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Hopefully fix the parity problem and the hang on message reject for good.

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gibbs 1996-06-08 06:54:06 +00:00
parent dca5ec165f
commit d8a5f84233
1 changed files with 12 additions and 5 deletions
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17
sys/dev/aic7xxx/aic7xxx.seq
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@ -39,7 +39,7 @@
*
*-M************************************************************************/
VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.39 1996/05/30 14:31:08 gibbs Exp $"
VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.40 1996/05/31 06:30:15 gibbs Exp $"
#if defined(__NetBSD__)
#include "../../../../dev/ic/aic7xxxreg.h"
@ -83,6 +83,11 @@ reset:
start:
and FLAGS,0x0f /* clear target specific flags */
mvi SCSISEQ,ENRSELI /* Always allow reselection */
clr SCSIRATE /*
* We don't know the target we will
* connect to, so default to narrow
* transfers to avoid parity problems.
*/
poll_for_work:
/*
* Are we a twin channel device?
@ -274,9 +279,9 @@ ultra_b:
set_sxfrctl0:
mov SXFRCTL0,SINDEX
mov SCSISEQ,ALLZEROS /*
* Don't allow (re)selections
* until after the next busfree.
mvi SCSISEQ,ENAUTOATNP /*
* ATN on parity errors
* for "in" phases
*/
mvi CLRSINT1,CLRBUSFREE
mvi CLRSINT0,0x60 /* CLRSELDI|CLRSELDO */
@ -499,10 +504,11 @@ p_mesgout_start:
* a MESSAGE REJECT.
*/
p_mesgout_loop:
test SSTAT1,PHASEMIS jnz p_mesgout_phasemis
test SSTAT0,SPIORDY jz p_mesgout_loop
test SSTAT1,PHASEMIS jnz p_mesgout_phasemis
cmp DINDEX,1 jne p_mesgout_outb /* last byte? */
mvi CLRSINT1,CLRATNO /* drop ATN */
test SSTAT1,PHASEMIS jnz p_mesgout_phasemis
p_mesgout_outb:
dec DINDEX
or CLRSINT0, CLRSPIORDY
@ -866,6 +872,7 @@ inb_next:
or CLRSINT0, CLRSPIORDY
mov NONE,SCSIDATL /*dummy read from latch to ACK*/
inb_next_wait:
test SSTAT1,PHASEMIS jnz mesgin_phasemis
test SSTAT0,SPIORDY jz inb_next_wait /* wait for next byte */
inb_first:
mov DINDEX,SINDEX