d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Try to use the "right" CHS translations of a LBA device.

Browse Source 
Drives bigger than 8.4G is still in question until I get a drive
to test on...
This commit is contained in:
Søren Schmidt 1998-04-09 17:46:45 +00:00
parent c839c3ace3
commit 44779c5a1c
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=35110
1 changed files with 21 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
sys/i386/isa/wd.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
* $Id: wd.c,v 1.152 1998/04/02 02:10:47 eivind Exp $
* $Id: wd.c,v 1.153 1998/04/08 20:04:36 sos Exp $
*/
/* TODO:
@ -1901,9 +1901,26 @@ wdgetctlr(struct disk *du)
du->dk_dd.d_secsize = DEV_BSIZE;
if ((du->cfg_flags & WDOPT_LBA) && wp->wdp_lbasize) {
du->dk_dd.d_nsectors = 63;
du->dk_dd.d_ntracks = 64;
du->dk_dd.d_ncylinders = wp->wdp_lbasize / (63*64);
du->dk_dd.d_secpercyl= 63*64;
if (wp->wdp_lbasize < 16*63*1024) { /* <=528.4 MB */
du->dk_dd.d_ntracks = 16;
}
else if (wp->wdp_lbasize < 32*63*1024) { /* <=1.057 GB */
du->dk_dd.d_ntracks = 32;
}
else if (wp->wdp_lbasize < 64*63*1024) { /* <=2.114 GB */
du->dk_dd.d_ntracks = 64;
}
else if (wp->wdp_lbasize < 128*63*1024) { /* <=4.228 GB */
du->dk_dd.d_ntracks = 128;
}
else if (wp->wdp_lbasize < 128*63*1024) { /* <=8.422 GB */
du->dk_dd.d_ntracks = 255;
}
else { /* >8.422 GB */
du->dk_dd.d_ntracks = 255; /* XXX */
}
du->dk_dd.d_secpercyl= du->dk_dd.d_ntracks*du->dk_dd.d_nsectors;
du->dk_dd.d_ncylinders = wp->wdp_lbasize/du->dk_dd.d_secpercyl;
du->dk_dd.d_secperunit = wp->wdp_lbasize;
du->dk_flags |= DKFL_LBA;
}