443 lines
14 KiB
C
443 lines
14 KiB
C
/*
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* Copyright (c) 2000 Hellmuth Michaelis. 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_l1dmux.c - isdn4bsd layer 1 driver multiplexer
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* --------------------------------------------------
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*
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* $Id: i4b_l1dmux.c,v 1.12 2000/06/02 16:14:36 hm Exp $
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*
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* $FreeBSD$
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*
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* last edit-date: [Fri Jun 2 14:37:39 2000]
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*
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*---------------------------------------------------------------------------*/
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#include "isic.h"
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#include "iwic.h"
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#include "ifpi.h"
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#include "ifpnp.h"
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#include "ihfc.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/i4b_debug.h>
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#include <machine/i4b_ioctl.h>
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#include <machine/i4b_trace.h>
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#include <i4b/layer1/i4b_l1.h>
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#include <i4b/include/i4b_l1l2.h>
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#include <i4b/include/i4b_global.h>
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/*
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* this code is nothing but a big dynamic switch to multiplex and demultiplex
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* layer 1 hardware isdn drivers to a common layer 2.
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*
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* when a card is successfully attached at system boot time, the driver for
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* this card calls the routine i4b_l1_mph_status_ind() with status = STI_ATTACH.
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*
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* This command is used to setup the tables for converting a "driver unit" and
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* "driver type" pair (encoded in the calls from the hardware driver to the
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* routines in this source file) to a "unit number" used in layer 2 and the
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* layers above (up to and including the isdnd daemon) and for converting
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* layer 2 units back to calling the appropriate driver and driver unit
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* number.
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*
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* Example: in my setup, a Winbond (iwic) card is probed first and gets
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* driver unit number 0, driver type 1 in layer 1. This becomes unit
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* number 0 in layer 2 and up. The second card probed is a Teles card
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* (isic) and gets driver unit number 0, driver type 0 in layer 1. This
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* becomes unit number 1 in layer 1 and up.
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*
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* To add support for a new driver, add a new driver number to i4b_l1.h:
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* currently we have L1DRVR_ISIC and L1DRVR_IWIC, so you would add
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* L1DRVR_FOO. More you would want to add a L0FOOUNIT to encode unit
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* numbers in your driver. You then have to add a l1foounittab[] and
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* add an entry to the getl1tab() routine for your driver. The only
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* thing left now is to write your driver with the support functions
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* for this multiplexer ;-)
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*/
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unsigned int i4b_l1_debug = L1_DEBUG_DEFAULT;
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#if NISIC > 0
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static int l1isicunittab[MAXL1UNITS];
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#endif
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#if NIWIC > 0
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static int l1iwicunittab[MAXL1UNITS];
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#endif
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#if NIFPI > 0
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static int l1ifpiunittab[MAXL1UNITS];
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#endif
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#if NIHFC > 0
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static int l1ihfcunittab[MAXL1UNITS];
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#endif
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#if NIFPNP > 0
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static int l1ifpnpunittab[MAXL1UNITS];
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#endif
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static int numl1units = 0;
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static int l1drvunittab[MAXL1UNITS];
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static struct i4b_l1mux_func *l1mux_func[MAXL1DRVR];
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static int i4b_l1_ph_data_req(int, struct mbuf *, int);
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static int i4b_l1_ph_activate_req(int);
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/* from i4btrc driver i4b_trace.c */
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int get_trace_data_from_l1(int unit, int what, int len, char *buf);
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/* from layer 2 */
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int i4b_ph_data_ind(int unit, struct mbuf *m);
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int i4b_ph_activate_ind(int unit);
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int i4b_ph_deactivate_ind(int unit);
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int i4b_mph_status_ind(int, int, int);
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/* layer 1 lme */
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int i4b_l1_mph_command_req(int, int, void *);
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/*---------------------------------------------------------------------------*
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* jump table: interface function pointers L1/L2 interface
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*---------------------------------------------------------------------------*/
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struct i4b_l1l2_func i4b_l1l2_func = {
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/* Layer 1 --> Layer 2 */
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(int (*)(int, struct mbuf *)) i4b_ph_data_ind,
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(int (*)(int)) i4b_ph_activate_ind,
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(int (*)(int)) i4b_ph_deactivate_ind,
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/* Layer 2 --> Layer 1 */
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(int (*)(int, struct mbuf *, int)) i4b_l1_ph_data_req,
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(int (*)(int)) i4b_l1_ph_activate_req,
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/* Layer 1 --> trace interface driver, ISDN trace data */
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(int (*)(i4b_trace_hdr_t *, int, u_char *)) get_trace_data_from_l1,
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/* Driver control and status information */
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(int (*)(int, int, int)) i4b_mph_status_ind,
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(int (*)(int, int, void *)) i4b_l1_mph_command_req,
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};
