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Resurect the old register read/write test for non-ATA/ATAPI drives, to avoid 

false matches on controllers which properly respond to a WDCC_RECAL command.
Should close PR port-i386/7702 (the author tested this patch, and said it
solves his problem).
This commit is contained in:
bouyer 1999-06-23 19:00:17 +00:00
parent b9b5f1fc26
commit 4fd8325ec6
1 changed files with 23 additions and 2 deletions
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25
sys/dev/ic/wdc.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: wdc.c,v 1.67 1999/04/11 20:50:28 bouyer Exp $ */
/* $NetBSD: wdc.c,v 1.68 1999/06/23 19:00:17 bouyer Exp $ */
/*
@ -321,7 +321,28 @@ wdcattach(chp)
chp->channel, i), DEBUG_PROBE);
if ((chp->ch_drive[i].drive_flags & DRIVE_OLD) == 0)
continue;
/* Pre-ATA drive ? */
/*
* Pre-ATA drive ?
* Test registers writability (Error register not
* writable, but cyllo is), then try an ATA command.
*/
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,
WDSD_IBM | (i << 4));
delay(10);
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh,
wd_error, 0x58);
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh,
wd_cyl_lo, 0xa5);
if (bus_space_read_1(chp->cmd_iot, chp->cmd_ioh,
wd_error == 0x58) ||
bus_space_read_1(chp->cmd_iot, chp->cmd_ioh,
wd_cyl_lo) != 0xa5) {
WDCDEBUG_PRINT(("%s:%d:%d: register "
"writability failed\n",
chp->wdc->sc_dev.dv_xname,
chp->channel, i), DEBUG_PROBE);
chp->ch_drive[i].drive_flags &= ~DRIVE_OLD;
}
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,
WDSD_IBM | (i << 4));
delay(100);