/* * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * *--------------------------------------------------------------------------- * * i4b_l1.c - isdn4bsd layer 1 handler * ----------------------------------- * * $Id: i4b_l1.c,v 1.7 2000/06/02 16:14:36 hm Exp $ * * $FreeBSD$ * * last edit-date: [Fri Jun 2 18:09:53 2000] * *---------------------------------------------------------------------------*/ #include "isic.h" #if NISIC > 0 #include #include #include #include #include #include #include #include #include #include #include #include #include /*---------------------------------------------------------------------------* * * L2 -> L1: PH-DATA-REQUEST * ========================= * * parms: * unit physical interface unit number * m mbuf containing L2 frame to be sent out * freeflag MBUF_FREE: free mbuf here after having sent * it out * MBUF_DONTFREE: mbuf is freed by Layer 2 * returns: * ==0 fail, nothing sent out * !=0 ok, frame sent out * *---------------------------------------------------------------------------*/ int isic_ph_data_req(int unit, struct mbuf *m, int freeflag) { u_char cmd; int s; struct l1_softc *sc = &l1_sc[unit]; #ifdef NOTDEF NDBGL1(L1_PRIM, "unit %d, freeflag=%d", unit, freeflag); #endif if(m == NULL) /* failsafe */ return (0); s = SPLI4B(); if(sc->sc_I430state == ST_F3) /* layer 1 not running ? */ { NDBGL1(L1_I_ERR, "still in state F3!"); isic_ph_activate_req(unit); } if(sc->sc_state & ISAC_TX_ACTIVE) { if(sc->sc_obuf2 == NULL) { sc->sc_obuf2 = m; /* save mbuf ptr */ if(freeflag) sc->sc_freeflag2 = 1; /* IRQ must mfree */ else sc->sc_freeflag2 = 0; /* IRQ must not mfree */ NDBGL1(L1_I_MSG, "using 2nd ISAC TX buffer, state = %s", isic_printstate(sc)); if(sc->sc_trace & TRACE_D_TX) { i4b_trace_hdr_t hdr; hdr.unit = L0ISICUNIT(unit); hdr.type = TRC_CH_D; hdr.dir = FROM_TE; hdr.count = ++sc->sc_trace_dcount; MICROTIME(hdr.time); i4b_l1_trace_ind(&hdr, m->m_len, m->m_data); } splx(s); return(1); } NDBGL1(L1_I_ERR, "No Space in TX FIFO, state = %s", isic_printstate(sc)); if(freeflag == MBUF_FREE) i4b_Dfreembuf(m); splx(s); return (0); } if(sc->sc_trace & TRACE_D_TX) { i4b_trace_hdr_t hdr; hdr.unit = L0ISICUNIT(unit); hdr.type = TRC_CH_D; hdr.dir = FROM_TE; hdr.count = ++sc->sc_trace_dcount; MICROTIME(hdr.time); i4b_l1_trace_ind(&hdr, m->m_len, m->m_data); } sc->sc_state |= ISAC_TX_ACTIVE; /* set transmitter busy flag */ NDBGL1(L1_I_MSG, "ISAC_TX_ACTIVE set"); sc->sc_freeflag = 0; /* IRQ must NOT mfree */ ISAC_WRFIFO(m->m_data, min(m->m_len, ISAC_FIFO_LEN)); /* output to TX fifo */ if(m->m_len > ISAC_FIFO_LEN) /* message > 32 bytes ? */ { sc->sc_obuf = m; /* save mbuf ptr */ sc->sc_op = m->m_data + ISAC_FIFO_LEN; /* ptr for irq hdl */ sc->sc_ol = m->m_len - ISAC_FIFO_LEN; /* length for irq hdl */ if(freeflag) sc->sc_freeflag = 1; /* IRQ must mfree */ cmd = ISAC_CMDR_XTF; } else { sc->sc_obuf = NULL; sc->sc_op = NULL; sc->sc_ol = 0; if(freeflag) i4b_Dfreembuf(m); cmd = ISAC_CMDR_XTF | ISAC_CMDR_XME; } ISAC_WRITE(I_CMDR, cmd); ISACCMDRWRDELAY(); splx(s); return(1); } /*---------------------------------------------------------------------------* * * L2 -> L1: PH-ACTIVATE-REQUEST * ============================= * * parms: * unit physical interface unit number * * returns: * ==0 * !=0 * *---------------------------------------------------------------------------*/ int isic_ph_activate_req(int unit) { struct l1_softc *sc = &l1_sc[unit]; NDBGL1(L1_PRIM, "unit %d", unit); isic_next_state(sc, EV_PHAR); return(0); } /*---------------------------------------------------------------------------* * command from the upper layers *---------------------------------------------------------------------------*/ int isic_mph_command_req(int unit, int command, void *parm) { struct l1_softc *sc = &l1_sc[unit]; switch(command) { case CMR_DOPEN: /* daemon running */ NDBGL1(L1_PRIM, "unit %d, command = CMR_DOPEN", unit); sc->sc_enabled = 1; break; case CMR_DCLOSE: /* daemon not running */ NDBGL1(L1_PRIM, "unit %d, command = CMR_DCLOSE", unit); sc->sc_enabled = 0; break; case CMR_SETTRACE: NDBGL1(L1_PRIM, "unit %d, command = CMR_SETTRACE, parm = %d", unit, (unsigned int)parm); sc->sc_trace = (unsigned int)parm; break; case CMR_GCST: { struct chipstat *cst; NDBGL1(L1_PRIM, "unit %d, command = CMR_GCST, parm = %d", unit, (unsigned int)parm); cst = (struct chipstat *)parm; cst->driver_type = L1DRVR_ISIC; cst->stats.hscxstat.unit = sc->sc_unit; cst->stats.hscxstat.chan = cst->driver_bchannel; cst->stats.hscxstat.vfr = sc->sc_chan[cst->driver_bchannel].stat_VFR; cst->stats.hscxstat.rdo = sc->sc_chan[cst->driver_bchannel].stat_RDO; cst->stats.hscxstat.crc = sc->sc_chan[cst->driver_bchannel].stat_CRC; cst->stats.hscxstat.rab = sc->sc_chan[cst->driver_bchannel].stat_RAB; cst->stats.hscxstat.xdu = sc->sc_chan[cst->driver_bchannel].stat_XDU; cst->stats.hscxstat.rfo = sc->sc_chan[cst->driver_bchannel].stat_RFO; break; } default: NDBGL1(L1_ERROR, "ERROR, unknown command = %d, unit = %d, parm = %d", command, unit, (unsigned int)parm); break; } return(0); } #endif /* NISIC > 0 */