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/*---------------------------------------------------------------------------*
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* return a pointer to a layer 0 drivers unit tab
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*---------------------------------------------------------------------------*/
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static __inline int *
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getl1tab(int drv)
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{
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switch(drv)
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{
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#if NISIC > 0
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case L1DRVR_ISIC:
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return(l1isicunittab);
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break;
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#endif
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#if NIWIC > 0
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case L1DRVR_IWIC:
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return(l1iwicunittab);
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break;
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#endif
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#if NIFPI > 0
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case L1DRVR_IFPI:
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return(l1ifpiunittab);
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break;
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#endif
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#if NIHFC > 0
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case L1DRVR_IHFC:
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return(l1ihfcunittab);
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break;
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#endif
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#if NIFPNP > 0
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case L1DRVR_IFPNP:
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return(l1ifpnpunittab);
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break;
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#endif
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default:
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return(NULL);
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break;
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}
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}
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/*===========================================================================*
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* B - Channel (data transfer)
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*===========================================================================*/
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/*---------------------------------------------------------------------------*
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* return the address of ISDN drivers linktab
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*---------------------------------------------------------------------------*/
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isdn_link_t *
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i4b_l1_ret_linktab(int unit, int channel)
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{
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int drv_unit, ch_unit;
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drv_unit = L0DRVR(l1drvunittab[unit]);
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ch_unit = L0UNIT(l1drvunittab[unit]);
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NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
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if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
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|| l1mux_func[drv_unit]->ret_linktab == NULL)
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panic("i4b_l1_ret_linktab: unknown driver type %d\n", drv_unit);
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return(l1mux_func[drv_unit]->ret_linktab(ch_unit, channel));
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}
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/*---------------------------------------------------------------------------*
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* set the ISDN driver linktab
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*---------------------------------------------------------------------------*/
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void
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i4b_l1_set_linktab(int unit, int channel, drvr_link_t *dlt)
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{
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int drv_unit, ch_unit;
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drv_unit = L0DRVR(l1drvunittab[unit]);
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ch_unit = L0UNIT(l1drvunittab[unit]);
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NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
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if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
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|| l1mux_func[drv_unit]->set_linktab == NULL)
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panic("i4b_l1_set_linktab: unknown driver type %d\n", drv_unit);
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l1mux_func[drv_unit]->set_linktab(ch_unit, channel, dlt);
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}
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/*===========================================================================*
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* trace D- and B-Channel support
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*===========================================================================*/
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/*---------------------------------------------------------------------------*
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* L0 -> L1 trace information to trace driver
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*---------------------------------------------------------------------------*/
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int
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i4b_l1_trace_ind(i4b_trace_hdr_t *hdr, int len, u_char *data)
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{
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register int *tab;
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if((tab = getl1tab(L0DRVR(hdr->unit))) == NULL)
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panic("i4b_l1_trace_ind: unknown driver type %d\n", L0DRVR(hdr->unit));
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NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d", L0DRVR(hdr->unit), L0UNIT(hdr->unit), tab[L0UNIT(hdr->unit)]);
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hdr->unit = tab[L0UNIT(hdr->unit)];
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return(MPH_Trace_Ind(hdr, len, data));
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}
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/*===========================================================================*
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* D - Channel (signalling)
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*===========================================================================*/
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/*---------------------------------------------------------------------------*
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* L0 -> L1 status indication from hardware
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*---------------------------------------------------------------------------*/
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int
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i4b_l1_mph_status_ind(int drv_unit, int status, int parm, struct i4b_l1mux_func *l1mux_func_p)
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{
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register int *tab;
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/*
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* in case the status STI_ATTACH is sent from the hardware, the
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* driver has just attached itself and we need to initialize
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* the tables and assorted variables.
