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Correct the wrong PCI-IDE probing on AcerLabs Aladdin-V chipset. It won't

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change the original code but add an extra option "ALI_V" to check the
precise IDE port.(especially, secondary) Use the same option "ALI_V" on
the kernel config file to prevent generic DMA check causes wrong result.
(It seems buggy even on PIIX4 chipset, and I don't know when this bug start)

Should I add the option "ALI_V" into /sys/i386/conf/LINT ?
This commit is contained in:
foxfair 1998-12-24 06:30:21 +00:00
parent 60be3bd66f
commit faf96076a5
1 changed files with 14 additions and 4 deletions
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18
sys/i386/isa/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 1.180 1998/11/15 20:08:50 eivind Exp $
* $Id: wd.c,v 1.181 1998/12/15 09:16:57 bde Exp $
*/
/* TODO:
@ -313,19 +313,29 @@ wdprobe(struct isa_device *dvp)
interface = du->dk_ctrlr / 2;
du->dk_interface = interface;
#if !defined(DISABLE_PCI_IDE) && (NPCI > 0)
if (wddma[interface].wdd_candma) {
du->dk_dmacookie = wddma[interface].wdd_candma(dvp->id_iobase, du->dk_ctrlr);
#ifdef ALI_V
if ((wddma[interface].wdd_candma) &&
((du->dk_dmacookie = wddma[interface].wdd_candma(dvp->id_iobase,du->dk_ctrlr)) != NULL))
{
du->dk_port = dvp->id_iobase;
du->dk_altport = wddma[interface].wdd_altiobase(du->dk_dmacookie);
} else {
du->dk_port = dvp->id_iobase;
du->dk_altport = du->dk_port + wd_ctlr;
}
#endif
if (wddma[interface].wdd_candma) {
du->dk_dmacookie = wddma[interface].wdd_candma(dvp->id_iobase,du->dk_ctrlr);
du->dk_port = dvp->id_iobase;
du->dk_altport = wddma[interface].wdd_altiobase(du->dk_dmacookie);
} else {
du->dk_port = dvp->id_iobase;
du->dk_altport = du->dk_port + wd_ctlr;
}
#else
du->dk_port = dvp->id_iobase;
du->dk_altport = du->dk_port + wd_ctlr;
#endif
/* check if we have registers that work */
outb(du->dk_port + wd_sdh, WDSD_IBM); /* set unit 0 */
outb(du->dk_port + wd_cyl_lo, 0xa5); /* wd_cyl_lo is read/write */