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- Be more strict in status check before sending a command (make sure 

DRQ is not asserted). Closes kern/9346.
- Change the "fake identify before the real one" by a delay(). The real cause
  of the problem is that the drive is unresponsive just after a reset.
  The real problem (and the solution) showed up after the first change.
This commit is contained in:
bouyer 2000-02-14 12:37:35 +00:00
parent 042be92f6f
commit 085f44145c
1 changed files with 7 additions and 4 deletions
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11
sys/dev/ic/wdc.c
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@ -1,4 +1,4 @@
/* $NetBSD: wdc.c,v 1.78 2000/01/17 00:01:01 bouyer Exp $ */
/* $NetBSD: wdc.c,v 1.79 2000/02/14 12:37:35 bouyer Exp $ */
/*
@ -317,8 +317,11 @@ wdcattach(chp)
if ((chp->ch_drive[i].drive_flags & DRIVE) == 0)
continue;
/* Issue a IDENTIFY command, to try to detect slave ghost */
ata_get_params(&chp->ch_drive[i], AT_POLL, &params);
/*
* Wait a bit, some devices are weird just after a reset.
* Then issue a IDENTIFY command, to try to detect slave ghost
*/
delay(100);
error = ata_get_params(&chp->ch_drive[i], AT_POLL, &params);
if (error == CMD_OK) {
/* If IDENTIFY succeded, this is not an OLD ctrl */
@ -1226,7 +1229,7 @@ __wdccommand_start(chp, xfer)
bus_space_write_1(chp->cmd_iot, chp->cmd_ioh, wd_sdh,
WDSD_IBM | (drive << 4));
if (wdcwait(chp, wdc_c->r_st_bmask, wdc_c->r_st_bmask,
if (wdcwait(chp, wdc_c->r_st_bmask | WDCS_DRQ, wdc_c->r_st_bmask,
wdc_c->timeout) != 0) {
wdc_c->flags |= AT_TIMEOU;
__wdccommand_done(chp, xfer);