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*/
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if(status == STI_ATTACH)
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{
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if (l1mux_func_p == (struct i4b_l1mux_func *)0)
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panic("i4b_l1_mph_status_ind: i4b_l1mux_func pointer is NULL\n");
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if(numl1units < MAXL1UNITS)
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{
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if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
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panic("i4b_l1_mph_status_ind: unknown driver type %d\n", L0DRVR(drv_unit));
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tab[L0UNIT(drv_unit)] = numl1units;
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l1drvunittab[numl1units] = drv_unit;
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l1mux_func[L0DRVR(drv_unit)] = l1mux_func_p;
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switch(L0DRVR(drv_unit))
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{
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#if NISIC > 0
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case L1DRVR_ISIC:
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printf("isic%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
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break;
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#endif
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#if NIWIC > 0
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case L1DRVR_IWIC:
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printf("iwic%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
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break;
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#endif
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#if NIFPI > 0
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case L1DRVR_IFPI:
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printf("ifpi%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
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break;
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#endif
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#if NIFPNP > 0
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case L1DRVR_IFPNP:
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printf("ifpnp%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
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break;
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#endif
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#if NIHFC > 0
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case L1DRVR_IHFC:
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printf("ihfc%d: passive stack unit %d\n", L0UNIT(drv_unit), numl1units);
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#endif
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}
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NDBGL1(L1_PRIM, "ATTACH drv %d, drvunit %d -> unit %d", L0DRVR(drv_unit), L0UNIT(drv_unit), numl1units);
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numl1units++;
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}
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}
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if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
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panic("i4b_l1_mph_status_ind: unknown driver type %d\n", L0DRVR(drv_unit));
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NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d\n", L0DRVR(drv_unit), L0UNIT(drv_unit), tab[L0UNIT(drv_unit)]);
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return(MPH_Status_Ind(tab[L0UNIT(drv_unit)], status, parm));
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}
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/*---------------------------------------------------------------------------*
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* L0 -> L1 data from hardware
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*---------------------------------------------------------------------------*/
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int
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i4b_l1_ph_data_ind(int drv_unit, struct mbuf *data)
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{
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register int *tab;
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if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
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panic("i4b_l1_ph_data_ind: unknown driver type %d\n", L0DRVR(drv_unit));
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#if 0
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NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d", L0DRVR(drv_unit), L0UNIT(drv_unit), tab[L0UNIT(drv_unit)]);
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#endif
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return(PH_Data_Ind(tab[L0UNIT(drv_unit)], data));
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}
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/*---------------------------------------------------------------------------*
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* L0 -> L1 activate indication from hardware
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*---------------------------------------------------------------------------*/
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int
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i4b_l1_ph_activate_ind(int drv_unit)
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{
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register int *tab;
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if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
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panic("i4b_l1_ph_activate_ind: unknown driver type %d\n", L0DRVR(drv_unit));
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NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d", L0DRVR(drv_unit), L0UNIT(drv_unit), tab[L0UNIT(drv_unit)]);
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return(PH_Act_Ind(tab[L0UNIT(drv_unit)]));
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}
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/*---------------------------------------------------------------------------*
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* L0 -> L1 deactivate indication from hardware
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*---------------------------------------------------------------------------*/
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int
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i4b_l1_ph_deactivate_ind(int drv_unit)
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{
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register int *tab;
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if((tab = getl1tab(L0DRVR(drv_unit))) == NULL)
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panic("i4b_l1_ph_deactivate_ind: unknown driver type %d\n", L0DRVR(drv_unit));
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NDBGL1(L1_PRIM, "(drv %d / drvunit %d) -> unit %d", L0DRVR(drv_unit), L0UNIT(drv_unit), tab[L0UNIT(drv_unit)]);
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return(PH_Deact_Ind(tab[L0UNIT(drv_unit)]));
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}
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/*---------------------------------------------------------------------------*
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* L2 -> L1 command to hardware
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*---------------------------------------------------------------------------*/
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int
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i4b_l1_mph_command_req(int unit, int command, void * parm)
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{
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register int drv_unit = L0DRVR(l1drvunittab[unit]);
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register int ch_unit = L0UNIT(l1drvunittab[unit]);
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NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
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if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
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|| l1mux_func[drv_unit]->mph_command_req == NULL)
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panic("i4b_l1_mph_command_req: unknown driver type %d\n", drv_unit);
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return(l1mux_func[drv_unit]->mph_command_req(ch_unit, command, parm));
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}
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/*---------------------------------------------------------------------------*
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* L2 -> L1 data to be transmitted to hardware
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*---------------------------------------------------------------------------*/
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int
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i4b_l1_ph_data_req(int unit, struct mbuf *data, int flag)
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{
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register int drv_unit = L0DRVR(l1drvunittab[unit]);
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register int ch_unit = L0UNIT(l1drvunittab[unit]);
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#if 0
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NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
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#endif
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if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
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|| l1mux_func[drv_unit]->ph_data_req == NULL)
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panic("i4b_l1_ph_data_req: unknown driver type %d\n", drv_unit);
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return(l1mux_func[drv_unit]->ph_data_req(ch_unit, data, flag));
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}
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/*---------------------------------------------------------------------------*
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* L2 -> L1 activate request to hardware
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*---------------------------------------------------------------------------*/
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int
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i4b_l1_ph_activate_req(int unit)
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{
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register int drv_unit = L0DRVR(l1drvunittab[unit]);
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register int ch_unit = L0UNIT(l1drvunittab[unit]);
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NDBGL1(L1_PRIM, "unit %d -> drv %d / drvunit %d", unit, drv_unit, ch_unit);
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if (drv_unit >= MAXL1DRVR || l1mux_func[drv_unit] == NULL
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|| l1mux_func[drv_unit]->ph_activate_req == NULL)
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panic("i4b_l1_ph_activate_req: unknown driver type %d\n", drv_unit);
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return(l1mux_func[drv_unit]->ph_activate_req(ch_unit));
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}
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/* EOF */
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