSFULLY_QUEUED:
1174: s = splbio();
1175: while(!(xs->flags & ITSDONE))
1176: sleep(xs,PRIBIO+1);
1177: splx(s);
1178:
1179: case HAD_ERROR:
1180: /*printf("err = %d ",xs->error);*/
1181: switch(xs->error)
1182: {
1183: case XS_NOERROR:
1184: retval = ESUCCESS;
1185: break;
1186: case XS_SENSE:
1187: retval = (sd_interpret_sense(unit,xs));
1188: break;
1189: case XS_DRIVER_STUFFUP:
1190: retval = EIO;
1191: break;
1192: case XS_TIMEOUT:
1193: if(xs->retries-- )
1194: {
1195: xs->flags &= ~ITSDONE;
1196: goto retry;
1197: }
1198: retval = EIO;
1199: break;
1200: case XS_BUSY:
1201: if(xs->retries-- )
1202: {
1203: xs->flags &= ~ITSDONE;
1204: goto retry;
1205: }
1206: retval = EIO;
1207: break;
1208: default:
1209: retval = EIO;
1210: printf("sd%d: unknown error category from scsi driver\n"
1211: ,unit);
1212: }
1213: break;
1214: case COMPLETE:
1215: retval = ESUCCESS;
1216: break;
1217: case TRY_AGAIN_LATER:
1218: if(xs->retries-- )
1219: {
1220: xs->flags &= ~ITSDONE;
1221: goto retry;
1222: }
1223: retval = EIO;
1224: break;
1225: default:
1226: retval = EIO;
1227: }
1228: sd_free_xs(unit,xs,flags);
1229: sdstart(unit); /* check if anything is waiting fr the xs */
1230: }
1231: else
1232: {
1233: printf("sd%d: not set up\n",unit);
1234: return(EINVAL);
1235: }
1236: return(retval);
1237: }
1238: /***************************************************************\
1239: * Look at the returned sense and act on the error and detirmine *
1240: * The unix error number to pass back... (0 = report no error) *
1241: \***************************************************************/
1242:
1243: int sd_interpret_sense(unit,xs)
1244: int unit;
1245: struct scsi_xfer *xs;
1246: {
1247: struct scsi_sense_data *sense;
1248: int key;
1249: int silent;
1250:
1251: /***************************************************************\
1252: * If the flags say errs are ok, then always return ok. *
1253: \***************************************************************/
1254: if (xs->flags & SCSI_ERR_OK) return(ESUCCESS);
1255: silent = (xs->flags & SCSI_SILENT);
1256:
1257: sense = &(xs->sense);
1258: switch(sense->error_class)
1259: {
1260: case 7:
1261: {
1262: key=sense->ext.extended.sense_key;
1263: switch(key)
1264: {
1265: case 0x0:
1266: return(ESUCCESS);
1267: case 0x1:
1268: if(!silent)
1269: {
1270: printf("sd%d: soft error(corrected) ", unit);
1271: if(sense->valid)
1272: {
1273: printf("block no. %d (decimal)",
1274: (sense->ext.extended.info[0] <<24),
1275: (sense->ext.extended.info[1] <<16),
1276: (sense->ext.extended.info[2] <<8),
1277: (sense->ext.extended.info[3] ));
1278: }
1279: printf("\n");
1280: }
1281: return(ESUCCESS);
1282: case 0x2:
1283: if(!silent)printf("sd%d: not ready\n ",
1284: unit);
1285: return(ENODEV);
1286: case 0x3:
1287: if(!silent)
1288: {
1289: printf("sd%d: medium error ", unit);
1290: if(sense->valid)
1291: {
1292: printf("block no. %d (decimal)",
1293: (sense->ext.extended.info[0] <<24),
1294: (sense->ext.extended.info[1] <<16),
1295: (sense->ext.extended.info[2] <<8),
1296: (sense->ext.extended.info[3] ));
1297: }
1298: printf("\n");
1299: }
1300: return(EIO);
1301: case 0x4:
1302: if(!silent)printf("sd%d: non-media hardware failure\n ",
1303: unit);
1304: return(EIO);
1305: case 0x5:
1306: if(!silent)printf("sd%d: illegal request\n ",
1307: unit);
1308: return(EINVAL);
1309: case 0x6:
1310: /***********************************************\
1311: * If we are not open, then this is not an error *
1312: * as we don't have state yet. Either way, make *
1313: * sure that we don't have any residual state *
