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Fix for chips that don't grok NCRCMD_SELATN3.

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This commit is contained in:
eeh 2000-12-10 19:25:07 +00:00
parent 8ace7abc75
commit af770220fa
1 changed files with 36 additions and 12 deletions
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48
sys/dev/ic/ncr53c9x.c
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@ -1,4 +1,4 @@
/* $NetBSD: ncr53c9x.c,v 1.62 2000/12/04 11:18:49 fvdl Exp $ */
/* $NetBSD: ncr53c9x.c,v 1.63 2000/12/10 19:25:07 eeh Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
@ -580,6 +580,8 @@ ncr53c9x_select(sc, ecb)
int tiflags = ti->flags;
u_char *cmd;
int clen;
int selatn3 = 1;
int selandstop = 0;
size_t dmasize;
NCR_TRACE(("[ncr53c9x_select(t%d,l%d,cmd:%x,tag:%x,%x)] ",
@ -610,6 +612,18 @@ ncr53c9x_select(sc, ecb)
NCR_WRITE_REG(sc, NCR_SELID, target);
ncr53c9x_setsync(sc, ti);
/*
* Check to see if we can use SELATN3.
*/
switch (sc->sc_rev) {
case NCR_VARIANT_ESP100:
/* Don't have NCRCMD_SELATN3 */
selatn3 = 0;
break;
default:
break;
}
if ((ecb->flags & ECB_SENSE) != 0) {
/*
* For REQUEST SENSE, we should not send an IDENTIFY or
@ -649,6 +663,7 @@ ncr53c9x_select(sc, ecb)
return;
}
if (tiflags & T_NEGOTIATE) selandstop = 1;
if (ecb->tag[0]) {
/* We'll use tags */
ecb->cmd.msg[0] = MSG_IDENTIFY(lun, 1);
@ -656,6 +671,9 @@ ncr53c9x_select(sc, ecb)
ecb->cmd.msg[2] = ecb->tag[1];
cmd = (u_char *)&ecb->cmd.msg[0];
clen = ecb->clen + 3;
if (!selatn3)
selandstop = 1;
} else {
ecb->cmd.msg[2] =
MSG_IDENTIFY(lun, (tiflags & T_RSELECTOFF)?0:1);
@ -663,7 +681,7 @@ ncr53c9x_select(sc, ecb)
clen = ecb->clen + 1;
}
if (ncr53c9x_dmaselect && (tiflags & T_NEGOTIATE) == 0) {
if (ncr53c9x_dmaselect && !selandstop) {
/* setup DMA transfer for command */
dmasize = clen;
@ -697,7 +715,7 @@ ncr53c9x_select(sc, ecb)
NCR_WRITE_REG(sc, NCR_FIFO, *cmd++);
clen --;
if (ti->flags & T_NEGOTIATE) {
if (selandstop) {
/* Arbitrate, select and stop after IDENTIFY message */
NCRCMD(sc, NCRCMD_SELATNS);
return;
@ -2244,7 +2262,8 @@ printf("<<RESELECT CONT'd>>");
NCRCMD(sc, NCRCMD_RSTATN);
break;
case 1:
if ((ti->flags & T_NEGOTIATE) == 0) {
if ((ti->flags & T_NEGOTIATE) == 0 &&
ecb->tag[0] == 0) {
printf("%s: step 1 & !NEG\n",
sc->sc_dev.dv_xname);
goto reset;
@ -2254,14 +2273,19 @@ printf("<<RESELECT CONT'd>>");
sc->sc_dev.dv_xname);
goto reset;
}
/* Start negotiating */
ti->period = sc->sc_minsync;
ti->offset = 15;
sc->sc_flags |= NCR_SYNCHNEGO;
if (ecb->tag[0])
ncr53c9x_sched_msgout(SEND_TAG|SEND_SDTR);
else
ncr53c9x_sched_msgout(SEND_SDTR);
if (ti->flags & T_NEGOTIATE) {
/* Start negotiating */
ti->period = sc->sc_minsync;
ti->offset = 15;
sc->sc_flags |= NCR_SYNCHNEGO;
if (ecb->tag[0])
ncr53c9x_sched_msgout(SEND_TAG|SEND_SDTR);
else
ncr53c9x_sched_msgout(SEND_SDTR);
} else {
/* Could not do ATN3 so send TAG */
ncr53c9x_sched_msgout(SEND_TAG);
}
sc->sc_prevphase = MESSAGE_OUT_PHASE; /* XXXX */
break;
case 3: