/*---------------------------------------------------------------------------*
* ISACSX interrupt service routine
*---------------------------------------------------------------------------*/
void
ifpi2_isacsx_irq(struct l1_softc *sc, int ista)
{
register u_char c = 0;
register u_char istad = 0;
NDBGL1(L1_F_MSG, "unit %d: ista = 0x%02x", sc->sc_unit, ista);
/* was it an HDLC interrupt ? */
if (ista & ISACSX_ISTA_ICD)
{
istad = ISAC_READ(I_ISTAD);
NDBGL1(L1_F_MSG, "unit %d: istad = 0x%02x", sc->sc_unit, istad);
if(istad & (ISACSX_ISTAD_RFO|ISACSX_ISTAD_XMR|ISACSX_ISTAD_XDU))
{
/* not really EXIR, but very similar */
c |= ifpi2_isacsx_exir_hdlr(sc, istad);
}
}
if(istad & ISACSX_ISTAD_RME) /* receive message end */
{
register int rest;
u_char rsta;
/* get rx status register */
rsta = ISAC_READ(I_RSTAD);
/* Check for Frame and CRC valid */
if((rsta & ISACSX_RSTAD_MASK) != (ISACSX_RSTAD_VFR|ISACSX_RSTAD_CRC))
{
int error = 0;
if(!(rsta & ISACSX_RSTAD_VFR)) /* VFR error */
{
error++;
NDBGL1(L1_I_ERR, "unit %d: Frame not valid error", sc->sc_unit);
}
if(!(rsta & ISACSX_RSTAD_CRC)) /* CRC error */
{
error++;
NDBGL1(L1_I_ERR, "unit %d: CRC error", sc->sc_unit);
}
if(rsta & ISACSX_RSTAD_RDO) /* ReceiveDataOverflow */
{
error++;
NDBGL1(L1_I_ERR, "unit %d: Data Overrun error", sc->sc_unit);
}
if(rsta & ISACSX_RSTAD_RAB) /* ReceiveABorted */
{
error++;
NDBGL1(L1_I_ERR, "unit %d: Receive Aborted error", sc->sc_unit);
}
if(error == 0)
NDBGL1(L1_I_ERR, "unit %d: RME unknown error, RSTAD = 0x%02x!", sc->sc_unit, rsta);
i4b_Dfreembuf(sc->sc_ibuf);
c |= ISACSX_CMDRD_RMC|ISACSX_CMDRD_RRES;
sc->sc_ibuf = NULL;
sc->sc_ib = NULL;
sc->sc_ilen = 0;
ISAC_WRITE(I_CMDRD, ISACSX_CMDRD_RMC|ISACSX_CMDRD_RRES);
return;
}
rest = (ISAC_READ(I_RBCLD) & (ISACSX_FIFO_LEN-1));
if(rest == 0)
rest = ISACSX_FIFO_LEN;
if(sc->sc_ibuf == NULL)
{
if((sc->sc_ibuf = i4b_Dgetmbuf(rest)) != NULL)
sc->sc_ib = sc->sc_ibuf->m_data;
else
panic("ifpi2_isacsx_irq: RME, i4b_Dgetmbuf returns NULL!\n");
sc->sc_ilen = 0;
}
if(sc->sc_ilen <= (MAX_DFRAME_LEN - rest))
{
ISAC_RDFIFO(sc->sc_ib, rest);
/* the last byte is status - strip it */
sc->sc_ilen += rest - 1;
sc->sc_ibuf->m_pkthdr.len =
sc->sc_ibuf->m_len = sc->sc_ilen;
if(sc->sc_trace & TRACE_D_RX)
{
i4b_trace_hdr_t hdr;
hdr.unit = L0IFPI2UNIT(sc->sc_unit);
hdr.type = TRC_CH_D;
hdr.dir = FROM_NT;
hdr.count = ++sc->sc_trace_dcount;
MICROTIME(hdr.time);
i4b_l1_trace_ind(&hdr, sc->sc_ibuf->m_len, sc->sc_ibuf->m_data);
}
c |= ISACSX_CMDRD_RMC;
if(sc->sc_enabled &&
(ctrl_desc[sc->sc_unit].protocol != PROTOCOL_D64S))
{
i4b_l1_ph_data_ind(L0IFPI2UNIT(sc->sc_unit), sc->sc_ibuf);
}
else
{
i4b_Dfreembuf(sc->sc_ibuf);
}
}
else
{
NDBGL1(L1_I_ERR, "RME, input buffer overflow!");
i4b_Dfreembuf(sc->sc_ibuf);
c |= ISACSX_CMDRD_RMC|ISACSX_CMDRD_RRES;
}
sc->sc_ibuf = NULL;
sc->sc_ib = NULL;
sc->sc_ilen = 0;
}
if(istad & ISACSX_ISTAD_RPF) /* receive fifo full */
{
if(sc->sc_ibuf == NULL)
{
if((sc->sc_ibuf = i4b_Dgetmbuf(MAX_DFRAME_LEN)) != NULL)
sc->sc_ib= sc->sc_ibuf->m_data;
else
panic("ifpi2_isacsx_irq: RPF, i4b_Dgetmbuf returns NULL!\n");
sc->sc_ilen = 0;
}
if(sc->sc_ilen <= (MAX_DFRAME_LEN - ISACSX_FIFO_LEN))
{
ISAC_RDFIFO(sc->sc_ib, ISACSX_FIFO_LEN);
sc->sc_ilen += ISACSX_FIFO_LEN;
sc->sc_ib += ISACSX_FIFO_LEN;
c |= ISACSX_CMDRD_RMC;
}
else
{
NDBGL1(L1_I_ERR, "RPF, input buffer overflow!");
i4b_Dfreembuf(sc->sc_ibuf);
sc->sc_ibuf = NULL;
sc->sc_ib = NULL;
sc->sc_ilen = 0;
c |= ISACSX_CMDRD_RMC|ISACSX_CMDRD_RRES;
}
}
if(istad & ISACSX_ISTAD_XPR) /* transmit fifo empty (XPR bit set) */
{
if((sc->sc_obuf2 != NULL) && (sc->sc_obuf == NULL))
{
sc->sc_freeflag = sc->sc_freeflag2;
sc->sc_obuf = sc->sc_obuf2;
sc->sc_op = sc->sc_obuf->m_data;
sc->sc_ol = sc->sc_obuf->m_len;
sc->sc_obuf2 = NULL;
#ifdef NOTDEF
printf("ob2=%x, op=%x, ol=%d, f=%d #",
sc->sc_obuf,
sc->sc_op,
sc->sc_ol,
sc->sc_state);
#endif
}
else
{
#ifdef NOTDEF
printf("ob=%x, op=%x, ol=%d, f=%d #",
sc->sc_obuf,
sc->sc_op,
sc->sc_ol,
sc->sc_state);
#endif
}
if(sc->sc_obuf)
{
ISAC_WRFIFO(sc->sc_op, min(sc->sc_ol, ISACSX_FIFO_LEN));
if(sc->sc_ol > ISACSX_FIFO_LEN) /* length > 32 ? */
{
sc->sc_op += ISACSX_FIFO_LEN; /* bufferptr+32 */
sc->sc_ol -= ISACSX_FIFO_LEN; /* length - 32 */
c |= ISACSX_CMDRD_XTF; /* set XTF bit */
}
else
{
if(sc->sc_freeflag)
{
i4b_Dfreembuf(sc->sc_obuf);
sc->sc_freeflag = 0;
}
sc->sc_obuf = NULL;
sc->sc_op = NULL;
sc->sc_ol = 0;
c |= ISACSX_CMDRD_XTF | ISACSX_CMDRD_XME;
}
}
else
{
sc->sc_state &= ~ISAC_TX_ACTIVE;
}
}
if(ista & ISACSX_ISTA_CIC) /* channel status change CISQ */
{
register u_char ci;
/* get command/indication rx register*/
ci = ISAC_READ(I_CIR0);
/* C/I code change IRQ (flag already cleared by CIR0 read) */
if(ci & ISACSX_CIR0_CIC0)
ifpi2_isacsx_ind_hdlr(sc, (ci >> 4) & 0xf);
}
if(c)
{
ISAC_WRITE(I_CMDRD, c);
}
}
/*---------------------------------------------------------------------------*
* ISAC interrupt service routine
*---------------------------------------------------------------------------*/
void
ifpnp_isac_irq(struct l1_softc *sc, int ista)
{
u_char c = 0;
NDBGL1(L1_F_MSG, "unit %d: ista = 0x%02x", sc->sc_unit, ista);
if(ista & ISAC_ISTA_EXI) /* extended interrupt */
{
c |= ifpnp_isac_exir_hdlr(sc, ISAC_READ(I_EXIR));
}
