xfnw/plan9fox
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

pc64: port etherbcm

Browse source 
do not store Block* pointer in packet descriptor, assumed
pointer would fit in a long. we use pointer table now to
record the Block* pointer and store index instead.
This commit is contained in:
cinap_lenrek 2014-03-19 09:00:20 +01:00
parent f14b49f8bf
commit da62091c07
2 changed files with 23 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

31
sys/src/9/pc/etherbcm.c
View file

@ -30,7 +30,7 @@ struct Ctlr {
ulong *recvret, *recvprod, *sendr;
ulong port;
ulong recvreti, recvprodi, sendri, sendcleani;
Block **sends;
Block **sends, **recvs;
int active, duplex;
};
@ -370,21 +370,24 @@ static int
replenish(Ctlr *ctlr)
{
ulong *next;
ulong incr;
ulong incr, idx;
Block *bp;
incr = (ctlr->recvprodi + 1) & (RecvProdRingLen - 1);
idx = ctlr->recvprodi;
incr = (idx + 1) & (RecvProdRingLen - 1);
if(incr == (ctlr->status[2] >> 16)) return -1;
if(ctlr->recvs[idx] != 0) return -1;
bp = iallocb(Rbsz);
if(bp == nil) {
print("bcm: out of memory for receive buffers\n");
return -1;
}
next = ctlr->recvprod + ctlr->recvprodi * 8;
ctlr->recvs[idx] = bp;
next = ctlr->recvprod + idx * 8;
memset(next, 0, 32);
next[1] = PADDR(bp->rp);
next[2] = Rbsz;
next[7] = (ulong) bp;
next[7] = idx;
coherence();
csr32(ctlr, RecvProdBDRingIndex) = ctlr->recvprodi = incr;
return 0;
@ -395,11 +398,17 @@ bcmreceive(Ether *edev)
{
Ctlr *ctlr;
Block *bp;
ulong *pkt, len;
ulong *pkt, len, idx;
ctlr = edev->ctlr;
for(; pkt = currentrecvret(ctlr); replenish(ctlr), consumerecvret(ctlr)) {
bp = (Block*) pkt[7];
idx = pkt[7] & (RecvProdRingLen - 1);
bp = ctlr->recvs[idx];
if(bp == 0) {
print("bcm: nil block at %lux -- shouldn't happen\n", idx);
break;
}
ctlr->recvs[idx] = 0;
len = pkt[2] & 0xFFFF;
bp->wp = bp->rp + len;
if((pkt[3] & PacketEnd) == 0) print("bcm: partial frame received -- shouldn't happen\n");
@ -446,7 +455,6 @@ bcmtransmit(Ether *edev)
}
bp = qget(edev->oq);
if(bp == nil) break;
setmalloctag(bp, (ulong)(void*)bcmtransmit);
next = ctlr->sendr + ctlr->sendri * 4;
next[0] = 0;
next[1] = PADDR(bp->rp);
@ -792,8 +800,11 @@ bcmpci(void)
continue;
}
ctlr->sends = malloc(sizeof(ctlr->sends[0]) * SendRingLen);
if(ctlr->sends == nil){
print("bcm: unable to alloc ctlr->sends\n");
ctlr->recvs = malloc(sizeof(ctlr->recvs[0]) * RecvProdRingLen);
if(ctlr->sends == nil || ctlr->recvs == nil){
print("bcm: unable to alloc ctlr->sends and ctlr->recvs\n");
free(ctlr->sends);
free(ctlr->recvs);
free(ctlr);
continue;
}

2
sys/src/9/pc64/pc64
View file

@ -54,7 +54,7 @@ link
ether82563 pci
# ether82598 pci
# ether83815 pci
# etherbcm pci
etherbcm pci
# etherdp83820 pci
# etherec2t ether8390
# etherelnk3 pci