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ether8169: sometimes transmits got missed. kicking the poll bit on each transmit fixes the problem

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This commit is contained in:
cinap_lenrek 2011-08-30 09:08:55 +02:00
parent 9a7e90d361
commit 962ec8cfb1
1 changed files with 13 additions and 18 deletions
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31
sys/src/9/pc/ether8169.c
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@ -670,7 +670,7 @@ rtl8169init(Ether* edev)
* Transmitter.
*/
memset(ctlr->td, 0, sizeof(D)*ctlr->ntd);
ctlr->tdh = ctlr->tdt = 0;
ctlr->tdh = ctlr->tdt = ctlr->ntq = 0;
ctlr->td[ctlr->ntd-1].control = Eor;
/*
@ -759,12 +759,9 @@ rtl8169init(Ether* edev)
/*
* Interrupts.
* Disable Tdu|Tok for now, the transmit routine will tidy.
* Tdu means the NIC ran out of descriptors to send, so it
* doesn't really need to ever be on.
*/
csr32w(ctlr, Timerint, 0);
ctlr->imr = Serr|Timeout|Fovw|Punlc|Rdu|Ter|Rer|Rok;
ctlr->imr = Serr|Timeout|Fovw|Punlc|Rdu|Ter|Rer|Rok|Tdu;
csr16w(ctlr, Imr, ctlr->imr);
/*
@ -890,21 +887,16 @@ rtl8169transmit(Ether* edev)
D *d;
Block *bp;
Ctlr *ctlr;
int control, x;
int x;
ctlr = edev->ctlr;
ilock(&ctlr->tlock);
for(x = ctlr->tdh; ctlr->ntq > 0; x = NEXT(x, ctlr->ntd)){
d = &ctlr->td[x];
if((control = d->control) & Own)
if(d->control & Own)
break;
/*
* Check errors and log here.
*/
USED(control);
/*
* Free it up.
* Need to clean the descriptor here? Not really.
@ -913,7 +905,6 @@ rtl8169transmit(Ether* edev)
*/
freeb(ctlr->tb[x]);
ctlr->tb[x] = nil;
d->control &= Eor;
ctlr->ntq--;
}
@ -927,20 +918,23 @@ rtl8169transmit(Ether* edev)
d = &ctlr->td[x];
d->addrlo = PCIWADDR(bp->rp);
d->addrhi = 0;
ctlr->tb[x] = bp;
coherence();
d->control |= Own | Fs | Ls | BLEN(bp);
ctlr->tb[x] = bp;
d->control = (d->control & Eor) | Own | Fs | Ls | BLEN(bp);
x = NEXT(x, ctlr->ntd);
ctlr->ntq++;
}
if(x != ctlr->tdt){
if(x != ctlr->tdt)
ctlr->tdt = x;
csr8w(ctlr, Tppoll, Npq);
}
else if(ctlr->ntq >= (ctlr->ntd-1))
ctlr->txdu++;
if(ctlr->ntq > 0){
coherence();
csr8w(ctlr, Tppoll, Npq);
}
iunlock(&ctlr->tlock);
}
@ -1029,6 +1023,7 @@ rtl8169interrupt(Ureg*, void* arg)
csr16w(ctlr, Isr, isr);
if((isr & ctlr->imr) == 0)
break;
if(isr & (Fovw|Punlc|Rdu|Rer|Rok)){
rtl8169receive(edev);
if(!(isr & (Punlc|Rok)))