if(ista & ISAC_ISTA_RME) /* receive message end */
{
int rest;
u_char rsta;
/* get rx status register */
rsta = ISAC_READ(I_RSTA);
if((rsta & ISAC_RSTA_MASK) != 0x20)
{
int error = 0;
if(!(rsta & ISAC_RSTA_CRC)) /* CRC error */
{
error++;
NDBGL1(L1_I_ERR, "unit %d: CRC error", sc->sc_unit);
}
if(rsta & ISAC_RSTA_RDO) /* ReceiveDataOverflow */
{
error++;
NDBGL1(L1_I_ERR, "unit %d: Data Overrun error", sc->sc_unit);
}
if(rsta & ISAC_RSTA_RAB) /* ReceiveABorted */
{
error++;
NDBGL1(L1_I_ERR, "unit %d: Receive Aborted error", sc->sc_unit);
}
if(error == 0)
NDBGL1(L1_I_ERR, "unit %d: RME unknown error, RSTA = 0x%02x!", sc->sc_unit, rsta);
i4b_Dfreembuf(sc->sc_ibuf);
c |= ISAC_CMDR_RMC|ISAC_CMDR_RRES;
sc->sc_ibuf = NULL;
sc->sc_ib = NULL;
sc->sc_ilen = 0;
ISAC_WRITE(I_CMDR, ISAC_CMDR_RMC|ISAC_CMDR_RRES);
ISACCMDRWRDELAY();
return;
}
rest = (ISAC_READ(I_RBCL) & (ISAC_FIFO_LEN-1));
if(rest == 0)
rest = ISAC_FIFO_LEN;
if(sc->sc_ibuf == NULL)
{
if((sc->sc_ibuf = i4b_Dgetmbuf(rest)) != NULL)
sc->sc_ib = sc->sc_ibuf->m_data;
else
panic("ifpnp_isac_irq: RME, i4b_Dgetmbuf returns NULL!\n");
sc->sc_ilen = 0;
}
if(sc->sc_ilen <= (MAX_DFRAME_LEN - rest))
{
ISAC_RDFIFO(sc->sc_ib, rest);
sc->sc_ilen += rest;
sc->sc_ibuf->m_pkthdr.len =
sc->sc_ibuf->m_len = sc->sc_ilen;
if(sc->sc_trace & TRACE_D_RX)
{
i4b_trace_hdr_t hdr;
hdr.unit = L0IFPNPUNIT(sc->sc_unit);
hdr.type = TRC_CH_D;
hdr.dir = FROM_NT;
hdr.count = ++sc->sc_trace_dcount;
MICROTIME(hdr.time);
i4b_l1_trace_ind(&hdr, sc->sc_ibuf->m_len, sc->sc_ibuf->m_data);
}
c |= ISAC_CMDR_RMC;
if(sc->sc_enabled &&
(ctrl_desc[sc->sc_unit].protocol != PROTOCOL_D64S))
{
i4b_l1_ph_data_ind(L0IFPNPUNIT(sc->sc_unit), sc->sc_ibuf);
}
else
{
i4b_Dfreembuf(sc->sc_ibuf);
}
}
else
{
NDBGL1(L1_I_ERR, "RME, input buffer overflow!");
i4b_Dfreembuf(sc->sc_ibuf);
c |= ISAC_CMDR_RMC|ISAC_CMDR_RRES;
}
sc->sc_ibuf = NULL;
sc->sc_ib = NULL;
sc->sc_ilen = 0;
}
if(ista & ISAC_ISTA_RPF) /* receive fifo full */
{
if(sc->sc_ibuf == NULL)
{
if((sc->sc_ibuf = i4b_Dgetmbuf(MAX_DFRAME_LEN)) != NULL)
sc->sc_ib= sc->sc_ibuf->m_data;
else
panic("ifpnp_isac_irq: RPF, i4b_Dgetmbuf returns NULL!\n");
sc->sc_ilen = 0;
}
if(sc->sc_ilen <= (MAX_DFRAME_LEN - ISAC_FIFO_LEN))
{
ISAC_RDFIFO(sc->sc_ib, ISAC_FIFO_LEN);
sc->sc_ilen += ISAC_FIFO_LEN;
sc->sc_ib += ISAC_FIFO_LEN;
c |= ISAC_CMDR_RMC;
}
else
{
NDBGL1(L1_I_ERR, "RPF, input buffer overflow!");
i4b_Dfreembuf(sc->sc_ibuf);
sc->sc_ibuf = NULL;
sc->sc_ib = NULL;
sc->sc_ilen = 0;
c |= ISAC_CMDR_RMC|ISAC_CMDR_RRES;
}
}
if(ista & ISAC_ISTA_XPR) /* transmit fifo empty (XPR bit set) */
{
if((sc->sc_obuf2 != NULL) && (sc->sc_obuf == NULL))
