/*
* Interrupt handler for the MACE DMA completion interrupts
*/
int
mc_dmaintr(void *arg)
{
struct mc_softc *sc = arg;
int status, offset, statoff;
int datalen, resid;
int i, n, count;
dbdma_command_t *cmd;
/* We've received some packets from the MACE */
/* Loop through, processing each of the packets */
i = sc->sc_tail;
for (n = 0; n < MC_RXDMABUFS; n++, i++) {
if (i == MC_RXDMABUFS)
i = 0;
cmd = &sc->sc_rxdmacmd[i];
status = dbdma_ld16(&cmd->d_status);
resid = dbdma_ld16(&cmd->d_resid);
if ((status & DBDMA_CNTRL_ACTIVE) == 0) {
continue;
}
count = dbdma_ld16(&cmd->d_count);
datalen = count - resid;
datalen -= 4; /* 4 == status bytes */
if (datalen < 4 + sizeof(struct ether_header)) {
printf("short packet len=%d\n", datalen);
/* continue; */
goto next;
}
DBDMA_BUILD_CMD(cmd, DBDMA_CMD_STOP, 0, 0, 0, 0);
offset = i * MACE_BUFLEN;
statoff = offset + datalen;
sc->sc_rxframe.rx_rcvcnt = sc->sc_rxbuf[statoff + 0];
sc->sc_rxframe.rx_rcvsts = sc->sc_rxbuf[statoff + 1];
sc->sc_rxframe.rx_rntpc = sc->sc_rxbuf[statoff + 2];
sc->sc_rxframe.rx_rcvcc = sc->sc_rxbuf[statoff + 3];
sc->sc_rxframe.rx_frame = sc->sc_rxbuf + offset;
mc_rint(sc);
next:
DBDMA_BUILD_CMD(cmd, DBDMA_CMD_IN_LAST, 0, DBDMA_INT_ALWAYS,
DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER);
cmd->d_status = 0;
cmd->d_resid = 0;
sc->sc_tail = i + 1;
}
dbdma_continue(sc->sc_rxdma);
return 1;
}
int
xlights_intr(void *v)
{
struct xlights_softc *sc = (struct xlights_softc *)v;
int status;
dbdma_command_t *cmd;
cmd = sc->sc_dmacmd;
status = dbdma_ld16(&cmd->d_status);
if (sc->sc_dmasts) {
sc->sc_dmasts = 0;
timeout_del(&sc->sc_tmo);
wakeup(sc->sc_buf);
return (1);
}
return (0);
}
int
bmac_rint(void *v)
{
struct bmac_softc *sc = v;
struct ifnet *ifp = &sc->arpcom.ac_if;
struct mbuf *m;
dbdma_command_t *cmd;
int status, resid, count, datalen;
int i, n;
void *data;
#ifdef BMAC_DEBUG
printf("bmac_rint() called\n");
#endif
i = sc->sc_rxlast;
for (n = 0; n < BMAC_RXBUFS; n++, i++) {
if (i == BMAC_RXBUFS)
i = 0;
cmd = &sc->sc_rxcmd[i];
status = dbdma_ld16(&cmd->d_status);
resid = dbdma_ld16(&cmd->d_resid);
#ifdef BMAC_DEBUG
if (status != 0 && status != 0x8440 && status != 0x9440)
printf("bmac_rint status = 0x%x\n", status);
#endif
if ((status & DBDMA_CNTRL_ACTIVE) == 0) /* 0x9440 | 0x8440 */
continue;
count = dbdma_ld16(&cmd->d_count);
datalen = count - resid; /* 2 == framelen */
if (datalen < sizeof(struct ether_header)) {
printf("%s: short packet len = %d\n",
ifp->if_xname, datalen);
goto next;
}
DBDMA_BUILD_CMD(cmd, DBDMA_CMD_STOP, 0, 0, 0, 0);
data = sc->sc_rxbuf + BMAC_BUFLEN * i;
/* XXX Sometimes bmac reads one extra byte. */
if (datalen == ETHER_MAX_LEN + 1)
datalen--;
/* Trim the CRC. */
datalen -= ETHER_CRC_LEN;
m = bmac_get(sc, data, datalen);
if (m == NULL) {
ifp->if_ierrors++;
goto next;
}
#if NBPFILTER > 0
/*
* Check if there's a BPF listener on this interface.
* If so, hand off the raw packet to BPF.
*/
if (ifp->if_bpf)
bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN);
#endif
ether_input_mbuf(ifp, m);
ifp->if_ipackets++;
next:
DBDMA_BUILD_CMD(cmd, DBDMA_CMD_IN_LAST, 0, DBDMA_INT_ALWAYS,
DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER);
cmd->d_status = 0;
cmd->d_resid = 0;
sc->sc_rxlast = i + 1;
}
dbdma_continue(sc->sc_rxdma);
return (1);
}
int
bmac_rint(void *v)
{
struct bmac_softc *sc = v;
struct ifnet *ifp = &sc->arpcom.ac_if;
struct mbuf_list ml = MBUF_LIST_INITIALIZER();
struct mbuf *m;
dbdma_command_t *cmd;
int status, resid, count, datalen;
int i, n;
void *data;
#ifdef BMAC_DEBUG
printf("bmac_rint() called\n");
#endif
i = sc->sc_rxlast;
for (n = 0; n < BMAC_RXBUFS; n++, i++) {
if (i == BMAC_RXBUFS)
i = 0;
cmd = &sc->sc_rxcmd[i];
status = dbdma_ld16(&cmd->d_status);
resid = dbdma_ld16(&cmd->d_resid);
#ifdef BMAC_DEBUG
if (status != 0 && status != 0x8440 && status != 0x9440)
printf("bmac_rint status = 0x%x\n", status);
#endif
if ((status & DBDMA_CNTRL_ACTIVE) == 0) /* 0x9440 | 0x8440 */
continue;
count = dbdma_ld16(&cmd->d_count);
datalen = count - resid; /* 2 == framelen */
if (datalen < sizeof(struct ether_header)) {
printf("%s: short packet len = %d\n",
ifp->if_xname, datalen);
goto next;
}
DBDMA_BUILD_CMD(cmd, DBDMA_CMD_STOP, 0, 0, 0, 0);
data = sc->sc_rxbuf + BMAC_BUFLEN * i;
/* XXX Sometimes bmac reads one extra byte. */
if (datalen == ETHER_MAX_LEN + 1)
datalen--;
/* Trim the CRC. */
datalen -= ETHER_CRC_LEN;
m = bmac_get(sc, data, datalen);
if (m == NULL) {
ifp->if_ierrors++;
goto next;
}
ml_enqueue(&ml, m);
next:
DBDMA_BUILD_CMD(cmd, DBDMA_CMD_IN_LAST, 0, DBDMA_INT_ALWAYS,
DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER);
cmd->d_status = 0;
cmd->d_resid = 0;
sc->sc_rxlast = i + 1;
}
bmac_mediachange(ifp);
dbdma_continue(sc->sc_rxdma);
if_input(ifp, &ml);
return (1);
}
