diff options
Diffstat (limited to 'sys/i4b/layer1/isic/i4b_l1.c')
| -rw-r--r-- | sys/i4b/layer1/isic/i4b_l1.c | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/sys/i4b/layer1/isic/i4b_l1.c b/sys/i4b/layer1/isic/i4b_l1.c new file mode 100644 index 0000000..f19eda8 --- /dev/null +++ b/sys/i4b/layer1/isic/i4b_l1.c @@ -0,0 +1,261 @@ +/* + * 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 <sys/param.h> +#include <sys/kernel.h> +#include <sys/systm.h> +#include <sys/mbuf.h> +#include <sys/socket.h> + +#include <machine/stdarg.h> +#include <machine/clock.h> + +#include <net/if.h> + +#include <machine/i4b_debug.h> +#include <machine/i4b_ioctl.h> +#include <machine/i4b_trace.h> + +#include <i4b/layer1/isic/i4b_isic.h> +#include <i4b/layer1/isic/i4b_isac.h> +#include <i4b/layer1/isic/i4b_hscx.h> + +#include <i4b/layer1/i4b_l1.h> + +#include <i4b/include/i4b_mbuf.h> +#include <i4b/include/i4b_global.h> + +/*---------------------------------------------------------------------------* + * + * 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 */ |
