1995/0405/port/devsd.c (diff list | history)

1995/0404/sys/src/9/port/devsd.c:100,107 – 1995/0405/sys/src/9/port/devsd.c:100,106 (short | long | prev | next)
1994/0913		sdinit(void) { Disk *d; ulong s, b;
1995/0329		uchar inq[255];
1995/0405		uchar scratch[0xFF], type;
1995/0329		int dev, i, nbytes;
1994/0913		dev = 0;
1995/0404/sys/src/9/port/devsd.c:111,126 – 1995/0405/sys/src/9/port/devsd.c:110,120
1994/0913		if(dev < 0) break;
1995/0404		if(scsitest(d->t, 0) < 0) scsireqsense(d->t, 0, 0); if(scsistart(d->t, 0, 1) < 0) scsireqsense(d->t, 0, 0); print("sd1|");
1994/0913		/* Search for other lun's */
1995/0405		/* * Search for all the lun's. */
1994/0913		for(i = 0; i < Nlun; i++) { d->lun = i;
1995/0404		print("sd2|");
1995/0329		/* * A SCSI target does not support a lun if the
1995/0404/sys/src/9/port/devsd.c:127,154 – 1995/0405/sys/src/9/port/devsd.c:121,158
1995/0329		* the peripheral device type and qualifier fields * in the response to an inquiry command are 0x7F. */ memset(inq, 0, sizeof(inq)); nbytes = sizeof(inq); if(scsiinquiry(d->t, d->lun, inq, &nbytes) != STok || inq[0] == 0x7F)
1995/0405		nbytes = sizeof(scratch); memset(scratch, 0, nbytes); if(scsiinquiry(d->t, d->lun, scratch, &nbytes) != STok)
1995/0329		continue;
1995/0404		print("sd3|");
1994/0913		s = 0; b = 0; if(scsicap(d->t, d->lun, &s, &b) != STok) {
1995/0404		scsireqsense(d->t, 0, 0);
1995/0405		if(scratch[0] == 0x7F)
1994/0913		continue;
1995/0405		type = scratch[0] & 0x1F; /* * Read-capacity is mandatory for TypeDA, TypeMO and TypeCD. * It may return 'not ready' if TypeDA is not spun up, * TypeMO or TypeCD are not loaded or just plain slow getting * their act together after a reset. * If 'not ready' comes back, try starting a TypeDA and punt * the get capacity until the drive is attached. * It might be possible to be smarter here, and look at the * response from a test-unit-ready which would show if the * target was in the process of becoming ready. */ if(scsicap(d->t, d->lun, &d->size, &d->bsize) != STok) { nbytes = sizeof(scratch); memset(scratch, 0, nbytes); scsireqsense(d->t, 0, scratch, &nbytes, 1); if((scratch[2] & 0x0F) != 0x02) continue; if(type == TypeDA) scsistart(d->t, d->lun, 0); d->size = d->bsize = 0;
1994/0913		}
1995/0404		print("sd4/%d/%d|", s, b);
1994/0913		if(s == 0 || b == 0) continue;
1995/0404		print("sd5/0x%2.2ux|", d->inquire[0]);
1995/0405		switch(type){
1994/0913		d->size = s; d->bsize = b;
1995/0403		switch(d->inquire[0] & 0x1F){
1994/0913
1995/0403		case TypeDA: case TypeMO: sprint(d->vol, "sd%d", ndisk);
1995/0404/sys/src/9/port/devsd.c:161,167 – 1995/0405/sys/src/9/port/devsd.c:165,170
1995/0403		default: continue; }
1995/0404		print("sd6|");
1995/0403
1994/0913		if(++ndisk >= Ndisk) break;
1995/0404/sys/src/9/port/devsd.c:281,290 – 1995/0405/sys/src/9/port/devsd.c:284,306
1994/0913		char *b, *line[Npart+2], *field[3]; static char MAGIC[] = "plan9 partitions";
1995/0405		/* * If the drive wasn't ready when we tried to do a * read-capacity earlier (in sdinit()), try again. * It might be possible to be smarter here, and look at the * response from a test-unit-ready which would show if the * target was in the process of becoming ready. */ if(d->size == 0 || d->bsize == 0){ if(scsicap(d->t, d->lun, &d->size, &d->bsize) != STok){ d->size = d->bsize = 0; error(Eio); } }
1994/0913		b = scsialloc(d->bsize); if(b == 0) error(Enomem);                  qlock(d); p = d->table;