pc98/libpc98/biosdisk.c

98 #define	BD(dev)	(bdinfo[(dev)->dd.d_unit])
334 	BD(dev).bd_open++;
335 	if (BD(dev).bd_bcache == NULL)
336 		BD(dev).bd_bcache = bcache_allocate();
350 	if (disk_open(&disk, BD(dev).bd_sectors * BD(dev).bd_sectorsize,
351 	    BD(dev).bd_sectorsize) == 0) {
354 			size /= BD(dev).bd_sectorsize;
355 			if (size > BD(dev).bd_sectors)
356 				BD(dev).bd_sectors = size;
361 	err = disk_open(dev, BD(dev).bd_sectors * BD(dev).bd_sectorsize,
362 	    BD(dev).bd_sectorsize);
372 	BD(dev).bd_open--;
373 	if (BD(dev).bd_open == 0) {
374 	    bcache_free(BD(dev).bd_bcache);
375 	    BD(dev).bd_bcache = NULL;
394 		*(u_int *)data = BD(dev).bd_sectorsize;
397 		*(uint64_t *)data = BD(dev).bd_sectors * BD(dev).bd_sectorsize;
415 	bcd.dv_cache = BD(dev).bd_bcache;
433     if (size % BD(dev).bd_sectorsize)
450     blks = size / BD(dev).bd_sectorsize;
460         disk_blocks /= BD(dev).bd_sectorsize;
463 	disk_blocks = BD(dev).bd_sectors - dev->d_offset;
475 	size = blks * BD(dev).bd_sectorsize;
485 	    if (BD(dev).bd_flags != BD_FLOPPY || rc != 0x20) {
534     bpc = BD(dev).bd_sec * BD(dev).bd_hds;	/* blocks per cylinder */
538     hd = x / BD(dev).bd_sec;		/* offset / blocks per track */
539     sec = x % BD(dev).bd_sec;		/* offset into track */
544         v86.eax = 0x0500 | BD(dev).bd_unit;
546 	v86.eax = 0x0600 | BD(dev).bd_unit;
547     if (BD(dev).bd_flags & BD_FLOPPY) {
551     } else if (BD(dev).bd_flags & BD_OPTICAL) {
580     if (VTOP(dest) >> 20 != 0 || (BD(dev).bd_unit < 0x80 &&
582 	blks * BD(dev).bd_sectorsize) >> 16))) {
592 	x = V86_IO_BUFFER_SIZE / BD(dev).bd_sectorsize;
606 	sec = dblk % BD(dev).bd_sec;	/* offset into track */
607 	x = min(BD(dev).bd_sec - sec, resid);
619 	    bcopy(p, bbuf, x * BD(dev).bd_sectorsize);
630 		v86.eax = 0x0300 | BD(dev).bd_unit;
649 	    bcopy(bbuf, p, x * BD(dev).bd_sectorsize);
650 	p += (x * BD(dev).bd_sectorsize);
655 /*    hexdump(dest, (blks * BD(dev).bd_sectorsize)); */
775     if (disk_open(dev, BD(dev).bd_sectors * BD(dev).bd_sectorsize,
776 	BD(dev).bd_sectorsize) != 0)		/* oops, not a viable device */
783 	if (BD(dev).bd_type == DT_ATAPI) {
792 	if ((BD(dev).bd_flags & BD_LABELOK) && 0) {
793 //	    (BD(dev).bd_disklabel.d_type == DTYPE_SCSI)) {
810 	unit = BD(dev).bd_da_unit;