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

Synchronize with sys/i386/isa/wd.c revision 1.128.

Browse Source
This commit is contained in:
KATO Takenori 1997-04-04 15:22:59 +00:00
parent 9fa50de4c4
commit 1964ed8cde
1 changed files with 48 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
sys/pc98/pc98/wd.c
View File

@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
* $Id: wd.c,v 1.20 1997/03/13 17:00:27 kato Exp $
* $Id: wd.c,v 1.21 1997/03/24 12:29:48 bde Exp $
*/
/* TODO:
@ -1537,12 +1537,55 @@ wdcommand(struct disk *du, u_int cylinder, u_int head, u_int sector,
wdc = du->dk_port;
if (du->cfg_flags & WDOPT_SLEEPHACK) {
/* OK, so the APM bios has put the disk into SLEEP mode,
* how can we tell ? Uhm, we can't. There is no
* standardized way of finding out, and the only way to
* wake it up is to reset it. Bummer.
*
* All the many and varied versions of the IDE/ATA standard
* explicitly tells us not to look at these registers if
* the disk is in SLEEP mode. Well, too bad really, we
* have to find out if it's in sleep mode before we can
* avoid reading the registers.
*
* I have reason to belive that most disks will return
* either 0xff or 0x00 in all but the status register
* when in SLEEP mode, but I have yet to see one return
* 0x00, so we don't check for that yet.
*
* The check for WDCS_BUSY is for the case where the
* bios spins up the disk for us, but doesn't initialize
* it correctly /phk
*/
if (old_epson_note) {
if(epson_inb(wdc + wd_status) == WDCS_BUSY)
wdunwedge(du);
if(epson_inb(wdc + wd_precomp) + epson_inb(wdc + wd_cyl_lo) +
epson_inb(wdc + wd_cyl_hi) + epson_inb(wdc + wd_sdh) +
epson_inb(wdc + wd_sector) +
epson_inb(wdc + wd_seccnt) == 6 * 0xff) {
if (bootverbose)
printf("wd(%d,%d): disk aSLEEP\n",
du->dk_ctrlr, du->dk_unit);
wdunwedge(du);
} else if(epson_inb(wdc + wd_status) == WDCS_BUSY) {
if (bootverbose)
printf("wd(%d,%d): disk is BUSY\n",
du->dk_ctrlr, du->dk_unit);
wdunwedge(du);
}
} else {
if(inb(wdc + wd_status) == WDCS_BUSY)
wdunwedge(du);
if(inb(wdc + wd_precomp) + inb(wdc + wd_cyl_lo) +
inb(wdc + wd_cyl_hi) + inb(wdc + wd_sdh) +
inb(wdc + wd_sector) + inb(wdc + wd_seccnt) == 6 * 0xff) {
if (bootverbose)
printf("wd(%d,%d): disk aSLEEP\n",
du->dk_ctrlr, du->dk_unit);
wdunwedge(du);
} else if(inb(wdc + wd_status) == WDCS_BUSY) {
if (bootverbose)
printf("wd(%d,%d): disk is BUSY\n",
du->dk_ctrlr, du->dk_unit);
wdunwedge(du);
}
}
}