{
sc->sc_freeflag = sc->sc_freeflag2;
sc->sc_obuf = sc->sc_obuf2;
sc->sc_op = sc->sc_obuf->m_data;
sc->sc_ol = sc->sc_obuf->m_len;
sc->sc_obuf2 = NULL;
#ifdef NOTDEF
kprintf("ob2=%x, op=%x, ol=%d, f=%d #",
sc->sc_obuf,
sc->sc_op,
sc->sc_ol,
sc->sc_state);
#endif
}
else
{
#ifdef NOTDEF
kprintf("ob=%x, op=%x, ol=%d, f=%d #",
sc->sc_obuf,
sc->sc_op,
sc->sc_ol,
sc->sc_state);
#endif
}
if(sc->sc_obuf)
{
ISAC_WRFIFO(sc->sc_op, min(sc->sc_ol, ISAC_FIFO_LEN));
if(sc->sc_ol > ISAC_FIFO_LEN) /* length > 32 ? */
{
sc->sc_op += ISAC_FIFO_LEN; /* bufferptr+32 */
sc->sc_ol -= ISAC_FIFO_LEN; /* length - 32 */
c |= ISAC_CMDR_XTF; /* set XTF bit */
}
else
{
if(sc->sc_freeflag)
{
i4b_Dfreembuf(sc->sc_obuf);
sc->sc_freeflag = 0;
}
sc->sc_obuf = NULL;
sc->sc_op = NULL;
sc->sc_ol = 0;
c |= ISAC_CMDR_XTF | ISAC_CMDR_XME;
}
}
else
{
sc->sc_state &= ~ISAC_TX_ACTIVE;
}
}
if(ista & ISAC_ISTA_CISQ) /* channel status change CISQ */
{
u_char ci;
/* get command/indication rx register*/
ci = ISAC_READ(I_CIRR);
/* if S/Q IRQ, read SQC reg to clr SQC IRQ */
if(ci & ISAC_CIRR_SQC)
ISAC_READ(I_SQRR);
/* C/I code change IRQ (flag already cleared by CIRR read) */
if(ci & ISAC_CIRR_CIC0)
ifpnp_isac_ind_hdlr(sc, (ci >> 2) & 0xf);
}
/*---------------------------------------------------------------------------*
* Data source switch for Read channels - 1, 3 and 5 (B and D-Channel)
*---------------------------------------------------------------------------*/
void
ihfc_putmbuf (ihfc_sc_t *sc, u_char chan, struct mbuf *m)
{
i4b_trace_hdr_t hdr;
if (chan < 2)
{
if(S_TRACE & TRACE_D_RX)
{
hdr.count = ++S_DTRACECOUNT;
hdr.dir = FROM_NT;
hdr.type = TRC_CH_D;
hdr.unit = S_I4BUNIT;
MICROTIME(hdr.time);
i4b_l1_trace_ind(&hdr, m->m_len, m->m_data);
}
if (!S_ENABLED) { i4b_Dfreembuf(m); return; }
m->m_pkthdr.len = m->m_len;
i4b_l1_ph_data_ind(S_I4BUNIT, m);
}
else
{
if(S_TRACE & TRACE_B_RX)
{
hdr.count = ++S_BTRACECOUNT;
hdr.dir = FROM_NT;
hdr.type = (chan < 4) ? TRC_CH_B1 : TRC_CH_B2;
hdr.unit = S_I4BUNIT;
MICROTIME(hdr.time);
i4b_l1_trace_ind(&hdr, m->m_len, m->m_data);
}
if (!S_ENABLED) { i4b_Bfreembuf(m); return; }
if (S_PROT == BPROT_NONE)
{
if(!i4b_l1_bchan_tel_silence(m->m_data, m->m_len))
{
S_BDRVLINK->bch_activity(S_BDRVLINK->unit, ACT_RX);
}
if (!_IF_QFULL(&S_IFQUEUE))
{
S_BYTES += m->m_len;
IF_ENQUEUE(&S_IFQUEUE, m);
S_BDRVLINK->bch_rx_data_ready(S_BDRVLINK->unit);
}
return;
}
if (S_PROT == BPROT_RHDLC)
{
S_MBUFDUMMY = m;
S_BYTES += m->m_pkthdr.len = m->m_len;
S_BDRVLINK->bch_rx_data_ready(S_BDRVLINK->unit);
S_MBUFDUMMY = NULL;
return;
}
NDBGL1(L1_ERROR, "Unknown protocol: %d", S_PROT);
}
}
