92ced03849
which prevents erroneous packets from being put onto the protocol stack; enhance error detection for B-channel HDLC errors; remove old cvs id´s.
223 lines
7.5 KiB
C
223 lines
7.5 KiB
C
/*
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* Copyright (c) 1999, 2000 Dave Boyce. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b_iwic - isdn4bsd Winbond W6692 driver
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* ----------------------------------------
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*
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* $FreeBSD$
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*
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* last edit-date: [Sun Jan 21 11:08:44 2001]
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*
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*---------------------------------------------------------------------------*/
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#ifndef _I4B_IWIC_H_
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#define _I4B_IWIC_H_
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#include <i4b/layer1/iwic/i4b_iwic_ext.h>
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/*---------------------------------------------------------------------------*
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* PCI resources used
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*---------------------------------------------------------------------------*/
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#define INFO_IO_BASES 2
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struct i4b_info {
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struct resource * io_base[INFO_IO_BASES];
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int io_rid [INFO_IO_BASES];
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struct resource * irq;
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int irq_rid;
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struct resource * mem;
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int mem_rid;
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};
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/*---------------------------------------------------------------------------*
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* state of a B channel
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*---------------------------------------------------------------------------*/
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struct iwic_bchan
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{
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int unit; /* unit number */
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int channel; /* channel number */
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int offset; /* offset from iobase */
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int bprot; /* b channel protocol used */
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int state; /* transceiver state: */
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#define ST_IDLE 0x00 /* channel idle */
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#define ST_TX_ACTIVE 0x01 /* tx running */
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int sc_trace_bcount;
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/* receive data from ISDN */
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struct ifqueue rx_queue; /* receiver queue */
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int rxcount; /* rx statistics counter*/
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struct mbuf *in_mbuf; /* rx input buffer */
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u_char *in_cbptr; /* curr buffer pointer */
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int in_len; /* rx input buffer len */
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/* transmit data to ISDN */
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struct ifqueue tx_queue; /* transmitter queue */
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int txcount; /* tx statistics counter */
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struct mbuf *out_mbuf_head; /* first mbuf in possible chain */
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struct mbuf *out_mbuf_cur; /* current mbuf in possbl chain */
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unsigned char *out_mbuf_cur_ptr; /* data pointer into mbuf */
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int out_mbuf_cur_len; /* remaining bytes in mbuf */
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/* linktab */
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isdn_link_t iwic_isdn_linktab;
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drvr_link_t *iwic_drvr_linktab;
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};
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/*---------------------------------------------------------------------------*
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* state of a D channel
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*---------------------------------------------------------------------------*/
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struct iwic_dchan
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{
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int enabled;
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int trace_count;
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struct mbuf *ibuf;
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u_char *ibuf_ptr; /* Input buffer pointer */
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int ibuf_len; /* Current length of input buffer */
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int ibuf_max_len; /* Max length in input buffer */
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int rx_count;
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int tx_ready; /* Can send next 64 bytes of data. */
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int tx_count;
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struct mbuf *obuf;
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int free_obuf;
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u_char *obuf_ptr;
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int obuf_len;
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struct mbuf *obuf2;
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int free_obuf2;
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};
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/*---------------------------------------------------------------------------*
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* state of one iwic unit
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*---------------------------------------------------------------------------*/
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struct iwic_softc
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{
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int sc_unit;
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u_int32_t sc_iobase;
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int sc_trace;
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int sc_cardtyp;
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int sc_I430state;
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int sc_I430T3;
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int enabled;
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struct iwic_dchan sc_dchan;
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struct iwic_bchan sc_bchan[2];
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struct i4b_info sc_resources;
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};
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/*---------------------------------------------------------------------------*
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* rd/wr register/fifo macros
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*---------------------------------------------------------------------------*/
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#define IWIC_READ(sc,reg) (inb ((sc)->sc_iobase + (u_int32_t)(reg)))
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#define IWIC_WRITE(sc,reg,val) (outb ((sc)->sc_iobase + (u_int32_t)(reg), (val)))
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#define IWIC_WRDFIFO(sc,p,l) (outsb ((sc)->sc_iobase + D_XFIFO, (p), (l)))
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#define IWIC_RDDFIFO(sc,p,l) (insb ((sc)->sc_iobase + D_RFIFO, (p), (l)))
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#define IWIC_WRBFIFO(sc,b,p,l) (outsb (((sc)->sc_iobase + (b)->offset + B_XFIFO), (p), (l)))
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#define IWIC_RDBFIFO(sc,b,p,l) (insb (((sc)->sc_iobase + (b)->offset + B_RFIFO), (p), (l)))
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/*---------------------------------------------------------------------------*
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* possible I.430 states
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*---------------------------------------------------------------------------*/
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enum I430states
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{
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ST_F3N, /* F3 Deactivated, no clock */
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ST_F3, /* F3 Deactivated */
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ST_F4, /* F4 Awaiting Signal */
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ST_F5, /* F5 Identifying Input */
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ST_F6, /* F6 Synchronized */
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ST_F7, /* F7 Activated */
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ST_F8, /* F8 Lost Framing */
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ST_ILL, /* Illegal State */
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N_STATES
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};
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/*---------------------------------------------------------------------------*
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* possible I.430 events
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*---------------------------------------------------------------------------*/
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enum I430events
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{
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EV_PHAR, /* PH ACTIVATE REQUEST */
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EV_CE, /* Clock enabled */
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EV_T3, /* Timer 3 expired */
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EV_INFO0, /* receiving INFO0 */
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EV_RSY, /* receiving any signal */
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EV_INFO2, /* receiving INFO2 */
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EV_INFO48, /* receiving INFO4 pri 8/9 */
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EV_INFO410, /* receiving INFO4 pri 10/11 */
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EV_DR, /* Deactivate Request */
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EV_PU, /* Power UP */
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EV_DIS, /* Disconnected (only 2085) */
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EV_EI, /* Error Indication */
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EV_ILL, /* Illegal Event */
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N_EVENTS
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};
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/*---------------------------------------------------------------------------*
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* available commands
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*---------------------------------------------------------------------------*/
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enum I430commands
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{
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CMD_ECK, /* Enable clock */
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CMD_TIM, /* Timing */
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CMD_RT, /* Reset */
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CMD_AR8, /* Activation request pri 8 */
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CMD_AR10, /* Activation request pri 10 */
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CMD_DIU, /* Deactivate Indication Upstream */
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CMD_ILL /* Illegal command */
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};
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extern struct iwic_softc iwic_sc[];
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#define iwic_find_sc(unit) (&iwic_sc[(unit)])
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extern void iwic_init(struct iwic_softc *);
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extern void iwic_next_state(struct iwic_softc *, int);
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extern void iwic_dchan_init(struct iwic_softc *);
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extern void iwic_dchan_xirq(struct iwic_softc *);
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extern void iwic_dchan_xfer_irq(struct iwic_softc *, int);
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extern void iwic_dchan_disable(struct iwic_softc *sc);
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extern int iwic_dchan_data_req(struct iwic_softc *sc, struct mbuf *m, int freeflag);
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extern void iwic_dchan_transmit(struct iwic_softc *sc);
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char *iwic_printstate(struct iwic_softc *sc);
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void iwic_init_linktab(struct iwic_softc *sc);
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void iwic_bchan_xirq(struct iwic_softc *, int);
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void iwic_bchannel_setup(int unit, int h_chan, int bprot, int activate);
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#endif /* _I4B_IWIC_H_ */
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