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Recognize IDE controler even if HDD is not connected.

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Submitted by:	IMAI Takeshi <take-i@ceres.dti.ne.jp>
This commit is contained in:
KATO Takenori 1999-01-03 17:26:04 +00:00
parent 0d3c3d3942
commit 4b6b2a8495
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=42267
1 changed files with 23 additions and 1 deletions
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24
sys/pc98/pc98/wd.c
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@ -34,7 +34,7 @@
* SUCH DAMAGE.
*
* from: @(#)wd.c 7.2 (Berkeley) 5/9/91
* $Id: wd.c,v 1.67 1998/12/17 08:42:10 kato Exp $
* $Id: wd.c,v 1.68 1998/12/25 09:05:17 kato Exp $
*/
/* TODO:
@ -381,9 +381,11 @@ wdprobe(struct isa_device *dvp)
}
}
du->dk_altport = du->dk_port + wd_ctlr;
#if 0
if ((PC98_SYSTEM_PARAMETER(0x55d) & 3) == 0) {
goto nodevice;
}
#endif
outb(0x432,(du->dk_unit)%2);
#else /* IBM-PC */
outb(du->dk_port + wd_sdh, WDSD_IBM); /* set unit 0 */
@ -407,11 +409,31 @@ wdprobe(struct isa_device *dvp)
if (inb(du->dk_port + wd_cyl_lo) == 0x14 &&
inb(du->dk_port + wd_cyl_hi) == 0xeb)
goto reset_ok;
#ifdef PC98
du->dk_unit = 2;
#else
du->dk_unit = 1;
#endif
outb(du->dk_port + wd_sdh, WDSD_IBM | 0x10); /* slave */
if (inb(du->dk_port + wd_cyl_lo) == 0x14 &&
inb(du->dk_port + wd_cyl_hi) == 0xeb)
goto reset_ok;
#ifdef PC98
du->dk_unit = 1;
outb(0x432,(du->dk_unit)%2);
if (wdreset(du) == 0)
goto reset_ok;
/* test for ATAPI signature */
outb(du->dk_port + wd_sdh, WDSD_IBM); /* master */
if (inb(du->dk_port + wd_cyl_lo) == 0x14 &&
inb(du->dk_port + wd_cyl_hi) == 0xeb)
goto reset_ok;
du->dk_unit = 3;
outb(du->dk_port + wd_sdh, WDSD_IBM | 0x10); /* slave */
if (inb(du->dk_port + wd_cyl_lo) == 0x14 &&
inb(du->dk_port + wd_cyl_hi) == 0xeb)
goto reset_ok;
#endif
#endif
DELAY(RECOVERYTIME);
if (wdreset(du) != 0) {