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Improve EOS handling.

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This commit is contained in:
Poul-Henning Kamp 2005-02-11 06:57:02 +00:00
parent bd019eb78c
commit a3a7ba5989
1 changed files with 17 additions and 8 deletions
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25
sys/dev/ieee488/upd7210.c
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@ -357,16 +357,18 @@ gpib_ib_irq(struct upd7210 *u)
}
return (1);
}
if ((u->rreg[ISR1] & IXR1_DO) && ib->dolen > 0) {
if ((u->rreg[ISR1] & IXR1_DO) && ib->dobuf != NULL) {
if (ib->dolen == 0) {
wakeup(ib);
ib->dobuf = NULL;
write_reg(u, IMR1, 0);
return (1);
}
if (ib->dolen == 1 && ib->doeoi)
write_reg(u, AUXMR, AUXMR_SEOI);
write_reg(u, CDOR, *ib->dobuf);
ib->dobuf++;
ib->dolen--;
if (ib->dolen == 0) {
wakeup(ib);
write_reg(u, IMR1, 0);
}
return (1);
}
if (u->rreg[ISR1] & IXR1_ENDRX) {
@ -384,11 +386,15 @@ config_eos(struct upd7210 *u, struct handle *h)
int i;
i = 0;
if (h->eos & 0x0400) {
if (h->eos & REOS) {
write_reg(u, EOSR, h->eos & 0xff);
i |= AUXA_REOS;
}
if (h->eos & 0x1000)
if (h->eos & XEOS) {
write_reg(u, EOSR, h->eos & 0xff);
i |= AUXA_XEOS;
}
if (h->eos & BIN)
i |= AUXA_BIN;
write_reg(u, AUXRA, C_AUXA | i);
}
@ -476,10 +482,12 @@ do_odata(struct upd7210 *u, u_char *data, int len, int eos)
ib = u->ibfoo;
if (len == 0)
return (0);
mtx_lock(&u->mutex);
ib->dobuf = data;
ib->dolen = len;
ib->doeoi = 1;
ib->doeoi = 0;
if (!(u->rreg[ISR1] & IXR1_DO)) {
i1 = read_reg(u, ISR1);
@ -737,6 +745,7 @@ ibwrt(struct upd7210 *u, struct ibfoo_iocarg *ap)
ib->rdh = NULL;
ib->wrh = h;
upd7210_goto_standby(u);
config_eos(u, h);
}
i = do_odata(u, bp, ap->cnt, 1);
ap->__ibcnt = i;