1314: \***********************************************/
1315: if(!silent)printf("sd%d: Unit attention.\n ", unit);
1316: sd_data[unit].flags &= ~(SDVALID | SDHAVELABEL);
1317: if (sd_data[unit].openparts)
1318: {
1319: return(EIO);
1320: }
1321: return(ESUCCESS); /* not an error if nothing's open */
1322: case 0x7:
1323: if(!silent)
1324: {
1325: printf("sd%d: attempted protection violation ",
1326: unit);
1327: if(sense->valid)
1328: {
1329: printf("block no. %d (decimal)\n",
1330: (sense->ext.extended.info[0] <<24),
1331: (sense->ext.extended.info[1] <<16),
1332: (sense->ext.extended.info[2] <<8),
1333: (sense->ext.extended.info[3] ));
1334: }
1335: printf("\n");
1336: }
1337: return(EACCES);
1338: case 0x8:
1339: if(!silent)
1340: {
1341: printf("sd%d: block wrong state (worm)\n ",
1342: unit);
1343: if(sense->valid)
1344: {
1345: printf("block no. %d (decimal)\n",
1346: (sense->ext.extended.info[0] <<24),
1347: (sense->ext.extended.info[1] <<16),
1348: (sense->ext.extended.info[2] <<8),
1349: (sense->ext.extended.info[3] ));
1350: }
1351: printf("\n");
1352: }
1353: return(EIO);
1354: case 0x9:
1355: if(!silent)printf("sd%d: vendor unique\n",
1356: unit);
1357: return(EIO);
1358: case 0xa:
1359: if(!silent)printf("sd%d: copy aborted\n ",
1360: unit);
1361: return(EIO);
1362: case 0xb:
1363: if(!silent)printf("sd%d: command aborted\n ",
1364: unit);
1365: return(EIO);
1366: case 0xc:
1367: if(!silent)
1368: {
1369: printf("sd%d: search returned\n ",
1370: unit);
1371: if(sense->valid)
1372: {
1373: printf("block no. %d (decimal)\n",
1374: (sense->ext.extended.info[0] <<24),
1375: (sense->ext.extended.info[1] <<16),
1376: (sense->ext.extended.info[2] <<8),
1377: (sense->ext.extended.info[3] ));
1378: }
1379: printf("\n");
1380: }
1381: return(ESUCCESS);
1382: case 0xd:
1383: if(!silent)printf("sd%d: volume overflow\n ",
1384: unit);
1385: return(ENOSPC);
1386: case 0xe:
1387: if(!silent)
1388: {
1389: printf("sd%d: verify miscompare\n ",
1390: unit);
1391: if(sense->valid)
1392: {
1393: printf("block no. %d (decimal)\n",
1394: (sense->ext.extended.info[0] <<24),
1395: (sense->ext.extended.info[1] <<16),
1396: (sense->ext.extended.info[2] <<8),
1397: (sense->ext.extended.info[3] ));
1398: }
1399: printf("\n");
1400: }
1401: return(EIO);
1402: case 0xf:
1403: if(!silent)printf("sd%d: unknown error key\n ",
1404: unit);
1405: return(EIO);
1406: }
1407: break;
1408: }
1409: case 0:
1410: case 1:
1411: case 2:
1412: case 3:
1413: case 4:
1414: case 5:
1415: case 6:
1416: {
1417: if(!silent)printf("sd%d: error class %d code %d\n",
1418: unit,
1419: sense->error_class,
1420: sense->error_code);
1421: if(sense->valid)
1422: if(!silent)printf("block no. %d (decimal)\n",
1423: (sense->ext.unextended.blockhi <<16),
1424: + (sense->ext.unextended.blockmed <<8),
1425: + (sense->ext.unextended.blocklow ));
1426: }
1427: return(EIO);
1428: }
1429: }
1430:
1431:
1432:
1433:
1434: int
1435: sdsize(dev_t dev)
1436: {
1437: int unit = UNIT(dev), part = PARTITION(dev), val;
1438: struct sd_data *sd;
1439:
1440: if (unit >= NSD)
1441: return(-1);
1442:
1443: sd = &sd_data[unit];
1444: if((sd->flags & SDINIT) == 0) return(-1);
1445: if (sd == 0 || (sd->flags & SDHAVELABEL) == 0)
1446: val = sdopen (MAKESDDEV(major(dev), unit, RAW_PART), FREAD, S_IFBLK, 0);
1447: if ( val != 0 || sd->flags & SDWRITEPROT)
1448: return (-1);
1449:
1450: return((int)sd->disklabel.d_partitions[part].p_size);
1451: }
1452:
1453: sddump()
1454: {
1455: printf("sddump() -- not implemented\n");
1456: return(-1);
1457: }
1458:
1459:
1460:
1461:
1462:
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